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https://www.readbyqxmd.com/read/29606041/safe-maximal-resection-of-primary-cavernous-sinus-meningiomas-via-a-minimal-anterior-and-posterior-combined-transpetrosal-approach
#1
Hiroki Morisako, Takeo Goto, Hiroki Ohata, Sachin Ranganatha Goudihalli, Keisuke Shirosaka, Kenji Ohata
OBJECTIVE Meningiomas arising from the cavernous sinus (CS) continue to be a significant technical challenge, and resection continues to carry a relatively higher risk of neurological morbidity in patients with these lesions because of the tumor's proximity to neurovascular structures. The authors report the surgical outcomes of 9 patients with primary CS meningiomas (CSMs) that were surgically treated using a minimal anterior and posterior combined (MAPC) transpetrosal approach, and they emphasize the usefulness of the approach...
April 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29548333/therapeutic-time-window-of-multipotent-adult-progenitor-therapy-after-traumatic-brain-injury
#2
Supinder S Bedi, Benjamin M Aertker, George P Liao, Henry W Caplan, Deepa Bhattarai, Fanni Mandy, Franciska Mandy, Luis G Fernandez, Pamela Zelnick, Matthew B Mitchell, Walter Schiffer, Margaret Johnson, Emma Denson, Karthik Prabhakara, Hasen Xue, Philippa Smith, Karen Uray, Scott D Olson, Robert W Mays, Charles S Cox
BACKGROUND: Traumatic brain injury (TBI) is a major cause of death and disability. TBI results in a prolonged secondary central neuro-inflammatory response. Previously, we have demonstrated that multiple doses (2 and 24 h after TBI) of multipotent adult progenitor cells (MAPC) delivered intravenously preserve the blood-brain barrier (BBB), improve spatial learning, and decrease activated microglia/macrophages in the dentate gyrus of the hippocampus. In order to determine if there is an optimum treatment window to preserve the BBB, improve cognitive behavior, and attenuate the activated microglia/macrophages, we administered MAPC at various clinically relevant intervals...
March 16, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29497054/multipotent-adult-progenitor-cells-support-lymphatic-regeneration-at-multiple-anatomical-levels-during-wound-healing-and-lymphedema
#3
Manu Beerens, Xabier L Aranguren, Benoit Hendrickx, Wouter Dheedene, Tom Dresselaers, Uwe Himmelreich, Catherine Verfaillie, Aernout Luttun
Lymphatic capillary growth is an integral part of wound healing, yet, the combined effectiveness of stem/progenitor cells on lymphatic and blood vascular regeneration in wounds needs further exploration. Stem/progenitor cell transplantation also emerged as an approach to cure lymphedema, a condition caused by lymphatic system deficiency. While lymphedema treatment requires lymphatic system restoration from the capillary to the collector level, it remains undetermined whether stem/progenitor cells support a complex regenerative response across the entire anatomical spectrum of the system...
March 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29404254/contralateral-minimum-anterior-and-posterior-combined-petrosal-approach-for-retrochiasmatic-craniopharyngiomas-an-alternative-technique
#4
Sachin Ranganatha Goudihalli, Hiroki Morisako, Wimba Prastarana, Takeo Goto, Hiroki Ohata, Kenji Ohata
Retrochiasmatic craniopharyngiomas (RC) are a challenge for the neurosurgeon to treat surgically, restrained by their location in the interpeduncular fossa, surrounded by vital neurovascular structures, narrow corridor and poor visibility. Many approaches are possible and elucidated in the literature, which the surgeon chooses, based on multiple factors, such as the size of tumor, calcification, laterality, preoperative neurological deficits and the endocrine function status, recurrence, postradiotherapy status, or significant superior and/or posterior extension...
February 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28841904/a-comparison-of-radiographic-and-clinical-outcomes-of-anterior-lumbar-interbody-fusion-performed-with-either-a-cellular-bone-allograft-containing-multipotent-adult-progenitor-cells-or-recombinant-human-bone-morphogenetic-protein-2
#5
Daniel Dongwhan Lee, John Yongmin Kim
BACKGROUND: Both the map3 Cellular Allogeneic Bone Graft® and recombinant human bone morphogenetic protein 2 (rhBMP-2, Infuse®) were developed to provide an alternative to iliac crest autograft, thus eliminating the morbidity associated with its harvest. The recent literature concerning adverse events associated with the use of rhBMP-2, however, highlights the need for a safe and effective alternative. The multipotent adult progenitor cells (MAPC) found in map3 allograft may provide this alternative...
August 25, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28676074/immunoregulatory-effects-of-multipotent-adult-progenitor-cells-in-a-porcine-ex-vivo-lung-perfusion-model
#6
An Martens, Sofie Ordies, Bart M Vanaudenaerde, Stijn E Verleden, Robin Vos, Dirk E Van Raemdonck, Geert M Verleden, Valerie D Roobrouck, Sandra Claes, Dominique Schols, Eric Verbeken, Catherine M Verfaillie, Arne P Neyrinck
BACKGROUND: Primary graft dysfunction (PGD) is considered to be the end result of an inflammatory response targeting the new lung allograft after transplant. Previous research has indicated that MAPC cell therapy might attenuate this injury by its paracrine effects on the pro-/anti-inflammatory balance. This study aims to investigate the immunoregulatory capacities of MAPC cells in PGD when administered in the airways. METHODS: Lungs of domestic pigs (n = 6/group) were subjected to 90 minutes of warm ischemia...
July 5, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28621170/therapeutic-efficacy-of-multipotent-adult-progenitor-cells-versus-mesenchymal-stem-cells-in-experimental-autoimmune-encephalomyelitis
#7
Saurabh Pratap Singh, Sachin Hanumantrao Jadhav, Chandra Prakash Chaturvedi, Soniya Nityanand
AIM: In this study, we have evaluated the therapeutic efficacy of mouse multipotent adult progenitor cells (mMAPCs) in experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis, and compared it with mouse mesenchymal stem cells (mMSCs). MATERIALS & METHODS: We administered PKH26-labeled mMAPC and mMSC into EAE mice and evaluated their therapeutic efficacy. RESULTS: The mMAPC-treated mice in comparison with the mMSC group exhibited a higher suppression of EAE (p < 0...
June 16, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28499585/multipotent-adult-progenitor-cells-improve-the-hematopoietic-function-in-myelodysplasia
#8
Valerie D Roobrouck, Esther Wolfs, Michel Delforge, Dorien Broekaert, Soumen Chakraborty, Kathleen Sels, Thomas Vanwelden, Bryan Holvoet, Larissa Lhoest, Satish Khurana, Shubham Pandey, Chloé Hoornaert, Peter Ponsaerts, Tom Struys, Nancy Boeckx, Peter Vandenberghe, Christophe M Deroose, Catherine M Verfaillie
BACKGROUND AIMS: Myelodysplastic syndromes (MDS) are a group of clonal stem cell disorders affecting the normal hematopoietic differentiation process and leading to abnormal maturation and differentiation of all blood cell lineages. Treatment options are limited, and there is an unmet medical need for effective therapies for patients with severe cytopenias. METHODS: We demonstrate that multipotent adult progenitor cells (MAPC) improve the function of hematopoietic progenitors derived from human MDS bone marrow (BM) by significantly increasing the frequency of primitive progenitors as well as the number of myeloid colonies...
June 2017: Cytotherapy
https://www.readbyqxmd.com/read/28459743/the-use-of-gmp-produced-bone-marrow-derived-stem-cells-in-combination-with-extracorporeal-membrane-oxygenation-in-ards-an-animal-model
#9
Ergin Kocyildirim, Nayra Cárdenes, Antony Ting, Eder Cáceres, Christian BermUdez, Mauricio Rojas
Acute respiratory distress syndrome (ARDS) is the result of a wide variety of disorders, which can be associated with different clinical disorders or systemic diseases directly affecting the lungs. Currently, the only existing therapy is limited to supportive care. In a 6 hour pilot study, we analyzed the use of the combination of both stem cell and extracorporeal membrane oxygenation (ECMO) strategies to prevent or treat severe lung injury. A total of 11 sheep were used. Five sheep received Escherichia coli endotoxin as a control group (group 1)...
May 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28263009/multipotent-adult-progenitor-cells-enhance-recovery-after-stroke-by-modulating-the-immune-response-from-the-spleen
#10
Bing Yang, Jason A Hamilton, Krystal S Valenzuela, Annelies Bogaerts, XiaoPei Xi, Jaroslaw Aronowski, Robert W Mays, Sean I Savitz
Stem cell therapy modulates not only the local microenvironment of the brain but also the systemic immune responses. We explored the impact of human multipotent adult progenitor cells (MAPC) modulating splenic activation and peripheral immune responses after ischemic stroke. Hundred twenty-six Long-Evans adult male rats underwent middle cerebral artery occlusion. Twenty-four hours later, they received IV MAPC or saline treatment. At 3 days after infusion, RNA was isolated from the injured cortex and spleen for microarray analysis...
March 6, 2017: Stem Cells
https://www.readbyqxmd.com/read/28261818/on-the-impact-of-smoothing-and-noise-on-robustness-of-ct-and-cbct-radiomics-features-for-patients-with-head-and-neck-cancers
#11
Hassan Bagher-Ebadian, Farzan Siddiqui, Chang Liu, Benjamin Movsas, Indrin J Chetty
PURPOSE: We investigated the characteristics of radiomics features extracted from planning CT (pCT) and cone beam CT (CBCT) image datasets acquired for 18 oropharyngeal cancer patients treated with fractionated radiation therapy. Images were subjected to smoothing, sharpening, and noise to evaluate changes in features relative to baseline datasets. METHODS: Textural features were extracted from tumor volumes, contoured on pCT and CBCT images, according to the following eight different classes: intensity based histogram features (IBHF), gray level run length (GLRL), law's textural information (LAWS), discrete orthonormal stockwell transform (DOST), local binary pattern (LBP), two-dimensional wavelet transform (2DWT), Two dimensional Gabor filter (2DGF), and gray level co-occurrence matrix (GLCM)...
May 2017: Medical Physics
https://www.readbyqxmd.com/read/28068055/development-of-advanced-dressings-for-the-delivery-of-progenitor-cells
#12
Giles T S Kirby, Stuart J Mills, Liesbeth Vandenpoel, Jef Pinxteren, Anthony Ting, Robert D Short, Allison J Cowin, Andrew Michelmore, Louise E Smith
Culture surfaces that substantially reduce the degree of cell manipulation in the delivery of cell sheets to patients are described. These surfaces support the attachment, culture, and delivery of multipotent adult progenitor cells (MAPC). It was essential that the processes of attachment/detachment to the surface did not affect cell phenotype nor the function of the cultured cells. Both acid-based and amine-based surface coatings were generated from acrylic acid, propanoic acid, diaminopropane, and heptylamine precursors, respectively...
February 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27890596/monoacyl-phosphatidylcholine-inhibits-the-formation-of-lipid-multilamellar-structures-during-in-vitro-lipolysis-of-self-emulsifying-drug-delivery-systems
#13
Thuy Tran, Scheyla D V S Siqueira, Heinz Amenitsch, Thomas Rades, Anette Müllertz
The colloidal structures formed during lipolysis of self-emulsifying drug delivery systems (SEDDS) might affect the solubilisation and possibly the absorption of drugs. The aim of the current study is to elucidate the structures formed during the in vitro lipolysis of four SEDDS containing medium-chain glycerides and caprylocaproyl polyoxyl-8 glycerides (Labrasol), with or without monoacyl phosphatidylcholine (MAPC). In situ synchrotron small-angle X-ray scattering (SAXS) was combined with ex situ cryogenic transmission electron microscopy (cryo-TEM) and dynamic light scattering (DLS) to elucidate the generated structures...
November 24, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27704164/human-multipotent-adult-progenitor-cells-enhance-islet-function-and-revascularisation-when-co-transplanted-as-a-composite-pellet-in-a-mouse-model-of-diabetes
#14
João Paulo M C M Cunha, Gunter Leuckx, Peter Sterkendries, Hannelie Korf, Gabriela Bomfim-Ferreira, Lutgart Overbergh, Bart Vaes, Harry Heimberg, Conny Gysemans, Chantal Mathieu
AIMS/HYPOTHESIS: Hypoxia in the initial days after islet transplantation leads to considerable loss of islet mass and contributes to disappointing outcomes in the clinical setting. The aim of the present study was to investigate whether co-transplantation of human non-endothelial bone marrow-derived multipotent adult progenitor cells (MAPCs), which are non-immunogenic and can secrete angiogenic growth factors during the initial days after implantation, could improve islet engraftment and survival...
January 2017: Diabetologia
https://www.readbyqxmd.com/read/27465071/clinical-grade-human-multipotent-adult-progenitor-cells-block-cd8-cytotoxic-t-lymphocytes
#15
Jeroen Plessers, Emily Dekimpe, Matthias Van Woensel, Valerie D Roobrouck, Dominique M Bullens, Jef Pinxteren, Catherine M Verfaillie, Stefaan W Van Gool
: MultiStem cells are clinical-grade multipotent adult bone marrow-derived progenitor cells (MAPCs), with extensive replication potential and broader differentiation capacity compared with mesenchymal stem cells. Human MAPCs suppress T-cell proliferation induced by alloantigens and mutually interact with allogeneic natural killer cells. In this study, the interaction between MultiStem and CD8+ cytotoxic T lymphocytes (CTLs) was addressed for the first time. In an in vitro setting, the immunogenicity of MultiStem, the susceptibility of MultiStem toward CTL-mediated lysis, and its effects on CTL function were investigated...
December 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27424992/bone-marrow-cells-differentiation-into-organ-cells-using-stem-cell-therapy
#16
REVIEW
Y-J Yang, X-L Li, Y Xue, C-X Zhang, Y Wang, X Hu, Q Dai
Bone marrow cells (BMC) are progenitors of bone, cartilage, skeletal tissue, the hematopoiesis-supporting stroma and adipocyte cells. BMCs have the potential to differentiate into neural cells, cardiac myocytes, liver hepatocytes, chondrocytes, renal, corneal, blood, and myogenic cells. The bone marrow cell cultures from stromal and mesenchymal cells are called multipotent adult progenitor cells (MAPCs). MAPCs can differentiate into mesenchymal cells, visceral mesoderm, neuroectoderm and endoderm in vitro. It has been shown that the stem cells derived from bone marrow cells (BMCs) can regenerate cardiac myocytes after myocardial infarction (MI)...
July 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27239552/osteogenic-potential-of-multipotent-adult-progenitor-cells-for-calvaria-bone-regeneration
#17
Dong Joon Lee, Yonsil Park, Wei-Shou Hu, Ching-Chang Ko
Osteogenic cells derived from rat multipotent adult progenitor cells (rMAPCs) were investigated for their potential use in bone regeneration. rMAPCs are adult stem cells derived from bone marrow that have a high proliferation capacity and the differentiation potential to multiple lineages. They may also offer immunomodulatory properties favorable for applications for regenerative medicine. rMAPCs were cultivated as single cells or as 3D aggregates in osteogenic media for up to 38 days, and their differentiation to bone lineage was then assessed by immunostaining of osteocalcin and collagen type I and by mineralization assays...
2016: Advances in Medicine
https://www.readbyqxmd.com/read/27075768/using-mirna-mrna-interaction-analysis-to-link-biologically-relevant-mirnas-to-stem-cell-identity-testing-for-next-generation-culturing-development
#18
Marian A E Crabbé, Kristel Gijbels, Aline Visser, David Craeye, Sara Walbers, Jef Pinxteren, Robert J Deans, Wim Annaert, Bart L T Vaes
UNLABELLED: Therapeutic benefit of stem cells has been demonstrated in multiple disease models and clinical trials. Robust quality assurance is imperative to make advancements in culturing procedures to enable large-scale cell manufacturing without hampering therapeutic potency. MicroRNAs (miRNAs or miRs) are shown to be master regulators of biological processes and are potentially ideal quality markers. We determined miRNA markers differentially expressed under nonclinical multipotent adult progenitor cell (MAPC) and mesenchymal stem cell (MSC) culturing conditions that regulate important stem cell features, such as proliferation and differentiation...
June 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27036558/assessment-of-metal-artifact-reduction-methods-in-pelvic-ct
#19
Mehrsima Abdoli, Abolfazl Mehranian, Angeliki Ailianou, Minerva Becker, Habib Zaidi
PURPOSE: Metal artifact reduction (MAR) produces images with improved quality potentially leading to confident and reliable clinical diagnosis and therapy planning. In this work, the authors evaluate the performance of five MAR techniques for the assessment of computed tomography images of patients with hip prostheses. METHODS: Five MAR algorithms were evaluated using simulation and clinical studies. The algorithms included one-dimensional linear interpolation (LI) of the corrupted projection bins in the sinogram, two-dimensional interpolation (2D), a normalized metal artifact reduction (NMAR) technique, a metal deletion technique, and a maximum a posteriori completion (MAPC) approach...
April 2016: Medical Physics
https://www.readbyqxmd.com/read/27025689/development-of-a-functional-biomarker-for-use-in-cell-based-therapy-studies-in-seropositive-rheumatoid-arthritis
#20
Gali Shalev-Malul, David C Soler, Anthony E Ting, Nicholas A Lehman, Emma Barnboym, Thomas S McCormick, Donald D Anthony, Hillard M Lazarus, Arnold I Caplan, Maya Breitman, Nora G Singer
UNLABELLED: Cell-based therapy has potential therapeutic value in autoimmune diseases such as rheumatoid arthritis (RA). In RA, reduction of disease activity has been associated with improvement in the function of regulatory T cells (Treg) and attenuated responses of proinflammatory effector T cells (Teff). Mesenchymal stem cells (MSCs) and related multipotent adult progenitor cells (MAPC) have strong anti-inflammatory and immunomodulatory properties and may be able to "reset" the immune system to a pre-RA state...
May 2016: Stem Cells Translational Medicine
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