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| Registros recuperados: 16 | |
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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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| Serakides,R.; Nunes,V.A; Nascimento,E.F.; Serra,G.V.. |
| The influence of the estrous cycle on the thyroid gland was studied. Twenty one five-to-seven-month-old Wistar female rats were divided according to the stage of the estrous cycle in two groups: metaestrus-diestrus and proestrus-estrus. After gross inspection, the thyroids were weighed, sampled, and processed for staining with hematoxilyn-eosin. Seric concentrations of total T4, free T4, total T3, TSH, progesterone, and estradiol were measured. The values of estradiol were significantly higher in the proestrus-estrus stage. However, no significant differences in the plasmatic concentrations of progesterone, free T4, total T4 and TSH throughout the cycle were found. The results of the morphometric study of the thyroid did not indicate any significant... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Rat; Thyroid; Estrous cycle. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352002000100017 |
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| Gomes,C.M.; Frantz,P.J.; Sanvitto,G.L.; Anselmo-Franci,J.A.; Lucion,A.B.. |
| Since previous work has shown that stimulation early in life decreases sexual receptiveness as measured by the female lordosis quotient, we suggested that neonatal handling could affect the function of the hypothalamus-pituitary-gonadal axis. The effects of neonatal handling on the estrous cycle and ovulation were analyzed in adult rats. Two groups of animals were studied: intact (no manipulation, N = 10) and handled (N = 11). Pups were either handled daily for 1 min during the first 10 days of life or left undisturbed. At the age of 90 days, a vaginal smear was collected daily at 9:00 a.m. and analyzed for 29 days; at 9:00 a.m. on the day of estrus, animals were anesthetized with thiopental (40 mg/kg, ip), the ovaries were removed and the oviduct was... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Stress; Neonatal handling; Estrous cycle; Ovulation; Female rat. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000010 |
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| Lovick,T.A.. |
| The female brain operates in a constantly changing chemical milieu caused by cyclical changes in gonadal hormones during the estrous cycle (menstrual cycle in women). Such hormones are highly lipophilic and pass readily from the plasma to the brain where they can influence neuronal function. It is becoming clear that the rapid reduction in peripheral circulating progesterone, which occurs during the late diestrous phase of the cycle, can trigger a withdrawal-like response, in which changes in GABA A receptor expression render hyper-responsive certain brain areas involved in processing responses to stressful stimuli. The periaqueductal gray matter (PAG) is recognised as an important region for integrating anxiety/defence responses. Withdrawal from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Female; Estrous cycle; Stress; Anxiety; Progesterone; Neurosteroid replacement. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000400005 |
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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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| Cleff,Marlete Brum; Lima,Alzira Pacheco de; Faria,Renata Osório de; Meinerz,Ana Raquel Mano; Antunes,Tatiana de Ávila; Araújo,Flávia Biasoli de; Nascente,Patrícia da Silva; Nobre,Márcia de Oliveira; Meireles,Mário Carlos Araújo. |
| Yeasts are commensal organisms found in the skin, genital and gastrointestinal tracts, and other mucosa in mammalians. Candida spp has been frequently isolated from domestic and sylvan animals. Yeast isolation from vaginal mucus is frequent in women, especially of Candida genus. In canine females, however, studies about vaginal fungal microbiota are rare and the connection with estrous cycle is unknown. The purpose of this study was to isolate yeast 5 of Candida genus from healthy canine females and identify the isolated species, establishing their connection with estrous cycle phases. Two hundred twenty-four samples taken from vaginal mucus of 14 canine females were analyzed in this study. Candida spp was observed in 83 (37%) from these samples; nine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Candida spp; Canine females; Estrous cycle. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000200018 |
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| Barros,Heitor Arôxa; Moraes,Eleonora Figueredo de; Maia,Carina Scanoni; Teixeira,Álvaro Aguiar Coelho; Teixeira,ValériaWanderley. |
| The study aimed at obtaining basic information about estrous cycle in rats treated with dexamethasone, for polycystic ovaries, induced by constant illumination. It was used 30 female rats (Rattus norvegicus albinus) from the lineage Wistar, with 90 days years old, divided according the following groups: Group I - rats maintained in a light/dark cycle for 12/12 hours, and after 100 days submitted to the cyclicity evaluation (control); Group II - rats maintained under constant illumination during 100 days and after submitted to the cyclicity evaluation; Group III - rats maintained under constant illumination during 100 days and after treated with dexamethasone for five days, and, then, submitted to the cyclicity evaluation. The results showed that after 100... |
| Tipo: Journal article |
Palavras-chave: Estrous cycle; Polycystic ovaries; Dexamethasone; Rats. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400035 |
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| Kage,Devendra N; Malashetty,Vijaykumar B; Seetharam,Y. N; Suresh,P; Patil,Saraswati B. |
| Ethanol extract of whole plant of Trichosanthes cucumerina L. var. cucumerina was evaluated for antiovulatory activity in adult rats. The ethanol extract at the doses 200 and 400mg/kg body weight (orally) affected the normal estrous cycle showing a significant increase in estrus and metestrus phases and decrease in diestras and proestrus phases. The extract also significantly reduced the number of healthy follicles (Class I-Class VI) and corpora lutea and increased the number of regressing follicles (Stage IA, Stage IB, Stage IIA, and Stage IIB). The protein and glycogen content in the ovaries were significantly reduced in treated rats. The cholesterol level was significantly increased, whereas, the enzyme activities like 3b-HSD and 17b-HSD were... |
| Tipo: Journal article |
Palavras-chave: Trichosanthes cucumerina L. var. cucumerina; Antifertility; Folliculogenesis; Estrous cycle; Gonadotropins; 3 b-HSD; 17 b-HSD activity; Ovarian steroidogenesis. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100030 |
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| Abubakar, Y.U.; Oyedipe, E.O.; Eduvie, L.O.; Ogwu, D.O.; Adeyeye, A.A.. |
| Ten cycling Nigerian West African Dwarf (WAD) ewes were used to determine the effect of Trypanosoma congolense infection on the estrous cycle. The estrus of ewes were synchronized using intravaginal progesterone sponges and divided into 2 groups (A and B) of 5 ewes each after 54 days (3 cycles). The ewes in group A were inoculated with blood containing approximately 5×105 trypanosomes per ml of blood while ewes in group B served as the uninfected control. All the ewes were monitored from infection till the end of the study (56 days). Ewes in the infected group had silent estrus with clinical trypanosomosis that was characterized by undulating parasitemia, intermittent pyrexia, anemia and weight loss. There was no statistical (p > 0.05) difference... |
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Palavras-chave: Infertility; Estrous cycle; Estrus; Trypanosoma congolense; West African dwarf ewe. |
| Ano: 2015 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4244 |
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| LEE, Dong-Soo; YANAGIMOTO UETA, Yoshiko; XUAN, Xuenan; IGARASHI, Ikuo; FUJISAKI, Kozo; SUGIMOTO, Chihiro; TOYODA, Yutaka; SUZUKI, Hiroshi; 玄, 学南; 五十嵐, 郁男; 鈴木, 宏志. |
| The mRNA expression patterns of EGF, HB-EGF, Amphiregulin, EGF receptor, IGF-1, CSF-1, IL-1 alpha, IL-1 beta, IL-1 receptor type 1, IL-1 receptor antagonist, LIF, COX-1, COX-2, Mucin-1, calcitonin, and rat USAG-1 mouse homologue, all of which are involved in the process of conceptus implantation to the endometrium, were examined during the estrous cycle by means of real-time quantitative PCR. COX-2, HB-EGF, LIF, Mucin-1, CSF-1, IL-1 alpha, IL-1 beta, and IL-1 receptor antagonist were temporally regulated during the estrous cycle and highly expressed during the estrous stage. In the case of COX-1, EGF, IGF-1, and EGF receptor, the highest mRNA expression was during the diestrous stage. In contrast, the rat USAG-1 mouse homologue mRNA expression did not... |
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Palavras-chave: Estrous cycle; Implantation; Mice; Ovarian hormone. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3022 |
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| Alves,Nadja Gomes; Torres,Ciro Alexandre Alves; Guimarães,José Domingos; Moraes,Elenice Andrade; Rodrigues,Marcelo Teixeira; Cecon,Paulo Roberto; Bitencourt,Luciene Lignani; Amorim,Lincoln da Silva. |
| To evaluate the effect of using urea in the diet on ovarian follicular dynamics and plasma urea and progesterone concentration, an experiment was carried out with 29 Alpine goats randomly distributed into four diets, each one containing 0%; 0.73%; 1.46% or 2.24% of urea on total dry matter. The follicular dynamics was monitored daily by ultrasonography. The estrous cycles were characterized by occurrence of two, three, four or five follicular waves. The emergence day of the first follicular wave in cycles with two waves, the length of the third wave and the maximum diameter of the largest follicle of the third wave in cycles with three waves presented a quadratic behavior according to the percentage of urea in the diets. In cycles with four waves, the urea... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corpus luteum; Estrous cycle; Follicular development; Protein. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700016 |
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| Registros recuperados: 16 | |
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