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Lipoaspirate

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https://www.readbyqxmd.com/read/28639068/what-about-the-rheological-properties-of%C3%A2-prp-microfat-mixtures-in-fat-grafting-procedure
#1
R Ghazouane, B Bertrand, C Philandrianos, J Veran, M Abellan, P Francois, M Velier, C Orneto, P Piccerelle, J Magalon
BACKGROUND: Fat grafting has emerged as a reference procedure in daily plastic surgery practice. Unpredictable fat resorption is the main clinical problem. For this purpose, the addition of PRP to enhance fat revascularization is now an easy and popular procedure. However, no consensus exists regarding the respective volume of fat and PRP used to obtain the ideal mixture. This study investigated the rheological properties of microfat mixed with different proportions of PRP. Results obtained were compared with commercialized hyaluronic acid fillers...
June 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28629466/intra-articular-injection-in-the-knee-of-adipose-derived-stromal-cells-stromal-vascular-fraction-and-platelet-rich-plasma-for-osteoarthritis
#2
Himanshu Bansal, Kristin Comella, Jerry Leon, Poonam Verma, Diwaker Agrawal, Prasad Koka, Thomas Ichim
BACKGROUND: Stromal vascular fraction (SVF) can easily be obtained from a mini-lipoaspirate procedure of fat tissue and platelet rich plasma (PRP) can be obtained from peripheral blood. We evaluated the safety and preliminary efficacy of administering SVF and PRP intra-articularly into patients with osteoarthritis grade 1 and 2. METHODS: A total of ten patients underwent a local tumescent liposuction procedure to remove approximately 100 ml of fat tissue from the abdomen...
June 19, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28625922/macrophage-infiltration-regulates-the-adipose-ecm-reconstruction-and-the-fibrosis-process-after-fat-grafting
#3
Junrong Cai, Kaiyang Liu, Guanghui Li, Feng Lu
BACKGROUND: Fat grafting experiences a regeneration process from free lipoaspirate to intact adipose tissue. The adipose extracellular matrix (ECM) provides the structure and biochemical support for the surrounding cells, and is regulated by inflammatory cells, like macrophages. It is hypothesized that transferred fat undergoes ECM remodeling after fat grafting and the process can be regulated by macrophage infiltration. METHODS: Lipoaspirate was injected subcutaneously into the back of nude mice...
June 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28615811/adipokine-concentrations-in-lipoaspirates-may-have-a-role-in-wound-healing
#4
Christian Herold, Stefan Engeli, Bibiana Beckmann, Peter M Vogt, Hans-Oliver Rennekampff
OBJECTIVES: In addition to its use as a volume filler, fat grafting may have a potential role in wound healing based on the concentration of growth factors in the lipoaspirate. In this study, we compare the quantitative and qualitative concentration of the various growth factors and adipokines using the Shippert or the Coleman techniques to prepare the lipoaspirate. METHODS: We measured leptin, adiponectin and the growth factors, i.e., acidic fibroblast growth factor (aFGF), basic FGF (bFGF), keratinocyte growth factor (KGF), bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) by ELISA in solid and liquid fractions obtained with both techniques in human fat obtained with Coleman technique and Shippert technique...
January 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28599842/composite-breast-reconstruction-implant-based-breast-reconstruction-with%C3%A2-adjunctive-lipofilling
#5
C E Sommeling, K Van Landuyt, H Depypere, R Van den Broecke, S Monstrey, P N Blondeel, W A Morrison, F B Stillaert
INTRODUCTION: Options for breast reconstructions enclose autologous tissue transfers or implants. Fat grafting is gaining more interest in this specific field of breast surgery. This study concentrates on the technique and aesthetic results of breast reconstruction with fat grafts combined with implants, in women who have undergone total mastectomy. METHODS: Breast reconstructions (n = 23) was performed using a protocol of intratissular expansion with serial deflation-lipofilling...
May 22, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28574947/dynamic-rheology-for-the-prediction-of-surgical-outcomes-in-autologous-fat-grafting
#6
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/28545495/the-impact-of-human-adipose-tissue-derived-stem-cells-on-breast-cancer-cells-implications-for-cell-assisted-lipotransfers-in-breast-reconstruction
#7
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/28538585/reply-mechanical-micronization-of-lipoaspirates-squeeze-and-emulsification-techniques
#8
Takanobu Mashiko, Szu-Hsien Wu, Jingwei Feng, Koji Kanayama, Kotaro Yoshimura
No abstract text is available yet for this article.
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28525415/effects-of-collagenase-digestion-and-stromal-vascular-fraction-supplementation-on-volume-retention-of-fat-grafts
#9
Jonathan B Olenczak, Scott A Seaman, Kant Y Lin, Angela Pineros-Fernandez, Catherine E Davis, Lisa S Salopek, Shayn M Peirce, Patrick S Cottler
OBJECTIVE: The use of autologous fat as a soft tissue filler has increased over the past decade in both reconstructive and aesthetic surgeries. Enhancement of autologous fat grafts with the addition of the stromal vascular fraction (SVF) has been reported to improve long-term volume retention. Stromal vascular fraction is most commonly isolated using enzymatic digestion, but it is unknown what effect the digestion process has on the adipocytes and SVF cells that comprise the graft. Some clinicians have reported use of enzymatically digested fat grafts to alter the physical properties of the tissue in specialized applications...
June 2017: Annals of Plastic Surgery
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
#10
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/28471290/is-the-transposition-of-the-nipple-areolar-complex-necessary-in-simon-grade-2b-gynecomastia-operations-using-suction-assisted-liposuction
#11
Burhan Özalp, Ömer Berköz, Mustafa Aydınol
OBJECTIVE: The aim of this study was to assess the efficacy of suction-assisted liposuction (SAL) in Simon grade 2b gynecomastia and its effect on sternal notch to nipple areola (SNN) distance. METHODS: A retrospective analysis was performed on 21 patients with grade 2b gynecomastia who underwent SAL. Preoperative and postoperative SNN distances of the patients were measured, the results were analysed using a Mann-Whitney U test and a p-value <.05 was accepted as statistically significant...
May 4, 2017: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/28464475/isolation-of-cd248-expressing-stromal-vascular-fraction-for-targeted-improvement-of-wound-healing
#12
Elizabeth Brett, Elizabeth R Zielins, Monica Chin, Michael Januszyk, Charles P Blackshear, Michael Findlay, Arash Momeni, Geoffrey C Gurtner, Michael T Longaker, Derrick C Wan
Wound healing remains a global issue of disability, cost, and health. Addition of cells from the stromal vascular fraction (SVF) of adipose tissue has been shown to increase the rate of full thickness wound closure. This study aimed to investigate the angiogenic mechanisms of CD248+ SVF cells in the context of full thickness excisional wounds. Single cell transcriptional analysis was used to identify and cluster angiogenic gene-expressing cells, which was then correlated with surface marker expression. SVF cells isolated from human lipoaspirate were FACS sorted based on the presence of CD248...
May 2, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28452591/donor-dependent-variances-of-human-adipose-derived-stem-cells-in-respect-to-the-in-vitro-endothelial-cell-differentiation-capability
#13
Jascha Ell, Sybille Regn, Anna-Maria Buchberger, Achim von Bomhard, Thomas Stark, Jan-Thorsten Schantz, Katharina Storck
Human adipose-derived stem cells (ASC) have been shown to differentiate into mature adipocytes and to play an important role in creating the vasculature, necessary for white adipose tissue to function. To study the stimulatory capacity of ASC on endothelial progenitor cells we used a commercially available co-culture system (V2a - assay). ASC, isolated from lipoaspirates of 18 healthy patients, were co-cultured for 13 d on endothelial progenitor cells. Using anti CD31 immunostaining, cells that had undergone endothelial differentiation were quantified after the defined co-cultivation period...
January 2, 2017: Adipocyte
https://www.readbyqxmd.com/read/28445363/indomethacin-enhances-fat-graft-retention-by-up-regulating-adipogenic-genes-and-reducing-inflammation
#14
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/28437187/synergy-between-choroid-plexus-epithelial-cell-conditioned-medium-and-knockout-serum-replacement-converts-human-adipose-derived-stem-cells-to-dopamine-secreting-neurons
#15
Mahdi Eskandarian Boroujeni, Mossa Gardaneh, Mehrnoosh Hasan Shahriari, Abbas Aliaghaei, Sanaz Hasani
Human adipose-derived stem cells (hADSCs) have great capacity to differentiate into mesodermal origins as well as nonmesodermal lineages, including neural cells. This valuable feature paves the way for the therapeutic application of hADSCs for neurodegenerative maladies such as Parkinson's disease (PD). We tested the capacity of choroid plexus epithelial cell-conditioned medium (CPEC-CM) alone or cocktailed with knockout serum (KS) to induce dopaminergic (DAergic) differentiation of hADSCs. To this end, hADSCs from lipoaspirate were phenotypically characterized and shown to maintain mesodermal multipotency so that selected media easily differentiated them into osteoblasts, chondrocytes, and adipocytes...
April 27, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28406706/nanofat-2-0-experimental-evidence-for-a-fat-grafting-rich-in-mesenchymal-stem-cells
#16
D Lo Furno, S Tamburino, G Mannino, E Gili, G Lombardo, M S Tarico, C Vancheri, R Giuffrida, R E Perrotta
Different strategies have been developed in the last decade to obtain fat grafts as rich as possible of mesenchymal stem cells, so exploiting their regenerative potential. Recently, a new kind of fat grafting, called "nanofat", has been obtained after several steps of fat emulsification and filtration. The final liquid suspension, virtually devoid of mature adipocytes, would improve tissue repair because of the presence of adipose mesenchymal stem cells (ASCs). However, since it is probable that many ASCs may be lost in the numerous phases of this procedure, we describe here a novel version of fat grafting, which we call "nanofat 2...
April 12, 2017: Physiological Research
https://www.readbyqxmd.com/read/28372703/editorial-commentary-thinking-inside-the-box-yields-the-possibility-of-harvesting-stem-cells-from-inside-the-injured-knee
#17
EDITORIAL
Michael J Rossi
Looking to the injured knee for potential stem cell harvesting has attractive benefits. Stem cells can be successfully harvested but the concentrations with the current technology are lower than bone marrow or lipoaspirate sites. The technique of utilizing the knee effusion and tissue by-products after cruciate ligament injury shows future promise.
April 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28364523/adipose-stem-cell-function-maintained-with-age-an-intra-subject-study-of-long-term-cryopreserved-cells
#18
COMPARATIVE STUDY
Lauren E Kokai, Dmitry O Traktuev, Liyong Zhang, Stephanie Merfeld-Clauss, Gabriella DiBernardo, Hongyan Lu, Kacey G Marra, Albert Donnenberg, Vera Donnenberg, E Michael Meyer, Peter B Fodor, Keith L March, J Peter Rubin
Background: The progressive decline in tissue mechanical strength that occurs with aging is hypothesized to be due to a loss of resident stem cell number and function. As such, there is concern regarding use of autologous adult stem cell therapy in older patients. To abrogate this, many patients elect to cryopreserve the adipose stromal-vascular fraction (SVF) of lipoaspirate, which contains resident adipose stem cells (ASC). However, it is not clear yet if there is any clinical benefit from banking cells at a younger age...
April 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28335186/ex-vivo-tissues-engineering-modeling-for-reconstructive-surgery-using-human-adult-adipose-stem-cells-and-polymeric-nanostructured-matrix
#19
Francesco Morena, Chiara Argentati, Eleonora Calzoni, Marino Cordellini, Carla Emiliani, Francesco D'Angelo, Sabata Martino
The major challenge for stem cell translation regenerative medicine is the regeneration of damaged tissues by creating biological substitutes capable of recapitulating the missing function in the recipient host. Therefore, the current paradigm of tissue engineering strategies is the combination of a selected stem cell type, based on their capability to differentiate toward committed cell lineages, and a biomaterial, that, due to own characteristics (e.g., chemical, electric, mechanical property, nano-topography, and nanostructured molecular components), could serve as active scaffold to generate a bio-hybrid tissue/organ...
March 31, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28327169/the-effect-of-lipoaspirates-vs-dissected-abdominal-fat-on-breast-cancer-cells-in-vitro
#20
Faris Almarzouqi, Hans-Oliver Rennekampff, Jan-Philipp Stromps, Ziyad Alharbi, Norbert Pallua
BACKGROUND: Cancer cells are typically surrounded by stromal cells and embedded in extracellular matrix (ECM). The stromal compartment interacts with cancer cells to promote growth and metastasis. For decades, autologous fasciocutaneous flaps have been safely applied for breast reconstruction after mastectomy. In contrast, the safety of fat grafting (lipofilling) procedure has been under debate regarding the risk of cancer recurrence. METHODS: Harvested fat tissue (lipoaspirates) and dissected abdominal fat (DAF) were co-cultured with MCF-7 breast cancer cells...
March 21, 2017: European Journal of Medical Research
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