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| Registros recuperados: 22 | |
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| Guinand, B.; Chauvel, C.; Lechene, M.; Tournois, J.; Tsigenopoulos, C. S.; Darnaude, A. M.; Mckenzie, David; Gagnaire, P. A.. |
| In marine fishes, the extent to which spatial patterns induced by selection remain stable across generations remains largely unknown. In the gilthead sea bream Sparus aurata, polymorphisms in the growth hormone (GH) and prolactin (Prl) genes can display high levels of differentiation between marine and lagoon habitats. These genotype-environment associations have been attributed to differential selection following larval settlement, but it remains unclear whether selective mortality during later juvenile stages further shapes genetic differences among habitats. We addressed this question by analysing differentiation patterns at GH and Prl markers together with a set of 21 putatively neutral microsatellite loci. We compared genetic variation of spring... |
| Tipo: Text |
Palavras-chave: Candidate gene; Growth hormone; Prolactin; Genetic differentiation; Amplicon sequencing; Local selection. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00625/73751/74235.pdf |
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| Alfonso Ruiz, Edy. |
| Un estudio genético molecular fue realizado en la región tropical de Chiapas, México, para conocer las características morfométricas y estimar el polimorfismo de los genes Prolactina y Kappa caseína en una población de ganado Suizo Americano. La extracción de ADN se obtuvo de muestras de sangre y mediante PCR-RFLP se determinaron el polimorfismo de prolactina (PRL) y kappa caseína (K-CSN). En los animales en estudio se obtuvieron medidas morfométricas, clasificándolos en grupos dentro de la raza. Usando el PROC GLM de SAS se realizaron análisis exploratorios multivariados de Componentes Principales para definir los morfotipos y mediante el uso del software POPGENE se estimaron distancias e identidades genéticas, así como las frecuencias génicas y... |
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Palavras-chave: Prolactina; K-CSN; Morfometría; Suizo Americano; Prolactin; Morphometrics; American Swiss; Doctorado; Ganadería. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/502 |
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| Alfonso Ruiz, Edy. |
| Un estudio genético molecular fue realizado en la región tropical de Chiapas, México, para conocer las características morfométricas y estimar el polimorfismo de los genes Prolactina y Kappa caseína en una población de ganado Suizo Americano. La extracción de ADN se obtuvo de muestras de sangre y mediante PCR-RFLP se determinaron el polimorfismo de prolactina (PRL) y kappa caseína (K-CSN). En los animales en estudio se obtuvieron medidas morfométricas, clasificándolos en grupos dentro de la raza. Usando el PROC GLM de SAS se realizaron análisis exploratorios multivariados de Componentes Principales para definir los morfotipos y mediante el uso del software POPGENE se estimaron distancias e identidades genéticas, así como las frecuencias génicas y... |
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Palavras-chave: Prolactina; K-CSN; Morfometría; Suizo Americano; Prolactin; Morphometrics; American Swiss; Doctorado; Ganadería. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/502 |
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| Ma,Rong; Jiang,Dongmei; Chen,Ziyu; Kang,Bo. |
| Background Prolactin (PRL) regulates development and reproduction, and its effects are mediated by the prolactin receptor (PRLR). In order to clarify the role of PRLR and PRL in the process of follicular development in the goose ovary, the level of PRLR mRNA expression in the ovary and follicles of the Sichuan white goose was determined, as well as the PRL concentration in ovarian follicles. Results The level of PRLR mRNA in the hierarchical follicles (HFs) initially increased, and subsequently decreased, whereas PRLR expression was initially low and later increased in postovulatory follicles (POFs). The level of PRLR mRNA expression was the highest in the F4 follicles, and lowest in the F1 follicles in all of the examined follicles. Compared with the... |
| Tipo: Journal article |
Palavras-chave: Postovulatory follicle; Preovulatory follicle; Prolactin receptor; Prolactin; Sichuan white goose. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600001 |
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| Srivastav,A.K; Rai,Rubi; Mishra,D; Srivastav,S. K; Suzuki,Nobuo. |
| Cadmium is an important metal for modern industrial processes and, being biologically non-essential, poses health hazards to the organisms. In this study we aimed to evaluate the effect of cadmium exposure on the histo-cytology of prolactin cells in the freshwater catfish, Heteropneustes (H.) fossilis. Fish were subjected to 288 mg/L (0.8 of 96 h LC50) and 72 mg/L (0.2 of 96 h LC50) of cadmium chloride for short-term and long-term, respectively. After sacrificing the fish, the blood was collected on 24, 48, 72 and 96 h in short-term and after 7, 14, 21, and 28 days in long-term experiment and analyzed for plasma calcium levels. Also, pituitary glands were fixed on these intervals. The plasma calcium levels of short-term cadmium exposed fish remain... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cadmium; Fish; Prolactin; Pituitary gland. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432014000300002 |
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| CUNHA,DANIEL A; AMARAL,MARIA EC; CARVALHO,CAROLINA PF; COLLARES-BUZATO,CARLA B; CARNEIRO,EVERARDO M; BOSCHERO,ANTONIO C. |
| During pregnancy and the perinatal period of life, prolactin (PRL) and other lactogenic substances induce adaptation and maturation of the stimulus-secretion coupling system in pancreatic β-cells. Since the SNARE molecules, SNAP-25, syntaxin 1, VAMP-2, and synaptotagmins participate in insulin secretion, we investigated whether the improved secretory response to glucose during these periods involves alteration in the expression of these proteins. mRNA was extracted from neonatal rat islets cultured for 5 days in the presence of PRL and from pregnant rats (17th-18th days of pregnancy) and reverse transcribed. The expression of genes was analyzed by semi-quantitative RT-PCR assay. The expression of proteins was analyzed by Western blotting and... |
| Tipo: Journal article |
Palavras-chave: Insulin; Pancreatic islets; Pregnant rats; Prolactin; SNARE proteins; Synaptotagmin. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000300016 |
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| Özşensoy,Yusuf. |
| ABSTRACT The objective of this study was to investigate polymorphisms both in exons 1 and 3 of prolactin (PRL) gene for milk productivity of Anatolian water buffalo breed in Sivas province in Turkey. Blood samples were collected from 129 male and female water buffaloes and DNA was isolated by using phenol/chloroform method. Samples of DNA were amplified and resulting PCR products were digested with RsaI (for exons 1 and 3) and HaeIII (for exon 1). Allelic polymorphisms were determined by separation of fragments obtained from digested PCR products in 3% agarose gel electrophoresis. AA genotype (HaeIII) and BB genotype (RsaI) of exon 1 and only AA genotype (RsaI) of exon 3 were obtained. No polymorphisms were determined in Anatolian water buffalo breed and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HaeIII; PCR-RFLP; Prolactin; RsaI; Sivas. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100403 |
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| Armada-Dias,L.; Carvalho,J.J.; Breitenbach,M.M.D.; Franci,C.R.; Moura,E.G.. |
| The objective of the present study was to examine whether hypothyroidism affects the reproductive system of adult female rats by evaluating ovarian morphology, uterus weight and the changes in serum and pituitary concentrations of prolactin and gonadotropins. Three-month-old female rats were divided into three groups: control (N = 10), hypothyroid (N = 10), treated with 0.05% 6-propyl-2-thiouracil (PTU) in drinking water for 60 days, and T4-treated group (N = 10), receiving daily sc injections of L-thyroxine (0.8 µg/100 g body weight) during the last 10 days of the experiment. At the end of 50 days of hypothyroidism no hypothyroid animal showed a regular cycle, while 71% of controls as well as the T4-treated rats showed regular cycles. Corpora lutea,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypothyroidism; Prolactin; Gonadotropins; Folliculogenesis; Estrous cycle. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900015 |
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| Maués,L.A.L.; Macchi,B.M.; Crespo-López,M.E.; Nasciutti,L.E.; Picanço-Diniz,D.L.W.; Antunes-Rodrigues,J.; Nascimento,J.L.M. do. |
| Heavy metals, such as methylmercury, are key environmental pollutants that easily reach human beings by bioaccumulation through the food chain. Several reports have demonstrated that endocrine organs, and especially the pituitary gland, are potential targets for mercury accumulation; however, the effects on the regulation of hormonal release are unclear. It has been suggested that serum prolactin could represent a biomarker of heavy metal exposure. The aim of this study was to evaluate the effect of methylmercury on prolactin release and the role of the nitrergic system using prolactin secretory cells (the mammosomatotroph cell line, GH3B6). Exposure to methylmercury (0-100 μM) was cytotoxic in a time- and concentration-dependent manner, with an LC50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mercury; Methylmercury; Prolactin; Oxidative stress; Pituitary; Nitric oxide. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000800691 |
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| Lima,A.P.; Moura,M.D.; Rosa e Silva,A.A.M.. |
| Endometriosis is a progressive estrogen-dependent disease affecting women during their reproductive years. The objective of the present study was to investigate whether endometriosis is associated with stress parameters. We determined cortisol and prolactin levels in serum, peritoneal and follicular fluid from infertile women with endometriosis and fertile women without the disease. The extent of the disease was staged according to the revised American Fertility Society classification (1997). Serum and peritoneal fluid were collected from 49 women aged 19 to 39 years undergoing laparoscopy. Eighteen women had stage I-II endometriosis and 10 had stage III-IV. Controls were 21 women undergoing laparoscopy for tubal sterilization. Follicular fluid was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endometriosis; Stress; Infertility; Prolactin; Cortisol. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000800015 |
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| Romanini,M. C; Paz,D. A.; Rodríguez,N; Rolando,A. N.; Mugnaini,M. T.; Soñez,C. A.; Bozzo,A; Marioli,J. M.; Pastorino,I. C; Gauna,H. F.. |
| The chronic stress induces functional adaptations in the hypothalamo-pituitary- adrenocortical (HPA) and in the sympathetic-medullary-adrenal axis (SAM). Both axis are considered vital regulators of the homeostasis in vertebrates (Seyle, 1936; Ostrandrer et al, 2006. On the other hand, the placenta provides highly specialized functions during gestation that are critical for the normal development of the embryo/fetus (Soares et al., 1991). We hypothesized that the chronic immobilization (IMO) stress in pregnancy rats produces alterations in prolactin concentrations in placental tissue and also changes in the response of SAM axis. Chronic stress by IMO was applied on days 12, 17 and 21 of pregnancy rats. Relative concentrations and localization of placental... |
| Tipo: Journal article |
Palavras-chave: Chronic stress; Placental lactogen; Prolactin; Rat; SAM. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100011 |
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| Serafim,A.P.; Felicio,L.F.. |
| The pregnancy-induced increase in self-licking observed in rats is important for mammary gland development and lactation. Reproductive experience has epidemiologial implications such as a decrease in the incidence of mammary gland cancer in women and it also influences various behavioral, neurochemical and endocrine parameters. The aim of the present study was to investigate the influence of reproductive experience on grooming behavior patterns during pregnancy in rats. Self-grooming behavior was measured in age-matched virgin, primi- and multigravid (days 7, 8, 9, 19, and 20 of pregnancy) rats. General grooming (head, forelimbs and shoulders) was not significantly different among virgin, primi- and multigravid rats during pregnancy. Confirming previous... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Self-licking; Parity; Lactation; Mammary gland; Prolactin; Dopamine. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000300016 |
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| Genaro,G.; Schmidek,W.R.; Franci,C.R.. |
| Studies of behavior, endocrinology and physiology have described experiments in which animals housed in groups or in isolation were normally tested individually. The isolation of the animal from its group for testing is perhaps the most common situation used today in experimental procedures, i.e., there is no consideration of the acute stress which occurs when the animal is submitted to a situation different from that it is normally accustomed to, i.e., group living. In the present study, we used 90 male 120-day-old rats (Rattus norvegicus) divided into 5 groups of 18 animals, which were housed 3 per cage, in a total of 6 cages. The animals were tested individually or with their groups for exploratory behavior. Hormones were determined by radioimmunoassay... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isolation; Group; Stress; Reproduction; ACTH; Luteinizing hormone; Corticosterone; Prolactin. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600008 |
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| Registros recuperados: 22 | |
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