Protection by nitecapone against sodium taurocholate-induced damage to cultured gastric cells

The goal of this study was to observe if nitecapone protected against taurocholate-induced damage in primary cultured rat gastric mucosal cells, as well as in a well-differentiated human gastric epithelial cell line (MKN 28). Prostaglandins were measured to analyze the protection mechanism. In primary rat gastric mucosal cell culture, nitecapone 125–250 M protected the cells significantly against damage induced by sodidum taurocholate, increasing cell viability by 31–38%. In the human gastric epithelial cell line, in which mitochondrial activity was measured as an indication of cell viability, nitecapone (62.5–250 M) protected the cells against sodium taurocholate-induced damage by 12–20%. Prostaglandin E₂, thromboxane B₂, and 6-keto-prostaglandin F₁ measurements in the primary cultured rat gastric mucosal cells showed that nitecapone (125 M and 250 M) significantly stimulated prostaglandin E₂ production (84.7% and 61.0%, respectively), and inhibited thromboxane B₂ formation (50% at 250 M), while the 6-keto-prostaglandin F₁ formation was unaffected. Nitecapone had no effect on prostaglandin E₂ production in the MKN 28 epithelial cell line. Indomethacin or aspirin, at concentrations that did not affect cell viability, antagonized the stimulative effect of nitecapone on prostaglandin E₂ formation in the primary cultured rat gastric mucosal cells. Although the prostaglandin E₂ synthesis was blocked, nitecapone still protected against cell damage induced by taurocholate. These results demonstrated the direct and efficacious protection of nitecapone on gastric cell level and suggest that the cytoprotection by nitecapone against taurocholate may not be mediated through the mechanism of stimulated synthesis of prostaglandin E₂.     

流行病学调查探讨炎症性肠病的危险因素

目的通过问卷式大样本病例调查，探讨炎症性肠病（IBD）致病的可能危险因素。方法采用问卷法，对140例确诊IBD患者及140例配对的健康个体调查，问卷包括遗传、吸烟的年限、牛奶摄入量、油炸食品摄入量和酒精摄入量等共14项内容，收回问卷后对结果进行COX回归分析，筛选出IBD的具有统计学意义的致病危险因素。结果COX回归分析提示牛奶摄入量、油炸食品摄入量、吸烟的年限在IBD致病因素中具有统计学意义。结论牛奶摄入、油炸食品摄入、吸烟可能是IBD的致病危险因素。     

养老机构老年人饮食自我效能现状及影响因素分析

目的 调查养老机构老年人饮食自我效能现状及其影响因素。方法 采用便利抽样法,2020年8月—12月,选取银川市3所养老机构老年人350名,使用一般资料调查表、营养知识和态度调查表、微型营养评定简表和饮食自我效能量表进行问卷调查,采用随机森林模型和多元线性回归分析饮食自我效能的影响因素。结果 350名养老机构老年人的饮食自我效能总得分为（54.98±8.04）分,条目均分为（3.43±0.50）分。随机森林排序结果显示,影响饮食自我效能的前5位因素依次为营养态度、锻炼时长、营养知识、营养状况及学历。多元线性回归分析结果显示,营养知识、营养态度、营养状况、锻炼时长、学历为饮食自我效能的影响因素,与随机森林结果相似。结论 养老机构老年人的饮食自我效能处于中等水平,营养态度积极、营养知识水平高、营养状况佳、每天锻炼30 min以上、学历高的养老机构老年人,其饮食自我效能较高。护理人员应综合考虑以上因素,制订老年人护理计划,提高其饮食自我管理信心和能力,从而改善营养状况。     

Intratumoral and Peritumoral Analysis of Mammography,Tomosynthesis, and Multiparametric MRI for Predicting Ki-67 Level in Breast Cancer: a Radiomics-Based Study

Molecular Imaging and Biology - To noninvasively evaluate the use of intratumoral and peritumoral regions from full-field digital mammography (DM), digital breast tomosynthesis (DBT), dynamic...     

心内直视术中鱼精蛋白毒性反应的临床研究

目的：回顾性分析心内直视术鱼精蛋白毒性反应发生情况，以总结临床特点，找出防治对策。方法：近两年连续1105例心内直视手术中，发生鱼精蛋白毒性反应53例，将其分为有反应与无反应组，轻度与中重反应组，并比较其临床特点，结果：鱼精蛋白毒性反应发生率为4．8％，有反应有无反应组，轻度与中重度反应组临床一般情况无明显差别，仅中重度反应组的主动脉阻断时间与鱼精蛋白毒性反应持续时间明显较轻度反应组长（P＜0．05），中重度反应组死亡率达50％，结论：心内直视术中鱼精蛋白毒性反应发生率高，应引起临床上足够的重视，鱼精蛋白毒性反应的发生难以预测，中重度反应死亡率高，预后差，鱼精蛋白用量应适度，充分认识鱼精蛋白毒性反应的临床特点和及时再转机车不有助于防治此类事件发生。     

经皮瘤内注射乙酸治疗兔VX2肝种植瘤实验研究

目的　探讨经皮乙酸注射 (PAI)的肿瘤灭活机制、疗效及治疗方法。材料与方法　兔VX2肝多发瘤模型8只 ,超声导引下经皮穿刺病灶 ,每只兔肝内 3个瘤灶内分别一次性注射 5 0 %乙酸、无水酒精和生理盐水 ,注射剂量以超声显像病灶被药液完全浸润为度 ,观察注射后 1小时、1天、3天和 14天大体、光镜、电镜下肿瘤病理改变及 14天后肿瘤生长情况。结果　各组肿瘤均有继续增大 ,PAI组肿瘤增长率最小 (2 5 7.39%± 14 0 .6 4 % ) ,坏死率最大(4 6 .2 7%± 16 .30 % ) ,与生理盐水对照组比较均有显著性差异 (P增长率 =0 .0 36 ,P坏死率 =0 ) ,与经皮无水酒精注射(PEI)组比较无显著性差异 (P >0 .0 5 )。组织病理学改变 :PAI后 1小时肿瘤细胞即溶解坏死 ;1天、3天肿瘤中央区大片凝固性坏死 ,边缘部呈网格状坏死 ,岛样残留瘤灶内可见扩张血管腔 ,边缘部肿瘤细胞以膜性结构破坏为主 ;14天后肿瘤表现继续扩大的凝固性坏死区 ,边缘残留少量肿瘤组织 ,并见大量纤维肉芽组织增生。PEI组各时段、区域肿瘤组织细胞破坏坏死改变相对PAI组较轻 ,纤维、肉芽组织增生较少、较晚 ,但PEI治疗后肿瘤血管内皮细胞损伤表现较明显。结论　PAI具有肿瘤灭活作用 ,其效力高于PEI。PAI肿瘤灭活效应主要是由乙酸的化学特性决定的 ,其作用途     

狼疮性脑病诊断治疗及其护理进展

综述了狼疮性脑病的概念、诊断、治疗、护理进展，重点介绍了狼疮性脑病的抢救护理、大剂量免疫抑制荆冲击治疗护理及血液净化护理。     

诺维本联合顺铂治疗Ⅲb—Ⅳ期非小细胞肺癌疗效分析

目的：对于不能手术的Ⅲｂ～Ⅳ期非小细胞肺癌，目前仍缺乏有效的治疗方法。本研究意在探讨ＮＰ 方案对Ⅲｂ～Ⅳ期ＮＳＣＬＣ的疗效。方法：本研究应用诺维本（２５ｍｇ／ｍ２ ，ｄｌ、ｄ８）加顺铂（４０ｍｇ ｄｌ～３）治疗Ⅲｂ～Ⅳ期非小细胞肺癌２９ 例。结果：取得ＣＲ１ 例、ＰＲ例１１ 例，总有效率４１３７％ ，初治者有效率４７６２％ ，复治者有效率２５ ％ ，主要毒性反应为白细胞减少，发生率为９６５５ ％ ，其中Ⅲ、Ⅳ度骨髓抑制占６８９６％ ，常规应用止吐治疗后，消化道反应轻微，仅４ 例（１３７９ ％ ）发生周围神经毒性。结论：研究表明本方案疗效明确，耐受性好     

A Clinical and Experimental Study on the Protective Effects of Jiangzhi Tongmai Fang on Endothelial Injury

31 cases of atherosclerosis (AS) were treated with Jiang Zhi Tong Mai Fang ([symbol: see text], formula of JZTMF), and its effect was compared with 30 cases treated with lovastatin in the control group. Clinically, the JZTMF formula showed an effect of regulating blood lipids, and therefore it was antiatherosclerotic. The mechanism is, probably, restoration of the function of endothelial cells (EC) by increasing the synthesis of 6-keto-PGF1 alpha and decreasing the release of endothelin (ET) as evidenced in the experimental study.     

浆膜腔积液细胞学检查的诊断价值

对１１０例结核性和恶性浆膜腔积液进行了细胞学检查。结果显示找到癌细胞对鉴别两者有决定性意义，多次送检癌细胞检出率显著。引外，以下几点可供鉴别参考：结核性渗液嗜酸性粒细胞（Ｅ）显著高于恶性积液（Ｐ＜０．０１），Ｅ＞０．１提示有结核可能、恶性积液组织细胞（Ｈ）较结核性多见（Ｐ＜０．０５）。