Results 21 to 30 of about 3,713 (220)

Possible mechanisms of structural luteolysis via lymphatic vessels. [PDF]

open access: yes, 2014
Bovine spontaneous luteolysis is caused by PGF2α from the uterus. During structural luteolysis, luteal cells are killed by apoptosis, and macrophages simultaneously infiltrate into the CL to remove luteal cells by phagocytosis. Immediately after starting
Fumio Sekizawa (525532)   +5 more
core   +1 more source

Effect of medroxy-progesterone acetate on follicular growth and endometrial cycloxygenase-2 (COX-2) expression during the bovine estrous cycle Efeito do acetato de medroxi-progesterona sobre o crescimento filicular e expressão endometrial de ciclooxigenase-2 (COX-2) durante o ciclo estral de bovinos

open access: yesPesquisa Veterinária Brasileira, 2010
The objective of this study was to evaluate the effect of medroxy-progesterone acetate (MAP) with or without estradiol benzoate (EB) on follicular growth during the estrous cycle in cattle.
Valério M. Portela   +5 more
doaj   +1 more source

Shortening of dioestrus in female dogs using cloprostenol sodium at different stages of dioestrus

open access: yesJournal of Veterinary and Animal Sciences, 2021
A study was conducted in 18 healthy, fertile, non-pregnant, dioestrous female dogs to evaluate the efficacy of PGF2α analogue (cloprostenol sodium) in shortening the dioestrus.
J. Deepak   +4 more
doaj   +1 more source

323 EFFICIENCY OF CLOPROSTENOL-INDUCED LUTEOLYSIS IN SUPEROVULATED COWS [PDF]

open access: yes, 2011
The induction of multiple ovulations is a key procedure for in vivo embryo production. Many corpora lutea (CL) are developed, resulting in abnormally high progesterone concentrations.
E. D. Souza   +6 more
core   +1 more source

The corpora lutea proangiogenic state of VEGF system components is turned to antiangiogenic at the later phase of the oestrous cycle in cows

open access: yesAnimal, 2015
Blood vessel expansion and reduction in the corpus luteum (CL) is regulated by the vascular endothelial growth factor (VEGF) system and linked to the maintenance of the CL. The VEGF system has both angiogenic and antiangiogenic ligands and receptors. Our
A. Guzmán   +4 more
doaj   +1 more source

Necroptosis in primate luteolysis: a role for ceramide [PDF]

open access: yesCell Death Discovery, 2019
AbstractThe corpus luteum (CL) is a transient endocrine organ, yet molecular mechanisms resulting in its demise are not well known. The presence of phosphorylated mixed lineage kinase domain-like pseudokinase pMLKL(T357/S358) in human and nonhuman primate CL samples (Macaca mulatta and Callithrix jacchus) implied that necroptosis of luteal cells may be
Konstantin Bagnjuk   +10 more
openaire   +4 more sources

Luteal phospholipase A2 activity increases during functional and structural luteolysis in pregnant rats [PDF]

open access: yes, 1999
We determined cytosolic phospholipase A2 activity of the corpus luteum during luteolysis in pregnant and post-partum rats. Phospholipase A2 activity and its metabolite prostaglandin F2α in the corpus luteum remarkably increased just before parturition ...
Kurusu, S.   +4 more
core   +1 more source

Roles of prostaglandin F2alpha and hydrogen peroxide in the regulation of Copper/Zinc superoxide dismutase in bovine corpus luteum and luteal endothelial cells

open access: yesReproductive Biology and Endocrinology, 2012
Background Prostaglandin F2alpha (PGF) induces luteolysis in cow by inducing a rapid reduction in progesterone production (functional luteolysis) followed by tissue degeneration (structural luteolysis).
Vu Hai V   +4 more
doaj   +1 more source

Mechanisms of angioregression of the corpus luteum

open access: yesFrontiers in Physiology, 2023
The corpus luteum is a transient ovarian endocrine gland that produces the progesterone necessary for the establishment and maintenance of pregnancy. The formation and function of this gland involves angiogenesis, establishing the tissue with a robust ...
Corrine F. Monaco   +3 more
doaj   +1 more source

PUBERTY IN HEIFERS AND PREMATURE LUTEOLYSIS IN THE FIRST ESTROUS CYCLE [PDF]

open access: yes, 2016
Puberty is the beginning of the reproductive and productive process, and a gradual maturation process that begins during pregnancy and continues until the female reaches puberty.
Araújo, Aulo Henrique   +7 more
core   +1 more source

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