Pub Date : 2021-02-01DOI: 10.15789/2220-7619-toh-1233
V. Smirnov, T. A. Kudryavtseva
The first reports about HIV (human immunodeficiency virus) were appeared to the 1980s. By 2017 more than 37 million people were living with HIV. Human papilloma virus (HPV) is universally spread, with some estimates showing that about 1% of the sexually active population having genital warts. Human papilloma virus (HPV)-induced infection frequently ac-companies the clinical course of HIV and can manifest itself in a full spectrum of clinical-pathologic forms ranging from common warts to malignant neoplasia. Due to the widespread use of antiretroviral therapy, the number of patients with a combined infection (HIV + HPV) is steadily increasing. Here we review current clinical treatment options for HPV manifestations. High-dose antiretroviral therapy does not impede HPV treatment, and can even improve its efficacy in some cases. The topical administration of imiquimod, an immune response modifier, is an effective conservative treatment in HIV-infected patients with HPV. The immunomodulation therapy of imiquimod can serve as an effective alternative of aggressive chemical and mechanical procedures. Maximum efficacy with the lowest replaces rates may be expected from combined use of mechanical ablation methods with a subsequent follow up treatment with imiquimod. The best therapeutic result is expected in HIV-positive patients who are received high-dose antiretroviral treatment. The advantages of Vartocid, the modified Russian equivalent of the generic imiquimod, are discussed.
{"title":"Treatment of human papillomavirus infection in HIV-infected patients","authors":"V. Smirnov, T. A. Kudryavtseva","doi":"10.15789/2220-7619-toh-1233","DOIUrl":"https://doi.org/10.15789/2220-7619-toh-1233","url":null,"abstract":"The first reports about HIV (human immunodeficiency virus) were appeared to the 1980s. By 2017 more than 37 million people were living with HIV. Human papilloma virus (HPV) is universally spread, with some estimates showing that about 1% of the sexually active population having genital warts. Human papilloma virus (HPV)-induced infection frequently ac-companies the clinical course of HIV and can manifest itself in a full spectrum of clinical-pathologic forms ranging from common warts to malignant neoplasia. Due to the widespread use of antiretroviral therapy, the number of patients with a combined infection (HIV + HPV) is steadily increasing. Here we review current clinical treatment options for HPV manifestations. High-dose antiretroviral therapy does not impede HPV treatment, and can even improve its efficacy in some cases. The topical administration of imiquimod, an immune response modifier, is an effective conservative treatment in HIV-infected patients with HPV. The immunomodulation therapy of imiquimod can serve as an effective alternative of aggressive chemical and mechanical procedures. Maximum efficacy with the lowest replaces rates may be expected from combined use of mechanical ablation methods with a subsequent follow up treatment with imiquimod. The best therapeutic result is expected in HIV-positive patients who are received high-dose antiretroviral treatment. The advantages of Vartocid, the modified Russian equivalent of the generic imiquimod, are discussed.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"11 1","pages":"79-84"},"PeriodicalIF":0.4,"publicationDate":"2021-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-22DOI: 10.15789/2220-7619-biw-1453
A. Semenov, N. Pshenichnaya
The COVID-19 epidemic curve in China can be divided into several stages. Despite transparency in informing the world public about clusters of undiagnosed viral pneumonia, the country’s health care at the first stage of the epidemic was not ready to provide adequate and rapid response for a fast increase in the number of patients with COVID-19, infection control measures were not fully implemented, which also led to a large number of nosocomial cases of infection among medical workers and patients. Socially vulnerable groups of the population did not refer for medical assistance in a timely manner due to the lack of the disease danger understanding and also in connection with the high cost for them of medical aid. At the second stage, simultaneously with the restrictive measures introduced by the government, the entire health care system was rebooted: free medical care for patients with COVID-19 was provided and the strictest infection control measures were implemented, multi-level contact tracking system using IT technologies was organized, and the capacity of hospitals was increased many times. Through the joint efforts of ministries, mass media, social networks and volunteer movements, an unprecedented social mobilization of the population was achieved. Strict implementation of the entire set of measures aimed at fighting the epidemic allowed to take it under strict control at the third stage and practically eliminate the epidemic after 2,5 months. China’s response to the COVID-19 epidemic can be useful to other countries, in fighting the current pandemic and in preparing for a response to biological threats in the future.
{"title":"Born in Wuhan: lessons from COVID-19 epidemic in China","authors":"A. Semenov, N. Pshenichnaya","doi":"10.15789/2220-7619-biw-1453","DOIUrl":"https://doi.org/10.15789/2220-7619-biw-1453","url":null,"abstract":"The COVID-19 epidemic curve in China can be divided into several stages. Despite transparency in informing the world public about clusters of undiagnosed viral pneumonia, the country’s health care at the first stage of the epidemic was not ready to provide adequate and rapid response for a fast increase in the number of patients with COVID-19, infection control measures were not fully implemented, which also led to a large number of nosocomial cases of infection among medical workers and patients. Socially vulnerable groups of the population did not refer for medical assistance in a timely manner due to the lack of the disease danger understanding and also in connection with the high cost for them of medical aid. At the second stage, simultaneously with the restrictive measures introduced by the government, the entire health care system was rebooted: free medical care for patients with COVID-19 was provided and the strictest infection control measures were implemented, multi-level contact tracking system using IT technologies was organized, and the capacity of hospitals was increased many times. Through the joint efforts of ministries, mass media, social networks and volunteer movements, an unprecedented social mobilization of the population was achieved. Strict implementation of the entire set of measures aimed at fighting the epidemic allowed to take it under strict control at the third stage and practically eliminate the epidemic after 2,5 months. China’s response to the COVID-19 epidemic can be useful to other countries, in fighting the current pandemic and in preparing for a response to biological threats in the future.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-11-15DOI: 10.15789/2220-7619-2019-3-4-612-616
N. A. Burova, P. Soltys, N. Zharkin, M. Selikhova, N. I. Sviridova, E. Belan
Dynamics of serum proinflammatory cytokines such as interleukins (IL)-1, -2 and -6, tumor necrosis factor alpha (TNFα) was examined in patients of reproductive age suffering from acute inflammatory diseases of the pelvic organs. Our study was carried out with female patients at hospital admission prior to therapy applied with conventional methods of treatment and improved treatment by using vaginal low-frequency laser in a constant continuous magnetic field. The data obtained were compared with serum cytokine level from 20 healthy female volunteers of reproductive age consulted on better contraception methods. It was found that cytokine profile of in patients with acute inflammatory processes in pelvic organs was characterized by a high level of proinflammatory cytokines. It was shown that patients receiving conventional treatment contained decreased level of serum IL-1, IL-2, IL-6 and TNFα displaying slight dynamics, which did not reach it in control group. This may contribute to ongoing inflammatory process, despite the positive clinical dynamics. In turn, imbalance of immune responses leads to a persistently impaired fertility in women and need to perform subsequent comprehensive rehabilitation measures. Moreover, patients applied with intravaginal low-frequency laser radiation in a constant magnetic field were found to contain serum TNFα < 100 pg/ml observed in 59.7% of cases, IL-6 level was lower than 20 pg/ml (prevalent in control group) found in 54.2% of cases. Serum IL-2 level was decreased by 3.5-fold compared to baseline, whereas for IL-1β it was higher than 100 pg/ml in as few as 23.6% patients. Such temporal pattern of inflammatory markers with rapid significant decrease of serum proinflammatory cytokines in patients with preformed pathogenic factors can reduce probability of connective tissue formation and activate their own repair as well as regenerative events. The results obtained allow to wider use combined physical interventional factors for therapy of patients with acute inflammatory diseases of the pelvic organs.
{"title":"Dynamics of proinflammatory cytokine serum levels in patients with acute inflammatory diseases of pelvic organs in the early stages of conservative treatment","authors":"N. A. Burova, P. Soltys, N. Zharkin, M. Selikhova, N. I. Sviridova, E. Belan","doi":"10.15789/2220-7619-2019-3-4-612-616","DOIUrl":"https://doi.org/10.15789/2220-7619-2019-3-4-612-616","url":null,"abstract":"Dynamics of serum proinflammatory cytokines such as interleukins (IL)-1, -2 and -6, tumor necrosis factor alpha (TNFα) was examined in patients of reproductive age suffering from acute inflammatory diseases of the pelvic organs. Our study was carried out with female patients at hospital admission prior to therapy applied with conventional methods of treatment and improved treatment by using vaginal low-frequency laser in a constant continuous magnetic field. The data obtained were compared with serum cytokine level from 20 healthy female volunteers of reproductive age consulted on better contraception methods. It was found that cytokine profile of in patients with acute inflammatory processes in pelvic organs was characterized by a high level of proinflammatory cytokines. It was shown that patients receiving conventional treatment contained decreased level of serum IL-1, IL-2, IL-6 and TNFα displaying slight dynamics, which did not reach it in control group. This may contribute to ongoing inflammatory process, despite the positive clinical dynamics. In turn, imbalance of immune responses leads to a persistently impaired fertility in women and need to perform subsequent comprehensive rehabilitation measures. Moreover, patients applied with intravaginal low-frequency laser radiation in a constant magnetic field were found to contain serum TNFα < 100 pg/ml observed in 59.7% of cases, IL-6 level was lower than 20 pg/ml (prevalent in control group) found in 54.2% of cases. Serum IL-2 level was decreased by 3.5-fold compared to baseline, whereas for IL-1β it was higher than 100 pg/ml in as few as 23.6% patients. Such temporal pattern of inflammatory markers with rapid significant decrease of serum proinflammatory cytokines in patients with preformed pathogenic factors can reduce probability of connective tissue formation and activate their own repair as well as regenerative events. The results obtained allow to wider use combined physical interventional factors for therapy of patients with acute inflammatory diseases of the pelvic organs.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-09-28DOI: 10.15789/2220-7619-2017-3-271-278
L. Bayazitova, O. F. Tyupkina, T. A. Chazova, Y. Tyurin, G. Isaeva, A. Z. Zaripova, M. Patyashina, L. Avdonina, L. R. Yuzlibaeva
Prevalence estimate of pneumococcus carrier in preschool age children (medically fragile children with respiratory diseases and practically healthy organized children) have been carried out; microbiological features of clinical isolates S. pneumoniae have been studied. 511 S. pneumoniae strains isolated from medically fragile children with respiratory diseases aged between 6 months to 7 years during the period 2009–2016 and 47 isolates isolated from 200 practically healthy children attending preschool institutions of Kazan (2016) have been included in the research. Among 343 strains, 76 isolates were isolated during the period of 2009–2011; 82 strains — in 2012–2013; 87 strains — in 2014; 98 strains — in 2015; 168 strains — in 2016. Analysis of microbiocenosis of nasopharynx in medically fragile children showed that S. pneumoniae was sowed in 32.9% cases. In 58.4% of children it was as a monoculture (degree of colonization is 10 4 –10 6 CFU/ml). S. pneumoniae contaminated nasopharynx in bacterial associations with other respiratory pathogens (S. aureus, Moraxella spp., Haemophilus spp.) in 41.6% of children. The analysis of microbiocenosis character of nasopharynx in children aged between 2.5–7 years attending preschool institutions in Kazan (n = 200) have showed that contamination S. pneumoniae (23.5%) was observed in 47 children. Pneumococcus have been isolated in monoculture in 82.9% of children; the contamination degree made 10 3 –10 6 CFU/ml. According to serotyping data, nasopharynx of often and long-term ill children living in Kazan is colonized by serotypes of pneumococcus which are covered with 13 valence conjugated serum. The obtained data on the dynamics of strain S. pneumoniae antibiotic sensitivity among medically fragile children with respiratory diseases in Kazan during 2009–2015 showed high activity of β-lactams antibiotics (from 96 to 90.8% sensitive isolates) and clyndamicin (94.7–91.8% sensitive straines). Macrolides (azytromicin, clarytromicin) and phtorchinolons (ciprof loxacin) are less active in regard to isolates S. рneumoniae. S. pneumoniae with multiple antibiotic resistance were detected in children nasopharynx: 3.8–9.95 in medically fragile children and 8.5% in organized children-bactericides. Identification of the carrier level S. pneumoniae and monitoring the dynamics on antibiotic resistance and serotyping composition of nasopharyngeal pneumococcus will optimize prevention and treatment of infections S. pneumoniae in preschool children.
{"title":"COMMUNITY-ACQUIRED PNEUMONIA PNEUMOCOCCAL ETIOLOGY AND MICROBIOLOGICAL ASPECTS OF NASOPHARYNGEAL CARRIAGE IN CHILDREN IN THE REPUBLIC OF TATARSTAN","authors":"L. Bayazitova, O. F. Tyupkina, T. A. Chazova, Y. Tyurin, G. Isaeva, A. Z. Zaripova, M. Patyashina, L. Avdonina, L. R. Yuzlibaeva","doi":"10.15789/2220-7619-2017-3-271-278","DOIUrl":"https://doi.org/10.15789/2220-7619-2017-3-271-278","url":null,"abstract":"Prevalence estimate of pneumococcus carrier in preschool age children (medically fragile children with respiratory diseases and practically healthy organized children) have been carried out; microbiological features of clinical isolates S. pneumoniae have been studied. 511 S. pneumoniae strains isolated from medically fragile children with respiratory diseases aged between 6 months to 7 years during the period 2009–2016 and 47 isolates isolated from 200 practically healthy children attending preschool institutions of Kazan (2016) have been included in the research. Among 343 strains, 76 isolates were isolated during the period of 2009–2011; 82 strains — in 2012–2013; 87 strains — in 2014; 98 strains — in 2015; 168 strains — in 2016. Analysis of microbiocenosis of nasopharynx in medically fragile children showed that S. pneumoniae was sowed in 32.9% cases. In 58.4% of children it was as a monoculture (degree of colonization is 10 4 –10 6 CFU/ml). S. pneumoniae contaminated nasopharynx in bacterial associations with other respiratory pathogens (S. aureus, Moraxella spp., Haemophilus spp.) in 41.6% of children. The analysis of microbiocenosis character of nasopharynx in children aged between 2.5–7 years attending preschool institutions in Kazan (n = 200) have showed that contamination S. pneumoniae (23.5%) was observed in 47 children. Pneumococcus have been isolated in monoculture in 82.9% of children; the contamination degree made 10 3 –10 6 CFU/ml. According to serotyping data, nasopharynx of often and long-term ill children living in Kazan is colonized by serotypes of pneumococcus which are covered with 13 valence conjugated serum. The obtained data on the dynamics of strain S. pneumoniae antibiotic sensitivity among medically fragile children with respiratory diseases in Kazan during 2009–2015 showed high activity of β-lactams antibiotics (from 96 to 90.8% sensitive isolates) and clyndamicin (94.7–91.8% sensitive straines). Macrolides (azytromicin, clarytromicin) and phtorchinolons (ciprof loxacin) are less active in regard to isolates S. рneumoniae. S. pneumoniae with multiple antibiotic resistance were detected in children nasopharynx: 3.8–9.95 in medically fragile children and 8.5% in organized children-bactericides. Identification of the carrier level S. pneumoniae and monitoring the dynamics on antibiotic resistance and serotyping composition of nasopharyngeal pneumococcus will optimize prevention and treatment of infections S. pneumoniae in preschool children.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"7 1","pages":"271-278"},"PeriodicalIF":0.4,"publicationDate":"2017-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-06-19DOI: 10.15789/2220-7619-2017-2-193-202
Kostinov Mp, A. P. Cherdantsev, A. D. Shmitko, D. A. Praulova, A. Protasov, U. A. Dagil, Kostinova Ta, N. Akhmatova, E. A. Chromova, A. Ryzhov, D. A. Blagovidov, V. B. Polishchuk, O. O. Magarshak, E. S. Korovkina
Recent epidemiological events showed that pregnant women are the most vulnerable part of population if there is the flu in the country and they die much more often than the rest part of people. That is why influenza vaccination of population including pregnant women is one of the priorities of public health service in our state. Worldwide experience of influenza vaccination of either adults or children by new adjuvant vaccine has caused our research of its efficiency among pregnant women. The aim of the study was to investigate the level of antibodies to influenza virus strain A/H1N1/v, A/H3N2 and B in pregnant women vaccinated adjuvant trivalent subunit vaccine. Our research is randomized and comparative on parallel groups. It was carried out within the demands of Russian Federation and International ethic norms adapted to such kind of researches. Evaluation of the immunogenicity of the vaccine was conducted in 27 pregnant women in the II trimester of gestation, and in 23 pregnant women in the III trimester of gestation, 19 non-pregnant women was in the control group. The level of antibodies in the serum was determined using a reaction of hemagglutination inhibition before and 1, 3, 6, 9 and 12 months after the vaccination. Revealed that influenza vaccination of pregnant women in the II and III trimester, causes the increase in titers of antibodies to vaccine influenza strains A and B, to fully meet the required criteria CPMP, and does not differ from the nonpregnant group. In a month after vaccination the level of seroprotective against A/H1N1/v was 77.0%, A/H3N2 — 88.9%, B — 85.2% after vaccination in II trimester, and 87.0; 87.0; 91.35% in III trimester of gestation. The factor of seroconversion after vaccination in II trimester for A/H1N1/v was equal to 6.5, A/H3N2 — 7.2, B — 6.5, after vaccination in III trimester of pregnancy: 7.1, 6.5 and 5.1 correspondingly. At the same time revealed accelerated decline in antibody titer against influenza in pregnant women compared to nonpregnant women in a year after immunization The set of results of the study can be concluded that adjuvant trivalent subunit vaccine effective in vaccination of pregnant women in II and III trimester of pregnancy, and it is able to effectively provide immune protection against viruses of the flu A and B within all pregnancy long.
最近的流行病学事件表明，如果该国发生流感，孕妇是人口中最脆弱的部分，她们的死亡率比其他人群高得多。因此，为包括孕妇在内的人口接种流感疫苗是我国公共卫生服务的优先事项之一。世界范围内使用新佐剂疫苗接种成人或儿童流感疫苗的经验使我们对其在孕妇中的有效性进行了研究。本研究的目的是调查接种佐剂三价亚单位疫苗的孕妇对流感病毒株A/H1N1/v、A/H3N2和B的抗体水平。我们的研究是随机的，并在平行组中进行比较。它是在俄罗斯联邦的要求和适应这种研究的国际伦理规范的范围内进行的。对27例妊娠2期孕妇和23例妊娠3期孕妇进行了免疫原性评价，对照组为19例非妊娠妇女。在接种前和接种后1、3、6、9和12个月用血凝抑制反应测定血清抗体水平。结果显示，妊娠期II和III期孕妇接种流感疫苗，可导致流感疫苗A和B株抗体滴度升高，完全符合CPMP要求的标准，且与未妊娠组无差异。接种后1个月对a /H1N1/v、a /H3N2、B抗体的血清保护水平分别为77.0%、88.9%、85.2%和87.0;87.0;91.35%发生在妊娠晚期。妊娠中期接种后A/H1N1/v血清转化因子为6.5,A/H3N2 - 7.2, B - 6.5;妊娠中期接种后A/H1N1/v血清转化因子分别为7.1,6.5和5.1。同时揭示了孕妇免疫后一年内抗流感抗体滴度较非孕妇下降速度加快。本组研究结果可以得出结论，佐剂三价亚单位疫苗在妊娠二、三个月的孕妇中接种有效，并且能够在整个妊娠期内有效地提供对甲型和乙型流感病毒的免疫保护。
{"title":"ИММУНОГЕННОСТЬ ИММУНОАДЪЮВАНТНОЙ ВАКЦИНЫ ПРОТИВ ГРИППА У БЕРЕМЕННЫХ","authors":"Kostinov Mp, A. P. Cherdantsev, A. D. Shmitko, D. A. Praulova, A. Protasov, U. A. Dagil, Kostinova Ta, N. Akhmatova, E. A. Chromova, A. Ryzhov, D. A. Blagovidov, V. B. Polishchuk, O. O. Magarshak, E. S. Korovkina","doi":"10.15789/2220-7619-2017-2-193-202","DOIUrl":"https://doi.org/10.15789/2220-7619-2017-2-193-202","url":null,"abstract":"Recent epidemiological events showed that pregnant women are the most vulnerable part of population if there is the flu in the country and they die much more often than the rest part of people. That is why influenza vaccination of population including pregnant women is one of the priorities of public health service in our state. Worldwide experience of influenza vaccination of either adults or children by new adjuvant vaccine has caused our research of its efficiency among pregnant women. The aim of the study was to investigate the level of antibodies to influenza virus strain A/H1N1/v, A/H3N2 and B in pregnant women vaccinated adjuvant trivalent subunit vaccine. Our research is randomized and comparative on parallel groups. It was carried out within the demands of Russian Federation and International ethic norms adapted to such kind of researches. Evaluation of the immunogenicity of the vaccine was conducted in 27 pregnant women in the II trimester of gestation, and in 23 pregnant women in the III trimester of gestation, 19 non-pregnant women was in the control group. The level of antibodies in the serum was determined using a reaction of hemagglutination inhibition before and 1, 3, 6, 9 and 12 months after the vaccination. Revealed that influenza vaccination of pregnant women in the II and III trimester, causes the increase in titers of antibodies to vaccine influenza strains A and B, to fully meet the required criteria CPMP, and does not differ from the nonpregnant group. In a month after vaccination the level of seroprotective against A/H1N1/v was 77.0%, A/H3N2 — 88.9%, B — 85.2% after vaccination in II trimester, and 87.0; 87.0; 91.35% in III trimester of gestation. The factor of seroconversion after vaccination in II trimester for A/H1N1/v was equal to 6.5, A/H3N2 — 7.2, B — 6.5, after vaccination in III trimester of pregnancy: 7.1, 6.5 and 5.1 correspondingly. At the same time revealed accelerated decline in antibody titer against influenza in pregnant women compared to nonpregnant women in a year after immunization The set of results of the study can be concluded that adjuvant trivalent subunit vaccine effective in vaccination of pregnant women in II and III trimester of pregnancy, and it is able to effectively provide immune protection against viruses of the flu A and B within all pregnancy long.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"7 1","pages":"193-202"},"PeriodicalIF":0.4,"publicationDate":"2017-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47139611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-28DOI: 10.15789/2220-7619-2017-1-69-78
T. A. Mamaeva, N. V. Zheleznova, M. A. Nаumova, T. S. Chekhlyaeva, E. V. Vorobeychikovc, M. B. Mamou, V. A. Aleshkin
To estimate ELISA serological studies results of IgM and IgG specific Measles and Rubella Viruses (MRV) antibodies detection the “in-house” laboratory controls (ILC) including the specific markers of MRV infections were for the first time commercially prepared by the Vector Best PLC (Russia): “Measles-IgM, ser.1”, “Measles-IgM, ser.2”, “Rubella-IgM”, Measles-IgG” and “Rubella-IgG”. This task was realized under the special Executive Order of the Government of Russia N 523-r, 2014, April, 4. According to passport characteristics ILC samples are the lyophilized human sera, inactivated by heating (1 hour at 56°C) and stabilized by the mixture of sucrose (5%) and ProClin-3000 as the conservation agent. Samples are free of HBs Ag, anti-HVC, T.Pallidum, HIV-1/2, HIV-1Ag р24.The aim of the study was to evaluate the possibility of using the ILC for detection of the MRV IgM and IgG antibodies by ELISA with commercial ELISA kits used in Russia and CIS countries. In the process of detecting the specific activity of “Measles-IgM, ser.1”, “Measles-IgM, ser.2” and “Rubella-IgM” by ELISA kits of different formats (Vector Best, EcoLab and Siemens Companies) the statistically different results were received (p < 0.05). The optical density (OD) values of IgM in the “Measles-IgM, ser.1” and “Measles-IgM, ser.2” ILC, obtained by ELISA “VectoMeasles IgM” (Vector Best) were significantly higher than those obtained by ELISA IgEnzygnost®Anti-MeaslesVirus/IgМ. These values consisted for the ser. 1–1.33±0.02 о.u. vs. 0.18±0.01 о.u. (р < 0.05) and for the ser. 2–2.83±0.03 о.u. vs. 0.7±0.02 о.е. (р < 0.05) in the Vector Best and Siemens ELISA kits correspondently. In the “Rubella-IgM” ILC the OD values of the specific IgM by the “ELISA-Rubella IgM” EcoLab were also higher than those obtained by IgEnzygnost®Anti-RubellaVirus/IgМ ELISA kit. These values consisted 2.92±0.04 о.u. vs. 0.88±0.03 о.u. (р < 0.05) in EcoLab and Siemens ELISA test-systems correspondently. In the studies when the ILC working solution parameters for ELISA of “capture” and “indirect” formats were evaluated the statistic reliability and high information capability of the mathematic models of the OD value changes vs. the degree of dilution of the initial ILC were determined. For the “capture” and “indirect” formats the determination coefficient (R2) consisted 97.34 and 99.29 correspondently, the Fisher criteria (F) — 219.62 and 556.55 correspondently, the significance level (p) — < 0.05 for both formats. The evaluated optimal working dilution degrees of the IgM-containing ILC make possible to exclude the influence of the IgG antibodies as the non-target marker in the ILC. On the other hand, taking into account the format of the used ELISA kit the optimal working dilution degrees give the possibility to obtain the desirable 2–3 “cut-off” values of the specific marker. Moreover, the issue of the target marker quantitative content in ILC is discussed in the study. In order to improve the quality of the commer
{"title":"СОВЕРШЕНСТВОВАНИЕ КОНТРОЛЯ КАЧЕСТВА ИССЛЕДОВАНИЙ МЕТОДОМ ИФА ПРИ ЛАБОРАТОРНОМ ПОДТВЕРЖДЕНИИ КОРИ И КРАСНУХИ НА ЭТАПЕ ЭЛИМИНАЦИИ ЭТИХ ИНФЕКЦИЙ","authors":"T. A. Mamaeva, N. V. Zheleznova, M. A. Nаumova, T. S. Chekhlyaeva, E. V. Vorobeychikovc, M. B. Mamou, V. A. Aleshkin","doi":"10.15789/2220-7619-2017-1-69-78","DOIUrl":"https://doi.org/10.15789/2220-7619-2017-1-69-78","url":null,"abstract":"To estimate ELISA serological studies results of IgM and IgG specific Measles and Rubella Viruses (MRV) antibodies detection the “in-house” laboratory controls (ILC) including the specific markers of MRV infections were for the first time commercially prepared by the Vector Best PLC (Russia): “Measles-IgM, ser.1”, “Measles-IgM, ser.2”, “Rubella-IgM”, Measles-IgG” and “Rubella-IgG”. This task was realized under the special Executive Order of the Government of Russia N 523-r, 2014, April, 4. According to passport characteristics ILC samples are the lyophilized human sera, inactivated by heating (1 hour at 56°C) and stabilized by the mixture of sucrose (5%) and ProClin-3000 as the conservation agent. Samples are free of HBs Ag, anti-HVC, T.Pallidum, HIV-1/2, HIV-1Ag р24.The aim of the study was to evaluate the possibility of using the ILC for detection of the MRV IgM and IgG antibodies by ELISA with commercial ELISA kits used in Russia and CIS countries. In the process of detecting the specific activity of “Measles-IgM, ser.1”, “Measles-IgM, ser.2” and “Rubella-IgM” by ELISA kits of different formats (Vector Best, EcoLab and Siemens Companies) the statistically different results were received (p < 0.05). The optical density (OD) values of IgM in the “Measles-IgM, ser.1” and “Measles-IgM, ser.2” ILC, obtained by ELISA “VectoMeasles IgM” (Vector Best) were significantly higher than those obtained by ELISA IgEnzygnost®Anti-MeaslesVirus/IgМ. These values consisted for the ser. 1–1.33±0.02 о.u. vs. 0.18±0.01 о.u. (р < 0.05) and for the ser. 2–2.83±0.03 о.u. vs. 0.7±0.02 о.е. (р < 0.05) in the Vector Best and Siemens ELISA kits correspondently. In the “Rubella-IgM” ILC the OD values of the specific IgM by the “ELISA-Rubella IgM” EcoLab were also higher than those obtained by IgEnzygnost®Anti-RubellaVirus/IgМ ELISA kit. These values consisted 2.92±0.04 о.u. vs. 0.88±0.03 о.u. (р < 0.05) in EcoLab and Siemens ELISA test-systems correspondently. In the studies when the ILC working solution parameters for ELISA of “capture” and “indirect” formats were evaluated the statistic reliability and high information capability of the mathematic models of the OD value changes vs. the degree of dilution of the initial ILC were determined. For the “capture” and “indirect” formats the determination coefficient (R2) consisted 97.34 and 99.29 correspondently, the Fisher criteria (F) — 219.62 and 556.55 correspondently, the significance level (p) — < 0.05 for both formats. The evaluated optimal working dilution degrees of the IgM-containing ILC make possible to exclude the influence of the IgG antibodies as the non-target marker in the ILC. On the other hand, taking into account the format of the used ELISA kit the optimal working dilution degrees give the possibility to obtain the desirable 2–3 “cut-off” values of the specific marker. Moreover, the issue of the target marker quantitative content in ILC is discussed in the study. In order to improve the quality of the commer","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"7 1","pages":"69-78"},"PeriodicalIF":0.4,"publicationDate":"2017-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-25DOI: 10.15789/2220-7619-2016-2-173-178
Волков Станислав Александрович, Е. А. Бессолицына, Ф. С. Столбова, И. В. Дармов
Borreliosis, encephalitis, anaplasmosis, ehrlichiosis and babesiosis belongs to tick-borne transmissive diseases. These diseases are dangerous for human and animals as well. Moreover, some animals can have no clinical signs of these diseases. These diseases are widely spread across Russian Federation, although only encephalitis and borreliosis (Lyme disease) are being monitored nowadays. At the same time anaplasmosis, ehrlichiosis and babesiosis (pyroplasmosis) are not being monitored. Thus a goal of monitoring of these diseases appears. The main vector for these diseases are ticks. Ticks can carry and transmit causative agents of the diseases to domestic and wild animals. Thus a goal of monitoring transmissible diseases in different population of ticks gathered in our country appears. In this study PCR was chose. This method is perspective and is widely used to detect infectious diseases nowadays. Moreover this method allows getting results in quite short period of time. The goal of this work is to determine the presence of causative agents of tick-borne diseases in ticks of different species gathered in different areas of Kirov region in 2010–2015 with the help of PCR. Moreover the goal was to determine if there is a relation between a number of infected ticks and its species. To solve these goal a primers, PCR conditions, method of extraction of total nucleic acid from fixed and alive ticks were engineered. Method of extraction of total nucleic acids allowed with the help of a reverse transcriptase to determine tick-borne encephalitis virus in samples. Analyzed ticks were gathered in Kirov region. It was determined that main vectors in these region are of an Ixodes persulcatus and a Dermacentor reticulatus species. It was prooved that the number of infected ticks can vary in time. It was also proved that there is no significant difference in the number of infected with TBEV and Lyme disease causative agents but there is a significant difference in the number of infected ticks with anaplasmosis, ehrlichiosis and babesiosis causative agents.
{"title":"Анализ инфицированности клещей видов Ixodes persulcatus и Dermacentor reticulatus возбудителями трансмиссивных заболеваний на территории Кировской области","authors":"Волков Станислав Александрович, Е. А. Бессолицына, Ф. С. Столбова, И. В. Дармов","doi":"10.15789/2220-7619-2016-2-173-178","DOIUrl":"https://doi.org/10.15789/2220-7619-2016-2-173-178","url":null,"abstract":"Borreliosis, encephalitis, anaplasmosis, ehrlichiosis and babesiosis belongs to tick-borne transmissive diseases. These diseases are dangerous for human and animals as well. Moreover, some animals can have no clinical signs of these diseases. These diseases are widely spread across Russian Federation, although only encephalitis and borreliosis (Lyme disease) are being monitored nowadays. At the same time anaplasmosis, ehrlichiosis and babesiosis (pyroplasmosis) are not being monitored. Thus a goal of monitoring of these diseases appears. The main vector for these diseases are ticks. Ticks can carry and transmit causative agents of the diseases to domestic and wild animals. Thus a goal of monitoring transmissible diseases in different population of ticks gathered in our country appears. In this study PCR was chose. This method is perspective and is widely used to detect infectious diseases nowadays. Moreover this method allows getting results in quite short period of time. The goal of this work is to determine the presence of causative agents of tick-borne diseases in ticks of different species gathered in different areas of Kirov region in 2010–2015 with the help of PCR. Moreover the goal was to determine if there is a relation between a number of infected ticks and its species. To solve these goal a primers, PCR conditions, method of extraction of total nucleic acid from fixed and alive ticks were engineered. Method of extraction of total nucleic acids allowed with the help of a reverse transcriptase to determine tick-borne encephalitis virus in samples. Analyzed ticks were gathered in Kirov region. It was determined that main vectors in these region are of an Ixodes persulcatus and a Dermacentor reticulatus species. It was prooved that the number of infected ticks can vary in time. It was also proved that there is no significant difference in the number of infected with TBEV and Lyme disease causative agents but there is a significant difference in the number of infected ticks with anaplasmosis, ehrlichiosis and babesiosis causative agents.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"6 1","pages":"173-178"},"PeriodicalIF":0.4,"publicationDate":"2016-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-09DOI: 10.15789/2220-7619-2016-1-55-66
Кривицкая Вера Зорьевна, А. А. Васильева, Е М Войцеховская, Е Р Петрова, М. М. Писарева, Ж. В. Бузицкая, Е А Елпаева, А. А. Го, Любовь Васильевна Волощук, Н. И. Львов, Т. Д. Смирнова, А. А. Соминина
The aim of this investigation was a comparative analysis of isotypic structure of specific antiviral systemic humoral immune response in hospitalized patients with influenza caused by virus A(H3N2) or A(H1N1), including the A(H1N1)pdm09. Paired acute and convalescent phase sera from 109 adult patients aged 18 to 67 years with laboratoryconfirmed influenza A were analyzed by ELISA. Purified surface glycoproteins of influenza A viruses of different subtypes containing the hemagglutinin and neuraminidase were used as antigen for sensitization of plates in ELISA.The absence of type-specific conserved internal proteins in antigenic material allowed to carry out a subtype-specific differentiation of antibodies against influenza viruses in ELISA. Regardless of the subtype of influenza A viruses caused the disease, the most pronounced response was observed by subtype-specific IgG1 (70–90% of seroconversions). It has been shown for the first time that low activity of virus-induced IgG2 (6–9% of seroconversions) is a peculiarity of the immune response both to primary or recurrent infections with A(H1N1)pdm09. In patients repeatedly suffered by «seasonal» influenza A(H1N1) in 2007/2008 or influenza A(H3N2) in 2012–2014 IgG2 seroconversion’s rates were 40–59% (р < 0,05). Reaction virusspecific IgG3 was also weaker in patients with influenza A(H1N1)pdm09 (29–44% of seroconversions) than in subjects with influenza A(H1N1) or A(H3N2) (65% and 56% of seroconversions, respectively). Geometric mean titers of virus neutralizing antibodies identified during recovery phase in patients with primary and secondary influenza A(H1N1)pdm09 (1/28 and 1/103, respectively) were significantly lower than in patients recovered from influenza A(H1N1) or A(H3N2) (GMT were 1/594 and 1/378, respectively). It was shown that the surface glycoproteins of influenza A viruses may be an allergens. Virus-specific IgE seroconversion rates were comparable in all groups reaching 25–45%. The high activity of virus-induced serum IgA was detected in patients with influenza A(H3N2) or A(H1N1)pdm09 (60–79% of seroconversions). Thus, study of virus-specific activity of various immunoglobulin isotypes provides important information about the formation of adaptive antiviral immune response to influenza A viruses, and also estimate the contribution of its protective and immunopathogenic components to pathogenesis of the disease.
{"title":"ИЗОТИПИЧЕСКАЯ СТРУКТУРА ВИРУССПЕЦИФИЧЕСКОГО СИСТЕМНОГО ГУМОРАЛЬНОГО ИММУННОГО ОТВЕТА У ВЗРОСЛЫХ ПАЦИЕНТОВ, ГОСПИТАЛИЗИРОВАННЫХ С ГРИППОМ А","authors":"Кривицкая Вера Зорьевна, А. А. Васильева, Е М Войцеховская, Е Р Петрова, М. М. Писарева, Ж. В. Бузицкая, Е А Елпаева, А. А. Го, Любовь Васильевна Волощук, Н. И. Львов, Т. Д. Смирнова, А. А. Соминина","doi":"10.15789/2220-7619-2016-1-55-66","DOIUrl":"https://doi.org/10.15789/2220-7619-2016-1-55-66","url":null,"abstract":"The aim of this investigation was a comparative analysis of isotypic structure of specific antiviral systemic humoral immune response in hospitalized patients with influenza caused by virus A(H3N2) or A(H1N1), including the A(H1N1)pdm09. Paired acute and convalescent phase sera from 109 adult patients aged 18 to 67 years with laboratoryconfirmed influenza A were analyzed by ELISA. Purified surface glycoproteins of influenza A viruses of different subtypes containing the hemagglutinin and neuraminidase were used as antigen for sensitization of plates in ELISA.The absence of type-specific conserved internal proteins in antigenic material allowed to carry out a subtype-specific differentiation of antibodies against influenza viruses in ELISA. Regardless of the subtype of influenza A viruses caused the disease, the most pronounced response was observed by subtype-specific IgG1 (70–90% of seroconversions). It has been shown for the first time that low activity of virus-induced IgG2 (6–9% of seroconversions) is a peculiarity of the immune response both to primary or recurrent infections with A(H1N1)pdm09. In patients repeatedly suffered by «seasonal» influenza A(H1N1) in 2007/2008 or influenza A(H3N2) in 2012–2014 IgG2 seroconversion’s rates were 40–59% (р < 0,05). Reaction virusspecific IgG3 was also weaker in patients with influenza A(H1N1)pdm09 (29–44% of seroconversions) than in subjects with influenza A(H1N1) or A(H3N2) (65% and 56% of seroconversions, respectively). Geometric mean titers of virus neutralizing antibodies identified during recovery phase in patients with primary and secondary influenza A(H1N1)pdm09 (1/28 and 1/103, respectively) were significantly lower than in patients recovered from influenza A(H1N1) or A(H3N2) (GMT were 1/594 and 1/378, respectively). It was shown that the surface glycoproteins of influenza A viruses may be an allergens. Virus-specific IgE seroconversion rates were comparable in all groups reaching 25–45%. The high activity of virus-induced serum IgA was detected in patients with influenza A(H3N2) or A(H1N1)pdm09 (60–79% of seroconversions). Thus, study of virus-specific activity of various immunoglobulin isotypes provides important information about the formation of adaptive antiviral immune response to influenza A viruses, and also estimate the contribution of its protective and immunopathogenic components to pathogenesis of the disease.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"6 1","pages":"55-66"},"PeriodicalIF":0.4,"publicationDate":"2016-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-09DOI: 10.15789/2220-7619-2016-1-7-24
Yu. A. Panferova
Coxiella burnetii is an obligate intracellular gram-negative bacterial pathogen, an ethiological agent of Q-fever, a zoonotic disease, elapsing as an acute (mostly atypical pneumonia) or a chronic (mostly endocarditis) form. The host range is represented by wide range of mammal, avian and arthropod species, but the main source of human infection are farm animals. The main route of infection is aerosolic. In case of contact with organism pathogen binds with phagocytal monocytic-macrophagal cell line. C. burnetii promotes maturation of specific phagolysosome-like compartment in host cell, called coxiella-containing vacuole, within this vacuole pathogen becames metabolically activated and actively replicates. Coxiella persists as metabolically inactive spore-like form in environment. Internalisation of C. burnetii occurs using actin-mediated phagocytosis and zipper mechanism. After internalization of bacteria maturation of phagolysosome-like compartment and large coxiella-containing vacuole formation occure, and vacuole can occupy nearly the whole cytoplasm of the host cell. Survivance of infected cells is important for chronic infection with C. burnetii. C. burnetii elongate the viability of host cell by two ways: it actively inhibits apoptotic signal cascades and induce pro-survival factors. Except that C. burnetii involves autophagic pathway during coxiella-containing vacuole formation, and induction of autophagy promotes pathogen replication. During infection C. burnetii translocates effector substrates from bacterial cytosole to euca ryotic host cell cytosole using type IV secretion system, where effectors modulate host cell proteins. Overall approximately 130 secreted effectors of type IV transport system, but function of most of them remains unknown to date. Specific sec reted proteins for variety of strains and isolates were identified, confirmed that certain pathotypes of C. burnetii can exist. Identification and characterization of novel virulence factors it is now possible through axenic media for C. burnetii cultivation and development of site-specific mutagenesis and other genetic technics, which is important for research of C. burnetii molecular pathogenesis.
{"title":"МОЛЕКУЛЯРНЫЕ ОСНОВЫ ПАТОГЕННОСТИ COXIELLA BURNETII","authors":"Yu. A. Panferova","doi":"10.15789/2220-7619-2016-1-7-24","DOIUrl":"https://doi.org/10.15789/2220-7619-2016-1-7-24","url":null,"abstract":"Coxiella burnetii is an obligate intracellular gram-negative bacterial pathogen, an ethiological agent of Q-fever, a zoonotic disease, elapsing as an acute (mostly atypical pneumonia) or a chronic (mostly endocarditis) form. The host range is represented by wide range of mammal, avian and arthropod species, but the main source of human infection are farm animals. The main route of infection is aerosolic. In case of contact with organism pathogen binds with phagocytal monocytic-macrophagal cell line. C. burnetii promotes maturation of specific phagolysosome-like compartment in host cell, called coxiella-containing vacuole, within this vacuole pathogen becames metabolically activated and actively replicates. Coxiella persists as metabolically inactive spore-like form in environment. Internalisation of C. burnetii occurs using actin-mediated phagocytosis and zipper mechanism. After internalization of bacteria maturation of phagolysosome-like compartment and large coxiella-containing vacuole formation occure, and vacuole can occupy nearly the whole cytoplasm of the host cell. Survivance of infected cells is important for chronic infection with C. burnetii. C. burnetii elongate the viability of host cell by two ways: it actively inhibits apoptotic signal cascades and induce pro-survival factors. Except that C. burnetii involves autophagic pathway during coxiella-containing vacuole formation, and induction of autophagy promotes pathogen replication. During infection C. burnetii translocates effector substrates from bacterial cytosole to euca ryotic host cell cytosole using type IV secretion system, where effectors modulate host cell proteins. Overall approximately 130 secreted effectors of type IV transport system, but function of most of them remains unknown to date. Specific sec reted proteins for variety of strains and isolates were identified, confirmed that certain pathotypes of C. burnetii can exist. Identification and characterization of novel virulence factors it is now possible through axenic media for C. burnetii cultivation and development of site-specific mutagenesis and other genetic technics, which is important for research of C. burnetii molecular pathogenesis.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"6 1","pages":"7-24"},"PeriodicalIF":0.4,"publicationDate":"2016-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-01-01DOI: 10.15789/2220-7619-2016-4-345-352
I. S. Malakhov, R. I. Al-Shehadat, I. V. Duckhovlinov, A. S. Simbirtsev
The cervical cancer is one of the most common diseases in world. This malignancy is the seventh highest prevalence oncological disease worldwide and the second highest prevalence oncological disease of women in the world. Meanwhile women need to be infected by human papilloma virus (HPV) is absolutely necessary for it further evolution, HPV DNA was found in 99.97% cases of disease. Except cervical cancer, HPV cause 85% of rectal cancer, 50% of the vulva, vagina and penis cancers, 20% of oropharyngeal cancer and 10% of larynx and esophagus cancers. In 2009, 14 000 women were diagnosed with cervical cancer in Russia. The growth in morbidity was 19% (in comparison with 1999). The most effective recognised measure for almost each infection prophylaxis is a vaccination. Two human papilloma virus vaccines are available in Russia nowadays — Gardasil and Cervarix, produced in Belgium and the Netherlands respectively. Cervarix is a bivalent vaccine based on virus-like particles (VLP) of two types. Recombinant major capsid proteins L1 HPV 16 and HPV 18 express in baculovirus expression system and self-assembled into virus-like particles (about 70 percent of cervical cancers are caused by HPV 16 and HPV 18). VLP of each strain produced in different baculovirus vectors and then combined in single drug. Gardasil is like Cervarix with few exceptions. Producing organisms are fungi S. cerevisiae in this case, and this vaccine contains low-risk HPV 6 and HPV 11 VLP. Thus, Gardasil is quadrivalent HPV-6/11/16/18 vaccine. These vaccines are very effective in averting infection of disease and don’t have significant side-effects, however they have some disadvantages. Firstly, they have a high price because of necessity of their expression in eukaryotic cells. Secondly, they are strain-specific, so vaccines are completely effective only for virus’s strains which are represented in the vaccine. Thirdly, it`s the absence of therapeutic (treatment of established infection) value of stated vaccines. According to information from literature, N-terminus of the L2 protein can induce non strain-specific neutralizing antibody that protects organism from papillomavirus challenge. E7 protein is a virus oncogene, its function is unlimited proliferation of infected cells that cause malignization in chronic course of disease. This protein is a very attractive target for therapeutic vaccines because of its necessity both for virus life cycle and sustenance of malignant phenotype in cancer cells. So, in this research the design of immunogen on the base of proteins HPV L2 and E7 is selected, vaccine on the base of which will avoid the disadvantages of Gardasil and Cervarix listed above. The stain-producer of protein on the base of cells E. coli was created. The protein was purified in denaturing reducing conditions by metal-affine chromatography and refold by sequential remove of urea and 2-mercaptoethanol.
{"title":"СОЗДАНИЕ ИММУНОГЕНА ПРОТИВ ВИРУСА ПАПИЛЛОМЫ ЧЕЛОВЕКА НА ОСНОВЕ ХИМЕРНОГО РЕКОМБИНАНТНОГО БЕЛКА L2E7","authors":"I. S. Malakhov, R. I. Al-Shehadat, I. V. Duckhovlinov, A. S. Simbirtsev","doi":"10.15789/2220-7619-2016-4-345-352","DOIUrl":"https://doi.org/10.15789/2220-7619-2016-4-345-352","url":null,"abstract":"The cervical cancer is one of the most common diseases in world. This malignancy is the seventh highest prevalence oncological disease worldwide and the second highest prevalence oncological disease of women in the world. Meanwhile women need to be infected by human papilloma virus (HPV) is absolutely necessary for it further evolution, HPV DNA was found in 99.97% cases of disease. Except cervical cancer, HPV cause 85% of rectal cancer, 50% of the vulva, vagina and penis cancers, 20% of oropharyngeal cancer and 10% of larynx and esophagus cancers. In 2009, 14 000 women were diagnosed with cervical cancer in Russia. The growth in morbidity was 19% (in comparison with 1999). The most effective recognised measure for almost each infection prophylaxis is a vaccination. Two human papilloma virus vaccines are available in Russia nowadays — Gardasil and Cervarix, produced in Belgium and the Netherlands respectively. Cervarix is a bivalent vaccine based on virus-like particles (VLP) of two types. Recombinant major capsid proteins L1 HPV 16 and HPV 18 express in baculovirus expression system and self-assembled into virus-like particles (about 70 percent of cervical cancers are caused by HPV 16 and HPV 18). VLP of each strain produced in different baculovirus vectors and then combined in single drug. Gardasil is like Cervarix with few exceptions. Producing organisms are fungi S. cerevisiae in this case, and this vaccine contains low-risk HPV 6 and HPV 11 VLP. Thus, Gardasil is quadrivalent HPV-6/11/16/18 vaccine. These vaccines are very effective in averting infection of disease and don’t have significant side-effects, however they have some disadvantages. Firstly, they have a high price because of necessity of their expression in eukaryotic cells. Secondly, they are strain-specific, so vaccines are completely effective only for virus’s strains which are represented in the vaccine. Thirdly, it`s the absence of therapeutic (treatment of established infection) value of stated vaccines. According to information from literature, N-terminus of the L2 protein can induce non strain-specific neutralizing antibody that protects organism from papillomavirus challenge. E7 protein is a virus oncogene, its function is unlimited proliferation of infected cells that cause malignization in chronic course of disease. This protein is a very attractive target for therapeutic vaccines because of its necessity both for virus life cycle and sustenance of malignant phenotype in cancer cells. So, in this research the design of immunogen on the base of proteins HPV L2 and E7 is selected, vaccine on the base of which will avoid the disadvantages of Gardasil and Cervarix listed above. The stain-producer of protein on the base of cells E. coli was created. The protein was purified in denaturing reducing conditions by metal-affine chromatography and refold by sequential remove of urea and 2-mercaptoethanol.","PeriodicalId":42907,"journal":{"name":"Infektsiya i Immunitet","volume":"6 1","pages":"345-352"},"PeriodicalIF":0.4,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67113537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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