RAPD法对肺炎克雷白杆菌的基因分型

为了探讨肺炎克雷白杆菌的基因分型，我们用煮沸法制备细菌基因组ＤＮＡ，进行随机引物－聚合物酶链反应，所有１８个肺炎克雷白杆菌菌株均产生了特异性的，可重复的扩增条带，提示：ＲＡＰＤ方法可用于肺炎克雷白杆菌的分型鉴定和进行分子流行病学研究。     

Density distribution of erythrocytes in class A2 (insulin requiring) gestational diabetes

We evaluated the age distribution of erythrocytes in pregnancy complicated by gestational diabetes class A2 by the density distribution of cells (DDC) method. The values for normal pregnancy and nonpregnant women were obtained from recently published studies. The cumulative density distribution of cells (DDC) of women with gestational diabetes resembled that of normal pregnancy.     

中国中原地区33555名妇女妇科疾病发生情况与五种因素关系的调查报告

自１９９２年３月至１９９４年５月，对中原地区４个省２０多个县（市）近２００个单位３３５５５名２０～７５岁的已婚妇女，进行妇科疾病发生情况与年龄、职业、文化、月经、孕产等五种因素关系的调查分析。在３３５５５名妇女中，患病者２２３７０人，总患病率为６６．６７％，查出妇科疾病４２种，计７６９７４例次。结果证明：以２５～３５岁年龄组发病率最高，其中以内生殖器炎症为主；职业以经商者发病率高，特别是性病患者高于其他职业者二倍以上；文化程度以小学、初中者发病率高，尤其宫颈炎更明显；月经情况：随着经前期紧张综合征的加重，更年期综合征发病率增高；孕产次数越多，患病率越高。本次调查未发现宫颈癌，进一步证明我国对妇女保健工作的关心和重视。     

五种螯合剂对大鼠体内微量元素影响的观察

观察了５种常用螯合剂对大鼠体内微量元素排出量、组织分布的变化。结果表明，５种螯合剂可不同程度地增加机体必需微量元素Ｚｎ、Ｃｕ、Ｍｇ和Ｃａ经尿液排出量。ＥＤＴＡ和ＤＴＰＡ的影响尤为明显。ＥＤＴＡ和ＤＴＰＡ可使Ｚｎ经尿液的排出量增加１６－５２倍，ＤＴＰＡ使肝脏Ｚｎ含量减少１５．９％（Ｐ〈０．０５），肝脏Ｃｕ含量下降６０％（Ｐ〈０．０５）。ＥＤＴＡ和ＤＴＰＡ注射后，肾中Ｚｎ含量明显增高，相当对照大鼠３．     

Tissue distribution metabolism and excretion of 2,2′,4,4′, 5-pentachlorodiphenyl ether in the rat

The tissue distribution, metabolism and excretion of ¹⁴C-2,2,4,4,5-pentachlorodiphenyl ether (PCDE) were studied in the rat. Radioactivity was distributed in all tissues examined, with the highest concentrations being found in the fat followed by the skin, liver, kidney and muscle. Most of the radioactivity found in the tissues was due to unchanged PCDE. Decay of PCDE in the blood was fitted to a four-compartment pharmacokinetic model, and the last compartment had a half-life of 5.8 days. A total of 55% and 1.3% of an orally administered dose was excreted in feces and urine, respectively, in 7 days. More than 64% of the fecal radioactivity was due to unchanged PCDE, while hydroxylated PCDE accounted for 23%.     

三七总皂苷眼用凝胶在兔眼部的组织分布研究

[目的] 研究三七总皂苷眼用凝胶在兔眼组织的药物分布。[方法] 选取12只新西兰大白兔,随机分为4组,每组3只兔子。每只兔眼分别给予凝胶41.67 μL/kg（即三七皂苷R1 0.132 mg/kg,人参皂苷Rg1 0.452 mg/kg）。给药后于0.5、1、1.5、2 h空气栓塞各处死1组兔子。取眼球,分离各眼组织。采用UPLC-MS检测不同时间点各眼组织的药物含量。[结果] 兔眼给予三七总皂苷眼用凝胶后,三七皂苷R1在兔角膜、晶状体、房水、玻璃体中的最大含量分别为13.16、1.16、0.86、0.10 μg/g,人参皂苷Rg1在角膜、晶状体、房水、玻璃体中的最大含量分别为38.49、4.50、3.38、0.28 μg/g。[结论] 三七总皂苷眼用凝胶滴到兔眼后,三七皂苷R1和人参皂苷Rg1可透过角膜分散到各眼组织。在0~2 h内,各眼组织中的药物含量由高到低依次为角膜、晶状体、房水、玻璃体,表明三七皂苷R1和人参皂苷Rg1可透过角膜,到达眼后部组织,在2 h时各眼部组织的药物含量依然较高,在眼组织的保留时间长。     

儿童急性白血病伴侵袭性肺部真菌感染的临床特点、真菌分布及影响因素分析

目的 分析儿童急性白血病伴侵袭性肺部真菌感染（IPFI）的临床特点、真菌分布及影响因素。方法 回顾性分析2018年1月—2022年12月安徽省儿童医院82例急性白血病患儿的临床资料,按照是否合并IPFI分为IPFI组（18例）和非IPFI组（64例）。比较两组患儿的一般临床资料;采用多因素一般Logistic回归模型分析儿童急性白血病伴IPFI的危险因素;分析IPFI组患儿的临床特征、真菌菌种分布。结果 18例IPFI患儿均有不同程度的发热,体温>38.5℃占比72.22%,咳嗽咳痰/白色黏痰占比83.33%;18例IPFI患儿中5例表现为结节实变影,7例表现为多发斑片状阴影,8例表现为散在斑片状阴影合并小结节,2例表现多发云雾状毛玻璃样高密度影、间质病变为主。16例获得真菌微生物学证据,血培养2例,肺泡灌洗液涂片1例,血或者肺泡灌洗液NGS检测13例,其中以毛霉菌（31.25%）、曲霉菌（25.00%）、近平滑假丝酵母菌（18.75%）为主;多因素一般Logistic回归分析结果显示,化疗方案含激素■、中性粒细胞缺乏时间≥10 d[■]、抗菌药物使用种类≥2种■均是儿童急性白血...     

The regional distribution of adenosine-regulating enzymes in the left and right ventricle walls of control and hypertrophic heart

Summary The transmural distribution of the adenosine-generating enzyme 5-nucleotidase (5N) and of the adenosine-degrading enzymes adenosine deaminase (ADA), AMP deaminase (AMP-D) and adenosine kinase (Ado-K) were determined across the walls of left and right ventricles of control and hypertrophic rat hearts.The enzyme distribution across the left ventricle wall (but not across the right wall) of normal hearts was not uniform: 5N activity shows its highest levels in the subepicardial and in the subendocardial regions, whereas all the other enzyme activities show their lowest levels. A similar pattern of transmural distribution was also detected in other mammalian species (ox and pig).In the experimental cardiac hypertrophy, caused by two different types of chronic cardiac overload, the levels and the profiles of transmural distribution of 5N and ADA enzyme activities may significantly change across the rat left ventricle wall.     

Distribution of 2-naphthol sulphotransferase and its endogenous substrate adenosine 3′-phosphate 5′-phosphosulphate in human tissues

The activity of sulphotransferase towards 2-naphthol and the concentration of its endogenous substrate, adenosine 3'-phosphate 5'-phosphosulphate (PAPS), have been measured in five specimens of human liver, lung, and kidney, and the mucosa from the ileum and the ascending, descending and sigmoid colon. The activity of 2-naphthol sulphotransferase (mean nmol.min-1.mg-1 protein) was 1.82 (liver); 0.034 (kidney); 0.19 (lung); 0.64 (ileum); 0.47 (ascending colon); 0.50 (descending colon); 0.40 (sigmoid colon). The concentration of PAPS (mean nmol.g-1 wet tissue) was 22.6 (liver); 4.8 (kidney); 4.3 (lung); 12.8 (ileum); 8.1 (ascending colon); 7.5 (descending colon); 6.2 (sigmoid colon). The concentration of PAPS and the activity of 2-naphthol sulphotransferase were higher in the liver than in the extrahepatic tissues. There was significant difference between ileum and ascending colon, both the activity of sulphotransferase and the concentration of PAPS being higher in the former. 2-Naphthol sulphotransferase activity and the concentration of PAPS have consistent distribution patterns. Differences between the tissues studied were more marked for sulphotransferase than for its endogenous substrate.     

携带肝细胞生长因子基因重组质粒在大鼠体内的组织分布研究

目的 研究携带肝细胞生长因子基因的重组质粒（pUDKH）经肌肉注射给药后在大鼠体内的组织分布及其与大鼠基因组DNA的整合情况。 方法 二级Wistar大鼠雌雄各20只，按体重和取样时间的不同随机分为12h、24h、3d、7d、14d、21d的各实验组（给予pUDKH，2．0mg／kg）和注射后3d取样的对照组（给予PBS，200ul／只），依次将各组大鼠摘眼球取血后脱臼处死，按脑、心、肺、胸腺、肝、肠系膜淋巴结（MLN）、脾、肾、生殖腺、左腿肌肉、右腿肌肉的顺序取样。经典酚／氯仿抽提法提取各组织总DNA，应用紫外分光光度计测定其浓度和纯度，PCR方法检测其中的D肌动蛋白基因；巢式PCR检测各组织总DNA中pUDKH的分布情况；ApnL I酶切分离pUDKH分布阳性各组织中的pUDKHDNA和基因组DNA，巢式PCR检测pUDKHDNA与基因组DNA的整合情况。 结果 各组织总DNA浓度与纯度均符合实验需要，并适于采用PCR或巢式PCR方法进行体内组织分布及基因组DNA整合情况检测。巢式PCR检测显示，在各时间点的右腿肌肉与外周血、注射后3和7d的肝脏、3和14d的生殖腺、7d的胸腺、7和14d的MLN与左腿肌肉等组织中pUDKH分布均呈阳性，而在各时间点的脑、心、肺、脾、肾等组织中pUDKH分布均呈阴性。pUDKH分布阳性的各组织中均未检测到pUDKHDNA与基因组DNA的整合。 结论 pUDKH经肌肉注射给药后，在各时间点大鼠体内各组织中呈现不同的分布谱。在pUDKH分布阳性的各组织中，pUDKHDNA与基因组DNA发生随机整合的概率较低。