目的探讨复合阿芬太尼时丙泊酚或环泊酚抑制人工流产术中体动反应的半数有效剂量。方法选择2021年10月-2022年4月在嘉兴市第二医院妇科手术中心行择期无痛人工流产术的患者,年龄18~35岁,体质量指数(body mass index,BMI)18~28kg/m^(2),...目的探讨复合阿芬太尼时丙泊酚或环泊酚抑制人工流产术中体动反应的半数有效剂量。方法选择2021年10月-2022年4月在嘉兴市第二医院妇科手术中心行择期无痛人工流产术的患者,年龄18~35岁,体质量指数(body mass index,BMI)18~28kg/m^(2),美国麻醉医师协会(American Society of Anesthesologists,ASA)分级为Ⅰ或Ⅱ级,胎儿年龄<10周,初次妊娠或无经阴道分娩史。采用随机数字表法将患者分为2组:丙泊酚组(P组)和环泊酚组(C组)。麻醉诱导时静脉注射阿芬太尼后给予改良序贯法设定剂量的丙泊酚或环泊酚,若术中患者出现肢体不自主运动并影响术者手术操作且需追加麻醉药物即判定为阳性反应,并且静脉追加丙泊酚或环泊酚0.5mg/kg或0.1mg/kg,下一例患者丙泊酚或环泊酚增加一个剂量梯度。反之则下一例患者丙泊酚或环泊酚减少一个剂量梯度,相邻患者的丙泊酚或环泊酚剂量梯度分别为0.5mg/kg和0.1mg/kg。采用Probit回归分析法计算丙泊酚和环泊酚的50%有效剂量(median effective dose,ED_(50))、95%有效剂量(95% effective dose,ED_(95))及相应的置信区间(confidence interval,CI)。结果P组丙泊酚抑制人工流产术中体动反应的ED_(50)(95%CI)为1.815(1.315~2.319)mg/kg,ED_(95)(95%CI)为2.901(2.368~6.447)mg/kg;C组环泊酚抑制体动反应的ED_(50)(95%CI)为0.381(0.279~0.484)mg/kg,ED_(95)(95%CI)为0.613(0.501~1.344)mg/kg,两者对应的等效比值为4.76(4.71~4.79)。结论复合阿芬太尼时环泊酚抑制人工流产术中体动反应的效价大于丙泊酚。展开更多
BACKGROUND The exact mechanism of proton pump inhibitors(PPIs)-induced hypomagnesemia(PPIH) is largely unknown. Previous studies proposed that PPIH is a consequence of intestinal Mg2+ malabsorption. However, the mecha...BACKGROUND The exact mechanism of proton pump inhibitors(PPIs)-induced hypomagnesemia(PPIH) is largely unknown. Previous studies proposed that PPIH is a consequence of intestinal Mg2+ malabsorption. However, the mechanism of PPIs-suppressed intestinal Mg2+ absorption is under debate.AIM To investigate the effect of 12-wk and 24-wk omeprazole injection on the total,transcellular, and paracellular Mg2+ absorption in the duodenum, jejunum, ileum,and colon of male Sprague-Dawley rats.METHODS The rats received 20 mg/kg·d subcutaneous omeprazole injection for 12 or 24 wk.Plasma and urinary Mg2+, Ca2+, and PO43-levels were measured. The plasma concentrations of 1α,25-dihydroxyvitamin D3(1α,25(OH)2D3), parathyroid hormone(PTH), fibroblast growth factor 23(FGF-23), epidermal growth factor(EGF), and insulin were also observed. The duodenum, jejunum, ileum, and colon of each rat were mounted onto individual modified Using chamber setups to study the rates of total, transcellular, and paracellular Mg2+ absorption simultaneously. The expression of transient receptor potential melastatin 6(TRPM6) and cyclin M4(CNNM4) in the entire intestinal tract was also measured.RESULTS Single-dose omeprazole injection significantly increased the intraluminal p H of the stomach, duodenum, and jejunum. Omeprazole injection for 12 and 24 wk induced hypomagnesemia with reduced urinary Mg2+ excretion. The plasma Ca2+ was normal but the urinary Ca2+ excretion was reduced in rats with PPIH. The plasma and urinary PO43-levels increased in PPIH rats. The levels of1α,25(OH)2D3 and FGF-23 increased, whereas that of plasma EGF decreased in the omeprazole-treated rats. The rates of the total, transcellular, and paracellular Mg2+ absorption was significantly lower in the duodenum, jejunum, ileum, and colon of the rats with PPIH than in those of the control rats. The percent suppression of Mg2+ absorption in the duodenum, jejunum, ileum, and colon of the rats with PPIH compared with the control rats was 81.86%, 70.59%, 69.45%,and 39.25%, respectively. Compared with the control rats, the rats with PPIH had significantly higher TRPM6 and CNNM4 expression levels throughout the intestinal tract.CONCLUSION Intestinal Mg2+ malabsorption was observed throughout the intestinal tract of rats with PPIH. PPIs mainly suppressed small intestinal Mg2+ absorption. Omeprazole exerted no effect on the intraluminal acidic pH in the colon. Thus, the lowest percent suppression of total Mg2+ absorption was found in the colon. The expression levels of TRPM6 and CNNM4 increased, indicating the presence of a compensatory response to Mg2+ malabsorption in rats with PPIH. Therefore, the small intestine is an appropriate segment that should be modulated to counteract PPIH.展开更多
文摘目的探讨复合阿芬太尼时丙泊酚或环泊酚抑制人工流产术中体动反应的半数有效剂量。方法选择2021年10月-2022年4月在嘉兴市第二医院妇科手术中心行择期无痛人工流产术的患者,年龄18~35岁,体质量指数(body mass index,BMI)18~28kg/m^(2),美国麻醉医师协会(American Society of Anesthesologists,ASA)分级为Ⅰ或Ⅱ级,胎儿年龄<10周,初次妊娠或无经阴道分娩史。采用随机数字表法将患者分为2组:丙泊酚组(P组)和环泊酚组(C组)。麻醉诱导时静脉注射阿芬太尼后给予改良序贯法设定剂量的丙泊酚或环泊酚,若术中患者出现肢体不自主运动并影响术者手术操作且需追加麻醉药物即判定为阳性反应,并且静脉追加丙泊酚或环泊酚0.5mg/kg或0.1mg/kg,下一例患者丙泊酚或环泊酚增加一个剂量梯度。反之则下一例患者丙泊酚或环泊酚减少一个剂量梯度,相邻患者的丙泊酚或环泊酚剂量梯度分别为0.5mg/kg和0.1mg/kg。采用Probit回归分析法计算丙泊酚和环泊酚的50%有效剂量(median effective dose,ED_(50))、95%有效剂量(95% effective dose,ED_(95))及相应的置信区间(confidence interval,CI)。结果P组丙泊酚抑制人工流产术中体动反应的ED_(50)(95%CI)为1.815(1.315~2.319)mg/kg,ED_(95)(95%CI)为2.901(2.368~6.447)mg/kg;C组环泊酚抑制体动反应的ED_(50)(95%CI)为0.381(0.279~0.484)mg/kg,ED_(95)(95%CI)为0.613(0.501~1.344)mg/kg,两者对应的等效比值为4.76(4.71~4.79)。结论复合阿芬太尼时环泊酚抑制人工流产术中体动反应的效价大于丙泊酚。
基金Burapha University through National Research Council of Thailand,No.15/2562。
文摘BACKGROUND The exact mechanism of proton pump inhibitors(PPIs)-induced hypomagnesemia(PPIH) is largely unknown. Previous studies proposed that PPIH is a consequence of intestinal Mg2+ malabsorption. However, the mechanism of PPIs-suppressed intestinal Mg2+ absorption is under debate.AIM To investigate the effect of 12-wk and 24-wk omeprazole injection on the total,transcellular, and paracellular Mg2+ absorption in the duodenum, jejunum, ileum,and colon of male Sprague-Dawley rats.METHODS The rats received 20 mg/kg·d subcutaneous omeprazole injection for 12 or 24 wk.Plasma and urinary Mg2+, Ca2+, and PO43-levels were measured. The plasma concentrations of 1α,25-dihydroxyvitamin D3(1α,25(OH)2D3), parathyroid hormone(PTH), fibroblast growth factor 23(FGF-23), epidermal growth factor(EGF), and insulin were also observed. The duodenum, jejunum, ileum, and colon of each rat were mounted onto individual modified Using chamber setups to study the rates of total, transcellular, and paracellular Mg2+ absorption simultaneously. The expression of transient receptor potential melastatin 6(TRPM6) and cyclin M4(CNNM4) in the entire intestinal tract was also measured.RESULTS Single-dose omeprazole injection significantly increased the intraluminal p H of the stomach, duodenum, and jejunum. Omeprazole injection for 12 and 24 wk induced hypomagnesemia with reduced urinary Mg2+ excretion. The plasma Ca2+ was normal but the urinary Ca2+ excretion was reduced in rats with PPIH. The plasma and urinary PO43-levels increased in PPIH rats. The levels of1α,25(OH)2D3 and FGF-23 increased, whereas that of plasma EGF decreased in the omeprazole-treated rats. The rates of the total, transcellular, and paracellular Mg2+ absorption was significantly lower in the duodenum, jejunum, ileum, and colon of the rats with PPIH than in those of the control rats. The percent suppression of Mg2+ absorption in the duodenum, jejunum, ileum, and colon of the rats with PPIH compared with the control rats was 81.86%, 70.59%, 69.45%,and 39.25%, respectively. Compared with the control rats, the rats with PPIH had significantly higher TRPM6 and CNNM4 expression levels throughout the intestinal tract.CONCLUSION Intestinal Mg2+ malabsorption was observed throughout the intestinal tract of rats with PPIH. PPIs mainly suppressed small intestinal Mg2+ absorption. Omeprazole exerted no effect on the intraluminal acidic pH in the colon. Thus, the lowest percent suppression of total Mg2+ absorption was found in the colon. The expression levels of TRPM6 and CNNM4 increased, indicating the presence of a compensatory response to Mg2+ malabsorption in rats with PPIH. Therefore, the small intestine is an appropriate segment that should be modulated to counteract PPIH.
