Successful treatment and polymerase chain reaction (PCR) confirmation of Tyzzer's disease in a foal and clinical and pathologic characteristics of 6 additional foals (1986-2005)

Angela Borchers, K G Magdesian, Spring Halland, Nicola Pusterla, William D Wilson

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Background: Tyzzer's disease is a rapidly progressive and highly fatal hepatitis of foals caused by Clostridium piliforme. Survival of a confirmed case has not been reported previously. Hypothesis: Successful therapy of C piliforme infection in foals is possible. Polymerase chain reaction (PCR) can be used to diagnose Tyzzer's disease antemortem or postmortem. Animals: Seven foals were included in the study. Methods: Retrospective study was made to evaluate the clinical and pathologic characteristics of foals with Tyzzer's disease. Medical records of the Veterinary Medical Teaching Hospital at University of California Davis were reviewed. Foals <3 months old were included in the study if typical clinical signs were present and histologic examination identified multifocal coagulative necrosis and hepatitis with intracytoplasmic filamentous bacilli, consistent with C piliforme. A real-time TaqMan assay was developed to detect C piliforme gene sequences in liver tissue from affected foals. Results: Median survival time from onset of disease in nonsurviving foals was 30 hours (mean 34.5 ± 20.1; range, 16-62 hours). Common clinical findings included lethargy, recumbency, seizures, and fever. Laboratory findings included metabolic acidosis, hypoglycemia and increased activity of hepatobiliary enzymes. Treatment consisted of IV fluids, antimicrobial and antiinflammatory drugs, and parenteral nutrition. One filly survived, whereas 6 died. Postmortem examination of the 6 foals that died disclosed hepatomegaly with multifocal necrosis. Liver tissue from 4 foals was positive for C piliforme gene sequences using PCR. Conclusions and clinical importance: Although the mortality rate of Tyzzer's disease is high, successful outcome is possible if intensive care is initiated promptly. PCR can be used for early and specific diagnosis.

Original languageEnglish (US)
Pages (from-to)1212-1218
Number of pages7
JournalJournal of Veterinary Internal Medicine
Volume20
Issue number5
DOIs
StatePublished - Sep 2006

Fingerprint

foals
polymerase chain reaction
Polymerase Chain Reaction
Hepatitis
Necrosis
Therapeutics
Febrile Seizures
Lethargy
hepatitis
Hepatomegaly
Clostridium
Liver
Parenteral Nutrition
Critical Care
Acidosis
Hypoglycemia
Teaching Hospitals
Bacillus
Genes
necrosis

Keywords

  • Clostridium piliforme infection
  • Horse
  • PCR
  • Sepsis

ASJC Scopus subject areas

  • veterinary(all)

Cite this

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title = "Successful treatment and polymerase chain reaction (PCR) confirmation of Tyzzer's disease in a foal and clinical and pathologic characteristics of 6 additional foals (1986-2005)",
abstract = "Background: Tyzzer's disease is a rapidly progressive and highly fatal hepatitis of foals caused by Clostridium piliforme. Survival of a confirmed case has not been reported previously. Hypothesis: Successful therapy of C piliforme infection in foals is possible. Polymerase chain reaction (PCR) can be used to diagnose Tyzzer's disease antemortem or postmortem. Animals: Seven foals were included in the study. Methods: Retrospective study was made to evaluate the clinical and pathologic characteristics of foals with Tyzzer's disease. Medical records of the Veterinary Medical Teaching Hospital at University of California Davis were reviewed. Foals <3 months old were included in the study if typical clinical signs were present and histologic examination identified multifocal coagulative necrosis and hepatitis with intracytoplasmic filamentous bacilli, consistent with C piliforme. A real-time TaqMan assay was developed to detect C piliforme gene sequences in liver tissue from affected foals. Results: Median survival time from onset of disease in nonsurviving foals was 30 hours (mean 34.5 ± 20.1; range, 16-62 hours). Common clinical findings included lethargy, recumbency, seizures, and fever. Laboratory findings included metabolic acidosis, hypoglycemia and increased activity of hepatobiliary enzymes. Treatment consisted of IV fluids, antimicrobial and antiinflammatory drugs, and parenteral nutrition. One filly survived, whereas 6 died. Postmortem examination of the 6 foals that died disclosed hepatomegaly with multifocal necrosis. Liver tissue from 4 foals was positive for C piliforme gene sequences using PCR. Conclusions and clinical importance: Although the mortality rate of Tyzzer's disease is high, successful outcome is possible if intensive care is initiated promptly. PCR can be used for early and specific diagnosis.",
keywords = "Clostridium piliforme infection, Horse, PCR, Sepsis",
author = "Angela Borchers and Magdesian, {K G} and Spring Halland and Nicola Pusterla and Wilson, {William D}",
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language = "English (US)",
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T1 - Successful treatment and polymerase chain reaction (PCR) confirmation of Tyzzer's disease in a foal and clinical and pathologic characteristics of 6 additional foals (1986-2005)

AU - Borchers, Angela

AU - Magdesian, K G

AU - Halland, Spring

AU - Pusterla, Nicola

AU - Wilson, William D

PY - 2006/9

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N2 - Background: Tyzzer's disease is a rapidly progressive and highly fatal hepatitis of foals caused by Clostridium piliforme. Survival of a confirmed case has not been reported previously. Hypothesis: Successful therapy of C piliforme infection in foals is possible. Polymerase chain reaction (PCR) can be used to diagnose Tyzzer's disease antemortem or postmortem. Animals: Seven foals were included in the study. Methods: Retrospective study was made to evaluate the clinical and pathologic characteristics of foals with Tyzzer's disease. Medical records of the Veterinary Medical Teaching Hospital at University of California Davis were reviewed. Foals <3 months old were included in the study if typical clinical signs were present and histologic examination identified multifocal coagulative necrosis and hepatitis with intracytoplasmic filamentous bacilli, consistent with C piliforme. A real-time TaqMan assay was developed to detect C piliforme gene sequences in liver tissue from affected foals. Results: Median survival time from onset of disease in nonsurviving foals was 30 hours (mean 34.5 ± 20.1; range, 16-62 hours). Common clinical findings included lethargy, recumbency, seizures, and fever. Laboratory findings included metabolic acidosis, hypoglycemia and increased activity of hepatobiliary enzymes. Treatment consisted of IV fluids, antimicrobial and antiinflammatory drugs, and parenteral nutrition. One filly survived, whereas 6 died. Postmortem examination of the 6 foals that died disclosed hepatomegaly with multifocal necrosis. Liver tissue from 4 foals was positive for C piliforme gene sequences using PCR. Conclusions and clinical importance: Although the mortality rate of Tyzzer's disease is high, successful outcome is possible if intensive care is initiated promptly. PCR can be used for early and specific diagnosis.

AB - Background: Tyzzer's disease is a rapidly progressive and highly fatal hepatitis of foals caused by Clostridium piliforme. Survival of a confirmed case has not been reported previously. Hypothesis: Successful therapy of C piliforme infection in foals is possible. Polymerase chain reaction (PCR) can be used to diagnose Tyzzer's disease antemortem or postmortem. Animals: Seven foals were included in the study. Methods: Retrospective study was made to evaluate the clinical and pathologic characteristics of foals with Tyzzer's disease. Medical records of the Veterinary Medical Teaching Hospital at University of California Davis were reviewed. Foals <3 months old were included in the study if typical clinical signs were present and histologic examination identified multifocal coagulative necrosis and hepatitis with intracytoplasmic filamentous bacilli, consistent with C piliforme. A real-time TaqMan assay was developed to detect C piliforme gene sequences in liver tissue from affected foals. Results: Median survival time from onset of disease in nonsurviving foals was 30 hours (mean 34.5 ± 20.1; range, 16-62 hours). Common clinical findings included lethargy, recumbency, seizures, and fever. Laboratory findings included metabolic acidosis, hypoglycemia and increased activity of hepatobiliary enzymes. Treatment consisted of IV fluids, antimicrobial and antiinflammatory drugs, and parenteral nutrition. One filly survived, whereas 6 died. Postmortem examination of the 6 foals that died disclosed hepatomegaly with multifocal necrosis. Liver tissue from 4 foals was positive for C piliforme gene sequences using PCR. Conclusions and clinical importance: Although the mortality rate of Tyzzer's disease is high, successful outcome is possible if intensive care is initiated promptly. PCR can be used for early and specific diagnosis.

KW - Clostridium piliforme infection

KW - Horse

KW - PCR

KW - Sepsis

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