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https://www.readbyqxmd.com/read/29445868/induction-of-systemic-resistance-in-tomato-against-botrytis-cinerea-by-n-decanoyl-homoserine-lactone-via-jasmonic-acid-signaling
#1
Zhangjian Hu, Shujun Shao, Chenfei Zheng, Zenghui Sun, Junying Shi, Jingquan Yu, Zhenyu Qi, Kai Shi
N-decanoyl-homoserine lactone activates plant systemic resistance against Botrytis cinerea in tomato plants, which is largely dependent on jasmonic acid biosynthesis and signal transduction pathways. Rhizosphere bacteria secrete N-acylated-homoserine lactones (AHLs), a type of specialized quorum-sensing signal molecule, to coordinate their population density during communication with their eukaryotic hosts. AHLs behave as low molecular weight ligands that are sensed by plants and promote the host's resistance against foliar pathogens...
February 14, 2018: Planta
https://www.readbyqxmd.com/read/29427012/-blood-pressure-targets-the-lower-the-better-does-not-suit-all
#2
REVIEW
U Hoffmann
BACKGROUND: The systolic blood pressure intervention trial (SPRINT) published in 2015 has opened up new discussions on whether a lower blood pressure target as recommended by the current guidelines would be better for some patient groups. OBJECTIVES: To review patient groups in which lower blood pressure targets would not be better. MATERIALS AND METHODS: The results of SPRINT, its post-hoc and subgroup analyses, other studies and newer studies, as well as metaanalyses on the topic of blood pressure targets are reviewed and discussed...
February 9, 2018: Der Internist
https://www.readbyqxmd.com/read/29419530/challenges-and-opportunities-for-high-grade-b-cell-lymphoma-with-myc-and-bcl2-and-or-bcl6-rearrangement-double-hit-lymphoma
#3
Dongfeng Zeng, Aakash Desai, Fangfang Yan, Tiejun Gong, Haige Ye, Makhdum Ahmed, Krystle Nomie, Jorge Romaguera, Richard Champlin, Shaoying Li, Michael Wang
The most common subtype of non-Hodgkin lymphoma, diffuse large B-cell lymphoma, is cured in approximately two thirds of patients after initial therapy. The remaining one-third of patients who suffer relapse or become refractory have very poor survival outcomes despite salvage chemotherapy with or without stem cell transplantation. A considerable proportion of relapsed or refractory large B cells belong to the WHO subtype known as high-grade B-cell lymphoma with rearrangement of MYC and BCL2 and/or BCL6, also known as double-hit lymphoma (DHL)...
February 6, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29416618/preclinical-efficacy-and-biological-effects-of-the-oral-proteasome-inhibitor-ixazomib-in-diffuse-large-b-cell-lymphoma
#4
Wei Liu, Juan Chen, Archito T Tamayo, Changgeng Ruan, Li Li, Shouhao Zhou, Chan Shen, Ken H Young, Jason Westin, Richard E Davis, Shimin Hu, Leonard J Medeiros, Richard J Ford, Lan V Pham
Despite advances in deciphering the molecular pathogenesis of diffuse large B-cell lymphoma (DLBCL), patients with relapsed/refractory disease, particularly those with adverse genetic features (e.g., mutated p53 or double hit lymphoma (DHL)) have very poor prognoses, and effective therapies are lacking. In this study we examined the preclinical efficacy and associated biological effects of the first oral proteasome inhibitor, ixazomib, in DLBCL in vitro and in vivo models. We demonstrated that ixazomib exhibited anti-tumor activities in 28 representative DLBCL cell lines, 10 primary DLBCL samples, and a DHL xenotransplant mouse model, at clinically achievable drug concentrations...
January 2, 2018: Oncotarget
https://www.readbyqxmd.com/read/29392398/generation-and-characterisation-of-decellularised-human-corneal-limbus
#5
Kristina Spaniol, Joana Witt, Sonja Mertsch, Maria Borrelli, Gerd Geerling, Stefan Schrader
PURPOSE: Limbal epithelial stem cells (LESC) reside in a niche in the corneo-scleral transition zone. Deficiency leads to pain, corneal opacity, and eventually blindness. LESC transplantation of ex-vivo expanded human LESC on a carrier such as human amniotic membrane is a current treatment option. We evaluated decellularised human limbus (DHL) as a potential carrier matrix for the transplantation of LESC. METHODS: Human corneas were obtained from the local eye bank...
February 1, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29386360/therapeutic-synergy-between-tigecycline-and-venetoclax-in-a-preclinical-model-of-myc-bcl2-double-hit-b-cell-lymphoma
#6
Micol Ravà, Aleco D'Andrea, Paola Nicoli, Ilaria Gritti, Giulio Donati, Mirko Doni, Marco Giorgio, Daniela Olivero, Bruno Amati
High-grade B cell lymphomas with concurrent activation of the MYC and BCL2 oncogenes, also known as double-hit lymphomas (DHL), show dismal prognosis with current therapies. MYC activation sensitizes cells to inhibition of mitochondrial translation by the antibiotic tigecycline, and treatment with this compound provides a therapeutic window in a mouse model of MYC-driven lymphoma. We now addressed the utility of this antibiotic for treatment of DHL. BCL2 activation in mouse Eμ-myc lymphomas antagonized tigecycline-induced cell death, which was specifically restored by combined treatment with the BCL2 inhibitor venetoclax...
January 31, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29380901/the-influence-of-agents-differentiating-hl-60-cells-toward-granulocyte-like-cells-on-their-ability-to-release-neutrophil-extracellular-traps
#7
Aneta Manda-Handzlik, Weronika Bystrzycka, Małgorzata Wachowska, Sandra Sieczkowska, Anna Stelmaszczyk-Emmel, Urszula Demkow, Olga Ciepiela
Studies on neutrophil extracellular traps (NETs) are challenging as neutrophils live shortly and easily become activated. Thus, availability of a cell line model closely resembling the functions of peripheral blood neutrophils would be advantageous. Our purpose was to find a compound that most effectively differentiates HL-60 (human promyelocytic leukemia) cells toward granulocyte-like cells able to release NETs. HL-60 cells were differentiated with all-trans retinoic acid (ATRA), dimethyl sulfoxide (DMSO) or dimethylformamide (DMF) and stimulated with phorbol 12-myristate 13-acetate (PMA) or calcium ionophore A23187 (CI)...
January 30, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29353886/the-bet-bromodomain-inhibitor-cpi203-overcomes-resistance-to-abt-199-venetoclax-by-downregulation-of-bfl-1-a1-in-in-vitro-and-in-vivo-models-of-myc-bcl2-double-hit-lymphoma
#8
A Esteve-Arenys, J G Valero, A Chamorro-Jorganes, D Gonzalez, V Rodriguez, I Dlouhy, I Salaverria, E Campo, D Colomer, A Martinez, G Rymkiewicz, P Pérez-Galán, A Lopez-Guillermo, G Roué
High-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements, mostly known as double-hit lymphoma (DHL), is a rare entity characterized by morphologic and molecular features between Burkitt lymphoma and the clinically manageable diffuse large B-cell lymphoma (DLBCL). DHL patients usually undergo a rapidly progressing clinical course associated with resistance to standard chemo-immunotherapy. As a consequence, the prognosis of this entity is particularly poor with a median overall survival inferior to 1 year...
January 22, 2018: Oncogene
https://www.readbyqxmd.com/read/29338562/targeted-microbubbles-with-ultrasound-irradiation-and-pd-1-inhibitor-to-increase-antitumor-activity-in-b-cell-lymphoma
#9
Shiya Zheng, Dan Song, Xiaoxiao Jin, Haijun Zhang, Mohanad Aldarouish, Yan Chen, Cailian Wang
AIM: Severe cardiac toxicity of doxorubicin and an immunosuppressive tumor micro-environment become main obstacles for the effective treatment of B-cell lymphoma. In this research, rituximab-conjugated and doxorubicin-loaded microbubbles (RDMs) were designed for exploring a combination approach of targeted microbubbles with ultrasound (US) irradiation and PD-1 inhibitor to overcome obstacles mentioned above. METHODS: In vivo studies were performed on SU-DHL-4 cell-grafted mice and ex vivo studies were performed on CD20+ human SU-DHL-4 cells and human T cells...
January 17, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29310838/a-leukemic-double-hit-follicular-lymphoma-associated-with-a-complex-variant-translocation-t-8-14-18-q24-q32-q21-involving-bcl2-myc-and-igh
#10
Daisuke Minakata, Kazuya Sato, Takashi Ikeda, Yumiko Toda, Shoko Ito, Kiyomi Mashima, Kento Umino, Hirofumi Nakano, Ryoko Yamasaki, Kaoru Morita, Yasufumi Kawasaki, Miyuki Sugimoto, Chihiro Yamamoto, Masahiro Ashizawa, Kaoru Hatano, Iekuni Oh, Shin-Ichiro Fujiwara, Ken Ohmine, Hirotoshi Kawata, Kazuo Muroi, Ikuo Miura, Yoshinobu Kanda
Double-hit lymphoma (DHL) is defined as lymphoma with concurrent BCL2 and MYC translocations. While the most common histological subtype of DHL is diffuse large B-cell lymphoma, the present patient had leukemic follicular lymphoma (FL). A 52-year-old man was admitted to our hospital due to general fatigue and cervical and inguinal lymph node swelling. The patient was leukemic and the pathological diagnosis of the inguinal lymph node was FL grade 1. Chromosomal analysis revealed a complex karyotype including a rare three-way translocation t(8;14;18)(q24;q32;q21) involving the BCL2, MYC, and IGH genes...
January 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29228374/quantitative-trait-loci-mapping-of-western-corn-rootworm-coleoptera-chrysomelidae-host-plant-resistance-in-two-populations-of-doubled-haploid-lines-in-maize-zea-mays-l
#11
Martin O Bohn, Juan J Marroquin, Sherry Flint-Garcia, Kenton Dashiell, David B Willmot, Bruce E Hibbard
Over the last 70 yr, more than 12,000 maize accessions have been screened for their level of resistance to western corn rootworm, Diabrotica virgifera virgifera (LeConte; Coleoptera: Chrysomelidae), larval feeding. Less than 1% of this germplasm was selected for initiating recurrent selection or other breeding programs. Selected genotypes were mostly characterized by large root systems and superior root regrowth after root damage caused by western corn rootworm larvae. However, no hybrids claiming native (i...
December 8, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29224062/relationship-between-caries-experience-and-demarcated-hypomineralised-lesions-including-mih-in-the-permanent-dentition-of-15-year-olds
#12
Jan Kühnisch, Lamiaa Kabary, Yuri Malyk, Katrin Rothmaier, Isabel Metz, Reinhard Hickel, Joachim Heinrich, David Manton, Marie Standl
OBJECTIVE: This cross-sectional study compared the caries experience in 15-year-olds with and without demarcated hypomineralised lesions (DHL) in permanent teeth. MATERIAL AND METHODS: One thousand three hundred and two 15-year-old adolescents from two ongoing birth cohorts (GINIplus15 and LISAplus15) were examined to determine non-cavitated carious lesions (NCCL) and the DMF index. Furthermore, DHL was scored on all permanent teeth/surfaces according to the molar-incisor hypomineralisation criteria of the European Academy of Paediatric Dentistry (MIH/EAPD)...
December 9, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29205095/lexical-access-ability-and-cognitive-predictors-of-speech-recognition-in-noise-in-adult-cochlear-implant-users
#13
Marre W Kaandorp, Cas Smits, Paul Merkus, Joost M Festen, S Theo Goverts
Not all of the variance in speech-recognition performance of cochlear implant (CI) users can be explained by biographic and auditory factors. In normal-hearing listeners, linguistic and cognitive factors determine most of speech-in-noise performance. The current study explored specifically the influence of visually measured lexical-access ability compared with other cognitive factors on speech recognition of 24 postlingually deafened CI users. Speech-recognition performance was measured with monosyllables in quiet (consonant-vowel-consonant [CVC]), sentences-in-noise (SIN), and digit-triplets in noise (DIN)...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/29199519/outcomes-of-da-epoch-r-induction-plus-autologous-transplant-consolidation-for-double-hit-lymphoma
#14
Andy I Chen, Jessica T Leonard, Craig Y Okada, Nathan D Gay, Kari Chansky, Guang Fan, Jennifer B Dunlap, Philipp W Raess, Rita M Braziel, Alex Stentz, Richard T Maziarz
High-grade B cell lymphoma with MYC and BCL2 rearrangements (double hit) has a poor prognosis with standard R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone). We report here a treatment algorithm of DA-EPOCH-R (dose-adjusted etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin, rituximab) followed by BEAM (carmustine, etoposide, cytarabine, melphalan) autologous transplant in 36 cases of previously untreated double hit lymphoma (DHL) from 2010 to 2015. A high risk International Prognostic Index (IPI) was present in 42% of cases...
December 3, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29196080/outcomes-after-allogeneic-stem-cell-transplantation-in-patients-with-double-hit-and-double-expressor-lymphoma
#15
Alex F Herrera, Scott J Rodig, Joo Y Song, Young Kim, Gabriel K Griffin, Dongyun Yang, Liana Nikolaenko, Matthew Mei, Victoria Bedell, Paola Dal Cin, Christine Pak, Edwin P Alyea, Lihua E Budde, Robert Chen, Yi-Bin Chen, Wing C Chan, Corey S Cutler, Vincent T Ho, John Koreth, Amrita Krishnan, Joyce L Murata-Collins, Sarah Nikiforow, Joycelynne Palmer, German A Pihan, Raju Pillai, Leslie Popplewell, Steven T Rosen, Tanya Siddiqi, Aliyah R Sohani, Jasmine Zain, Larry W Kwak, Dennis D Weisenburger, David M Weinstock, Robert J Soiffer, Joseph H Antin, Stephen J Forman, Auayporn P Nademanee, Philippe Armand
Double-hit lymphomas (DHLs) and double-expressor lymphomas (DELs) are associated with resistance to frontline and salvage immunochemotherapy, as well as autologous stem cell transplantation (SCT). We hypothesized that allogeneic SCT (alloSCT) could overcome the chemoresistance associated with DEL/DHL. We retrospectively studied the impact of DEL/DHL status in a multicenter cohort of patients who underwent alloSCT for relapsed/refractory (rel/ref) aggressive B cell non-Hodgkin lymphoma (B-NHL). Seventy-eight patients transplanted at 3 centers in whom tumor tissue was available for immunohistochemistry and fluorescence in situ hybridization were enrolled; 47% had DEL and 13% had DHL...
November 28, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29166501/primary-cutaneous-t-cell-lymphoma-experience-from-the-peruvian-national-cancer-institute
#16
Rosana Ruiz, Zaida Morante, Raul Mantilla, Luis Mas, Luis Casanova, Henry L Gomez
BACKGROUND: Primary cutaneous T-cell lymphomas constitute a heterogeneous and rare group of diseases with regional particularities in Latin America. OBJECTIVE: To determine the clinicopathological features, relative frequency and survival among patients from a Peruvian institution. METHODS: Primary cutaneous T-cell lymphomas were defined based on the absence of extracutaneous disease at diagnosis. Classification was performed following the 2008 World Health Organization Classification of Neoplasms of the Hematopoietic and Lymphoid tissues...
September 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29115587/anticancer-effect-of-quinacrine-on-diffuse-large-b%C3%A2-cell-lymphoma-via-inhibition-of-msi2%C3%A2-numb-signaling-pathway
#17
Shujun Yang, Lixia Sheng, Kaihong Xu, Yi Wang, Huiling Zhu, Ping Zhang, Qitian Mu, Guifang Ouyang
Diffuse large B‑cell lymphoma (DLBCL) is the most common subtype of non‑Hodgkin's lymphoma. Despite improvements in the clinical outcomes of DLBCL, ~30% of patients will develop relapse/refractory disease. Therefore, novel therapeutic drugs have been investigated to improve disease outcomes. Previous studies have revealed the anticancer effects of quinacrine (QC) on tumor cells in vitro, although its role in human DLBCL is yet to be identified. The present study sought to examine the cytotoxic effect of QC on DLBCL cells...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29042970/effects-of-17-dmag-on-diffuse-large-b-cell-lymphoma-cell-apoptosis
#18
Jia-Jia Li, Jing-Jing Zhang, Xiu Wang, Zi-Min Sun
17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) is a water soluble, semisynthetic derivative of endotoxin that has anticancer effects. The aim of the present study was to determine whether 17-DMAG enhances the apoptosis of lymphoma cells in diffuse large B-cell lymphoma. Apoptosis was induced in SU-DHL-4 diffuse large B-cell lymphoma cells treated with 17-DMAG, as evaluated by MTT assay and flow cytometry analysis. Apoptosis-associated protein levels were assessed using western blotting, and the results indicated that B-cell lymphoma 2 (Bcl-2)-associated protein X (Bax) was upregulated, whereas heat shock protein family A member 5 (HSPA5) and Bcl-2 were downregulated...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042405/sterol-methyltransferase-a-target-for-anti-amoeba-therapy-towards-transition-state-analog-and-suicide-substrate-drug-design
#19
Medhanie E Kidane, Boden H Vanderloop, Wenxu Zhou, Crista D Thomas, Emilio Ramos, Ujjal Singha, Minu Chaudhuri, W David Nes
Ergosterol biosynthesis pathways essential to pathogenic protozoa growth (Haubrich, B. A. et al. 2015. J. Lipid Res. 56: 331-341) and absent from the human host offer new chokepoint targets. Here, we present characterization and cell-based interference of Acanthamoeba spp sterol 24/28methylases (SMT) that catalyze the committed step in C28- and C29-sterol synthesis. Intriguingly, our kinetic analyses suggest 24SMT prefers plant cycloartenol while 28SMT prefers 24(28)methylene lophenol in similar fashion to the substrate preferences of land plant SMT1 and SMT2...
October 17, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28976590/mycobacterial-cord-factor-enhances-migration-of-neutrophil-like-hl-60-cells-by-prolonging-akt-phosphorylation
#20
Wook-Bin Lee, Ji-Jing Yan, Ji-Seon Kang, Seok Chung, Lark Kyun Kim
Trehalose 6,6'-dimycolate (TDM), or cord factor, is a crucial stimulus of immune responses during Mycobacterium tuberculosis infection. Although TDM has immuno-stimulatory properties, including adjuvant activity and the ability to induce granuloma formation, the mechanisms underlying these remain unknown. We hypothesized that TDM stimulates transendothelial migration of neutrophils, which are the first immune cells to infiltrate the tissue upon infection. In this study, it was shown that TDM enhances N-formylmethionyl-leucyl-phenylalanine (fMLP)-induced chemotaxis and transendothelial movement by prolonging AKT phosphorylation in human neutrophils...
October 4, 2017: Microbiology and Immunology
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