Article
Agriculture, Dairy & Animal Science
Bartlomiej Maria Jaskowski, Hartwig Bostedt, Marek Gehrke, Jedrzej Maria Jaskowski
Summary: The study shows that recipients with a cavitary corpus luteum have higher progesterone levels and pregnancy rates during embryo transfer. Therefore, the presence of a cavity inside the corpus luteum should not be a reason to exclude recipients from embryo transfer.
Review
Agriculture, Dairy & Animal Science
Massimo Zerani, Angela Polisca, Cristiano Boiti, Margherita Maranesi
Summary: Corpora lutea are temporary endocrine structures that secrete progesterone, essential for a healthy pregnancy. Research using the pseudopregnant rabbit model has shed light on the multifactorial mechanisms regulating CL lifespan, providing valuable insights for overcoming reproductive challenges in mammalian species.
Article
Agriculture, Dairy & Animal Science
S. G. Umana Sedo, C. C. Figueiredo, T. D. Gonzalez, G. A. Duarte, M. B. Ugarte Marin, C. A. Crawford, K. G. Pohler, R. C. Chebel, T. R. Bilby, R. S. Bisinotto
Summary: The objective of this study was to evaluate the effects of two analogs of PGF(2 alpha), cloprostenol and dinoprost, as well as the effects of one injection versus two injections on luteolysis, follicle diameter, hormonal concentrations, and time to ovulation in dairy heifers. The results showed that cloprostenol induced luteolysis faster compared to dinoprost, but treatment did not affect the time to ovulation.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Cecily Bishop, Vimal Selvaraj, David H. Townson, Joy L. Pate, Milo C. Wiltbank
Summary: The corpus luteum (CL) forms from the cellular remnants of the follicle and produces progesterone required for successful pregnancy. The CL and the embryo have a symbiotic relationship, both relying on each other for survival. The Northeast Multistate Project has contributed to our understanding of the regulation and function of the CL in cattle, providing valuable insights for improving fertility.
JOURNAL OF ANIMAL SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Maria Camila Lopez-Duarte, Camila Londono, Sergio Lasso, Daniella Heredia, Morgan Brown, Nicolas DiLorenzo, Ky Pohler, Angela Gonella
Summary: During cell death, DNA is fragmented and enters the bloodstream as cell-free DNA (cfDNA). We hypothesized that cfDNA concentrations would increase when inducing luteolysis through the use of a prostaglandin F-2α (PGF2α) analog. The results showed a significant increase in cfDNA concentrations after luteolysis induction, indicating that cfDNA could be used as a biomarker for luteolysis in plasma.
REPRODUCTION IN DOMESTIC ANIMALS
(2023)
Article
Engineering, Biomedical
Rojan Saghian, Lindsay Cahill, Anum Rahman, Joseph Steinman, Greg Stortz, John Kingdom, Christopher Macgowan, John Sled
Summary: This study presented a generalized wave decomposition method to compute forward and reflected components from UA waveforms, exploring the relationship between placental vascular abnormalities and FGR. The findings suggest that terminal load impedance plays a significant role in shaping waveforms, potentially aiding in distinguishing healthy and abnormal placental vasculature in pregnancies suspected of late-onset FGR.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2021)
Article
Food Science & Technology
Dainan Yu, Xun Jiang, Wenjing Ge, Bo Qiao, Dalei Zhang, Hui Liu, Haibin Kuang
Summary: This study found that acrylamide exposure during early- and mid-pregnancy had negative effects on luteal function, including decreased levels of serum progesterone and estradiol, reduced numbers and relative areas of ovarian corpora lutea, dysregulation of ovarian angiogenesis, increased oxidative stress, and induced apoptosis of ovarian cells.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Developmental Biology
Divika Sapehia, Aatish Mahajan, Radhika Srinivasan, Jyotdeep Kaur
Summary: This study explored the effects of low vitamin B12 combined with different levels of folic acid on fetal growth parameters and maternal reproductive performance. The results showed that vitamin B12 deficiency and excessive folic acid supplementation resulted in decreased placental and fetal weight in the first generation. Similar effects were also observed in the second generation with decreased placental weight, fetal weight, crown-rump length, and head circumference. Over-supplemented folic acid also affected ovarian follicles and placental pathology.
Article
Agriculture, Dairy & Animal Science
Thiago O. Cunha, Leah R. Statz, Rafael R. Domingues, Joao Paulo N. Andrade, Milo C. Wiltbank, Joao Paulo N. Martins
Summary: The objective of this study was to investigate the effects of inducing accessory corpus luteum on follicular and luteal dynamics in lactating Holstein cows. The results showed that inducing accessory corpus luteum not only altered the dynamics of follicles and corpus luteum but also deferred and prolonged the process of luteolysis.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
R. S. Bisinotto, E. S. Ribeiro, L. F. Greco, D. Taylor-Rodriguez, A. D. Ealy, H. Ayres, F. S. Lima, N. Martinez, W. W. Thatcher, J. E. P. Santos
Summary: This study evaluated the effects of follicular wave and progesterone concentration on growth of the ovulatory follicle, conceptus elongation, uterine IFN-tau concentration, and transcriptome of conceptus and endometrium in pregnant cows. The results indicated that progesterone concentration had an impact on the growth of ovulatory follicle, but overall had minimal effects on the conceptus and endometrium transcriptome.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Veterinary Sciences
Samer M. Daghash, Noha A. E. Yasin, Elshymaa A. Abdelnaby, Ibrahim A. Emam, Ayman Tolba, Yara S. Abouelela
Summary: This study compares the growth and development of the corpus luteum in pregnant and non-pregnant domestic buffalos from days 5 to 40 after ovulation and explores the correlation between luteal vascularity and progesterone and nitric oxide levels.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Review
Agriculture, Dairy & Animal Science
Dody Houston Billhaq, Seunghyung Lee
Summary: This review discusses the role of the RAS protein in the formation and regression of the corpus luteum in the ovary, highlighting its regulation of cell survival, proliferation, and differentiation through various signaling pathways. The complex molecular events in the ovarian microenvironment, such as angiogenesis and apoptosis, are also emphasized. Further research is needed to better understand how the RAS family impacts the biological events of the corpus luteum in the ovary.
Review
Agriculture, Dairy & Animal Science
J. L. Pate, C. H. K. Hughes
Summary: The corpus luteum plays a critical role in pregnancy in all mammals. However, the fate of the corpus luteum in ruminants depends on the presence of a functional uterus or signals from a developing embryo. Prostaglandin F2alpha, secreted by the uterus, is a key molecule that needs to be modified. The sensitivity of the corpus luteum to prostaglandin F2alpha can be influenced by internal mechanisms. Understanding the molecular changes that occur during different stages of luteal development and pregnancy can provide insight into the regulation of luteolytic capacity in ruminants.
Article
Reproductive Biology
Hongwei Duan, Shuai Yang, Longfei Xiao, Shanshan Yang, Zhenxing Yan, Fang Wang, Xiaofei Ma, Lihong Zhang, Yong Zhang, Junjie Hu, Xingxu Zhao
Summary: This study first elucidated the mechanism by which melatonin regulates progesterone secretion in the corpus luteum of sheep, namely by promoting progesterone secretion through the regulation of autophagy. This has important implications for further exploring the role of melatonin in regulating sheep ovarian function.
Article
Agriculture, Dairy & Animal Science
Liliana Rossetto, Maria Florencia Gallelli, Marcelo Alfredo Aba, Marcelo Horacio Miragaya, Carolina Paula Bianchi
Summary: The study aimed to investigate the effect of early administration of progesterone after ovulation on corpus luteum lifespan in llamas. Female llamas were induced to ovulate and divided into two groups: the treated group received progesterone treatment, while the control group did not. Plasma progesterone concentration and ultrasonographies were monitored throughout the study. The results showed that early progesterone administration affected corpus luteum function in llamas.
ANIMAL REPRODUCTION SCIENCE
(2023)