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A team of Brazilian researchers has discovered that a gene can protect people, even those aged 90 and above, from the deadly Covid disease. Two research papers found that the frequency of variants of the gene ‘MUC22’ was twice as high in the mild Covid-19 group as in severe patients, and higher still in resilient super-agers. This gene belongs to the “mucin” family and is associated with the production of mucus, which lubricates and protects the airways. On the [...]

For the first time, scientists have shown that infection by Covid virus changes the functioning of host cell RNA, providing clues as to how different variants can escape the immune system, and serve as a basis for the development of novel treatments. Researchers at Federal University of Sao Paulo (UNIFESP) in Brazil arrived at this conclusion by analyzing 13 datasets obtained during four studies of viral, human and animal cell RNA. The study, published in Frontiers in Cellular and [...]

Patients with the most severe post-Covid smell and taste disorders are likely to perform worst in cognitive tests, especially when these involve memory, finds a study strengthening the hypothesis that loss of smell could be an early sign of the impending onset of Alzheimer's disease. In the study, a group of Brazilian researchers analysed clinical data from 701 patients hospitalised for moderate or severe Covid-19. The results, reported in European Archives of Psychiatry and Clinical [...]

In a rare case, Brazilian scientists used breast milk to treat COVID-19 in a woman with a rare genetic disease that makes her immune system unable to combat viruses and other pathogens. The patient who was diagnosed with COVID-19, in March 2021, tested positive for 124 days by RT-PCR. She was advised by the team from the University of Campinas (UNICAMP) in Sao Paulo, to take 30 millilitres of breast milk every three hours for a week. The breast milk was donated by a woman who had been [...]

Brazilian researchers have found that Omicron has mutations detected in previous variants and that is the reason why it is less severe among the vaccinated. Omicron emerged as a variant of concern only in November 2021, but all the mutations it contains, except one, had been described before that. Researchers at the Federal University of Sao Paulo (UNIFESP) in Brazil attribute this factor to the effectiveness of the existing vaccines against the variant, reflected in the relatively small [...]

Sao Paulo, Jan 28 (IANS) A team of international researchers have found that the novel coronavirus can continue to be present in some human bodies upto 232 days. Researchers from France’s Pasteur Institute, the University of Sao Paulo (USP) and Oswaldo Cruz Foundation (Fiocruz) in Brazil conducted a study involving 38 Brazilian patients. The patients were followed until they tested negative twice or three times consecutively by RT-PCR. Of the 38 cases tracked, two men and a woman [...]

A review of the scientific literature published by Brazilian researchers shows that pregnant women infected by the novel coronavirus run a higher risk of developing pre-eclampsia, a pregnancy complication characterized by persistent high blood pressure, usually in the second half of pregnancy or shortly after delivery. The disorder can cause serious harm to mother and baby. An article with the findings of the review is published in the journal Clinical Science. The authors analyzed a [...]

Sao Paulo, Jul 7 (IANS): Brazilian researchers have found that tissues which specialise in saliva production and secretion can serve as reservoirs for SARS-CoV-2, the virus causing Covid-19, magnifying its infectious potential. Researchers at the University of Sao Paulo (USP) analysed samples from three types of salivary gland obtained during a minimally invasive autopsy procedure performed on 24 patients who died from complications of Covid-19 and discovered that SARS-CoV-2 infects and [...]

Sao Paulo, May 19 (IANS) - People who have had dengue in the past are twice as likely to develop symptoms of Covid-19 if they are infected by coronavirus, finds a new study. The study, led by University of Sao Paulo in Brazil, detected the presence of antibodies against dengue virus and SARS-CoV-2 in blood samples from 1,285 inhabitants of Mancio Lima, a small town in the state of Acre, part of Brazil’s Amazon region. “Our results show that the populations most exposed to dengue, [...]