交叉循环犬心脏的X射线衍射研究。
An X-ray diffraction study of the cross-circulated canine heart.
作者信息
Matsubara I, Suga H, Yagi N
出版信息
J Physiol. 1977 Sep;270(2):311-20. doi: 10.1113/jphysiol.1977.sp011954.
Abstract
- The equatorial X-ray diffraction pattern was recorded from a papillary muscle of a cross-circulated canine heart at different phases of the cardiac cycle. The intensity ratio of the 1, 0 and the 1, 1 reflexions (I1, o/I1,1) was 0-79 in the systolic phase and 1-19 in the diastolic phase. 2. Using the intensity ratio obtained, the approximate proportion of the myosin projections present in the vicinity of the thin filaments was calculated. This was 70-71% in the systolic phase and 51-52% in the diastolic phase of the total myosin projections. 3. The peak systolic tension was roughly proportional to the proportion of the projections present in the vicinity of the thin filaments during systole. 4. The projections which stayed in the vicinity of the thin filaments during diastole did not produce significant contractile force.
摘要
- 在心脏周期的不同阶段，从交叉循环犬心脏的乳头肌记录赤道X射线衍射图。收缩期1,0和1,1反射的强度比（I1,0/I1,1）为0.79，舒张期为1.19。2. 利用获得的强度比，计算了细肌丝附近存在的肌球蛋白突起的近似比例。在总肌球蛋白突起中，收缩期为70%-71%，舒张期为51%-52%。3. 收缩期峰值张力大致与收缩期细肌丝附近存在的突起比例成正比。4. 舒张期留在细肌丝附近的突起不会产生显著的收缩力。
相似文献
1
An X-ray diffraction study of the cross-circulated canine heart.交叉循环犬心脏的X射线衍射研究。
J Physiol. 1977 Sep;270(2):311-20. doi: 10.1113/jphysiol.1977.sp011954.
2
The states of myosin heads in heart muscle during systolic and diastolic phases.心肌在收缩期和舒张期肌球蛋白头部的状态。
Eur Heart J. 1980;Suppl A:17-20. doi: 10.1093/eurheartj/1.suppl_1.17.
3
The state of cardiac contractile proteins during the diastolic phase.舒张期心脏收缩蛋白的状态。
Jpn Circ J. 1982 Jan;46(1):44-8. doi: 10.1253/jcj.46.44.
4
Radial mass transfer of cross-bridges in a tetanized ferret heart muscle.强直刺激的雪貂心肌中横桥的径向质量转移
Pflugers Arch. 2002 May;444(1-2):38-42. doi: 10.1007/s00424-002-0790-4. Epub 2002 Feb 7.
5
A time-resolved X-ray diffraction study of muscle during twitch.肌肉抽搐过程的时间分辨X射线衍射研究。
J Physiol. 1978 May;278:297-307. doi: 10.1113/jphysiol.1978.sp012305.
6
Sarcomere-length dependence of lattice volume and radial mass transfer of myosin cross-bridges in rat papillary muscle.大鼠乳头肌中肌节长度对晶格体积和肌球蛋白横桥径向质量传递的依赖性
Pflugers Arch. 2004 May;448(2):153-60. doi: 10.1007/s00424-004-1243-z. Epub 2004 Feb 6.
7
An X-Ray diffraction study on mouse cardiac cross-bridge function in vivo: effects of adrenergic {beta}-stimulation.小鼠心脏体内横桥功能的X射线衍射研究：肾上腺素能β刺激的影响
Biophys J. 2006 Mar 1;90(5):1723-8. doi: 10.1529/biophysj.105.074062. Epub 2005 Dec 9.
8
X-ray diffraction evidence for the extensibility of actin and myosin filaments during muscle contraction.X射线衍射证据表明，在肌肉收缩过程中肌动蛋白丝和肌球蛋白丝具有可伸展性。
Biophys J. 1994 Dec;67(6):2422-35. doi: 10.1016/S0006-3495(94)80729-5.
9
X-ray diffraction study of contracting heart muscle.收缩期心肌的X射线衍射研究。
J Mol Biol. 1977 Apr;111(2):121-8. doi: 10.1016/s0022-2836(77)80118-6.
10
Movement of myosin heads during a heart beat.心跳过程中肌球蛋白头部的运动。
Nature. 1979 Mar 29;278(5703):474-6. doi: 10.1038/278474a0.
引用本文的文献
1
Myosin in autoinhibited state(s), stabilized by mavacamten, can be recruited in response to inotropic interventions.在变构抑制状态下的肌球蛋白（myosin），通过马西替坦（mavacamten）稳定，可被募集以响应正性肌力干预。
Proc Natl Acad Sci U S A. 2024 Feb 20;121(8):e2314914121. doi: 10.1073/pnas.2314914121. Epub 2024 Feb 12.
2
Myosin heads are displaced from actin filaments in the in situ beating rat heart in early diabetes.在早期糖尿病的在位跳动大鼠心脏中，肌球蛋白头部从肌动蛋白丝上位移。
Biophys J. 2013 Mar 5;104(5):1065-72. doi: 10.1016/j.bpj.2013.01.037.
3
Effects of sustained length-dependent activation on in situ cross-bridge dynamics in rat hearts.持续长度依赖性激活对大鼠心脏原位横桥动力学的影响。
Biophys J. 2007 Dec 15;93(12):4319-29. doi: 10.1529/biophysj.107.111740. Epub 2007 Aug 31.
4
Theoretical treatment of striated muscle: Dynamic extension of four-state model.横纹肌的理论处理：四态模型的动态扩展
Heart Vessels. 1996;11(1):44-53. doi: 10.1007/BF01744599.
5
Cross-bridge movement in rat cardiac muscle as a function of calcium concentration.大鼠心肌中横桥运动与钙浓度的关系。
J Physiol. 1989 Oct;417:555-65. doi: 10.1113/jphysiol.1989.sp017818.
本文引用的文献
1
A SMALL-ANGLE OPTICALLY FOCUSING X-RAY DIFFRACTION CAMERA IN BIOLOGICAL RESEARCH. I.生物研究中的一种小角度光学聚焦X射线衍射相机。I.
J Ultrastruct Res. 1963 Aug;49:166-70. doi: 10.1016/s0022-5320(63)80044-1.
2
X-ray analysis and the problem of muscle.X射线分析与肌肉问题。
Proc R Soc Lond B Biol Sci. 1953 Mar 11;141(902):59-62. doi: 10.1098/rspb.1953.0017.
3
Structural difference between resting and rigor muscle; evidence from intensity changes in the lowangle equatorial x-ray diagram.静息肌肉与僵直肌肉之间的结构差异；来自低角度赤道X射线图强度变化的证据。
J Mol Biol. 1968 Nov 14;37(3):507-20. doi: 10.1016/0022-2836(68)90118-6.
4
The low-angle x-ray diagram of vertebrate striated muscle and its behaviour during contraction and rigor.脊椎动物横纹肌的低角度X射线图及其在收缩和强直过程中的表现。
J Mol Biol. 1967 Dec 14;30(2):383-434. doi: 10.1016/s0022-2836(67)80046-9.
5
Instantaneous pressure-volume relationships and their ratio in the excised, supported canine left ventricle.离体、有支撑的犬左心室的瞬时压力-容积关系及其比值
Circ Res. 1974 Jul;35(1):117-26. doi: 10.1161/01.res.35.1.117.
6
X-ray diffraction patterns from mammalian heart muscle.
J Mol Biol. 1974 Feb 5;82(4):527-36. doi: 10.1016/0022-2836(74)90246-0.
7
X-ray evidence for radial cross-bridge movement and for the sliding filament model in actively contracting skeletal muscle.在主动收缩的骨骼肌中，关于桡侧横桥运动和肌丝滑行模型的X射线证据。
J Mol Biol. 1973 Jul 15;77(4):549-68. doi: 10.1016/0022-2836(73)90222-2.
8
In situ papillary muscle preparation and some basic contractile properties.原位乳头肌制备及一些基本收缩特性。
Jpn J Physiol. 1975;25(5):659-64. doi: 10.2170/jjphysiol.25.659.
9
Myocardial sarcomere dynamics during isometric contraction.等长收缩期间的心肌肌节动力学
J Physiol. 1975 Oct;251(3):627-43. doi: 10.1113/jphysiol.1975.sp011112.
10
Sarcomere length-tension relations in living rat papillary muscle.
Circ Res. 1975 Sep;37(3):299-308. doi: 10.1161/01.res.37.3.299.
Zotero 插件