Expanding geographic distribution knowledge of (Batsch) Kühner (Agaricales, Hymenogastraceae) with a novel Antarctic record.

Background: The investigation of Agaricales diversity in the Antarctica is limited, with only seven genera reported for the region. stands out as the genus with the highest species diversity, including 12 species in Antarctica. This research reports the presence of in the region, providing the first complete morphological description for the specimen developing in Antarctica.

Another Piece of the Puzzle: Echinococcus oligarthrus Recorded in Jaguarundis (Herpailurus yagouaroundi) in Southern Brazil.

Echinococcus oligarthrus is a tapeworm endemic to South America and widely distributed in the Amazon region. Its lifecycle is maintained by relationships between felids and their prey, mainly small sylvatic rodents, but humans can be infected occasionally. We report two female jaguarundis (Herpailurus yagouaroundi) harboring E.

Gene and protein expression of E-cadherin and NCAM markers in non-functioning pituitary adenomas.

Non-functioning pituitary adenomas (NFPA) are classified as benign tumors of slow growth, but 40% of them present local invasion, a characteristic of behavior still unpredictable with the use of current tumor markers. This work aims to evaluate the tissue markers E-cadherin and NCAM, which act on cell adhesion, in tumor tissue samples of NFPA and its relationship with the degree of local invasiveness. Gene expression of E-cadherin (CDH1) and NCAM (NCAM1) was assessed by real-time PCR and tissue expression by immunohistochemistry.

Evolution of DNMT2 in drosophilids: Evidence for positive and purifying selection and insights into new protein (pathways) interactions.

The DNA methyltransferase 2 (DNMT2) protein is the most conserved member of the DNA methyltransferase family. Nevertheless, its substrate specificity is still controversial and elusive. The genomic role and determinants of DNA methylation are poorly understood in invertebrates, and several mechanisms and associations are suggested.

Sex-specific methylation in Drosophila: an investigation of the Sophophora subgenus.

Epigenetic phenomena have been widely characterized in the genomes of vertebrates and DNA methylation is a key mechanism of epigenetic regulation. The DNA methylation systems of invertebrates and vertebrates show several notable differences. However, the evolutionary implications of those differences only recently began to be revealed.

First evidence of methylation in the genome of Drosophila willistoni.

DNA methylation has been studied abundantly in vertebrates and recent evidence confirms that this phenomenon could be disseminated among some invertebrates groups, including Drosophila species. In this paper, we used the Methylation-Sensitive Restriction Endonuclease (MSRE) technique and Southern blot with specific probes, to detect methylation in the Drosophila willistoni species. We found differential cleavage patterns between males and females that cannot be explained by Mendelian inheritance, pointing to a DNA methylation phenomenon different from the Drosophila melanogaster one.