The ductuli efferentes testis of the greater cane rat (Thryonomys swinderianus)

Aire, Tom A.; Merwe, M. van der

doi:10.1007/s00429-003-0310-0

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…This similar origin for the efferent ductules in Pelodiscus sinensis is comparable to that found in other turtles like Chrysemys picta (Holmes and Gist, ). In other animals, the efferent ductules have three segments that depend on the distribution of non‐ciliated cells, as in Thryonomys swinderianus (Aire, ). In Pelodiscus sinensis , the organization of the cells and ultrastructure of the ductules are similar to that in birds, as both show the presence of three distinct portions; the cranial, middle, and the caudal.…”

Section: Discussionmentioning

confidence: 99%

Morphological and ultrastructural study of the efferent ductules in the Chinese soft-shelled turtlePelodiscus sinensis

et al. 2015

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Comparative study of the turtle excurrent duct system increases our understanding the evolution of sperm motility and fertility maintenance in higher vertebrates. Therefore, in this study we observed the histology and ultrastructure organization of efferent ductules in the Pelodiscus sinensis using light and transmission electron microscopy. The efferent ductules are extra- testicular and 22-28 in number originate from rete testis. The epithelium is entirely composed of two types of cells, the predominant non-ciliated and ciliated cells. The ciliated cells have long cilia that protrude into the lumen to form a meshwork. These cells associated with clusters of mitochondria in the supranuclear cytoplasm and possess coated vesicles, vacuole, intracellular spaces, and junction complexes. Ciliated cells in the proximal portion of the ductules contain an endocytic apparatus with coated pits and tubules in the apical cytoplasm. Interdigitations and lipid droplets are predominantly present around the nuclei of these cells. The non-ciliated cells have clusters of mitochondria present in both the supranuclear and perinuclear cytoplasm whereas, the nuclei of these cells are lightly stained. Moreover, the contour of the epithelium towards lumen is irregular as it has a deep indentation. The apical cytoplasm goes deep into the lumen to form cytoplasmic processes. This is the first study to describe the detailed features of efferent ductules in Pelodiscus sinensis with, special focus on the morphology of ciliated cells, as these cells are involved in the mixing of luminal fluid and transport of spermatozoa towards the distal region.

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Section: Discussionmentioning

confidence: 99%

Morphological and ultrastructural study of the efferent ductules in the Chinese soft-shelled turtlePelodiscus sinensis

et al. 2015

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“…In some mammals differences in the appearance of the ductule epithelium are known, but are primarily the result of the presence or absence of granules and vacuoles or vesicles and not because of histological differentiation (Ilio and Hess 1994); in others, such as the grass‐cutter or greater cane rat ( Thryonomys swinderianus ), the ED has three segments, based on the distribution of non‐ciliated or principal cell types (Aire and van der Merwe 2003). In contrast, in several avian species proximal and distal portions, varying considerably in structure, have been reported (Mehrotra 1962; Tingari 1971; Budras and Sauer 1975; Hess et al .…”

Section: Discussionmentioning

confidence: 99%

Efferent ductules of the fan‐throated lizardSitana ponticerianaCuvier: light and transmission electron microscopy study

Akbarsha

Kadalmani

Tamilarasan³

2007

Acta Zoologica

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Akbarsha, M.A., Kadalmani, B. and Tamilarasan, V. 2007. Efferent ductules of the fan-throated lizard Sitana ponticeriana Cuvier: light and transmission electron microscopy study. -Acta Zoologica (Stockholm) 88 : 265-274.Light microscopy histology of efferent ductules and the ultrastructural organization of their epithelium were studied in the fan-throated lizard Sitana ponticeriana Cuvier. The ductules of this lizard are extra-testicular and arise from an extra-testicular rete testis. A major portion of the ductules is intraepididymal and occupies the cephalic end of the epididymis. The ductules differentiate histologically into proximal and distal portions. The epithelium is formed of two major tall columnar cell types, the non-ciliated and ciliated, and one minor cell type, the basal cells. Dark cells were also identified. The non-ciliated cells possess microvilli towards the luminal end, tubular coated pits at the bases of the microvilli, coated vesicles in the apical cytoplasm and multivesicular bodies, lysosomes and mitochondria in the supranuclear and perinuclear cytoplasm, which reflects their role in the uptake of the material they are processing. These cells also participate in spermiophagy. The ciliated cells reflect their role in mixing the luminal content and/or its transport to the distal parts of the male tract. The lizard efferent ductules share many features in common with those of mammals and a crocodile and several other features with birds and a turtle. Spermiophagy by the efferent ductules is reported here for the first time in a reptile.

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“…The epididymal ducts were uniform, with a high sperm presence, and efferent ducts with ciliated and non-ciliated cells. According to Franzo et al (2008), most of the epididymis is made up of efferent ducts, which are connected to the testis network and are the sites of sperm transition to the epididymal lumen, making them fundamental for fluid absorption (Bedford, 1978;Aire, 1979).…”

Section: Histologymentioning

confidence: 99%

Morphology, histology, and proteomics of the testicle and epididymis of European quail fed calcium anacardate

Ferreira,

Vasconcelos,

Vilarinho

et al. 2023

Revista Brasileira De Zootecnia

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Non-ruminantsFull-length research article Morphology, histology, and proteomics of the testicle and epididymis of European quail fed calcium anacardate ABSTRACT -This report examines the effects of calcium anacardate (CA) on the morphology, histology, and proteomics of the testes and epididymal ducts of breeding quail. To that end, 22 140-day-old males were grouped in four treatments, each with different concentrations of CA: 0% (control), 0.25%, 0.50%, and 0.75%. The testicles of the animals were weighed and measured, and proteins from the testicles were separated by 1D SDS-PAGE and analyzed via mass spectrometry. Overall, 35 bands were identified in the testicular tissue gels of European quail. Of these, 13 were significantly different, with treatment 0.75% CA being different from the control in all bands. Significant differences among the mean heights of the seminiferous epithelium and diameters of the epididymal duct were observed. In the control group, the average height of the seminiferous epithelium was 71.2 µm, and in 0.75% CA, it was 45.6 µm. Supplementing feed with CA altered the expression of specific proteins, such as superoxide dismutase and heat shock proteins, of the seminal plasma of quail, in addition to facilitating histological alterations regarding the height of the seminiferous epithelium and the diameter of the epididymal duct, improving the reproductive parameters.

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The ductuli efferentes testis of the greater cane rat (Thryonomys swinderianus)

Cited by 7 publications

References 21 publications

Morphological and ultrastructural study of the efferent ductules in the Chinese soft-shelled turtlePelodiscus sinensis

Morphological and ultrastructural study of the efferent ductules in the Chinese soft-shelled turtlePelodiscus sinensis

Efferent ductules of the fan‐throated lizardSitana ponticerianaCuvier: light and transmission electron microscopy study

Morphology, histology, and proteomics of the testicle and epididymis of European quail fed calcium anacardate

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