酚妥拉明佐治慢支感染并心衰的护理

目的　探讨慢支感染并心衰的有效治疗和护理方法。方法　采用酚受拉明 2 0mg加入 5%的液2 50ml内静脉点滴。结果　治疗组纠正心衰时间 18.2 6± 2 .12小时 ,对照组纠正心衰时间 2 2 .71± 1.98小时 ,两组比较P <0 .0 1。结论　治疗组经系统治疗和护理 ,纠正心衰时间 ,明显优于对照组。     

细菌L型医院内感染的相关因素分析

目的　探讨导致细菌L型医院感染的有关因素 ,为预防、控制细菌L型医院感染提供依据。方法　 用非条件Logistic回归分析方法 ,对 2 2个危险因素进行分析。结果　 抑制细胞壁合成的抗生素应用、罹患感染性疾病、抗癌药物的使用及住院时间过长与细菌L型医院感染关系密切。结论　 监测细菌L型医院感染的危险因素 ,有利于预防、控制细菌L型医院感染。     

A Phase 2 open label study of ledipasvir/sofosbuvir for 12 weeks in subjects with hepatitis B virus infection

Retrospective data showed that when we administered ledipasvir/sofosbuvir (LDV/SOF) to patients with hepatitis B and C coinfection, there was a modest reduction in hepatitis B surface antigen (HBsAg). Therefore, we hypothesize that similar HBsAg reduction can be seen in hepatitis B virus (HBV) monoinfected subjects. Primary and secondary efficacy endpoints are the decline in HBsAg and HBV DNA at Week 12 from baseline, respectively. We conducted an open-label Phase 2 pilot study to evaluate the safety, tolerability, and antiviral activity of LDV and/or SOF for HBV. Eligible subjects were either suppressed on antivirals (Group B) or inactive chronic HBV (Group A, C, D). Group A and B received LDV/SOF. Group C and D received SOF 400 mg and LDV 90 mg, respectively. All subjects completed the study, and all related adverse events (AEs) were mild. No discontinuations due to AEs or hepatitis flare occurred. At Week 12, HBsAg decline (log₁₀ IU/ml) was similar between Group A (0.399) and B (0.400), less in Group C (0.207), and none in Group D, and there was HBV DNA decline in the inactive chronic HBV groups. LDV and SOF are safe and well tolerated when given to chronic hepatitis B subjects and have modest antiviral activity, particularly when given in combination.     

乙型肝炎胃粘膜病变与胃幽门螺杆菌感染的相关性研究

探讨乙型肝炎患儿胃内幽门螺杆菌（ＨＰ）感染的相关性。方法：受筛选后儿童３５２人,胃镜观察胃十二指肠粘膜病变的程度,并利用粘膜活检快速尿素酶试验测定ＨＰ的感染率。结果：乙型肝炎患儿１１２例ＨＰ感染率为７５．０％,而对照组２４０例ＨＰ感染率为４５．９％,两者之间差异有性。     

绝经后阴道出血242例临床及病理分析

目的 探讨绝经后阴道出血的病因。方法 分析２４２例绝经后阴道出血并行诊断性乔宫的临床和病理资料。结果 绝经后阴道出血的主要病理诊断分另是功能性子宫内膜（６０．７３％）、炎症（２８．９２％）和恶性肿瘤（１０．３５％）。结论 内分泌紊乱性疾病是绝经后出血的常见病因,年老妇女恶性肿瘤发生率高。     

CagA阳性幽门螺杆菌感染与胃癌相关性探讨

目的;探讨幽门螺杆菌（ＨＰ）细胞表达相关抗原阳性与胃癌的相关性及胃癌发生机制。方法：选取胃癌３８便,萎缩性胃炎３０例,正常对照２４例。应用ＥＬＩＳＡ法检测血清ＨＰ ＣａｇＡ抗体,ＰＣＲ法,组织学方法检测ＨＰ感染率,同时检测了癌旁组织ＨＰ感染率。     

诊断幽门螺杆菌感染的新进展

目前幽门螺杆菌感染的检测方法分为侵性检查和非侵入性检查,前者包括：培养,组织学检查,快速尿素酶试验,ＰＣＲ;后者包括：＾１３Ｃ／＾１４Ｃ－尿素呼吸试验及＾１５Ｎ尿氨排泄试验,血清学,尽管检测方法较多,但在临床和科研中,由于使用目的的不同,选择的检测方法有区别。     

Immune cell landscape in symptomatic and asymptomatic SARS-CoV-2 infected adults and children in urban Dhaka,Bangladesh

ObjectivesThe study of cellular immunity to SARS-CoV-2 is crucial for evaluating the course of the COVID-19 disease and for improving vaccine development. We aimed to assess the phenotypic landscape of circulating lymphocytes and mononuclear cells in adults and children who were seropositive to SARS-CoV-2 in the past 6 months.MethodsBlood samples (n = 350) were collected in a cross-sectional study in Dhaka, Bangladesh (Oct 2020-Feb 2021). Plasma antibody responses to SARS-CoV-2 were determined by an electrochemiluminescence immunoassay while lymphocyte and monocyte responses were assessed using flow cytometry including dimensionality reduction and clustering algorithms.ResultsSARS-CoV-2 seropositivity was observed in 52% of adults (18–65 years) and 56% of children (10–17 years). Seropositivity was associated with reduced CD3⁺T cells in both adults (beta(β) = ?2.86; 95% Confidence Interval (CI) = ?5.98, 0.27) and children (β = ?8.78; 95% CI = ?13.8, ?3.78). The frequencies of T helper effector (CD4⁺T_EFF) and effector memory cells (CD4⁺T_EM) were increased in seropositive compared to seronegative children. In adults, seropositivity was associated with an elevated proportion of cytotoxic T central memory cells (CD8⁺T_CM). Overall, diverse manifestations of immune cell dysregulations were more prominent in seropositive children compared to adults, who previously had COVID-like symptoms. These changes involved reduced frequencies of CD4⁺T_EFF cells and CD163⁺CD64⁺ classical monocytes, but increased levels of intermediate or non-classical monocytes, as well as CD8⁺T_EM cells in symptomatic children.ConclusionSeropositive individuals in convalescence showed increased central and effector memory T cell phenotypes and pro-resolving/healing monocyte phenotypes compared to seronegative subjects. However, seropositive children with a previous history of COVID-like symptoms, displayed an ongoing innate inflammatory trait.     

Impact of the COVID-19 pandemic on pathological autopsy practices in Japan

During the coronavirus disease 2019 (COVID-19) pandemic, autopsies have provided valuable insights into the pathogenesis of COVID-19. The precise effect of this pandemic on autopsy procedures in Japan, especially in instances unrelated to COVID-19, has not yet been established. Therefore, we conducted a questionnaire survey from December 2020 to January 2021 regarding the status of pathological autopsy practices in Japan during the first year of the COVID-19 pandemic. The questionnaire was sent to 678 medical facilities with pathologists, of which 227 responded. In cases where a confirmed diagnosis of COVID-19 was not made at the time of autopsy, many facilities counted them as suspected COVID-19 cases if pneumonia was suspected clinically. At around half of the sites, autopsies were prohibited for suspected COVID-19 cases. In addition, the number of autopsies of non-COVID-19 cases during the pandemic period was also investigated, and a significant decrease was observed compared with the incidence in the pre-pandemic period. The COVID-19 pandemic has affected not only the autopsies of COVID-19 cases but also the entire practice of pathological autopsies. It is necessary to establish a system that supports the implementation of pathological autopsy practices during the pandemic of an emerging infectious disease.     

Interleukin-3-dependent potentiation of IgE responsiveness in mouse basophils

Basophils produce interleukins (IL)-4 in response to various stimuli and may contribute to type 2 immune responses to various infections and allergens. We found that resting basophils freshly isolated from mice produce IL-4 in response to IL-3 but not to high-affinity Fc receptor (FcεRI) cross-linking (CL), yet both required the immunoreceptor tyrosine-based activation motif (ITAM) containing adaptor Fc receptor γ-chain (FcRγ), while basophils activated in vitro by IL-3 become responsive to FcεRI CL. Acquisition of responsiveness to FcεRI CL occurred upon infection with Trichinella spiralis or administration of superantigen. Because cultured basophils return to a quiescent state upon starvation with IL-3 with surface FcεRI levels unchanged, this acquisition is reversible and probably reflects intracellular events requiring protein synthesis. Interestingly, similar activation-associated acquisition was observed for responsiveness to other stimuli, including CD200R3 CL, which is known to signal via DAP-12, and the allergen protease papain. This acquisition of responsiveness to FcεRI CL was inhibited by Jak inhibitor. Thus, the IL-3 signal bifurcates downstream of Jak, into two distinct pathway, one leading to IL-4 production and the other to render basophils competent to respond to stimuli dependent on ITAM-containing adaptors DAP12 and FcRγ for IL-4 production.