Spinal upregulation of the nitric oxide synthase-interacting protein NOSIP in a rat model of inflammatory pain.
Nitric oxide and nitric oxide synthases are key players in synaptic plasticity events in the spinal cord, which underly the development of chronic pain states. To date, little is known about the molecular mechanisms regulating the activity of nitric oxide synthases in nociceptive systems. The present study was aimed at the immunohistochemical determination of the expression of a nitric oxide synthase-interacting protein (NOSIP) in the rat spinal cord and dorsal root ganglia and studying its regulation in states of nociceptive hypersensitivity in a rat model of post-inflammatory pain. NOSIP is predominantly expressed in nociceptive primary neurons and in neurons of the spinal dorsal horn and the number of NOSIP-positive spinal neurons increases significantly following induction of unilateral intraplantar injection of complete Freund's adjuvant. Thus, NOSIP may modulate nitric oxide homeostasis in physiological and pathological pain conditions.
Dreyer
Jacqueline
J
Department of Molecular Pharmacology, Pharmacology Institute, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany.
Hirlinger
David
D
Müller-Esterl
Werner
W
Oess
Stefanie
S
Kuner
Rohini
R
D000818:Animals; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism*; D004195:Disease Models, Animal; D005620:Freund's Adjuvant; D007839:Functional Laterality; D005727:Ganglia, Spinal / Q000378:metabolism*; D006614:Hindlimb; D007150:Immunohistochemistry; D007249:Inflammation / Q000139:chemically induced / Q000378:metabolism; D007267:Injections; D037102:Lectins / Q000378:metabolism; D008297:Male; D010146:Pain / Q000201:enzymology* / Q000235:genetics / Q000378:metabolism; D010147:Pain Measurement; D010751:Phosphopyruvate Hydratase / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D013116:Spinal Cord / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D013373:Substance P / Q000378:metabolism; D013997:Time Factors; D044767:Ubiquitin-Protein Ligases; D015854:Up-Regulation
D002352:Carrier Proteins; D037102:Lectins; D013373:Substance P; D005620:Freund's Adjuvant; C419706:NOSIP protein, human; D044767:Ubiquitin-Protein Ligases; D010751:Phosphopyruvate Hydratase