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https://www.readbyqxmd.com/read/28423487/ipilimumab-treatment-decreases-monocytic-mdscs-and-increases-cd8-effector-memory-t-cells-in-long-term-survivors-with-advanced-melanoma
#1
Yago Pico de Coaña, Maria Wolodarski, Isabel Poschke, Yuya Yoshimoto, Yuan Yang, Maria Nyström, Ulrika Edbäck, Suzanne Eghyazi Brage, Andreas Lundqvist, Giuseppe V Masucci, Johan Hansson, Rolf Kiessling
Ipilimumab has revolutionized malignant melanoma therapy, but a better understanding of the mechanisms behind treatment response and adverse effects is needed. In this work, the immune system of ipilimumab treated patients was monitored to investigate potential mechanisms of action that may correlate with treatment outcome. Blood samples from 43 advanced melanoma patients were taken before, during and at the end of treatment. Hematological parameters were measured and flow cytometry analysis was performed in fresh samples within two hours of sample collection...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28422403/blood-chimerism-in-dizygotic-monochorionic-twins-during-five-years-observation
#2
Morten Hanefeld Dziegiel, Morten Høgh Hansen, Sofie Haedersdal, Angela Natalie Barrett, Klaus Rieneck, Katharina Maria Main, Anne Todsen Hansen, Frederik Banch Clausen
Dizygotic monochorionic twin pregnancies can result in blood chimerism due to in utero twin-to-twin exchange of stem cells. In this case, we examined the proportion of allogeneic red blood cells (RBCs) by flow cytometry and the proportion of allogeneic nucleated cells by digital PCR at seven months and again at five years. We found an increase in the proportion of allogeneic cells from 63% to 89% in one twin, and a similar increase in autologous cells in the other twin from 57% to 84%. A paradigm for stem cell therapy could be modelled on this case: induction of tolerance and chimerism by antenatal transfusion of donor stem cells...
April 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28421831/a-novel-automated-slide-based-technology-for-visualization-counting-and-characterization-of-the-formed-elements-of-blood-a-proof-of-concept-study
#3
James W Winkelman, Milenko J Tanasijevic, David J Zahniser
CONTEXT: - A novel automated slide-based approach to the complete blood count and white blood cell differential count is introduced. OBJECTIVE: - To present proof of concept for an image-based approach to complete blood count, based on a new slide preparation technique. A preliminary data comparison with the current flow-based technology is shown. DESIGN: - A prototype instrument uses a proprietary method and technology to deposit a precise volume of undiluted peripheral whole blood in a monolayer onto a glass microscope slide so that every cell can be distinguished, counted, and imaged...
April 19, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28416840/-b7-h3-silencing-inhibits-human-hematological-malignancy-xenograft-tumor-tumorigenesis-and-metastasis-in-nude-mice
#4
X X Yan, W Zhang, J Wang, X Y Ke
OBJECTIVE: To investigate the effect and mechanism of targeted B7-H3 gene silencing on the tumorigenesis and metastasis of human hematological malignancy xenograft tumor in nude mice. METHODS: Real-time fluorogentic quantitative PCR (qPCR) and flow cytometry (FCM) were used to detect the expression of B7-H3 in 13 strains of malignant hematologic cells. Then, U937, Maver and Z138 cells which expressed high level of B7-H3 were screened out. Targeted B7-H3 knockdown in U937, Maver and Z138 was performed by lentivirus transduction and the effect of B7-H3 silencing in stable cell lines was tested by qPCR and FCM...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28415571/increased-b-cell-activation-is-present-in-jak2v617f-mutated-calr-mutated-and-triple-negative-essential-thrombocythemia
#5
Ken-Hong Lim, Caleb Gon-Shen Chen, Yu-Cheng Chang, Yi-Hao Chiang, Chen-Wei Kao, Wei-Ting Wang, Chiao-Yi Chang, Ling Huang, Ching-Sung Lin, Chun-Chia Cheng, Hung-I Cheng, Nai-Wen Su, Johnson Lin, Yi-Fang Chang, Ming-Chih Chang, Ruey-Kuen Hsieh, Huan-Chau Lin, Yuan-Yeh Kuo
Essential thrombocythemia (ET) is a BCL-ABL1-negative myeloproliferative neoplasm. We have reported that increased activated B cells can facilitate platelet production mediated by cytokines regardless JAK2 mutational status in ET. Recently, calreticulin (CALR) mutations were discovered in ~30% JAK2/MPL-unmutated ET and primary myelofibrosis. Here we sought to screen for CALR mutations and to evaluate B cell immune profiles in a cohort of adult Taiwanese ET patients. B cell populations, granulocytes/monocytes membrane-bound B cell-activating factor (mBAFF) levels, B cells toll-like receptor 4 (TLR4) expression and intracellular levels of interleukin (IL)-1β/IL-6 and the expression of CD69, CD80, and CD86 were quantified by flow cytometry...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28409645/evaluation-of-platelet-function-in-thrombocytopenia
#6
Mette Tiedemann Skipper, Peter Rubak, Jesper Stentoft, Anne-Mette Hvas, Ole Halfdan Larsen
Whole blood aggregometry is a functional assay for determination of platelet function. Until now, whole blood aggregometry has not been considered feasible at low platelet counts. Hence, the objectives of the present study were to explore platelet function in thrombocytopenia using a novel index of impedance aggregometry adjusted for platelet count and evaluate the association to platelet function assessed by flow cytometry. Hirudin anticoagulated blood was collected from 20 healthy volunteers, 20 patients with primary immune thrombocytopenia (ITP), and 17 hematological cancer patients...
April 14, 2017: Platelets
https://www.readbyqxmd.com/read/28409295/metal-chelator-tpen-selectively-induces-apoptosis-in-k562-cells-through-reactive-oxygen-species-signaling-mechanism-implications-for-chronic-myeloid-leukemia
#7
Luisa Rojas-Valencia, Carlos Velez-Pardo, Marlene Jimenez-Del-Rio
Chronic myeloid leukemia (CML) is a hematologic disorder characterized by the constitutive expression of BCR-ABL tyrosine kinase. Although successful implementation of tyrosine kinase inhibitors for the treatment of CML remain a traditional choice for molecularly targeted therapy, some patients present primary or secondary resistance to such therapy. Therefore, alternative therapeutic strategies are required to treat resistant CML cells. Accordingly, new anti-proliferative and/or pro-apoptotic compounds would be needed for clinical treatment...
April 13, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28409040/a-case-of-blastic-plasmacytoid-dendritic-cell-neoplasm-extensively-studied-by-flow-cytometry-and-immunohistochemistry
#8
Martina Pennisi, Clara Cesana, Micol Giulia Cittone, Laura Bandiera, Barbara Scarpati, Valentina Mancini, Silvia Soriani, Silvio Veronese, Mauro Truini, Silvano Rossini, Roberto Cairoli
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare hematologic malignancy with aggressive clinical course and poor prognosis. Diagnosis is based on detection of CD4(+) CD56(+), CD123(high), TCL-1(+), and blood dendritic cell antigen-2/CD303(+) blasts, together with the absence of lineage specific antigens on tumour cells. In this report we present a case of BPDCN presenting with extramedullary and bone marrow involvement, extensively studied by flow cytometry and immunohistochemistry, who achieved complete remission after acute lymphoblastic leukemia like chemotherapy and allogeneic hematopoietic stem cell transplantation...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28404756/infusion-compatible-antibiotic-formulations-for-rapid-administration-to-improve-outcomes-in-cancer-outpatients-with-severe-sepsis-and-septic-shock-the-sepsis-stat-pack
#9
Jason D Goldman, Amelia Gallaher, Rupali Jain, Zach Stednick, Manoj Menon, Michael J Boeckh, Paul S Pottinger, Stephen M Schwartz, Corey Casper
Background: Patients with cancer are at high risk for severe sepsis and septic shock (SS/SSh), and a delay in receiving effective antibiotics is strongly associated with mortality. Delays are due to logistics of clinic flow and drug delivery. In an era of increasing antimicrobial resistance, combination therapy may be superior to monotherapy for patients with SS/SSh. Patients and Methods: At the Seattle Cancer Care Alliance, we implemented the Sepsis STAT Pack (SSP) program to simplify timely and effective provision of empiric antibiotics and other resuscitative care to outpatients with cancer with suspected SS/SSh before hospitalization...
April 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28399723/germline-heterozygous-variants-in-genes-associated-with-familial-hemophagocytic-lymphohistiocytosis-as-a-cause-of-increased-bleeding
#10
Marcus Fager Ferrari, Eva Leinoe, Maria Rossing, Eva Norström, Karin Strandberg, Tobias Steen Sejersen, Klaus Qvortrup, Eva Zetterberg
Familial hemophagocytic lymphohistiocytosis (FHL) is caused by biallelic variants in genes regulating granule secretion in cytotoxic lymphocytes. In FHL3-5, the affected genes UNC13D, STX11 and STXBP2 have further been shown to regulate the secretion of platelet granules, giving rise to compromised platelet function. Therefore, we aimed to investigate platelet degranulation in patients heterozygous for variants in UNC13D, STX11 and STXBP2. During the work-up of patients referred to the Coagulation Unit, Skåne University Hospital, Malmö, Sweden and the Department of Hematology, Rigshospitalet, Copenhagen, Denmark due to bleeding tendencies, 12 patients harboring heterozygous variants in UNC13D, STX11 or STXBP2 were identified using targeted whole exome sequencing...
April 11, 2017: Platelets
https://www.readbyqxmd.com/read/28397483/efficiency-of-leukocyte-differential-using-flow-cytometry-with-cytodiff-in-different-workflows
#11
Chenxue Qu, Jianzhong Wang, Chengwei Pu, Ying Xing, Ke Shang, Ning Dong, Xiufeng Li
BACKGROUND: To set up the review criteria for flow cytometry with CytoDiff (FCC) and evaluate the efficiency of different workflows using combinations of FCC with a hematology analyzer and microscopy. METHODS: Leucocyte differentials of the samples from 995 clinical specimens and 278 specimens from healthy donors were analyzed using a hematology analyzer, FCC, and microscopy. RESULTS: The correlations between the hematology analyzer, FCC, and microscopy were good for neutrophils, lymphocytes, and monocytes, but not in the case of basophils (r = 0...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28395431/-nix-mediated-mitochondrial-autophagy-in-pathogenesis-of-myelodysplastic-syndrome-anemia
#12
L Y Yang, N B Cui, H Q Wang, R Fu, W Qu, E B Ruan, X M Wang, G J Wang, Y H Wu, H Liu, J Song, J Guan, L M Xing, L J Li, H J Jiang, H Liu, Y H Wang, C Y Liu, W Zhang, Z H Shao
Objective: To investigate the change of NIX level of bone marrow nucleated red blood cells in anemia patients with myelodysplastic syndromes (MDS), to explore the significance of NIX-mediated mitochondrial autophagy in the pathogenesis of MDS anemia. Methods: A total of 54 patients with MDS diagnosed in the Department of Hematology of General Hospital, Tianjin Medical University from July 2015 to July 2016 were enrolled into the MDS group, 33 cases of immune thrombocytopenia or idiopathic leukopenia as controls...
April 11, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28394090/analysis-of-platelet-derived-extracellular-vesicles-in-plateletpheresis-concentrates-a-multicenter-study
#13
Anne Black, Evelyn Orsó, Reinhard Kelsch, Melanie Pereira, Julian Kamhieh-Milz, Abdulgabar Salama, Michael B Fischer, Eduardo Meyer, Beat M Frey, Gerd Schmitz
BACKGROUND: Routine quantification of platelet-derived extracellular vesicles (PL-EVs) may be useful in the quality control (QC) of platelet concentrates (PCs). The aim of this multicenter study was to establish and validate a consensus protocol for the standardized PL-EV quantification using conventional flow cytometers. STUDY DESIGN AMD METHODS: Eighty-six PCs were investigated in five blood transfusion centers (A-E) on Days 0 and 5. The centers used different apheresis instruments: Trima Accel (n = 56) and/or Amicus (n = 30)...
April 10, 2017: Transfusion
https://www.readbyqxmd.com/read/28385078/paris-polyphylla-suppresses-proliferation-and-vasculogenic-mimicry-of-human-osteosarcoma-cells-and-inhibits-tumor-growth-in-vivo
#14
Nan Yao, Ke Ren, Yimin Wang, Qiaomei Jin, Xiao Lu, Yan Lu, Cuihua Jiang, Dongjian Zhang, Jun Lu, Chen Wang, Jiege Huo, Yong Chen, Jian Zhang
Paris polyphylla, a traditional antipyretic-detoxicate chinese medicinal herb, has been applied extensively in cancer treatments for nearly 2000 years. The purpose of the present study is to evaluate the potential anti-osteosarcoma effects of Paris polyphylla ethanol extract (PPEE) and to investigate its underlying mechanisms. The antiproliferation activity of PPEE was tested on 143B, MG-63, U-2 OS and hFOB1.19 cells using MTT assay. The pro-apoptotic and cell cycle arrest effects of PPEE were confirmed by Hoechst 33342 staining and flow cytometry...
April 6, 2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28382091/inhibition-of-nicotinamide-phosphoribosyltransferase-induces-apoptosis-in-estrogen-receptor-positive-mcf-7-breast-cancer-cells
#15
Mohammad Alaee, Shahnaz Khaghani, Kiarash Behroozfar, Zahra Hesari, Seyedeh Sara Ghorbanhosseini, Mitra Nourbakhsh
PURPOSE: Tumor cells have increased turnover of nicotinamide adenine dinucleotide (NAD(+)), the main coenzyme in processes including adenosine diphosphate-ribosylation, deacetylation, and calcium mobilization. NAD(+) is predominantly synthesized in human cells via the salvage pathway, with the first component being nicotinamide. Nicotinamide phosphoribosyltransferase (NAMPT) is the key enzyme in this pathway, and its chemical inhibition by FK866 has elicited antitumor effects in several preclinical models of solid and hematologic cancers...
March 2017: Journal of Breast Cancer
https://www.readbyqxmd.com/read/28381689/meningeal-infiltration-of-malignant-lymphoma-presenting-with-froin-s-syndrome
#16
Tomoyuki Saga, Toshimichi Ishihara, Michiyo Kanagawa
Froin's syndrome is characterized by a combination of marked coagulation, elevated protein levels, and xanthochromia of the cerebrospinal fluid (CSF). It is due to blockage of CSF flow by a spinal cord mass or results from meningeal irritation during meningitis. However, Froin's syndrome has not been reported in hematological malignancies. Herein, we present two cases of lymphomatous leptomeningitis with Froin's syndrome. A 66-year-old man suffered consciousness disturbance during chemotherapy for a relapse of peripheral T-cell lymphoma, not otherwise specified...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28378896/a-comprehensive-assessment-of-immunophenotyping-performed-in-cryopreserved-peripheral-whole-blood
#17
Chris P Verschoor, Vikas Kohli, Cynthia Balion
BACKGROUND: Monitoring the frequency and phenotype of white blood cell subsets using flow cytometry (immunophenotyping) has proven to be an incredibly powerful tool in the assessment of health. Although improved technologies have aided in the practical implementation of immunophenotyping in clinical and epidemiological studies, the transportation of blood from the site of collection to a central laboratory for analysis within a reasonable timeframe may not be feasible. Hence, the purpose of the following study was to investigate the validity of cryopreserved whole blood as a simple to prepare and cost-effective biospecimen for multi-colour immunophenotyping in a large epidemiological study - namely, The Canadian Longitudinal Study on Aging (CLSA)...
April 5, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28376585/-expert-consensus-on-flow-cytometry-in-diagnosis-of-non-hodgkin-lymphomas
#18
(no author information available yet)
No abstract text is available yet for this article.
April 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28373471/continuation-of-a-levonorgestrel-intrauterine-device-during-hematopoietic-stem-cell-transplant-a-case-report
#19
Paula C Brady, Robert J Soiffer, Elizabeth S Ginsburg
BACKGROUND: During treatment of hematologic malignancies in premenopausal women, both menstrual suppression and contraception are crucial. Continuation of hormonal intrauterine devices (IUDs) - widely used and highly effective contraceptives that also decrease menstrual flow - is controversial during hematopoietic stem cell transplants (SCTs) due to infectious and vaginal bleeding concerns. CASE REPORT: A 23-year-old nulligravid female was diagnosed with acute myeloid leukemia (AML, positive for FLT3-ITD, DNMT3A and RUNX1, with normal cytogenetics)...
April 2017: Anticancer Research
https://www.readbyqxmd.com/read/28351195/utility-of-flow-cytometry-in-diagnosing-hematologic-malignancy-in-tonsillar-tissue
#20
Omonigho Aisagbonhi, Michelle DeLelys, Nicole Hartford, Frederic Preffer, Amy Ly
OBJECTIVE: Tonsil surgical biopsy or excision is a very common procedure. However, there exist no consensus guidelines for the pathologic handling of tonsil specimens; gross and/or microscopic evaluation may be used. Diagnosis of tonsillar hematologic malignancy requires histology, immunohistochemistry and/or flow cytometry. Data regarding the utility of flow cytometry in tonsillar tissues are limited. We assessed our experience with flow cytometry for tonsil diagnosis with regard to accuracy and use patterns at a tertiary academic medical center...
March 1, 2017: International Journal of Surgical Pathology
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