System Sundays: NO GUTS, NO GLORY: Microbiome, Diabetes, and Wound Healing

From seizures to Granulation Nation: The Unexpected Story of Phenytoin in Wound Healing

This episode traces how phenytoin — an anticonvulsant known for causing gingival overgrowth — was repurposed into a topical therapy for chronic wounds. It outlines the drug’s mechanisms in wounds: activating fibroblasts, increasing collagen synthesis, reducing MMP activity, modulating inflammation, and promoting granulation and angiogenesis in stalled diabetic foot ulcers. Listeners will hear clinical implications, common formulations, and important cautions: topical phenytoin can aid healing in selected chronic ulcers but does not replace debridement, offloading, vascular optimization, or infection control, and should be avoided in malignant wounds, untreated osteomyelitis, or critical ischemia. The episode also highlights the drug’s history and future delivery innovations.

Forgotten Infection Friday- Buruli Ulcer vs Diabetic Foot: Lessons from a Painless Wound

This episode explores the rare Buruli (Buruli) ulcer caused by Mycobacterium ulcerans and its toxin mycolactone, which destroys tissue, suppresses immune signaling, and reduces pain, leading to delayed diagnosis and severe disability. It draws parallels with diabetic foot ulcers—both can progress silently beneath the skin—covers history, pathology, diagnosis (PCR, biopsy), treatment (antibiotics and surgery), and the key lesson: lack of pain does not mean lack of severity.

Why we use Saline vs. Sterile Water vs. Tap Water vs Seawater- Not all water is equal

In this episode Dr. G explains why 0.9% sterile saline is the preferred when using to cleanse   for diabetic foot ulcers, diving into osmosis, isotonicity, and how saline preserves cell function while avoiding tissue damage. Why we use saline, why tap water is controversial and what alternatives really do.  Dr G also covers the risks of seawater and tap water (including dangerous bacteria like Vibrio vulnificus and piped biofilms), when advanced cleansers such as hypochlorous acid are needed, and practical takeaways: avoid ocean and non-sterile water, use isotonic sterile saline or recommended wound cleansers.

Wound Intelligence Wednesday: Atraumatic Dressings for Diabetic Limbs

This episode explains traumatic dressing selection for diabetic wounds, emphasizing atraumatic (especially silicone-based) dressings that protect fragile peri-wound skin, preserve keratinocytes and capillaries, reduce inflammation and pain, and prevent re-injury during dressing removal. It covers risk assessment, dressing types and indications, contraindications, practical tips for removal and frequency, and the clinical importance of matching dressing choice to exudate and patient needs to support healing and avoid complications.

Beyond Closure/ Post Healing Maintenance : Inside the Long Remodeling Phase of Wound Healing

Dr. G explains why skin closure in diabetic foot ulcers is a transition, not a cure: the remodeling phase can last months to years, leaving the scar biologically weaker and at high risk of recurrence. He describes why peeling and color changes are often normal and how tensile strength gradually improves over time. The episode offers concise, practical guidance — daily foot checks, pressure offloading and appropriate footwear, gentle cleansing and moisturization, blood-sugar control, and multidisciplinary follow-up — to reduce re-ulceration and keep healed feet in remission.