Tag Archives: hormone secretion

How living cells solved a needle in a haystack problem to generate electrical signals

Scientists have figured out how calcium channels – the infinitesimal cell membrane pores that generate electrical signals by gating a charged-particle influx – have solved a “needle in a haystack” problem.

The solution to the longstanding riddle is reported in the Nov. 24 advanced online edition of Nature by UW and Howard Hughes Medical Institute investigators. Dr. Ning Zheng, a noted X-ray crystallographer, and Dr. William Catterall, a pioneer in ion channel research, were the senior researchers, and Dr. Lin Tang and Dr. Tamer Gamal El-Din headed the project. (more…)

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Unexpected Discovery on Hormone Secretion

A team of geneticists at the Institut de recherches cliniques de Montréal (IRCM), directed by Dr. Jacques Drouin, made an unexpected discovery on hormone secretion. Contrary to common belief, the researchers found that pituitary cells are organized in structured networks. The scientific breakthrough was published yesterday by the scientific journal Proceedings of the National Academy of Sciences (PNAS). Dr. Drouin is a full professor in the Department of Biochemistry (accreditation in molecular biology) at the Université de Montréal. (more…)

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