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Fat derived stem cell

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https://www.readbyqxmd.com/read/28526415/lnk-deficiency-aggregates-palmitate-induced-preadipocyte-apoptosis
#1
Jie-Yi Du, Chen-Chen Jin, Guo-Hao Wang, Xiong-Qing Huang, Jian-Ding Cheng, Xue-Jun Wen, Xiao-Miao Zhao, Guan-Lei Wang
LNK (SH2B3) is an intracellular adaptor protein that negatively regulates cellular proliferation or self-renewal of hematopoietic stem cells and some other progenitor cells. LNK is also recognized as a key regulator of insulin resistance and inflammatory responses in several tissues and organs. It is unknown the function of LNK in adipose tissue. We previously demonstrated that type 2 diabetes mellitus (T2DM) mouse model had elevated serum free fatty acids (FFAs) levels and increased preadipocyte apoptosis in visceral fat tissue, showing the occurrence of lipotoxicity...
May 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28526089/adipose-derived-mesenchymal-stem-cells-from-liposuction-and-resected-fat-are-feasible-sources-for-regenerative-medicine
#2
Sandra Schneider, Marina Unger, Martijn van Griensven, Elizabeth R Balmayor
BACKGROUND: The use of mesenchymal stem cells (MSCs) in research and in regenerative medicine has progressed. Bone marrow as a source has drawbacks because of subsequent morbidities. An easily accessible and valuable source is adipose tissue. This type of tissue contains a high number of MSCs, and obtaining higher quantities of tissue is more feasible. Fat tissue can be harvested using different methods such as liposuction and resection. First, a detailed isolation protocol with complete characterization is described...
May 19, 2017: European Journal of Medical Research
https://www.readbyqxmd.com/read/28518106/isolation-of-murine-adipose-tissue-derived-microvascular-fragments-as-vascularization-units-for-tissue-engineering
#3
Florian S Frueh, Thomas Später, Claudia Scheuer, Michael D Menger, Matthias W Laschke
A functional microvascular network is of pivotal importance for the survival and integration of engineered tissue constructs. For this purpose, several angiogenic and prevascularization strategies have been established. However, most cell-based approaches include time-consuming in vitro steps for the formation of a microvascular network. Hence, they are not suitable for intraoperative one-step procedures. Adipose tissue-derived microvascular fragments (ad-MVF) represent promising vascularization units. They can be easily isolated from fat tissue and exhibit a functional microvessel morphology...
April 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28510634/autologous-adipose-derived-tissue-matrix-part-i-biologic-characteristics
#4
Stephen A Schendel
Background: Autologous collagen is an ideal soft tissue filler and may serve as a matrix for stem cell implantation and growth. Procurement of autologous collagen has been limited, though, secondary to a sufficient source. Liposuction is a widely performed and could be a source of autologous collagen. Objectives: The amount of collagen and its composition in liposuctioned fat remains unknown. The purpose of this research was to characterize an adipose-derived tissue-based product created using ultrasonic cavitation and cryo-grinding...
May 16, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28501775/vitamin-d-correlation-with-biochemical-and-body-composition-changes-in-a-southern-brazilian-population-and-induction-of-cytotoxicity-in-mesenchymal-stem-cells-derived-from-human-adipose-tissue
#5
João Renato Pesarini, Rodrigo Juliano Oliveira, Lucas Roberto Pessatto, Andréia Conceição Milan Brochado Antoniolli-Silva, Ingrid Felicidade, Nance Beyer Nardi, Melissa Camassola, Mário Sérgio Mantovani, Lúcia Regina Ribeiro
Studies have shown that metabolic disorders, serum inflammatory markers and weight gain (obesity) are correlated with vitamin D deficiency. Therefore, the present study correlated the serum calcidiol (s25(OH)D3) levels in a sample of individuals from southern Brazil with variables related to metabolic disorders, obesity and lifestyle habits and assessed the cytotoxic effect of calcitriol on adipose tissue-derived mesenchymal stem cells (ADSCs). The results showed a 79.23% prevalence of hypovitaminosis D in the study population and a correlation (p<0...
May 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28489652/histone-deacetylase-inhibitors-enhance-cytotoxicity-towards-breast-tumors-while-preserving-the-wound-healing-function-of-adipose-derived-stem-cells
#6
Kiavash R Koko, Shaohua Chang, Ashleigh L Hagaman, Marc W Fromer, Ryan S Nolan, John P Gaughan, Ping Zhang, Jeffrey P Carpenter, Spencer A Brown, Martha Matthews, Dorothy Bird
INTRODUCTION: Paclitaxel improves the oncologic response of breast cancer resections; however, it may negatively affect the wound-healing potential of human adipose-derived stem cells (hASCs) for fat grafting and reconstructive surgery. Histone deacetylase inhibitors (HDACis) modify the epigenetic regulation of gene expression and stabilize microtubules similarly to paclitaxel, thus, creating a synergistic mechanism of cell cycle arrest. We aim to combine these drugs to enhance cytotoxicity towards breast cancer cells, while preserving the wound-healing function of hASCs for downstream reconstructive 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
#7
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/28484089/xenogeneic-human-umbilical-cord-derived-mesenchymal-stem-cells-reduce-mortality-in-rats-with-acute-respiratory-distress-syndrome-complicated-by-sepsis
#8
Fan-Yen Lee, Kuan-Hung Chen, Christopher Glenn Wallace, Pei-Hsun Sung, Jiunn-Jye Sheu, Sheng-Ying Chung, Yung-Lung Chen, Hung-I Lu, Sheung-Fat Ko, Cheuk-Kwan Sun, Hsin-Ju Chiang, Hsueh-Wen Chang, Mel S Lee, Hon-Kan Yip
This study tested the hypothesis that xenogeneic human umbilical cord-derived mesenchymal stem cell (HUCDMSC) therapy would improve survival rates in rats with acute respiratory distress-syndrome (ARDS, induction by 48 h inhalation of 100% oxygen) and sepsis-syndrome (SS, induction by cecal-ligation and puncture) (ARDS-SS). Adult-male Sprague-Dawley rats were categorized into group 1 (sham-controls), group 2 (ARDS-SS), group 3 [ARDS-SS+HUCDMSC (1.2 x106 cells administered 1 h after SS-induction)], and group 4 [ARDS-SS+HUCDMSC (1...
April 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28483594/differences-in-the-microrna-profiles-of-subcutaneous-adipose-derived-stem-cells-and-omental-adipose-derived-stem-cells
#9
Feihu Hu, Peng Xu, Bo Sun, Zhongdang Xiao
Adipose-derived stem cells (ASCs) isolated from subcutaneous (SC) and omentum (O) share similar characteristics, but the differences in their microRNA profiles are mostly unknown. In this study, besides significant differences in cell morphology and the differentiation ability of the two types of ASCs, the microRNA expression profiles of the cell lines were determined using SOLiD next-generation sequencing. The in-depth analysis found that miR-214, miR-222, miR-181a, miR-26a and miR-23/27/24 clusters and miR-375 act as "markers" to distinguish the different fat deposit-derived ASCs...
May 5, 2017: Gene
https://www.readbyqxmd.com/read/28483278/specific-visible-radiation-facilitates-lipolysis-in-mature-3t3-l1-adipocytes-via-rhodopsin-dependent-%C3%AE-3-adrenergic-signaling
#10
Phil June Park, Jae Youl Cho, Eun-Gyung Cho
The regulation of fat metabolism is important for maintaining functional and structural tissue homeostasis in biological systems. Reducing excessive lipids has been an important concern due to the concomitant health risks caused by metabolic disorders such as obesity, adiposity and dyslipidemia. A recent study revealed that unlike conventional care regimens (e.g., diet or medicine), low-energy visible radiation (VR) regulates lipid levels via autophagy-dependent hormone-sensitive lipase (HSL) phosphorylation in differentiated human adipose-derived stem cells...
April 27, 2017: European Journal of Cell Biology
https://www.readbyqxmd.com/read/28475446/use-of-fat-transfer-to-treat-a-chronic-non-healing-post-radiation-ulcer-a-case-study
#11
A Mohan, S Singh
OBJECTIVE: Problematic wound healing and ulceration in radiation-damaged tissue is a surgical challenge. Clinical studies have shown that grafting fat tissue in an irradiated area can improve the quality of the skin and has regenerative effects. This case study describes how fat transfer led to the healing of a chronic ulcer resistant to other forms of treatment. CASE HISTORY: A 67-year-old lady with a chronic, non-healing ulcer in her leg had a squamous cell carcinoma excised, followed by radiotherapy...
May 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28475114/melatonin-and-vitamin-d-interfere-with-the-adipogenic-fate-of-adipose-derived-stem-cells
#12
Valentina Basoli, Sara Santaniello, Sara Cruciani, Giorgio Carlo Ginesu, Maria Laura Cossu, Alessandro Palmerio Delitala, Pier Andrea Serra, Carlo Ventura, Margherita Maioli
Adipose-derived stem cells (ADSCs) represent one of the cellular populations resident in adipose tissue. They can be recruited under certain stimuli and committed to become preadipocytes, and then mature adipocytes. Controlling stem cell differentiation towards the adipogenic phenotype could have a great impact on future drug development aimed at counteracting fat depots. Stem cell commitment can be influenced by different molecules, such as melatonin, which we have previously shown to be an osteogenic inducer...
May 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28470033/adipose-derived-stem-cells-for-breast-reconstruction-after-breast-surgery-preliminary-results
#13
Anastasios Tsekouras, Dimitrios Mantas, Diamantis I Tsilimigras, Ioannis Ntanasis-Stathopoulos, Michael Kontos, George C Zografos
Enrichment of fat grafts with adipose-derived stem cells (ASCs) has gained popularity due to promising preliminary results. Herein, we present two patients who were treated with ASC-enriched fat grafts following mastectomy and breast reconstruction with implants. Both exhibited favorable outcomes achieving a significant improvement of breast defects and asymmetries.
2017: Case Reports in Plastic Surgery & Hand Surgery
https://www.readbyqxmd.com/read/28464239/combined-effects-of-bone-morphogenetic-protein-10-and-crossveinless-2-on-cardiomyocyte-differentiation-in-mouse-adipocyte-derived-stem-cells
#14
Medet Jumabay, Jiayinaguli Zhumabai, Nurlan Mansurov, Katharine C Niklason, Pierre J Guihard, Alan M Fogelman, Luisa Iruela-Arispe, Yucheng Yao, Arman Saparov, Kristina I Boström
Bone morphogenetic protein (BMP) 10, a cardiac-restricted BMP family member, is essential in cardiomyogenesis, especially during trabeculation. Crossveinless-2 [CV2, also known as BMP endothelial cell precursor derived regulator (BMPER)] is a BMP-binding protein that modulates the activity of several BMPs. The objective of this study was to examine the combined effects of BMP10 and CV2 on cardiomyocyte differentiation using mouse dedifferentiated fat (mDFAT) cells, which spontaneously differentiate into cardiomyocyte-like cells, as a model...
May 2, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28463545/meniscal-tissue-engineering-using-aligned-collagen-fibrous-scaffolds-comparison-of-different-human-cell-sources
#15
Jihye Baek, Sujata Sovani, Wonchul Choi, Sungho Jin, Shawn P Grogan, Darryl D'Lima
Hydrogel and electrospun scaffold materials support cell attachment and neotissue development and can be tuned to structurally and mechanically resemble native ECM by altering either electrospun fiber or hydrogel properties. In this study, we examined meniscus tissue generation from different human cell sources including meniscus cells derived from vascular and avascular regions, bone marrow-derived mesenchymal stem cells (hMSC), synovial cells, and cells from the infrapatellar fat pad (IPFP). All cells were seeded onto aligned electrospun collagen type I scaffolds and were optionally encapsulated in a tricomponent hydrogel...
May 2, 2017: Tissue Engineering. Part A
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
#16
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/28445518/use-of-human-fat-grafting-in-the-prevention-of-perineural-adherence-experimental-study-in-athymic-mouse
#17
Mario Cherubino, Igor Pellegatta, Alessandro Crosio, Luigi Valdatta, Stefano Geuna, Rosalba Gornati, Pierluigi Tos
Perineural adherences represent a problem after surgery involving peripheral neural system. Fat-grafting with adipose derived stem cells (ASCs) with their pro-regenerative characteristics can be important to prevent the neural damage or to facilitate the neural regeneration. Our idea was to use the fat-grafting as an anti-adherence device and test its efficacy on a postsurgical scar animal model and comparing to an antiadhesive gel. 32 athymic mice were operated under magnification, we exposed both sciatic nerves...
2017: PloS One
https://www.readbyqxmd.com/read/28445363/indomethacin-enhances-fat-graft-retention-by-up-regulating-adipogenic-genes-and-reducing-inflammation
#18
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/28439674/adipose-derived-stem-cell-asc-enriched-fat-grafting-experiments-using-white-rabbits-and-an-automated-cell-processing-apparatus
#19
Natsuko Kakudo, Naoki Morimoto, Takeshi Ogawa, Masakatsu Hihara, Fangyuan Lai, Kenji Kusumoto
The grafting of fat mixed with adipose-derived stem cells (ASCs) is being increasingly applied to compensate for the disadvantages of previous fat grafting methods. Devices that automatically isolate fat stem cells also have recently been developed. ASCs were isolated from the inguinal region of White rabbits using Icellator(®), and the number of cells and their viability were measured. The cell count per fat graft (mL) was adjusted to the following concentrations and subcutaneously transplanted into the back: Control group, Fat + PBS; Fat + ASCs (×0...
April 24, 2017: Medical Molecular Morphology
https://www.readbyqxmd.com/read/28423354/cd54-rabbit-adipose-derived-stem-cells-overexpressing-hif-1%C3%AE-facilitate-vascularized-fat-flap-regeneration
#20
De-Quan Li, Guan-Ming Lu, Yi-Dan Liang, Zhi-Jie Liang, Min-Hong Huang, Qi-Liu Peng, Dong-Hua Zou, Rong-He Gu, Fang-Tian Xu, Hui Gao, Zhen-Dong Chen, Guang-Yi Chi, Zhong-Heng Wei, Li Chen, Hong-Mian Li
Fat flap transplantation is frequently performed in patients suffering from soft tissue defects resulting from disease or trauma. This study explored the feasibility of constructing vascularized fat flaps using rabbit adipose-derived stem cells (rASCs) and collagen scaffolds in a rabbit model. We evaluated rASCs proliferation, paracrine function, adipogenesis, vascularization, and CD54 expression, with or without HIF-1α transfection in vitro and in vivo. We observed that adipogenic differentiation potential was greater in rASCs with high CD54 expression (CD54+rASCs) than in those with low expression (CD54-rASCs), both in vitro and in vivo...
April 1, 2017: Oncotarget
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