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https://www.readbyqxmd.com/read/28740454/genetic-counselling-brca1-2-status-and-clinico-pathologic-characteristics-of-patients-with-ovarian-cancer-before-50-years-of-age
#1
Mirjam Cvelbar, Marko Hocevar, Srdjan Novakovic, Vida Stegel, Andraz Perhavec, Mateja Krajc
BACKGROUND: In Slovenia like in other countries, till recently, personal history of epithelial ovarian cancer (EOC) has not been included among indications for genetic counselling. Recent studies reported up to 17% rate of germinal BRCA1/2 mutation (gBRCA1/2m) within the age group under 50 years at diagnosis. The original aim of this study was to invite to the genetic counselling still living patients with EOC under 45 years, to offer gBRCA1/2m testing and to perform analysis of gBRCA1/2m rate and of clinico-pathologic characteristics...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28738086/an-essential-ebv-latent-antigen-3c-binds-bcl6-for-targeted-degradation-and-cell-proliferation
#2
Yonggang Pei, Shuvomoy Banerjee, Hem Chandra Jha, Zhiguo Sun, Erle S Robertson
The latent EBV nuclear antigen 3C (EBNA3C) is required for transformation of primary human B lymphocytes. Most mature B-cell malignancies originate from malignant transformation of germinal center (GC) B-cells. The GC reaction appears to have a role in malignant transformation, in which a major player of the GC reaction is Bcl6, a key regulator of this process. We now demonstrate that EBNA3C contributes to B-cell transformation by targeted degradation of Bcl6. We show that EBNA3C can physically associate with Bcl6...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28735299/identification-of-the-first-dominant-mutation-of-lama5-gene-causing-a-complex-multisystem-syndrome-due-to-dysfunction-of-the-extracellular-matrix
#3
Simone Sampaolo, Filomena Napolitano, Alfonsina Tirozzi, Mafalda Giovanna Reccia, Luca Lombardi, Olimpia Farina, Adriano Barra, Ferdinando Cirillo, Mariarosa Anna Beatrice Melone, Fernando Gianfrancesco, Giuseppe Di Iorio, Teresa Esposito
BACKGROUND: The laminin alpha 5 gene (LAMA5) plays a master role in the maintenance and function of the extracellular matrix (ECM) in mammalian tissues, which is critical in developmental patterning, stem cell niches, cancer and genetic diseases. Its mutations have never been reported in human disease so far. The aim of this study was to associate the first mutation in LAMA5 gene to a novel multisystem syndrome. METHODS: A detailed characterisation of a three-generation family, including clinical, biochemical, instrumental and morphological analysis, together with genetics and expression (WES and RNAseq) studies, was performed...
July 22, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28707393/malaria-epstein-barr-virus-infection-and-the-pathogenesis-of-burkitt-s-lymphoma
#4
Anthony R Mawson, Suvankar Majumdar
A geographical and causal connection has long been recognized between malaria, Epstein-Barr virus (EBV) infection and Burkitt's lymphoma (BL), but the underlying mechanisms remain obscure. Potential clues are that the malaria parasite Plasmodium falciparum selectively absorbs vitamin A from the host and depends on it for its biological activities; secondly, alterations in vitamin A (retinoid) metabolism have been implicated in many forms of cancer, including BL. The first author has proposed that the merozoite-stage malaria parasite, emerging from the liver, uses its absorbed vitamin A as a cell membrane destabilizer to invade the red blood cells, causing anemia and other signs and symptoms of the disease as manifestations of an endogenous form of hypervitaminosis A (Mawson AR, Path Global Health 2013;107(3):122-9)...
July 13, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28689360/regulatory-myeloid-cells-an-underexplored-continent-in-b-cell-lymphomas
#5
REVIEW
Mikael Roussel, Jonathan M Irish, Cedric Menard, Faustine Lhomme, Karin Tarte, Thierry Fest
In lymphomas arising from the germinal center, prognostic factors are linked to the myeloid compartment. In particular, high circulating monocyte or myeloid-derived suppressor cell counts are associated with poor prognosis for patients with high-grade B-cell lymphomas. Macrophages with an M2 phenotype are enriched within lymphoma tumors. However, the M1/M2 nomenclature is now deprecated and the clinical impact of this phenotype remains controversial. Across cancer types, myeloid cells are primarily thought to function as immune suppressors during tumor initiation and maintenance, but the biological mechanisms behind the myeloid signatures are still poorly understood in germinal center B-cell lymphomas...
July 8, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28688665/b-cells-in-tertiary-lymphoid-structures-are-associated-with-favorable-prognosis-in-gastric-cancer
#6
Chie Sakimura, Hiroaki Tanaka, Takahiro Okuno, Soichiro Hiramatsu, Kazuya Muguruma, Kosei Hirakawa, Hideki Wanibuchi, Masaichi Ohira
BACKGROUND: The role of tumor-infiltrating B cells in the tumor microenvironment is still unclear. Recent studies have reported that B cells and tertiary lymphoid structures (TLSs) that contain B cell follicles correlate with the favorable prognosis of cancer patients. The aim of this study was to investigate the association between tumor-infiltrating B cells and clinicopathological features in gastric cancer. METHODS: Tumor blocks were obtained from 226 patients with stage Ib to stage IV gastric cancer...
July 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28664270/curcin-c-a-novel-type-i-ribosome-inactivating-protein-from-the-post-germinating-cotyledons-of-jatropha-curcas
#7
Yangxue Zhang, Qian Yang, Chenyang Li, Mengmeng Ding, Xueyan Lv, Chengqiu Tao, Hongwu Yu, Fang Chen, Ying Xu
A novel type I ribosome-inactivating protein (RIP), designated as curcin C, was purified from Jatropha curcas, an important feedback source of bio-fuel. Molecular mass and isoelectric point of curcin C were 31.398 kDa and 7.12 as detected by MALTI-TOF assay and capillary electrophoresis assay, respectively. N-terminal sequence and LC-MS/MS analyses confirmed that curcin C is a type I RIP having high homology, but not the exactly the same with curcin, another type 1 RIP isolated from the endosperm of J. curcas...
June 29, 2017: Amino Acids
https://www.readbyqxmd.com/read/28647921/proteome-profile-of-aspergillus-terreus-conidia-at-germinating-stage-identification-of-probable-virulent-factors-and-enzymes-from-mycotoxin-pathways
#8
Raman Thakur, Jata Shankar
Aspergillus terreus is an emerging opportunistic fungal pathogen that causes invasive aspergillosis in immunocompromised individuals. The main risk group of individuals for this organism is leukopenic patients, individuals having cancers, bone marrow transplant persons and those who have immunological disorders. The lack of early diagnostic marker for A. terreus and intrinsic resistance to Amphotericin B, further limits the successful therapy of A. terreus-associated infections. The germination of inhaled conidia is the key step to establish successful invasion in host tissues or organs...
June 24, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28643319/-progress-of-the-application-of-optical-coherence-tomography-in-gastrointestinal-tumor-surgery
#9
Yongsheng Li, Hao Liu, Haipeng Huang, Yu Zhu, Haijun Deng, Jiang Yu, Site Luo, Li Huo, Li Lin, Huikai Xie, Guoxin Li
Optical coherence tomography (OCT) is a real-time, cross-sectional optical imaging technology. It is analogous to ultrasonography, except that OCT uses light waves instead of sound waves, and can provide three-dimensional morphological images of living tissues with a micrometer resolution. Through the use of endoscopes, needles, catheters and laparoscopes, OCT has demonstrated tremendous imaging potential in tumor surgery. The current studies suggest that OCT has potential for clinical applications in the following fields of gastrointestinal tumor surgery: (1) Early tumor detection and diagnosis: OCT can distinguish differences between polyp tissue, normal tissue and malignant tissue...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28570278/cxcl13-producing-tfh-cells-link-immune-suppression-and-adaptive-memory-in-human-breast-cancer
#10
Chunyan Gu-Trantien, Edoardo Migliori, Laurence Buisseret, Alexandre de Wind, Sylvain Brohée, Soizic Garaud, Grégory Noël, Vu Luan Dang Chi, Jean-Nicolas Lodewyckx, Céline Naveaux, Hugues Duvillier, Stanislas Goriely, Denis Larsimont, Karen Willard-Gallo
T follicular helper cells (TFH cells) are important regulators of antigen-specific B cell responses. The B cell chemoattractant CXCL13 has recently been linked with TFH cell infiltration and improved survival in human cancer. Although human TFH cells can produce CXCL13, their immune functions are currently unknown. This study presents data from human breast cancer, advocating a role for tumor-infiltrating CXCL13-producing (CXCR5-) TFH cells, here named TFHX13 cells, in promoting local memory B cell differentiation...
June 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/28567003/evidence-of-a-cell-surface-role-for-hsp90-complex-proteins-mediating-neuroblast-migration-in-the-subventricular-zone
#11
Leo M Miyakoshi, Diego Marques-Coelho, Luiz E R De Souza, Flavia R S Lima, Vilma R Martins, Silvio M Zanata, Cecilia Hedin-Pereira
In most mammalian brains, the subventricular zone (SVZ) is a germinative layer that maintains neurogenic activity throughout adulthood. Neuronal precursors arising from this region migrate through the rostral migratory stream (RMS) and reach the olfactory bulbs where they differentiate and integrate into the local circuitry. Recently, studies have shown that heat shock proteins have an important role in cancer cell migration and blocking Hsp90 function was shown to hinder cell migration in the developing cerebellum...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28562153/increased-frequencies-of-circulating-and-tumor-resident-v%C3%AE-1-t-cells-in-patients-with-diffuse-large-b-cell-lymphoma
#12
Emilie Reboursiere, Anne-Claire Gac, Anthony Garnier, Véronique Salaun, Oumedaly Reman, Anne-Dominique Pham, Quentin Cabrera, Kathy Khoy, Jean-Pierre Vilque, Christophe Fruchart, Sylvain Chantepie, Hyacinthe Johnson-Ansah, Margaret Macro, Stéphane Cheze, Khaled Benabed, Jean-Baptiste Mear, Xavier Troussard, Gandhi Damaj, Brigitte Le Mauff, Olivier Toutirais
Gamma-delta (γδ) T cells contribute to the innate immune response against cancer. In samples of 20 patients upon DLBCL diagnosis, we found that Vδ1(+) T cells were the major γδ T cell subset in tumors and PBMCs of patients, while Vδ2 T cells were preponderant in PBMCs of healthy subjects. Interestingly, the germinal center (GC) subtype was associated with an increase in Vδ1(+) T cells in tumors, whereas the non-GC subtype was associated with a lower frequency of γδ T cells. While circulating Vδ1(+) T cells of patients or HSs mostly exhibited a naïve phenotype, the majority of tumor Vδ1(+) T cells showed a central memory phenotype...
May 31, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28553292/asct2-slc1a5-deficient-mice-have-normal-b-cell-development-proliferation-and-antibody-production
#13
Etienne Masle-Farquhar, Angelika Bröer, Mehmet Yabas, Anselm Enders, Stefan Bröer
SLC1A5 (solute carrier family 1, member 5) is a small neutral amino acid exchanger that is upregulated in rapidly proliferating lymphocytes but also in many primary human cancers. Furthermore, cancer cell lines have been shown to require SLC1A5 for their survival in vitro. One of SLC1A5's primary substrates is the immunomodulatory amino acid glutamine, which plays an important role in multiple key processes, such as energy supply, macromolecular synthesis, nucleotide biosynthesis, redox homeostasis, and resistance against oxidative stress...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28464914/efficacy-of-radiotherapy-for-the-treatment-of-cystic-echinococcosis-in-naturally-infected-sheep
#14
Rui Mao, Wen-Bao Zhang, Hong-Zhi Qi, Tao Jiang, Ge Wu, Peng-Fei Lu, Abudula Ainiwaer, Ge Shang, Lin Xu, Jie Hao, Xi Shou, Hai-Tao Li, Jun Li, Song-An Zhang, Yong-Xing Bao, Hao Wen
BACKGROUND: Radiotherapy is commonly used to treat cancers. To date, there has been no study focusing on the effects of radiotherapy on hydatid disease in large animals. In this study, we aim to investigate the efficiency and safety of radiotherapy for treating hydatid disease caused by Echinococcus granulosus in naturally infected sheep. METHODS: Ultrasound was used to screen naturally infected sheep in an echinococcosis endemic area in Xinjiang, China. A computer tomography (CT) scan confirmed the presence of hydatid cysts...
May 3, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28438623/ezh2-overexpression-in-primary-gastrointestinal-diffuse-large-b-cell-lymphoma-and-its-association-with-the-clinicopathological-features
#15
Yang Liu, Kangjie Yu, Mingyang Li, Kaixuan Zeng, Jie Wei, Xia Li, Yixiong Liu, Danhui Zhao, Linni Fan, Zhou Yu, Yingmei Wang, Zengshan Li, Wei Zhang, Qingxian Bai, Qingguo Yan, Ying Guo, Zhe Wang, Shuangping Guo
Gastrointestinal diffuse large B cell lymphoma (GI DLBCL) is the most common gastrointestinal lymphoma, Enhancer of zeste homolog 2 (EZH2) have been implicated in the pathogenesis of several cancers. However, EZH2 has not been studied in GI DLBCL. Thus, we investigated EZH2 expression and EZH2 Y641 mutation in 100 GI DLBCL specimens by immunohistochemistry and sequencing. In addition, trimethylated H3K27 (H3K27me3), BCL2, c-MYC, and Ki-67 expression and Helicobacter pylori infection were detected, and BCL2 and c-MYC gene translocation were assessed...
April 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28432871/mir-24-3p-is-overexpressed-in-hodgkin-lymphoma-and-protects-hodgkin-and-reed-sternberg-cells-from-apoptosis
#16
Ye Yuan, Joost Kluiver, Jasper Koerts, Debora de Jong, Bea Rutgers, F Reeny Abdul Razak, Martijn Terpstra, Boudewijn E Plaat, Ilja M Nolte, Arjan Diepstra, Lydia Visser, Klaas Kok, Anke van den Berg
miRNAs play important roles in biological processes, such as proliferation, metabolism, differentiation, and apoptosis, whereas altered expression levels contribute to diseases, such as cancers. We identified miRNAs with aberrant expression in Hodgkin lymphoma (HL) and investigated their role in pathogenesis. Small RNA sequencing revealed 84 significantly differentially expressed miRNAs in HL cell lines as compared to germinal center B cells. Three up-regulated miRNAs-miR-23a-3p, miR-24-3p, and miR-27a-3p-were derived from one primary miRNA transcript...
June 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28429361/pathologic-character-and-diagnosis-of-female-primary-genital-system-diffuse-large-b-cell-lymphoma
#17
H Cheng, X Tang, J Cheng, B Zhang, Y-L Zhang, W-Q Wang, P Teng
OBJECTIVE: We investigated the clinicopathological characteristics and immunophenotype of female genital system diffuse large B-cell lymphoma (DLBCL) in order to improve diagnosis and therapy efficacy. PATIENTS AND METHODS: The clinicopathologic features of 13 cases with primary DLBCL of the female genital system were studied retrospectively. According to the immunophenotypes, 10 cases were classified as germinal center B-cell-like DLBCL and the other 3 as non-center B-cell-like DLBCL...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28428103/characteristics-and-clinical-implications-of-reactive-germinal-centers-in-the-bone-marrow
#18
Rose Lou Marie C Agbay, L Jeffrey Medeiros, Joseph D Khoury, Alireza Salem, Carlos E Bueso-Ramos, Sanam Loghavi
Reactive germinal centers (GCs) in the bone marrow (BM) have been described in patients with autoimmune disorders, infections, malignancies and following certain drug therapies, or as an isolated finding without obvious underlying disease. In this study, we describe the clinical conditions in which reactive GCs occur in BM samples, and their topography and accompanying laboratory and ancillary findings in the setting of a cancer center. We identified 32 BM specimens with reactive GCs with an estimated frequency of <0...
April 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28423735/the-long-non-coding-rna-nonhsag026900-predicts-prognosis-as-a-favorable-biomarker-in-patients-with-diffuse-large-b-cell-lymphoma
#19
Shuangtao Zhao, Shuangsang Fang, Yanhua Liu, Xixi Li, Shengyou Liao, Jinwen Chen, Jingjia Liu, Lianhe Zhao, Hui Li, Wei Zhou, Wenzhi Shen, Xiaoli Dong, Rong Xiang, Luhua Wang, Yi Zhao
Long non-coding RNAs are known to be involved in cancer progression, but their biological functions and prognostic values are still largely unexplored in diffuse large B-cell lymphoma. In this study, long non-coding RNAs expression was characterized in 1,403 samples including normal and diffuse large B-cell lymphoma by repurposing 7 microarray datasets. Compared with any stage of normal B cells, NONHSAG026900 expression was significantly decreased in tumor samples. And in germinal center B-cell subtype, the significantly higher expression of NONHSAG026900 indicated it was a favorable prognosis biomarker...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28419960/preferentially-enhancing-anti-cancer-isothiocyanates-over-glucosinolates-in-broccoli-sprouts-how-nacl-and-salicylic-acid-affect-their-formation
#20
Azadeh Esfandiari, Ali Saei, Marian J McKenzie, Adam J Matich, Mesbah Babalar, Donald A Hunter
Broccoli (Brassica oleracea L. var. italica) sprouts contain glucosinolates (GLs) that when hydrolysed yield health promoting isothiocyanates such as sulforaphane (SF). SF content can be increased by salt (NaCl) stress, although high salt concentrations negatively impact plant growth. Salicylic acid (SA) treatments can attenuate the negative effects of salt on growth. To test whether sprout isothiocyanate content could be elevated without sprout growth being compromised, broccoli seed were germinated and grown for seven days in salt (0, 80 and 160 mM) alone and in combination with 100 μM SA...
June 2017: Plant Physiology and Biochemistry: PPB
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