Urocortin,a novel peptide of the cortiotropin releasiong hormone(CRH)family,was discovered in 1995 in the rat brain and subsequently cloned and localized to human chromosome 2.It can bind to both CRH type 1 receptor a...Urocortin,a novel peptide of the cortiotropin releasiong hormone(CRH)family,was discovered in 1995 in the rat brain and subsequently cloned and localized to human chromosome 2.It can bind to both CRH type 1 receptor and CRH type 2 receptor,as well as CRH binding protein.Especially to CRH type 2 receptor,urocortin binds to it with 40 times more potency than CRH does.Therefore,urocortin is thought to be an endogenous ligand for CRH type 2 receptor.Immunoreactive urocortin and urocortin mRNA were localized in many areas such as mammalian brain,cardiovascular system,placenta.It is believed that urocortinmay play important physiological roles as a neuropeptide not only in the central nervous system but also in peripheral tissues.展开更多
目的检测先兆早产患者外周血促肾上腺皮质激素释放激素（CRH）浓度,探讨其浓度与先兆早产症状的相关性及影响其浓度的因素,以探讨CRH浓度作为预测早产指标的可行性。方法选取先兆早产住院孕妇及不足月非先兆早产原因住院孕妇共45例,其...目的检测先兆早产患者外周血促肾上腺皮质激素释放激素（CRH）浓度,探讨其浓度与先兆早产症状的相关性及影响其浓度的因素,以探讨CRH浓度作为预测早产指标的可行性。方法选取先兆早产住院孕妇及不足月非先兆早产原因住院孕妇共45例,其中先兆早产组（孕28~36周）22例,对照组（孕28~36周、无先兆早产症状的孕妇）23例。采每位受试对象抗凝外周血5 m L,分离血浆,采用ELISA法测定CRH浓度。结果先兆早产组孕妇外周血CRH浓度与对照组孕妇相比显著升高（P〈0.01）。先兆早产组与对照组的新生儿出生Apgar评分（1和5 min）均〉7分,且2组比较新生儿出生Apgar评分无统计学差异（P〉0.05）。先兆早产组与对照组比较,宫颈Bishop评分无统计学差异（P〉0.05）,先兆早产组中CRH浓度与宫颈Bishop评分无明显关系（P〉0.05）。先兆早产组与对照组中,双胎者与单胎者相比,胎膜早破者与非胎膜早破者相比,CRH浓度的差异均有统计学意义（均P〈0.05）。结论血浆CRH浓度明显升高是先兆早产的显著指标。血浆CRH浓度不影响新生儿出生状态和宫颈成熟度,但受妊娠胎儿数影响,且与胎膜早破密切相关。血浆CRH浓度有望成为预测先兆早产的指标,但其影响因素较多,应在分析其影响因素后进一步研究其预测定量值。展开更多
文摘Urocortin,a novel peptide of the cortiotropin releasiong hormone(CRH)family,was discovered in 1995 in the rat brain and subsequently cloned and localized to human chromosome 2.It can bind to both CRH type 1 receptor and CRH type 2 receptor,as well as CRH binding protein.Especially to CRH type 2 receptor,urocortin binds to it with 40 times more potency than CRH does.Therefore,urocortin is thought to be an endogenous ligand for CRH type 2 receptor.Immunoreactive urocortin and urocortin mRNA were localized in many areas such as mammalian brain,cardiovascular system,placenta.It is believed that urocortinmay play important physiological roles as a neuropeptide not only in the central nervous system but also in peripheral tissues.
文摘目的检测先兆早产患者外周血促肾上腺皮质激素释放激素（CRH）浓度,探讨其浓度与先兆早产症状的相关性及影响其浓度的因素,以探讨CRH浓度作为预测早产指标的可行性。方法选取先兆早产住院孕妇及不足月非先兆早产原因住院孕妇共45例,其中先兆早产组（孕28~36周）22例,对照组（孕28~36周、无先兆早产症状的孕妇）23例。采每位受试对象抗凝外周血5 m L,分离血浆,采用ELISA法测定CRH浓度。结果先兆早产组孕妇外周血CRH浓度与对照组孕妇相比显著升高（P〈0.01）。先兆早产组与对照组的新生儿出生Apgar评分（1和5 min）均〉7分,且2组比较新生儿出生Apgar评分无统计学差异（P〉0.05）。先兆早产组与对照组比较,宫颈Bishop评分无统计学差异（P〉0.05）,先兆早产组中CRH浓度与宫颈Bishop评分无明显关系（P〉0.05）。先兆早产组与对照组中,双胎者与单胎者相比,胎膜早破者与非胎膜早破者相比,CRH浓度的差异均有统计学意义（均P〈0.05）。结论血浆CRH浓度明显升高是先兆早产的显著指标。血浆CRH浓度不影响新生儿出生状态和宫颈成熟度,但受妊娠胎儿数影响,且与胎膜早破密切相关。血浆CRH浓度有望成为预测先兆早产的指标,但其影响因素较多,应在分析其影响因素后进一步研究其预测定量值。
