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Rissmann M, Friedrichs V, Kley N, Straube M, Sadeghi B, Balkema-Buschmann A. Baseline of Physiological Body Temperature and Hematological Parameters in Captive Rousettus aegyptiacus and Eidolon helvum Fruit Bats. Front Physiol 2022; 13:910157. [PMID: 36105294 PMCID: PMC9465388 DOI: 10.3389/fphys.2022.910157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 06/16/2022] [Indexed: 11/30/2022] Open
Abstract
The discovery of bats as reservoir hosts for a number of highly pathogenic zoonotic agents has led to an increasing interest of infectious disease research in experimental studies with bats. Therefore, we established breeding colonies of Rousettus aegyptiacus and Eidolon helvum fruit bats, which both have been identified as reservoir hosts for relevant zoonotic disease agents, such as Marburg virus and Lagos bat virus. Since 2013, individuals of both species have been recruited to the Friedrich-Loeffler-Institut (FLI) from zoological gardens in Europe, to where these species had been introduced from the wild several decades ago. The aviaries have been designed according to national recommendations published by the Federal Ministry of Agriculture. Under these conditions, both species have been reproducing for years. To better understand the physiology of these animals, and to generate baseline knowledge for infection experiments, we monitored the body core temperatures of R. aegyptiacus bats in the aviaries, and found a circadian variation between 34°C and 41.5°C. We also determined the hematological parameters of both species, and detected specific differences between both bat species. For values of clinical chemistry, no correlation to age or sex was observed. However, species-specific differences were detected since ALT, BUN and CREA were found to be significantly higher in R. aegyptiacus and GLU and TP were significantly higher in E. helvum bats. A higher hematocrit, hemoglobin and red blood cell level was observed in subadult R. aegyptiacus, with hemoglobin and red blood cells also being significantly increased compared to E. helvum. Lymphocytes were found to be the dominant white blood cells in both species and are higher in female E. helvum. Neutrophil granulocytes were significantly higher in E. helvum bats. This underlines the necessity to define baseline profiles for each bat species prior to their use in experimental challenge.
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Affiliation(s)
- Melanie Rissmann
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Germany
- Department of Viroscience, Erasmus MC, Rotterdam, Netherlands
| | | | - Nils Kley
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Germany
| | - Martin Straube
- Landratsamt Ortenaukreis, Amt für Veterinärwesen und Lebensmittelüberwachung, Offenburg, Germany
| | - Balal Sadeghi
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Germany
| | - Anne Balkema-Buschmann
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Greifswald, Germany
- *Correspondence: Anne Balkema-Buschmann,
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2
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Kemenesi G, Tóth GE, Mayora-Neto M, Scott S, Temperton N, Wright E, Mühlberger E, Hume AJ, Suder EL, Zana B, Boldogh SA, Görföl T, Estók P, Lanszki Z, Somogyi BA, Nagy Á, Pereszlényi CI, Dudás G, Földes F, Kurucz K, Madai M, Zeghbib S, Maes P, Vanmechelen B, Jakab F. Isolation of infectious Lloviu virus from Schreiber's bats in Hungary. Nat Commun 2022; 13:1706. [PMID: 35361761 PMCID: PMC8971391 DOI: 10.1038/s41467-022-29298-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 03/08/2022] [Indexed: 11/09/2022] Open
Abstract
Some filoviruses can be transmitted to humans by zoonotic spillover events from their natural host and filovirus outbreaks have occured with increasing frequency in the last years. The filovirus Lloviu virus (LLOV), was identified in 2002 in Schreiber’s bats (Miniopterus schreibersii) in Spain and was subsequently detected in bats in Hungary. Here we isolate infectious LLOV from the blood of a live sampled Schreiber’s bat in Hungary. The isolate is subsequently sequenced and cultured in the Miniopterus sp. kidney cell line SuBK12-08. It is furthermore able to infect monkey and human cells, suggesting that LLOV might have spillover potential. A multi-year surveillance of LLOV in bats in Hungary detects LLOV RNA in both deceased and live animals as well as in coupled ectoparasites from the families Nycteribiidae and Ixodidae. This correlates with LLOV seropositivity in sampled Schreiber’s bats. Our data support the role of bats, specifically Miniopterus schreibersii as hosts for LLOV in Europe. We suggest that bat-associated parasites might play a role in the natural ecology of filoviruses in temperate climate regions compared to filoviruses in the tropics. Lloviu virus (LLOV) is a filovirus that was first identified in 2002 in Schreiber’s bats in Europe. Here, the authors isolate infectious LLOV from Schreiber’s bats in Hungary and show that it can infect human cells in vitro, suggesting potential for zoonotic events. They furthermore detect LLOV RNA in ectoparasites of sampled bats.
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Affiliation(s)
- Gábor Kemenesi
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary. .,Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary.
| | - Gábor E Tóth
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Martin Mayora-Neto
- Viral Pseudotype Unit, Medway School of Pharmacy, Chatham Maritime, Universities of Kent & Greenwich, Kent, UK
| | - Simon Scott
- Viral Pseudotype Unit, Medway School of Pharmacy, Chatham Maritime, Universities of Kent & Greenwich, Kent, UK
| | - Nigel Temperton
- Viral Pseudotype Unit, Medway School of Pharmacy, Chatham Maritime, Universities of Kent & Greenwich, Kent, UK
| | - Edward Wright
- Viral Pseudotype Unit, School of Life Sciences, University of Sussex, Falmer, Sussex, UK
| | - Elke Mühlberger
- Department of Microbiology, Boston University School of Medicine, Boston, MA, USA
| | - Adam J Hume
- Department of Microbiology, Boston University School of Medicine, Boston, MA, USA
| | - Ellen L Suder
- Department of Microbiology, Boston University School of Medicine, Boston, MA, USA
| | - Brigitta Zana
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | | | - Tamás Görföl
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Péter Estók
- Department of Zoology, Eszterházy Károly University, Eger, Hungary
| | - Zsófia Lanszki
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Balázs A Somogyi
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Ágnes Nagy
- Medical Centre, Hungarian Defence Forces, Budapest, Hungary
| | | | - Gábor Dudás
- Medical Centre, Hungarian Defence Forces, Budapest, Hungary
| | - Fanni Földes
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Kornélia Kurucz
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
| | - Mónika Madai
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Safia Zeghbib
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Piet Maes
- Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium
| | - Bert Vanmechelen
- Leuven, Rega Institute, Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium
| | - Ferenc Jakab
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
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3
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Olivero J, Fa JE, Farfán MÁ, Márquez AL, Real R, Juste FJ, Leendertz SA, Nasi R. Human activities link fruit bat presence to Ebola virus disease outbreaks. Mamm Rev 2019. [DOI: 10.1111/mam.12173] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jesús Olivero
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Julia E. Fa
- Division of Biology and Conservation Ecology Manchester Metropolitan University Manchester M1 6BHUK
- Center for International Forestry Research (CIFOR) Jalan Cifor Rawajaha, Situ Gede, Bogor Barat Kota Bogor Jawa Barat 16115Indonesia
| | - Miguel Á. Farfán
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Ana L. Márquez
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Raimundo Real
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - F. Javier Juste
- Estación Biológica de Doñana CSIC C/ Américo Vespucio, 26, Isla de la Cartuja41092Sevilla Spain
- CIBER de Epidemiología y Salud Pública CIBERESP Spain
| | - Siv A. Leendertz
- Epidemiology of Highly Infectious Microorganisms Robert Koch Institute Seestrasse 1013353Berlin Germany
- Department of Infectious Disease Epidemiology Robert Koch Institute Seestrasse 1013353Berlin Germany
| | - Robert Nasi
- Center for International Forestry Research (CIFOR) Jalan Cifor Rawajaha, Situ Gede, Bogor Barat Kota Bogor Jawa Barat 16115Indonesia
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Balkema-Buschmann A, Rissmann M, Kley N, Ulrich R, Eiden M, Groschup MH. Productive Propagation of Rift Valley Fever Phlebovirus Vaccine Strain MP-12 in Rousettus aegyptiacus Fruit Bats. Viruses 2018; 10:v10120681. [PMID: 30513679 PMCID: PMC6315703 DOI: 10.3390/v10120681] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 12/25/2022] Open
Abstract
Rift Valley fever phlebovirus (RVFV), the causative agent of an emerging zoonotic disease in Africa and Arabia, can infect a variety of species, predominantly ruminants, camelids, and humans. While clinical symptoms are mostly absent in adult ruminants and camelids, RVFV infection may lead to a serious, sometimes fatal disease in humans. Virus transmissions between individuals and between species mainly occur through mosquito bites, but direct or even indirect contact with infectious materials may also result in infection. Although the main reservoir of the virus is not yet identified, small mammals such as rodents and bats may act as amplifying hosts. We therefore inoculated Rousettus aegyptiacus fruit bats that are abundant in northern Africa with the vaccine strain MP-12, in order to elucidate the general competence of this species for virus propagation and transmission. We were able to detect the RVFV genome in the spleen of each of these animals, and re-isolated the virus from the spleen and liver of some animals. Moreover, we were able to identify the Gc RVFV surface antigen in mild subacute multifocal necrotizing hepatic lesions of one bat which was sacrificed 7 days post exposure. These findings demonstrate that Rousettus aegyptiacus fruit bats can propagate RVFV.
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Affiliation(s)
- Anne Balkema-Buschmann
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany.
| | - Melanie Rissmann
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany.
| | - Nils Kley
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany.
| | - Reiner Ulrich
- ²Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald-Insel Riems, Germany.
| | - Martin Eiden
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany.
| | - Martin H Groschup
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, 17493 Greifswald-Insel Riems, Germany.
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5
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Hayman DTS, Luis AD, Restif O, Baker KS, Fooks AR, Leach C, Horton DL, Suu-Ire R, Cunningham AA, Wood JLN, Webb CT. Maternal antibody and the maintenance of a lyssavirus in populations of seasonally breeding African bats. PLoS One 2018; 13:e0198563. [PMID: 29894488 PMCID: PMC5997331 DOI: 10.1371/journal.pone.0198563] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 05/18/2018] [Indexed: 12/24/2022] Open
Abstract
Pathogens causing acute disease and death or lasting immunity require specific spatial or temporal processes to persist in populations. Host traits, such as maternally-derived antibody (MDA) and seasonal birthing affect infection maintenance within populations. Our study objective is to understand how viral and host traits lead to population level infection persistence when the infection can be fatal. We collected data on African fruit bats and a rabies-related virus, Lagos bat virus (LBV), including through captive studies. We incorporate these data into a mechanistic model of LBV transmission to determine how host traits, including MDA and seasonal birthing, and viral traits, such as incubation periods, interact to allow fatal viruses to persist within bat populations. Captive bat studies supported MDA presence estimated from field data. Captive bat infection-derived antibody decayed more slowly than MDA, and while faster than estimates from the field, supports field data that suggest antibody persistence may be lifelong. Unobserved parameters were estimated by particle filtering and suggest only a small proportion of bats die of disease. Pathogen persistence in the population is sensitive to this proportion, along with MDA duration and incubation period. Our analyses suggest MDA produced bats and prolonged virus incubation periods allow viral maintenance in adverse conditions, such as a lethal pathogen or strongly seasonal resource availability for the pathogen in the form of seasonally pulsed birthing.
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Affiliation(s)
- David T. S. Hayman
- Molecular Epidemiology and Public Health Laboratory (EpiLab), Infectious Disease Research Centre, Hopkirk Research Institute, Massey University, Palmerston North, New Zealand
| | - Angela D. Luis
- Department of Ecosystem and Conservation Sciences, University of Montana, Missoula, Montana, Montana, United States of America
| | - Olivier Restif
- Disease Dynamics Unit, Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Kate S. Baker
- Institute for Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Anthony R. Fooks
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency (APHA), New Haw, Surrey, United Kingdom
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
| | - Clint Leach
- Department of Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Daniel L. Horton
- School of Veterinary Medicine, University of Surrey, Guildford, Surrey, United Kingdom
| | | | - Andrew A. Cunningham
- Institute of Zoology, Zoological Society of London, Regent’s Park, London, United Kingdom
| | - James L. N. Wood
- Disease Dynamics Unit, Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Colleen T. Webb
- Department of Biology, Colorado State University, Fort Collins, Colorado, United States of America
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Bat Astroviruses: Towards Understanding the Transmission Dynamics of a Neglected Virus Family. Viruses 2017; 9:v9020034. [PMID: 28230787 PMCID: PMC5332953 DOI: 10.3390/v9020034] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 02/14/2017] [Accepted: 02/16/2017] [Indexed: 01/11/2023] Open
Abstract
Bats belong to the order Chiroptera that represents the second largest order of mammals with more than 1200 species and an almost global distribution. Environmental changes and deforestation have severely influenced many ecosystems, intensifying the contact between wildlife and humans. In recent years, bats have been found to harbor a number of different viruses with zoonotic potential, as well as a great diversity of astroviruses, for which the question of zoonotic potential remains unanswered to date. Human astroviruses have been identified as the causative agent for diarrhea in children and immunocompromised patients. For a long time, astroviruses have been considered to be strictly species-specific. However, a great genetic diversity has recently been discovered among animal and human astroviruses that might indicate the potential of these viruses to cross species barriers. Furthermore, our knowledge about the tissue tropism of astroviruses has been expanded to some neurotropic strains that have recently been shown to be responsible for encephalitis in humans and livestock. This review gives an overview on what is known about astroviruses in bats, humans and livestock, especially bovines and pigs. Future research activities are suggested to unravel astrovirus infection dynamics in bat populations to further assess the zoonotic potential of these viruses.
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