Adrenal tissue in the male African catfish, Clarias gariepinus: localization and steroid hormone secretion

Vermeulen, G. J.; Lambert, J.G.D.; Teitsma, Christine A.; Zandbergen, Matthijs A.; Goos, H.J.Th.

doi:10.1007/bf00318367

Cited by 12 publications

(9 citation statements)

References 25 publications

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“…The interrenal cell presents extended vesiculated sER, numerous mitochondria with tubulo‐vesicular cristae and free ribosomes. Such structures are similar to those described in Pimephales promelas (Yoakim and Grizzle, 1980) and for Clarias gariepinus (Vermeulen et al., 1995) and Bycon cephalus (Rocha et al., 2001). These organelles are directly linked to the biosynthesis of steroid hormones, and in teleosts, the major corticosteroid hormone is cortisol (Chester Jones and Phillips, 1986).…”

Section: Discussionsupporting

confidence: 83%

Chromaffin cells and interrenal tissue in the head kidney of the grouper, Epinephilus tauvina (Teleostei, Serranidae): a morphological (optical and ultrastructural) study

Abdel-Aziz¹,

Ali²,

Abdu

et al. 2010

Journal of Applied Ichthyology

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Summary This work analyses the distribution, histology and ultrastructure of chromaffin cells (CCs) and interrenal tissue (It) in the head kidney of Epinephilus tauvina. Histological examination revealed that chromaffin cells are found in small groups under the endothelium of the posterior cardinal vein (PCV) and are mostly closely associated with the interrenal tissue. Ultrastructure examination confirmed the existence of two main chromaffin cell types, distinguished by different types of secretory granules. The first type was characterized by the presence of vesicles with round, strongly electron dense core granules, which were eccentrically located. Such cells were interpreted as being noradrenaline cells. Meanwhile, cells with vesicles that were completely electron lucent or that contained small less dense eccentric granules were identified as adrenaline cells. Nerve endings were invaginated into the chromaffin cells through synaptic junctions. Interrenal tissue consisted of nests, cords, or strands of cells in contact with the posterior cardinal vein (PCV) and interposed with haematopoietic tissue. Ultrastructure analysis revealed only one interrenal cell type, which contained abundant smooth endoplasmic reticulum (sER) and numerous mitochondria with tubulo‐vesicular cristae, characteristics of steroid‐producing cells. The interrenal tissue cells have different cytological aspects that can be linked to a steroidogenic cell cycle allowing a periodical renewal of organelles.

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Section: Discussionsupporting

confidence: 83%

Chromaffin cells and interrenal tissue in the head kidney of the grouper, Epinephilus tauvina (Teleostei, Serranidae): a morphological (optical and ultrastructural) study

Abdel-Aziz¹,

Ali²,

Abdu

et al. 2010

Journal of Applied Ichthyology

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“…Male Fundulus adrenocortical tissue possesses enzyme activities associated with steroid synthesis, specifically 3β-, 3α-, 11β-, and 17β-hydroxysteroid dehydrogenase activities (Bara 1968). Similarly, male African catfish adrenal (interrenal) tissue was capable of synthesis of at least 15 different steroids including predominantly cortisol and androstanediones (Vermeulen et al, 1995). Head kidneys from adult European sea bass have very low but detectable aromatase activity (Gonzáles and Piferrer 2003).…”

Section: Discussionmentioning

confidence: 99%

Local expression of CYP19A1 and CYP19A2 in developing and adult killifish (Fundulus heteroclitus)

Wang¹,

Willett²

2008

General and Comparative Endocrinology

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P450 aromatase (CYP19) is the terminal enzyme in the steroidogenic pathway and catalyzes the conversion of androgens to estrogens. Fundulus heteroclitus like other teleosts, express two CYP19 genes, CYP19A1 and CYP19A2. The expression of CYP19s in Fundulus was measured by in situ hybridization throughout development. In 90 dpf (day post-fertilization) fish and adult fish, CYP19A1 was expressed in the ooplasm of early stage I oocytes (primary growth stage). Expression of CYP19A1 was localized in the follicle cell layer of late stage I (previtellogenic stage) and stage II (vitellogenic stage) follicles, but by stage III (early maturational follicles) CYP19A1 expression was localized in the vitelline envelope. Overall, CYP19A1 oocyte membrane expression gradually declined from highest expression at late stage I to nondetectable levels by stage IV. Highest expression of CYP19A2 was detected in the brain including the hypothalamus from 4, 6, 8, 10, 14 dpf embryos, 90 dpf fry fish and adult fish brain. In females compared to males, there was higher CYP19A2 expression in olfactory bulb. In addition to the brain, there was strong CYP19A2 signal in adrenal/kidney cells in 6-14 dpf embryos. This work establishes the localization and constitutive expression of CYP19s in Fundulus which can then be compared with potential disruption of CYP19A1 and CYP19A2 expression and physiological consequences caused by environmental contaminants.

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“…In addition to OHA, the synthesis of T and KT is also demonstrated, although in small amounts only (< 5% and < 1% of OHA for T and KT, respectively; [ [10]). The inter-renal tissue of adult catfish produce some androgens, such as androstenedione (A; [43]). In contrast, no conversion of [ There is an apparent difference between the in vitro and in vivo results, namely OHA being the main testicular product versus KT predominating in the blood.…”

Section: Steroid Milieu During Spermatogenesismentioning

confidence: 99%

SEX STEROIDS AND SPERMATOGENESIS IN THE AFRICAN CATFISH (CLARIAS GARIEPINUS)

Cavaco

2005

Archives of Andrology

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Adrenal tissue in the male African catfish, Clarias gariepinus: localization and steroid hormone secretion

Cited by 12 publications

References 25 publications

Chromaffin cells and interrenal tissue in the head kidney of the grouper, Epinephilus tauvina (Teleostei, Serranidae): a morphological (optical and ultrastructural) study

Chromaffin cells and interrenal tissue in the head kidney of the grouper, Epinephilus tauvina (Teleostei, Serranidae): a morphological (optical and ultrastructural) study

Local expression of CYP19A1 and CYP19A2 in developing and adult killifish (Fundulus heteroclitus)

SEX STEROIDS AND SPERMATOGENESIS IN THE AFRICAN CATFISH (CLARIAS GARIEPINUS)

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