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Prudovsky I, Kacer D, Lindner V, Rappold J, Carter DW. Tranexamic acid reduces inflammation, edema and burn wound conversion in a rodent model. Burns 2024; 50:947-956. [PMID: 38336496 PMCID: PMC11192045 DOI: 10.1016/j.burns.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024]
Abstract
Burn wound conversion is the observed process where superficial partial thickness burns convert into deep partial or full thickness burn injuries. This conversion process often involves surgical excision to achieve timely wound healing. Unfortunately, the pathophysiology of this phenomenon is multifactorial and poorly understood. Thus, a therapeutic intervention that may prevent secondary progression and cell death in burn-injured tissue is desirable. Recent work by our group and others has established that tranexamic acid (TXA) has significant anti-inflammatory properties in addition to its well-known anti-fibrinolytic effects. This study investigates TXA as a novel therapeutic treatment to mitigate burn wound conversion and reduce systemic inflammation. Sprague-Dawley rats were subjected to a hot comb burn contact injury. A subset of animals underwent a similar comb burn with an adjacent 30%TBSA contact injury. The interspaces represent the ischemic zones simulating the zone of stasis. The treatment group received injections of TXA (100 mg/kg) immediately after injury and once daily until euthanasia. Animals were harvested for analyses at 6 h and 7 days after injury. Full-thickness biopsies from the ischemic zones and lung tissue were assessed with established histological techniques. Plasma was collected for measurement of damage associated molecular patterns (DAMPs), and liver samples were used to study inflammatory cytokines expression. Treatment with TXA was associated with reduced burn wound conversion and decreased burn-induced systemic inflammatory response syndrome (SIRS). Lung inflammation and capillary leak were also significantly reduced in TXA treated animals. Future research will elucidate the underlying anti-inflammatory properties of TXA responsible for these findings.
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Affiliation(s)
- Igor Prudovsky
- Maine Health Institute for Research, 81 Research Drive, Scarborough, ME 04074, USA
| | - Doreen Kacer
- Maine Health Institute for Research, 81 Research Drive, Scarborough, ME 04074, USA
| | - Volkhard Lindner
- Maine Health Institute for Research, 81 Research Drive, Scarborough, ME 04074, USA
| | - Joseph Rappold
- Maine Health Institute for Research, 81 Research Drive, Scarborough, ME 04074, USA; Maine Medical Center, 22 Bramhall Street, Portland, ME 04105, USA
| | - Damien Wilson Carter
- Maine Health Institute for Research, 81 Research Drive, Scarborough, ME 04074, USA; Maine Medical Center, 22 Bramhall Street, Portland, ME 04105, USA.
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Yuan X, Duan X, Li Z, Yao B, Enhejirigala, Song W, Kong Y, Wang Y, Zhang F, Liang L, Zhu S, Zhang M, Zhang C, Huang S, Fu X. Collagen triple helix repeat containing-1 promotes functional recovery of sweat glands by inducing adjacent microvascular network reconstruction in vivo. BURNS & TRAUMA 2022; 10:tkac035. [PMID: 35937591 PMCID: PMC9346565 DOI: 10.1093/burnst/tkac035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 11/23/2022]
Abstract
Background Sweat glands (SGs) have low regenerative potential after severe burns or trauma and their regeneration or functional recovery still faces many obstacles. In practice, restoring SG function requires not only the structural integrity of the gland itself, but also its neighboring tissues, especially blood vessels. Collagen triple helix repeat containing-1 (CTHRC1) was first identified in vascular repair, and increasing reports showed a close correlation between cutaneous appendage specification, patterning and regeneration. The purpose of the present study was to clarify the role of CTHRC1 in SGs and their adjacent microvessels and find therapeutic strategies to restore SG function. Methods The SGs and their adjacent microvascular network of Cthrc1−/− mice were first investigated using sweat test, laser Doppler imaging, tissue clearing technique and transcriptome analysis. The effects of CTHRC1 on dermal microvascular endothelial cells (DMECs) were further explored with cell proliferation, DiI-labeled acetylated low-density lipoprotein uptake, tube formation and intercellular junction establishment assays. The effects of CTHRC1 on SG function restoration were finally confirmed by replenishing the protein into the paws of Cthrc1−/− mice. Results CTHRC1 is a key regulator of SG function in mice. At the tissue level, Cthrc1 deletion resulted in the disorder and reduction of the microvascular network around SGs. At the molecular level, the knockout of Cthrc1 reduced the expression of vascular development genes and functional proteins in the dermal tissues. Furthermore, CTHRC1 administration considerably enhanced SG function by inducing adjacent vascular network reconstruction. Conclusions CTHRC1 promotes the development, morphogenesis and function execution of SGs and their neighboring vasculature. Our study provides a novel target for the restoration or regeneration of SG function in vivo.
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Affiliation(s)
- Xingyu Yuan
- School of Medicine , Nankai University, 94 Wei Jin Road, Tianjin 300071, PR China
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Xianlan Duan
- School of Medicine , Nankai University, 94 Wei Jin Road, Tianjin 300071, PR China
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Zhao Li
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
| | - Bin Yao
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Academy of Medical Engineering and Translational Medicine, Tianjin University , 92 Weijin Road, Tianjin, 300072, PR China
| | - Enhejirigala
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- College of Graduate, Tianjin Medical University , Tianjin 300070, PR China
- Institute of Basic Medical Research, Inner Mongolia Medical University , Hohhot 010110, Inner Mongolia, PR China
| | - Wei Song
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
| | - Yi Kong
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
| | - Yuzhen Wang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Department of Burn and Plastic Surgery, Air Force Hospital of Chinese PLA Central Theater Command , Datong 037000, Shanxi, PR China
| | - Fanliang Zhang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
| | - Liting Liang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Shijun Zhu
- School of Medicine , Nankai University, 94 Wei Jin Road, Tianjin 300071, PR China
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Mengde Zhang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
| | - Chao Zhang
- School of Medicine , Nankai University, 94 Wei Jin Road, Tianjin 300071, PR China
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Sha Huang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
| | - Xiaobing Fu
- School of Medicine , Nankai University, 94 Wei Jin Road, Tianjin 300071, PR China
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department, PLA General Hospital , 28 Fu Xing Road, Beijing 100853, PR China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Chinese PLA General Hospital and PLA Medical College , Repair and Regeneration, , 51 Fu Cheng Road, Beijing 100048, PR China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 2019RU051 , Beijing 100048, PR China
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