妊娠期高血压疾病及妊娠期糖尿病患者的血浆同型半胱氨酸测定及临床意义的研究

目的对高同型半胱氨酸血浆与妊娠期高血压疾病、糖尿病发病的相关性进行探讨。方法选择2011年1月至2013年1月,我院检查患有妊娠期高血压（HDCP）患者113例,妊娠期糖尿病（GDM）患者87例以及正常怀孕的孕妇100例。对三组妇女血浆中同型半胱氨酸的浓度进行检测,调查不良妊娠反应。结果血浆中同型半胱氨酸测量的浓度在妊娠期高血压疾病组、妊娠期糖尿病组、正常组存在差异,P〈0．05;跟踪三组的妊娠不良结局,差异具有统计意义,P〈0．05。结论HDCP与GDM组患者的血浆同型半胱氨酸浓度上升可能与胰岛素抵抗相关,但这并不是导致妊娠不良后果的唯一因素。     

Review of Dextromethorphan Administration in 18 Patients With Subacute Methotrexate Central Nervous System Toxicity

BackgroundThe pathogenesis of methotrexate central nervous system toxicity is multifactorial, but it is likely related to central nervous system folate homeostasis. The use of folinate rescue has been described to decrease toxicity in patients who had received intrathecal methotrexate. It has also been described in previous studies that there is an elevated level of homocysteine in plasma and cerebrospinal fluid of patients who had received intrathecal methotrexate. Homocysteine is an N-methyl-d-aspartate receptor agonist. The use of dextromethorphan, noncompetitive N-methyl-d-aspartate receptor receptor antagonist, has been used in the treatment of sudden onset of neurological dysfunction associated with methotrexate toxicity. It remains unclear whether the dextromethorphan impacted the speed of recovery, and its use remains controversial. This study reviews the use of dextromethorphan in the setting of subacute methotrexate central nervous system toxicity.MethodsCharts of 18 patients who had sudden onset of neurological impairments after receiving methotrexate and were treated with dextromethorphan were reviewed.ResultThe use of dextromethorphan in most of our patients resulted in symptomatic improvement. In this patient population, earlier administration of dextromethorphan resulted in faster improvement of impairments and led to prevention of recurrence of seizure activity induced by methotrexate central nervous system toxicity.ConclusionsOur study provides support for the use of dextromethorphan in patients with subacute methotrexate central nervous system toxicity.     

老年冠心病患者血清Hcy和UA水平与冠脉病变严重程度的相关性

目的探讨老年冠心病患者血清同型半胱氨酸(Hcy)、尿酸(UA)水平与冠脉病变严重程度的相关性。方法选取2016年1月20日至2019年1月20日本院收治的280例老年冠心病患者作为研究对象,根据Gensini评分的不同将患者分为高分数组(>60分,90例)、中分数组(30~60分,98例)及低分数组(<30分,92例),并选取120例同时期健康体检者设为正常组。比较不同Gensini评分及病变支数患者与正常组的Hcy及UA水平,以及分析Gensini评分与Hcy、UA水平的相关性。结果高分数组的Hcy、UA水平高于中分数组、低分数组、正常组,且中分数组高于低分数组及正常组,低分数组高于正常组,差异具有统计学意义(P<0.05)。280例患者中三支病变61例、双支病变89例、单支病变130例。三支病变组的Hcy、UA高于双支病变组、单支病变组、正常组,且双支病变组高于单支病变组、正常组,单支病变组高于正常组,差异具有统计学意义(P<0.05)。Hcy、UA水平为Gensini评分的相关因素(P<0.05)。结论老年冠心病患者的Hcy、UA水平升高,其冠脉病变的程度会相应加重。通过对Hcy、UA水平进行监测可一定程度上明确冠心病患者的病情,为后续疾病的预防、治疗提供有效依据,值得临床推广应用。     

从治未病探讨高同型半胱氨酸血症中医体质管理

目的:观察四川省自贡地区高同型半胱氨酸血症(homocysteine,HCY)人群的中医体质分布、中医体质与心血管危险因素的相关性,为建立治未病同健康管理相结合的模式干预高同型半胱氨酸血症提供依据。方法:通过调查514例高同型半胱氨酸血症人群填写的《中医体质分类与判定表》的情况,搜集基本信息及实验室检查,探讨中医体质分布和危险因素的相关性。结果:514例高HCY血症人群中,主要以痰湿质(28.2%)、血瘀质(17.1%)、湿热质(14.8%)、阴虚质(12.3%)为主,男性体质分布以痰湿质(32.2%)、血瘀质(16.9%)、湿热质(14.2%)、气虚质(11.2%)为主,女性体质分布以痰湿质(23.9%)、血瘀质(17.4%)、湿热质(15.4%)、阴虚质(14.6%)为主。痰湿质、血瘀质、湿热质、阴虚质的年龄、舒张压、三酰甘油水平比较,差异有统计学意义(P<0.05),其中,痰湿质年龄水平高于其他3种体质,湿热质年龄水平最低(P<0.05);血瘀质舒张压高于其他3种体质(P<0.05),湿热质三酰甘油含量高于其他3种体质(P<0.05)。痰湿质、血瘀质高HCY人群与饮酒有显著相关性(P<0.05),湿热质高HCY人群与高血压有显著相关性(P<0.05),痰湿质、阴虚质高HCY人群与血脂异常有显著相关性(P<0.05)。结论:痰湿质、血瘀质、湿热质、阴虚质是高同型半胱氨酸血症的主要体质,男女体质分布有差异,不同体质相关的危险因素不同。     

CHD患者血浆Hcy含量变化及临床意义

目的：探讨冠状动脉粥样硬化性心脏病（CHD）患者的血浆同型半胱氨酸（Hcy）浓度与疾病相关性及临床价值。方法：用FHA测定52例CHD患者及42例同年龄的健康者,进行对照。结果：CHD组患者的Hcy值明显高于正常对照组P〈0．01。结论：对高危CHD人群进行定期检测Hcy,有利于CHD的预防。     

Impact of KCNJ11 rs5219, UCP2 rs659366, and MTHFR rs1801133 Polymorphisms on Type 2 Diabetes: A Cross-Sectional Study

OBJECTIVEType 2 diabetes (T2D) is a multifactorial disease. Its occurrence and prognosis are affected by many genes, including KCNJ11, UCP2, and MTHFR. The objective of this study was to investigate the distribution of various variants of these genes and evaluate their contribution to the outcome of T2D.METHODS80 females with T2D and class I-II obesity in the age of 40-65 years old underwent a genetic study, a biochemical blood test, and indirect calorimetry.RESULTSCarriers of C/T and T/T genotypes of the MTHFR gene had higher levels of cholesterol and triglycerides and lower levels of vitamin B6 and folate. The T/T genotype of the UCP2 gene was associated with higher levels of glycated hemoglobin, pre- and postprandial glycemia and lipid oxidation rate, lower carbohydrate oxidation, and lower serum vitamin C levels.CONCLUSIONSGenotyping UCP2 and probably KCNJ11 may help to select the optimal antidiabetic therapy and improve disease prognosis, whereas the MTHFR gene may determine the need to monitor group B vitamin status and the risk of dyslipidemia.     

One-Carbon Metabolism in Alzheimer’s Disease and Parkinson’s Disease Brain Tissue

Disruptions in one-carbon metabolism and elevated homocysteine have been previously implicated in the development of dementia associated with Alzheimer’s disease (AD) and Parkinson’s disease (PD). Moreover, a PD diagnosis itself carries substantial risk for the development of dementia. This is the first study that explores alterations in one-carbon metabolism in AD and PD directly in the human brain frontal cortex, the primary center of cognition. Applying targeted liquid chromatography–tandem mass spectrometry (LC-MS/MS), we analyzed post-mortem samples obtained from 136 subjects (35 AD, 65 PD, 36 controls). We found changes in one-carbon metabolites that indicate inefficient activation of cystathionine β-synthase (CBS) in AD and PD subjects with dementia, the latter seemingly accompanied by a restricted re-methylation flow. Levodopa–carbidopa is known to reduce available vitamin B6, which would explain the hindered CBS activity. We present evidence of temporary non-protein-bound homocysteine accumulation upon levodopa intake in the brain of PD subjects with dementia but not in non-demented PD subjects. Importantly, this homocysteine elevation is not related to levodopa dosage, disease progression, or histopathological markers but exclusively to the dementia status. We hypothesize that this levodopa-induced effect is a direct cause of dementia in PD in susceptible subjects with reduced re-methylation capacity. Furthermore, we show that betaine best correlates with cognitive score even among PD subjects alone and discuss nutritional recommendations to improve one-carbon metabolism function.     

Association of methylenetetrahydrofolate reductase C677T polymorphism with the pre-eclampsia risk in Hakka pregnant women in Southern China

Abstract

The aim of this study is to clarify the possible association between methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and pre-eclampsia in Hakka pregnant women in southern China. Pre-eclampsia and normal pregnant women were consecutively collected and MTHFR C677T genotypes were determined by the DNA sequencing method. One hundred and thirteen pre-eclampsia patients were CC homozygote (113 of 191, 59.2%), 68 of 191 (35.6%) were CT heterozygote, and 10 of 191 (5.2%) were TT homozygote, with the frequency of the T allele equal to 0.77. This is in comparison with the normal control group where 106 of 202 (52.5%) were CC homozygote, 83 of 202 (41.1%) were CT heterozygote, and 13 of 202 (6.4%) were TT homozygote, with the frequency of the T allele equal to 0.27. No statistically significant differences were observed in genotype or allele frequencies between the pre-eclampsia and normal control for the C677T polymorphism of MTHFR gene (p?>?.05). The findings of this study suggest that polymorphisms of MTHFR C677T genes were not associated with pre-eclampsia in Hakka pregnant women from southern China, but additional studies are necessary to explore the mechanisms involving it.     

尿阿尔茨海默病相关神经丝蛋白联合血浆同型半胱氨酸测定在阿尔茨海默病诊断中的研究

目的 探讨尿阿尔茨海默病（AD）相关神经丝蛋白（AD7c-NTP）含量测定联合血浆同型半胱氨酸（Hcy）在AD诊断中的价值。方法 纳入轻度阿尔茨海默病（CDR=1分）及中重度阿尔茨海默病患（CDR ≥ 2分）者各40例,并选择健康体检志愿者40例为对照组,采用酶联免疫吸附测定法（ELISA）检测尿液中AD7c-NTP含量,采用循环酶法测定血浆Hcy的含量,通过绘制ROC曲线,分析二者联合检测对AD的诊断准确性。结果 3组受试者尿AD7c-NTP含量比较,差异有统计学意义（P<0.05）;组间比较差异均有统计学意义（P<0.05）。根据ROC曲线,当尿AD7c-NTP为1.745 ng/mL时,对应的灵敏度和特异度之和最大。3组受试者血浆Hcy的含量比较,差异有统计学意义（P<0.05）;组间比较差异均有统计学意义（P<0.01）。根据ROC曲线,当血浆HCY为15.05 μmol/L时,对应的灵敏度和特异度之和最大。当二者进行联合检测时,ROC曲线下面积为0.891,大于各项单独检测。结论 AD患者尿AD7c-NTP含量及血浆HCY含量均增高;尿液AD7c-NTP含量及血浆HCY含量可作为辅助AD诊断的生物标记物;二者联合检测可提高AD诊断的准确性。