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Adipose stromal vascular fraction

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https://www.readbyqxmd.com/read/28447575/adipose-derived-mesenchymal-stem-cells-from-the-elderly-exhibit-decreased-migration-and-differentiation-abilities-with-senescent-properties
#1
Meichen Liu, Hua Lei, Ping Dong, Xin Fu, Zhigang Yang, Ying Yang, Jiguang Ma, Xia Liu, Yilin Cao, Ran Xiao
Adipose-derived stem cells (ADSCs) can be applied extensively in the clinic because they can be easily isolated and cause less donor-site morbidity; however, their application can be complicated by patient-specific factors, such as age and harvest site. In this study, we systematically evaluated the effects of age on the quantity and quality of hADSCs isolated from excised chest subcutaneous adipose tissue and investigated the underlying molecular mechanism. hADSCs were isolated from donors of three different age groups (i...
April 26, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28445787/adipose-derived-stem-cells-were-impaired-in-restricting-cd4-t-cell-proliferation-and-polarization-in-type-2-diabetic-apoe-mouse
#2
Ming-Hao Liu, Ya Li, Lu Han, Yao-Yuan Zhang, Di Wang, Zhi-Hao Wang, Hui-Min Zhou, Ming Song, Yi-Hui Li, Meng-Xiong Tang, Wei Zhang, Ming Zhong
BACKGROUND: Atherosclerosis (AS) is the most common and serious complication of type 2 diabetes mellitus (T2DM) and is accelerated via chronic systemic inflammation rather than hyperglycemia. Adipose tissue is the major source of systemic inflammation in abnormal metabolic state. Pro-inflammatory CD4(+)T cells play pivotal role in promoting adipose inflammation. Adipose-derived stem cells (ADSCs) for fat regeneration have potent ability of immunosuppression and restricting CD4(+)T cells as well...
April 23, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28445363/indomethacin-enhances-fat-graft-retention-by-up-regulating-adipogenic-genes-and-reducing-inflammation
#3
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/28420427/isolation-and-characterization-of-equine-native-msc-populations
#4
Cristina L Esteves, Tara A Sheldrake, Simone P Mesquita, Juan J Pesántez, Timothy Menghini, Lucy Dawson, Bruno Péault, F Xavier Donadeu
BACKGROUND: In contrast to humans in which mesenchymal stem/stromal cell (MSC) therapies are still largely in the clinical trial phase, MSCs have been used therapeutically in horses for over 15 years, thus constituting a valuable preclinical model for humans. In human tissues, MSCs have been shown to originate from perivascular cells, namely pericytes and adventitial cells, which are identified by the presence of the cell surface markers CD146 and CD34, respectively. In contrast, the origin of MSCs in equine tissues has not been established, preventing the isolation and culture of defined cell populations in that species...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28394364/human-adipose-tissue-accumulation-is-associated-with-pro-inflammatory-changes-in-subcutaneous-rather-than-visceral-adipose-tissue
#5
I Kralova Lesna, S Cejkova, A Kralova, J Fronek, M Petras, A Sekerkova, F Thieme, L Janousek, R Poledne
The importance of the involvement of adipose tissue macrophage subpopulations in obesity-related disorders is well known from different animal models, but human data are scarcer. Subcutaneous (n=44) and visceral (n=52) adipose tissues of healthy living kidney donors were obtained during living donor nephrectomy. Stromal vascular fractions were isolated and analysed by flow cytometry using CD14, CD16, CD36 and CD163 antibodies. Total macrophage numbers in subcutaneous adipose tissue increased (P=0.02) with body mass index (BMI), with a similar increase seen in the proportion of phagocytic CD14+CD16+CD36(high) macrophages (P<0...
April 10, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28364523/adipose-stem-cell-function-maintained-with-age-an-intra-subject-study-of-long-term-cryopreserved-cells
#6
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/28350672/purified-adipose-derived-stromal-cells-provide-superior-fat-graft-retention-compared-with-unenriched-stromal-vascular-fraction
#7
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/28347862/cell-sheet-engineering-using-the-stromal-vascular-fraction-of-adipose-tissue-as-a-vascularization-strategy
#8
Marina Costa, Mariana T Cerqueira, Tírcia C Santos, Belém Sampaio-Marques, Paula Ludovico, Alexandra P Marques, Rogério P Pirraco, Rui L Reis
Current vascularization strategies for Tissue Engineering constructs, in particular cell sheet-based, are limited by time-consuming and expensive endothelial cell isolation and/or by the complexity of using extrinsic growth factors. Herein, we propose an alternative strategy using angiogenic cell sheets (CS) obtained from the stromal vascular fraction (SVF) of adipose tissue that can be incorporated into more complex constructs. Cells from the SVF were cultured in normoxic and hypoxic conditions for up to 8days in the absence of extrinsic growth factors...
March 24, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28340695/long-term-follow-up-after-autologous-adipose-derived-stromal-vascular-fraction-injection-into-fingers-in-systemic-sclerosis-patients
#9
A Daumas, J Magalon, E Jouve, R Truillet, D Casanova, L Giraudo, J Veran, A Benyamine, F Dignat-George, G Magalon, F Sabatier, B Granel
INTRODUCTION: Hand involvement confers a substantial handicap in work and daily activities in patients with Systemic sclerosis (SSc). Autologous adipose-derived stromal vascular fraction is as an easily accessible source of cells with regenerative effects. We previously performed a phase I open-label clinical trial (NTC01813279) assessing the safety of subcutaneous injection of autologous adipose-derived stromal vascular fraction. Six and 12-month data have been reported. As patients were followed in our medical centre, we report their longer-term outcome beyond the end of the trial...
January 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/28337463/skin-tissue-engineering-application-of-adipose-derived-stem-cells
#10
REVIEW
Agnes S Klar, Jakub Zimoch, Thomas Biedermann
Perception of the adipose tissue has changed dramatically over the last few decades. Identification of adipose-derived stem cells (ASCs) ultimately transformed paradigm of this tissue from a passive energy depot into a promising stem cell source with properties of self-renewal and multipotential differentiation. As compared to bone marrow-derived stem cells (BMSCs), ASCs are more easily accessible and their isolation yields higher amount of stem cells. Therefore, the ASCs are of high interest for stem cell-based therapies and skin tissue engineering...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28329220/prolonged-exposures-to-intermittent-hypoxia-promote-visceral-white-adipose-tissue-inflammation-in-a-murine-model-of-severe-sleep-apnea-effect-of-normoxic-recovery
#11
Alex Gileles-Hillel, Isaac Almendros, Abdelnaby Khalyfa, Recep Nigdelioglu, Zhuanhong Qiao, Robert B Hamanaka, Gökhan M Mutlu, Mahzad Akbarpour, David Gozal
Study Objective: Increased visceral white adipose tissue (vWAT) mass results in infiltration of inflammatory macrophages that drive inflammation and insulin resistance. Patients with obstructive sleep apnea (OSA) suffer from increased prevalence of obesity, insulin resistance, and metabolic syndrome. Murine models of intermittent hypoxia (IH) mimicking moderate-severe OSA manifest insulin resistance following short-term IH. We examined in mice the effect of long-term IH on the inflammatory cellular changes within vWAT and the potential effect of normoxic recovery (IH-R)...
March 1, 2017: Sleep
https://www.readbyqxmd.com/read/28325151/adipose-tissue-derived-pericytes-for-cartilage-tissue-engineering
#12
Jin Xin Zhang, Chun Yan Du, Wei Min Guo, Pan Li, Shu Yun Liu, Zhi Guo Yuan, Jian Hua Yang, Xun Sun, He Yong Yin, Quan Yi Guo, Chen Fu Zhou
Mesenchymal stem cells (MSCs) represent a promising alternative source for cartilage tissue engineering. However, MSC culture is labor-intensive, so these cells cannot be applied immediately to regenerate cartilage for clinical purposes. Risks during the ex vivo expansion of MSCs, such as infection and immunogenicity, can be a bottleneck in their use in clinical tissue engineering. As a novel stem cell source, pericytes are generally considered to be the origin of MSCs. Pericytes do not have to undergo time-consuming ex vivo expansion because they are uncultured cells...
March 21, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28323901/characterization-of-stromal-vascular-fraction-and-adipose-stem-cells-from-subcutaneous-preperitoneal-and-visceral-morbidly-obese-human-adipose-tissue-depots
#13
Karina Ribeiro Silva, Isis Côrtes, Sally Liechocki, João Regis Ivar Carneiro, Antônio Augusto Peixoto Souza, Radovan Borojevic, Clarissa Menezes Maya-Monteiro, Leandra Santos Baptista
BACKGROUND/OBJECTIVES: The pathological condition of obesity is accompanied by a dysfunctional adipose tissue. We postulate that subcutaneous, preperitoneal and visceral obese abdominal white adipose tissue depots could have stromal vascular fractions (SVF) with distinct composition and adipose stem cells (ASC) that would differentially account for the pathogenesis of obesity. METHODS: In order to evaluate the distribution of SVF subpopulations, samples of subcutaneous, preperitoneal and visceral adipose tissues from morbidly obese women (n = 12, BMI: 46...
2017: PloS One
https://www.readbyqxmd.com/read/28321259/evaluation-of-three-devices-for-the-isolation-of-the-stromal-vascular-fraction-from-adipose-tissue-and-for-asc-culture-a-comparative-study
#14
Jonathan Rodriguez, Anne-Sophie Pratta, Nacira Abbassi, Hugo Fabre, Fanny Rodriguez, Cyrille Debard, Jacqueline Adobati, Fabien Boucher, Frédéric Mallein-Gerin, Céline Auxenfans, Odile Damour, Ali Mojallal
Adipose-derived stem/stromal cells (ASCs) reside in the stromal vascular fraction (SVF) of adipose tissue (AT) and can be easily isolated. However, extraction of the SVF from lipoaspirate is a critical step in generating ASC, and semiautomated devices have been developed to enhance the efficacy and reproducibility of the outcomes and to decrease manipulation and contamination. In this study, we compared the reference method used in our lab for SVF isolation from lipoaspirate, with three medical devices: GID SVF-1™, Puregraft™, and Stem...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28316259/the-adipose-stromal-vascular-fraction-as-a-complex-cellular-source-for-tissue-engineering-applications
#15
Venkat M Ramakrishnan, Nolan L Boyd
A major challenge in tissue engineering is the generation of sufficient volumes of viable tissue for organ transplant. The development of a stable, mature vasculature is required to sustain the metabolic and functional activities of engineered tissues. Adipose stromal vascular fraction (SVF) cells are an easily accessible, heterogeneous cell system comprised of endothelial cells, macrophages, pericytes, and various stem cell populations. Collectively, SVF has been shown to spontaneously form vessel-like networks in vitro and robust, patent, and functional vasculatures in vivo...
April 13, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28290502/extracellular-matrix-and-%C3%AE-5%C3%AE-1-integrin-signaling-control-the-maintenance-of-bone-formation-capacity-by-human-adipose-derived-stromal-cells
#16
Nunzia Di Maggio, Elisa Martella, Agne Frismantiene, Therese J Resink, Simone Schreiner, Enrico Lucarelli, Claude Jaquiery, Dirk J Schaefer, Ivan Martin, Arnaud Scherberich
Stromal vascular fraction (SVF) cells of human adipose tissue have the capacity to generate osteogenic grafts with intrinsic vasculogenic properties. However, adipose-derived stromal/stem cells (ASC), even after minimal monolayer expansion, display poor osteogenic capacity in vivo. We investigated whether ASC bone-forming capacity may be maintained by culture within a self-produced extracellular matrix (ECM) that recapitulates the native environment. SVF cells expanded without passaging up to 28 days (Unpass-ASC) deposited a fibronectin-rich extracellular matrix and displayed greater clonogenicity and differentiation potential in vitro compared to ASC expanded only for 6 days (P0-ASC) or for 28 days with regular passaging (Pass-ASC)...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28283911/recovery-of-renal-function-after-administration-of-adipose-tissue-derived-stromal-vascular-fraction-in-rat-model-of-acute-kidney-injury-induced-by-ischemia-reperfusion-injury
#17
Chunwoo Lee, Myoung Jin Jang, Bo Hyun Kim, Jin Young Park, Dalsan You, In Gab Jeong, Jun Hyuk Hong, Choung-Soo Kim
Acute kidney injury (AKI) induced by ischemia/reperfusion (I/R) injury is a major challenge in critical care medicine. The purpose of this study is to determine the therapeutic effects of the adipose-tissue-derived stromal vascular fraction (SVF) and the optimal route for SVF delivery in a rat model of AKI induced by I/R injury. Fifty male Sprague-Dawley rats were randomly divided into five groups (10 animals per group): sham, nephrectomy control, I/R injury control, renal arterial SVF infusion and subcapsular SVF injection...
March 10, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28276451/comparison-of-human-adipose-stromal-vascular-fraction-and-adipose-derived-mesenchymal-stem-cells-for-the-attenuation-of-acute-renal-ischemia-reperfusion-injury
#18
Liuhua Zhou, Qun Song, Jiangwei Shen, Luwei Xu, Zheng Xu, Ran Wu, Yuzheng Ge, Jiageng Zhu, Jianping Wu, Quanliang Dou, Ruipeng Jia
Stem cells therapy has been suggested as a promising option for the treatment of acute kidney injury (AKI). This study was performed to compare the abilities of xenogenic transplantation of human adipose stromal vascular fraction (SVF) and adipose-derived mesenchymal stem cells (AdMSCs) to facilitate the recovery of renal function and structure in a rat model of ischemia/reperfusion (IR) induced AKI. SVF or AdMSCs were transplanted to the injured kidney through intra-parenchymal injection. Significantly improved renal function and reduced tubular injury were observed in SVF and AdMSCs groups...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28270523/id1-promotes-obesity-by-suppressing-brown-adipose-thermogenesis-and-white-adipose-browning
#19
Mallikarjun Patil, Bal Krishan Sharma, Sawsan Elattar, Judith Chang, Shweta Kapil, Jinling Yuan, Ande Satyanarayana
Obesity results from increased energy intake or defects in energy expenditure. Brown adipose tissue (BAT) is specialized for energy expenditure, a process called adaptive thermogenesis. Peroxisome proliferator activated receptor γ coactivator 1α (PGC1α) controls BAT-mediated thermogenesis by regulating the expression of Ucp1 Inhibitor of differentiation 1 (Id1) is a helix-loop-helix transcription factor that plays important roles in cell proliferation and differentiation. Here, we demonstrate a novel function of Id1 in BAT thermogenesis and programming of beige adipocytes in white adipose tissue (WAT)...
March 7, 2017: Diabetes
https://www.readbyqxmd.com/read/28258850/angiogenic-characteristics-of-human-stromal-vascular-fraction-in-ischemic-hindlimb
#20
Enze Jin, Dong-Sik Chae, Mina Son, Sung-Whan Kim
INTRODUCTION: In this study, we sought to characterize the angio-vasculogenic property of human adipose tissue-derived stromal vascular fraction (SVF) and to determine the therapeutic potential of SVF in the context of experimental ischemia. Although human SVF is used for cell therapy, its angiogenic and vasculogenic characteristics have not been fully elucidated. METHODS AND RESULTS: We conducted flow cytometry, microarray, quantitative (q)-PCR, Matrigel tube formation assays and in vivo therapeutic assays using an ischemic hind limb mouse model...
May 1, 2017: International Journal of Cardiology
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