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POLYVALENT BACTERIOPHAGES AND OXYGENATED WATER – POSSIBILITIES FOR PREVENTION OF SURGICAL SITE INFECTION DURING EMERGENCY ABDOMINAL SURGERY 多价噬菌体和含氧水&预防紧急腹部手术中手术部位感染的可能性
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.812
DMITRY PARSHIN, Vyacheslav Mykhaylichenko, A. Kupriyanov, Ramazan Alibekov, R. Mardanov, Enver Kеrimov, G. Puchkina, O. Bezrukov, A. Abdullaev
We carried out a single-center study of the effectiveness of polyvalent bacteriophages and oxygenated water for the prevention of SSI. The object was 88 patients who had undergone abdominal surgery for emergency abdominal pathology with a high risk of SSI >30±3% (ACS NSQIP). Phages were administered topically and enterally, while OW only enterally. As a result of the study, it turned out that the combined use of PVBP and OW allows to normalize the induced enteral pathobiome, to reduce pathogen contamination, to enhance the protective capabilities of enterocytes, to stop intestinal failure in the early stages and to reduce the risk of SSI by more than 2 times.
我们对多价噬菌体和氧合水预防SSI的有效性进行了单中心研究。研究对象为88例因急诊腹部病理行腹部外科手术的SSI高危患者(ACS NSQIP), SSI发生率为0.30±3%。噬菌体局部和肠内给药,而OW仅肠内给药。研究结果表明,PVBP联合OW可使诱导的肠内病理组正常化,减少病原体污染,增强肠细胞的保护能力,早期阻止肠衰竭,使SSI的风险降低2倍以上。
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引用次数: 0
CELLULAR PHENOTYPES OF GLIOBLASTOMA AND PROGNOSIS OF TUMOR OUTCOME 胶质母细胞瘤的细胞表型与肿瘤预后
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.814
I. Reva, Tatsuo Yamamoto, E. Mozhilevskaya, Ekaterina Zinkova, Alexander Zolotov, Anatoliy Soroka, Pavel Zhibanov, Evgeny Bondar, Y. Krasnikov, Rodion Gorbarenko, Julia Gainulina, G. Reva
In solid malignant tumors, as well as in hematological tumors, cancer stem cells (CSCs), quiescent, pluripotent, self-renewing neoplastic, also known as tumor initiating cells, have been identified. CSC tumors are resistant not only to chemotherapy, but also to radiation therapy, as well as they play their role in the occurrence of relapses after surgical treatment, An unfavorable prognosis due to an aggressive course and complications after treatment of the most common primary brain tumor - glioblastoma multiforme (GBM), is also associated with CSC. One of the mechanisms that affect the physiological regeneration of tissues, but do not work under conditions of malignancy, is the environment and composition of the cellular tumor ensemble, represented by the phenotypes of cellular and adaptive immunity. Using immunohistochemical phenotyping methods, the authors identified immunocytes/phagocytes and established the features of their localization in the malignant tissue and at the border around the tumor. It was concluded that due to apoptosis around the tumor, intercellular signaling and migration of immunocytes/phagocytes to the focus of the tumor process are disrupted. The primary tumor process is not associated with damage to the tissue cambium genome, but with the migration of immature stem cells of the hematogenous pool, capable of proliferating and partially entering into incomplete differentiation under conditions of hypoxia and the absence of blood vessels. At the second stage, connective tissue is formed, which grows into vessels, the wall of which is represented by immature endothelium, with impaired transport function. According to the authors, metastasis of cancer cells does not occur by hematogenous and lymphogenous pathways, but is associated with the development of additional foci of hematopoiesis as a result of the adaptation of the human body to the loss of stem and semi-stem cells, precursors for normal regeneration of the nervous tissue.
在实体恶性肿瘤以及血液肿瘤中,已鉴定出癌症干细胞(CSCs)、静止的、多能的、自我更新的肿瘤细胞,也称为肿瘤起始细胞。CSC肿瘤不仅对化疗有耐药性,而且对放射治疗也有耐药性,它们在手术治疗后复发的发生中发挥着作用。由于最常见的原发性脑肿瘤-多形性胶质母细胞瘤(GBM)治疗后的病程和并发症,预后不良也与CSC有关。影响组织生理再生但在恶性肿瘤条件下不起作用的机制之一是细胞肿瘤集合的环境和组成,以细胞免疫和适应性免疫的表型为代表。利用免疫组织化学表型方法,作者鉴定了免疫细胞/吞噬细胞,并确定了它们在恶性组织和肿瘤周围边界的定位特征。结论是,由于肿瘤周围的细胞凋亡,细胞间信号传导和免疫细胞/吞噬细胞向肿瘤过程焦点的迁移被破坏。原发性肿瘤过程与组织形成层基因组的损伤无关,而是与血细胞池的未成熟干细胞的迁移有关,这些干细胞能够在缺氧和缺乏血管的条件下增殖并部分进入不完全分化。在第二阶段,结缔组织形成,生长成血管,血管壁以未成熟的内皮细胞为代表,运输功能受损。根据作者的说法,癌症细胞的转移不是通过血行和淋巴行途径发生的,而是由于人体适应干细胞和半干细胞(神经组织正常再生的前体)的丧失而导致的额外的造血病灶的发展。
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引用次数: 0
THE ROLE OF UTEROCERVICAL ANGLE IN DETERMINING THE THREAT OF PRETERM BIRTH 子宫宫颈角度在确定早产威胁中的作用
Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.817
Ufuk Atlıhan, Umit Derundere
Europäische Wissenschaftliche Gesellschaft Home About the Journal Peer Review Editorial Board For Authors Reviewer Recognition Archive Contact Impressum EWG e.V. Crossref Member Badge Erfolgreich durch internationale Zusammenarbeit OBSTETRICS DOI 10.35630/2023/13/4.817 Received 11 July 2023; Accepted 19 July 2023, Published 15 August 2023 THE ROLE OF UTEROCERVICAL ANGLE IN DETERMINING THE THREAT OF PRETERM BIRTH Ufuk Atlıhan orcid id logo , Umit Derundere orcid id logo Private Karatas Hospital, Izmir, Turkey download article (pdf) cfl.ufuk@gmail.com ABSTRACT Preterm labor is one of the leading causes of perinatal morbidity and mortality and is thought to complicate approximately 10-12% of pregnancies. Defined as birth before 37 weeks of gestation, preterm labor is one of the most common obstetric complications worldwide. Although the pathogenesis of preterm labor is not fully understood, intraamniotic infection or hemorrhage, uteroplacental ischemia, uterine overstretching and immunologic processes have been proposed in its etiology. However, there is still no definitive prediction tool. Sonographic assessment of the cervical structure by measuring cervical length (CL) has been used as a popular prediction tool to predict preterm labor. The uterocervical angle (UCA) is defined as the angle between the lower anterior uterine segment and the endocervical canal. Recently, UCA has been proposed as an alternative to CL for predicting preterm labor. In recent years, several studies have investigated the potential impact of UCA for preterm labor prediction. Our study aimed to determine whether the uterocervical angle, a new ultrasonographic marker for predicting preterm labor, is associated with the risk of spontaneous preterm delivery. The present study included 186 singleton pregnant women who gave birth in our hospital between January 2018 and December 2022. The data of the included patients were retrospectively evaluated from the hospital database and patient files. Regarding the primary outcome of our study, we found that there was a statistically significant difference in UCA and cervical length between women who delivered spontaneously preterm and women who delivered at term (p<0.05). In the second trimester ultrasonography evaluation, the mean UCA was wider and the mean cervical length was shorter in the preterm group. Contrary to other studies in the literature, smoking and history of preterm delivery as risk factors were not included in our study. The exact reasons for some of the differences between our findings and the studies reported in the literature are not clear, but may be attributed to several factors. First, the patient type was heterogeneously selected in the cited studies. There are large differences in terms of sample size and studies that may be attributed to such heterogeneity. In conclusion, wider UCA and shorter cervical length in the second trimester are associated with spontaneous preterm delivery. Measurement of UCA is a re
Europäische Wissenschaftliche Gesellschaft首页关于期刊同行评议编辑委员会作者评审认可档案联系方式:Impressum EWG e.V. Crossref成员Badge Erfolgreich durch internationale Zusammenarbeit OBSTETRICS DOI 10.35630/2023/13/4.817收到2023年7月11日;子宫-宫颈角度在确定早产威胁中的作用Ufuk Atlıhan土耳其伊兹密尔私立卡拉塔斯医院下载文章(pdf) cfl.ufuk@gmail.com摘要早产是围产期发病率和死亡率的主要原因之一,据认为约有10-12%的妊娠并发症。早产定义为妊娠37周前出生,是全世界最常见的产科并发症之一。虽然早产的发病机制尚不完全清楚,但羊膜内感染或出血、子宫胎盘缺血、子宫过伸和免疫过程已被提出其病因。然而,目前仍没有明确的预测工具。超声通过测量宫颈长度(CL)来评估宫颈结构已被用作预测早产的常用预测工具。子宫宫颈角(UCA)定义为子宫前段下部与宫颈内管之间的角度。最近,UCA被提议作为CL预测早产的替代方法。近年来,一些研究调查了UCA对早产预测的潜在影响。我们的研究旨在确定子宫宫颈角度是否与自发性早产的风险有关,子宫宫颈角度是预测早产的一种新的超声标记。本研究纳入2018年1月至2022年12月在我院分娩的186名单胎孕妇。从医院数据库和患者档案中回顾性评估纳入患者的资料。关于我们研究的主要结局,我们发现自然早产妇女和足月分娩妇女的UCA和宫颈长度有统计学意义(p<0.05)。在妊娠中期超声评估中,早产儿组平均UCA更宽,平均宫颈长度更短。与文献中的其他研究相反,吸烟和早产史并没有被纳入我们的研究。我们的发现与文献中报道的研究之间的一些差异的确切原因尚不清楚,但可能归因于几个因素。首先,在被引用的研究中,患者类型的选择存在异质性。在样本量和研究方面存在很大差异,这可能归因于这种异质性。综上所述,妊娠中期较宽的UCA和较短的宫颈长度与自发性早产有关。UCA的测量是一种可重复的技术,发现UCA值从妊娠早期到妊娠中期增加。我们建议在当前的临床实践中,除了宫颈长度测量外,还应纳入UCA作为一种预测因素,用于对有早产风险的妇女进行管理决策。然而,未来的研究需要评估该指标的诊断准确性,并应特别考虑阈值的使用和相关结果(基于特定妊娠周的早产率)。
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引用次数: 0
EVALUATION OF FETAL AND MATERNAL OUTCOMES IN MULTIPLE PREGNANCIES 多胎妊娠中胎儿和母体结局的评价
Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.816
Ufuk Atlıhan, Umit Derundere
Multiple pregnancies are an important topic of obstetrics as they are interesting and carry high risk. The increasing use of ultrasonography (USG) has made it possible to detect multiple pregnancies early. In the last 30 years, there has been a significant increase in the number of multiple pregnancies, especially in developed countries, with the increase in gestational age and the use of progressively developing assisted reproductive techniques (ART). Complications related to preterm birth and prematurity are observed with an increased frequency in these pregnancies. Therefore, multiple pregnancies constitute a process that should be monitored much more closely than singleton pregnancies due to many accompanying maternal and fetal complications. In this study, it was aimed to evaluate the maternal and fetal outcomes of multiple pregnancies with assisted reproductive techniques or spontaneous delivery in our clinic. Among all pregnant women who gave birth in our hospital between January 2018 and March 2022, 53 multiple pregnancies were included in the study. Maternal age, gestational week, delivery history, mode of delivery, birth weight and apgar scores (1st and 5th minutes) of the patients in the hospital database and file records were evaluated in terms of obstetric pathologies and perinatal outcomes. Level 1 and level 2 ultrasonography measurements and Doppler ultrasonography measurements of all patients were made by our radiology doctor in our hospital. Patient follow-ups were managed by the same gynecologist and obstetrician. There was no significant difference in the mean age of the participants according to birth weight, week of birth and mode of delivery (p>0.05). There was a significant difference in the mean age of the participants according to the presence of maternal hypertension (p<0.05). There was a statistically significant relationship between birth weight and multiple pregnancy status (p<0.05). The rate of birth weight of <1000 g and 1000-1500 g was higher in triplet pregnancies, and birth weight was found to be significantly lower than in twin pregnancies and this finding is consistent with the literature. There was a statistically significant relationship between the week of birth and multiple pregnancy status (p<0.05). The frequency of delivery between 24-28 and 28-32 weeks in triplet pregnancies was found to be significantly higher than in twin pregnancies and this finding is consistent with the literature. There was no statistically significant relationship between the presence of maternal Diabetes Mellitus (DM) and Hypertension (HT) and twin and triplet pregnancies (p>0.05). A statistically significant difference was found between twin pregnancy and triplet pregnancy in terms of both Apgar 1st Minute and Apgar 5th Minute scores (p<0.05). Both Apgar scores were higher in twin pregnancies. In a similar study, a high correlation and a statistically significant relationship was found between the 1st and 5th minute Apgar scores
多胎妊娠是产科的一个重要课题,因为它既有趣又具有高风险。超声检查(USG)的日益普及使得早期发现多胎妊娠成为可能。在过去的30年里,多胎妊娠的数量显著增加,特别是在发达国家,这是由于胎龄的增加和使用逐步发展的辅助生殖技术(ART)。与早产和早产有关的并发症在这些妊娠中观察到的频率增加。因此,由于许多伴随的母体和胎儿并发症,多胎妊娠构成了一个比单胎妊娠更密切监测的过程。在本研究中,目的是评估多胎妊娠的母胎结局辅助生殖技术或自然分娩在我们的诊所。2018年1月至2022年3月在我院分娩的孕妇中,53例多胎妊娠纳入研究。对医院数据库和档案记录中患者的产妇年龄、孕周、分娩史、分娩方式、出生体重和apgar评分(第1分钟和第5分钟)进行产科病理和围产期结局评估。所有患者的1级、2级超声测量及多普勒超声测量均由我院放射科医生完成。患者随访由同一名妇产科医生管理。根据出生体重、出生周数和分娩方式,参与者的平均年龄无显著差异(p>0.05)。根据产妇高血压的存在,参与者的平均年龄有显著差异(p<0.05)。出生体重与多胎妊娠状态有统计学意义(p < 0.05)。三胞胎妊娠1000 g和1000-1500 g的出生体重率较高,并且发现出生体重明显低于双胎妊娠,这一发现与文献一致。出生周数与多胎妊娠状态有统计学意义(p < 0.05)。在24-28周和28-32周之间,三胞胎妊娠的分娩频率明显高于双胎妊娠,这一发现与文献一致。产妇是否患有糖尿病(DM)和高血压(HT)与双胎和三胞胎妊娠无统计学意义(p < 0.05)。双胎妊娠与三胞胎妊娠Apgar第1分钟和第5分钟评分差异有统计学意义(p < 0.05)。双胎妊娠的阿普加评分更高。在一项类似的研究中,发现第1分钟和第5分钟的阿普加评分与出生周之间存在高度相关和统计上显著的关系。多胎妊娠围产儿发病率的最决定性因素之一是绒毛膜性。围产期结局特别与出生周数和绒毛膜性有关。我们研究的最大限制是在我们的档案记录信息中缺乏对时间性的超声评估。因此,本研究无法评估新生儿结局与绒毛膜性之间的关系,这被认为是本研究的局限性。
{"title":"EVALUATION OF FETAL AND MATERNAL OUTCOMES IN MULTIPLE PREGNANCIES","authors":"Ufuk Atlıhan, Umit Derundere","doi":"10.35630/2023/13/4.816","DOIUrl":"https://doi.org/10.35630/2023/13/4.816","url":null,"abstract":"Multiple pregnancies are an important topic of obstetrics as they are interesting and carry high risk. The increasing use of ultrasonography (USG) has made it possible to detect multiple pregnancies early. In the last 30 years, there has been a significant increase in the number of multiple pregnancies, especially in developed countries, with the increase in gestational age and the use of progressively developing assisted reproductive techniques (ART). Complications related to preterm birth and prematurity are observed with an increased frequency in these pregnancies. Therefore, multiple pregnancies constitute a process that should be monitored much more closely than singleton pregnancies due to many accompanying maternal and fetal complications. In this study, it was aimed to evaluate the maternal and fetal outcomes of multiple pregnancies with assisted reproductive techniques or spontaneous delivery in our clinic. Among all pregnant women who gave birth in our hospital between January 2018 and March 2022, 53 multiple pregnancies were included in the study. Maternal age, gestational week, delivery history, mode of delivery, birth weight and apgar scores (1st and 5th minutes) of the patients in the hospital database and file records were evaluated in terms of obstetric pathologies and perinatal outcomes. Level 1 and level 2 ultrasonography measurements and Doppler ultrasonography measurements of all patients were made by our radiology doctor in our hospital. Patient follow-ups were managed by the same gynecologist and obstetrician. There was no significant difference in the mean age of the participants according to birth weight, week of birth and mode of delivery (p&gt;0.05). There was a significant difference in the mean age of the participants according to the presence of maternal hypertension (p&lt;0.05). There was a statistically significant relationship between birth weight and multiple pregnancy status (p&lt;0.05). The rate of birth weight of &lt;1000 g and 1000-1500 g was higher in triplet pregnancies, and birth weight was found to be significantly lower than in twin pregnancies and this finding is consistent with the literature. There was a statistically significant relationship between the week of birth and multiple pregnancy status (p&lt;0.05). The frequency of delivery between 24-28 and 28-32 weeks in triplet pregnancies was found to be significantly higher than in twin pregnancies and this finding is consistent with the literature. There was no statistically significant relationship between the presence of maternal Diabetes Mellitus (DM) and Hypertension (HT) and twin and triplet pregnancies (p&gt;0.05). A statistically significant difference was found between twin pregnancy and triplet pregnancy in terms of both Apgar 1st Minute and Apgar 5th Minute scores (p&lt;0.05). Both Apgar scores were higher in twin pregnancies. In a similar study, a high correlation and a statistically significant relationship was found between the 1st and 5th minute Apgar scores","PeriodicalId":51770,"journal":{"name":"Archiv EuroMedica","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619649","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}
引用次数: 0
A RARE CAUSE OF RADICULOPATHY: FEMORAL HEAD AVASCULAR NECROSIS 一种罕见的神经根病的病因:股骨头缺血性坏死
Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.815
Ozgur Aksan, Mehmer Secer
Insufficient blood flow to the proximal femur causes osteonecrosis of the femoral head, which is known as femoral head avascular necrosis (AVN). The underlying pathogenesis is unclear, risk factors are likely to influence microcirculation somewhat, but this has not been confirmed by research. In more than 75% of cases, avascular necrosis affects the femoral head. Methods: From August 2019 to March 2022, 4 patients with FBAN were analyzed retrospectively. The findings seen in the hip MRI radiographs of the patients were reported radiologically as FBAN. It was staged with the Ficat and Arlet classifications. Visual analog scale (VAS) was used in the current clinics of the patients. Results: Patients with severe back, hip, and leg pain whose clinic and radiology do not match with lumbar pathology should plan a hip MRI. Because of this, it may be misleading for people with severe radiculopathy, and this radiculopathy may not even be real. The pain is really coming from the hip, but it is often felt in the lumbosacral region and the buttocks. This makes it easy to make the wrong diagnosis.
股骨近端供血不足导致股骨头坏死,称为股骨头缺血性坏死(AVN)。其发病机制尚不清楚,危险因素可能对微循环有一定影响,但尚未得到研究证实。在超过75%的病例中,股骨头会发生缺血性坏死。方法:回顾性分析2019年8月至2022年3月4例FBAN患者的临床资料。在患者的髋关节MRI x线片上发现的结果在放射学上被报告为FBAN。它是用Ficat和Arlet分类编排的。采用视觉模拟量表(Visual analogue scale, VAS)对患者进行临床评估。结果:临床和放射学与腰椎病理不相符的严重背部、髋关节和腿部疼痛患者应计划进行髋关节MRI检查。正因为如此,它可能会误导患有严重神经根病的人,这种神经根病甚至可能不是真的。疼痛实际上来自臀部,但通常在腰骶区和臀部感到疼痛。这就很容易做出错误的诊断。
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引用次数: 0
THE ISSUE OF ADVERSE EFFECTS IN CASE OF VITRO FERTILIZATION 体外受精的不良反应问题
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.805
R. Kalinin, E. Barinov, Sergey Dzhuvalyakov, O. Romanova
The article deals with the issues of regulation of practical activities related to the use of assisted reproductive technologies (ART). Currently, disputes about the quality and the results of in vitro fertilization, surrogacy and the use of other methods of infertility treatment are considered to be mainly in the realm of civil litigation. However, even the most high-tech medical devices are associated with a certain degree of risk to life and health. Cases of fatal outcomes among mothers or babies after the use of ART lead to the initiation of criminal cases against healthcare providers. At the same time, the forensic methodology of investigating such cases requires a commission forensic medical examination, the results of which become the major stumbling block at all stages of criminal proceedings. There are challenges in the organization and methodological support of the work of the investigation, the prosecutor's office and the courts. Especially, when several experts with opposite views clash in court over a case, where they completely or partially refute each other. In our paper we highlight an example of such a case to improve legislation and judicial practice in this area.
这篇文章讨论了与使用辅助生殖技术(ART)有关的实际活动的监管问题。目前,关于体外受精、代孕和其他不孕症治疗方法的质量和结果的争议被认为主要是在民事诉讼领域。然而,即使是最高科技的医疗设备也会给生命和健康带来一定程度的风险。使用抗逆转录病毒治疗后母亲或婴儿死亡的病例导致对卫生保健提供者提起刑事诉讼。同时,调查这类案件的法医方法要求委员会进行法医检查,其结果成为刑事诉讼所有阶段的主要障碍。在调查工作、检察官办公室和法院的组织和方法支持方面存在挑战。特别是当几个持相反观点的专家在法庭上就一个案件发生冲突时,他们完全或部分地反驳对方。在本文中,我们着重列举了一个这样的案例,以完善这一领域的立法和司法实践。
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引用次数: 0
HEMODYNAMIC CHANGES IN NICKEL INTOXICATION AND THEIR EXPERIMENTAL CORRECTION WITH ORGANIC SELENIUM AND SMALL DOSES OF ZINC 镍中毒的血流动力学变化及其用有机硒和小剂量锌的实验校正
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.810
David Oganesyan, V. Brin, O. Kabisov
The purpose of the study is to investigate the effect of organic selenium and low doses of zinc on nickel intoxication. Selenium and zinc were administered once daily at a dose of 4 and 1 mg/ kg. Nickel chloride (5 mg/kg) was administered intragastrically using a probe, daily for one month. At the end of the experiment time (30 days), the main parameters of systemic hemodynamics were determined. The arterial blood pressure from the femoral artery was measured and the mean (MAP) was calculated. Cardiac output was determined by thermal dilution, heart rate (HR) was recorded; cardiac index, shock index and specific peripheral vascular resistance were calculated using special formulas. Our findings showed that nickel leads to significant disruptions in hemodynamics and heart function of rats, manifested in an increase in MAP, a change in heart rate, a decrease in systolic output. The introduction of selenium or small doses of zinc in rats exposed to nickel, produced a noticeable decrease in the cardiotoxic effects of this metal. There was also a decrease in the hypertensive effect of the metal. Thus, it has been established that antioxidants selenium and zinc can effectively reduce nickel toxicity.
本研究的目的是探讨有机硒和低剂量锌对镍中毒的影响。硒和锌每天1次,剂量分别为4和1 mg/ kg。用探针灌胃氯化镍(5mg /kg),每天1个月。实验时间(30 d)结束时,测定全身血流动力学主要参数。测量股动脉动脉血压,计算平均值(MAP)。热稀释法测定心输出量,记录心率(HR);采用专用公式计算心脏指数、休克指数和特定外周血管阻力。我们的研究结果表明,镍会导致大鼠血流动力学和心功能的明显破坏,表现为MAP增加,心率改变,收缩输出量降低。在暴露于镍的大鼠中引入硒或小剂量锌,可显著减少这种金属的心脏毒性作用。金属对高血压的影响也有所降低。因此,抗氧化剂硒和锌可以有效地降低镍的毒性。
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引用次数: 0
HYPERGLYCEMIA AND COVID-19 – TWO SIDES OF ONE COIN 高血糖症与新冠肺炎——一个货币的两面
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.801
V. Tsvetkova, K. Todorova
The coronavirus pandemic, which has spread with monstrous rapidity, placed a huge "burden" on humanity. In the attempt to deal with the disease many efforts were directed in the course of unraveling the pathogenetic mechanisms contributing to its adverse complications. The increased frequency of new-onset hyperglycemia during COVID-19 illness gave reason to assume that the SARS-CoV-2 virus could damage the insulin-producing pancreatic beta (β) cells. This fact set a new a focus of research interest related to studying potential mechanisms, leading to hyperglycemia or diabetes mellitus (DM). Literature data indicate that Corona viruses can damage pancreatic β-cells by a direct or indirect mechanism and cause changes in insulin synthesis, secretion and sensitivity. Assessment of the metabolic status of pancreatic β-cells infected with the SARS-CoV-2 virus showed a predominance of the glycolytic metabolic pathway, which further contributed to the worsening of β-cell dysfunction. All these observations give reason to assume that SARS-CoV-2 induces specific morphological and functional changes in pancreatic β-cells, which in long term, would have an impact on the metabolic homeostasis of the individual with a potential risk of future development of DM. In this review, the possible mechanisms of pancreatic β-cell damage are discussed in details, searching the answer to the question of whether SARS-CoV-2 can cause diabetes.
新冠病毒疫情以惊人的速度传播,给人类带来了巨大的“负担”。在试图处理这种疾病的过程中,许多努力都集中在揭示导致其不良并发症的发病机制上。新冠肺炎疾病期间新发高血糖的频率增加,有理由认为SARS-CoV-2病毒会损害产生胰岛素的胰腺β细胞。这一事实为研究导致高血糖或糖尿病(DM)的潜在机制开辟了一个新的研究热点。文献数据表明,冠状病毒可以通过直接或间接的机制损伤胰腺β细胞,并导致胰岛素合成、分泌和敏感性的变化。对感染严重急性呼吸系统综合征冠状病毒2型病毒的胰腺β细胞代谢状态的评估显示,糖酵解代谢途径占主导地位,这进一步导致β细胞功能障碍的恶化。所有这些观察结果都有理由假设,严重急性呼吸系统综合征冠状病毒2型诱导胰腺β细胞的特定形态和功能变化,从长远来看,这将对个体的代谢稳态产生影响,并有可能在未来发展为糖尿病。在这篇综述中,详细讨论了胰腺β细胞损伤的可能机制,寻找严重急性呼吸系统综合征冠状病毒2型是否会导致糖尿病的答案。
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引用次数: 0
ALLERGIC CONTACT DERMATITIS: ETIOLOGICAL MATRIX 过敏性接触性皮炎:病因基质
Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.819
Liudmyla Konovalenko, Oleksandr Litus, Viktor Litus
The article discusses the main links of the pathogenesis of allergic contact dermatitis and gives the results of patch testing in patients who were examined to determine the etiological factors of the disease. Screening showed that nickel, cobalt, methylisothiazolinone, phenylenediamine, formaldehydes and fragrances are the most common etiological factors of ACD. Named haptens cause the absolute majority of positive reactions in the selected group of patients, and also cause the largest number of reactions of pronounced intensity. Patch testing is an informative and useful method for a balanced planning in ACD patients treatment strategy, because it reveals the etiological matrix of the pathological process occurrence in the skin.
本文讨论了过敏性接触性皮炎发病的主要环节,并给出了对患者进行斑贴试验的结果,以确定疾病的病因。筛选结果显示,镍、钴、甲基异噻唑啉酮、苯二胺、甲醛和芳香剂是ACD最常见的病因。在所选患者组中,命名半抗原引起的阳性反应占绝对多数,并且引起的明显强度的反应也最多。斑贴试验对于平衡规划ACD患者的治疗策略是一种信息丰富且有用的方法,因为它揭示了皮肤病理过程发生的病因基质。
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引用次数: 0
HISTOPATHOLOGICAL CHANGES IN THE NUCLEUS AND CONTRACTILE APPARATUS OF CARDIOMYOCYTES IN OVERT ACQUIRED PRIMARY HYPOTHYROIDISM: EXPERIMENTAL STUDY 显性获得性原发性甲状腺功能减退症心肌细胞核和收缩器组织病理学变化的实验研究
IF 0.6 Pub Date : 2023-08-23 DOI: 10.35630/2023/13/4.807
A. Chaulin, J. Grigoryeva, E. Smirnova, G. Suvorova, D. Duplyakov, V. Vankov
Hypothyroidism causes a number of histological changes in almost all tissues and cells of the body of a mammal, which is accompanied by numerous clinical and functional disorders. This is due to the multifaceted and multifunctional role of thyroid hormones (thyroxine and triiodothyronine) in the body of mammals. Striated cardiac muscle tissue and its main structural unit (contractile cardiomyocyte) is one of the most frequently involved tissues in the histopathological process in hypothyroidism. In addition, hypothyroidism can be considered as one of the main risk factors for the development of cardiovascular diseases (heart failure, coronary heart disease, cardiac arrhythmias), so the study of histopathological changes in cardiac muscle tissue is of great theoretical and practical importance. To date, there are no studies evaluating histopathological ultrastructural changes in contractile cardiomyocytes in certain forms of hypothyroidism, in particular in overt acquired primary hypothyroidism. The purpose of this study is to investigate the histopathological changes in the nucleus and contractile apparatus of cardiomyocytes in the conditions of experimental modeling of overt acquired primary hypothyroidism. Materials and Methods: male Chinchilla rabbits aged 12-14 months and weighing 3.1-3.5 kg (n=10), were divided into 2 equal groups. 1) The experimental group (n=5), where overt primary hypothyroidism was induced by oral administration of the antithyroid drug thiamazole (10 mg/kg for 4 weeks). 2) The animals of the control group (n=5) received placebo and were in a state of normothyroidism. Transmission electron microscopy (TEM) was used to study ultrastructural changes in contractile cardiomyocytes. Results and Conclusion: Based on the results of electron microscopic study, we detected numerous ultrastructural changes in the nucleus and contractile apparatus of cardiomyocytes: the nucleus (wrinkling, uneven contours of the nucleus and emergence of karyolemma invaginations, chromatin condensation); in the contractile apparatus (thinning of myofibrils, emergence of areas of myofibrils overcontraction with contractures). These ultrastructural changes in cardiomyocytes underlie the disruption of myocardial contractility, as well as an increase in dystrophic and apoptotic changes with the gradual development of heart failure, which is a frequent companion of untreated overt acquired primary hypothyroidism.
甲状腺功能减退会导致哺乳动物身体几乎所有组织和细胞发生许多组织学变化,并伴有许多临床和功能紊乱。这是由于甲状腺激素(甲状腺素和三碘甲状腺原氨酸)在哺乳动物体内具有多方面和多功能的作用。条纹状心肌组织及其主要结构单元(收缩性心肌细胞)是甲状腺功能减退症组织病理过程中最常涉及的组织之一。此外,甲状腺功能减退可被认为是心血管疾病(心力衰竭、冠心病、心律失常)发展的主要危险因素之一,因此研究心肌组织的组织病理学变化具有重要的理论和实践意义。到目前为止,还没有研究评估某些形式的甲状腺功能减退症,特别是显性获得性原发性甲状腺功能减退的收缩性心肌细胞的组织病理学超微结构变化。本研究的目的是研究在显性获得性原发性甲状腺功能减退的实验建模条件下,心肌细胞细胞核和收缩器的组织病理学变化。材料与方法:雄性龙猫兔,年龄12~14个月,体重3.1~3.5kg(n=10),随机分为2组。1) 实验组(n=5),通过口服抗甲状腺药物噻唑(10mg/kg,持续4周)诱导明显的原发性甲状腺功能减退。2) 对照组的动物(n=5)接受安慰剂治疗,并且处于甲状腺功能正常的状态。用透射电子显微镜(TEM)研究心肌细胞的超微结构变化。结果与结论:根据电镜研究结果,我们在心肌细胞的细胞核和收缩器中检测到许多超微结构变化:细胞核(褶皱、细胞核轮廓不均匀和出现核膜内陷、染色质浓缩);在收缩器中(肌原纤维变薄,肌原纤维过度牵拉区域出现挛缩)。心肌细胞的这些超微结构变化是心肌收缩性破坏的基础,也是随着心力衰竭的逐渐发展,营养不良和细胞凋亡变化增加的基础,心力衰竭是未经治疗的显性获得性原发性甲状腺功能减退的常见伴发物。
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引用次数: 0
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