血清Hcy、IGFBP-1联合预测多囊卵巢综合征患者孕早期自然流产的价值

目的探讨血清同型半胱氨酸(Hcy)、胰岛素样生长因子结合蛋白-1(IGFBP-1)联合检测对多囊卵巢综合征患者孕早期自然流产的预测价值。方法选取2018年3月—2020年5月行促排卵治疗并成功临床妊娠的多囊卵巢综合征165例,检测血清Hcy、IGFBP-1水平。根据孕早期自然流产发生情况分为孕早期自然流产组与未自然流产组,比较两组妊娠前一次促排卵后血清Hcy、IGFBP-1水平;多囊卵巢综合征患者孕早期自然流产的危险因素采用多因素Logistic回归分析,并采用受试者工作特征(ROC)曲线分析血清Hcy、IGFBP-1水平单项及联合检测对多囊卵巢综合征患者孕早期自然流产的预测价值。结果患者妊娠前一次促排卵后血清Hcy水平低于入院时,血清IGFBP-1水平高于入院时(P<0.01);自然流产组妊娠前一次促排卵后血清Hcy水平高于未自然流产组,血清IGFBP-1水平低于未自然流产组(P<0.01)。孕早期自然流产的发生率为28.48%。年龄≥35岁、多囊卵巢综合征分型、空腹胰岛素水平偏高、空腹血糖水平偏高、血清睾酮水平偏高、血清叶酸水平偏低、妊娠前一次促排卵后血清Hcy水平偏高及血清IGFBP-1水平偏低均是多囊卵巢综合征患者孕早期自然流产的危险因素(P<0.01)。妊娠前一次促排卵后血清Hcy水平联合血清IGFBP-1水平预测多囊卵巢综合征患者孕早期自然流产的敏感度、ROC曲线下面积均高于单独预测(P<0.01)。结论多囊卵巢综合征孕早期自然流产患者血清Hcy水平偏高,IGFBP-1水平偏低,二者均与多囊卵巢综合征患者孕早期自然流产密切相关,并对多囊卵巢综合征患者孕早期自然流产的发生具有较好的预测价值,联合检测时的预测效能更高。     

Homocysteine might increase the risk of recurrence in patients presenting with primary cerebral infarction

Purpose: Although hyperhomocysteinemia (Hhcy) is a risk factor for cerebral infarction, its effect on recurrent cerebral infarction is less-defined. We aimed to investigate the association of Hhcy and increased risk of recurrent cerebral infarct.

Materials and methods: From 2011 to 2013, we recruited 231 primary cerebral infarct patients that were divided to a Hhcy group (n?=?105) and a control group (n?=?126) according to plasma homocysteinemia (Hcy) levels exceeding 15?μmol/L. In this prospective study, risk factors such as gender, age, blood lipid and glucose levels, history of diabetes, high blood pressure, smoking habits and plasma Hhcy levels were determined. A three-year follow-up compared differences in cerebral infarction recurrence rates. Statistical analyses identified whether plasma Hhcy levels were an independent risk factor for recurrent cerebral infarction.

Results: Triglyceride and low-density lipoprotein (LDL) levels in the Hhcy group were significantly higher than controls, and cerebral infarct recurrence rates in the Hhcy group exceeded control subject rates through the three-year follow-up (p?=?.021, p?=?.036 and p?=?.025). Cox proportional hazards modeling showed that elevated Hhcy levels (hazard ratio [HR]?=?3.062, p?<?.001), increased age (HR?=?1.069, p?<?.01), circulating triglyceride levels (HR?=?1.686, p?=?.048), and relative National Institutes of Health Stroke (NIHSS) score (HR?=?1.068, p?=?.016) were risk factors for recurrent cerebral infarction.

Conclusions: Level of Hhcy was a risk factor for recurrent cerebral infarction. Further, particular demographic and clinical outcomes including age, relative NIHSS scores, and circulating triglyceride levels were markedly associated with the occurrence of cerebral infarction.     

同型半胱氨酸对高血压患者脑卒中复发风险的影响

目的探讨高血压合并脑卒中患者的血浆同型半胱氨酸（Hcy）水平与其他危险因素对于脑卒中复发的影响。 方法分析徐州市中心医院心内科和徐州医科大学附属医院神经外科自2012年5月至2013年12月收治的1623例高血压脑卒中患者的基线资料，中位随访4.9年，根据随访事件中是否发生脑卒中分为复发组（312例）与未复发组（1311例）。Kaplan-Meier生存分析比较不同危险因素脑卒中复发率的差异，单因素与多因素Cox回归模型分析影响脑卒中复发的独立危险因素，以及危险因素之间的交互作用。 结果复发组年龄、空腹血糖、Lg Hcy的水平，以及糖尿病、房颤的患病率均高于未复发组（P<0.05）。Kaplan-Meier生存分析显示，糖尿病、房颤、年龄≥60岁、空腹血糖≥7.0 mmol/L、Hcy≥15 μmol/L的脑卒中复发率明显升高（Log-rank检验，P<0.05）。多因素Cox回归模型分析显示，高龄、Lg Hcy水平升高，以及房颤、糖尿病是脑卒中复发的独立危险因素。Lg Hcy分别与糖尿病、空腹血糖、年龄存在交互作用。 结论血浆Hcy水平升高既是高血压合并脑卒中患者卒中复发的独立危险因素，又通过与糖尿病、高龄、空腹血糖水平升高的交互作用显著增加脑卒中复发风险。     

同型半胱氨酸与高血压患者轻度认知障碍的相关性

目的 探讨同型半胱氨酸（homocysteine，Hcy）与高血压患者轻度认知障碍的相关性。 方法 回顾性纳入2017年1月-2018年2月邯郸市第一医院神经内科连续收治的原发性高血 压患者，根据其血浆Hcy水平，将患者分为单纯型高血压组（Hcy<15 μm m ol/L）与H型高血压组 （Hcy≥15 μmmol/L），采用Spearman秩相关分析Hcy与MMSE和MoCA评分的相关性，并采用Logistic回归 分析高血压患者轻度认知功能障碍的影响因素。 结果 共纳入原发性高血压患者113例，其中单纯型高血压组49例，H型高血压组64例。H型高血压 组患者的MMSE和MoCA评分均低于单纯型高血压组（分别为24.94±1.83 vs 27.96±1.54和23.45±2.47 vs 27.24±1.80，均P <0.001）。相关分析显示，Hcy水平与MMSE和MoCA评分存在负相关性（分别为r =- 0.513和r =-0.500，均P＜0.001）。多因素Logistic回归分析显示，高龄（OR 1.236，95%CI 1.124～1.361）、 H型高血压（OR 22.218，95%CI 8.243～59.654）是高血压患者轻度认知功能障碍的独立危险因素。 结论 Hcy水平升高是高血压患者轻度认知功能障碍发生的独立危险因素。     

精神分裂症患者治疗过程中Hcy水平与血糖、血脂水平的关系

目的探讨精神分裂症患者治疗过程中同型半胱氨酸水平与糖脂代谢变化的关系。方法选择2018年1～12月在我院诊断治疗的精神分裂症患者35例为研究对象,根据Hcy水平分为Hcy正常组(19例)与Hcy升高组(16例)。比较两组入组时与治疗4周后FBG、2hPBG、TG、TC水平,分析治疗后Hcy水平与FBG、2hPBG、TG、TC的相关性。结果入组时,Hcy升高组FBG、2hPBG、TG、TC水平高于Hcy正常组,差异有统计学意义(P0.05);Hcy升高组治疗4周后FBG、2hPBG、TG、TC水平高于入组时及对照组,差异有统计学意义(P0.05);治疗4周后Hcy正常组FBG、2hPBG、TG、TC水平与入组时比较差异无统计学意义(P0.05)。Hcy水平与FBG呈正相关(r=0.835)。Hcy水平与2hPBG呈正相关(r=0.857)。Hcy水平与TG呈正相关(r=0.883)。Hcy水平与TC相关(r=0.899)。结论精神分离症患者合并Hcy升高在治疗过程中对糖脂代谢影响大,在临床工作中,对精神分裂症患者治疗过程中应积极监测Hcy水平,以指导治疗,评估预后。     

泸州汉族人群MTHFR基因多态性分布及育龄妇女该基因多态性与复发性流产相关性的研究

目的了解泸州市亚甲基四氢叶酸还原酶(MTHFR)基因多态性分布情况以及该单核苷酸多态性与复发性流产的相关性。方法选取2016-2018年在西南医科大学附属医院进行MTHFR基因检测的泸州汉族人群691例为研究对象,利用PCR-微阵列基因芯片法检测其C677T单核苷酸多态性,统计得出3种基因型的频率以及等位基因频率,并与全国其他地区已报道的多态性分布特征进行比较。结果泸州汉族人群CC、CT与TT基因型频率分别为39.2%、46.7%、14.0%,T等位基因频率为37.4%。其中女性T等位基因频率为38.1%,基因分布与纬度相近地区(N25°~31°)差异无统计学意义(P>0.05),与南方的海南、惠州及北方的西安、银川、赤峰、烟台人群差异有统计学意义(P<0.05)。在泸州育龄妇女中,复发性流产与MTHFR C677T基因多态性暂未发现存在直接关联。结论泸州地区汉族人群的MTHFR基因分布具有西南地区的分布特征,T等位基因频率整体呈现出随着纬度升高而升高的趋势。     

Association between homocysteine levels and cognitive profile in Alzheimer’s Disease

BackgroundGrowing evidence suggests that hyperhomocysteinemia (HHcy) constitutes a risk factor for Alzheimer’s Disease (AD). The impact of HHcy on cognitive functions has mainly been investigated using screening neuropsychological tests that provide general, unspecific measures of cognitive level. Since an association between HHcy and temporo-mesial atrophy has been documented, we predicted that a fine-grained analysis of neuropsychological performance should show stronger Hcy effects on memory scores than on other cognitive scores.ObjectiveTo determine the influence of Hcy level on cognitive profile evaluated with specific, sensitive neuropsychological tests in a wide AD cohort.Methods323 patients with AD were enrolled in a cross-sectional study and underwent a neuropsychological examination exploring several cognitive domains (memory, language, visuoperception, visuospatial abilities, executive function, constructional praxis, ideomotor praxis). The effects of Hcy levels and other risk factors (including cholesterol, smoking habits, triglycerides, apoEε4 allele) were analysed.ResultsGeneralized Linear Model detected a significant drop in performance with increasing Hcy in 6/19 measures of cognitive functions, namely, in memory performance tasks as well as in Luria’s motor planning test, with effect sizes ranging 1.4%–2.8% (Eta-squared), partialling out effects of other predictors.ConclusionsHHcy was associated with poor performance in short and long-term spatial and verbal memory more than with other cognitive dysfunctions. These results support the hypothesis that medial temporal networks might be vulnerable to HHcy, consistently with data from neuroimaging studies suggesting a link in AD between temporal atrophy and HHcy; the effect on Luria’s motor planning task suggests further involvement of frontal structures.     

同型半胱氨酸体内代谢及调节的研究进展

同型半胱氨酸（Hcy）是体内一碳单位代谢的一个正常中间产物，Hcy的重要代谢途径就是转甲基反应，体内Hcy浓度的调节受到多种因素的影响，高Hcy浓度会导致多种疾病的发生，近年来Hcy与临床多种疾病相关性的研究更加受到重视，因此，对于Hcy体内代谢及调节因素的研究显得非常关键，本文就此进行综述。