Study of Serum Homocysteine, Folic Acid and Vitamin B12 in Patients with Preeclampsia

The present study was carried out to evaluate the occurrence of association between homocysteine, folic acid and vitamin B(12) in patients with preeclampsia. Fifty preeclamptic patients from gynecology ward were studied for estimation of serum homocysteine, folic acid and vitamin B(12) over a period of October 2007 to June 2010. Serum homocysteine and folic acid, and vitamin B(12) were determined by means of Immulite 1000 analyzer. The statistical analysis of study group of preeclampsia compared with normotensive control group, showed significant alterations in serum homocysteine, folic acid and vitamin B(12) concentrations in preeclampsia. Inverse association between serum homocysteine and folic acid, and vitamin B(12) levels were observed in preeclampsia. The present study found hyperhomocysteinemia and deficiency of folic acid and vitamin B(12) along with increased blood pressure as a risk factor for cardiovascular disease (CVD) in preeclampsia.     

冠心病患者血浆同型半胱氨酸变化及叶酸的干预治疗

目的 了解血浆同型半胱氨酸(Homocysteine，Hcy)、叶酸和维生素(Vit)B12水平与冠心病的关系；观察叶酸干预治疗高Hcy血症的疗效．方法 经冠脉造影确诊的冠心病患者97例、亚冠心病患者58例及完全正常3l例，用高效液相色谱法测血浆Hcy水平，用放免法测血浆叶酸和VitB12浓度．其中高Hcy血症病人每天服用叶酸5mg，观察4周和8周后血浆Hcy水平变化．结果 冠心病和亚冠心病患者血浆Hcy水平明显高于正常人，叶酸和VitB12水平则明显下降；冠心病患者冠脉病变支数越多，血浆Hcy升高和叶酸、VitB12下降越明显；叶酸治疗高Hcy血症患者4周和8周，分别使血浆Hcy水平下降12．5％和38．5％．结论 冠心病和亚冠心病患者血浆Hcy水平明显升高，高Hcy血症是冠心病的危险因素之一．血浆Hcy水平变化与冠脉病变程度正相关．叶酸干预治疗可使高Hcy血症患者血浆Hcy浓度明显降低．     

Detection of Bone Metastases in Breast Cancer (BC) Patients by Serum Tartrate-Resistant Acid Phosphatase 5b (TRACP 5b), a Bone Resorption Marker and Serum Alkaline Phosphatase (ALP), a Bone Formation Marker,in Lieu of Whole Body Skeletal Scintigraphy with Technetium99m MDP

Bone metastases are a serious problem in patients with advanced cancer disease and their presence usually signifies serious morbidity prior to the patient’s death. In breast cancer patients the incidence of bone metastasis is observed to be very high at 70 %, as seen during post-mortem examination. Bone metastasis is difficult to diagnose, treat or follow clinically without radiological tools. This study was designed to evaluate the utility of a novel bone resorption marker–serum tartrate-resistant acid phosphatase 5b (TRACP5b) and the bone formation marker such as serum total alkaline phosphatase (ALP), in comparison with whole body skeletal scintigraphy with Technetium99m MDP for the diagnosis of bone metastases (BM) in breast cancer (BC) patients. This study is intended to help the clinician to diagnose bone metastasis without resorting to radiological tools, as they are not cost effective and carry the risk of radiation. Experimental design: Four groups of samples were analysed. 1st group consists 52 normal female (cancer free women), 2nd group consists 38 BC patients without bone metastasis, 3rd group consists 27 breast cancer patients with limited bone metastasis (3 or less than 3 skeletal lesions) and 4th group consists 35 breast cancer patients with extensive bone metastasis (4 or more than 4 skeletal lesions), conformed by whole body skeletal scintigraphy with Technetium99m MDP. One way ANOVA was used to compare serum TRACP5b and serum ALP among these groups. Both serum TRACP5b and serum ALP are not markedly elevated in limited bone metastasis but are strongly elevated in extensive bone metastasis (p < 0.0001). As seen in this study the biochemical bone resorption marker, serum TRACP5b, abnormally increased in extensive bone metastasis of breast cancer patients and can be used as a specific marker for bone metastasis in lieu of radiological tools.     

微柱法及果糖胺法测定糖尿病患者HbA_(1c)、HbA_1及Gpp的比较研究

采用Trivelli等报道的Bio-Rex70阳离子交换树脂微柱层析法和Roger等报道的果糖胺法(两法均作了适当修改),分别对73例糖尿病患者及61例正常人进行了HbA_(1c)、HbA_1及糖基化血浆蛋白(Gpp)的测定.结果显示患者与正常人之间HbA_(1c)、HbA_1、Gpp均值有非常显著性差别.患者空腹血糖均值与HbA_(1c)、HbA_1、Gpp均值之间均有极显著的相关性.患者HbA_(1c)与HbA_1之间相关系数有极显著意义.证明HbA_(1c)、HbA_1与Gpp均可作为糖尿病控制较准确的客观指标.作者在提高微柱法分离度的关键问题上作了改进,找出了恰当的洗脱液Ⅰ与Ⅱ的Na~+浓度,分别为0.020mol/L与0.070mol/L.分离HbA_(1a+b)与HbA_(1c)结果尚称满意,柱间CV分别为3.1％与2.2％.在降低洗脱液Ⅰ、Ⅱ、Ⅲ中剧毒物质氰化钾的浓度问题上也作了研究,找出了较文献报道低2.5倍的氰化钾浓度,即由0.010mol/L降低到0.004mol/L.在果糖胺法中,采用5min与15min两次比色,用10％冰醋酸终止反应,提高了此法的精密度与重复性,批内CV为2.3％,批间CV为2.7％.