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Nitric oxide (NO), a multifaceted bioregulatory agent and an environmental pollutant, can also cause genomic alterations. In vitro, NO deaminated deoxynucleosides, deoxynucleotides, and intact DNA at physiological pH. That similar DNA damage can also occur in vivo was tested by treating Salmonella typhimurium strain TA1535 with three NO-releasing compounds,(More)
Two raters performed hand-held dynamometer testing of six muscle groups of 30 patients to determine the interrater reliability of the procedure. The six muscle groups tested were the shoulder external rotators, elbow flexors, wrist extensors, hip flexors, knee extensors, and ankle dorsiflexors. The patients were of eight different diagnostic groups, with(More)
The photoreceptors of the horseshoe crab Limulus polyphemus are classical preparations for studies of the photoresponse and its modulation by circadian clocks. An extensive literature details their physiology and ultrastructure, but relatively little is known about their biochemical organization largely because of a lack of antibodies specific for Limulus(More)
Twenty-four patients with stroke were studied (a) to determine the interrater reliability of a clinical measurement of shoulder subluxation, (b) to confirm the interrater reliability of the Ritchie Articular Index (Bohannon & LeFort, 1986) for measuring shoulder pain, (c) to establish the relationship between the Ritchie index scores and shoulder lateral(More)
Histamine has been proposed as a photoreceptor neurotransmitter in two major groups of arthropods, the insects and the crustacea. In this study biochemical and immunocytochemical approaches were used to examine the synthesis, endogenous content, and cellular distribution of histamine in the visual system of the horseshoe crab Limulus polyphemus, an ancient(More)
In rhabdomeral photoreceptors, light stimulates the phosphorylation of arrestin, a protein critical for quenching the photoresponse, by activating a calcium/calmodulin-dependent protein kinase (CaM PK). Here we present biochemical evidence that a CaM PK that phosphorylates arrestin in Limulus eyes is structurally similar to mammalian CaM PK II. In addition,(More)
BACKGROUND AND PURPOSE The extent of a patient's impairment can be established by comparing measurements of that patient's performance with normative values obtained from apparently unimpaired individuals. Only a few studies have described normative values for muscle strength measured by hand-held dynamometry. The purpose of this study of older adults,(More)
The purpose of this investigation was to determine in 17 stroke patients the correlation between two independent variables (knee extensor muscle torque [KET] and spasticity on the paretic side) and one dependent variable (gait speed). The patients had a mean age of 59 years; time since onset of first stroke was 51 days. Each variable was measured twice on(More)
The purposes of this investigation of patients with stroke were to 1) determine and compare shoulder lateral rotation range of motion (SLRROM) measured at the threshold of pain on the paretic and nonparetic sides; 2) establish the intrarater and interrater reliability of the measurements; and 3) determine the relationship between SLRROM measurements and the(More)