Search:   Advanced Search   Gallery   About Us   Contact Us   עברית   Supreme Court Deputy-President Eliezer Rivlin (ret.) Joins Hebrew University Faculty of Law Not just our cars, but also living organisms need antifreeze to survive in the cold Nobel laureate Dr. Bruce Beutler to lecture, receive award at Lautenberg Center for Immunology and Cancer Research Learn in Israel, Heal the World: Public health leaders from 20 countries will spend nine days learning and exchanging ideas in Jerusalem Music on our Minds: international conference on music and the brain will mix science and concerts German foundation awards two €250,000 prizes to Hebrew University researchers in Humanities and Social Sciences Professor Yoram Bilu to receive Israel Prize in sociological and anthropological research How to cut down on crime? Focus police in concentrated ‘hot spots,’ says Hebrew University criminologist Healing the world: 70 graduates of International Master’s in Public Health program to attend 2nd alumni workshop, reunion in Jerusalem It's a bird, it's a plane, it's…. Hebrew U?   13 January, 2013 Hebrew University study finds key mechanism in calcium regulation The finding is important element in road towards development of new drugs for neurodegenerative diseases LAB All living cells keep their cellular calcium concentration at a very low level. Since a small increase in calcium can affect many critical cellular functions (an elevated calcium concentration over an extended period can induce cell death), powerful cellular mechanisms ensure that calcium concentration quickly returns to its low level. It is known that impairments of cellular calcium regulation underlie almost all neurodegenerative diseases. For example, age-related loss of calcium regulation was shown to promote cell vulnerability in Alzheimer’s disease. In a study recently published in the Journal of Neuroscience, Hebrew University of Jerusalem researchers, along with others from Israel and the US, presented their findings of a previously undescribed cellular mechanism which is essential for keeping cellular calcium concentration low. This mechanism operates together with other already characterized mechanisms. Dr. Shirley Weiss and Prof. Baruch Minke of the Hebrew University’s Institute of Medical Research Israel-Canada (IMRIC) and the Edmond and Lily Safra Center for Brain Sciences (ELSC) characterized this mechanism using photoreceptor cells of the fruit fly, which is a powerful model for studying basic biological processes. They found that a protein-designated calphotin (a calcium buffer) operates by sequestering elevated calcium concentration. Genetic elimination of calphotin led to a light-induced rise in cellular calcium for an abnormally extended time, leading to retinal photoreceptor degeneration in the fruit flies. The researchers stress that this kind of research, leading to a better understanding of the fundamental mechanisms underlying cellular calcium regulation, is critical for the development of new drugs and treatments for neurodegenerative diseases.
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