Guia Covid-19

Physiology

Physiology

A vein under pressure

Following transplantation to the heart in surgeries to treat coronary artery disease, saphenous veins undergo drastic restructuring and can become clogged

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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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COVID-19

Severe illness in children

A rare syndrome linked to the novel coronavirus causes lesions in multiple organs

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COVID-19

Lasting consequences

People who survive SARS-CoV-2, even those not hospitalized, can suffer the effects of the infection for months after the most intense symptoms subside

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COVID-19

The months-long consequences of COVID-19

The long-term effects of COVID-19 are becoming clearer

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COVID-19

Preexisting antibodies against SARS-CoV-2

Antibodies against other varieties of coronavirus are in some cases capable of recognizing SARS-CoV-2 and providing some degree of protection to those who have not yet contracted the COVID-19 pathogen

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Physiology

A new pair of salivary glands

Newly identified salivary glands are located in the area between the nose, ears, and throat

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Cover

The effects of COVID-19

The novel coronavirus can affect the lungs, heart, kidneys, pancreas, and brain, causing long-term damage after the acute phase of the disease has passed

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Careers

Breath work

Respiratory physiotherapy training goes beyond undergraduate level, with increasing opportunities for work in hospitals

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Photolab

Mutilated courtship

Scorpions of the genus Ananteris can shed their stinger when attacked

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Careers

The fight against suffering

Brazilian researcher wins international award for his studies on chronic pain

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Sports

Sports and injuries

Athletes over the age of 30 should pay special attention to injury risk

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Physiology

The orphans of the Romanian dictatorship

Adults who were deprived of food and social contact in their early years have smaller brains, according to a study

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Medicine

Marathons and the heart

The physical preparation for running a marathon for the first time can lower blood pressure and stiffen the aortic valve

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Nobel

A prize for men

This year, the six Nobel Prize categories honored 14 people

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Ethology

High-altitude flight

The bar-headed goose is capable of flying at great heights

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Genetics

New mutations linked to short stature

DNA testing reveals origin of 15% of growth disorders without a known cause in children

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Health

Exercise with blood-flow restriction reduces symptoms of arthritis

Performing low-load resistance exercises can reduce the pain and discomfort of rheumatoid arthritis

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Medicine

Jean Purdy’s overlooked contribution to IVF

British nurse and embryologist Jean Purdy made a decisive contribution to the development of in vitro fertilization

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Physiology

An enemy unknown

Brazilian researchers find that fasting causes growth hormone to activate neurons that induce hunger and undermine weight loss

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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

Reversing Wasting Syndrome

Physical exercise can halt cachexia, the inflammation that induces unwanted weight loss and worsens cancer and other diseases

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Twins Study

Effects of a long space journey

A long stay in space causes changes to the body that can last for months, even after returning to Earth

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Physiology

Weight across generations

Among rats, the effects of excessive or insufficient feeding can be transmitted to children and grandchildren

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Cover

The mechanisms of aging

Studies of living cells and organisms identify genetic and molecular phenomena associated with physical and mental decline

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CHRONOBIOLOGY

A clock that works in the dark

Researchers come together to reveal the circadian rhythms of tuco-tucos

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fertility

Male fertility halves in 40 years

The number of sperm produced by men has fallen by half over the last 40 years

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Genetics

The secret of seedless grapes

Researchers confirmed the molecular mechanism that causes grapes to be seedless

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MEDICINE

Reversing Wasting Syndrome

Physical exercise can halt cachexia, the inflammation that induces weight loss

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biodiversity

Tiny spiders have different mechanisms for recognizing colors

Tiny spiders have different mechanisms for recognizing colors

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