Median nerve blocks were performed in 10 volunteers in a randomized, double-blind, crossover study to compare the effects of 1% plain lidocaine with 1% lidocaine in sodium bicarbonate 0.1 mmol litre-1. Sensations of hot, cold, pinprick and light touch, compound motor and sensory nerve action potentials, and skin temperature were assessed at 2-min intervals. pH was 6.4 +/- 0.1 for plain lidocain...

This work aimed to obtain thermoplastic starch composites (TPS) derived from and fibers of babassu coconut. The was prepared with 40% plasticizer (glycerol). underwent chemical treatment alkalinization bleaching. SEM images infrared spectra showed that wax, lignin, hemicellulose were removed the fiber surface. TPS a smooth uniform surface, whereas TPSWF composite (washed fiber) voids between TP...

Four identification tests, proposed in addition to conventional methods, were evaluated with 320 fermentative nonlipophilic Corynebacterium strains: growth at 20 degrees C, glucose fermentation at 42 degrees C, alkalinization of sodium formate, and acid production from ethylene glycol. These tests were highly discriminant. Corynebacterium amycolatum displayed a unique profile, allowing it to be...

Changes in intracellular pH (pHi) can produce marked effects on cardiac function, and, therefore, it is important that the cell possess mechanisms by which pHi is regulated, especially after intracellular acidosis associated with myocardial ischemia. The Na/H exchanger (NHE) and the Na/HCO3 symport represent the 2 major pathways by which alkalinization occurs in cardiac cells. The NHE not only ...

Two cases of acute leukaemia of Burkitt type in whom chemotherapy was associated with the 'tumour overkill syndrome' are described. One patient died with severe metabolic derangement which followed chemotherapy. In the other, an intensive programme of allopurinol administration, alkalinization of the urine and forced diuresis was instituted before chemotherapy, thus correcting the initial bioch...

Motile and glucose-negative nonfermentative bacilli are difficult to identify by commonly used procedures. We found eight features (reduction of nitrate and nitrite, acidification of fructose, and alkalinization of acetamide, arginine, histidine, saccharate, and urea) that identified 83% of 143 strains. These, along with additional biochemical tests, effected identification of 93% of the strain...