Histomorfometria do corno uterino de gatas (Felis catus) submetidas à ovariosalpingohisterectomia / Histomorphometry of the uterine horn of queens (Felis catus) uterus submitted to ovaryhisterectomy

RESUMO

Dados histomorfométricos foram obtidos de cornos uterinos de gatas nulíparas (n=6), primíparas (n= 6), multíparalterações mais marcantes nas gatas tratadas; as variações morfológicas menos marcantes foram relativas ao diâmetro e epitélio glandulares; a presença de glândulas endometriais dilatadas foi encontrada somente nas gatas tratadas.

ABSTRACT

Histomorphometric data were obtained from cats uterine horns either nulliparous (n = 6), primiparous (n = 6), multiparous (n = 6) and treated with contraceptive (n = 6). The material was collected after surgery, fixed in paraformaldehyde and embedded in paraplast® resin to be sliced in a microtome. The obtained sections were stained with hematoxylin -eosin and measured under a light microscope uterine wall total thickness (μm), endometrium total height, endometrial glands diameter and glandular epithelia height, total myometrium, internal and external myometrium and vascular layer thickness. It was concluded that 1 -contraceptive use and number of pregnancies altered the uterine structure, 2 -one pregnancy does not appear to affect the uterine lining structures as occurs in multiparous cats, 3 – there was no variation on the evaluated structures between nulliparous and primiparous cats except for inner myometrium, 4 - the total myometrium hight and the endometrium hight showed similar variations except for the contraceptive treated cats group, 5 - the outer myometrium showed marked changes in the treated cats, 6 – the less marked morphological variations were for the endometrial glands diameter and glandular epithelium hight, 7 - the presence of dilated endometrial glands was found only in treated cats.