Therapeutic angiogenesis for critical limb ischaemia

Area of Science:

• Vascular Biology and Medicine
• Regenerative Medicine
• Clinical Trials Research

Background:

• Peripheral arterial disease (PAD) affects lower extremities, with critical limb ischemia (CLI) being its most severe form.
• CLI patients face high risks of amputation and cardiovascular death despite current treatments.
• Revascularization is not always feasible or successful for CLI patients.

Purpose of the Study:

• To review phase II and III clinical trials of therapeutic angiogenesis in PAD patients.
• To discuss reasons for limited success of therapeutic angiogenesis in humans.
• To explore future directions in therapeutic angiogenesis for restoring limb perfusion.

Main Methods:

• Review of data from phase II and III clinical trials on therapeutic angiogenesis for PAD.
• Analysis of mechanisms underlying angiogenesis and vascular remodeling.
• Exploration of advances in systems biology, genetics, and gene therapy.

Main Results:

• Therapeutic angiogenesis trials in PAD have shown limited success in humans.
• Understanding of angiogenesis mechanisms is advancing, revealing complexities.
• Current approaches face challenges in effectively augmenting perfusion.

Conclusions:

• Despite challenges, therapeutic angiogenesis holds potential for PAD and CLI treatment.
• Advances in systems biology and gene therapy may offer new therapeutic avenues.
• Further research is needed to overcome limitations and restore limb perfusion effectively.