期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
孕妇血清L-精氨酸水平检测对妊高症的预测价值分析 被引量:5
1
作者 汪海瑛 杨金光 李红霞 《现代检验医学杂志》 CAS 2017年第4期52-56,共5页
目的评估血清L-精氨酸的浓度在预测妊娠期高血压症(pregnancy induced hypertension,PIH)发展中是否起到作用,分析其作为临床预测指标的有效性。方法研究共纳入186例妊娠期孕妇,出现妊娠期高血压症(PIH)的孕妇为实验组,健康孕妇为对照组... 目的评估血清L-精氨酸的浓度在预测妊娠期高血压症(pregnancy induced hypertension,PIH)发展中是否起到作用,分析其作为临床预测指标的有效性。方法研究共纳入186例妊娠期孕妇,出现妊娠期高血压症(PIH)的孕妇为实验组,健康孕妇为对照组,对其进行回顾性调查研究,对比健康孕妇和妊娠期高血压症孕妇(FPIH)在妊娠期不同阶段血清L-精氨酸以及脐带血血清L-精氨酸的浓度,分析血清L-精氨酸和脐带血血清L-精氨酸在妊娠期高血压发展中的诊断效能。结果实验组和对照组受试者在年龄(X^2=2.426,P=0.119;t=1.218,P=0.229)和妊娠前吸烟(X^2=2.088,P=0.148)方面差异无统计学意义,但两组患者的BMI(X^2=8.772,P=0.003)和孕产次(X^2=6.083,P=0.014)差异有统计学意义。两组受试者妊娠不同阶段的血清L-精氨酸的浓度差异无统计学意义,且脐带血血清L-精氨酸的浓度差异也无统计学意义。孕产次不同的受试者,脐带血血清L-精氨酸的浓度差异有统计学意义,年龄,BMI和以及是否吸烟等特征不同的受试者,血清L-精氨酸浓度和脐带血血清L-精氨酸浓度无显著差异。血清L-精氨酸浓度和脐带血血清L-精氨酸浓度的ROC曲线分析结果显示,其对妊娠期高血压的诊断效能较低。结论妊娠期孕妇L-精氨酸水平与PIH的发展与BMJ和孕产次存在相关性。但由于样本量限制,L-精氨酸对PIH的诊断效能分析还需要更进一步研究确定。 展开更多
关键词 妊高症 血清l精氨酸 妊娠期 ROC曲线
下载PDF
L-arginine administration ameliorates serum and pulmonary cytokine response after gut ischemia-reperfusion in immature rats 被引量:6
2
作者 Ting-LiangFu Wen-TongZhang +3 位作者 LanZhang FengWang YongGao MingXu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第7期1070-1072,共3页
AIM: Small intestinal ischemia-reperfusion (IR) has been demonstrated to result in both local mucosal injury and systemic injuries. The exact role of nitric oxide (NO) in intestinal IR is unclear. We propose that NO a... AIM: Small intestinal ischemia-reperfusion (IR) has been demonstrated to result in both local mucosal injury and systemic injuries. The exact role of nitric oxide (NO) in intestinal IR is unclear. We propose that NO and some other cytokines change in the reperfusion period and these changes are associated with lung injury. The aim of this study was to determine the effect of supplementing NO substrate, L-arginine (L-arg), on serum and pulmonary cytokine production during small intestinal IR in immature rats. METHODS: Immature rats underwent 60 min. of superior mesenteric artery occlusion followed by 90 min of reperfusion. L-arg (250 mg/kg) was given intravenously to the experimental group (IR+L-arg) which received L-arg after 45 min of intestinal ischemia. Serum and lung endothelin-1 (ET-1), NO, malondialdehyde (MDA), and tumor necrosis factor a (TNFα) were measured. Sham operation (SHAM) and intestinal IR (IR) groups were performed as control. The lavage fluid of the lung was collected by bronchoalveolar lavage (BAL) and white blood cells and polymorphonuclear cells (PMNs) were immediately counted to identify lung damage. RESULTS: When L-arg was given during small intestinal IR, serum NO concentration increased significantly in IR+L-arg group (162.17±42.93 μmol/L) when compared with IR group (87.57±23.17 μmol/L, t=3.190, P= 0.008 <0.01). Serum MDA reduced significantly in IR+L-arg group (8.93±1.50 nmol/L) when compared with SHAM (23.78±7.81 nmol/L, t= 3.243, P= 0.007<0.01) and IR (25.54±9.32 nmol/L, t= 3.421, P= 0.006<0.01). ET-1 level in lung tissues was significantly lower in IR+L-arg group (13.81±7.84 pg/mL) than that in SHAM (35.52±10.82 pg/mL, t= 2,571, P= 0,03<0.05) and IR (50.83±22.05 pg/mL, t= 3.025, P= 0.009<0.01) groups. MDA contents in lung tissues were significantly lower in IR+L-arg group (10.73±1.99 nmol/L) than in SHAM (16.62±2.28 nmol/L, t= 3.280, P = 0.007<0.01) and IR (21.90±4.82 nmol/L, t= 3.322, P= 0.007<0.01) groups. Serum and lung TNFα concentrations were not significantly different in three groups. NO contents in lung homogenates and white blood cell counts in BAL had no significant difference in three groups; but the percentage of PMNs in BAL was 13.50±8.92, 33.20±16.59, and 22.50±6.09 in SHAM, IR, and IR+L-arg groups, respectively. CONCLUSION: Small intestinal IR induced increases of pulmonary neutrophil infiltration in immature rats. Neutrophil infiltration in lung tissues was reduced by L-arg administration but remained higher than in SHAM group. L-arg administration during intestinal IR enhances serum NO production, reduces serum MDA and lung ET-1 and MDA levels, resulting in the improvement of systemic endothelial function. L-arg supplementation before reperfusion may act as a useful clinical adjunct in the management of intestinal IR, thus preventing the development of adult respiratory distress syndrome, even multiple organ dysfunction syndrome (MODS). 展开更多
关键词 INTESTINE ISCHEMIA-REPERFUSION Nitric oxide l-ARGININE Rat
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部