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Scientists have always thought about fission clusters as entirely distinct from collisional families. Now a study conducted by researchers affiliated with UNESP has shown that fission clusters may originate from collisional families in some cases Other asteroid groups formed as a result of rotational fission, which happens when a rapidly spinning body reaches critical rotation speed and splits into relatively small fragments only a few kilometers across. Scientists have always thought about [...]

Leafcutter ants such as Atta sexdens or Acromyrmex lobicornis face two major challenges when they leave the safety of the nest to forage: choosing the best plants from which to collect leaves and avoiding being surprised by strong winds or heavy rain, which would prevent them from carrying out their task. A study by researchers at the University of São Paulo's Luiz de Queiroz College of Agriculture (ESALQ-USP) in Brazil shows that leafcutter ants are capable of predicting adverse [...]

Researchers have identified a genetic signature with prognostic value for certain kinds of breast cancer. The discovery also contributes to a better understanding of the molecular mechanisms of pathological angiogenesis, the aberrant proliferation of blood vessels that occurs during cancer and other diseases. The research, published in the journal PLOS Genetics, combined a study of the genes involved in retinopathy, as a model of angiogenesis, with analysis of transcriptomic gene [...]

Using an experimental model of multiple sclerosis, the scientists found that the sympathetic nervous system can limit the generation of effector responses by inhibiting the action of the cells that attack an antigen taken as a threat by the immune system The results of a study conducted in Brazil suggest that the sympathetic nervous system – the part of the autonomous nervous system that controls responses to danger or stress – can modulate the action of defense cells in patients [...]

The researchers propose that this evidence should be used as input to public policy with the aim of mitigating the impacts of human activities on coastal and marine ecosystems. A study of six beaches in the coastal city of Guarujá in São Paulo state (Southeast Brazil) suggests that urbanization may be a source of stress not only for humans but also for mussels. Researchers affiliated with the Federal University of São Paulo (UNIFESP) in Santos, Brazil, and the University [...]

International collaboration results in largest-ever inventory of Amazon fish fauna. Data will help estimate the risk of impacts related to the construction of dams and waterways as well as deforestation, mining and climate change. The Amazon Basin contains the largest number of scientifically described freshwater fish species in the world: 2,257 or 15% of the total number of known freshwater species. According to a new study, however, this vast biodiversity is unevenly distributed and follows [...]

A Brazilian team at FAPESP-supported Center for Research on Inflammatory Diseases identified the strategy used by immune cells to combat the pathogen Mayaro virus, which causes symptoms similar to those of chikungunya fever. The mechanism by which defense cells respond to infection by Mayaro virus has been described by a team affiliated with the Center for Research on Inflammatory Diseases – CRID in an article published in the journal PLOS Pathogens. According to the authors, by [...]

Repercussão de notícia produzida pela Agência FAPESP sobre trabalho de grupo internacional liderado por pesquisadores brasileiros que concluiu o sequenciamento mais completo já feito do genoma da cana-de-açúcar comercial. No total, foram mapeados 373.869 genes, o que corresponde a 99,1% do total. O artigo publicado na revista GigaScience tem entre seus autores pesquisadores apoiados pela FAPESP por meio do programa PITE e de Auxílios à Pesquisa – Temático, no âmbito do programa BIOEN, e Bolsa Estágio de Pesquisa no Exterior (BEPE), na modalidade Pós-doutorado

Therapy used against grade 4 glioblastoma multiforme combines a photoactive molecule and a chemotherapeutic agent — both encapsulated in protein-lipid nanoparticles; work was presented by Antônio Claudio Tedesco during FAPESP Week France Researchers from the University of São Paulo (USP) in Brazil have developed a strategy for treating the most aggressive type of brain cancer in adults that combines a photoactive molecule and a chemotherapeutic agent – both [...]