Bedside to bench: role of muscarinic receptor activation in ultrarapid growth of colorectal cancer in a patient with pheochromocytoma.

Bedside to bench: role of muscarinic receptor activation in ultrarapid growth of colorectal cancer in a patient with pheochromocytoma.
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DOI:
10.1016/j.mayocp.2013.06.023
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发表时间:
2013-11
影响因子:
8.9
通讯作者:
Raufman JP
Raufman JP
中科院分区:
医学2区
文献类型:
--
作者:
von Rosenvinge EC;Cheng K;Drachenberg CB;Fowler CB;Evers DL;Xie G;Raufman JP

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An elderly man with long-standing, non-resectable pheochromocytoma rapidly developed rectal adenocarcinoma despite close endoscopic surveillance. We determined that the patient’s colorectal cancer over-expressed M3 subtype muscarinic receptors, whereas his pheochromocytoma expressed choline acetyltransferase, an enzyme required to produce acetylcholine, a muscarinic receptor agonist. These findings suggested that acetylcholine release from the pheochromocytoma stimulated rapid growth of the rectal neoplasm. As proof-of-principle, we demonstrate here that culture media conditioned by pheochromocytoma cells stimulates proliferation of a human colon cancer cell line, an effect attenuated by atropine, a muscarinic receptor inhibitor. Our observations provide both clinical and laboratory evidence that muscarinic receptor agonists promote the growth of colorectal neoplasia.
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