Glucosamine HCl alters production of inflammatory mediators by rat intervertebral disc cells in vitro.
Spine J
; 7(5): 601-8, 2007.
Article
em En
| MEDLINE
| ID: mdl-17905323
ABSTRACT
BACKGROUND CONTEXT Studies on cartilage have shown anti-inflammatory effects of glucosamine related to inhibition of inflammatory mediators. Intradiscal injection of glucosamine has been proposed as a treatment for chronic discogenic low back pain. However, there have been no studies of the direct effects of glucosamine on disc cells. PURPOSE:
To determine the effects of glucosamine HCl on pro-inflammatory mediator production by intervertebral disc cells. STUDYDESIGN:
An in vitro, experimental study of interleukin-1 (IL-1) stimulated rat intervertebral disc cells treated with and without glucosamine HCl.METHODS:
Rat annulus and nucleus cells were cultured in alginate beads and exposed to IL-1a (10 ng/mL)+glucosamine HCl (4.5 mg/mL), IL-1 alone, or neither for 4 and 7 days. Cell viability and IL-6, tumor necrosis factor alpha (TNF-alpha), prostaglandin E(2) (PGE(2)), and NO levels in the medium were quantified and compared across treatments.RESULTS:
Annulus cells, 7 days Glucosamine completely inhibited IL-6 and TNF-alpha, increased NO (by 75%), and reduced viability (by 89%) compared with IL-1 alone. Nucleus cells, 7 days Glucosamine reduced IL-6 (by 89%), PGE(2) (91%), and NO (90%) with no effect to viability.CONCLUSIONS:
Glucosamine inhibits inflammatory mediator production by IL-1 stimulated disc cells, but also adversely affects the viability of rat annulus cells. The response is cell-type dependent, illustrated by differences for annulus and nucleus cells.
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Base de dados:
MEDLINE
Assunto principal:
Mediadores da Inflamação
/
Glucosamina
/
Disco Intervertebral
Limite:
Animals
Idioma:
En
Ano de publicação:
2007
Tipo de documento:
Article