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Immunophenotype

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https://www.readbyqxmd.com/read/30340515/expression-of-renal-cell-markers-and-detection-of-3p-loss-links-endolymphatic-sac-tumor-to-renal-cell-carcinoma-and-warrants-careful-evaluation-to-avoid-diagnostic-pitfalls
#1
Rachel Jester, Iya Znoyko, Maria Garnovskaya, Joseph N Rozier, Ryan Kegl, Sunil Patel, Tuan Tran, Malak Abedalthagafi, Craig M Horbinski, Mary Richardson, Daynna J Wolff, Razvan Lapadat, William Moore, Fausto J Rodriguez, Jason Mull, Adriana Olar
Endolymphatic sac tumor (ELST) is a rare neoplasm arising in the temporal petrous region thought to originate from endolymphatic sac epithelium. It may arise sporadically or in association with Von-Hippel-Lindau syndrome (VHL). The ELST prevalence in VHL ranges from 3 to 16% and may be the initial presentation of the disease. Onset is usually in the 3rd to 5th decade with hearing loss and an indolent course. ELSTs present as locally destructive lesions with characteristic computed tomography imaging features...
October 19, 2018: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/30339971/clinicopathologic-and-immunohistochemical-features-of-uterine-adenomyomatous-polyps
#2
Kyle C Strickland, Liping Yuan, Bradley J Quade, Marisa R Nucci, Brooke E Howitt
Adenomyomatous polyps (APs) of the uterus (also termed polypoid adenomyomas and pedunculated adenomyomas) are exophytic proliferations composed of myomatous stroma admixed with endometrial glands. APs can be diagnostically challenging, mimicking polypoid neoplasms such as atypical polypoid adenomyoma and adenosarcoma. The purpose of this study was to describe the clinicopathologic, morphologic, and molecular features of APs, as well as to raise awareness of this entity as a potential source of diagnostic confusion...
October 16, 2018: Human Pathology
https://www.readbyqxmd.com/read/30336122/impact-of-cd39-expression-on-cd4-t-lymphocytes-and-6q-deletion-on-outcome-of-patients-with-chronic-lymphocytic-leukemia
#3
Eman Mosaad Zaki, Asmaa Mohamed Zahran, Alshimaa Abdelazeem Metwaly, Rania Hafez, Safinaz Hussein, Abdallah Elaiw Mohammed
OBJECTIVE/BACKGROUND: Chronic lymphocytic leukemia is one of the commonest leukemias affecting adults. CD39 inhibits T-cell and NK cell responses by hydrolyzing adenosine triphosphate and adenosine diphosphate, suppressing the immune system. We investigated expression of CD39 on CD4+ T Lymphocytes in chronic lymphocytic leukemia (CLL) patients and its relationship with deletion 6q, its association with disease stage and survival. METHODS: Thirty CLL patients and 20 matched controls were included in the study...
October 11, 2018: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/30335057/-comparative-morphological-characteristics-and-immunophenotype-of-urothelial-carcinomas-of-the-renal-pelvis-and-bladder
#4
Yu I Osmanov, Zh A Gaibov, E A Kogan, S G Radenska-Lopovok, Kh Z Tursunov
Urothelial carcinoma is one of the most frequently diagnosed malignant tumors of the bladder and upper urinary tract, which ranks seventh in the pattern of cancer. Urothelial carcinoma of the renal pelvis is less common; but has a more aggressive clinical course and a worse prognosis than that of the bladder. This is due to the clinical and morphological features of this form of cancer, which, unlike bladder cancer, have not been studied enough. OBJECTIVE: To comparatively analyze the morphological and immunophenotypic parameters of urothelial carcinomas of the renal pelvis and bladder...
2018: Arkhiv Patologii
https://www.readbyqxmd.com/read/30334637/immunophenotype-involved-in-igg4-related-disease
#5
Satoshi Kubo, Shingo Nakayamada, Yoshiya Tanaka
As stated in the comprehensive diagnostic criteria for IgG4-related disease (IgG4-RD), IgG4-RD is characterized by elevated serum IgG4 level and pathological findings, characterized by infiltration of IgG4-positive plasma cells. In addition to fibrotic changes, dysregulated activation of lymphocytes is considered as one of major pathogenic events in IgG4-RD. Among lymphocytes, the importance of plasmablast, T follicular helper (Tfh) cells, T type 2 helper (Th2) cells, T regulatory (Treg) cells, and CD4 positive T cells with cytotoxic activity has been reported...
October 18, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/30334372/extended-immunophenotyping-reference-values-in-a-healthy-pediatric-population
#6
Marina Garcia-Prat, Daniel Álvarez-Sierra, Aina Aguiló-Cucurull, Sandra Salgado-Perandrés, Sara Briongos-Sebastian, Clara Franco-Jarava, Andrea Martin-Nalda, Roger Colobran, Isabel Montserrat, Manuel Hernández-González, Ricardo Pujol-Borrell, Pere Soler-Palacin, Mónica Martínez-Gallo
BACKGROUND: For the accurate diagnosis of immunodeficiencies is crucial to compare patients' immunology laboratory values with age-sex matched controls, yet there is a paucity of normal values for most populations. OBJECTIVES: To define appropriate reference values of extended lymphocyte subpopulations and T-cell receptor excision circle (TRECs) levels in healthy pediatric donors between 1 month and 18 years of age. METHODS: Extended immunophenotyping values were obtained by analysis of multiparameter flow cytometry panels for the following subpopulations: CD4+ and CD8+ Naive, Effector, Effector Memory and Central Memory, T helper subpopulations and their degrees of activation, T Regulatory cells, Recent Thymic Emigrants (RTE), B Lymphocyte subpopulations (Transitional, Naive, Preswitch-Memory, Switch-Memory, Plasmablasts, CD21low, and Exhausted), and subpopulations for Monocytes, NK cells and Dendritic Cells...
October 17, 2018: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/30334354/application-of-immunophenotypic-analysis-in-distinguishing-chronic-myelomonocytic-leukemia-from-reactive-monocytosis
#7
Ru Feng, Vijaya Raj Bhatt, Kai Fu, Samuel Pirruccello, Ji Yuan
OBJECTIVES: The purpose of this study was to determine whether immunophenotypic profiles detected by flow cytometry are useful in differentiating chronic myelomonocytic leukemia (CMML) from reactive monocytosis, and between CMML subtypes. METHODS: Eight-color flow cytometry was used to immunophenotype blasts, monocytes, and granulocytes in the bone marrow of 34 patients with CMML and 12 patients with reactive monocytosis. RESULTS: Bone marrow myeloblast, promonocyte, and monocyte counts by flow cytometry were significantly higher in the CMML group than in the reactive monocytosis group...
October 17, 2018: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/30334347/immunophenotypic-profile-of-cd34-subpopulations-and-their-role-in-the-diagnosis-and-prognosis-of-patients-with-de-novo-particularly-low-grade-myelodysplastic-syndromes
#8
Nikolaos Gardikas, Myrofora Vikentiou, Evgenia Konsta, Christos K Kontos, Sotirios G Papageorgiou, Aris Spathis, Efthimia Bazani, Anthi Bouchla, Violetta Kapsimali, Katherina Psarra, Periklis Foukas, George Dimitriadis, Vasiliki Pappa
BACKGROUND: Myelodysplastic syndromes (MDS) are clonal hematopoietic stem cell disorders with unknown aetiology. Multiparameter flow cytometry (MFC) is being evaluated for the diagnosis and prognosis of MDS. METHODS: In the present study, five-color MFC was performed on bone marrow aspirates of 50 untreated patients, newly diagnosed with MDS and 27 age matched control samples. Patients were classified according to World Health Organization 2016, International Prognostic Scoring System (IPSS), and Revised IPSS (IPSS-R)...
October 17, 2018: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/30332649/cdh1-and-pik3ca-mutations-cooperate-to-induce-immune-related-invasive-lobular-carcinoma-of-the-breast
#9
Yeji An, Jessica R Adams, Daniel P Hollern, Anthony Zhao, Stephen G Chang, Miki S Gams, Philip E D Chung, Xiaping He, Rhea Jangra, Juhi S Shah, Joanna Yang, Lauren A Beck, Nandini Raghuram, Katelyn J Kozma, Amanda J Loch, Wei Wang, Cheng Fan, Susan J Done, Eldad Zacksenhaus, Cynthia J Guidos, Charles M Perou, Sean E Egan
CDH1 and PIK3CA are the two most frequently mutated genes in invasive lobular carcinoma (ILC) of the breast. Transcription profiling has identified molecular subtypes for ILC, one of which, immune-related (IR), is associated with gene expression linked to lymphocyte and macrophage infiltration. Here, we report that deletion of Cdh1, together with activation of Pik3ca in mammary epithelium of genetically modified mice, leads to formation of IR-ILC-like tumors with immune cell infiltration, as well as gene expression linked to T-regulatory (Treg) cell signaling and activation of targetable immune checkpoint pathways...
October 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/30328261/cd200-is-a-useful-marker-in-the-diagnosis-of-chronic-lymphocytic-leukemia
#10
Alba Mora, Rosa Bosch, Carolina Cuellar, Eva Puy Vicente, Laura Blanco, Rodrigo Martino, José M Ubeda, Jorge Sierra, Carol Moreno, Josep Nomdedeu
BACKGROUND: The diagnosis of CLL is supported by a typical morphology and immunophenotype and usually does not present difficulties. Nevertheless, some patients with CLL can show an atypical phenotype, this raising the possibility of a lymphoproliferative disorder other than CLL. It has been recently shown that the expression of CD200 could be a rather consistent marker for CLL. METHODS: The expression of CD200 was investigated in 120 consecutive patients with B-cell chronic lymphoproliferative disorders (B-CLPD) (65 cases diagnosed as typical CLL, 16 atypical CLL, and 39 non-CLL before entering the study) by using multiparametric flow cytometry with four color combinations...
October 16, 2018: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/30325056/expanding-the-morphological-spectrum-of-ovarian-microcystic-stromal-tumour
#11
W Glenn McCluggage, Anne-Sophie Chong, Ayoma D Attygalle, Blaise A Clarke, William Chapman, Barbara Rivera, William D Foulkes
AIMS: To expand the morphological spectrum of ovarian microcystic stromal tumour, a rare neoplasm considered to have a relatively constant morphology with microcysts, solid cellular regions and hyalinized fibrous stroma. METHODS AND RESULTS: We report four ovarian neoplasms in patients aged 45, 56, 61 and 71 years with the characteristic immunophenotype of microcystic stromal tumour (diffuse nuclear positivity with beta-catenin, cyclin D1 and WT1; diffuse cytoplasmic positivity with CD10; negative inhibin, calretinin, oestrogen receptor and progesterone receptor)...
October 16, 2018: Histopathology
https://www.readbyqxmd.com/read/30324235/trefoil-factor-family-2-protein-a-potential-immunohistochemical-marker-for-aiding-diagnosis-of-lobular-endocervical-glandular-hyperplasia-and-gastric-type-adenocarcinoma-of-the-uterine-cervix
#12
Shiho Asaka, Tomoyuki Nakajima, Masanobu Momose, Tsutomu Miyamoto, Takeshi Uehara, Hiroyoshi Ota
Gastric-type adenocarcinoma (GA) is an aggressive subtype of cancer of the uterine cervix. Several immunohistochemical markers for gastric mucins, such as mucin 6 (MUC6) and N-acetylglucosamine α1 → 4galactose → R (αGlcNAc-R), which is recognized by HIK1083 antibody, have been introduced for diagnosis of GA and lobular endocervical glandular hyperplasia (LEGH). However, MUC6 is also expressed in normal endocervical glands and HIK1083 antibody has limited availability. Trefoil factor family 2 protein (TFF2) is secreted by gastric, but not normal endocervical glands...
October 15, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/30323982/induction-of-anti-leukemic-responses-by-stimulation-of-leukemic-cd3-cells-with-allogeneic-stimulator-cells
#13
Alejandro Pando, John L Reagan, Martha Nevola, Loren D Fast
Background: Immunotherapeutic protocols have focused on identification of stimuli that induce effective anti-leukemic immune responses. One potent immune stimulus is the encounter with allogeneic cells. Our group previously showed that the infusion of haploidentical donor white blood cells (1-2 × 108 CD3+ cells/kg) into patients with refractory hematological malignancies induced responses of varying magnitude in over half of the patients. Because donor cells were eliminated within 2 weeks in these patients, it is presumed that the responses of recipient lymphocytes were critically important in achieving prolonged anti-leukemic responses...
2018: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/30323928/contemporary-analysis-of-functional-immune-recovery-to-opportunistic-and-vaccine-preventable-infections-after-allogeneic-haemopoietic-stem-cell-transplantation
#14
Harini D de Silva, Rosemary A Ffrench, Maya Korem, Eva Orlowski, David J Curtis, Andrew Spencer, Sharon Avery, Sushrut Patil, Catherine Orla Morrissey
Objectives: Infections are a major cause of mortality after allogeneic haemopoietic stem cell transplantation (alloHSCT), and immune recovery is necessary for prevention. Novel transplant procedures have changed the epidemiology of infections but contemporary data on functional immune recovery are limited. In this pilot study, we aimed to measure immune recovery in the current era of alloHSCT. Methods: Twenty, 13, 11, 9 and 9 alloHSCT recipients had blood collected at baseline (time of conditioning) and 3-, 6-, 9-, and 12-months post-alloHSCT, respectively...
2018: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/30323094/immune-checkpoint-inhibitor-therapy-in-breast-cancer
#15
REVIEW
Cesar A Santa-Maria, Rita Nanda
Initial studies investigating single-agent activity of immune checkpoint inhibitors (ICIs) serve as proof of principle that harnessing the immune system can have anticancer activity in a variety of human malignancies. Although breast cancer was historically believed to be immunogenically silent, early studies indicate overall response rates with ICIs are similar to those observed with many other solid malignancies. Overall response rates in advanced breast cancer are low, but the responses are remarkably durable...
October 2018: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/30322950/enhanced-antitumor-efficacy-of-oncolytic-adenovirus-loaded-menstrual-blood-derived-mesenchymal-stem-cells-in-combination-with-peripheral-blood-mononuclear-cells
#16
Rafael Moreno, Carlos Alberto Fajardo, Marti Farrera-Sal, Ana Judith Perisé-Barrios, Álvaro Morales-Molina, Ahmed Abdullah Al-Zaher, Javier Garcia-Castro, Ramon Alemany
Several studies have evaluated the efficacy of using human oncolytic adenovirus-loaded mesenchymal stem cells for cancer treatment. For example, we have described the antitumor efficacy of CELYVIR, autologous bone marrow mesenchymal stem cells infected with the oncolytic adenovirus ICOVIR-5, for treatment of neuroblastoma patients. Results from this clinical trial point out the role of the immune system in the clinical outcome. In this context, a better understanding of the immunophenotypic changes of human mesenchymal stem cells upon adenoviral infection and how these changes affect human autologous or allogeneic peripheral blood mononuclear cells (PBMCs) could guide strategies to improve the antitumor efficacy of infected Mesenchymal Stem Cells (MSCs)...
October 15, 2018: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/30322385/kras-mutation-in-secondary-malignant-histiocytosis-arising-from-low-grade-follicular-lymphoma
#17
Sarah M Choi, Aleodor A Andea, Min Wang, Amir Behdad, Lina Shao, Yanming Zhang, Xinyan Lu, David Dittmann, Juan Castro, Yi-Hua Chen, Juehua Gao
BACKGROUND: Transformation of follicular lymphoma most typically occurs as diffuse large B-cell lymphoma, however other forms of transformation such as classic Hodgkin lymphoma and lymphoblastic transformation can occur. Secondary malignant histiocytosis also represents a rare form of transformation, which is thought to occur due to a process of transdifferentiation whereby the lymphoma cells exhibit lineage plasticity and lose all evidence of B-cell phenotype and instead acquire the phenotype of a histiocytic neoplasm...
October 15, 2018: Diagnostic Pathology
https://www.readbyqxmd.com/read/30320083/adenocarcinoma-not-otherwise-specified-arising-in-accessory-lacrimal-gland-a-diagnostic-challenge
#18
Tatyana Milman, Codrin Iacob, Simeon Lauer, Michael D Feldman, Paul J L Zhang
Neoplasms arising in accessory lacrimal glands are rare. We describe a 33-year-old man with adenocarcinoma arising in the left lower eyelid accessory lacrimal gland. Microscopic evaluation demonstrated an infiltrative neoplasm composed of mildly to moderately pleomorphic cells with abundant eosinophilic cytoplasm and focal intracytoplasmic vacuoles, arranged predominantly in ductules. Foci of luminal and intracytoplasmic eosinophilic secretory material and occasional mucin were noted. An in situ component was identified in the gland of Wolfring...
September 2018: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/30317731/-clinicopathologic-features-and-prognosis-of-gastrointestinal-mantle-cell-lymphoma
#19
W H Hou, P Wei, J L Xie, Y Y Zheng, Y L Zhang, X G Zhou
Objective: To investigate the clinicopathologic features and prognosis of gastrointestinal mantle cell lymphoma (GI-MCL). Methods: Clinical data of 38 GI-MCL patients diagnosed at Beijing Friendship Hospital from January 2002 to January 2016 were retrospectively reviewed morphologically and immunophenotypically. IgH/CCND1 gene fusion was assessed by fluorescent in situ hybridization (FISH). For comparison, 60 cases of non-GI-MCL were randomly selected to extract the differences inclinicopathological features and patient survival between the two groups...
October 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/30317730/-gastrointestinal-inflammatory-myofibroblastic-tumor-a-clinicopathologic-study
#20
Q P Wang, M F Gan, J W Zhang, S X Weng, L N Zhang
Objective: To study the clinicopathologic characteristics, immunophenotype and ALK gene alterations of gastrointestinal inflammatory myofibroblastic tumor. Methods: Clinical data, histological features and immunohistochemical results were analyzed in 7 cases of gastrointestinal inflammatory myofibroblastic tumor at Zhejiang Province Taizhou Hospital from January 2005 to December 2016. ALK gene status was investigated by ALK fluorescence in situ hybridization. Results: There were 4 female and 3 male patients...
October 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
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