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Registros recuperados: 5
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Delaying farrowing using intravaginal devices impregnated with progestagen does not affect the proportion of piglets born alive Ciência Rural
Freling,Gabriel Fernando; Gasperin,Bernardo Garziera; Ferreira,Rogério; Cesaro,Matheus Pedroti; Oliveira,João Francisco; Bordignon,Vilceu; Gonçalves,Paulo Bayard Dias.
The objective of this study was to evaluate the efficiency of progestagen intravaginal devices (IVDs) in preventing parturition in sows by determining the effect of delaying parturition on the alive/total born piglets ratio. Evaluations of IVDs containing 0.5, 1.0 or 1.5g progesterone (P4) showed they were not effective in delaying parturition at any dosage tested. In a second experiment, seventy-five sows at day 112 of pregnancy were equally distributed (n=15 per group) in the following treatments: prostaglandin (PGF2α; 250µg sodium cloprostenol; control group) or PGF2α and simultaneous insertion of an IVD containing medroxyprogesterone acetate (MPA) for 48h. Control sows initiated labor 27.7±1.6h after PGF2α injection. The mean time (±SEM) between PGF2α...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Programmed farrowing; Alive/total born piglets ratio; Medroxyprogesterone acetate.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000700018
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Effect of medroxyprogesterone acetate on thyrotropin secretion in adult and old female rats BJMBR
Moreira,R.M.; Borges,P.P.; Lisboa,P.C.; Curty,F.H.; Moura,E.G.; Pazos-Moura,C.C..
Steroid hormones have been implicated in the modulation of TSH secretion; however, there are few and controversial data regarding the effect of progesterone (Pg) on TSH secretion. Medroxyprogesterone acetate (MPA) is a synthetic alpha-hydroxyprogesterone analog that has been extensively employed in therapeutics for its Pg-like actions, but that also has some glucocorticoid and androgen activity. Both hormones have been shown to interfere with TSH secretion. The objective of the present study was to investigate the effects of MPA or Pg administration to ovariectomized (OVX) rats on in vivo and in vitro TSH release and pituitary TSH content. The treatment of adult OVX rats with MPA (0.25 mg/100 g body weight, sc, daily for 9 days) induced a significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medroxyprogesterone acetate; Progesterone; Thyrotropin; Aging; Ovariectomy; Thyrotropin-releasing hormone.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000900020
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Estrus presentation and distribution in ewes treated with intravaginal sponges impregnated with medroxyprogesterone acetate (MAP) in combination with pregnant mare serum gonadotropin (PMSG) Braz. J. Vet. Res. Anim. Sci.
SIMONETTI,Laura; RAMOS,Guillermo; GARDÓN,Juan Carlos.
The objectives of this study were: 1) to determine estrus presentation and distribution following a conventional method of estrus synchronization (progestagen-PMSG treatment) in an ewe herd and 2) to analyze estrus presentation and distribution in adult ewes and ewe lambs. During spring a total of 300 cyclic Merino ewes, including 231 adult ewes and 69 ewe lambs were treated with intravaginal sponges impregnated with 60 mg medroxyprogesterone acetate (MAP). After 14 days sponges were removed and 375 IU pregnant mare serum gonadotropin (PMSG) were administered i.m. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks at 4-hours intervals. Sponge losses, estrus synchronization and distribution were analyzed for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; PMSG; Sponges.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500002
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Quantitative Analysis of Collagen Fibrillar Structure in Canine Uterus Exposed to Acetate of Medroxyprogesterone Using Second Harmonic Generation Microscopy International Journal of Morphology
Salinas,Paulo; Miglino,Maria Angélica; del Sol,Mariano.
Collagen is the most abundant structural protein found in organs and is responsible for providing tissues with structure and function. In order to investigate in canine uteri the potential effect of medroxyprogesterone acetate (MPA) on the changes in collagen deposition were grouped as nulliparous (n=11), multiparous (n=11) and treated with MPA (n=11; nulliparous with two treatments; 5 mg/kg; i.m.). The amount of collagen was studied in the fold and basal regions of the endometrium and myometrium using second harmonic generation with a two-photon spectral confocal microscope, quantified using ImageJ software with a color segmentation plugin, was expressed as fraction area (%) and analyzed by ANOVA (p<0,05). No differences were observed between groups in...
Tipo: Journal article Palavras-chave: Canine; Medroxyprogesterone acetate; Collagen; Second harmonic generation.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100025
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Residual levels on medroxyprogesterone acetate (MAP) impregnated sponges after estrus synchronization treatment in cyclic ewes Braz. J. Vet. Res. Anim. Sci.
SIMONETTI,Laura; GARDÓN,Juan Carlos; RAMOS,Guillermo.
A pool of polyurethane sponges impregnated with medroxyprogesterone acetate (MAP) was prepared. Real level of progestagen on sponges was checked prior to sponge treatment insertion. During spring a total of 126 cyclic Merino ewes were intravaginally treated with MAP-impregnated pessaries for the synchronization of estrus. After 14 days treatment, sponges were removed. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks twice a day. Ewes in estrus were artificially inseminated with fresh diluted semen containing a dose of 300x10(6) total sperm. Artificial insemination was performed 12 hours after estrus presentation. Residual levels of MAP (RMAP) on removed sponges were measured by spectrophotometry at 241 nM...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; Fertility.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500003
Registros recuperados: 5
Primeira ... 1 ... Última
 

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