包头市补碘地区7～14岁儿童少年T3、T4、TSH及尿碘的测定

目的：了解包头市九原区缺碘地区碘盐防治十年后对7～14岁儿童少年碘代谢和垂体—甲状腺功能的影响。方法：采用放射免疫分析测定T3、T4、TSH含量,采用衍生气相色谱法测定尿碘。结果：观察组T3为(1.09±0.49)μg/L,T4为(107.32±23.13)μg/L,TSH为(3.62±2.73)mIU/L,尿碘为(111.3±104.0)μg/L。对照组T3为(1.37±0.78)μg/L,T4为(114.99±41.65)μg/L,TSH为(6.23±7.98)mIU/L,尿碘为(286.0±120.6)μg/L。结论：缺碘地区7～14岁儿童少年的缺碘状态已得到基本纠正,补碘有效,但部分人群还处在摄碘相对不足的状态。     

与自噬相关疾病的研究进展

<正>1963年,De Duve C在对哺乳动物细胞进行高分辨透射电子显微镜(TEM)观察之后,提出将细胞质物质递送到溶酶体以降解的过程定义为"自噬"[1]。但自噬的重要性直到90年代Ohsumi在酵母的研究中才被注意[2]。2016年Yoshinori Ohsumi因发现了自噬机制而被授予诺贝尔生理学或医学奖,这一发现是对自噬研究的重大突破[3]。自噬是细胞内稳态的主要贡献者,它可以降解细胞内大分子物质和损伤的细胞器,维持代谢平衡和细胞内环     

自噬在缺血后处理减轻小鼠肠缺血再灌注损伤中的作用

目的评价自噬在缺血后处理减轻小鼠肠缺血再灌注损伤中的作用。方法 SPF级健康成年雄性C57BL/6J小鼠32只,9～12周龄,体重25～29 g,采用随机数字表法分为4组(n=8):假手术组(S组)、肠缺血再灌注组(IIR组)、缺血后处理组(IPO组)和缺血后处理+自噬抑制剂3-甲基腺嘌呤组(IPO+3-MA组)。采用夹闭肠系膜上动脉根部45 min恢复灌注2 h的方法制备小鼠肠缺血再灌注损伤模型,IPO组于恢复灌注前3 min给予3个循环灌注30 s,缺血30 s的处理。于再灌注2 h时采集股动脉血样,测定血清二胺氧化酶(DAO)、D-乳酸及肠型脂肪酸结合蛋白(I-FABP)的浓度,随后处死小鼠取小肠组织,光镜下观察病理学结果并行Chiu评分,计算肠组织含水量;Western blot法检测自噬相关蛋白Beclin-1和p62的表达。结果与S组比较,IIR组和IPO组Chiu评分升高,血清DAO、D-乳酸和I-FABP的浓度及肠组织含水量升高,肠组织LC3Ⅱ/LC3Ⅰ比值升高,Beclin-1表达上调,p62表达下调(P<0.05);与IIR组比较,IPO组Chiu评分降低,血...     

Sirt1在衰老进程中的作用的研究进展

Sirt1作为一种去乙酰化酶,在遗传、代谢等方面发挥着重要的生物学作用,它在生命的进程中也起着延缓衰老的作用,然而其延缓衰老的机制尚没有明确的定论.本文从氧化应激、热量限制等多个方面阐述了目前可能的机制与相关分子通路,以期为抗衰老药物以及老年病防治的临床研究提供思路与方向.     

甘露醇致急性肾功能衰竭17例分析

甘露醇因其脱水及良好的降低颅内压作用而被神经外科广泛应用。近年来有报告甘露醇可引起急性肾功能衰竭，我们结合文献对该药物引起的急性肾功能衰竭进行临床分析，并对其治疗作进一步探讨。     

医院自制输液微粒检测质控探讨

用电阻式输液微粒计数器对本市四所医院制剂室生产的40瓶输液进行微粒检测,结果为每ml中含大于10μm的微粒超过20粒的有4瓶,占10％;每ml中含大于25μm的微粒超过2粒的有22瓶,占55％。每ml中含大于10μm的微粒超过20粒的4瓶中大于25μm、微粒2粒。检品中微粒的数量超过药典标准的占55％。这提示输液微粒检测质控工作急待抓紧。     

参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

Objective To investigate the effect of Shenfu injectio (SFI) on the expression of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphatidylinositol 3-kinase (PI3K) during myocardial ischemia-reperfusion (IR) in diabetic rats.Methods Thirty adult male diabetic SD rats weighing 220-280 g were used in this study. Diabetes mellitus was induced with intraperitoneal streptozotocin 60 mg/kg and confirmed by fasting blood glucose > 16.7 mmol/L. The animals were randomly divided into 3 groups ( n = 10 each): group I sham operation (group S); group II IR and group Ⅲ SFI. Myocardial IR was produced by occlusion of left anterior descending branch (LAD) of coronary artery for 30 min followed by 120 min reperfusion in group IR and SFI. LAD was exposed but not occluded in group S.SFI was infused iv at 10 ml·kg-1 ·h-1 before opening the thoracic cavity and at 3ml·kg-1·h-1 after opening the thoracic cavity in group SFI until the end of operation. Equal volume of Lactated Ringer's solution and hydroxyethyl starch was infused instead of SFI in group S and IR. The rats were killed and hearts removed at 120 min of reperfusion for microscopic examination and determination of cardiomyocyte apoptosis (by TUNEL)and expression of PTEN and PDK (by immunohistochemical method). PTEN/PI3K ratio, myocardial infarct size of left ventricle and apoptosis index were calculated.Correlation between apoptosis index and PTEN/PI3K ratio was analyzed. Results Myocardial infarct size and apoptosis index were significantly increased, while expression of PTEN and PI3K was up-regulated in group IR and SFI as compared with group S ( P < 0.05 or 0.01) . PTEN/PI3K ratio was significantly decreased in group SFI as compared with group S (P< 0.05). Myocardial infarct size and apoptosis index were significantly decreased, PTEN expression was down-regulated, PI3K expression was up-regulated and PTEN/PI3K ratio was significantly decreased in group SFI as compared with group IR( P < 0.05) . Myocardial pathological damage was attenuated in group SFI as compared with group IR. Apoptosis index was positively correlated to PTEN/PI3K ratio (r =0.452,P <0.05) .Conclusion SFI can attenuate myocardial IR injury via down-regulating the expression of PTEN,up-regulating the expression of PBK and activating PI3K/Akt signal pathway in diabetic rats.     

一期切开挂线治疗肛周深部脓肿128例

2003-2007年，我院采用一期切开挂线治疗肛周深间隙脓肿128例，取得满意疗效，现报告如下。     

成年人心血管外科术后并发缺血性脑卒中的诊疗

目的 探讨成年人心血管外科术后并发缺血性脑卒中的早期诊断和治疗方法.方法 回顾性分析24例心血管外科术后并发缺血性脑卒中患者的临床资料.在循环、呼吸稳定的前提下,尽早检查以判定缺血性脑卒中类型,密切监测生命体征,注意意识、瞳孔、呼吸深浅及频率、四肢活动的变化.给予降温、脱水、抗凝、调脂、营养脑神经、β受体阻滞剂等药物治疗.治疗过程中维持水、电解质及酸碱平衡.结果 24例患者中男性占66.7％（16/24）.术后早发性缺血性脑卒中6例,术后迟发性缺血性脑卒中18例.冠状动脉旁路移植术12例,单纯瓣膜手术8例,夹层手术2例,其他手术2例.在院死亡2例,病死率8.3％（2/24）.结论 成年人心血管外科术后具有缺血性脑卒中临床表现者应尽早明确诊断,严密的监护与及时全面的治疗是缺血性脑卒中治疗的关键.