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Liu Y, Zhao H, Yu J, Liao D, Peng J, Chen C, Huang Y, Chen C, Li Z, Wijaya WA, Zhao Z, Chen Z. A Novel Laboratory-Based Strategy for Single Adipocyte and Adipose-Derived Stem Cells Extraction for Transplantation: An Experimental Research. Aesthetic Plast Surg 2024:10.1007/s00266-024-04383-6. [PMID: 39340681 DOI: 10.1007/s00266-024-04383-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Accepted: 09/03/2024] [Indexed: 09/30/2024]
Abstract
BACKGROUND Autologous fat grafting is widely used in plastic surgery. However, its main limitation is the low survival rate of fat grafts after transplantation. Transplantation of single adipocytes in combination with adipose-derived stem cells (ADSCs) could largely preserve the activity of the fat and improve graft survival. OBJECTIVE To verify the long-term survival rate of single adipocyte graft in vivo and its viable fat morphology for future fat grafting. METHODS Healthy adipose tissue was harvested and disassociated using fat dissociation solution, the Single-cell Suspension Preparation System (SSPS) was used to obtain a mixture of single adipocytes, ADSCs and stromal vascular fraction (SVF), and the structure of single adipocytes was verified by cell mask red and DAPI double staining. Nine male Balb/c nude mice were used, and three different graft volumes were established (0.05, 0.1 and 0.2 ml). For each mouse, four sites were selected for transplantation, one for macrofat and the other three for single adipocytes, and different transplant volumes 30, 60 and 90 days after transplantation. In each period, 3 mice were selected to measure the volume of fat graft. RESULTS Double staining with cell mask red and DAPI confirmed that the nucleus was identified intracellularly, which also indicated that the adipocytes in the single-cell suspension were structurally complete. When evaluating the transplantation, the groups with a volume of 0.05 ml and 0.2 ml performed better in the single-cell fat group in all transplantation periods, the group with a volume of 0.1 ml performed better in the single-cell group in the 30- and 60-day transplantation, and the differences were significant (P<0.05). CONCLUSION In this study, the SSPS was used to obtain a new transplant material containing single adipocytes and ADSCs by enzymatic hydrolysis of adipose tissue and converted into single cells. It effectively improved the survival rate of fat grafting and the long-term effect of transplantation. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Affiliation(s)
- Yu Liu
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Hanxing Zhao
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Jiaying Yu
- Chengdu DosSense Biotech Co., LTD, Chengdu, People's Republic of China
| | - Dongsheng Liao
- Chengdu DosSense Biotech Co., LTD, Chengdu, People's Republic of China
| | - Jingming Peng
- Chengdu DosSense Biotech Co., LTD, Chengdu, People's Republic of China
| | - Changjin Chen
- TCM Regulating metabolic diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu City, Sichuan Province, People's Republic of China
| | - Yeqian Huang
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Chiaoju Chen
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Zhengyong Li
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Wilson Adrian Wijaya
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China
| | - Ziyi Zhao
- TCM Regulating metabolic diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu City, Sichuan Province, People's Republic of China.
| | - Zhixing Chen
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, No.37 Guoxue Alley, Wuhou District, Chengdu City, Sichuan Province, People's Republic of China.
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Carr H, Asaad M, Wu Y, Branch-Brooks C, Zhang Q, Hematti P, Hanson SE. Differential Secretomes of Processed Adipose Grafts, the Stromal Vascular Fraction, and Adipose-Derived Stem Cells. Stem Cells Dev 2024; 33:477-483. [PMID: 39030836 DOI: 10.1089/scd.2024.0071] [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] [Indexed: 07/22/2024] Open
Abstract
There are multiple methods to prepare lipoaspirate for autologous fat transfer; however, graft retention remains unpredictable. The purpose of this study was to compare the cellular and protein composition of adipose grafts and the stromal vascular fraction (SVF) resulting from three common techniques to prepare adipose grafts. Adipose grafts were harvested from healthy donors and processed via three techniques: centrifugation (C), a single-filter (SF) device, and a double-filtration (DF) system. Part of each graft was analyzed or further processed to isolate the SVF. Cell viability, surface markers, cytokine, and growth factors were compared between the graft and SVF as well as adipose-derived stem cells (ASCs). Overall, we found variations across the three processing techniques and among the graft components (ASCs, SVF, and fat). Cell viability within the grafts was similar (94.6%, 92.3%, and 93.6%; P = 0.93). The trend was a greater percentage of ASCs from SF versus DF or centrifugation (6.95%, 4.63%, and 1.93%, respectively, P = 0.06). Adipogenic markers (adiponectin and leptin) were similar among all three grafts (P = 0.45). Markers of tissue remodeling were greatest in the SVF compared with fat and ASCs, regardless of processing technique. There was higher relative expression of MMP-9 (2×), Extracellular matrix metalloproteinase inducer (EMMPRIN) (2.5×), endoglin (5×), and IL-8 (1.5×) in the SVF (P < 0.005). Our study identified differences in cytokine expression in adipose grafts and the SVF, particularly in cytokines important in inflammation and wound healing. These secretomes may impact graft retention and fat necrosis and have the potential implications in cell-assisted lipotransfer. There were no significant differences between the final products of any of the processing techniques.
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Affiliation(s)
- Hannah Carr
- Medicine and Biological Sciences Division, The University of Chicago, Chicago, Illinois, USA
| | - Malke Asaad
- MD Anderson Cancer Center, The University of Texas, Houston, Texas, USA
| | - Yewen Wu
- MD Anderson Cancer Center, The University of Texas, Houston, Texas, USA
| | | | - Qixu Zhang
- MD Anderson Cancer Center, The University of Texas, Houston, Texas, USA
| | - Peiman Hematti
- The Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Summer E Hanson
- Medicine and Biological Sciences Division, The University of Chicago, Chicago, Illinois, USA
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Kim J, Tran VVT, Hong KY, Chang H. Effect of Injectable Acellular Adipose Matrix on Soft Tissue Reconstruction in a Murine Model. Aesthetic Plast Surg 2024; 48:2210-2219. [PMID: 38499876 PMCID: PMC11150185 DOI: 10.1007/s00266-024-03924-3] [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: 12/09/2023] [Accepted: 02/09/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND The extracellular matrix isolated from adipose tissue, known as acellular adipose matrix (AAM), represents a novel biomaterial. AAM functions as a scaffold that not only supports stem cell proliferation and differentiation but also induces adipogenesis and angiogenesis. This study aims to investigate the volumetric effects and microenvironmental changes associated with injectable AAM in comparison to conventional fat grafting. METHODS AAM was manufactured from fresh human abdominoplasty fat using a mechanically modified method and then transformed into an injectable form. Lipoaspirate was harvested employing the Coleman technique. A weight and volume study was conducted on athymic nude mice by injecting either injectable AAM or lipoaspirate into the scalp (n=6 per group). After eight weeks, graft retention was assessed through weight measurement and volumetric analysis using micro-computed tomography (micro-CT) scanning. Histological analysis was performed using immunofluorescence staining for perilipin and CD31. RESULTS Injectable AAM exhibited similar weight and volume effects in murine models. Histological analysis revealed comparable inflammatory cell presence with minimal capsule formation when compared to conventional fat grafts. Adipogenesis occurred in both AAM-injected and conventional fat graft models, with no significant difference in the blood vessel area (%) between the two. CONCLUSIONS In summary, injectable AAM demonstrates effectiveness comparable to conventional fat grafting concerning volume effects and tissue regeneration in soft tissue reconstruction. This promising allogeneic injectable holds the potential to serve as a safe and effective "Off-the-Shelf" alternative in both aesthetic and reconstructive clinical practices. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Jaewoo Kim
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Plastic and Reconstructive Surgery, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Vinh Vuong The Tran
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
- Hi-Tech Center, Vinmec Healthcare System, Hanoi, Vietnam
| | - Ki Yong Hong
- Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea.
| | - Hak Chang
- Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, 03080, Seoul, Republic of Korea.
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Tian Y, Wang X, Sun Y, Xiong X, Zeng W, Yang K, Zhao H, Deng Y, Song D. NPTX1 Mediates the Facilitating Effects of Hypoxia-Stimulated Human Adipocytes on Adipose-Derived Stem Cell Activation and Autologous Adipose Graft Survival Rate. Aesthetic Plast Surg 2024:10.1007/s00266-024-04118-7. [PMID: 38789811 DOI: 10.1007/s00266-024-04118-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 04/25/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Autologous adipose tissue is an ideal material for soft tissue filling and transplantation; however, high volumes of fat absorption over time lead to a relatively low overall survival percentage. The survival and differentiation of adipose-derived stem cells (ADSCs) in the transplanted microenvironment might improve adipose graft survival. Adipocytes have been reported to affect ADSC activation. However, its underlying mechanisms remain unclear. METHODS Human ADSCs were incubated in a culture medium supplemented with hypoxic or normoxic conditioned culture medium (CM) derived from human adipocytes. Neuronal Pentraxin 1 (NPTX1) was overexpressed or knocked down in human adipocytes using an overexpression vector (NPTX1 OE) or small interfering RNA (siRNA) transfection, respectively. ADSC differentiation and paracrine secretion were assessed. Nude mice were implanted with human adipocytes and ADSCs. The adipose tissue was subsequently evaluated by histological analysis. RESULTS CM from hypoxic-stimulated human adipocytes significantly facilitated the differentiation ability and paracrine levels of ADSCs. NPTX1 was significantly up-regulated in human adipocytes exposed to hypoxic conditions. In vitro, CM derived from hypoxia-stimulated human adipocytes or NPTX1-overexpressing human adipocytes exposed to normoxia promoted ADSC differentiation and paracrine; after silencing NPTX1, the facilitating effects of hypoxia-treated human adipocytes on ADSC activation were eliminated. Similarly, in vivo, the NPTX1 OE + normoxia-CM group saw improved histological morphology and fat integrity, less fibrosis and inflammation, and increased vessel numbers compared with the OE NC + normoxia-CM group; the adipocyte grafts of the si-NC + hypoxia-CM group yielded the most improved histological morphology, fat integrity, and the most vessel numbers. However, these enhancements of ADSC activation and adipose graft survival were partially abolished by NPTX1 knockdown in human adipocytes. CONCLUSION NPTX1 might mediate the facilitating effects of hypoxia-stimulated human adipocytes on ADSC activation, thereby improving adipose tissue survival rate after autologous fat transplantation and the effectiveness of autologous fat transplantation through promoting ADSC activation. LEVEL OF EVIDENCE III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Yi Tian
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Xiancheng Wang
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.
| | - Yang Sun
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Xiang Xiong
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Weiliang Zeng
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Kai Yang
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Hongli Zhao
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Yiwen Deng
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Dandan Song
- Department of Plastic and Aesthetic (Burn) Surgery, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
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Tran VVT, Hong KY, Jin X, Chang H. Histological Comparison of Nanofat and Lipoconcentrate: Enhanced Effects of Lipoconcentrate on Adipogenesis and Angiogenesis. Aesthetic Plast Surg 2024; 48:752-763. [PMID: 37648930 DOI: 10.1007/s00266-023-03583-w] [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: 06/16/2023] [Accepted: 07/26/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Nanofat and lipoconcentrate contain adipose-derived stem cells and growth factors, and have wide clinical applications in the regenerative field. This study aimed to investigate the microenvironmental changes associated with nanofat and lipoconcentrate. METHODS Conventional fat, nanofat, or lipoconcentrate (0.2 mL each, n = 5 per group) were injected subcutaneously into the dorsal flanks of athymic nude mice. The graft weights were measured at postoperative week 4; the grafts and their overlying skin were used for histological analyses. RESULTS Weights of the lipoconcentrate grafts were significantly greater than those of the conventional fat (p < 0.05) and nanofat (p < 0.01) grafts. There was no significant difference in inflammation, oil cysts, and fibrosis between the conventional fat and nanofat groups. Histological examination of the lipoconcentrate grafts showed less macrophage infiltration and the formation of fibrosis and oil cysts. Additionally, adipogenesis and angiogenesis were induced more in the lipoconcentrate grafts than in the nanofat grafts (p < 0.01). Lipoconcentrate and nanofat improved dermal thickness (p < 0.001 and p < 0.01, respectively, versus the baseline). CONCLUSION Lipoconcentrate grafts had greater volume and shape retention than conventional fat and nanofat grafts. They had better histological structure and acted as scaffolds for adipogenesis and angiogenesis. Both products showed regenerative effects on dermal thickness; however, only lipoconcentrate grafts had the required volume and regenerative effects, allowing it to serve as a novel adipose-free grafting method for facial rejuvenation and contouring. NO LEVEL ASSIGNED This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Vinh Vuong The Tran
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Ki Yong Hong
- Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Xian Jin
- Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hak Chang
- Department of Plastic and Reconstructive Surgery, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
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Li W, Chen X, Zou F, He X. Extracellular Vesicles Derived From Hypoxia-Treated Human Adipose Stem Cells Increase Proliferation and Angiogenic Differentiation in Human Adipose Stem Cells. Aesthet Surg J 2023; 43:NP924-NP933. [PMID: 37158152 DOI: 10.1093/asj/sjad139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Adipose-derived stem cells (ADSCs) are crucial in cell-assisted lipotransfer (CAL). ADSC-derived exosomes could improve the survival of CAL. Almost all relevant research now ignores ADSCs in favor of studying the proangiogenic potential of extracellular vesicles (EVs) on human umbilical vein endothelial cells (HUVECs). OBJECTIVES Given the significance of ADSCs in CAL, the authors sought to verify that EVs from ADSCs under hypoxia treatment can enhance the angiogenic potential of ADSCs. METHODS EVs were harvested from human ADSCs (hADSCs) under normoxia and hypoxia. A Cell Counting Kit-8 (CCK-8) assay was used to measure the proliferation of hADSCs. By examining the expression of CD31, vascular endothelial growth factor receptor 2, and vascular endothelial growth factor, the pro-angiogenic differentiation potential was assessed. Moreover, a tube formation experiment was carried out to evaluate the pro-angiogenic differentiation potential. RESULTS Hypoxic EVs showed more significant pro-proliferative and pro-angiogenic potential. Angiogenesis was more vigorous in hADSCs treated with hypoxic EVs than in those treated with nomorxic EVs. The hADSCs treated with hypoxic EVs expressed higher angiogenic markers, according to real-time polymerase chain reaction (RT-PCR) and Western blot analysis, which revealed more angiogenic marker expression in hypoxic EV-treated hADSCs. The same result was demonstrated by tube formation on Matrigel in vitro. CONCLUSIONS Hypoxic EVs significantly increased the proliferation and angiogenic differentiation potential of hADSCs. Hypoxic EV-treated ADSCs may be beneficial to CAL and prevascularized tissue-engineered constructs.
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Chen X, Zhang R, Li D, Zhang Q, Xu Z, Xu F, Li Y, Li T. Ear reconstruction research using animal models: The effect of fat grafting on costal cartilage stents. Int J Pediatr Otorhinolaryngol 2022; 153:111016. [PMID: 34974275 DOI: 10.1016/j.ijporl.2021.111016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/21/2021] [Accepted: 12/25/2021] [Indexed: 11/16/2022]
Abstract
OBJECT For congenital microtia patients with a depressed mastoid area, it is unclear whether autologous fat grafting to fill the depressed area of the cheek will affect the survival of the subsequent grafted costal cartilage stent. An animal model was used for in vivo research to provide guidance for clinical applications. METHODS Autologous costal cartilage was implanted in nude mice. Fat samples were collected at different time points and histological examination performed to analyze the activity of chondrocytes and the deposition of the chondrocyte matrix. RESULTS This nude mouse fat transplantation model study showed that there were statistical differences in chondrocyte viability between the fat filling group and the control group, but there was no statistical difference in the effect on collagen content. CONCLUSION Transplanting fat reduces the viability of chondrocytes, but has little effect on collagen matrix deposition.
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Affiliation(s)
- Xia Chen
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Ruhong Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Datao Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China.
| | - Qun Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Zhicheng Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Feng Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Yiyuan Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Tianya Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, China
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Molitor M, Trávníčková M, Měšťák O, Christodoulou P, Sedlář A, Bačáková L, Lucchina S. The Influence of High and Low Negative Pressure Liposuction and Various Harvesting Techniques on the Viability and Function of Harvested Cells-a Systematic Review of Animal and Human Studies. Aesthetic Plast Surg 2021; 45:2379-2394. [PMID: 33876289 DOI: 10.1007/s00266-021-02249-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 03/16/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND An understanding of fat grafting methodology, techniques and patient-related factors is crucial when considering fat grafting. Multiple factors can influence the success of a fat graft and consequently the outcome of the procedure. The aim of this systematic review is to elucidate the influence of negative pressure and various techniques of fat harvesting on the viability and function of cells, particularly adipocytes and adipose-derived stem cells. METHODS We conducted a literature search from 1975 to 2020 using the PubMed bibliography, ScienceDirect, SCOPUS and the Google Scholar databases which produced 168,628 articles on the first pass. After applying all the exclusion criteria by two independent reviewers, we were left with 21 articles (level IV of Oxford Centre for Evidence-Based Studies and Grade C of Grade Practice Recommendation from the American Society of Plastic Surgeons) on which this review is based. RESULTS From 11 studies focused on different negative pressures, no one found using high negative pressure advantageous. Summarising 13 studies focused on various harvesting techniques (excision, syringe, and pump-machine), most often equal results were reported, followed by excision being better than either syringe or liposuction. CONCLUSION From our systematic review, we can conclude that the low negative pressure seems to yield better results and that the excision seems to be the most sparing method for fat graft harvesting. However, we have to point out that this conclusion is based on a very limited number of statistically challengeable articles and we recommend well-conducted further research. LEVEL OF EVIDENCE III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Martin Molitor
- Department of Plastic Surgery, First Faculty of Medicine, Charles University and Na Bulovce Hospital, Budinova 67/2, 180 81, Prague 8-Liben, Czech Republic.
| | - Martina Trávníčková
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 4-Krc, Czech Republic
| | - Ondřej Měšťák
- Department of Plastic Surgery, First Faculty of Medicine, Charles University and Na Bulovce Hospital, Budinova 67/2, 180 81, Prague 8-Liben, Czech Republic
| | - Petros Christodoulou
- Department of Plastic Surgery, First Faculty of Medicine, Charles University and Na Bulovce Hospital, Budinova 67/2, 180 81, Prague 8-Liben, Czech Republic
| | - Antonín Sedlář
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 4-Krc, Czech Republic
| | - Lucie Bačáková
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague 4-Krc, Czech Republic
| | - Stefano Lucchina
- Hand Unit, General Surgery Department, Locarno's Regional Hospital, Via Ospedale 1, 6600, Locarno, Switzerland
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Individualized Bioengineered Flap Design and the Importance of Oxygenation. Plast Reconstr Surg 2021; 147:723e-724e. [PMID: 33761510 DOI: 10.1097/prs.0000000000007727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Consecutive Bilateral Breast Reconstruction Using Stacked Abdominally Based and Posterior Thigh Free Flaps. Plast Reconstr Surg 2021; 147:294-303. [PMID: 33165290 DOI: 10.1097/prs.0000000000007548] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Multiple perforator flap breast reconstruction is an option that avoids implants in selected patients with minimal donor tissue. The technique addresses the need for additional skin to help create a breast envelope with more natural ptosis and additional volume to help create a body-appropriate breast mound while avoiding serial fat grafting. Using four flaps for the reconstruction of two breasts (bilateral stacked flap reconstruction) has recently become feasible with the advancement of microsurgical techniques, increased experience with alternative perforator flaps, and use of co-surgery. In this article, we describe our early experience with bilateral stacked flap breast reconstruction. METHODS From January of 2014 to October of 2018, the senior co-surgeons performed 50 consecutive bilateral stacked flap operations at a single institution. All reconstructions were performed in delayed fashion with a mean operative time of 10 hours. Most breasts (94 percent) were reconstructed with a deep inferior epigastric perforator flap combined with a profunda artery perforator flap. Most flap microanastomoses (91.5 percent) were performed directly with internal mammary vessels. The larger of the two flaps was typically placed inferiorly (66 percent), but there was significant inset variability. RESULTS Of 200 flaps, five were lost (2.5 percent). Seven take-backs were needed for a flap-related concern, which included two negative explorations and a flap salvage. The most common non-flap-related complication was a thigh wound (17 total, eight requiring a procedure). CONCLUSION The authors' early experience suggests that bilateral stacked flap breast reconstruction is a powerful tool that can be performed with an acceptable microsurgical risk and an acceptable complication profile in highly selected patients. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, IV.
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Abstract
One of the earliest reported cases of autologous fat grafting (AFG) was by Neuber in 1893 and consisted of the transfer of small lobules of fat from the upper arm for cicatrical depression of the face. He advocated the use of smaller grafts, noting that pieces larger than the size of a bean would form cysts. In 1895, Czerny excised a lumbar lipoma and transplanted it to the chest for breast reconstruction. Since these early reports, the knowledge base around AFG has expanded exponentially, as illustrated by the other papers within this special topic. As we embark on the next phase of AFG in the clinical setting, there are several directions which are near-clinical translation. This paper discusses future directions in fat grafting that build on optimization of our current techniques as clinical indications expand, such as supplementing purified lipoaspirate and the associated regulatory burden, or deconstructing adipose tissue to selectively use adipose graft components for a variety of regenerative indications.
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Affiliation(s)
- Summer E Hanson
- Department of Surgery, University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
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Yu F, Witman N, Yan D, Zhang S, Zhou M, Yan Y, Yao Q, Ding F, Yan B, Wang H, Fu W, Lu Y, Fu Y. Human adipose-derived stem cells enriched with VEGF-modified mRNA promote angiogenesis and long-term graft survival in a fat graft transplantation model. Stem Cell Res Ther 2020; 11:490. [PMID: 33213517 PMCID: PMC7678328 DOI: 10.1186/s13287-020-02008-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022] Open
Abstract
Background Fat grafting, as a standard treatment for numerous soft tissue defects, remains unpredictable and technique-dependent. Human adipose-derived stem cells (hADSCs) are promising candidates for cell-assisted therapy to improve graft survival. As free-living fat requires nutritional and respiratory sources to thrive, insufficient and unstable vascularization still impedes hADSC-assisted therapy. Recently, cytotherapy combined with modified mRNA (modRNA) encoding vascular endothelial growth factor (VEGF) has been applied for the treatment of ischemia-related diseases. Herein, we hypothesized that VEGF modRNA (modVEGF)-engineered hADSCs could robustly enhance fat survival in a fat graft transplantation model. Methods hADSCs were acquired from lipoaspiration and transfected with modRNAs. Transfection efficiency and expression kinetics of modRNAs in hADSCs were first evaluated in vitro. Next, we applied an in vivo Matrigel plug assay to assess the viability and angiogenic potential of modVEGF-engineered hADSCs at 1 week post-implantation. Finally, modVEGF-engineered hADSCs were co-transplanted with human fat in a murine model to analyze the survival rate, re-vascularization, proliferation, fibrosis, apoptosis, and necrosis of fat grafts over long-term follow-up. Results Transfections of modVEGF in hADSCs were highly tolerable as the modVEGF-engineered hADSCs facilitated burst-like protein production of VEGF in both our in vitro and in vivo models. modVEGF-engineered hADSCs induced increased levels of cellular proliferation and proangiogenesis when compared to untreated hADSCs in both ex vivo and in vivo assays. In a fat graft transplantation model, we provided evidence that modVEGF-engineered hADSCs promote the optimal potency to preserve adipocytes, especially in the long-term post-transplantation phase. Detailed histological analysis of fat grafts harvested at 15, 30, and 90 days following in vivo grafting suggested the release of VEGF protein from modVEGF-engineered hADSCs significantly improved neo-angiogenesis, vascular maturity, and cell proliferation. The modVEGF-engineered hADSCs also significantly mitigated the presence of fibrosis, apoptosis, and necrosis of grafts when compared to the control groups. Moreover, modVEGF-engineered hADSCs promoted graft survival and cell differentiation abilities, which also induced an increase in vessel formation and the number of surviving adipocytes after transplantation. Conclusion This current study demonstrates the employment of modVEGF-engineered hADSCs as an advanced alternative to the clinical treatment involving soft-tissue reconstruction and rejuvenation.
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Affiliation(s)
- Fei Yu
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Nevin Witman
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Dan Yan
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Siyi Zhang
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Meng Zhou
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Yan Yan
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Qinke Yao
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China
| | - Feixue Ding
- Department of Plastic Surgery, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Bingqian Yan
- Department of Pediatric Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.,Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Huijing Wang
- Department of Pediatric Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.,Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Wei Fu
- Department of Pediatric Cardiothoracic Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China. .,Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Yang Lu
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China.
| | - Yao Fu
- Department of Ophthalmology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200011, China.
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Discussion: Breast Reconstruction Using a Three-Dimensional Absorbable Mesh Scaffold and Autologous Fat Grafting: A Composite Strategy Based on Tissue-Engineering Principles. Plast Reconstr Surg 2020; 146:414e-415e. [PMID: 32969998 DOI: 10.1097/prs.0000000000007175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hong KY. Fat grafts enriched with adipose-derived stem cells. Arch Craniofac Surg 2020; 21:211-218. [PMID: 32867409 PMCID: PMC7463121 DOI: 10.7181/acfs.2020.00325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
Autologous fat grafts are widely used in soft-tissue augmentation and reconstruction. To reduce the unpredictability of fat grafts and to improve their long-term survival, cell-assisted lipotransfer (CAL) was introduced. In this alternative method, autologous fat is mixed and grafted with stromal vascular fraction cells or adipose-derived stem/stromal cells (ASCs). In regenerative medicine, ASCs exhibit excellent therapeutic potential and are also simple to harvest. Although the efficacy of CAL has been demonstrated in experimental and clinical research, studies on its safety in terms of oncologic risk have reported inconclusive results. In order to establish CAL as a viable stem cell therapeutic approach, it will be necessary to demonstrate its oncologic safety in basic and clinical studies. Doing so could transform the paradigm of clinical strategy and practice for the treatment of a wide variety of diseases.
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Affiliation(s)
- Ki Yong Hong
- Department of Plastic and Reconstructive Surgery, Dongguk University Ilsan Hospital, Goyang, Korea
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Pelle-Ceravolo M, Angelini M. Properly Diluted Fat (PDF): An Easy and Safe Approach to Periocular Fat Grafting. Aesthet Surg J 2020; 40:19-33. [PMID: 30753276 DOI: 10.1093/asj/sjz039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The main challenge of periocular fat grafting is the risk of contour irregularities, especially in the lower eyelid. Injection of diluted fat can decrease the likelihood of poor contour. OBJECTIVES The authors developed a simple method of periocular fat grafting in which the fat was harvested through unconventional cannulas and diluted before the injection to avoid the risk of contour irregularities. METHODS A retrospective study was conducted on 200 patients who underwent fat grafting to the periocular region. Lipoaspirate was obtained through a 0.5-mm multiple-hole cannula and then was centrifuged. A solution of 70% fat was prepared (ie, properly diluted fat [PDF]) with saline and infranatant fluid as the diluent. The recipient site was tunnelized with a 1.2-mm cannula, and PDF was transferred utilizing a 1.2-mm cannula containing a single 1-mm hole. Aesthetic improvement was ascertained from pre- and postoperative photographs evaluated by 3 examiners. RESULTS A total of 164 (82%) patients received follow-up 6 months postoperatively, and 83 of these patients (41.5%) returned for monitoring 1 year postoperatively. Nearly all patients had improvement in periocular contour, but variable loss of volume was observed by 1 year. Patients who presented initially with scleral show often had noticeable improvement. At 1 year, only 3 patients experienced contour irregularities comprising soft bulges, similar to fat hernias. Two patients showed fat accumulation after substantial weight gain later than 1 year postoperatively. CONCLUSIONS Preparation and periocular delivery of PDF by the described techniques yield good contour with a low risk of visible masses occurrence. LEVEL OF EVIDENCE: 4
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Avril P, Vidal L, Barille-Nion S, Le Nail LR, Redini F, Layrolle P, Pinault M, Chevalier S, Perrot P, Trichet V. Epinephrine Infiltration of Adipose Tissue Impacts MCF7 Breast Cancer Cells and Total Lipid Content. Int J Mol Sci 2019; 20:ijms20225626. [PMID: 31717935 PMCID: PMC6888424 DOI: 10.3390/ijms20225626] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 10/31/2019] [Accepted: 11/04/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Considering the positive or negative potential effects of adipocytes, depending on their lipid composition, on breast tumor progression, it is important to evaluate whether adipose tissue (AT) harvesting procedures, including epinephrine infiltration, may influence breast cancer progression. METHODS Culture medium conditioned with epinephrine-infiltrated adipose tissue was tested on human Michigan Cancer Foundation-7 (MCF7) breast cancer cells, cultured in monolayer or in oncospheres. Lipid composition was evaluated depending on epinephrine-infiltration for five patients. Epinephrine-infiltrated adipose tissue (EI-AT) or corresponding conditioned medium (EI-CM) were injected into orthotopic breast carcinoma induced in athymic mouse. RESULTS EI-CM significantly increased the proliferation rate of MCF7 cells Moreover EI-CM induced an output of the quiescent state of MCF7 cells, but it could be either an activator or inhibitor of the epithelial mesenchymal transition as indicated by gene expression changes. EI-CM presented a significantly higher lipid total weight compared with the conditioned medium obtained from non-infiltrated-AT of paired-patients. In vivo, neither the EI-CM or EI-AT injection significantly promoted MCF7-induced tumor growth. CONCLUSIONS Even though conditioned media are widely used to mimic the secretome of cells or tissues, they may produce different effects on tumor progression, which may explain some of the discrepancy observed between in vitro, preclinical and clinical data using AT samples.
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Affiliation(s)
- Pierre Avril
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
| | - Luciano Vidal
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
| | - Sophie Barille-Nion
- CRCINA, INSERM, Université d’Angers, Université de Nantes, F-44035 Nantes, France;
| | - Louis-Romée Le Nail
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
| | - Françoise Redini
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
| | - Pierre Layrolle
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
| | - Michelle Pinault
- INSERM Université de Tours, UMR1069, Nutrition, Croissance et Cancer, F-37032 Tours, France; (M.P.); (S.C.)
| | - Stéphane Chevalier
- INSERM Université de Tours, UMR1069, Nutrition, Croissance et Cancer, F-37032 Tours, France; (M.P.); (S.C.)
| | - Pierre Perrot
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
- CHU de Nantes, Service de Chirurgie Plastique et des Brûlés, F-44035 Nantes, France
- Correspondence: ; Tel.: +33-2-40-08-73-02
| | - Valérie Trichet
- INSERM, Université de Nantes, UMR1238, Phy-Os, Sarcomes osseux et remodelage des tissus calcifiés, F-44035 Nantes, France; (P.A.); (L.V.); (L.-R.L.N.); (F.R.); (P.L.); (V.T.)
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Suszynski TM, Rohrich RJ, Sieber DA, Boyd TG, Thornton JF, Teotia SS, Cunningham BL, Van Beek AL. Bioengineered Approach to the Design of a Fat Graft Based on Mathematical Modeling that Predicts Oxygen Delivery. Plast Reconstr Surg 2019; 143:1648-1655. [DOI: 10.1097/prs.0000000000005626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Trivanović D, Drvenica I, Kukolj T, Obradović H, Okić Djordjević I, Mojsilović S, Krstić J, Bugarski B, Jauković A, Bugarski D. Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S370-S382. [PMID: 30198336 DOI: 10.1080/21691401.2018.1494183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Adipose tissue (AT) homeostasis and expansion are dependent on complex crosstalk between resident adipose stromal/stem cells (ASCs) and AT extracellular matrix (ECM). Although adipose tissue ECM (atECM) is one of the key players in the stem cell niche, data on bidirectional interaction of ASCs and atECM are still scarce. Here, we investigated how atECM guides ASCs' differentiation. atECM altered shape and cytoskeleton organization of ASCs without changing their proliferation, β-galactosidase activity and adhesion. Cytoskeleton modifications occurred due to fostered parallel organization of F-actin and elevated expression of Vimentin in ASCs. After seven-day cultivation, atECM impaired osteogenesis of ASCs, simultaneously decreasing expression of Runx2. In addition, atECM accelerated early adipogenesis concomitantly with altered Vimentin organization in ASCs, slightly increasing PPARγ, while elevated Adiponectin and Vimentin mRNA expression. Early adipogenesis triggered by atECM was followed by upregulated mitochondrial activity and Sirtuin 1 (SIRT1) expression in ASCs. Proadipogenic events induced by atECM were mediated by SIRT1, indicating the supportive role of atECM in adipogenesis-related metabolic state of ASCs. These results provide a closer look at the effects of atECM on ASC physiology and may support the advancement of engineering design in soft tissue reconstruction and fundamental research of AT.
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Affiliation(s)
- Drenka Trivanović
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Ivana Drvenica
- b Laboratory for Immunology , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Tamara Kukolj
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Hristina Obradović
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Ivana Okić Djordjević
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Slavko Mojsilović
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Jelena Krstić
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Branko Bugarski
- c Department of Chemical Engineering, Faculty of Technology and Metallurgy , University of Belgrade , Belgrade , Serbia
| | - Aleksandra Jauković
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
| | - Diana Bugarski
- a Laboratory for Experimental Hematology and Stem Cells , Institute for Medical Research, University of Belgrade , Belgrade , Serbia
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Yu Q, Cai Y, Huang H, Wang Z, Xu P, Wang X, Zhang L, Zhang W, Li W. Co-Transplantation of Nanofat Enhances Neovascularization and Fat Graft Survival in Nude Mice. Aesthet Surg J 2018; 38:667-675. [PMID: 29161346 DOI: 10.1093/asj/sjx211] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Autologous fat grafting is commonly used for soft-tissue augmentation and reconstruction. However, this technique is limited by a high rate of graft absorption. Thus, approaches to improve fat graft survival that promote neovascularization are of great interest. Nanofat has several beneficial features that may render it more suitable for clinical applications than other stem-cell based approaches. OBJECTIVES We aimed to determine whether nanofat could enhance new vessel formation and improve the long-term retention of fat grafts. METHODS Nanofat was processed via mechanical emulsification and filtration. Fat grafts were transplanted subcutaneously under the scalps of nude mice with different nanofat volumes or without nanofat. The grafted fat was dissected 12 weeks after transplantation. Graft weight and volume were measured, and histological evaluations, including capillary density measurement, were performed. RESULTS The co-transplantation of fat with nanofat showed higher graft weight and volume retention, better histological structure, and higher capillary density compared to that in controls. However, there were no significant differences between the two nanofat volumes utilized. CONCLUSIONS Nanofat can enhance neovascularization and improve fat graft survival, providing a potential clinically viable approach to fat graft supplementation in plastic and reconstructive surgery.
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Affiliation(s)
- Qian Yu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Yizuo Cai
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - He Huang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Zhenxing Wang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Peng Xu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Xiangsheng Wang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Lu Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Wenjie Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
| | - Wei Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai, China
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Suszynski TM, Sieber DA, Mueller K, Van Beek AL, Cunningham BL, Kenkel JM. Characterization of Adipose Tissue Product Quality Using Measurements of Oxygen Consumption Rate. Aesthet Surg J 2018; 38:442-447. [PMID: 29045546 DOI: 10.1093/asj/sjx160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Fat grafting is a common procedure in plastic surgery but associated with unpredictable graft retention. Adipose tissue (AT) "product" quality is affected by the methods used for harvest, processing and transfer, which vary widely amongst surgeons. Currently, there is no method available to accurately assess the quality of AT. OBJECTIVES In this study, we present a novel method for the assessment of AT product quality through direct measurements of oxygen consumption rate (OCR). OCR has exhibited potential in predicting outcomes following pancreatic islet transplant. Our study aim was to reapportion existing technology for its use with AT preparations and to confirm that these measurements are feasible. METHODS OCR was successfully measured for en bloc and postprocessed AT using a stirred microchamber system. OCR was then normalized to DNA content (OCR/DNA), which represents the AT product quality. RESULTS Mean (±SE) OCR/DNA values for fresh en bloc and post-processed AT were 149.8 (± 9.1) and 61.1 (± 6.1) nmol/min/mg DNA, respectively. These preliminary data suggest that: (1) OCR and OCR/DNA measurements of AT harvested using conventional protocol are feasible; and (2) standard AT processing results in a decrease in overall AT product quality. CONCLUSIONS OCR measurements of AT using existing technology can be done and enables accurate, real-time, quantitative assessment of the quality of AT product prior to transfer. The availability and further validation of this type of assay could enable optimization of fat grafting protocol by providing a tool for the more detailed study of procedural variables that affect AT product quality.
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Affiliation(s)
- Thomas M Suszynski
- Department of Plastic Surgery, University of Texas Southwestern, Dallas, TX
| | - David A Sieber
- plastic surgeon in private practice in San Francisco, CA
| | - Kathryn Mueller
- Division of Plastic and Reconstructive Surgery, University of Minnesota, Minneapolis, MN
| | - Allen L Van Beek
- Division of Plastic and Reconstructive Surgery, University of Minnesota, Minneapolis, MN
| | - Bruce L Cunningham
- Division of Plastic and Reconstructive Surgery, University of Minnesota, Minneapolis, MN
| | - Jeffrey M Kenkel
- Department of Plastic Surgery, University of Texas Southwestern, Dallas, TX
- Associate Editor of Aesthetic Surgery Journal
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Chen G, Li Q, Luo Y, Liu T, Zhou S, Pan E, Peng L. Effect of Notoginsenoside R1 on autologous adipose graft in rats. Mol Med Rep 2018; 17:5928-5933. [PMID: 29436657 DOI: 10.3892/mmr.2018.8596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 04/04/2017] [Indexed: 11/06/2022] Open
Abstract
Autologous fat particle transplantation has been widely used by surgeons. The present study evaluated the effect of Notoginsenoside R1 (NR1) treatment on rat autologous fat graft, along with the quality and retention rates. Male Sprague‑Dawley rats (n=60) received fat particle auto‑transplantation from the left abdominal cavity into lateral dorsum. A total of 14 days after surgery, NR1 in different doses (50, 100 and 200 mg/kg/day) was injected into rats, following which blood and fat graft samples were harvested at days 7, 14 and 28. Assessments were carried out by hematoxylin and eosin staining, western blotting, ELISA and immunohistochemistry (IHC). The survival rate of fat grafts was increased in three experimental groups, as detected by weight measurement. Histological scoring demonstrated that there were significant differences in tissue integrity between the 100 mg/kg/day group and the other 3 groups. hepatocyte growth factor, vascular endothelial growth factor, fibroblast growth factor, angiotensin and S100 levels in the 100 mg/kg/day NR1 group was increased compared with the other 2 treatment groups; however, all 3 treatment groups demonstrated increased expression of these proteins compared with the control group. Additionally, cluster of differentiation (CD)68 exhibited negative expression and CD31 showed weakly positive expression in all three experiments, as assessed by IHC. In conclusion, 100 mg/kg/day NR1 may potentially promote the retention rate and enhance the quality of autologous fat grafts via increasing vascularity in the recipient site. These results implicate NR1 as a therapeutic strategy for the improvement of outcome following fat graft surgery.
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Affiliation(s)
- Guizong Chen
- Department of Plastic Surgery, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Qin Li
- Department of Plastic Surgery, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Yanping Luo
- Department of Plastic Surgery, Guangzhou Mylike Aesthetic Surgery Hospital, Guangzhou, Guangdong 510000, P.R. China
| | - Tao Liu
- Department of Plastic Surgery, Guangzhou Mylike Aesthetic Surgery Hospital, Guangzhou, Guangdong 510000, P.R. China
| | - Shaolong Zhou
- Department of Plastic Surgery, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Er Pan
- Department of Plastic Surgery, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong 510000, P.R. China
| | - Lixia Peng
- Department of Plastic Surgery, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong 510000, P.R. China
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The Fate of the Adipose-Derived Stromal Cells during Angiogenesis and Adipogenesis after Cell-Assisted Lipotransfer. Plast Reconstr Surg 2018; 141:365-375. [DOI: 10.1097/prs.0000000000004021] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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23
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Priglinger E, Sandhofer M, Peterbauer A, Wurzer C, Steffenhagen C, Maier J, Holnthoner W, Nuernberger S, Redl H, Wolbank S. Extracorporeal shock wave therapy in situ - novel approach to obtain an activated fat graft. J Tissue Eng Regen Med 2017; 12:416-426. [PMID: 28486783 DOI: 10.1002/term.2467] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 02/27/2017] [Accepted: 05/04/2017] [Indexed: 01/23/2023]
Abstract
One of the mainstays of facial rejuvenation strategies is volume restoration, which can be achieved by autologous fat grafting. In our novel approach, we treated the adipose tissue harvest site with extracorporeal shock wave therapy (ESWT) in order to improve the quality of the regenerative cells in situ. The latter was demonstrated by characterizing the cells of the stromal vascular fraction (SVF) in the harvested liposuction material regarding cell yield, adenosine triphosphate (ATP) content, proliferative capacity, surface marker profile, differentiation potential and secretory protein profile. Although the SVF cell yield was only slightly enhanced, viability and ATP concentration of freshly isolated cells as well as proliferation doublings after 3 weeks in culture were significantly increased in the ESWT compared with the untreated group. Likewise, cells expressing mesenchymal and endothelial/pericytic markers were significantly elevated concomitant with an improved differentiation capacity towards the adipogenic lineage and enhancement in specific angiogenic proteins. Hence, in situ ESWT might be applied in the future to promote cell fitness, adipogenesis and angiogenesis within the fat graft for successful facial rejuvenation strategies with potential long-term graft survival.
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Affiliation(s)
- E Priglinger
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - M Sandhofer
- Austrian Academy of Cosmetic Surgery and Aesthetic Medicine, Linz, Austria
| | - A Peterbauer
- Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Red Cross Blood Transfusion Service of Upper Austria, Linz, Austria
| | - C Wurzer
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Liporegena GmbH, Austria
| | - C Steffenhagen
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - J Maier
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - W Holnthoner
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - S Nuernberger
- Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Bernhard Gottlieb University Clinic of Dentistry, Universitätsklinik für Zahn-, Mund- und Kieferheilkunde Ges.m.b.H, Vienna, Austria.,Medical University of Vienna, Department of Trauma Surgery, Vienna, Austria
| | - H Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - S Wolbank
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Linz/Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
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