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Platelet lysate

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https://www.readbyqxmd.com/read/28335043/platelet-derived-no-in-subjects-affected-by-type-2-diabetes-with-and-without-complications-is-there-any-relationship-with-their-offspring
#1
Jacopo Sabbatinelli, Arianna Vignini, Eleonora Salvolini, Laura Nanetti, Laura Mazzanti, Rosa Anna Rabini
Macro- and microvascular complications are currently the principal causes of morbidity and mortality in patients with diabetes mellitus. Aim of this study was to determine if type 2 diabetic patients with nephropathy and coronary artery disease showed altered platelet-derived nitric oxide (NO) production, compared with diabetic subjects without complications, and if this alteration is also present in their diabetic offspring. In this case-control observational study, platelet NO and peroxynitrite content was determined on plasma from 60 male adult type 2 diabetic patients and 60 male offspring type 2 diabetic patients...
March 23, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28326561/hemoxcell-a-new-oxygen-carrier-usable-as-an-additive-for-mesenchymal-stem-cell-culture-in-platelet-lysate-supplemented-media
#2
Fiona Le Pape, Lucie Cosnuau-Kemmat, Gaëlle Richard, Frédéric Dubrana, Claude Férec, Franck Zal, Elisabeth Leize, Pascal Delépine
Human mesenchymal stem cells (MSCs) are promising candidates for therapeutic applications such as tissue engineering. However, one of the main challenges is to improve oxygen supply to hypoxic areas to reduce oxygen gradient formation while preserving MSC differentiation potential and viability. For this purpose, a marine hemoglobin, HEMOXCell, was evaluated as an oxygen carrier for culturing human bone marrow MSCs in vitro for future three-dimensional culture applications. Impact of HEMOXCell on cell growth and viability was assessed in human platelet lysate (hPL)-supplemented media...
March 22, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28297568/safety-studies-for-use-of-adipose-tissue-derived-mesenchymal-stromal-stem-cells-in-a-rabbit-model-for-osteoarthritis-to-support-a-phase-i-clinical-trial
#3
Scott M Riester, Janet M Denbeigh, Yang Lin, Dakota L Jones, Tristan de Mooij, Eric A Lewallen, Hai Nie, Christopher R Paradise, Darcie J Radel, Amel Dudakovic, Emily T Camilleri, Dirk R Larson, Wenchun Qu, Aaron J Krych, Matthew A Frick, Hee-Jeong Im, Allan B Dietz, Jay Smith, Andre J van Wijnen
Adipose-derived mesenchymal stem cells (AMSCs) offer potential as a therapeutic option for clinical applications in musculoskeletal regenerative medicine because of their immunomodulatory functions and capacity for trilineage differentiation. In preparation for a phase I clinical trial using AMSCs to treat patients with osteoarthritis, we carried out preclinical studies to assess the safety of human AMSCs within the intra-articular joint space. Culture-expanded human AMSCs grown in human platelet-lysate were delivered via intra-articular injections into normal healthy rabbit knees and knees at risk for the development of osteoarthritis after bilateral medial anterior hemimeniscectomy...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28287856/enzymatic-kinetics-regarding-reversible-metabolism-of-cs-0777-a-sphingosine-1-phosphate-receptor-modulator-via-phosphorylation-and-dephosphorylation-in-humans
#4
Shin-Ichi Inaba, Maki Yamaguchi-Goto, Kaoru Tanaka-Takanaka, Kiyoaki Yonesu, Hidetaka Sakurai, Kazuishi Kubota, Takashi Izumi
1. CS-0777, a candidate compound for autoimmune diseases, becomes phosphorylated active metabolite, M1, by fructosamine 3-kinase (FN3K), FN3K-related protein (FN3K-RP); and M1 reverted back to CS-0777 by alkaline phosphatase (ALP) in the body. We performed enzyme kinetic analysis of phosphorylation of CS-0777 by FN3K, FN3K-RP, human erythrocytes and human platelets; and dephosphorylation of M1 by various ALP isozymes and human liver, kidney, lung and small intestine microsomes. 2. The Michaelis constants of human FN3K, FN3K-RP, and erythrocytes for CS-0777 phosphorylation were in the range from 498 μM to 1060 μM...
March 13, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28269764/targeted-metabolomic-analysis-of-soluble-lysates-from-platelets-of-patients-with-mild-cognitive-impairment-and-alzheimer-s-disease-compared-to-healthy-controls-is-pc-aec40-4-a-promising-diagnostic-tool
#5
Herbert Oberacher, Kathrin Arnhard, Caroline Linhart, Angela Diwo, Josef Marksteiner, Christian Humpel
Alzheimer's disease (AD) is a progressive neurodegenerative disorder of the central nervous system. The use of biological fluids in AD diagnosis remains limited to the analysis of specific protein biomarkers in cerebrospinal fluid. However, metabolomic analysis has recently revealed several metabolites in plasma, especially phosphatidylcholines (PC), as putative biomarkers specific for AD. Following on previous reports of platelet abnormalities in AD, we hypothesized that platelets metabolites released in plasma may offer new biomarkers in AD...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28245527/isolation-of-mesenchymal-stromal-cells-from-peripheral-blood-of-st-elevation-myocardial-infarction-patients
#6
Ina Laura Pieper, Rachel Smith, Joanna C Bishop, Omar Aldalati, Alex J Chase, Gareth Morgan, Catherine A Thornton
Bone marrow mesenchymal stromal cells (MSCs) have shown therapeutic potential in the treatment of myocardial infarction patients. However, bone marrow requires invasive harvesting techniques. Therefore, the aim was to carry out a feasibility study of using autologous peripheral blood (PB) as a source for MSCs and platelet lysate (PL), a potential novel therapeutic intervention in acute ST elevation myocardial infarction (STEMI) patients. Autologous PL and MSCs were prepared from STEMI patient and healthy control blood...
February 28, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28239987/effects-of-alloantibodies-to-human-leukocyte-antigen-on-endothelial-expression-and-serum-levels-of-thrombomodulin
#7
S Béland, P Vallin, O Désy, E Lévesque, S A De Serres
Essentials The effect of alloantibodies on the endothelial expression of thrombomodulin is unknown. Thrombomodulin was quantified in stimulated endothelial cells and measured in serum samples. Anti-human leukocyte antigen (HLA) I vs. II antibodies have different effects on thrombomodulin. Anti-HLA II antibodies may promote a prothrombotic state and contribute to microangiopathy. SUMMARY: Rationale Thrombomodulin (TBM) is an anticoagulant and anti-inflammatory transmembrane protein expressed on endothelial cells...
February 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28229411/therapeutic-application-of-human-wharton-jelly-mesenchymal-stem-cells-in-skin-injury-of-scid
#8
Vikram Sabapathy, Balasubramanian Sundaram, Sanjay Kumar
Mesenchymal stem cells (MSCs) are blossoming as a credible source for regenerative medical applications. The use of fetal MSCs is gaining momentum for therapeutic use. The ease of isolation, enhanced characteristics, and immunomodulation properties renders the utilization of fetal MSCs for numerous clinical applications. In this article, we will demonstrate a step-by-step protocol for isolation of Wharton's jelly MSCs (WJMSCs) from the human umbilical cord matrix, preparation of human platelet lysate, fabricating amniotic membrane scaffold and mice model to study skin regeneration using a combination of MSCs and decellularized amniotic membrane scaffold...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28215928/human-platelet-lysate-is-a-successful-alternative-serum-supplement-for-propagation-of-monocyte-derived-dendritic-cells
#9
Urban Švajger
BACKGROUND AIMS: Clinical protocols for dendritic cell (DC) generation from monocytes require the use of animal serum-free supplements. Serum-free media can also require up to 1% of serum supplementation. In addition, recommendations based on the 3Rs (Refinement, Reduction, Replacement) principle also recommend the use of non-animal sera in in vitro studies. The aim of this study was to explore the potential use of platelet lysate (PL) for generation of optimally differentiated DCs from monocytes...
February 16, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28188071/a-good-manufacturing-practice-grade-standard-protocol-for-exclusively-human-mesenchymal-stromal-cell-derived-extracellular-vesicles
#10
Karin Pachler, Thomas Lener, Doris Streif, Zsuzsanna A Dunai, Alexandre Desgeorges, Martina Feichtner, Michaela Öller, Katharina Schallmoser, Eva Rohde, Mario Gimona
BACKGROUND AIMS: Extracellular vesicles (EVs) released by mesenchymal stromal cells (MSCs) may contribute to biological processes such as tissue regeneration, immunomodulation and neuroprotection. Evaluation of their therapeutic potential and application in future clinical trials demands thorough characterization of EV content and production under defined medium conditions, devoid of xenogenic substances and serum-derived vesicles. Addressing the apparent need for such a growth medium, we have developed a medium formulation based on pooled human platelet lysate (pHPL), free from animal-derived xenogenic additives and depleted of EVs...
February 7, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28182293/standardizing-the-freeze-thaw-preparation-of-growth-factors-from-platelet-lysate
#11
Gabriel Strandberg, Felix Sellberg, Pehr Sommar, Martin Ronaghi, Norbert Lubenow, Folke Knutson, David Berglund
BACKGROUND: Over the past decades, the focus on the regenerative properties of platelets (PLTs) has intensified and many PLT-derived growth factors are readily used in medical settings. A general lack of standardization in the preparation of these growth factors remains, however, and this study therefore examines the dynamics of growth factors throughout the freeze-thaw procedure. STUDY DESIGN AND METHODS: Plateletpheresis (PA) and PLT-poor plasma (PPP) samples were collected from 10 healthy donors...
February 9, 2017: Transfusion
https://www.readbyqxmd.com/read/28164173/tgf-%C3%AE-1-along-with-other-platelet-contents-augments-treg-cells-to-suppress-anti-fviii-immune-responses-in-hemophilia-a-mice
#12
Dipica Haribhai, Xiaofeng Luo, Juan Chen, Shuang Jia, Linzheng Shi, Jocelyn A Schroeder, Hartmut Weiler, Richard H Aster, Martin J Hessner, Jianda Hu, Calvin B Williams, Qizhen Shi
Platelets are a rich source of many cytokines and chemokines including transforming growth factor β 1 (TGF-β1). TGF-β1 is required to convert conventional CD4(+) T (Tconv) cells into induced regulatory T (iTreg) cells that express the transcription factor Foxp3. Whether platelet contents will affect Treg cell properties has not been explored. In this study, we show that unfractionated platelet lysates (pltLys) containing TGF-β1 efficiently induced Foxp3 expression in Tconv cells. The common Treg cell surface phenotype and in vitro suppressive activity of unfractionated pltLys-iTreg cells were similar to those of iTreg cells generated using purified TGF-β1 (purTGFβ-iTreg) cells...
December 13, 2016: Blood Adv
https://www.readbyqxmd.com/read/28152010/comparison-of-corneal-epitheliotrophic-capacities-among-human-platelet-lysates-and-other-blood-derivatives
#13
Chien-Jung Huang, Yi-Chen Sun, Karen Christopher, Amy Shih-I Pai, Chia-Ju Lu, Fung-Rong Hu, Szu-Yuan Lin, Wei-Li Chen
PURPOSE: To evaluate the corneal epitheliotropic abilities of two commercialized human platelet lysates (HPLs) and to compare the results with other blood derivatives, including human peripheral serum (HPS) and bovine fetal serum (FBS). METHODS: In vitro, human corneal epithelial cells were incubated in various concentrations (0%, 3%, 5% and 10%) of blood derivatives. Two commercialized HPLs, including UltraGRO TM (Helios, Atlanta, GA) and PLTMax (Mill Creek, Rochester, MI), were tested and compared with HPS and FBS...
2017: PloS One
https://www.readbyqxmd.com/read/28114800/pre-treatment-of-human-mesenchymal-stem-cells-with-inflammatory-factors-or-hypoxia-does-not-influence-migration-to-osteoarthritic-cartilage-and-synovium
#14
Maarten J C Leijs, Gerben M van Buul, Jan A N Verhaar, Martin J Hoogduijn, Pieter K Bos, Gerjo J V M van Osch
BACKGROUND: Mesenchymal stem cells (MSCs) are promising candidates as a cell-based therapy for osteoarthritis (OA), although current results are modest. Pre-treatment of MSCs before application might improve their therapeutic efficacy. HYPOTHESIS: Pre-treatment of MSCs with inflammatory factors or hypoxia will improve their migration and adhesion capacities toward OA-affected tissues. STUDY DESIGN: Controlled laboratory study. METHODS: We used real-time polymerase chain reaction to determine the effects of different fetal calf serum (FCS) batches, platelet lysate (PL), hypoxia, inflammatory factors, factors secreted by OA tissues, and OA synovial fluid (SF) on the expression of 12 genes encoding chemokine or adhesion receptors...
January 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28024508/-reconstruction-of-humanized-bone-marrow-niche-in-immunodeficiency-mouse
#15
Huan Chen, Zheng Tian, Bin Li, Hai-Yan Xing, Huan Li, Ke-Jing Tang, Min Wang, Qing Rao
OBJECTIVE: To reconstruct a human bone marrow niche in immunodeficiency mouse (NOD/SCID) so as to provide a model for observing the effect of abnormal BM niche on the occurence and development of leukemia. METHODS: Human platelet lysate(HPL) was obtained by repeated freezing and thawing of concentrated platelet. Bone marrow-derived mesenchymal stem cells were cultured in α-minimal essential medium (α-MEM) containing 10% HPL or 10% FBS. The morphology, cell phenotype, multilineage differentiation potential in vitro and proliferation capacity between the mesenchymal stem cells cultured with HPL or FBS were compared...
December 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28013442/dmso-free-cryopreservation-of-adipose-derived-mesenchymal-stromal-cells-expansion-medium-affects-post-thaw-survival
#16
Olena Rogulska, Yuri Petrenko, Alexander Petrenko
Off-the-shelf availability of human adipose-derived mesenchymal stromal cells (ASCs) for regenerative medicine application requires the development of nontoxic, safe, and efficient protocols for cryopreservation. Favorably, such cell processing protocols should not contain xenogeneic or toxic components, such as fetal bovine serum (FS) and dimethyl sulfoxide (DMSO). The objective of the study was to assess the sensitivity of ASCs to DMSO-free cryopreservation protocol depending on their expansion conditions: conventional, based on the application of FS or xeno-free, using PL as a medium supplement...
December 24, 2016: Cytotechnology
https://www.readbyqxmd.com/read/27968851/development-of-the-novel-antiplatelet-agent-adtm-originating-from-traditional-chinese-medicine-a-chemical-proteomic-analysis-and-in-vivo-assessment-of-efficacy-in-an-animal-model
#17
Guozhen Cui, Angela Wa Ho, Simon Ming Yuen Lee, Yuqiang Wang, Maggie Pui Man Hoi
BACKGROUND: An ageing population and lifestyle changes have led to increased cardiovascular disease-related morbidity and mortality in China, where an estimated 230 million people have cardiovascular disease. Long-term antiplatelet therapy with aspirin and clopidogrel are used for treatment and post-stenting primary prevention of acute coronary syndrome, but the risk of bleeding complications is high. This study aimed to identify the target of the newly developed antiplatelet agent ADTM, originating from traditional Chinese herbs...
October 2016: Lancet
https://www.readbyqxmd.com/read/27958222/effects-of-ginseng-fruit-saponins-on-serotonin-system-in-sprague-dawley-rats-with-myocardial-infarction-depression-and-myocardial-infarction-complicated-with-depression
#18
Dong-Fang He, Yan-Ping Ren, Mei-Yan Liu
BACKGROUND: Our previous studies have demonstrated that the levels of 5-hydroxytryptamine (5-HT) and 5-HT 2A receptor (5-HT2AR) in serum and platelet were associated with depression and myocardial infarction (MI), and pretreatment with ginseng fruit saponins (GFS) before MI and depression had an effect on the 5-HT system. In this study, the effects of GFS on the 5-HT system in the Sprague-Dawley (SD) rats with MI, depression, and MI + depression were evaluated. METHODS: A total of eighty SD rats were allocated to four groups: MI, depression, MI + depression, and control groups (n = 20 in each group)...
December 20, 2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27943660/clinical-scale-expansion-of-adipose-derived-stromal-cells-starting-from-stromal-vascular-fraction-in-a-single-use-bioreactor-proof-of-concept-for-autologous-applications
#19
Mélanie Gadelorge, Marion Bourdens, Nicolas Espagnolle, Clémence Bardiaux, Julie Murrell, Lenaig Savary, Sylvain Ribaud, Benoît Chaput, Luc Sensebe
Adipose derived stromal cells (ASC) are adult multipotent cells increasingly used for cell therapy due to their differentiation potential, their paracrine effect and their convenience. ASC are currently selected from stromal vascular fraction (SVF) of adipose tissue and expanded in 2D flasks following Good Manufacturing Practices. This process is limited in surface area, labor-intensive and expensive, especially for autologous applications requiring selection and expansion steps for every patient. Closed and automated bioreactors offer an alternative for scalable and cost-effective production of ASCs...
December 11, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27943621/the-protective-effect-of-human-platelet-lysate-in-models-of-neurodegenerative-disease-involvement-of-the-akt-and-mek-pathways
#20
Flore Gouel, Bruce Do Van, Ming-Li Chou, Aurélie Jonneaux, Caroline Moreau, Régis Bordet, Thierry Burnouf, Jean-Christophe Devedjian, David Devos
Neurodegenerative diseases have huge economic and societal impacts, and place an immense emotional burden on patients and caregivers. Given that platelets have an essential physiological role in wound healing and tissue repair, human platelet lysates (HPLs) are being developed as a novel, effective biotherapy for neurodegenerative diseases. HPLs constitute abundant, readily accessible sources of physiological mixtures of many growth factors (GFs), with demonstrable effects on neuron survival and thus the development, maintenance, function and plasticity of the vertebrate nervous system...
December 12, 2016: Journal of Tissue Engineering and Regenerative Medicine
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