Anatomy, Vasculature, and Innervation of the Male Reproductive Tract

Setchell, B. P.; Breed, W. G.

doi:10.1016/b978-012515400-0/50022-1

Cited by 174 publications

(246 citation statements)

References 525 publications

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“…Cell types that are present throughout the epididymis include principal cells with apical stereocilia (the predominant cell type), basal cells, and halo cells (a subset of T lymphocytes and monocytes). In addition, the initial and intermediate segments contain apical and narrow cells, while clear cells are present in the caput, corpus, and cauda (Abou-Haila and Fain-Maurel 1984;Foley 2001;Hermo and Robaire 2002;Reid and Cleland 1957;Robaire and Hermo 1988;Setchell, Maddocks, and Brooks 1988).…”

Section: Epididymismentioning

confidence: 99%

“…Its position and dimensions vary with species. In rodents, the epididymis is relatively long and loosely attached to the testis compared to humans and domestic animals (Setchell, Maddocks, and Brooks 1988). It is generally subdivided into the initial segment and intermediate segment into which the efferent ducts empty, followed by three main parts (caput, corpus, and cauda), but it can be subdivided further by various histologic and/or functional schemes into as many as 6 to 12 distinct zones, comprising a variety of cell types with a variety of functions.…”

Section: Epididymismentioning

confidence: 99%

“…Blind ending efferent ducts are relatively common in the rat and are caused by incomplete development of one or more ducts. They are generally associated with sperm stasis and sometimes inflammation (Setchell, Maddocks, and Brooks 1988 …”

Section: Congenital Lesions: Excurrent Ductsmentioning

confidence: 99%

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Proliferative and Nonproliferative Lesions of the Rat and Mouse Male Reproductive System

Creasy

Bube

Rijk³

et al. 2012

Toxicol Pathol

206

198

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The INHAND Project (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP), and North America (STP) to develop an internationally accepted nomenclature for proliferative and nonproliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature and differential diagnosis for classifying microscopic lesions observed in the male reproductive system of laboratory rats and mice, with color microphotographs illustrating examples of some lesions. The standardized nomenclature presented in this document is also available for society members electronically on the Internet (http://goreni.org). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous and aging lesions as well as lesions induced by exposure to test materials. A widely accepted and utilized international harmonization of nomenclature for lesions of the male reproductive system in laboratory animals will decrease confusion among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists.

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Section: Epididymismentioning

confidence: 99%

Section: Epididymismentioning

confidence: 99%

See 1 more Smart Citation

Proliferative and Nonproliferative Lesions of the Rat and Mouse Male Reproductive System

Creasy

Bube

Rijk³

et al. 2012

Toxicol Pathol

206

198

View full text Add to dashboard Cite

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“…The major portions of testicular tissues are composed of Sertoli, Leydig, and germ cells. Leydig cells produce testosterone, and Sertoli cells support, protect, and provide nutrients to spermatids [20,21]. Sertoli cells outnumber Leydig cells by a factor of three to four, and germ cells outnumber Sertoli cells by a factor of four to six [22,23].…”

Section: Discussionmentioning

confidence: 99%

18F-FDG Uptake of Human Testis on PET/CT: Correlation with Age, Sex Hormones, and Vasectomy

Moon

Lee

et al. 2011

Nucl Med Mol Imaging

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Purpose The purpose of this study was to evaluate glucose metabolism of normal human testis on 18 F-FDG PET/CT and to assess possible correlations among age, the serum levels of sex hormones, and vasectomy. Methods 18 F-FDG PET/CT was performed in 66 normal healthy men (50.8±13.6 years, range 22-81), and mean standard uptake values (SUV) of 18 F-FDG in testis and adductor muscle were measured. Testis-muscle SUV ratios (T/M ratios) were calculated. Serum levels of total testosterone, free testosterone, estradiol, and of sex-hormone binding globulin (SHBG) were measured. We searched for correlations between T/M ratios and age and the serum concentrations of sex hormones. 18 F-FDG PET/CT was also performed in 32 vasectomized men (55.7±7.8 years, range 38-71) and 52 nonvasectomized men (55.4±11.6 years, range 37-72). Mean SUVs of testis and adductor muscle were measured, and T/M ratios were calculated. Results A significant age-related decline was found in T/M ratio (r=−0.509, p<0.0001). Serum levels of total testosterone and free testosterone were also found to be positively correlated with T/M ratio (r=0.427, p=0.0003; r=0.435, p=0.0003, respectively). The mean SUV and T/M ratio of vasectomized men were significantly lower than those of nonvasectomized men (p<0.0378 and p=0.0001, respectively).Conclusions Glucose metabolism in the testis in an adult population was found to be correlated with age, serum sex hormone level, and vasectomy history. These results indicate that testicular 18 F-FDG uptake may have attributed to testicular function and testicular histology. Our findings may have important implications for the interpretation of testicular 18 F-FDG uptake in the normal adult population.

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“…El ICI aumenta desde 3-4 en Enero hasta ICI= 5 en Septiembre. La única capa de células mioides observadas en la pared de los túbulos seminíferos, coincide con lo descrito por Setchell et al (1994), quien además describe varias capas de estas células para el hombre, el carnero y el gato; por el contrario, Heyn (1987), describe para este último una sola capa.…”

Section: Discussionunclassified

Túnicas Testiculares Durante la Fase de Reposo y Actividad Sexual del Conejo Macho (Oryctolagus cuniculus)

et al. 2010

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SMOK, S.; FLORES, E.; CATTANEO, G.; ADARO, L. & ROJAS, M.Túnicas testiculares durante la fase de reposo y actividad sexual del conejo macho (Oryctolagus cuniculus). Int. J. Morphol., 28(2):595-599, 2010. RESUMEN:La domesticación del conejo (Oryctolagus cuniculus), ha permitido el paso de una reproducción de tipo anual a una de tipo no estacional, observándose pariciones durante todo el año. Sin embargo, existen parámetros reproductivos que nos indican que aún existe cierta estacionalidad, por ejemplo, la ubicación testicular, correspondiendo el conejo a un estacional de días largos. El presente estudio analiza la morfología de testículos y epidídimos, comparando la bioestructura de las cubiertas testiculares del conejo macho (Oryctolagus cuniculus), durante los meses de Enero y Septiembre. Para esto, se utilizaron seis conejos machos, tres correspondientes al mes de Enero, y tres al mes de Septiembre. Los ejemplares se encontraban clínicamente sanos y sexualmente maduros, de peso promedio 2,5 kg. Se obtuvieron los testículos junto a sus respectivos sacos escrotales, los que se procesaron mediante técnica histológica corriente y tricrómico. Se consignó el Indice espermatogénico (IE) e índice celular interticial (ICI) según Grocock & Clarke. Durante el mes de Enero, se evidenció una clara disminución de los parámetros reproductivos testiculares, con un IE =3, y un ICI=4. Por el contrario, durante el mes de Septiembre, se observó un IE=5 y ICI=5. La túnica albugínea mostró diferencias de espesor en ambos períodos. Sin embargo, se encontró un gran desarrollo de la musculatura cremastérica en ambas etapas, por lo que se concluye que ésta última no sufre atrofia durante el mes de Enero, atribuible posiblemente, a la criptorquidia facultativa que posee esta especie.PALABRAS CLAVE: Túnica Albugínea; Saco cremastérico; Estacionalidad; Testículo. INTRODUCCIÓNNo obstante la domesticación que ha sufrido el conejo (Oryctolagus cuniculus), y al cambio de su estatus de reproductor estacional a continuo, continúa siendo un criptórquido facultativo, una estrategia reproductiva relacionada con cambios en la ubicación testicular.Murray (2006) describe el escroto del conejo como dos hemiescrotos que alojan los testículos, y se encuentran craneal al pene. Las cubiertas testiculares fueron descritas por Smok (2009), las cuales de superficial a profundidad se componen por: 1) dartos; 2) fascia espermática externa, constituida por varias capas de tejido conjuntivo denso; 3) saco cremastérico, que corresponde a una capa formada por fibras musculares de tipo estriado, muy amplia en comparación con el resto de los componentes observados; 4) fascia espermática interna, la cual es imperceptible; 5) lámina parietal de la túnica vaginal; 6) lámina visceral de la túnica vaginal, ambas separadas por la cavidad vaginal y, 7) túnica albugínea. Finalmente se ubican los testículos, los cuales presentan una posición horizontal al cuerpo.En este trabajo, nos enfocaremos principalmente en las variaciones estacionales dentro del saco cremastérico y la ...

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Anatomy, Vasculature, and Innervation of the Male Reproductive Tract

Cited by 174 publications

References 525 publications

Proliferative and Nonproliferative Lesions of the Rat and Mouse Male Reproductive System

Proliferative and Nonproliferative Lesions of the Rat and Mouse Male Reproductive System

18F-FDG Uptake of Human Testis on PET/CT: Correlation with Age, Sex Hormones, and Vasectomy

Túnicas Testiculares Durante la Fase de Reposo y Actividad Sexual del Conejo Macho (Oryctolagus cuniculus)

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