science newsletter: Science News SciGuru.com

Πέμπτη 6 Ιουνίου 2013

Science News SciGuru.com

Treating Sexual Violence in War-Torn Countries
Anesthetic for Depression? Mayo Clinic Study Finds Low-Dose Ketamine Effective
Alzheimer's drug reduces risk of heart attack
Female moths use olfactory signals to choose the best egg-laying sites

Treating Sexual Violence in War-Torn Countries

Posted: 05 Jun 2013 04:34 PM PDT

Anesthetic for Depression? Mayo Clinic Study Finds Low-Dose Ketamine Effective

Posted: 05 Jun 2013 08:55 AM PDT

Low-dose intravenous infusions of ketamine, a general anesthetic used in minor surgeries, given over a long period are an effective treatment for depression, Mayo Clinic researchers found. The study is published in the Journal of Psychopharmacology.

About a decade ago researchers discovered that ketamine had the potential to alleviate severe depression. However, ketamine also can have serious psychiatric side effects, so studies have been exploring the safest way to use it.

Alzheimer's drug reduces risk of heart attack

Posted: 05 Jun 2013 08:44 AM PDT

The risk of suffering a myocardial infarction is lower for people with Alzheimer's disease on so-called cholinesterase inhibitors, according to a large observation study from Umeå University and Karolinska Institutet published in The European Heart Journal. Survival is also increasing amongst patients who have received this kind of drug, compared with those who have not been treated.

Female moths use olfactory signals to choose the best egg-laying sites

Posted: 05 Jun 2013 08:39 AM PDT

Researchers at the Max Planck Institute for Chemical Ecology, Jena, Germany, discovered that the ability of Manduca sexta moths to recognize changes in the profile of volatile compounds released by plants being attacked by Manduca caterpillars allows them to lay their eggs on plants that are less likely to be attacked by insects and other predators, and to avoid competing against other caterpillars of the same species for resources.