title: Ovariectomy differential influence on some hemostatic markers of mice and rats.
abstract: Rodent ovariectomy is an experimental method to eliminate the main source of sexual steroids. This work explored for the first time the ovariectomy temporal changes induced in the hemostatic coagulation markers: prothrombin time (PT), activated partial thromboplastin time (aPTT), thrombin time (TT), and fibrinogen concentration (FIB) along with uterine weight on adult female CD1 mice and Wistar rats. Uterine weight (Uw) was assessed before ovariectomy (control), and 1, 3, 5, 7, 9, 16, and 21 days after surgery. PT, aPTT, TT and FIB were estimated the same days, using reported standard techniques. Ovariectomy decreased Uw, since day 1; and from day 10 to 21 reached the lowest values for both species. After day 1, mice hemostatic parameters changed (PT +10%, P<0.05; aPTT +53%, P<0.05; TT -24%, P<0.05; FIB +67%, P<0.05). Rats showed significant changes only in TT and FIB (TT -13%, P<0.001; FIB +65%, P<0.001). Neither mice PT, aPTT and TT, recovered control values after 21 days. In the rats from day 5 to 16 aPTT diminished (18-23%, P<0.05) recovering to control values on day 21, TT after 9 days and PT on day 16. In both species, FIB returned to its control values after 9 days. Ovariectomy differentially altered the PT hemostatic parameter of mice and rats indicating a non-equivalence among both species behaviour for experimental studies of blood coagulation.
authors.affiliation: Facultad de Medicina, Departamento de Farmacología, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad Universitaria, CP 04510, México D.F., México.
authors.forename: Cristina
authors.initials: C
authors.lastname: Lemini
authors.forename: Ruth
authors.initials: R
authors.lastname: Jaimez
authors.forename: Alejandra
authors.initials: A
authors.lastname: Figueroa
authors.forename: Lucía
authors.initials: L
authors.lastname: Martinez-Mota
authors.forename: María Estela
authors.initials: ME
authors.lastname: Avila
authors.forename: Martha
authors.initials: M
authors.lastname: Medina
mesh_terms: D000818:Animals; D001777:Blood Coagulation; D005260:Female; D005340:Fibrinogen / Q000378:metabolism; D006487:Hemostasis; D008815:Mice, Inbred Strains; D009929:Organ Size; D010052:Ovariectomy; D010314:Partial Thromboplastin Time; D011517:Prothrombin Time; D017208:Rats, Wistar; D013918:Thrombin Time; D014599:Uterus / Q000033:anatomy & histology
chemical_list: D005340:Fibrinogen