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متن کامل


مرکز اطلاعات علمی SID1
مرکز اطلاعات علمی SID
اسکوپوس
مرکز اطلاعات علمی SID
ریسرچگیت
strs
اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    0
  • شماره: 

    19
تعامل: 
  • بازدید: 

    2520
  • دانلود: 

    0
چکیده: 

BACKGROUND AND OBJECTIVE(S): tick-borne encephalitis (TBE) VIRUS CAUSES ONE OF THE MOST IMPORTANT FLAVIVIRAL INFECTIONS OF THE HUMAN CENTRAL NERVOUS SYSTEM IN EUROPE AND SOME AREAS OF ASIA AND BALTIC COUNTRIES. TBE VIRUS (TBEV) IS MAINLY TRANSMITTED BY tick BITES AND IN SOME CASES BY UNPASTEURIZED MILK. IN RECENT YEARS, THE RATE OF TBE INFECTION HAS INCREASED BECAUSE THE VIRUS HAS BEEN SPREADING TO NEW AREAS BY MIGRATION OF BIRDS. ...

آمار یکساله:  

بازدید 2520

دانلود 0
اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    15
  • شماره: 

    1
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    19687
  • دانلود: 

    21460
چکیده: 

Background: tick-borne encephalitis virus (TBEV) is a neurotropic tick-borne virus circulating in vast geographical areas of the northern hemisphere. Although the presence of TBEV vector has been documented in north Iran, there is no information about the circulation of TBEV in the country. Objectives: This study was designed in order to determinate the TBE serologic profile in the Mazandaran Province of Iran. Methods: In this cross-sectional seroepidemiologic study, from September to November 2018, 448 serum samples collected (by random sampling method) from general population residing in rural areas of Behshar, Galugah, Miandorud and Neka cities were evaluated for presence of anti TBEV IgG antibodies using a commercial Anti-TBE Virus ELISA (IgG) kit. Results: Sixteen (3. 6%) samples were detected as reactive, in which 43. 8% had a history of tick bite or tick squish. The highest seropositivity was observed in farming/animal industry-related jobs (33. 3%) or were housewives (33. 3%). All reactive cases reported a history of consuming local unpasteurized dairy. Conclusions: This study provides first evidence on the circulation of TBEV in Northern Iran, where climatic conditions, presence of Ixodes ticks, and variability of mammalian hosts might contribute to TBEV establishment. Overarching investigations on tick vectors, animals, and human population would be recommended to shed light on the epidemiology of the virus in this region.

آمار یکساله:  

بازدید 19687

دانلود 21460 استناد 0 مرجع 0
اطلاعات دوره: 
  • سال: 

    1384
  • دوره: 

    0
  • شماره: 

    4
تعامل: 
  • بازدید: 

    74
  • دانلود: 

    8
چکیده: 

لطفا برای مشاهده چکیده به متن کامل (PDF) مراجعه فرمایید.

آمار یکساله:  

بازدید 74

دانلود 8
گارگاه ها آموزشی
نویسندگان: 

DINC GOKCEN | DEMIRASLAN HAYATI | DOGANAY MEHMET

اطلاعات دوره: 
  • سال: 

    2017
  • دوره: 

    5
  • شماره: 

    1
  • صفحات: 

    5-13
تعامل: 
  • استنادات: 

    383
  • بازدید: 

    15197
  • دانلود: 

    12311
چکیده: 

Introduction: Camping and hiking are popular worldwide recreational activities. All age groups, elderly or young, immunocompetent or immunosupressive people may engage in these activities. During these activities, individuals may get injured or be exposed to pathogens. There is also a strong possibility of experiencing mosquito, lice, or tick bites, bee stings, or being bitten by scorpions, snakes, rodents, wild or feral animals. This study reviewed the current literature regarding tick-borne infections encountered during recreational activities.Methods: PubMed and the Web of Science databases were searched for the keywords “campers,” “hikers,” and “tick borne infections.” Major reviews, research papers, and case series on campers and hikers were reviewed, and current articles for tick-borne infections were selected and summarized.Results: People who engage in recreational activities are potentially at risk for infection from environmental sources. A group of important vector-borne diseases is tick-borne infections, the major agents of which are Babesia spp., Borrelia spp., Rickettsia spp., Ehrlichia spp., Francisella tularensis, Coxiella burnetii, Crimen-Congo hemorrhagic fever (CCHF), and tick-borne encephalitis (TBE) viruses. These infections have a widespread geographical distribution.Conclusion: Participating in outdoor recreational activities is increasing all over the world. While partaking in these activities, humans are frequently exposed to ticks and are potentially at risk for infection. To prevent infection, public and medical awareness is necessary.

آمار یکساله:  

بازدید 15197

دانلود 12311 استناد 383 مرجع 0
نویسندگان: 

اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    5
  • شماره: 

    1
  • صفحات: 

    1-3
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    0
  • دانلود: 

    54
کلیدواژه: 
چکیده: 

آمار یکساله:  

بازدید 0

دانلود 54 استناد 1 مرجع 0
اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    15
  • شماره: 

    12
  • صفحات: 

    17-22
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    13328
  • دانلود: 

    10183
چکیده: 

Background: tick-borne diseases are of the most important diseases in the world including Iran. This survey was conducted to understand the eco-epidemiology of tick-borne hemoparasitic diseases in Qazvin province, Iran, using Geospatial Information System (GIS).Materials and Methods: DNA samples were extracted from livestock blood samples collected from different regions of Qazvin province.18S rRNA-based PCR targeted Theileria/ Babesia species were done. Initial parameters for mapping the local tick-borne hemoparasitic diseases and raster files were obtained from Iran Meteorological Organization and Iranian Space Agency. Mapping of the parameters in relation to prevalence of these diseases were done. Statistical analysis was used for weighting parameters ranking and predicting spatial distribution in different climatic zones.Results: Vapor pressure, precipitation, and altitude are of several environmental factors correlated with tick abundances. Based on the generated maps and the results of this survey, some predicting results could be used for predicting tick-borne diseases and their control.9.7% of ruminant blood samples (N=16) were infected with protozoa pathogens from the genera Theileria and all of the specimens were negative regarding to Babesia genera.Conclusion: Results showed that prediction of a very high prevalence of Theileria/ Babesia species and mapping endangered area is possible in different parts of Iran. Based on the environmental conditions, key factors exist for host-seeking and range expansion of ticks.

آمار یکساله:  

بازدید 13328

دانلود 10183 استناد 0 مرجع 0
strs
نویسندگان: 

POULADFAR GH.R. | ALBORZI A. | POURABBAS B.

اطلاعات دوره: 
  • سال: 

    2008
  • دوره: 

    33
  • شماره: 

    3
  • صفحات: 

    177-179
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    20107
  • دانلود: 

    8634
چکیده: 

tick-borne relapsing fever is an endemic disease in some parts of Iran. Borellia persica, the most common cause of this disease in Iran, has a wide geographic distribution and is present in Alborz and Zagros mountain chains. Here we report a 16–year-old male patient who presented with two episodes of fever within 15 days. He had a history of few overnight stays in a cave of mountainous area in Fars province. Sites of tick bites were found on exposed areas of extremities. Spirochetes were detected in Wright-stained smears of the patient's peripheral blood. He was successfully treated with penicillin. To the best of our knowledge, there has been no reported case of tick-borne relapsing fever from Fars province in the literature during the last 28 years. tick-borne relapsing fever should be considered in patients with recurrent fever and peripheral blood smear should be investigated for spirochetes. Further seroepidemiologic studies should be carried out to determine the prevalence of this disease in Fars province.

آمار یکساله:  

بازدید 20107

دانلود 8634 استناد 0 مرجع 0
اطلاعات دوره: 
  • سال: 

    1384
  • دوره: 

    9
  • شماره: 

    11
  • صفحات: 

    5-15
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    713
  • دانلود: 

    20
چکیده: 

هدف از این مطالعه تحقیق پیرامون بیماری ناشناخته ای بود که با آن هنگام پرورش نوزادان کنه بوئوفیلوس آنولاتوس برگرفته از استان مازندران روی یک راس گوساله هلشتاین برخورد شد. تعداد هفت راس گوساله عادی هلشتاین ایرانی سه تا شش ماهه (دام های آزمایش)، 20 راس گوساله هلشتاین با گروه سنی مشابه و 30 راس گاو هلشتاین (دام های شاهد مزرعه) بدون سابقه آلودگی به کنه انتخاب شدند. در مرحله اول، گوساله های شماره 1، 2، 3 و 4 با استفاده از نوزادان کنه بوئوفیلوس آنولاتوس به طور تجربی آلوده شدند. سپس خون گوساله های بیمار شده 3 و 4، در اوج تب، به ترتیب به گوساله های 5 و 6 که در مرحله اول بیمار نشده بودند، از راه درون سیاه رگی تزریق شد. معاینه بالینی، بررسی خون محیطی، شمارش کامل یاخته های خونی، کشت میکربی خون گوساله ها و درمان با چند نوع دارو ضد باکتریایی صورت پذیرفت. علایم بالینی بیماری در چهار تا ده روز پس از آلودگی در هر هفت گوساله به جز گوساله شماره 7 (شاهد) بروز کرد. تب شدید، کم خونی سریعا پیشرونده، لوکوپنی و نوتروپنی در دام های بیمار ثبت گردید. بیماران به سرعت به تجویز سولفانامید+تری متوپریم پاسخ دادند. ظهور عوامل میله ای و مورولایی شکل بسیار مشابه با آناپلاسما فاگوسیتوفیلا در سیتوپلاسم نوتروفیل ها و نیز منوسیت ها در اوج تب و ناپدید شدن آنها فقط پس از تجویز سولفانامید+تری متوپریم تنها یافته سبب شناختی مطالعه بود. این مطالعه نشان داد عامل بیماری تب ناشی از گزش کنه در گاوهای استان مازندران وجود دارد و کنه بوئوفیلوس آنولاتوس ناقل آن است. جرم عامل از طریق تخم کنه انتقال می یابد. ویژگی های همه گیری شناختی، بالینی و آزمایشگاهی این بیماری با بیماری ناشی از آناپلاسما فاگوسیتوفیلا کاملا مشابه است. برای تایید قطعی این تشخیص باید مطالعات تکمیلی سرم شناختی و خصوصا زیست شناسی مولکولی صورت پذیرد.

آمار یکساله:  

بازدید 713

دانلود 20 استناد 0 مرجع 0
اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    3
  • شماره: 

    1
  • صفحات: 

    1-11
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    21912
  • دانلود: 

    9479
چکیده: 

The family, Flaviviridae includes viruses which cause several diseases including Dengue fever, Japanese encephalitis, Murray Valley encephalitis, tick-borne encephalitis, West Nile encephalitis, Yellow fever and Hepatitis C virus infection. Members of this family have monopartite, linear, single-stranded RNA genomes of positive polarity with 9.6-12.3 kb in length. Here, we analyzed the codon usage of 13 species of this family by using gene infinity package. Base analysis was performed by CAIcal server and amino acid composition was calculated by PseAAC web-server. The results showed that the highest number of A, G and C bases were seen in the RNA genome of Dengue virus 2, tick borne encephalitis virus and Hepatitis C virus, respectively.Although the number of U bases used in RNA genomes was very close, the highest U nucleotide amount was 23.77% in Wesselsbron virus. The lowest number of C, G, U and A bases was seen in Bovine viral diarrhea virus, Dengue virus 2, tick borne encephalitis virus and Hepatitis C virus, respectively. In this study, it was found that the complete genome of classical swine fever virus has a lower GC content and genome of tick borne encephalitis virus, Hepatitis C virus and Powassan virus have the highest GC content among other examined species. We also classified the amino acids as rare (Phenylalanine, Cysteine, Histidine, Methionine, Asparagine, Glutamine, Tryptophan and Tyrosine), frequent (Alanine, Glutamic acid, Glycine, Leucine, Valine and Threonine), and intermediate (all others). The highest numbers of preferred codons exist in Wesselsbron virus and the lowest in West Nile virus.

آمار یکساله:  

بازدید 21912

دانلود 9479 استناد 0 مرجع 0
اطلاعات دوره: 
  • سال: 

    2021
  • دوره: 

    15
  • شماره: 

    3
  • صفحات: 

    265-277
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    59
  • دانلود: 

    44
چکیده: 

Background: Zoonotic diseases as health concerns worldwide account for more than half of the emerging infectious diseases. Arachnids are powerful vectors to transmit several diseases to humans. Additionally, these emerging zoonotic diseases have been a considerable health threat in the Eastern Mediterranean Region of the WHO (EMRO) due to the large population living close to farms and international trade with nearby countries. Methods: This review study is based on the reported three tick-borne diseases, Lyme disease, Tularemia, and Q fever, from Iran and other EMRO countries. To this end, we searched PubMed central, ISI web of Science, and Google with the related keywords in English at any time. The reported data are then sorted by countries for each disease. Results: According to the published data, 15 countries in the region have one/more emerging infectious diseases. Q fever has been the most frequent infection in EMRO countries, while Lyme was less recorded. Furthermore, Iran is among the countries with documented history of all three investigated diseases. Conclusion: tick-borne disease is popular among EMRO countries, indicating that they have natural conditions for infections in animals and humans. It appears necessary to develop a disease management strategy and control programs against tick-borne diseases (TBDs). Moreover, the disease-resistant animal could be bred instead of susceptible livestock. Therefore, research studies to control TBDs should be regarded as a top priority plan.

آمار یکساله:  

بازدید 59

دانلود 44 استناد 0 مرجع 0
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