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  Bone marrow necrosis

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https://www.readbyqxmd.com/read/29785143/pilot-study-of-the-antifibrotic-effects-of-the-multikinase-inhibitor-pacritinib-in-a-mouse-model-of-liver-fibrosis
#1
Suliman Al-Fayoumi, Taishi Hashiguchi, Yuka Shirakata, John Mascarenhas, Jack W Singer
Background: Fibrotic diseases result from an exuberant response to chronic inflammation. Myelofibrosis is the end result of inflammation in bone, caused by an inflammatory process triggered by production of abnormal myeloid cells driven by mutations affecting the JAK-STAT pathway. Inflammatory cytokine overproduction leads to increased mesenchymal cell proliferation, culminating in fibrosis. Although JAK2 inhibitors, such as the JAK1/2 inhibitor ruxolitinib and the JAK2/FLT3/CSF1R/IRAK1 inhibitor pacritinib suppress abnormal clone expansion in myelofibrosis, ruxolitinib does not appear to prevent or reverse bone-marrow fibrosis in most patients...
2018: Journal of Experimental Pharmacology
https://www.readbyqxmd.com/read/29784961/sarcodon-imbricatus-polysaccharides-improve-mouse-hematopoietic-function-after-cyclophosphamide-induced-damage-via-g-csf-mediated-jak2-stat3-pathway
#2
Xue Wang, Qiubo Chu, Xue Jiang, Yue Yu, Libian Wang, Yaqi Cui, Jiahui Lu, Lirong Teng, Di Wang
Sarcodon imbricatus, a rare medicinal and edible fungus, has various pharmacological bioactivities. We investigated the effects of S. imbricatus polysaccharides (SIPS) on hematopoietic function and identified the underlying mechanisms using in vitro experiments with CHRF, K562, and bone marrow mononuclear cells (BMMNCs) and in vivo experiments with a mouse model of cyclophosphamide-induced hematopoietic dysfunction. We found that SIPS induced proliferation and differentiation of CHRF and K562 cells and upregulated the expression of hematopoietic-related proteins, including p90 ribosomal S6 kinases (RSK1p90), c-Myc, and ETS transcription factor, in the two cell lines...
May 21, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29777577/autologous-bone-marrow-mesenchymal-stem-cells-improve-the-quality-and-stability-of-vascularized-flap-surgery-of-irradiated-skin-in-pigs
#3
Christine Linard, Michel Brachet, Carine Strup-Perrot, Bruno L'homme, Elodie Busson, Claire Squiban, Valerie Holler, Michel Bonneau, Jean-Jacques Lataillade, Eric Bey, Marc Benderitter
Cutaneous radiation syndrome has severe long-term health consequences. Because it causes an unpredictable course of inflammatory waves, conventional surgical treatment is ineffective and often leads to a fibronecrotic process. Data about the long-term stability of healed wounds, with neither inflammation nor resumption of fibrosis, are lacking. In this study, we investigated the effect of injections of local autologous bone marrow-derived mesenchymal stromal cells (BM-MSCs), combined with plastic surgery for skin necrosis, in a large-animal model...
May 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29770701/mk2-mediates-macrophage-activation-and-acute-lung-injury-by-regulating-let-7e-mirna
#4
Yaxian Wu, Huiqiong He, Yunhe Ding, Sirui Liu, Depeng Zhang, Jun Wang, Hongchao Jiang, Dan Zhang, Lei Sun, Richard D Ye, Feng Qian
MAPK-activated protein kinase 2 (MK2) plays a critical role in the development of inflammation. However, the modulatory mechanisms in macrophage activation and acute lung injury (ALI) haven't been completely defined. Here, we reported that MK2 deficient mice (MK2-/-) protected against sepsis-induced ALI. In response to lipopolysaccharide (LPS) challenge, MK2-/- mice and myeloid cell-specific MK2 conditional knockout mice (MK2Lyz2-KO) exhibited attenuated inflammatory response, especially producing fewer amounts of tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and macrophage inflammatory protein 2 (MIP-2)...
May 17, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29765083/adeno-associated-virus-vector-mediated-interleukin-10-induction-prevents-vascular-inflammation-in-a-murine-model-of-kawasaki-disease
#5
Jun Nakamura, Sachiko Watanabe, Hiroaki Kimura, Motoi Kobayashi, Tadayoshi Karasawa, Ryo Kamata, Fumitake Usui-Kawanishi, Ai Sadatomo, Hiroaki Mizukami, Noriko Nagi-Miura, Naohito Ohno, Tadashi Kasahara, Seiji Minota, Masafumi Takahashi
Kawasaki disease (KD), which is the leading cause of pediatric heart disease, is characterized by coronary vasculitis and subsequent aneurysm formation. Although intravenous immunoglobulin therapy is effective for reducing aneurysm formation, a certain number of patients are resistant to this therapy. Because interleukin-10 (IL-10) was identified as a negative regulator of cardiac inflammation in a murine model of KD induced by Candida albicans water-soluble fraction (CAWS), we investigated the effect of IL-10 supplementation in CAWS-induced vasculitis...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29749549/enhanced-proliferation-and-differentiation-of-ho-1-gene-modified-bone-marrow-derived-mesenchymal-stem-cells-in-the-acute-injured-kidney
#6
Nanmei Liu, Huiling Wang, Guofeng Han, Jin Cheng, Weifeng Hu, Jinyuan Zhang
The aim of the present study was to investigate the effect of heme oxygenase-1 (HO-1) overexpression on the survival and differentiation ability of bone marrow‑derived mesenchymal stem cells (BMSCs) in the acute kidney injury (AKI) microenvironment. HO-1-BMSCs and enhanced green fluorescent protein (eGFP)-BMSCs were constructed. Rat ischemia/reperfusion (I/R)‑AKI-kidney homogenate supernatant was prep-ared to treat the BMSCs, eGFP-BMSCs and HO-1-BMSCs in vitro. In the AKI microenvironment, the HO-1-BMSCs exhibited a smaller proportion of cells at the G0/G1 phase, and a larger proportion of cells expressing proliferating cell nuclear antigen (PCNA) and cytokeratin 18 (CK18)...
May 11, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29749459/ctrp9-ameliorates-cellular-senescence-via-pgc%C3%A2-1%C3%AE-ampk-signaling-in-mesenchymal-stem-cells
#7
Qun Li, Zhangzhang Zhu, Chengde Wang, Lin Cai, Jianglong Lu, Yongchun Wang, Jiadong Xu, Zhipeng Su, Weiming Zheng, Xianbin Chen
Stroke is the second most common cause of death worldwide, and thus, it imposes great financial burdens on both individuals and society. Mesenchymal stem cell (MSC) therapy is a promising approach for ischemic brain injury. However, MSC treatment potential is progressively reduced with age, limiting their therapeutic efficacy for brain repair post‑stroke. C1q and tumor necrosis factor‑related protein 9 (CTRP9) is a novel cytoprotective cytokine with antioxidant effects, which is highly expressed in brain tissue...
May 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29745506/-role-and-mechanism-of-camp-ca-2-signal-pathway-in-differentiation-of-bone-marrow-mesenchymal-stem-cells-into-neuronal-cells-induced-by-salidroside
#8
Ling Zhao, Hongbin Zhao, Wen Qin, Gen Li, Junjie Tang, Jiuna Wang
To investigate the mechanism of cAMP/Ca 2+ signaling pathway inducing bone marrow mesenchymal stem cells to differentiate into neuronal cells, we cultured the bone marrow mesenchymal stem cells D1 cells in the present study. D1 cells were divided into two groups: control group and salidroside inducing groups. Control group was cultured with complete culture solution D/F12, while salidroside inducing groups were induced with 100 mg·L -1 salidroside for different time periods (24, 48 and 72 hours). PCR-array assay was used to detect expression of 84 calcium related mRNA, and significantly different genes were chosen to analyse...
June 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29739252/evaluation-of-the-rivastigmine-role-against-botulinum-toxin-a-induced-osteoporosis-in-albino-rats-a-biochemical-histological-and-immunohistochemical-study
#9
D M Ali, W Y Abdelzaher, Smn Abdel-Hafez
The present study aimed to evaluate the role of rivastigmine against the effect of a single unilateral botulinum toxin-A (BTX-A) injection on the bone and bone marrow of adult albino rats 4 weeks after injection. Twenty-four Wistar albino rats were divided into four equal groups: group I, which received distilled water; group II, which received rivastigmine (0.3 mg/kg daily, intraperitoneally for 4 weeks); group III, which received BTX-A (4 IU in 0.2 mL physiological saline) single dose, intramuscularly; and group IV, which received BTX-A + rivastigmine...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29719531/characterization-of-chicken-tumor-necrosis-factor-%C3%AE-a-long-missed-cytokine-in-birds
#10
Franziska Rohde, Benjamin Schusser, Tomáš Hron, Helena Farkašová, Jiří Plachý, Sonja Härtle, Jiří Hejnar, Daniel Elleder, Bernd Kaspers
Tumor necrosis factor-α (TNF-α) is a pleiotropic cytokine playing critical roles in host defense and acute and chronic inflammation. It has been described in fish, amphibians, and mammals but was considered to be absent in the avian genomes. Here, we report on the identification and functional characterization of the avian ortholog. The chicken TNF-α (chTNF-α) is encoded by a highly GC-rich gene, whose product shares with its mammalian counterpart 45% homology in the extracellular part displaying the characteristic TNF homology domain...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29674474/genetic-deletion-of-il-interleukin-19-exacerbates-atherogenesis-in-il19-%C3%A3-ldlr-double-knockout-mice-by-dysregulation-of-mrna-stability-protein-hur-human-antigen-r
#11
Mitali Ray, Khatuna Gabunia, Christine N Vrakas, Allison B Herman, Farah Kako, Sheri E Kelemen, Laurel A Grisanti, Michael V Autieri
OBJECTIVE: To test the hypothesis that loss of IL (interleukin)-19 exacerbates atherosclerosis. APPROACH AND RESULTS: Il19 -/- mice were crossed into Ldlr -/- (low-density lipoprotein receptor knock out) mice. Double knockout (dKO) mice had increased plaque burden in aortic arch and root compared with Ldlr -/- controls after 14 weeks of high-fat diet (HFD). dKO mice injected with 10 ng/g per day rmIL-19 had significantly less plaque compared with controls. qRT-PCR and Western blot analysis revealed dKO mice had increased systemic and intraplaque polarization of T cells and macrophages to proinflammatory Th 1 and M1 phenotypes, and also significantly increased TNF (tumor necrosis factor)-α expression in spleen and aortic arch compared with Ldlr -/- controls...
April 19, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29670467/trail-dependent-resolution-of-pulmonary-fibrosis
#12
David M Habiel, Ana Paula Moreira, Ugur B Ismailoglu, Michael P Dunleavy, Karen A Cavassani, Nico van Rooijen, Ana Lucia Coelho, Cory M Hogaboam
Idiopathic pulmonary fibrosis (IPF) is the most common form of interstitial lung disease characterized by the persistence of activated myofibroblasts resulting in excessive deposition of extracellular matrix proteins and profound tissue remodeling. In the present study, the expression of tumor necrosis factor- (TNF-) related apoptosis-inducing ligand (TRAIL) was key to the resolution of bleomycin-induced pulmonary fibrosis. Both in vivo and in vitro studies demonstrated that Gr-1+ TRAIL+ bone marrow-derived myeloid cells blocked the activation of lung myofibroblasts...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29661104/effect-of-micro-roughening-of-poly-ether-ether-ketone-on-bone-marrow-derived-stem-cell-and-macrophage-responses-and-osseointegration
#13
Sunarso, Akira Tsuchiya, Naoyuki Fukuda, Riki Toita, Kanji Tsuru, Kunio Ishikawa
Poly(ether ether ketone) (PEEK) has emerged as a candidate to replace metal implants because of its satisfactory mechanical properties, radiolucency, and lack of metal allergy. However, PEEK lacks osseointegration ability limiting its clinical applications. To overcome this problem, we prepared PEEK with a micro-rough surface using the sandblast method to modulate its osseointegration property; the sandblast method is simple, cost-effective, and is already applied to clinical metal implants. The surface roughness of the sandblasted PEEK was about 2...
April 16, 2018: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/29621118/bone-marrow-cells-transplant-in-septic-mice-modulates-systemic-inflammatory-response-via-cell-cell-contact
#14
Clara Batista Lorigados, Suely K Kubo Ariga, Thais Martins de Lima, Denise Frediane Barbeiro, Jose Eduardo Krieger, Francisco Garcia Soriano
Sepsis is a dynamic disease, displaying an inflammatory profile that varies over time and for each organ. Controlling the inflammatory response based in targeting a single molecule has been proved useless. We hypothesized that treatment with bone marrow derived mononuclear cells (BMDMC) may be more efficient to modulate the systemic inflammatory response to infection. Adult male Balb/c mice were subjected to cecal ligation and puncture (CLP) or endotoxemia model of experimental sepsis. BMDMC were separated under Ficoll gradient and injected intravenously 1 hour after the procedures...
April 4, 2018: Shock
https://www.readbyqxmd.com/read/29620194/crocin-inhibits-rankl%C3%A2-induced-osteoclastogenesis-by-regulating-jnk-and-nf%C3%A2-%C3%AE%C2%BAb-signaling-pathways
#15
Liping Shi, Suping Zhao, Qian Chen, Youwei Wu, Jian Zhang, Na Li
Receptor activator of nuclear factor‑κB ligand (RANKL), a member of the tumor necrosis factor receptor-ligand family, is a crucial factor involved in osteoclast differentiation. Crocin, a pharmacologically active component of Crocus sativus L., has been reported to attenuate ovariectomy‑induced osteoporosis in rats. However, the molecular mechanism underlying the effect of crocin on osteoclast formation remains to be determined. The present study aimed to investigate the effect of crocin on RANKL‑induced osteoclastogenesis and its underlying molecular mechanism...
March 29, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29619911/early-use-of-etanercept-for-graft-versus-host-disease-after-liver-transplant-the-importance-of-broad-spectrum-infective-prophylaxis
#16
Annalisa Boscolo, Eugenia Menin, Beatrice Zelaschi, Laura Albertoni, Giacomo Zanus, Fabio Baratto
Graft-versus-host-disease after orthotopic liver transplant is a rare and life-threatening complication. The diagnosis is challenging and usually confirmed by chimerism and skin biopsies. The most common cause of death is sepsis (60%), and broad-spectrum antibiotics and antifungal prophylaxis are strongly recommended. We present a case of a 61-year-old man with hepatocellular carcinoma and a previous history of metabolic and alcoholic cirrhosis who underwent orthotopic liver transplant. The immunosuppression regimen consisted of corticosteroids, calcineurin inhibitor, and mammalian target of rapamycin complex 1 inhibitor...
April 4, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29602156/interferon-gamma-in-mobilized-stem-cells-a-possible-prognostic-marker-in-early-post-transplant-management-in-multiple-myeloma
#17
Letícia Navarro Gordan Ferreira Martins, Andrea Akemi Morita, Geise Ellen Broto, Érika Takakura, Suelen Santos da Silva, Fernanda Tomiotto-Pellissier, Ivete Conchon-Costa, Wander Rogério Pavanelli, Carolina Panis, Décio Sabbatini Barbosa
INTRODUCTION: A complex network of cytokines in the bone marrow microenvironment has been implicated as an important factor in the pathogenesis of multiple myeloma (MM). Different cytokines have been studied in MM, both in peripheral blood and/or bone marrow, but there are few data correlating cytokines in leukapheresis product with post-transplant response depth to treatment. MATERIALS AND METHODS: In a retrospective cross-sectional study, levels of tumor necrosis factor alpha (TNF-α), transforming growth factor beta-1 (TGF-β1) and interferon gamma (IFN-γ) in peripheral hematopoietic stem cells/leukapheresis product (PHSC) of patients with MM eligible for transplantation were evaluated...
March 27, 2018: Cytokine
https://www.readbyqxmd.com/read/29587203/inhibitor-of-bruton-s-tyrosine-kinases-pci-32765-decreases-pro-inflammatory-mediators-production-in-high-glucose-induced-macrophages
#18
Zhe Fan, Yan Wang, Xingxin Xu, Yonggui Wu
Accumulating evidence has shown that macrophages play a vital role in development and pathogenesis of diabetic nephropathy (DN) by secreting inflammatory cytokines. Although Bruton's tyrosine kinases (Btk) is a biologically important molecule implicated in immune regulation, the role of Btk in high glucose (HG)-stimulated inflammatory response in macrophages and the mechanism involved need further investigation. In our study, we used bone marrow-derived macrophages (BMMs) to investigate the involvement of Btk on HG-induced inflammatory cytokines expression and to explore the underlying mechanisms...
March 24, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29566772/platelet-lysate-as-a-novel-serum-free-media-supplement-for-the-culture-of-equine-bone-marrow-derived-mesenchymal-stem-cells
#19
Maria C Naskou, Scarlett M Sumner, Anna Chocallo, Hannah Kemelmakher, Merrilee Thoresen, Ian Copland, Jacques Galipeau, John F Peroni
BACKGROUND: Mesenchymal stem cells (MSCs) produced for clinical purposes rely on culture media containing fetal bovine serum (FBS) which is xenogeneic and has the potential to significantly alter the MSC phenotype, rendering these cells immunogenic. As a result of bovine-derived exogenous proteins expressed on the cell surface, MSCs may be recognized by the host immune system as non-self and be rejected. Platelet lysate (PL) may obviate some of these concerns and shows promising results in human medicine as a possible alternative to FBS...
March 22, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29557374/dabrafenib-an-inhibitor-of-rip3-kinase-dependent-necroptosis-reduces-ischemic-brain-injury
#20
Shelly A Cruz, Zhaohong Qin, Alexandre F R Stewart, Hsiao-Huei Chen
Ischemic brain injury triggers neuronal cell death by apoptosis via caspase activation and by necroptosis through activation of the receptor-interacting protein kinases (RIPK) associated with the tumor necrosis factor-alpha (TNF-α)/death receptor. Recent evidence shows RIPK inhibitors are neuroprotective and alleviate ischemic brain injury in a number of animal models, however, most have not yet undergone clinical trials and safety in humans remains in question. Dabrafenib, originally identified as a B-raf inhibitor that is currently used to treat melanoma, was later revealed to be a potent RIPK3 inhibitor at micromolar concentrations...
February 2018: Neural Regeneration Research
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