Six new triterpenoid saponins,aesculusosides A-F(1-6),together with 19 known ones,were isolated from the seeds of Aesculus chinensis.The new structures were elucidated through extensive spectroscopic analyses and by c...Six new triterpenoid saponins,aesculusosides A-F(1-6),together with 19 known ones,were isolated from the seeds of Aesculus chinensis.The new structures were elucidated through extensive spectroscopic analyses and by comparison with previously reported data.Some of the isolates were evaluated for their cytotoxic activities against MCF-7 cell line by an MTT assay,and compounds 15,16,19,and 23-25 exhibited inhibitory activities against MCF-7 with IC50 values ranging from 7.1 to 31.3μM.展开更多
Multiple measurements of nocturnal penile tumescence and rigidity(NPTR)are widely accepted as a method to differentiate psychogenic erectile dysfunction(ED)from organic ED.However,direct evidence remains limited regar...Multiple measurements of nocturnal penile tumescence and rigidity(NPTR)are widely accepted as a method to differentiate psychogenic erectile dysfunction(ED)from organic ED.However,direct evidence remains limited regarding the first-night effect on NPTR measurement using the RigiScan.Here,we evaluated the first-night effect on the results of NPTR measurement to validate the necessity of NPTR measurement for two consecutive nights,particularly when abnormal first-night measurements are recorded in a laboratory setting.We retrospectively reviewed 105 patients with a complaint of ED,who underwent NPTR measurement using the RigiScan in the Department of Infertility and Sexual Medicine,the Third Affiliated Hospital of Sun Yat-sen University(Guangzhou,China),for two consecutive nights,during the period from November 2015 to May 2016.NPTR parameters were collected and analyzed.We found that more effective nocturnal erections were detected during the second night than during the first night(P<0.001).Twenty percent of all patients had no effective erection during the first night,but exhibited at least one effective erection during the second night.The negative predictive value of NPTR measurement during the first night was 43.2%;this was significantly lower than that on the second night(84.2%;P=0.003).Most NPTR parameters were better on the second night than on the first night.The first-night effect might be greater among patients younger than 40 years of age.In conclusion,two consecutive nightly measurements of NPTR can avoid a false-abnormal result caused by the first-night effect;moreover,these measurements more accurately reflect erectile capacity,especially when the first-night record is abnormal in a laboratory setting.展开更多
基金support from the independent topics supported by operational expenses for basic research of China Academy of Chinese Medical Sciences(ZXKT15032).
文摘Six new triterpenoid saponins,aesculusosides A-F(1-6),together with 19 known ones,were isolated from the seeds of Aesculus chinensis.The new structures were elucidated through extensive spectroscopic analyses and by comparison with previously reported data.Some of the isolates were evaluated for their cytotoxic activities against MCF-7 cell line by an MTT assay,and compounds 15,16,19,and 23-25 exhibited inhibitory activities against MCF-7 with IC50 values ranging from 7.1 to 31.3μM.
基金Project supported by the Chinese Academy of Engi- neering, the National Natural Science Foundation of China （No. L1522023）, the National Basic Research Program （973） of China （No. 2015CB351703）, and the National Key Research and Development Plan （Nos. 2016YFB1001004 and 2016YFB1000903）
基金This work was supported by the National Natural Science Foundation of China(No.N SFC 81571424).
文摘Multiple measurements of nocturnal penile tumescence and rigidity(NPTR)are widely accepted as a method to differentiate psychogenic erectile dysfunction(ED)from organic ED.However,direct evidence remains limited regarding the first-night effect on NPTR measurement using the RigiScan.Here,we evaluated the first-night effect on the results of NPTR measurement to validate the necessity of NPTR measurement for two consecutive nights,particularly when abnormal first-night measurements are recorded in a laboratory setting.We retrospectively reviewed 105 patients with a complaint of ED,who underwent NPTR measurement using the RigiScan in the Department of Infertility and Sexual Medicine,the Third Affiliated Hospital of Sun Yat-sen University(Guangzhou,China),for two consecutive nights,during the period from November 2015 to May 2016.NPTR parameters were collected and analyzed.We found that more effective nocturnal erections were detected during the second night than during the first night(P<0.001).Twenty percent of all patients had no effective erection during the first night,but exhibited at least one effective erection during the second night.The negative predictive value of NPTR measurement during the first night was 43.2%;this was significantly lower than that on the second night(84.2%;P=0.003).Most NPTR parameters were better on the second night than on the first night.The first-night effect might be greater among patients younger than 40 years of age.In conclusion,two consecutive nightly measurements of NPTR can avoid a false-abnormal result caused by the first-night effect;moreover,these measurements more accurately reflect erectile capacity,especially when the first-night record is abnormal in a laboratory setting.
