Abstract
Human infections with highly pathogenic avian influenza (HPAI) H5N1 have been associated with central nervous system involvement. The purpose of this study was to examine the route of invasion of wild-type HPAI H5N1 virus into the central nervous system (CNS) using a ferret model of infection. Sixteen ferrets were exposed by the intranasal route to 106 TCID50 of A/Vietnam/1203/04, a Clade 1 strain originally isolated from a fatal human case. The ferrets were euthanased for histological and virological analysis at intervals after challenge at 1, 3, 5, 6 and 7 days post-inoculation (dpi). From 5 dpi encephalitis was seen in all examined ferrets. The detection of antigen in the olfactory epithelium, the olfactory bulb, and related nuclei, in that temporal sequence, supported the contention that this is a major infection route for this virus strain. The detection of antigen in the epithelial cells in the Eustachian tube on 1 dpi, followed by the cochlea and vestibulocochlear nerve on 5 dpi is consistent with a second anterograde route of invasion, namely the vestibulocochlear pathway. There was also antigen in the lining of the ventricles and central canal indicating spread via the cerebrospinal fluid. However, evidence for haematogenous dissemination in the form of antigen in the brain parenchyma surrounding blood vessels was not found. This study provides support to the contention that wild-type HPAI H5N1 virus strains may enter the CNS via cranial nerve pathways and that the ferret is an appropriate model to study preventive and therapeutic procedures involving neural infection with these viruses by this route.
Similar content being viewed by others
References
Allen Brain Atlas (2001) Mouse brain. Allen reference atlas. http://mouse.brain-map.org/static/atlas
Angelucci A, Clascá F, Sur M (1998) Brainstem inputs to the ferret medial geniculate nucleus and the effect of early deafferentation on novel retinal projections to the auditory thalamus. J Comp Neurol 400:417–439
Bingham J, Green DJ, Lowther S et al (2009) Infection studies with two highly pathogenic avian influenza strains (Vietnamese and Indonesian) in Pekin ducks (Anas platyrhynchos), with particular reference to clinical disease, tissue tropism and viral shedding. Avian Pathol 38:267–278
Bodewes R, Kreijtz JH, van Amerongen G et al (2011) Pathogenesis of Influenza A/H5N1 virus infection in ferrets differs between intranasal and intratracheal routes of inoculation. Am J Pathol 179:30–36
Boltz DA, Rehg JE, McClaren J, Webster RG, Govorkova EA (2008) Oseltamivir prophylactic regimens prevent H5N1 influenza morbidity and mortality in a ferret model. J Infect Dis 197:1315–1323
Buchy P, Mardy S, Vong S et al (2007) Influenza A/H5N1 virus infection in humans in Cambodia. J Clin Virol 39:164–168
Chutinimitkul S, Payungporn S, Chieochansin T et al (2006) The spread of avian influenza H5N1 virus: a pandemic threat to mankind. J Med Assoc Thai 3:S218–S233
Davis LE (1982) Experimental viral infection of the inner ear. III. Viremic spread of reovirus to hamster eighth nerve ganglion cells. Ann Otol Rhinol Laryngol 91:90–95
Davis LE, Johnson LG (1983) Viral infections of the inner ear: clinical, virologic and pathologic studies in humans and animals. Am J Otol 4:347–362
de Jong MD, Bach VC, Phan TQ et al (2005) Fatal avian influenza A (H5N1) in a child presenting with diarrhea followed by coma. N Engl J Med 352:686–691
de Jong MD, Hien TT (2006) Avian influenza A (H5N1). J Clin Virol 35:2–13
Falser N, Bandtlow I, Haus M, Wolf H (1986) Detection of pseudorabies virus DNA in the inner ear of intranasally infected BALB/c mice with nucleic acid hybridization in situ. J Virol 57:335–339
Falser N, Bandtlow I, Rziha HJ, Haus M, Wolf H (1987) The role of acute and latent virus infections in the pathogenesis of inner ear disturbances. Am J Otol 8:136–147
Gambotto A, Barratt-Boyes SM, de Jong MD, Neumann G, Kawaoka Y (2008) Human infection with highly pathogenic H5N1 influenza virus. Lancet 371:1464–1475
Govorkova EA, Ilyushina NA, Boltz DA, Douglas A, Yilmaz N, Webster RG (2007) Efficacy of oseltamivir therapy in ferrets inoculated with different clades of H5N1 influenza virus. Antimicrob Agents Chemother 51:1414–1424
Govorkova EA, Rehg JE, Krauss S et al (2005) Lethality to ferrets of H5N1 influenza viruses isolated from humans and poultry. J Virol 79:2191–2198
Gu J, Xie Z, Gao Z et al (2007) H5N1 infection of the respiratory tract and beyond: a molecular pathology study. Lancet 370:1137–1145
Johnston M, Zakharov A, Papaiconomou C et al (2004) Evidence of connections between cerebrospinal fluid and nasal lymphatic vessels in humans, non-human primates and other mammalian species. Cerebrospinal Fluid Res 1:2
Karmody CS (1983) Viral labyrinthitis: early pathology in the human. Laryngoscope 93:1527–1533
Korteweg C, Gu J (2008) Pathology, molecular biology, and pathogenesis of avian influenza A (H5N1) infection in humans. Am J Pathol 172:1155–1170
Kristensson K (2006) Avian influenza and the brain—comments on the occasion of resurrection of the Spanish flu virus. Brain Res Bull 68:406–413
Lindsay J, Davey P, Ward R (1960) Inner ear pathology in deafness due to mumps. Ann Otol Rhinol Laryngol 69:918–927
Lindsay J, Hemenway W (1954) Inner ear pathology due to measles. Ann Otol Rhinol Laryngol 63:754–763
Maher JA, DeStefano J (2004) The ferret: an animal model to study influenza virus. Lab Anim (NY) 33:50–53
Maines TR, Lu XH, Erb SM et al (2005) Avian influenza (H5N1) viruses isolated from humans in Asia in 2004 exhibit increased virulence in mammals. J Virol 79:11788–11800
Matsuda K, Park CH, Sunden Y et al (2004) The vagus nerve is one route of transneural invasion for intranasally inoculated influenza a virus in mice. Vet Pathol 41:101–107
Middleton D, Rockman S, Pearse M et al (2009) Evaluation of vaccines for H5N1 influenza virus in ferrets reveals the potential for protective single-shot immunization. J Virol 83:7770–7778
Park CH, Ishinaka M, Takada A et al (2002) The invasion routes of neurovirulent A/Hong Kong/483/97 (H5N1) influenza virus into the central nervous system after respiratory infection in mice. Arch Virol 147:1425–1436
Peiris JS, Yu WC, Leung CW et al (2004) Re-emergence of fatal human influenza A subtype H5N1 disease. Lancet 363:617–619
Rimmelzwaan GF, van Riel D, Baars M et al (2006) Influenza A virus (H5N1) infection in cats causes systemic disease with potential novel routes of virus spread within and between hosts. Am J Pathol 168:176–183
Schrauwen EJ, Herfst S, Leijten LM et al (2012) The multi basic cleavage site in H5N1 virus is critical for systemic spread along the olfactory and hematogenous routes in ferrets. J Virol 86:3975–3984
Shinya K, Makino A, Hatta M et al (2011) Subclinical brain injury caused by H5N1 influenza virus infection. J Virol 85:5202–5207
Shinya K, Shimada A, Ito T et al (2000) Avian influenza virus intranasally inoculated infects the central nervous system of mice through the general visceral afferent nerve. Arch Virol 145:187–195
Small PA Jr, Waldman RH, Bruno JC et al (1976) Influenza infection in ferrets: role of serum antibody in protection and recovery. Infect Immun 13:417–424
Tanaka H, Park CH, Ninomiya A et al (2003) Neurotropism of the 1997 Hong Kong H5N1 influenza virus in mice. Vet Microbiol 95:1–13
Thanh TT, van Doon HR, de Jong MD (2008) Human H5N1 influenza: current insight into pathogenesis. Int J Biochem Cell Biol 40:2671–2674
To K-F, Chan PKS, Chan K-F et al (2001) Pathology of fatal human infection associated with avian influenza A H5N1 virus. J Med Virol 63:242–246
Tsubota M, Shojaku H, Ishimaru H et al (2008) Mumps virus may damage the vestibular nerve as well as the inner ear. Acta Otolaryngol 128:644–647
Uiprasertkul M, Puthavathana P, Sangsiriwut K et al (2005) Influenza A H5N1 replication sites in humans. Emerg Infect Dis 11:1036–1041
Uyeki TM (2009) Human infection with highly pathogenic avian influenza A (H5N1) virus: review of clinical issues. Clin Infect Dis 49:279–290
Wetmore CA, Pickard EH, Stern H (1979) Isolation of mumps virus from the inner ear after sudden deafness. Br Med J 655:14–15
WHO (2009) Cumulative number of confirmed human cases of avian influenza A/(H5N1) reported to WHO. http://www.who.int/csr/disease/avian_influenza/country/cases_table_2009_06_02/en/index.html. Accessed 12 June 2009
Yen HL, Lipatov AS, Ilyushina NA et al (2007) Inefficient transmission of H5N1 influenza viruses in a ferret contact model. J Virol 81:6890–6898
Yuen KY, Chan PK, Peiris M et al (1998) Clinical features and rapid viral diagnosis of human disease associated with avian influenza A H5N1 virus. Lancet 351:467–471
Yun NE, Linde NS, Zacks MA et al (2008) Injectable peramivir mitigates disease and promotes survival in ferrets and mice infected with the highly virulent influenza virus, A/Vietnam/1203/04 (H5N1). Virology 374:198–209
Zitzow LA, Rowe T, Morken T, Shieh WJ, Zaki S, Katz JM (2002) Pathogenesis of avian influenza A (H5N1) viruses in ferrets. J Virol 76:4420–4429
Acknowledgments
This work was supported in part by a visiting fellowship program of National Agriculture and Food Research Organization (NARO), Japan. The work was conducted in the laboratories of CSIRO Livestock Industries at the Australian Animal Health Laboratory, Geelong, Victoria.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yamada, M., Bingham, J., Payne, J. et al. Multiple routes of invasion of wild-type Clade 1 highly pathogenic avian influenza H5N1 virus into the central nervous system (CNS) after intranasal exposure in ferrets. Acta Neuropathol 124, 505–516 (2012). https://doi.org/10.1007/s00401-012-1010-8
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00401-012-1010-8