Results 61 to 70 of about 5,685 (176)

Pathological mechanisms of avian viral oncogenesis: The central role of MicroRNA

Poultry Science
Avian oncogenic viruses represent a major cause of neoplastic and immunosuppressive diseases in poultry, leading to substantial economic losses worldwide and providing valuable models for studying virus-induced tumorigenesis. Among these viruses, Marek’s
Ahmed Fotouh, Rania M. Elbatawy, Ibrahim Eldaghayes, Eman Abd El‑Menamm Shosha   +3 more
doaj   +1 more source

MiR-125b Suppression Inhibits Apoptosis and Negatively Regulates Sema4D in Avian Leukosis Virus-Transformed Cells

Viruses, 2019
Subgroup J avian leukosis virus (ALV-J), an oncogenic retrovirus, causes hemangiomas and myeloid tumors in chickens. We previously showed that miR-125b is down-regulated in ALV-J-induced tumors.
Chaoqi Ren, Ruyu Xie, Yongxiu Yao, Mengmeng Yu, Fangfang Chang, Lixiao Xing, Yao Zhang, Yongzhen Liu, Suyan Wang, Muhammad Farooque, Yongqiang Wang, Xiaole Qi, Changjun Liu, Yanping Zhang, Hongyu Cui, Kai Li, Li Gao, Qing Pan, Venugopal Nair, Xiaomei Wang, Yulong Gao   +20 more
doaj   +1 more source

Rodent models of tumours of the central nervous system

Molecular Oncology, Volume 18, Issue 12, Page 2842-2870, December 2024.
We describe the evolution of experimental systems, illustrated here in a timeline to show changing popularity over time. Starting with chemical and viral carcinogenesis, systems then developed into increasingly sophisticated genetically modified animal models.
Sebastian Brandner
wiley   +1 more source

Naturally Occurring Co-infection of Avian Leukosis Virus (subgroups A-E) and Reticuloendotheliosis Virus in Green Peafowls (Pavo muticus)

Brazilian Journal of Poultry Science
Most of the neoplastic diseases affecting poultry have a viral etiology, such as Marek’s disease, avian leukosis/sarcoma and reticuloendotheliosis. In the present paper, histopathology and molecular methods were performed, in addition of necropsy and ...
M Khordadmehr, M Firouzamandi, M Zehtab-Najafi, R Shahbazi   +3 more
doaj   +1 more source

Pathological and immunohistochemical studies of lymphoid leukosis in pigeons in Egypt

Open Veterinary Journal
Background: Pigeon leukosis is primarily caused by avian leukosis virus subgroup A (ALV-A). It infects and transforms lymphoid cells, leading to the development of tumors in various lymphoid tissues and other organs especially the liver.
Abdelmenem Ahmed Elmeligy, Ali A. Ghania, Ahmed Fotouh   +2 more
doaj   +1 more source

PCR Based Evidence of Reticuloendotheliosis Virus Infection in Chickens from Turkey [PDF]

Pakistan Veterinary Journal, 2011
In this study, presence of avian leukosis virus (ALV) and reticuloendotheliosis virus (REV) was investigated in neoplastic cases observed in breeder hens older than 20 weeks in commercial broiler breeders. Tumor samples were examined by PCR combined with
Hasan Ongor and Hakan Bulut1*
doaj  

Detection of ALV p27 in cloacal swabs and virus isolation medium by sELISA

BMC Veterinary Research, 2019
Background Avian leukosis (AL), which is caused by avian leukosis virus (ALV), has led to substantial economic losses in the poultry industry. The kit used to detect all ALV-positive chickens in breeder flocks is very important for efficiently ...
Xiaoyu Zhou, Lin Wang, Anning Shen, Xi Shen, Moru Xu, Kun Qian, Hongxia Shao, Yongxiu Yao, Venugopal Nair, Jianqiang Ye, Aijian Qin   +10 more
doaj   +1 more source

Application of Immunohistochemistry to Study of Avian Leukosis Virus

Journal of General Virology, 1972
Summary A modification of the peroxidase-labelled antibody technique was applied to study the distribution of virus antigens in chicken cells infected with two serotypes (A and B) of avian leukosis virus (ALV). Type-specific chicken antisera reacted only with cells infected with virus of the homologous envelope serotype. When unfixed cells were exposed
R M, Dougherty, A A, Marucci, H S, Distefano   +2 more
openaire   +2 more sources

Virus or Avian Myeloblastic Leukosis

Poultry Science, 1956
Abstract INTRODUCTION AVIAN leukosis is a complex of diseases which are not only of much economic importance, but which, in addition, comprise one category of virus-induced tumors. As a consequence, knowledge of the diseases is of fundamental interest in its bearing on the problem of cancer as a whole. Since the initial reports of the viral etiology
openaire   +1 more source

Report on Avian Leukosis Conference

Poultry Science, 1966
Abstract A Technical Workshop Conference on Diseases of the Avian Leukosis Complex was held at the University of Georgia, October 12–13, 1965. Participation was restricted to individuals currently engaged in research on avian leukosis. Forty-six papers, dealing with all research approaches to the problem of avian leukosis, were presented. In addition,
openaire   +1 more source