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.
复制标题

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
复制
发表时间:
2021
影响因子:
5.2
通讯作者:
Tawfeek,HeshamA
Tawfeek,HeshamA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Sahbani,Karim;Shultz,LauraC;Cardozo,ChristopherP;Bauman,WilliamA;Tawfeek,HeshamA

文献摘要

参考文献

相似文献

T细胞是否促进脊髓损伤(SCI)后制动后的骨丢失仍不确定。因此,野生型(WT)和T细胞缺陷型(Tcrb−/−)雄性小鼠接受假手术或挫伤SCI,导致后肢瘫痪。分离股骨,通过显微计算机断层扫描评价股骨远端和中段区域。通过ELISA测定骨髓(BM)中骨转换标志物以及核因子-κ B配体受体激活剂(RANKL)和骨保护素(OPG)的水平。在SCI后2周,制动导致仅Tcrb −/−动物的骨小梁体积分数(55%)、厚度(40%)、连接性和皮质厚度显著减少(相互作用P < 0.05)。BM分析显示Tcrb −/−SCI动物的骨形成较低(1型前胶原完整的N末端前肽),骨吸收较高(抗酒石酸酸性磷酸酶-5b),RANKL/OPG比值较高。在SCI后5周,WT和Tcrb −/−瘫痪动物的所有骨结构指标均出现恶化,但Tcrb −/−动物的情况更为严重。总之,与其他骨骼疾病不同,αβ T细胞的损失损害,而不是保持,在固定条件下的骨骼完整性。
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.
双色雀鲷 Pomacentrus partitus 的免疫反应及其在神经源性肿瘤发展中的潜在作用
DOI: --
发表时间: 1987
期刊:
影响因子: --
作者:
M. Schmale;E. Mckinney
通讯作者: E. Mckinney
DOI: 10.1097/00007890-197208000-00019
发表时间: 1972
期刊: Transplantation
影响因子: 6.2
作者:
W. Hildemann
通讯作者: W. Hildemann
双色雀鲷的行为学,Eupomacentrus partitus(双鱼座:Pomacentridae):实验室和现场行为的比较分析
DOI: --
发表时间: 1972
期刊:
影响因子: --
作者:
A. Myrberg
通讯作者: A. Myrberg
DOI: --
发表时间: 1983
影响因子: 6
作者:
M. Schmale;G. Hensley;L. R. Udey
通讯作者: L. R. Udey
双色雀鲷 (Eupomacentrus partitus) 雄性的性选择和繁殖成功率(双鱼座:Pomacentridae)
DOI: 10.1016/s0003-3472(81)80069-3
发表时间: 1981
期刊: Animal Behaviour
影响因子: 2.5
作者:
M. Schmale
通讯作者: M. Schmale