目的探讨卵巢子宫内膜异位症(ovary endometriosis,OEM)患者血清磷脂酰胆碱(phosphatidylcholine,PC)、苯丙氨酰-异亮氨酸(phenylalanyl-isoleucine,PheIL)表达水平及临床价值。方法选取2020年1月~2022年1月期间亳州市人民医院诊治的OE...目的探讨卵巢子宫内膜异位症(ovary endometriosis,OEM)患者血清磷脂酰胆碱(phosphatidylcholine,PC)、苯丙氨酰-异亮氨酸(phenylalanyl-isoleucine,PheIL)表达水平及临床价值。方法选取2020年1月~2022年1月期间亳州市人民医院诊治的OEM患者163例为研究对象(OEM组),根据患者术后复发情况分为复发组(n=35)和未复发组(n=128)。以同期因卵巢良性疾病诊治的60例女性患者为对照组。应用高效液相色谱-串联质谱法(high performance liquid chromatography tandem mass spectrometry,HPLC-MS/MS)检测各组血清PC和PheIL水平。比较不同美国生殖医学会(American Society of Reproductive Medicine,ASRM)分期、痛经程度OEM患者血清PC和PheIL水平差异。单因素及多因素COX回归分析影响OEM复发的危险因素。受试者工作曲线评价血清PC,PheIL及联合检测对OEM复发的诊断价值。结果OEM组患者血清PC(34∶3)(18.01±3.66μg/ml),PheIL(64.38±7.75 ng/ml)均高于对照组(1.66±0.47μg/ml,42.66±6.50ng/ml),差异具有统计学意义(t=34.388,18.145,均P<0.05)。ASRM分期Ⅲ~Ⅳ期的OEM患者血清PC(34∶3)(21.74±3.71μg/ml),PheIL水平(71.22±7.89ng/ml)高于Ⅰ~Ⅱ期患者(14.41±3.50μg/ml,57.79±7.60ng/ml),差异具有统计学意义(t=12.979,11.069,均P<0.05)。ASRM分期Ⅲ~Ⅳ期(OR=1.510,P<0.001),PC(34∶3)升高(OR=1.446,P<0.001),PheIL升高(OR=1.706,P<0.001)是影响OEM患者术后复发的独立危险因素,术后妊娠(OR=0.736,P<0.001)和术后用药(OR=0.749,P<0.001)是影响OEM患者术后复发的保护因素。血清PC(34∶3)和PheIL联合检测对OEM复发诊断的曲线下面积(95%CI)为0.864(0.840~0.879),大于血清PC(34∶3)和PheIL单一指标检测0.772(0.735~0.808),0.727(0.683~0.770),差异具有统计学意义(Z=4.252,5.640,均P<0.001)。结论OEM患者血清PC和PheIL水平升高,两者与ASRM分期有关,两者联合检测有助于预测OEM复发。展开更多
Cationic ion-exchange Separation process of L-phenylalanine with high salt concentration was investigated.One cationic exchange resin HD-1 with high adsorbance on L-phenylalanine was selected for the separation.The ad...Cationic ion-exchange Separation process of L-phenylalanine with high salt concentration was investigated.One cationic exchange resin HD-1 with high adsorbance on L-phenylalanine was selected for the separation.The adsorbance of resin was near to 0.09?g L-phenylalanine per milliliter resin.At the same time,the effects of concentration,velocity of flow and inorganic salt on L-phenylalanine adsorption were studied.The yield of separation process was close to 96.7%.展开更多
文摘目的探讨卵巢子宫内膜异位症(ovary endometriosis,OEM)患者血清磷脂酰胆碱(phosphatidylcholine,PC)、苯丙氨酰-异亮氨酸(phenylalanyl-isoleucine,PheIL)表达水平及临床价值。方法选取2020年1月~2022年1月期间亳州市人民医院诊治的OEM患者163例为研究对象(OEM组),根据患者术后复发情况分为复发组(n=35)和未复发组(n=128)。以同期因卵巢良性疾病诊治的60例女性患者为对照组。应用高效液相色谱-串联质谱法(high performance liquid chromatography tandem mass spectrometry,HPLC-MS/MS)检测各组血清PC和PheIL水平。比较不同美国生殖医学会(American Society of Reproductive Medicine,ASRM)分期、痛经程度OEM患者血清PC和PheIL水平差异。单因素及多因素COX回归分析影响OEM复发的危险因素。受试者工作曲线评价血清PC,PheIL及联合检测对OEM复发的诊断价值。结果OEM组患者血清PC(34∶3)(18.01±3.66μg/ml),PheIL(64.38±7.75 ng/ml)均高于对照组(1.66±0.47μg/ml,42.66±6.50ng/ml),差异具有统计学意义(t=34.388,18.145,均P<0.05)。ASRM分期Ⅲ~Ⅳ期的OEM患者血清PC(34∶3)(21.74±3.71μg/ml),PheIL水平(71.22±7.89ng/ml)高于Ⅰ~Ⅱ期患者(14.41±3.50μg/ml,57.79±7.60ng/ml),差异具有统计学意义(t=12.979,11.069,均P<0.05)。ASRM分期Ⅲ~Ⅳ期(OR=1.510,P<0.001),PC(34∶3)升高(OR=1.446,P<0.001),PheIL升高(OR=1.706,P<0.001)是影响OEM患者术后复发的独立危险因素,术后妊娠(OR=0.736,P<0.001)和术后用药(OR=0.749,P<0.001)是影响OEM患者术后复发的保护因素。血清PC(34∶3)和PheIL联合检测对OEM复发诊断的曲线下面积(95%CI)为0.864(0.840~0.879),大于血清PC(34∶3)和PheIL单一指标检测0.772(0.735~0.808),0.727(0.683~0.770),差异具有统计学意义(Z=4.252,5.640,均P<0.001)。结论OEM患者血清PC和PheIL水平升高,两者与ASRM分期有关,两者联合检测有助于预测OEM复发。
文摘Cationic ion-exchange Separation process of L-phenylalanine with high salt concentration was investigated.One cationic exchange resin HD-1 with high adsorbance on L-phenylalanine was selected for the separation.The adsorbance of resin was near to 0.09?g L-phenylalanine per milliliter resin.At the same time,the effects of concentration,velocity of flow and inorganic salt on L-phenylalanine adsorption were studied.The yield of separation process was close to 96.7%.
