Article Publish Status: FREE
Abstract Title:

Endogenous morphine: up-to-date review 2011.

Abstract Source:

Folia Biol (Praha). 2012 ;58(2):49-56. PMID: 22578954

Abstract Author(s):

G B Stefano, R Ptáček, H Kuželová, R M Kream

Article Affiliation:

Neuroscience Research Institute, State University of New York - College at Old Westbury, 11568, USA. [email protected]


Positive evolutionary pressure has apparently preserved the ability to synthesize chemically authentic morphine, albeit in homeopathic concentrations, throughout animal phyla. Despite the establishment of a progressively rigorous and mechanistically focused historical literature extending from the mid 1970s to the mid 1980s that supported the expression of chemically authentic morphine by animal cellular and organ systems, prejudicial scepticism and early dismissal by scientists and clinicians most often obscured widespread acceptance of the biological importance and medical implications of endogenous morphine. The current critical paper presents and evaluates key recent coordinated studies in endogenous morphine research, highlighting those that have advanced our understanding of the functional roles of cognate alkaloid-selectiveμ(3) and μ(4) opiate receptors. We propose that the expression of endogenous morphine by animal and human cells is designed to mediate homeopathic regulation of metabolic activity via activation of cognate μ(3) and μ(4) receptors that serve as transductive conduits for shortcircuit Ca(++) fluxes. The implications of endogenous morphine coupling to nitric oxide regulation of mitochondrial function, with special reference to the cardiovascular system, are now formulated after many years of neglect.

Study Type : Review
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