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A wearable sensor printed on microbial nanocellulose, a natural polymer, has been created in Brazil by researchers at the University of São Paulo (USP) in São Carlos in collaboration with colleagues at São Paulo State University (UNESP) in Araraquara, the University of Araraquara (UNIARA), the University of Campinas (UNICAMP), and the Brazilian National Nanotechnology Laboratory (LNNano). The skin-adherent sensor is an improved substitute for conventional sensors printed [...]

Entirely novel materials and known materials alike can be produced by means of self-organization in chemical systems. Applications range from sensors and batteries to fuel cells, among other technological possibilities. Achieving a deeper understanding and control of the processes involved is the goal of the Campinas Electrochemistry Group (CampEG), affiliated with the University of Campinas’s Institute of Chemistry (IQ-UNICAMP) in the state of São Paulo, Brazil, and led by Raphael [...]

Arthritis affects almost 2% of the world’s population, or some 150 million people, and currently, there is no completely effective treatment for this chronic disease. A new molecule developed in the laboratory has been shown to have potential therapeutic effects. Tested in mice with genetically induced arthritis, it suppressed the inflammatory process, reducing both inflammation and joint tissue wear and tear. Arthritic mice treated with the substance displayed less pain and swelling and [...]

A group of researchers from four countries, including Brazil, have worked out exactly how a pollen tube, the plant cell that emerges from a grain of pollen, grows up to a thousand-fold to reach an ovule deep inside the flower. The key to this growth is an inflow and outflow of protons that creates electrical activity at the cell membrane and makes the cell grow. The results of the study will help scientists understand an array of related phenomena, such as seed production, the growth of fungi, [...]

Oxytocin, produced by the hypothalamus and sometimes known as the "love hormone" for its involvement in pair bonding and orgasm, can be a strong ally in the control and prevention of osteoporosis, according to a study by scientists at São Paulo State University (UNESP) in Brazil. The study showed that when administered to female rats at the end of their fertile period, the hormone reversed precursors of osteoporosis, such as reduced bone density, decreased bone strength and a [...]

Classical phase transitions are governed by temperature. One of the most familiar examples is the phase transitions of water from solid to liquid to gas. However, other parameters govern phase transitions when temperatures approach absolute zero, including pressure, the magnetic field, and doping, which introduce disorder into the molecular structure of a material. This topic is treated from the theoretical standpoint in the article "Unveiling the physics of the mutual interactions in [...]

A Brazilian scientist has produced an inventory of 219 pathogens that infect plants in Brazil, including many agriculturally important species. The annotated list, published in Biota Neotropica, is the largest compilation of information on plant viruses ever produced in Brazil. It presents descriptions of the microorganisms, data on the diseases they cause, and information on their occurrence in native, cultivated and ornamental plants as well as weeds. “Since the start of my career, [...]

Photodynamic therapy can be an efficient ally to combat secondary infections in COVID-19 patients. Use of the technique, which combines light and a photosensitizing chemical substance to kill microorganisms in the respiratory tract, is advocated as a complementary treatment in a feature published in Photodiagnosis and Photodynamic Therapy and written by researchers affiliated with the Optics and Photonics Research Center (CEPOF ) in São Carlos, state of São Paulo, [...]

São Paulo, Brazil — Artificial intelligence can increase the effectiveness of drug repositioning or repurposing research, according to a study published in Translational Psychiatry. In the study, which was supported by São Paulo Research Foundation – FAPESP, Brazilian researchers correlated information on genes associated with psychiatric and neurological disorders and drugs approved for use in treating other diseases that might potentially inhibit or activate these [...]