Anthophilous beetles ubiquitously inhabit night-blooming cacti but exhibit distinct responses to the spatial distribution of flowers.

Night-blooming cacti, primarily pollinated by bats and hawkmoths, also attract beetles seeking food and safe shelter for mating and brooding their offspring. The influence of flower density on beetle visitation rates remains unclear, with responses varying by species and environmental factors. In the Caatinga Seasonally Dry Tropical Forest, we studied the flower occupancy distribution of two beetle species, Cyclocephala paraguayensis and Nitops aff.

The role of intraspecific mechanical and chemical signaling for mate and sexual recognition in male Tityus pusillus (Scorpiones, Buthidae).

Hydrophobic compounds present in the cuticular wax layer (CWL) of terrestrial arthropods protect them from dehydration and are also involved in chemical communication. However, the role of CWL compounds in the behavioral ecology of scorpions has been studied less often, with most investigations focusing on their responses to mechanical stimuli. In this study, we aimed to characterize the CWL composition of Tityus pusillus (Scorpiones, Buthidae) and examine the influence of CWL solvent extracts and movement on intraspecific mate and sexual recognition by males of this species.

A New Demand for Improved Selectivity and Potency of Cyanine Dyes as Antiproliferative Agents Against Colorectal Cancer Cells.

Cancer treatment remains a significant challenge, with chemotherapy still being one of the most common therapeutic approaches. Based on our initial studies of symmetric monomethine cyanine dyes, which showed potential against colorectal cancer, this study explored several asymmetric cyanines, aiming to develop more potent and selective antitumor agents, particularly against colorectal cancer. In pursuit of this goal, we have designed, synthesized, and structurally characterized twelve new cyanine dyes.

Allogeneic Hematopoietic Cell Transplantation in Elderly Patients in a Latin American Country: Analysis of 11 Years of Data from the Brazilian Registry SBTMO/CIBMTR.

This study analyzed recent changes in the utilization of allogeneic HCT for treatment of acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), and myeloproliferative diseases (MPD) and the survival of HCT recipients ≥60 years of age in Brazil. This retrospective registry study included patients who received a first allogeneic HCT from any donor between 2012 and 2023. Of the 6657 patients, 444 (7%) were 60 years of age or older who received grafts from HLA-matched related (42%) or unrelated (20%) donors or HLA-haploidentical donors (32%).