Effect of Morphine and Bupivacaine on Nicotine-Induced Catecholamine Secretion from Encapsulated Chromaffin Cells


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The control of intractable pain through transplanted of chromaffin cells has been recently reported where the analgesic effects are principally due to the production of opioid peptides and catecholamines (CAs) by the chromaffin cells. Currently many cancer patients receive general opioids or local anesthetics, such as bupivacaine. Therefore, the present study investigated the effect of morphine or bupivacaine on the secretion of nicotine-induced CAs from encapsulated chromaffin cells over a period of 180 min. As such, bovine chromaffin cells were isolated and encapsulated with alginate–poly–L–lysine–alginate (APA) biomaterials to prevent immunorejection. The capsules were then pre-incubated with nicotine for 5 min prior to morphine or bupivacaine stimulation, and the quantity of CAs analyzed using a high performance liquid chromatography (HPLC) analysis system. The resulting data showed that the encapsulated chromaffin cells retained the ability of their parent chromaffin cells when responding to opioids by suppressing the release of CAs. In contrast, bupivacaine did not have any statistically significant affect on the basal and nicotine-induced CA release from the encapsulated chromaffin cells.



Key Engineering Materials (Volumes 277-279)

Edited by:

Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo




H. Y. Hong et al., "Effect of Morphine and Bupivacaine on Nicotine-Induced Catecholamine Secretion from Encapsulated Chromaffin Cells ", Key Engineering Materials, Vols. 277-279, pp. 56-61, 2005

Online since:

January 2005




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