5-HT: 5-hydroxytryptamine

AMPA: α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid

CB1/CB2: cannabinoid receptor type 1 and 2

CFA: complete Freund’s adjuvant

cGMP: cyclic guanosine monophosphate

COX: cyclooxygenase

GABA: gamma-Aminobutyric acid

GC/MS: gas chromatography/mass spectrometry

HPLC: high performance liquid chromatography

IL-1β: interleukin 1β

IL-8: interleukin 8

L-NAME: N-nitro-l-arginine methyl Ester

NMDA: N-methyl d-aspartate

NO: nitric oxide

NOS: nitric oxide synthase

NSAIDs: non-steroidal aintiinflammatory drugs

PCPA: p-chlorophenylalanine

PGE2: prostaglandin E2

PGF2α: Prostaglandin F2α

PGI2: prostacyclin

PGs: prostaglandins

PKC: protein kinase C

PMA: phorbol 12-myrstrato 13-aspartate

TNFα: tumor necrosis factor α

TRPV1: transient receptor potential vanilloid 1