A5074181911- Reproductive Physiology in Livestock
- Reproductive Biology and Fertility
- Growth Hormone and Insulin-like Growth Factors
- Paraoxonase enzyme and polymorphisms
- Reproductive System and Pregnancy
- Pituitary Gland Disorders and Treatments
- Effects of Environmental Stressors on Livestock
- Thyroid Cancer Diagnosis and Treatment
- Genetic and phenotypic traits in livestock
- Pregnancy and preeclampsia studies
- Ruminant Nutrition and Digestive Physiology
- Milk Quality and Mastitis in Dairy Cows
- Sperm and Testicular Function
- Adrenal and Paraganglionic Tumors
- Birth, Development, and Health
- Cynara cardunculus studies
- Glioma Diagnosis and Treatment
- Animal Nutrition and Physiology
- Child and Adolescent Health
- Cancer Risks and Factors
- Helminth infection and control
- Pharmacological Effects and Assays
- Ovarian cancer diagnosis and treatment
- Neuroblastoma Research and Treatments
- Pregnancy-related medical research
Colombian Corporation for Agricultural Research - AGROSAVIA
2016-2025
University of Illinois Urbana-Champaign
2015-2019
Instituto de Biomedicina y Genética Molecular de Valladolid
2019
Universidad de Valladolid
2019
Vall d'Hebron Hospital Universitari
2019
Osaka University
2019
Universidade Federal de Pelotas
2013-2017
Urbana University
2017
Hospital Universitario Virgen del Rocío
1988
The aim of this study was to evaluate the effect an acute systemic inflammatory response induced by lipopolysaccharide (LPS) in serum and follicular fluid (FF) high-density lipoprotein (HDL) components, hormone concentrations granulosa cell gene expression. For purpose, twenty non-lactating Jersey dairy cows were submitted a progesterone (P4) - estradiol (E2) based synchronization protocol. Cows received single i.v. dose LPS (2.5 μg/kg body weight) or saline solution (CTL Group) 2 h after P4...
Cystic ovarian follicles (COF) etiology remains a conundrum with steroidogenic, immunological, and metabolic dysfunctions linked to its development. Studies suggest that COF development may occur as result of disruption the insulin signaling pathway severity negative energy balance in dairy cows, but mid late lactation cows diagnosed are unlikely have issues metabolism. Herein, we characterized mRNA expression steroidogenic (LHCGR, StAR, CYP11A1, 3β-HSD, CYP19A), immunological (IL-1β, IL-6,...
Methionine is one of the most limiting amino acids in dairy diets and low feed intake around time calving could lead to decreased synthesis phosphatidylcholine. An alternative pathway for phosphatidylcholine have choline as a precursor. The objective this study was determine effects feeding rumen-protected methionine pre - postpartum on reproduction Holstein cows. Seventy-two cows were randomly assigned four treatments from 21 days before 30 milk (DIM): supplementation with (MET; n = 20,...
The aim of this study was to evaluate the long-term effects recombinant bovine somatotropin (rbST) on follicle population and ovulatory development in non-lactating dairy cows.Twenty-one Jersey cows were allocated rbST (n=11) or control (n=10) groups.On day -60, group received 500 mg (s.c.Lactotropin , Elanco).On 0, an intravaginal progesterone-releasing device (1.9 g, CIDR Zoetis) GnRH (100 mg, IM, Factrel Zoetis).On 8, PGF2α (25 Lutalyse removed.Twelve hours after removal (D8), serum,...
Acosta, D. A. V., Pfeifer, L. F. M., Schmitt, E., Schneider, A., Silveira, P. S., Jacometo, C. B., Brauner, C., Rabassa, V. R., Corrêa, M. N. and Del Pino, B. 2013. Effect of prepartum somatotropin injection in late pregnant Holstein heifers with high body condition score on metabolic parameters, resumption ovulation milk production. Can. J. Anim. Sci. 93: 287–292. In the early post-partum period dairy cows duration intensity negative energy balance, level (BCS) loss yield are strongly...
The management of non-functioning pituitary adenomas with bromocriptine is controversial, and surgical treatment usually prescribed when the visual field affected. Here we report, what believe to be first case a patient adenoma who experienced normalization defects substantial improvement in acuity after parenteral administration depot-bromocriptine. patient's tolerance drug was excellent. results immunohistochemical study surgically removed tumor were negative for PRL, GH, LH, FSH, TSH...
A 46-year-old woman with acromegaly and marked hyperprolactinemia was treated chronically sandostatin (50 µg b.i.d. up to 100 t.i.d.). Plasma growth hormone (GH) reduced by 90% of basal values prolactin (PRL) dropped from initially 204 74 ng/ml. Serial CAT scans detected a volume reduction the pituitary adenoma 46.7%, but discontinuation therapy followed re-expansion tumor. Tissue collected at transsphenoidal adenomectomy examined immunohistology found positive for both GH PRL. This...
Objetivo. Determinar el efecto de la ablación folicular en inicio un protocolo superovulación (SPO) sobre respuesta superovulatoria vacas donantes raza Brahman. Materiales y métodos. Se utilizaron 20 Brahman, las cuales fueron distribuidas aleatoriamente dos grupos: Grupo control (G1; n = 10), sincronización onda crecimiento fue realizada mediante combinación estrógenos (2.5 mg, Benzoato Estradiol) progestágenos (1 gr, implante intravaginal); cuatro días después se inició SPO con hormona...
Cows experiencing high levels of inflammation and specific metabolic conditions tend to have slower follicular growth lower serum concentrations oestradiol (E2). Paraoxonase1 (PON1) activity decreases during inflammatory processes. Therefore, the aim this study was evaluate association between intrafollicular (FF) PON1 E2 progesterone (P4), as well mRNA expression genes related steroidogenesis, metabolism in first post-partum dominant follicle Holstein cows. No correlation found activity,...
Background: Milk production of cows is closely correlated with its reproductive efficiency. One the several factors influencing dairy efficiency decline in fertility cows/heifers. Use hormonal protocol are often used to improve recipients. Several programs available inseminate cows, variation use different types hormones, time and range duration period, as well AI. The objective this study was evaluate follicular wave emergence induction estradiol benzoate comparison GnRH a Heatsynch...
O objetivo deste estudo foi determinar variações em parâmetros metabólicos e endócrinos de suínos machos durante o primeiro ano vida sua relação com a puberdade. Foram utilizados seis acompanhados, 22 360 dias idade, pesagens corporais coletas sangue cada sete para avaliação dos níveis séricos glicose, insulina, colesterol, albumina, ureia, cálcio, fósforo, aspartato aminotransferase (AST), gama glutariltransferase (GGT), ácidos graxos não esterificados (NEFA) testosterona. A partir do ganho...