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ORIGINAL ARTICLE
Veterinary Research Forum
Veterinary Research Forum. 2017; 8 (1) 23 - 28
Journal Homepage: vrf.iranjournals.ir
Effects of silver nanoparticles on Staphylococcus aureus contaminated open wounds healing in mice: An experimental study Masood Adibhesami1*; Malahat Ahmadi2; Amir Abbas Farshid3; Farshid Sarrafzadeh-Rezaei4; Bahram Dalir-Naghadeh5 1
PhD candidate, Department of Microbiology; 2 Department of Microbiology; 3 Department of Pathobiology; 4 Department of Surgery and Diagnostic Imaging; 5 Department of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
Article Info
Abstract
Article history:
The microorganisms have been noted as the main cause of delayed wound healing. The most common pathogen causing the wound infections is Staphylococcus aureus. Silver nanoparticles (AgNPs) show ample antibacterial activities. In the present study, the effect of AgNPs on mouse wounds inoculated with S. aureus was investigated. Sixty male mice (20 to 30 g) were anesthetized, full-thickness skin wounds were made on their back and then the bacterial suspension was added to each wound bed. Treatments were administered on wound bed topically including gentamicin (8 mg kg-1), AgNPs (0.08 mg kg-1, 0.04 mg kg-1 and 0.02 mg kg-1) and normal saline in the control group. Wound healing was monitored macroscopically by taking digital photographs on days 0, 7, 14 and 21 of the experiment. Topical application of gentamicin and AgNPs (0.08 and 0.04 mg kg-1) significantly increased the rate of wound healing more than treatment with AgNPs at a dose of 0.02 mg kg-1and normal saline. The presence of silver nanoparticles in AgNPs groups (especially 0.08 mg kg-1) improved wound appearance better than other groups without silver nanoparticles (gentamicin and control groups) and led to lesser wound scars. According to data analysis, healing rate of treated mice with gentamicin and AgNPs (0.08 mg kg-1) was significantly (p < 0.001) faster than treated mice with other AgNPs doses and normal saline. The results of current study introduced an in vivo nanosilver accelerating effects on the treatment of on S. aureus infected skin wounds.
Received: 15 May 2016 Accepted: 18 October 2016 Available online: 15 March 2017 Key words: Infection Nanoparticle Silver Skin Wound healing
یک مطالعه تجربی:اثرات نانوذرات نقره بر روی التیام زخم های باز آلوده شده با استافیلوکوکوس اورئوس درموش سوری چکیده نانوذرات نقره فعالیت های ضدباکتریایی. رایجترین عامل پاتوژن عفونت های زخم استافیلوکوکوس اورئوس می باشد.میکروارگانیسمها به عنوان علت اصلی تاخیر التیام زخم مشخص شده اند زخم، گرم) بیهوش شدند30 تا20( قطعه موش نر60 تعداد. تاثیر نانوذرات نقره بر روی زخمهای موش تلقیح شده با استافیلوکوس اورئوس بررسی شده است، در این مطالعه.زیادی را نشان می دهند تیمارهایی که به صورت موضعی بر روی بستر زخم تجویز می شدند شامل.های تمام ضخامت پوستی در پشت آنها ایجاد گردید و سپس سوسپانسیون باکتریایی به هر بستر زخم اضافه گردید التیام زخم به طور. میلی گرم بر کیلوگرم) و سالین نرمال در گروه شاهد بودند0/08 میلی گرم بر کیلوگرم و0/04 ، میلی گرم بر کیلوگرم0/02( نانوذرات نقره،) میلی گرم بر کیلوگرم8( جنتامایسین میلی گرم بر کیلوگرم به طور معنی داری میزان0/08 و0/04 تجویز موضعی جنتامایسین و نانودرات نقره به میزان. مطالعه بررسی شد21 و14 ،7 ،ماکروسکوپی از طریق عکس برداری در روزهای صفر میلی گرم بر0/08 حضور نانوذرات نقره در گروه های نانوذرات نقره (به ویژه. میلی گرم بر کیلوگرم و سالین نرمال تسریع بخشید0/02 التیام زخم را بیشتر از گروههای تیمار با نانوذرات نقره به میزان میزان التیام در موش های، طبق تحلیل داده ها. کیلوگرم) ظاهر زخم را بهتر از سایر گروههای فاقد نانوذرات نقره (گروههای جنتامایسین وشاهد ) بهبود بخشید و اثرات زخم کمتری بر جای گذاشت نتایج.) سریعتر از موش های درمان شده با سایر مقادیر نانوذرات نقره و سالین نرمال بودp