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R J Barsotti

Explore the profile of R J Barsotti including associated specialties, affiliations and a list of published articles. Areas
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Articles 21
Citations 303
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Recent Articles
1.
Regnier M, Martin H, Barsotti R, Rivera A, Martyn D, Clemmens E
Biophys J . 2004 Sep; 87(3):1815-24. PMID: 15345560
In striated muscle thin filament activation is initiated by Ca(2+) binding to troponin C and augmented by strong myosin binding to actin (cross-bridge formation). Several lines of evidence have led...
2.
Barsotti R
J Pediatr . 2001 Jan; 138(1 Suppl):S11-9;discussion S19-20. PMID: 11148545
The measurement of ammonia, now known to be a normal constituent of all body fluids, is fraught with problems. An elevated ammonia level in blood (100 micromol/L or higher) is...
3.
Spencer C, Barsotti R, Berlin J
J Mol Cell Cardiol . 2000 Jun; 32(7):1285-300. PMID: 10860770
Previous work suggests that strontium ions (Sr(2+)) are less effective than calcium ions (Ca(2+)) at supporting excitation-contraction (EC) coupling in cardiac muscle. We therefore tested whether this was due to...
4.
Dantzig J, Barsotti R, Manz S, Sweeney H, Goldman Y
Biophys J . 1999 Jul; 77(1):386-97. PMID: 10388765
When smooth muscle myosin subfragment 1 (S1) is bound to actin filaments in vitro, the light chain domain tilts upon release of MgADP, producing a approximately 3.5-nm axial motion of...
5.
Barsotti R, Dantzig J, Goldman Y
Nat Struct Biol . 1996 Sep; 3(9):737-9. PMID: 8784343
No abstract available.
6.
LaBelle E, Fulbright R, Barsotti R, Gu H, Polyak E
Am J Physiol . 1996 Mar; 270(3 Pt 2):H1031-7. PMID: 8780200
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...
7.
Kaplan J, Barsotti R
Biophys J . 1996 Feb; 70(2):1006-16. PMID: 8789118
Nitrophenyl-EGTA and DM-nitrophen are Ca2+ cages that release Ca2+ when cleaved upon illumination with near-ultraviolet light. Laser photolysis of nitrophenyl-EGTA produced transient intermediates that decayed biexponentially with rates of 500,000...
8.
Martin H, Barsotti R
Biophys J . 1994 Nov; 67(5):1933-41. PMID: 7858130
The kinetics of force production in chemically skinned trabeculae from the guinea pig were studied by laser photolysis of caged ATP in the presence of Ca2+. Preincubation of the tissue...
9.
Martin H, Barsotti R
Biophys J . 1994 Apr; 66(4):1115-28. PMID: 8038383
The kinetics of ATP-induced rigor cross-bridge detachment were studied by initiating relaxation in chemically skinned trabeculae of the guinea pig heart using photolytic release of ATP in the absence of...
10.
Smith J, Barsotti R
Am J Physiol . 1993 Nov; 265(5 Pt 1):C1424-32. PMID: 8238490
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,...