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infectious disease

A light micrograph of plaques in someone with lupus

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Discovery of a genetic cause of lupus could lead to new treatments

Scientists sequenced the DNA of a 7-year-old girl with severe lupus, which suggests mutations to the gene TLR7 may cause the autoimmune condition

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Nerve demyelination. Coloured transmission electron micrograph (TEM) of a section through a Schwann cell and a nerve fibre, showing the early collapse of its myelin sheath. Myelin (red) is an insulating fatty layer that surrounds the nerve fibre (axon, orange), increasing the speed at which nerve impulses travel. It is formed when a Schwann cell (green) wraps around the fibre, depositing layers of myelin between each coil. Demyelination occurs in nerve disorders such as multiple sclerosis (MS). Patches (lesions) of myelin sheath are destroyed and nerve function is impaired. Magnification: x3800 when printed 10 centimetres wide.

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MS reversed by transplanted immune cells that fight Epstein-Barr virus

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Rear view of sick girl with stuffed toy sitting on bed. Female child patient is resting in ward at clinic. She is wearing hospital gown.

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Mystery outbreak of hepatitis in children investigated in the UK

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A coloured MRI scan of a healthy two-year-old's brain

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Map of how our brain changes with age could help diagnose diseases

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2CE12PN Amyloid plaques forming between neurons. Beta-amyloid protein disrupting nerve cells function in a brain with Alzheimer's disease

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Genes linked to Alzheimer’s may help calculate your risk of getting it

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White-tailed Deer

Life

Humans have spread diseases to other animals many times

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Learning to live with covid-19 means covering up coughs and sneezes

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Learning to live with covid-19 means covering up coughs and sneezes

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High cholesterol levels. Computer artwork balls of cholesterol in a blood vessel. Cholesterol is a lipid, a fat-like substance. High blood levels of LDL (low-density lipoprotein) cholesterol compared to HDL (high-density lipoprotein) cholesterol are thought to raise the risk of atherosclerosis, the build-up of fatty deposits on artery walls. This is a major cause of heart attack and stroke.

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Fat levels in blood predict risk of type 2 diabetes and heart disease

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Amyloid plaques

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Cell studies suggest a way sleep loss may be linked to Alzheimer’s

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Ultrasound can control genetically altered brain cells in mice

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Ultrasound can control genetically altered brain cells in mice

A new technique called sonogenetics uses ultrasound to switch on and off genetically altered brain cells. It has been successfully tested in mice, and could be a future tool for treating brain conditions such as Parkinson's or epilepsy in humans

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Life

1 in 3 birds tested at an Australian animal hospital have chlamydia

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How much more contagious could the coronavirus get?

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Antibiotic resistance killed more people than malaria or AIDS in 2019

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Technology

Corkscrew-shaped robot swims through blood vessels to clear blockages

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