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Plasma lipid peroxidation, activity of erythrocyte superoxide dismutase (SOD) and catalase, and serum antioxidant activity (AOA) in uremic patients were examined before and after hemodialysis. An increased level of lipid peroxidation, a decreased serum AOA level, and elevated SOD and normal catalase activity before hemodialysis were observed in uremic(More)
Analyses of beat-to-beat interval variations on a continuous electrocardiogram and cardiovascular reaction during deep breathing and handgrip exercise were used as a test for autonomic nervous function in 35 obese and 18 control women. Reduced heart rate variability (HRV) in obesity indicates depression in parasympathetic activity. Indices of HRV were(More)
Combining results on quadrics in projective geometries with an algebraic interplay between finite fields and Galois rings, we construct the first known family of partial difference sets with negative Latin square type parameters in nonelementary abelian groups, the groups Z 2k 4 × Z 4−4k 2 for all k when is odd and for all k < when is even. Similarly, we(More)
OBJECTIVE To determine basal levels of cytosolic calcium ([Ca2+]i) and phagocytic activity in polymorphonuclear leukocytes (PMNLs) from patients with non-insulin-dependent diabetes (NIDDM). DESIGN Prospective cohort study. SETTING A university-county hospital. MEASUREMENTS Cytosolic calcium levels, adenosine triphosphate (ATP) content, and(More)
Post-heparin hepatic lipase activity is reduced in chronic renal failure (CRF). This could be due to reduced synthesis, decreased activity, and/or impaired secretion of the enzyme. Further, the factor(s) responsible for such derangements are not elucidated. We examined hepatic lipase metabolism in normal, 6-wk-old CRF rats, CRF-PTX (parathyroidectomized)(More)
Let (G;) be a permutation group of degree n. Let V (G;) be the set of all square matrices of order n which commute with all permutation matrices corresponding to permutations from (G;): V (G;) is a matrix algebra which is called the centralizer algebra of (G;): In this paper we introduce the combinatorial analogue of centralizer algebras, namely coherent(More)
This paper deals with graph invariants and stabilization procedures. We consider colored graphs and their automorphisms and we discuss the isomorphism problem for such graphs. Various global and local isomorphism invariants are introduced. We study canonical num-berings, invariant partitions, stable and equitable partitions and algorithms for stabilizing(More)
Available data indicate that the liver is a target organ for parathyroid hormone (PTH) and that this effect is most likely mediated by PTH-induced calcium entry into hepatocytes. The present study examined the effects of both PTH-(1-84) and its amino-terminal fragment [PTH-(1-34)] on cytosolic calcium concentration ([Ca2+]i) of hepatocytes and explored the(More)