Per Wallgren

Summary

Affiliation: National Veterinary Institute
Country: Sweden

Publications

  1. pmc Evaluation of a blocking ELISA for the detection of antibodies against Lawsonia intracellularis in pig sera
    Magdalena Jacobson
    Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Husbandry, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
    Acta Vet Scand 53:23. 2011
  2. pmc Dynamics of serum antibodies to and load of porcine circovirus type 2 (PCV2) in pigs in three finishing herds, affected or not by postweaning multisystemic wasting syndrome
    Inger M Brunborg
    National Veterinary Institute, PO Box 750 Sentrum, N 0106 Oslo, Norway
    Acta Vet Scand 52:22. 2010
  3. ncbi request reprint Humoral immune responses to Mycoplasma hyopneumoniae in sows and offspring following an outbreak of mycoplasmosis
    P Wallgren
    National Veterinary Institute, Uppsala, Sweden
    Vet Microbiol 60:193-205. 1998
  4. doi request reprint Postweaning multisystemic wasting syndrome (PMWS) in Sweden from an exotic to an endemic disease
    P Wallgren
    National Veterinary Institute, Uppsala, Sweden
    Vet Q 29:122-37. 2007
  5. pmc The index herd with PMWS in Sweden: presence of serum amyloid A, circovirus 2 viral load and antibody levels in healthy and PMWS-affected pigs
    Per Wallgren
    National Veterinary Institute, SVA, 751 89 Uppsala, Sweden
    Acta Vet Scand 51:13. 2009
  6. ncbi request reprint Postweaning multisystemic wasting syndrome--PMWS. the first year with the disease in Sweden
    P Wallgren
    National Veterinary Institute, SVA, 751 89 Uppsala, Sweden
    Vet Q 26:170-87. 2004
  7. ncbi request reprint Relationship between the amounts of antibodies to Actinobacillus pleuropneumoniae serotype 2 detected in blood serum and in fluids collected from muscles of pigs
    P Wallgren
    National Veterinary Institute, 751 89 Uppsala, Sweden
    J Vet Med B Infect Dis Vet Public Health 47:727-37. 2000
  8. doi request reprint Comparison of two H1N2 swine influenza A viruses from disease outbreaks in pigs in Sweden during 2009 and 2010
    Giorgi Metreveli
    Section of Virology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7036, 750 07, Uppsala, Sweden
    Virus Genes 42:236-44. 2011
  9. pmc Incidence of lameness and abrasions in piglets in identical farrowing pens with four different types of floor
    Mate Zoric
    National Veterinary Institute, SVA, 75189 Uppsala, Sweden
    Acta Vet Scand 51:23. 2009
  10. pmc Swine influenza viruses isolated in 1983, 2002 and 2009 in Sweden exemplify different lineages
    Istvan Kiss
    National Veterinary Institute, Ulls Väg 2B, 75189 Uppsala, Sweden
    Acta Vet Scand 52:65. 2010

Collaborators

Detail Information

Publications36

  1. pmc Evaluation of a blocking ELISA for the detection of antibodies against Lawsonia intracellularis in pig sera
    Magdalena Jacobson
    Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Husbandry, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden
    Acta Vet Scand 53:23. 2011
    ..The aim of the present study was to evaluate a blocking ELISA in the detection of serum antibodies to L. intracellularis, by comparison to the previously widely used immunofluorescent antibody test (IFAT)...
  2. pmc Dynamics of serum antibodies to and load of porcine circovirus type 2 (PCV2) in pigs in three finishing herds, affected or not by postweaning multisystemic wasting syndrome
    Inger M Brunborg
    National Veterinary Institute, PO Box 750 Sentrum, N 0106 Oslo, Norway
    Acta Vet Scand 52:22. 2010
    ..This study focused on PCV2 load and antibody dynamics in finishing herds with different PMWS status...
  3. ncbi request reprint Humoral immune responses to Mycoplasma hyopneumoniae in sows and offspring following an outbreak of mycoplasmosis
    P Wallgren
    National Veterinary Institute, Uppsala, Sweden
    Vet Microbiol 60:193-205. 1998
    ..Significantly higher levels of antibodies to M. hyopneumoniae were produced by PBMC obtained from pigs aged 5-9 weeks. Thus, the ability of PBMC to produce antibodies to M. hyopneumoniae in vitro seemed to be age-dependent...
  4. doi request reprint Postweaning multisystemic wasting syndrome (PMWS) in Sweden from an exotic to an endemic disease
    P Wallgren
    National Veterinary Institute, Uppsala, Sweden
    Vet Q 29:122-37. 2007
    ..In Sweden, intensity in rearing, disease preventing measures and immaturity of the piglets appear to be important as predisposing factors to PMWS and, as such, are discussed in this article...
  5. pmc The index herd with PMWS in Sweden: presence of serum amyloid A, circovirus 2 viral load and antibody levels in healthy and PMWS-affected pigs
    Per Wallgren
    National Veterinary Institute, SVA, 751 89 Uppsala, Sweden
    Acta Vet Scand 51:13. 2009
    ....
  6. ncbi request reprint Postweaning multisystemic wasting syndrome--PMWS. the first year with the disease in Sweden
    P Wallgren
    National Veterinary Institute, SVA, 751 89 Uppsala, Sweden
    Vet Q 26:170-87. 2004
    ..The data generated to date in Sweden suggest that introduction of a new contagious microbe into the country that is responsible for the PMWS outbreaks appears unlikely, as does the spread of PMWS via semen...
  7. ncbi request reprint Relationship between the amounts of antibodies to Actinobacillus pleuropneumoniae serotype 2 detected in blood serum and in fluids collected from muscles of pigs
    P Wallgren
    National Veterinary Institute, 751 89 Uppsala, Sweden
    J Vet Med B Infect Dis Vet Public Health 47:727-37. 2000
    ..The sensitivity was determined to be 88% when calculated on seropositive pigs (A450 = 0.3 in serum diluted 1/1000). That figure increased to 97% if calculated on pigs expressing pronounced amounts of serum antibodies (A450 > or = 0.5)...
  8. doi request reprint Comparison of two H1N2 swine influenza A viruses from disease outbreaks in pigs in Sweden during 2009 and 2010
    Giorgi Metreveli
    Section of Virology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7036, 750 07, Uppsala, Sweden
    Virus Genes 42:236-44. 2011
    ..The findings should contribute to better understanding of factors related to the survival/extinction of this uncommon reassortant variant...
  9. pmc Incidence of lameness and abrasions in piglets in identical farrowing pens with four different types of floor
    Mate Zoric
    National Veterinary Institute, SVA, 75189 Uppsala, Sweden
    Acta Vet Scand 51:23. 2009
    ..In this study, the influence of improvements of the floor quality and of increased ratios of straw in identical farrowing pens was measured...
  10. pmc Swine influenza viruses isolated in 1983, 2002 and 2009 in Sweden exemplify different lineages
    Istvan Kiss
    National Veterinary Institute, Ulls Väg 2B, 75189 Uppsala, Sweden
    Acta Vet Scand 52:65. 2010
    ..The latter two showed close genetic relatedness regarding their PB2, HA, NP, and NS genes, suggesting common ancestry. The study substantiates the importance of molecular surveillance for swine influenza viruses...
  11. doi request reprint Studies of porcine circovirus type 2, porcine boca-like virus and torque teno virus indicate the presence of multiple viral infections in postweaning multisystemic wasting syndrome pigs
    Anne Lie Blomström
    Department of Biomedical Sciences and Veterinary Public Health, Section of Virology, Swedish University of Agricultural Sciences, Uppsala, Sweden
    Virus Res 152:59-64. 2010
    ..These observations indicate a multiple viral infection in PMWS-affected pigs. It has to be studied further if the clinical manifestation of PMWS might be due to synergistic effects of different viruses acting together...
  12. pmc Direct and indirect transmission of four Salmonella enterica serotypes in pigs
    Julia Osterberg
    National Veterinary Institute, SVA, SE 751 89 Uppsala, Sweden
    Acta Vet Scand 52:30. 2010
    ....
  13. ncbi request reprint Exudative epidermitis and porcine circovirus-2 infection in a Swedish SPF-herd
    Eva Wattrang
    Department of Veterinary Microbiology, Division of Immunology, Swedish University of Agricultural Sciences, Uppsala, Sweden
    Vet Microbiol 86:281-93. 2002
    ..Coincidence of active viral infection and sero-conversion to PCV-2 points to the virus as the cause of the EE outbreak and reproductive disturbances...
  14. pmc Field experience with two different vaccination strategies aiming to control infections with Actinobacillus pleuropneumoniae in a fattening pig herd
    Marie Sjölund
    Department of Animal Health and Antimicrobial Strategies, National Veterinary Institute, SE 751 89 Uppsala, Sweden
    Acta Vet Scand 52:23. 2010
    ..Vaccinations present an appealing alternative to antimicrobial treatments. The aim of this work was to evaluate the potential of two different vaccination strategies in a specialized fattening herd affected by actinobacillosis...
  15. pmc Abrasions and lameness in piglets born in different farrowing systems with different types of floor
    Mate Zoric
    National Veterinary Institute, SVA, 751 89 Uppsala, Sweden
    Acta Vet Scand 50:37. 2008
    ..Apart from animal suffering, lameness contributes to losses in form of dead piglets, decreased growth, and increased use of antibiotics and manual labour...
  16. doi request reprint Global transcriptional response to ISCOM-Matrix adjuvant at the site of administration and in the draining lymph node early after intramuscular injection in pigs
    Viktor Ahlberg
    Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
    Dev Comp Immunol 38:17-26. 2012
    ..Thus, several genes, genetic pathways and biological processes were identified that are likely to shape the early immune response elicited by ISCOM-based vaccines...
  17. pmc The first Swedish H1N2 swine influenza virus isolate represents an uncommon reassortant
    Adám Bálint
    National Veterinary Institute, SVA, Ulls Väg 2B, SE 751 89 Uppsala, Sweden
    Virol J 6:180. 2009
    ..The description of this H1N2 SIV adds further information to influenza epidemiology and supports the necessity of surveillance for influenza viruses in pigs...
  18. ncbi request reprint Detection of individual microbial pathogens by proximity ligation
    Sigrun M Gustafsdottir
    The Beijer Laboratory, Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala, Sweden
    Clin Chem 52:1152-60. 2006
    ..Nucleic acid amplification allows the detection of single infectious agents. Protein-based assays, although they provide information on ongoing infections, have substantially less detection sensitivity...
  19. pmc Phenotyping of E. coli serotypes associated to oedema disease
    Sigbrit Mattsson
    National Veterinary Institute, SVA 751 89 Uppsala, Sweden
    Acta Vet Scand 50:13. 2008
    ..It is caused by E. coli strains that express fimbriae F18 and produce verotoxin 2e, mainly belonging to serotype O138, O139 or O141. The aim of this study was to compare E. coli isolates within these serotypes with respect to diversity...
  20. doi request reprint Removal of virus from boar semen spiked with porcine circovirus type 2
    Gunilla Blomqvist
    National Veterinary Institute, SVA, Uppsala, Sweden
    Anim Reprod Sci 126:108-14. 2011
    ..25-3.82 (TCID(50))/50μL the two-step sperm selection method eliminated 2.92±0.23 logs of infectious PCV2, corresponding to more than 99% reduction. Sperm quality was not affected by the selection procedure...
  21. ncbi request reprint Experimental swine dysentery: comparison between infection models
    Magdalena Jacobson
    Department of Large Animal Clinical Sciences, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala, Sweden National Veterinary Institute, Uppsala, Sweden
    J Med Microbiol 53:273-80. 2004
    ..If the pigs were fed soybean meal, kept in single pens and circulated between the pens, five out of nine developed disease...
  22. pmc Influence of cereal non-starch polysaccharides on ileo-caecal and rectal microbial populations in growing pigs
    Ann Högberg
    Swedish University of Agricultural Sciences, Dep of Animal Nutrition and Management, Uppsala, Sweden
    Acta Vet Scand 45:87-98. 2004
    ..Both the total gut microflora and the coliform flora were influenced by the dietary NSP content...
  23. ncbi request reprint Effects of a challenge dose of Salmonella Typhimurium or Salmonella Yoruba on the patterns of excretion and antibody responses of pigs
    J Osterberg
    National Veterinary Institute, Uppsala, Sweden
    Vet Rec 162:580-6. 2008
    ..65 x 10(6) cfu seroconverted later and with lower titres of antibodies, and the pigs inoculated with 0.65 x 10(3) cfu did not seroconvert. A similar pattern was observed with S Yoruba, but the responses were slower and at lower titres...
  24. ncbi request reprint Lameness in piglets. Abrasions in nursing piglets and transfer of protection towards infections with Streptococci from sow to offspring
    M Zoric
    National Veterinary Institute, S 751 89 Uppsala, Sweden
    J Vet Med B Infect Dis Vet Public Health 51:278-84. 2004
    ..During the first 2 weeks of life somewhat lower median levels of serum antibodies were recorded among the piglets that were treated against arthritis (n = 8)...
  25. ncbi request reprint Aspects of the transmission of protection against Mycoplasma hyopneumoniae from sow to offspring
    E Rautiainen
    National Veterinary and Food Research Institute, , Finland
    J Vet Med B Infect Dis Vet Public Health 48:55-65. 2001
    ..It was concluded that a high antibody level in colostrum appeared to protect piglets from M. hyopneumoniae...
  26. ncbi request reprint Reproduction of PMWS with a 1993 Swedish isolate of PCV-2
    G M Allan
    Vet Rec 150:255-6. 2002
  27. ncbi request reprint Diarrhoea in the growing pig - a comparison of clinical, morphological and microbial findings between animals from good and poor performance herds
    M Jacobson
    Department of Large Animal Clinical Sciences, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, P O Box 7018, SE 750 07 Uppsala, Sweden
    Res Vet Sci 74:163-9. 2003
    ..In addition, concomitant infections with other presumptive pathogens were commonly found...
  28. pmc Aspects on feed related prophylactic measures aiming to prevent post weaning diarrhoea in pigs
    L Melin
    Department of Ruminant and Porcine Diseases, National Veterinary Institute, Uppsala, Sweden
    Acta Vet Scand 43:231-45. 2002
    ..The group given lactose+fibres was least affected with respect to these parameters. In conclusion feed related measures may alleviate symptoms of PWD...
  29. ncbi request reprint Interleukin 6, serum amyloid A and haptoglobin as markers of treatment efficacy in pigs experimentally infected with Actinobacillus pleuropneumoniae
    C Hultén
    Department of Clinical Chemistry, P O Box 7038, Uppsala, Sweden
    Vet Microbiol 95:75-89. 2003
    ....
  30. ncbi request reprint Four-year study of lameness in piglets at a research station
    M Zoric
    National Veterinary Institute, S 751 89 Uppsala, Sweden
    Vet Rec 153:323-8. 2003
    ..Clinical signs of disease in the sow and whether the piglets were given an intramuscular injection of 200 mg of iron on their second, third or fourth day of life had no effect on the incidence of lameness...
  31. ncbi request reprint Actinobacillus pleuropneumoniae in Thai pig herds. Prevalence of serum antibodies and relation to performance
    P Assavacheep
    Department of Ruminant and Porcine Diseases, National Veterinary Institute, SVA, SE 751 89 Uppsala, Sweden
    J Vet Med B Infect Dis Vet Public Health 50:390-5. 2003
    ..A low pathogen load with respect to A. pleuropneumoniae, as well as small herd size and age-segregated rearing, tended to improve the performance of growers...
  32. ncbi request reprint Development of post-weaning diarrhoea in piglets. Relation to presence of Escherichia coli strains and rotavirus
    L Melin
    Department of Ruminant and Porcine Diseases, National Veterinary Institute, 751 89 Uppsala, Sweden
    J Vet Med B Infect Dis Vet Public Health 51:12-22. 2004
    ..coli, and in these groups diarrhoea was seen in the absence of rotavirus. ACTH administration amplified the clinical signs. The litter of origin influenced the development of post-weaning diarrhoea...
  33. ncbi request reprint Experimental reproduction of postweaning multisystemic wasting syndrome (PMWS) in pigs in Sweden and Denmark with a Swedish isolate of porcine circovirus type 2
    F Hasslung
    Department of Molecular Biosciences, Section of Veterinary Immunology and Virology, Swedish University of Agricultural Sciences, Biomedical Centre, PO Box 588, SE 751 23 Uppsala, Sweden
    Vet Microbiol 106:49-60. 2005
    ..Thus, the pathogenicity of S-PCV2 was confirmed and a role for cytokines in the etiology of PMWS was indicated...
  34. ncbi request reprint Routine diagnostics of Lawsonia intracellularis performed by PCR, serological and post mortem examination, with special emphasis on sample preparation methods for PCR
    M Jacobson
    Department of Large Animal Clinical Sciences, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, P O Box 7018, SE 750 07 Uppsala, Sweden
    Vet Microbiol 102:189-201. 2004
    ..To determine the presence of the bacteria in a herd, serology or repeated faecal sampling for PCR from target animals, or both, should be used...
  35. ncbi request reprint The DNA vaccine vector pcDNA3 induces IFN-alpha production in pigs
    Elin Johansson
    Division of Immunology, Department of Veterinary Microbiology, SLU, BMC, Box 588, S 751 23 Uppsala, Sweden
    Vet Immunol Immunopathol 87:29-40. 2002
    ..The IFN-alpha response increased markedly at repeated injections of pcDNA3. This IFN-alpha inducing capacity of the plasmid is likely to affect immune responses at DNA vaccination of pigs...
  36. ncbi request reprint Intestinal cannulation: model for study of the midgut of the pig
    M Jacobson
    Department of Large Animal Clinical Sciences, Swedish University of Agricultural Sciences, National Veterinary Institute, Uppsala
    Comp Med 51:163-70. 2001
    ..The procedures did not influence health status of the pigs, nor alter gut function. The method will be useful in experimental infection studies as well as in other physiologic investigations...