急性冠脉综合征单核细胞PAPP-A表达与hsCRP的相关性研究

目的 研究急性冠脉综合征（ACS）外周血单核细胞妊娠相关血浆蛋白A（PAPP-A）的表达变化及其与血清高敏C反应蛋白（hsCRP）水平的相关性。 方法从18例不稳定性心绞痛、37例急性心肌梗死和15例稳定性心绞痛及15例正常对照者中分离外周血单核细胞。应用RT-PCR检测PAPP—A的mRNA表达，同时检测血清hsCRP水平。 结果 正常对照者和稳定性心绞痛患者外周血单核细胞存在PAPP—AmRNA低水平表达，ACS患者的表达显著增加；PAPP—A表达水平与血清hsCRP水平呈正相关（r=0．706，P〈0．01）。 结论 急性冠脉综合征时单核细胞PAPP—A表达增加，与hsCRP水平正相关，提示PAPP—A可能通过炎症机制参与ACS的发生发展过程。     

冠心病同型半胱氨酸与其相关酶基因MTHFR、CBS多态性关系的研究

目的:探讨冠心病血浆同型半胱氨酸(Hcy)水平与其代谢相关酶MTHFR、CBS基因型的关系。方法:采用试剂盒法提取人基因组DNA;采用聚合酶链反应-限制性片段长多态性(PCR-RFLP)法检测MTHFR基因型,采用扩增阻滞实变体系法(ARMS)检测CBS基因型。结果:冠心病患者MTHFR基因型异常者Hcy水平明显高于MTHFR基因型正常者,有显著差异(P<0.05);在本研究中没有检测出CBS基因突变者。结论:MTHFR基因突变是引起血浆Hcy水平升高的主要原因。     

冠心病病人氧化修饰低密度脂蛋白的测定及临床意义

目的 :探讨氧化修饰低密度脂蛋白 (Ox LDL)对冠心病 (CHD)形成和发展的影响。方法 :CHD组 6 0例 ,对照组 5 3例。用酶标多克隆抗体夹心的方法检测血清Ox LDL含量。结果 :CHD组血清Ox LDL含量为 ( 48.6± 32 .8) μg dl。对照组( 2 5 .9± 2 2 .5 ) μg dl,两组之间Ox LDL含量存在显著性差异 (P <0 .0 0 1)。 结论 :Ox LDL和CHD有密切的关系 ,故可作为CHD病人特异性的辅助诊断指标。     

肝源性溃疡的临床观察

目的：研究乙肝后肝硬化患者消化性溃疡的临床特点及治疗转归，探讨内镜下止血及小剂量心得安对肝源性溃疡愈合的影响。方法：肝源性溃疡75例，观察其发病年龄、临床表现、溃疡部位、HP感染率、出血率及7d内止血率及溃疡愈合率等特点，随机分为治疗组37例，内镜下止血 心得安 泰胃美治疗，对照组38例，用维生素B6 泰胃美治疗；另外选单纯性消化性溃疡73例，随机对照2组36例，用维生素B6 泰胃美治疗，对照3组37例，内镜下止血 维生素B6 泰胃美治疗。结果：肝源性溃疡发病年龄较单纯性消化性溃疡晚10年，溃疡部位以复合性溃疡居多和并出血率高，内镜下止血 小剂量心得安可明显提高肝源性溃疡7d内止血率，促进肝源性溃疡愈合率，与对照组具有统计学意义(P＜0．01)。结论：肝源性溃疡难以治愈互易并出血，互以复合性溃疡多见，门静脉高压因素可能从中发挥作用，内镜下注射及喷洒止血剂及口服小剂量心得安及用制酸护肝治疗能有效止血，促进溃疡的愈合。     

北京城区居民体质指数与慢性病危险因素关系分析

对 1 995～ 1 998年营养与食品安全所老年与临床营养室在北京地区慢性病社区防治研究中积累的1 2 4 6例 2 5～ 74岁居民的部分体检资料进行分析 ,观察不同人群体质指数 (BMI)、腰围 (WC)水平与慢性疾病相关因素 血清总胆固醇 (TC)、高密度脂蛋白胆固醇 (HDL C)、甘油三酯 (TG)、收缩压 (SBP)、舒张压 (DBP)、血糖 (FBG)及与高血压、高脂血症、糖尿病的检出率的关系。结果 :该人群超重及肥胖率男性为 41 7%及1 4 6 % ,女性为 32 0 %及 2 0 4%。超重及肥胖组高血压、高脂血症、糖尿病的检出率明显高于BMI正常组。相关分析结果表明BMI、WC与TC、TG、SBP、DBP呈显著正相关 ;与HDL C、HDL C TC呈显著负相关 ,WC与FBG呈显著正相关。提示为早期预防慢性病 ,应对BMI>2 4的人群给予充分关注     

老年冠心病患者的动态心电图观察

对97例老年冠心病患者进行动态心电图观察,共检出97例患者缺血性ST段发作347阵,心率减慢时发生缺血48例(49.5％),全程无症状者75例(77.4%),缺血时有无胸痛与ST段下降程度无必然联系。     

脉冲Nd：YAG激光照射对大鼠炎症牙龈组织的作用

患实验性牙龈炎的大鼠牙龈（６例）经脉冲掺钕钇铝柘榴石激光（Ｎｄ：ＹＡＧ激光）照射后进行光镜及超微结构观察。目的在于了解低能量Ｎｄ：ＹＡＧ激光照射对牙龈炎症的治疗作用。炎症牙龈经输出能量为１．５Ｗ，脉冲数为２０ＰＰＳ的激光照射后与对照组相比较，形态学上有如下变化：上皮细胞无变性；牙龈上皮层数较炎症时减少；上皮下炎细胞浸润明显减少；上皮细胞间隙变小；上皮下结缔组织内产生大量的排列致密的胶原纤维。结果提     

Incidence of gestational trophoblastic disease in Stockholm County, 1975–1988

An epidemiological study with the aim of establishing the incidence of hydatidiform mole, persistent trophoblastic disease and choriocarcinoma in Stockholm County was performed. Based on the regional cancer registry and hospital registers, the incidence for 1975–1988 was calculated for the number of deliveries as well as the total number of pregnancies. Of the molar pregnancies, 6% were treated with chemotherapy because of invasive mole or choriocarcinoma. Non-molar choriocarcinoma occurred in 1/33,717 deliveries. Difficulties in assessing the incidence of gestational trophoblastic disease are discussed.     

Serum levels of interleukin-6 and tumour-necrosis-factor-alpha are not correlated to disease activity in patients with rheumatoid arthritis after treatment with low-dose methotrexate

Abstract. Cytokines are major mediators of inflammatory responses in rheumatoid arthritis. Some of them have been shown to correlate with the disease activity and thus are proposed to be used for monitoring patients. Therefore the effects of a low-dose therapy with methotrexate on serum concentrations of interleukin-6 (IL-6) and tumour-necrosis-factor-alpha (TNF-α) were examined in eight patients with seropositive rheumatoid arthritis. Serum levels of IL-6 and TNF-α were significantly elevated in patients compared to healthy controls. Before the onset of MTX treatment IL-6 concentrations were correlated to the c-reactive protein ( P < 0·05) but the correlation was abolished after treatment. For TNF-α no correlations neither before nor after treatment were observed. Both cytokines remained substantially elevated after MTX treatment despite a clear reduction in disease activity. Thus we suggest that one of the effects of MTX might be the inhibition of some of the actions of IL-6 and TNF-α.     

Clinical status and parasitic infection in a Wichi Aboriginal community in Salta,Argentina

In a study, carried out in 2000, of the clinical and parasitological status of a Wichi Aboriginal community living in the suburbs of Tartagal, northern Salta, Argentina, 154 individuals were screened for parasitic infections. Ninety-five faecal samples were also obtained from the same population. Ninety-three percent of the subjects were positive for 1 or more of the parasites investigated by direct test and 70.5% of them had parasitic superinfection. The most frequent helminths were Strongyloides stercoralis (50.5%) and hookworm (47.4%). We found low reinfection rates and a long reinfection period after treatment and provision of safe water and sanitation. Serum reactivity of these patients was analysed by enzyme-linked immunosorbent assay and indirect immunofluorescent assay and 22.1% of them had anti-Toxocara antibodies, 16.2% were positive for a complex antigen of Leishmania braziliensis, 29.9% were positive for a complex Trypanosoma cruzi antigen, and 17.5% were positive for a specific Trypanosoma cruzi antigen, Ag1 63136/cruzipain.