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. 2024 Nov 29;15:1452774. doi: 10.3389/fmicb.2024.1452774

FIGURE 1.

FIGURE 1

The IVD is affected by many factors (age, mechanical load, obesity, gut microorganisms, nutritional disorders, transmission, nutritional disorders, etc.) and undergoes a series of pathological changes (cell loss, inflammation, extracellular matrix degradation, NP fibrosis, vascular, neural proliferation, CEP calcification, AF disruption, oxidative stress, etc.) leading to IDD. Abbreviations: IVD, intervertebral disk; IDD, intervertebral disk degeneration; NP, nucleus pulposus; CEP, cartilage endplate; AF, annulus fibrosus.