Ren Guo1,2, Shuaihua Li3, Hansong Xia4, Zhicai Feng1, Qiyu Tang1, Cheng Peng1. 1. Department of Plastic Surgery, the Third Xiangya Hospital, Central South University, Changsha, China. 2. Department of Pharmacy, the Third Xiangya Hospital, Central South University, Changsha, China. 3. Department of Cosmetic and Plastic Surgery, the First People's Hospital of Chenzhou, Chenzhou, China. 4. Department of Orthopedics, the Third Xiangya Hospital, Central South University, Changsha, China.
Abstract
Objective: To achieve better therapeutic results in burn wound infections and to examine alternatives to antibiotics, we designed this study to elaborate the role of myeloperoxidase (MPO) on infected burn wounds in rats. Approach: We compared chemical properties as well as bacteriostatic ability of MPO in different concentrations with NeutroPhase. Subsequently, we applied MPO (MPO group), NeutroPhase (NeutroPhase group), NaCl+H2O2 (NaCl+H2O2 group), or NaCl (control group) on rat dorsal burn wounds inoculated with methicillin-resistant Staphylococcus aureus (MRSA). Their effects on MRSA-colonized wounds were evaluated by microscopy, histologic section, and Western blot. Results: MPO produced more H+ and HClO-, leading to a more acidic environment. Moreover, MPO inhibited the growth of MRSA more intensely after 6 h of inoculation ex vivo. In vivo the open wound rate in the MPO group was significantly lower, while the contraction rate and epithelialization rate of MPO group were higher than that of the control group, NaCl+H2O2 group, and NeutroPhase group on day 20. The hematoxylin and eosin staining of MPO group showed better wound healing than other groups. More vascular endothelial growth factor (VEGF) was expressed in wound tissue of MPO group by Western blot. Innovation: This is the first study to use MPO for MRSA-colonized burn wound therapy. Conclusion: MPO displayed more effective bacteriostatic ability, possibly beneficial for MRSA-colonized wound healing. Copyright 2019, Mary Ann Liebert, Inc., publishers.
Objective: To achieve better therapeutic results in burn wound infections and to examine alternatives to antibiotics, we designed this study to elaborate the role of myeloperoxidase (MPO) on infected burn wounds in rats. Approach: We compared chemical properties as well as bacteriostatic ability of MPO in different concentrations with NeutroPhase. Subsequently, we applied MPO (MPO group), NeutroPhase (NeutroPhase group), NaCl+H2O2 (NaCl+H2O2 group), or NaCl (control group) on rat dorsal burn wounds inoculated with methicillin-resistant Staphylococcus aureus (MRSA). Their effects on MRSA-colonized wounds were evaluated by microscopy, histologic section, and Western blot. Results:MPO produced more H+ and HClO-, leading to a more acidic environment. Moreover, MPO inhibited the growth of MRSA more intensely after 6 h of inoculation ex vivo. In vivo the open wound rate in the MPO group was significantly lower, while the contraction rate and epithelialization rate of MPO group were higher than that of the control group, NaCl+H2O2 group, and NeutroPhase group on day 20. The hematoxylin and eosin staining of MPO group showed better wound healing than other groups. More vascular endothelial growth factor (VEGF) was expressed in wound tissue of MPO group by Western blot. Innovation: This is the first study to use MPO for MRSA-colonized burn wound therapy. Conclusion:MPO displayed more effective bacteriostatic ability, possibly beneficial for MRSA-colonized wound healing. Copyright 2019, Mary Ann Liebert, Inc., publishers.
Authors: J P Gaut; G C Yeh; H D Tran; J Byun; J P Henderson; G M Richter; M L Brennan; A J Lusis; A Belaaouaj; R S Hotchkiss; J W Heinecke Journal: Proc Natl Acad Sci U S A Date: 2001-10-02 Impact factor: 11.205
Authors: Hendrik Jan Ankersmit; Thomas Haider; Maria Laggner; Marie-Therese Lingitz; Dragan Copic; Martin Direder; Katharina Klas; Daniel Bormann; Alfred Gugerell; Bernhard Moser; Christine Radtke; Stefan Hacker; Michael Mildner Journal: Sci Rep Date: 2022-01-31 Impact factor: 4.379