The stability and reproducibility of this model clearly demonstrated the concept of a 'clinic modelling randomised trial' as a useful tool. Antibiotic prophylaxis influences the organism's capability to cope with intraoperative bleeding and fluid resuscitation problems. Indeed antibiotic prophylaxis may be beneficial. These effects of antibiotics could only be demonstrated in complex surgical models. Thus new antibiotics should be investigated in complex animal models prior to prospective randomised clinical trials or usage in clinical practice.
Evidence is presented that learned safety increases the rat's willingness to drink ethanol: induction of tolerance to ethanol following learned safety training produces a further increase. Rats with chronically implanted intragastric fistulae consumed substantially more (30%) alcohol when aversive post-ingestional effects were minimized by draining stomach contents during drinking than did rats allowed to retain stomach contents. Half the rats from each group were then made tolerant by prolonged forced alcohol intubation. Later testing showed an increase in alcohol consumption by rats receiving learned safety training or rendered tolerant, with the two factors being additive.
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