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https://www.readbyqxmd.com/read/29785017/myc-bcl2-bcl6-triple-hit-lymphoma-a-study-of-40-patients-with-a-comparison-to-myc-bcl2-and-myc-bcl6-double-hit-lymphomas
#1
Wenting Huang, L Jeffrey Medeiros, Pei Lin, Wei Wang, Guilin Tang, Joseph Khoury, Sergej Konoplev, C Cameron Yin, Jie Xu, Yasuhiro Oki, Shaoying Li
High-grade B-cell lymphomas with MYC, BCL2, and BCL6 rearrangements (triple hit lymphoma) are uncommon. We studied the clinicopathologic features of 40 patients with triple hit lymphoma and compared them to 157 patients with MYC/BCL2 double hit lymphoma and 13 patients with MYC/BCL6 double hit lymphoma. The triple hit lymphoma group included 25 men and 15 women with a median age of 61 years (range, 34-85). Nine patients had a history of B-cell lymphoma. Histologically, 23 (58%) cases were diffuse large B-cell lymphoma and 17 cases had features of B-cell lymphoma, unclassifiable, with features intermediate between diffuse large B-cell lymphoma and Burkitt lymphoma...
May 21, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29775004/-detection-of-differentially-expressed-gene-of-allergic-rhinitis-based-on-rt%C3%A2-profiler-pcr-array
#2
Y Peng, X Q Li, Q H Qiu
Objective: The aim of this study is to detect differentially expressed gene of allergic rhinitis (AR) based on RT² profiler PCR array. Method: The real-time PCR array containing 84 genes were used to compare inferior turbinate samples obtained from AR patients (n=8) and healthy individuals (n=8). Result: The results showed that 67 genes were down regulated and 17 genes were up regulated in AR inferior turbinate after analysis of 84 genes related to allergy and asthma. STAT6 and BCL6 were recognized as differentially expressed genes...
June 5, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29743314/cd8-follicular-t-cells-promote-b-cell-antibody-class-switch-in-autoimmune-disease
#3
Kristen M Valentine, Dan Davini, Travis J Lawrence, Genevieve N Mullins, Miguel Manansala, Mufadhal Al-Kuhlani, James M Pinney, Jason K Davis, Anna E Beaudin, Suzanne S Sindi, David M Gravano, Katrina K Hoyer
CD8 T cells can play both a protective and pathogenic role in inflammation and autoimmune development. Recent studies have highlighted the ability of CD8 T cells to function as T follicular helper (Tfh) cells in the germinal center in the context of infection. However, whether this phenomenon occurs in autoimmunity and contributes to autoimmune pathogenesis is largely unexplored. In this study, we show that CD8 T cells acquire a CD4 Tfh profile in the absence of functional regulatory T cells in both the IL-2-deficient and scurfy mouse models...
May 9, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29730836/round-robin-test-for-the-cell-of-origin-classification-of-diffuse-large-b-cell-lymphoma-a-feasibility-study-using-full-slide-staining
#4
Sarah Reinke, Julia Richter, Falko Fend, Alfred Feller, Martin-Leo Hansmann, Katrin Hüttl, Ilske Oschlies, German Ott, Peter Möller, Andreas Rosenwald, Harald Stein, Michael Altenbuchinger, Rainer Spang, Wolfram Klapper
Diffuse large B-cell lymphoma (DLBCL) is subdivided by gene expression analysis (GEP) into two molecular subtypes named germinal center B-cell-like (GCB) and activated B-cell-like (ABC) after their putative cell-of-origin (COO). Determination of the COO is considered mandatory in any new-diagnosed DLBCL, not otherwise specified according to the updated WHO classification. Despite the fact that pathologists are free to choose the method for COO classification, immunohistochemical (IHC) assays are most widely used...
May 5, 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29722657/patterns-of-failure-in-patients-with-double-hit-or-double-expressor-lymphomas-implications-for-radiation-therapy
#5
Vasu Tumati, Lakshya Trivedi, Hsiao-Ching Li, Prapti Patel, Pier P Scaglioni, Madhuri Vusirikala, Navid Sadeghi, Syed Rizvi, Weina Chen, Jason Wachsmann, Robert Collins, Neil B Desai
PURPOSE: Lymphomas with MYC and either BLC2 or BCL6 rearrangements or MYC and BCL-2 protein overexpression, classified as double-hit (DHL) or double-expressor (DEL) lymphomas, respectively, are associated with poorer response to standard immunochemotherapy. Optimal therapy is not clear, and little information exists on the contribution of consolidative radiation therapy in these patients. This study describes the patterns of failure of DHL/DEL in relation to initial sites of disease and indications for radiation therapy in unselected diffuse large B-cell lymphoma (DLBCL)...
April 1, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29710508/puerarin-improves-methotrexate-induced-renal-damage-by-up-regulating-renal-expression-of-oat1-and-oat3-in-vivo-and-in-vitro
#6
Qi Liu, Zhihao Liu, Xiaokui Huo, Changyuan Wang, Qiang Meng, Huijun Sun, Pengyuan Sun, Jinyong Peng, Xiaodong Ma, Kexin Liu
The regulation of renal transporters such as organic anion transporter (OATs) is a new target for treatment of acute renal failure. The purpose of this study was to investigate whether the effect of puerarin (Pur) on renal damage induced by methotrexate (MTX) is related to the expression of renal Oat1/3 in vivo and in vitro, and to explore the related mechanisms. Effect of Pur on the renal damage caused by MTX was evaluated by assessment of the changes of endogenous metabolites, toxins and H&E staining...
April 23, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29696026/allergic-t-h-2-response-governed-by-b-cell-lymphoma-6-function-in-naturally-occurring-memory-phenotype-cd4-t-cells
#7
Takashi Ogasawara, Yuko Kohashi, Jun Ikari, Toshibumi Taniguchi, Nobuhide Tsuruoka, Haruko Watanabe-Takano, Lisa Fujimura, Akemi Sakamoto, Masahiko Hatano, Hirokuni Hirata, Yasutsugu Fukushima, Takeshi Fukuda, Kazuhiro Kurasawa, Koichiro Tatsumi, Takeshi Tokuhisa, Masafumi Arima
Transcriptional repressor B-cell lymphoma 6 (Bcl6) appears to regulate TH 2 immune responses in allergies, but its precise role is unclear. We previously reported that Bcl6 suppressed IL-4 production in naïve CD4+ T cell-derived memory TH 2 cells. To investigate Bcl6 function in allergic responses in naturally occurring memory phenotype CD4+ T (MPT) cells and their derived TH 2 (MPTH 2) cells, Bcl6 -manipulated mice , highly conserved intron enhancer (hcIE)-deficient mice , and reporter mice for conserved noncoding sequence 2 (CNS2) 3' distal enhancer region were used to elucidate Bcl6 function in MPT cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29679906/microrna-876-5p-inhibits-epithelial-mesenchymal-transition-and-metastasis-of-hepatocellular-carcinoma-by-targeting-bcl6-corepressor-like-1
#8
Qiuran Xu, Qiaojuan Zhu, Zhenyu Zhou, Yufeng Wang, Xin Liu, Guozhi Yin, Xiangmin Tong, Kangsheng Tu
Our previous study has reported that BCL6 corepressor like 1 (BCORL1) plays an oncogenic role in hepatocellular carcinoma (HCC) via promoting epithelial-mesenchymal transition (EMT) and tumor metastasis. However, the regulation of BCORL1 mediated by microRNAs (miRNAs) remains poorly known. The analysis of our clinical samples indicated that BCORL1 expression was markedly higher in HCC tissues than that in tumor-adjacent normal tissues. The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) datasets revealed that high BCORL1 expression associated with high tumor grade, advanced tumor stage and poor survival of HCC patients...
April 18, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29678710/pediatric-type-follicular-lymphoma-in-the-dura-a-case-report-and-literature-review
#9
Junya Yamaguchi, Seiichi Kato, Eri Iwata, Kosuke Aoki, Ryusuke Kabeya, Atsushi Natsume, Toshihiko Wakabayashi
BACKGROUND: Primary central nervous system lymphoma (PCNSL) is a relatively common tumor of the central nervous system. Although PCNSLs generally arise from the parenchyma, lymphomas arising primarily from the dura are termed dural lymphomas (DL). Mucosa-associated lymphoid tissue is the most unique histological feature of DL. Due to its rarity, clinical characteristics and treatments for DL have not been fully elucidated to date. CASE DESCRIPTION: A 31-year-old man with no past medical history presented with numbness in his left upper limb...
April 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29666157/cd30-expression-and-its-correlation-with-myc-and-bcl2-in-de-novo-diffuse-large-b-cell-lymphoma
#10
Qi-Xing Gong, Zhen Wang, Chong Liu, Xiao Li, Ting-Xun Lu, Jin-Hua Liang, Wei Xu, Jian-Yong Li, Zhi-Hong Zhang
AIM: CD30+ diffuse large B-cell lymphoma (DLBCL) has emerged as a new immunophenotypic variant of de novo DLBCLs. However, the prevalence of CD30 positivity is variable according to different studies, and the prognostic significance of CD30 is also controversial. This study aimed to investigate the positive expression rate and prognostic impact of CD30 in de novo DLBCLs and try to find the correlated influences. METHODS: A total of 241 patients with de novo DLBCL in east China from 2008 to 2015 were included to investigate the prevalence, clinicopathological features and outcomes of CD30+ de novo DLBCLs...
April 17, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29666005/unexpected-favorable-outcome-in-a-patient-with-high-grade-b-cell-lymphoma-with-abnormalities-of-myc-bcl6-and-bcl2-loci
#11
Thomas Adams, Deborah Fuchs, Patricia K Shadoan, Laurel Johnstone, Branden M Lau, Lee McGhan, Faiz Anwer, Hussam Al-Kateb
High grade B-cell lymphoma (HGBCL) by WHO 2016 classification requires rearrangements of MYC and BCL2 and/or BCL6, practically covering the so called "double-hit" or "triple hit" lymphomas. We report a case of HGBCL "triple-hit" lymphoma in a 64-year old female. Cytogenetic and fluorescence in situ hybridization (FISH) studies revealed complex karyotype including rearrangement of MYC to a novel, non-IG partner on chromosome 18, and rearrangement of BCL2, BCL6 and IGH as well as ins(3)(q21q27...
April 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29662870/primary-cns-high-grade-b-cell-lymphoma-with-rearrangements-of-myc-and-bcl6-a-case-report
#12
Appalanaidu Sasapu, Dinesh Atwal, Giovanni Insuasti-Beltran, Yogesh Jethava
No abstract text is available yet for this article.
March 2018: Blood Research
https://www.readbyqxmd.com/read/29661714/microrna-155-up-regulation-in-the-cns-is-strongly-correlated-to-down-s-syndrome-dementia
#13
Esmerina Tili, Louisa Mezache, Jean-Jacques Michaille, Vicky Amann, James Williams, Paige Vandiver, Maria Quinonez, Paolo Fadda, Adel Mikhail, Gerard Nuovo
This study examined the molecular correlates of Down's dementia. qRTPCR for chromosome 21 microRNAs was correlated with in situ hybridization, immunohistochemistry for microRNA targets, mRNAs located on chromosome 21, and neurofibrillary tangles in human and the Ts65 dn mouse Down's model. qRTPCR for the microRNAs on the triplicated chromosome showed miR-155 dominance in brain tissues (14.3 fold increase, human and 24.2 fold increase, mouse model) that co-expressed with hyperphosphorylated tau protein. miR-155 was not elevated in Alzheimer's disease or neonates with Downs' syndrome...
March 26, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29629947/identification-of-double-hit-lymphomas-using-updated-who-criteria-insights-from-routine-myc-immunohistochemistry-in-272-consecutive-cases-of-aggressive-b-cell-lymphomas
#14
Hany Sakr, James R Cook
Aggressive lymphomas with MYC and BCL2 and/or BCL6 translocations ("double hit" lymphomas, DHL) represent a distinct diagnostic category in the updated World Health Organization (WHO) classification. The diagnostic yield of MYC immunohistochemistry (IHC) for the identification of DHL is currently uncertain. MYC IHC was performed in 272 consecutive cases of aggressive B-cell lymphoma, and results correlated with fluorescence in situ hybridization (FISH) for MYC translocations. Among 156 patients with IHC and FISH data, MYC IHC identified MYC translocations with 89% sensitivity, 38% specificity, 92% negative predictive value, and 29% positive predictive value...
April 7, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29617174/prolonged-follicular-helper-t-cell-responses-in-me7-scrapie-infected-mice
#15
Soochan Kim, Sinsuk Han, Taehyun Kim, Jeehoon Nam, Yong-Sun Kim, Eun-Kyoung Choi, Mi-Yeon Kim
We previously reported that mice intracerebrally inoculated with the mouse-adapted scrapie strain ME7 have markedly diminished T zones in the spleen due to the decreased expression of CCL19 and CCL21. In addition, follicular dendritic cell networks in germinal centers were larger in ME7-infected spleens compared to uninfected spleens. As an extension of that study, we set out to determine how ME7 infection affects spleen structure and follicular helper T (Tfh) cell responses in mice. For this study, mice were intraperitoneally inoculated with brain homogenate of the ME7 inoculum and spleens were analyzed 50, 130, and 200 days after inoculation and compared with those from uninfected mice...
April 4, 2018: Prion
https://www.readbyqxmd.com/read/29616049/regulation-of-the-development-and-function-of-b-cells-by-zbtb-transcription-factors
#16
REVIEW
Can Zhu, Ge Chen, Ying Zhao, Xiao-Ming Gao, Jun Wang
The large ZBTB family comprises a diverse group of transcriptional factors. Several ZBTB proteins have emerged as critical factors that regulate the lineage commitment, differentiation, and function of lymphoid cells as well as many other developmental events. For instance, dysfunctions of ZBTB20 or ZBTB24 have been linked to multisystem failures in humans. Within the B-cell lineage, BCL6, ZBTB7A, ZBTB17, and ZBTB1 regulate the development/differentiation of B cells in both bone marrow and peripheral lymphoid organs, while ZBTB20 and ZBTB32 seem to mainly impact the maintenance of terminal plasma cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29581544/double-hit-or-dual-expression-of-myc-and-bcl2-in-primary-cutaneous-large-b-cell-lymphomas
#17
Sarah Menguy, Eric Frison, Martina Prochazkova-Carlotti, Stephane Dalle, Olivier Dereure, Serge Boulinguez, Sophie Dalac, Laurent Machet, Caroline Ram-Wolff, Laurence Verneuil, Audrey Gros, Béatrice Vergier, Marie Beylot-Barry, Jean-Philippe Merlio, Anne Pham-Ledard
In nodal diffuse large B-cell lymphoma, the search for double-hit with MYC and BCL2 and/or BCL6 rearrangements or for dual expression of BCL2 and MYC defines subgroups of patients with altered prognosis that has not been evaluated in primary cutaneous large B-cell lymphoma. Our objectives were to assess the double-hit and dual expressor status in a cohort of 44 patients with primary cutaneous large B-cell lymphoma according to the histological subtype and to evaluate their prognosis relevance. The 44 cases defined by the presence of more than 80% of large B-cells in the dermis corresponded to 21 primary cutaneous follicle centre lymphoma with large cell morphology and 23 primary cutaneous diffuse large B-cell lymphoma, leg type...
March 26, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29567771/gene-expression-profiling-reveals-a-close-relationship-between-follicular-lymphoma-grade-3a-and-3b-but-distinct-profiles-of-follicular-lymphoma-grade-1-and-2
#18
Heike Horn, Christian Kohler, Raphael Witzig, Markus Kreuz, Ellen Leich, Wolfram Klapper, Michael Hummel, Markus Loeffler, Lorenz Trümper, Rainer Spang, Andreas Rosenwald, German Ott
A linear progression model of follicular lymphomas (FL) FL1, FL2 and FL3A has been favored, since FL 3A often coexist with a FL1/2 component. FL3B, in contrast, is thought to be more closely related to diffuse large B-cell lymphoma (DLBCL), and both FL3B and DLBCL are often simultaneously present in one tumor (DLBCL/FL3B). To obtain more detailed insights into FL progression, comprehensive analysis of a well-defined set of FL1/2 (n=22), FL3A (n=16), FL3B (n=6), DLBCL/FL3B (n=9) and germincal center B-cell(GCB)-type DLBCL (n=45) was performed using gene expression profiling, immunohistochemical staining and genetic analysis by fluorescence in situ hybridization (FISH)...
March 22, 2018: Haematologica
https://www.readbyqxmd.com/read/29563728/aggressive-angioimmunoblastic-t-cell-lymphomas-aitl-with-soft-tissue-extranodal-mass-varied-histopathological-patterns-with-peripheral-blood-bone-marrow-and-splenic-involvement-and-review-of-literature
#19
Tanushri Mukherjee, Rajat Dutta, S Pramanik
Angioimmunoblastic T cell lymphoma (AITL) is a peripheral T cell non-Hodgkin lymphoma with an aggressive fatal course and it has varied clinical presentation with an uncommon presentation when they present as soft tissue masses or when there is spill in the peripheral blood or there are composite lymphomas that are rare presentations. Common presentations include lymphadenopathy, fever and systemic symptoms, hemolytic anemias, skin rashes, and rheumatoid arthritis. The classical histopathology is absence of follicles in lymph nodes with presence of high endothelial venules and the tumor cells of small to medium-sized lymphocytes with pale cytoplasm mixed with reactive T cells...
March 2018: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29563292/activation-and-induction-of-antigen-specific-t-follicular-helper-cells-play-a-critical-role-in-live-attenuated-influenza-vaccine-induced-human-mucosal-anti-influenza-antibody-response
#20
Abdullah Aljurayyan, Suttida Puksuriwong, Muhammad Ahmed, Ravi Sharma, Madhan Krishnan, Salil Sood, Katherine Davies, Devika Rajashekar, Sam Leong, Paul S McNamara, Stephen Gordon, Qibo Zhang
There is increasing interest recently in developing intranasal vaccines against respiratory tract infections. The antibody response is critical for vaccine-induced protection, and T follicular helper cells (TFH ) are considered important for mediating the antibody response. Most data supporting the role for TFH in the antibody response are from animal studies, and direct evidence from humans is limited, apart from the presence of TFH -like cells in blood. We studied the activation and induction of TFH and their role in the anti-influenza antibody response induced by a live-attenuated influenza vaccine (LAIV) in human nasopharynx-associated lymphoid tissue (NALT)...
June 1, 2018: Journal of Virology
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