Increases of calcium and magnesium and decrease of iron in human posterior longitudinal ligaments of the cervical spine with aging |
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| Authors: | Masako Utsumi Cho Azuma Setsuko Tohno Yoshiyuki Tohno Yumi Moriwake Takeshi Minami Masa-Oki Yamada |
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| Institution: | (1) Laboratory of Cell Biology, Department of Anatomy, Nara Medical University, Kashihara, 634-8521 Nara, Japan;(2) Laboratory of Environmental Biology, Department of Life Science, School of Sciences and Engineering, Kinki University, Higashi-Osaka, 577-8502 Osaka, Japan |
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| Abstract: | To elucidate compositional changes of ligaments with aging, the authors investigated age-related changes of elements in the
posterior longitudinal ligaments (PLLs) by inductively coupled plasma—atomic emission spectrometry. After the ordinary dissection,
PLLs were resected from the subjects ranging in age from 65 to 95 yr. The PLLs of the cervical spine were resected between
the fourth and fifth cervical vertebrae, the PLLs of the thoracic spine between the fifth and seventh thoracic vertebrae,
and the PLLs of the lumbar spine between the second and third lumbar vertebrae. Calcium and magnesium increased progressively
with aging in the PLLs of the cervical spine, but they did not increase with aging in the PLLs of the thoracic and lumbar
spine. In contrast, iron decreased gradually with aging in the PLLs of the cervical spine. Regarding the relationships among
elements, significant correlations were found among the contents of calcium, phosphorus, magnesium, and sodium in the PLLs
of the cervical spine. |
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| Keywords: | Posterior longitudinal ligament calcium phosphorus magnesium calcification aging |
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