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Serwanja J, Wieland AC, Haubenhofer A, Brandstetter H, Schönauer E. A conserved strategy to attack collagen: The activator domain in bacterial collagenases unwinds triple-helical collagen. Proc Natl Acad Sci U S A 2024; 121:e2321002121. [PMID: 38593072 PMCID: PMC11032491 DOI: 10.1073/pnas.2321002121] [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: 11/29/2023] [Accepted: 03/14/2024] [Indexed: 04/11/2024] Open
Abstract
Bacterial collagenases are important virulence factors, secreted by several pathogenic Clostridium, Bacillus, Spirochaetes, and Vibrio species. Yet, the mechanism by which these enzymes cleave collagen is not well understood. Based on biochemical and mutational studies we reveal that collagenase G (ColG) from Hathewaya histolytica recognizes and processes collagen substrates differently depending on their nature (fibrillar vs. soluble collagen); distinct dynamic interactions between the activator and peptidase domain are required based on the substrate type. Using biochemical and circular dichroism studies, we identify the presumed noncatalytic activator domain as the single-domain triple helicase that unwinds collagen locally, transiently, and reversibly.
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Affiliation(s)
- Jamil Serwanja
- Department of Biosciences and Medical Biology, Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
- Center for Tumor Biology and Immunology (CTBI), Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
| | - Alexander C. Wieland
- Department of Biosciences and Medical Biology, Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
- Center for Tumor Biology and Immunology (CTBI), Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
| | - Astrid Haubenhofer
- Department of Biosciences and Medical Biology, Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
- Center for Tumor Biology and Immunology (CTBI), Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
| | - Hans Brandstetter
- Department of Biosciences and Medical Biology, Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
- Center for Tumor Biology and Immunology (CTBI), Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
| | - Esther Schönauer
- Department of Biosciences and Medical Biology, Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
- Center for Tumor Biology and Immunology (CTBI), Paris-Lodron University of Salzburg, SalzburgA-5020, Austria
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2
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Bao L, Chu R, Zhang L, Li J, Yang H, Pang H. The impact of early nutritional support on postoperative wound healing in patients with complex fractures: A meta-analysis review. Int Wound J 2024; 21:e14782. [PMID: 38468366 PMCID: PMC10928242 DOI: 10.1111/iwj.14782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 01/31/2024] [Indexed: 03/13/2024] Open
Abstract
Complex fractures present significant challenges in orthopaedic surgery, particularly in terms of postoperative wound healing. Nutritional status plays a crucial role in the recovery process, with early nutritional support potentially influencing wound healing outcomes. This meta-analysis aimed to assess the impact of early nutritional interventions on postoperative wound healing and scar formation in patients with complex fractures. From an initial pool of 1742 articles, 7 studies were selected for analysis. The results revealed that preoperative nutritional support significantly improved early wound healing, as indicated by lower REEDA scores (SMD = -14.06, 95% CI: [-16.79, -11.32], p < 0.01) 1 week post-surgery. Furthermore, there was a notable reduction in scar formation, as demonstrated by lower Manchester Scar Scale scores (SMD = -25.03, 95% CI: [-30.32, -19.74], p < 0.01) 3 months post-surgery. These findings highlight the importance of incorporating nutritional strategies into the management of complex fractures to optimize postoperative recovery.
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Affiliation(s)
- Lizhen Bao
- Department of Orthopaedic SurgeryTiantai Hospital of Traditional Chinese MedicineTaizhouZhejiangChina
| | - Ruzai Chu
- Department of Orthopaedic SurgeryThe People's Hospital of Tiantai CountyTaizhouZhejiangChina
| | - Lili Zhang
- Department of Trauma SurgeryThe People's Hospital of Tiantai CountyTaizhouZhejiangChina
| | - Jianchun Li
- Department of Orthopaedic SurgeryTiantai Hospital of Traditional Chinese MedicineTaizhouZhejiangChina
| | - Huiming Yang
- Department of Orthopaedic SurgeryTiantai Hospital of Traditional Chinese MedicineTaizhouZhejiangChina
| | - Huacong Pang
- Department of Emergency CenterThe People's Hospital of Tiantai CountyTaizhouZhejiangChina
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3
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Nascimento NS, Torres-Obreque KM, Oliveira CA, Rabelo J, Baby AR, Long PF, Young AR, Rangel-Yagui CDO. Enzymes for dermatological use. Exp Dermatol 2024; 33:e15008. [PMID: 38284197 DOI: 10.1111/exd.15008] [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: 07/12/2023] [Revised: 10/18/2023] [Accepted: 12/15/2023] [Indexed: 01/30/2024]
Abstract
Skin is the ultimate barrier between body and environment and prevents water loss and penetration of pathogens and toxins. Internal and external stressors, such as ultraviolet radiation (UVR), can damage skin integrity and lead to disorders. Therefore, skin health and skin ageing are important concerns and increased research from cosmetic and pharmaceutical sectors aims to improve skin conditions and provide new anti-ageing treatments. Biomolecules, compared to low molecular weight drugs and cosmetic ingredients, can offer high levels of specificity. Topically applied enzymes have been investigated to treat the adverse effects of sunlight, pollution and other external agents. Enzymes, with a diverse range of targets, present potential for dermatological use such as antioxidant enzymes, proteases and repairing enzymes. In this review, we discuss enzymes for dermatological applications and the challenges associated in this growing field.
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Affiliation(s)
- Natália Santos Nascimento
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Karin Mariana Torres-Obreque
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Camila Areias Oliveira
- Laboratory of Analytical Validation and Development, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, Brazil
| | - Jheniffer Rabelo
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - André Rolim Baby
- Department of Pharmacy, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Paul F Long
- Institute of Pharmaceutical Science, King's College London, London, UK
| | - Antony R Young
- St John's Institute of Dermatology, King's College London, London, UK
| | - Carlota de Oliveira Rangel-Yagui
- Department of Biochemical and Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
- Institute of Pharmaceutical Science, King's College London, London, UK
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Zhu G, Gao B, Fan J, Chen J, Su S, Yang X, Li B, Fang C. ICG-mediated fluorescence-assisted debridement to promote wound healing. PLoS One 2023; 18:e0291508. [PMID: 37733658 PMCID: PMC10513195 DOI: 10.1371/journal.pone.0291508] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/30/2023] [Indexed: 09/23/2023] Open
Abstract
The purpose of this study was to examine the efficacy of ICG-mediated fluorescence molecular imaging (FMI) in debridement of necrotic tissue. 96 wound-infected rats were randomly divided into control group, ICG group, excitation light (EL)group and FMI group for debridement of necrotic tissue (n = 24). (I) Control group: only debridement; (II) ICG group: ICG injection before debridement; (III) EL group: Debridement under EL; (IV) FMI group: Debridement guided by ICG-mediated FMI. On the 3rd, 6th, and 9th days, the wound tissues of the rats in each group were collected for histological examination, and the levels of serum interleukin-4 (IL-4) and interferon-γ (INF-γ) were analyzed. The wound healing rate, wound score and body weight of the rats in each group were followed up until the wound healed. The results showed that the infected wounds of the rats in the FMI group had significant fluorescence development. The level of serum IL-4 in the FMI group was higher than that in the other three groups on the 6th day (p<0.01), while the level of INF-γ was lower than that in the other three groups on the 6th and 9th day (p<0.05). The results of dynamic wound tissue H&E staining indicated that the wound healing in the FMI group was better than the other three groups. The in vivo follow-up results showed that the wound healing rate and wound score of the FMI group were better than the other three groups, and the growth of rats had no difference with the other groups. ICG-mediated FMI can achieve accurate imaging of necrotic tissue for debridement, and so can accelerate wound healing, which has good clinical application prospects.
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Affiliation(s)
- Gang Zhu
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Department of Hepatobiliary Pancreatic and Splenic Surgery, Luzhou People’s Hospital, Luzhou, China
| | - Benjian Gao
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Jun Fan
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Jianfei Chen
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Song Su
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Xiaoli Yang
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Bo Li
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
| | - Cheng Fang
- Department of General Surgery (Hepatobiliary Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, China
- Academician (Expert) Workstation of Sichuan Province, Luzhou, China
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5
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Xu Y, Hu K, Liu C, Du P, Zhou F, Lu Y, Fu Q, Xu J, Lyu G. Eschar dissolution and the immunoregulator effect of keratinase on burn wounds. Sci Rep 2023; 13:13238. [PMID: 37580372 PMCID: PMC10425458 DOI: 10.1038/s41598-023-39765-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 07/30/2023] [Indexed: 08/16/2023] Open
Abstract
At present, enzyme debridement preparation has shown a good curative effect on eschar removal of burn wounds. Keratinase has shown great potential in enzymatic debridement because of its good fibrin-degrading ability. In this study, the debridement of keratinase was examined by using a third degree burn wound model in rats. We observed the wound, and keratinase shortened the time of eschar dissolution after debridement. Histopathology and immunofluorescence staining showed that the eschar in the keratinase group became thinner, inflammatory cell infiltration in the wound increased, the fluorescence intensity of the macrophage surface marker CD68 increased, and the CD163/CD86 ratio increased. In bone marrow-derived macrophages (BMDMs), there was no significant difference in the activity of CCK-8 in cells in the keratinase group compared with the control group. The fluorescence intensity of the keratinase group was higher than that of the control group. At 12 h, the cell scratches were obviously closed. The number of migrated Transwell cells increased. Flow cytometry and immunofluorescence analysis showed increased expression of CD206 and Arg-1 and decreased expression of CD86 and iNOS. The gene expression of the Arg-1, iNOS and IL-10 was increased, as shown by qPCR. The secretion of IL-10 was increased and TNF-α was decreased, as shown by ELISA. We concluded that keratinase dissolution of eschar not only has a hydrolytic effect on eschar but may also affect immune regulation to enhance the migration and phagocytosis of macrophages, promote the polarization of macrophages, and further enhance the effect of eschar dissolution. Therefore, keratinase may have good prospects for the debridement of burn wounds.
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Affiliation(s)
- Yan Xu
- Wuxi Clinical Medical College of Nanjing University of Traditional Chinese Medicine, Wuxi, 214041, China
- Affiliated Hospital of Jiangnan University, Wuxi, 214041, China
| | - Kai Hu
- Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Chenyang Liu
- Affiliated Hospital of Jiangnan University, Wuxi, 214041, China
| | - Pan Du
- Jiangnan University, Wuxi, 214122, China
| | - Feifan Zhou
- Medical College of Nantong University, Nantong, 226000, China
| | - Yichi Lu
- Jiangnan University, Wuxi, 214122, China
| | - Qiuyan Fu
- Jiangnan University, Wuxi, 214122, China
| | - Jianmin Xu
- Affiliated Hospital of Jiangnan University, Wuxi, 214041, China.
| | - Guozhong Lyu
- Affiliated Hospital of Jiangnan University, Wuxi, 214041, China.
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6
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Quintero Sierra LA, Biswas R, Busato A, Conti A, Ossanna R, Conti G, Zingaretti N, Caputo M, Cuppari C, Parodi PC, Sbarbati A, Riccio M, De Francesco F. In Vitro Study of a Novel Vibrio alginolyticus-Based Collagenase for Future Medical Application. Cells 2023; 12:2025. [PMID: 37626834 PMCID: PMC10453626 DOI: 10.3390/cells12162025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/28/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Mesenchymal stem cells extracted from adipose tissue are particularly promising given the ease of harvest by standard liposuction and reduced donor site morbidity. This study proposes a novel enzymatic method for isolating stem cells using Vibrio alginolyticus collagenase, obtaining a high-quality product in a reduced time. Initially, the enzyme concentration and incubation time were studied by comparing cellular yield, proliferation, and clonogenic capacities. The optimized protocol was phenotypically characterized, and its ability to differentiate in the mesodermal lineages was evaluated. Subsequently, that protocol was compared with two Clostridium histolyticum-based collagenases, and other tests for cellular integrity were performed to evaluate the enzyme's effect on expanded cells. The best results showed that using a concentration of 3.6 mg/mL Vibrio alginolyticus collagenase allows extracting stem cells from adipose tissue after 20 min of enzymatic reaction like those obtained with Clostridium histolyticum-based collagenases after 45 min. Moreover, the extracted cells with Vibrio alginolyticus collagenase presented the phenotypic characteristics of stem cells that remain after culture conditions. Finally, it was seen that Vibrio alginolyticus collagenase does not reduce the vitality of expanded cells as Clostridium histolyticum-based collagenase does. These findings suggest that Vibrio alginolyticus collagenase has great potential in regenerative medicine, given its degradation selectivity by protecting vital structures for tissue restructuration.
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Affiliation(s)
- Lindsey Alejandra Quintero Sierra
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Reetuparna Biswas
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Alice Busato
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Anita Conti
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Riccardo Ossanna
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Giamaica Conti
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
| | - Nicola Zingaretti
- Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medical Area (DAME), University of Udine, 33100 Udine, Italy; (N.Z.); (P.C.P.)
| | - Michele Caputo
- Fidia Farmaceutici S.p.A., R&D Local Unit Fidia Research Sud, Contrada Pizzuta, 96017 Noto, Italy (C.C.)
| | - Christian Cuppari
- Fidia Farmaceutici S.p.A., R&D Local Unit Fidia Research Sud, Contrada Pizzuta, 96017 Noto, Italy (C.C.)
| | - Pier Camillo Parodi
- Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medical Area (DAME), University of Udine, 33100 Udine, Italy; (N.Z.); (P.C.P.)
- Research and Training Center in Regenerative Surgery, Accademia del Lipofilling, 61025 Montelabbate (PU), Italy
| | - Andrea Sbarbati
- Department of Neuroscience, Biomedicine, and Movement Sciences, Human Anatomy and Histology Section, University of Verona, 37134 Verona, Italy; (L.A.Q.S.); (R.B.); (A.B.); (A.C.); (R.O.); (G.C.); (A.S.)
- Research and Training Center in Regenerative Surgery, Accademia del Lipofilling, 61025 Montelabbate (PU), Italy
| | - Michele Riccio
- Research and Training Center in Regenerative Surgery, Accademia del Lipofilling, 61025 Montelabbate (PU), Italy
- Department of Reconstructive Surgery and Hand Surgery, AOU “Ospedali Riuniti”, 60126 Ancona, Italy
| | - Francesco De Francesco
- Department of Reconstructive Surgery and Hand Surgery, AOU “Ospedali Riuniti”, 60126 Ancona, Italy
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Learned A, Robinson SA, Nguyen TT. Comprehensive Care of Lower-Extremity Wounds. Surg Clin North Am 2023; 103:745-765. [PMID: 37455035 DOI: 10.1016/j.suc.2023.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
There are 5 common types of chronic nonhealing lower-extremity wounds: arterial, venous, diabetic foot ulcer, pressure, and mixed or atypical. Each chronic wound type has distinct features, and understanding the underlying cause will dictate the wound treatment plan. Here, the authors review the distinguishing wound properties for these 5 common chronic nonhealing lower-extremity wounds and outline a comprehensive treatment plan that addresses wound perfusion, debridement, infection control, moisture balance, and use of complementary advanced wound care products.
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Affiliation(s)
- Allison Learned
- Department of Surgery, Division of Vascular Surgery, University of Massachusetts Chan Medical School, 55 North Lake Avenue, Worcester, MA 01655, USA
| | - Sudie-Ann Robinson
- Department of Surgery, Division of Vascular Surgery, University of Massachusetts Chan Medical School, 55 North Lake Avenue, Worcester, MA 01655, USA
| | - Tammy T Nguyen
- Department of Surgery, Division of Vascular Surgery, University of Massachusetts Chan Medical School, 55 North Lake Avenue, Worcester, MA 01655, USA; University of Massachusetts Diabetes Center of Excellence.
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8
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Xu Y, Hu Q, Wei Z, Ou Y, Cao Y, Zhou H, Wang M, Yu K, Liang B. Advanced polymer hydrogels that promote diabetic ulcer healing: mechanisms, classifications, and medical applications. Biomater Res 2023; 27:36. [PMID: 37101201 PMCID: PMC10134570 DOI: 10.1186/s40824-023-00379-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/14/2023] [Indexed: 04/28/2023] Open
Abstract
Diabetic ulcers (DUs) are one of the most serious complications of diabetes mellitus. The application of a functional dressing is a crucial step in DU treatment and is associated with the patient's recovery and prognosis. However, traditional dressings with a simple structure and a single function cannot meet clinical requirements. Therefore, researchers have turned their attention to advanced polymer dressings and hydrogels to solve the therapeutic bottleneck of DU treatment. Hydrogels are a class of gels with a three-dimensional network structure that have good moisturizing properties and permeability and promote autolytic debridement and material exchange. Moreover, hydrogels mimic the natural environment of the extracellular matrix, providing suitable surroundings for cell proliferation. Thus, hydrogels with different mechanical strengths and biological properties have been extensively explored as DU dressing platforms. In this review, we define different types of hydrogels and elaborate the mechanisms by which they repair DUs. Moreover, we summarize the pathological process of DUs and review various additives used for their treatment. Finally, we examine the limitations and obstacles that exist in the development of the clinically relevant applications of these appealing technologies. This review defines different types of hydrogels and carefully elaborate the mechanisms by which they repair diabetic ulcers (DUs), summarizes the pathological process of DUs, and reviews various bioactivators used for their treatment.
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Affiliation(s)
- Yamei Xu
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Qiyuan Hu
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Zongyun Wei
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Yi Ou
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Youde Cao
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong Distinct, Chongqing, 400042, P.R. China
| | - Hang Zhou
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Mengna Wang
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China
| | - Kexiao Yu
- Department of Orthopedics, Chongqing Traditional Chinese Medicine Hospital, No. 6 Panxi Seventh Branch Road, Jiangbei District, Chongqing, 400021, P.R. China.
- Institute of Ultrasound Imaging of Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China.
| | - Bing Liang
- Department of Pathology, College of Basic Medicine, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China.
- Molecular Medicine Diagnostic and Testing Center, Chongqing Medical University, 1 Yixueyuan Road, Yuzhong Distinct, Chongqing, 400016, P.R. China.
- Department of Pathology, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong Distinct, Chongqing, 400042, P.R. China.
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9
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Sharma N, Vuppu S. Computational Modelling and Molecular Docking of Industrial Leather Enzymes. Mol Biotechnol 2023:10.1007/s12033-023-00689-z. [PMID: 36807269 DOI: 10.1007/s12033-023-00689-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/31/2023] [Indexed: 02/23/2023]
Abstract
Leather is one of the widely traded commodities globally. It is a strategically important sector for the economic and industrial development of the country. However, the leather industry is perceived as a highly polluting industry. It produces huge amounts of solid and liquid wastes, and if these wastes are not properly treated and disposed of, then it tends to deteriorate the quality of soil and water, as well as cause emanations of smell and noxious gases into the surrounding. The current paper provides information about industrial leather enzymes, primarily collagenase, tannase, and lecithinase. In this study, enzymes such as collagenase, tannase, and lecithinase had a pivotal role in leather industries and their action in the bioremediation of leather effluents was further analysed and docked with a diverse range of compounds (ligands), with an optimal binding affinity score was determined. All interactions between protein ligands were depicted, which will help us with future research. Furthermore, this method can be tested practically, and other parameters can be studied in the future. Further, applications of enzymes and their hydrolyse by-products have also been highlighted in a variety of industries, including the pharmaceutical, cosmetic, agricultural, medical, and food sectors. Subsequently, this finding provides an innovative and broader goal for various sectors in terms of sustainability, stabilisation, and identifying research gaps that can guide modern industries and research scientists.
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Affiliation(s)
- Nikita Sharma
- School of Bioscience and Technology, Department of Biotechnology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India
| | - Suneetha Vuppu
- School of Bioscience and Technology, Department of Biotechnology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.
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10
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Stratidakis N, Tagka A, Geronikolou SA, Giannakopoulos E, Panagiotopoulos A, Malachia E, Vitsos A, Karalis E, Dallas P, Stratigos A, Rallis M. Octenidine Versus Dispase Gels for Wound Healing After Cryosurgery Treatment in Patients with Basal Cell Carcinoma. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1425:591-601. [PMID: 37581832 DOI: 10.1007/978-3-031-31986-0_57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
For a specific group of patients with basal cell carcinoma (small, low risk), cryosurgery could be the suggested treatment, which results in the formation of an ulcer in the lesion area. The proteolytic enzymes' contribution to the wound healing is an ongoing research goal. Preclinical animal experiments in the Laboratory of the Pharmaceutical Technology Department of the National and Kapodistrian University of Athens have showed that a dose of 5 U/mL of dispase gel after the formation of tissue rashes, significantly promoted wound healing. Herein, a feasibility study in 16 patients enrolled by the First Department of Dermatology of Andreas Syggros Hospital was designed: 5 U/mL of dispase gel (once every 3 days) versus a drug reference containing octenidine (daily administration). The evaluation of the healing effect, safety, and tolerance was done on days 1 (cryosurgery), 2, 7, 21, and 60. The study end point was considered either the ulcer complete healing or the eighth week since treatment initiation. Wound healing was faster with dispase gel and hemoglobin reduced rapidly after the seventh day. Yet, hydration was higher in the control group. Our non-parametric analysis provides evidence that the dispase gel shows faster healing compared to the reference drug, in humans, meriting further investigation in larger human sample sizes before massive production of the product.
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Affiliation(s)
- Nektarios Stratidakis
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
| | - Anna Tagka
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece.
| | - Styliani A Geronikolou
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Efstathios Giannakopoulos
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Antonios Panagiotopoulos
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Evdokia Malachia
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Andreas Vitsos
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Karalis
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Paraskevas Dallas
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandros Stratigos
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Michail Rallis
- Division of Pharmaceutical Technology, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
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11
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Yuan B, Upton Z, Leavesley D, Fan C, Wang XQ. Vascular and Collagen Target: A Rational Approach to Hypertrophic Scar Management. Adv Wound Care (New Rochelle) 2023; 12:38-55. [PMID: 34328823 PMCID: PMC9595647 DOI: 10.1089/wound.2020.1348] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Significance: Hypertrophic scarring is a challenging issue for patients and clinicians. The prevalence of hypertrophic scarring can be up to 70% after burns, and patients suffer from pain, itching, and loss of joint mobility. To date, the exact mechanisms underlying hypertrophic scar formation are unclear, and clinical options remain limited. Recent Advances: Several studies have demonstrated that pathological scars are a type of hyperactive vascular response to wounding. Scar regression has been found to be accompanied by microvessel occlusion, which causes severe hypoxia, malnutrition, and endothelial dysfunction, suggesting the essential roles of microvessels in scar regression. Therefore, interventions that target the vasculature, such as intense pulsed light, pulsed dye lasers, vascular endothelial growth factor antibodies, and Endostar, represent potential treatments. In addition, the mass of scar-associated collagen is usually not considered by current treatments. However, collagen-targeted therapies such as fractional CO2 laser and collagenase have shown promising outcomes in scar treatment. Critical Issues: Traditional modalities used in current clinical practice only partially target scar-associated microvessels or collagen. As a result, the effectiveness of current treatments is limited and is too often accompanied by undesirable side effects. The formation of scars in the early stage is mainly affected by microvessels, whereas the scars in later stages are mostly composed of residual collagen. Traditional therapies do not utilize specific targets for scars at different stages. Therefore, more precise treatment strategies are needed. Future Directions: Scars should be classified as either "vascular-dominant" or "collagen-dominant" before selecting a treatment. In this way, strategies that are vascular-targeted, collagen-targeted, or a combination thereof could be recommended to treat scars at different stages.
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Affiliation(s)
- Bo Yuan
- Burns and Plastic Surgery Department, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Zee Upton
- Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - David Leavesley
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Chen Fan
- Skin Research Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China
- Correspondence: Chen Fan, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Xi-Qiao Wang
- Burns and Plastic Surgery Department, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
- Correspondence: Xi-Qiao Wang, Burns and Plastic Surgery Department, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, P.R. China
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12
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Cogo A, Bignozzi AC, Hermans MHE, Quint BJ, Snels JP, Schultz G. A desiccation compound as a biofilm- and necrosis-removing agent: a case series. J Wound Care 2022; 31:816-822. [DOI: 10.12968/jowc.2022.31.10.816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Objective: A new compound, Debrichem (DEBx Medical BV, the Netherlands), a topical desiccation agent (TDA), is an active gel that contains an acidic species with a potent hygroscopic action. When in contact with microorganisms and necrosis, rapid desiccation and carbonisation of the proteins in these microorganisms, as well as of the extracellular matrix of biofilms and necrosis, occurs. The resulting ‘precipitate’ rapidly dislodges from the wound bed, resulting in a clean wound which granulates, which is a prerequisite for healing by secondary intention. Method: In a retrospective study, a series of mostly large and hard-to-heal lesions of different aetiologies were treated with a one-time application of the TDA, followed by weekly dressing changes. Results: Of the total of 54 lesions included in this case series, 22 were diagnosed as venous leg ulcers (VLUs), 20 as diabetic foot ulcers (DFUs), nine as post-traumatic, hard-to-heal lesions, two as vascular ulcers and one as an ischaemic ulcer. All of the VLUs, 75% of the DFUs and all of the other lesions reached complete granulation. Conclusion: The use of a TDA may contribute to the consistent, fast and easy removal of both biofilms and necrosis, and hence to wound healing.
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Hu Y, Xiong Y, Tao R, Xue H, Chen L, Lin Z, Panayi AC, Mi B, Liu G. Advances and perspective on animal models and hydrogel biomaterials for diabetic wound healing. BIOMATERIALS TRANSLATIONAL 2022; 3:188-200. [PMID: 36654776 PMCID: PMC9840091 DOI: 10.12336/biomatertransl.2022.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/27/2022] [Accepted: 08/26/2022] [Indexed: 01/20/2023]
Abstract
Diabetic wounds are a common complication in diabetes patients. Due to peripheral nerve damage and vascular dysfunction, diabetic wounds are prone to progress to local ulcers, wound gangrene and even to require amputation, bringing huge psychological and economic burdens to patients. However, the current treatment methods for diabetic wounds mainly include wound accessories, negative pressure drainage, skin grafting and surgery; there is still no ideal treatment to promote diabetic wound healing at present. Appropriate animal models can simulate the physiological mechanism of diabetic wounds, providing a basis for translational research in treating diabetic wound healing. Although there are no animal models that can fully mimic the pathophysiological mechanisms of diabetic wounds in humans, it is vital to explore animal simulation models used in basic research and preclinical studies of diabetic wounds. In addition, hydrogel materials are regarded as a promising treatment for diabetic wounds because of their good antimicrobial activity, biocompatibility, biodegradation and appropriate mechanical properties. Herein, we review and discuss the different animal models used to investigate the pathological mechanisms of diabetic wounds. We further discuss the promising future application of hydrogel biomaterials in diabetic wound healing.
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Affiliation(s)
- Yiqiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Ranyang Tao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Ze Lin
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China
| | - Adriana C. Panayi
- Department of Plastic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China,Corresponding authors: Bobin Mi, ; Guohui Liu,
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China,Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, Hubei Province, China,Corresponding authors: Bobin Mi, ; Guohui Liu,
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Barambio J, García-Arranz M, Campos PV, Pinto JFV, Clemente LV, Gómez-Heras SG, Guadalajara H, García-Olmo D. Chemical Scalpel: An Experimental Collagenase-Based Treatment for Peritoneal Adhesions. BIOLOGY 2022; 11:biology11081159. [PMID: 36009786 PMCID: PMC9404777 DOI: 10.3390/biology11081159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/21/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022]
Abstract
(1) Background: Abdominal adhesions are a common disease appearing after any type of abdominal surgery and may prolong surgical time and cause intestinal obstruction, infertility, or chronic pain. We propose the use of intraperitoneal collagenase to perform chemical adhesiolysis based on the pathophysiology and histology of adhesions. (2) Methods: We generated an adhesion model with intraperitoneal polypropylene meshes. Four months later, we evaluated the efficacy of the treatment in blinded form, i.e., 0.05% collagenase vs. placebo at 37 °C for 20 min. Protocol 1: Ten rats with ten mesh fragments, in which an attempt was made to remove the maximum number of meshes in a 5-min period. Protocol 2: Six rats with four mesh fragments in the sides of the abdominal cavity in which adhesiolysis was performed using a device that measures burst pressure. (3) Results: Protocol 1: 42% efficacy in the collagenase group versus 8% in the control group (p < 0.013). Protocol 2: 188.25 mmHg (SD 69.65) in the collagenase group vs. 325.76 mmHg (SD 50.25) in the control group (p < 0.001). (4) Conclusions: Collagenase allows for the safe and effective chemical adhesiolysis in this experimental model of adhesions.
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Affiliation(s)
- Javier Barambio
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
- Correspondence: ; Tel.: +34-915504800
| | - Mariano García-Arranz
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
- Department of Surgery, Faculty of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Pedro Villarejo Campos
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
| | - Juan Felipe Vélez Pinto
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
| | - Luz Vega Clemente
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
| | - Soledad García Gómez-Heras
- Department of Human Histology, Faculty of Health Sciences, Rey Juan Carlos University, 28922 Madrid, Spain;
| | - Héctor Guadalajara
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
| | - Damián García-Olmo
- Fundación Jiménez Díaz University Hospital, 28033 Madrid, Spain; (M.G.-A.); (P.V.C.); (J.F.V.P.); (L.V.C.); (H.G.); (D.G.-O.)
- Department of Surgery, Faculty of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain
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15
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Bernardes MJC, Gonçalves RC, Carvalho CDS, Rosa LM, Ferreira AP, Vilela MS, Vinaud MC, Galdino Junior H, Lino Junior RDS. Hydrogel-based dressings in the treatment of partial thickness experimentally induced burn wounds in rats. Acta Cir Bras 2022; 37:e370401. [PMID: 35792743 PMCID: PMC9290765 DOI: 10.1590/acb370401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/11/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: To compare four commercially available hydrogel formulations in the healing
of partial thickness burns experimentally induced in rats. Methods: Wistar rats were used, and after the burn wound induction they were divided
into the following treatment groups: G1) NaCl 0.9%; G2) 1% silver
sulfadiazine; G3) Debrigel™; G4) Safgel™; G5) Dersani™; G6) Solosite™. The
animals were followed during seven, 14 and 30 days after the injury
induction. Morphometric, macroscopic and microscopic evaluations were
performed. Results: The treatment with Dersani™ induced better results during the inflammatory
and proliferative phases of the healing process (p<0.05). The animals
treated with Safgel™ presented better scaring in the remodeling phase
(p<0.05), and the treatment with Dersani™ and Solosite™ induced greater
wound closure (p<0.05). Conclusions: The hydrogel-based dressings presented beneficial outcomes in the healing of
burn wounds experimentally induced in rats due to their ability in maintain
the humidity of the wound, in removing the exudate, in promoting cell
migration and collagen production during the different phases of the healing
process.
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Affiliation(s)
- Milton Junior Cândido Bernardes
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Randys Caldeira Gonçalves
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | - Carolyna de Sousa Carvalho
- MSc. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Postgraduation Program in HostParasite Relationship - Goiânia (GO), Brazil
| | | | | | | | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
| | | | - Ruy de Souza Lino Junior
- PhD. Universidade Federal de Goiás - Tropical Pathology and Public Health Institute - Biosciences Department - Goiânia (GO), Brazil
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Emerging Approach for the Application of Hibiscus sabdariffa Extract Ointment in the Superficial Burn Care. Sci Pharm 2022. [DOI: 10.3390/scipharm90030041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Wound healing comprises organized events involving tissue repair and regeneration. The discovery of toll-like receptors (TLRs) sheds recent light on the mechanisms involved in initiating inflammatory responses throughout the healing cascades. Hibiscus sabdariffa (HS) components may exhibit a wound healing action, owing to their antioxidant and anti-inflammatory activities. This study was designed to investigate the early effects of HS loaded in an ointment base on wound healing, antioxidant, antimicrobial effects, burning intensity, and histopathological features on the rat burn model in comparison to the standard treatment, Iruxol® ointment. A burn injury model was used to evaluate the wound healing potency of the preparation. Rats were treated with ointments three times on the day of the induction of the burn. Findings revealed that the strong antioxidant properties of the HS-loaded ointment augmented the skin healing potential by stimulating biomarkers required for skin regeneration. HS repressed the burning-induced inflammation by the effective reduction in the levels of tumor necrosis factor α (TNF-α) and IL-6 through TLR4 protein inhibition. Topical HS downregulates transforming growth factor-beta (TGF-β) levels. HS extract possesses a potential bactericidal activity against highly resistant clinical isolates of Pseudomonas aeruginosa. Overall, this study proclaims that HS-loaded topical preparations could be a valuable product that serves as adjuvants to accelerate burn wound healing through inactivating the TLR4 pathway.
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17
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Pan Y, Fan Y, Lu Y, Peng S, Lin H, Deng Q. Molecular characterization of matrix metalloproteinase gene family across primates. Aging (Albany NY) 2022; 14:3425-3445. [PMID: 35444067 PMCID: PMC9085222 DOI: 10.18632/aging.204021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 04/12/2022] [Indexed: 11/25/2022]
Abstract
Deregulation of matrix metalloproteinases (MMPs) contributes considerably to cancers, psychiatric disorders, macular degeneration and bone diseases. The use of humans in the development of MMPs as prognostic biomarkers and therapeutic targets is complicated by many factors, while primate models can be useful alternatives for this purpose. Here, we performed genome-enabled identification of putative MMPs across primate species, and comprehensively investigated the genes. Phylogenetic topology of the MMP family showed each type formulates a distinct clade, and was further clustered to classes, largely agreeing with classification based on biochemical properties and domain organization. Across primates, the excess of candidate sites of positive selection was detected for MMP-19, in addition to 1-3 sites in MMP-8, MMP-10 and MMP-26. MMP-26 showed Ka/Ks value above 1 between human and chimpanzee copies. We observed two copies of MMP-19 in the old-world monkey genomes, suggesting gene duplication at the early stage of or prior to the emergence of the lineage. Furin-activatable MMPs demonstrate the most variable properties regarding Domain organization and gene structure. During human aging, MMP-11 showed gradually decreased expression in testis, so as MMP-2, MMP-14, MMP15 and MMP-28 in ovary, while MMP-7 and MMP-21 showed elevated expression, implying their distinct roles in different reproductive organs. Co-expression clusters were formed among human MMPs both within and across classes, and expression correlation was observed in MMP genes across primates. Our results illuminate the utilization of MMPs for the discovery of prognostic biomarkers and therapeutic targets for aging-related diseases and carry new messages on MMP classification.
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Affiliation(s)
- Yinglian Pan
- Department of Medical Oncology, The First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan, People's Republic of China
| | - Yadan Fan
- Department of Gynecology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
| | - Yanda Lu
- Department of Medical Oncology, The First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan, People's Republic of China
| | - Siyuan Peng
- Department of Gynecology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
| | - Haixue Lin
- Department of Gynecology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
| | - Qingchun Deng
- Department of Gynecology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570311, Hainan, People's Republic of China
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De Francesco F, De Francesco M, Riccio M. Hyaluronic Acid/Collagenase Ointment in the Treatment of Chronic Hard-to-Heal Wounds: An Observational and Retrospective Study. J Clin Med 2022; 11:jcm11030537. [PMID: 35159989 PMCID: PMC8836867 DOI: 10.3390/jcm11030537] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 01/27/2023] Open
Abstract
Background: Wound bed preparation is an important concept in clinical practice and is related to adequate debridement. The use of proteolytic enzymes is an established method of enzymatic wound debridement, especially in hard-to-heal ulcers that are unresponsive to normal healing procedures and progress. The TIME framework (tissue, inflammation/infection, moisture balance, and edge of wound) offers an appropriate strategy to eliminate resistance to healing, as well as maximizing the healing process. Maintenance debridement, as opposed to sporadic debridement, may be proposed in preserving an adequate wound bed towards complete recovery. Collagenase has been effective in debridement due to its ability to degrade collagen and elastin. In this clinical context, collagenase taken from Vibrio alginolitycus is the most favorably expressed enzymatic debriding agent. Methods: This retrospective observational study evaluates the efficacy of an ointment based on hyaluronic acid and collagenase (Bionect Start®), considering a reduced healing time and greater healing quality. We included 70 patients with chronic wounds of different etiologies, including diabetes mellitus (20), post-traumatic ulcers (35), chronic burns of degrees I and II (10), and pressure ulcers (5). We analyzed wound characteristics using the wound bed score (WBS) concept, healing time, as well as operator and patient satisfaction. Results: Frequency of debridement efficacy in terms of wound bed cleansing varied from 26% after 2 weeks to 93% after 4 weeks. We observed complete healing in 62 patients within an eight-week period. The overall operator and patient satisfaction after 8 weeks were 100% and 90%, respectively. Moreover, all patients reported less pain. Conclusions: A combined action of hyaluronic acid and collagenase ointment demonstrated a reduction in healing time while improving healing quality, with a decrease in pain.
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Affiliation(s)
- Francesco De Francesco
- Department of Reconstructive Surgery and Hand Surgery, AOU Ospedali Riuniti, Via Conca 71, 60126 Ancona, Italy;
- Correspondence: ; Tel.: +39-071-596-3945; Fax: +39-071-596-5297
| | | | - Michele Riccio
- Department of Reconstructive Surgery and Hand Surgery, AOU Ospedali Riuniti, Via Conca 71, 60126 Ancona, Italy;
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19
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Thomas DC, Tsu CL, Nain RA, Arsat N, Fun SS, Sahid Nik Lah NA. The role of debridement in wound bed preparation in chronic wound: A narrative review. Ann Med Surg (Lond) 2021; 71:102876. [PMID: 34745599 PMCID: PMC8554455 DOI: 10.1016/j.amsu.2021.102876] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/19/2021] [Accepted: 09/19/2021] [Indexed: 02/07/2023] Open
Abstract
Objective To provide an overview of the types of wound debridement and update the available scientific consensus on the effect of wound debridement. Methods The articles were searched through CINAHL, PubMed, Cochrane Library, and Medline database for relevant articles on all types of wound debridement. Articles included were all systematic review on the effectiveness of wound debridement-related outcome, published within the year 2017 until Aug 2021, in English. Results A total of seven scientific articles had been selected for review out of 318 screened. The authors reviewed a total of 318 titles and abstracts related to wound debridement effectiveness. Seven articles that were selected were narratively reviewed by two authors. The findings of the review were organized into autolytic, enzymatic, sharp, surgical, biological, and mechanical debridement methods and includes the advantages and disadvantages of each. The author further explored on the role of wound debridement according to wound bed preparation model. Articles were synthesized and organized based on the authors, year, total studies included in the systematic review, study range of year, total sample, debridement method, wound types, and findings. Conclusion Maggot debridement therapy showed a consistent finding in terms of effectiveness in debriding chronic wounds. The newer debridement method includes hydro-surgery, low-frequency ultrasonic and enzymatic collagenase debridement were getting more attention due to faster wound bed preparation and less painful. However, these newer method of debridements showed inconclusive findings and the patient safety was not clearly defined. A higher level of review is warranted in the future study. Maggot debridement therapy (MDT) showed a consistent positive effect in treating chronic wounds. New debridement methods that gaining more attention includes hydro-surgery, low-frequency ultrasonic and enzymatic collagenase debridement. Newer debridement method reported faster wound bed preparation and deemed to be less pain. Patient safety was not clearly defined in these newer debridement methods.
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Affiliation(s)
- Deena Clare Thomas
- Department of Nursing, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Chong Li Tsu
- Department of Nursing, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Rose A Nain
- Department of Nursing, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Norkiah Arsat
- Department of Nursing, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Soong Shui Fun
- Department of Nursing, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
| | - Nik Amin Sahid Nik Lah
- Department of Surgery, Faculty of Medicine and Health Sciences Universiti Malaysia Sabah, UMS Road, 88400, Kota Kinabalu, Sabah, Malaysia
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20
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Dasari N, Jiang A, Skochdopole A, Chung J, Reece EM, Vorstenbosch J, Winocour S. Updates in Diabetic Wound Healing, Inflammation, and Scarring. Semin Plast Surg 2021; 35:153-158. [PMID: 34526862 DOI: 10.1055/s-0041-1731460] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Diabetic patients can sustain wounds either as a sequelae of their disease process or postoperatively. Wound healing is a complex process that proceeds through phases of inflammation, proliferation, and remodeling. Diabetes results in several pathological changes that impair almost all of these healing processes. Diabetic wounds are often characterized by excessive inflammation and reduced angiogenesis. Due to these changes, diabetic patients are at a higher risk for postoperative wound healing complications. There is significant evidence in the literature that diabetic patients are at a higher risk for increased wound infections, wound dehiscence, and pathological scarring. Factors such as nutritional status and glycemic control also significantly influence diabetic wound outcomes. There are a variety of treatments available for addressing diabetic wounds.
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Affiliation(s)
- Nina Dasari
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Austin Jiang
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Anna Skochdopole
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Jayer Chung
- Division of Vascular Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Edward M Reece
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas.,Division of Plastic Surgery, Department of Surgery, Texas Children's Hospital, Houston, Texas
| | - Joshua Vorstenbosch
- Division of Plastic Surgery, Department of Surgery, McGill University, Montreal, Canada
| | - Sebastian Winocour
- Division of Plastic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas
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21
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Diabetic foot ulcers: prevention is better than treatment. ASIAN BIOMED 2021; 15:1-2. [PMID: 37551297 PMCID: PMC10388773 DOI: 10.2478/abm-2021-0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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García-Olmo D, Villarejo Campos P, Barambio J, Gomez-Heras SG, Vega-Clemente L, Olmedillas-Lopez S, Guadalajara H, Garcia-Arranz M. Intraperitoneal collagenase as a novel therapeutic approach in an experimental model of colorectal peritoneal carcinomatosis. Sci Rep 2021; 11:503. [PMID: 33436728 PMCID: PMC7803982 DOI: 10.1038/s41598-020-79721-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/07/2020] [Indexed: 01/07/2023] Open
Abstract
The usefulness of local collagenase in therapeutic approaches to solid tumors has been tested recently. In this study, we evaluate the safety and efficacy of intraperitoneal collagenase associated or not to mitomycin for treatment of colorectal peritoneal metastases in an experimental rat model. Using a fixed-dose procedure, we found that a dose of collagenase of 37 IU/mL administered for 15 min with a hyperthermia pump at 37.5 °C, both in isolation or associated to sequential treatment with intraperitoneal mitomycin, led to a macroscopic decrease in tumor volume as evaluated by the modified peritoneal cancer index (mPCI). Concerning the safety of the procedure, the animals showed no physiological or behavioral disorders during 8 weeks of follow-up. Local treatment for peritoneal metastases of colorectal origin with intraperitoneal collagenase has proved safe and effective in an experimental murine model. Therefore, the stroma-first approach by enzymatic breakdown of collagen from the tumor's extracellular matrix provides a new therapeutic target for colorectal peritoneal metastases.
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Affiliation(s)
- D García-Olmo
- New Therapies Laboratory, Health Research Institute-Fundación Jiménez Díaz University Hospital (IIS-FJD), Avda. Reyes Católicos, 2, 28040, Madrid, Spain.,Department of Surgery, Fundación Jiménez Díaz University Hospital, Avda. Reyes Católicos, 2, 28040, Madrid, Spain.,Department of Surgery, Universidad Autónoma de Madrid, C/Arzobispo Morcillo s/n, 28034, Madrid, Spain
| | - P Villarejo Campos
- Department of Surgery, Fundación Jiménez Díaz University Hospital, Avda. Reyes Católicos, 2, 28040, Madrid, Spain.
| | - J Barambio
- Department of Surgery, Fundación Jiménez Díaz University Hospital, Avda. Reyes Católicos, 2, 28040, Madrid, Spain
| | - S Garcia Gomez-Heras
- Department of Human Histology, Universidad Rey Juan Carlos, Avda de Atenas s/n, 28922, Alcorcón, Spain
| | - L Vega-Clemente
- New Therapies Laboratory, Health Research Institute-Fundación Jiménez Díaz University Hospital (IIS-FJD), Avda. Reyes Católicos, 2, 28040, Madrid, Spain
| | - S Olmedillas-Lopez
- New Therapies Laboratory, Health Research Institute-Fundación Jiménez Díaz University Hospital (IIS-FJD), Avda. Reyes Católicos, 2, 28040, Madrid, Spain
| | - H Guadalajara
- Department of Surgery, Fundación Jiménez Díaz University Hospital, Avda. Reyes Católicos, 2, 28040, Madrid, Spain.,Department of Surgery, Universidad Autónoma de Madrid, C/Arzobispo Morcillo s/n, 28034, Madrid, Spain
| | - M Garcia-Arranz
- New Therapies Laboratory, Health Research Institute-Fundación Jiménez Díaz University Hospital (IIS-FJD), Avda. Reyes Católicos, 2, 28040, Madrid, Spain.,Department of Surgery, Universidad Autónoma de Madrid, C/Arzobispo Morcillo s/n, 28034, Madrid, Spain
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23
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Eleftheriadou I, Samakidou G, Tentolouris A, Papanas N, Tentolouris N. Nonpharmacological Management of Diabetic Foot Ulcers: An Update. INT J LOW EXTR WOUND 2020; 20:188-197. [PMID: 33073653 DOI: 10.1177/1534734620963561] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetic foot ulcers (DFUs) are a common and serious complication of diabetes mellitus that is associated with increased morbidity and mortality, as well as substantial economic burden for the health care system. The standard of care for DFUs includes pressure off-loading, sharp debridement, and wound moisture balance, along with infection control and management of peripheral arterial disease. A variety of advanced modalities that target distinct pathophysiological aspects of impaired wound healing in diabetes are being studied as possible adjunct therapies for difficult to heal ulcers. These modalities include growth factors, stem cells, cultured fibroblasts and keratinocytes, bioengineered skin substitutes, acellular bioproducts, human amniotic membranes, oxygen therapy, negative pressure wound therapy, and energy therapies. Additionally, the use of advanced biomaterials and gene delivery systems is being investigated as a method of effective delivery of substances to the wound bed. In the present narrative review, we outline the latest advances in the nonpharmacological management of DFUs and summarize the efficacy of various standard and advanced treatment modalities.
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Affiliation(s)
- Ioanna Eleftheriadou
- First Department of Propaedeutic Internal Medicine and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital
| | - Georgia Samakidou
- First Department of Propaedeutic Internal Medicine and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital
| | - Anastasios Tentolouris
- First Department of Propaedeutic Internal Medicine and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital
| | | | - Nikolaos Tentolouris
- First Department of Propaedeutic Internal Medicine and Diabetes Center, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital
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24
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Abbade LPF, Frade MAC, Pegas JRP, Dadalti-Granja P, Garcia LC, Bueno Filho R, Parenti CEF. Consensus on the diagnosis and management of chronic leg ulcers - Brazilian Society of Dermatology. An Bras Dermatol 2020; 95 Suppl 1:1-18. [PMID: 33371937 PMCID: PMC7772605 DOI: 10.1016/j.abd.2020.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/03/2020] [Accepted: 06/07/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Chronic leg ulcers affect a large portion of the adult population and cause a significant social and economic impact, related to outpatient and hospital care, absence from work, social security expenses, and reduced quality of life. The correct diagnosis and therapeutic approach are essential for a favorable evolution. OBJECTIVE To gather the experience of Brazilian dermatologists, reviewing the specialized literature to prepare recommendations for the diagnosis and treatment of the main types of chronic leg ulcers. METHODS Seven specialists from six university centers with experience in chronic leg ulcers were appointed by the Brazilian Society of Dermatology to reach a consensus on the diagnosis and therapeutic management of these ulcers. Based on the adapted DELPHI methodology, relevant elements were considered in the diagnosis and treatment of chronic leg ulcers of the most common causes; then, the recent literature was analyzed using the best scientific evidence. RESULTS The following themes were defined as relevant for this consensus - the most prevalent differential etiological diagnoses of chronic leg ulcers (venous, arterial, neuropathic, and hypertensive ulcers), as well as the management of each one. It also included the topic of general principles for local management, common to chronic ulcers, regardless of the etiology. CONCLUSION This consensus addressed the main etiologies of chronic leg ulcers and their management based on scientific evidence to assist dermatologists and other health professionals and benefit the greatest number of patients with this condition.
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Affiliation(s)
- Luciana Patricia Fernandes Abbade
- Department of Infectious Diseases, Dermatology, Diagnostic Imaging and Radiotherapy, Faculty of Medicine, Universidade Estadual Paulista, Botucatu, SP, Brazil.
| | - Marco Andrey Cipriani Frade
- Department of Internal Medicine (Dermatology Division), Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - José Roberto Pereira Pegas
- Dermatology Service, Hospital Padre Bento de Guarulhos, Guarulhos, SP, Brazil; Discipline of Dermatology, Faculty of Medicine, Universidade da Cidade de São Paulo, São Paulo, SP, Brazil; Discipline of Dermatology, Faculty of Medicine, Jundiaí, SP, Brazil
| | - Paula Dadalti-Granja
- Department of Clinical Medicine (Discipline of Dermatology), Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - Lucas Campos Garcia
- Dermatology Service, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Roberto Bueno Filho
- Dermatology Service, Hospital das Clínicas, Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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25
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Hoversten KP, Kiemele LJ, Stolp AM, Takahashi PY, Verdoorn BP. Prevention, Diagnosis, and Management of Chronic Wounds in Older Adults. Mayo Clin Proc 2020; 95:2021-2034. [PMID: 32276784 DOI: 10.1016/j.mayocp.2019.10.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 10/11/2019] [Accepted: 10/17/2019] [Indexed: 11/18/2022]
Abstract
Chronic wounds are common, disproportionately affect older adults, and are likely to be encountered by providers across all specialties and care settings. All providers should be familiar with basic wound prevention, identification, classification, and treatment approach, all of which are outlined in this article.
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Affiliation(s)
| | | | - Anne M Stolp
- Department of Medicine, Division of Community Internal Medicine, Mayo Clinic, Rochester, MN
| | - Paul Y Takahashi
- Department of Medicine, Divisions of Community Internal Medicine and Geriatric Medicine/Gerontology, Mayo Clinic, Rochester, MN
| | - Brandon P Verdoorn
- Department of Medicine, Divisions of Community Internal Medicine and Geriatric Medicine/Gerontology, Mayo Clinic, Rochester, MN.
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26
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Perera E, Rodriguez-Viera L, Montero-Alejo V, Perdomo-Morales R. Crustacean Proteases and Their Application in Debridement. Trop Life Sci Res 2020; 31:187-209. [PMID: 32922675 PMCID: PMC7470474 DOI: 10.21315/tlsr2020.31.2.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Digestive proteases from marine organisms have been poorly applied to biomedicine. Exceptions are trypsin and other digestive proteases from a few cold-adapted or temperate fish and crustacean species. These enzymes are more efficient than enzymes from microorganism and higher vertebrates that have been used traditionally. However, the biomedical potential of digestive proteases from warm environment species has received less research attention. This review aims to provide an overview of this unrealised biomedical potential, using the debridement application as a paradigm. Debridement is intended to remove nonviable, necrotic and contaminated tissue, as well as fibrin clots, and is a key step in wound treatment. We discuss the physiological role of enzymes in wound healing, the use of exogenous enzymes in debridement, and the limitations of cold-adapted enzymes such as their poor thermal stability. We show that digestive proteases from tropical crustaceans may have advantages over their cold-adapted counterparts for this and similar uses. Differences in thermal stability, auto-proteolytic stability, and susceptibility to proteinase inhibitors are discussed. Furthermore, it is proposed that the feeding behaviour of the source organism may direct the evaluation of enzymes for particular applications, as digestive proteases have evolved to fill a wide variety of feeding habitats, natural substrates, and environmental conditions. We encourage more research on the biomedical application of digestive enzymes from tropical marine crustaceans.
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Affiliation(s)
- Erick Perera
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal, IATS-CSIC, Castellón, Valencia, Spain
| | | | - Vivian Montero-Alejo
- Department of Biochemistry, Center for Pharmaceuticals Research and Development, Havana, Cuba
| | - Rolando Perdomo-Morales
- Department of Biochemistry, Center for Pharmaceuticals Research and Development, Havana, Cuba
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27
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Pittinger TP, Curran D, Hermans MHE. The treatment of paediatric burns with concentrated surfactant gel technology: a case series. J Wound Care 2020; 29:S12-S17. [DOI: 10.12968/jowc.2020.29.sup6.s12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Objective: To assess the safety and efficacy of a surfactant-based technology for the management of burns. Method: In a retrospective review, paediatric patients with different types of burns were treated with the gel technology. In some patients, the treatment was combined with a topical antimicrobial agent. Primary objectives of the review were the assessment of healing, healing times and ease of use of the material. Results: The wounds of 15 paediatric patients with different types of burns, particularly with regard to depth and anatomical location, were evaluated using a retrospective chart review. It was found that the surfactant gel technology, with or without the topical antimicrobial agent, assisted in autolytic debridement, and that time to re-epithelialisation was short and within the range of those obtained with other established treatments. Conclusion: The number of patients and wounds in this evaluation is small but the study indicates that the gel technology provides a safe and effective way to treat smaller burns in paediatric patients.
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28
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Karim AS, Shaum K, Gibson AL. Indeterminate-Depth Burn Injury—Exploring the Uncertainty. J Surg Res 2020; 245:183-197. [DOI: 10.1016/j.jss.2019.07.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/31/2019] [Accepted: 07/19/2019] [Indexed: 01/08/2023]
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29
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Pham CH, Collier ZJ, Fang M, Howell A, Gillenwater TJ. The role of collagenase ointment in acute burns: a systematic review and meta-analysis. J Wound Care 2019; 28:S9-S15. [PMID: 30767636 DOI: 10.12968/jowc.2019.28.sup2.s9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE: A systematic review and meta-analysis was performed to summarise the state of the literature in regard to the efficacy and uses of clostridial collagenase ointment (CCO) in the burn patient. METHOD: A systematic review of articles available on PubMed, Scopus and OvidSP Medline was performed. Keywords used in the search process included burns, thermal injury, collagenase, enzymatic debridement, wound care. Reviews, case reports, independent abstracts, consensus and opinion papers were excluded. A meta-analysis was performed for articles fitting inclusion criteria. RESULTS: Following screening, six relevant articles were identified for systematic review. Few studies, with limited sample sizes, argue that CCO may be an effective debriding agent. It may also accelerate wound healing and avoid the pain associated with mechanical debridement. CCO lacks antimicrobial activity but the risk of burn wound infection does not appear to be significantly different than when using silver-impregnated products. CCO is more expensive than traditional wound care products but may help halt burn depth conversion and prevent the need for surgery. CONCLUSION: CCO may be a safe and effective debridement agent for burn wounds with respect to decreasing wound healing time and minimising pain without increasing the risk of infection. It should be used on a case-by-case basis due to its financial cost, which may be offset by its ability to manage burns non-operatively.
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Affiliation(s)
- Christopher H Pham
- Resident; Keck School of Medicine, University of Southern California, Los Angeles, US
| | - Zachary J Collier
- Resident; Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, US
| | - Mike Fang
- Biostatistician; Department of Population and Quantitative Health Sciences, Case Western Reserve University School of Medicine, Cleveland, US
| | - Anna Howell
- Resident; Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, US
| | - Timothy J Gillenwater
- Assistant Professor; Keck School of Medicine, University of Southern California, Los Angeles, US. Division of Plastic Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, US
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30
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Yuan M, Yin M, Zhang L, Feng J, Zhu J, Zhou Z, Shu B, Zhou F, Zhang F, Yin H, Wang X, Qi S, Wu J. Selective debridement of burn wounds using hydrosurgery system. Int Wound J 2019; 17:300-309. [PMID: 31782622 DOI: 10.1111/iwj.13270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 12/24/2022] Open
Abstract
In recent years, hydrosurgery is a technology that has been applied more and more in debridement procedures. However, the selectivity of hydrosurgery to cutaneous necrotic tissues has not been proved. This study was designed to investigate the possible tissue selectivity of hydrosurgery in the debridement in burn wounds. Deep partial-thickness burns were produced on the back of porcine, and 48 hours later, both burn wounds and normal skin were debrided using the hydrosurgery system. Then tissue samples were taken, and histological staining was performed and observed under microscope. Burn wound resection rates and the normal skin damaged rates were measured. Our result indicated that the burn wounds were significantly more sensitive than the normal skin when the water pressure produced by the hydrosurgery system was set between 3000 and 5000 psi (pounds per square inch), that is, the necrotic tissue portions were debrided more easily than the normal skin tissue. Based on these data, we suggest that 3000 to 5000 psi of water pressure in the hydrosurgery system has a skin tissue selectivity in burn wounds.
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Affiliation(s)
- Mingzhou Yuan
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Meifang Yin
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lijun Zhang
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jinghao Feng
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junyou Zhu
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ziheng Zhou
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Bin Shu
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fei Zhou
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Fangyingnan Zhang
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hanxiao Yin
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoyan Wang
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shaohai Qi
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jun Wu
- Department of Burn Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,Precision Medicine Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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31
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Zeng R, Lin C, Lin Z, Chen H, Lu W, Lin C, Li H. Approaches to cutaneous wound healing: basics and future directions. Cell Tissue Res 2018; 374:217-232. [PMID: 29637308 DOI: 10.1007/s00441-018-2830-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/09/2018] [Indexed: 02/05/2023]
Abstract
The skin provides essential functions, such as thermoregulation, hydration, excretion and synthesis of vitamin D. Major disruptions of the skin cause impairment of critical functions, resulting in high morbidity and death, or leave one with life-changing cosmetic damage. Due to the complexity of the skin, diverse approaches are needed, including both traditional and advanced, to improve cutaneous wound healing. Cutaneous wounds undergo four phases of healing. Traditional management, including skin grafts and wound dressings, is still commonly used in current practice but in combination with newer technology, such as using engineered skin substitutes in skin grafts or combining traditional cotton gauze with anti-bacterial nanoparticles. Various upcoming methods, such as vacuum-assisted wound closure, engineered skin substitutes, stem cell therapy, growth factors and cytokine therapy, have emerged in recent years and are being used to assist wound healing, or even to replace traditional methods. However, many of these methods still lack assessment by large-scale studies and/or extensive application. Conceptual changes, for example, precision medicine and the rapid advancement of science and technology, such as RNA interference and 3D printing, offer tremendous potential. In this review, we focus on the basics of wound treatment and summarize recent developments involving both traditional and hi-tech therapeutic methods that lead to both rapid healing and better cosmetic results. Future studies should explore a more cost-effective, convenient and efficient approach to cutaneous wound healing. Graphical abstract Combination of various materials to create advanced wound dressings.
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Affiliation(s)
- Ruijie Zeng
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Chuangqiang Lin
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Zehuo Lin
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Hong Chen
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Weiye Lu
- Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China
| | - Changmin Lin
- Department of Histology and Embryology, Shantou University Medical College, 22 Xinling Road, Shantou, 515041, Guangdong Province, China.
| | - Haihong Li
- Burn and Plastic Surgery Department, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong Province, China.
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32
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Waycaster C, Carter MJ, Gilligan AM, Mearns ES, Fife CE, Milne CT. Comparative cost and clinical effectiveness of clostridial collagenase ointment for chronic dermal ulcers. J Comp Eff Res 2017; 7:149-165. [PMID: 29076747 DOI: 10.2217/cer-2017-0066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Chronic dermal ulcers affect approximately 2.4-4.5 million people in the USA and are associated with loss of function, decreased quality of life and significant economic burden. Debridement is a critical component of wound care involving removal of nonviable tissue from chronic wounds to stimulate the granulation and epithelialization process. Clostridial collagenase ointment has been used as a method of wound debridement for more than 50 years and is currently the only enzymatic debriding ointment with US FDA approval. This review discusses the results of recent real-world studies that build upon the evidence demonstrating the clinical effectiveness, cost-effectiveness and safety of clostridial collagenase ointment across wound types and care settings.
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Affiliation(s)
| | | | | | | | | | - Catherine T Milne
- Connecticut Clinical Nursing Associates, LLC, Bristol, CT 06011, USA
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33
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Brandhorst D, Brandhorst H, Johnson PRV. Enzyme Development for Human Islet Isolation: Five Decades of Progress or Stagnation? Rev Diabet Stud 2017. [PMID: 28632819 DOI: 10.1900/rds.2017.14.22] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
In comparison to procedures used for the separation of individual cell types from other organs, the process of human pancreatic islet isolation aims to digest the pancreatic exocrine matrix completely without dispersing the individual cells within the endocrine cell cluster. This objective is unique within the field of tissue separation, and outlines the challenge of islet isolation to balance two opposing priorities. Although significant progress has been made in the characterization and production of enzyme blends for islet isolation, there are still numerous areas which require improvement. The ultimate goal of enzyme production, namely the routine production of a consistent and standardized enzyme blend, has still not been realized. This seems to be mainly the result of a lack of detailed knowledge regarding the structure of the pancreatic extracellular matrix and the synergistic interplay between collagenase and different supplementary proteases during the degradation of the extracellular matrix. Furthermore, the activation of intrinsic proteolytic enzymes produced by the pancreatic acinar cells, also impacts on the chance of a successful outcome of human islet isolation. This overview discusses the challenges of pancreatic enzymatic digestion during human islet isolation, and outlines the developments in this field over the past 5 decades.
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Affiliation(s)
- Daniel Brandhorst
- Nuffield Department of Surgical Sciences, University of Oxford, United Kingdom
| | - Heide Brandhorst
- Nuffield Department of Surgical Sciences, University of Oxford, United Kingdom
| | - Paul R V Johnson
- Nuffield Department of Surgical Sciences, University of Oxford, United Kingdom
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