高原鼠兔人工饲育初探

目的 为在东北地区开发饲育高原鼠兔提供基础资料。方法 在室内人工饲育条件下,对高原鼠兔的外观、习性及食性等方面进行观察与研究。结果 高原鼠兔具有体型小、性情温顺、繁殖力强及饲料简单等特点,对低质饲料的利用率和对植物纤维的需求较高,超过家兔,更易饲养,结论 高原鼠兔在东北地区室内饲养是可以适应的。将高原鼠兔作为实验动物,有利于节省饲养空间和经费。     

肝性脑病的现代护理

肝性脑病 (Hepatic Enoephalopathy,HE)是内科常见的危重症之一。据文献报道 :肝性脑病的发生主要是由于肝功能损害严重及广泛的侧枝循环形成 ,来自肠道毒物直接进入体循环 [1 ] ,引起中枢神经系统代谢紊乱为特点并出现意识行为改变或昏迷的临床综合征。1　病因与发病护理1.1　病因国内外资料表明肝性脑病绝大多数是由于慢性病所致 ,主要疾病为肝硬化 ,次要原因为重症肝炎及肝癌 [2 ]。前者不仅为晚期肝细胞功能衰竭所致 ,也可因侧枝循环而导致分流性脑病 ,严重的中毒性肝炎、妊娠急性脂肪肝及 Reye综合征均可发生肝性脑病。1.2　诱因肝性…     

HPLC法测定氧氟沙星注射液的含量

目的：采用ＨＰＬＣ法测定氧氟沙星注射液的含量。方法：采用ＨＰＬＣ法,以氧氟沙星为对照品,检测波长为２９３ｎｍ,甲醇：枸缘酸（０．０５ｍｏｌ／Ｌ）：乙腈：醋酸铵溶液（０．５ｍｏｌ／Ｌ）：１０ｇ／Ｌ磷酸（１００：７５：２２：１：２）为流动相。结果：氧氟沙星的平均回收率为９７．４４％、ＲＳＤ为１．８３％。结论：本法结果准确,精密度、重现性均好,可作为该制剂的含量测定。     

一种新的新生儿溶血病实验诊断技术—微柱凝胶技术

目的建立一种新的微柱凝胶抗球蛋白实验诊断新生儿溶血病。方法采用微柱凝胶抗球蛋白实验与试管抗球蛋白实验同时平行做三项实验:直接抗球蛋白实验、游离IgG抗体测定、放散实验。结果两法检测126例(Rh(D)均为阳性)疑为新生儿溶血病标本,阳性率分别为76例(60.3％)、50例(39.7％)。结论该法具有操作简单、方便、标本用量少、结果易判定、敏感性高、特异性强、结果可较长时间保存等优点。与临床诊断符合率高达98％,为新生儿溶血病提供实验室可靠诊断依据。     

Differences in incidence and fatality of COVID-19 by SARS-CoV-2 Omicron variant versus Delta variant in relation to vaccine coverage: A world-wide review

We aim to evaluate the evolution differences in the incidence and case fatality rate (CFR) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta and Omicron variants. The average incidence and CFRs were described between different countries. A gamma generalized linear mixed model (GLMM) was used to compare the CFRs of Delta and Omicron variants based on vaccination coverage. Totally, 50 countries were included for analyses. The incidence of coronavirus disease 2019 (COVID-19) ranged from 0.16/100,000 to 82.95/100,000 during the Delta period and 0.03/100,000 to 440.88/100,000 during the Omicron period. The median CFRs were 8.56 (interquartile range [IQR]: 4.76–18.39) during the Delta period and 3.04 (IQR: 1.87–7.48) during the Omicron period, respectively. A total of 47 out of 50 countries showed decreased CFRs of the Omicron variant with the rate ratio ranging from 0.02 (95% confidence interval [CI]: 0.01–0.03) (in Cambodia) to 0.97 (95% CI: 0.87–1.08) (in Ireland). Gamma GLMM analysis showed that the decreased CFR was largely a result of the decreased pathogenicity of Omicron besides the increased vaccination coverage. The Omicron variant shows a higher incidence but a lower CFR around the world as a whole, which is mainly a result of the decreased pathogenicity by SARS-CoV-2's mutation, while the vaccination against SARS-CoV-2 still acts as a valuable measure in preventing people from death.     

Early warning signals for Omicron outbreaks in China: A retrospective study

The Omicron variant has become the dominant COVID-19 variant worldwide due to its rapid and cryptic spread. Therefore, successful early warning is of great importance to be able to control epidemics in their early phase, before developing into large outbreaks. COVID-19-related Baidu search index, which reflects human behavior to a certain degree, was used to retrospectively detect the warning signs for Omicron variant outbreaks in China in 2022. The characteristics and effects of warning signs were analyzed in detail. We detected the presence of early warning signs (both high and low thresholds) and found that these occurred 4–7 days earlier than traditional epidemiological surveillance and >20 days earlier than the implementation of the local “lockdown” policy. Compared with the “high threshold” warning, the early warning effect of the “low threshold” is also vital because it indicates a negligence about epidemic prevention and control. However, there is obvious heterogeneity in the optimal threshold for detecting early warning signs and their distribution in different cities. Multi-source and multi-point early warning systems should be established via combining internet-based big data in the future to conduct effective and early real-time warning. This would create precious time for the early control of COVID-19 outbreaks.     

The acceptance of SARS-CoV-2 rapid antigen self-testing: A cross-sectional study in China

Compared with the nucleic acid amplification test (NATT), the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) rapid antigen self-testing (RAST) has advantages in speed and convenience. However, little is known about people's acceptance and influencing factors for SARS-CoV-2 RAST. A cross-sectional study was conducted from April 21 to 30, 2022 in China. The χ² test and multivariate logistic regressions were used to identify the influencing factors. The structural equation model was used to test the extended protective motivation theory (PMT) model hypotheses. Among the total of 5107 participants, 62.5% were willing to accept the SARS-CoV-2 RAST. There were significant differences in acceptance among different residences (p < 0.001), educational level (p < 0.001), occupation (p < 0.001), monthly income (p < 0.001), travel frequency (p < 0.05), and feelings about NATT (p < 0.001). Response efficacy (β = 0.05; p = 0.025) and self-efficacy (β = 0.84; p < 0.001) had a positive effect, while response cost showed a negative effect (β = −0.07; p < 0.001). The public's major concerns about SARS-CoV-2 RAST are its reliability, testing method, price, and authority. Overall, a moderate intention to use SARS-CoV-2 RAST was found among the Chinese population. The extended PMT can be used for the prediction of intention to accept the RAST. We need to take measures to increase people's acceptance of SARS-CoV-2 RAST.     

Primary hepatic non-Hodgkin's lymphoma: a case report and review of the literature

~ hepatic lympholna (PHL) is very uncommon, with which most clinicians are not fallliar. We report a case Of p~ hepatic non-Hodgkin's lymphomawhoSe clinical ~stalons were Presented edng withP~ssiVe liVer failure, and the comet diagnosis wascoallrmed by liver biopsy. A review of the lite~re anddiscussion of PHL ~ also Presented.~ ~ ~sPatient A 32-year-old man was abbotted to ourdepallment on APril l, 1999 because of fatigUe, anowhaand loss Of weight for 5 months, feVer for 4 d. The onse…     

Role of Th1/Th2 cells activation in chronic hepatitis B virus infection

Clonal analysis of mndne T cells has led to the idenuncation of Z typeS of Th cells, Thl and on. Thl cells,chacterized by secreting interferon-y (Iap-Y), interleukin-2 (IL2) and tumor necrosis factor-5 (TNF-3), involved Principally in cell-mediated ~ity and play acrucial role in defending the host against intracellularPathogens such as a Vallety of yi~es. ThZ cells,secreting IL4, ms, IL-6 and ilo, mostly regulateh~ immune responSe, and may oafs Paxtial PIDtection against extracellula…