guia do novo coronavirus

Physiology

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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Chronobiology

Chronobiology: rhythms and cycles

Physics, biology and technology unite to unravel a rodent's circadian rhytms

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Zoology

Spines filled with poison

Gland at the end of hairs produces toxic secretion in stinging caterpillars

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Cytology

The hanging gardens of cells

Cultures in 3D environments reveal unknown structures

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Cover

The mechanisms of aging

Studies identify phenomena associated with physical and mental decline

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Medicine

India ink generates 3-D image of blood vessels

India ink mixed with gelatin generates 3-D image of blood vessels

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PHYSIOLOGY

Weight across generations

Among rats, tendency towards weight gain can be transmitted to children

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Neuroscience

Human companionship and fear of thunder in dogs

Research investigates whether human companionship reduces stress in dogs

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CARDIOLOGY

Energy for the heart

An increase in blood sugar can help in recovery after a heart attack

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Cytology

Suspended cell gardens

3D cell cultures help further understanding on organs and tissues

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NEUROSCIENCE

Movement for the brain

Exercise in childhood has long-lasting effects on intellectual performance

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PHARMACEUTICAL SCIENCES

The cosmetic from the Caatinga scrubland

Umbu could form the basis for an anti-aging skin cream

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