Cell biology

GOOD PRACTICES

MIT biologist accused of sexual harassment resigns

David Sabatini studied cell signaling and cancer metabolism

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photolab

Narrow passage

Image shows how Leukocytes squeeze through tiny pores

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INFECTIOUS DISEASES

A long-sought cure may be closer

Experimental treatment able to control HIV for six months after stopping antiretrovirals

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ZOOLOGY

Hibernation delays aging in marmots and encourages sexual maturation in ground squirrels

Studies on the effects of hibernation were carried out by Brazilian researchers in the USA

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COVID-19

Cross-infection between species

Humans have transmitted SARS-CoV-2 to animals, at least two of which have passed the virus onto other people

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COVID-19

Third dose lowers risk of death

Coronavirus vaccine booster doses significantly reduce the risk of death from COVID-19

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COVID-19

Long-term damage to the surroundings

A cellular change induced by SARS-CoV-2 may explain prolonged symptoms of the disease

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Funding

Committed effort

Survey finds investment in cancer research has fallen in Brazil

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COVID-19

The uncertainties of omicron

New SARS-CoV-2 variant is highly transmissible, but for now, there is no evidence that it causes more severe disease or more deaths

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MEDICINE

Problems in cancer studies

Problems in cancer studies

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Health

Focus on the bacillus

Fast, portable, and sensitive, a new test could be a useful tool for preventing leprosy and helping with early diagnosis.

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Endocrinology

A delicate balance

Brazilians identify new areas of the brain's hunger circuit

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COVID-19

The quest for a Brazilian vaccine

Researchers are testing a range of technologies, but few initiatives will receive the funding needed for costly phase 3 clinical trials

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Photolab

Fertility clock

Genetic alterations to the biological clock could be linked to fertility disorders

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Video

The plant biological clock benefits agriculture

Understanding the plant circadian rhythms, and learning how to manipulate them, may widen cultivation options | 2'42

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Neuroscience

Defenders more at risk of dementia

Heading has been associated for some time with an increased risk of developing neurodegenerative diseases

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Interview

Sérgio Pena: Under the skin

The Minas Gerais geneticist proves that, at the cellular level, Brazilians look the same

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Cell biology

The explosive exit of Trypanosoma cruzi

Biologist used microscopes to observe and document how the parasite returns to the blood

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HEALTH

Digital diagnosis

Software capable of identifying skin cancer with greater than 90% accuracy

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Biology

Back to life after 24,000 years

Rotifers of the Bdelloidea class are multicellular invertebrate organisms so small that they are usually only seen under a microscope

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COVID-19

The importance of the cellular response against the coronavirus

Fighting a SARS-CoV-2 infection is not solely the responsibility of antibodies, the proteins that adhere to the virus’s surface to prevent it from entering cells or mark it for destruction

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COVID-19

Superior immunity

Studies of blood and tissue samples taken before the COVID-19 pandemic may help explain why the disease is more common and more severe in adults than in children

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photolab

Lethal networks

Faced with an invasion of viruses or bacteria, human immune system cells sometimes overreact in a process known as NETosis, which has been shown to be more severe when the invader is SARS-CoV-2

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INTERVIEW

Eurico Arruda: Admirer of viruses

Coronavirus specialist and USP physician speaks about the new variants of SARS-CoV-2 and the risk they represent in the efficacy of some vaccines

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Covid-19

Antibodies reduce deaths

A clinical trial led by researchers at the University of Oxford, UK, identified a second drug capable of reducing mortality among patients with severe COVID-19

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Oncology

Better chances with time

The risk of rectal cancer recurrence is less than 5% for patients who have been tumor-free for three years after nonsurgical treatment with radiation therapy and chemotherapy

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COVID-19

The mystery of reinfections

Evidence that SARS-CoV-2 can infect the same person more than once is challenging our understanding of the virus and how we combat the disease

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COVID-19

Coronavirus and the brain

A study confirms that the novel coronavirus can infect different types of brain cells, and may be capable of directly damaging the brain

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Medicine

A jawbone made from fat cells

The researchers were able to regenerate the TMJ bone and cartilage of pigs, whose jaws are similar to those of humans, using stem cells obtained from the animals’ own fat

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Interview

Radovan Borojevic: The tamer of cells

The Croatian-born biologist and UFRJ professor emeritus speaks of the obstacles and encouraging perspectives for regenerative medicine

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