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Jundishapur Journal of Microbiology

Samaneh Abbasi, Manoochehr Makvandi, Gharib Karimi, Niloofar Neisi
BACKGROUND: The SEN virus (SENV) is a prevalent blood borne pathogen that has a worldwide incidence. SENV is comprised of eight genotypes; genotypes H and D are frequently associated with the pathogenesis of non-A - E hepatitis and post-transfusion hepatitis in blood donors and hepatitis patients. So far, no SENV pathogenesis has been reported in the liver biopsies of SENV carriers, but the frequency of SENV and its related genotypes requires further molecular epidemiology studies in different regions of the world...
July 2016: Jundishapur Journal of Microbiology
Saeideh Najafi, Masood Ghane, Vahdat Poortahmasebi, Seyed Mohammad Jazayeri, Shahrokh Yousefzadeh-Chabok
BACKGROUND: Multiple sclerosis (MS) is a chronic debilitating disease known as one of the most common neurological dysfunctions in young adults. Recent studies suggest that infections with herpesviruses play a critical role in the pathogenesis of MS. OBJECTIVES: The present investigation aimed to detect the presence of cytomegalovirus (CMV) in patients with MS using polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) methods. PATIENTS AND METHODS: Plasma and peripheral blood mononuclear cells (PBMCs) were collected from MS patients (n = 82) and from blood donors as control group (n = 89)...
July 2016: Jundishapur Journal of Microbiology
Mehdi Goudarzi, Maryam Fazeli, Hossein Goudarzi, Mehdi Azad, Sima Sadat Seyedjavadi
BACKGROUND: The incidence of nosocomial Staphylococcus aureus infection is increasing annually and becoming a true global challenge. The pattern of Staphylococcus aureus protein A (spa) types in different geographic regions is diverse. OBJECTIVES: This study determined the prevalence of methicillin-resistant S. aureus and different spa types in S. aureus clinical isolates. MATERIALS AND METHODS: During a six-month period, 90 S. aureus isolates were recovered from 320 clinical specimens...
July 2016: Jundishapur Journal of Microbiology
Cai-Xia Liu, Chun Yan, Pan Zhang, Fang-Qu Li, Jing-Hong Yang, Xiang-Yang Li
BACKGROUND: Ralstonia mannitolilytica is an emerging opportunistic pathogen. Hospital outbreaks of Ralstonia spp. are mainly associated with contaminated treatment water or auxiliary instruments. OBJECTIVES: In this report, we summarize the clinical infection characteristics of R. mannitolilytica, the drug-susceptibility testing of the bacterial strains, and the results of related infection investigations. PATIENTS AND METHODS: We retrospectively analyzed the clinical information of 3 patients with R...
July 2016: Jundishapur Journal of Microbiology
Naser Mohammadpour Dounighi, Mehdi Razzaghi-Abyane, Mojtaba Nofeli, Hossein Zolfagharian, Fereshteh Shahcheraghi
BACKGROUND: Whooping cough is caused by Bordetella pertussis, and it remains a public health concern. Whole-cell pertussis vaccines have been commonly employed for expanded immunization. There is no doubt of the efficacy of whole cell pertussis vaccine, but it is necessary to improve the vaccine to decrease its toxicity. OBJECTIVES: In this study, an inactivation process of dealing with pertussis bacteria is optimized in order to decrease the bacteria content in human doses of vaccines and reduce the vaccine's toxicity...
July 2016: Jundishapur Journal of Microbiology
Elham Rezazadeh, Azar Sabokbar, Maryam Moazeni, Mohammad Sadegh Rezai, Hamid Badali
BACKGROUND: Candida species, as opportunistic organisms, can cause various clinical manifestations, ranging from mild cutaneous infections to systemic candidiasis in otherwise healthy individuals. Remarkably, the incidence and mortality rates of candidemia have significantly increased worldwide, even after advances in medical interventions and the development of novel antifungal drugs. OBJECTIVES: Given the possible resistance to antifungal agents, susceptibility testing can be useful in defining the activity spectrum of antifungals and determining the appropriate treatment regime...
July 2016: Jundishapur Journal of Microbiology
Mohammad Taghi Hedayati, Saeid Mahdavi Omran, Abbas Soleymani, Mojtaba Taghizadeh Armaki
CONTEXT: Mycotoxins are secondary metabolites produced by certain toxigenic fungi and the most of them are aflatoxins, fumonisins, trichothecenes, ochratoxin A, patulin, and zearalenone. EVIDENCE ACQUISITION: In consideration of the consumption of certain farm products for animal feed and the prevalence of toxigenic fungi and mycotoxins in food, the present study was performed to evaluate this situation in Iran with a review of the literature using search engines...
July 2016: Jundishapur Journal of Microbiology
Sajjad Ahmad, Faisal Ahmad, Faiz Ur Rahman, Salman Khan, Waheed Murad, Imran Mughal, Amjad Ur Rahman, Fida Muhammad Khan, Imad Khan, Hajra Ahmad
BACKGROUND: The distribution pattern of phase-variable genes varies from strain to strain and from region to region. The present study was carried out to investigate the distribution pattern of phase-variable genes within Pakistan-based Helicobacter pylori strains and to analyze and compare them with strains prevalent in other parts of the world. OBJECTIVES: To determine the distribution pattern of phase-variable genes in H. pylori strains circulating in Pakistan...
July 2016: Jundishapur Journal of Microbiology
Jayanta Kumar Patra, Kwang-Hyun Baek
BACKGROUND: Listeria monocytogenes is one of the most virulent types of bacteria and causes severe foodborne illness, such as listeriosis. Because this pathogen has become resistant to sanitizers and other disinfectants that are used to clean utensils and surfaces during food processing, it poses a serious threat to the food industry. OBJECTIVES: The study was conducted to determine the anti-listerial potential of essential oils extracted from four edible seaweeds against L...
July 2016: Jundishapur Journal of Microbiology
Mohammad Zarei, Mehrdad Ravanshad, Ashraf Bagban, Shahab Fallahi
BACKGROUND: The human immunodeficiency virus (HIV-1) is the etiologic agent of AIDS. The disease can be transmitted via blood in the window period prior to the development of antibodies to the disease. Thus, an appropriate method for the detection of HIV-1 during this window period is very important. OBJECTIVES: This descriptive study proposes a sensitive, efficient, inexpensive, and easy method to detect HIV-1. PATIENTS AND METHODS: In this study 25 serum samples of patients under treatment and also 10 positive and 10 negative control samples were studied...
July 2016: Jundishapur Journal of Microbiology
Tamer Ozsari, Gulhan Bora, Bulent Kaya, Kahraman Yakut
BACKGROUND: Acute gastroenteritis stemming from viral causes is very common during the childhood period. Rotavirus and enteric adenovirus are the most common factors of acute gastroenteritis encountered in infants and children. However, the epidemiology of rotavirus and enteric adenovirus gastroenteritis in the east Anatolia region is not well-known. OBJECTIVES: We aimed to evaluate the relationship between the distribution of antigen positivity in rotavirus and enteric adenovirus antigen tests required cases and demographic data retrospectively in pediatric patients admitted to our hospital...
June 2016: Jundishapur Journal of Microbiology
Zeinab Mohsenipour, Mehdi Hassanshahian
BACKGROUND: Biofilm formation is a primary cause of considerable bacterial destruction. OBJECTIVES: In an effort to combat these industrial and medical bacterial biofilm problems, our study aims to determine the antimicrobial effect of Euphorbia hebecarpa. MATERIALS AND METHODS: The inhibition efficiency of alcoholic extracts on the planktonic form of six pathogenic bacteria was evaluated using a disk diffusion technique. The minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) values were determined by means of a macrobroth dilution method...
June 2016: Jundishapur Journal of Microbiology
Yijie Guo, Cuiping Ding, Bo Zhang, Jun Xu, Meng Xun, Jiru Xu
BACKGROUND: Bovine leptospirosis is a widespread zoonotic disease, leading to serious economic losses in animal production and causing potential hazards to human health. Leptospiral lipopolysaccharide (L-LPS) plays an important role in leptospirosis pathogenicity. OBJECTIVES: With respect to L-LPS endotoxin-like activity, we examined bovine immune response to L-LPS and the inhibitory ability of bovine myeloid antimicrobial peptide-28 (BMAP-28) against L-LPS-induced immune activation in bovine cells...
June 2016: Jundishapur Journal of Microbiology
Hossein Hosseini Nave, Shahla Mansouri, Majid Taati Moghadam, Mohammad Moradi
BACKGROUND: Enteroinvasive Escherichia coli (EIEC) isolates cause dysentery in humans. Several virulence factors associated with EIEC pathogenesis have been characterized. Multilocus variable-number tandem-repeat analysis (MLVA) is a PCR-based method that has been used for genotyping bacterial pathogens. OBJECTIVES: The aim of this study was to investigate the distribution of virulence factor genes in EIEC isolates from patients with diarrhea in Kerman, Iran, as well as the genetic relationships between these isolates...
June 2016: Jundishapur Journal of Microbiology
Mansour Dabirzadeh, Mohammad Hashemi, Yahya Maroufi
BACKGROUND: Zoonotic cutaneous leishmaniasis (ZCL) is polymorphic disease that may show various clinical manifestations. OBJECTIVES: This study investigates the determination of genetic variation within the species of Leishmania major isolates from new cases in Chabahar, a port city in Southeast Iran (situated at the Iran-Pakistan border). Migration in this region indicates that leishmaniasis is spreading gradually, and a new micro-habitat focus appears each year...
June 2016: Jundishapur Journal of Microbiology
Xiaoli Xie, Meng Han, Liang Zhang, Laixing Liu, Zuye Gu, Mei Yang, Hongjun Yang
BACKGROUND: Mycobacterium tuberculosis is the major pathogen of tuberculosis, which affects approximately one-third of the world's population. The 6 kDa early secreted antigenic target (ESAT6) and the 10 kDa culture filtrate protein (CFP10), which are secreted by the ESX-1 system in M. tuberculosis, can contribute to mycobacterial virulence. OBJECTIVES: The aim of this study was to research the effects of M. tuberculosis ESAT6-CFP10 protein on macrophages during a host's was first and second exposures to M...
June 2016: Jundishapur Journal of Microbiology
Mohammad Taghi Akhi, Sirus Jedari Seifi, Mohammad Asgharzadeh, Mohammad Ahangarzadeh Rezaee, Shahram Abdoli Oskuei, Tahereh Pirzadeh, Mohammad Yousef Memar, Naser Alizadeh, Hasan Seifi Yarijan Sofla
BACKGROUND: Diarrhea is the most frequent health problem among children in developing countries. Defining the etiology of acute diarrhea is critical to disease therapy and prevention. Some anaerobic bacteria such as Enterotoxigenic Bacteroides fragilis (ETBF) strains cause diarrheal disease by production of enterotoxin in children less than 5 years old. OBJECTIVES: This study aimed to evaluate the prevalence of ETBF among common bacteria and viruses causing diarrhea in children aged less than five years...
June 2016: Jundishapur Journal of Microbiology
Nighat Fatima, Usman Mukhtar, Ihsan-Ul-Haq, Muneer Ahmed Qazi, Muniba Jadoon, Safia Ahmed
BACKGROUND: The endophytes of medicinal plants, such as Justicia adhatoda L., represent a promising and largely underexplored domain that is considered as a repository of biologically active compounds. OBJECTIVES: The aim of present study was isolation, identification, and biological evaluation of endophytic fungi associated with the J. adhatoda L. plant for the production of antimicrobial, antioxidant, and cytotoxic compounds. MATERIALS AND METHODS: Endophytic fungi associated with the J...
June 2016: Jundishapur Journal of Microbiology
Yang Guojun, He Yuping, Jiang Yan, Lin Kaichun, Xia Haiyang
BACKGROUND: Spinosad (a mixture of spinosyns A and D) is a unique natural pesticide produced by Saccharopolyspora spinosa. With regard to attempts to improve S. spinosa by classical mutagenesis, we propose that the bottleneck of screening out high-spinosad-production strains is probably caused by the fermentation media. OBJECTIVES: The current study aimed to identify a new medium to extensively investigate the potential of S. spinosa strains to produce spinosad...
June 2016: Jundishapur Journal of Microbiology
Huseyin Agah Terzi, Tayfur Demiray, Mehmet Koroglu, Guner Cakmak, Ihsan Hakki Ciftci, Ahmet Ozbek, Mustafa Altindis
INTRODUCTION: The Streptococcus anginosus group of bacteria are low-virulence bacteria existing as commensals in the oral flora and gastrointestinal tracts of humans. S. anginosus may spread to the blood in individuals with poor oral hygiene in cases of oral infections, such as gingivitis and tooth abscesses, that develop following the loss of mucosal unity. This may lead to infections in the whole body, primarily as brain and liver abscesses. CASE PRESENTATION: A 32-year-old male patient presented with complaints of nausea, vomiting, and diffuse abdominal pain...
June 2016: Jundishapur Journal of Microbiology
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