ELECTRIC STUDIES OF EXCITATION, SECRETION &CONTRACTION

  • Almers, Wolfhard, (PI)
  • Hille, Bertil (PI)

Project: Research project

Description

DESCRIPTION: The goal of this proposal is to study the dynamics of Ca++ trafficking through cellular organelles and its relationship to the regulation of exocytosis using a combination of high time resolution patch clamp, capacitance measurements, amperometry, photometry and imaging. This will be done in single cells and adrenal slice preparations. The specific aims are: 1. Dynamics of Ca++ movement into and out of organelles. Specific hypotheses addressed are that organelles play significant roles in Ca++ homeostasis and that chromaffin secretory granules are Ca++ releasing and sequestering organelles. 2. Signaling pathway for regulated exocytosis in epithelia. The hypothesis that a cAMP-dependent pathway controls exocytosis will be tested. 3. Physiology of chromaffin cells. The hypothesis that chromaffin secretion is regulated by paracrine and modulatory actions will be tested.
StatusFinished
Effective start/end date9/1/773/31/08

Funding

  • National Institutes of Health
  • National Institutes of Health
  • National Institutes of Health
  • National Institutes of Health
  • National Institutes of Health
  • National Institutes of Health

Fingerprint

secretion
muscles
transport proteins
mast cells
cell membranes
ions
striated muscle
Chordata
cells
fluorescence microscopy
myocytes
organelles
oocytes
neurons
antigens
testing

ASJC

  • Medicine(all)