The NAD+-specific isocitrate dehydrogenase from pea stems is shown to respond to the mole fraction of NADH when total NAD (NAD+ plus NADH) is kept constant. Fifty per cent inhibition occurs when the mole fraction of NADH is 0.1. In this region the enzyme is extremely sensitive to NADH concentration and it is suggested that this acts in a similar manner to energy charge in other systems. In an a...

background: assessment of myocardial function is essential in heart disease, but in regard to systolic and diastolic functions such evaluation has limitation. ejection fraction is difficult to assess in abnormally-shaped ventricles, and diastolic inflow velocity pattern may be fused because of tachycardia.   objective: a myocardial performance index (mpi) or tei index has been developed for adu...

The "70S-associated" 4S RNA from avian myeloblastosis virus contains transfer RNA, as determined by aminoacylation. The various amino acids esterified, plus the great number of minor bases found in this "70S-associated" 4S RNA indicate that a sizeable fraction, but not all, of this RNA is transfer RNA.

We review the measured properties of the r lepton and its neutrino. A constrained fit to the world data gives a 1: branching fraction to an electron plus neutrinos (Be) of (17.4 + 2.1)% and BII/Be = 1.07 + 0.17. New data on the T -t ITV mode are in agreement with the expected branching fraction. There is evidence for the T + Alv mode, but the Al resonance cannot be conclusively established from...

Using Monte Carlo methods to simulate the inverse Compton scattering of soft photons, we model the spectrum of the Galactic black hole candidate Cyg X-1, which shows evidence of a nonthermal tail extending beyond a few hundred keV. We assume an ad hoc sphere of leptons, whose energy distribution consists of a Maxwellian plus a high energy power-law tail, and inject 0.5 keV blackbody photons. Th...

objective: parkia biglobossa stem bark decoction is a popular medicinal plant preparation used as calming agent for tensed patients in traditional medicine. the aim of this study was to evaluate the effects of aqueous stem bark extract of parkia biglobossa (aepb) and its active fraction aepbf3 on anxiety, spontaneous alternation behavior, and locomotor activity. the open field apparatus was use...

A method has been developed whereby a fraction of rat brain mitochondria (synaptic mitochondria) was isolated from synaptosomes. This brain mitochondrial fraction was compared with the fraction of "free" brain mitochondria (non-synaptic) isolated by the method of Clark & Nicklas (1970). (J. Biol. Chem. 245, 4724-4731). Both mitochondrial fractions are shown to be relatively pure, metabolically ...

conclusions our study showed that the triple therapy of nd: yag and nd: yag + co2 fractional and hydroquinone cream had high efficiency and low morbidity compared to twofold treatment with nd: yag and nd: yag + co2 fractional. results seventeen patients with melasma (14 females and three males) with mean (± sd) age of 38.47 (± 6.29) years (range 29 - 53) were included in this study. the only si...

Phosphatidylserine synthase is found predominantly in the microsomal fraction, and phosphatidylserine decarboxylase is found predominantly in the mitochondrial fraction of baby hamster kidney (BHK-21) cells. This segregation of enzymes of phosphatidylserine metabolism allows serine metabolism to phosphatidylserine and phosphatidylethanolamine to be used as an indicator of the intracellular move...