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The role of niacin's metabolite, nicotinamide adenine dinucleotide (NAD), in DNA repair via base-excision repair pathway is well documented. We evaluated if niacin deficiency results in genetic instability in normal human fetal lung fibroblasts (MRC-5), and further, does it leads to enhanced
Assay of N1-MNA was conducted in 96 urine samples using two methodological variants with external and internal N1-MNA standards. Basing on significant fluctuations of the percent of detecting N1-MNA added to urine, the necessity of using the internal standard was proved. A significant (up to 30%)
For many decades there has been adequate information for the elimination of acute dietary deficiency diseases. Scurvy, beri-beri, and pellagra, once serious scourges, are now seen only rarely. The severe forms of protein-energy malnutrition, kwashiorkor and marasmus, have also decreased greatly.
Half and half nails or Lindsay's nails were first mentioned by Bean (1) in 1964 and later described by Lindsay (2) in 1967 in patients with chronic kidney disease. They can occur in various diseases but also in healthy individuals. A 57-year-old patient with no significant pathological personal