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flow cytometry immunophenotyping

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https://www.readbyqxmd.com/read/28542711/preventing-relapse-after-haematopoietic-stem-cell-transplantation-for-acute-leukaemia-the-role-of-post-transplantation-minimal-residual-disease-mrd-monitoring-and-mrd-directed-intervention
#1
REVIEW
Xiao-Dong Mo, Meng Lv, Xiao-Jun Huang
Relapse is the main cause of treatment failure after allogeneic haematopoietic stem cell transplantation (allo-HSCT) for acute leukaemia (AL). Post-transplantation minimal residual disease (MRD) monitoring enables risk stratification and identifies AL patients at higher risk of relapse. MRD assessment primarily involves the determination of leukaemia-associated immunophenotypic patterns using multiparameter flow cytometry, and the polymerase chain reaction (PCR)-based evaluation of expression levels of leukaemia-related genes (specific reciprocal gene rearrangements and other mutation types)...
May 23, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28540857/an-unusual-case-of-acute-leukemia
#2
Carole Fleury, Marie Passet, Catherine Settegrana, Laurence Simon, Elise Chapiro, Amélie Trinquand, Ines Safra Zaghouani, Madalina Uzunov, Magali Le Garff-Tavernier, Marine Armand, Myrto Costopoulos
We report the case of a 31 year-old man diagnosed with an atypical acute leukemia difficult to characterize cytologically. The immunophenotyping identified a blastic population co-expressing myeloid, lymphoid B and lymphoid T markers suggesting the diagnosis of either a mixed phenotype acute leukemia (MPAL) or an early T-cell precursor acute lymphoblastic leukemia (ETP-ALL). Because of the poor prognosis linked to these leukemias, the patient benefited from chemotherapy targeting both myeloid and lymphoid components, followed by allogeneic hematopoietic stem cell transplantation...
June 1, 2017: Annales de Biologie Clinique
https://www.readbyqxmd.com/read/28509416/the-importance-of-cd39-cd43-cd81-and-cd95-expression-for-differentiating-b-cell-lymphoma-by-flow-cytometry
#3
Chandra Chiappin Cardoso, Mariangeles Auat, Iris Mattos Santos-Pirath, Renata Cristina Messores Rudolf-Oliveira, Jessica Pires da Silva, Bárbara Gil Lange, Danielle Siegel, Ana Carolina Rabello de Moraes, Joanita Angela Gonzaga Del Moral, Maria Claudia Santos-Silva
BACKGROUND: B cell lymphomas' (BCL) current diagnosis is usually based on a combination of morphology, immunophenotype, recurrent cytogenetic aberration and clinical features. However, even with these diagnostic tools, a definitive diagnosis can be difficult to achieve. Therefore, the aim of this study was to assess the profile of CD39, CD43, CD81, and CD95 expressions in diffuse large B cell lymphoma (DLBCL), follicular lymphoma (FL), and Burkitt lymphoma (BL) cases. METHODS: To address this issue, we investigated the expression of CD39, CD43, CD81, and CD95 by eight-color flow cytometry in retrospective cases from 2014 to 2016...
May 16, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28502306/-detection-and-analysis-of-immune-molecules-in-leukemia-cell-surfaces-of-acute-promyelocytic-leukemia
#4
Ting Dong, Yaxian Jiang, Zhengfa Li, Hongmei Ouyang, Qin Zhang
Objective To investigate the immunophenotypic characteristics of acute promyelocytic leukemia (APL) and its clinical significance. Methods Immunophenotyping was performed by four-color flow cytometry with CD45/SSC-lin gating for neoplastic cells and was divided into five levels according to the intensity of antigen expression. Results The expression intensity and percentage of typical APL phenotypes were: myeloperoxidase (MPO) and CD33 were consistently expressed (100%); CD38 (82.35%), CD13 (64.71%), CD64 (50%), CD123 (47...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28499650/the-mesenchymal-state-predicts-poor-disease-free-survival-in-resectable-non-small-cell-lung-cancer
#5
Kunal Mehta, Erika Moravcikova, David McFall, James D Luketich, Arjun Pennathur, Albert D Donnenberg, Vera S Donnenberg
BACKGROUND: The epithelial-mesenchymal transition (EMT) is thought to contribute to the overall invasiveness of malignant cells. Expression of cluster of differentiation (CD) 44 and CD90 mark the mesenchymal state in multiple epithelial malignancies. Their role in lung cancer remains unclear, however. This study evaluated the prognostic significance of CD44 and CD90 coexpression in patients with resectable primary non-small cell lung cancer (NSCLC). METHODS: This was a nonconcurrent cohort study of patients with resectable NSCLC, stratified by the degree of expression of CD44/CD90 double-positive cells in their primary tumor...
May 9, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28485188/quantification-of-inflammatory-markers-in-laryngotracheal-stenosis
#6
Kevin M Motz, Linda X Yin, Idris Samad, Dacheng Ding, Michael K Murphy, Madhavi Duvvuri, Alexander T Hillel
Objectives (1) Develop a novel method for serial assessment of gene and protein expression in laryngotracheal stenosis (LTS). (2) Assess cytokine expression and determine an immunophenotype in LTS. Study Design A matched comparison of endolaryngeal brush biopsy samples from laryngotracheal scar and normal airway. Setting Tertiary care hospital, 2015-2016. Methods Brush biopsy specimens of laryngotracheal scar and normal trachea were obtained from 17 patients with LTS at the time of operating room dilation and were used for protein and RNA extraction...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28477077/immunophenotyping-as-a-new-tool-for-classification-and-monitoring-of-systemic-autoimmune-diseases
#7
Yves Renaudineau
The clinical course of systemic autoimmune diseases (SADs) varies greatly, even between individuals with the same disease. Understanding of the immune actors is informative and could lead to significant improvements in diagnosis, monitoring, initial treatment decisions and/or follow-up. However, immunological changes in mononuclear cells associated with SADs have been only partially described, and usually are limited to analysis of peripheral blood cells (less than 5% of the total mononuclear pool). Another limitation is technological, related to utilization of flow cytometry, which remains highly variable with regards to sample preparation, reagents, instrument constraints, and data analysis...
May 5, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28475434/enhancing-acute-myeloid-leukemia-therapy-monitoring-response-using-residual-disease-testing-as-a-guide-to-therapeutic-decision-making
#8
Benjamin Tomlinson, Hillard M Lazarus
Current standards for monitoring the response of acute myeloid leukemia (AML) are based on morphologic assessments of the bone marrow and recovery of peripheral blood counts. A growing experience is being developed to enhance the detection of small amounts of AML, or minimal residual disease (MRD). Areas covered: Available techniques include multi-color flow cytometry (MFC) of leukemia associated immunophenotypes (LAIP), quantitative reverse transcriptase polymerase chain reaction (QRT-PCR) for detecting fusion and mutated genes (RUNX1-RUNX1T1, CBFB-MYH11, and NPM1), overexpression of genes such as WT1, and next generation sequencing (NGS) for MRD...
May 12, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28459703/novel-cytogenetic-findings-in-a-case-of-mixed-phenotype-acute-leukemia-within-the-context-of-a-complex-karyotype
#9
David Shabsovich, Gary Schiller, Yalda Naeini, Robert Collins, Carlos A Tirado
BACKGROUND: Mixed phenotype acute leukemia (MPAL) is a rare hematological malignancy characterized by combinatorial aberrations involving cells of the myeloid, T-, and/or B- lineages, most often diagnosed by means of immunophenotyping in order to assess lineage-specific markers, which can still yield inconclusive diagnoses. MPAL with a complex karyotype (three or more chromosomal abnormalities) is a cytogenetic subtype of MPAL associated with a poor prognosis, but limited data is available about the cytogenetic abnormalities present in this context...
2017: Journal of the Association of Genetic Technologists
https://www.readbyqxmd.com/read/28454452/flow-cytometry-based-immunophenotypic-analysis-of-primary-systemic-light-chain-amyloidosis
#10
Xiangwen Diao, Juan Li, Juan Ouyang, Junru Liu, Beihui Huang, Meilan Chen, Jingli Gu
Using flow cytometry, the present study aimed to investigate the immunophenotypic characteristics of malignant plasma cells (PCs) in the bone marrow of patients with primary systemic light chain amyloidosis (AL) compared with the characteristics of patients with multiple myeloma (MM). Flow cytometric results of 51 patients with AL and 150 patients with MM were reviewed. The proportion of total bone marrow PCs in the patients with AL was significantly lower than that in the patients with MM, 1.35% (0.3-9.5%) vs...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28447427/the-utility-of-peripheral-blood-smear-review-for-identifying-specimens-for-flow-cytometric-immunophenotyping
#11
REVIEW
F E Craig
Laboratory professionals are in an ideal situation to identify CBC and peripheral blood smear findings that raise the possibility of a hematolymphoid neoplasm, and based on this information make recommendations for additional studies, such as flow cytometric immunophenotyping. In some circumstances a definitive diagnosis can be established from the combined peripheral blood morphologic and immunophenotypic findings obviating the need for bone marrow evaluation, such as for chronic lymphocytic leukemia. Occasionally flow cytometric studies are superior to morphologic assessment, such as in screening for hairy cell leukemia or identifying lymphocytic-variant hypereosinophilia...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28447425/ten-color-15-antibody-flow-cytometry-panel-for-immunophenotyping-of-lymphocyte-population
#12
REVIEW
A Rajab, O Axler, J Leung, M Wozniak, A Porwit
We have developed a lymphoproliferative disorder screening tube (LPD-ST) with the aim to provide comprehensive immunophenotyping of lymphocyte subsets with minimal need for additional testing. The LPD-ST consists of CD4/kappa FITC, CD8/lambda PE, CD3/CD14ECD, CD38PC5.5, CD20/CD56PC7, CD10APC, CD19APC-A700, CD5APC-A750, CD57/CD23PB and CD45KO. The LPD-ST was validated against previously used lymphocyte subset panels in Canada (n=60) and in Sweden (n=43) and against the OneFlow(™) LST (n=60). The LPD-ST panel was then implemented in clinical practice using dried monoclonal antibody reagents (Duraclone(®) ) on 649 patient samples in Sweden...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28447408/flow-cytometry-recognizing-unusual-populations-in-leukemia-and-lymphoma-diagnosis
#13
REVIEW
M Keeney, B D Hedley, I H Chin-Yee
Flow cytometry is an invaluable technology in the examination of blood, bone marrow, tissue and body fluids for the presence or absence of hematological disease. It is used in both diagnostic and follow-up testing, with an increasingly important role in the detection of very small residual disease populations (Minimal Residual Disease, MRD) However, flow cytometry immunophenotyping of leukemia and lymphoma is highly dependent on interpretation of results and with the increased complexity of 8-10 color instruments routinely used in clinical laboratories, knowledge of disease-defining populations is increasingly important as is recognizing normal and reactive patterns...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28446296/-expression-of-cc-chemokine-receptor-7-in-patiens-with-multiple-myeloma-and-its-relationship-with-extramedullary-disease
#14
Ya-Nan Wang, Si-Lin Gan, Fei-Fei Wu, Wei-Min Wang, Shuai-Quan Li, Jie Ma, Rong Guo, Zhong-Xing Jiang, Bao-Hong Yue, Hui Sun
OBJECTIVE: To investigate the expression of CC-chemokine receptor 7(CCR7) in patients with multiple myeloma(MM) and its correlation with clinical features of MM. METHODS: The level of CCR7 expression in bone marrow samples from 53 newly diagnosed MM patients was detected by flow cytometry(FCM). Statistical methods were used to analyze the correlation between CCR7 expression and clinical features, such as sex, age, M protein, peripheral blood cell count, biochemical indicators, plasma cell ratio of bone marrow, immunophenotype, osteopathy and extramedullary disease...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28445424/the-effect-of-deoxynivalenol-on-selected-populations-of-immunocompetent-cells-in-porcine-blood-a-preliminary-study
#15
Michał Dąbrowski, Ewa Jakimiuk, Mirosław Baranowski, Magdalena Gajęcka, Łukasz Zielonka, Maciej Tadeusz Gajęcki
Deoxynivalenol (DON) is one of the most prevalent mycotoxins in Europe. Pigs are an animal species that is most susceptible to this mycotoxin. Deoxynivalenol causes significant losses in pig production by lowering feed intake, decreasing daily weight gains, disrupting immune responses, and increasing susceptibility to diseases. The aim of this experiment was to determine the influence of feed contaminated with DON at concentrations insignificantly higher than recommended by the European Commission (900 µg/kg)...
April 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28438482/manufacture-and-preparation-of-human-placenta-derived-mesenchymal-stromal-cells-for-local-tissue-delivery
#16
Lee Lankford, Y Julia Chen, Zoe Saenz, Priyadarsini Kumar, Connor Long, Diana Farmer, Aijun Wang
BACKGROUND: In this study we describe the development of a Current Good Manufacturing Practice (CGMP)-compliant process to isolate, expand and bank placenta-derived mesenchymal stromal cells (PMSCs) for use as stem cell therapy. We characterize the viability, proliferation and neuroprotective secretory profile of PMSCs seeded on clinical-grade porcine small intestine submucosa extracellular matrix (SIS-ECM; Cook Biotech). METHODS: PMSCs were isolated from early gestation placenta chorionic villus tissue via explant culture...
April 21, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28429508/immunophenotyping-and-activation-status-of-maternal-peripheral-blood-leukocytes-during-pregnancy-and-labour-both-term-and-preterm
#17
Jianhong Zhang, Oksana Shynlova, Sally Sabra, Annie Bang, Laurent Briollais, Stephen J Lye
The onset of labour in rodents and in humans is associated with physiological inflammation which is manifested by infiltration of activated maternal peripheral leukocytes (mPLs) into uterine tissues. Here, we used flow cytometry to immunophenotype mPLs throughout gestation and labour, both term and preterm. Peripheral blood was collected from non-pregnant women and pregnant women in the 1st, 2nd and 3rd trimesters. Samples were also collected from women in active labour at term (TL) or preterm (PTL) and compared with women term not-in-labour (TNIL) and preterm not-in-labour (PTNIL)...
April 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28428879/a-systems-biology-approach-to-investigating-the-influence-of-exercise-and-fitness-on-the-composition-of-leukocytes-in-peripheral-blood
#18
Michael P Gustafson, Ara Celi DiCostanzo, Courtney M Wheatley, Chul-Ho Kim, Svetlana Bornschlegl, Dennis A Gastineau, Bruce D Johnson, Allan B Dietz
BACKGROUND: Exercise immunology has become a growing field in the past 20 years, with an emphasis on understanding how different forms of exercise affect immune function. Mechanistic studies are beginning to shed light on how exercise may impair the development of cancer or be used to augment cancer treatment. The beneficial effects of exercise on the immune system may be exploited to improve patient responses to cancer immunotherapy. METHODS: We investigated the effects of acute exercise on the composition of peripheral blood leukocytes over time in a male population of varying fitness...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28427520/lymphoblastic-lymphoma
#19
REVIEW
Sergio Cortelazzo, Andrés Ferreri, Dieter Hoelzer, Maurilio Ponzoni
Lymphoblastic lymphoma (LBL) is a neoplasm of immature B cells committed to the B-(B-LBL) or T-cell lineage (T-LBL) that accounts for approximately 2% of all lymphomas. Although histological features are usually sufficient to distinguish lymphoblastic from mature B- or T-cell neoplasms, of greater importance for diagnosis is the characterization of immunophenotype by flow cytometry. LBL occurs more commonly in children than in adults, mostly in males. A bone marrow involvement <25% (or 20% according to WHO) formally distinguishes LBL from ALL...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28424276/thrombin-induced-podocyte-injury-is-protease-activated-receptor-dependent
#20
Ruchika Sharma, Amanda P Waller, Shipra Agrawal, Katelyn J Wolfgang, Hiep Luu, Khurrum Shahzad, Berend Isermann, William E Smoyer, Marvin T Nieman, Bryce A Kerlin
Nephrotic syndrome is characterized by massive proteinuria and injury of specialized glomerular epithelial cells called podocytes. Studies have shown that, whereas low-concentration thrombin may be cytoprotective, higher thrombin concentrations may contribute to podocyte injury. We and others have demonstrated that ex vivo plasma thrombin generation is enhanced during nephrosis, suggesting that thrombin may contribute to nephrotic progression. Moreover, nonspecific thrombin inhibition has been shown to decrease proteinuria in nephrotic animal models...
April 19, 2017: Journal of the American Society of Nephrology: JASN
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