老年人非酒精性脂肪性肝病与血脂血糖水平及体重指数的关系

目的探讨老年人非酒精性脂肪性肝病(NAFLD)与血脂血糖水平、体重指数等指标的关系。方法298例老年人按非酒精性脂肪性肝病诊断标准分为脂肪肝组(114例)和非脂肪肝组(184例),观察临床表现,检测血脂、血糖、体重指数、肝功能等指标并进行分析。结果脂肪肝组血脂、血糖水平、体重指数明显增高,和非脂肪肝组比较差异有显著性(P相似文献   

银杏外种皮多糖对SGC-7901细胞p53基因的表达及端粒酶活性的影响

目的　研究银杏外种皮多糖对人胃癌SGC 790 1细胞 p5 3基因表达及端粒酶活性的影响。 方法　应用免疫组织化学ABC法检测 p5 3基因的表达 ;应用TRAP ELISA法检测端粒酶活性。结果　银杏外种皮多糖 (80～ 16 0mg·L-1,4 8h)能抑制人胃癌SGC 790 1细胞突变型 p5 3基因的表达及其端粒酶活性。结论　银杏外种皮多糖抑制SGC 790 1细胞增殖的作用机制可能与其下调突变型 p5 3基因的表达和对端粒酶活性的抑制作用有关     

骨髓增生异常综合征细胞形态学观察

目的：观察骨髓增生异常综合征(MDS)骨髓细胞形态学病态改变。方法：用瑞氏-姬姆萨混合染液染色，进行骨髓及外周血细胞学分析。结果：粒、红、巨核三系都有不同程度的病态造血。粒系主要以细胞核浆发育不平衡，内外浆、中性粒细胞核分叶不能或Pelger-Huet样畸形。结论：MDS三系均有不同程度的病态改变，患者以中老年居多，分型主要以RA为主。     

克隆病与副结核杆菌

分支杆菌、尤其是副结核杆菌长期被疑为克隆病的致病菌。采用聚合酶链反应（ＰＣＲ）技术对手术及内镜活检的７４例石蜡包埋组织（３６例克隆病、１８例溃疡性结肠炎和２０例非炎性肠病对照组织）中的副结核杆菌ＤＮＡ进行检测。扩增的靶ＤＮＡ为副结核杆菌染色体特异重复插入序列ＩＳ９００上４００ｂｐ的片段。其产物特异性通过生物素标记的副结核杆菌全染色体探针Ｓｏｕｔｈｅｒｎ杂交证实。结果显示：４７．２％的克隆病、１１．１％的溃疡性结肠炎和１５．０％的非炎性肠病对照组织中检出了副结核杆菌ＤＮＡ，并发现克隆病组织中副结核杆菌的检出率与其病变部位和是否存在肉芽肿病变无关。提示部分克隆病组织中确有副结核杆菌存在，且后者与克隆病间可能存在特殊相关性。     

健脾益气和胃法防治大鼠胃缺血再灌注损伤的实验研究

目的:探讨大鼠胃缺血后再灌注胃粘膜损伤与氧自由基脂质过氧化的相关性及以健脾益气和胃法防治其胃粘膜损伤的细胞保护作用机制。方法:采用腹腔动脉结扎法,造成胃缺血20min,解除结扎,再灌注60min 后,取出胃粘膜,观察正常对照组、病理模型组和用药各组中胃粘膜之氧自由基脂质过氧化物及清除酶系诸指标的变化。结果:大鼠胃缺血后再灌注,胃粘膜脂质过氧化物(LPO)含量比正常对照组明显增加,超氧化物歧化酶(SOD)、非蛋白巯基(NPSH)、谷胱甘肽过氧化物酶(GSH-Px)含量则明显降低(P<0.01);术前口服健脾益气和胃中药各组胃粘膜 LPO 含量明显低于病理组,SOD、NPSH、GSH-Px 水平则明显高于病理组(P<0.05,P<0.01);而过氧化氢酶(CAT)和前列腺素 E_2(PGE_2)在实验各组的比较无统计学意义(P>0.05)。结论:氧自由基脂质过氧化参与胃缺血再灌注的胃粘膜损伤过程,健脾益气和胃法的治疗对胃缺血再灌注损伤具有保护作用。此作用可能是通过抑制氧自由基过氧化损伤,提高胃粘膜 SOD、GSH-Px、NPSH 活性,增强其抗氧化能力而实现的。     

STD门诊患者泌尿生殖道支原体感染状况及其药敏试验

目的 了解STD门诊支原体感染情况及耐药情况。方法 从265例患者的尿道和宫颈留取标本，进行支原体培养，阳性者再行10种抗生素药物试验。结果 265位惠者中有93位感染支原体，其感染率为35．1％；UU、MH以及UU MH混合感染率分别为：25．7％、3．0％及6．4％。对UU药敏试验较为敏感的抗生素有：强力霉素、美满霉素及交沙霉素，耐药率分别为61．8％、63．0％及58．8％。耐药性最高者为左旋氧氟沙星及氧氟沙星，耐药率分别为52．9％及50．0％。结论 泌尿生殖道中支原体普遍存在耐药性。强力霉素和美满霉素及交沙霉素是治疗生殖道支原体感染的首选药物。     

深圳市宝安区人民医院1998-2003年菌痢监测分析

目的 为了解深圳市宝安区人民医院所在地新安街道办事处细菌性痢疾(以下简称菌痢)发病情况及菌株类型及耐药性变化情况，进行连续多年的监测工作。方法 对宝安区人民医院1998—2003年菌痢监测数据进行统计分析。结果 宝安区新安街道办事处茵痢发病率高于全区同期水平，茵型变化以福氏为主；茵株药敏实验结果变化不大。大多数对丁胺卡那霉素、先锋霉素、复达欣、庆大霉素、环丙氟哌酸敏感；而对妥布霉素、氨苄青霉素、复方新诺明等耐药。结论 菌痢的耐药性必须进一步加强监测工作，及时掌握菌株及耐药菌株的变化情况，合理使用抗生素，控制肠道传染病的流行。     

Visual event-related potentials in progressive supranuclear palsy, corticobasal degeneration, striatonigral degeneration, and Parkinson's disease

To determine whether there are characteristic changes in event-related potentials (ERPs) in parkinsonian syndromes we studied 8 patients with progressive supranuclear palsy (PSP), 10 patients with corticobasal degeneration (CBD), 9 patients with striatonigral degeneration (SND), and 16 patients with idiopathic Parkinson's disease (PD) with a mean duration of illness shorter than 5 years in each group. A visual oddball paradigm was employed to elicit P300. P300 to the rare target and rare nontarget stimuli and reaction time (RT) to rare target stimuli in each group were compared with those in the corresponding age-matched normal control group and to each other after age correction. The correlation of P300 and RT to motor disability score was also studied. In PSP P300 amplitude was markedly reduced while in CBD P300 latency was prolonged. P300 amplitude to rare nontargets in SND and PD was attenuated. The mean RT in the PSP and the CBD group was significantly longer than in the other two groups. The mean RT in PD and P300 amplitude to rare nontargets in both CBD and PD showed significant correlation with the severity of motor disability. Simultaneous measurement of P300 and RT may yield useful supplementary information in facilitating diagnosis of parkinsonian syndromes in addition to clinical criteria. Received: 6 April 1999, Received in revised form: 5 August 1999, Accepted: 12 January 2000     

Effects of tetrandrine on phenotypic modulation of vascular smooth muscle cells and expression of p38 MAPK as well as MKP-1 after intimal injury of rabbit carotid arteries

Objective： To study the effects of tetrandrine （Tet） on phenotypic modulation of vascular smooth muscle cells （VSMCs） and expression of p38 mitogen-activated protein kinase （p38MAPK） as well as mitogen-activated protein kinase phosphatase-1 （MKP-1） after vascular intimal injury. Methods： HE staining was used to analyze vascular morphology of sham-injured group, injured group and Tet-treated group at day 28. lmmunohistochemistry, Western blot and RT-PCR were respectively used to detect the expression change of smooth muscle a-actin （SMa-actin）, proliferation cell nuclear antigen （PCNA）, p38MAPK and MKP-1 of injured group and Tet group at days 7, 14 and 28 after balloon injury. Results： ① All layers of vascular wall in sham-injured group were intact at day 28. The neointimal area was significantly increased and the lumen area notably decreased in injured group at day 28. The neointimal proliferation in Tet treated group was less than that in injured group, and the lumen area of Tet group was significantly increased than that of injured group at day 28. ②Compared with the injured group, the expression of SMa-actin, PCNA, p38MAPK and MKP-1 of vascular wall in Tet group was no difference, and the neointimal proliferation condition was also basically as same as injured group at day 7 after injury. The expression of PCNA and p38MAKP in Tet group was obviously lower than that in injured group, and the expression of MKP-1 in Tet group was obviously higher than that in injured group at days 14 and 28 after injury. The expression of SMa-actin in Tet group was slightly higher than that in injured group at days 14 and 28 after injury. Conclusions： Tet could reduce neointimal proliferation by inhibiting VSMCs phenotypic modulation and p38MAPK signaling transduction pathway as well as its down regulation.