High prevalence and resistance rates to antibiotics in anaerobic bacteria in specimens from patients with chronic balanitisLyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, Bulgaria
Anaerobe 18:414-6. 2012
..Most active agents were metronidazole and amoxicillin/clavulanate. Resistance in anaerobes varies according to sites of specimens and years of study...
- Numerous risk factors for Helicobacter pylori antibiotic resistance revealed by extended anamnesis: a Bulgarian study
Lyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, Sofia, Bulgaria
J Med Microbiol 61:85-93. 2012
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- Role of Helicobacter pylori virulence factors for iron acquisition from gastric epithelial cells of the host and impact on bacterial colonization
Lyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, Bulgaria
Future Microbiol 6:843-6. 2011
..The new activities of the major virulence factors of adherent H. pylori are important both to research and in a clinical setting...
- Benefits of Helicobacter pylori cagE genotyping in addition to cagA genotyping: a Bulgarian study
Lyudmila Boyanova
Chair of Medical Microbiology, Medical University of Sofia, Zdrave Street 2, Sofia, Bulgaria
Antonie Van Leeuwenhoek 100:529-35. 2011
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- Trends in antibiotic resistance in Prevotella species from patients of the University Hospital of Maxillofacial Surgery, Sofia, Bulgaria, in 2003-2009
Lyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
Anaerobe 16:489-92. 2010
..The evolution of penicillin resistance in Prevotella strains was highly dynamic...
- Two-decade trends in primary Helicobacter pylori resistance to antibiotics in Bulgaria
Lyudmila Boyanova
Medical Microbiology, Medical University of Sofia, 1431 Sofia, Bulgaria
Diagn Microbiol Infect Dis 67:319-26. 2010
..Metronidazole and tetracycline did not show a resistance evolution but exhibited a decrease in MIC(50) since 1990. The significant increase in ciprofloxacin resistance was found only by extending the study period to 20 years...
- Association of iceA and babA genotypes in Helicobacter pylori strains with patient and strain characteristics
Lyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, 1431 Sofia, Bulgaria
Antonie Van Leeuwenhoek 98:343-50. 2010
..pylori in Bulgaria. Both iceA1 and babA2 genotypes were associated with other virulence factors of H. pylori and, in addition, the iceA1 allele was associated with the strain susceptibility...
- Geographic map and evolution of primary Helicobacter pylori resistance to antibacterial agents
Lyudmila Boyanova
Department of Medical Microbiology, Medical University of Sofia, Zdrave Street 2, 1431 Sofia, Bulgaria
Expert Rev Anti Infect Ther 8:59-70. 2010
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- High prevalence of virulent Helicobacter pylori strains in symptomatic Bulgarian patients
Lyudmila Boyanova
Chair of Medical Microbiology, Medical University of Sofia, 1431 Sofia, Bulgaria
Diagn Microbiol Infect Dis 64:374-80. 2009
..1%), vacA s1 (97.4%), and cagA+/vacA s1 strains (79.5%) was found by multiplex PCR in gastric biopsies in the 2nd center. In conclusion, H. pylori strains with virulent genotypes are widespread in symptomatic Bulgarian patients...
- Prevalence of multidrug-resistant Helicobacter pylori in Bulgaria
Lyudmila Boyanova
Chair of Microbiology, Medical University of Sofia, Sofia, Bulgaria
J Med Microbiol 58:930-5. 2009
..H. pylori susceptibility patterns have a tendency to become unpredictable and should be monitored constantly at both national and global levels...
- Anti-Helicobacter pylori activity of Lactobacillus delbrueckii subsp. bulgaricus strains: preliminary report
L Boyanova
Department of Microbiology, Medical University of Sofia, Sofia, Bulgaria
Lett Appl Microbiol 48:579-84. 2009
..To evaluate the activities of six Lactobacillus delbrueckii subsp. bulgaricus (LB) strains against 30 Helicobacter pylori strains by agar-well diffusion method...
Detection of Helicobacter pylori infection in symptomatic Bulgarian adultsL Boyanova
Department of Microbiology, Medical University of Sofia, Bulgaria
Clin Microbiol Infect 13:908-14. 2007
..Culture provided a highly accurate diagnostic approach. Stomach biopsies from non-treated patients can be frozen for several days. The benefit of reporting H. pylori density, as determined by culture, requires further evaluation...
- The status of antimicrobial resistance of Helicobacter pylori in eastern Europe
L Boyanova
Department of Microbiology, Medical University of Sofia, Sofia, Bulgaria
Clin Microbiol Infect 8:388-96. 2002
..To evaluate the primary, secondary and combined resistance to five antimicrobial agents of 2340 Helicobacter pylori isolates from 19 centers in 10 countries in eastern Europe...
- Xanthoma of the stomach--some morphometrical peculiarities and scanning electron microscopy
S Petrov
Department of Pathology, Dr Ratcho Angelov District Hospital, Sofia, Bulgaria
Hepatogastroenterology 46:1220-2. 1999
..The aim of our investigation was to evaluate the frequency of the so-called "gastric xanthoma" in biopsy specimens and to describe the picture elicited by scanning electron microscopy...
