morphometric analysis of larval rostellar hooks in taenia multiceps of sheep in iran and its association with mitochondrial gene variability.
نویسندگان
چکیده
background: the purposes of the present study were morphometric characteri-zation of rostellar hooks of taenia multiceps and to investigate the association of hook length variation and the variability within two mitochondrial genes of sheep isolates of the parasite. methods: up to 4500 sheep brains were examined for the presence of c. cerebralis . biometric characters based on the larval rostellar hook size were measured for each individual isolate. representative mitochondrial co1 and 12s rrna gene se-quences for each of the isolates were obtained from ncbi genbank. morphomet-ric and genetic data were analyzed using cluster analysis, interclass correlation co-efficient (icc) and random effects model. results: one hundred and fourteen sheep (2.5%) were found infected with the coenuri. the minimum and maximum number of scoleces per cyst was 40 and 550 respectively. each scolex contained 22–27 hooks arranged in two rows of large and small hooks. the average total length of the large and small hooks was 158.9 and 112.1 μ m, respectively. using icc, statistically significant clusters of different hook sizes were identified within the isolates. the length of the large and small hooks was significantly associated with the variability in mitochondrial 12s rrna gene. conclusion: taenia multiceps, is a relatively important zoonotic infection in iranian sheep with the prevalence rate of 2.5%. hook length analysis revealed statistically significant difference among individual isolates. associations between the rostellar hook length and variability in the mitochondrial 12s rrna was documented.
منابع مشابه
Morphometric Analysis of Larval Rostellar Hooks in Taenia multiceps of Sheep in Iran and Its Association with Mitochondrial Gene Variability
BACKGROUND The purposes of the present study were morphometric characterization of rostellar hooks of Taenia multiceps and to investigate the association of hook length variation and the variability within two mitochondrial genes of sheep isolates of the parasite. METHODS Up to 4500 sheep brains were examined for the presence of C. cerebralis. Biometric characters based on the larval rostella...
متن کاملthe study of aaag repeat polymorphism in promoter of errg gene and its association with the risk of breast cancer in isfahan region
چکیده: سرطان پستان دومین عامل مرگ مرتبط با سرطان در خانم ها است. از آنجا که سرطان پستان یک تومور وابسته به هورمون است، می تواند توسط وضعیت هورمون های استروئیدی شامل استروژن و پروژسترون تنظیم شود. استروژن نقش مهمی در توسعه و پیشرفت سرطان پستان ایفا می کند و تاثیر خود را روی بیان ژن های هدف از طریق گیرنده های استروژن اعمال می کند. اما گروه دیگری از گیرنده های هسته ای به نام گیرنده های مرتبط به ا...
15 صفحه اولشناسایی مرحله لاروی تنیا هیداتیژنا (سیستی سرکوس تنیو کولیس) بر اساس خصوصیات مرفولوژیکی قلاب های رستلومی
Background and purpose: Taxonomic identification of larval and adult stages of Taenia hydatigena from other Taenia species based on morphometric characteristics of the rostellar hooks in intermediate and definitive host is important in medical and veterinary parasitology. Therefore, this study aimed at identifying the larval stage of Taenia hydatigena (Cysticercus tenuicollis) based on mor...
متن کاملImmunization of sheep against the larval stage of Taenia multiceps.
A trial with 200 ewes and 127 lambs showed that vaccination of lambs with 2 doses of Oncosphere Secretory Antigen (OSA) 4 weeks apart, at either 4-8 and 8-12 weeks or at 12-16 and 16-20 weeks of age, was equally effective in protecting them against infestation with the larval stage of Taenia multiceps. In this trial, the lambs of ewes, vaccinated with OSA when they were 90 and again 120 days pr...
متن کاملthe survey of the virtual higher education in iran and the ways of its development and improvement
این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.
role of cultural iran in promotion of multilaieralism in central asia and caucasus
cultural iran is a scope that is more extended than the political territories of iran as a political unit. this concept means that cultural geography(mehdi moghanlo-1383-1) of iran is greater than its political geography which, according to history, has a long history extending west-east from kandahar to the euphrates and north-south from the persian gulf to the caucasus including transoxiana a...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
iranian journal of parasitologyجلد ۸، شماره ۴، صفحات ۵۷۹-۵۸۵
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023