A5051880253- Aquaculture Nutrition and Growth
- Reproductive biology and impacts on aquatic species
- Environmental Toxicology and Ecotoxicology
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Heavy Metal Exposure and Toxicity
- Algal biology and biofuel production
- Nanoparticles: synthesis and applications
Fundação Oswaldo Cruz
2023
Universidade Federal do Paraná
2018-2023
Brain aromatase is a key enzyme exclusively expressed in fish radial glial cells that convert androgens into estrogens, thus controlling neuroendocrine functions and neurogenesis. As an important step characterizing the systems of Rhamdia quelen (jundiá), partial cDNA sequence (1045 bp) brain (cyp19a1b) was cloned sequenced. At nucleotide level found to be 88% identical cyp19a1b two species catfish, Ictalurus punctatus Silurus meridionalis. The predicted amino acid between 80 91% similar...
Expression of vitellogenin gene (vtg) is used as a biomarker for the evaluation exposure estrogenic substances in fish. However, scientific information regarding this Neotropical fish limited. In study, 760 bp partial sequence vtg mRNA from liver catfish Rhamdia quelen was cloned, representing almost 20% full-length vtg. The phylogenetic tree analysis recovered R. inside clade Siluriformes. alignment deduced amino acid with other species confirmed that described specific. Also, cloned...
Abstract: Aim Paracetamol (PCM), or acetaminophen, is one of the most used drugs for human treatment pain and fever. Since it has often been found in aquatic environment, aim this study was to investigate effects PCM on reproductive axis male Rhamdia quelen catfish. Methods Different biomarkers were evaluated hypothalamus, liver gonads, as well plasma sexual hormone quantification. The fish exposed three concentrations: 0.25, 2.5 25 µg.L-1 a control group (solvent acetone 0.0003%). After 14...