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<title lang=en>Insight of EDX Analysis and EFTEM: Are Spherocrystals Located in Strombidae Digestive Gland Implied in Detoxification of Trace Metals ?</title>
<creator>Volland, Jean-Marie</creator>
<creator>Lechaire, Jean-Pierre</creator>
<creator>Frebourg, Ghislaine</creator>
<creator>Aldana Aranda, Dalila</creator>
<creator>Ramdine, Gaëlle</creator>
<creator>Gros, Olivier</creator>
<contributor>Biologie de la Mangrove (BM) ; Systématique, adaptation, évolution (SAE) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS) - Evolution Paris Seine ; Université des Antilles et de la Guyane (UAG) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA)</contributor>
<contributor>Biologie intégrative (FRBI) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)</contributor>
<contributor>Rue Maldhé Fauvette ; Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Systématique, adaptation, évolution (SAE) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 1059-910X</source>
<source>EISSN: 1097-0029</source>
<source>Microscopy Research and Technique</source>
<publisher>Wiley</publisher>
<identifier>hal-00743762</identifier>
<identifier>https://hal.univ-antilles.fr/hal-00743762</identifier>
<source>https://hal.univ-antilles.fr/hal-00743762</source>
<source>Microscopy Research and Technique, Wiley, 2011, 75 (4), pp.425-432. 〈10.1002/jemt.21073〉</source>
<identifier>DOI : 10.1002/jemt.21073</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/jemt.21073</relation>
<language>en</language>
<subject lang=fr>exposure</subject>
<subject lang=fr>Mollusca</subject>
<subject lang=fr>phosphate granule</subject>
<subject lang=fr>queen conch</subject>
<subject lang=fr>trace metal</subject>
<subject>[SDV.BA] Life Sciences [q-bio]/Animal biology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Digestive tubules of Strombidae are composed by three cell types: digestive cells, vacuolated cells, and crypt cells. The last one is characterized by the presence of intracellular granules identified as spherocrystals. Such structures are known to occur in basophilic cells of gastropod digestive gland, where they are supposed to be involved in the regulation of some minerals and in detoxification. In this study, energy-dispersive X-ray analysis (EDX) and energy filtered transmission electron microscopy (EFTEM) were used to determine the elemental content of spherocrystals in two Strombidae, Strombus gigas and Strombus pugilis. In freshly collected individuals of both species, the following elements were detected: Ca, Fe, Mg, P, and Zn. Aluminum and Mn were also detected in S. gigas. Their presence in spherocrystals indicates that, in Strombidae, spherocrystals are involved in the regulation of minerals and essential trace metals. In order to answer the question ''are spherocrystals involved in nonessential trace metals scavenging?,'' artificial cadmium and lead exposure by both waterborne and dietary pathways was applied to S. pugilis. No evidence of cadmium (Cd(NO3)2) or lead (Pb(NO3)2) provided by food was found in spherocrystals. Cadmium provided in water (Cd(NO3)2 and CdCl2) causes structural modifications of the digestive gland; however, this element was not trapped in spherocrystals. These results suggest that spherocrystals are not involved in detoxification of such nonessential trace metals.</description>
<date>2011-09-14</date>
</dc>
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