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Article: Serum immunoreactive beta-endorphin in the human ovulatory cycle

TitleSerum immunoreactive beta-endorphin in the human ovulatory cycle
Authors
Issue Date1987
Citation
International Journal Of Fertility, 1987, v. 32 n. 2, p. 149-151 How to Cite?
AbstractDaily serum immunoreactive beta-endorphin (IR-β-EP) levels, in conjunction with luteinizing hormone, follicle-stimulating hormone, 17β-oestradiol, progesterone, and prolactin, were measured during the ovulatory cycle in five healthy Chinese women. Standardization of raw data by conversion to the statistical 'Z scores' and composite plot of the five cycles showed that serum IR-β-EP levels fluctuated during the follicular, late luteal, and menstrual phases. A preovulatory rise occurred two to three days prior to the luteinizing hormone surge, followed by a postovulatory dip for two to three days. The concentrations of IR-β-EP were (mean ± S.E.M.): 85.5 ± 10.5 pg/mL (n = 36) in the follicular phase; 92.4 ± 36.5 pg/mL (n = 5) in the ovulatory phase; 72.3 ± 16.6 pg/mL (n = 7) in the early luteal phase; 100.0 ± 10.7 pg/mL (n = 38) in the late luteal phase. The values in the luteal phase were the highest of any in the ovulatory cycle. The findings suggest that the fluctuation of endogenous β-EP is under the influence of, among other factors, ovarian sex steroids. The significance of β-EP in the regulation of gonadotropin release during normal menstrual cycles is discussed.
Persistent Identifierhttp://hdl.handle.net/10722/173117
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTang, LCHen_HK
dc.contributor.authorChan, SYWen_HK
dc.contributor.authorTang, GWKen_HK
dc.contributor.authorMa, HKen_HK
dc.date.accessioned2012-10-30T06:28:01Z-
dc.date.available2012-10-30T06:28:01Z-
dc.date.issued1987en_HK
dc.identifier.citationInternational Journal Of Fertility, 1987, v. 32 n. 2, p. 149-151en_HK
dc.identifier.issn0020-725Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/173117-
dc.description.abstractDaily serum immunoreactive beta-endorphin (IR-β-EP) levels, in conjunction with luteinizing hormone, follicle-stimulating hormone, 17β-oestradiol, progesterone, and prolactin, were measured during the ovulatory cycle in five healthy Chinese women. Standardization of raw data by conversion to the statistical 'Z scores' and composite plot of the five cycles showed that serum IR-β-EP levels fluctuated during the follicular, late luteal, and menstrual phases. A preovulatory rise occurred two to three days prior to the luteinizing hormone surge, followed by a postovulatory dip for two to three days. The concentrations of IR-β-EP were (mean ± S.E.M.): 85.5 ± 10.5 pg/mL (n = 36) in the follicular phase; 92.4 ± 36.5 pg/mL (n = 5) in the ovulatory phase; 72.3 ± 16.6 pg/mL (n = 7) in the early luteal phase; 100.0 ± 10.7 pg/mL (n = 38) in the late luteal phase. The values in the luteal phase were the highest of any in the ovulatory cycle. The findings suggest that the fluctuation of endogenous β-EP is under the influence of, among other factors, ovarian sex steroids. The significance of β-EP in the regulation of gonadotropin release during normal menstrual cycles is discussed.en_HK
dc.languageengen_US
dc.relation.ispartofInternational Journal of Fertilityen_HK
dc.subject.meshAdulten_US
dc.subject.meshEndorphins - Blooden_US
dc.subject.meshFemaleen_US
dc.subject.meshGonadal Steroid Hormones - Blooden_US
dc.subject.meshGonadotropins, Pituitary - Blooden_US
dc.subject.meshHumansen_US
dc.subject.meshMenstrual Cycleen_US
dc.subject.meshOvulationen_US
dc.subject.meshBeta-Endorphinen_US
dc.titleSerum immunoreactive beta-endorphin in the human ovulatory cycleen_HK
dc.typeArticleen_HK
dc.identifier.emailTang, LCH: lchtang@hku.hken_HK
dc.identifier.emailTang, GWK: gwktang@hkucc.hku.hken_HK
dc.identifier.authorityTang, LCH=rp01756en_HK
dc.identifier.authorityTang, GWK=rp00328en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid2883143-
dc.identifier.scopuseid_2-s2.0-0023258320en_HK
dc.identifier.volume32en_HK
dc.identifier.issue2en_HK
dc.identifier.spage149en_HK
dc.identifier.epage151en_HK
dc.identifier.isiWOS:A1987G685500009-
dc.identifier.scopusauthoridTang, LCH=7402081111en_HK
dc.identifier.scopusauthoridChan, SYW=7404255960en_HK
dc.identifier.scopusauthoridTang, GWK=7401633864en_HK
dc.identifier.scopusauthoridMa, HK=7403095603en_HK

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