Visceral organ cross-sensitization - an integrated perspective.
Viscero-somatic referral and sensitization has been well documented clinically and widely investigated, whereas viscero-visceral referral and sensitization (termed cross-organ sensitization) has only recently received attention as important to visceral disease states. Because second order neurons in the CNS have been extensively shown to receive convergent input from different visceral organs, it has been assumed that cross-organ sensitization arises by the same convergence-projection mechanism as advanced for viscero-somatic referral and sensitization. However, increasing evidence also suggests participation of peripheral mechanisms to explain referral and sensitization. We briefly summarize behavioral, morphological and physiological support of and focus on potential mechanisms underlying cross-organ sensitization.
Brumovsky
P R
PR
Pittsburgh Center for Pain Research, Department of Anesthesiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. Pablo_Brumovsky@yahoo.com
Gebhart
G F
GF
D000818:Animals; D001341:Autonomic Nervous System / Q000502:physiology*; D002490:Central Nervous System / Q000502:physiology; D041981:Gastrointestinal Tract / Q000294:innervation; D006801:Humans; D040542:Mechanotransduction, Cellular / Q000502:physiology; D012679:Sense Organs / Q000294:innervation* / Q000502:physiology*; D012867:Skin / Q000294:innervation; D001743:Urinary Bladder / Q000294:innervation; D017833:Visceral Afferents / Q000502:physiology*
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