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Busignies V, Simon G, Mollereau G, Bourry O, Mazel V, Rosa-Calatrava M, Tchoreloff P. Development and pre-clinical evaluation in the swine model of a mucosal vaccine tablet for human influenza viruses: A proof-of-concept study. Int J Pharm 2018; 538:87-96. [DOI: 10.1016/j.ijpharm.2018.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/09/2018] [Accepted: 01/12/2018] [Indexed: 01/09/2023]
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Renson P, Fablet C, Le Dimna M, Mahé S, Touzain F, Blanchard Y, Paboeuf F, Rose N, Bourry O. Preparation for emergence of an Eastern European porcine reproductive and respiratory syndrome virus (PRRSV) strain in Western Europe: Immunization with modified live virus vaccines or a field strain confers partial protection. Vet Microbiol 2017; 204:133-140. [PMID: 28532792 DOI: 10.1016/j.vetmic.2017.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/18/2017] [Accepted: 04/21/2017] [Indexed: 01/27/2023]
Abstract
The porcine reproductive and respiratory syndrome virus (PRRSV) causes huge economic losses for the swine industry worldwide. In the past several years, highly pathogenic strains that lead to even greater losses have emerged. For the Western European swine industry, one threat is the possible introduction of Eastern European PRRSV strains (example Lena genotype 1.3) which were shown to be more virulent than common Western resident strains under experimental conditions. To prepare for the possible emergence of this strain in Western Europe, we immunized piglets with a Western European PRRSV field strain (Finistere: Fini, genotype 1.1), a new genotype 1 commercial modified live virus (MLV) vaccine (MLV1) or a genotype 2 commercial MLV vaccine (MLV2) to evaluate and compare the level of protection that these strains conferred upon challenge with the Lena strain 4 weeks later. Results show that immunization with Fini, MLV1 or MLV2 strains shortened the Lena-induced hyperthermia. In the Fini group, a positive effect was also demonstrated in growth performance. The level of Lena viremia was reduced for all immunized groups (significantly so for Fini and MLV2). This reduction in Lena viremia was correlated with the level of Lena-specific IFNγ-secreting cells. In conclusion, we showed that a commercial MLV vaccine of genotype 1 or 2, as well as a field strain of genotype 1.1 may provide partial clinical and virological protection upon challenge with the Lena strain. The cross-protection induced by these immunizing strains was not related with the level of genetic similarity to the Lena strain. The slightly higher level of protection established with the field strain is attributed to a better cell-mediated immune response.
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Affiliation(s)
- P Renson
- Agence Nationale de Sécurité Sanitaire Alimentation Environnement Travail (Anses), Unité Virologie Immunologie Porcines, BP 53, 22440 Ploufragan, France; Union des Groupements de Producteurs de Viande de Bretagne (UGPVB), 104 rue Eugène Pottier, 35065 Rennes, France; Université Bretagne Loire, France
| | - C Fablet
- Anses, Unité Epidémiologie et Bien-être Porcins, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - M Le Dimna
- Agence Nationale de Sécurité Sanitaire Alimentation Environnement Travail (Anses), Unité Virologie Immunologie Porcines, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - S Mahé
- Agence Nationale de Sécurité Sanitaire Alimentation Environnement Travail (Anses), Unité Virologie Immunologie Porcines, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - F Touzain
- Anses, Unité Génétique Virale et Biosécurité, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - Y Blanchard
- Anses, Unité Génétique Virale et Biosécurité, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - F Paboeuf
- Anses, Service de Production de Porcs Assainis et Expérimental, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - N Rose
- Anses, Unité Epidémiologie et Bien-être Porcins, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France
| | - O Bourry
- Agence Nationale de Sécurité Sanitaire Alimentation Environnement Travail (Anses), Unité Virologie Immunologie Porcines, BP 53, 22440 Ploufragan, France; Université Bretagne Loire, France.
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Fablet C, Renson P, Pol F, Dorenlor V, Mahé S, Eono F, Eveno E, Le Dimna M, Liegard-Vanhecke D, Eudier S, Rose N, Bourry O. Oral fluid versus blood sampling in group-housed sows and finishing pigs: Feasibility and performance of antibody detection for porcine reproductive and respiratory syndrome virus (PRRSV). Vet Microbiol 2017; 204:25-34. [PMID: 28532802 DOI: 10.1016/j.vetmic.2017.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/03/2017] [Indexed: 11/19/2022]
Abstract
The feasibility of using individual and pen-based oral fluid samples to detect PRRSV antibodies in growing-finishing pigs and group-housed sows was investigated. The diagnostic performances of a commercial oral fluid ELISA (OF-ELISA) and a serum ELISA (SER-ELISA) performed on individual or pooled samples from 5 or 10 pigs and sows was evaluated. The performance of the OF-ELISA was also assessed for pen-based oral fluids. Eight hundred and thirty-four pigs and 1598 sows from 42 PRRSV-infected and 3 PRRSV-negative herds were oral fluid sampled and bled. PRRSV antibodies were detected by an OF-ELISA performed at individual, pool (5 or 10 samples) and pen levels. Serum samples were tested by a SER-ELISA at individual and pool levels. The sensitivity and specificity of ELISAs for individual samples were assessed by Bayesian analysis. The relative diagnostic performance for the pools was calculated by taking individual samples as the gold standard. SER-ELISA and individual OF-ELISA results were used as references for estimating OF-ELISA performance for pen-based samples. Individual oral fluid collection was feasible in all kinds of pigs, whereas pen-based samples were unsuccessful in 40% of the group-housed sow pens. High levels of sensitivity comparable to those of the SER-ELISA were found for the OF-ELISA when performed on individual, 5-sample pool or pen-based samples from pigs or sows. The OF-ELISA lacked specificity for individual samples from sows. Pooling 5 individual oral fluid samples or using pen-based samples increased test specificity.
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Affiliation(s)
- C Fablet
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France.
| | - P Renson
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Virologie Immunologie Porcines, B.P. 53, 22440 Ploufragan, France; Union des Groupements de Producteurs de Viande de Bretagne (UGPVB), 104 rue Eugène Pottier, CS 26553, 35065 Rennes, France; Université Bretagne-Loire, France
| | - F Pol
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - V Dorenlor
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - S Mahé
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Virologie Immunologie Porcines, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - F Eono
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - E Eveno
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - M Le Dimna
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Virologie Immunologie Porcines, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - D Liegard-Vanhecke
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - S Eudier
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - N Rose
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Epidémiologie et Bien-Etre du Porc, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
| | - O Bourry
- Agence Nationale de Sécurité Sanitaire (ANSES), Unité Virologie Immunologie Porcines, B.P. 53, 22440 Ploufragan, France; Université Bretagne-Loire, France
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Pollet S, Renson P, Jaffrezic F, Marot G, Moroldo M, Lecardonnel J, Bourry O, Giuffra E. P3026 RNA silencing-targeted transcriptome of porcine alveolar macrophages on infection with porcine respiratory and reproductive syndrome viruses (PRRSV) of different virulence. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement464a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rose N, Renson P, Andraud M, Paboeuf F, Le Potier MF, Bourry O. Porcine reproductive and respiratory syndrome virus (PRRSv) modified-live vaccine reduces virus transmission in experimental conditions. Vaccine 2015; 33:2493-9. [PMID: 25820061 DOI: 10.1016/j.vaccine.2015.03.040] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
Abstract
Some vaccination strategies have shown good results in reducing the clinical outcomes of PRRS. Nevertheless the effect of vaccines on viral transmission is poorly described, so we aimed to fill this gap with the present study. Twelve Specific Pathogen Free (SPF) piglets, vaccinated against PRRSv at 3 weeks of age (Porcilis PRRS ID(®), MSD), were inoculated at 31 days post-vaccination with a heterologous genogroup 1.1 strain, and put in contact with 12 vaccinated piglets during 49 days. The same protocol was carried out simultaneously with SPF non-vaccinated piglets. Piglets were monitored individually for clinical symptoms on a daily basis and individual blood samples were taken twice a week. In inoculated piglets, the genome viral load specific to the inoculated strain was reduced and viraemia shortened in vaccinated piglets (28 days versus 38 days in non vaccinated piglets). In contact pigs, the challenge strain was detected in the serum of only one vaccinated piglet whereas it was detected in all contact non-vaccinated piglets. Transmission parameters were estimated by a Bayesian analysis of transmission data in the two groups. The estimated transmission rate was 10-times lower in vaccinated than in non-vaccinated piglets and the duration of infectiousness was reduced, leading to a reproduction ratio R significantly lower (0.30 [0.05-0.96] versus 5.42 [2.94-9.04] in non vaccinated piglets). Hence, in our experimental conditions, vaccination was able to decrease considerably PRRSv spread. A complementary evaluation in field conditions would be required to identify circumstances associated with infection control failures that can be observed in pig farms.
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Affiliation(s)
- N Rose
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France.
| | - P Renson
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France
| | - M Andraud
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France
| | - F Paboeuf
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France
| | - M F Le Potier
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France
| | - O Bourry
- Anses-Laboratoire de Ploufragan-Plouzané, BP 53, 22440 Ploufragan, France; Université Européenne de Bretagne, Rennes, France
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Marié JL, Shaw S, Langton D, Bourry O, Gomez J, Davoust B. Sub-clinical infection of dogs from the Ivory Coast and Gabon with Ehrlichia, Anaplasma, Mycoplasma and Rickettsia species. Clin Microbiol Infect 2009; 15 Suppl 2:284-5. [DOI: 10.1111/j.1469-0691.2008.02237.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roqueplo C, Cheminel V, Bourry O, Gomez J, Prévosto JM, Parzy D, Davoust B. Canine ehrlichiosis in the Ivory Coast and Gabon: alteration of biochemical blood parameters based on Ehrlichia canis serology. Clin Microbiol Infect 2009; 15 Suppl 2:41-2. [DOI: 10.1111/j.1469-0691.2008.02168.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Davoust B, Normand T, Bourry O, Dang H, Leroy E, Bourdoiseau G. Epidemiological survey on gastro-intestinal and blood-borne helminths of dogs in north-east Gabon. ACTA ACUST UNITED AC 2009; 75:359-64. [PMID: 19294992 DOI: 10.4102/ojvr.v75i4.112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
A survey of helminth parasites was carried out on 198 dogs living in almost complete liberty in villages in the northeast of Gabon. Faeces and blood samples were collected and analysed. Dirofilaria immitis antigen was detected in 13.6% of dogs using the SNAP 3Dx test, a commercially available enzyme-linked immunosorbent assay (ELISA). Faecal examination revealed that 91.4% of dogs were infected by intestinal helminths. Ascarids were found in 58.5% of the samples. Trichuris vulpis was observed in 49.5% of cases, and Uncinaria spp. and Ancylostoma spp. in 34.8%, Spirocerca lupi in 25.3% and Capillaria spp. in 10.6%. Cestode embryophores were found in 8.6% of the samples.
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Affiliation(s)
- B Davoust
- Direction régionale du service de santé des armies de Toulon, BP 80, 83800 Toulon Armées, France.
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Rolain JM, Bitam I, Buffet S, Marié JL, Bourry O, Portelli-Clerc C, Beaucournu JC, Parola P, Fournier PE, Davoust B, Raoult D. Presence or absence of plasmid in Rickettsia felis depending on the source of fleas. Clin Microbiol Infect 2009; 15 Suppl 2:296-7. [PMID: 19438653 DOI: 10.1111/j.1469-0691.2008.02245.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J M Rolain
- URMITE UMR 6236, CNRS-IRD, Marseille, France
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Abstract
BACKGROUND Previous epidemiological studies of rural human populations in Gabon reveal a high prevalence of human hepatitis A, B, C and D viruses. In order to investigate the prevalence of the blood-born hepatitis viruses in apes and monkeys living in the same area, we performed an epidemiological survey of HBV, HCV and HDV in wild-born non-human primates. METHODS We tested 441 wild-born non-human primates from Gabon and Congo and 132 imported monkeys for the presence of serological markers of HBV, HCV and HDV infections. RESULTS None of Cercopithecidae monkeys were reactive against HBV/HDV and HCV. In contrast, 29.2% of wild-born great apes (154 chimpanzees and 14 gorillas) were positive for HBV serological markers. Nine chimpanzees were in the replicative phase of HBV infection. None of these HBV infected chimpanzees exhibited symptoms or significant changes in serum clinical chemistry related to HBV infection. CONCLUSIONS The negativity to HCV-related viruses and the negativity of the Cercopithecidae species tested against HBV/HDV do not allow us to definitively rule out the presence of an animal counterpart of human hepatitis viruses in non-human primates.
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Affiliation(s)
- M Makuwa
- Unité de Rétro Virologie, Centre International de Recherches Médicales de Franceville, Franceville, Gabon.
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Makuwa M, Souquière S, Clifford SL, Telfer PT, Sallé B, Bourry O, Onanga R, Mouinga-Ondeme A, Wickings EJ, Abernethy KA, Rouquet P, Simon F, Roques P. Two distinct STLV-1 subtypes infecting Mandrillus sphinx follow the geographic distribution of their hosts. AIDS Res Hum Retroviruses 2004; 20:1137-43. [PMID: 15585107 DOI: 10.1089/aid.2004.20.1137] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The mandrill (Mandrillus sphinx) has been shown to be infected with an STLV-1 closely related to HTLV-1. Two distinct STLV-1 subtypes (D and F) infect wild mandrills with high overall prevalence (27.0%) but are different with respect to their phylogenetic relationship and parallel to the mandrills' geographic range. The clustering of these new STLV-1mnd sequences with HTLV-1 subtype D and F suggests first, past simian-to-human transmissions in Central Africa and second, that species barriers are easier to cross over than geographic barriers.
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Affiliation(s)
- M Makuwa
- Laboratoire de Virologie, UGENET, CDP, SEGC-Lopé, Centre International de Recherches Médicales, Franceville, Gabon.
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Makuwa M, Souquière S, Telfer P, Leroy E, Bourry O, Rouquet P, Clifford S, Wickings EJ, Roques P, Simon F. Occurrence of hepatitis viruses in wild-born non-human primates: a 3 year (1998-2001) epidemiological survey in Gabon. J Med Primatol 2004; 32:307-14. [PMID: 14641785 DOI: 10.1046/j.1600-0684.2003.00042.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hepatitis B and C infections are endemic in human population in central Africa, particularly in Gabon. The aim of this study was to determine the prevalence of hepatitis B virus (HBV) and eventual occurrence of hepatitis C virus (HBC)-related strains in a variety of wild-born non-human primates living in Gabon and Congo. Plasma samples were screened for HBV and HCV markers. A non-invasive method of DNA extraction from faeces followed by specific HBV-DNA amplification was developed to study this infection in wild troops of chimpanzees and gorillas. No HCV infection in non-human primates, wild-born or captive, was detected among 596 samples tested. No HBV infection could be detected in samples tested and obtained from Cercopithecidae. In contrast, 14.7 and 42.2% of wild-born chimpanzees in Gabon and Congo were infected with HBV or had evidence of past HBV infection. At Centre International de Recherches Médicales (CIRMF) Primate Centre, 32.1% of chimpanzees and gorillas were HBV positive or had evidence of past infection. In the cases with past infection, 5.9% wild-born and 8.3% at CIRMF harboured HBV-DNA despite the presence of neutralizing HbsAb. Together with previous findings, we confirm the high HBV prevalence not only in humans but also in chimpanzees and gorillas in Gabon and Congo.
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Affiliation(s)
- M Makuwa
- Centre International de Recherches Médicales, Franceville, Gabon.
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Pandrea I, Onanga R, Rouquet P, Bourry O, Ngari P, Wickings EJ, Roques P, Apetrei C. Chronic SIV infection ultimately causes immunodeficiency in African non-human primates. AIDS 2001; 15:2461-2. [PMID: 11826852 DOI: 10.1097/00002030-200112070-00019] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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