Publication: Dissecting the localization of Tilapia tilapinevirus in the brain of the experimentally infected Nile tilapia, Oreochromis niloticus (L.)
Issued Date
2021-08-01
Resource Type
ISSN
13652761
01407775
01407775
Other identifier(s)
2-s2.0-85102519357
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Fish Diseases. Vol.44, No.8 (2021), 1053-1064
Suggested Citation
Nguyen Dinh-Hung, Pattiya Sangpo, Thanapong Kruangkum, Pattanapon Kayansamruaj, Tilladit Rung-ruangkijkrai, Saengchan Senapin, Channarong Rodkhum, Ha Thanh Dong Dissecting the localization of Tilapia tilapinevirus in the brain of the experimentally infected Nile tilapia, Oreochromis niloticus (L.). Journal of Fish Diseases. Vol.44, No.8 (2021), 1053-1064. doi:10.1111/jfd.13367 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/75620
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Title
Dissecting the localization of Tilapia tilapinevirus in the brain of the experimentally infected Nile tilapia, Oreochromis niloticus (L.)
Abstract
Tilapia tilapinevirus or tilapia lake virus (TiLV) is an emerging virus that inflicts significant mortality on farmed tilapia globally. Previous studies reported detection of the virus in multiple organs of the infected fish; however, little is known about the in-depth localization of the virus in the central nervous system. Herein, we determined the distribution of TiLV in the entire brain of experimentally infected Nile tilapia. In situ hybridization (ISH) using TiLV-specific probes revealed that the virus was broadly distributed throughout the brain. The strongest positive signals were dominantly detected in the forebrain (responsible for learning, appetitive behaviour and attention) and the hindbrain (involved in controlling locomotion and basal physiology). The permissive cell zones for viral infection were observed mostly to be along the blood vessels and the ventricles. This indicates that the virus may productively enter into the brain through the circulatory system and widen broad regions, possibly through the cerebrospinal fluid along the ventricles, and subsequently induce the brain dysfunction. Understanding the pattern of viral localization in the brain may help elucidate the neurological disorders of the diseased fish. This study revealed the distribution of TiLV in the whole infected brain, providing new insights into fish–virus interactions and neuropathogenesis.