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Analysis of an Epidemiological Anomaly of COVID-19: Transcultural and Immunological Psychiatry 一起COVID-19流行病学异常分析:跨文化和免疫精神病学
Pub Date : 2021-02-10 DOI: 10.31487/J.CMR.2021.01.01
J. Pandarakalam
Evidence exists for an epidemiological trend of transmission concentrations of COVID-19 within migrantcommunities from tropical weather conditions. Minority groups are over-represented in hospitalisations anddeaths from the virus, and it appears that the observed anomaly may be due to multifactorial causes.Underactive immune responses in cooler temperatures and diminished synthesis of vitamin D, both of whichare associated with genetic factors among ethnic minority groups, could help to explain the higher incidenceof COVID-19 among ethnic minority communities. Neither factor is specific to a migrant community butcommon to general populations. The overstatement of contributory genetic factors runs the risk of racialstigmatisation. If environmental factors are given their due importance, individuals belonging to ethnicminorities may try to adopt new ways to combat the pandemic, while overemphasising racial factors wouldonly leave them helpless. The renewed interest of psychiatrists in immunology would support the emergingfield of immunopsychiatry. COVID-19 is environmentally sensitive, and all medical specialities, includingthe mental health profession, should contribute their wisdom to defeating or making a truce with the viralphenomenon.
有证据表明,在热带天气条件下,COVID-19在移民社区中存在传播集中的流行病学趋势。在因该病毒住院和死亡的人群中,少数群体的比例过高,似乎观察到的异常现象可能是由多因素原因造成的。温度较低时免疫反应不活跃,维生素D合成减少,这两者都与少数民族群体的遗传因素有关,这可能有助于解释少数民族社区中COVID-19发病率较高的原因。这两种因素都不是移民社区所特有的,而是一般人群所共有的。对致病基因因素的夸大会带来种族歧视的风险。如果环境因素得到应有的重视,属于少数民族的个人可能会尝试采取新的方法来防治这一流行病,而过分强调种族因素只会使他们无助。精神科医生对免疫学重新产生的兴趣将支持免疫精神病学这一新兴领域。COVID-19对环境敏感,所有医学专业,包括精神卫生专业,都应该为战胜这种病毒现象或与之休战贡献自己的智慧。
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引用次数: 0
Elevated Level of Serum Vitamin D Reduce the Chance of Latent Genital Tuberculosis 血清维生素D水平升高可减少潜伏性生殖器结核病的机会
Pub Date : 2020-01-22 DOI: 10.31487/j.cmr.2019.01.05
Abira Datta, B. Bhattacharya, R. Chowdhury, S. Chatterjee, S. Chowdhury
Aim: To explore the possibility of risk factor between latent genital tuberculosis with association of lowsecretion anti-mullerian hormone(AMH) and low level of Vitamin D for infertility.Design: Retrospective study was done in the reproductive medicine unit of Calcutta Fertility Mission,Kolkata-700019, and IndiaResult: From January 2017 to January 2019, total 150 Subjects (n= 75 TB-PCR positive and n=75 TB-PCRnegative cases as control) were included in this study on the basis of inclusion and exclusion criteria. Wehave found that mean value of AMH and Vitamin D were higher in PCR negative group than positive group.Various level of AMH and Vitamin D concentration for PCR positive and negative cases were statisticallysignificant (p-value < 0.01).Conclusion: Our finding is that vitamin D deficiency is highly prevalent not only in active tuberculosis butalso in latent genital tuberculosis subjects and serum Vitamin D level may help in treatment of latent genitaltuberculosis. Elevated level of Vitamin D in serum may rule out latent tuberculosis.
目的:探讨潜伏性生殖器结核与低分泌抗苗勒管激素(AMH)和低水平维生素D相关的不育危险因素的可能性。设计:回顾性研究在加尔各答-700019和印度加尔各答生育中心生殖医学单元进行。结果:2017年1月至2019年1月,根据纳入和排除标准,共纳入150名受试者(n= 75例TB-PCR阳性和n=75例TB-PCR阴性作为对照)。我们发现PCR阴性组AMH和维生素D的平均值高于阳性组。不同水平AMH和维生素D浓度在PCR阳性和阴性病例中差异均有统计学意义(p值< 0.01)。结论:维生素D缺乏症不仅在活动性肺结核患者中普遍存在,而且在潜伏性生殖器肺结核患者中也普遍存在,血清维生素D水平可能有助于潜伏性生殖器肺结核的治疗。血清中维生素D水平升高可排除潜伏性肺结核。
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引用次数: 0
Anti-Microbial and Anti-Cancer Properties of Tat-IV13, A Hybrid Bi-Partite Peptide Containing The Short Non Active Iv13 Sequence of Human Ll37 Cathelecidin 含有人Ll37 Cathelecidin短段非活性Iv13序列的杂联肽Tat-IV13的抑菌和抗癌特性
Pub Date : 2019-12-05 DOI: 10.31487/j.cmr.2019.01.03
Alphonse Garcia, B. Périchon
Therapeutic strategies based on optimization of the unique human LL37 cathelecin sequences including FK16, the core active sequence of LL37, have already been proposed. In this study we have characterized TatIV13 a new host defense hybrid peptide, that combined YGRRKKRRQRRR, the hydrophobic N-terminalfragment of HIV-1 Tat47-57 cell penetrating sequence, with IV13, a short IVQRIKDFLRNLV inactivesequence resulting from the deletion of the three N-terminal amino acid residues of FK16. Tat- IV13displayed potent host defense inhibitory effects leading both to the survival inhibition of U87G cells, aglioblastoma model, and to the inhibition of the growth of S. agalactiae NEM316 ΔdltA strain, a Gram+bacterial model. These results suggest that identification of hybrid specific Tat-cathelecidin peptides withhigh anti-tumor activity and anti-bactericidal activity may represent a powerful approach to identify newcandidates for future therapeutic developments.
已经提出了基于优化人类独特的LL37 cathelecin序列(包括LL37的核心活性序列FK16)的治疗策略。在这项研究中,我们鉴定了一种新的宿主防御杂交肽TatIV13,它将HIV-1 Tat47-57细胞穿透序列的疏水n端片段YGRRKKRRQRRR与IV13结合在一起,IV13是由FK16的三个n端氨基酸残基缺失导致的IVQRIKDFLRNLV短失活序列。Tat- iv13表现出强大的宿主防御抑制作用,既抑制了胶质母细胞瘤模型U87G细胞的存活,又抑制了革兰氏+细菌模型S. agalactiae NEM316 ΔdltA菌株的生长。这些结果表明,鉴定具有高抗肿瘤活性和抗菌活性的杂合特异性Tat-cathelecidin肽可能是鉴定未来治疗发展的新候选药物的有力途径。
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引用次数: 0
Predisposing Factors to HBV Among Pregnant Women Attending Some Hospitals in Suburbs of Kano, Nigeria 在尼日利亚卡诺郊区一些医院就诊的孕妇感染HBV的易感因素
Pub Date : 2019-11-20 DOI: 10.31487/j.cmr.2019.01.02
O. A. Abulude, Farouk Umar Sadisu, Ismai’la Ahmed
Hepatitis B virus (HBV) when transmitted vertically can be severe on neonates and life threatening. Amongothers, risk factors for HBV include unprotected sex, needle-stick injuries and blood transfusion. The studywas conducted to determine the seroprevalence of HBV markers and associated risk factors among onehundred and sixty consenting pregnant women attending some hospitals in Kano, Nigeria. Using enzymelinked immunoassay, sera were screened for HBV sero-markers and structured questionnaires wereadministered to obtain sociodemographic data and possible predisposing factors to HBV infection. Of thefive HBV markers known, participants tested positive for four, which include HBsAg, HBsAb, HBeAb andHBcAb. All were seronegative for HBeAg. Ninety three percent (93.1%) tested positive for at least oneHBV marker and 6.9% were seronegative for all markers. Among those that tested positive for HBsAg,54.5% (p=0.33) were housewives, 36.4% (p=0.53) had only primary school education, 72.7% (p=0.14) weremiddle-class, none had previous knowledge of HBV infection and its mode of transmission, 54.5% (p=0.14)regularly shares sharp objects, 45.5% (p=0.37) had ear or nose piercing, and 9.1% (p=0.01) regularly sharestowel and underwear. A large percentage of the study group had history of the infection while only 1.3% ofthe subjects were vaccinated. Sociodemographic background of the participants, low vaccination coverageand certain risk factors like the sharing of unsterilized sharp objects seem to aid the moderately highprevalence of HBV in this study. The study also revealed that the risk of mother-to-child HBV transmissionis low in the study area and that incomplete vaccination may not confer artificial immunity against HBVinfection.
乙型肝炎病毒(HBV)在垂直传播时可对新生儿造成严重威胁并危及生命。感染乙肝病毒的危险因素包括无保护的性行为、针刺伤和输血。该研究旨在确定在尼日利亚卡诺一些医院就诊的160名自愿孕妇中HBV标志物的血清阳性率和相关危险因素。使用酶联免疫分析法,筛选血清中HBV血清标记物,并进行结构化问卷调查,以获得社会人口学数据和可能的HBV感染易感因素。在已知的五种HBV标志物中,参与者检测出四种阳性,包括HBsAg、HBsAb、HBeAb和hbcab。HBeAg血清检测均为阴性。93%(93.1%)的患者至少一种hbv标记物检测呈阳性,6.9%的患者所有标记物血清检测均为阴性。在HBsAg阳性者中,54.5% (p=0.33)为家庭主妇,36.4% (p=0.53)为小学学历,72.7% (p=0.14)为中产阶级,对HBV感染及其传播方式一无所知,54.5% (p=0.14)经常共用尖锐物品,45.5% (p=0.37)有耳鼻穿刺,9.1% (p=0.01)经常共用袜子和内衣。很大比例的研究组有感染史,而只有1.3%的受试者接种了疫苗。参与者的社会人口学背景、低疫苗覆盖率和某些危险因素,如共用未消毒的尖锐物品,似乎有助于本研究中HBV的中度高患病率。该研究还表明,在研究地区,母婴传播HBV的风险很低,不完全的疫苗接种可能无法获得针对HBV感染的人工免疫。
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引用次数: 0
Antibacterial Activity of Extracts of Coprinopsis Cinerea, A Coprophilous Fungus Against Multidrug Resistant Nosocomial Pathogens 铜芽孢菌提取物对多重耐药医院病原菌的抑菌活性研究
Pub Date : 2019-09-03 DOI: 10.31487/j.cmr.2019.01.01
J. Savitha, S. Mohankumar
Our study explored Coprinopsis cinerea (C2), a coprophilous basidiomycetous fungus isolated from horse dung to combat beta-lactamase and carbapenamase producing multidrug resistant nosocomial pathogens in vitro. The isolated strain was cultivated under sub-merged fermentation (SmF) and solid-state fermentation (SSF) for 10 days at 30°C and at pH 6 in dark. After the growth period, the extracellular metabolites were extracted using polar and non-polar solvents and the extracts were subjected for antibacterial activity by agar well diffusion, microbroth dilution and time-kill kinetics assay. The methanolic extract of fruit bodies and mycelial biomass of C. cinerea (C2) grown under wheat flour agar and wheat flour broth respectively, showed significant antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) and carbapenamase producing Klebsiella pneumoniae with a zone of inhibition ranging between 10 and 14 mm in diameter. On the contrary, ethyl acetate seems to be the effective solvent for extraction of antimicrobial compounds from culture filtrate of Smf and SSF grown C. cinerea (C2). Among the solid substrates (agrowaste materials), wheat bran supported maximum growth and antimicrobial metabolite production with a significant zone of inhibition ranging between 20 and 22 mm. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ethyl acetate extract of C. cinerea (C2) culture filtrate was 3.12-12.5 mg/mL and 6.25-25 mg/mL, respectively. The time-kill kinetics assay showed the extracted metabolites of culture filtrate was bactericidal in nature.
我们的研究探索了从马粪中分离出来的一种嗜粪担子菌,它能在体外对抗产生多重耐药的β -内酰胺酶和碳青霉烯酶的医院病原菌。分离菌株在30°C、pH 6的黑暗条件下,在水下发酵(SmF)和固态发酵(SSF)下培养10天。生长期后,分别用极性溶剂和非极性溶剂提取细胞外代谢物,并通过琼脂孔扩散、微肉汤稀释和时效动力学试验对提取物进行抑菌活性测定。在小麦粉琼脂和小麦粉肉汤中培养的C. cinerea (C2)果体甲醇提取物和菌丝生物量对耐甲氧西林金黄色葡萄球菌(MRSA)和产碳青霉烯酶肺炎克雷伯菌(Klebsiella pneumoniae)具有显著的抑菌活性,抑菌区直径在10 ~ 14 mm之间。相反,乙酸乙酯似乎是从Smf和SSF培养的cinerea (C2)的培养滤液中提取抗菌化合物的有效溶剂。在固体底物(农业废弃物)中,麦麸支持最大生长和抗菌代谢物的产生,显著抑制区在20 ~ 22 mm之间。cinerea (C2)培养滤液乙酸乙酯提取物的最低抑菌浓度(MIC)为3.12 ~ 12.5 mg/mL,最低杀菌浓度(MBC)为6.25 ~ 25 mg/mL。时间杀伤动力学试验表明,提取的培养滤液代谢物具有杀菌作用。
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引用次数: 0
ABO, H, Lewis and Secretor histo-blood group-like carbohydrates in pathogenic and non-pathogenic invertebrates 致病性和非致病性无脊椎动物的ABO、H、Lewis和分泌组织血型样碳水化合物
Pub Date : 2019-08-08 DOI: 10.31487/j.cmr.2018.01.08
C. C. B. Mattos, L. C. Mattos, M. P. Miola
ABO, H, Lewis, and Secretor histo-blood group systems express a repertoire of carbohydrate antigens in human hematopoietic and non-hematopoietic tissues. The oligosaccharide components of these systems are widely distributed in nature, including animal and plants. A set of reports demonstrated that pathogenic and non-pathogenic invertebrates are able to synthesize and or acquire histo-blood group-like carbohydrates from hosts. These abilities seem to be related to strategies for cell invasion as well as scape from host’s innate and adaptive immune responses. This text revised the literature and offers a tentative explanation for the presence of histo-blood group-like carbohydrates in pathogenic and non-pathogenic invertebrates and its importance in terms of evolution.
ABO、H、Lewis和分泌组织血型系统在人类造血和非造血组织中表达一系列碳水化合物抗原。这些系统的低聚糖成分广泛分布于自然界,包括动物和植物。一组报告表明,致病性和非致病性无脊椎动物能够从宿主合成或获得组织血型样碳水化合物。这些能力似乎与细胞入侵策略以及逃离宿主的先天和适应性免疫反应有关。本文对文献进行了修订,并对致病性和非致病性无脊椎动物中存在组织血型样碳水化合物及其在进化中的重要性提供了初步解释。
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引用次数: 1
p53 Binding Loci Database (p53BLD): a repository for the genome-wide binding loci of human TP53 p53结合位点数据库(p53 Binding Loci Database, p53BLD):人类TP53全基因组结合位点库
Pub Date : 2019-07-19 DOI: 10.31487/J.CMR.2018.01.01
Jer-Wei Chang, H. Liaw, Wei-Sheng Wu, Yu-Han Chu, Yu-Xuan Jiang
Background Recent advances in ChIP-seq technologies have led to the identification of thousands of TP53 binding loci in various cell types, providing unmatched opportunities for analysis and comparison of the TP53 genome-wide binding patterns under different experimental conditions. These ChIP-seq datasets provide valuable resources for studying the function of TP53. However, there are currently no databases available for easily comparing and analyzing TP53 genome-wide binding patterns derived from different cell lines. Moreover, the TP53 ChIP-seq datasets are scattered among different papers, so extensive work is required to collect and process them for further analysis. Description To solve these problems, we comprehensively collected 13 publicly available TP53 ChIP-seq datasets derived from various cell lines. We re-mapped these 13 ChIP-seq datasets to the most updated reference human genome hg38 and identified the binding peaks (regions with significant enrichment of TP53 binding) and the target genes of TP53 in the human genome using the same data processing pipeline. Note that processing these 13 ChIP-seq datasets using the same pipeline is very crucial because it makes comparing the identified peaks and target genes of TP53 from different datasets possible. Finally, we developed a web-based platform (called the p53BLD), which provides a browse mode to visualize the binding loci of TP53 in the genome and a search mode to retrieve genes whose promoters are bound by TP53. The search mode is very powerful. Users can apply union, intersect, and/or difference operations on the 13 ChIP-seq datasets to generate a list of TP53 binding target genes that satisfies the users’ specifications. The generated gene list can then be downloaded for further analysis. Therefore, the p53BLD can also be regarded as a discovery tool that helps users to generate interesting gene lists for studying TP53.Conclusions Here we presented the first p53 Binding Loci Database (p53BLD). In the case study, we showed that using p53BLD can identify novel TP53 binding targets (KAT6A and KMT2A) in specific cancer cell lines. We believe that p53BLD is a useful resource for studying the function of TP53 in different cancer cell lines. P53BLD is available online at link1/, link2/, or link3/
ChIP-seq技术的最新进展已经导致在各种细胞类型中鉴定了数千个TP53结合位点,为在不同实验条件下分析和比较TP53全基因组结合模式提供了无与伦比的机会。这些ChIP-seq数据集为研究TP53的功能提供了宝贵的资源。然而,目前还没有数据库可以方便地比较和分析来自不同细胞系的TP53全基因组结合模式。此外,TP53 ChIP-seq数据集分散在不同的论文中,因此需要大量的工作来收集和处理它们以进行进一步的分析。为了解决这些问题,我们全面收集了来自不同细胞系的13个公开可用的TP53 ChIP-seq数据集。我们将这13个ChIP-seq数据集重新映射到最新的参考人类基因组hg38,并使用相同的数据处理管道确定了人类基因组中TP53的结合峰(TP53结合显著富集的区域)和TP53的靶基因。请注意,使用相同的管道处理这13个ChIP-seq数据集非常重要,因为它可以比较来自不同数据集的TP53鉴定峰和靶基因。最后,我们开发了一个基于web的平台(称为p53BLD),该平台提供了浏览模式来可视化基因组中TP53的结合位点,并提供了搜索模式来检索启动子与TP53结合的基因。搜索模式非常强大。用户可以对13个ChIP-seq数据集进行union、intersect和/或difference操作,生成满足用户要求的TP53结合靶基因列表。生成的基因列表可以下载以作进一步分析。因此,p53BLD也可以被视为一个发现工具,帮助用户生成有趣的基因列表来研究TP53。我们建立了首个p53结合位点数据库(p53BLD)。在案例研究中,我们发现使用p53BLD可以在特定的癌细胞系中识别新的TP53结合靶点(KAT6A和KMT2A)。我们认为p53BLD是研究TP53在不同癌细胞系中功能的有用资源。P53BLD可在link1/, link2/或link3/上在线获得
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引用次数: 1
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Clinical Microbiology and Research
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