老年单纯收缩期高血压患者血脂及血浆同型半胱氨酸水平的变化

目的：研究老年单纯收缩期高血压（ISH）患者血浆同型半胱氨酸（Hcy)与胆固醇（Tc),甘油三脂（Tg)水平的变化及其相关性。方法：运用高效液相色谱仪及氧化酶法分别测定35例ISH患者,31例单纯期高血压患者,34例原发性高血压患者及30例健康对照组血浆Hcy,Tc,Tg水平,结果：（1）单纯收缩期高血压患者,舒张期高血压患者,原发性高血压患者的Tc,Tg水平均高于健康对照组,差异有显著性意义（P＜0．01）,而Hcy水平只有单纯收缩期高血压和原发性高血压患者高于健康对照组,差异有显著性意义（P＜0．01）;舒张期高血压患者的Hcy水平与健康对照组相比无显著性差异（P＞0．05）,（2）单纯收缩期高血压患者的Tc,Tg水平与舒张期高血压患者,原发性高血压患者的Tc,Tg水平相比没有显著性差异（P＞0．05）,但单纯收缩期高血压患者和原发性高血压患者,原Hcy水平却高于舒张期高血压患者,差异有显著性意义（P＜0．01）,（3）Hcy与Tc,Tg均呈正相关,相关系数分别为0．355（P＜0．01）,0．389（P＜0．01）。结论：老年ISH患者和原发性高血压患者血浆Hcy水平较舒张期高血压患者和健康正常对照组均明显增高,且血浆Hcy和Tc,Tg间有一定的相关性。     

冠心病患者血浆同型半胱氨酸水平的变化及其与血脂的关系

目的　探讨血浆同型半胱氨酸 (HCY)水平变化对冠心病 (CHD)患病的意义以及HCY与血脂的相关性。方法　分别测定 10 5例CHD患者和 32例正常对照组血浆HCY及血脂各参数水平 ,并进行比较及相关性分析。结果　CHD组的HCY、甘油三酯 (TG)、总胆固醇 (TC)水平均明显高于对照组 (P <0 .0 1) ;TC、高密度脂蛋白胆固醇 (HDL -C)、低密度脂蛋白胆固醇 (LDL -C)对HCY均无明显影响 ,而CHD组HCY水平与TG呈正相关(r=0 .0 2 1,P <0 .0 5 )。结论　HCY与CHD具有密切联系 ,HHCY是CHD患病的一个新的危险因素 ,检测血浆HCY对预防和诊治CHD具有一定临床价值。HCY与TG具有一定相关性     

血浆同型半胱氨酸与冠状动脉病变的关系

目的 :探讨血浆同型半胱氨酸 (Hcy)与冠状动脉病变及累及病变支数的关系。方法 :对121名行冠状动脉造影术的患者进行血浆Hcy、叶酸、维生素B12 的检测。其中冠心病组83人 ,非冠心病组38人 ,冠心病组又根据病变支数分为单支病变组 (25例 )、双支病变组 (35例 )、三支病变组 (23例 )。结果 :冠心病组的血浆Hcy水平为 (16 06±6 98) μmol/L ,明显高于非冠心病组(11 11±4 27) μmol/L ,P<0 001。冠心病组的单支、双支、三支病变组其血浆Hcy 均显著高于非冠心病组 ,但三者之间差异无显著性。结论 :血浆Hcy 增高是冠状动脉病变的独立危险因素 ,血浆Hcy 水平可能与累及冠状动脉支数无关。     

Evaluation of the MTHFR C677T allele and the MTHFR gene locus in a German spina bifida population

A number of recent studies have demonstrated that the occurrence and recurrence risk of neural tube defects (NTD) is reduced by folic acid supplementation before and during pregnancy. Epidemiological studies have shown low plasma folate and raised plasma homocysteine in women with spina bifida aperta (SB) children suggesting an abnormal folate metabolism. The 5,10-methylenetetrahydrofolate reductase (MTHFR) variant C677T, resulting in a decreased activity of the enzyme, has been associated with the development of NTD. Several studies demonstrated that homozygosity for the C677T mutation occurs at a higher frequency in patients with SB phenotype than in control individuals. The SB risk is strongest if both the mother and her child have the mutation in the homozygous state. In the present study we compared the frequency of the C- and T-alleles in healthy German individuals (n=153) with German SB patients (n=137). Our study groups reveal no significant difference in C/T-allele frequencies and genotype distributions. A family based association study, the transmission disequilibrium test, confirms the absence of an association between T-allele and SB. In 9 of 40 families we were able to exclude linkage to the MTHFR locus (1p36.3) employing different inheritance models. Conclusion Our data show no evidence for an association between the C677T mutation and the occurrence of the SB phenotype. Therefore we cannot support the hypothesis that the MTHFR variant does account for a significant genetic predisposition to the SB phenotype in the studied German patients. Received: 11 June 1997 / Accepted in revised form: 3 November 1997     

同型半胱氨酸在脑部疾病中的诊断价值

目的:探讨同型半胱氨酸在脑部疾病中的诊断价值。方法:用酶法检测483例不同脑部疾病患者和100例健康人员的血清同型半胱氨酸,进行分析比较。结果:各疾病组的Hcy水平和阳性率均明显高于对照组(P0.001),而各组之间Hcy水平和阳性率差异却无统计学意义(P0.05)。结论:高Hcy存在于脑部多种病变中,而非只是脑血管病的危险因素。     

血清N端脑钠肽前体及同型半胱氨酸在充血性心力衰竭患者中的检测意义

目的探讨血清N端脑钠肽前体及同型半胱氨酸在充血性心力衰竭患者中的检测意义。方法选择本院充血性心力衰竭患者130例,根据心功能评定分级分为A组、B组和C组。同时选择同期体检健康者共40名,作为对照组。测定血清N端脑钠肽前体水平和血清同型半胱氨酸水平。结果 A组、B组和C组血清N端脑钠肽前体及同型半胱氨酸水平均显著高于对照组,差异有统计学意义（P〈0.05）;C组血清N端脑钠肽前体及同型半胱氨酸水平显著高于B组,差异有统计学意义（P〈0.05）;B组血清N端脑钠肽前体及同型半胱氨酸水平显著高于A组,差异有统计学意义（P〈0.05）。充血性心力衰竭患者治疗后血清N端脑钠肽前体和同型半胱氨酸水平显著低于治疗前,差异有统计学意义（P〈0.05）。结论血清N端脑钠肽前体及同型半胱氨酸水平检测有助于诊断充血性心力衰竭,同时有助于评估心力衰竭严重程度,有助于对近期疗效进行评价。     

产后抑郁与分娩前后血清同型半胱氨酸、雌二醇水平变化的相关性分析

目的分析产后抑郁与分娩前后血清同型半胱氨酸(Hcy)、雌二醇(E2)水平变化的相关性。方法选取我院2018年7月至2019年7月收治的120例初产妇,在分娩后7天时采用爱丁堡产后抑郁量表(EPDS)评估产妇的抑郁状态,根据评估结果分为产后抑郁组(n=15)和非抑郁组(n=105)。比较两组产妇的一般资料及分娩前、分娩后7天的血清Hcy、 E2水平,分析EPDS评分与血清Hcy、 E2水平的相关性。结果 120例产妇中,有15例(12.5%)发生产后抑郁。产后抑郁组的受教育程度显著低于非抑郁组(P <0.05)。分娩前,两组的血清Hcy、 E2水平比较无统计学差异(P>0.05);分娩后7天,产后抑郁组的血清Hcy水平显著高于非抑郁组,血清E2水平显著低于非抑郁组(P均<0.05)。EPDS评分与分娩后血清Hcy水平呈正相关(r=0.233, P <0.05),与分娩后血清E2水平呈负相关(r=-0.691, P <0.05)。结论分娩后血清Hcy水平升高、 E2水平降低可能是产后抑郁的危险因素,检测分娩后Hcy、 E2水平有助于产后抑郁症的预测。     

叶酸 、维生素 B6、维生素 B12 联合干预对H型高血压患者血压变异性与动脉弹性的长期影响

目的 探讨叶酸 、维生素B6、维生素B12联合干预治疗对H型高血压患者血浆同型半胱氨酸（homocysteine，Hcy）水平、血管内皮功能及随访期间血压变异性的影响。方法 120例轻、中度原发性高血压的患者采用随机数字法分为两组，即叶酸和维生素B6、B12联合干预组（60例）和对照组（60例）。治疗前（基线水平）及治疗后1个月测定患者血浆Hcy水平及血管内皮的功能的检测，并对所有入组患者随访1年，记录其血压水平。结果 叶酸、维生素B6、B12联合干预组治疗1个月后，Hcy水平较对照组［（19.44±2.91）μmol/L比（23.05±2.91）μmol/L，P<0.05］及治疗前［（19.44±2.91）μmol/L比（24.03±3.28）μmol/L，P<0.05］均有明显降低；踝肱脉搏波传导速度（baPWV）较治疗前变化不明显［（1560.9±253.8）cmPs比（1503.9±252.1）cmPs，P＞0.05］；1年随访结束后，干预组平均收缩压水平较对照组明显下降，差异有统计学意义［（124.4±19.8）mm Hg比（131.0±26.7）mm Hg，P<0.05］，而且干预组收缩压的变异性小于对照组，差异有统计学意义［（7.82±5.19）比（9.60±4.87），P<0.05］。舒张压的变化在组间比较差异无统计学意义（P>0.05）。结论 叶酸、维生素B6、B12 联合干预治疗可降低高血压患者血浆Hcy水平，而且可以改善患者不良的血管内皮功能损害，降低血压变异性。     

Spectrophotometric determination of the tannin contents of various Turkish black tea,beer and wine samples

This study reports tannin contents of various tea (19), beer (6) and wine (6) samples, produced or sold in Turkey under different brand names. Determinations were carried out by employing a previously reported UV-vis spectrophotometric method. The standard addition procedure was also compared to the direct determination procedure and found to be more reliable. The tannin contents of hot water extracts of tea, tea bag and herbal tea samples ranged between 6.20-8.33, 8.03-6.59 and 2.76-6.54 percent (w/w) respectively. Tannin contents of beer and wine samples determined without extraction were found ranging between 66.36-77.26 and 67.18-107.62 μ g/mL respectively. Iron contents of analysed wine samples were also found ranging between 0.36 and 10.33 ppm by AAS and no relation is found between tannin and iron contents.