PMID: 2497451Mar 1, 1989Paper

Occurrence of melanin granules and melanosynthesis in the kidney of Sparus auratus

Pigment Cell Research
A ZuastiF Solano

Abstract

An optical, ultrastructural, and biochemical study of the melanin accumulation nodules found in the kidney of the teleost fish Sparus auratus is presented. These nodules are randomly distributed in the interstitium of the renal tissue. They are formed by large aggregates of cells replete with melanin granules. The melanin granules occur singly or also in aggregates inside the cells. Most of the granules are electron-dense, but sometimes small electron-lucent spaces within them can be seen. Some secondary lysosomes and dendritic processes can also be observed. Biochemical studies have proved for the first time the existence of measurable tyrosinase activity in those nodules. That activity was assayed using three methods: tyrosine hydroxylation, dopa oxidation, and melanin formation. Furthermore, inhibitors of well-characterized plant and animal skin tyrosinases were effective agents for inhibiting those activities in fish kidney preparations. This finding supports the notion of the existence of true tyrosinase in the melanin accumulation nodules of this tissue. Taking into account the results obtained, the origin and functions of the melanin-containing cells found in the teleost fish kidney are discussed.

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Citations

Jul 1, 1990·In Vitro Cellular & Developmental Biology : Journal of the Tissue Culture Association·G PintucciR Cicero
Jun 25, 1998·In Vitro Cellular & Developmental Biology. Animal·G GuidaR Cicero
Feb 12, 2002·Pigment Cell Research·Anna GalloneRosa Cicero
Feb 20, 2014·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Jamie GrivasPascal J Lafontant
Sep 3, 2011·Zoology : Analysis of Complex Systems, ZACS·Lilian Franco-Belussi, Classius de Oliveira
Dec 3, 2014·Developmental and Comparative Immunology·Laura Diaz-Satizabal, Brad G Magor
Nov 8, 2014·Anatomia, histologia, embryologia·I Reyes-MoyaA C Durán
Oct 25, 2003·Journal of Fish Diseases·C Agius, R J Roberts
Jun 2, 2007·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Rodrigo ZieriClassius de Oliveira
Feb 1, 2014·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Lia Raquel De Souza SantosClassius De Oliveira
May 7, 2016·Aquatic Toxicology·Lara S de GregorioClassius de Oliveira
Sep 26, 2017·Journal of Morphology·Juan Carlos Campuzano-Caballero, Mari Carmen Uribe
Jan 29, 2020·Experimental Dermatology·Jean-Luc CarréRalf Paus
Jan 7, 2021·Environmental Science and Pollution Research International·Arleto T SantosLilian Franco-Belussi
May 27, 2021·Environmental Science and Pollution Research International·Lara Zácari FanaliJoachim Sturve
Jun 25, 2021·Environmental Science and Pollution Research International·Rhayane Alves AssisLia Raquel de Souza Santos
Jul 9, 2021·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Iuri Moraes NeyrãoElisabeth Criscuolo Urbinati
Jul 2, 2021·Environmental Science and Pollution Research International·Lara Salgueiro de GregorioClassius De Oliveira

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