老年人群营养状况调查分析

目的 :探讨老年人的膳食及营养状况。方法 :选择 97名 60～ 69岁男性为调查对象 ;膳食调查采用 4天称量法 ;尿负荷试验 ,试验者于清晨空腹时口服维生素 B1、B2 各 5mg及维生素 C 50 0 mg,收集 4 h尿 ,用 2 ,4 -二硝基苯肼比色法测定尿中维生素 C含量 ;用荧光光度法测定尿中维生素 B1、B2 含量。结果 :维生素 A和钙的摄入量分别占供给量 2 1.5%和 52 .7% ,热能和其他营养素摄入量均超过或达到我国推荐的营养素供给量标准。结论 :老年人从膳食中摄入的热能和大多数营养素均达到了供给量标准     

人参单体皂甙Rh2对体外培养的前列腺癌细胞株PC-3M抑制效应的研究

目的:探讨人参单体皂甙Rh2对体外培养的PC-3M细胞株的抗肿瘤效应.方法:采用MTT实验及3H-TdR掺入实验观察Rh2对PC-3M细胞生长状态及细胞DNA合成的影响.结果:高剂量Rh2可明显抑制PC-3M细胞的生长,细胞DNA合成减慢,并呈剂量依赖性.结论:Rh2对PC-3M细胞具有明显的抗肿瘤效应.     

单纯疱疹病毒Ⅰ型在兔脑神经细胞中的形态与形态发生

研究单纯疱疹病毒Ⅰ(HSV-Ⅰ)在兔脑神经细胞(RNC)中的形态与形态发生。方法 用电子显微镜观察超薄切片,并拍照记录。结果RNC感染HSV-Ⅰ6h后,细胞核中即可见散在核衣壳,12h后细胞核和细胞质内均可见到,但以核内多见,24h后病毒量达高峰。胶质细胞内的核衣壳多于神经元,胶质细胞和神经元的细胞质内和胞外可见少量有包膜的完整病毒。病毒颗粒为圆形或椭圆形,核心直径38～54nm,核衣壳77～100hm,成熟病毒115～129nm。结论RNC对HSV-Ⅰ高度敏感,HSV-Ⅰ在兔脑神经元和胶质细胞中的形态发生有一定的差异。     

血管内皮细胞生长因子抗体对胶质瘤生长的影响

探讨血管内皮细胞生长因子(vascularendothelialgrowthfctor,VEGF)对胶质瘤生长的抑制作用。方法应用vEGF抗体作用于C6胶质瘤细胞动物肿瘤模型,观察其抑瘤作用;应用SABC免疫组化技术检测体内生长胶质瘤中微血管密度。结果VEGF抗体对体内生长的胶质瘤有显著抑制作用且呈剂量依赖关系,押瘤率可达82.8％(P<0.01)。经VEGF抗体治疗的胶质瘤中微血管密度较对照组降低(P<0.01)。结论vEGF抗体通过抑制血管生成而抑制胶质瘤生长。     

抗肿瘤多价转移因子对肿瘤患者NK及LAK活性的影响

目的：制备并观察抗肿瘤多价转移因子（M－TF）对肿瘤患者NK及LAK活性的影响。方法：分别用肝癌细胞悬液,胃癌细胞悬液免疫山羊,取其淋巴组织均匀浆透析法制备肝癌特异性转移因子（HCC－STF）和胃癌特异性转移因子（GC－STF）,用肝癌,胃癌及大肠癌混合细胞悬液免疫山羊,制备M－TF。比较其理化性质及对肿瘤患者NK及LAK活性的影响。结果：三种转移因子理化性质十分相似,肽类,核苷酸类物质及氨基酸俯含量相近。HCC－STF能明显增加肝癌患者NK,LAK活性及LAK细胞对肝癌7721细胞的特异细胞毒作用,GC－STF能明显增加胃癌和大肠癌患者NK,LAK活性及LAK细胞对胃癌7901细胞的特异细胞毒作用,M－TF能显著增加肝癌,胃癌及大肠癌的NK,LAK活性及LAK细胞对7721和7901细胞的细胞毒作用,其增加效果与HCC－STF及GC－STF比无明显差异。结论：M－TF具有免疫调节性强,抗肿瘤谱广的特性,值得推广应用。     

生长激素对糖尿病及其微血管病变的影响

目的 :探讨生长激素对糖尿病及其微血管病变的影响。方法 :采用放射免疫法测定 6 7例Ⅱ型糖尿病患者及 18例正常人的血清生长激素 (GH)及胰岛素 (INS)水平。结果 :糖尿病合并微血管病变组 ,空腹生长激素 (FGH)明显高于正常对照组 (P <0 .0 1)及糖尿病无微血管病变组 (P <0 .0 1)。糖尿病无微血管病变组的FGH与正常对照组的FGH相比未见明显差异 (P >0 .0 5 )。餐后 2h的生长激素 (PGH)在 3组之间均无显著差异 (P >0 .0 5 )。FGH与HbA1c、空腹血糖 (FBS)呈正相关 (r=0 .5 46 ,P <0 .0 1;r=0 .437,P <0 .0 1) ,与UAER呈正相关 (r=0 .486 ,P <0 .0 1) ;FGH与病程无相关 (r=0 .2 2 ,P >0 .0 5 ) ,与FINS无相关 (r =- 0 .0 2 9,P >0 .0 5 )。结论 :GH水平的增高 ,与糖代谢紊乱有关 ,参与了糖尿病微血管病变的发生。     

空回肠出血诊断分析

目的 :探讨空回肠出血的病因及诊断方法的选择。方法 :33例空回肠出血患者分别行胃镜、结肠镜、全消化道钡餐、核素扫描、血管造影、剖腹探查及术中肠镜等单项或多项检查 ,手术及病检证实。结果 :33例患者中 ,小肠肿瘤占 13例 (39 39% ) ,以平滑肌瘤多见 ,小肠感染性疾病 8例 (2 4 2 4% ) ,Meckel’s憩室 7例 (2 1 2 1% ) ,血管病变(包括血管瘤 ) 3例 (9 1% ) ,其它 2例 (6 0 6 % )。其临床表现为不同程度的消化道出血 ,黑便多见 (4 2 42 % ) ,约 1/ 3的患者伴有腹痛 ,以中度贫血为多见 (4 8 48% )。核素扫描检查 7例 ,5例均发现小肠出血部位 ,经手术和病理检查证实均为Meckel’s憩室 ;胃镜和 /或结肠镜检查 2 0例 ,5例提示小肠病变 ;剖腹探查 6例 ,其中 1例蓝色橡皮疱痣血管瘤、1例血管畸形、1例坏死性小肠炎 ,3例经术中肠镜发现 1例副伤寒、1例空肠平滑肌瘤、1例肠道钩虫病。结论 :空回肠出血以肿瘤为最常见病因 ,对不明原因的中度贫血伴黑便者应高度怀疑小肠病变 ,核素检查对诊断Meckel’s憩室阳性率高。     

Approach selection and outcomes of craniopharyngioma resection: a single-institute study

Neurosurgical Review - Since there are many approaches for successful craniopharyngioma resection, how to choose a suitable approach remains problematic. The aim of this study was to summarize...     

Berberine plays a cardioprotective role by inhibiting macrophage Wnt5a/β-catenin pathway in the myocardium of mice after myocardial infarction

Myocardial infarction (MI) is one of the diseases with high fatality rate. Berberine (BBR) is a monomer compound with various biological functions. And some studies have confirmed that BBR plays an important role in alleviating cardiomyocyte injury after MI. However, the specific mechanism is unclear. In this study, we induced a model of MI by ligation of the left anterior descending coronary artery and we surprisingly found that BBR significantly improved ventricular remodeling, with a minor inflammatory and oxidative stress injury, and stronger angiogenesis. Moreover, BBR inhibited the secretion of Wnt5a/β-catenin pathway in macrophages after MI, thus promoting the differentiation of macrophages into M2 type. In summary, BBR effectively improved cardiac function of mice after MI, and the potential protective mechanism was associated with the regulation of inflammatory responses and the inhibition of macrophage Wnt5a/β-catenin pathway in the infarcted heart tissues. Importantly, these findings supported BBR as an effective cardioprotective drug after MI.     

Association of TERT gene polymorphisms with clinical benign prostatic hyperplasia in a Chinese Han population of the Northwest region

BackgroundTo investigate the association between single nucleotide polymorphisms (rs10078761, rs12696304, rs2853669, rs16847897, rs2736100, rs10069690) of telomerase gene (TERT) and the risk clinical benign prostatic hyperplasia (BPH) in a Chinese Han population of the Northwest region.MethodsA total of 150 BPH patients and 150 healthy older males from the northwest Chinese Han population were included in this study. The sample size for this unmatched case-control study was estimated by the look-up table method. Meanwhile, the general information and disease data of patients were collected. Age was only collected in healthy control subjects for statistical correction. Genotypes were detected using a multiplex PCR + ligase detection reaction (LDR). Typing results and clinical data were statistically analyzed using multiple linear regression and logistic regression. Pearson correlation was used for Hardy-Weinberg equilibrium.ResultsThe included population is in Hardy-Weinberg equilibrium. There was no significant association between SNP and the risk of BPH by correlation analysis. However, 4 haplotypes (TCTGGT, TCTGTC, TGCCTC, and TGTGTC) were identified as risk factors of BPH by haplotype analysis. The SNP rs2853669 is an independent risk factor for smooth muscle type of hyperplasia. Besides, rs2736100, rs10078761, and rs10069690 which are in linkage disequilibrium are associated with the severity of BPH.ConclusionsPolymorphism of the TERT gene determines the different disease development and pathological manifestations of BPH in the Chinese Han population the Northwest region.