华支睾吸虫病患者血清中免疫球蛋白和C_3含量的变化

本文分别采用 ELISA 双抗体夹心法和琼脂单向免疫扩散法检测了华支睾吸虫病患者血清中各类免疫球蛋白和 C_3的含量。结果显示:患者血清中 I gG、I gM 和 I gE 的水平明显高于正常对照组,I gA 的水平与正常人相比无明显改变;而 C_3的含量显著低于正常人。提示:人体感染华支睾吸虫病后,I gG、I gM 和 I gE 与相应的特异性抗体呈同步增高的趋势;补体和抗体协同参与华支睾吸虫病的免疫学发病机理,在此过程中消耗补体,使 C_3含量降低。     

慢性肺心病病人血清及发中锌铜的测定

本实验研究了21例正常人及43例慢性肺心病急性发作期病人血清及发中锌、铜含量。结果表明重度呼衰病人血清锌含量明显低于正常人,也低于轻、中度呼衰病人。病人组血清铜含量明显高于正常人。发中锌、铜含量病人组与正常人无显著差别。实验证明慢性肺心病病人,尤其重症,存在某些微量元素变化,可能参与某些病理生理过程。     

颈动脉间隙肿瘤的MRI诊断

目的：探讨颈动脉间隙肿瘤的MRI影象特征及其病理、解剖学基础和诊断价值。材料和方法：分析25例颈动脉间隙肿瘤的MRI征象，并与手术病理或血管造影比较。结果：多数肿瘤的病理改变或血管造影的特征能在MRI图像上反映，囊变和含丰富粘液的神经源性肿瘤T2加权像呈边界光滑的极高信号，化学感受器瘤瘤内的血管表现为扭曲条状和圆点状的极低信号，颈内动脉瘤信号分层，转移瘤边界毛糙或不清；不同来源的肿瘤与颈内、外动脉或颈总动脉和颈内静脉的位置关系有解剖上的相关性，有利于准确的定位和鉴别诊断；25例中术前诊断正确22例（88％）。结论：MRI对颈动脉间隙肿瘤的定位和定性具有重要的诊断价值，结合病史可减少误诊。     

腭裂修复术后患者与正常人群颅颌面形态的比较研究

应用X线头影测量方法对4～7岁时曾接受腭裂修复术的腭裂患者（现年龄为18～25岁）的颅颌面形态进行测量分析,将结果与湖北籍正常人群测量资料比较,结果表明腭裂修复术后患者颅底发育未受影响,面突角显著减少,上颌骨长度显著缩短,下颌角增大,下颌平面陡度增大,腭裂患者在4～7岁时接受手术治疗,至成年时存在不同程度的颅颌面发育畸形。     

miR-21对骨质疏松小鼠骨髓基质细胞增殖的影响

目的探讨miR-21对骨质疏松小鼠骨髓基质细胞(BMSCs)增殖的影响。方法采用双侧卵巢切除法构建骨质疏松小鼠模型(VOX),分离、培养、纯化小鼠BMSCs并采用si PORT Neo FX转染pre-miR-21、pre-miR-negative control(pre-miR-NC)、antmiR-21、ant-miR-negative control(ant-miR-NC)并进行RT-PCR验证,MTT法检测小鼠BMSCs增殖情况、茜素红与碱性磷酸酶染色法检测小鼠BMSCs成骨能力、Western-blotting检测细胞增殖、成骨分化相关蛋白水平。结果骨质疏松症小鼠BMSCs中miR-21相对表达水平低于Ctrl组(P0.05),OVX-pre-miR-21组BMSCs中miR-21相对表达水平、细胞增殖、PCNA水平、Ki-67水平、ALP染色程度、ALP活性、茜素红染色程度、Runx2水平、Osterix水平均高于OVX-pre-miR-NC组(P0.05),OVX-premiR-NC组BMSCs中miR-21相对表达水平、细胞增殖、PCNA水平、Ki-67水平、ALP染色程度、ALP活性、茜素红染色程度、Runx2水平、Osterix水平均显著低于Ctrl-pre-miR-NC(P0.05); OVX-ant-miR-21组BMSCs中miR-21相对表达水平、细胞增殖、PCNA水平、Ki-67水平、ALP染色程度、ALP活性、茜素红染色程度、Runx2水平、Osterix水平均显著低于OVX-ant-miR-NC组(P0.05),OVX-ant-miR-NC组BMSCs中miR-21相对表达水平、细胞增殖、PCNA水平、Ki-67水平、ALP染色程度、ALP活性、茜素红染色程度、Runx2水平、Osterix水平均显著低于Ctrl-ant-miR-NC(P0.05)。结论提高miR-21表达水平可促进骨质疏松小鼠BMSCs增殖能力与成骨分化能力。     

Analysis of 96 cases of solitary pulmonary nodule diagnosed by MSCT

Objective： The aim of this study was to explore the diagnostic value of multi-slice computer tomography （MSCT） in solitary pulmonary nodule （SPN）. Methods： Contrastive analysis of the differences of CT signs between benign and malig- nant SPN. Results： The typical sign of pleural indentation was a reliable sign for lung cancers. Vacuole sign suggested lung cancer highly. Blood vessels cluster involving the vein alone had big opportunity to lung cancer. Type I tumor-bronchial relation was the most common relation in lung cancers. Type V tumor-bronchial relation was the most common relation in benign SPN. Conclusion： MSCT had a very high diagnostic value in SPN.     

Hyper-Inflammatory Response Involves in Cardiac Injury Among Patients With Coronavirus Disease 2019

BackgroundInflammation can facilitate development of coronavirus disease 2019 (COVID-19) and cardiac injury is associated with worse clinical outcomes. However, data are relatively scarce on the association between hyper-inflammatory response and cardiac injury among COVID-19 patients.MethodsThe study was designed based on severe and critically ill patients with COVID-19. Information on clinical characteristics and laboratory examinations was collected from the electronic medical records and analyzed.ResultsThere were 32.4% (n = 107) of patients with cardiac injury. The median age was 67 years, and 48.8% (n = 161) of patients were men. Hypertension was the most common in 161 (48.8%) patients, followed by diabetes (16.7%, n = 55) and coronary heart disease (13.3%, n = 44). Compared to cases without cardiac injury, those with cardiac injury were older, had higher proportions of coronary heart disease, and leukocyte counts, significantly elevated concentrations of N-terminal pro-B-Type natriuretic peptide, high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor (TNF)-α, interleukin-2 receptor (IL-2R), IL-6, and IL-8, but lower lymphocyte counts. A significant positive correlation was observed between high-sensitivity troponin I and inflammatory cytokines. Logistic regression analysis showed that hs-CRP, TNF-α and IL-6 were independent risk factors for cardiac injury.ConclusionsCardiac injury was associated with elevated levels of inflammatory cytokines among severe and critically ill patients with COVID-19, suggesting that hyper-inflammatory response may involve in cardiac injury.     

Impact of administration of nicorandil prior to percutaneous coronary intervention in treatment of acute myocardial infarction: A protocol for systematic review and meta-analysis

Background:In order to provide new evidence-based medical evidence for clinical treatment, we undertook a systematic review and meta-analysis to assess the efficacy and safety of nicorandil prior to percutaneous coronary intervention in acute myocardial infarction (AMI) patients.Methods:This systematic review and meta-analysis will be performed according to Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. Two reviewers independently will search randomized controlled trials or observational studies about the treatment of nicorandil on AMI patients. Retrieved databases include Web of Science, ClinicalTrials.gov, Pubmed, Embase, and Cochrane Library. And retrieval time is limited from inception to June 2021. Key words are nicorandil, myocardial infarction, or similar expansion words without publication limitation. Biomechanical studies, in vitro studies, review articles, techniques, case reports, letters to the editor, and editorials are excluded.Results:The results of our review will be reported strictly following the PRISMA criteria and the review will add to the existing literature by showing compelling evidence and improved guidance in clinic settings.OSF registration number:10.17605/OSF.IO/UEPKB.     

母牛分支杆菌制剂对小鼠腹腔巨噬细胞产生一氧化氮水平的影响

一氧化氮（ＮＯ）在活化巨噬细胞抗某些肿瘤细胞和微生物上起重要作用。用不同剂量的母牛分支杆菌制剂免疫ＢＡＬＢ／ｃ小鼠，检测小鼠腹腔巨噬细胞产生一氧化氮的水平，结果显示受免疫小鼠腹腔巨噬细胞产生一氧化氮水平明显高于未免疫小鼠（Ｐ＜０．０１－０．００１）。不同剂量母牛分支杆菌制剂免疫的ＢＡＬＢ／ｃ小鼠，腹腔巨噬细胞产生的一氧化氮水平差别不显著（Ｐ＞０．０５）。因此认为，母牛分支杆菌制剂作为结核病免疫治疗剂其作用之一是活化巨噬细胞产生一氧化氮，从而达到杀菌的目的。     

BRCA1 BRCA2在结直肠息肉和癌中的表达及临床意义

目的：检测同源修复基因家族成员BRCA1、BRCA2在结直肠息肉和癌中的表达,探讨其与临床病理特征的关系。方法：利用免疫组化SP法分别检测27例正常结直肠粘膜、30例结直肠增生性息肉、33例结直肠腺瘤性息肉、60例结直肠腺癌组织中 BRCA1、BRCA2的表达水平。结果：BRCA1、BRCA2在正常结直肠粘膜、结直肠增生性息肉、结直肠腺瘤性息肉、结直肠癌组织中的表达率逐渐增高,差异有显著性（P＜0．05）,二者的表达与结直肠癌中的性别、年龄、分化程度、Ducks分期等均无统计学差异（P＞0．05）;二者在结直肠癌组织中的表达水平呈正相关（r＝0．295,P＜0．05）。结论：BRCA1、BRCA2表达呈正相关;二者可能参与结直肠癌的发生、发展;联合检测结直肠病变组织中的BRCA1蛋白、BRCA2蛋白的表达水平有助于大肠癌的早期发现。