1,721,020 research outputs found
Coaggregation between Actinomyces viscousus with streptococcus pyogenes and Streptococcus agalactiae
No full textInterbacterial coaggregation between Actinomyces viscosus indigenous to the human mouth and Stre ptococcus pyogenes and Streptococcus agalactiae was studied. Fifteen of twenty-six strains of Streptococcus pyogenes and thirteen of thirty-one Streptococcus agalactiae showed a coaggregation with Actinomyces viscosus strain. The results show that the coaggregation mechanism required calcium and was dependent on pH. Some coaggregations were inhibited by 0.06 M. lactose and by 1 M. NaCl
The intestinal ecosystem of mice after administration of a polyvalent oral vaccine
No full textBacterial antigens administered, have been showed by many Authors capable to stimulate immunity system, hinding thus the pathogen flora from gut-colonization. Founding on these findings, AA. of the present paper intend to point out by collected microbial data and M.E.S. photos, the activity of an oral polyvalent vaccine made by lysates strains of E.coli, enterococci, staphylococci and P.vulgaris, on normal intestinal flora of mice contemporaneously administered with a pathogenic strain of Salmonella enteritidis. Vaccine showed himself to be able enough to limit alterations of intestinal flora due to infection by the pathogen
Effect of ampicillin and sulbactam/ampicillin on the immunesystem
No full textAn investigation was carried out into the possible effects of ampicillin and a sulbactam/ampicillin combination on the immune system of healthy subjects. The following immunological variables were compared before and after antibiotic therapy: proliferation response of peripheral mononuclear cells to phytohaemagglutinin; variation of T- and B-lymphocytes; dosage of interleukin-2; and production of immunoglobulin A. The data obtained did not demonstrate any immunodepressive activity by either ampicillin or the sulbactam/ampicillin combination
In vitro activity against aerobes and anaerobes of Trospectomycin versus Spectinomycin
No full textThe general antibacterial properties of trospectomycin (TRO) were compared with those of spectinomycin (SPEC) in an in vitro study using a collection of recent clinical isolates: 50 Gram-positive and 25 Gram-negative aerobes and 30 Gram-positive and 15 Gram-negative anaerobes. Minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) were determined for all strains by microtitre using serial dilutions in Mueller-Hinton broth for aerobes and Brucella broth for anaerobes. The final inoculum in each well was 10(5) cfu/ml. This study shows that none of the Gram-negative organisms was sensitive to TRO; the most sensitive were streptococci aerobic strains; TRO exhibited antibiotic activity against all anaerobes tested, which was not seen with SPEC, and also exhibited bactericidal activity. The MICs of Staphylococcus epidermidis and Bacteroides fragilis tested with TRO and SPEC were not significantly affected by the size of bacterial inoculum tested, and the nature of the growth medium did not alter the susceptibility tests
Campylobacter pylori: use of an oral vaccine in prophylaxis of gastric and duodenal colonization
No full textIl ruolo del laboratorio in un curriculum di chimica e fisica per il biennio della scuola secondaria superiore
No full textEpidemiological study of uropathogenic E. coli and antimicrobial interference of ciprofloxacin with piliation
No full textInterferenza della clindamicina sull'infezione cutanea del coniglio dovuti a fili di sutura infettati con S. epidermidis produttore di slime
No full textInterferenza di miocamicina sull'adesivit... e sulla coaggregazione di germi responsabili di parodontopatie.
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