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Pulmonary stem cell

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https://www.readbyqxmd.com/read/28637621/gata2-deficiency-and-related-myeloid-neoplasms
#1
Marcin W Wlodarski, Matthew Collin, Marshall S Horwitz
The GATA2 gene codes for a hematopoietic transcription factor that through its two zinc fingers (ZF) can occupy GATA-DNA motifs in a countless number of genes. It is crucial for the proliferation and maintenance of hematopoietic stem cells. During the past 5 years, germline heterozygous mutations in GATA2 were reported in several hundred patients with various phenotypes ranging from mild cytopenia to severe immunodeficiency involving B cells, natural killer cells, CD4(+) cells, monocytes and dendritic cells (MonoMAC/DCML), and myeloid neoplasia...
April 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28632754/permissive-hypercapnia-for-severe-acute-respiratory-distress-syndrome-in-immunocompromised-children-a-single-center-experience
#2
Hans Fuchs, Nicola Rossmann, Manuel B Schmid, Manfred Hoenig, Ulrich Thome, Benjamin Mayer, Daniel Klotz, Helmut D Hummler
BACKGROUND: Controlled hypoventilation while accepting hypercapnia has been advocated to reduce ventilator-induced lung injury. The aim of the study was to analyze outcomes of a cohort of immunocompromised children with acute respiratory distress syndrome (ARDS) ventilated with a strategy of stepwise increasing PCO2 targets up to 140 mm Hg. METHODS: Retrospective analysis of outcomes of a cohort of children with oncologic disease or after stem cell transplantation and severe respiratory failure in comparison with a historical control cohort...
2017: PloS One
https://www.readbyqxmd.com/read/28621167/interview-with-darrell-kotton
#3
Darrell Kotton
Dr Kotton is the David Seldin Professor of Medicine and the founding Director of the Center for Regenerative Medicine of Boston University and Boston Medical Center. He conducts basic stem cell research as an NIH-funded Principle Investigator in the Kotton Laboratory (focused on stem cell biology and gene therapy related to lung injury and repair). In addition, he attends in the Medical Intensive Care Unit, the Pulmonary Consultation Service, the Alpha-1 Center and the Pulmonary Outpatient Clinic, all at Boston Medical Center...
June 16, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28614794/an-activated-th17-prone-t-cell-subset-involved-in-chronic-graft-versus-host-disease-sensitive-to-pharmacological-inhibition
#4
Edouard Forcade, Katelyn Paz, Ryan Flynn, Brad Griesenauer, Tohti Amet, Wei Li, Liangyi Liu, Giorgos Bakoyannis, Di Jiang, Hong Wei Chu, Mercedes Lobera, Jianfei Yang, David S Wilkes, Jing Du, Kate Gartlan, Geoffrey R Hill, Kelli Pa MacDonald, Eduardo L Espada, Patrick Blanco, Jonathan S Serody, John Koreth, Corey S Cutler, Joseph H Antin, Robert J Soiffer, Jerome Ritz, Sophie Paczesny, Bruce R Blazar
Chronic graft-versus-host disease (cGvHD) remains a major complication of allogeneic stem cell transplantation requiring novel therapies. CD146 and CCR5 are expressed by activated T cells and associated with increased T cell migration capacity and Th17 polarization. We performed a multiparametric flow cytometry analysis in a cohort of 40 HSCT patients together with a cGvHD murine model to understand the role of CD146-expressing subsets. We observed an increased frequency of CD146+ CD4 T cells in the 20 patients with active cGvHD with enhanced RORγt expression...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28607909/putting-skin-in-the-game-dermis-derived-stem-cells-provide-insight-into-familial-pulmonary-hypertension
#5
EDITORIAL
James P Maloney
No abstract text is available yet for this article.
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28596276/comparing-the-cytotoxicity-of-electronic-cigarette-fluids-aerosols-and-solvents
#6
Rachel Z Behar, Yuhuan Wang, Prue Talbot
BACKGROUND: As thousands of electronic cigarette (e-cigarette) refill fluids continue to be formulated and distributed, there is a growing need to understand the cytotoxicity of the flavouring chemicals and solvents used in these products to ensure they are safe. The purpose of this study was to compare the cytotoxicity of e-cigarette refill fluids/solvents and their corresponding aerosols using in vitro cultured cells. METHODS: E-cigarette refill fluids and do-it-yourself products were screened in liquid and aerosol form for cytotoxicity using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay...
June 8, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28595637/exosome-mir-371b-5p-promotes-proliferation-of-lung-alveolar-progenitor-type-ii-cells-by-using-pten-to-orchestrate-the-pi3k-akt-signaling
#7
Yuan Quan, Zhaohua Wang, Ling Gong, Xinmiao Peng, Melissa A Richard, Junlan Zhang, Myriam Fornage, Joseph L Alcorn, Dachun Wang
BACKGROUND: Pathways directing endogenous stem/progenitor cells to restore normal architecture and function of damaged/diseased lungs remain underexplored. Published data have revealed that alveolar progenitor type II cell (ATIIC)-derived signaling promotes re-epithelialization of injured alveoli, yet the underlying mechanism is unknown. Here we aim to define the role of ATIIC-derived exosome miRNA signaling in controlling ATIIC-specific proliferation or differentiation in response to injury...
June 8, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28586311/mesenchymal-stem-cells-in-idiopathic-pulmonary-fibrosis
#8
REVIEW
Xiaohong Li, Shaojie Yue, Ziqiang Luo
Idiopathic pulmonary fibrosis (IPF) is a major cause of respiratory failure in critically ill patients and common outcome of various lung interstitial diseases. Its mortality remains high, and no effective pharmacotherapy, in addition to artificial ventilation and transplantation, exists. As such, the administration of mesenchymal stem or stromal cells (MSCs) is currently investigated as a new therapeutic method for pulmonary fibrosis. Clinical trials on MSC-based therapy as a potential treatment for lung injury and fibrosis are also performed...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28577122/successful-treatment-of-pulmonary-mucormycosis-caused-by-cunninghamella-bertholletiae-with-high-dose-liposomal-amphotericin-b-10%C3%A2-mg-kg-day-followed-by-a-lobectomy-in-cord-blood-transplant-recipients
#9
Hikari Ota, Hisashi Yamamoto, Muneyoshi Kimura, Hideki Araoka, Takeshi Fujii, Takashi Umeyama, Hideaki Ohno, Yoshitsugu Miyazaki, Daisuke Kaji, Yuki Taya, Aya Nishida, Kazuya Ishiwata, Masanori Tsuji, Shinsuke Takagi, Yuki Asano-Mori, Go Yamamoto, Naoyuki Uchida, Koji Izutsu, Kazuhiro Masuoka, Atsushi Wake, Akiko Yoneyama, Shigeyoshi Makino, Shuichi Taniguchi
Infection caused by Cunninghamella bertholletiae carries one of the highest mortality rates among mucormycosis, and there are no reported cases that survived from the infection in allogeneic hematopoietic stem cell transplantation recipients occurring before neutrophil engraftment. Here, we present two cases of pulmonary mucormycosis caused by C. bertholletiae occurring before neutrophil engraftment after cord blood transplantation. Both were successfully treated with high-dose liposomal amphotericin B (10 mg/kg/day) combined with micafungin, which was then followed by neutrophil recovery, reduction in immunosuppressive agents, and a subsequent lobectomy...
June 2, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28576407/rp5063-a-novel-multimodal-serotonin-receptor-modulator-prevents-sugen-5416-hypoxia-induced-pulmonary-arterial-hypertension-in-rats
#10
Laxminarayan Bhat, Jon Hawkinson, Marc Cantillon, Dasharatha G Reddy, Seema R Bhat, Charles E Laurent, Annie Bouchard, Marzena Biernat, Dany Salvail
RP5063, a multimodal dopamine (DA) and serotonin (5-HT) modulator with high affinity for DA2/3/4 and 5-HT2A/2B/7 receptors and moderate affinity for SERT, is a novel therapeutic of special interest in the treatment of pulmonary arterial hypertension (PAH). Evidence indicates that therapeutics targeting the 5-HT2A/2B receptors can influence the pathogenesis of PAH. However, the therapeutic effect of RP5063 in humans has yet to be investigated. A Sugen 5416-hypoxia (SuHx)-induced PAH model was used to evaluate twice-daily (b...
May 31, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28565787/clinical-observation-of-umbilical-cord-mesenchymal-stem-cell-treatment-of-severe-idiopathic-pulmonary-fibrosis-a-case-report
#11
Chunyu Zhang, Xiaoguang Yin, Jinghan Zhang, Qiang Ao, Yongquan Gu, Ying Liu
Idiopathic pulmonary fibrosis (IPF) is a degenerative disease characterized by fibrosis. Cell therapy has been considered within the therapeutic options for IPF. In this study, we explored the potential benefits of human umbilical cord-derived mesenchymal stem cell (HUC-MSC) intravenous infusion in the management of IPF. We describe a case of a 56-year-old man with IPF who was receiving long-term oxygen therapy (LTOT). The patient underwent HUC-MSC intravenous infusion and was followed up for 12 months. Clinical and motor tests, as well as questionnaires assessing quality of life, were performed prior to and following the transplantation...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28554316/beta-hydroxy-beta-methyl-butyrate-hmb-from-experimental-data-to-clinical-evidence-in-sarcopenia
#12
Alfonso J Cruz-Jentoft
β-hydroxy-β-methylbutyrate (HMB) is a metabolite derived from leucine and its ketoacid alpha-ketoisocaproate. Leucine has a role in regulating protein synthesis in muscle cells, and HMB seems to be a key active metabolite in such regulation. HMB has been shown to modulate muscle protein degradation by inhibiting the ubiquitin-proteasome proteolytic pathway, to up-regulate protein synthesis via the mTOR pathway, and to stabilize cell membranes via the rate limiting enzyme to cholesterol synthesis HMG- coenzyme A reductase...
May 28, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/28550179/cyp2c44-gene-disruption-is-associated-with-increased-hematopoietic-stem-cells-implication-in-chronic-hypoxia-induced-pulmonary-hypertension
#13
Ryota Hashimoto, Sachindra Raj Joshi, Houli Jiang, Jorge H Capdevila, Ivan F McMurtry, Michal Laniado Schwartzman, Sachin A Gupte
We have recently demonstrated that disruption of the murine cytochrome P450 2c44 gene exacerbates chronic hypoxia-induced pulmonary artery remodeling and hypertension in mice. Subsequently, we serendipitously found that Cyp2c44 gene disruption also increases hematopoietic stem cell (HSC) number in bone marrow and blood. Therefore, the objective of this study was to investigate whether Cyp2c44 disruption regulates HSC phenotype and whether increases in differentiated HSCs contribute to chronic hypoxia-induced remodeling of pulmonary arteries...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28546377/respiratory-care-considerations-in-the-childhood-cancer-patient
#14
Lama Elbahlawan, K Jason Rains, Dennis C Stokes
This article reviews the common pulmonary complications seen in the pediatric oncology population and our approach to diagnosis, management, and therapy considerations in this specialized population, including patients receiving chemotherapy, radiation, and hematopoietic stem cell transplantation. Although infections cause the most significant complications in this population, non-infectious complications, including acute lung injury from chemotherapy or radiation, idiopathic interstitial pneumonia, diffuse alveolar hemorrhage, bronchiolitis obliterans, and cryptogenic organizing pneumonia, also occur commonly...
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28534140/protective-effects-of-neural-crest-derived-stem-cell-conditioned-media-against-ischemia-reperfusion-induced-lung-injury-in-rats
#15
Chung-Kan Peng, Shu-Yu Wu, Shih-En Tang, Min-Hui Li, Shih-Shiuan Lin, Shi-Jye Chu, Kun-Lun Huang
Current treatments for ischemia-reperfusion (IR)-induced acute lung injury are limited. Mesenchymal stem cell-conditioned medium (CM) has been reported to attenuate lung injury. Neural crest stem cells (NCSCs), a type of multipotent stem cells, are more easily obtained than mesenchymal stem cells. We hypothesize that NCSC-CM has anti-inflammatory properties that could protect against IR-induced lung injury in rats. In this study, NCSC-CM was derived from rat NCSCs. Typical acute lung injury was induced by 30-min ischemia followed by 90-min reperfusion in adult male Sprague-Dawley rats...
May 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28530671/cardiopulmonary-assessment-of-patients-with-systemic-sclerosis-for-hematopoietic-stem-cell-transplantation-recommendations-from-the-european-society-for-blood-and-marrow-transplantation-autoimmune-diseases-working-party-and-collaborating-partners
#16
REVIEW
D Farge, R K Burt, M-C Oliveira, E Mousseaux, M Rovira, Z Marjanovic, J de Vries-Bouwstra, N Del Papa, R Saccardi, S J Shah, D C Lee, C Denton, T Alexander, D G Kiely, J A Snowden
Systemic sclerosis (SSc) is a rare disabling autoimmune disease with a similar mortality to many cancers. Two randomized controlled trials of autologous hematopoietic stem cell transplantation (AHSCT) for SSc have shown significant improvement in organ function, quality of life and long-term survival compared to standard therapy. However, transplant-related mortality (TRM) ranged from 3-10% in patients undergoing HSCT. In SSc, the main cause of non-transplant and TRM is cardiac related. We therefore updated the previously published guidelines for cardiac evaluation, which should be performed in dedicated centers with expertize in HSCT for SSc...
May 22, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28529637/role-of-the-cxcl8-cxcr1-2-axis-in-cancer-and-inflammatory-diseases
#17
REVIEW
Helen Ha, Bikash Debnath, Nouri Neamati
The chemokine receptors CXCR1/2 and their ligand CXCL8 are essential for the activation and trafficking of inflammatory mediators as well as tumor progression and metastasis. The CXCL8-CXCR1/2 signaling axis is involved in the pathogenesis of several diseases including chronic obstructive pulmonary diseases (COPD), asthma, cystic fibrosis and cancer. Interaction between CXCL8 secreted by select cancer cells and CXCR1/2 in the tumor microenvironment is critical for cancer progression and metastasis. The CXCL8-CXCR1/2 axis may play an important role in tumor progression and metastasis by regulating cancer stem cell (CSC) proliferation and self-renewal...
2017: Theranostics
https://www.readbyqxmd.com/read/28529586/immunohistochemical-analysis-of-nanog-expression-and-epithelial-mesenchymal-transition-in-pulmonary-sarcomatoid-carcinoma
#18
Takeshi Tamaki, Toshiki Shimizu, Maiko Niki, Michiomi Shimizu, Tohru Nishizawa, Shosaku Nomura
Pulmonary sarcomatoid carcinomas (PSCs) are defined as a group of poorly differentiated non-small cell lung cancers that demonstrate sarcoma-like differentiation. The mechanism of mesenchymal differentiation in PSC is epithelial-mesenchymal transition (EMT). The expression of homeobox protein NANOG (NANOG), which regulates the pluripotency of embryonic stem cells, is associated with the EMT process. Therefore, the present study aimed to assess the expression level of NANOG and the status of the EMT process in PSC...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28507545/clinical-and-molecular-heterogeneity-of-rtel1-deficiency
#19
Carsten Speckmann, Sushree Sangita Sahoo, Marta Rizzi, Shinsuke Hirabayashi, Axel Karow, Nina Kathrin Serwas, Marc Hoemberg, Natalja Damatova, Detlev Schindler, Jean-Baptiste Vannier, Simon J Boulton, Ulrich Pannicke, Gudrun Göhring, Kathrin Thomay, J J Verdu-Amoros, Holger Hauch, Wilhelm Woessmann, Gabriele Escherich, Eckart Laack, Liliana Rindle, Maximilian Seidl, Anne Rensing-Ehl, Ekkehart Lausch, Christine Jandrasits, Brigitte Strahm, Klaus Schwarz, Stephan R Ehl, Charlotte Niemeyer, Kaan Boztug, Marcin W Wlodarski
Typical features of dyskeratosis congenita (DC) resulting from excessive telomere shortening include bone marrow failure (BMF), mucosal fragility, and pulmonary or liver fibrosis. In more severe cases, immune deficiency and recurring infections can add to disease severity. RTEL1 deficiency has recently been described as a major genetic etiology, but the molecular basis and clinical consequences of RTEL1-associated DC are incompletely characterized. We report our observations in a cohort of six patients: five with novel biallelic RTEL1 mutations p...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28502938/successful-treatment-of-catastrophic-antiphospholipid-antibody-syndrome-associated-with-malt-lymphoma-by-autologous-hematopoietic-stem-cell-transplantation
#20
Satoko Oka, Kazuo Ono, Masaharu Nohgawa
A 37-year-old woman with extranodal marginal-zone lymphoma was admitted with a fever, hemiplegia, and severe dyspnea after chemotherapy. Catastrophic antiphospholipid antibody syndrome (CAPS) was suspected based on the histopathological confirmation of small-pulmonary vessel occlusion, evidence of the involvement of three organs, and elevated lupus anticoagulant assay results in a short time span. The patient responded to the initial treatment. One month later, the CAPS and lymphoma relapsed, and the patient underwent autologous hematopoietic stem cell transplantation...
2017: Internal Medicine
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