title: An Animal Model of Modic Changes by Embedding Autogenous Nucleus Pulposus inside Subchondral Bone of Lumbar Vertebrae.
abstract: The establishment of Modic changes (MCs) in animal model was vital for research of MCs. Fifty-four rabbits were divided into a sham group, a muscle embedment group (ME group) and nucleus pulposus (NP) embedment group (NPE group). In the NPE group, the discs were exposed by the lumbar anterolateral surgical approach. A needle was used to puncture the L5 vertebral body close to the endplate. NP was extracted by a syringe from L1/2 intervertebral discs and then injected into the drilled hole of subchondral bone. The muscle embedment group and sham group had the same procedure and drill method as the NP embedment group. Some pieces of muscle were put into the hole in the ME group, but nothing was put into the hole in the sham group. After the operation, MRI scan and molecular biology tests were applied. The signal changes were found in the NPE group; while the sham group and the ME group showed no significant signal change. Histological observation confirmed that there was abnormal tissue proliferation in imbed site. High expression of IL-4, IL-17 and IFN-γ were detected in the NPE group. The embedment of NP into subchondral bone can create an animal model of MCs.
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Han
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Hong-Qiang
authors.initials: HQ
authors.lastname: Jiang
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Jian-Xiong
authors.initials: JX
authors.lastname: Ma
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Peng
authors.initials: P
authors.lastname: Tian
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Jia-Cheng
authors.initials: JC
authors.lastname: Zang
authors.affiliation: Tianjin Hospital, No. 406 Jiefangnan Road, Hexi District, Tianjin City 300211, PR China.
authors.forename: Xin-Long
authors.initials: XL
authors.lastname: Ma
mesh_terms: D000818:Animals; D015551:Autoimmunity / Q000276:immunology*; D049109:Cell Proliferation; D004195:Disease Models, Animal; D007371:Interferon-gamma / Q000096:biosynthesis; D020381:Interleukin-17 / Q000096:biosynthesis; D015847:Interleukin-4 / Q000096:biosynthesis; D007403:Intervertebral Disc / Q000473:pathology*; D055959:Intervertebral Disc Degeneration / Q000276:immunology / Q000473:pathology*; D017116:Low Back Pain / Q000209:etiology*; D008159:Lumbar Vertebrae / Q000276:immunology / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D000070614:Nucleus Pulposus / Q000276:immunology / Q000473:pathology*; D011817:Rabbits; D058504:Th17 Cells / Q000276:immunology; D018418:Th2 Cells / Q000276:immunology
chemical_list: D020381:Interleukin-17; D015847:Interleukin-4; D007371:Interferon-gamma