Results 1 to 10 of about 2,392 (163)

Controlled internal drug release (CIDR) removal before luteolysis prolongs estrus interval and increases silent heat risk in Japanese Black cows [PDF]

The Journal of Reproduction and Development
This study aimed to improve estrus management in Japanese Black cows by investigating the effects of controlled internal drug release (CIDR) treatment on luteal function including luteolysis and estrous characteristics.
Takuo HOJO, Kei HORIHATA, Naoki TAKENOUCHI   +2 more
doaj   +2 more sources

Integrated hormonal, metabolic, and epigenetic regulation of corpus luteum function: insights into steroidogenesis, angiogenesis, and regression [PDF]

Frontiers in Endocrinology
The corpus luteum is a transient endocrine structure essential for establishing and maintaining early pregnancy, primarily through the secretion of progesterone.
Muhammad Tariq, Mohamed Tharwat, Shumaila Batool, Abdul Quddus, Abdul Quddus, Muhammad Safdar, Yousef M. Alharbi   +6 more
doaj   +2 more sources

Reduced period from follicular wave emergence to luteolysis generated greater steroidogenic follicles and estrus intensity in dairy cows [PDF]

Scientific Reports, 2023
The onset of productive life in dairy cattle, concomitant to parturition, is accompanied by a substantial decrease in fertility in comparison with non-lactating, nulliparous heifers.
T. Minela, P. Gibb, S. McBeth, A. Santos, J. R. Pursley   +4 more
doaj   +2 more sources

A Novel Microencapsulated Bovine Recombinant Interferon Tau Formulation for Luteolysis Modulation in Cattle [PDF]

Biomolecules
Early embryonic loss is a major cause of reproductive inefficiency in cattle, primarily due to premature luteolysis. Interferon tau (IFN-τ), secreted by the trophoblast, plays a critical role in maternal recognition of pregnancy by maintaining corpus ...
Emilio Lamazares, Aleikar Vásquez, Kelly Gancino, Felipe Sandoval, Javiera Yáñez-Torres, Miguel A. Gutierrez-Reinoso, Manuel García-Herreros, Paula Gädicke, Ignacio Cabezas, Florence Hugues, Thelvia I. Ramos, Frank Camacho, Karel Mena-Ulecia, Jorge R. Toledo   +13 more
doaj   +2 more sources

Apoptosis, autophagic cell death, and necroptosis: different types of programmed cell death in bovine corpus luteum regression

The Journal of Reproduction and Development, 2022
In mammals, the corpus luteum (CL) is a transient organ that secretes progesterone (P4). In the absence of pregnancy, the CL undergoes regression (luteolysis), which is a crucial preparation step for the next estrous cycle.
Takuo HOJO, Dariusz J. SKARZYNSKI, Kiyoshi OKUDA   +2 more
doaj   +1 more source

Accessory corpus luteum induced by human chorionic gonadotropin on day 7 or days 7 and 13 of the estrous cycle affected follicular and luteal dynamics and luteolysis in lactating Holstein cows

Journal of Dairy Science, 2022
: Our objective was to determine the effect of inducing an accessory corpus luteum (CL) with human chorionic gonadotropin (hCG; 3,300 IU) on d 7 (hCG7) or 2 accessory CL with hCG on d 7 and 13 (hCG7+13) of the estrous cycle in noninseminated lactating ...
Thiago O. Cunha, Leah R. Statz, Rafael R. Domingues, João Paulo N. Andrade, Milo C. Wiltbank, João Paulo N. Martins   +5 more
doaj   +1 more source

A Review of Delayed Delivery Models and the Analysis Method in Mice

Journal of Developmental Biology, 2022
In humans, the incidence of post-term delivery is 1–10%. Post-term delivery significantly increases the risk of cesarean section or neonatal intensive care unit (NICU) admission.
Hiroshi Yomogita, Naoyuki Miyasaka, Masami Kanai-Azuma   +2 more
doaj   +1 more source

Intraovarian regulation of luteolysis [PDF]

Bioscientifica Proceedings, 2019
The corpus luteum is a transient gland, which is only functional for 17-18 days in the cyclic cow or for up to 200 days in the pregnant cow. Regression of the corpus luteum is essential for normal cyclicity as it allows the development of a new ovulatory follicle, whereas prevention of luteolysis is necessary for the maintenance of pregnancy.
R, Meidan, R A, Milvae, S, Weiss, N, Levy, A, Friedman   +4 more
openaire   +2 more sources

The Timing of the Maternal Recognition of Pregnancy Is Specific to Individual Mares

Animals, 2023
The present experiment aimed at determining whether the timing of the maternal recognition of pregnancy (MRP) was specific to individual mares by determining when luteostasis, a failure to return to oestrus, reliably occurred in individuals following ...
John R. Newcombe, Juan Cuervo-Arango, Sandra Wilsher   +2 more
doaj   +1 more source

The Role of Peroxisome Proliferator-Activated Receptors in PGF_2α-Induced Luteolysis in the Bovine Corpus Luteum

Animals, 2022
The participation of peroxisome proliferator-activated receptors (PPARs) in ovarian function in cattle is still not fully understood. The aim of this in vitro study was to determine: (i) the immunolocalization, mRNA expression and tissue concentration of
Barbara Maria Socha, Piotr Łada, Agnieszka Walentyna Jończyk, Anna Justyna Korzekwa, Dariusz Jan Skarżyński   +4 more
doaj   +1 more source