Maintenance of contractile force of the hind limb muscles by the somato-lumbar sympathetic reflexes.
Maintenance of contractile force of the hind limb muscles by the somato-lumbar sympathetic reflexes.
复制标题
通过躯体-腰交感神经反射维持后肢肌肉的收缩力。
DOI：
10.1186/s12576-021-00799-w
复制
发表时间：
2021-05-21
影响因子：
2.3
通讯作者：
Shigemoto, Kazuhiro
中科院分区：
文献类型：
--
作者：
Hotta, Harumi;Iimura, Kaori;Watanabe, Nobuhiro;Shigemoto, Kazuhiro
关键词：
本研究旨在阐明骨骼肌收缩引起的肌交感神经反射兴奋是否调节其收缩能力。在麻醉大鼠，电刺激完整的胫神经在切断腰交感神经干、脊髓或背根前后诱发小腿三头肌等长强直性收缩。切断LST、脊髓或背根后20min，强直力(Tf)的幅度降低约10%。从腰椎灰质支记录的节后交感神经活动显示，脊髓和棘上反射都是对收缩的反应而引起的。重复电刺激切断的LST外周端，可增加Tf波幅。我们的结果表明，骨骼肌收缩引起的脊髓和棘上躯体交感神经反射有助于维持其自身的收缩力量。网上版载有补充材料，可在10.1186/s12576-021-00799-w查阅。
This study aimed to clarify whether the reflex excitation of muscle sympathetic nerves induced by contractions of the skeletal muscles modulates their contractility. In anesthetized rats, isometric tetanic contractions of the triceps surae muscles were induced by electrical stimulation of the intact tibial nerve before and after transection of the lumbar sympathetic trunk (LST), spinal cord, or dorsal roots. The amplitude of the tetanic force (TF) was reduced by approximately 10% at 20 min after transection of the LST, spinal cord, or dorsal roots. The recorded postganglionic sympathetic nerve activity from the lumbar gray ramus revealed that both spinal and supraspinal reflexes were induced in response to the contractions. Repetitive electrical stimulation of the cut peripheral end of the LST increased the TF amplitude. Our results indicated that the spinal and supraspinal somato-sympathetic nerve reflexes induced by contractions of the skeletal muscles contribute to the maintenance of their own contractile force. The online version contains supplementary material available at 10.1186/s12576-021-00799-w.
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影响因子：
5.5
作者：
DAMPNEY, RAL;MCALLEN, RM
通讯作者：
MCALLEN, RM
DOI：
10.1152/ajpheart.1996.271.1.h38
发表时间：
1996-07-01
影响因子：
4.8
作者：
Hill, JM;Adreani, CM;Kaufman, MP
通讯作者：
Kaufman, MP
影响因子：
2.9
作者：
ISA T;KUROSAWA M;SWENSON R S
通讯作者：
SWENSON R S
影响因子：
3.3
作者：
IWAMOTO, GA;WALDROP, TG;MITCHELL, JH
通讯作者：
MITCHELL, JH
DOI：
10.1152/ajpregu.00633.2006
发表时间：
2007-04-01
影响因子：
2.8
作者：
Lee, T-K.;Lois, J. H.;Yates, B. J.
通讯作者：
Yates, B. J.