Peritoneal concentrations of transforming growth factor beta in horses with colic.

Authors: Argüelles D, Casteljins G, Carmona J U, Armengou L, Climent F, Prades M

Journal: Equine veterinary journal

DOI: 10.1111/j.2042-3306.2010.00102.x PubMed: 20636783Log in to save

Summary

# Peritoneal TGF-beta Concentrations in Equine Colic: Clinical Significance and Prognostic Value Transforming growth factor beta (TGF-beta) functions as an anti-inflammatory mediator in peritoneal disease and adhesion formation in humans, yet its role in equine colic remained unexplored until this investigation. Researchers analysed plasma and peritoneal fluid samples from 78 colic-affected horses and 8 healthy controls, stratifying cases by diagnosis (obstruction, enteritis, ischaemic lesions, peritonitis), fluid classification (transudate, modified transudate, exudate) and outcome, using ELISA to quantify TGF-beta(1) and TGF-beta(3) isoforms. Peritoneal TGF-beta(1) concentrations proved significantly elevated in peritonitis and ischaemic lesion cases versus controls, with exudative fluids showing markedly higher levels than transudates; critically, both peritoneal TGF-beta(1) and TGF-beta(3), along with plasma TGF-beta(1), were substantially increased in non-surviving horses compared to survivors. These findings suggest that elevated TGF-beta concentrations may serve as a biomarker of severe intestinal compromise and poor prognosis, whilst the elevation itself likely represents a protective anti-inflammatory response in advanced disease. For practitioners, measuring peritoneal TGF-beta concentration could potentially refine prognostic assessment in severe colic cases and help stratify patients requiring more aggressive intervention or palliative care pathways.

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Practical Takeaways

•Peritoneal TGF-beta(1) levels may serve as a biomarker for severe gastrointestinal disease (ischaemia, peritonitis) and prognosis in colicky horses, helping clinicians identify high-risk cases
•Elevated peritoneal TGF-beta reflects an anti-inflammatory response to severe disease; horses with markedly elevated levels warrant aggressive intervention and careful monitoring for poor outcomes
•Peritoneal fluid analysis type (exudate vs transudate) correlates with TGF-beta elevation and disease severity, supporting the use of fluid classification in risk stratification

Key Findings

•Peritoneal TGF-beta(1) concentrations were significantly higher (P=0.01) in horses with peritonitis and ischaemic lesions compared to controls and obstruction groups
•Peritoneal TGF-beta(1) was significantly higher (P=0.01) in exudates compared to transudates, correlating with severity of peritoneal inflammation
•Peritoneal TGF-beta(1) and TGF-beta(3) concentrations were significantly elevated in non-survivors compared to survivors (P=0.001 and P=0.004 respectively), suggesting prognostic value

Conditions Studied

colic - obstructionscolic - enteritiscolic - ischaemic disordersperitonitis

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