Our immune system defends us from harmful bacteria and viruses, but, if left unchecked, the cells that destroy those invaders can turn on the body itself, causing auto-immune diseases like type-1 diabetes or multiple sclerosis. A molecule called insulin-like growth factor-1 (IGF-1) boosts the body's natural defence against this 'friendly fire', scientists at the European Molecular Biology Laboratory (EMBL) in Monterotondo, Italy, have found.

Ordinary over the counter painkillers and anti-inflammatory drugs purchased from pharmacies may also be effective in the treatment of people suffering of depression. This is shown by the largest ever meta-analysis that has just been published by a research group from Aarhus University in the journal JAMA Psychiatry.

Viagra could be used as a safe treatment for heart disease, finds new research published in the open access journal BMC Medicine. The study reveals that long-term daily treatment of Viagra can provide protection for the heart at different stages of heart disease, with few side effects.

Scientists at Imperial College London have developed a new cancer drug which they plan to trial in multiple myeloma patients by the end of next year. In a paper published in the journal Cancer Cell, the researchers report how the drug, known as DTP3, kills myeloma cells in laboratory tests in human cells and mice, without causing any toxic side effects, which is the main problem with most other cancer drugs.

An international group of scientists led by Gang Han, PhD, at the University of Massachusetts Medical School, has combined a new type of nanoparticle with an FDA-approved photodynamic therapy to effectively kill deep-set cancer cells in vivo with minimal damage to surrounding tissue and fewer side effects than chemotherapy.

Biomedical engineering researchers have developed a drug delivery system consisting of nanoscale "cocoons" made of DNA that target cancer cells and trick the cells into absorbing the cocoon before unleashing anticancer drugs. The work was done by researchers at North Carolina State University and the University of North Carolina at Chapel Hill.

Results of a small clinical trial suggest that a chemical derived from broccoli sprouts - and best known for claims that it can help prevent certain cancers - may ease classic behavioral symptoms in those with autism spectrum disorders (ASDs). The study, a joint effort by scientists at MassGeneral Hospital for Children and the Johns Hopkins University School of Medicine, involved 40 teenage boys and young men, ages 13 to 27, with moderate to severe autism.