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Adipose tissue vascularization

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https://www.readbyqxmd.com/read/28715395/expansion-and-adipogenesis-induction-of-adipocyte-progenitors-from-perivascular-adipose-tissue-isolated-by-magnetic-activated-cell-sorting
#1
Kyan Thelen, Nadia Ayala-Lopez, Stephanie W Watts, G Andres Contreras
Expansion of Perivascular Adipose Tissue (PVAT), a major regulator of vascular function through paracrine signaling, is directly related to the development of hypertension during obesity. The extent of hypertrophy and hyperplasia depends on depot location, sex, and the type of Adipocyte Progenitor Cell (APC) phenotypes present. Techniques used for APC and preadipocytes isolation in the last 10 years have drastically improved the accuracy at which individual cells can be identified based on specific cell surface markers...
June 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28713638/neurovascular-cell-sheet-transplantation-in-a-canine-model-of-intracranial-hemorrhage
#2
Woo-Jin Lee, Jong Young Lee, Keun-Hwa Jung, Soon-Tae Lee, Hyo Yeol Kim, Dong-Kyu Park, Jung-Suk Yu, So-Yun Kim, Daejong Jeon, Manho Kim, Sang Kun Lee, Jae-Kyu Roh, Kon Chu
Cell-based therapy for intracerebral hemorrhage (ICH) has a great therapeutic potential. However, methods to effectively induce direct regeneration of the damaged neural tissue after cell transplantation have not been established, which, if done, would improve the efficacy of cell-based therapy. In this study, we aimed to develop a cell sheet with neurovasculogenic potential and evaluate its usefulness in a canine ICH model. We designed a composite cell sheet made of neural progenitors derived from human olfactory neuroepithelium and vascular progenitors from human adipose tissue-derived stromal cells...
2017: Cell Medicine
https://www.readbyqxmd.com/read/28713076/prospective-relation-of-circulating-adipokines-to-incident-metabolic-syndrome-the-framingham-heart-study
#3
Justin P Zachariah, Rene Quiroz, Kerrie P Nelson, Zhaoyang Teng, John F Keaney, Lisa M Sullivan, Ramachandran S Vasan
BACKGROUND: Adipokines are elaborated by adipose tissue and are associated with glycemic, lipid, and vascular traits. We hypothesized that in a cross-sectional analysis circulating adipokines are altered among subsets of obesity stratified by presence versus absence of metabolic syndrome (MetS) and prospectively predict the incidence of MetS. METHODS AND RESULTS: Participants in the community-based Framingham Third Generation Cohort who attended examination cycle 1 were included in the study (2002-2005; N=3777, mean age, 40 years; 59% women)...
July 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28709820/sex-dependent-difference-in-the-relationship-between-adipose-tissue-cholesterol-efflux-and-estradiol-concentrations-in-young-healthy-humans
#4
REVIEW
Fatima Iqbal, William J Durham, Ayyash Melhem, Saleem Raslan, Tony T Tran, Traver J Wright, Rabia Asghar, Ken Fujise, Elena Volpi, Labros Sidossis, Nicola Abate, Melinda Sheffield-Moore, Demidmaa Tuvdendorj
BACKGROUND: Impaired adipose tissue function and lower levels of high density lipoprotein cholesterol (HDL-C) have been implicated in the development of vascular dementia, and metabolic diseases such as hypertension, atherosclerosis, type 2 diabetes (T2D) and metabolic syndrome. Interestingly, both the substrate fluxes in adipose tissue and HDL-C concentration differ between men and women. Moreover, adipose tissue cholesterol efflux has been implicated in modulation of HDL-C levels. Thus, we aimed to determine if the association between serum estradiol levels and adipose tissue cholesterol efflux is sex-dependent...
July 11, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28707770/comparison-of-the-paracrine-activity-of-mesenchymal-stem-cells-derived-from-human-umbilical-cord-amniotic-membrane-and-adipose-tissue
#5
Filip A Dabrowski, Anna Burdzinska, Agnieszka Kulesza, Anna Sladowska, Aleksandra Zolocinska, Kamila Gala, Leszek Paczek, Miroslaw Wielgos
AIM: The study was conducted to investigate secretory activity and define the paracrine potential of mesenchymal stem cells from human umbilical cord and amniotic membrane (UC-MSCs and AM-MSCs, respectively). METHODS: UC-MSCs (n = 6) were obtained from tissue explants using an adherent method after two weeks of incubation. AM-MSCs (n = 6) were obtained by digestion with tripsin and collagenase. MSC phenotype was confirmed in vitro by performing flow cytometry, differentiation assays and vimentin staining...
July 14, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28704177/morphology-and-contractile-gene-expression-of-adipose-derived-mesenchymal-stem-cells-in-response-to-short-term-cyclic-uniaxial-strain-and-tgf-%C3%AE-1
#6
Neda Rashidi, Mohammad Tafazzoli-Shadpour, Nooshin Haghighipour, Mohammad-Mehdi Khani
Previous studies have shown smooth muscle induction in adipose-derived mesenchymal stem cells (ASCs) caused by long-term cyclic stretch. Here we examined the capability of the short-term straining with time steps of 4, 8, 16 and 24 h alone or combined with TGF-β1 on smooth muscle induction of rabbit ASCs. Alterations in cell morphology were quantified through the cell shape index and orientation angle, and expression levels of α-SMA, SM22-α, h-caldesmon and calponin3 markers were examined using the real-time polymerase chain reaction (PCR) method...
July 12, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28701801/adipose-tissue-formation-utilizing-fat-flap-distraction-technique
#7
Myung Chul Lee, Won Jai Lee, Byung Il Lee, Kee Yang Chung, Jae Woo Kim, Eun Hye Kang, Yong Oock Kim
Co-regulation between adipocytes and supporting vasculature is considered an important process in adipose tissue generation. The objective of this study was to evaluate the mechanical and biological effects of a distraction technique on adipose tissue formation and maintenance. Based on the hypothesis that fat flaps gradually receding from each other can develop an adipose tissue construct, perforated polycarbonate syringe-shaped chambers were implanted in a rabbit model. Latency (1 week) and distraction (3 weeks) periods were followed by a consolidation period in the experimental groups (4, 8, and 12 weeks)...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701474/detecting-human-coronary-inflammation-by-imaging-perivascular-fat
#8
Alexios S Antonopoulos, Fabio Sanna, Nikant Sabharwal, Sheena Thomas, Evangelos K Oikonomou, Laura Herdman, Marios Margaritis, Cheerag Shirodaria, Anna-Maria Kampoli, Ioannis Akoumianakis, Mario Petrou, Rana Sayeed, George Krasopoulos, Constantinos Psarros, Patricia Ciccone, Carl M Brophy, Janet Digby, Andrew Kelion, Raman Uberoi, Suzan Anthony, Nikolaos Alexopoulos, Dimitris Tousoulis, Stephan Achenbach, Stefan Neubauer, Keith M Channon, Charalambos Antoniades
Early detection of vascular inflammation would allow deployment of targeted strategies for the prevention or treatment of multiple disease states. Because vascular inflammation is not detectable with commonly used imaging modalities, we hypothesized that phenotypic changes in perivascular adipose tissue (PVAT) induced by vascular inflammation could be quantified using a new computerized tomography (CT) angiography methodology. We show that inflamed human vessels release cytokines that prevent lipid accumulation in PVAT-derived preadipocytes in vitro, ex vivo, and in vivo...
July 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28697993/dipeptidyl-peptidase-iv-inhibitors-as-novel-regulators-of-vascular-disease
#9
REVIEW
Ioannis Akoumianakis, Charalambos Antoniades
Dipeptidyl peptidase IV (DPP-IV) has been revealed as an adipokine with potential relevance in cardiovascular disease (CVD), while clinically used DPP-IV inhibitors have demonstrated beneficial cardiovascular effects in several experimental studies. Perivascular adipose tissue (PVAT) is a unique adipose tissue depot in close anatomical proximity and bidirectional functional interaction with the vascular wall, which is a source of DPP-IV and its biology may be influenced by DPP-IV inhibition. Recently, DPP-IV inhibition has been associated with decreased local inflammation and oxidative stress both in the vascular wall and the PVAT, potentially regulating atherogenesis progression in vivo...
July 8, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28695799/effect-of-human-hepatocellular-carcinoma-hepg2-cell-derived-exosome-on-the-differentiation-of-mesenchymal-stem-cells-and-their-interaction
#10
Fei Luo, Zhao Sun, Qin Han, Chunling Xue, Chunmei Bai
Objective To investigate the effect of human hepatocellular carcinoma HepG2 cell-derived Exosome on the differentiation of mesenchymal stem cells(MSC)into cancer-associated myofibroblasts(CAF)and the impacts of CAF on liver cancer cell proliferation,migration,and invasion. Methods The protein expression of HepG2 cell-derived Exosome was detected by Western blotting. MSCs were separated from human adipose tissue and cultured with HepG2 cell-derived Exosome(100 ng/nl)to initiate differentiation. The expressions of mesenchymal markers and several interleukins were also detected by Western blotting...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28690531/stem-cells-in-the-treatment-of-refractory-chronic-migraines
#11
Alexander Mauskop, Kenneth O Rothaus
BACKGROUND: Autologous adipose-derived stromal vascular fraction (SVF), which is rich in mesenchymal stromal cells, has been reported to be effective for the treatment of trigeminal neuropathic pain and chronic migraine and tension-type headaches. It is possible that stem cell activity targets neurogenic inflammation, which is a well-documented aspect of migraine pathogenesis. METHODS: Adult patients with severe migraine-related disability as measured by the Migraine Disability Assessment (MIDAS) score who failed botulinum toxin injections and at least 3 prophylactic drugs were included in this study...
May 2017: Case Reports in Neurology
https://www.readbyqxmd.com/read/28689790/cell-therapy-and-scarred-vocal-folds
#12
A Mattei, J Magalon, B Bertrand, C Philandrianos, J Veran, A Giovanni
Vocal fold microstructure is complex and can be affected by laryngeal microsurgery, inducing scarring that prevents mechanical uncoupling of epithelium and muscle, leading to vibration disorder and disabling dysphonia. Treatment options presently are few, and often without efficacy for vibration, having only an impact on volume to reduce glottal closure defect. The present review of the literature had two aims: (i) to report the current state of the literature on cell therapy in vocal fold scarring; and (ii) to analyze the therapeutic interest of the adipose-derived stromal vascular fraction in the existing therapeutic armamentarium...
July 6, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28687961/allogeneic-adipose-derived-mesenchymal-stem-cell-transplantation-enhances-the-expression-of-angiogenic-factors-in-a-mouse-acute-hindlimb-ischemic-model
#13
Ngoc Bich Vu, Ha Thi-Ngan Le, Thuy Thi-Thanh Dao, Lan Thi Phi, Ngoc Kim Phan, Van Thanh Ta
Cell migration and molecular mechanisms during healing of damaged vascular or muscle tissues are emerging fields of interest worldwide. The study herein focuses on evaluating the role of allogenic adipose-derived mesenchymal stem cells (ADMSCs) in restoring damaged tissues. Using a hindlimb ischemic mouse model, ADMSC-mediated induction of cell migration and gene expression related to myocyte regeneration and angiogenesis were evaluated. ADMSCs were labeled with GFP (ADMSC-GFP). The proximal end of the femoral blood vessel of mice (over 6 months of age) are ligated at two positions then cut between the two ties...
July 8, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28687617/proinflammatory-cxcl12-cxcr4-cxcr7-signaling-axis-drives-myc-induced-prostate-cancer-in-obese-mice
#14
Achinto Saha, Songyeon Ahn, Jorge Blando, Fei Su, Mikhail G Kolonin, John DiGiovanni
Obesity is a prognostic risk factor in the progression of prostate cancer (PCa), however, the molecular mechanisms involved are unclear. In this study, we provide preclinical proof of concept for the role of a pro-inflammatory CXCL12-CXCR4/CXCR7 signaling axis in an obesity-driven mouse model of HiMyc prostate cancer. Analysis of the stromal vascular fraction (SVF) from periprostatic white adipose tissue (ppWAT) from obese HiMyc mice at 6 months of age revealed a dramatic increase in mRNAs encoding various chemokines, cytokines, growth factors and angiogenesis mediators, with CXCL12 among the most significantly upregulated genes...
July 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/28683667/early-immunomodulatory-effects-of-implanted-human-perivascular-stromal-cells-during-bone-formation
#15
Carolyn A Meyers, Jiajia Xu, Lei Zhang, Greg Asatrian, Catherine Ding, Noah Yan, Kristen Broderick, Justin Sacks, Raghav Goyal, Xinli Zhang, Kang Ting, Bruno Péault, Chia Soo, Aaron W James
Human perivascular stem/stromal cells (PSC) are a multipotent mesodermal progenitor cell population defined by their perivascular residence. PSC are most commonly derived from subcutaneous adipose tissue, and recent studies have demonstrated the high potential for clinical translation of this fluorescence activated cell sorting (FACS) derived cell population for bone tissue engineering. Specifically, purified PSC induce greater bone formation than unpurified stroma taken from the same patient sample. Here, we examined the differences in early innate immune response to human PSC or unpurified stroma (stromal vascular fraction, SVF) during the in vivo process of bone formation...
July 6, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28676689/eicosapentaenoic-acid-and-5-hepe-enhance-macrophage-mediated-treg-induction-in-mice
#16
Toshiharu Onodera, Atsunori Fukuhara, Jihoon Shin, Tomonori Hayakawa, Michio Otsuki, Iichiro Shimomura
Eicosapentaenoic acid (EPA) is an omega-3 fatty acid with immunomodulatory and anti-inflammatory effects. Beyond its direct effects, the metabolic products of EPA also regulate various immune responses. Animal experiments demonstrated that EPA reduces adipose inflammation in high fat diet-induced obese mouse. However, the effects of EPA on infiltrated immune cell populations in adipose tissue and underlying mechanisms remain to be elucidated. We performed flow cytometry of stromal vascular fraction of epididymal adipose tissues from C57BL/6J and ob/ob mice fed normal chow mixed with or without 5% EPA...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28673775/intramyocardial-bone-marrow-mononuclear-cells-versus-bone-marrow-derived-and-adipose-mesenchymal-cells-in-a-rat-model-of-dilated-cardiomyopathy
#17
M Dolores Carmona, Sagrario Cañadillas, Miguel Romero, Alfonso Blanco, Sonia Nogueras, Concha Herrera
BACKGROUND: Effects of cell therapy on dilated cardiomyopathy (DCM) have been investigated in pre-clinical models using distinct cellular types in each study. A single study that compares the effectiveness of different cells is lacking. METHODS: We have compared the effects of intramyocardial injection (IMI) of bone marrow (BM)-derived mononuclear cells (MNCs), BM and adipose tissue (AT) mesenchymal stromal cells (BM-MSCs and AT-MSCs) on heart function, histological changes and myocardial ultrastructure in a rat model of DCM...
June 30, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28671889/cell-based-soft-tissue-reconstruction-in-a-hydrogel-scaffold
#18
Charles P Blackshear, John S Flacco, Stephanie M Vistnes, Natalie N Chung, Dre Irizarry, Elizabeth A Brett, Derek J Yen, Arash Momeni, Michael T Longaker, Derrick C Wan
BACKGROUND: Renevia is a hyaluronin-gelatin crosslinked matrix scaffold that has been studied as an alternative to adipose transfer in soft tissue reconstruction. It is designed to emulate the native extracellular matrix environment by supporting stromal vascular fraction (SVF) cell attachment, survival, and proliferation, thus promoting cell-based volume restoration. However, the concentration of incorporated cells for a clinically relevant result has yet to be determined. METHODS: Five experimental groups of seven CD-1 nude immunodeficient mice were given 250 μL grafts of the following composition: 1 million human SVF cells per mL of Renevia scaffold, 6 million human SVF cells per mL scaffold, 12 million human SVF cells per mL scaffold, Renevia scaffold-alone or human adipose tissue-alone...
June 1, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28670447/short-term-hypoxic-preconditioning-promotes-prevascularization-in-3d-bioprinted-bone-constructs-with-stromal-vascular-fraction-derived-cells
#19
Mitchell A Kuss, Robert Harms, Shaohua Wu, Ying Wang, Jason B Untrauer, Mark A Carlson, Bin Duan
Reconstruction of complex, craniofacial bone defects often requires autogenous vascularized bone grafts, and still remains a challenge today. In order to address this issue, we isolated the stromal vascular fraction (SVF) from adipose tissues and maintained the phenotypes and the growth of endothelial lineage cells within SVF derived cells (SVFC) by incorporating an endothelial cell medium. We 3D bioprinted SVFC within our hydrogel bioinks and conditioned the constructs in either normoxia or hypoxia. We found that short-term hypoxic conditioning promoted vascularization-related gene expression, whereas long-term hypoxia impaired cell viability and vascularization...
June 5, 2017: RSC Advances
https://www.readbyqxmd.com/read/28670396/effects-of-chemerin-cmklr1-in-obesity-induced-hypertension-and-potential-mechanism
#20
Chunyan Weng, Zhijie Shen, Xiaobo Li, Weihong Jiang, Liping Peng, Hong Yuan, Kan Yang, Jiangang Wang
BACKGROUND: Obesity-induced hypertension (OIH) has a high morbidity and mortality, and its prevention and treatment has been a major challenge in clinical practice. Chemerin is a newly discovered adipokine closely related to OIH. METHODS: Male Wistar rats (8W) were divided into either a high-fat diet or a regular diet group. Body weight and blood pressure were measured every two weeks. After 20 weeks, serum, adipose tissue and aortic arteries were collected. Arterial tensions were detected; Immunohistochemistry, ELISA and Western blotting were used to detect the expression of chemerin, CMKLR1, Rock2 and P-MYPT1 in the aorta and perivascular adipose tissues...
2017: American Journal of Translational Research
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