نتایج جستجو برای: streptococcus
تعداد نتایج: 41289 فیلتر نتایج به سال:
Background and purpose: Dental caries is a pathological infectious disease. It begins with the formation of dental plaques which is a structurally and functionally organized biofilm. Streptococcus mutans is the most important bacterium in the formation of dental plaque and dental caries. This study aimed at evaluating the antibacterial and antibiofilm activity of Quercus infectoria galls agains...
Background & Aim: Due to the prevalence of oral bacteria, their complications and increased microbial resistance and also recognition of the antibacterial properties of Polylophium involucratum, in this study, the antimicrobial properties of this plant essential oil were tested in different dilutions on oral bacteria at the Faculty of Microbiology of the Islamic Azad U...
conclusions tuberculosis was an important cause of cap in our region. hence, it should be considered in all patients admitted with a cap diagnosis. results among 120 patients with cap, the most common etiology was s. pneumoniae (24.4%), followed by mycobacterium tuberculosis (17.5%), s. aureus (6.7%), polymicrobial agents including anaerobes (4.2%), complicated hydatid cyst (2.5%), influenza a ...
مقدمه و هدف: streptococcus canis باکتری گرم مثبت است که جزء باکتری های بتا همولیتیک گروه g لانسفیلد استرپتوکوکوسی می باشد.این باکتری فرصت طلب و پاتوژن به طور معمول در مخاط دستگاه تنفس فوقانی,روده ودستگاه ادراری - تناسلی وجود دارد.برخی از سویه های این باکتری به عنوان فلور طبیعی در سطح پوست یا سطوح مخاطی دیده می شوند ولی برخی دیگر باعث ایجاد بیماری های جدی و عفونت های کشنده می شوند.اگرچه به نظر م...
Background and Aim: Due to the increasing use of restorative materials, finding a suitable material with low adhesion rate and colonization of pathogenic Streptococcus mutans has a significant importance. The purpose of this study was the comparison of the adhesion rate of Streptococcus mutans to “Nano-hybrid composite” and “Amalgam” at 1, 3, and 7 day intervals. Method...
this study was conducted to detect the common bacteria implicated in bovine mastitis in bulk tank milk by polymerase chain reaction (pcr). forty-four milk samples from bulk tank milk were obtained and submitted to our laboratory. to detect staphylococcus aureus, streptococcus agalactiae, streptococcus dysgalactiae, escherichia coli, streptococcus uberis, and streptococcus parauberis, two sets o...
objective(s): streptococcus pyogenes produces extracellular hyaluronidase enzyme. this enzyme is directly associated with the spread of the organism during infection. the objective of the present study was to clone and express the nucleotide sequence of the enzyme which is involved in hyaluronidase enzymatic activity. materials and methods: the enzymatic region of hyaluronidase gene was detecte...
در پنج سال اخیر، سپتی سمی در قزل آلای پرورشی در شهر ایلام رخ داده که بر اساس آزمایشات بیوشیمیایی عامل بروز آن streptococcus iniae شناسایی شد. ماهیان بیمار علائم بالینی نظیر بی حالی، شنای نامنظم، تیرگی پوست و اگزوفتالمی را نشان دادند. در این مطالعه 60 قطعه ماهی با علائم کلینیکی ذکر شده از مزارع پرورشی قزل آلای رنگین کمان واقع در اطراف شهر ایلام (جنوب غربی ایران) در بهمن ماه 1388 جمع آوری شد. جهت...
statement of problem: streptococcus viridans is one of the most important micro-organisms in the establishment of infections leading to dental caries and heart valve damages. therefore the diagnosis and prevention of these infections is critical in health care. purpose: the aim of this in-vivo study was to determine the prevalence of viridans streptococci in abscesses occurring in the maxillofa...
introduction group a β-hemolytic streptococcus is the most common cause of bacterial pharyngitis among 5 - 15-year-old children, but it is uncommon in children less than three years old and rarely happens in infants less than one year old. case presentation the patient was a 62-day-old female infant who presented with fever and poor feeding since two days before admission. at the time of admiss...
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