Rapid Construction of Tissue-engineered Skin for Repairing Difficult-to-heal Wounds
Rapid Construction of Tissue-engineered Skin for Repairing Difficult-to-heal Wounds: A Multicenter Real-world Study
調査の概要
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Hu Zhicheng
- 電話番号:87755766-8265
- メール:huzhch5@mail.sysu.edu.cn
研究場所
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Guangdong
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Guangzhou、Guangdong、中国
- 募集
- The First Affiliated Hospital of Sun Yat-sen University
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コンタクト:
- The First Affiliated Hospital of Sun Yat-sen University
- 電話番号:87755766-8265
- メール:huzhch5@mail.sysu.edu.cn
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参加基準
適格基準
就学可能な年齢
- 子
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- All-age population
Wounds requiring surgical repair (single area 10-100 cm²): acute wounds (burns, traumatic defects, post-scar resection) OR chronic wounds (diabetic foot ulcers, pressure injuries, vascular ulcers)
Completed wound bed preparation (no necrotic tissue, infection controlled)
Signed informed consent and agreement to use tissue-engineered materials and long-term follow-up
Exclusion Criteria:
- History of allergy to allogeneic/xenogeneic tissue-engineered scaffolds or collagen materials
Severe immunosuppression (HIV/AIDS, long-term immunosuppressant use)
Malignant tumors, uncontrolled systemic infection (CRP > 50 mg/L), or organ failure (Child-Pugh Class C)
Mental illness preventing compliance with treatment or follow-up
Pregnant or lactating women
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:非ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的:Rapid Tissue-Engineered Skin Group
Rapid intraoperative construction of autologous EpiSCs-loaded scaffold + split-thickness skin graft (one-step or two-step procedure)
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Autologous split-thickness skin (0.15-0.2 mm) is harvested from the donor site at a donor-to-wound area ratio of 1:20-30.
The harvested skin is processed using a specialized cell sorter to isolate autologous epidermal stem cells (EpiSCs) with >93% viability within 30 minutes.
The cell suspension is adjusted to a concentration of ≥1×10⁶ cells/mL and loaded onto a tissue-engineered scaffold via spraying or immersion (3-5 minutes).
The cell-seeded scaffold is then applied to the wound bed.
Depending on wound condition: (1) One-step procedure: scaffold and a split-thickness skin graft (0.15-0.2 mm) are applied simultaneously; (2) Two-step procedure: scaffold is implanted first, followed by split-thickness skin graft at 14±3 days post-primary surgery.
Negative pressure wound therapy (-100 to -125 mmHg) is applied as needed.
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アクティブコンパレータ:Traditional Composite Skin Graft Group
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The same tissue-engineered scaffold (without cell loading) is used.
Autologous split-thickness skin graft (0.15-0.2 mm thickness) is harvested.
The acellular scaffold is applied to the debrided wound bed followed by coverage with the split-thickness skin graft.
The surgical procedure, postoperative wound care, negative pressure wound therapy (-100 to -125 mmHg when indicated), and follow-up protocol are identical to those in the experimental arm.
This comparator represents the current standard of care for composite skin grafting in the participating centers.
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Complete Wound Healing Rate
時間枠:At 4 weeks post-surgery
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The percentage of participants achieving complete wound epithelialization (defined as 100% re-epithelialization without drainage or dressing requirements)
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At 4 weeks post-surgery
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Wound Recurrence Rate
時間枠:3, 6, 12 months post-surgery
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Incidence of wound recurrence at the healed site
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3, 6, 12 months post-surgery
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Scar Quality Assessment
時間枠:4 weeks, 3, 6, 12 months post-surgery
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Scar quality is assessed using the Vancouver Scar Scale (VSS) and the Patient and Observer Scar Assessment Scale (POSAS) at 4 weeks, 3, 6, and 12 months post-surgery.
The VSS total score ranges from 0 to 13, with higher scores indicating worse scar outcome (assessing vascularity, pigmentation, pliability, and height).
The POSAS includes two separate subscales: the Observer Scale (6 items, each scored 1 to 10, total range 6-60) and the Patient Scale (6 items, each scored 1 to 10, total range 6-60).
For both POSAS subscales, higher scores represent worse scar outcome.
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4 weeks, 3, 6, 12 months post-surgery
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Functional Recovery
時間枠:6, 12 months post-surgery
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Sweat test for assessment of sweat gland regeneration
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6, 12 months post-surgery
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Mortality Rate
時間枠:3, 6, 12 months post-surgery
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All-cause mortality
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3, 6, 12 months post-surgery
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Amputation Rate
時間枠:3, 6, 12 months post-surgery
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Incidence of amputation (for chronic wound patients)
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3, 6, 12 months post-surgery
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Healing Trajectory
時間枠:1, 2, 3 weeks post-surgery
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Wound healing rate at week 1, 2, 3; and time to complete healing
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1, 2, 3 weeks post-surgery
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Safety Outcome
時間枠:From day of surgery through 12 months post-surgery
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Safety outcome is the incidence of postoperative complications (including infection, hematoma, and graft failure), adverse events, and serious adverse events, assessed from the day of surgery through study completion, an average of 12 months.
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From day of surgery through 12 months post-surgery
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- 2026P-ZD025
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