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Jundishapur Journal of Microbiology

Mahdi Khangholi, Ailar Jamalli
BACKGROUND: Bacteria utilize various methods in order to live in protection from adverse environmental conditions. One such method involves biofilm formation; however, this formation is dependent on many factors. The type and concentration of substances such as sugars that are present in an environment can be effective facilitators of biofilm formation. METHODS: First, the physico-chemical properties of the bacteria and the target surface were studied via the MATS and contact angle measurement methods...
September 2016: Jundishapur Journal of Microbiology
Safak Goktas, Mumtaz Cem Sirin
BACKGROUND: Acute respiratory tract infection (ARTI) is one of the most common infections worldwide, causing significant morbidity and mortality. OBJECTIVES: This study was conducted to determine the prevalence and seasonal distribution of respiratory viruses in our region, in children and adults with a pre-diagnosis of ARTI. METHODS: A total of 845 nasopharyngeal swab specimens were analyzed with the RespiFinder Smart 22 kit (PathoFinder BV, Netherlands) and the Rotor-Gene 6000 real-time PCR system...
September 2016: Jundishapur Journal of Microbiology
Oluwaseun Ayodeji Ishola, Seng Yeat Ting, Yasser M Tabana, Mowaffaq Adam Ahmed, Muhammad Amir Yunus, Rafeezul Mohamed, Leslie Thian Lung Than, Doblin Sandai
BACKGROUND: A major characteristic of Candida biofilm cells that differentiates them from free-floating cells is their high tolerance to antifungal drugs. This high resistance is attributed to particular biofilm properties, including the accumulation of extrapolymeric substances, morphogenetic switching, and metabolic flexibility. OBJECTIVES: This study evaluated the roles of metabolic processes (in particular the glyoxylate cycle) on biofilm formation, antifungal drug resistance, morphology, and cell wall components...
September 2016: Jundishapur Journal of Microbiology
Mayson H Alkhatib, Magda M Aly, Rajaa A Rahbeni, Khadijah S Balamash
BACKGROUND: Microemulsions (MEs), which consist of oil, water, surfactants, and cosurfactants, have recently generated considerable interest as antimicrobial agents. OBJECTIVES: To determine the antifungal and antiviral activities of three ME formulations (MEa, MEb, and MEc) that differ in their hydrophilicity. METHODS: The ME formulas were produced by mixing different fractions of Tween 80, Span 20, ethanol, oil, isopropyl myristate, and distilled water...
September 2016: Jundishapur Journal of Microbiology
Mahya Pourostadi, Jalil Rashedi, Behroz Mahdavi Poor, Hossein Samadi Kafil, Samaneh Shirazi, Mohammad Asgharzadeh
BACKGROUND: Years after the development of antituberculosis (TB) drugs, many people continue to suffer from this disease. To control the spread of TB, strains of the Mycobacterium tuberculosis complex need to be determined, and sources of infection must be identified. Such steps should help to prevent transmission of the infection. OBJECTIVES: The aim of this study was to perform molecular genotyping of isolates of the M. tuberculosis complex obtained from patients in northwestern Iran...
September 2016: Jundishapur Journal of Microbiology
Afshin Barazesh, Bahador Sarkari, Farhad Mehrabi Sisakht, Samaneh Abdolahi Khabisi, Reza Nikbakht, Mohammad Reza Ravanbod
BACKGROUND: Toxoplasmosis is a life-threatening infection in organ transplant recipients, people receiving corticosteroid or radiation therapy, people with malignancies, and AIDS patients. OBJECTIVES: The current study aimed to determine the prevalence of toxoplasmosis in patients receiving chemotherapy for malignancies in the Bushehr province of southwest Iran. METHODS: Blood samples were taken from 86 patients who were continuously referred to the chemotherapy center in Bushehr province and evaluated by ELISA to determine anti-Toxoplasma IgG and IgM antibodies...
September 2016: Jundishapur Journal of Microbiology
Gordana D Jovanovic, Anita S Klaus, Miomir P Niksic
BACKGROUND: The highest incidence of listeriosis, due to consumption of ready-to-eat foods and fresh, shredded, minimally processed vegetables, occurs among pregnant women and the elderly. In order to reduce the prevalence of listeriosis among consumers, better protective measures are recommended. Chitosan films, with or without added essential oils, represent a modern, safe method of preserving the quality of such vegetables and significantly reducing the incidence of Listeria monocytogenes in these foods...
September 2016: Jundishapur Journal of Microbiology
Recai Zan, Tayfun Alacam, Ihsan Hubbezoglu, Tutku Tunc, Zeynep Sumer, Oguzhan Alici
BACKGROUND: The success of endodontic treatment depends on a few crucial factors. One of these factors is the complete chemomechanic preparation of root canal against various bacteria. In particular, the effect of resistant bacteria may cause intense pain with flare-up and formation of periapical lesions. Therefore, the strong effect of irrigants plays an important role in terms of the complete elimination of these bacteria to achieve long-term successful treatment. OBJECTIVES: The aim of this study was to investigate the antibacterial effects of super-oxidized water (SPO) in root canals infected with Enterococcus faecalis biofilms...
September 2016: Jundishapur Journal of Microbiology
Mohammad Ali Mohaghegh, Hossein Hooshyar, Mohsen Ghomashlooyan
No abstract text is available yet for this article.
September 2016: Jundishapur Journal of Microbiology
Saeed Falahat, Mana Shojapour, Abdorrahim Sadeghi
BACKGROUND: Bacterial resistance to antibiotics has become a major source of concern for public health. Pseudomonas aeruginosa strains are important opportunistic pathogens. These bacteria have a high resistance to a wide range of existing antimicrobials and antibiotics. OBJECTIVES: The present study was performed to evaluate the frequency of KPC in P. aeruginosa isolated from clinical samples of educational hospitals of Arak University of Medical Sciences, using the mentioned phenotypic and genotypic methods...
September 2016: Jundishapur Journal of Microbiology
Mohammad Shafiee, Seyed Ahmad Aleyasin, Seyed Javad Mowla, Mohammad Vasei, Seyed Amir Yazdanparast
BACKGROUND: Helicobacter pylori is a major human pathogenic bacterium in gastric mucosa. Although the association between gastric cancer and H. pylori has been well-established, the molecular mechanisms underlying H. pylori-induced carcinogenesis are still under investigation. MicroRNAs (miRNAs) are small noncoding RNAs that modulate gene expression at the posttranscriptional level. Recently, studies have revealed that miRNAs are involved in immune response and host cell response to bacteria...
September 2016: Jundishapur Journal of Microbiology
Marjan Motamedi, Zeinab Ghasemi, Mohammad Reza Shidfar, Leila Hosseinpour, Hossein Khodadadi, Kamiar Zomorodian, Hossein Mirhendi
BACKGROUND: Non-dermatophyte onychomycosis (NDO) is caused by a wide range of mold fungi other than dermatophytes, and has been reported at various rates in different countries worldwide. Studies on the incidence of NDO in the community are essential for understanding its epidemiology and control, as well as for the appropriate treatment of these infections. OBJECTIVES: In this study, the incidence of NDO in Tehran, Iran, was compared to the incidence of onychomycoses due to dermatophytes and yeasts...
August 2016: Jundishapur Journal of Microbiology
Mahin Jamshidi Makiani, Parivash Davoodian, Mahnaz Baghershiroodi, Abdol Azim Nejatizadeh, Farideh Fakkhar, Mehrangiz Zangeneh, Nadia Jahangiri
BACKGROUND: While tuberculosis (TB) can be diagnosed by microscopy and culture, the sensitivity of Ziehl-Neelsen staining is variable and culture results require 4 - 8 weeks to be determined. Polymerase chain reaction (PCR) and its modifications, including nested PCR, might be promising methods for the rapid diagnosis of TB. OBJECTIVES: This study aimed to evaluate the performance of nested PCR on urine samples of human immunodeficiency virus (HIV)-positive and -negative patients with different manifestations of clinical TB...
August 2016: Jundishapur Journal of Microbiology
Farrokh Izadpour, Nastaran Ranjbari, Mohammad-Reza Aramesh, Mojtaba Moosavian, Shiva ShahAli, Farzaneh Larki, Hamed Tabesh, Afrooz Morvaridi
BACKGROUND: In recent decades, multidrug-resistant non-fermenting Gram-negative pathogens, particularly Acinetobacter baumannii and Pseudomonas aeruginosa, have been recognized as a major cause of healthcare-associated and nosocomial infections and outbreaks. OBJECTIVES: The aim of this study was to determine the prevalence and pattern of antibiotic resistance in A. baumannii and P. aeruginosa isolates collected from intensive care units (ICUs). METHODS: One hundred fifty-five clinical isolates, including 80 (51...
August 2016: Jundishapur Journal of Microbiology
Seyed Mohsen Mahdiyoun, Hossein Kazemian, Mohammad Ahanjan, Hamidreza Houri, Mehdi Goudarzi
BACKGROUND: Staphylococcus aureus is one of the most important causative agents in community- and hospital-acquired infections. Aminoglycosides are powerful bactericidal drugs that are often used in combination with beta-lactams or glycopeptides to treat staphylococcal infections. OBJECTIVES: The main objective of the present study was to determine the prevalence of aminoglycoside resistance among methicillin-resistant Staphylococcus aureus (MRSA) isolates in hospitalized patients in Sari and Tehran, Iran...
August 2016: Jundishapur Journal of Microbiology
Abbas Mohajeri, Yones Pilehvar-Soltanahmadi, Jalal Abdolalizadeh, Pouran Karimi, Nosratollah Zarghami
BACKGROUND: Recombinant human endostatin (rhES) is an angiogenesis inhibitor used as a specific drug for the treatment of non-small-cell lung cancer. As mRNA concentration affects the recombinant protein expression level, any factor affecting mRNA concentration can alter the protein expression level. Response surface methodology (RSM) based on the Box-Behnken design (BBD) is a statistical tool for experimental design and for optimizing biotechnological processes. OBJECTIVES: This investigation aimed to predict and develop the optimal culture conditions for mRNA expression of the synthetic human endostatin (hES) gene in Escherichia coli BL21 (DE3)...
August 2016: Jundishapur Journal of Microbiology
Akram Taherirad, Roghayeh Jahanbakhsh, Fatemeh Shakeri, Shaghayegh Anvary, Ezzat Allah Ghaemi
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is a common cause of nosocomial and community-acquired infections around the world. Staphylococcal cassette chromosome mec (SCCmec) typing methods are often used to study MRSA molecular epidemiology. OBJECTIVES: The current study was designed to explore the distribution profiles of different SCCmec types among methicillin-resistant S. aureus strains isolated from hospitals in Gorgan, in northern Iran, and to correlate the types into observed bacterial virulence factors...
August 2016: Jundishapur Journal of Microbiology
Nadia Ghasemian, Majid Shahbazi
BACKGROUND: Based on differences in individual immune responses to the hepatitis B virus (HBV), between 5% and 10% of patients become persistently infected with the virus, which leads to the determination of chronic HBV. Cytokines such as interferon gamma (IFN-γ) are secretory proteins that play important roles in both innate and adaptive immune responses. Functional studies have demonstrated that the IFN + 874A/T gene polymorphism can increase or decrease the overall expression of IFN-gamma (γ) and ultimately determine the outcome of the infection...
August 2016: Jundishapur Journal of Microbiology
Dariush Shokri, Mohammad Rabbani Khorasgani, Saeideh Zaghian, Seyed Masih Fatemi, Milad Mohkam, Younes Ghasemi, Asghar Taheri-Kafrani
BACKGROUND: The emergence of pan-drug resistant strains (PDR) of Pseudomonas aeruginosa has led to renewed efforts to identify alternative agents, such as bacteriocins and bacteriocin-like inhibitory substances (BLISs). OBJECTIVES: The aims of this study were to determine the acquired resistance profiles of multidrug-resistant (MDR), extensively drug-resistant (XDR), and PDR P. aeruginosa isolates based on the revised definitions of the CDC and ECDC and to screen and characterize effective BLISs against these isolates...
August 2016: Jundishapur Journal of Microbiology
Ahmad Niknam, Mohammad Hossein Karimi, Ramin Yaghobi, Bita Geramizadeh, Jamshid Roozbeh, Mehdi Salehipour, Mahdiyar Iravani
BACKGROUND: The surveillance of kidney transplant patients depends on function of different immunologic markers like co-stimulatory molecules. These molecules may also be associated with post kidney transplant viral related outcomes. OBJECTIVES: The aim of this study was to investigate the possible associations between co-stimulatory molecule gene polymorphisms and viral infections in kidney transplant patients. PATIENTS AND METHODS: In total, 172 kidney transplant patients were included in this study...
August 2016: Jundishapur Journal of Microbiology
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