We investigated which of the major actions of local anesthetics (i.e., inhibition of phospholipase A2, interaction with Ca++ channels or blockade of receptor) was responsible for the inhibition of acetylcholine-induced desensitization in guinea pig ileal longitudinal muscle. Desensitization was inhibited by amine local anesthetics and related compounds in the order of potency quinacrine > chlor...

Pool A is a rapidly exchangeable cellular pool of Ca whose release is triggered by a mechanism involving extracellular Ca (Hunter et al., 1981). We have now found that pool A is rapidly released from the perfused rat heart when 10 mM caffeine is added to the perfusate. Pool A release by caffeine was demonstrated during a Ca free perfusion. When the perfusate contained 2.5 mM Ca, caffeine induce...

A survey of Oxfordshire dentists showed that most practise prophlaxis of bacterial endocarditis, but that few follow currently recommended regimens. for example, prophylactic antibiotics are started one or more days before the procedure by 72 per cent of dentists, and two or more days before by 25 per cent. Eight-seven per cent administer antibiotics for a total of four or more days. Penicillin...

The efficacy of three penicillin regimens in treating uncomplicated gonorrhoea in men was evaluated. The regimens consisted of: Augmentin 3.25 g plus probenecid 1 g orally: aqueous procaine penicillin G 4.5 MIU intramuscularly and probenecid 1 g plus one tablet of Augmentin 375 mg orally; or aqueous procaine penicillin G 4.5 MIU intramuscularly and probenecid 1 g plus two tablets of Augmentin 3...

Successful treatment of gonorrhoea with cotri-moxazole* has now been reported by several workers who gave one tablet four times a day for 5 days, observed a failure rate of 38 per cent. of the 86 men followed. They claimed that in 45 per cent. of the failures a carrier state resulted which was detected by routine examination of Gram-stained smears in all cases after treatment; cultures were not...