目的 研究同型半胱氨酸轉硫途徑、維生素B6及內源性硫化氫在慢性阻塞性肺疾病急性加重期(AECOPD)中的作用。 方法 2010年2月-4月間篩選AECOPD患者16例和健康志愿者(對照組)13例,測定AECOPD患者加重期、緩解期及對照組的肺功能、血清硫化氫(H2S)、丙二醛(MDA)、葉酸、維生素B12、C反應蛋白、白介素6、血漿同型半胱氨酸、胱硫醚、半胱氨酸和維生素B6的濃度。計算半胱氨酸轉化率(半胱氨酸濃度/胱硫醚濃度)與胱硫醚轉化率(胱硫醚濃度/同型半胱氨酸濃度)參與分析。 結果 ① 加重期血清MDA水平[(7.3 ± 5.1)nmol/L ]比緩解期[(3.0 ± 1.4)nmol/L ]和對照組[(3.0 ± 2.2)nmol/L ]均升高(P<0.01);血清MDA水平與第1秒用力呼氣容積/用力肺活量(FEV1/FVC)、第1秒用力呼氣容積占預計值百分比(FEV1%預計值)呈負相關。② 加重期血清H2S水平與血漿維生素B6水平較緩解期與對照組降低(P<0.01);緩解期血清H2S水平[(47.2 ±5.1) μmol/L ]高于對照組[(38.8 ± 2.1) μmol/L ],P<0.01;血清H2S水平、血漿維生素B6水平均與FEV1%預計值呈正相關(r=0.651、0.680,P<0.01),均與血清MDA水平呈負相關(r=-0.334、-0.448,P<0.05)。③ 加重期半胱氨酸轉化率(3.97 ± 2.41)低于緩解期(5.92 ± 2.18)與對照組(6.14 ± 3.15)差異有統計學意義(P<0.05);而胱硫醚轉化率則相反。④ 葉酸與維生素B12水平各組間均無差異。 結論 提高AECOPD患者維生素B6及H2S濃度可能能促使AECOPD患者向穩定狀態轉歸,減輕氧化應激損傷。維生素B6與H2S可能成為AECOPD患者的一個新的治療點。Objective To study the roles of homocysteine (Hcy) transsulfuration pathway, Vitamin B6 and endogenous hydrogen sulfide in treating patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). Methods Sixteen AECOPD patients and 13 healthy controls (Control group) from February to April 2010 were recruited in this study. Lung function, serum hydrogen sulfide (H2S), malondialdehyde (MDA), folate, vitamin B12, C-reactive protein (CRP), interleukin-6 (IL-6), Hcy, cystathionine, cystein (Cys) and vitamin B6 were all measured for all the patients in the acute exacerbation period and alleviation period and healthy controls. The conversion rate of Cys (expressed as Cys/cystathionine) and the conversion rate of cystathionine (expressed as cystathionine/Hcy) were calculated for analysis. Results Serum MDA level for patients in the acute exacerbation period (AE period) [(7.3 ± 5.1) nmol/L] was significantly higher than that in the alleviation period [(3.0 ± 1.4) nmol/L] and in the healthy controls [(3.0 ± 2.2) nmol/L] (P < 0.01). Serum MDA level was negatively correlated with percentage of FEV1 in predicted FEV1 (FEV1% pred) and FEV1/FVC. Serum H2S level and plasma vitamin B6 level for patients in the AE period were significantly lower than those in the alleviation period and in the healthy controls (P < 0.01), and serum H2S level was significantly higher in the alleviation period [(47.2 ± 5.1) μmol/L] than in the controls [(38.8 ± 2.1) μmol/L] (P < 0.01). Both serum H2S and plasma vitamin B6 levels were correlated positively with FEV1% pred for patients in the AE period and healthy controls (r=0.651, 0.680; P < 0.01), but negatively correlated with serum MDA level (r=-0.334, -0.448; P < 0.05). The conversion rate of Cys for patients in the AE period (3.97 ± 2.41) was significantly lower than that in the alleviation period (5.92 ± 2.18) and the control group (6.14 ± 3.15) (P < 0.05), but the conversion rate of cystathionine was just the opposite (P < 0.05). There were no significant differences in the levels of serum folate and vitamin B12 among the three groups. Conclusion Raising the Vitamin B6 and H2S level may facilitate stabilizing of conditions in patients with AECOPD and reduce oxidative stress. Therefore, it may become a new treatment method for AECOPD.
摘要:目的: 探討動脈硬化閉塞癥(ASO)和靜脈血栓形成(VT)患者同型半胱氨酸(Hcy)變化。 方法 :通過循環酶法對34例非動脈硬化閉塞癥(ASO)和靜脈血栓形成(VT)患者(對照組),30例動脈硬化閉塞癥(ASO)患者和26例靜脈血栓形成(VT)患者血液中Hcy進行測定。 結果 :循環酶法測定HCY的批內平均變異系數為2.23%,批間平均變異系數為1.59%。34例對照組,〖WTBX〗t =1135,〖WTBX〗P =0266gt;005;動脈硬化閉塞癥(ASO)組Hcy含量明顯高于對照組(〖WTBX〗P lt;O.05),靜脈血栓形成(VT)組Hcy含量高于對照組(〖WTBX〗P lt;0.O5)。 結論 :高同型半胱氨酸血癥可能是動脈硬化閉塞癥(ASO)和靜脈血栓形成(VT)及復發的致病因素。可將同型半胱氨酸作為動脈硬化閉塞癥(ASO)和靜脈血栓形成(VT)及復發的重要指標。Abstract: Objective: TO syudy the changes of the Homocysteine about Atherosclerosis obliterans and Venous thrombosis patients. Methods : To measure the Hcy in the blood of 34 healthy cases both non ASO and non VT(the comparison group),30 cases of ASO patients and 26 cases of VT patients respectively by enzymatic cycling assay。〖WTHZ〗Results :The average variation coefficient of Hcy within the groups was 223% and among the groups was 159% measured by enzymatic cycling assay.In the 34 cases of comparison group,t=1135,P=0266gt;005,The content of Hcy in the blood of ASO patients group were significantly higher than the comparision group (Plt;005),and the content of Hcy in the blood of VT patients group were also higher than the comparison group (Plt;005). Conclusion : Hyper Hcy may be the pathogenic diathesis to form or to recrudesce ASO and VT.So we can treat Hcy as the significant index to form or to recrudesce ASO and VT.