Decrease with aging of the microcirculatory function of the lumbar vertebral marrow preceding the loss of bone material density and the onset of intervertebral discal degeneration: A study about the potential cause
Objective: Using a dynamic computed tomographic perfusion (CTP) imaging method to explore the age-related distribution of the microcirculation perfusion function in the vertebral marrow, the bone material density (BMD), and the intervertebral discal degeneration (IDD). Further, to discuss a possible...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
KeAi Communications Co., Ltd.
2015
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/efa7880d029b43fe89d2337119ce065e |
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| Sumario: | Objective: Using a dynamic computed tomographic perfusion (CTP) imaging method to explore the age-related distribution of the microcirculation perfusion function in the vertebral marrow, the bone material density (BMD), and the intervertebral discal degeneration (IDD). Further, to discuss a possible causation relationship between them. Methods: One hundred and eighty-six people were randomly enrolled by stratified sampling and grouped by age: â¤15, 16â25, 26â35, 36â45, 46â55, 56â65, 66â75, and â¥76 years old. The average CTP and BMD of the third and fourth lumbar vertebrae marrow were measured and the IDD incidence of the third-fourth vertebrae was assessed. The temporalâspatial distribution patterns of the age-related changes of the CTP, BMD, and IDD were described, and the correlations between them were calculated. Results: The microcirculatory perfusion function of the vertebral marrow develops to maturity by 25 years and is maintained until age 35, then declines with aging. The BMD grew to a peak from 26 to 45 years old, then decreased yearly. The IDD showed a sudden increase after 45 years of age. The CTP [BF (r = 0.806, P = 0.000), BV (r = 0.685, P = 0.005) and PMB (r = 0.619, P = 0.001)] showed strong positive correlations and CTP [TTP (r = â0.211, P = 0.322) and MTT (r = â0.598, P = 0.002)] showed negative correlations with BMD. The CTP [BF (r = â0.815, P = 0.000), BV (r = â0.753, P = 0.000) and PMB (r = â0.690, P = 0.000)] had strong negative correlations, and CTP [TTP (r = 0.323, P = 0.126) and MTT (r = 0.628, P = 0.001)] had positive correlations with the incidence of IDD. Conclusion: The decrease with aging of the microcirculatory perfusion in the lumbar vertebral marrow preceded, and is a potential causative factor for the loss of BMD and the onset of IDD. Keywords: Lumbar spinal degeneration, Microcirculatory function, Hemodynamics, CT perfusion (CTP) |
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