Vahid Karimi
Department of Avian Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
[ 1 ] - The effect of Allium sativum (Garlic) extract on infectious bronchitis virus in specific pathogen free embryonic egg
Objective: Garlic is a plant has been used as a flavor, and anti-microbial and anti-diarrheal agent. Infectious bronchitis virus (IBV) is a coronavirus. The available vaccines against IBV cannot cover new variants. This study evaluated the inhibitory effects of garlic extract on IBV. Materials and Methods: The constituents of garlic extract were detected by gas chromatography. This study was d...
[ 2 ] - Genotyping of Infectious bronchitis viruses isolated from broiler chicken farms in Iran during 2015-2016
BACKGROUND: Avian infectious bronchitis is considered as an important viral disease worldwide. Genotyping based on the S1 subunit of spike protein gene of the causative agent, avian infectious bronchitis virus, can be used to classify IBV isolates. Objective: This survey was carried out to characterize the infectious bronchitis virus (IBV) genotypes circulating in Iran and determine their preva...
[ 3 ] - Construction of an iss deleted mutant strain from a native avian pathogenic Escherichia coli O78: K80 and in vitro serum resistance evaluation of mutant
BACKGROUND: Colibacillosis, caused by different serotypes of avian pathogenic Escherichia coli (APEC), is one of the important diseases in poultry industry. The isolate O78 is the most prevalent serotype of APEC in Iran. One of the APEC virulence factors, increased serum survival (iss) gene, is related to serum resistance. The usual form of colibacillosis in avian is extraintestinal, and serum ...
[ 4 ] - Prevalence of avian metapneumovirus subtype B in live bird market in Gilan province, Iran
Avianmetapneumovirus (aMPV), also known as avian pneumovirus or turkey rhinotracheitis virus, is the causative agent of turkey rhinotracheitis and swollen head syndrome in chickens. Four aMPV subgroups (A-D) have been reported previously based on their genetic and antigenic differences. Evidence suggests that the live bird markets (LBMs) play an important role in the epidemiology of the avian v...
[ 5 ] - Pathogenicity study of Iranian genotype of avian infectious bronchitis virus (IR-1)
Avian infectious bronchitis (IB) is a major cause of economic losses in poultry industry. The IB virus primarily affects respiratory tract, but various strains differ in their tropism for other target organs such as kidney and alimentary tract. The objective of this study was to estimate the pathogenicity of Iranian IBV variant (IR-1), which is limited exclusively to Iran. Specific pathogen fre...
[ 6 ] - Prevalence of avian infectious bronchitis virus in broiler chicken farms in south of Iraq, 2014 – 2015
Avian infectious bronchitis (IB), caused by a gammacoronavirus, is an OIE-listed (List B) disease and characterized by respiratory and renal involvements, causing high mortality, and economic loss in both layers and broilers. In comparison with other diagnostic methods, real-time polymerase chain reaction (RT-PCR) and conventional RT-PCR are potent, more sensitive and faster techniques for infe...
[ 7 ] - بررسی میزان آلودگی موش‌ها به گونه‌های باکتری سالمونلا در مرغداریهای استان تهران
در این تحقیق که به منظور تعیین میزان آلودگی سالمونلایی مدفوع موشهای خانگی وصحرایی ساکن در مرغداریهای صنعتی اطراف تهران انجام گرفت، 290 نمونه مدفوع اخذ شده از موشهای مرغداریهای گوشتی و تخم گذار مورد بررسی قرار گرفتند که پس از انتقال به آزمایشگاه به نسبت یک به ده در محیط مایع سلنیت F کشت داده شدند و پس از گرمخانهگذاری در دمای مناسب و مدت زمان لازم در محیطهای انتخابی سالمونلا شیگلا آگار (SS)...
[ 8 ] - مقایسه شجره شناسی قطعه ژن 1S جدایه‌های ویروس برونشیت عفونی پرندگان در حال چرخش با واکسن‌های مصرفی در ایران
زمینه مطالعه: بیماری برونشیت عفونی پرندگان بسیار مسری، که می‌تواند موجب ضعف در وزن گیری و کاهش کارایی غذا در پرندگان آلوده شود. وجود سروتیپ™ژنوتیپ‌های متعدد گزارش شده، کنترل بیماری را با واکسن مشکل‌تر نموده است. به هر حال تنها معدودی اسیدهای آمینه پروتئین 1S مسئـول حفـاظـت در سـویـه‌هـای واکسـن و فیلدی می‌باشند. هدف: مقایسه جدایه‌های ویروس برونشیت در گله‌های طیور صنعتی ایران با واکسن‌های را...
[ 9 ] - پایش مولکولی تحت تیپ‌های ویروس آنفلوانزای پرندگان در اردک‌های بومی: یک مطالعه استانی
زمینه مطالعه :آلودگی به ویروس آنفلوانزای پرندگان در صنعت طیور ایران نخستین بار توسط تحت تیپ 2N9H در سال 1377 در استان قزوین تشخیص داده شد و از آن زمان به بعد در کشور به شکل اندمیک در آمده است. پرندگان آبزی مانند اردک‌های اهلی می‌توانند به عنوان مخزن تحت تیپ‌های موجود ویروس‌های آنفلوانزای پرندگان محسوب شوند و در گردش این ویروس‌ها در طبیعت و جمعیت‌های طیور اهلی نقش ایفا نمایند. گزارش منتشر شده از...
[ 10 ] - Detection and Molecular Characterization of Avian Rotaviruses in Broiler Farms in Guilan
Background: Avian rotaviruses are one of the important agents of enteritis in birds and have a worldwide distribution. These viruses have an important role in runting and stunting syndrome in chickens. Objectives: The aim of this study was detection and molecular characterization of avian rotaviruses in broiler farms in Guilan province. Methods: In this study, 100 samples were collected on diff...
[ 11 ] - Molecular Detection of Gamma Coronaviruses in Bird Parks of Iran
Gamma Coronaviruses (GCoVs) are distributed worldwide, affecting a wide range of bird species, the beluga whale, and bottlenose dolphins. Because of the limited proofreading capability in the viral encoded polymerase, they emerge genetically diverse. There has been no molecular surveillance data to describe the epidemiology of GCOVs in avian species. The present study was conducted to detect GC...
[ 12 ] - Characterization of Pigeon Paramyxovirus Type 1 Viruses (PPMV-1) Isolated from Iran
Newcastle disease (ND) is one of the contagious viral diseases in avian species. Recently, several ND outbreaks in pigeon caused by pigeon paramyxovirus serotype-1 (PPMV-1) have been reported in limited numbers from Iran and phylogenetic studies have been conducted on partial sequence of NDV fusion (F) gene. In the present study, ten PPMV-1, named Pigeon_paramyxovirus1_isolate_pigeon/Iran/UT_EG...
نویسندگان همکار