P. Khaki

[ 1 ] - A study on the genetic analysis of clinical isolates and vaccine strains of Bordetella pertussis by pulsed-field gel electrophoresis (PFGE)

Considering the circulation of Bordetella pertussis clinical strains among populations with high vaccination coverage, it is necessary to have a proper understanding of this bacterium causing whooping cough. Various techniques, which are available for studying B. pertussis, can facilitate a proper comparison between different populations. We genotypically analyzed a collection of two vaccine st...

[ 2 ] - Preparation and in-vitro characterization of alginate microspheres incorporating leptospiral antigens as a delivery system and adjuvant

Leptospirosis is one of the most prevalent zoonotic diseases worldwide. Currently, multivalent whole-cell leptospiral vaccines can induce protection against leptospirosis. Therefore, preparation and formulation of new generations of vaccines that can stimulate long-term immunity for leptospirosis control are essential. The aim of this study was to prepare and characterize alginate microspheres ...

[ 3 ] - Subtyping of Salmonella enterica isolated from humans and food animals using Pulsed-Field Gel Electrophoresis

Salmonella infections are the second leading cause of zoonotic bacterial foodborne illness. Main source of infection in human is contaminated food products. The aim of this study was sub typing isolates of Salmonella entericaobtained during our previous study byPulsed Field Gel Electrophoresis (PFGE) technique. All 46 Salmonella isolates were serotyped and then subjected to PFGE. Total isolates...

[ 4 ] - Molecular detection of pathogenic leptospiral serovars by PCR, based on lipL21 gene

Leptospirosis is a zoonotic disease with global distribution that caused by pathogenic spirochetes of the genus Leptospira. Accurate diagnosis for differentiation of leptospirosis from other pyrogenic infections prevailing in the same locality and is imperative for proper treatment. Therefore a molecular diagnostic test with high specificity and sensitivity such as PCR is essential. Gene encodi...

[ 5 ] - Molecular characterization of the lipL41 gene of Leptospira interrogans vaccinal serovars in Iran

Leptospirosis caused by infection with pathogenic leptospires, which is the most prevalent zoonotic disease in the world. The outer membrane proteins (OMPs) of pathogenic leptospires such as LipL41 play a crucial role in pathogenesis of this disease. Therefore a major challenge to develop an effective vaccine against leptospirosis is application of basic research on the OMPs of leptospires to i...

[ 6 ] - Identification of Avian Salmonella Isolates by PCR-RFLP Analysis of a fliC Gene Fragment

The genus of Salmonella is very polymorphic and comprised of a number of genetically closely related serotypes. It is one of the emerging pathogen in food-borne disease which is often found in contaminated chicken eggs. Salmonella enterica is considered one of the major pathogens in public health worldwide. A total of 31 Salmonella isolates identified by specific antisera, which included Salmon...

[ 7 ] - Molecular cloning of Clostridium septicum vaccine strain alpha toxin gene in E. coli

Clostridium septicum a Gram positive anaerobic bacterium produces several toxins including alpha, beta, gamma and delta. C. septicum alpha toxin is lethal and is responsible for a serious disease known as gas gangrene. The aim of the present study was to molecular cloning and sequencing of C. septicum vaccine strain alpha toxin gene. Genomic DNA was extracted using standard phenol and chlorofor...

[ 8 ] - An optimized affordable DNA-extraction method from Salmonella enterica Enteritidis for PCR experiments

In diagnostic and research bacteriology settings with budget and staff restrictions, fast and cost-effective genome extraction methods are desirable. If not inactivated properly, cellular and/or environmental DNA nucleases will degrade genomic material during the extraction stage, and therefore might give rise to incorrect results in PCR experiments. When crude cell extracts, proteinase K–treat...

[ 9 ] - Design and evaluate alginate nanoparticles as a protein delivery system

In recent years, encapsulation of drugs and antigens in hydrogels, specifically in calcium alginate particles, is an interesting and practical technique that was developed widespread. It is well known that alginate solution, under proper conditions, can form suitable nanoparticles as a promising carrier system, for vaccine delivery. The aim of this study was to synthesis alginate nanoparticles ...

[ 10 ] - Isolation and identification of Mycoplasma agalactiae by culture and Polymerase Chain Reaction in Sheep and Goat Milk Samples in Kordestan province, Iran

Contagious agalactiae (C.A.) is one of the most common disease affecting small ruminants which is caused by Mycoplasma agalactiae. This disease is particularly widespread around the world and Iran is one of the countries that C.A. is present. The aim of this study was isolation and identification of M. agalactiae (MG) with culture and PCR technique in milk samples in Kordestan province, Iran. A...

[ 11 ] - Case Report of Meningoencephalitis in Calves Caused by Escherichia coli

[ 12 ] - کلونینگ وتعیین توالی ژن کد کننده lipL21، در سرووارهای واکسینال لپتوسپیرا اینتروگانس

زمینه: لپتوسپیروزیس نوعی بیماری مشترک بین انسان و دام است، که توسط باکتری لپتوسپیزا اینتروگانس ایجاد می‌شود. ژن بیان کننده LipL21 یکی از ژن‌های شناسایی شده در باکتری لپتوسپیرا است که فقط در سویه‌های بیماری‌زا وجود دارد. هدف از این تحقیق کلونینگ و آنالیز تعیین توالی ژن کد کننده لیپوپروتئین سطحی LipL21 در 5 سرووار واکسینال باکتری لپتوسپیرا اینتروگانس در ایران می‌باشد. مواد و روش‌ها: سرووارهای بی...

[ 13 ] - مقاومت آنتی‌بیوتیکی سالمونلا انتریکا، مولد بتالاکتامازهای وسیع‌الطیف تیپ CMY-2 در طیور

زمینه و هدف : سالمونلا به عنوان یک پاتوژن منتقله از غذا در سراسر جهان شناخته شده است. محصولات مرغ به‌طور گسترده به عنوان مخزن قابل توجهی برای سالمونلا محسوب می‌شوند. این مطالعه به منظور تعیین مقاومت آنتی‌بیوتیکی سالمونلا انتریکا، مولد بتالاکتامازهای وسیع‌الطیف (Extended Spectrum Beta Lactamases: ESBL) در طیور انجام شد. روش بررسی : در این مطالعه توصیفی آزمایشگاهی 70 سروتیپ سالمونلا انتریکا از جو...

[ 14 ] - کلونینگ و تعیین توالی ژن کد کننده لیپوپروتئین سطحی LipL41 در باکتری لپتوسپیرا اینتروگانس سرووار گریپوتیفوزا

زمینه و هدف: لپتوسپیروزیس یک بیماری عفونی می‌باشد که توسط سرووارهای بیماریزای لپتوسپیرا ایجاد می‌شود. افزایش ارتقای کیفی روش‌های کاربردی و معتبر در تشخیص این بیماری و همچنین تولید واکسن نوترکیب ، نیاز به آنتی‌ژن‌های اختصاصی دارد که در بین سرووارهای بیماریزای لپتوسپیرا یکسان و مشابه است. پروتئین‌های غشای خارجی لپتوسپیرا (OMPs)، آنتی‌ژن‌های مؤثری می‌باشند که قادر به تحریک پاسخ ایمنی مشخص در دوره ...

[ 15 ] - Study on the Antimicrobial Effects of Dr. Kamkar’s Herbal Cream on Different Pathogenic Microbial Strains

Backgrounds: Due to their antibacterial effects, herbal remedies have an important role in the treatment of infections; particularly in infected wounds. Increased bacterial resistance to antibiotics combined with increased side effects related to their administration has led many researchers to investigate alternative herbal treatments in recent years. In line with this trend, the objective of ...