Diyabetik Ayak Ülseri ve D Vitamini
Özet
Diabetes mellitus (DM) hastalarında ciddi bir komplikasyon olan diyabetik ayak ülserlerinin (DAÜ) patofizyolojisi ve tedavisinde D vitamininin rolü büyük önem taşımaktadır. Gelişmiş ülkelerde ampütasyonların en sık nedeni olan DAÜ, vasküler hasar, inflamasyon ve oksidatif stres gibi mekanizmalarla tetiklenmektedir. Bir steroid hormonu olan D vitamini; hücre proliferasyonu, bağışıklık sistemi regülasyonu ve antimikrobiyal peptit salınımı yoluyla yara iyileşmesini destekler. Klinik çalışmalar, düşük 25 OH vit D düzeylerinin ülserasyon şiddeti ve enfeksiyon riski ile doğrudan ilişkili olduğunu göstermektedir. Çeşitli araştırmalarda, DAÜ hastalarına uygulanan sistemik D vitamini takviyelerinin (oral veya intramüsküler) ülser boyutlarında küçülme sağladığı; glisemik kontrol (HbA1C), hs-CRP ve sedimentasyon gibi inflamatuar belirteçleri olumlu yönde etkilediği saptanmıştır. Sınırlı sayıdaki çalışma ise topikal D vitamini kullanımının yara kültürlerini steril hale getirmede başarılı olabileceğini düşündürmektedir. Sonuç olarak, D vitamini eksikliğinin düzeltilmesi DAÜ gelişimini önlemede ve iyileşme sürecini hızlandırmada kritik bir klinik yaklaşım sunmakla birlikte, bu tedavilerin etkinliğini doğrulamak adına daha geniş katılımlı ve prospektif klinik çalışmalara ihtiyaç duyulmaktadır.
Diabetes mellitus (DM) is associated with diabetic foot ulcers (DFU), severe complications driven by vascular damage, inflammation, and oxidative stress, where vitamin D plays a significant role in pathophysiology and treatment. As a steroid hormone, vitamin D promotes wound healing by modulating cell proliferation, regulating immune responses, and stimulating the release of antimicrobial peptides. Clinical data demonstrates that low 25-hydroxyvitamin D levels inversely correlate with ulcer severity and microbial infection risks. Various studies highlight that systemic vitamin D supplementation—whether through periodic high-dose oral regimens or single intramuscular injections—significantly reduces ulcer size and lowers crucial inflammatory and metabolic markers, including HbA1C, hs-CRP, and erythrocyte sedimentation rates. Furthermore, preliminary evidence suggests that topical vitamin D applications can aid in sterilizing wound cultures. Consequently, managing vitamin D deficiency represents a vital clinical strategy to prevent ulcer progression and optimize healing outcomes, though further large-scale, prospective clinical trials remain necessary to standardize these therapeutic benefits.
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