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| Registros recuperados: 62 | |
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| Takada, Luciana; USP; Bicudo, Sony Dimas; UNESP; Rodrigues, Carlos Frederico; APTA; Coelho, Lia de Alencar; USP; Perri, Silvia Venturolli; UNESP. |
| Este trabalho foi realizado com o objetivo de estudar a eficácia do protocolo de curta duração de sincronização do estro. As ovelhas foram divididas em quatro grupos: Grupo Controle (esponjas de MAP por 12 dias, e eCG na retirada); Os Grupos I, II e III permaneceram com a esponja por quatro dias e na retirada foi aplicado 100 µg de PGF e adicionalmente: no Grupo I (0,1 mg de Benzoato de estradiol - BE na colocação da esponja e 48h após a retirada 50 µg de GnRH); Grupo II (35 mg de progesterona injetável e 0,1 mg de BE na colocação da esponja e na retirada 400 UI de eCG e 50 µg de GnRH 48h após); Grupo III (35 mg de progesterona injetável e 0,2 mg de BE na colocação da esponja e na retirada 400 UI de eCG e 50 µg de... |
| Tipo: Analise laboratorial e pesquisa de campo |
Palavras-chave: Benzoato de estradiol; ECG; GnRH; Progesterona; Ultrassonografia reprodução animal Estradiol benzoate; ECG; GnRH; Progesterone; Ultrasound. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6938 |
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| Miranda-Moura,M.T.M.; Oliveira,G.B.; Peixoto,G.C.X.; Pessoa,J.M.; Papa,P.C.; Maia,M.S.; Moura,C.E.B.; Oliveira,M.F.. |
| The current paper characterizes the changes in morphology and vascularization of the corpus luteum of collared peccaries during the estrous cycle and correlates progesterone synthesis (P4). Twenty females were subjected to a treatment for estrus synchronization; an ear implant containing 1.5 mg of norgestomet was implanted on D0, whereas on D9 the peccaries received an IM injection of eCG 200UI and 50g of PGF2a. The animals were divided into four groups (G1, G2, G3 and G4) and euthanized on post-ovulation days 3, 12, 18 and 22. The ovaries were collected and the corpora lutea were measured and processed for histological and vascular density (Dv). Blood was collected for dosage of P4 serum. The morphology of the ovaries, the corpora lutea and P4 varied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Collared peccary; Corpora lutea; Estrous cycle; Progesterone; Vascular density. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000100087 |
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| Camargos,A.; Wohlres-Viana,S.; Costa,I.F.; Camargo,L.S.; Ferreira,J.C.; Ramos,A.A.; Oba,E.. |
| ABSTRACT The present study investigated the hormonal profile and expression of prostaglandin F2α (PGF2α), oxytocin and estrogen receptors in uterine tissues of postpartum cows treated with cloprostenol. Twenty Holstein-Zebu crossbred cows were treated with saline solution (treatment CONT) or cloprostenol (treatment CLO), both administered two and five days postpartum. Blood samples were collected on days two, seven, 14, 21 and 28 postpartum for progesterone, PGF2α metabolite (PGFM) and estradiol determination, and endometrial biopsy was performed in order to quantify the expression of oxytocin receptor (OXTR), prostaglandin F receptor (PTGFR) and estrogen receptor 1 (ERS1) genes. In the CLO treatment, expression of OXTR was reduced (P<0.05) but no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PTGFR; ESR1; Progesterone; Estradiol; RT-PCR. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400821 |
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| Paz,R.C.R.; Souza,N.P.; Furtado,P.V.; Brown,J.L.. |
| ABSTRACT In this study, four crab-eating fox females (Cerdocyon thous) maintained at the Federal University of Mato Grosso Zoo, Cuiabá, Brazil, were investigated for 12 months, using feces measurement of estradiol and progesterone concentrations. Fecal collections were performed three times a week for hormone extraction. Two methods of analysis, Elisa (EIA) and Radioimmunoassay (RIA), were used in the measurement of progesterone (P4) and estradiol (E2) metabolites. The aim of this study was to compare and validate two different methods of hormone measurement for C. thous. There were no differences regarding the method used. The Radioimmunoassay technique proved to be more sensitive, however, both showed similar results. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Radioimmunoassay; Elisa; Estradiol; Progesterone; Fecal. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300636 |
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| Beltran,M.P.; Vasconcelos,J.L.M.. |
| Lactating Holstein cows (n=158), at 213±112 days in milking and averaging 26±9kg of milk per day, were randomly assigned to one of three treatment groups: control (CG, n=52, saline), GnRH (GG, n=55, 100g gonadorelin), and hCG (HG, n=51, 2500IU) given five days after artificial insemination (AI). Rectal temperature was taken at the moment of AI and blood samples were collected five, seven, and 12 days after AI. Pregnancy was determined between 42 and 49 days after AI. Concentration of progesterone (P4) in serum (ng/ml, mean±SE) for CG, GG, and HG were, respectively, 2.7±0.4, 2.5±0.4, and 3.2±0.5 on day 5; 4.8±0.4, 4.2±0.4, and 5.7±0.5 on day 7; and 5.2±0.4, 6.9±0.4, and 8.5±0.5 on day 12 after AI. P4 concentration had proportional increase in serum between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cow; Conception; Progesterone; HCG; GnRH. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000300009 |
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| Silva,L.M.; Oliveira,C.H.A.; Silva,A.M.; Montenegro,A.R.; Fernandes,C.C.L.; Silva,C.M.G.; Rossetto,R.; Rondina,D.. |
| ABSTRACT This study evaluated the effect of detoxified castor meal on the reproductive performance, metabolic stress, milk production, and kid development in peripartum goats. The diet of the animals were with (DCM, n= 20) or without (WDCM, n= 21) detoxified castor meal during the entire gestation and until weaning, 60 days post-birth. No differences were observed in the gestation period, litter size, rate of multiple births, and mortality between the two groups. The postpartum plasma concentrations of progesterone remained below 1ng/mL in all animals, thus, confirming the absence of active corpora lutea. The thickness of sternum adipose tissue and loin area, levels of urea and cholesterol, milk production, and daily weight gain in the kids were low in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis L; Postpartum; Lactation; Goat kids; Progesterone. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100136 |
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| Dias,L.M.K.; Sales,J.N.S.; Viau,P.; Barros,M.B.P.; Nicolau,S.S.; Simões,L.M.S.; Alves,N.G.; Alonso,M.A.; Valentim,R.; Oliveira,C.A.. |
| ABSTRACT The aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa Ines ewes. On a random oestrus cycle day, ewes received an intravaginal progesterone device (Primer-PR®, Tecnopec, Brazil). Nine days later (Day 9), 30µg of d-cloprostenol (Prolise®, Syntex, Argentina) and 250IU of eCG (Folligon®, Intervet, Brazil) were administered and the progesterone device was removed. This moment, the ewes were randomly assigned on two groups: Control Group and hCG Group. In the hCG Group, the ewes received 500IU of hCG (Vetecor®, Hertape-Calier, Spain) 24h after device removal. In the Control Group, the ewes did not receive any ovulation inductor. Control and hCG Groups ewes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Progesterone; Follicle; Ovulation; Synchronization. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000100122 |
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| Fonseca,J.F.; Maffili,V.V.; Santos,A.D.F.; Fürst,R.; Prosperi,C.P.; Rovay,H.; Souza,J.M.G.; Torres,C.A.A.. |
| This study reported the effects of prostaglandin (PGF2a) administration 10 days apart on reproductive parameters of cyclic artificial inseminated (AI) nulliparous Alpine (n=9) and Saanen (n=9) goats. Animals received two doses of 22.5mg PGF2a 10 days apart. After 1st and 2nd PGF2a administrations, estrus was monitored at 12 h intervals, with a buck teaser. Plasma progesterone concentration (ng/mL) was determined from blood sampled on day 0 (1st PGF2a) and the following 5, 10 (2nd PGF2a), 15, 20, 25 and 30 days. After the onset of the second estrus, females were transrectally (5 MHz probe) scanned at 4 hour intervals until at least 8h after ovulation. Pregnancy was checked through transrectal ultrasound on days 20, 25, 30, 35 and 90 after insemination. All... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estrus; Ovulation; Progesterone; Embryo loss; Goat. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000200014 |
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| Alves,N.G.; Torres,C.A.A.; Guimarães,J.D.; Moraes,E.A.; Costa,P.B.; Silva,D.R.. |
| RESUMO Os objetivos deste estudo foram relatar a dinâmica folicular ovariana e a concentração plasmática de progesterona durante ciclos estrais de duração irregular em cabras da raça Alpina. Vinte e nove cabras tiveram sua atividade ovariana monitorada diariamente por ultrassonografia transretal durante um, dois ou três períodos interovulatórios consecutivos. Amostras de sangue foram coletadas para análise da concentração plasmática de progesterona. Dos 47 ciclos avaliados, 28 (59,57%) foram de duração normal (17 a 25 dias), sete (14,89%) de curta duração (<17 dias) e 12 (25,53%) de longa duração (>25 dias). Os ciclos estrais de curta duração tiveram 6,14±0,69 dias e uma onda folicular que emergiu no dia 0,43±1,13. Os ciclos estrais de longa duração... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Follicular development; Corpus luteum; Progesterone; Short estrous cycles. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000602017 |
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| MEDINA,RODOLFO A.; OWEN,GARETH I.. |
| Mammalian cells depend on glucose as a major substrate for energy production. Glucose is transported into the cell via facilitative glucose transporters (GLUT) present in all cell types. Many GLUT isoforms have been described and their expression is cell-specific and subject to hormonal and environmental control. The kinetic properties and substrate specificities of the different isoforms are specifically suited to the energy requirements of the particular cell types. Due to the ubiquitousness of these transporters, their differential expression is involved in various disease states such as diabetes, ischemia and cancer. The majority of cancers and isolated cancer cell lines over-express the GLUT family members which are present in the respective tissue of... |
| Tipo: Journal article |
Palavras-chave: GLUT; Glucose transporters; Expression; Cancer; Estrogen; Progesterone; Cell lines. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000100004 |
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| PAPA,Frederico Ozanam; LOPES,Maria Denise; ALVARENGA,Marco Antonio; MEIRA,Cezinande de; LUVIZOTTO,Maria Cecília Rui; LANGONI,Hélio; RIBEIRO,Erley Felix; AZEDO,Antonio Esteves; BOMFIM,Antonio Carlos de Miranda. |
| The present study aimed to diagnose early embryonic death in 128 mares. Blood samples were collected at the 4th, 7th, 10th, 13th, 16th, 19th, 21st and 30th day after ovulation and the diameter of the corpus luteum was measured. The diameter and characteristics of the embryonic vesicle were evaluated by ultrasonography. Microbiology, cytology and histopathology were carried out in mares with embryonic death. Plasma oestrogen and progesterone concentration were measured by radioimmunoassay. From 128 mares, 17 (13.28%) showed early embryonic death. The embryonic losses took place at 19 days of pregnancy in 47.05% and at 21 days of pregnancy in 29.4% of the mares. The diameter of the corpus luteum in the mares that maintained pregnancy was similar to those... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Embryo mortality; Progesterone; Estrogen; Histopathology; Equine. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000400005 |
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| Maia,O.B.; Jácomo,A.T.A.; Bringel,B.A.; Kashivakura,C.K.; Oliveira,C.A.; Teodoro,L.O.F.; Silveira,L.; Teixeira da Costa,M.E.L.; Malta,M.C.C.; Furtado,M.M.; Torres,N.M.; Mattos,P.S.R.; Viau,.P; Lima,T.F.G.; Morato,R.G.. |
| Serum hormone levels were compared between captive and free-living maned wolves and seasonal variations of sex hormones were studied. Blood samples were collected from 16 male and 26 female adult animals from Brazilian zoos, and from 30 male and 24 female free-living adults to determine serum progesterone and testosterone by radioimmunoassay. Serum testosterone concentrations varied (P < 0.05) across seasons for 16 captive males, being higher in autumn (2184.7 ± 355.1 pg/mL) than in summer (1080.7 ± 205.4 pg/mL), winter (1270.1 ± 276.6 pg/mL) and spring (963.9 ± 248.1 pg/mL), although they did not differ between summer, winter and spring. Testosterone concentration of 30 free-living males differed (P < 0.05) between autumn (824.1 ± 512.2 pg/mL),... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Maned wolf Chrysocyon brachyurus; Progesterone; Testosterone; Radioimmunoassay; Reproduction. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200015 |
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| Registros recuperados: 62 | |
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