Guia Covid-19

Cell biology

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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COVID-19

SARS-CoV-2 can attack immune cells

The novel coronavirus is capable of infecting and killing immune cells, say researchers from the University of São Paulo in Ribeirão Preto

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Biochemistry

The trigger for muscular strength

An international group of researchers has identified a chemical compound that functions as a molecular trigger for the strength gains caused by physical exercise

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Cover

The puzzle of immunity

Crucial questions about the response of the immune system to the novel coronavirus remain unanswered

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COVID-19

A potential virus reservoir

Adipose tissue may act as a reservoir for the novel coronavirus, suggests a study conducted by researchers at the University of Campinas

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Neuroscience

Early deficit

People with Huntington's disease tend to produce fewer neurons since birth

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Cover

Natural guests

Abundant viruses contribute to the genetic diversity of life on Earth and may have emerged four times throughout the planet's history

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Interview

Michel Nussenzweig: Antibody hunter

Brazilian-born immunologist searches the plasma of patients who have survived COVID-19 for proteins capable of fighting the novel coronavirus

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Cover

The antivirus arsenal

The search for an effective treatment for COVID-19 includes testing drugs already used against other diseases and even plasma

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Coronavirus

Virus on the attack

Transmission electron microscope images provide a detailed look at how SARS-CoV-2 attacks, infects, and replicates in a culture of Vero cells

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Interview

Gene therapy on the horizon

American biochemist Jennifer Doudna, from the University of California, Berkeley, is one of the best-known names behind the CRISPR-Cas9 gene-editing technique

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Immunology

Battle of the cells

Experimental therapy tested for the first time in Brazil uses a patient's own defense system to fight cancer

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Photolab

Biological engineering

Lab-made vascular cells actively produce a coagulation factor

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Profile

In cells, the answer

Scientist combines knowledge of molecular biology and information technology to create genetic testing startup

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Oncology

Mapped-out risk

Study identifies the genetic profile of Brazilian patients with a rare disease that causes a specific type of thyroid cancer

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INTERVIEW

Glaucius Oliva: Complex structures

Self-declared molecule tamer, physicist marries scientific research with administrative management

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Medicine

Homage to Henrietta Lacks and her cells

Johns Hopkins University, USA, is to name a new ethics research building in honor of Henrietta Lacks

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