TY  - JOUR
A1  - Schneider, Verena
A1  - Kruse, Daniel
A1  - Bernardelli de Mattos, Ives
A1  - Zöphel, Saskia
A1  - Tiltmann, Kendra-Kathrin
A1  - Reigl, Amelie
A1  - Khan, Sarah
A1  - Funk, Martin
A1  - Bodenschatz, Karl
A1  - Groeber-Becker, Florian
T1  - A 3D in vitro model for burn wounds: monitoring of regeneration on the epidermal level
JF  - Biomedicines
N2  - Burns affect millions every year and a model to mimic the pathophysiology of such injuries in detail is required to better understand regeneration. The current gold standard for studying burn wounds are animal models, which are under criticism due to ethical considerations and a limited predictiveness. Here, we present a three-dimensional burn model, based on an open-source model, to monitor wound healing on the epidermal level. Skin equivalents were burned, using a preheated metal cylinder. The healing process was monitored regarding histomorphology, metabolic changes, inflammatory response and reepithelialization for 14 days. During this time, the wound size decreased from 25% to 5% of the model area and the inflammatory response (IL-1β, IL-6 and IL-8) showed a comparable course to wounding and healing in vivo. Additionally, the topical application of 5% dexpanthenol enhanced tissue morphology and the number of proliferative keratinocytes in the newly formed epidermis, but did not influence the overall reepithelialization rate. In summary, the model showed a comparable healing process to in vivo, and thus, offers the opportunity to better understand the physiology of thermal burn wound healing on the keratinocyte level.
KW  - skin models
KW  - open-source epidermis
KW  - wound model
KW  - impedance spectroscopy
KW  - wound physiology
KW  - burn wound
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-246068
SN  - 2227-9059
VL  - 9
IS  - 9
ER  - 
TY  - JOUR
A1  - Tuca, Alexandru-Cristian
A1  - Bernardelli de Mattos, Ives
A1  - Funk, Martin
A1  - Winter, Raimund
A1  - Palackic, Alen
A1  - Groeber-Becker, Florian
A1  - Kruse, Daniel
A1  - Kukla, Fabian
A1  - Lemarchand, Thomas
A1  - Kamolz, Lars-Peter
T1  - Orchestrating the dermal/epidermal tissue ratio during wound healing by controlling the moisture content
JF  - Biomedicines
N2  - A balanced and moist wound environment and surface increases the effect of various growth factors, cytokines, and chemokines, stimulating cell growth and wound healing. Considering this fact, we tested in vitro and in vivo water evaporation rates from the cellulose dressing epicite\(^{hydro}\) when combined with different secondary dressings as well as the resulting wound healing efficacy in a porcine donor site model. The aim of this study was to evaluate how the different rates of water evaporation affected wound healing efficacy. To this end, epicite\(^{hydro}\) primary dressing, in combination with different secondary dressing materials (cotton gauze, JELONET\(^◊\), AQUACEL\(^®\) Extra\(^™\), and OPSITE\(^◊\) Flexifix), was placed on 3 × 3 cm-sized dermatome wounds with a depth of 1.2 mm on the flanks of domestic pigs. The healing process was analyzed histologically and quantified by morphometry. High water evaporation rates by using the correct secondary dressing, such as cotton gauze, favored a better re-epithelialization in comparison with the low water evaporation resulting from an occlusive secondary dressing, which favored the formation of a new and intact dermal tissue that nearly fully replaced all the dermis that was removed during wounding. This newly available evidence may be of great benefit to clinical wound management.
KW  - bacterial cellulose dressing
KW  - secondary wound dressing
KW  - moisture balance
KW  - wound healing
KW  - in vivo experiments
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-275115
SN  - 2227-9059
VL  - 10
IS  - 6
ER  -