RvD1 treatment during primary infection modulates memory response increasing viral load during respiratory viral reinfection

Resolvin D1 (RvD1), which is biosynthesized from essential long-chain fatty acids, is involved in anti-inflammatory activity and modulation of T cell response. Memory CD8+ T cells are important for controlling tumor growth and viral infections. Exacerbated inflammation has been described as impairing memory CD8+ T cell differentiation. This study aimed to verify the effects of RvD1 on memory CD8+ T cells in vitro and in vivo in a respiratory virus infection model. Peripheral blood mononuclear cells were treated at different time points with RvD1 and stimulated with anti-CD3/anti-CD28 antibodies. Pre-treatment with RvD1 increases the expansion of memory CD8+ T cells. The IL-12 level, a cytokine described to control memory CD8+ T cells, was reduced with RvD1 pre-treatment. When the mTOR axis was inhibited, the IL-12 levels were restored. In a respiratory virus infection model, Balb/c mice were treated with RvD1 before infection or after 7 days after infection. RvD1 treatment after infection increased the frequency of memory CD8+ T cells in the lung expressing II4, II10, and Ifng. During reinfection, RvD1-treated and RSV-infected mice present a high viral load in the lung and lower antibody response in the serum. Our results show that RvD1 modulates the expansion and phenotype of memory CD8+ T cells but contributed to a non-protective response after RSV reinfection.     

射频热凝与伽玛刀治疗原发性三叉神经痛的疗效比较

 目的 比较立体定向射频热凝术与立体定向放射技术(伽玛刀)治疗原发性三叉神经痛的疗效。方法 回顾性分析2014-01至2016-01收治的46例原发性三叉神经痛患者临床资料,其中立体定向射频热凝术21例(射频组),伽玛刀治疗25例(伽玛刀组)。对比两组治疗后疼痛控制率、并发症和复发情况,评定疗效。结果 46例随访时间12～36个月,平均25.6个月。根据巴罗(BNI)疼痛量表评定,射频组术后Ⅰ级17例(81.0%),Ⅱ级2例(9.5%),Ⅲ级1例(4.8%),Ⅳ～Ⅴ级1例(4.8%),有效Ⅰ～Ⅲ级20例(95.2%);伽玛刀组术后Ⅰ级12例(48.0%),Ⅱ级4例(16.0%),Ⅲ级6例(24.0%),Ⅳ～Ⅴ级3例(12.0%),有效Ⅰ～Ⅲ级22例(88.0%)。术后两组比较,射频组Ⅰ级优于伽玛刀治疗组,差异有统计学意义(P＜0.05),Ⅱ、Ⅲ级及有效率差异无统计学意义。术后射频组面部麻木发生率(81.0%)明显高于伽玛刀组(9.5%),咀嚼肌力下降、口角流涎、角膜炎发生率等两组对比,差异无统计学意义。射频组、伽玛刀组复发各1例。结论 射频热凝和伽玛刀治疗三叉神经痛疗效肯定,射频治疗起效快,恢复优良率高,但有一定的侵袭性和并发症;伽玛刀治疗无创,并发症少且轻,相对更安全,缺点是起效较慢。     

环境内分泌干扰物与多囊卵巢综合征关系的研究进展

环境内分泌干扰物（EED）广泛存在于日常生活中，是一类可以干扰激素行为的外源性化学物。EED可以结合人体内不同的受体，通过多种机制增强或抑制体内正常的内分泌功能，从而引发多种疾病。多囊卵巢综合征（PCOS）病因复杂，已有研究结果表明PCOS的发生与环境因素有关。相关流行病学和基础实验研究表明，EED参与PCOS的发生、发展，但具体作用机制仍需进一步研究。现就EED与PCOS的关系及可能的相关作用机制进行阐述，总结EED与PCOS的关系,为干预PCOS患者的生活方式并阻断疾病发生提供新的线索。     

Phenobarbital use and neurological problems in FMR1 premutation carriers

Fragile X Syndrome (FXS) is a neurodevelopmental disorder caused by a CGG expansion in the FMR1 gene located at Xq27.3. Patients with the premutation in FMR1 present specific clinical problems associated with the number of CGG repeats (55–200 CGG repeats). Premutation carriers have elevated FMR1 mRNA expression levels, which have been associated with neurotoxicity potentially causing neurodevelopmental problems or neurological problems associated with aging. However, cognitive impairments or neurological problems may also be related to increased vulnerability of premutation carriers to neurotoxicants, including phenobarbital. Here we present a study of three sisters with the premutation who were exposed differentially to phenobarbital therapy throughout their lives, allowing us to compare the neurological effects of this drug in these patients.     

中医辨证治疗宫颈HPV感染研究进展

宫颈人乳头瘤病毒(HPV)感染在临床较为常见,特别是高危型HPV持续感染是引起宫颈癌的主要原因,由此引起人们的重视。宫颈HPV感染在中医学归属"带下病"范畴,湿邪、热邪与毒邪为其主要致病因素,笔者对近5年中医辨证治疗宫颈HPV感染的文献做一归纳,针对不同临床表现总结出四大治法即扶正祛邪法、清热除湿法、清热解毒法和健脾除湿法及对应治疗的方药,以供各位医者借鉴及开拓思路。     

Public Awareness and Mask Usage during the COVID-19 Epidemic: A Survey by China CDC New Media

An online survey conducted March 18–19, 2020 on the official China CDC WeChat account platform was used to evaluate the effect of public education about masks usage during the new coronavirus disease 2019 (COVID-19) epidemic. Chinese nationals older than 18 were eligible for the survey. The survey collected 5,761 questionnaires from the 31 provinces, municipalities, and autonomous regions of mainland China. 99.7% and 97.2% of the respondents answered correctly that respiratory droplets and direct contact were the main transmission routes. 73.3% of the respondents considered COVID-19 to be ‘serious’ or ‘very serious’. When going to the hospital, 96.9% (2,885/2,976 had gone to a hospital) used a mask during the COVID-19 epidemic, while 41.1% (2,367/5,761) did not use a mask before the epidemic. Among the respondents that used public transportation and went shopping, 99.6% and 99.4%, respectively, wore masks. Among respondents who returned to work, 75.5% wore a mask at the workplace, while 86.3% of those who have not returned to work will choose to use masks when they return to the workplace. The Chinese public is highly likely to use a mask during COVID-19 epidemic, and the mask usage changed greatly since the COVID-19 outbreak. Therefore, public education has played an important role during the COVID-19 epidemic.     

2369例高校职工幽门螺杆菌感染检测结果分析

目的 观察高校教职工人群胃幽门螺杆菌(HP)感染情况,加强对其感染的防控工作。方法 空腹采集教职工体检人群静脉血,检测胃幽门螺杆菌抗体滴度,观察其感染情况。结果 人群HP总阳性率为43.31%。其中:男性阳性率为45.82%,女性阳性率为40.53%,差异有统计学意义(P<0.05)。按年龄段分组比较其感染情况,各年龄组阳性率男性普遍高于女性,但只有41～50岁组男性与女性比较差异有统计学意义(P<0.05)。41～50岁年龄组和51～60岁年龄组阳性率高于其他年龄组,差异有统计学意义(P<0.05)。结论 胃幽门螺杆菌感染率较高,且男性感染率高于女性。应加强对该疾病的预防保健工作,提高人群防病治病的健康意识。