نتایج جستجو برای: ویروس بیماری نیوکاسل ndv
تعداد نتایج: 47713 فیلتر نتایج به سال:
Newcastle disease virus (NDV) causes a severe and economically significant disease affecting almost the entire poultry industry worldwide. However, factors that affect NDV replication in host cells are poorly understood. Raf kinase inhibitory protein (RKIP) is a physiological inhibitor of c-RAF kinase and NF-κB signalling, known for their functions in the control of immune response as well as t...
محمد مهدی غفاری هدف: تهیه پادتن اختصاصی کنژوگه با فلئورسئین ایزوتیوسیانات جهت تفکیک سویه های حاد ویروس نیوکاسل از سویه های واکسن زنده. طرح: مطالعه تجربی. حیوانات: 28 رأس خرگوش. روش: پس از تکثیر 4 سویه حاد و دو سویه واکسینال B1 و لاسوتا در تخم مرغ جنین دار اقدام به خالص سازی نمونه ها به روش اولترا سانتریفیوژ گردید. ویروس های خالص شده جهت تهیه آنتی سرم فوق ایمن‘ به تفکیک به 7 گروه 4 ت...
Highly pathogenic avian influenza virus (HPAIV) and Newcastle disease virus (NDV) are two of the most important viruses affecting poultry worldwide and produce co-infections especially in areas of the world where both viruses are endemic; but little is known about the interactions between these two viruses. The objective of this study was to determine if co-infection with NDV affects HPAIV repl...
Newcastle disease is highly pathogenic to poultry and many other avian species. However, the Newcastle disease virus (NDV) has also been reported from many non-avian species. The NDV fusion protein (F) is a major determinant of its pathogenicity and virulence. The functionalities of F gene have been explored for the development of vaccine and diagnostics against NDV. Although the F protein is w...
Recent reports suggest promises on using oncolytic Newcastle disease viruses (NDV) to treat different cancers, while the effects of a NDV-D90 strain on gastric cancer remain unknown. Here we showed that NDV-D90 induced gastric cancer cell apoptosis in a dose-dependent manner in 3 gastric cancer cell lines BGC-823, SGC-7901 and MKN-28. Pronounced reduction in cell invasion was detected in NDV-D9...
In this study, we investigated the role of autophagy and apoptosis in Newcastle disease virus (NDV)-infected chicken cells and tissues. NDV-infected and starvation-induced chick embryo fibroblasts (CEF) cells showed higher autophagosome formation than mock-infected CEF cells on transmission electron microscopy. The NDV-infected CEF cells showed enhanced conversion of microtubule-associated prot...
Since the discovery of Newcastle disease virus (NDV) in 1926, nine genotypes of class I viruses and ten of class II have been identified, representing a diverse and continually evolving group of viruses. The emergence of new virulent genotypes from global epizootics and the year-to-year changes observed in the genomic sequence of NDV of low and high virulence implies that distinct genotypes of ...
This study aimed to investigate the immunogenicity of Newcastle disease virus (NDV) in specificpathogen-free (SPF) chickens. The NDV was inactivated using either Binary ethyleneimine (BEI) or Electrolysed water-Catholyte-Anolyte (ECA). Complete inactivation of NDV occurred after 24 hours with either BEI or ECA. Prepared inactivated NDV vaccines were tested for their efficiency in generating hum...
BACKGROUND/AIMS Newcastle disease virus (NDV) is an avian paramyxovirus that has gained a lot of interest in cancer viro-therapeutic applications because of its ability to selectively induce apoptosis in human cancer cells. However, the underlying mechanisms by which NDV induces apoptosis in human cancer cells are still not entirely understood. METHODS In this study we examined the effect of ...
Circulation of genotype VII Newcastle disease virus (NDV) has posed a great threat for the poultry industry worldwide. Antibodies against Hemagglutinin-neuraminidase (HN), a membrane protein of NDV with critical roles in NDV infection, have been reported to provide chickens protection from NDV infection. In this study, we comprehensively analyzed the in vivo antibody responses against the linea...
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