No Evidence of Herpesvirus Infection in West Highland White Terriers With Canine Idiopathic Pulmonary Fibrosis.

Summary

# Editorial Summary Idiopathic pulmonary fibrosis in West Highland White Terriers represents a progressive and poorly characterised lung disease with significant clinical consequences, yet given established links between gammaherpesvirus infection and fibrotic lung disorders in humans, horses, and rodents, herpesvirus involvement warranted investigation in the canine disease. Roels and colleagues employed broad-spectrum PCR targeting conserved herpesvirus DNA polymerase sequences on both pulmonary and blood samples from 28 affected WHWTs and 46 control dogs (representing 28 lung samples and 19 paired blood samples respectively), using degenerate and inosine-substituted primers designed to detect a wide range of herpesviral species. No herpesvirus DNA was amplified from any sample across either tissue type, effectively ruling out active or latent herpesviral infection as a causative factor in canine idiopathic pulmonary fibrosis. Whilst this finding is negative, it meaningfully narrows the aetiological possibilities and redirects investigation towards alternative mechanisms—whether environmental, immunological, or genetic—permitting clinicians and researchers to exclude viral aetiology from their differential diagnoses and focus resources on other pathogenic pathways in this breed-specific condition.

Read the full abstract on PubMed

Key Findings

• •No herpesvirus DNA was detected in lung samples from 28 affected WHWTs or 18 control dogs using PCR targeting conserved DNA polymerase regions
• •No herpesvirus DNA was amplified from blood samples of 19 CIPF-affected WHWTs or 19 control WHWTs
• •An association between CIPF and herpesvirus infection in dogs is unlikely based on negative PCR results across all 84 samples tested

Conditions Studied

Tags