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https://www.readbyqxmd.com/read/28110392/tarsal-navicular-stress-fractures
#1
REVIEW
Rachel J Shakked, Emily E Walters, Martin J O'Malley
PURPOSE OF REVIEW: Navicular stress fractures are common in athletes and management is debated. This article will review the evaluation and management of navicular stress fractures. RECENT FINDINGS: Various operative and non-operative adjunctive treatment modalities are reviewed including the relevance of vitamin D levels, use of shock wave therapy and bone marrow aspirate concentrate (BMAC), and administration of teriparatide. Surgical treatment may be associated with earlier return to sports...
January 21, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28108285/rifampin-suppresses-osteoclastogenesis-and-titanium-particle-induced-osteolysis-via-modulating-rankl-signaling-pathways
#2
Liang Zhu, Hui Kang, Chang-An Guo, Wen-Shuai Fan, Yi-Ming Wang, Lian-Fu Deng, Zuo-Qin Yan
BACKGROUND: Wear particles liberated from the surface of prostheses are considered to be main reason for osteoclast bone resorption and that extensive osteoclastogenesis leads to peri-implant osteolysis and subsequent prosthetic loosening. The aim of this study was to assess the effect of rifampin on osteoclastogenesis and titanium (Ti) particle-induced osteolysis. METHODS: The Ti particle-induced osteolysis mouse calvarial model and bone marrow-derived macrophages (BMMs) were used...
January 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28105983/effect-of-bone-marrow-aspirate-concentrate-platelet-rich-plasma-on-tendon-derived-stem-cells-and-rotator-cuff-tendon-tear
#3
Sun Jeong, Da Hyun, Jong Wook, Silvia Park, Sang Jun
Bone marrow aspirate concentrates (BMACs) and platelet-rich plasma (PRP) are good sources to control the differentiation of tendon derived stem cells (TDSCs) but there has been no study about the effect of BMAC-PRP complex on TDSCs and tendinopathy. The aim of this study was to investigate the effect of BMAC-PRP on the TDSCs and to find the therapeutic effect of BMAC-PRP on the rotator cuff tendon tear. Chondrogenic and osteogenic potential of TDSCs decreased, but adipogenic potential of TDSCs revealed no significant difference when they were co-cultured with BMAC-PRP...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28101472/the-effects-of-hypoxia-on-u937-cell-line-in-mesenchymal-stem-cells-co-culture-system
#4
Mostafa Ejtehadifar, Karim Shamsasenjan, Parvin Akbarzadehlaleh, Sarah Zahedi, Narjes Kazemi
Purpose: Mesenchymal Stem Cells (MSCs) are the most important members of Bone Marrow (BM) milieu. MSCs affect different kinds of cells, particularly malignant cells of hematologic malignancies, but the effects of MSCs are unclear exactly. Here we analyzed the effects of derived Umbilical Cord Blood-MSCs on proliferation, cell death and some surface markers of U937 cell line in a Co-culture system with MSCs. Methods: Here we designed Co-culture systems as a model of BM milieu. We cultured U937 cells on UCB-MSCs and MSCs Conditioned Medium (C...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28097237/oxidized-camkii-promotes-asthma-through-the-activation-of-mast-cells
#5
Jingjing Qu, Danh C Do, Yufeng Zhou, Elizabeth Luczak, Wayne Mitzner, Mark E Anderson, Peisong Gao
Oxidation of calmodulin-dependent protein kinase II (ox-CaMKII) by ROS has been associated with asthma. However, the contribution of ox-CaMKII to the development of asthma remains to be fully characterized. Here, we tested the effect of ox-CaMKII on IgE-mediated mast cell activation in an allergen-induced mouse model of asthma using oxidant-resistant CaMKII MMVVδ knockin (MMVVδ) mice. Compared with WT mice, the allergen-challenged MMVVδ mice displayed less airway hyperresponsiveness (AHR) and inflammation...
January 12, 2017: JCI Insight
https://www.readbyqxmd.com/read/28094456/waldenstr%C3%A3-m-macroglobulinemia-2017-update-on-diagnosis-risk-stratification-and-management
#6
Morie A Gertz
: Disease Overview: Waldenström macroglobulinemia (WM) is a lymphoplasmacytic lymphoma with immunoglobulin M (IgM) monoclonal protein. Clinical features include anemia, thrombocytopenia, hepatosplenomegaly, lymphadenopathy, and rarely hyperviscosity. DIAGNOSIS: Presence of IgM monoclonal protein associated with ≥10% clonal lymphoplasmacytic cells in bone marrow confirms the diagnosis. The L265P mutation in MYD88 is detectable in more than 90% of patients. Risk Stratification: Age, hemoglobin level, platelet count, β2 microglobulin, and monoclonal IgM concentrations are characteristics required for prognosis...
February 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28088283/quantification-of-plasma-sulfatides-by-mass-spectrometry-utility-for-metachromatic-leukodystrophy
#7
Jennifer T Saville, Nicholas J C Smith, Janice M Fletcher, Maria Fuller
Impaired sulfatide catabolism is the primary biochemical insult in patients with the inherited neurodegenerative disease, metachromatic leukodystrophy (MLD), and sulfatide elevation in body fluids is useful in the diagnostic setting. Here we used mass spectrometry to quantify fourteen species of sulfatide, in addition to the deacetylated derivative, lyso-sulfatide, using high pressure liquid chromatography-electrospray ionisation-tandem mass spectrometry in both positive and negative ion mode. A single phase extraction of 0...
February 22, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28073413/-cellular-and-molecular-mechanisms-of-anti-inflammatory-effect-of-peroxisome-proliferator-activated-receptor-%C3%AE
#8
M J Jiao, L Zhou, F Ren, Y D Wang, C Shen, Z P Duan, C Y Zhao
Objective: To investigate the cellular and molecular mechanisms of the anti-inflammatory effect of peroxisome proliferator-activated receptor α (PPARα). Methods: Firstly, bone marrow-derived macrophages (BMDMs) were randomly divided into control group, LPS group, WY14643 10 μmol/L group, WY14643 25 μmol/L group, and WY14643 50 μmol/L group using a random number table. Secondly, BMDMs were randomly divided into LPS group, WY14643+LPS group, and 3-MA+WY14643+LPS group. Primary BMDMs were stimulated by LPS (20 ng/ml) to establish the cellular model of inflammation...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28072764/antitumour-activity-of-trabectedin-in-myelodysplastic-myeloproliferative-neoplasms
#9
Michela Romano, Matteo Giovanni Della Porta, Anna Gallì, Nicolò Panini, Simonetta Andrea Licandro, Ezia Bello, Ilaria Craparotta, Vittorio Rosti, Elisa Bonetti, Richard Tancredi, Marianna Rossi, Laura Mannarino, Sergio Marchini, Luca Porcu, Carlos M Galmarini, Alberto Zambelli, Marco Zecca, Franco Locatelli, Mario Cazzola, Andrea Biondi, Alessandro Rambaldi, Paola Allavena, Eugenio Erba, Maurizio D'Incalci
BACKGROUND: Juvenile myelomonocytic leukaemia (JMML) and chronic myelomonocytic leukaemia (CMML) are myelodysplastic myeloproliferative (MDS/MPN) neoplasms with unfavourable prognosis and without effective chemotherapy treatment. Trabectedin is a DNA minor groove binder acting as a modulator of transcription and interfering with DNA repair mechanisms; it causes selective depletion of cells of the myelomonocytic lineage. We hypothesised that trabectedin might have an antitumour effect on MDS/MPN...
January 10, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28064033/altered-gait-mechanics-and-elevated-serum-pro-inflammatory-cytokines-in-asymptomatic-patients-with-mri-evidence-of-knee-cartilage-loss
#10
Shannon N Edd, Julien Favre, Katerina Blazek, Patrick Omoumi, Jessica L Asay, Thomas P Andriacchi
OBJECTIVE: To test if sagittal plane gait mechanics parameters and serum inflammation levels differ between healthy asymptomatic subjects and asymptomatic subjects with magnetic resonance imaging (MRI) evidence of cartilage loss. DESIGN: Gait mechanics and resting serum tumor necrosis factor-α (TNFα) concentrations were measured for two groups of asymptomatic subjects recruited for a previous study: Pre-Osteoarthritis (OA) subjects had MRI evidence of partial- or full-thickness knee cartilage loss in at least one compartment (n=52 (30 female), 1...
January 4, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28060111/frequent-infections-hypotonia-and-anemia-in-a-breastfed-infant
#11
Fatma Kamoun, Rime Guirat, Fatma Megdich, Salma Ben Ameur, Choumous Kallel, Mongia Hachicha
Vitamin B12 deficiency may be responsible of serious hematologic and neurodevelopmental abnormalities. We report the case of an infant who was hospitalized because of recurrent infections, failure to thrive, hypotonia, and weakness. He was 8 months old and had been exclusively breastfed. Blood cell count showed pancytopenia with megaloblastic bone marrow. The serum IgG concentration was low. Vitamin B12 level was very low and associated with increased urinary methylmalonic acid. Cobalamin deficiency was caused by mother's unrecognized pernicious anemia...
January 5, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28049042/aryl-hydrocarbon-receptor-activation-by-2-3-7-8-tetrachlorodibenzo-p-dioxin-impairs-human-b-lymphopoiesis
#12
Jinpeng Li, Ashwini S Phadnis-Moghe, Robert B Crawford, Norbert E Kaminski
The homeostasis of peripheral B cell compartment requires lifelong B lymphopoiesis from hematopoietic stem cells (HSC). As a result, the B cell repertoire is susceptible to disruptions of hematopoiesis. Increasing evidence, primarily from rodent models, shows that the aryl hydrocarbon receptor (AHR) regulates hematopoiesis. To study the effects of persistent AHR activation on human B cell development, a potent AHR agonist and known environmental contaminant, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) was utilized...
December 31, 2016: Toxicology
https://www.readbyqxmd.com/read/28046055/role-of-interleukin-17a-on-the-chemotactic-responses-to-ccl7-in-a-murine-allergic-rhinitis-model
#13
Yu-Lian Zhang, Doo Hee Han, Dong-Young Kim, Chul Hee Lee, Chae-Seo Rhee
BACKGROUND: The proinflammatory cytokine interleukin (IL)-17A is associated with eosinophil infiltration into the nasal mucosa in a mouse model of ovalbumin-induced allergic rhinitis. Chemotaxis of eosinophils is mediated primarily through C-C chemokine receptor type 3 (CCR3). However, the mechanism underlying the IL-17A-mediated enhancement of eosinophil recruitment via chemoattractants/chemokines remains unknown. OBJECTIVES: In this study, we assessed the contribution of IL-17A to eosinophil-related inflammation via the CCL7/CCR3 pathway in experimental allergic rhinitis...
2017: PloS One
https://www.readbyqxmd.com/read/28045930/the-ccl2-ccr2-axis-affects-transmigration-and-proliferation-but-not-resistance-to-chemotherapy-of-acute-myeloid-leukemia-cells
#14
Patricia Macanas-Pirard, Thomas Quezada, Leonardo Navarrete, Richard Broekhuizen, Andrea Leisewitz, Bruno Nervi, Pablo A Ramírez
Acute myeloid leukemia (AML) has a high mortality rate despite chemotherapy and transplantation. Both CXCR4/SDF-1 and VLA-4/VCAM1 axes are involved in leukemia protection but little is known about the role of CCL2/CCR2 in AML biology and protection against chemotherapy. We measured CCR2 expression in AML cell lines and primary AML cells by flow cytometry (FCM), real time PCR (RT-PCR) and western blot (WB). CCL2 production was quantified by solid phase ELISA in peripheral blood (PB) and bone marrow (BM) serum...
2017: PloS One
https://www.readbyqxmd.com/read/28043150/histone-deacetylase-inhibitors-in-plasma-cell-leukemia-treatment-effect-of-bone-marrow-microenvironment
#15
I Burianova, K Kuzelova, O Mitrovsky, I Spicka, P StOckbauer, M Zackova
In the presented study we analysed the effect of histone deacetylase inhibitors (HDACi) suberoylanilide hydroxamic acid (SAHA) and valproic acid (VPA) on human plasma cell leukemia (PCL) cell line UHKT-944 in the presence of bone marrow microenvironment (BMM). For the analysis, the cells were cultured alone, with bone marrow stromal cells (BMSCs), with extracellular matrix (ECM) components or with interleukin-6, and treated with varied concentrations of SAHA and VPA for 24/48 hours. To study the effect of HDACi, we investigated cell proliferation, apoptosis, cell cycle and changes in selected signalling pathways...
January 3, 2017: Neoplasma
https://www.readbyqxmd.com/read/28043032/kaempferol-slows-intervertebral-disc-degeneration-by-modifying-lps-induced-osteogenesis-adipogenesis-imbalance-and-inflammation-response-in-bmscs
#16
Jun Zhu, Haoyu Tang, Zhenhua Zhang, Yong Zhang, Chengfeng Qiu, Ling Zhang, Pinge Huang, Feng Li
Intervertebral disc (IVD) degeneration is a common disease that represents a significant cause of socio-economic problems. Bone marrow-derived mesenchymal stem cells (BMSCs) are a potential autologous stem cell source for the nucleus pulposus regeneration. Kaempferol has been reported to exert protective effects against both osteoporosis and obesity. This study explored the effect of kaempferol on BMSCs differentiation and inflammation. The results demonstrated that kaempferol did not show any cytotoxicity at concentrations of 20, 60 and 100μM...
February 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28024508/-reconstruction-of-humanized-bone-marrow-niche-in-immunodeficiency-mouse
#17
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/28018908/partial-cranial-cruciate-ligament-tears-treated-with-stem-cell-and-platelet-rich-plasma-combination-therapy-in-36-dogs-a-retrospective-study
#18
Sherman O Canapp, Christopher S Leasure, Catherine Cox, Victor Ibrahim, Brittany J Carr
OBJECTIVE: To evaluate outcomes in 36 dogs with a partial cranial cruciate ligament (CCL) tear treated with autologous bone marrow aspirate concentrate (BMAC) or adipose-derived progenitor cells (ADPC) with platelet-rich plasma (PRP) combination. MATERIALS AND METHODS: Medical records of client-owned dogs diagnosed with an early partial (≤50%) tear of the craniomedial band of the CCL that was treated with BMAC-PRP or ADPC-PRP were reviewed from 2010 to 2015. Signalment, medical history, physical and orthopedic examination, objective temporospatial gait analyses, radiographs, day 0 and day 90 diagnostic arthroscopy findings, treatment, and outcome were among the data collected...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28017615/pharmacological-activation-of-aldehyde-dehydrogenase-2-promotes-osteoblast-differentiation-via-bone-morphogenetic-protein-2-and-induces-bone-anabolic-effect
#19
Monika Mittal, Subhashis Pal, Shyamsundar Pal China, Konica Porwal, Kapil Dev, Richa Shrivastava, Kanumuri Siva Rama Raju, Mamunur Rashid, Arun Kumar Trivedi, Sabyasachi Sanyal, Muhammad Wahajuddin, Smrati Bhaduria, Rakesh Maurya, Naibedya Chattopadhyay
Aldehyde dehydrogenases (ALDHs) are a family of enzymes involved in detoxifying aldehydes. Previously, we reported that an ALDH inhibitor, disulfiram caused bone loss in rats and among ALDHs, osteoblast expressed only ALDH2. Loss-of-function mutation in ALDH2 gene is reported to cause bone loss in humans which suggested its importance in skeletal homeostasis. We thus studied whether activating ALDH2 by N-(1, 3-benzodioxol-5-ylmethyl)-2, 6-dichlorobenzamide (alda-1) had osteogenic effect. We found that alda-1 increased and acetaldehyde decreased the differentiation of rat primary osteoblasts and expressions of ALDH2 and bone morphogenetic protein-2 (BMP-2)...
December 23, 2016: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28013349/pharmacology-and-toxicology-of-the-novel-investigational-agent-cantrixil-trx-e-002-1
#20
REVIEW
Muhammad Wasif Saif, Andrew Heaton, Kimberley Lilischkis, James Garner, David M Brown
PURPOSE: Recurrent, chemo-resistant ovarian cancer is thought to be due to a subgroup of slow-growing, drug-resistant cancer cells with stem-like properties and a high capacity for tumour repair. Cantrixil targets this sub-population of cells and is being developed as an intraperitoneal therapy to be used as first-line therapy in combination with carboplatin for epithelial ovarian cancer. The studies presented here justify further development. METHODS: A GLP dog CV study using a 4 × 4 Latin Square Crossover study was conducted using telemetric ECG recordings from dogs post IP administration to assess for cardiac abnormalities...
December 24, 2016: Cancer Chemotherapy and Pharmacology
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