The objective of this study was to determine the effects of postmortem muscle pH and temperature declines on the actomyosin ATPase activity of muscle fibers expressing different MyHC isoforms. Using a quantitative histochemical procedure to determine ATPase activity, the maximum actomyosin ATPase activity was determined on individual fibers classified by MyHC expression. Samples were collected ...

The effects of a 37-day period of bed rest on myosin heavy chain (MHC) expression on both mRNA and protein level in human skeletal muscle fibers were studied. Muscle biopsies from vastus lateralis muscle were obtained from seven healthy young male subjects before and after the bed-rest period. Combined in situ hybridization, immunocytochemistry, and ATPase histochemistry analysis of serial sect...

The 14 Minnesota density functionals published between the years 2005 and early 2016 are benchmarked on a comprehensive database of 4986 data points (84 data sets) involving molecules composed of main-group elements. The database includes noncovalent interactions, isomerization energies, thermochemistry, and barrier heights, as well as equilibrium bond lengths and equilibrium binding energies o...

We tested the proposition that muscle cell types have different contents of phosphocreatine (PCr), ATP, and Pi by 31P NMR spectroscopy and HPLC analyses of adult rat and mouse muscles containing various volume fractions of different fiber types. There was a 2-fold difference in the PCr content between muscles with a high volume fraction of fiber types 1 and 2x versus those with fast-twitch (typ...

Rare earth oxyhydrides REOxH(3–2x), with RE = Y, Sc, or Gd and a cationic FCC lattice, are reversibly photochromic in nature. It is known that structural details anion (O2–:H–) composition dictate the efficiency of behavior. The mechanism behind photochromism is, however, not yet understood. In this study, we use 1H, 2H, 17O, 89Y solid-state NMR spectroscopy density functional theory (DFT) calc...

In the quasi-one-dimensional (TMTTF)2X compounds with effectively quarter-filled bands, electronic charge order is stabilized from delicate interplay of Coulomb repulsion and bandwidth. The correlation strength commonly tuned by physical pressure or chemical substitution stoichiometric ratios anions cations. Here, we investigate charge-ordered state through partial in (TMTTF)2[AsF6]1−x[SbF6]x x...

2014 The nuclear spin-lattice relaxation of methyl-protons in (TMTSF)2ClO4 is measured versus temperature between 330 and 40 K. The relaxation from the hyperfine coupling to the itinerant electrons is found to be dominant above 200 K. Similar conclusions apply to (TMTSF)2PF6. At 300 K two regimes of relaxation are identified versus magnetic field : (i) a low-field regime (2-25) kOe where 1/T1 i...

Gex Px S1−2x glasses in the compositional range 0.05 x 0.19 have been synthesized and examined in temperature modulated differential scanning calorimetry (MDSC) and Raman scattering experiments. Trends in the nonreversing enthalpy Hnr(x) near Tg show the term to almost vanish in the 0.090(5) < x < 0.135(5) range, and to increase by an order of magnitude at x < 0.09, and at x > 0.135. In analogy...