Can Betadine (10% povidone-iodine solution) act on the survival rate and gill tissue structure of Oranda goldfish (Carassius auratus)?

Veterinary Research Communications - Industrial chemical solutions are widely used as a method to disinfection of aquaculture water and environments. The aim of the present study was to evaluate...     

Training-induced modifications of circadian rhythmicity of peroxidative parameters in horses

The aim of this study was to evaluate the daily rhythms of peroxidative parameters in untrained and trained horses. Blood samples were collected every 4 h for a 48‐h period for the determination of reactive oxygen metabolites test (d‐ROMs), antioxidant barrier (Oxy‐ads), thiol antioxidant barrier (SHp) and lipid peroxidation (LPO). Two‐way anova showed a significant effect of time of day on all parameters studied, except on LPO. Higher values of Oxy‐ads and SHp were observed in trained horses during both days of monitoring (p < 0.01). All studied parameters, except for LPO, showed robust daily rhythms. Their acrophases occurred during the day in untrained horses and in the evening in trained horses. Our results showed that training increases antioxidative capacity and demonstrated that the daily rhythms of antioxidative parameters can be modified by training.     

Purinergic receptors and regulatory volume decrease in seabream (Sparus aurata) hepatocytes: a videometric study

The response of isolated hepatocytes of Sparus aurata to hypotonic stress was studied by the aid of videometric methods with the aim to investigate the possible involvement of ATP in the regulatory volume decrease (RVD). This study confirms our previous observations showing the ability of these cells to undergo RVD. In addition, it shows that the homeostatic response was inhibited by apyrase, an ATP scavenger, thus suggesting the involvement of extracellular ATP in the RVD response. Experiments performed in the presence of ATPγS or adenosine, agonists of P₂ and P₁ receptors respectively, and in the presence of suramin or 8-PT, antagonists of P₂ and P₁ receptors respectively, suggest that ATP exerts its stimulatory effect on the homeostatic response by interacting with P₂ receptors. On the other hand, the activation of P₁ receptors by ATP metabolites produces opposite effects. In an attempt to clarify the mechanisms involved in ATP release from the cell, we performed some experiments with known inhibitors of the possible mechanisms of regulated ATP release. The results we obtained let us to suppose that the mechanism allowing the exit of ATP from the cell is verapamil sensitive suggesting the involvement of the P-glycoprotein.     

Dietary lysine requirements of Colossoma macropomum (Cuvier, 1818) based on growth performance,hepatic and intestinal morphohistology and hematology

Veterinary Research Communications - This study aimed to determine the dietary lysine requirements of juvenile Colossoma macropomum tambaqui based growth performance, hepatic and intestinal...     

Phytotherapy and combined nanoformulations as a promising disease management in aquaculture: a review

Aquaculture International - Aquaculture-based foods have enriched nutritional and medicinal value to meet the needs of the global population. Recently, improper maintenance of aquatic organisms in...