measuring degranulation by flow

From: Becky Kelly (Eak@medicine.wisc.edu)
Date: Fri Mar 03 2000 - 13:54:18 EST


1) Does anyone have experience evaluating  degranulation of
eosinophils (or other granulocytes)  by flow cytometric analysis?
(Using either scatter or intracellular stain)

2) I received a lot of queries regarding a previous question, but no
"answers".   Does anyone have any ideas?

" I am measuring cell surface receptors for cytokines.  How do I
know if a decrease in fluorescence is due to modulation of  receptor
or to masking of the receptor by cytokines that are acquired in vivo?
I have tried, unsuccessfully,  to detect surface-bound cytokine before
and after incubating cells with cytokine.  Is there a way to
dissociate ligand-receptor complexes without altering the receptor in
the process?"

Thanks-Becky



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