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Scientific Inquirer (EUA)
Em 2026: 5 notícias
Desde 1995: 78 notícias
Deeper understanding of mosquitoes may lead to novel treatments for disease
Publicado em 14 de maio de 2019
The mosquito Aedes aegypti is the main transmission vector of dengue, Zika, yellow fever and chikungunya in Brazil. It is highly adapted to urban environments and rarely found in forested areas. The mosquito Anopheles cruzii is the primary vector of Plasmodium, the protozoan parasite that causes malaria in humans. It mostly inhabits the countryside and is infrequent in urban areas.
Mosquito population control is considered the best strategy for combating these diseases. Understanding mosquito [...]
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Brazilian researchers tested foodborne diseases for 15 years, most showed resistance
Publicado em 05 fevereiro 2019Brazil’s Ministry of Health received reports of 11,524 outbreaks of foodborne diseases between 2000 and 2015, with 219,909 individuals falling sick and 167 dying from the diseases in question. Bacteria caused most outbreaks of such illnesses, including diarrhea and gastroenteritis. The most frequent were Salmonella spp., with 31,700 cases diagnosed in the period (14.4% of the total), Staphylococcus aureus (7.4%), and Escherichia coli (6.1%). According to a survey by the Ministry of Social [...]ver notícia -
Discovery of Zika virus in dead monkeys may completely change its epidemiology
Publicado em 14 janeiro 2019Zika virus has been detected in dead monkeys found in Brazil near São José do Rio Preto, São Paulo State, and Belo Horizonte, Minas Gerais. The animals had been shot or beaten to death by locals who thought they had yellow fever. In fact, the monkeys were not bearers of that disease, but infection by Zika virus had made them sick and more vulnerable to attack by humans. “The discovery shows the potential exists for Zika to establish a sylvatic transmission cycle [involving wild animals] [...]ver notícia -
Consortium of scientists propose an ambitious plan to determine the genomes if 1.5 million species
Publicado em 01 junho 2018Earth is estimated to be home to between 10 million and 15 million eukaryotes – species of plants, animals, fungi, and other organisms with cells in which the chromosomal DNA is organized into a membrane-bound nucleus. Only 14% of these species (2.3 million) are known, and under 0.1% (15,000) have partially or completely sequenced genomes. Knowledge of this small fraction of Earth’s biodiversity has facilitated enormous advances in agriculture, medicine and biotechnology-based industries, [...]ver notícia -
Genetic factors may predispose children to bronchiolitis
Publicado em 02 abril 2018A scientific study conducted at the State University of Campinas (UNICAMP) in São Paulo State, Brazil, has identified genetic factors associated with the severity of acute viral bronchiolitis. The study was supported by the Sao Paulo Research Foundation – FAPESP. Its results were published in the journal Gene. Principal investigator for the study and a professor at UNICAMP’s Medical School (FCM-UNICAMP), José Dirceu Ribeiro recalls that bronchiolitis is the most common disease during the [...]ver notícia -
Genetics may play a role in Zika infection susceptibility
Publicado em 05 fevereiro 2018Microcephaly, brain calcification, skeletal alterations, auditory and visual deficits – these are examples of the damage that can be caused by Zika virus in babies born to mothers infected during pregnancy. However, these problems are observed in only 6%-12% of cases, and scientists suspect other factors besides viral infection are associated with the development of congenital Zika syndrome. A new study published on February 2 in the journal Nature Communications offers strong evidence [...]ver notícia -
Bacteria in your microbiome can change your genetics
Publicado em 16 janeiro 2018Scientists from the Babraham Institute near Cambridge in collaboration with colleagues from Brazil (here and here) and Italy have discovered a way that good bacteria in the gut can control genes in our cells. The work, published today (9th January) in Nature Communications, shows that chemical messages from bacteria can change the location of key chemical markers throughout the human genome. By communicating in this way, the bacteria may help to fight infections and to prevent cancer. This [...]ver notícia -
Zika is proving even more dangerous than thought
Publicado em 14 outubro 2017Zika virus is mutating so fast in Brazilian patients that different serotypes of the pathogen could appear in the near future, as is already the case with dengue virus. This would hinder the production of a vaccine and impair the effectiveness of the diagnostic tests already developed. The alarm was sounded by Edison Luiz Durigon, Full Professor at the University of São Paulo’s Biomedical Science Institute (ICB-USP), in Brazil. Such assertion is based on a study carried out by a group of [...]ver notícia