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Marrow morphology

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https://www.readbyqxmd.com/read/28070554/marrow-inspired-matrix-cues-rapidly-affect-early-fate-decisions-of-hematopoietic-stem-and-progenitor-cells
#1
Ji Sun Choi, Brendan A C Harley
Hematopoiesis is the physiological process where hematopoietic stem cells (HSCs) continuously generate the body's complement of blood and immune cells within unique regions of the bone marrow termed niches. Although previous investigations have revealed gradients in cellular and extracellular matrix (ECM) content across the marrow, and matrix elasticity and ligand type are believed to be strong regulators of stem cell fate, the impact of biophysical signals on HSC response is poorly understood. Using marrow-inspired ECM ligand-coated polyacrylamide substrates that present defined stiffness and matrix ligand cues, we demonstrate that the interplay between integrin engagement and myosin II activation processes affects the morphology, proliferation, and myeloid lineage specification of primary murine HSCs within 24 hours ex vivo...
January 2017: Science Advances
https://www.readbyqxmd.com/read/28070473/renal-infiltration-by-diffuse-large-b-cell-lymphoma-as-a-rare-cause-of-fanconi-s-syndrome-a-case-report
#2
Shoab Saadat, Syed Nayer Mahmud, Asim Qureshi
We report the case of a 16-year-old female patient with a known history of coeliac disease, who presented with the complaints of diarrhea, vomiting and generalized body weakness. On examination, she was found to have dehydration, decreased power in all her limbs, cervical lymphadenopathy and hepatosplenomegaly. Investigations showed severe hypokalemia, hyponatremia, hypomagnesemia, hypoglycemia and mildly enlarged kidneys on ultrasonography. Biopsy of the duodenum confirmed the flare up of coeliac disease, while cervical lymph node biopsy was positive for atypical lymphoid infiltrate and a morphology suggestive of non-Hodgkin's lymphoma...
November 30, 2016: Curēus
https://www.readbyqxmd.com/read/28070037/-bm-mscs-from-wuzhishan-mini-pigs-delay-the-progress-of-renal-fibrosis-induced-by-chronic-kidney-disease-through-%C3%A2-autocrine-hepatocyte-growth-factor-in-vitro
#3
Yang Xiang, Jiale Long, Jiansheng Xing, Yuanhui Gao, Qing Cheng, Yong Cai, Zhenxiang Liu, Shufang Zhang, Lie Chen, Chao Yang, Zhiming Bai
To isolate bone marrow mesenchymal stem cells (BM-MSCs) and establish the model of chronic kidney disease (CKD) of Wuzhishan (WZS) mini-pig, and to study the repairment effect of BM-MSCs on CKD-induced renal fibrosis in vitro.
 Methods: Density gradient method was used to isolate and culture BM-MSCs. The cells were verified by morphology, phenotype, differentiation and so on. The left partial ureteral obstruction (LPUUO) was used to establish the CKD model, which was evaluated by B-ultrasound, single-photon emission computed tomography (SPECT), HE and Masson staining...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28069070/successful-management-of-synchronous-recurrent-breast-carcinoma-with-chronic-myelogenous-leukemia-a-case-report
#4
Choukri Elm'hadi, Mohamed Reda Khmamouche, Rachid Tanz, Mehdi Toreis, ElMehdi Mahtat, Mohammed Allaoui, Mohammed Oukabli, Nezha Messaoudi, Hassan Errihani, Mohammed Ichou
BACKGROUND: Survival is increasing after early breast cancer revealing frequent relapses and possibility of developing secondary malignancies. The concomitant occurrence of these two events is exceptionally disastrous and lethal. We report a case of a Moroccan woman who was successfully managed for synchronous recurrent breast carcinoma and chronic myelogenous leukemia. CASE PRESENTATION: A 42-year-old Moroccan woman was diagnosed with localized breast carcinoma in 2008...
January 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28068880/low-intensity-vibrations-normalize-adipogenesis-induced-morphological-and-molecular-changes-of-adult-mesenchymal-stem-cells
#5
Oznur Baskan, Gulistan Mese, Engin Ozcivici
Bone marrow mesenchymal stem cells that are committed to adipogenesis were exposed daily to high-frequency low-intensity mechanical vibrations to understand molecular, morphological and ultrastructural adaptations to mechanical signals during adipogenesis. D1-ORL-UVA mouse bone marrow mesenchymal stem cells were cultured with either growth or adipogenic medium for 1 week. Low-intensity vibration signals (15 min/day, 90 Hz, 0.1 g) were applied to one group of adipogenic cells, while the other adipogenic group served as a sham control...
January 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28066929/diagnostic-work-up-of-acute-myeloid-leukemia
#6
Olga K Weinberg, Aliyah R Sohani, Parul Bhargava, Valentina Nardi
Acute myeloid leukemia (AML) is characterized by a clonal expansion of undifferentiated myeloid precursors resulting in impaired hematopoiesis and bone marrow failure. In 2016, the World Health Organization (WHO) published revisions to the classification of myeloid neoplasms and acute leukemias. Similar to the 2008 classification, the updated classification incorporates clinical features, morphology, immunophenotyping, and cytogenetics, with greater emphasis on molecular genetics, to define disease entities...
January 9, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28066800/cd36-deficiency-impairs-the-small-intestinal-barrier-and-induces-subclinical-inflammation-in-mice
#7
Vincenza Cifarelli, Stoyan Ivanov, Yan Xie, Ni-Huiping Son, Brian T Saunders, Terri A Pietka, Trevor M Shew, Jun Yoshino, Sinju Sundaresan, Nicholas O Davidson, Ira J Goldberg, Andrew E Gelman, Bernd H Zinselmeyer, Gwendalyn J Randolph, Nada A Abumrad
BACKGROUND & AIMS: CD36 has immuno-metabolic actions and is abundant in the small intestine on epithelial, endothelial and immune cells. We examined the role of CD36 in gut homeostasis using mice null for CD36 (CD36KO) and with CD36 deletion specific to enterocytes (Ent-CD36KO) or endothelial cells (EC-CD36KO). METHODS: Intestinal morphology was evaluated using immunohistochemistry and electron microscopy (EM). Intestinal inflammation was determined from neutrophil infiltration and expression of cytokines, toll-like receptors and COX-2...
January 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28060333/mesenchymal-stromal-cell-culture-and-delivery-in-autologous-conditions-a-smart-approach-for-orthopedic-applications
#8
Luisa Trombi, Serena Danti, Sara Savelli, Stefania Moscato, Delfo D'Alessandro, Claudio Ricci, Stefano Giannotti, Mario Petrini
Human Mesenchymal Stromal Cells (hMSCs) are cultured in vitro with different media. Limits on their use in clinical settings, however, mainly depend on potential biohazard and inflammation risks exerted by xenogeneic nutrients for their culture. Human derivatives or recombinant materials are the first choice candidates to reduce these reactions. Therefore, culture supplements and materials of autologous origin represent the best nutrients and the safest products. Here, we describe a new protocol for the isolation and culture of bone marrow hMSCs in autologous conditions - namely, patient-derived serum as a supplement for the culture medium and fibrin as a scaffold for hMSC administration...
December 8, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059092/bone-marrow-morphology-and-disease-progression-in-congenital-thrombocytopenia-a-detailed-clinicopathologic-and-genetic-study-of-eight-cases
#9
Hamilton C Tsang, James B Bussel, Susan Mathew, Yen-Chun Liu, Allison A Imahiyerobo, Attilio Orazi, Julia T Geyer
Patients with congenital thrombocytopenia have an increased risk of developing myeloid neoplasms. In these cases, the morphologic distinction between disease at baseline and at progression is challenging. This report analyzes clinicopathologic features of congenital thrombocytopenia with long-term follow-up at one referral center. Records from the last 20 years were searched for cases of congenital thrombocytopenia with bone marrow biopsies and peripheral blood smears. The clinical, morphologic, immunophenotypic, and molecular features were analyzed...
January 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28052942/refractory-primary-immune-thrombocytopenia-with-subsequent-del-5q-mds-complete-remission-of-both-after-lenalidomide
#10
Thomas Bech Mortensen, Henrik Frederiksen, Claus Werenberg Marcher, Birgitte Preiss
A patient with refractory primary immune thrombocytopenia (ITP) characterised by severe skin and mucosal bleedings was treated with several ITP-directed therapies including cyclophosphamide. He later developed therapy-related del(5q) myelodysplastic syndrome with no dysplastic morphological features in bone marrow. He remained severely thrombocytopenic, which suggests ongoing immune mediated platelet destruction. After two 3 week cycles of low-dose lenalidomide, complete cytogenetic remission and complete normalisation of platelet count were observed...
January 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28052408/relapse-risk-and-survival-in-patients-with-flt3-acute-myeloid-leukemia-undergoing-stem-cell-transplantation
#11
Sameh Gaballa, Rima Saliba, Betul Oran, Jonathan E Brammer, Julianne Chen, Gabriela Rondon, Amin M Alousi, Partow Kebriaei, David Marin, Uday R Popat, Borje S Andersson, Elizabeth J Shpall, Elias Jabbour, Naval Daver, Michael Andreeff, Farhad Ravandi, Jorge Cortes, Keyur Patel, Richard E Champlin, Stefan O Ciurea
In patients with AML with FMS-like tyrosine kinase 3 (FLT3) mutations, the significance of minimal residual disease (MRD) detected by PCR before allogeneic stem cell transplantation (SCT) on outcomes after transplant remains unclear. We identified 200 patients with FLT3-AML who underwent SCT at our institution. Disease status at transplant was: first or second complete remission (CR1/CR2, n=119), high-risk CR (third or subsequent CR, marrow hypoplasia, or incomplete count recovery) (CR-HR, n=31), and morphological evidence of active disease (AD, n=50)...
January 4, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28052371/significance-of-recurrence-of-minimal-residual-disease-detected-by-multi-parameter-flow-cytometry-in-patients-with-acute-lymphoblastic-leukemia-in-morphological-remission
#12
Naveen Pemmaraju, Hagop Kantarjian, Jeffrey L Jorgensen, Elias Jabbour, Nitin Jain, Deborah Thomas, Susan O'Brien, Xuemei Wang, Xuelin Huang, Sa A Wang, Marina Konopleva, Sergej Konoplev, Tapan Kadia, Rebecca Garris, Sherry Pierce, Guillermo Garcia-Manero, Jorge Cortes, Farhad Ravandi
We sought to determine the significance of minimal residual disease (MRD) relapse in patients with ALL after achieving MRD negative status following induction and consolidation therapy. Between January 2003 and September 2014, 647 newly diagnosed patients were treated [HyperCVAD-based (n=531); Augmented BFM (n=116)]. 601 (93%) achieved complete remission (CR), and 546 (91%) became MRD negative. Fifty-five patients [HyperCVAD-based (n=49); Augmented BFM (n=6)] developed recurrence of MRD while still in morphological CR and are the subjects of this study...
January 4, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28046752/su-f-i-24-feasibility-of-magnetic-susceptibility-to-relative-electron-density-conversion-method-for-radiation-therapy
#13
K Ito, N Kadoya, M Chiba, K Sato, T Nagasaka, K Yamanaka, S Dobashi, K Takeda, H Matsushita, K Jingu
PURPOSE: The aim of this study is to develop radiation treatment planning using magnetic susceptibility obtained from quantitative susceptibility mapping (QSM) via MR imaging. This study demonstrates the feasibility of a method for generating a substitute for a CT image from an MRI. METHODS: The head of a healthy volunteer was scanned using a CT scanner and a 3.0 T MRI scanner. The CT imaging was performed with a slice thickness of 2.5 mm at 80 and 120 kV (dual-energy scan)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045622/use-of-minimal-residual-disease-assessment-to-redefine-induction-failure-in-pediatric-acute-lymphoblastic-leukemia
#14
David O'Connor, Anthony V Moorman, Rachel Wade, Jeremy Hancock, Ronald M R Tan, Jack Bartram, John Moppett, Claire Schwab, Katharine Patrick, Christine J Harrison, Rachael Hough, Nick Goulden, Ajay Vora, Sujith Samarasinghe
Purpose Our aim was to determine the role of end-of-induction (EOI) minimal residual disease (MRD) assessment in the identification and stratification of induction failure in patients with pediatric acute lymphoblastic leukemia (ALL) and to identify genetic abnormalities that drive disease in these patients. Patients and Methods Analysis included 3,113 patients who were treated in the Medical Research Council UKALL2003 multicenter randomized trial (NCT00222612) between 2003 and 2011. MRD was measured by using standardized real-time quantitative PCR...
January 3, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28042456/safety-and-efficacy-of-azacitidine-in-elderly-patients-with-intermediate-to-high-risk-myelodysplastic-syndromes
#15
REVIEW
Shyamala C Navada, Lewis R Silverman
Myelodysplastic syndromes (MDS) represent a clonal hematopoietic stem cell disorder characterized by morphologic features of dyspoiesis, a hyperproliferative bone marrow, and one or more peripheral blood cytopenias. In patients classified according to the Revised International Prognostic Scoring System (R-IPSS) with intermediate or higher-risk disease, there is an increased risk of death due to progressive bone marrow failure or transformation to acute myeloid leukemia (AML). Azacitidine was the first DNA hypomethylating agent approved by the United States (US) Food and Drug Administration (FDA) for the treatment of MDS and the only therapy that has demonstrated a significant survival benefit over conventional care regimens (CCRs) in patients with intermediate or higher-risk disease...
January 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/28041941/a-simple-flow-cytometry-method-to-evaluate-peripheral-blood-contamination-of-bone-marrow-aspirates
#16
José Antonio Delgado, Francisco Guillén-Grima, Cristina Moreno, Carlos Panizo, Carmen Pérez-Robles, Juan José Mata, Laura Moreno, Paula Arana, Silvia Chocarro, Juana Merino
Bone marrow (BM) aspirates used for flow-cytometry (FCM) studies are usually obtained from a second aspiration, as the primary aspirate is used for morphological assessment. For this reason, the FCM samples unavoidably contain some blood; although, good-quality samples contain only a small amount. It is of utmost importance to assess the quality of samples prior to FCM analysis; yet, contamination with peripheral blood (PB) is not evaluated in most laboratories, possibly because the methods available are either qualitative or too complex for daily practice...
December 29, 2016: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28036159/comparison-in-knee-osteoarthritis-joint-damage-patterns-among-individuals-with-an-intact-complete-and-partial-anterior-cruciate-ligament-rupture
#17
Victoria L Johnson, Ali Guermazi, Frank W Roemer, David J Hunter
AIM: The aim of this study was to examine the difference in the pattern of articular damage in persons with either a partial anterior cruciate ligament (ACL) tear; a complete ACL tear or no ACL tear. METHODS: Our study included 600 individuals (of the 600 individuals, 25 with a partial, 12 with a complete ACL tear and 563 with no ACL tear) from the progression sub-cohort of the Osteoarthritis Initiative. Individuals had a mean age of 61.8 years (range 45-79 years)...
December 30, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28030425/features-of-hepatitis-in-hepatitis-associated-aplastic-anemia-clinical-and-histopathologic-study
#18
Kalyani R Patel, Alison Bertuch, Ghadir S Sasa, Ryan W Himes, Hao Wu
OBJECTIVES: Hepatitis-associated aplastic anemia (HAA) is a rare variant of aplastic anemia in which patients present with severe pancytopenia after an episode of acute hepatitis. The marrow failure is often rapid, severe, and usually fatal if untreated. The preceding hepatitis is largely under-studied. METHODS: Retrospective study of the clinical and histopathologic features of hepatitis in pediatric patients who subsequently developed aplastic anemia and comparison with consecutive cases of acute liver failure and random cases of autoimmune hepatitis during the same time frame...
January 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28028966/glycogen-synthase-kinase-3%C3%AE-gsk-3%C3%AE-and-nuclear-factor-kappa-b-nfkb-in-childhood-acute-lymphoblastic-leukemia
#19
Cristian Fabian Layton Tovar, Hugo Mendieta Zerón, Maria Del Socorro Camarillo Romero, Yanko V Fabila Sánchez, Isidoro Tejocote Romero
BACKGROUND: Acute lymphocytic leukemia (ALL) is the most common hematologic malignancy in early childhood. In children with acute lymphoblastic leukemia (ALL), the activity of glycogen synthase kinase (GSK-3β) has been associated with changes in the transcriptional activity and expression of nuclear factor kappa beta (NFKB) in the mononuclear cells of bone marrow. OBJECTIVES: The aim of the study was to determine the possible role of glycogen synthase kinase 3beta (GSK-3β) and nuclear factor kappa beta (NFKB) as prognostic variables in pediatric patients with ALL...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28028026/diagnosis-risk-stratification-and-response-evaluation-in-classical-myeloproliferative-neoplasms
#20
Elisa Rumi, Mario Cazzola
Philadelphia-negative classical myeloproliferative neoplasms include polycythemia vera, essential thrombocythemia, and primary myelofibrosis. The 2016 revision of the World Health Organization (WHO) classification of tumors of hematopoietic and lymphoid tissues includes new criteria for the diagnosis of these disorders. Somatic mutations in the 3 driver genes, that is, JAK2, CALR, and MPL, represent major diagnostic criteria in combination with hematologic and morphological abnormalities. Polycythemia vera is characterized by erythrocytosis with suppressed endogenous erythropoietin production, bone marrow panmyelosis, and JAK2 mutation...
December 27, 2016: Blood
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