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https://www.readbyqxmd.com/read/28643006/complications-of-fat-transfer-for-breast-augmentation
#1
Paraskevas Kontoes, George Gounnaris
Autologous fat grafting is quite common for breast augmentations as well as for reconstructive breast surgery. Coleman has described the surgical technique of fat grafting. Fat is harvested, and after centrifugation and refinement, blunt infiltration cannulas are used to place the fat through small incisions. The grafted tissue is placed in small aliquots with each withdrawal of the cannula. In order to achieve an aesthetically pleasing contour of the breast, the fat should be layered into different levels from the chest wall to the skin...
June 22, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28574947/dynamic-rheology-for-the-prediction-of-surgical-outcomes-in-autologous-fat-grafting
#2
Anna Luan, Elizabeth R Zielins, Taylor Wearda, David A Atashroo, Charles P Blackshear, Jordan Raphel, Elizabeth A Brett, John Flacco, Michael C Alyono, Arash Momeni, Sarah Heilshorn, Michael T Longaker, Derrick C Wan
BACKGROUND: Due to the abundance and biocompatibility of fat, lipotransfer has become an attractive method for treating soft tissue deficits. However, it is limited by unpredictable graft survival and retention. Currently, little is known about the viscoelastic properties of fat after various injection methods. Here, we assess the effects of cannula diameter, length, and shape on the viscoelastic properties, structure, and retention of fat. METHODS: Human lipoaspirate was harvested using suction-assisted liposuction and prepared for grafting...
May 31, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28573148/a-promising-tool-for-surgical-lipotransfer-a-constant-pressure-and-quantity-injection-device-in-facial-fat-grafting
#3
Mei Song, Yi Liu, Ping Liu, Xianying Zhang
BACKGROUND: The purpose of this study was to preliminarily assess a constant pressure and quantity fat granule injection device for minimal invasive properties in clinic. METHODS: A retrospective controlled study was carried out, from October 2013 to January 2015, on 76 female healthy patients aged between 26 and 53 years at the General Hospital of Lanzhou Military Command, China. To achieve small volume, high thrust, and precision requirements of facial fat grafting, an integrated handheld controller and motor design was adopted, reducing the volume and weight of the fat transplantation injection device...
2017: Burns and trauma
https://www.readbyqxmd.com/read/28545495/the-impact-of-human-adipose-tissue-derived-stem-cells-on-breast-cancer-cells-implications-for-cell-assisted-lipotransfers-in-breast-reconstruction
#4
Eva Koellensperger, Lilly-Claire Bonnert, Inka Zoernig, Frederik Marmé, Stefanie Sandmann, Günter Germann, Felix Gramley, Uwe Leimer
BACKGROUND: In this study we evaluated the interactions of human adipose tissue-derived stem cells (ADSCs) and different human breast cancer cell lines (BRCAs) with regard to the safety of cell-assisted lipotransfers for breast reconstruction and a thereby unintended co-localization of ADSCs and BRCAs. METHODS: ADSCs were co-cultured with five different human BRCAs (MCF-7, MDA-MB-231, SK-BR-3, ZR-75-30, and EVSA-T) and primary BRCAs from one patient in a transwell system, and cell-cell-interactions were analyzed by assessing doubling time, migration and invasion, angiogenesis, quantitative real-time polymerase chain reaction (PCR) of more than 300 tumor-associated genes, and multiplex protein assays of 20 chemokines and growth factors and eight matrix metalloproteinases (MMPs)...
May 25, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28486770/melatonin-promotes-survival-of-non-vascularized-fat-grafts-and-enhances-the-viability-and-migration-of-human-adipose-derived-stem-cells-via-down-regulation-of-acute-inflammatory-cytokines
#5
Shaun S Tan, Weiqing Zhan, Christopher J Phoon, Xiaolian Han, Diego Marre, Sholeh Boodhun, Jason A Palmer, Geraldine M Mitchell, Wayne A Morrison
Non-vascularized fat grafting is a valuable technique for soft tissue reconstruction but poor survival of fat in the host environment remains a problem. A process known as cell-assisted transfer is used to enhance fat graft retention by adding stromal vascular fraction, an adipose-derived stem cell (ASC) rich content to lipoaspirate. We have recently shown that the use of melatonin, a ROS scavenger, protects human ASCs from hydrogen peroxide induced oxidative stress and cell death in vitro but its role as a pharmacologic adjunct in clinical fat grafting has not been studied...
May 9, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28457726/cell-assisted-lipotransfer-current-concepts
#6
J Laloze, A Varin, N Bertheuil, J L Grolleau, C Vaysse, B Chaput
Autologous fat transfer, or lipofilling, is a common technique used for soft tissue reconstruction. It has been used for many years, but the technique is associated with a significant graft resorption rate (20% to 80%). To improve the fat graft survival rate, several methods have been tested, and one has appeared more promising: cell-assisted lipotransfer (CAL). In the CAL method, fat is enriched with adipose-derived stromal cells (ASC), contained in the stromal vascular fraction (SVF) obtained after enzymatic digestion of fat or after cell culture to improve the fat survival rate...
April 27, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28445363/indomethacin-enhances-fat-graft-retention-by-up-regulating-adipogenic-genes-and-reducing-inflammation
#7
Weiqing Zhan, Shaun S Tan, Xiaolian Han, Jason A Palmer, Geraldine M Mitchell, Wayne A Morrison
BACKGROUND: Cell-assisted lipotransfer has been promisingly applied to restore soft-tissue defects in plastic surgery; however, the harvesting of stromal vascular fraction increases morbidity and poses potential safety hazards. The authors investigated whether adding indomethacin, an antiinflammatory proadipogenic drug, to the fat graft at the time of transplantation would enhance the final graft volume compared with cell-assisted lipotransfer. METHODS: In vitro, human adipose-derived stem cells were cultured in conditioned growth media supplemented with various doses of indomethacin to investigate adipogenesis and the expression of the adipogenic genes...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28380641/-development-of-an-innovative-cell-isolation-method-for-the-investigation-of-breast-cancer-pathogenesis-and-angiogenesis-for-experimental-in-vitro-and-in-vivo-assays
#8
Annika Weigand, Kereshmeh Tasbihi, Pamela L Strissel, Reiner Strick, Raymund E Horch, Anja M Boos
Breast cancer is the world's most common cancer among women. Autologous lipotransfer is increasingly used for breast reconstruction following surgical removal of the tumour. In cell-assisted lipotransfer, the transplant is enriched with stem cells from adipose tissue (ADSC). Despite positive clinical results, there are some concerns regarding oncological safety due to transplanted stem cells. To date there are only a few breast cancer studies using primary cells from the same patient to enable further investigation into the complexity of cell-cell interactions in breast cancer in an experimental setting...
April 5, 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28350672/purified-adipose-derived-stromal-cells-provide-superior-fat-graft-retention-compared-with-unenriched-stromal-vascular-fraction
#9
COMPARATIVE STUDY
Elizabeth R Zielins, Elizabeth A Brett, Charles P Blackshear, John Flacco, Ryan C Ransom, Michael T Longaker, Derrick C Wan
Cell-assisted lipotransfer has shown much promise as a technique to improve fat graft retention in both mouse and human studies. However, the literature varies as to whether fresh stromal vascular fraction or culture-expanded adipose-derived stromal cells are used to augment volume retention. The authors' study sought to determine whether there was a significant advantage to using adipose-derived stromal cells over unpurified stromal vascular fraction cells in a mouse model of cell-assisted lipotransfer.
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28066801/cell-assisted-lipotransfer-in-breast-augmentation-and-reconstruction-a-systematic-review-of-safety-efficacy-use%C3%A2-of%C3%A2-patient-reported-outcomes-and-study-quality
#10
Zeeshaan Arshad, Lindsey Karmen, Rajan Choudhary, James A Smith, Olivier A Branford, David A Brindley, David Pettitt, Benjamin M Davies
BACKGROUND: Cell assisted lipotransfer serves as a novel technique for both breast reconstruction and breast augmentation. This systematic review assesses the efficacy, safety and use of patient reported outcome measures in studies involving cell assisted lipotransfer. We also carry out an objective assessment of study quality focussing on recruitment, follow-up and provide an up-to-date clinical trial landscaping analysis. METHODS: Key electronic databases were searched according to PRISMA guidelines and pre-defined inclusion and exclusion criteria...
December 2016: JPRAS Open
https://www.readbyqxmd.com/read/28043786/autologous-fat-grafting-a-comparative-study-of-four-current-commercial-protocols
#11
COMPARATIVE STUDY
Vincent Hivernaud, Bruno Lefourn, Myriam Robard, Jérôme Guicheux, Pierre Weiss
BACKGROUND: Autologous fat grafting is a widely used technique that gives natural results when treating soft tissue deficiencies. However, there is no consensus on which is the best procedure to use, leading to unpredictable results because of fat graft resorption. OBJECTIVES: This study compared four commercial lipotransfer devices by analyzing the behavior of the processed adipose tissue and outcome of the adipose graft in an in vivo model. METHODS: Four different protocols that used manual, power-assisted or water-assisted lipoaspiration and then decantation, centrifugation, or filtration were used on each of eight patients to process lipoaspirate...
February 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27810224/the-utility-of-adipose-derived-stem-cells-and-stromal-vascular-fraction-for-oncologic-soft-tissue-reconstruction-is-it-safe-a-matter-for-debate
#12
Shaun S Tan, Weiliang Loh
Autologous free-fat grafting (AFG) has emerged as an attractive proposition for soft-tissue reconstruction of various contour defects because it obviates more complex reconstructive options and reduces operative times and donor-site morbidity. Nonetheless, a common complication of this procedure is the resorption of the engrafted fat. Cell-assisted lipotransfer (CAL) is now a well-regarded technique where adipose-derived stem cell (ASC)-rich stromal vascular fraction is admixed with lipoaspirate, increasing the volumetric outcome of fat grafts in light of its potent angiogenic and adipogenic properties...
November 1, 2016: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/27761084/role-of-adipose-derived-stem-cells-in-fat-grafting-and-reconstructive-surgery
#13
Shaun S Tan, Zhi Yang Ng, Weiqing Zhan, Warren Rozen
Autologous fat grafting is commonly utilised to reconstruct soft tissue defects caused by ageing, trauma, chronic wounds and cancer resection. The benefits of fat grafting are minimal donor site morbidity and ease of availability through liposuction or lipectomy. Nonetheless, survival and longevity of fat grafts remain poor post-engraftment. Various methods to enhance fat graft survival are currently under investigation and its stem cell constituents are of particular interest. Cell-assisted lipotransfer refers to the addition of adipose-derived stem cell (ASC) rich component of stromal vascular fraction to lipoaspirate, the results of which have proven promising...
July 2016: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/27607119/analysis-of-lipoasiprated-following-centrifugation-wet-versus-dry-harvesting-technique
#14
Tommaso Agostini, Giuseppe Spinelli, Raffella Perello, Daniele Bani, Giulia Boccalini
BACKGROUND: The success of lipotransfer strongly depends on the harvesting, processing, and placement of the lipoaspirated samples. This study was designed to assess the histomorphometric characteristics and viability of fat harvested using different techniques (wet and dry) following centrifugation, as described by Coleman. METHODS: The study enrolled 85 consecutive, nonrandomized, healthy patients from March 2010 to December 2014 (45 males and 40 females). The mean age was 40 years (range, 18-59 years), and the mean body mass index was 25...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27547930/-legal-framework-of-autologous-fat-usage-in-point-of-care-treatments-in-plastic-and-aesthetic-surgery-risks-of-criminal-prosecution-and-infringement-of-medical-law-due-to-pharmaceutical-regulations
#15
T Faltus
The use of autologous fat, especially for (stem) cell-assisted lipotransfer in plastic and aesthetic surgery, has regularly been regarded as the manufacture and application of so called Advanced Therapy Medicinal Products (ATMP). However, the in-house production of such pharmaceuticals at the point-of-care (PoC) in the surgeon's practice is not permitted without an official manufacturing license. Therefore, before beginning such treatments, a pharmaceutical manufacturing license has to be granted to the surgeon to avoid criminal prosecution and negative consequences due to infringement of professional regulations...
August 2016: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/27218020/melatonin-protects-human-adipose-derived-stem-cells-from-oxidative-stress-and-cell-death
#16
Shaun S Tan, Xiaolian Han, Priyadharshini Sivakumaran, Shiang Y Lim, Wayne A Morrison
BACKGROUND: Adipose-derived stem cells (ASCs) have applications in regenerative medicine based on their therapeutic potential to repair and regenerate diseased and damaged tissue. They are commonly subject to oxidative stress during harvest and transplantation, which has detrimental effects on their subsequent viability. By functioning as an antioxidant against free radicals, melatonin may exert cytoprotective effects on ASCs. METHODS: We cultured human ASCs in the presence of varying dosages of hydrogen peroxide and/or melatonin for a period of 3 hours...
May 2016: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/27194429/adipocytes-viability-after-suction-assisted-lipoplasty-does-the-technique-matter
#17
Moti Harats, Eran Millet, Marie Jaeger, Arie Orenstein, Josef Haik, Steven D Hajdu, Gal Markel, Eyal Winkler, Ariel Tessone
BACKGROUND: Suction-assisted lipoplasty (SAL; liposuction) is an established aesthetic procedure in plastic surgery. The main parameters differentiating one method of lipoplasty from another are safety, consistency of results, and other more technical parameters. Due to the recent popularity of lipotransfer, the quality of extracted fat has become a relevant parameter. We compare the viability of extracted adipocytes after dry SAL, hyper-tumescent PAL (power-assisted lipoplasty), and water-assisted lipoplasty (WAL)...
August 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/27169866/lipotransfer-for-radiation-induced-skin-fibrosis
#18
REVIEW
R Kumar, M Griffin, G Adigbli, N Kalavrezos, P E M Butler
BACKGROUND: Radiation-induced fibrosis (RIF) is a late complication of radiotherapy that results in progressive functional and cosmetic impairment. Autologous fat has emerged as an option for soft tissue reconstruction. There are also sporadic reports suggesting regression of fibrosis following regional lipotransfer. This systematic review aimed to identify cellular mechanisms driving RIF, and the potential role of lipotransfer in attenuating these processes. METHODS: PubMed, OVID and Google Scholar databases were searched to identify all original articles regarding lipotransfer for RIF...
July 2016: British Journal of Surgery
https://www.readbyqxmd.com/read/27151914/cell-assisted-lipotransfer-using-autologous-adipose-derived-stromal-cells-for-alleviation-of-breast-cancer-related-lymphedema
#19
Navid Mohamadpour Toyserkani, Charlotte Harken Jensen, Søren Paludan Sheikh, Jens Ahm Sørensen
UNLABELLED: : Lymphedema is one of the most frequent side effects following cancer treatment, and treatment opportunities for it are currently lacking. Stem cell therapy has been proposed as a possible novel treatment modality. This study was the first case in which freshly isolated adipose-derived stromal cells were used to treat lymphedema. Treatment was given as a cell-assisted lipotransfer in which 4.07 × 10(7) cells were injected with 10 ml of lipoaspirate in the axillary region...
July 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27070348/comparative-study-of-adipose-derived-stem-cells-from-abdomen-and-breast
#20
COMPARATIVE STUDY
Vipra Guneta, Nguan Soon Tan, Shigeki Sugii, Thiam Chye Lim, Thien Chong Marcus Wong, Cleo Choong
BACKGROUND: Abdominal tissue enriched with adipose-derived stem cells (ASCs) is often used in cell-assisted lipotransfer procedures for breast reconstruction. However, as the tissue microenvironment and stem cell niche play important roles in defining the characteristics of the resident cells, it is hypothesized that the stem cell population present in the donor abdominal tissue has dissimilar properties as compared with the cells in the recipient breast tissue, which may ultimately affect the long-term success of the graft...
May 2016: Annals of Plastic Surgery
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