Protease-deficient Lon was expressed and served as the bait in trapping approach to capture the interacting partners in H. pylori. The antibiotic susceptibility of wild-type and lon derivative mutants was determined by the E test trips and the disc diffusion assay. The effect of HpLon on RdxA activity was detected the change in NADPH oxidation and metronidazole reduction by spectrophotometer.
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We describe a child with this disorder and review our experience and the literature.
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Parry-Romberg syndrome is an acquired slowly progressive disease characterized by an atrophy mostly involving half of the face. The pathogenesis of this disfiguring condition is still controversial. The relationship between Parry-Romberg syndrome and Lyme disease needs to be considered in depth. A 16-year-old woman from Albania presented with linear depressions of the right side of the face, clinically compatible with Parry-Romberg syndrome. She had a positive history of Lyme disease. Borrelia infection was confirmed by the positivity of PCR and the presence of IgM antibodies. The patient received intravenous penicillin and metronidazole for 14 days. After treatment and during a 2-year follow-up, the clinical disease progression was halted and the serological and microbiological tests for Borrelia burgdorferi sensu lato were negative. We cannot exclude a coincidence, however, of the bacteriological and serological evidence. Moreover, the interruption of the disease progression after the antibiotic therapy is difficult to ignore without claiming that this association is at least suggestive.
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Many antibiotics and other chemotherapeutic agents have been used as adjuncts to mechanical periodontal therapy with mixed results. This article reviews the clinical and microbial results obtained after the systemic administration of tetracyclines, penicillins, clindamycin, and metronidazole, as well as the combination of metronidazole and Augmentin as adjuncts to conventional periodontal treatment. The major adverse effects associated with each of these antibiotics are given, as well as the potential for the emergence of antibiotic resistance in the periodontal flora. Recently, the introduction of a new generation of controlled-release, locally applied antimicrobial agents provides the clinician with the opportunity to treat individual periodontal sites with high concentrations of medication. The clinical effects obtained from multicenter clinical trials with PerioChip, which contains chlorhexidine, and with Atridox, which contains doxycycline, are summarized. Finally, suggestions are given both for the selection of an antimicrobial agent and for minimizing the development of antibiotic resistance in the periodontal flora.
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All the tested isolates were found resistant to metronidazole, while 65% were resistant to amoxycillin and 4.7% were resistant to clarithromycin. However, none of the isolates were found to be resistant to tetracycline. Molecular fingerprinting and cluster analysis of resistant and sensitive strains did not give clues for clonal spread of resistant strains.
To investigate the advantages of long-term vaginal administration of Lactobacillus rhamnosus after oral treatment with metronidazole to prevent the recurrence of bacterial vaginosis (BV).
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There was significant difference in wound healing status (F value = 6.523; Critical Difference =14.03, P>0.05) from day 10 and pain reduction also (F value = 6.638 and Critical Difference = 1.667, P>0.05) from day 7 in study arm.