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| Registros recuperados: 19 | |
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| KOWSAR, Rasoul; JIEMTAWEEBOON, Sineenard; SHIRASUNA, Koumei; SHIMIZU, Takashi; SASAKI, Motoki; KITAMURA, Nobuo; MIYAMOTO, Akio; 清水, 隆; 佐々木, 基樹; 宮本, 明夫. |
| This study was to investigate the localization and distribution of eosinophils (EOS) in the bovine oviduct throughout the estrous cycle. Histological studies revealed more abundant EOS in the infundibula of the oviducts ipsilateral to the preovulatory dominant follicle and the ovulated ovary. The number of EOS was higher in the infundibula of the oviducts ipsilateral to the ovulated ovary than those of the oviducts contralateral to the ovulated ovary. The infundibula of the oviducts ipsilateral to the preovulatory dominant follicle had higher number of EOS than those of the oviducts ipsilateral to the mid-cycle corpus luteum. The number of EOS in the isthmus, but not in the ampulla, was higher in the outer layers (tunica muscularis and tunica serosa) than... |
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Palavras-chave: Bovine; Eosinophil; Oviduct; Ovulation. |
| Ano: 2014 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3947 |
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| LIU, Jinghui; A. MAREY, Mohamed; KOWSAR, Rasoul; HAMBRUCH, Nina; SHIMIZU, Takashi; HANEDA, Shingo; MATSUI, Motozumi; SASAKI, Motoki; HAYAKAWA, Hiroyuki; PFARRER, Christiane; MIYAMOTO, Akio; 羽田, 真悟; 松井, 基純; 佐々木, 基樹; 宮本, 明夫. |
| We have previously shown that polymorphonuclear neutrophils (PMNs) are present in bovine oviduct fluid under physiological conditions, and that the oviduct provides a microenvironment that protects sperm from phagocytosis by PMNs. Alpha 1-acid glycoprotein (AGP) is a major acute-phase protein produced mainly in the liver that has immunomodulatory functions. AGP mRNA is expressed in extrahepatic organs, such as the lung, kidney, spleen, lymph node, uterus, and ovary. Therefore, in this study, we investigated, 1) the local production of AGP in the bovine oviduct, 2) the effect of AGP on the phagocytic activity of PMNs for sperm and superoxide production and 3) the impact of AGP desialylation on the PMN phagocytosis of sperm. The AGP gene was expressed in... |
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Palavras-chave: Alpha 1-acid glycoprotein (AGP); Bovine; Oviduct; Phagocytosis; Sperm. |
| Ano: 2014 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3946 |
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| Petrolli,TG; Petrolli,OJ; Girardini,LK; Zotti,MLAN; Baggio,RA; Junqueira,OM. |
| ABSTRACT Laser beak trimming is a promising alternative to conventional hot-blade beak trimming as it is less painful and provides better beak uniformity and better animal welfare. In this study, laser vs. hot-blade beak trimming were compared in 400 Hy-line Brown pullets between 2-16 weeks of age. At 7 days of age, birds were distributed according to a completely randomized design into two treatments, with 10 replicates (pens) of 20 birds each. Birds and feed offer and residues were weekly weighed to determine weight gain, feed intake, and feed conversion ratio. In weeks 4, 8, 12, and 16 weeks, one bird per experimental unit was sacrificed to measure the development of the heart development, liver, proventriculus, gizzard, small intestine, and bursa. And... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal welfare; Layers; Organs; Oviduct. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100123 |
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| MAREY, Mohamed Ali; YOUSEF, Mohamed Samy; LIU, Jinghui; MORITA, Kazuhiro; SASAKI, Motoki; HAYAKAWA, Hiroyuki; SHIMIZU, Takashi; ELSHAHAWY, Ibrahim I.; MIYAMOTO, Akio; 佐々木, 基樹; 清水, 隆; 宮本, 明夫. |
| The oviduct is an active contractile tube that provides the proper environment for sperm transport, capacitation and survival. Oviductal contractions are regulated by autocrine/paracrine secretion of several factors, such as prostaglandins (PGs) and endothelin-1 (EDN-1). We have previously shown that during the preovulatory stage, sperm are exposed to polymorphonuclear neutrophils (PMNs) in the bovine oviduct, and the bovine oviduct epithelial cells (BOECs) secrete molecules including PGE2 that suppress sperm phagocytosis by PMNs in vitro. In this study, we investigated the possible effects of EDN-1 on the phagocytic activity of PMNs toward sperm. The local concentrations of EDN-1 in oviduct fluid and BOEC culture medium ranged from 10–10 to 10–11 M as... |
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Palavras-chave: Endothelin-1; Oviduct; Phagocytosis; Polymorphonuclear neutrophils (PMN); Sperm. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4310 |
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| Teixeira,RSC; Cardoso,WM; Nogueira,GC; Câmara,SR; Romao,JM; Siqueira,AA; Sampaio,FAC; Moraes,TGV; Campello,CC; Buxade,CC. |
| This study aimed at evaluating the alternative method of zinc oxide and fasting to induce molt in Japanese quails. A total number of 190 48-week-old quails was used. They were at end of laying cycle, and presented low egg production. Quails molted by zinc oxide (Z) were fed a diet containing 25,000 ppm of zinc oxide, and received water ad libitum. Quails treated by fasting (F) received no feed and a day of water restriction. The treatment period was determined by the experimental level of body weight loss (BWL). Birds were submitted to different levels of BWL in order to analyze reproductive system regression (ovary + oviduct), and livability. The following groups were established according to their BWL: Control (untreated quails); F25 (25% BWL by F); F35... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forced molting; Ovary; Oviduct; Quail; Zinc oxide. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200002 |
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| Shaoxia,PU; Changwei,QU; Zhi,LI; Yansen,LI; ChunMei,LI. |
| Abstract In order to investigate the expression levels of nerve growth factor (NGF) and its receptors (TrkA and p75) in prehierarchical follicles and oviducts of hens, five 130-day-old laying hens were examined by immunohistochemistry and RT-PCR analysis. NGF and its receptors were expressed in theca cells and granulosa cells of prehierarchical follicles, and they were also expressed in the epithelial cells of oviducts. The expression of the genes NGF, TrkA and p75 were significantly different in prehierarchical follicles (p<0.05 or p<0.01), and NGF and TrkA gene expression was significantly different in different parts of oviduct (p<0.05 or p<0.01). The expression of NGF and p75 mRNA levels was highest in large white follicle (LWF), as well as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NGF; TrkA; P75; Prehierarchical follicle; Oviduct; Laying hen. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100187 |
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| PEÑARROJA-MATUTAN0,C; PARADA-BUSTAMANTE,A; ORIHUELA,P A; RÍOS,M; VELASQUEZ,LUIS A; CROXATTO,H B. |
| Estradiol (E2) accelerates oviductal egg transport through nongenomic pathways involving oviductal protein phosphorylation in non-mated rats, and through genomic pathways in mated rats. Here we investigated the ability of cervico-vaginal stimulation (CVS) to switch the mode of action of E2 in the absence of other male-associated components. Pro-estrous rats were subjected to CVS with a glass rod and 12 hours later were injected subcutaneously with E2 and intrabursally with the RNA synthesis inhibitor Actinomycin D or the protein phosphorylation inhibitor H-89. The number of eggs in the oviduct, assessed 24 h later, showed that Actinomycin D, but not H-89 blocked the E2-induced egg transport acceleration. This clearly indicates that CVS alone, without other... |
| Tipo: Journal article |
Palavras-chave: Mating; Oviduct; Estradiol; Signaling pathways; Prolactin receptor; Egg transport; Rat. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200012 |
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| RIOS,MARIANA; VENEGAS,ALEJANDRO; CROXATTO,HORACIO B. |
| Intra-oviductal administration of RNA obtained from oviducts of estradiol-treated rats resulted in accelerated egg transport (<A HREF="#rios97">Ríos et al., 1997</A>). It is probable that estradiol-induced messenger RNA (mRNA) entered oviductal cells and was translated into the proteins involved in accelerated egg transport. In order to test this interpretation we deposited in vivo 50 µg of pure ß-galactosidase (ß-gal) mRNA, 50 µg of pure DNA from the reporter gene ß-gal under SV40 promoter or the vehicle (control oviducts) into the oviductal lumen of rats. Twenty four hours later the ß-gal activity was assayed in oviductal tissue homogenates using o-nitrophenyl-ß-D-galactopyranoside as a substrate. The administration of ß-gal mRNA and pSVBgal... |
| Tipo: Journal article |
Palavras-chave: SS-galactosidase; Gene transfer; Oviduct. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300007 |
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| Khokhlov,R. YU.; Kuznetcov,S. I.. |
| The authors have used non-laying and laying hens (Lohmann Brown), in order to study morphological aspects development of tunica mucosa of the oviduct. The results showed that the oviduct of the hen is well-developed at the left side, atrophied at the right side and consists of five different regions: infundibulum, magnum, isthmus, shell-gland and excretory section (vagina). During 1-120 days in oviduct is the most advanced caudal part, where height and width folds of a tunica mucosa is more than in cranial part, that probably, is caused with the future function of these departments. In the period oviposition (150-540 days), the tunica mucosa is most advanced in such departments, as: magnum, isthmus, shell-gland |
| Tipo: Journal article |
Palavras-chave: Oviduct; Anatomy; Histology; Morphology. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000200014 |
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| Codón,Stella Maris; Casanave,Emma Beatriz. |
| The morphological features of the oviduct in the armadillo Chaetophractus villosus (Desmarest, 1804) were studied. In the simple columnar epithelium, ciliated cells, secretory cells, and cells of the bottom of the folds are described. The most remarkable findings are the increase in number of ciliated cells, when present, from the fimbriae to the uterus, being the isthmus practically lined by ciliated cells, and that secretory cells are more abundant in the apical zone of the ampulla and fimbriae, than in the isthmus. Morphological changes along the year in the different portions are described. |
| Tipo: Journal article |
Palavras-chave: Xenarthra; Armadillo; Chaetophractus villosus; Morphology; Oviduct. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000200009 |
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| NOZAKI, Hirofumi; WIJAYAGUNAWARDANE, Missaka P.B.; KODITUWAKKU, Suranga P.; YOSHIDA, Takashi; NAKAMURA, Tadashi; ARAI, Ikichi; URASHIMA, Tadasu; MIYAMOTO, Akio; 中村, 正; 浦島, 匡; 宮本, 明夫. |
| N-acetylglucosaminyltransferase I (GnT I; EC 2.4.1.101), which catalyzes the first step in the conversion of oligomannose to complex or hybrid N-glycans of glycoproteins, was found in media cultured with bovine oviduct epithelial cells (BOEC) obtained from non-pregnant cows during the follicular phase. Combined treatment with specific hormones increased GnT I release from BOEC. Luteinizing hormone (LH; 10 ng/ml) alone slightly, but together with 17β-estradiol (E2; 1 ng/ml), synergistically increased GnT I activity. Vascular endothelial growth factor (VEGF) and tumor necrosis factor (TNF) α, which have been shown to have their highest activities in the bovine oviduct during the periovulatory period, also increased in GnT I activity. This study provides the... |
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Palavras-chave: Bovine; Luteinizing hormone (LH); N-acetylglucosaminyltransferase I; Oviduct; Tumor necrosis factor (TNF) α; Vascular endothelial growth factor (VEGF). |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2978 |
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| Zampini,Renato; Apichela,Silvana; Sari,Luciana; Angiono,Georgina; Lombardo,Daniel; Miceli,Dora; Argañaraz,Martin. |
| Oviductal molecules have the potential to improve the reproductive biotechnologies. In camelids, knowledge and assessment of the oviductal environment are necessary to successfully develop species-specific reproductive technologies, especially because of the camelids reproductive particularities. Among the oviductal factors, the matrix metalloproteinases/tissue inhibitor of matrix metalloproteinases system (MMPs/TIMPs) should be investigated more thoroughly due to their participation in reproductive processes. Consequently, the current study assayed gene and protein expression of MMPs throughout the llama oviduct. MMPs zymogen and active forms in the oviductal fluid were also characterized. MMP2 and MMP9 transcripts were detected in ampulla, isthmus,... |
| Tipo: Journal article |
Palavras-chave: Oviduct; Llama; MMPs; TIMPs; Gene expression levels. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200038 |
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| Registros recuperados: 19 | |
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