During the period 2009–2016, brown hares (Lepus europeus L.) from different regions of Bulgaria were investigated for infections with liver parasites as well as for seroprevalence of protozoan Toxoplasma gondii. Three helminth species were found in the liver: one trematode – Dicrocoelium dendriticum, one cestode – larval form of Taenia pisiformis – Cysticercus pisiformis and one nematode – Micipsella numidica. Dicrocoeliasis was found in all parts of the country with infected hares originating mainly from the western regions. The total prevalence of infection with D. dendriticum was 10.59%. The intensity of infection ranged from 1 to 184, 26.67 on the average. The total prevalence of infection with C. pisiformis was 16.8%. The prevalence of infection was highest among hares from the southern parts of the country, and no cysticercosis was registered in the western parts. The extent of infestation with cysticerci was different – from single cysticerci on the omentum or serosa of some organs in the abdominal cavity to innumerable ones that affected also the organs in the thoracic cavity. However, cases in which the animals were slightly affected, predominated. The total prevalence of infection with M. numidica was 5.31%, and the intensity of infection varied between 1 and 6 parasites in one animal. The nematodiasis was established mainly in hares from southern Bulgaria. The total seroprevalence of T. gondii was 6.15% and the protozoan-positive animals originated from three districts: Stara Zagora, Plovdiv, and Burgas. The current studies also showed that the prevalence of D. dendriticum infection among animals increased with age. No correlation was observed between prevalence of infection with C. pisiformis and M. numidica and host age. No correlation was found between the prevalence of the helminth infections and sex of the animals.
{"title":"Infections with Dicrocoelium dendriticum, Cysticercus pisiformis, Micipsella numidica and seroprevalence of Toxoplasma gondii in European brown hares (Lepus europeus L.) from Bulgaria","authors":"A. Trifonova, M. Panayotova-Pencheva, E. Kaneva","doi":"10.15547/bjvm.2021-0025","DOIUrl":"https://doi.org/10.15547/bjvm.2021-0025","url":null,"abstract":"During the period 2009–2016, brown hares (Lepus europeus L.) from different regions of Bulgaria were investigated for infections with liver parasites as well as for seroprevalence of protozoan Toxoplasma gondii. Three helminth species were found in the liver: one trematode – Dicrocoelium dendriticum, one cestode – larval form of Taenia pisiformis – Cysticercus pisiformis and one nematode – Micipsella numidica. Dicrocoeliasis was found in all parts of the country with infected hares originating mainly from the western regions. The total prevalence of infection with D. dendriticum was 10.59%. The intensity of infection ranged from 1 to 184, 26.67 on the average. The total prevalence of infection with C. pisiformis was 16.8%. The prevalence of infection was highest among hares from the southern parts of the country, and no cysticercosis was registered in the western parts. The extent of infestation with cysticerci was different – from single cysticerci on the omentum or serosa of some organs in the abdominal cavity to innumerable ones that affected also the organs in the thoracic cavity. However, cases in which the animals were slightly affected, predominated. The total prevalence of infection with M. numidica was 5.31%, and the intensity of infection varied between 1 and 6 parasites in one animal. The nematodiasis was established mainly in hares from southern Bulgaria. The total seroprevalence of T. gondii was 6.15% and the protozoan-positive animals originated from three districts: Stara Zagora, Plovdiv, and Burgas. The current studies also showed that the prevalence of D. dendriticum infection among animals increased with age. No correlation was observed between prevalence of infection with C. pisiformis and M. numidica and host age. No correlation was found between the prevalence of the helminth infections and sex of the animals.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78397722","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}
Due to the similar pattern of ghrelin localisation in human and porcine intestine, swine are described as a suitable animal model for experiments related to ghrelin and its receptors. In a previous study of ours, the presence of ghrelin immunoreactive endocrine cells in common bile duct (Ductus choledochus) (CBD) of domestic swine was established. However, data regarding the distribution of mast cell types in the CBD in this species are missing. The current study aimed to determine the distribution of tryptase-, ghrelin- and toluidine blue positive mast cells in the wall of extra- and intramural parts of porcine CBD. For this purpose, immunohistochemical staining for detection of tryptase was performed in order to identify ghrelin reactivity in mast cells. Additionally, toluidine blue staining was carried out to compare the number of metachromatic mast cells with that of tryptase positive cells. The comparative quantitative analysis showed that the number of tryptase immunorective cells was higher than that of metachromatic ones in the CBD wall. Ghrelin immunoreactive cells were the most numerous, therefore it can be assumed that not only mast cells but other cells also contain ghrelin. The three mast cells types were more abundant in the propria and subserosa of the intramural part than in the same layers of extramural CBD part. In the muscle layer, mast cell number was higher in the extramural than in the intramural part of the duct. In conclusion, taking into account the results obtained, an important role of mast cells play in controlling CBD motility and biliary gland function was suggested.
{"title":"Mast cell distribution in porcine common bile duct with special reference to ghrelin","authors":"I. Stefanov","doi":"10.15547/bjvm.2020-0127","DOIUrl":"https://doi.org/10.15547/bjvm.2020-0127","url":null,"abstract":"Due to the similar pattern of ghrelin localisation in human and porcine intestine, swine are described as a suitable animal model for experiments related to ghrelin and its receptors. In a previous study of ours, the presence of ghrelin immunoreactive endocrine cells in common bile duct (Ductus choledochus) (CBD) of domestic swine was established. However, data regarding the distribution of mast cell types in the CBD in this species are missing. The current study aimed to determine the distribution of tryptase-, ghrelin- and toluidine blue positive mast cells in the wall of extra- and intramural parts of porcine CBD. For this purpose, immunohistochemical staining for detection of tryptase was performed in order to identify ghrelin reactivity in mast cells. Additionally, toluidine blue staining was carried out to compare the number of metachromatic mast cells with that of tryptase positive cells. The comparative quantitative analysis showed that the number of tryptase immunorective cells was higher than that of metachromatic ones in the CBD wall. Ghrelin immunoreactive cells were the most numerous, therefore it can be assumed that not only mast cells but other cells also contain ghrelin. The three mast cells types were more abundant in the propria and subserosa of the intramural part than in the same layers of extramural CBD part. In the muscle layer, mast cell number was higher in the extramural than in the intramural part of the duct. In conclusion, taking into account the results obtained, an important role of mast cells play in controlling CBD motility and biliary gland function was suggested.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88330838","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}
The antimicrobial effect of colloidal nanosilver (AgNPs) at concentrations of 20 and 30 ppm against reference Esherichia coli, Salmonella enterica, Staphylococcus aureus, Clostridium perfringens, Candida albicans strains and two clinical isolates (Pseudominas aeruginosa and Streptococcus pyogenes) was tested. The classical agar diffusion method, determination of the minimum inhibitory concentrations (MIC) and the time of antimicrobial action of AgNPs were used. In the studies performed by the agar diffusion method, a very good inhibitory effect of AgNPs 30 ppm and to a much lesser extent of AgNPs 20 ppm, was reported against all studied microorganisms. The studied Gram-negative bacteria showed higher sensitivity to both preparations compared to the Gram-positive microorganisms (P>0.05). The lowest sensitivity was reported for S. aureus and C. albicans, and the highest - for P. aeruginosa and S. pyogenes. The lowest MICs of AgNPs 20 ppm were reported for P. aeruginosa and C. perfringens. For them, the MIC50 was 1 μg/mL, and for the rest - 2 μg/mL. Again, C. perfringens showed the highest sensitivity to AgNPs 30 ppm with MIC50 0.5 μg/mL, and the lowest one was that of S. aureus with MIC50 2 μg/mL. For the Gram-positive bacteria MIC values were higher than for Gram-negative ones. AgNPs 20 ppm and AgNPs 30 ppm inactivated all bacterial strains tested at final concentrations of 103 cells/mL and 104 cells/mL within 5 min; only C. albicans persisted longer. The tested microorganisms remained viable for significantly longer time in the presence of AgNPs 20 ppm and AgNPs 30 ppm when in suspensions with a density of 106 cells/mL. These results are promising for the successful use of AgNPs for disinfection, as well as for topical therapy of infections involving these bacterial species.
{"title":"In vitro antimicrobial activity of colloidal nano silver","authors":"T. Popova, I. Ignatov","doi":"10.15547/bjvm.2411","DOIUrl":"https://doi.org/10.15547/bjvm.2411","url":null,"abstract":"The antimicrobial effect of colloidal nanosilver (AgNPs) at concentrations of 20 and 30 ppm against reference Esherichia coli, Salmonella enterica, Staphylococcus aureus, Clostridium perfringens, Candida albicans strains and two clinical isolates (Pseudominas aeruginosa and Streptococcus pyogenes) was tested. The classical agar diffusion method, determination of the minimum inhibitory concentrations (MIC) and the time of antimicrobial action of AgNPs were used. In the studies performed by the agar diffusion method, a very good inhibitory effect of AgNPs 30 ppm and to a much lesser extent of AgNPs 20 ppm, was reported against all studied microorganisms. The studied Gram-negative bacteria showed higher sensitivity to both preparations compared to the Gram-positive microorganisms (P>0.05). The lowest sensitivity was reported for S. aureus and C. albicans, and the highest - for P. aeruginosa and S. pyogenes. The lowest MICs of AgNPs 20 ppm were reported for P. aeruginosa and C. perfringens. For them, the MIC50 was 1 μg/mL, and for the rest - 2 μg/mL. Again, C. perfringens showed the highest sensitivity to AgNPs 30 ppm with MIC50 0.5 μg/mL, and the lowest one was that of S. aureus with MIC50 2 μg/mL. For the Gram-positive bacteria MIC values were higher than for Gram-negative ones. AgNPs 20 ppm and AgNPs 30 ppm inactivated all bacterial strains tested at final concentrations of 103 cells/mL and 104 cells/mL within 5 min; only C. albicans persisted longer. The tested microorganisms remained viable for significantly longer time in the presence of AgNPs 20 ppm and AgNPs 30 ppm when in suspensions with a density of 106 cells/mL. These results are promising for the successful use of AgNPs for disinfection, as well as for topical therapy of infections involving these bacterial species.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85576778","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}
This paper discusses the results of research related to cultivation of the probiotic microorganism B. subtilis on a grain-based nutrient medium of naked oat (Avena nuda) and studies the possibility of using metabolites as a liquid dietary supplement to correct microbiocenosis gastrointestinal tract disorders in early-weaned piglets. The weight fraction of proteinogenic amino acids in the experimental probiotic suspensions was determined by means of capillary electrophoresis. The metabolic activity of Bacillus subtilis DSM-32424 strain was studied on both sprouted as well as non-sprouted naked oat (Avena nuda) ‘Nemchinovsky’ variety grain-based nutrient medium. It was proved that the maximum microbial count reached 4.9×107 CFU/cm3 on the 6th day of cultivation on the medium based on sprouted naked oat. The use of dietary supplement based on Bacillus subtilis DSM-32424 strain in amount of at least 1×109 CFU/pig had a positive impact in terms of the formation of microbiocenosis in animals at the time of transferring piglets to plant diet.
{"title":"Effects of metabiotic Bacillus subtilis for microbiocenosis formation in early-weaned piglets","authors":"V. Popov, N. Naumov, G. Svazlyan","doi":"10.15547/bjvm.2021-0062","DOIUrl":"https://doi.org/10.15547/bjvm.2021-0062","url":null,"abstract":"This paper discusses the results of research related to cultivation of the probiotic microorganism B. subtilis on a grain-based nutrient medium of naked oat (Avena nuda) and studies the possibility of using metabolites as a liquid dietary supplement to correct microbiocenosis gastrointestinal tract disorders in early-weaned piglets. The weight fraction of proteinogenic amino acids in the experimental probiotic suspensions was determined by means of capillary electrophoresis. The metabolic activity of Bacillus subtilis DSM-32424 strain was studied on both sprouted as well as non-sprouted naked oat (Avena nuda) ‘Nemchinovsky’ variety grain-based nutrient medium. It was proved that the maximum microbial count reached 4.9×107 CFU/cm3 on the 6th day of cultivation on the medium based on sprouted naked oat. The use of dietary supplement based on Bacillus subtilis DSM-32424 strain in amount of at least 1×109 CFU/pig had a positive impact in terms of the formation of microbiocenosis in animals at the time of transferring piglets to plant diet.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135652491","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}
Lumpy skin disease (LSD) is a viral disease, geographically distributed in Africa and now, vigorously spread in the Near East and also in Europe and Asia. It has a significant economic impact on cattle industry in Africa. The aim of this study was isolation and rapid identification of LSD virus circulating in Egypt from clinically suspected cattle based on clinical and molecular basis in a rapid and accurate way. Fifteen representative specimens (skin sitfasts) were collected in 2018 from clinically infected cattle in Giza governorate, Egypt. The virus was isolated on chorioallantoic membrane of specific pathogen free embryonated chicken eggs and Madin Darby Bovine Kidney tissue culture cells. The isolated virus was identified and confirmed by conventional polymerase chain reaction (PCR) and real-time PCR. Histopathological examination of the lesions showed a pathognomic intracytoplasmic inclusion body in dermal stroma section. The section of dermal layer revealed vasculitis with projection of its endothelial lining. It was concluded that LSD was enzootic in Egypt and still circulating among Egyptian cattle so that LSD virus could be isolated and identified by traditional and molecular diagnostic methodes. Real time PCR assay could be applied for rapid and accurate confirmation of the field isolate of LSD virus.
结节性皮肤病(LSD)是一种病毒性疾病，地理上分布在非洲，现在在近东以及欧洲和亚洲大力传播。它对非洲的养牛业有重大的经济影响。本研究的目的是基于临床和分子基础，快速准确地从埃及临床疑似牛中分离和快速鉴定流行的LSD病毒。2018年从埃及吉萨省临床感染的牛中收集了15个代表性标本(皮肤标本)。该病毒是在特异性无病原体胚化鸡蛋的绒毛膜和牛肾组织培养细胞上分离得到的。采用常规聚合酶链反应(PCR)和实时聚合酶链反应(real-time PCR)对分离的病毒进行鉴定和鉴定。组织病理学检查显示真皮间质切片呈病理型胞浆内包涵体。真皮层切片显示血管炎，内皮内膜突出。结论:LSD在埃及是地方性的，并且仍在埃及牛中传播，因此LSD病毒可以通过传统和分子诊断方法分离和鉴定。实时聚合酶链反应(Real - time PCR)技术可以快速、准确地鉴定LSD病毒的田间分离株。
{"title":"Identification and characterisation of lumpy skin disease virus recently isolated from Giza, Egypt","authors":"C. Mikhael, H. Abd El Aziz, A. M. Ali","doi":"10.15547/bjvm.2021-0008","DOIUrl":"https://doi.org/10.15547/bjvm.2021-0008","url":null,"abstract":"Lumpy skin disease (LSD) is a viral disease, geographically distributed in Africa and now, vigorously spread in the Near East and also in Europe and Asia. It has a significant economic impact on cattle industry in Africa. The aim of this study was isolation and rapid identification of LSD virus circulating in Egypt from clinically suspected cattle based on clinical and molecular basis in a rapid and accurate way. Fifteen representative specimens (skin sitfasts) were collected in 2018 from clinically infected cattle in Giza governorate, Egypt. The virus was isolated on chorioallantoic membrane of specific pathogen free embryonated chicken eggs and Madin Darby Bovine Kidney tissue culture cells. The isolated virus was identified and confirmed by conventional polymerase chain reaction (PCR) and real-time PCR. Histopathological examination of the lesions showed a pathognomic intracytoplasmic inclusion body in dermal stroma section. The section of dermal layer revealed vasculitis with projection of its endothelial lining. It was concluded that LSD was enzootic in Egypt and still circulating among Egyptian cattle so that LSD virus could be isolated and identified by traditional and molecular diagnostic methodes. Real time PCR assay could be applied for rapid and accurate confirmation of the field isolate of LSD virus.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90292299","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}
The aims of this retrospective study were to determine the prevalence of FeLV and co-infection with FeLV and FIV among feline population of Moscow and the Moscow region, Russia, to determine the risk factors associated with the disease and to describe the clinical syndromes, haematological and biochemical abnormalities in infected cats. The prevalence of FeLV and FeLV+FIV co-infection was investigated among 11,807 cats living in Moscow and the Moscow region using PCR, ELISA and ICT methods. The overall prevalence of FeLV among household domestic cats was 12.8%. FeLV was most commonly detected in male mixed-breed cats and the cats with free outdoor access. Ninety cases of co-infection with FeLV and FIV (0.76% of the cat population) were also detected. The most common clinical signs seen in infected cats were those associated with the gastrointestinal tract. Anaemia was a common haematological abnormality in infected cats. The results of biochemical assays were nonspecific and associated with inflammatory processes in infected cats. The risk factors associated with FeLV infection were sex, breed, age, contacts with other cats and a history of outdoor access. The results presented in the study indicated a high prevalence of FeLV and a low prevalence of FeLV+FIV co-infection in cats living in Moscow and the Moscow region, Russia.
{"title":"Prevalence, haematological, biochemical abnormalities and clinical syndromes of FeLV and FeLV/FIV co-infection among cat population in Moscow and the Moscow region, Russia","authors":"A. P. Zenchenkova, V. Makarov, Bjvm","doi":"10.15547/bjvm.2021-0001","DOIUrl":"https://doi.org/10.15547/bjvm.2021-0001","url":null,"abstract":"The aims of this retrospective study were to determine the prevalence of FeLV and co-infection with FeLV and FIV among feline population of Moscow and the Moscow region, Russia, to determine the risk factors associated with the disease and to describe the clinical syndromes, haematological and biochemical abnormalities in infected cats. The prevalence of FeLV and FeLV+FIV co-infection was investigated among 11,807 cats living in Moscow and the Moscow region using PCR, ELISA and ICT methods. The overall prevalence of FeLV among household domestic cats was 12.8%. FeLV was most commonly detected in male mixed-breed cats and the cats with free outdoor access. Ninety cases of co-infection with FeLV and FIV (0.76% of the cat population) were also detected. The most common clinical signs seen in infected cats were those associated with the gastrointestinal tract. Anaemia was a common haematological abnormality in infected cats. The results of biochemical assays were nonspecific and associated with inflammatory processes in infected cats. The risk factors associated with FeLV infection were sex, breed, age, contacts with other cats and a history of outdoor access. The results presented in the study indicated a high prevalence of FeLV and a low prevalence of FeLV+FIV co-infection in cats living in Moscow and the Moscow region, Russia.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76790631","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}
The aim of this report was to present a case of exertional rhabdomyolysis in a fallow deer. The diagnosis was made on the basis of clinical and blood laboratory findings. Despite the treatment, the outcome was fatal. Gross anatomy and histopathological examinations were performed, detecting degenerative changes in the heart, skeletal muscles, the kidneys and the liver. On the basis of ante and post mortem findings providing explanations of the pathophysiological mechanism of severe tissue damage - hypoxaemia, severe lactic acidosis, muscle rupture, electrolyte imbalance and renal block, it was concluded that all they have led to the death of the animal.
{"title":"Exertional rhabdomyolysis in a fallow deer (Cervus dama)","authors":"G. Simeonova, I. Kalkanov","doi":"10.15547/bjvm.2352","DOIUrl":"https://doi.org/10.15547/bjvm.2352","url":null,"abstract":"The aim of this report was to present a case of exertional rhabdomyolysis in a fallow deer. The diagnosis was made on the basis of clinical and blood laboratory findings. Despite the treatment, the outcome was fatal. Gross anatomy and histopathological examinations were performed, detecting degenerative changes in the heart, skeletal muscles, the kidneys and the liver. On the basis of ante and post mortem findings providing explanations of the pathophysiological mechanism of severe tissue damage - hypoxaemia, severe lactic acidosis, muscle rupture, electrolyte imbalance and renal block, it was concluded that all they have led to the death of the animal.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88970100","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}
Respiratory infections caused by Streptococcus equi are one of the most important diseases in the equine industry. The increasing rate of antibiotic resistance among this bacterial species necessitates new antimicrobial agents. In this research, nasopharyngeal samples were taken from horses (n=90) in some areas of the Golestan Province, Iran. After isolation and identification of S. equi strains, antibiotic resistance of the isolates was evaluated using the Kirby-Bauer method. The antibacterial effect of lavender essential oil was investigated by broth microdilution assay. The frequency of streptococcal strains was 27.8%. The most frequent isolates were S. equi subsp. equi (72%) and S. equi subsp. zooepidemicus (28%). The frequency of S. equi was highest in horses aged less than 2 years (69.3%) and thoroughbred Turkmen horses (61.5%). The highest rate of resistance was observed against amoxicillin, while the highest rate of sensitivity was to ceftriaxone. Furthermore, the essential oil of lavender inhibited 90% of the isolates at concentrations ≥2048 μL/mL. Our study revealed that the frequency of antibiotic-resistant S. equi isolates was relatively high in the studied population of horses in Iran. It was concluded that essential oil of lavender possessed more potent in vitro activity than the common antibiotics for treatment of infections caused by S. equi subspecies.
{"title":"A new solution for control of respiratory infection by Streptococcus equi isolated from horses in northern Iran","authors":"M. Yaghoobpour, L. Fozouni, P. Ghaemi","doi":"10.15547/bjvm.2020-0144","DOIUrl":"https://doi.org/10.15547/bjvm.2020-0144","url":null,"abstract":"Respiratory infections caused by Streptococcus equi are one of the most important diseases in the equine industry. The increasing rate of antibiotic resistance among this bacterial species necessitates new antimicrobial agents. In this research, nasopharyngeal samples were taken from horses (n=90) in some areas of the Golestan Province, Iran. After isolation and identification of S. equi strains, antibiotic resistance of the isolates was evaluated using the Kirby-Bauer method. The antibacterial effect of lavender essential oil was investigated by broth microdilution assay. The frequency of streptococcal strains was 27.8%. The most frequent isolates were S. equi subsp. equi (72%) and S. equi subsp. zooepidemicus (28%). The frequency of S. equi was highest in horses aged less than 2 years (69.3%) and thoroughbred Turkmen horses (61.5%). The highest rate of resistance was observed against amoxicillin, while the highest rate of sensitivity was to ceftriaxone. Furthermore, the essential oil of lavender inhibited 90% of the isolates at concentrations ≥2048 μL/mL. Our study revealed that the frequency of antibiotic-resistant S. equi isolates was relatively high in the studied population of horses in Iran. It was concluded that essential oil of lavender possessed more potent in vitro activity than the common antibiotics for treatment of infections caused by S. equi subspecies.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89443714","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}
K. Kamalzadeh, M. Esmaelizad, J. Ghalani, P. Khaki, M. Tebianian
Leptospirosis is an emerging infectious zoonotic disease caused by pathogenic Leptospira. The disease is more prevalent among farmers in hot and humid areas of Iran. Lack of clear clinical signs have impeded the diagnosis of leptospirosis. In this study, we attempted to produce a recombinant LipL21 protein of Leptospira based on a dominant pattern of Iranian isolates and to evaluate it in ELISA test. One hundred and sixty-two complete sequences of LipL21 available in GenBank until January 1, 2019 were compared. One dominant LipL21 protein pattern was selected. The codon optimised sequence was cloned into the pET32a+ expression vector. Trx-LipL21 fusion protein was induced, purified and confirmed by 10% SDS-PAGE followed Coomassie blue staining and immune blotting. For evaluation of effectiveness of rLip21 in ELISA test, 200 µg rLip21 with Montanide ISA70 adjuvant was injected subcutaneously in rabbits three times. Results showed that rLipL21 protein was highly expressed in 2YT media in presence of 0.1 mM IPTG after 16 hours incubation at 37 oC. Recombinant protein was purified 36 mg per liter using affinity batch formation method by Ni-NTA resin. ELISA with micro plate coated with 250 ng rLipL21 protein demonstrated prominently differences between test and control groups (P<0.01). The rLipL21 protein produced large amounts of antibodies in the rabbit. The protein was also able to detect high levels of antibody in animals immunised with Leptospira vaccine. The rLipL21 might be a good candidate for diagnosis and evaluation of antibody levels against Leptospira.
钩端螺旋体病是一种由致病性钩端螺旋体引起的新型传染性人畜共患疾病。这种疾病在伊朗湿热地区的农民中更为普遍。缺乏明确的临床症状阻碍了钩端螺旋体病的诊断。在这项研究中，我们试图基于伊朗钩端螺旋体分离株的优势模式制备重组LipL21蛋白，并在ELISA试验中对其进行评价。对GenBank中截至2019年1月1日的162个LipL21完整序列进行了比较。选择了一个显性的LipL21蛋白模式。将优化后的密码子序列克隆到pET32a+表达载体上。Trx-LipL21融合蛋白经10% SDS-PAGE诱导纯化，考马斯蓝染色和免疫印迹证实。为了评价rLip21在ELISA试验中的有效性，将200µg rLip21与Montanide ISA70佐剂一起皮下注射兔3次。结果表明，rLipL21蛋白在0.1 mM IPTG存在的2YT培养基中，37℃孵育16 h后高表达。重组蛋白采用Ni-NTA树脂亲和批成法纯化36 mg / l。250 ng rLipL21蛋白包被微板ELISA检测结果与对照组比较差异有统计学意义(P<0.01)。rLipL21蛋白在家兔体内产生大量抗体。该蛋白还能够检测到钩端螺旋体疫苗免疫动物体内的高水平抗体。rLipL21可能是钩端螺旋体抗体水平诊断和评价的良好候选。
{"title":"High expression of LipL21 protein of Iranian Leptospira interrogans in E. coli, applicable for diagnostic ELISA","authors":"K. Kamalzadeh, M. Esmaelizad, J. Ghalani, P. Khaki, M. Tebianian","doi":"10.15547/bjvm.2021-0052","DOIUrl":"https://doi.org/10.15547/bjvm.2021-0052","url":null,"abstract":"Leptospirosis is an emerging infectious zoonotic disease caused by pathogenic Leptospira. The disease is more prevalent among farmers in hot and humid areas of Iran. Lack of clear clinical signs have impeded the diagnosis of leptospirosis. In this study, we attempted to produce a recombinant LipL21 protein of Leptospira based on a dominant pattern of Iranian isolates and to evaluate it in ELISA test. One hundred and sixty-two complete sequences of LipL21 available in GenBank until January 1, 2019 were compared. One dominant LipL21 protein pattern was selected. The codon optimised sequence was cloned into the pET32a+ expression vector. Trx-LipL21 fusion protein was induced, purified and confirmed by 10% SDS-PAGE followed Coomassie blue staining and immune blotting. For evaluation of effectiveness of rLip21 in ELISA test, 200 µg rLip21 with Montanide ISA70 adjuvant was injected subcutaneously in rabbits three times. Results showed that rLipL21 protein was highly expressed in 2YT media in presence of 0.1 mM IPTG after 16 hours incubation at 37 oC. Recombinant protein was purified 36 mg per liter using affinity batch formation method by Ni-NTA resin. ELISA with micro plate coated with 250 ng rLipL21 protein demonstrated prominently differences between test and control groups (P<0.01). The rLipL21 protein produced large amounts of antibodies in the rabbit. The protein was also able to detect high levels of antibody in animals immunised with Leptospira vaccine. The rLipL21 might be a good candidate for diagnosis and evaluation of antibody levels against Leptospira.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135556485","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}
The aim of this study was to determine species-specific features of arterial vascularisation of the auditory tube of domestic pigs as a segment connecting the nasopharynx and the middle ear with regard to the increasing role of pigs as most appropriate model of human biomedical research. The arterial branches involved in the vascularisation of the auditory tube were described on corrosion casts. It was found out that in the direction of the middle ear, the tube received blood from branches of a. palatina ascendens, a. meningea media, a. temporalis profunda caudalis and rete mirabile epidurale rostrale, out of which the first of enumerated arteries was the most involved. In the majority of cases (87.5%) it gave off two branches that ramified in the lateral and medial walls of the tube. For the first time, it was demonstrated that a. palatina ascendens was separated from the facial artery and not from a. lingualis. The measurements on casts showed that the diameter of left a. palatina ascendens was statistically significantly larger than right one in both sexes, and that average diameters of either right or left arteries were larger in males. The results allowed concluding that a. palatina ascendens was predominantly involved in the arterial blood supply of porcine auditory tube.
{"title":"Arterial vascularisation of pig’s auditory tube with respect to a. palatina ascendens – a corrosion cast and morphometric study","authors":"N. Tsandev","doi":"10.15547/bjvm.2366","DOIUrl":"https://doi.org/10.15547/bjvm.2366","url":null,"abstract":"The aim of this study was to determine species-specific features of arterial vascularisation of the auditory tube of domestic pigs as a segment connecting the nasopharynx and the middle ear with regard to the increasing role of pigs as most appropriate model of human biomedical research. The arterial branches involved in the vascularisation of the auditory tube were described on corrosion casts. It was found out that in the direction of the middle ear, the tube received blood from branches of a. palatina ascendens, a. meningea media, a. temporalis profunda caudalis and rete mirabile epidurale rostrale, out of which the first of enumerated arteries was the most involved. In the majority of cases (87.5%) it gave off two branches that ramified in the lateral and medial walls of the tube. For the first time, it was demonstrated that a. palatina ascendens was separated from the facial artery and not from a. lingualis. The measurements on casts showed that the diameter of left a. palatina ascendens was statistically significantly larger than right one in both sexes, and that average diameters of either right or left arteries were larger in males. The results allowed concluding that a. palatina ascendens was predominantly involved in the arterial blood supply of porcine auditory tube.","PeriodicalId":9279,"journal":{"name":"BULGARIAN JOURNAL OF VETERINARY MEDICINE","volume":"145 16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87515700","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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