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https://www.readbyqxmd.com/read/28338177/5-aminolevulinic-acid-photodynamic-therapy-stimulates-local-immunity-in-patients-with-condylomata-acuminata-via-activation-of-t-lymphocytes
#1
J Du, Q Cheng, Z Zhang, J-F Wu, F Li, S-Y Chen, Y-L Wang, X-N Lu, J-H Xu
OBJECTIVE: 5-Aminolevulinic acid photodynamic therapy (5-ALA-PDT) for condylomata acuminate (CA) is effective and safe, but how this treatment affects immune reaction is poorly understood. We aimed to explore the effects of PDT on local immunity in CA. PATIENTS AND METHODS: Immunohistochemical analysis before and after PDT was performed to analyze local changes in the distribution of T lymphocytes, CD123+ plasmacytoid dendritic cells (pDCs) and CD1a+ myeloid DCs...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28321124/combined-inhibition-of-%C3%AE-catenin-and-bcr-abl-synergistically-targets-tyrosine-kinase-inhibitor-resistant-blast-crisis-chronic-myeloid-leukemia-blasts-and-progenitors-in-vitro-and-in-vivo
#2
H Zhou, P Y Mak, H Mu, D H Mak, Z Zeng, J Cortes, Q Liu, M Andreeff, B Z Carter
Tyrosine kinase inhibitor (TKI) resistance and progression to blast crisis (BC), both related to persistent β-catenin activation remain formidable challenges for chronic myeloid leukemia (CML). We observed overexpression of β-catenin in BC-CML stem/progenitor cells, particularly in GMP progenitors, and highest among a novel CD34(+)CD38(+)CD123(hi)Tim-3(hi) subset as determined by CyTOF analysis. Co-culture with mesenchymal stromal cells (MSCs) induced the expression of β-catenin and its target CD44 in CML cells...
March 21, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28321093/successful-treatment-with-biweekly-chop-for-bone-marrow-relapse-of-blastic-plasmacytoid-dendritic-cell-neoplasm
#3
Keiko Ono, Mikiko Ise, Dai Ikebe, Akiyasu Sato, Xiaofei Wang, Takeaki Sugawara, Hideki Tsujimura, Makiko Itami, Kyoya Kumagai
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare and aggressive hematological malignancy derived from precursors of plasmacytoid dendritic cells. The majority of patients initially respond to multi-agent chemotherapy, though most relapse within a year and the prognosis is very poor. We report a 67-year-old man with erythema on the right chest and a nasopharyngeal mass. Histological examination revealed a mass of tumor cells expressing CD4, CD56, and CD123, but neither CD3 nor CD20. He was diagnosed with BPDCN...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28303135/a-human-lin-cd123-cd127-low-population-endowed-with-ilc-features-and-migratory-capabilities-contributes-to-immunopathological-hallmarks-of-psoriasis
#4
Luz María Mora-Velandia, Octavio Castro-Escamilla, Andrés González Méndez, Cristina Aguilar-Flores, Martha Velázquez-Avila, María Isabel Tussié-Luna, Juan Téllez-Sosa, César Maldonado-García, Fermín Jurado-Santacruz, Eduardo Ferat-Osorio, Jesus Martínez-Barnetche, Rosana Pelayo, Laura C Bonifaz
Innate lymphoid cells (ILC) are members of a heterogeneous family with a lymphoid origin that mimics the T helper (Th) cytokine profile. ILC are involved in early effector cytokine-mediated responses during infections in peripheral tissues. ILC also play an important role in chronic skin inflammatory diseases, including psoriasis. Although classical ILC express CD127, it has been recently reported that the presence of non-classical CD127(-) ILC populations and an early ILC precursor (EILP) CD127(low). ILC development has predominately been investigated in mouse models...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28296664/histomorphology-and-immunophenotype-of-eczematous-skin-lesions-revisited-skin-biopsies-are-not-reliable-in-differentiating-allergic-contact-dermatitis-irritant-contact-dermatitis-and-atopic-dermatitis
#5
Verena G Frings, Almut Böer-Auer, Kristine Breuer
Lesions of allergic contact dermatitis (ACD), irritant contact dermatitis (ICD), and atopic dermatitis (AD) share similar clinical features and thus, their diagnosis can be challenging. The aim of this study was to reassess histopathology and immunophenotyping properties to distinguish between ACD, ICD, and AD. Charts of patients with eczema, who had undergone complete routine diagnostic workup (skin biopsies, patch tests, skin prick tests, and respectively or serum IgE levels), were reviewed. Thirty-five skin biopsy specimens of 28 patients (mean age 64 ± 15 years; ♀ = 13 ♂ = 15) with clear diagnosis of ACD (n = 15), ICD (n = 6), or AD (n = 14) were analyzed...
March 10, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28272239/cutaneous-presentation-preceding-acute-monocytic-leukemia-a-care-compliant-article
#6
Xianhua Jin, Fuqiu Li, Xue Li, Wenjing Zhu, Yan Mou, Yang Huang, Huanyu Zhao, Wei Gao, Jianxin Xia
RATIONALE: Cutaneous presentation preceding acute myeloid leukemia (AML) is rare, and the prognosis is poor. PATIENT CONCERNS: We report 4 cases of AML cutis, where skin infiltration precedes any blood or bone marrow evidence of leukemia. We also reviewed 13 cases reported in English and Chinese literature. The 4 cases all presented typical cutaneous lesions without any systemic evidence of leukemia. Histopathological examination found that dense monomorphous cell infiltration involved the dermis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28246194/optimized-depletion-of-chimeric-antigen-receptor-t-cells-in-murine-xenograft-models-of-human-acute-myeloid-leukemia
#7
Sarah K Tasian, Saad S Kenderian, Feng Shen, Marco Ruella, Olga Shestova, Miroslaw Kozlowski, Yong Li, April Schrank-Hacker, Jennifer J D Morrissette, Martin Carroll, Carl H June, Stephan A Grupp, Saar Gill
Others and we previously reported potent anti-leukemia efficacy of CD123-redirected chimeric antigen receptor (CAR) T-cells in preclinical human acute myeloid leukemia (AML) models at cost of severe hematologic toxicity. This observation raises concern for potential myeloablation in patients with AML treated with CD123-redirected CAR T-cells and mandates novel approaches for toxicity mitigation. We hypothesized that CAR T-cell depletion with optimal timing after AML eradication would preserve leukemia remission and allow subsequent hematopoietic stem cell transplantation...
February 28, 2017: Blood
https://www.readbyqxmd.com/read/28245376/-prognostic-significance-of-the-percentage-of-blasts-with-cd34-cd38-low-cd123-phenotype-in-acute-myeloid-leukemias
#8
Li-Li Xiang, Guo-Qiang Qiu, Xiao-Bao Xie, Jian-Nong Cen, Shao-Yan Hu, Wei-Ying Gu
OBJECTIVE: To investigate the percentage of blasts with the CD34(+)/CD38(low/-)/CD123(+) phenotype in de novo acute myeloid leukemia (AML) patients and analyse its correlation with prognosis. METHODS: The percentage of CD34(+)/CD38(low/-)/CD123(+) cells in the blast population of 148 newly diagnosed patients with AML was determined by using flow cytometry and its correlation with complete response, disease-free survival and overall survival were evaluated. RESULTS: The median percentage of CD34(+)/CD38(low/-)/CD123(+) cells in newly diagnosed patients was 2...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28195263/kikuchi-fujimoto-disease-a-clinicopathologic-update
#9
F Pepe, S Disma, C Teodoro, P Pepe, G Magro
Kikuchi-Fujmoto disease (KFD), also known as "histiocytic necrotizing lymphadenitis", is a rare lymphadenitis of unknown origin, but with an excellent prognosis. It is more common in Asia, but isolated cases are also reported in America, Africa and Europe. The disease can have an acute or subacute course, usually develops in 1 to 3 weeks, with spontaneous resolution in 1-4 months. The main clinical sign is cervical lymphadenopathy, especially in the posterior cervical triangle with bulky and painful lymph nodes, usually affecting only one side; rare cases of generalized lymphadenopathy can be seen...
September 2016: Pathologica
https://www.readbyqxmd.com/read/28191591/plasmacytoid-dendritic-cell-proliferations-and-neoplasms-involving-the-bone-marrow-summary-of-the-workshop-cases-submitted-to-the-18th-meeting-of-the-european-association-for-haematopathology-eahp-organized-by-the-european-bone-marrow-working-group-basel-2016
#10
Alexandar Tzankov, Konnie Hebeda, Markus Kremer, Roos Leguit, Attilio Orazi, Jon van der Walt, Umberto Gianelli
Two distinct forms of neoplasms derived from plasmacytoid dendritic cells (PDC) exist: mature PDC proliferations associated with myeloid neoplasms and blastic PDC neoplasms (BPDCN). Ten cases of PDC proliferations and neoplasms in the bone marrow have been submitted to the bone marrow workshop held at the 18th EAHP meeting. Based on observations from the submitted cases, scattered PDC (≤1% of cells) and PDC aggregates (≤10 PDC/HPF) reflect the normal bone marrow composition, while in myelodysplastic syndromes (MDS), there is a propensity for larger/more PDC aggregates (1-5% and 35 PDC/HPF)...
February 12, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28164558/increased-number-of-mast-cells-in-atherosclerotic-lesions-correlates-with-the-presence-of-myeloid-but-not-plasmacytoid-dendritic-cells-as-well-as-pro-inflammatory-t-cells
#11
Ilonka Rohm, Sandra Sattler, Yevgeniya Atiskova, Daniel Kretzschmar, Rudin Pistulli, Marcus Franz, Christian Jung, Gita Mall, Thomas Kronert, Paul C Schulze, Atilla Yilmaz
BACKGROUND: Atherosclerosis is an inflammatory disease of the vessel wall promoted by different immune cells and inflammatory mediators. METHODS: In this study, 26 human plaques and 12 control vessels without atherosclerosis were immunohistochemically stained to analyze the emergence of mast cells dependent on plaque morphology and to correlate mast cell occurrence with the emergence of myeloid as well as plasmacytoid dendritic cells. Also, mast cell emergence was correlated with the number of pro-inflammatory T cells...
December 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28159737/stem-and-progenitor-cell-alterations-in-myelodysplastic-syndromes
#12
Aditi Shastri, Britta Will, Ulrich Steidl, Amit Verma
Recent studies have demonstrated that myelodysplastic syndromes (MDS) arise from a small population of disease initiating hematopoietic stem cells (HSCs) that persist and expand through conventional therapies and are major contributors to disease progression and relapse. MDS stem and progenitor cells are characterized by key founder and driver mutations and are enriched for cytogenetic alterations. Quantitative alterations in stem and progenitor numbers are also seen in a stage specific manner in human MDS samples as well as in murine models of the disease...
February 3, 2017: Blood
https://www.readbyqxmd.com/read/28146632/antibody-targeted-cyclodextrin-based-nanoparticles-for-sirna-delivery-in-the-treatment-of-acute-myeloid-leukemia-physicochemical-characteristics-in-vitro-mechanistic-studies-and-ex-vivo-patient-derived-therapeutic-efficacy
#13
Jianfeng Guo, Eileen G Russell, Raphael Darcy, Thomas G Cotter, Sharon L McKenna, Mary R Cahill, Caitriona M O'Driscoll
Acute myeloid leukemia (AML) is the most common type of acute leukemia in adults and is associated with high relapse rates. It is known that leukemia stem cells (LSCs), a very small subpopulation of the total number of leukemic cells, maintain the leukemia phenotype (∼80-90% of AML remain the same as at first diagnosis), display chemotherapy resistance, and contribute to disease regeneration. Therefore, targeting LSCs could control the relapse of AML. Small interfering RNA (siRNA), an effector of the RNA interference (RNAi) pathway, can selectively downregulate any gene implicated in the pathology of disease, presenting great potential for treatment of AML...
February 14, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28096272/anti-leukemia-efficacy-and-mechanisms-of-action-of-sl-101-a-novel-anti-cd123-antibody-conjugate-in-acute-myeloid-leukemia
#14
Lina Han, Jeffrey L Jorgensen, Christopher Brooks, Ce Shi, Qi Zhang, Graciela M Nogueras González, Antonio Cavazos, Rongqing Pan, Hong Mu, Sa Wang, Jin Zhou, Gheath Alatrash, Stefan O Ciurea, Michael Rettig, John F DiPersio, Jorge E Cortes, Xuelin Huang, Hagop Kantarjian, Michael Andreeff, Farhad Ravandi-Kashani, Marina Konopleva
PURPOSE: The persistence of leukemia stem cells (LSC)-containing cells after induction therapy may contribute to minimal residual disease (MRD) and relapse in acute myeloid leukemia (AML). We investigated the clinical relevance of CD34+CD123+ LSC-containing cells and anti-leukemia potency of a novel antibody-conjugate SL-101 in targeting CD123+ LSCs. Experimental Methods and Results: In a retrospective study on 86 newly diagnosed AML patients, we demonstrated that a higher proportion of CD34+CD123+ LSC-containing cells in remission was associated with persistent MRD, and predicted shorter relapse-free survival in patients with poor-risk cytogenetics...
January 17, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27917176/graft-immune-cell-composition-associates-with-clinical-outcome-of-allogeneic-hematopoietic-stem-cell-transplantation-in-patients-with-aml
#15
Ulla Impola, Antti Larjo, Urpu Salmenniemi, Mervi Putkonen, Maija Itälä-Remes, Jukka Partanen
Complications of allogeneic hematopoietic stem cell transplantation (HSCT) have been attributed to immune cells transferred into the patient with the graft. However, a detailed immune cell composition of the graft is usually not evaluated. In the present study, we determined the level of variation in the composition of immune cells between clinical HSCT grafts and whether this variation is associated with clinical outcome. Sizes of major immune cell populations in 50 clinical grafts from a single HSCT Centre were analyzed using flow cytometry...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27913457/treatment-of-blastic-plasmacytoid-dendritic-cell-neoplasm
#16
Jill M Sullivan, David A Rizzieri
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare myeloid malignancy with no defined standard of care. BPDCN presents most commonly with skin lesions with or without extramedullary organ involvement before leukemic dissemination. As a result of its clinical ambiguity, differentiating BPDCN from benign skin lesions or those of acute myeloid leukemia with leukemia cutis is challenging. BPDCN is most easily defined by the phenotype CD4(+)CD56(+)CD123(+)lineage(-)MPO(-), although many patients will present with variable expression of CD4, CD56, or alternate plasmacytoid markers, which compounds the difficulty in differentiating BPDCN from other myeloid or lymphoid malignancies...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27908880/an-anti-cd3-anti-cll-1-bispecific-antibody-for-the-treatment-of-acute-myeloid-leukemia
#17
Steven R Leong, Siddharth Sukumaran, Maria Hristopoulos, Klara Totpal, Shannon Stainton, Elizabeth Lu, Alfred Wong, Lucinda Tam, Robert Newman, Brian R Vuillemenot, Diego Ellerman, Chen Gu, Mary Mathieu, Mark S Dennis, Allen Nguyen, Bing Zheng, Crystal Zhang, Genee Lee, Yu-Waye Chu, Rodney A Prell, Kedan Lin, Steven T Laing, Andrew G Polson
Acute myeloid leukemia (AML) is a major unmet medical need. Most patients have poor long-term survival, and treatment has not significantly changed in 40 years. Recently, bispecific antibodies that redirect the cytotoxic activity of effector T cells by binding to CD3, the signaling component of the T-cell receptor, and a tumor target have shown clinical activity. Notably, blinatumomab is approved to treat relapsed/refractory acute lymphoid leukemia. Here we describe the design, discovery, pharmacologic activity, pharmacokinetics, and safety of a CD3 T cell-dependent bispecific (TDB) full-length human IgG1 therapeutic antibody targeting CLL-1 that could potentially be used in humans to treat AML...
February 2, 2017: Blood
https://www.readbyqxmd.com/read/27881669/aerobic-exercise-in-humans-mobilizes-hscs-in-an-intensity-dependent-manner
#18
Jeff M Baker, Joshua P Nederveen, Gianni Parise
Hematopoietic stem and progenitor cells are necessary to maintain, repair, and reconstitute the hematopoietic blood cell system. Mobilization of these cells from bone marrow to blood can be greatly increased under certain conditions, one such being exercise. The purpose of this study was to identify the importance of exercise intensity in hematopoietic mobilization, to better understand the mobilization kinetics postexercise, and to determine if exercise is capable of mobilizing several specific populations of hematopoietic cells that have clinical relevance in a transplant setting...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27858122/increased-cd14-and-decreased-cd14-populations-of-monocytes-48%C3%A2-h-after-zolendronic-acid-infusion-in-breast-cancer-patients
#19
A Kyrgidis, M P Yavropoulou, R Lagoudaki, C Andreadis, K Antoniades, D Kouvelas
It has been proposed that bisphosphonates cause osteonecrosis of the jaws through impairment of the monocyte population function and proliferation. Such changes have been confirmed in jaw tissues, ex vivo. In this clinical study, we report for the first time a similar pattern of changes in peripheral blood monocytes. INTRODUCTION: The aim of this study is to examine the effect of zolendronic acid administration in the peripheral blood white cell population, seeking a plausible pathophysiological link between bisphosphonates and osteonecrosis of the jaw...
November 17, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27837108/characterization-and-transcriptomic-analysis-of-porcine-blood-conventional-and-plasmacytoid-dendritic-cells-reveals-striking-species-specific-differences
#20
Gael Auray, Irene Keller, Sylvie Python, Markus Gerber, Remy Bruggmann, Nicolas Ruggli, Artur Summerfield
Porcine dendritic cells (DCs) are relatively well characterized, but a clear-cut identification of all DC subsets combined with full transcriptional profiling was lacking, preventing an unbiased insight into the functional specializations of DC subsets. Using a large panel of Abs in multicolor flow cytometry, cell sorting, and RNA sequencing we identified and characterized the porcine equivalent of conventional DCs (cDC) 1 and cDC2 as well as plasmacytoid DCs (pDCs) in the peripheral blood of pigs. We demonstrate that cDC1 are CD135(+)CD14(-)CD172a(low)CADM1(+)wCD11R1(+) cells, cDC2 are CD135(+)CD14(-)CD172a(+)CADM1(+)CD115(+)wCD11R1(+)CD1(+) cells and pDCs are CD4(+)CD135(+)CD172a(+)CD123(+)CD303(+) cells...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
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