Search

Your search keyword '"Dadashi, Masoud"' showing total 220 results
Start Over Author "Dadashi, Masoud"
220 results on '"Dadashi, Masoud"'

26. Genetic diversity and biofilm formation of invasive and noninvasive Streptococcus agalactiae isolates: Emergence of hypervirulent CC19 strains in Tehran, Iran.

Author

Goudarzi, Mehdi, Haghighi, Mehrdad, Mirzaei, Yousef, Pourhossein, Behzad, Dadashi, Masoud, and Nasiri, Mohammad Javad

Subjects
STREPTOCOCCUS agalactiae, GENETIC variation, BIOFILMS, STREPTOCOCCAL diseases, MICROPLATES
Abstract

The prevalence of Streptococcus agalactiae infections in adult populations is increasing. The current study aimed to characterize the genetic features of S. agalactiae strains responsible for different infections. A cross-sectional study was performed on 65 S. agalactiae strains (30 invasive and 35 noninvasive) isolated from non-pregnant women. All S. agalactiae isolates were confirmed by atr and dltS PCR assays. Antibiotic susceptibility patterns were determined using the disk diffusion method. Biofilm production was investigated by microtiter plate assay. PCR was done to detect resistance determinants. Isolates were characterized using the multilocus sequence typing (MLST) method. cMLSB, iMLSB, and M phenotypes accounted for 47.7%, 30.8%, and 6.2%, respectively. MDR was detected in 15.4% of noninvasive and 44.6% of invasive isolates. MtP assay indicated that 80% of isolates were biofilm producers. Biofilm formation was common among noninvasive compared with invasive strains (94.3% versus 66.7%). tet (M) (46.2%) and erm (B) (69.2%) were the most prevalent tetracycline and macrolide-resistance genes. The most prevalent serotype was type III (50.8%), followed by Ia (18.4%), II (15.4%), V (12.3%), and IV (3.1%). The frequency of serotype III among biofilm producer strains (81.8%) was found to be significantly higher than that of non-producer isolates (18.2%) (P < 0.05). S. agalactiae was resolved within four clonal complexes, including CC19 (46.2%; in both invasive and noninvasive), followed by CC23 (30.8%; only noninvasive isolates), CC1 (15.4%; only noninvasive isolates) and CC17 (7.6%; only invasive isolates). The main sequence types (STs) found were ST19 (27.7%), ST17 (7.7%), ST27 (6.2%), and ST28 (4.6%) linked with invasive infections and ST23 (18.4%), ST933 (12.3%), ST644 (9.2%), ST19 (7.7%), ST1 (6.2%) found in noninvasive infections. The high prevalence of CC19 and CC23 clones among S. agalactiae strains reflects the emergence of these lineages as successful clones in Iran. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

31. Investigation of the Potential Presence of Porphyromonas gingivalis in Esophageal Squamous Cell Carcinoma (ESCC) Paraffin-Embedded Tissue Samples.

Author

Taghavi, Afsoon, Dadashi, Masoud, Khaleghnejad, Saeideh, Delfani, Somayeh, Elkhichi, Parisa Abedi, nasri, Parto, and Hajikhani, Bahareh

Subjects
*PORPHYROMONAS gingivalis, *SQUAMOUS cell carcinoma, *ESOPHAGEAL cancer, *POLYMERASE chain reaction, *BACTERIAL diseases
Abstract

Background and Aim: Esophageal cancer is the eighth most common cancer and the sixth leading cause of cancer death worldwide. Evidence suggests that there is a link between bacterial infection and malignancy. There are few studies on the prevalence of Porphyromonas gingivalis in esophageal squamous cell carcinoma (ESCC), so this study aimed to investigate the possible presence of this bacterium in ESCC tissue samples. Materials and Methods: In this study, 34 esophageal squamous cell carcinoma samples were collected to evaluate the potential presence of Porphyromonas gingivalis. After extracting the DNA, the polymerase chain reaction (PCR) technique was used to detect the presence of the bacterium molecularly. Results: The age range of the study population was 26 to 90 years, with a mean age of 63 years. Most tissue samples come from stage I cancer (73.5%). Based on the molecular analysis, no P. gingivalis was detected in any biopsy specimens Conclusion: P. gingivalis infection and ESCC were not correlated based on the current in this study. Likely, the use of fresh samples, more accurate diagnostic methods, geographic differences, and larger sample sizes all contribute to the differences in results between related research, which can be clarified through large-scale studies. [ABSTRACT FROM AUTHOR]

Published
2023

33. Global distribution, genotypes and prevalent sequence types of colistin-resistant Klebsiella pneumoniae isolated from clinical samples; A systematic review

Author

Sameni, Fatemeh, primary, Ghazi, Mona, additional, Dadashi, Masoud, additional, Bostanshirin, Nazila, additional, Al-Dahmoshi, Hussein O.M., additional, Khosravi-Dehaghi, Nafiseh, additional, Nasiri, Mohammad Javad, additional, Goudarzi, Mehdi, additional, and Hajikhani, Bahareh, additional

Published
2022
Full Text
View/download PDF

36. CHARACTERIZATION OF STAPHYLOCOCCUS AUREUS ISOLATED FROM BURN WOUND; STRONG ANTIBACTERIAL ACTIVITY OF PHAGE COCKTAIL AGAINST VANCOMYCIN INTERMEDIATE-RESISTANT STAPHYLOCOCCUS AUREUS

Author

Taheri, Fateme, primary, Hashemi, Ali, additional, Haghighi, Mehrdad, additional, Dadashi, Masoud, additional, Nasiri, Mohammad Javad, additional, Khoshnood, Saeed, additional, Hajikhani, Bahareh, additional, Miri, Mirmohammad, additional, Pourhossein, Behzad, additional, and Goudarzi, Mehdi, additional

Published
2022
Full Text
View/download PDF

44. Diagnostic Accuracy of Pyrazinamide Susceptibility Testing in Mycobacterium tuberculosis: A Systematic Review with Meta-Analysis

Author

Bagheri, Mohammad, primary, Pormohammad, Ali, additional, Fardsanei, Fatemeh, additional, Yadegari, Ali, additional, Arshadi, Maniya, additional, Deihim, Behnaz, additional, Hajikhani, Bahareh, additional, Turner, Ray J., additional, Khalili, Farima, additional, Mousavi, Seyyed Mohammad Javad, additional, Dadashi, Masoud, additional, Goudarzi, Mehdi, additional, Dabiri, Hossein, additional, Goudarzi, Hossein, additional, Mirsaeidi, Mehdi, additional, and Nasiri, Mohammad Javad, additional

Published
2021
Full Text
View/download PDF

45. The Global Prevalence of Daptomycin, Tigecycline, and Linezolid-Resistant Enterococcus faecalis and Enterococcus faecium Strains From Human Clinical Samples: A Systematic Review and Meta-Analysis

Author

Dadashi, Masoud, primary, Sharifian, Parastoo, additional, Bostanshirin, Nazila, additional, Hajikhani, Bahareh, additional, Bostanghadiri, Narjess, additional, Khosravi-Dehaghi, Nafiseh, additional, van Belkum, Alex, additional, and Darban-Sarokhalil, Davood, additional

Published
2021
Full Text
View/download PDF

47. Corrigendum to “Molecular characterization of Staphylococcus aureus strains isolated from hospitalized patients based on coagulase gene polymorphism analysis: High frequency of Vancomycin-intermediate S. aureus and the emergence of coagulase type II in Iran” [Gene Rep. 23 (2021) 101078]

Author

Soltani, Malihe, primary, Hajikhani, Bahareh, additional, Zamani, Samira, additional, Haghighi, Mehrdad, additional, Hashemi, Ali, additional, Nasiri, Mohammad Javad, additional, Dadashi, Masoud, additional, Pourhossein, Behzad, additional, and Goudarzi, Mehdi, additional

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results