Cyclic mechanical stretch stress increases the growth rate and collagen synthesis of nucleus pulposus cells in vitro.
Study Design: A rabbit model designed to investigate the effects of applied cyclic tensile stress on the cell division rate and the collagen synthesis in the rabbit nucleus pulposus cells in vitro.Objective: To evaluate the effects of mechanical stress on nucleus pulposus cells, thus adding to the u...
| Publicado en: | Spine (03622436) Vol. 24; no. 4; pp. 315 - 320 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
1999 Feb 15
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=138085069&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 138085069 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03622436 1Y6 jtl: Spine (03622436) issn: 03622436 maglogo: N pubinfo: dt: 1999 Feb 15 vid: 24 iid: 4 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 138085069 138085069 NLM10065513 138085069 10.1097/00007632-199902150-00002 NLM10065513 138085069 ppf: 315 ppct: 5 formats: tig: atl: Cyclic mechanical stretch stress increases the growth rate and collagen synthesis of nucleus pulposus cells in vitro. aug: au: Matsumoto, T Kawakami, M Kuribayashi, K Takenaka, T Tamaki, T affil: Department of Orthopedic Surgery, Wakayama Medical College, Japan sug: subj: Collagen Intervertebral Disk Stress, Mechanical Prospective Studies Animal Studies Cell Count Cells, Cultured Rabbits DNA Tensile Strength Intervertebral Disk Pathology Adaptation, Physiological Cell Division Flow Cytometry Intervertebral Disk Metabolism Validation Studies Comparative Studies Evaluation Research Multicenter Studies Interview Guides ab: Study Design: A rabbit model designed to investigate the effects of applied cyclic tensile stress on the cell division rate and the collagen synthesis in the rabbit nucleus pulposus cells in vitro.Objective: To evaluate the effects of mechanical stress on nucleus pulposus cells, thus adding to the understanding of the adaptation of the intervertebral disc to mechanical stress.Summary Of Background Data: Intervertebral disc cells in vivo are exposed to a multitude of physical forces during physical motion. Although it is known that in intervertebral disc disease, a common pathway of disc degeneration is mechanical stress on the nucleus pulposus or the anulus fibrosus or both, the underlying mechanism has been less well defined.Methods: Nucleus pulposus cells were isolated from 4-week-old Japanese white rabbits. These cells were subjected to the mechanical cyclic stretch stress using a computerized, pressure-operated instrument that physically deformed the cells. The DNA synthesis rate, collagen synthesis rate, and cell cycle progression were measured.Results: Cyclic tensile stretch increased the DNA synthesis rate in nucleus pulposus cells and in the population of cells in the S phase of the cell cycle during 1 to 2 days of subjugation to stress. Cyclic tensile stretch also increased collagenous protein synthesis in nucleus pulposus cells during 1 to 4 days of stress.Conclusions: Mechanical stress on nucleus pulposus cells promotes the proliferation of cells and alters the properties of intervertebral disc cells. This study may reflect the adaptation of the intervertebral disc to increased motion and stress. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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