Consulta: subjectFacets:"Luteinizing hormone"
Registros recuperados: 5
Data/hora: 11/06/2024 00:51:43

Hormonal and Histomorphologic Effects of Azadirachta indica leaf Extract on the Pars Anterior of Wistar Rats
Provedor de dados: International Journal of Morphology
Autores: Akpantah,Amabe O; Ekong,Moses B; Obeten,Kebe E; Akpaso,Mfon I; Ekanem,Theresa B.
Azadirachta indica is a tree whose medicinal value is unquantifiable. Any part of the tree can be used in the treatment of malarial infection. Reports have indicated its antifertility effects, and this necessitated this study on the effects of the methanol leaf extract on serum luteinizing (LH) and follicle stimulating hormones (FSH) levels and the histomorphology of the pars anterior of Wistar rats. Thirty adult male Wistar rats were equally divided into 3 groups of A, B and C. Group A was the control and the animals received distilled water orally, while groups B and C were treated with 200mg/kg and 400mg/kg respectively of the leaf extract by oral gavage for fourteen days. On day fifteen, the animals were sacrificed by chloroform anaesthesia. Blood was...
Tipo: Journal article
Palavras-chave: Azadirachta indica; Pars anterior; Luteinizing hormone; Follicle stimulating hormone; Wistar rat.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000200024

Social condition affects hormone secretion and exploratory behavior in rats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: 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

Luteinizing hormone reduction by the male potency herb, Butea superba Roxb.
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Malaivijitnond,S.; Ketsuwan,A.; Watanabe,G.; Taya,K.; Cherdshewasart,W.
To determine if Butea superba Roxb., a traditional Thai male potency herb, has androgenic activity in 60-day-old male Wistar rats, we measured its effects on the pituitary-testicular axis and sex organs. Intact and orchidectomized adult male rats were subdivided into five groups (10 rats/group): distilled water, Butea superba (BS)-10, BS-50, BS-250, and testosterone propionate (TP). They received 0, 10, 50, and 250 mg·kg body weight-1·day-1 BS in distilled water by gavage and 6 mg·kg body weight-1·day-1 TP sc, respectively, during the 30-day treatment period. Blood was collected every 15 days and luteinizing hormone (LH), follicle-stimulating hormone (FSH) and testosterone were measured. Changes of weight and histological appearance of sex organs were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butea superba; Testosterone propionate; Testis; Seminal vesicle; Luteinizing hormone.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000900006

Prazosin blocks the glutamatergic effects of N-methyl-D-aspartic acid on lordosis behavior and luteinizing hormone secretion in the estrogen-primed female rat
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Landa,A.I.; Cabrera,R.J.; Gargiulo,P.A.
We have observed that intracerebroventricular (icv) injection of selective N-methyl-D-aspartic acid (NMDA)-type glutamatergic receptor antagonists inhibits lordosis in ovariectomized (OVX), estrogen-primed rats receiving progesterone or luteinizing hormone-releasing hormone (LHRH). When NMDA was injected into OVX estrogen-primed rats, it induced a significant increase in lordosis. The interaction between LHRH and glutamate was previously explored by us and another groups. The noradrenergic systems have a functional role in the regulation of LHRH release. The purpose of the present study was to explore the interaction between glutamatergic and noradrenergic transmission. The action of prazosin, an alpha1- and alpha2b-noradrenergic antagonist, was studied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sexual behavior; Glutamate; Luteinizing hormone; Noradrenergic transmission; Prazosin; N-methyl-D-aspartic acid.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000300007

Antisense mRNA for NPY-Y1 receptor in the medial preoptic area increases prolactin secretion
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Silveira,N.A.; Franci,C.R.
We investigated the participation of neuropeptide Y-Y1 receptors within the medial preoptic area in luteinizing hormone, follicle-stimulating hormone and prolactin release. Four bilateral microinjections of sense (control) or antisense 18-base oligonucleotides of messenger ribonucleic acid (mRNA) (250 ng) corresponding to the NH2-terminus of the neuropeptide Y1 receptor were performed at 12-h intervals for two days into the medial preoptic area of ovariectomized Wistar rats (N = 16), weighing 180 to 200 g, treated with estrogen (50 µg) and progesterone (25 mg) two days before the experiments between 8.00 and 10:00 a.m. Blockade of Y1 receptor synthesis in the medial preoptic area by the antisense mRNA did not change plasma luteinizing hormone or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neuropeptide Y; Medial preoptic area; Neuropeptide Y-Y1 receptor; Prolactin; MRNA for neuropeptide; Y-Y1 receptor; Luteinizing hormone; Follicle-stimulating hormone.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000900016