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Research Lab Results for zinc

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  • Fu Lab

    Lab Website
    Principal Investigator:
    Dax Fu, Ph.D.
    Physiology

    The Fu Lab is a basic research lab that studies zinc transport, with a particular focus on whic...h step in the zinc transport process may be modulated and how. Dr. Fu's lab uses parallel cell biology and proteomic approaches to understand how these physiochemical principles are applied to mammalian zinc transporters and integrated to the physiology of pancreatic beta cells. This research has implications for understanding how zinc transport is related to diabetes and insulin intake. view more

    Research Areas: cell biology, proteomics, zinc, pancreatic cells, diabetes
  • Intestinal Na/H Exchangers

    Principal Investigator:
    Ming-Tseh Lin, M.D., Ph.D.
    Medicine

    Secretory diarrhea is a leading cause of childhood morbidity and mortality in developing countr...ies. While diarrhea can be treated with oral rehydration solution (ORS), inclusion of zinc with oral ORS has been shown to reduce the duration of diarrhea. However, how zinc improves diarrhea is not known.

    It has been shown that zinc acts as an intestinal epithelial cell basolateral potassium channel blocker of cyclic AMP-mediated chloride secretion. We discovered that zinc also stimulates intestinal sodium and water absorption via the epithelial Na/H exchanger, NHE3. Zinc reverses the effect of cyclic AMP inhibition of NHE3 activity. The effect of zinc on NHE3 cannot be duplicated with other divalent metal ions. It has been well established that Na/H exchanger regulatory proteins are involved in NHE3 regulation.

    Whether these regulatory proteins are involved in zinc stimulation of NHE3 is a focus of our study. Our goal is to reveal mechanisms to explain how zinc improves diarrhea and to understand the role of zinc in salt and water homeostasis in the gut. Our study will provide a scientific basis to justify the inclusion of zinc in ORS for the treatment of secretory diarrhea.
    view more

    Research Areas: gastroenterology, diarrhea
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