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Stromal vascular fraction

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https://www.readbyqxmd.com/read/28943249/effects-of-crenolanib-a-non-selective-inhibitor-of-pdgfr-in-a-mouse-model-of-transient-middle-cerebral-artery-occlusion
#1
Jianping Wang, Xiaojie Fu, Di Zhang, Lie Yu, Zhengfang Lu, Yufeng Gao, Xianliang Liu, Jiang Man, Sijia Li, Nan Li, Menghan Wang, Xi Liu, Xuemei Chen, Weidong Zang, Qingwu Yang, Jian Wang
Neurogenesis in the subventricular zone (SVZ) plays a vital role in neurologic recovery after stroke. However, only a small fraction of newly generated neuroblasts from the SVZ will survive long-term. Successful migration and survival of neuroblasts requires angiogenesis, lesion-derived chemo-attractants, and appropriate local microenvironments, which are partly regulated by the platelet-derived growth factor receptor (PDGFR) signaling pathway. In this study, we investigated the effects of PDGFR inhibition in a mouse model of transient middle cerebral artery occlusion (MCAO)...
September 21, 2017: Neuroscience
https://www.readbyqxmd.com/read/28941163/colorectal-wall-regeneration-resulting-from-the-association-of-chitosan-hydrogel-and-stromal-vascular-fraction-from-adipose-tissue
#2
Quentin Denost, Arnaud Pontallier, Etienne Buscail, Alexandra Montembault, Reine Bareille, Robin Siadous, Marlene Durand, Samantha Delmond, Laurent David, Laurence Bordenave
Chitosan hydrogel and Adipose Derived Stem Cells (ADCS) have been reported as the optimal partnership for colorectal tissue engineering. In that field, the aim of the current experiment was to asses, the interest of seeding ADSC on chitosan hydrogel patches in an in vivo comparative study and on a tube intended replace a colonic segment in an in vivo feasibility study. In the comparative study, a 2x3 cm colonic wall defect was performed in 20 swines and repaired by suturing a chitosan hydrogel patch: acellular matrix (Group A, n=10) vs...
September 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28938327/adipose-tissue-derived-stromal-vascular-fraction-increases-osteogenesis-in-an-experimental-design-zygomatic-bone-defect-model
#3
Gaye Toplu, Derya Ozcelik, Merdan Serin, Havva Erdem, Arzu Turkseven Topacoglu
INTRODUCTION: Facial bone defects are frequently encountered problems in clinical practice. Bone grafts, flaps, and alloplastic materials are often used in their treatment. This leads to donor site morbidity and prolongation of the operation. The authors have planned this study to examine whether adipose tissue derived stromal vascular fraction (SVF) has an osteogenic effect in the critical sized membranous bone defect of the zygomatic bone. MATERIALS AND METHODS: Twenty male Wistar Albino rats were used...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28922324/biological-properties-and-therapeutic-value-of-cryopreserved-fat-tissue
#4
Takanobu Mashiko, Szu-Hsien Wu, Koji Kanayama, Rintaro Asahi, Takako Shirado, Masanori Mori, Ataru Sunaga, Shunji Sarukawa, Hirokazu Uda, Kotaro Yoshimura
BACKGROUND: Fat grafting frequently requires multiple treatments and thus repeated liposuction to achieve treatment goals. The purpose of this study is to evaluate whether cryopreservation of adipose tissue may facilitate future fat grafting. METHODS: Lipoaspirates were harvested from six adult females and preserved using two cryopreservation methods: 1) simple cooling to -80˚C (cryo-1); or 2) programmed cooling to -190˚C (cryo-2). Fresh fat, cryo-1 fat, and cryo-2 fat were analyzed both in vitro and in vivo...
September 14, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28915522/comparison-of-platelet-rich-plasma-stromal-vascular-fraction-svf-or-svf-with-an-injectable-plga-nanofiber-scaffold-for-the-treatment-of-osteochondral-injury-in-dogs
#5
Samuel P Franklin, Aaron M Stoker, Chantelle C Bozynksi, Keiichi Kuroki, Kevin M Clarke, Jed K Johnson, James L Cook
No abstract text is available yet for this article.
September 15, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28915327/adipose-tissue-in-hiv-infection
#6
John R Koethe
HIV infection and antiretroviral therapy (ART) treatment exert diverse effects on adipocytes and stromal-vascular fraction cells, leading to changes in adipose tissue quantity, distribution, and energy storage. A HIV-associated lipodystrophic condition was recognized early in the epidemic, characterized by clinically apparent changes in subcutaneous, visceral, and dorsocervical adipose depots. Underlying these changes is altered adipose tissue morphology and expression of genes central to adipocyte maturation, regulation, metabolism, and cytokine signaling...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28905449/lull-pgm-system-a-suitable-technique-to-improve-the-regenerative-potential-of-autologous-fat-grafting
#7
Paolo G Morselli, Federico A Giorgini, Claudia Pazzini, Claudio Muscari
Autologous fat grafting and methods of purification of harvested tissue have become one of the most current themes in regenerative medicine. The aim of this study was to evaluate the in vitro regenerative potential of abdomen lipoaspirates subjected to a combined washing-decantation purifying procedure, the Lull pgm System (Lull). Blood cells and stromal-vascular fraction (SVF) cells contained in the aspirates were investigated and compared with those obtained through more conventional fat-processing methods, i...
September 14, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28902422/transplantation-of-non-cultured-stromal-vascular-fraction-cells-of-adipose-tissue-ameliorates-osteonecrosis-of-the-jaw-like-lesions-in-mice
#8
Shinichiro Kuroshima, Muneteru Sasaki, Kazunori Nakajima, Saki Tamaki, Hiroki Hayano, Takashi Sawase
The precise pathoetiology and effective treatment strategies for bisphosphonate-related osteonecrosis of the jaw (BRONJ) remain unknown. Transplantation of non-cultured stromal vascular fraction (SVF) cells has been demonstrated to be a useful method for regenerative medicine in place of stem cell therapy. This study investigated the effects of non-cultured SVF transplantation on tooth extraction socket healing in mice. Both chemotherapeutic/bisphosphonate combination therapy for 7 weeks and tooth extraction of maxillary first molars at 3 weeks after drug administration were performed using female C57BL/6J mice...
September 13, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28893630/engineered-axially-vascularized-osteogenic-grafts-from-human-adipose-derived-cells-to-treat-avascular-necrosis-of-bone-in-a-rat-model
#9
Tarek Ismail, Rik Osinga, Atanas Todorov, Alexander Haumer, Laurent A Tchang, Christian Epple, Nima Allafi, Nadia Menzi, René D Largo, Alexandre Kaempfen, Ivan Martin, Dirk J Schaefer, Arnaud Scherberich
BACKGROUND: Avascular necrosis of bone (AVN) leads to sclerosis and collapse of bone and joints. The standard of care, vascularized bone grafts, is limited by donor site morbidity and restricted availability. The aim of this study was to generate and test engineered, axially vascularized SVF cells-based bone substitutes in a rat model of AVN. METHODS: SVF cells were isolated from lipoaspirates and cultured onto porous hydroxyapatite scaffolds within a perfusion-based bioreactor system for 5 days...
September 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28875863/the-basic-mechanism-of-hair-growth-stimulation-by-adipose-derived-stem-cells-and-their-secretory-factors
#10
Chong-Hyun Won, Gyeong-Hun Park, Xunwei Wu, Thanh-Nga Tran, Ki-Young Park, Byung-Soon Park, Dong Young Kim, Ohsang Kwon, Kyu-Han Kim
Adipose-derived stem cells (ADSCs) are mesenchymal stem cells (MSCs) within the stromal vascular fraction of subcutaneous adipose tissue. ADSCs secrete growth factors and other proteins, and have been used to regenerate skin with satisfactory results. ADSCs promote hair growth in vitro, ex vivo, and in vivo. The conditioned media of ADSCs (ADSC-CM) increases the proliferation rate of human follicular cells. ADSCs-derived proteins improve hair growth and protect human dermal papilla cells against cytotoxic injury caused by androgen and reactive oxygen species...
August 29, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28873074/adipose-derived-cellular-therapies-in-solid-organ-and-vascularized-composite-allotransplantation
#11
Katlin B Stivers, Jason E Beare, Paula M Chilton, Stuart K Williams, Christina L Kaufman, James B Hoying
PURPOSE OF REVIEW: Controlling acute allograft rejection following vascularized composite allotransplantation requires strict adherence to courses of systemic immunosuppression. Discovering new methods to modulate the alloreactive immune response is essential for widespread application of vascularized composite allotransplantation. Here, we discuss how adipose-derived cellular therapies represent novel treatment options for immune modulation and tolerance induction in vascularized composite allotransplantation...
October 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28860871/first-in-man-intraglandular-implantation-of-stromal-vascular-fraction-and-adipose-derived-stem-cells-plus-platelet-rich-plasma-in-irradiation-induced-gland-damage-a-case-study
#12
Kristin Comella, Walter Bell
BACKGROUND: Stromal vascular fraction (SVF) is a mixture of cells which can be isolated from a mini-lipoaspirate of fat tissue. Platelet-rich plasma (PRP) is a mixture of growth factors and other nutrients which can be obtained from peripheral blood. Adipose-derived stem/stromal cells (ADSCs) can be isolated from fat tissue and expanded in culture. The SVF includes a variety of different cells such as ADSCs, pericytes, endothelial/progenitor cells, and a mix of different growth factors...
2017: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/28835892/adipose-extracellular-matrix-stromal-vascular-fraction-gel-secretes-angiogenic-factors-and-enhances-skin-wound-healing-in-a-murine-model
#13
Mingliang Sun, Yunfan He, Tao Zhou, Pan Zhang, Jianhua Gao, Feng Lu
Mesenchymal stem cells are an attractive cell type for cytotherapy in wound healing. The authors recently developed a novel, adipose-tissue-derived, injectable extracellular matrix/stromal vascular fraction gel (ECM/SVF-gel) for stem cell therapy. This study was designed to assess the therapeutic effects of ECM/SVF-gel on wound healing and potential mechanisms. ECM/SVF-gel was prepared for use in nude mouse excisional wound healing model. An SVF cell suspension and phosphate-buffered saline injection served as the control...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28816507/arthroscopic-harvest-of-adipose-derived-mesenchymal-stem-cells-from-the-infrapatellar-fat-pad
#14
Jason L Dragoo, Wenteh Chang
BACKGROUND: The successful isolation of adipose-derived mesenchymal stem cells (ADSCs) from the arthroscopically harvested infrapatellar fat pad (IFP) would provide orthopaedic surgeons with an autologous solution for regenerative procedures. PURPOSE: To demonstrate the quantity and viability of the mesenchymal stem cell population arthroscopically harvested from the IFP as well as the surrounding synovium. STUDY DESIGN: Descriptive laboratory study...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28809783/role-of-omentin-vaspin-cardiotrophin-1-tweak-and-nov-ccn3-in-obesity-and-diabetes-development
#15
REVIEW
Xavier Escoté, Saioa Gómez-Zorita, Miguel López-Yoldi, Iñaki Milton-Laskibar, Alfredo Fernández-Quintela, J Alfredo Martínez, María J Moreno-Aliaga, María P Portillo
Adipose tissue releases bioactive mediators called adipokines. This review focuses on the effects of omentin, vaspin, cardiotrophin-1, Tumor necrosis factor-like Weak Inducer of Apoptosis (TWEAK) and nephroblastoma overexpressed (NOV/CCN3) on obesity and diabetes. Omentin is produced by the stromal-vascular fraction of visceral adipose tissue. Obesity reduces omentin serum concentrations and adipose tissue secretion in adults and adolescents. This adipokine regulates insulin sensitivity, but its clinical relevance has to be confirmed...
August 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28801931/immunomodulatory-effects-of-adipose-stromal-vascular-fraction-cells-promote-alternative-activation-macrophages-to-repair-tissue-damage
#16
Annie C Bowles, Rachel M Wise, Brittany Y Gerstein, Robert C Thomas, Roberto Ogelman, Isabella Febbo, Bruce A Bunnell
The pathogenesis of many diseases is driven by the interactions between helper T (TH ) cells and macrophages. The phenotypes of these cells are functional dichotomies that are persuaded according to the surrounding milieu. In both multiple sclerosis and the experimental autoimmune encephalomyelitis (EAE) model, TH 1 and TH 17 cells propagate autoimmune signaling and inflammation in the peripheral lymphoid tissues. In turn, this proinflammatory repertoire promotes the classical activation, formerly the M1-type, macrophages...
August 12, 2017: Stem Cells
https://www.readbyqxmd.com/read/28800775/lack-of-high-bmi-related-features-in-adipocytes-and-inflammatory-cells-in-the-infrapatellar-fat-pad-ifp
#17
Anja J de Jong, Inge R Klein-Wieringa, Stefan N Andersen, Joanneke C Kwekkeboom, Linda Herb-van Toorn, Badelog J E de Lange-Brokaar, Danny van Delft, John Garcia, Wu Wei, Huub J L van der Heide, Yvonne M Bastiaansen-Jenniskens, Gerjo J V M van Osch, Annemarie M Zuurmond, Vedrana Stojanovic-Susulic, Rob G H H Nelissen, René E M Toes, Margreet Kloppenburg, Andreea Ioan-Facsinay
BACKGROUND: Obesity is associated with the development and progression of osteoarthritis (OA). Although the infrapatellar fat pad (IFP) could be involved in this association, due to its intracapsular localization in the knee joint, there is currently little known about the effect of obesity on the IFP. Therefore, we investigated cellular and molecular body mass index (BMI)-related features in the IFP of OA patients. METHODS: Patients with knee OA (N = 155, 68% women, mean age 65 years, mean (SD) BMI 29...
August 11, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28781950/role-of-the-tgf-%C3%AE-pathway-in-dedifferentiation-of-human-mature-adipocytes
#18
Julie Anne Côté, Julie Lessard, Mélissa Pelletier, Simon Marceau, Odette Lescelleur, Julie Fradette, André Tchernof
Dedifferentiation of adipocytes contributes to the generation of a proliferative cell population that could be useful in cellular therapy or tissue engineering. Adipocytes can dedifferentiate into precursor cells to acquire a fibroblast-like phenotype using ceiling culture, in which the buoyancy of fat cells is exploited to allow them to adhere to the inner surface of a container. Ceiling culture is usually performed in flasks, which limits the ability to test various culture conditions. Using a new six-well plate ceiling culture approach, we examined the relevance of TGF-β signaling during dedifferentiation...
August 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28769981/human-suprapatellar-fat-pad-derived-mesenchymal-stem-cells-induce-chondrogenesis-and-cartilage-repair-in-a-model-of-severe-osteoarthritis
#19
Ignacio Muñoz-Criado, Jose Meseguer-Ripolles, Maravillas Mellado-López, Ana Alastrue-Agudo, Richard J Griffeth, Jerónimo Forteza-Vila, Ramón Cugat, Montserrat García, Victoria Moreno-Manzano
Cartilage degeneration is associated with degenerative bone and joint processes in severe osteoarthritis (OA). Spontaneous cartilage regeneration is extremely limited. Often the treatment consists of a partial or complete joint implant. Adipose-derived stem cell (ASC) transplantation has been shown to restore degenerated cartilage; however, regenerative differences of ASC would depend on the source of adipose tissue. The infra- and suprapatellar fat pads surrounding the knee offer a potential autologous source of ASC for patients after complete joint substitution...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28750144/therapy-of-ulcus-cruris-of-venous-and-mixed-venous-arterial-origin-with-autologous-adult-native-progenitor-cells-from-subcutaneous-adipose-tissue-a-prospective-clinical-pilot-study
#20
A Konstantinow, A Arnold, K Djabali, W Kempf, J Gutermuth, T Fischer, T Biedermann
BACKGROUND: The stromal vascular fraction (SVF) of adipose tissue consists of cellular subpopulations with distinct regenerative potential. OBJECTIVE: To investigate the regenerative capacities of autologous SVF cells in the treatment of chronic leg ulcers of venous (VLU) and arterial-venous (AVLU) origin. METHODS: Multimorbid ulcer patients received a singular topical treatment with 9-15x10(6) SVF cells, separated from abdominal lipoaspirates by digestion with collagenase and neutral protease and applied immediately after isolation...
July 27, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
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