Pododermal angiogenesis and angioadaptation in the bovine claw

Area of Science:

• Veterinary Anatomy
• Angiogenesis Research
• Bovine Podiatry

Background:

• Pododermal microvascularization is vital for bovine claw health and disease pathogenesis.
• Angiogenesis, driven by vascular endothelial growth factor (VEGF), is hypothesized to be central to claw function.

Purpose of the Study:

• To investigate the mechanisms of pododermal angiogenesis in functional adaptation and pathological changes of bovine claws.
• To examine microvascular adaptation in healthy and diseased claws using histological sections and microcorrosion casts.

Main Methods:

• Utilized scanning electron microscopy of microcorrosion casts to assess 3D pododermal angiogenesis and angioadaptation.
• Employed a 3D in vitro model using cultured bovine microvascular endothelial cells to support findings.
• Examined histological serial sections of healthy juvenile, adult, and pathologically altered bovine claws.

Main Results:

• Demonstrated sprouting and intussusceptive angioadaptation in juvenile and adult bovine claws, mirroring in vitro angiogenesis stages.
• Detected angiogenic processes in claws affected by subclinical laminitis and digital dermatitis complex.
• Observed angioadaptation as a response to increased metabolic demands from body weight load and as a reparative principle in diseased claws.

Conclusions:

• Angiogenic remodeling of pododermal angioarchitecture is a key mechanism for functional adaptation and repair in bovine claws.
• Findings provide a basis for understanding claw physiology and pathology, informing future research on prophylaxis and therapy for claw diseases.