Related Papers
Development of cellulase hyperproducing mutants derived from the fungus Trichoderma reesei
Samira Shahbazi, Hamed Askari
Background and Aim: Filamentous fungi Trichoderma reesei are considered to be one of the most efficient producers of cellulase capable of degrading cellulose which is the most abundant biopolymer on the Earth. In recent years, cellulases have become industrially important enzymes that are used in a variety of biotechnical applications such as in food, animal feed, pulp and paper, textile and detergent industries and especially in bioethanol technology. In order to make those applications economically feasible, the yields of the cellulolytic enzymes needs to be increased. So investigation on improvement of cellulase productivity is a remarkable object for research. The aim of this study was to enhance extracellular cellulase production of T. reesei using gamma irradiation. Methods: We obtained the T. reesei strain (PTCC 5142) from the Persian Type Culture Collection and maintained it on PDA(Potato-Dextrose-Agar) plates. Mutants were generated by exposing spore suspension of T.reesei ...
The Antimicrobial Effect and Interaction Between the Aqueous and Ethanolic Extracts of Plantago Major on Staphylococcus Aureus, Listeria Innocua, Escherichia Coli and Pseudomonas Aeruginosa in Vitro
2017 •
Gautam Ganeshan
BMC Research Notes
Occurrence of some common carbapenemase genes in carbapenem-resistant Klebsiella pneumoniae isolates collected from clinical samples in Tabriz, northwestern Iran
Morteza Saki
Objectives This study aimed to evaluate the antibiotic resistance patterns and prevalence of carbapenemase genes in Klebsiella pneumoniae isolates in different clinical samples from Tabriz city, northwestern Iran. Results This cross-sectional study was conducted in the Department of Microbiology, Islamic Azad University, Ahar Branch, Iran, in 2020. K. pneumoniae isolates were collected from different clinical samples, including blood, wounds, sputum, and urine. The isolates were identified using a series of standard bacteriological tests. Antibiotic resistance was determined by the disc diffusion method. The presence of blaVIM, blaNDM, blaKPC, blaOXA, and blaIMP genes were screened by polymerase chain reaction (PCR). A total of 100 non-duplicated K. pneumoniae isolates were collected from 57 urine samples, 27 blood samples, 13 wound samples, and 3 sputum samples. Overall, 70.0% of the samples were from inpatients, while 30.0% were from outpatients. The most resistance rate was relat...
caspian journal of environmental sciences
Prevalence of SHV gene and antibiotic resistance of extended-spectrum β-lactamase-producing Escherichia coli strains isolated from abattoir wastewater in Mazandaran Province, north of Iran
2020 •
NARGES TONEKABONI
Abattoir wastewater is a major source of pollution burden and life-treating human pathogenic bacteria. The aim of this study was to determine the extended-spectrum β-lactamase-producing (ESBL) producing E. coli isolates and their antibiotic resistances in wastewater samples. In this experimental study, abattoir wastewater samples were collected and identified from 32 different regions in Mazandaran Province, North Iran. Disk agar diffusion test was applied for testing antibiotic resistance. Phenotypic detection of ESBL-producing isolates was performed using combined disk method. The presence of blaSHV gene was investigated using PCR method. The prevalence of E. coli in wastewater samples was 10%. The ESBL test analysis was positive for 14 (93.33%) isolates. The prevalence of blaSHV gene in ESBL-producing E. coli isolates was 93.34%. The highest antibiotic resistances in ESBL-producing E. coli were found concerning to ceftizoxime and gentamicin (100%), nalidixic acid, ceftazidime and...
Vaccination Coverage in 24 to 36 Months Old Children at Marginalized Area of Kermanshah
2015 •
arvin tavakoli
Background and objective: Immunization is one of the most efficacious, cost-effective and safe public health interventions. Vaccines continue to have a tremendous impact on public health, saving millions of lives each year.Thepurpose of this study was determining vaccination coverageand reasons for nonvaccination in children (24-36 month old)that live in marginalized area in Kermanshah city Materials and methods: In this descriptive analytic study, 420 children (24-36 month old)were selected. Sampling method was cluster sampling and included 60 clusters with7children who live in slum area in Kermanshah city .Information was collected by a questionnaire referring to children'svaccination card. Data collected were analyzed usingSPSS v13 software and chi-square. Results: In this study,46.2% girls and 53.8% 8 % boys participated . The coverage of at birth doses including BCG, HepatitisB1 and Polio0 were 100%, DTP3, Polio3, Hepatitis B3 and MMR1 vaccines were more than 97%.There was ...
Journal of Medical Microbiology and Infectious Diseases
Maryam Shafaati
Prevalence of β-Lactamase Production and Antimicrobial Susceptibility of Multidrug Resistant Clinical Isolates of Non-Fermenting Gram Negative Bacteria From Hospitalized Patients in Kerman/Iran
Shahla Mansouri, Fatemeh Norouzi
ORIGINAL REPORT Neonatal Bacteriemia Isolates and Their Antibiotic Resistance Pattern in Neonatal Insensitive Care Unit (NICU) at Beasat Hospital, Sanandaj, Iran
2014 •
nasrin bahmani
Bacteremia continues to result in significant morbidity and mortality, particularly among neonates. There is scarce data on neonatal bacteremia in among Iranian neonates. In this study, we determined neonatal bacteremia isolates and their antibiotic resistance pattern in neonatal insensitive care unit at Beasat hospital, Sanandaj, Iran. During one year, all neonates admitted to the NICU were evaluated. Staphylococcal isolates were subjected to determine the prevalence of MRS and mecA gene. A total of 355 blood cultures from suspected cases of sepsis were processed, of which 27 (7.6%) were positive for bacterial growth. Of the 27 isolates, 20 (74%) were Staphylococcus spp as the leading cause of bacteremia. The incidence of Gram negative bacteria was 04 (14.8%). The isolated bacteria were resistant to commonly used antibiotics. Maximum resistance among Staphylococcus spp was against Penicillin, and Ampicillin. In our study, the isolated bacteria were 7.5 % Vancomycin and Ciprofloxaci...
Biosis
Antibiofilm Activity of Methanol Extract of Rumex dentatus Against Pseudomonas aeruginosa
2020 •
sadegh shirsalimian
Avicenna Journal of Clinical Microbiology and Infection
Antibacterial Activity of Ethanolic Extract of Matricaria chamomilla, Malva cylvestris, and Capsella bursa-pastoris against Multidrug-Resistant Pseudomonas aeruginosa Strains
2021 •
Leila Fozouni
