Single-cell transcriptome atlas reveals protective characteristics of COVID-19 mRNA vaccine

Messenger RNA (mRNA) vaccines are promising alternatives to conventional vaccines in many aspects. We previously developed a lipopolyplex (LPP)-based mRNA vaccine (SW0123) that demonstrated robust immunogenicity and strong protective capacity against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection in mice and rhesus macaques. However, the immune profiles and mechanisms of pulmonary protection induced by SW0123 remain unclear. Through high-resolution single-cell analysis, we found that SW0123 vaccination effectively suppressed SARS-CoV-2-induced inflammatory responses by inhibiting the recruitment of proinflammatory macrophages and increasing the frequency of polymorphonuclear myeloid-derived suppressor cells. In addition, the apoptotic process in both lung epithelial and endothelial cells was significantly inhibited, which was proposed to be one major mechanism contributing to vaccine-induced lung protection. Cell−cell interaction in the lung compartment was also altered by vaccination. These data collectively unravel the mechanisms by which the SW0123 protects against lung damage caused by SARS-CoV-2 infection.     

葛根素对心力衰竭患者心功能及氧化型低密度脂蛋白的影响

目的：观察葛根素对慢性心力衰竭者心功能及氧化型低密度脂蛋白（ｏｘ－ＬＤＬ）的影响。方法：选择１９９７～１９９８的我科住院的７８例慢性心力衰竭患者,随机分为常规治疗组（简称常规组）和常规＋葛根素治疗组（简称葛根素组）,所有病人均给予强心、利尿、扩张知管等常规治疗,葛根素组加用葛根素４００ｍｇ．ｄ＾－１,程为１０ｄ。结果：治疗后,两组病人临床心功能均有改善,但两组差异无显著性（Ｐ〉０．０５）,葛根素     

散发性戊型肝炎和散发性甲型肝炎临床比较

目的：了解散发性戊型肝炎（ＨＥ）和散发性甲型肝炎（ＨＡ）的差别。方法：对４２例ＨＥ和７０例ＨＡ的临床资料进行比较。结果：ＨＥ与ＨＡ相比,其发病年龄以青壮年为主（Ｐ〈０．０１）血清总胆红素（ＴＢｉｌ）、谷丙转氨酶（ＡＬＴ）、谷草转氨酶（ＡＳＴ）水平高（Ｐ〈０．０１）,黄疸持续时间及住院时间长（Ｐ〈０．０１）,重型肝炎发生率高（Ｐ〈０．０５）。结论：ＨＥ未成年患者发病少见,肝细胞损害较ＨＡ明显,预后差     

细菌L型的医院感染及其质粒谱分析研究

目的为了全面防止医院感染,我们对细菌Ｌ型的医院感染进行了研究。方法对医院内环境中８００份标本及医院感染患者９１８份标本分离出的金黄色葡萄球菌Ｌ型、大肠埃希氏菌Ｌ型及铜绿假单胞菌Ｌ型进行了质粒谱分析和药敏试验。结果本院环境及医院感染患者细菌Ｌ型总检出率分别为１９．０％和１６．７％。不同来源的３种细菌Ｌ型的多重耐药性无显著性差异。不同来源３种细菌Ｌ型的同源性比例均较高,分别为９０．３％、７５．０％、８４．２％。结论细菌Ｌ型医院感染患者的病原菌主要来自医院内环境     

新生儿胆红素脑病23例临床分析

１９９５年１月－１９９７年１２月仅三年收治新生儿胆红素脑病２３例,有增长趋势,引起胆红素脑病的病因依次是溶血（６５．２％）低体重（５６．５％）,感染（４７．８％）特别提出必须重视对体重〈２．５ｋｇ,低于胎龄儿生后一周内的管理,医学教育上应把新生儿黄疸,胆红素脑病作为必,必考的课程,对其层从事内儿科,妇产科的医务人员也要进行有关的继续教育。     

硬脊膜的蠕变率与椎间盘突出症的自然病程

目的　为探讨椎间盘突出症缓慢自愈的机理和治疗方法的选择提供一定的帮助。方法　应用２１ 例新鲜的猪的腰段硬脊膜,分组测量其蠕变率的变化。结果　各组蠕变率均与时间和载荷成正比,控温组发生速度快而大,模拟组发生慢而小。结论　蠕变率是椎间盘突出症症状缓解的力学基础,促进蠕变率发生的治疗,同减压治疗一样,都是病因治疗。     

6—11岁农村学龄儿童行为问题及其影响因素的研究

目的　调查农村学龄儿童的行为问题及其影响因素。方法　采用Ａｃｈｅｎｂａｃｈ 儿童行为量表和自制的儿童行为问题影响因素问卷,调查６～１１ 岁农村儿童８６６ 名。结果　农村学龄儿童行为问题检出率为２０．６７％ ±１．４０％ 。行为问题的影响因素主要为家庭因素、父母因素、婴幼期疾病。结论　农村学龄儿童行为问题的发生是多种因素相互影响、相互作用的结果。应采取综合措施进行防治。     

国产房水引流物置入术治疗难治性青光眼远期疗效观察

１９９３年７月～１９９８年１月为１０３例（１０６只眼）难治性青光眼患者施行国产房水引流物（ＨＡＤ）置入术。术后平均随访３２８月。术后１年时平均眼压２２±１．４ｋＰａ。术后１～５年的手术成功率分别为８３８％,８０４％,７７１％,７１０％及６４３％。术中联合应用丝裂霉素Ｃ的病例,其术后１年时的成功率为８９５％。术后常见的并发症有持续性浅前房,局限性脉络膜脱离及眼压升高等。认为ＨＡＤ可用于治疗难治性青光眼。     

生物素-亲合素斑点免疫金渗滤试验检测血清中登革病毒4型抗原

目的建立用斑点免疫金渗滤试验（ＤＩＧＦＡ）检测血请中登革病毒抗原的方法。方法一株ＤＶ４型特异性单克隆抗体点加于硝酸纤维膜上,以捕获血清中的ＤＶ４抗原。借助黄病毒组反应性单克隆抗体、生物素化革抗鼠ＩｇＧ抗体、金标ＳＰＡ和金标亲合素,建立用ＤＩＧＦＡ检测血清中登革病毒抗原的方法。结果常规ＤＩＧＦＡ检测的敏感性高于病毒分离,而生物素一亲合素ＤＩＧＦＡ（ＢＡ－ＤＩＧＦＡ）的敏感性又高于常规的ＤＩＧＦＡ。常规ＤＩＧＦＡ可检测到５、０ＴＣＩＤ５０的病毒抗原,ＢＡ－ＤＩＧＦＡ可检测到４３ＴＣＩＤ５０的病毒抗原。结论作者建立的ＢＡ－ＤＩＧＦＡ简便、快速、敏感、特异,可用于快速诊断登革病毒４型感染。     

Patient,Provider, and Treatment Factors Associated with Poor-Quality Care for Schizophrenia

Interventions are needed to improve the quality of care for schizophrenia. However, in designing these interventions it would be helpful to understand better which patients are at highest risk for poor-quality care and why care for this disorder is often of poor quality. We study the extent to which patient and treatment factors are associated with poor-quality care in 224 patients randomly sampled from two mental health clinics. Quality of medication management is evaluated using an established method based on national treatment recommendations. Multivariate regression is used to study the effect of patient and treatment factors on treatment quality, controlling for provider. Risk for poor-quality care was greater for patients who were more severely ill, older, and less compliant with treatment recommendations. There were trends toward poor management of symptoms in men and substance abusers, and poor management of side effects in Black patients. Provision of poor-quality care was associated with failure to document symptoms and side effects in the medical record. Interventions to improve care for schizophrenia should attend to the need for accurate clinical assessment and strategies for managing challenging clinical situations.