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Male fruit flies whose sexual advances are rejected by females, turn to alcohol finds a new study. Scientists at the University of California, San Francisco discovered that rejected male flies have a tiny molecule in their brain that pushes them to drink far more than their sexually satisfied counterparts. The levels of the molecule, neuropeptide F, were higher in sexually satisfied males than in those who got no sex, leading scientists to speculate that their work could shed light on brain mechanisms behind human addiction. A similar human molecule - neuropeptide Y - may also link social triggers to behaviors such as heavy drinking and drug abuse, according to the study published in Science journal.
This weekend Médecins Sans Frontières (MSF) will be launching a meningitis vaccination campaign to fight an epidemic of meningitis A that has broken out in northeast Chad. The vaccination effort, covering 200,000 people, will take place in the Iriba and Guéréda districts, already hosting tens of thousands of refugees who have fled the war-torn region of Darfur in Sudan.
Fourteen to 18-year-old adolescents are at an increased risk to initiate smoking when they start to work, according to researchers from the Johns Hopkins Bloomberg School of Public Health.
Agonizing physical pain, known as vaso-occlusive pain, can afflict children who have sickle cell disease (SCD). In some cases infants as young as two months of age suffer vaso-occlusive pain so severe that opiate medications and hospitalizations are their only relief. Researchers believe vaso-occlusion is caused by a blockage of the blood vessels that occurs when sickle shaped red cells attempt to pass through the round blood vessels.
A Brandeis University study published in Nature shows for the first time that a molecular signal maintains coherence among brain clock cells that regulate daily activity of Drosophila melanogaster (fruit flies).
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