Absence of αβ T cells accelerates disuse bone loss in male mice after spinal cord injury.
Absence of αβ T cells accelerates disuse bone loss in male mice after spinal cord injury.
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缺乏αβ T 细胞会加速雄性小鼠脊髓损伤后废用性骨质流失。
DOI:
10.1111/nyas.14518
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发表时间:
2021
影响因子:
5.2
通讯作者:
Tawfeek,HeshamA
中科院分区:
文献类型:
--
作者:
Sahbani,Karim;Shultz,LauraC;Cardozo,ChristopherP;Bauman,WilliamA;Tawfeek,HeshamA
Whether T cells promote bone loss following immobilization after spinal cord injury (SCI) remains undetermined. Therefore, wild‐type (WT) and T cell–deficient (Tcrb−/−) male mice underwent sham or contusion SCI to cause hindlimb paralysis. Femurs were isolated and distal and midshaft regions were evaluated by microcomputed tomography scanning. Bone marrow (BM) levels of bone turnover markers, as well as receptor activator of nuclear factor‐kappa B ligand (RANKL) and osteoprotegerin (OPG), were measured by ELISA. At 2 weeks post‐SCI, immobilization resulted in marked reduction in trabecular fractional bone volume (55%), thickness (40%), connectivity, and cortical thickness only in theTcrb−/−animals (interaction withP< 0.05). BM analysis revealed lower bone formation (procollagen type 1 intact N‐terminal propeptide), higher bone resorption (tartrate‐resistant acid phosphatase‐5b), and a higher RANKL/OPG ratio in theTcrb−/−SCI animals. At 5 weeks post‐SCI, while both WT andTcrb−/−paralyzed animals showed deterioration of all indices of bone structure, they were more severe inTcrb−/−animals. In summary, unlike other skeletal disorders, loss of αβ T cells compromises, rather than preserves, skeletal integrity under conditions of immobilization.
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DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
M. Schmale;E. Mckinney
通讯作者:
E. Mckinney
影响因子:
6.2
作者:
W. Hildemann
通讯作者:
W. Hildemann
DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
A. Myrberg
通讯作者:
A. Myrberg
影响因子:
6
作者:
M. Schmale;G. Hensley;L. R. Udey
通讯作者:
L. R. Udey
影响因子:
2.5
作者:
M. Schmale
通讯作者:
M. Schmale