The influence of single oral dose of anti-inflammatory, antipyretic and analgesic agents on urinary enzymes was investigated in rats as a indicator of nephrotoxic effect. Urinary LDH activity was significantly elevated by aspirin, ketophenylbutazone, aminopyrine, phenacetin and acetaminophen. These drugs increased also H/M ratio of LDH isoenzymes. Although other test drugs have no effect on LDH...

Penidiamide, a new tripetide containing dehydrotryptamine, glycine and anthranilic acid linked together by two amide bonds, and oxindole were isolated from submerged cultures of Penicillium sp. 62-92. Both compounds preferentially inhibited human synovial phospholipase A2, penidiamide with an IC50 of 30 microM and oxindole of 380 microM. With the exception of U 937 cells (leukemia, human), no c...

Six compounds were isolated as radical scavengers from the culture broth of a marine-derived actinomycete strain USF-TC31. The structures of two novel compounds were determined to be those of N-carbamoyl-2,3-dihydroxybenzamide (5) and 2-acetamido-3-(2,3-dihydroxybenzoylthio)propanoic acid (6), and four known compounds were identified to be anthranilic acid (1), 2,3-dihydroxybenzoic acid (2), 2,...

The endeavor of this study was to design, synthesize and investigate the in vivo anti-inflammatory and analgesic activity of some novel 2-(2-(benzo[d]oxazol-2-yl) phenylamino)-N-(substituted phenyl) acetamide (2A-2F) derivatives. 2-(2-aminophenyl) benzoxazole (D1) was synthesized by the condensation of anthranilic acid with starting material 2-aminophenol in the existence of poly phosphoric aci...

Previous studies from this laboratory have shown that a majority of patients with rheumatoid arthritis excrete abnormally high amounts of 3-hydroxyanthranilic acid and kynurenine (Bett, 1962a, b). A more striking finding was the rise in kynurenine output after tryptophan loading in rheumatoid arthritis. Administration of large doses of pyridoxine over a short period caused a temporary fall in k...