The emergence of Escherichia coli sequence type 131 (ST131) as a multidrug-resistant and virulent pathogen represents a major challenge to public health globally. Recently, the O25b/ST131 E. coli ...producing CTX-M-15 with high virulence potential has been reported worldwide, but has received little attention in Iran. This study is the first in Iran to specifically determine the spread of the O25b/ST131 clone producing CTX-M-15 among E. coli isolates belonging to the B2 phylogenetic group. ST131 clone in phylogenetic group B2 was detected based on PCR detection of ST131-specific single-nucleotide polymorphisms in mdh and gyrB. O25b/ST131 E. coli clone was confirmed utilizing O25b/ST131 clone allele-specific PCR for the pabB gene. All group B2 E. coli isolates were characterized based on antibiotic susceptibility, extended-spectrum β-lactamase (ESBL) enzymes, and virulence traits. Our results demonstrated that 38 out of the 154 B2 group isolates (24.7%) were identified as belonging to the ST131 clone. Furthermore, of these, 28 isolates (73.6%) were detected as O25b/ST131 clone. Antibiotic resistance of ST131 E. coli isolates to ciprofloxacin, gentamicin, cefotaxime, and aztreonam was significantly higher than non-ST131 isolates. Almost all of the O25b/ST131 isolates with the ability for ESBL production were reported as CTX-M-15 producing (95.5%). Our results showed that the most prevalent virulence trait in ST131 clone was ompT (94.7%). This study is the first to report the prevalence of the CTX-M-15-producing O25b/ST131 E. coli in Iran. Our findings reinforce the surveillance of dissemination of ST131 E. coli clone as a major drug-resistant pathogen and an important new public health threat.
Chlamydia trachomatis (CT), the most common bacterial sexually transmitted infection (STI), leads to pelvic inflammatory disease, infertility and chronic pelvic pain in women as well as an increased ...risk of vertical transmission, conjunctivitis and pneumonitis in infants. It may also be a co-factor along with human papillomavirus (HPV) in cervical cancer progression. We aimed to determine the prevalence of CT genotypes in genital specimens of women from South Khorasan, Iran and to test the association between CT and cytology statistics.
This was a cross-sectional study on 248 Pap smear samples from women who visited a gynecologist for routine Pap smear testing in South Khorasan province. Nested polymerase chain reaction (PCR) was used to test the residual fluids of Pap smears for CT-DNA after cytological examination. Direct sequencing, alignment and phylogenic analyses were performed on eight samples to identify their genotypes.
The mean age of patients was 37.54 ± 5.21 years. Most samples had a normal cytology (214 cases, 86.29%). Overall, 31 samples were positive for CT infection (12.5%) of which 20 (9.34%) were normal and 11 (32.35%) were abnormal, with the frequency difference being significant (P=0.022). The co-infection of CT/HPV in total was identified in 14 cases (5.6%). The results of sequencing eight samples out of the 31 CT positive samples revealed the detection of genotypes D and E, each with four cases.
We show that a high prevalence of genital CT infection is present in women with both normal and abnormal cytology; however, the higher prevalence among women in the abnormal group may indicate its involvement in cervical neoplasia.
Background: Infection by certain types of human papilloma virus (HPV) is known as a causal and essential factor for cervical cancer, the second most common malignancy in women around the ...world.Objectives: The aim of this study was to determine the frequency and types of HPV among women with normal and abnormal cytology in Southern Khorasan, eastern Iran.Methods: This was a cross-sectional study with 253 randomized Pap smear samples from women who were referred to gynecologist clinics. Human papillomavirus-DNA testing (a nested PCR with primers MY09/ MY11 and GP5 +/ GP6 +) was performed on Pap smear samples. The first round PCR product was subjected for sequencing to determine the HPV types. Phylogenic analysis with Mega 6 was carried out to determine the relationship between HPV types.Results: The mean age of patients were 34.47 ± 5.38 years; 85.77% with normal cytology, and the rest were with an abnormality; atypical cells of undetermined significance (ASCUS) and Low-grade squamous intraepithelial lesions (LISL). Human papilloma virus-DNA was detected in 18.57% of population (15.66% of normal and 36.11% of abnormal group) with the most prevalent HPV types 6 and 11. The HPV type 84 was identified in a case.Conclusions: The result of this study revealed a partially high prevalence of HPV in women with normal cytology which are high risk for transmission in population. It is suggested that HPV testing should be carried out along with Pap test in screening programs to enhance early detection of neoplasia and intended infections.
Background and Aim: Chronic otitis media with effusion is a common childhood infection. The present study aimed at determining the prevalence of bacterial causes of chronic otitis media with effusion ...and their drug resistance in patients with intact tympanic membranes. Materials and Methods: In this cross-sectional study of 100 patients with chronic otitis media with effusion who underwent myringotomy from October 2011 to September 2013 were selected through census and assessed. First of all, their middle ear secretions were collected and cultured in thioglycollate broth. Then, the isolated bacteria were identified and their drug sensitivity . was evaluated using standard disk diffusion method. Results: Out of 87 samples with positive culture results the most common bacteria isolated were coagulase-negative staphylococci (39%) and streptococcus alpha, beta, and non-hemolytic (24%). A significant association between the type of bacteria isolated from the ear with acute otitis media discharge (P = 0. 003), affected ears (P = 0. 049) and presence of allergy (P = 0. 029) was observed. Among the antibiotics tested, the highest sensitivity was that of levofloxacin (94. 7%), clindamycin (84. 9%), and ciprofloxacin (83. 3%) and the highest resistance belonged to oxacillin (77. 1%), trimethoprim-sulfamethoxazole (59. 4%) and cefixime (58. 3%). Conclusion: Based to the obtained results, when the middle ear secretion culture is impossible, administration of the antibiotics clindamycin and ciprofloxacin to the patients is recommended.
Background and Aim: The use of plant compounds to treat infections is an age-old practice in a large part of the world. Members of Rosacea family have long been used for food and medicinal purposes. ...The aim of this study is evaluation of antimicrobial effect of five different brands of rose water, water extract of Rosa damascene in comparison with rose oil. Materials and Methods: Five different brands of rose water, water extract of rosa damascene and rose oil were tested for antibacterial activity against Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212, Esherichia coli ATCC 25922, Pseudomonas aeruginosa and Candida albicans by broth micro dilution assay. Rosewater with five concentrations of 1%, 10%, 25%, 50%, 75% and 100% in the culture media and water extract of rosa damascene with six concentrations of 0.2, 2, 5, 10 ,15 and 20 mg/ml and Rose oil with five concentrations of 0.1, 1, 2.5, 5 and 10 μl/ml were studied. All bacterial turbidities were examined visually. Each test was repeated three times. Results: In this study, the use of any concentration of rose water failed to inhibit the growth of microorganisms, completely. However, we found that there is a significant difference between rising of rose water concentration and decreasing the microorganism growth. The minimum inhibitory concentration (MIC) values of water extract of Rosa damascene were 8 mg/ml in Staphylococcus aureus, 6 mg/ml in Enterococcus faecalis and Esherichia coli, 4 mg/ml in Candida albicans. The MIC values of rose oil were 10 µg/ml in Staphylococcus aureus and Esherichia coli, 5 µg/ml in Enterococcus faecalis, 1 µg/ml in Candida albicans. We also found no inhibitory effect of Rose extract and Rose oil on Pseudomonas aeruginosa . Conclusion: This study showed rose water, water extract of rosa damascene and rose oil have anti-microbial effects. However, clinical use of this material requires more and larger studies.
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