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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Capaldo, Anna Gay, Flaminia Valiante, Salvatore De Falco, Maria Sciarrillo, Rosaria Maddaloni, Massimo Laforgia, Vincenza |
| Description | Country affiliation: Italy Author Affiliation: Capaldo A ( Department of Biological Sciences, Section of Evolutive and Comparative Biology, University Federico II, Via Mezzocannone 8, 80134 Naples, Italy. anna.capaldo@unina.it) |
| Abstract | The aim of our study was to verify whether environmental concentrations of nonylphenol influenced the adrenal gland of Triturus carnifex. Newts were exposed to 19 µg/L nominal concentration of nonylphenol throughout the periods of December-January and March-April, corresponding to different stages of the chromaffin cell functional cycle. The morphological features of the steroidogenic and chromaffin tissues, and the serum levels of ACTH, aldosterone, corticosterone, norepinephrine and epinephrine were evaluated. Nonylphenol did not influence ACTH serum levels. During the two periods examined, the steroidogenic tissue had the same reaction: the quantity of cytoplasmic lipids, and the corticosteroid serum levels, decreased, suggesting the inhibition of synthesis and release of corticosteroids. During the two periods examined, the chromaffin tissue reacted differently to nonylphenol. During December-January, the numeric ratio of norepinephrine granules to epinephrine granules, and the epinephrine serum levels, increased, suggesting the stimulation of epinephrine release. During March-April, the numeric ratio of norepinephrine granules to epinephrine granules did not change, and the norepinephrine serum levels decreased, suggesting the inhibition of norepinephrine release. Our results show that nonylphenol influences the activity of the newt adrenal gland; considering the physiological role of this gland, our results suggest that nonylphenol may contribute to amphibian decline. |
| File Format | HTM / HTML |
| ISSN | 15320456 |
| Issue Number | 2 |
| Volume Number | 155 |
| Journal | Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-03-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Toxicology Discipline Pharmacology Adrenal Glands Drug Effects Endocrine Disruptors Toxicity Phenols Salamandridae Blood Metabolism Ultrastructure Adrenocorticotropic Hormone Aldosterone Animals Chromaffin Cells Corticosterone Epinephrine Male Microscopy, Electron, Transmission Norepinephrine Seasons Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Physiology Health, Toxicology and Mutagenesis Medicine Aquatic Science Biochemistry Toxicology Animal Science and Zoology |
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