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https://www.readbyqxmd.com/read/27907250/the-transcriptional-co-activator-bob1-is-associated-with-pathologic-b-cell-responses-in-autoimmune-tissue-inflammation
#1
Maria J Levels, Melissa N Van Tok, Tineke Cantaert, Juan D Cañete, Frans G M Kroese, Kristine Germar, Hergen Spits, Dominique L P Baeten, Nataliya G Yeremenko
OBJECTIVE: The molecular mechanisms steering abnormal B cell responses in autoimmune diseases remain poorly understood. In this study we aimed to identify molecular switches controlling pathological B cell responses in rheumatoid arthritis (RA). METHODS: Candidate molecules were identified by gene expression profiling of RA synovitis and validated by qPCR and immunohistochemistry. B cell-specific expression was confirmed by immunofluorescence, immunoblotting and flow cytometry...
December 1, 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27890096/entrance-and-exit-wounds-of-high-velocity-bullet-an-autopsy-analysis-in-the-event-of-dispersing-the-mass-rally-in-bangkok-thailand-may-2010
#2
Vichan Peonim, Smith Srisont, Jitta Udnoon, Sompong Wongwichai, Arisa Thapon, Wisarn Worasuwannarak
Fatal mass casualties by high velocity bullets (HVBs) are rare events in peaceful countries. This study presents 27 forensic autopsy cases with 32 shots fired by 5.56×45mm. HVB (M-16 rifle bullets) during the dispersing the mass rally in Bangkok Thailand, May 2010. It was found that twenty-three (71.88%) typical entrance HVB wounds had round sizes less than the bullet diameters. Most entrance wounds had microtears but no collar abrasion since a HVB has a small streamlined spitzer tip and full metal jacket...
November 2016: Legal Medicine
https://www.readbyqxmd.com/read/27889897/growth-differentiation-factor-15-is-a-novel-diagnostic-biomarker-of-mitochondrial-diseases
#3
Xinbo Ji, Lizhen Zhao, Kunqian Ji, Yuying Zhao, Wei Li, Rui Zhang, Ying Hou, Jianqiang Lu, Chuanzhu Yan
The present study aimed to investigate whether serum growth differentiation factor 15 concentration is a valuable and reliable diagnostic biomarker of mitochondrial diseases. We examined consecutive patients with mitochondrial diseases, in comparison with patients with non-mitochondrial disease neuromuscular disorders and healthy controls. The serum concentrations of growth differentiation factor 15 were measured by ELISA, and compared with those of FGF21, lactate, and creatine kinase. We also evaluated the correlations between growth differentiation factor 15 concentrations and the Newcastle Mitochondrial Disease Adult Scale, numbers of ragged-red fibers, and COX-negative fibers in the biopsied muscles...
November 26, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27883081/v-d-j-recombination-process-and-the-pre-b-to-immature-b-cells-transition-are-altered-in-fanca-mice
#4
Thuy Vy Nguyen, Patrycja Pawlikowska, Virginie Firlej, Filippo Rosselli, Saïd Aoufouchi
B-lymphocytes in the bone marrow (BM) must generate a functional B-cell receptor and overcome the negative selection induced by reactivity with autoantigens. Two rounds of DNA recombination are required for the production of functional immunoglobulin heavy (Ig-HCs) and light (LCs) chains necessary for the continuation of B-lymphocyte development in the BM. Both rounds depend on the joint action of recombination activating gene-1 (RAG-1) and RAG-2 endonucleases with the DNA non-homologous end-joining pathway...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27883065/cycles-of-circadian-illuminance-are-sufficient-to-entrain-and-maintain-circadian-locomotor-rhythms-in-drosophila
#5
Eunjoo Cho, Ji Hye Oh, Euna Lee, Young Rag Do, Eun Young Kim
Light at night disrupts the circadian clock and causes serious health problems in the modern world. Here, we show that newly developed four-package light-emitting diodes (LEDs) can provide harmless lighting at night. To quantify the effects of light on the circadian clock, we employed the concept of circadian illuminance (CIL). CIL represents the amount of light weighted toward the wavelengths to which the circadian clock is most sensitive, whereas visual illuminance (VIL) represents the total amount of visible light...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27880903/mirnas-are-essential-for-the-regulation-of-the-pi3k-akt-foxo-pathway-and-receptor-editing-during-b%C3%A2-cell-maturation
#6
Maryaline Coffre, David Benhamou, David Rieß, Lili Blumenberg, Valentina Snetkova, Marcus J Hines, Tirtha Chakraborty, Sofia Bajwa, Kari Jensen, Mark M W Chong, Lelise Getu, Gregg J Silverman, Robert Blelloch, Dan R Littman, Dinis Calado, Doron Melamed, Jane A Skok, Klaus Rajewsky, Sergei B Koralov
B cell development is a tightly regulated process dependent on sequential rearrangements of immunoglobulin loci that encode the antigen receptor. To elucidate the role of microRNAs (miRNAs) in the orchestration of B cell development, we ablated all miRNAs at the earliest stage of B cell development by conditionally targeting the enzymes critical for RNAi in early B cell precursors. Absence of any one of these enzymes led to a block at the pro- to pre-B cell transition due to increased apoptosis and a failure of pre-B cells to proliferate...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27863852/the-rag-recombinase-beyond-breaking
#7
Chloé Lescale, Ludovic Deriano
DNA double-strand breaks (DSBs) are commonly seen as lesions that threaten genome integrity and contribute to cancer and aging processes. However, in the context of antigen receptor gene assembly, known as V(D)J recombination, DSBs are obligatory intermediates that allow the establishment of genetic diversity and adaptive immunity. V(D)J recombination is initiated when the lymphoid-restricted recombination-activating genes RAG1 and RAG2 are expressed and form a site-specific endonuclease (the RAG nuclease or RAG recombinase)...
November 15, 2016: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/27863423/cancer-cell-ccl5-mediates-bone-marrow-independent-angiogenesis-in-breast-cancer
#8
Michael John Sax, Christin Gasch, Vineel Rag Athota, Ruth Freeman, Parisa Rasighaemi, David Elton Westcott, Christopher John Day, Iva Nikolic, Benjamin Elsworth, Ming Wei, Kelly Rogers, Alexander Swarbrick, Vivek Mittal, Normand Pouliot, Albert Sleiman Mellick
It has recently been suggested that the chemokine receptor (CCR5) is required for bone marrow (BM) derived endothelial progenitor cell (EPC) mediated angiogenesis. Here we show that suppression of either cancer cell produced CCL5, or host CCR5 leads to distinctive vascular and tumor growth defects in breast cancer. Surprisingly, CCR5 restoration in the BM alone was not sufficient to rescue the wild type phenotype, suggesting that impaired tumor growth associated with inhibiting CCL5/CCR5 is not due to defects in EPC biology...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27853745/right-adrenal-gland-prospective-evaluation-through-transgastric-endoscopic-ultrasound-an-alternative-approach
#9
Pedro C Figueiredo, Pedro Pinto-Marques, Ines Almeida, Pedro C Gomes, David Serra
Background and aims: Endoscopic ultrasound (EUS) guided right adrenal gland (RAG) evaluation is frequently unsuccessful and, when feasible, requires a cumbersome maneuver through the duodenum. In our experience, the use of a recent ultrasound platform has enabled transgastric detection of the RAG with a simple maneuver. The aim of this study was to determine the RAG transgastric EUS detection rate and identify predictive factors for failure. Methods: Consecutive patients referred to EUS in a single center were prospectively included over a 6-month period...
November 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27845714/beyond-focal-pests-impact-of-a-neonicotinoid-seed-treatment-and-resistant-soybean-lines-on-a-non-target-arthropod
#10
Tülin Özsisli, Deirdre A Prischmann-Voldseth
Integrated pest management (IPM) tactics may effectively control focal pests, but it is also important to test the compatibility of different tactics, and consider non-target organisms. We investigated the effects of a neonicotinoid seed treatment and Rag resistance genes used for soybean aphid (Aphis glycines Matsumura) control on reproduction of a non-target herbivore (twospotted spider mite, Tetranychus urticae Koch) in short-term greenhouse experiments. We also examined interactions between spider mites and a specialist phytoseiid mite [Ambylseius fallacis (Garman)] and assessed the effects of a co-occurring opportunistic omnivore [Frankliniella occidentalis (Pergande)] by including thrips density as a covariate...
November 11, 2016: Insects
https://www.readbyqxmd.com/read/27825771/riches-in-rags-revealing-the-v-d-j-recombinase-through-high-resolution-structures
#11
REVIEW
Karla K Rodgers
Development of the adaptive immune system is dependent on V(D)J recombination, which forms functional antigen receptor genes through rearrangement of component gene segments. The V(D)J recombinase, comprising recombination-activating proteins RAG1 and RAG2, guides the initial DNA cleavage events to the recombination signal sequence (RSS), which flanks each gene segment. Although the enzymatic steps for RAG-mediated endonucleolytic activity were established over two decades ago, only recently have high-resolution structural studies of the catalytically active core regions of the RAG proteins shed light on conformational requirements for the reaction...
November 5, 2016: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/27816331/a-new-mutation-in-the-mitochondrial-trna-pro-gene-associated-with-early-onset-neuromuscular-phenotype-and-ragged-red-fibers
#12
Godelieve Morel, Sylvie Bannwarth, Annabelle Chaussenot, Aline Cano, Konstantina Fragaki, Samira Ait-El-Mkadem, Cecile Rouzier, Andre Maues De Paula, Brigitte Chabrol, Veronique Paquis-Flucklinger
An 11-year-old boy with psychomotor delay, exercise intolerance, ptosis and growth delay had a muscle biopsy showing typical mitochondrial alterations (60% of ragged-red fibers and 90% of cytochrome-c oxidase-deficient fibers). Next-generation sequencing revealed a novel heteroplasmic mutation (m.15958A>T) in the MTTP gene that encodes tRNA(Pro). The mutation was not present in the accessible non-muscle tissues of the patient's asymptomatic mother. Mutations in the rarely affected MTTP gene are responsible for different clinical presentations...
September 16, 2016: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27815425/stat6-regulates-the-development-of-eosinophilic-versus-neutrophilic-asthma-in-response-to-alternaria-alternata
#13
Andrea C Valladao, Charles W Frevert, Lisa K Koch, Daniel J Campbell, Steven F Ziegler
Human asthma is a heterogeneous disease characterized by the expression of both Th2 and Th17 cytokines. In vitro and in vivo studies have shown a reciprocal regulation between Th2 and Th17 pathways, suggesting a potential induction of neutrophil-promoting Th17 inflammation in the absence of a Th2 response. Alternaria alternata is a clinically relevant allergen that is associated with severe and fatal asthma exacerbations. Exposure to A. alternata is characterized by a predominant Th2 response, but can also induce the production of factors associated with Th17 responses (e...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27815009/comparison-of-intra-articular-findings-and-clinical-features-between-patients-with-symptomatic-anterior-instability-after-recurrent-shoulder-subluxation-and-dislocation
#14
Sang-Jin Shin, Young-Won Ko, Yoon Sang Jeon, Juyeob Lee, Rag Gyu Kim, Hyungki Baek
PURPOSE: The purpose of this study was to compare the prevalence of concomitant intra-articular pathologies and clinical manifestations after arthroscopic stabilization between patients with symptomatic anterior instabilities following recurrent shoulder subluxations and dislocations. METHODS: Among patients who underwent arthroscopic stabilization, 28 patients who experienced shoulder subluxations (subluxation group, 26.7 ± 1.8 years) and 84 who had shoulder dislocations (dislocation group, 25...
November 1, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27808398/homozygous-deletion-of-rag1-rag2-and-5-region-traf6-causes-severe-immune-suppression-and-atypical-osteopetrosis
#15
Monika Weisz Hubshman, Lina Basel-Vanagaite, Aviva Krauss, Osnat Konen, Yael Levy, Ben Zion Garty, Pola Smirin-Yosef, Idit Maya, Irina Lagovsky, Ellen Taub, Daphna Marom, Dafna Gaash, Keren Shichrur, Smadar Avigad, Lucille Hayman Manzur, Anna Villa, Cristina Sobacchi, Mordechai Shohat, Isaac Yaniv, Jerry Stein
Mutations of several genes have been implicated in autosomal recessive osteopetrosis (OP), a disease caused by impaired function and differentiation of osteoclasts. Severe combined immune deficiencies (SCID) can likewise result from different genetic mutations. We report two siblings with SCID and an atypical phenotype of OP. A biallelic microdeletion encompassing the 5' region of TRAF6, RAG1 and RAG2 genes was identified. TRAF6, a tumor necrosis factor receptor-associated family member, plays an important role in T-cell signaling and in RANKL-dependent osteoclast differentiation and activation but its role in human OP has not been previously reported...
November 3, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27801984/expression-of-immune-genes-in-skin-of-channel-catfish-immunized-with-live-theronts-of-ichthyophthirius-multifiliis
#16
Gabriel S A Moreira, Craig A Shoemaker, Dunhua Zhang, De-Hai Xu
The objective of this study was to evaluate differential expression of innate and adaptive immune genes, including immunoglobulin, immune cell receptor, cytokine, inflammatory protein, toll-like receptors (TLR) and recombination-activating gene (RAG) in skin from channel catfish, Ictalurus punctatus after immunization with live theronts of Ichthyophthirius multifiliis (Ich) by intraperitoneal injection. The immunized catfish showed significantly higher survival rate (95%) than those of mock immunized control fish (0% survival) after the theront challenge...
November 1, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27801680/broad-spectrum-antibodies-against-self-antigens-and-cytokines-in-rag-deficiency
#17
Jolan E Walter, Lindsey B Rosen, Krisztian Csomos, Jacob M Rosenberg, Divij Mathew, Marton Keszei, Boglarka Ujhazi, Karin Chen, Yu Nee Lee, Irit Tirosh, Kerry Dobbs, Waleed Al-Herz, Morton J Cowan, Jennifer Puck, Jack J Bleesing, Michael S Grimley, Harry Malech, Suk See De Ravin, Andrew R Gennery, Roshini S Abraham, Avni Y Joshi, Thomas G Boyce, Manish J Butte, Kari C Nadeau, Imelda Balboni, Kathleen E Sullivan, Javeed Akhter, Mehdi Adeli, Reem A El-Feky, Dalia H El-Ghoneimy, Ghassan Dbaibo, Rima Wakim, Chiara Azzari, Paolo Palma, Caterina Cancrini, Kelly Capuder, Antonio Condino-Neto, Beatriz T Costa-Carvalho, Joao Bosco Oliveira, Chaim Roifman, David Buchbinder, Attila Kumanovics, Jose Luis Franco, Tim Niehues, Catharina Schuetz, Taco Kuijpers, Christina Yee, Janet Chou, Michel J Masaad, Raif Geha, Gulbu Uzel, Rebecca Gelman, Steven M Holland, Mike Recher, Paul J Utz, Sarah K Browne, Luigi D Notarangelo
No abstract text is available yet for this article.
November 1, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27784136/the-role-of-apolipoprotein-n-acyl-transferase-lnt-in-the-lipidation-of-factor-h-binding-protein-of-neisseria-meningitidis-strain-mc58-and-its-potential-as-a-drug-target
#18
Rag da Silva, C P Churchward, A V Karlyshev, O Eleftheriadou, A K Snabaitis, M R Longman, A Ryan, R Griffin
BACKGROUND AND PURPOSE: The level of cell surface expression of the meningococcal vaccine antigen, Factor H binding protein (FHbp) varies between and within strains and this limits the breadth of strains that can be targeted by FHbp-based vaccines. The molecular pathway dictating expression of FHbp at the cell surface, including its lipidation, sorting to the outer membrane and export, and the potential regulation of this pathway have not been investigated until now. This knowledge will aid our evaluation of FHbp vaccines...
October 26, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27766099/nfat2-regulates-generation-of-innate-like-cd8-t-lymphocytes-and-cd8-t-lymphocytes-responses
#19
Emilia Pachulec, Vanessa Neitzke-Montinelli, João P B Viola
Nuclear factor of activated T cells (NFAT) 2 null mutant mice die in utero of cardiac failure, precluding analysis of the role of NFAT2 in lymphocyte responses. Only the NFAT2(-/-)/Rag-1(-/-) chimeric mice model gave insight into the role of NFAT2 transcription factor in T lymphocyte development, activation, and differentiation. As reports are mainly focused on the role of NFAT2 in CD4(+) T lymphocytes activation and differentiation, we decided to investigate NFAT2's impact on CD8(+) T lymphocyte responses...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27762641/the-immediate-effects-of-robot-assistance-on-energy-consumption-and-cardiorespiratory-load-during-walking-compared-to-walking-without-robot-assistance-a-systematic-review
#20
Nina Lefeber, Eva Swinnen, Eric Kerckhofs
PURPOSE: The integration of sufficient cardiovascular stress into robot-assisted gait (RAG) training could combine the benefits of both RAG and aerobic training. The aim was to summarize literature data on the immediate effects of RAG compared to walking without robot-assistance on metabolic-, cardiorespiratory- and fatigue-related parameters. METHODS: PubMed and Web of Science were searched for eligible articles till February 2016. Means, SDs and significance values were extracted...
October 20, 2016: Disability and Rehabilitation. Assistive Technology
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