兔后腔静脉血栓形成后血小板膜糖蛋白CD62p、CD63的表达变化

目的:研究兔后腔静脉血栓形成后对血小板膜糖蛋白CD62p、CD63表达的影响。方法:实验兔55只,随机分血栓形成组(T组)、假手术组(S组)、正常对照组(N组),分别于术后1、3、7、14、28天采静脉血行流式细胞术,测血小板CD62p、CD63的表达水平。结果:CD62p在T组1、37、、14、28天的阳性表达率分别为(1.00±0.34)%、(1.27±0.50)%(、2.57±0.45)%、(1.13±0.6)%、(0.29±0.11)%,CD63的阳性表达率则为(1.59±0.52%)、(3.53±1.28)%(、2.37±0.45)%(、2.79±1.81)%(、2.21±0.56)%,与S组、N组比较差异具有显著性;CD62p和CD63两者之间存在正相关性(r=0.362,P<0.01)。结论:CD62p、CD63是检测血小板活化的敏感、特异的指标,其表达在血栓形成7天内呈显著增高,在7天以后逐渐下降。     

Expression of activation markers on alveolar macrophages in allergic asthmatics after endobronchial or whole-lung allergen challenge

We examined the effect of endobronchial (EB) or whole-lung (WL) challenge with ragweed or Timothy grass extract on alveolar macrophage (AM) activation. Expression of 17 constitutive activation markers on AM was examined by flow cytometry. Late-phase bronchial obstruction was greater after WL challenge, while changes in bronchoalveolar lavage cytology (eosinophil accumulation) were greater after EB challenge. After EB challenge, levels of 10 of 17 markers (CD11a, CD11b, CD14, CD18, CD23, CD32, CD63, CD64, HLA-class I, and HLA-DR) were significantly increased (by 33-234%, P < 0.05). Six markers (CD16, CD29, CD33, CD35, CD44, CD71, and HLA-DQ) remained unchanged. Levels of seven markers following EB challenge (CD14, CD16, CD18, CD29, CD32, HLA-class I, and HLA DQ) correlated with airway sensitivity to methacholine. WL challenge only increased expression of HLA-class I. The different results obtained with the two challenge methods probably depend on higher local concentrations of allergen in the EB challenge. We suggest that activation of AM occurs following EB challenge with antigen in asthmatics.     

10140例肾结石患者临床合并症及相关因素分析

目的 评估肾结石患者的人口学分布和临床合并症特点并探索其相关因素,为临床防治提供依据。方法 回顾性分析2017年1月至2020年12月海军军医大学附属长海医院门诊及住院患者中影像学报告为肾结石的10140例患者。根据受累肾脏情况,分为单侧肾结石组(单侧组)及双侧肾结石组(双侧组),分析两组人群在年龄、性别、实验室检查、常见临床合并症上的差异,采用logistic回归探寻可能影响双侧肾结石形成的相关因素。结果 10140例肾结石患者的平均年龄为57.75±13.30岁,男女比例为2.25:1。其中单侧组8171例（80.6%）,双侧组1969例（19.6%）。所有肾结石患者最常见的临床合并症依次为高血压病(HT)、肿瘤、高尿酸血症、糖尿病(DM)、冠心病(CHD)、脑血管疾病。两组在年龄、性别的分布,以及HT、肿瘤、高尿酸血症、CHD的合并率方面差异有统计学意义(P<0.05);而在体重指数(BMI)、DM、脑血管疾病的合并率方面差异无统计学意义(P>0.05)。实验室检查方面,单侧组血清肌酐(Cr)、尿酸(UA)、尿pH值水平低于双侧组(P<0.05);而高密度脂蛋白胆固醇(HDL-C)水平高于双侧组(P<0.05);空腹血糖(FPG)、甘油三酯(TG)、胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)水平方面两组之间差异无统计学意义(P>0.05)。此外,性别(男性)、高尿酸血症可能是双侧肾结石形成的重要相关因素(P<0.05),而合并肿瘤则更倾向于表现为单侧肾结石患者(P<0.05)。结论 肾结石更多见于中年男性,代谢综合征相关疾病在肾结石的发展过程扮演了重要角色,有必要加强这些疾患的早期防治。肾结石患者肿瘤合并率高,提示两者存在关联。此外,较单侧肾结石而言,男性、合并高尿酸血症与双侧肾结石形成关系更密切,应当引起重视。     

Organ-preference of metastasis

Summary The initial, site-specific colonization of secondary organs by blood-borne cancer cells appears to be mediated by endothelial cell adhesion molecules. These molecules are part of the organ-specific microvascular phenotype and are regulated through complex interactions of the endothelium with the extracellular matrix (e.g., distinct matrix macromolecules and growth factors). They are inducedin vitro by growing unspecific (large vessel) endothelial cells on extracts of organ-specific biomatrices. In many respects, these molecules are similar to the various classes of chemically different adhesion molecules that regulate lymphocyte traffic, but are believed to be distinct from the inducible adhesion molecules that govern leukocyte adhesion during acute episodes of inflammation. Biochemical and biophysical data indicate that preference of tumor cell adhesion to organ-specific microvascular endothelium may not require qualitative differences of such homing receptors between endothelia, but may be explained on the basis of quantitative receptor differences as well as differences of receptor avidity. Following adhesion, the metastatic cascade proceeds by the establishment of metabolic conduits between the endothelium and adherent tumor cells. This heterotypic coupling represents an early step in the extravasation of cancer cells from the microvasculature, initiating endothelial cell retraction from its basement membrane and recanalization around the arrested tumor cell. These events, together with local growth promoting effects exerted by the metastasized organ, are believed to provide the basis for Paget's seed and soil hypothesis of metastasis.     

透析器复用对补体及单个核细胞激活的影响

目的：了解透析器复用对补体和单个核细胞激活的影响。方法：比较透析器第四次复用与首次使用时,血浆补体终末复合物（SC5b-9）浓度及分离的单个核细胞（PBMC）在体外培养产生IL－1β、TNF-α和IL－6量的差异。结果：血仿膜透析器用过氧乙酸和福尔马林消毒后第四次复用时,血浆SC5b-9浓度变化幅度较首次使用明显降低;PBMC在LPS刺激下体培养产生IL－1β、TNF-α和IL－6的量与首次使用相比差异无显著性。结论：血仿膜透析器用过氧乙酸和福民林消毒复用,可在一定程度上降低其补体激活能力,但不影响PBMC产生细胞因子。     

活化血小板表达在早期诊断和监测老年糖尿病肾病中的价值

目的 :探讨α颗粒膜蛋白 (CD62 P)和溶酶体膜蛋白 (CD63 )活化表达对老年糖尿病肾病早期诊断和病情监测的临床价值。方法 :采用流式细胞仪测定 196例老年 2型糖尿病患者 (其中单纯糖尿病 94例 ,糖尿病肾病 10 2例 )血浆CD62 P和CD63 水平 ,并与 40例健康人进行比较。同时观察糖尿病肾病血糖控制后CD62 P和CD63 的变化。结果 :单纯糖尿病组CD62 P和CD63 高于健康人组 (P <0 .0 0 1) ,糖尿病肾病组高于单纯糖尿病组 (P <0 .0 0 1) ,对糖尿病肾病患者进行血糖控制和抗凝治疗 6个月后 ,CD62 P、CD63 和 2 4h尿白蛋白排泄率 (UAER)水平下降 ,与对照组比较有显著性差异。结论 :CD62 P和CD63 对老年糖尿病肾病的早期诊断和病情监测有重要的临床价值     

Clinical Study on Influence of Buyang Huanwu Decoction (补阳还五汤) on the Metabolic Imbalance of Endothelin and Calcitonin Gene Related Peptide in Patients with Early Cerebral Infarction

ＦｒｏｍＭａｙ1995ｔｏＭａｙ1997,ＢｕｙａｎｇＨｕａｎｗｕＤｅｃｏｃｔｉｏｎ（补阳还五汤,ＢＨＤ）ｗａｓｕｓｅｄｂｙｔｈｅａｕｔｈｏｒｓｉｎｔｒｅａｔｉｎｇｐａｔｉｅｎｔｓｗｉｔｈｃｅｒｅｂｒａｌｉｎｆａｒｃｔｉｏｎｔｏｅｘｐｌｏｒｅｉｔｓｅｆｆｅｃｔｏｎｍｅｔａｂｏｌｉｃｄｉｓｔｕｒｂａｎｃｅｏｆｅｎｄｏｔｈｅｌｉｎ（ＥＴ）ａｎｄｃａｌｃｉｔｏｎｉｎｇｅｎｅｒｅｌａｔｅｄｐｅｐｔｉｄｅ（ＣＧＲＰ）．Ａｎｏｔｈｅｒｇｒｏｕｐｏｆｐａｔｉｅｎｔｓｗｅｒｅｔｒｅａｔｅｄｗｉｔｈｗｅｓｔｅｒｎｍｅｄｉ…     

补肾复方下调老年大鼠激活诱导的T细胞凋亡

目的　研究补肾复方延缓衰老的免疫学机制。方法　采用电镜、ＤＮＡ凝胶电泳及ＴＵＮＥＬ标记的流式细胞仪分析技术,对激活诱导的Ｔ细胞凋亡进行定性、定量分析。结果　老年大鼠对照组细胞凋亡的百分率为４７．０％,年龄大鼠组为２２．２％（Ｐ＜０．０１）;补肾组为３７．２％,与老年大鼠对照组相比有显著性差异（Ｐ＜０．０５）。结论　老年大鼠激活诱导Ｔ细胞凋亡的敏感性增高;补肾复方能降低激活诱导的老年大鼠Ｔ细胞凋亡,提示下调激活诱导Ｔ细胞凋亡可能是补肾延缓衰老的免疫学机制之一。     

Bacterially produced human B7-1 protein encompassing its complete extracellular domain maintains its costimulatory activity in vitro

Ｏｂｊｅｃｔｉｖｅ　Ｔｏｉｎｖｅｓｔｉｇａｔｅｗｈｉｃｈｏｆｔｈｅｔｗｏｉｍｍｕｎｏｇｌｏｂｕｌｉｎ (Ｉｇ ) ｌｉｋｅｄｏｍａｉｎｓ ,ｉｍｍｕｎｏｇｌｏｂｕｌｉｎｖａｒｉａｂｌｅｒｅｇｉｏｎｈｏｍｏｌｏｇｏｕｓｄｏｍａｉｎＩｇＶ (ｈＢ7 1ＩｇＶ) ,ｏｒｉｍｍｕｎｏｇｌｏｂｕｌｉｎｃｏｎｓｔａｎｔｒｅｇｉｏｎｈｏｍｏｌｏｇｏｕｓｄｏｍａｉｎＩｇＣ (ｈＢ7 1ＩｇＣ)ｏｎｈｕｍａｎＢ7 1ｍｏｌｅｃｕｌｅｃｏｎｔａｉｎｔｈｅｒｅｃｅｐｔｏｒｂｉｎｄｉｎｇｓｉｔｅｓ ,ａｎｄｔｏｅｖａｌｕａｔｅｉｆｔｈｅＢ7 1ｍ…     

实验性急性胰腺炎大鼠胰蛋白酶原激活肽的产生及意义初探

探讨了胰蛋白酶原激活肽 (TAP)在预测大鼠实验性急性胰腺炎严重程度中的意义。将 90只大鼠按抽签法随机分为 5组 :EP和NP( 3%和 5%牛磺胆酸钠逆行胆胰管注射 )组 ,TP(乌司他丁治疗 )组 ,CP(生理盐水对照 )组 ,OP(假手术 )组。用酶联免疫法测定各组制模后 3、6、2 4h的血浆TAP浓度。结果 :制模后 3h和 6h血浆TAP浓度NP组〔( 4.798± 0 .1 69)、( 3.999± 0 .2 99)nmol/L〕比EP组〔( 2 .4 1 6± 0 .1 4 8)、( 3.356± 0 .2 1 1 )nmol/L〕明显增高 (P <0 .0 1 ) ;在制模 6h后TP组血浆TAP浓度 ( 1 .61 1± 0 .1 1 3)nmol/L ,比EP组明显降低 (P <0 .0 1 )。提示 :血浆TAP浓度可以作为预测急性胰腺炎严重程度的指标