Novel skin chamber for rat ischemic flap studies in regenerative wound repair

Yuan-Yu Hsueh, Duo Hsiang Wang, Tzu Chieh Huang, Ya Ju Chang, Wei Chi Shao, Tai Lan Tuan, Michael Warren Hughes, Chia-Ching Wu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: In plastic surgery, skin flap is an important approach to reconstructive wound repairs. The rat dorsal skin flap is a clinically relevant and popular animal model to investigate and evaluate flap survival and necrosis. Nonetheless, flap survival is often unstable with unpredictable outcomes, regardless of previous attempts at design modification. Methods & Results: In the present study, we report a novel flap chamber that provides stable and reproducible outcomes by separating the dorsal skin flap from its surrounding skin by in situ immobilization. The flap chamber blocks circulation that disturbs flap ischemia from both basal and lateral sides of the flap tissue. Demarcation of skin necrosis is macroscopically evident on the flap and supported by distinct changes in histological architecture under microscopic examination. The utility of the novel skin flap chamber is further proven by applying it to the examination of flap survival in streptozotocin-induced diabetic rats with an increase in skin necrosis. The flap chamber also affords size modifications where a narrower flap chamber increases ischemia and provides manipulable therapeutic windows for studying cell therapies. Accordingly, intradermal injection of endothelial cells 3 days before flap ischemia significantly increases the survival of skin flaps. Conclusions: The novel flap chamber not only may stabilize the skin flap and provide reproducible outcomes that overcome the shortfalls of the traditional ischemic flap but also may afford size modifications that support research designs and test therapeutic approaches to regenerative repair.

Original languageEnglish
Article number72
JournalStem Cell Research and Therapy
Volume7
Issue number1
DOIs
Publication statusPublished - 2016 May 17

Fingerprint

Rats
Skin
Repair
Wounds and Injuries
Necrosis
Ischemia
Intradermal Injections
Endothelial cells
Plastic Surgery
Streptozocin
Cell- and Tissue-Based Therapy
Immobilization
Surgery
Microscopic examination
Animals
Research Design
Endothelial Cells
Animal Models
Tissue
Therapeutics

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Molecular Medicine
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Cell Biology

Cite this

Hsueh, Yuan-Yu ; Wang, Duo Hsiang ; Huang, Tzu Chieh ; Chang, Ya Ju ; Shao, Wei Chi ; Tuan, Tai Lan ; Hughes, Michael Warren ; Wu, Chia-Ching. / Novel skin chamber for rat ischemic flap studies in regenerative wound repair. In: Stem Cell Research and Therapy. 2016 ; Vol. 7, No. 1.
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abstract = "Background: In plastic surgery, skin flap is an important approach to reconstructive wound repairs. The rat dorsal skin flap is a clinically relevant and popular animal model to investigate and evaluate flap survival and necrosis. Nonetheless, flap survival is often unstable with unpredictable outcomes, regardless of previous attempts at design modification. Methods & Results: In the present study, we report a novel flap chamber that provides stable and reproducible outcomes by separating the dorsal skin flap from its surrounding skin by in situ immobilization. The flap chamber blocks circulation that disturbs flap ischemia from both basal and lateral sides of the flap tissue. Demarcation of skin necrosis is macroscopically evident on the flap and supported by distinct changes in histological architecture under microscopic examination. The utility of the novel skin flap chamber is further proven by applying it to the examination of flap survival in streptozotocin-induced diabetic rats with an increase in skin necrosis. The flap chamber also affords size modifications where a narrower flap chamber increases ischemia and provides manipulable therapeutic windows for studying cell therapies. Accordingly, intradermal injection of endothelial cells 3 days before flap ischemia significantly increases the survival of skin flaps. Conclusions: The novel flap chamber not only may stabilize the skin flap and provide reproducible outcomes that overcome the shortfalls of the traditional ischemic flap but also may afford size modifications that support research designs and test therapeutic approaches to regenerative repair.",
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Novel skin chamber for rat ischemic flap studies in regenerative wound repair. / Hsueh, Yuan-Yu; Wang, Duo Hsiang; Huang, Tzu Chieh; Chang, Ya Ju; Shao, Wei Chi; Tuan, Tai Lan; Hughes, Michael Warren; Wu, Chia-Ching.

In: Stem Cell Research and Therapy, Vol. 7, No. 1, 72, 17.05.2016.

Research output: Contribution to journalArticle

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AU - Wang, Duo Hsiang

AU - Huang, Tzu Chieh

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AU - Tuan, Tai Lan

AU - Hughes, Michael Warren

AU - Wu, Chia-Ching

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AB - Background: In plastic surgery, skin flap is an important approach to reconstructive wound repairs. The rat dorsal skin flap is a clinically relevant and popular animal model to investigate and evaluate flap survival and necrosis. Nonetheless, flap survival is often unstable with unpredictable outcomes, regardless of previous attempts at design modification. Methods & Results: In the present study, we report a novel flap chamber that provides stable and reproducible outcomes by separating the dorsal skin flap from its surrounding skin by in situ immobilization. The flap chamber blocks circulation that disturbs flap ischemia from both basal and lateral sides of the flap tissue. Demarcation of skin necrosis is macroscopically evident on the flap and supported by distinct changes in histological architecture under microscopic examination. The utility of the novel skin flap chamber is further proven by applying it to the examination of flap survival in streptozotocin-induced diabetic rats with an increase in skin necrosis. The flap chamber also affords size modifications where a narrower flap chamber increases ischemia and provides manipulable therapeutic windows for studying cell therapies. Accordingly, intradermal injection of endothelial cells 3 days before flap ischemia significantly increases the survival of skin flaps. Conclusions: The novel flap chamber not only may stabilize the skin flap and provide reproducible outcomes that overcome the shortfalls of the traditional ischemic flap but also may afford size modifications that support research designs and test therapeutic approaches to regenerative repair.

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