Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Using molecular, biochemical, and cytological tools, we studied the nucleotide and the deduced amino acid sequence of PHI/VIP and the distribution of VIP/VPAC receptor system in the testis of the Italian wall lizard Podarcis sicula to evaluate the involvement of such a neuropeptide in the spermatogenesis control. We demonstrated that (1) Podarcis sicula VIP had a high identity with other vertebrate VIP sequences, (2) differently from mammals, VIP was synthesized directly in the testis, and (3) VIP and its receptor VPAC2 were widely distributed in germ and somatic cells, while the VPAC1 R had a distribution limited to Leydig cells. Our results demonstrated that in Podarcis sicula the VIP sequence is highly preserved and that this neuropeptide is involved in lizard spermatogenesis and steroidogenesis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/jez.1866 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
From micro to macroevolution: drivers of shape variation in an island radiation of Podarcis lizards.
Evolution
November 2021
UMR 7179, Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Centre National de la Recherche Scientifique, Paris, France.
Article Synopsis
- Phenotypic traits can evolve in response to environmental changes, but understanding how these subtle differences at the population level lead to larger changes in ecology is challenging.
- Researchers studied lizard species Podarcis melisellensis and P. sicula, examining factors like bite force and jaw muscle structure across 16 island populations.
- The study found that both head shape and jaw musculature evolve under similar ecological pressures, indicating that local conditions are key drivers of phenotypic variation, and that small-scale evolutionary changes can lead to broader patterns of diversity.
Spermatogenesis and regulatory factors in the wall lizard Podarcis sicula.
Gen Comp Endocrinol
November 2020
Department of Biology, University of Naples Federico II, Via Cintia 21, 80126 Naples, Italy.
Spermatogenesis is an extraordinarily complex process, regulated by several factors, which leads to the differentiation of spermatogonia into spermatozoa. Among vertebrates, several reports have been focused on the lizard Podarcis sicula, a seasonal breeder and a good model for the study of reproductive processes. The goal of this review is to resume all the available data about systemic and above all local control factors involved in the control of P.
View Article and Find Full Text PDFEffects of alkylphenols mixture on the adrenal gland of the lizard Podarcis sicula.
Chemosphere
November 2020
Department of Biology, University of Naples Federico II, Via Cinthia, 80126, Naples, Italy; National Institute of Biostructures and Biosystems (INBB), Rome, Italy. Electronic address:
Alkylphenols (AP) are widespread environmental compounds belonging to the large family of substances known as Endocrine Disrupting Chemicals (EDCs). The present study was carried out to assess the effects of Octylphenol (OP) alone and in combination with Nonylphenol (NP) on the hypothalamus-pituitary-adrenal gland (HPA) axis of the lizard Podarcis sicula. Lizards are good bioindicators due to their features such as wide distribution, large population and good sensitivity to contaminants.
View Article and Find Full Text PDFImmunolocalization of aromatase P450 in the epididymis of Podarcis sicula and Rattus rattus.
Eur J Histochem
January 2020
Department of Biology, University of Naples Federico II.
The goal of this study was to evaluate P450 aromatase localization in the epididymis of two different vertebrates: the lizard Podarcis sicula, a seasonal breeder, and Rattus rattus, a continuous breeder. P450 aromatase is a key enzyme involved in the local control of spermatogenesis and steroidogenesis and we proved for the first time that this enzyme is represented in the epididymis of both P. sicula and R.
View Article and Find Full Text PDFAccess to resources is a dynamic and multicausal process that determines the success and survival of a population. It is therefore often challenging to disentangle the factors affecting ecological traits like diet. Insular habitats provide a good opportunity to study how variation in diet originates, in particular in populations of mesopredators such as lizards.
View Article and Find Full Text PDF