Equus caballus papillomavirus type 2 (EcPV-2) has been recently associated with the development of genital squamous cell carcinomas in horses. Nevertheless, its circulation among healthy, asymptomatic horses remains poorly understood. This study aimed to investigate the presence of EcPV-2 DNA in asymptomatic horses submitted to necropsy in southern Brazil. A total of 54 horses without clinical or histological evidence of genit...

Previous study demonstrated that Hypnea cervicornis lectin (HCA) reduces inflammation and nociception via interaction with the lectin carbohydrate-binding site, modulating gene expression of the interleukins IL-1β, TNF-α and of iNOS. This study evaluated the effect of HCA in the rat model of arthritis induced by zymosan in the tibiotarsal joint and the involvement of macrophage-derived mediators. In vitro, macrophages were sti...

Understanding the genetic regulation underlying host–microbiota interactions is key to elucidating how microbial communities influence host metabolism, immunity, and physiology. In this context, the main objective of this study was to integrate genomic, transcriptomic, and microbial data to identify shared regulatory variants, highlight key microbial taxa, and prioritize biological pathways related to lipid metabolism, immune...

Microplastics (MPs) are ubiquitous anthropogenic pollutants that originate from diverse sources and pose a significant threat to both aquatic and terrestrial ecosystems. Bees are considered active bio-samplers of air quality due to the accumulation of MPs on their bodies. In addition, the ingestion of MPs alters body mass, locomotion, and hemocyte counts without impairing survival. Native bees hold ecological and economic rele...

The common marmoset ( Callithrix jacchus ) is a neotropical primate widely distributed in Brazil and frequently associated with urban and peri-urban environments, a condition that favors exposure to different parasites. The present study aimed to report the occurrence of Primasubulura jacchi and to document the first record of Rhipicephalus sanguineus sensu lato parasitizing C. jacchus in Northeastern Brazil. A debilitated fem...

Cetaceans are sentinels of marine ecosystem health and are increasingly exposed to protozoal pathogens. This study investigated the occurrence and molecular identity of Sarcocystidae protozoa in 159 stranded cetaceans representing 21 species along the Brazilian coast. Molecular analysis based on PCR amplification and sequencing of the sarcocystid internal transcribed spacer 1 (ITS1) region revealed infections in 14 individuals...

The untapped microbial diversity of the Amazon region represents a strategic frontier for biotechnological applications. This study screened, identified, and evaluated the potential of yeasts isolated from Amazonian environments to bioconvert sugarcane bagasse hydrolysate into ethanol and xylitol. The lignocellulosic hydrolysate was obtained by thermochemical treatment using H 2 SO 4 (0.78% v/v) at 121 °C for 68 min, with a 20...

Mercury exposure remains a public health concern in Amazonian populations. This study assessed hair total mercury levels and associated determinants in 205 women of reproductive age from riverine communities in the Lower Tocantins and Xingu regions, Pará,Brazil. Hair Hg concentrations were measured using cold vapor atomic absorption spectrometry. Multivariable linear regression was used to identify predictors of log-transforme...