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https://www.readbyqxmd.com/read/28931237/histone-methyltransferase-set8-epigenetically-reprograms-host-immune-responses-to-assist-mycobacterial-survival
#1
Vikas Singh, Praveen Prakhar, R S Rajmani, Kasturi Mahadik, Salik Miskat Borbora, Kithiganahalli Narayanaswamy Balaji
NQO1 and TRXR1 are important host reductases implicated in the regulation of inflammation and apoptosis. Although the transcriptional machinery governing these processes have been extensively investigated, the associated epigenetic regulatory events remain unclear. Here, we report that SET8, a histone H4 lysine 20 monomethylase (H4K20me1), is highly induced during Mycobacterium tuberculosis infection that orchestrates immune evasion strategies through the induction of NQO1 and TRXR1 in vivo. SET8, along with FoxO3a, mediates an active NQO1-PGC1-α complex, which promotes the anti-inflammatory M2 macrophage phenotype, and assists TRXR1-regulated arrest of tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931210/long-noncoding-rna-pcat-1-promotes-invasion-and-metastasis-via-the-mir-129-5p-hmgb1-signaling-pathway-in-hepatocellular-carcinoma
#2
Deyuan Zhang, Jinyu Cao, Qingling Zhong, Liangtao Zeng, Chang Cai, Lang Lei, Wen Zhang, Fanrong Liu
OBJECTIVE: The long non-coding RNA (lncRNA) prostate cancer-associated transcript 1(PCAT-1) has been shown to be dysregulated and exert vital roles in tumorigenesis and progression of various malignancies. However, the precise molecular mechanism in the metastasis and invasion of HCC remain unclear. METHODS: The expression levels of PCAT1 derived from human HCC tissues and cell lines were analyzed through quantitative real-time PCR. QRT-PCR was also applied to detect the expression of HMGB1 and miR-129-5p...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28931075/excitability-is-increased-in-hippocampal-ca1-pyramidal-cells-of-fmr1-knockout-mice
#3
M Angeles Luque, Pablo Beltran-Matas, M Carmen Marin, Blas Torres, Luis Herrero
Fragile X syndrome (FXS) is caused by a failure of neuronal cells to express the gene encoding the fragile mental retardation protein (FMRP). Clinical features of the syndrome include intellectual disability, learning impairment, hyperactivity, seizures and anxiety. Fmr1 knockout (KO) mice do not express FMRP and, as a result, reproduce some FXS behavioral abnormalities. While intrinsic and synaptic properties of excitatory cells in various part of the brain have been studied in Fmr1 KO mice, a thorough analysis of action potential characteristics and input-output function of CA1 pyramidal cells in this model is lacking...
2017: PloS One
https://www.readbyqxmd.com/read/28931067/in-vivo-imaging-system-for-explants-analysis-a-new-approach-for-assessment-of-cell-transplantation-effects-in-large-animal-models
#4
Weronika Zarychta-Wiśniewska, Anna Burdzinska, Radosław Zagozdzon, Bartosz Dybowski, Marta Butrym, Zdzisław Gajewski, Leszek Paczek
INTRODUCTION: Despite spectacular progress in cellular transplantology, there are still many concerns about the fate of transplanted cells. More preclinical studies are needed, especially on large animal models, to bridge the translational gap between basic research and the clinic. Herein, we propose a novel approach in analysis of cell transplantation effects in large animals explants using in vivo imaging system (IVIS®) or similar equipment. MATERIAL AND METHODS: In the in vitro experiment cells labeled with fluorescent membrane dyes: DID (far red) or PKH26 (orange) were visualized with IVIS®...
2017: PloS One
https://www.readbyqxmd.com/read/28931056/heterogeneity-in-the-expression-and-subcellular-localization-of-polyol-monosaccharide-transporter-genes-in-lotus-japonicus
#5
Lu Tian, Leru Liu, Yehu Yin, Mingchao Huang, Yanbo Chen, Xinlan Xu, Pingzhi Wu, Meiru Li, Guojiang Wu, Huawu Jiang, Yaping Chen
Polyols can serve as a means for the translocation of carbon skeletons and energy between source and sink organs as well as being osmoprotective solutes and antioxidants which may be involved in the resistance of some plants to biotic and abiotic stresses. Polyol/Monosaccharide transporter (PLT) proteins previously identified in plants are involved in the loading of polyols into the phloem and are reported to be located in the plasma membrane. The functions of PLT proteins in leguminous plants are not yet clear...
2017: PloS One
https://www.readbyqxmd.com/read/28931053/identification-and-molecular-characterization-of-a-metagenome-derived-l-lysine-decarboxylase-gene-from-subtropical-soil-microorganisms
#6
Jie Deng, Hua Gao, Zhen Gao, Huaxian Zhao, Ying Yang, Qiaofen Wu, Bo Wu, Chengjian Jiang
L-lysine decarboxylase (LDC, EC 4.1.1.18) is a key enzyme in the decarboxylation of L-lysine to 1,5-pentanediamine and efficiently contributes significance to biosynthetic capability. Metagenomic technology is a shortcut approach used to obtain new genes from uncultured microorganisms. In this study, a subtropical soil metagenomic library was constructed, and a putative LDC gene named ldc1E was isolated by function-based screening strategy through the indication of pH change by L-lysine decarboxylation. Amino acid sequence comparison and homology modeling indicated the close relation between Ldc1E and other putative LDCs...
2017: PloS One
https://www.readbyqxmd.com/read/28931052/improvement-of-dyspnea-after-bariatric-surgery-is-associated-with-increased-expiratory-reserve-volume-a-prospective-follow-up-study-of-45-patients
#7
Louis Boissière, Jeanne-Marie Perotin-Collard, Eric Bertin, Isabelle Gaubil, Ana Diaz Cives, Coralie Barbe, Sandra Dury, Julie Nardi, François Lebargy, Gaëtan Deslée, Claire Launois
OBJECTIVES: To assess the effects of bariatric surgery in patients with obesity on dyspnea and to analyze the relationships between improvement of dyspnea after bariatric surgery and changes in pulmonary function, especially Expiratory Reserve Volume (ERV) which is the lung volume abnormality most frequently associated with obesity. METHODS: Forty-five patients (5 males/40 females, mean Body Mass Index = 46.2 ± 6.8 kg/m2) were evaluated before and 6 to 12 months after bariatric surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28931014/phonological-memory-in-sign-language-relies-on-the-visuomotor-neural-system-outside-the-left-hemisphere-language-network
#8
Yuji Kanazawa, Kimihiro Nakamura, Toru Ishii, Toshihiko Aso, Hiroshi Yamazaki, Koichi Omori
Sign language is an essential medium for everyday social interaction for deaf people and plays a critical role in verbal learning. In particular, language development in those people should heavily rely on the verbal short-term memory (STM) via sign language. Most previous studies compared neural activations during signed language processing in deaf signers and those during spoken language processing in hearing speakers. For sign language users, it thus remains unclear how visuospatial inputs are converted into the verbal STM operating in the left-hemisphere language network...
2017: PloS One
https://www.readbyqxmd.com/read/28930988/application-of-laser-micro-irradiation-for-examination-of-single-and-double-strand-break-repair-in-mammalian-cells
#9
Nathaniel W Holton, Joel F Andrews, Natalie R Gassman
Highly coordinated DNA repair pathways exist to detect, excise and replace damaged DNA bases, and coordinate repair of DNA strand breaks. While molecular biology techniques have clarified structure, enzymatic functions, and kinetics of repair proteins, there is still a need to understand how repair is coordinated within the nucleus. Laser micro-irradiation offers a powerful tool for inducing DNA damage and monitoring the recruitment of repair proteins. Induction of DNA damage by laser micro-irradiation can occur with a range of wavelengths, and users can reliably induce single strand breaks, base lesions and double strand breaks with a range of doses...
September 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930985/visualizing-angiogenesis-by-multiphoton-microscopy-in-vivo-in-genetically-modified-3d-plga-nhap-scaffold-for-calvarial-critical-bone-defect-repair
#10
Jian Li, Holger Jahr, Wei Zheng, Pei-Gen Ren
The reconstruction of critically sized bone defects remains a serious clinical problem because of poor angiogenesis within tissue-engineered scaffolds during repair, which gives rise to a lack of sufficient blood supply and causes necrosis of the new tissues. Rapid vascularization is a vital prerequisite for new tissue survival and integration with existing host tissue. The de novo generation of vasculature in scaffolds is one of the most important steps in making bone regeneration more efficient, allowing repairing tissue to grow into a scaffold...
September 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930980/immunostaining-for-dna-modifications-computational-analysis-of-confocal-images
#11
Ashley H Ramsawhook, Lara C Lewis, Maria Eleftheriou, Abdulkadir Abakir, Paulina Durczak, Robert Markus, Seema Rajani, Nicholas R F Hannan, Beth Coyle, Alexey Ruzov
For several decades, 5-methylcytosine (5mC) has been thought to be the only DNA modification with a functional significance in metazoans. The discovery of enzymatic oxidation of 5mC to 5-hydroxymethylcytosine (5hmC), 5-formylcytosine (5fC) and 5-carboxylcytosine (5caC) as well as detection of N6-methyladenine (6mA) in the DNA of multicellular organisms provided additional degrees of complexity to the epigenetic research. According to a growing body of experimental evidence, these novel DNA modifications may play specific roles in different cellular and developmental processes...
September 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930975/streamlined-single-cell-tcr-isolation-and-generation-of-retroviral-vectors-for-in-vitro-and-in-vivo-expression-of-human-tcrs
#12
Maran L Sprouse, Gabriele Blahnik, Thomas Lee, Natalie Tully, Pinaki Benarjee, Eddie A James, Maria J Redondo, Matthew L Bettini, Maria Bettini
Although, several methods for sequencing of paired T cell receptor (TCR) alpha and beta chains from single T cells have been developed, none so far have been conducive to downstream in vivo functional analysis of TCR heterodimers. We have developed an improved protocol based on a two-step multiplex-nested PCR, which results in a PCR product that spans entire variable regions of a human TCR alpha and beta chains. By identifying unique restriction sites and incorporating them into the PCR primers, we have made the PCR product compatible with direct sub-cloning into the template retroviral vector...
September 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930970/screening-of-critical-genes-and-micrornas-in-blood-samples-of-patients-with-ruptured-intracranial-aneurysms-by-bioinformatic-analysis-of-gene-expression-data
#13
Lijuan Bo, Bo Wei, Zhanfeng Wang, Daliang Kong, Zheng Gao, Zhuang Miao
BACKGROUND This study aimed to identify more potential genes and miRNAs associated with the pathogenesis of intracranial aneurysms (IAs). MATERIAL AND METHODS The dataset of GSE36791 (accession number) was downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were screened for in the blood samples from patients with ruptured IAs and controls, followed by functional and pathway enrichment analyses. In addition, gene co-expression network was constructed and significant modules were extracted from the network by WGCNA R package...
September 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28930961/impact-of-a-novel-phosphoinositol-3-kinase-inhibitor-in-preventing-mitochondrial-dna-damage-and-damage-associated-molecular-pattern-accumulation-results-from-the-biochronicity-project
#14
George Edward Black, Kyle K Sokol, Donald M Moe, Jon D Simmons, David Muscat, Victor Pastukh, Gina Capley, Olena Gorodnya, Mykhaylo Ruchko, Mark B Roth, Mark Gillespie, Matthew J Martin
BACKGROUND: Despite improvements in the management of severely injured patients, development of multiple organ dysfunction syndrome (MODS) remains a morbid complication of traumatic shock. One of the key attributes of MODS is a profound bioenergetics crisis, for which the mediators and mechanisms are poorly understood. We hypothesized that metabolic uncoupling using an experimental phosphoinositol-3 kinase (PI3-K) inhibitor, LY294002 (LY), may prevent mitochondrial abnormalities that lead to the generation of mitochondrial DNA (mtDNA) damage and the release of mtDNA damage-associated molecular patterns (DAMPs)...
October 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28930939/preventing-mistransfusions-an-evaluation-of-institutional-knowledge-and-a-response
#15
Nickolas MacDougall, Fanglong Dong, Latoya Broussard, Mark E Comunale
BACKGROUND: Blood product mistransfusions occur when a process error causes transfusion of incompatible blood products. These events are known sources of negative patient outcomes. One such event demonstrated an institutional knowledge gap and an opportunity to reduce this source of transfusion errors. The focus of this study was to evaluate the application of point of care cognitive aids to bridge potentially lethal knowledge gaps in blood product to patient compatibility. METHODS: A patient-donor ABO antigen compatibility grid for red blood cells (RBC) and fresh frozen plasma (FFP) was developed for creation of a cognitive aid and a blood product safety quiz...
September 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28930915/microvesicle-subsets-in-sepsis-due-to-community-acquired-pneumonia-compared-to-faecal-peritonitis
#16
Hazem M S Lashin, Suchita Nadkarni, Silvia Oggero, Hefin R Jones, Julian C Knight, Charles J Hinds, Mauro Perretti
RATIONALE: Microvesicles (MV) act as a non-soluble means of inter-cellular communication, with effector roles in disease pathogenesis and potentially as biomarkers. Previously, we reported that neutrophil MV expressing alpha-2-macroglobulin (A2MG) are protective in experimental sepsis and associate with survival in a small cohort of patients with sepsis due to community acquired pneumonia (CAP). OBJECTIVES: To characterise MV profiles in sepsis due to CAP or faecal peritonitis (FP) and determine their relation to outcome...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28930871/reliability-and-measurement-error-of-tensiomyography-to-assess-mechanical-muscle-function-a-systematic-review
#17
Saúl Martín-Rodríguez, Irineu Loturco, Angus M Hunter, David Rodríguez-Ruiz, Diego Munguia-Izquierdo
Interest in studying mechanical skeletal muscle function through tensiomyography (TMG) has increased in recent years. This systematic review aimed to (a) report the reliability and measurement error of all TMG parameters [i.e., maximum radial displacement of the muscle belly (Dm), contraction time (Tc), delay time (Td), half-relaxation time (½ Tr), and sustained contraction time (Ts)] and (b) to provide critical reflection on how to perform accurate and appropriate measurements for informing clinicians, exercise professionals, and researchers...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28930861/targeted-gene-panel-sequencing-for-early-onset-inflammatory-bowel-disease-and-chronic-diarrhea
#18
Britt-Sabina Petersen, Dietrich August, Renate Abt, Moudjahed Alddafari, Lida Atarod, Safa Baris, Hemant Bhavsar, Florian Brinkert, Mary Buchta, Alla Bulashevska, Ronnie Chee, Ana I Cordeiro, Naghi Dara, Gregor Dückers, Aisha Elmarsafy, Natalie Frede, Nermeen Galal, Patrick Gerner, Erik-Oliver Glocker, Sigune Goldacker, Jutta Hammermann, Peter Hasselblatt, Zuzana Havlicekova, Katrin Hübscher, Milos Jesenak, Neslihan E Karaca, Elif Karakoc-Aydiner, Mahboubeh M Kharaghani, Sara S Kilic, Ayca Kiykim, Christoph Klein, Christian Klemann, Robin Kobbe, Daniel Kotlarz, Martin W Laass, T Ronan Leahy, Mehrnaz Mesdaghi, Sally Mitton, João F Neves, Birol Öztürk, Luis F Pereira, Jan Rohr, Jessica L R Restrepo, Gunda Ruzaike, Nadia Saleh, Suranjith Seneviratne, Ebru Senol, Carsten Speckmann, Daniel Tegtmeyer, Paul Thankam, Jutte van der Werff Ten Bosch, Horst von Bernuth, Sebastian Zeissig, Yvonne Zeissig, Andre Franke, Bodo Grimbacher
BACKGROUND: In contrast to adult-onset inflammatory bowel disease (IBD), where many genetic loci have been shown to be involved in complex disease etiology, early-onset IBD (eoIBD) and associated syndromes can sometimes present as monogenic conditions. As a result, the clinical phenotype and ideal disease management in these patients often differ from those in adult-onset IBD. However, due to high costs and the complexity of data analysis, high-throughput screening for genetic causes has not yet become a standard part of the diagnostic work-up of eoIBD patients...
September 19, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28930844/health-related-quality-of-life-assessment-in-surgical-patients-with-papillary-thyroid-carcinoma-a-single-center-analysis-from-mainland-china
#19
Juxiang Gou, Wenjie Cheng, Jianyong Lei, Qian Pan, Wei You, Ming Cai, Huairong Tang, Yali Lei, Zhihui Li, Rixiang Gong, Jinqiang Zhu
Even with a favorable prognosis, the health-related quality of life (HRQoL) of papillary thyroid carcinoma (PTC) patients remains unclear and conflicting. Thus, in the present study, we compared the HRQoL of PTC patients with that of the general population (GP).The study was performed in our thyroid and parathyroid surgery department, and 186 PTC patients who had undergone thyroidectomy were included. The exclusion criteria were an age < 18 years, no follow-up, and the presence of other malignant neoplasms...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930842/type-4b-hereditary-hemochromatosis-associated-with-a-novel-mutation-in-the-slc40a1-gene-a-case-report-and-a-review-of-the-literature
#20
Wei Zhang, Tingxia Lv, Jian Huang, Xiaojuan Ou
RATIONALE: Hereditary hemochromatosis can be divided into HFE- and non-HFE-related based on genetic mutations in different genes. HFE-related hemochromatosis is the most common inherited genetic disease in European populations but rare in Asia-pacific region. Recently, non-HFE-related hemochromatosis has been reported in patients from the Asian countries. PATIENT CONCERNS: We report the case of a 48-year-old Chinese Han woman who presented with abnormal liver function, diabetes mellitus, hyperferritinemia, and high transferrin saturation, with severe iron overload in parenchymal cells, Kupffer cells, and periportal fibrosis on liver biopsy...
September 2017: Medicine (Baltimore)
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