Aspectos histopatológicos da adenomiose em úteros bovinos nas diferentes fases do ciclo estral

Abstract

RESUMORelacionaram-se as características da adenomiose com as fases do ciclo estral em 61 peças de úteros de bovinos colhidas em matadouros. A adenomiose foi classificada em superficial e profunda. A fase do ciclo estral foi estimada pela morfologia, pela coloração e pela vascularização do corpo lúteo e presença ou não de folículos ovarianos maiores que 8mm. Os animais que estavam em anestro (n=11) apresentaram a menor ocorrência de adenomiose (8,2%), e os que estavam na fase lútea média (n=21), a maior (31,0%). Nas fases lútea inicial (n=13) e folicular (n=16) as ocorrências foram semelhantes, 18,0 e 22,9%, respectivamente. A maior porcentagem de adenomiose profunda ocorreu nas fases lútea inicial e média, 45,0 e 47,4%, respectivamente, e durante o anestro e a fase folicular foram de 20,0 e 14,3%, respectivamente. Os resultados sugerem que a fase do ciclo estral influencia na ocorrência de adenomiose e no grau de infiltração miometrial das glândulas endometriais.Palavras-chave: bovino, adenomiose, ciclo estral, histopatologia ABSTRACT The relationship of the adenomyosis characteristics and the phases of the estrus cycle in 61 cows bovine's uteruses collected in slaughterhouses was

Occurrence of uterine carriers for Leptospira interrogans on slaughtered cows

“…This study was approved by ethics committee (# 863). This is a retrospective study using samples (0.5 cm 3 ) of the middle-third of the uterine horn collected from 50 post-pubertal, nonpregnant cows, at a local abattoir (near Rio de Janeiro, Brazil), between March/2003 and December/2004 [13]. Samples were fixed in 10% buffered formalin, paraffin-embedded and stored since 2004.…”

Differential immunohistochemical expression of matrix metalloproteinase-2 and tissue inhibitor of metalloproteinase-2 in cow uteri with adenomyosis during follicular phase

“…Previous studies (Moreira et al 2007) have observed that during the luteal phase the incidence of adenomyosis as well as the degree of infiltration of the adenomyotic focus were more substantially increased, which suggests the influence of progesterone in the depth the focus may reach. This suggests an intensification of adenomyosis during the luteal phase, as well as a possible regression during the follicular phase.…”

“…In bovines, the adenomyosis has been less frequently reported (Moreira et al 2007). The mechanisms of adenomyosis progression have not been fully elucidated, though studies have indicated that this dystrophy is caused mostly by degradation and abnormal reconstitution of uterine elements adjacent to the endometrial-myometrial border due to the differences in MMPs and TIMPs activities, which allows endometrial tissue to invade the myometrium Matsuda et al 2001;Hirata et al 2002;Yang et al 2009).…”

“…Sample collection and preparation and the classification of the estrous cycle and degree of adenomyosis were carried out according to the method described by Moreira et al (2007).…”

Adenomiose uterina em gata associada à piometra

“…Apesar de já relatada em várias espécies, a sua etiologia ainda não está bem elucidada, e sua ocorrência é considerada pouco frequente em animais domésticos, sendo mais comum em fêmeas que apresentam ciclo menstrual (Greaves e White, 2006;Moreira et al, 2007).…”