Download Consulta: subjectFacets:"Oviduct" Registros recuperados: 17 Data

Consulta: subjectFacets:"Oviduct"
Registros recuperados: 17
Data/hora: 09/06/2017 12:11:16
A segment and epithelium specific messenger ribonucleic acid fragment up-regulated by estradiol in
the rat oviduct
Provedor de dados: 48
Autores: RIOS,MARIANA; OJEDA,SUANY; VELASQUEZ,LUIS A; MAISEY,KEVIN; CROXATTO,HORACIO B.
Estradiol accelerates oviductal embryo transport in the rat through changes of genomic expression in oviductal cells. However, the
genes involved are unknown. We used a differential display by reverse transcription-polymerase chain reaction to detect estradiol
(E2)-dependent genes in the rat oviduct. Rats on day 2 of pregnancy were untreated or treated with 10 µg of E2 and the oviducts
were extracted at 30, 180 and 360 min later and used to isolate RNA. Products of reverse transcriptase-PCR, made with pairs of
arbitrary and oligo-deoxythymidine primers, were separated on denaturing polyacrylamide gels and candidate bands were excised
and reamplified. Truly positive cDNA fragments determined by a single strand conformation polymorphism assay were cloned
and...
Tipo: Journal article
Palavras-chave: Differential display; Estradiol; Gene; MRNA; Oviduct.
Ano: 2001
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602001000100011
Accumulation of Eosinophils in the Infundibulum of the Bovine Oviduct Just after Ovulation
Provedor de dados: 19
Autores: 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...
Palavras-chave: Bovine; Eosinophil; Oviduct; Ovulation.
Ano: 2014
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3947
An Acute-phase Protein as a Regulator of Sperm Survival in the Bovine Oviduct: Alpha
1-acid-glycoprotein Impairs Neutrophil Phagocytosis of Sperm In Vitro
Provedor de dados: 19
Autores: 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...
Palavras-chave: Alpha 1-acid glycoprotein (AGP); Bovine; Oviduct; Phagocytosis; Sperm.
Ano: 2014
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3946
Endothelin-1 downregulates sperm phagocytosis by neutrophils in vitro: a physiological implication in
bovine oviduct immunity
Provedor de dados: 19
Autores: 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...
Palavras-chave: Endothelin-1; Oviduct; Phagocytosis; Polymorphonuclear neutrophils (PMN); Sperm.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4310
Evaluation of induced molting methods on the livability and reproductive system regression of
Japanese quails (Coturnix japonica)
Provedor de dados: 89
Autores: 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: Journal 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
Expression of Nerve Growth Factor (NGF) and Its Receptors TrkA and p75 in the Reproductive
Organs of Laying Hens
Provedor de dados: 89
Autores: 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: Journal 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
Genital Sensory Stimulation Shifts Estradiol Intraoviductal Signaling from Nongenomic to Genomic
Pathways, Independently from Prolactin Surges
Provedor de dados: 48
Autores: 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
Histologia e histoquímica do magno, um dos segmentos do oviduto de Numida meleagris (Linné)
(Numididae, Galliformes)
Provedor de dados: 104
Autores: Ribeiro,Maria das Graças; Teles,Maria Eloiza de Oliveira; Maruch,Sandra Maria das Graças.
Numida meleagris (Linné, 1758) is an african bird that was brought to Brazil. As the bird adapted to the climate of this new
habitat and spread ali around the country, it is nowadays part of our avifauna. The present study continues topographic and
morphofunctional researches on the female genital apparatus of this species, since it describes histological and histochemical
aspects of magnum, a segment of oviduct. Magnum was dissected and processed according to routine and histochemical staining
procedures to detect glycogen and mucous substances in the epithelial tissue and mucous glands. Besides focusing morphological
aspects, the study compares the data obtained with those of other species aiming to contribute to the enlargement of the
knowledge on...
Tipo: Journal article
Palavras-chave: Galliformes; Numididae; Female genital; Oviduct; Magnum.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100020
HISTOLOGICAL DESCRIPTION OF THE REPRODUCTIVE SYSTEM OF MALE AND
FEMALE HATCHLINGS OF THE MAGDALENA RIVER TURTLE (Podocnemis lewyana)
Provedor de dados: 37
Autores: SÁNCHEZ-OSPINA,ANDRÉS C; RODRIGUEZ,BERARDO; CEBALLOS,CLAUDIA P.
In this study we described the macroscopic and microscopic histology of the reproductive system of male and female Podocnemis
lewyana neonates (3.5 months old). We found macroscopic differences in the morphology of the gonads between the sexes, with
ovaries being twice as long as testes, and testes being twice as wide as ovaries. Microscopically, we identified several immature
elements, such as the lack of a muscle layer in the oviduct of females, and simple epithelia instead of pseudostratified epithelia in
the oviduct and epididymis described in reptile adults. We also found a black pigment observed macroscopically in the
mesovarium, and macroscopically and histologically in the epididymis. This pigment is consistent with the center of
melano-macrophages...
Tipo: Journal article
Palavras-chave: Epididymis; Histology; Ovary; Oviduct; Pigment; Testis.
Ano: 2014
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2014000300009
In vivo expression of ß-galactosidase by rat oviduct exposed to naked DNA or messenger RNA
Provedor de dados: 48
Autores: 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
Morphogenesis of a Tunica Mucosa of Oviduct of the Hens
Provedor de dados: 77
Autores: 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
Morphology and Histological Annual Changes of the Oviduct of Chaetophractus villosus (Mammalia,
Xenarthra, Dasypodidae)
Provedor de dados: 77
Autores: 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
Morphology of an Infundibulum of the Oviduct of the Sexually Mature Hens
Provedor de dados: 77
Autores: Khokhlov,R.Y.
Studied functional morphology of an infundibulum oviduct of the hens in an age interval 150-540 days. As indicators of
development the following parameters served: length, weight, diameter of a infundibulum, sizes epithelial cells, height and width
folds of a túnica mucosa, histological structure of a wall of a infundibulum. The results show dynamical increase of investigated
parameters with 150- till 360-day's age, with their subsequent decrease to 540-day's age.
Tipo: Journal article
Palavras-chave: Oviduct; Reproductive system; Morphology; Layer.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000400016
Morphology of the urogenital papilla and its component ducts in Astyanax altiparanae Garutti
& Britski, 2000 (Characiformes: Characidae)
Provedor de dados: 83
Autores: Siqueira-Silva,Diógenes Henrique de; Silva,Amanda Pereira dos Santos; Ninhaus-Silveira,Alexandre;
Veríssimo-Silveira,Rosicleire.
The histological description of the urogenital papilla is an important tool to comprehension of the reproductive mechanisms in
fish, as well as a pre-requisite to germ cell transplantation in adult fish, besides to be a good biological indicator to environmental
changes. Was performed the histological description of the urogenital papilla and its component ducts in the tetra Astyanax
altiparanae. The genital and urinay ducts pass separately throughout most part of its extension, joining in a single duct before
opening. In males this opening is asymmetric and seems to have double origin, being completely surrounded by striated muscle
fibers, while in females it is symmetric and the muscle fibers does not surround it totally. Spermatic duct and oviduct...
Tipo: Journal article
Palavras-chave: Fish reproduction; Histological analysis; Oviduct; Sperm duct; Urinary duct.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200309
N-acetylglucosaminyltransferase I Activity of Bovine Oviduct Epithelial Cells: Stimulation by
Luteinizing Hormone, Vascular Endothelial Growth Factor and Tumor Necrosis Factor α
Provedor de dados: 19
Autores: 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...
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
RNA fingerprinting using RAP-PCR identifies an EBAF homologue mRNA differentially expressed in
rat oviduct
Provedor de dados: 47
Autores: Valdecantos,Pablo A.; Argañaraz,Martín E.; Abate,Carlos M.; Miceli,Dora C.
As a step towards the identification of genes preferentially expressed in the oviduct during early rat embryo development, we
isolated a cDNA fragment (Pr14) by using RNA arbitrarily primed PCR (RAP-PCR), being its expression restricted to oviduct and
uterus; its mRNA is mainly expressed in oviduct during late luteal phase and early pregnancy. This fragment is 100% identical to
a rat DNA sequence (Accession No. NW_047400) downstream the terminal exon of a Rattus norvegicus gene (Locus Link
Accession No. LOC289316) similar to ebaf (endometrial bleeding-associated factor), a novel member of the Transforming
Growth Factor superfamily. Northern analyses showed that this sequence hybridizes with 2.9 kb and 4.1 kb mRNAs in early
pregnant rat oviducts. However,...
Tipo: Journal article
Palavras-chave: Differential gene expression; Oviduct; RNA fingerprint; CDNA.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452004000300005
採卵鶏の卵管および黄色卵胞における系統間の差異
Provedor de dados: 19
Autores: 三好, 俊三; 高橋, 洋明; ルック, キィウ
ミン; 口田, 圭吾; 光本, 孝次; MIYOSHI, Shunzo; TAKAHASHI,
Hiroaki; LUC, Kieu Minh; KUCHIDA, Keigo; MITSUMOTO, Takatsugu.
Palavras-chave: 卵管; 膨大部; 卵巣; 黄色卵胞; 採卵鶏; Oviduct; Magnum; Ovary; Follicle; Laying hen.
Ano: 1996
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/444