title: [Variations in the molecular forms of LH and FSH during the normal ovarian cycle].
abstract: FSH and LH concentrations during the menstrual cycle are well known, showing characteristically a midcycle surge in LH as well as in less degree in FSH. At the present there is an increasing interest in studying variations of the moleculoar forms of both gonadotropins. We have studied the chromatographic profile of FSH and LH in sera obtained from women regularly ovulating and in patients with anovulatory cycles by the use of gel column chromatography. It was observed the predominance of LH 32-34 kDa at midcycle and the heterogeneous FSH profile during the ovarian cycle. In sera from anovulatory patients the chromatographic profile was even more irregular for both LH and FSH. It is concluded that LH 32-34 kDa may be the more biological isoform in turn related with the process of ovulation.
authors.affiliation: Unidad de Investigación Médica en Enfermedades Endócrinas, Hospital de Especialidades, México.
authors.forename: M
authors.initials: M
authors.lastname: Hernandez-Valencia
authors.forename: M
authors.initials: M
authors.lastname: Mason
authors.forename: M
authors.initials: M
authors.lastname: Eugenia Fonseca
authors.forename: A
authors.initials: A
authors.lastname: Zarate
mesh_terms: D000328:Adult; D002850:Chromatography, Gel; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood*; D008597:Menstrual Cycle / Q000097:blood* / Q000502:physiology; D008968:Molecular Conformation; D010060:Ovulation / Q000502:physiology; D011863:Radioimmunoassay
chemical_list: D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone
vernacular_title: Variaciones de las formas moleculares de LH y FSH durante el ciclo ovárico normal.