|
|
|
| Registros recuperados: 54 | |
|
| |
|
| |
|
| |
|
|
| Casanova,Marta B.. |
| Caveolin-1, the first member of caveolin family reported, is recognized as the structural component of caveola, a plasma membrane invagination or vesicles that are a subcompartment distinct from clathrin-coated pits. This protein is also known to be involved in cholesterol trafficking. The aim of this study was to determine the expression of caveolin-1 in adult rat Leydig cells. Testis sections incubated with an antibody to caveolin-1 showed, by immunohistochemistry, a moderate number of Leydig cells with different degrees of immunoreaction and a strong reaction in endothelial cells and in the lamina propia of seminiferous tubules. Caveolin-1 was detected in the cell cytoplasm with a granular pattern and on the cell surface of Leydig cells cultured 24 h on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Testis; Leydig cells; Caveolin-1. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000300003 |
| |
|
|
| Zhang,Tianxiang; Peng,Dong; Qi,Lei; Li,Weixuan; Fan,Mengyuan; Shen,Jiachen; Yang,Liangliang; Wang,Yihua; Wang,Wenxia; Hu,Xiaolong; Cai,Ruibo; Zhou,Ran; Wei,Yuting; Zhou,Juntong; Yang,Shuang; Hu,Defu; Liu,Shuqiang. |
| Abstract Background The muskrat is a seasonal breeder. Males secrete musk to attract females during the breeding season. The testosterone binding to the androgen receptor (AR) in musk glands of muskrat may play an important role conducting the musk secretion process. Methods The musk gland, testis and blood samples of musk rats are collected in both breeding and non-breeding seasons. Some part of the samples are kept in liquid nitrogen for transcriptome analysis and Western blotting test. Some part of the samples are kept in 70% alcohol for histology experiment, blood samples are kept at −20 °C for the serum testosterone measurement experiment. Results This study demonstrates that the quantity of secreted musk, the volume of the musk... |
| Tipo: Journal article |
Palavras-chave: Muskrat; Musk gland; Testis; AR; Seasonal development. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100201 |
| |
|
|
| Shen,Cong-Cong; Kang,Yu-Huan; Yu,Lin; Cui,Dan-Dan; He,Yi; Yang,Jin-Liang; Gou,Lan-Tu. |
| BACKGROUND: Testis-expressed sequence 101 (TEX101) was found to be highly expressed in testis and involved in acrosome reaction in previous studies. Recently, the metastasis suppressor function of TEX101 in cancer was disclosed, but the comprehensive investigation of its expression has rarely been reported. In this study, the expression features of TEX101 in normal human organs and seminoma were systematically analyzed. RESULTS: Immunohistochemistry demonstrated intense staining of TEX101 in human testis tissues; however, its expression in 27 other types of normal human organs, including the ovary, was negligible. Higher expression of TEX101 was observed in the spermatocytes and spermatids of the testis, but relatively lower staining was detected in... |
| Tipo: Journal article |
Palavras-chave: Immunohistochemistry; TEX101; Seminoma; Testis; Western blotting. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100075 |
| |
|
|
| Silva,Doris; Lizama,Carlos; Tapia,Verónica; Moreno,Ricardo D. |
| Mammalian germ cell apoptosis plays a key role in controlling the correct number of germ cells supported by Sertoli cells during the first wave of spermatogenesis in mammalian puberty. However, little is known about hormonal factors that could influence the rate of germ cell apoptosis during puberty or adulthood. In this work we evaluate germ cell apoptosis under hypothyroidism induced by goitrogen propylthiouracil (PTU) during the first wave of spermatogenesis. Neonatally administered PTU promoted a delay in the differentiation of Sertoli cells as evaluated by the expression of clusterin using immunohistochemistry and RT-PCR. Clusterin had different expression levels in control and PTU-treated animals, but under both conditions the highest levels were... |
| Tipo: Journal article |
Palavras-chave: Testis; Spermatocyte; Sertoli cell; Caspase; Apoptosis; Thyroid. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200010 |
| |
|
|
| Lagos-Cabré,Raúl; Moreno,Ricardo D. |
| Bisphenol A [2,2-bis(4-hydroxyphenyl)propane] (BPA), 4-nonylphenol (NP) and di(2-ethylhexyl)phthalate (DEHP), and its metabolite mono-2-ethylhexyl phthalate (MEHP) are chemicals found in plastics, which act as endocrine disruptors (EDs) in animals, including human. EDs act like hormones in the endocrine system, and disrupt the physiologic function of endogenous hormones. Most people are exposed to different endocrine disruptors and concern has been raised about their true effect on reproductive organs. In the testis, they seem to preferentially attack developing testis during puberty rather than adult organs. However, the lack of information about the molecular mechanism, and the apparently controversial effect observed in different models has hampered the... |
| Tipo: Journal article |
Palavras-chave: Testis; Spermatogenesis; Bisphenol A; Nonylphenol; ADAM17. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000100001 |
| |
|
|
| BERNAL,FABIÁN; HARTUNG,HANS-PETER; KIESEIER,BERND C. |
| Matrix metalloproteinases (MMPs) comprise a large group of endoproteinases that degrade all protein components of the extracellular matrix. Functionally, MMPs contribute to several different physiological as well as pathological conditions. The number of newly described MMPs has increased in recent years, although current knowledge about their expression pattern in various tissues remains incomplete. Here we analyzed the relative mRNA expression of the most recently described MMPs _ MT5-MMP (MMP-24), MT6-MMP (MMP-25), MMP-27 and epilysin (MMP-28) _ in a broad selection of rat tissues using real time-PCR. MMP-24 mRNA was found to be widely expressed with predominance in the central nervous system. MMP-25 mRNA, in contrast, exhibited peak expression levels... |
| Tipo: Journal article |
Palavras-chave: Bone; CNS; Epilysin; Kidney; MT5-MMP; MT6-MMP; Testis. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200016 |
| |
|
| |
|
|
| Bas,Hatice; Kalender,Suna. |
| ABSTRACT This study was done to evaluate the effects of lead nitrate and mercury chloride in testis tissues of Wistar rats. Lead nitrate and mercury chloride are widely used heavy metals in industry. Oral lead and mercury administrations to adult male rats at doses 45 mg/kg bw and 0.02 mg/kg bw, respectively for 4 weeks caused a significant increasing in MDA levels and antioxidant enzyme activities (SOD, CAT, GPx and GST). The MDA levels and acivities of antioxidant enzymes was lower in rats that were administrated by lead nitrate than mercury chloride treated group. Light microscopic analyses revealed that lead nitrate and mercury chloride induced numerous histopathological changes in testis tissues of rats. Histopathological observations of the testis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Lead; Mercury; Oxidative stress; Testis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100341 |
| |
|
|
| He,Liangjun; Wang,Shiwei; Deng,Haifeng; Dong,Hong; Chen,Jingbo. |
| ABSTRACT MicroRNAs (miRNAs) are a class of short non-coding RNAs identified as potent regulators of gene expression. Previous studies have suggested that miRNAs are involved in mammalian spermatogenesis. Stallion fertility is an important trait for the horse breeding industry, but stallion fertility traits are largely ignored in the industry. In this study, we generated expression profiles of miRNAs in foal (immature) and stallion (mature) testes using Solexa sequencing. We identified 438 known and homologous equine miRNAs and 199 novel miRNAs which were distributed among all the chromosomes. The two developmental stages showed significant differences in miRNA expression patterns. Our result expands the horse miRNA database and provided additional... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Horse; MiRNAs; Solexa; Testis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100307 |
| |
|
|
| Andreussi,Paulo Antônio Terrabuio; Costa,Deiler Sampaio; Faria,Fábio José Carvalho; Fernandes,Carlos Antônio Carvalho; Santos,Marcelo Diniz; Silva,Juliana Correa Borges. |
| The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10), Polled Nelore (n=6), Gir (n=5), Guzerat (n=5) and Tabapuã bulls (n=5) were used. The fragments were perfusion-fixed in Karnovsky solution, embedded in glycol methacrylate and stained with toluidine blue-1% sodium borate. The Nelore animals had a higher tubular volumetric proportion (85.2%) and greater height of the seminiferous epithelium (73.2 µm) than the Gir, Guzerat and Tabapuã breeds. The Nelore animals also had a higher volumetric proportion of Leydig cells (5.2%) than the Guzerat and Tabapuã breeds. There was no significant difference for any of these parameters between the Nelore... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Testis; Volumetric proportion; Seminiferous tubule. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600900 |
| |
|
|
| Paula,Tarcízio Antônio Rego de; Matta,Sérgio Luiz Pinto da; Silva Jr.,Valdemiro Amaro da; Costa,Deiler Sampaio; Fonseca,Cláudio Cesar; Neves,Marco Túlio David das. |
| This study aimed at the qualitative and quantitative characterization of the different intertubular tissue components in adult male capybara. Testes of 15 adult capybaras from a commercial slaughterhouse of wild animals were used. The average percentage of Leydig cells was 32.95 ± 10.03 %, whereas in the other components of the intertubular space it was 14.95 ± 4.79 %, thus the whole intertubular space totalized 47.91 ± 11.48 %. The average weight of the testes were 32.83 ± 4.78g, while the animals' body weight were around 52.37 kg and the gonadosomatic and leydigosomatic indexes were 0.125 ± 0.02% and 0.0411 ± 0.0148% respectively. It was concluded that the leydigosomatic index of the capybaras was lower than the one observed in rats, as well as the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intertubular space; Leydig cell; Testis; Capybara; Hydrochoerus hydrochaeris. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200014 |
| |
|
|
| Matt,Sérgio Luis Pinto da; Gomes,Marcos de Lucca Moreira; Andrade,Dálcio Ricardo de. |
| Oligosarcus argenteus belongs to the Acestrorhynchinae subfamily, being restricted to South America, and found in several Brazilian hydrographic basins, in lotic and lentic environments, where they are able to reproduce. With the purpose of studying the reproductive biology of the males from this species, many morphological parameters were analyzed during a 24 month period, as well as characterizing the different testicular maturation stages. A maturity scale, with three stages (I - Initial Maturing, II - Intermediate Maturing, III - Final Maturing) was proposed for the adult males of Oligosarcus argenteus. The reproductive period was established by the bimonthly frequency of spermatogenesis and by the gonadal maturation stages. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reproductive cycle; Histology; Testis; Oligosarcus argenteus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100016 |
| |
|
| |
|
|
| Freitas,Karine Moura de; Costa,Kyvia Lugate; Campos,Pamela Kelly Araújo; Melo,Fabiana Cristina Silveira Alves de; Paula,Tarcízio Antônio Rego de; Matta,Sérgio Luis Pinto da. |
| The aim of this study was to evaluate the possible beneficial effects of Catuaba Cristal® (CC), an alcoholic drink made from wine and Erythroxylum catuaba Ar. Cam on testis. Wistar rats either received CC solution (n=8) or water (n=9). Results showed significant body weight reduction within the CC group, although, no weight changes were observed for liver, kidney, testis, epididymis, seminal vesicle and prostate. The volumetric proportion and volume of interstitial tissue and lymphatic space were reduced in the treated group. In the CC group, although the nuclear volume of Leydig cells (LC) decreased, the number of LC per testis increased. These results suggested that CC had no beneficial effect on spermatogenesis of Wistar rats. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphrodisiac drink; Medicinal plants; Morphometry; Spermatogenesis; Testis. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500007 |
| |
|
| |
|
| |
|
| |
| Registros recuperados: 54 | |
|
|
|
