Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro.

Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro. Research Abstract Details 

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Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro. Abstract Text:

Deyu Duan,Shuhua Yang,Zengwu Shao,Hong Wang,Xiaoqian Xiong,

The protective effect of niacinamide on interleukin-1beta (IL-1beta)-induced annulus fibrosus (AF) type II collagen degeneration in vitro and the mechanism were investigated. Chiba's intervertebral disc (IVD) culture models in rabbits were established and 48 IVDs from 12 adult Japanese white rabbits were randomly divided into 4 groups: normal control group, niacinamide-treated group, type II collagen degneration group (IL-1beta) and treatment group (niacinamide+IL-1beta). After culture for one week, AFs were collected for inducible nitric oxide synthase (iNOS), cysteine containing aspartate specific protease-3 (Caspase-3) and type II collagen immunohistochemical examination, and type II collagen reverse transcription polymerase chain reaction (RT-PCR). The results showed that rate of iNOS positive staining AF cells in the 4 groups was 17.6%, 10.9%, 73.9% and 19.3% respectively. The positive rate in treatment group was significantly lower than in the type II collagen degeneration group (P<0.01). Rate of Caspase-3 positive staining AF cells in the 4 groups was 3.4%, 4.2%, 17.6% and 10.3% respectively. The positive rate in treatment group was lower than in the type II collagen degeneration group (P<0.01). Type II collagen staining demonstrated that lamellar structure and continuity of collagen in treatment group was better reversed than in the degeneration group. RT-PCR revealed that the expression of type II collagen in treatment group was significantly stronger than that in type II collagen degeneration group (P<0.01). It was concluded that niacinamide could effectively inhibit IL-1beta stimulated increase of iNOS and Caspase-3 in AF, and alleviate IL-1beta-caused destruction and synthesis inhibition of type II collagen. Niacinamide is of potential for clinical treatment of IVD degeneration.

Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro. Publishing Authors By Initials

D Duan,S Yang,Z Shao,H Wang,X Xiong,

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Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of Huazhong University of Science and Tech

VOLUME: 27

Page Numbers: 68-71

Journal Abbreviation: J. Huazhong Univ. Sci. Technol

ISSN: 1672-0733

DAY: 29

MONTH: Feb

YEAR: 2007

Protective effect of niacinamide on interleukin-1beta-induced annulus fibrosus type II collagen degeneration in vitro. Information

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LANGUAGE: eng

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AFFILIATION: Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. duandeyu@21cn.com

Country: China

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MEDLINETA: J Huazhong Univ Sci Technolog

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