Zobrazeno 1 - 10
of 12
pro vyhledávání: '"R. J. Barsotti"'
Publikováno v:
MRS Proceedings. 737
Laser ablation has been used to grow silicon nanowires with an average diameter of 6.7 nm ± 2.7 nm surrounded by an amorphous SiOx sheath of 1–2 nm. This paper reports the imaging, chemical and structural analysis of these wires. Due to the growth
Publikováno v:
The American journal of physiology. 270(3 Pt 2)
We assessed the sensitivity of phospholipase D (PLD) activity in vascular smooth muscle to cytosolic Ca2+ by increasing cytosolic Ca2+ levels independently of agonist stimulation. When rat tail artery was preloaded with the Ca2+ indicator fluo 3 pent
Autor:
J. P. Smith, R. J. Barsotti
Publikováno v:
The American journal of physiology. 265(5 Pt 1)
We have developed a computer-based servo system for controlling isotonic releases in muscle. This system is a composite of commercially available devices: an IBM personal computer, an analog-to-digital (A/D) board, an Akers AE801 force transducer, an
Autor:
T D, Lenart, T S, Allen, R J, Barsotti, G C, Ellis-Davies, J H, Kaplan, C, Franzini-Armstrong, Y E, Goldman
Publikováno v:
Advances in experimental medicine and biology. 332
Cross-bridge structure and mechanics were studied during development of skinned frog muscle fiber contractions initiated by photolysis of DM-nitrophen (a caged Ca2+). Stiffness rises earlier than tension following photo-release of Ca2+. A similar lea
Publikováno v:
The American journal of physiology. 261(1 Pt 1)
We examined the correlation between agonist-stimulated increases in inositol phosphates and force development in vascular smooth muscle. Segments of rat tail artery were preincubated with [3H]inositol and treated with norepinephrine (10(-5) M) for 3-
Autor:
R J Barsotti, Michael A. Ferenczi
Publikováno v:
Journal of Biological Chemistry. 263:16750-16756
The kinetics of ATP hydrolysis and tension responses were studied simultaneously in a permeabilized preparation of cardiac tissue of the guinea pig. This was achieved by combining laserflash photolysis of P3-1-(2-nitrophenyl)ethyladenosine 5'-triphos
Autor:
Johann Caspar Rüegg, Richard J. Paul, K. Güth, R. J. Barsotti, S. Boström, D. Hartshorne, U. Mrwa
Publikováno v:
Experientia. 41:1002-1006
The contraction induced by a Ca2+-independent myosin light chain kinase (MLCK-) was characterized in terms of isometric force (Fo), immediate elastic recoil (SE), unloaded shortening velocity (Vus), shortening under a constant load and ATPase activit
Autor:
R. J. Barsotti, J. A. Spath
Publikováno v:
The American journal of physiology. 242(1)
Regional myocardial blood flow or myocardial creatine kinase activity and ultrastructure was studied in anesthetized cats subjected to sham operation, 5 h of circumflex-artery ligation, or 2 h of coronary-artery ligation with 3 h of reperfusion. Sham
Publikováno v:
The American journal of physiology. 252(5 Pt 1)
Isometric tension, unloaded shortening velocity (Vus), and myosin light chain phosphorylation were measured with skinned chicken gizzard fibers at various Ca2+ concentrations and at two concentrations of free Mg2+, 0.7 and 2.2 mM. At low free Mg2+, a
Publikováno v:
Biochemistry. 23(21)
The contractile system of smooth muscle exhibits distinctive responses to varying Mg2+ concentrations in that maximum adenosine-5'-triphosphatase (ATPase) activity of actomyosin requires relatively high concentrations of Mg2+ and also that tension in