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1.
Oxid Med Cell Longev ; 2022: 7299005, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36573114

RESUMO

The incidence of low back pain caused by lumbar disc degeneration is high, and it can lead to loss of work ability and impose heavy social and economic burdens. The pathogenesis of low back pain is unclear, and there are no effective treatments. With age, the deposition of advanced glycation end products (AGEs) in intervertebral disc (IVD) gradually increases and is accelerated by diabetes and a high-AGEs diet, leading to destruction of the annulus fibrosus (AF), nucleus pulposus (NP), and cartilage endplate (CEP) and finally intervertebral disc degeneration (IDD). Reducing the accumulation of AGEs in IVD and blocking the transmission of downstream signals caused by AGEs have a significant effect on alleviating IDD. In this review, we summarize the mechanism by which AGEs induce IDD and potential treatment strategies.


Assuntos
Anel Fibroso , Degeneração do Disco Intervertebral , Disco Intervertebral , Dor Lombar , Humanos , Degeneração do Disco Intervertebral/patologia , Dor Lombar/patologia , Disco Intervertebral/patologia , Anel Fibroso/patologia , Produtos Finais de Glicação Avançada
2.
Orthop Surg ; 5(4): 280-8, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24254452

RESUMO

OBJECTIVE: To investigate the influence of bone marrow stromal stem cell (BMSCs) transplantation on healing of fractures combined with central nerve injuries in rats. METHODS: Forty-eight healthy adult SD male rats were randomly divided into the following three groups (16 rats in each group): group A, simple (left) tibial fracture; group B, tibial fracture combined with T10 spinal cord transection (SCT); group C, tibial fracture combined with T10 SCT and BMSCs transplantation. The tibial fractures were stabilized with modular intramedullary nails and all operated hind limbs were further immobilized in plaster casts to prevent unequal load bearing. BMSCs were labeled with bromodeoxyuridine and implanted into the fractures of C group rats 2 days after creation of the model. The animals in B and C groups were evaluated by postoperative Tarlov scores. The fractured tibiae were evaluated separately radiographically (X-ray and CT) and immunohistochemically 1, 2, 3 and 4 weeks after injury to assess fracture healing. In addition, the wet weights of the left tibias were measured. RESULTS: All Tarlov score of the B and C group animals reached the requirements of the experiment. One, 2 and 3 weeks after surgery, the tibial callus widths in B and C group animals were significantly greater than those of group A rats (P < 0.05). At 4 weeks the tibial callus width in group C animals had decreased, but still differed significantly from that in group A rats (P < 0.05). One, 2, 3 and 4 weeks after surgery, the wet weights of B and C group tibias were significantly greater than those of group A (P < 0.05). Hematoxylin-eosin-stained sections showed bony union and increased bone trabecula in B and C groups and areas with particles positive for alkaline phosphatase staining were more abundant in groups B and C, especially in group C. CONCLUSION: Neural regulation plays an important role in fracture healing. Treatment with BMSCs has a positive effect on defective callus in rats that have been subjected to SCT.


Assuntos
Consolidação da Fratura/fisiologia , Transplante de Células-Tronco Mesenquimais/métodos , Traumatismo Múltiplo/terapia , Traumatismos da Medula Espinal/terapia , Fraturas da Tíbia/terapia , Fosfatase Alcalina/metabolismo , Animais , Biomarcadores/metabolismo , Calo Ósseo/metabolismo , Calo Ósseo/patologia , Técnicas de Cultura de Células , Proliferação de Células , Separação Celular/métodos , Modelos Animais de Doenças , Fixação Intramedular de Fraturas/métodos , Masculino , Traumatismo Múltiplo/diagnóstico por imagem , Ratos , Ratos Sprague-Dawley , Fraturas da Tíbia/diagnóstico por imagem , Fraturas da Tíbia/metabolismo , Tomografia Computadorizada por Raios X
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