نتایج جستجو برای: rdna 16s

تعداد نتایج: 31200  

Journal: :international journal of environmental research 2014
f. izadpanah qeshmi s. javadpour k. malekzadeh s. tamadoni jahromi m. rahimzadeh

l-asparaginase is a candidate enzyme for anti-neoplastic agent againstacute lymphoblasticleukemia and also extensively use in the food industry for prevention of acrylamide formation. l-asparaginase is widely distributed among microorganisms. in this study, marine bacteria were isolated from persian gulf and screened for l-asparaginase activity. production of l-asparaginase was carried out by u...

Journal: :international journal of advanced biological and biomedical research 2014
meysam soltani nejad gholam hosein shahidi bonjar fereydoon padasht dehkaei

bipolaris oryzae causes rice brown spot disease which reduces rice yield with substantial global impact. streptomycetes isolated from rice fields of guilan province, iran, showed antifungal activity against the tested pathogen. from five active streptomyces spp. isolates, isolate g showed high antagonistic activity. to determine its taxonomical identity, its colonies characterized morphological...

Journal: :journal of medical bacteriology 0
bahareh lashtoo aghaee 1 department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran. mohammad hassan shirazi 1 department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran. mohammad reza pourmand 1 department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran. mostafa hosseini 2 department of statistics school of public health, tehran university of medical sciences, tehran, iran. davood afshar 1 department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran. sara hajikhani 1 department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran.

background :   vibrio species including v. cholera , v. mimicus , v. parahaemolyticus , and v. vulnificus may cause gastrointestinal diseases after seafood consumption, and wound infections in swimmers and fishermen after exposing to seawater. this study determined the prevalence of the four vibrio species in tonkabon and ramsar recreational beach water (approximately 200 meter far from the pla...

Journal: :archives of razi institute 2016
m. shafipour m. ghane s. rahimi alang s. livani e. ghaemi

the identification of mycobacteria in the species level has great medical importance. biochemical tests are laborious and time-consuming, so new techniques could be used to identify the species. this research aimed to the comparison of biochemical and sequencing 16s rdna gene methods to identify nontuberculous mycobacteria in patients suspected to tuberculosis in golestan province which is the ...

Journal: :current medical mycology 0
nasser keikha msc in medical mycology, infectious diseases and tropical medicine research center, zahedan university of medical sciences, zahedan, iran amin ayatollahi mousavi laboratory associate professor in medical mycology, infectious diseases and tropical medicine research center, kerman university of medical sciences, kerman, iran gholam hosein shahidi full professor, department of plant pathology, faculty of agricultural engineering, shahid bahonar university of kerman, kerman, iran bahman fouladi department of medical mycology and parasitology, zabol university of medical sciences ali reza izadi department of medical mycology and parasitology, kerman university of medical sciences, kerman, iran

background and purpose: cutaneous infections arise from a homogeneous group of keratinophilic fungi, known as dermatophytes. since these pathogenic dermatophytes are eukaryotes in nature, use of chemical antifungal agents for treatment may affect the host tissue cells. in this study, we aimed to evaluate the antifungal activity of actinomyces species against trichophyton mentagrophytes (abbrevi...

مجتبی محسنی, محدثه صالح قمری

نورتابی زیستی (بیولومینانس) واکنشی شیمیایی است که سبب نشر نور در موجودات زنده می‌گردد. باکتری‌های نورافشان، فراوان‌ترین موجودات نورافشان در طبیعت هستند. برای شناسایی این باکتری‌ها از آزمون‌های بیوشیمیایی استفاده می‌شود. بررسی مولکولی ژن luxA که توالی‌ آن در باکتری‌های نورافشان متفاوت است، می‌تواند در تشخیص این باکتری‌ها مناسب باشد. در پژوهش حاضر، نتایج تعیین جنس باکتری‌های نورافشان بر اساس آزمو...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2002
Xue-Gong Fan Xiao-Ning Peng Yan Huang Javed Yakoob Zhi-Ming Wang Yong-Ping Chen

Using polymerase chain reaction (PCR), we examined 16S ribosomal DNA (rDNA) of Helicobacter species in liver tissue specimens obtained from 15 patients with hepatocellular carcinoma. Sixty percent (9 of 15) of these specimens were found to be positive for Helicobacter species. Four 16S rDNA fragments from positive PCR samples were directly sequenced. By sequence comparison, all were found to be...

2017
Min-Sun Kim Jeonghyun Chang Mi-Na Kim Sang-Ho Choi Sung-Ho Jung Jae-Won Lee Heungsup Sung

BACKGROUND Cases of infective endocarditis (IE) require prompt etiological diagnosis for effective treatment. Molecular methods can aid in rapid and reliable diagnosis of culture-negative IE cases. We evaluated the utility of 16S rDNA PCR and sequencing in determining the causative agents of IE in valve tissues, especially when specimens were obtained after initiation of antimicrobial therapy. ...

Journal: :AIDS research and human retroviruses 2013
Felicity Fitzgerald Kathryn Harris Ronan Doyle Dagmar Alber Nigel Klein

Microbial translocation (MT) from the gut is implicated in driving immune activation, increasing morbidity and mortality in HIV. We used bacterial 16S rDNA PCR, Sanger sequencing, and high-throughput sequencing to identify microbial DNA in the bloodstream of HIV-infected children in London, United Kingdom. Blood samples were collected from sequential children attending the HIV clinic at Great O...

2008
Sonda Guermazi Patrick Daegelen Catherine Dauga Delphine Rivière Théodore Bouchez Jean Jacques Godon Gábor Gyapay Abdelghani Sghir Eric Pelletier Jean Weissenbach Denis Le Paslier

We have constructed a large fosmid library from a mesophilic anaerobic digester and explored its 16S rDNA diversity using a high-density filter DNA-DNA hybridization procedure. We identified a group of 16S rDNA sequences forming a new bacterial lineage named WWE3 (Waste Water of Evry 3). Only one sequence from the public databases shares a sequence identity above 80% with the WWE3 group which h...

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