Although elevated prolactin levels have been shown to inhibit penile erection,the relationship between prolactin and erection of the penile tip or base has not been extensively researched.We therefore investigated the...Although elevated prolactin levels have been shown to inhibit penile erection,the relationship between prolactin and erection of the penile tip or base has not been extensively researched.We therefore investigated the prolactin's effects on erecti on of the penile tip and base,with a cross-secti onal study of 135 patie nts with erectile dysfuncti on,based on scores of M21 on the In ternational Index of Erectile Function-5.All patients were tested for nocturnal penile tumescenee,blood pressure,serum glucose,total cholesterol,triglyceride,high-density lipoprotein,low-density lipoprotein,luteinizing hormone,follicle-stimulating hormone,prolactin,estradiol,testosterone,and progesterone.Univariate and multivariate analyses were used to assess the associations between prolactin levels and erection at the penile tip and base.We found no obvious relati on ship between erection time at penile tip and prolactin levels,but observed a negative correlation between base erection time and prolactin level(hazard ratio:-2.68;95%confidence interval[Cl]:-5.13-0.22).With increasing prolactin concentration,multivariate analysis showed obvious reduction in base erection time among patients with normal Rigiscan results(hazard ratio:-3.10;95%Cl:-7.96-1.77;P<0.05).Our data indicate that prolactin inhibits penile erection,particularly at the penile base.In addition,when the effective erection time of the penile base lasts longer than 10 min,prolactin has a more obvious inhibitory effect on penile base erection.展开更多
基金This work was supported by the National Nature Science Foundation of China(No.81670625 and No.81470969)the Shandong Province Natural Science Foundation(No.ZR2017BH104,No.ZR2018MH006,No.ZR2018BH007 and No.ZR2015PH023)the Youth Foundation and Ybuth Talent Foundation of the Second Hospital of Shandong University(No.2018YT32 and No.Y2015010038).
文摘Although elevated prolactin levels have been shown to inhibit penile erection,the relationship between prolactin and erection of the penile tip or base has not been extensively researched.We therefore investigated the prolactin's effects on erecti on of the penile tip and base,with a cross-secti onal study of 135 patie nts with erectile dysfuncti on,based on scores of M21 on the In ternational Index of Erectile Function-5.All patients were tested for nocturnal penile tumescenee,blood pressure,serum glucose,total cholesterol,triglyceride,high-density lipoprotein,low-density lipoprotein,luteinizing hormone,follicle-stimulating hormone,prolactin,estradiol,testosterone,and progesterone.Univariate and multivariate analyses were used to assess the associations between prolactin levels and erection at the penile tip and base.We found no obvious relati on ship between erection time at penile tip and prolactin levels,but observed a negative correlation between base erection time and prolactin level(hazard ratio:-2.68;95%confidence interval[Cl]:-5.13-0.22).With increasing prolactin concentration,multivariate analysis showed obvious reduction in base erection time among patients with normal Rigiscan results(hazard ratio:-3.10;95%Cl:-7.96-1.77;P<0.05).Our data indicate that prolactin inhibits penile erection,particularly at the penile base.In addition,when the effective erection time of the penile base lasts longer than 10 min,prolactin has a more obvious inhibitory effect on penile base erection.
