Bone Abstracts

Osteoclast (OC)-mediated bone destruction is a key feature of rheumatoid arthritis (RA). In RA synovial tissue a reduced density of catecholaminergic nerve fibres has been observed. Studies on sweat gland innervation proved that catecholaminergic fibres have the ability to undergo a phenotypic transition to cholinergic nerves. The sympathetic neurotransmitters norepinephrine (NE), acetylcholine (ACh), and vasoactive intestinal peptide (VIP) affect osteoclastogenesis oppositely...