Radhika Sanduja

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Prostaglandin H (PGH) synthase (EC is a key enzyme in the biosynthesis of prostaglandins, thromboxane, and prostacyclin. In cultured human umbilical vein endothelial cells, interleukin 1 (IL-1) is known to induce the synthesis of this enzyme, thereby raising the level of PGH synthase protein severalfold over the basal level. Pretreatment with(More)
To elucidate the differentiation-associated expression of enzymes catalyzing arachidonic acid metabolism, we measured arachidonate metabolites by reverse-phase high pressure liquid chromatography in monocytoid leukemia (ML-1, THP-1, and U937) and myeloid leukemia (KG-1) cell lines. Undifferentiated ML-1 or THP-1 cells produced trace amounts of eicosanoids(More)
3-Hydroxypropylmercapturic acid [3-OHPrMCA, S-(3-hydroxypropyl)-N-acetyl-L-cysteine] was quantitatively measured by high-performance liquid chromatography (HPLC) in the urine of rats given allylamine.HCl (5, 25, 50, 100 and 150 mg kg-1), acrolein (13 mg kg-1), allylalcohol (64 mg kg-1), allylchloride (76 mg kg-1), allylbromide (120 mg kg-1), allylcyanide(More)
Although it has long been thought that environmental toxins may play an underlying role in vascular diseases such as atherosclerosis, this concept is not supported by any clear-cut experimental evidence of toxic metabolism by cardiovascular enzymes. In this study, we demonstrate that allylamine, a selective cardiovascular toxin in vivo, is actively(More)
Previous evidence from this laboratory demonstrated that allylamine, a known cardiovascular toxin, is metabolized in vitro to acrolein, which has been hypothesized to act as a distal toxin. In this study, 3-hydroxypropylmercapturic acid was isolated and identified by MS, NMR, and 2D-NMR spectroscopy as the sole urinary metabolite of allylamine metabolism in(More)
Z. Naturforsch. 37 b, 521-523 (1982); received October 8, 1981 Trigonella foenumgraecum, Leguminoseae, Coumarin A new coumarin, named trigocoumarin has been isolated from Trigonella foenumgraecum along with some known compounds. Based upon its spectral (IR, UV, NMR and MS) and analytical data, trigocoumarin has been assigned the structure:(More)
Marine mollusks have been identified as a rich source of novel compounds. The diversity of the chemical nature of these compounds can be partially attributed to the dietary sources inasmuch as mollusks are known to concentrate selectively compounds present in their diet. Although cembranolide diterpenses have been isolated in ever-growing numbers from a(More)