The linearity of the Vitros dry-slide method for plasma salicylate was assessed in two ways: serial concentrations of sodium salicylate were added to fresh lithium heparin plasma, and the salicylate was determined both neat and in dilution. Vitros salicylate results submitted to the Heathcontrol External Quality Assessment Scheme were compared to the spike value. Similar loss of linearity was o...

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...

A synthesis of racemie saphenic acid is described. From this acid 9 ester derivatives of saphenamycin were prepared. Those with aromatic acid components showed high activity against many Gram-positive and some Gram-negative bacteria. Of the esters with aliphatic acid moieties only the acetate and, to a lesser extent, the butyrate showed considerable anti-bacterial activities, whereas esters wit...

A series of tris (α-naphthyl) bismuth (V) carboxylates (α-C10H7)3Bi(OCOR)2 where OCOR = p-trifluoromethyl mandelate, pmethoxy mandelate, salicylate, 2pyrazine carboxylate, mandelate have been synthesised and characterised by solid state infrared, H and C NMR spectroscopy, molecular weight and conductance measurements. The newly synthesized derivatives are monomeric in benzene and non ionic in a...

Plants employ hormone-mediated signaling pathways to defend against pathogens and insects. We tested predictions about the relative effect of jasmonate and salicylate pathways and how they mediate interactions between pathogens and herbivores. We employed two pathogens of tomato, Pseudomonas syringae (Pst) and tobacco mosaic virus (TMV), that are known to elicit distinct components of the two p...

OBJECTIVE This study was designed to establish a low dose salicylate-induced tinnitus rat model and to investigate whether central or peripheral auditory system is involved in tinnitus. METHODS Lick suppression ratio (R), lick count and lick latency of conditioned rats in salicylate group (120 mg/kg, intraperitoneally) and saline group were first compared. Bilateral auditory nerves were ablat...

Sodium salicylate is one of the nonsteroidal antiinflammatory drugs and is clinically used for antiinflammation and chronic pain relief. In the present study, we investigated the actions of sodium salicylate on gamma-aminobutyric acid type A receptor (GABA(A)) current in cultured rat spinal dorsal horn neurons. Sodium salicylate was found to reduce GABA(A) current in a reversible and concentrat...

Plasma salicylate concentration was monitored in 42 children on long-term salicylate therapy for rheumatoid arthritis. A given dose of salicylate per kg resulted in large variations in plasma levels, both between individuals and for a single individual at different times. The factors responsible for such variations were studied; in 6 cases urinary metabolites of salicylate were analysed. The re...

Heavily encapsulated Klebsiella pneumoniae (serotypes 1 and 2) was cultured in the presence of sodium salicylate. The addition of salicylate (2 to 30 micrograms/ml) progressively decreased the amount of capsular polysaccharide produced by all strains without significantly inhibiting cell growth. Further addition of salicylate (50 to 200 micrograms/ml) was progressively inhibitory to cell growth...

High doses of salicylate, the anti-inflammatory component of aspirin, induce transient tinnitus and hearing loss. Systemic injection of 250 mg/kg of salicylate, a dose that reliably induces tinnitus in rats, significantly reduced the sound evoked output of the rat cochlea. Paradoxically, salicylate significantly increased the amplitude of the sound-evoked field potential from the auditory corte...