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https://www.readbyqxmd.com/read/29766760/osteoinduction-by-ex-vivo-bone-morphogenetic-protein-gene-delivery-is-independent-of-cell-type
#1
Loek Loozen, Moyo C Kruyt, Angela Vandersteen, Angela H M Kragten, Michiel Croes, F Cumhur Oner, Jacqueline Alblas
Ex vivo non-viral gene delivery of bone-inductive factors has the potential to heal bone defects. Due to their inherent role in new bone formation, multipotent stromal cells (MSCs) have been studied as the primary target cell for gene delivery in a preclinical setting. The relative contribution of autocrine and paracrine mechanisms, and the need of osteogenic cells, remains unclear. This study investigates the contribution of MSCs as producer of transgenic BMPs and to what extent the seeded MSCs participate in actual osteogenesis...
May 16, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29764011/efficacy-and-safety-of-autologous-stromal-vascular-fraction-in-the-treatment-of-empty-nose-syndrome
#2
Do-Youn Kim, Hye Ran Hong, Eun Wook Choi, Sang Won Yoon, Yong Ju Jang
Objectives: Regenerative treatment using stem cells may serve as treatment option for empty nose syndrome (ENS), which is caused by the lack of turbinate tissue and deranged nervous system in the nasal cavity. We aimed to assess the efficacy and safety of the autologous stromal vascular fraction (SVF) in the treatment of ENS. Methods: In this prospective observational clinical study, we enrolled 10 ENS patients who volunteered to undergo treatment of ENS through the injection of autologous SVF...
May 16, 2018: Clinical and Experimental Otorhinolaryngology
https://www.readbyqxmd.com/read/29761573/using-fat-to-fight-disease-a-systematic-review-of-non-homologous-adipose-derived-stromal-stem-cell-therapies
#3
REVIEW
Marjorie E Bateman, Amy L Strong, Jeffrey M Gimble, Bruce A Bunnell
OBJECTIVE: The objective of this review is to describe the safety and efficacy of ASC and SVF in treating common diseases and the next steps in research that must occur prior to clinical use. EVIDENCE REVIEW: Pubmed, Ovid Medline, Embase, Web of Science, and the Cochrane Library were searched for articles about use of SVF or ASC for disease therapy published between 2012 and 2017. One meta-analysis, 2 randomized controlled trials, and 16 case series were included, representing 844 human patients...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29753026/chronic-hyperinsulinemia-promotes-meta-inflammation-and-extracellular-matrix-deposition-in-adipose-tissue-implications-of-nitric-oxide
#4
Durgesh Kumar, Kripa Shankar, Saraswati Patel, Abhishek Gupta, Salil Varshney, Sanchita Gupta, Sujith Rajan, Ankita Srivastava, Achchhe Lal Vishwakarma, Anil N Gaikwad
Various imperative studies support the notion that hyperinsulinemia (HI) itself serves as the common link between adipose tissue inflammation (ATI) and metabolic syndrome. However, the contribution of HI mediated ATI and its metabolic consequences are yet to be explored. We induced chronic HI per se in mice by administration of exogenous insulin for 8 weeks through mini-osmotic pumps. For the reduction of circulating insulin in response to excess calorie intake, we have partially ablated β-cells by using streptozotocin (STZ) in the diet-induced obesity (DIO) and genetic mice models (db/db)...
May 9, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29751821/improved-gmp-compliant-approach-to-manipulate-lipoaspirates-to-cryopreserve-stromal-vascular-fraction-and-to-expand-adipose-stem-cells-in-xeno-free-media
#5
Francesco Agostini, Francesca Maria Rossi, Donatella Aldinucci, Monica Battiston, Elisabetta Lombardi, Stefania Zanolin, Samuele Massarut, Pier Camillo Parodi, Alessandro Da Ponte, Giovanni Tessitori, Barbara Pivetta, Cristina Durante, Mario Mazzucato
BACKGROUND: The stromal vascular fraction (SVF) derived from adipose tissue contains adipose-derived stromal/stem cells (ASC) and can be used for regenerative applications. Thus, a validated protocol for SVF isolation, freezing, and thawing is required to manage product administration. To comply with Good Manufacturing Practice (GMP), fetal bovine serum (FBS), used to expand ASC in vitro, could be replaced by growth factors from platelet concentrates. METHODS: Throughout each protocol, GMP-compliant reagents and devices were used...
May 11, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29745446/effects-of-vegf-ang-1-pla-nano-sustained-release-microspheres-on-proliferation-and-differentiation-of-adscs
#6
Yucang He, Zihao Li, Zhuojie Chen, Xiaofang Yu, Ziwan Ji, Jingping Wang, Yao Qian, Liqun Li
The improvement of fat graft viability might depend on the presence of multipotent resident adipose derived stem cells (ADSCs) which is the important component of stromal vascular fraction (SVF). Vascular endothelial growth factor (VEGF) and angiogenin-1 (Ang-1) are responsible for neovascularization. However, their half-life is too short to produce a biological effect. We thus investigated whether VEGF-ANG-1-polylactic acid (PLA) microspheres could enhance the angiogenic properties of ADSCs. PLA microspheres containing VEGF and ANG-1 were prepared by in vitro ultrasonic emulsification and characterized according to their encapsulation efficiency (EE), drug-loading rate (DL), particle size and drug release...
May 10, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29738484/human-macrophages-preferentially-infiltrate-the-superficial-adipose-tissue
#7
Giuseppe Cappellano, Evi M Morandi, Johannes Rainer, Philipp Grubwieser, Katharina Heinz, Dolores Wolfram, David Bernhard, Susanne Lobenwein, Gerhard Pierer, Christian Ploner
Human abdominal subcutaneous adipose tissue consists of two individual layers—the superficial adipose tissue (SAT) and deep adipose tissue (DAT)—separated by the Scarpa’s fascia. The present study focuses on the analysis of morphological and immunological differences of primary adipocytes, adipose-derived stem cells (ASC), and tissue-infiltrating immune cells found in SAT and DAT. Adipocytes and stromal vascular fraction (SVF) cells were isolated from human SAT and DAT specimens and phenotypically characterized by in vitro assays...
May 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29722790/utility-of-adipocyte-fractions-in-fat-grafting-in-an-athymic-rat-model
#8
Yucel Akgul, Ryan Constantine, Mason Bartels, Philipp Scherer, Kathryn Davis, Jeffrey M Kenkel
Background: Multiple processing and handling methods of autologous fat yields to variations in graft retention and viability, which results in unpredictable clinical outcomes. Objective: This study aims to understand the skin effects of fat graft preparations that contain a varying ratio of free-lipid and stem-cell-bearing stromal vascular fractions (SVF). Methods: Lipoaspirates from consenting patients were processed into emulsified fat and then SVF and adipocyte fractions (free-lipid)...
May 2, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29713784/limited-evidence-for-adipose-derived-stem-cell-therapy-on-the-treatment-of-osteoarthritis
#9
REVIEW
Eoghan T Hurley, Youichi Yasui, Arianna L Gianakos, Dexter Seow, Yoshiharu Shimozono, Gino M M J Kerkhoffs, John G Kennedy
PURPOSE: The purpose of this systematic review is to evaluate the effects of adipose derived mesenchymal stem cells (ADSCs) in the treatment of osteoarthritis (OA) in the clinical setting. METHODS: A literature search was performed in the MEDLINE, EMBASE, and The Cochrane Library Database up to January 2017 for inclusion and exclusion criteria. Criteria for inclusion were clinical studies demonstrating the effects of ADSCs on OA, and written in English. The following variables were analyzed: donor site, volume of adipose tissue, preparation of ADSCs, clinical outcomes, and complication rate...
April 30, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29704660/genetic-and-epigenetic-control-of-adipose-development
#10
REVIEW
Olga Gulyaeva, Jon Dempersmier, Hei Sook Sul
White adipose tissue (WAT) is the primary energy storage organ and its excess contributes to obesity, while brown adipose tissue (BAT) and inducible thermogenic (beige/brite) adipocytes in WAT dissipate energy via Ucp1 to maintain body temperature. BAT and subcutaneous WAT develop perinatally while visceral WAT forms after birth from precursors expressing distinct markers, such as Myf5, Pref-1, Wt1, and Prx1, depending on the anatomical location. In addition to the embryonic adipose precursors, a pool of endothelial cells or mural cells expressing Pparγ, Pdgfrβ, Sma and Zfp423 may become adipocytes during WAT expansion in adults...
April 25, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29698714/ph-responsive-delivery-of-griffithsin-from-electrospun-fibers
#11
Kevin M Tyo, Jinghua Duan, Pravallika Kollipara, Mark Vincent C Dela Cerna, Donghan Lee, Kenneth E Palmer, Jill M Steinbach-Rankins
Human immunodeficiency virus (HIV-1) affects over 36 million people globally. Current prevention strategies utilize antiretrovirals that have demonstrated protection, but result in antiviral resistance, adverse toxicity, and require frequent administration. A novel biologic, griffithsin (GRFT), has demonstrated outstanding safety and efficacy against laboratory and primary HIV isolates and against intravaginal murine herpes simplex virus 2 (HSV-2) challenge, making it a promising microbicide candidate. However, transient activity and instability remain concerns surrounding biologic delivery, particularly in the harsh environment of the female reproductive tract (FRT)...
April 23, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29687389/isolation-of-murine-adipose-derived-stromal-stem-cells-using-an-explant-culture-method
#12
Jie Li, Hui Li, Weidong Tian
Adipose tissue provides valuable cell source for tissue engineering, regenerative medicine, and adipose tissue biology studies. The most widely used adipose-derived stromal/stem cells (ASCs) isolation protocol involves enzymatic digestion with collagenase. However, the yield of the method is poor even impossible to collect enough stromal vascular fraction (SVF) for expansion when the sample size is small, for instance only new born mice is available for cell culture. Here, we describe an efficient protocol for the isolation and expansion of ASCs using explant culture...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29687377/a-method-for-isolation-of-stromal-vascular-fraction-cells-in-a-clinically-relevant-time-frame
#13
Joel A Aronowitz, Ryan A Lockhart, Cloe S Hakakian
There is increasing interest in the clinical applications of adipose-derived stem cells (ASCs) and the stromal vascular fraction (SVF) based on promising preclinical data. As adipose-derived therapeutics begin to translate into the clinical setting, it is important to maintain patient safety as well as uniformity in technique. Here, we describe a method for isolation of stromal vascular fraction cells in a clinically relevant time frame. Analytical laboratory techniques are mentioned, but respective protocols are not provided here...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29687376/isolation-and-flow-cytometric-analysis-of-the-stromal-vascular-fraction-isolated-from-mouse-adipose-tissue
#14
Annie C Bowles, Alan Tucker, Bruce A Bunnell
Evidence from preclinical research and clinical trials demonstrates the use of the stromal vascular fraction (SVF) as therapy for numerous indications. These results demonstrate that autologous SVF is not only safe and effective but provides robust anti-inflammatory, immunomodulatory, and reparative effects in vivo. The potency of the SVF is attributed to the cellular composition which includes adipose-derived stem cells (ASCs), adipocytes, endothelial cells, and various immune cells. As the name would suggest, these SVF cells are derived from the stromal compartment of adipose, or fat...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29667617/combination-of-stromal-vascular-fraction-and-ad-comp-ang1-gene-therapy-improves-long-term-therapeutic-efficacy-for-diabetes-induced-erectile-dysfunction
#15
Guo-Nan Yin, Lin Wang, Xiang-Nan Lin, Lei Shi, Zhen-Lin Gao, Feng-Chan Han, Ping Li, Yin-Chuan Jin, Jun-Kyu Suh, Ji-Kan Ryu, Xiong Wang, Hai-Rong Jin
Men with diabetic erectile dysfunction (ED) respond poorly to the currently available oral phosphodiesterase-5 inhibitors. Therefore, functional therapies for diabetic ED are needed. Stromal vascular fraction (SVF) and the adenovirus-mediated cartilage oligomeric matrix angiopoietin-1 (Ad-COMP-Ang1) gene are known to play critical roles in penile erection. We previously reported that SVF and Ad-COMP-Ang1 have only a short-term effect in restoring erectile function. Further improvements to ED therapy are needed for long-lasting effects...
April 17, 2018: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29663271/regenerative-potential-and-inflammation-induced-secretion-profile-of-human-adipose-derived-stromal-vascular-cells-are-influenced-by-donor-variability-and-prior-breast-cancer-diagnosis
#16
Adrienne M Parsons, Deborah M Ciombor, Paul Y Liu, Eric M Darling
Adipose tissue contains a heterogeneous population of stromal vascular fraction (SVF) cells that work synergistically with resident cell types to enhance tissue healing. Ease of access and processing paired with therapeutic promise make SVF cells an attractive option for autologous applications in regenerative medicine. However, inherent variability in SVF cell therapeutic potential from one patient to another hinders prognosis determination for any one person. This study investigated the regenerative properties and inflammation responses of thirteen, medically diverse human donors...
April 16, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29661028/development-of-large-scale-manufacturing-of-adipose-derived-stromal-cells-for-clinical-applications-using-bioreactors-and-human-platelet-lysate
#17
Mandana Haack-Sørensen, Morten Juhl, Bjarke Follin, Rebekka Harary Søndergaard, Maria Kirchhoff, Jens Kastrup, Annette Ekblond
In vitro expanded adipose-derived stromal cells (ASCs) are a useful resource for tissue regeneration. Translation of small-scale autologous cell production into a large-scale, allogeneic production process for clinical applications necessitates well-chosen raw materials and cell culture platform. We compare the use of clinical-grade human platelet lysate (hPL) and fetal bovine serum (FBS) as growth supplements for ASC expansion in the automated, closed hollow fibre quantum cell expansion system (bioreactor)...
April 17, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29656608/combined-therapy-for-critical-limb-ischemia-biomimetic-plga-microcarriers-potentiates-the-pro-angiogenic-effect-of-adipose-tissue-stromal-vascular-fraction-cells
#18
Laurence Hoareau, Florian Fouchet, Cynthia Planesse, Sophie Mirbeau, Laurence Sindji, Emmanuel Delay, Régis Roche, Claudia N Montero-Menei, Franck Festy
We propose a regenerative solution in the treatment of critical limb ischemia. Poly-lactic/glycolic acid (PLGA) microcarriers were prepared and coated with laminin to be sterilized through γ-irradiation of 25 kGy at low temperature. Stromal vascular fraction (SVF) cells were extracted through enzymatic digestion of adipose tissue. Streptozotocin-induced diabetic mice underwent arteriotomy and received an administration of SVF cells combined or not with biomimetic microcarriers. Functional evaluation of the ischemic limb was then reported and tissue reperfusion was evaluated through fluorescence molecular tomography (FMT)...
April 14, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29649714/effects-of-urban-form-on-the-urban-heat-island-effect-based-on-spatial-regression-model
#19
Chaohui Yin, Man Yuan, Youpeng Lu, Yaping Huang, Yanfang Liu
The urban heat island (UHI) effect is becoming more of a concern with the accelerated process of urbanization. However, few studies have examined the effect of urban form on land surface temperature (LST) especially from an urban planning perspective. This paper used spatial regression model to investigate the effects of both land use composition and urban form on LST in Wuhan City, China, based on the regulatory planning management unit. Landsat ETM+ image data was used to estimate LST. Land use composition was calculated by impervious surface area proportion, vegetated area proportion, and water proportion, while urban form indicators included sky view factor (SVF), building density, and floor area ratio (FAR)...
April 9, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29621477/stromal-vascular-fraction-promotes-fibroblast-migration-and-cellular-viability-in-a-hyperglycemic-microenvironment-through-up-regulation-of-wound-healing-cytokines
#20
Shaun S Tan, Xin Yi Yeo, Zhen Chang Liang, Sunil K Sethi, Samuel S W Tay
Diabetic wounds have impaired healing and a propensity for further morbidity, which may result in amputations. Stromal vascular fraction (SVF) is an autologous source of heterogeneous cell population obtained from adipose tissue, which is rich in stem cells and presents little immunogenicity to the host. In this study, we hypothesized that murine fibroblasts subjected to hyperglycemic conditions co-treated with SVF exhibit greater functional activity through the colorimetric MTT assay and a cell-monolayer in-vitro scratch assay...
April 2, 2018: Experimental and Molecular Pathology
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