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https://www.readbyqxmd.com/read/29156869/impact-of-ggcx-polymorphisms-on-warfarin-dose-requirements-in-atrial-fibrillation-patients
#1
Nian-Xin Jiang, Ying-Hui Xu, Jing-Wen Xia, Bing Jiang, Yan-Song Li
Background/aim: Warfarin is a common anticoagulant with large interindividual differences and a narrow therapeutic range. The polymorphisms of gamma-glutamyl carboxylase (GGCX) are important genetic factors for warfarin dose requirements. Materials and methods: Polymerase chain reaction and direct sequencing methods were used to detect the GGCX rs699664 genotype in 215 atrial fibrillation (AF) patients with warfarin administration. The effects on warfarin dose by different genotypes were analyzed. A warfarin dosing algorithm was developed based on age, height, CYP2C9, VKORC1, and GGCX genotype...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29156836/the-role-of-rak-in-the-regulation-of-stability-and-function-of-brca1
#2
Jung-Lye Kim, Geun-Hyoung Ha, Loredana Campo, Mitchell F Denning, Tarun B Patel, Clodia Osipo, Shiaw-Yih Lin, Eun-Kyoung Breuer
BRCA1 is an important player in the DNA damage response signaling, and its deficiency results in genomic instability. A complete loss or significantly reduced BRCA1 protein expression is often found in sporadic breast cancer cases despite the absence of genetic or epigenetic aberrations, suggesting the existence of other regulatory mechanisms controlling BRCA1 protein expression. Herein, we demonstrate that Fyn-related kinase (Frk)/Rak plays an important role in maintaining genomic stability, possibly in part through positively regulating BRCA1 protein stability and function via tyrosine phosphorylation on BRCA1 Tyr1552...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156802/efficacy-and-safety-of-first-line-pemetrexed-plus-carboplatin-followed-by-single-agent-pemetrexed-maintenance-in-elderly-chinese-patients-with-non-squamous-non-small-cell-lung-cancer
#3
Xinmin Zhao, Hui Yu, Jing Zhao, Xianghua Wu, Si Sun, Zhiguo Luo, Huijie Wang, Jie Qiao, Jianhua Chang, Jialei Wang
Chemotherapy with pemetrexed plus carboplatin followed by pemetrexed maintenance therapy is a first-line regimen for patients with advanced non-squamous non-small-cell lung cancer. This phase II clinical study investigated the efficacy and safety of this regimen in older patients (aged ≥65 years) with advanced non-squamous non-small-cell lung cancer. All patients received 4 courses of induction therapy with pemetrexed (500 mg/m(2)) combined with carboplatin once every 3 weeks. If patients had stable disease or achieved a complete or partial tumor response after 4 courses of pemetrexed + carboplatin therapy, maintenance treatment with pemetrexed monotherapy was administered until either disease progression or intolerable toxicity occurred...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156786/suicidal-ideation-among-chinese-methadone-maintained-patients-prevalence-and-correlates
#4
Yan-Min Xu, Bao-Liang Zhong, Wen-Cai Chen, Jun-Hong Zhu, Jin Lu
Heroin users are at high risk for suicide. However, the epidemiological profile of suicidal behaviors in Chinese methadone-maintained patients remains largely unknown. This study determined the prevalence and correlates of suicidal ideation among Chinese methadone-maintained patients. A total of 603 methadone-maintained patients were consecutively recruited from three methadone maintenance treatment (MMT) clinics in Wuhan, China, and administered with standardized questionnaires to collect sociodemographic, clinical, and psychological data...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156764/the-neil1-g83d-germline-dna-glycosylase-variant-induces-genomic-instability-and-cellular-transformation
#5
Heather A Galick, Carolyn G Marsden, Scott Kathe, Julie A Dragon, Lindsay Volk, Antonia A Nemec, Susan S Wallace, Aishwarya Prakash, Sylvie Doublié, Joann B Sweasy
Base excision repair (BER) is a key genome maintenance pathway. The NEIL1 DNA glycosylase recognizes oxidized bases, and likely removes damage in advance of the replication fork. The rs5745906 SNP of the NEIL1 gene is a rare human germline variant that encodes the NEIL1 G83D protein, which is devoid of DNA glycosylase activity. Here we show that expression of G83D NEIL1 in MCF10A immortalized but non-transformed mammary epithelial cells leads to replication fork stress. Upon treatment with hydrogen peroxide, we observe increased levels of stalled replication forks in cells expressing G83D NEIL1 versus cells expressing the wild-type (WT) protein...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156667/maintenance-of-elderly-aml-patients-with-androgens
#6
EDITORIAL
Arnaud Pigneux, Marie C Béné
No abstract text is available yet for this article.
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156608/fatty-acids-antioxidants-and-physical-activity-in-brain-aging
#7
REVIEW
Hércules Rezende Freitas, Gustavo da Costa Ferreira, Isis Hara Trevenzoli, Karen de Jesus Oliveira, Ricardo Augusto de Melo Reis
Polyunsaturated fatty acids and antioxidants are important mediators in the central nervous system. Lipid derivatives may control the production of proinflammatory agents and regulate NF-κB activity, microglial activation, and fatty acid oxidation; on the other hand, antioxidants, such as glutathione and ascorbate, have been shown to signal through transmitter receptors and protect against acute and chronic oxidative stress, modulating the activity of different signaling pathways. Several authors have investigated the role of these nutrients in the brains of the young and the aged in degenerative diseases such as Alzheimer's and Parkinson's, and during brain aging due to adiposity- and physical inactivity-mediated metabolic disturbances, chronic inflammation, and oxidative stress...
November 20, 2017: Nutrients
https://www.readbyqxmd.com/read/29156584/identification-of-physiological-substrates-and-binding-partners-of-the-plant-mitochondrial-protease-ftsh4-by-the-trapping-approach
#8
Magdalena Opalińska, Katarzyna Parys, Hanna Jańska
Maintenance of functional mitochondria is vital for optimal cell performance and survival. This is accomplished by distinct mechanisms, of which preservation of mitochondrial protein homeostasis fulfills a pivotal role. In plants, inner membrane-embedded i-AAA protease, FTSH4, contributes to the mitochondrial proteome surveillance. Owing to the limited knowledge of FTSH4's in vivo substrates, very little is known about the pathways and mechanisms directly controlled by this protease. Here, we applied substrate trapping coupled with mass spectrometry-based peptide identification in order to extend the list of FTSH4's physiological substrates and interaction partners...
November 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29156578/pancreatic-cancer-molecular-characterization-clonal-evolution-and-cancer-stem-cells
#9
REVIEW
Elvira Pelosi, Germana Castelli, Ugo Testa
Pancreatic Ductal Adenocarcinoma (PDAC) is the fourth most common cause of cancer-related death and is the most lethal of common malignancies with a five-year survival rate of <10%. PDAC arises from different types of non-invasive precursor lesions: intraductal papillary mucinous neoplasms, mucinous cystic neoplasms and pancreatic intraepithelial neoplasia. The genetic landscape of PDAC is characterized by the presence of four frequently-mutated genes: KRAS, CDKN2A, TP53 and SMAD4. The development of mouse models of PDAC has greatly contributed to the understanding of the molecular and cellular mechanisms through which driver genes contribute to pancreatic cancer development...
November 18, 2017: Biomedicines
https://www.readbyqxmd.com/read/29156564/wireless-monitoring-of-induction-machine-rotor-physical-variables
#10
Jefferson Doolan Fernandes, Francisco Elvis Carvalho Souza, Glauco George Cipriano Maniçoba, Andrés Ortiz Salazar, José Alvaro de Paiva
With the widespread use of electric machines, there is a growing need to extract information from the machines to improve their control systems and maintenance management. The present work shows the development of an embedded system to perform the monitoring of the rotor physical variables of a squirrel cage induction motor. The system is comprised of: a circuit to acquire desirable rotor variable(s) and value(s) that send it to the computer; a rectifier and power storage circuit that converts an alternating current in a continuous current but also stores energy for a certain amount of time to wait for the motor's shutdown; and a magnetic generator that harvests energy from the rotating field to power the circuits mentioned above...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29156216/covert-retrieval-in-working-memory-impacts-the-phenomenological-characteristics-remembered-during-episodic-memory
#11
Vanessa M Loaiza, Borislava M Borovanska
Much research has investigated the qualitative experience of retrieving events from episodic memory (EM). The present study investigated whether covert retrieval in WM increases the phenomenological characteristics that participants find memorable in EM using tasks that distract attention from the maintenance of memoranda (i.e., complex span; Experiment 1) relative to tasks that do not (i.e., short or long list lengths of simple span; Experiments 1 and 2). Participants rated the quality of the phonological, semantic, and temporal-contextual characteristics remembered during a delayed memory characteristics questionnaire (MCQ)...
November 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/29156185/maintenance-of-lost-weight-and-long-term-management-of-obesity
#12
REVIEW
Kevin D Hall, Scott Kahan
Weight loss can be achieved through a variety of modalities, but long-term maintenance of lost weight is much more challenging. Obesity interventions typically result in early weight loss followed by a weight plateau and progressive regain. This review describes current understanding of the biological, behavioral, and environmental factors driving this near-ubiquitous body weight trajectory and the implications for long-term weight management. Treatment of obesity requires ongoing clinical attention and weight maintenance-specific counseling to support sustainable healthful behaviors and positive weight regulation...
January 2018: Medical Clinics of North America
https://www.readbyqxmd.com/read/29156179/dietary-management-of-obesity-cornerstones-of-healthy-eating-patterns
#13
REVIEW
Alissa D Smethers, Barbara J Rolls
Several dietary patterns, both macronutrient and food based, can lead to weight loss. A key strategy for weight management that can be applied across dietary patterns is to reduce energy density. Clinical trials show that reducing energy density is effective for weight loss and weight loss maintenance. A variety of practical strategies and tools can help facilitate successful weight management by reducing energy density, providing portion control, and improving diet quality. The flexibility of energy density gives patients options to tailor and personalize their dietary pattern to reduce energy intake for sustainable weight loss...
January 2018: Medical Clinics of North America
https://www.readbyqxmd.com/read/29155973/tapering-versus-steady-state-methotrexate-in-combination-with-tocilizumab-for-rheumatoid-arthritis-a-randomized-double-blind-trial
#14
Christopher J Edwards, Andrew J K Östör, Barbara Naisbett-Groet, Patrick Kiely
Objective: To explore whether tocilizumab + tapering MTX has comparable efficacy and safety vs tocilizumab + stable MTX in adult RA patients with inadequate response to MTX. Methods: This randomized, placebo-controlled non-inferiority study involved patients with severe active RA [28-joint DAS (DAS28) >5.1] who had initiated tocilizumab + MTX at the study start. Patients received open-label tocilizumab (8 mg/kg i.v. every 4 weeks) and open-label MTX. At week 24, patients achieving good/moderate EULAR response were randomized to group A (double-blind MTX taper) or group B (double-blind MTX maintenance); both arms continued open-label tocilizumab...
October 9, 2017: Rheumatology
https://www.readbyqxmd.com/read/29155878/irhom2-is-essential-for-innate-immunity-to-rna-virus-by-antagonizing-er-and-mitochondria-associated-degradation-of-visa
#15
Wei-Wei Luo, Shu Li, Chen Li, Zhou-Qin Zheng, Pan Cao, Zhen Tong, Huan Lian, Su-Yun Wang, Hong-Bing Shu, Yan-Yi Wang
VISA (also known as MAVS, IPS-1 and Cardif) is an essential adaptor protein in innate immune response to RNA virus. The protein level of VISA is delicately regulated before and after viral infection to ensure the optimal activation and timely termination of innate antiviral response. It has been reported that several E3 ubiquitin ligases can mediate the degradation of VISA, but how the stability of VISA is maintained before and after viral infection remains enigmatic. In this study, we found that the ER-associated inactive rhomboid protein 2 (iRhom2) plays an essential role in mounting an efficient innate immune response to RNA virus by maintaining the stability of VISA through distinct mechanisms...
November 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29155827/the-asian-house-shrew-suncus-murinus-as-a-reservoir-and-source-of-human-outbreaks-of-plague-in-madagascar
#16
Soanandrasana Rahelinirina, Minoarisoa Rajerison, Sandra Telfer, Cyril Savin, Elisabeth Carniel, Jean-Marc Duplantier
Identifying key reservoirs for zoonoses is crucial for understanding variation in incidence. Plague re-emerged in Mahajanga, Madagascar in the 1990s but there has been no confirmed case since 1999. Here we combine ecological and genetic data, from during and after the epidemics, with experimental infections to examine the role of the shrew Suncus murinus in the plague epidemiological cycle. The predominance of S. murinus captures during the epidemics, their carriage of the flea vector and their infection with Yersinia pestis suggest they played an important role in the maintenance and transmission of plague...
November 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29155813/post-guidance-signaling-by-extracellular-matrix-associated-slit-slit-n-maintains-fasciculation-and-position-of-axon-tracts-in-the-nerve-cord
#17
Krishna Moorthi Bhat
Axon-guidance by Slit-Roundabout (Robo) signaling at the midline initially guides growth cones to synaptic targets and positions longitudinal axon tracts in discrete bundles on either side of the midline. Following the formation of commissural tracts, Slit is found also in tracts of the commissures and longitudinal connectives, the purpose of which is not clear. The Slit protein is processed into a larger N-terminal peptide and a smaller C-terminal peptide. Here, I show that Slit and Slit-N in tracts interact with Robo to maintain the fasciculation, the inter-tract spacing between tracts and their position relative to the midline...
November 20, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29155741/directed-differentiation-of-primitive-and-definitive-hematopoietic-progenitors-from-human-pluripotent-stem-cells
#18
Carissa Dege, Christopher M Sturgeon
One of the major goals for regenerative medicine is the generation and maintenance of hematopoietic stem cells (HSCs) derived from human pluripotent stem cells (hPSCs). Until recently, efforts to differentiate hPSCs into HSCs have predominantly generated hematopoietic progenitors that lack HSC potential, and instead resemble yolk sac hematopoiesis. These resulting hematopoietic progenitors may have limited utility for in vitro disease modeling of various adult hematopoietic disorders, particularly those of the lymphoid lineages...
November 1, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155653/enhancing-laboratory-response-network-capacity-in-south-korea
#19
J Todd Parker, Ann-Christian Juren, Luis Lowe, Scott Santibañez, Gi-Eun Rhie, Toby L Merlin
Laboratory Response Network (LRN) laboratories help protect populations from biological and chemical public health threats. We examined the role of LRN biological laboratories in enhancing capacity to detect and respond to public health infectious disease emergencies in South Korea. The model for responding to infectious disease emergencies leverages standardized laboratory testing procedures, a repository of standardized testing reagents, laboratory testing cooperation among hospital sentinel laboratories and reference laboratories, and maintenance of a trained workforce through traditional and on-demand training...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29155440/severe-hypoglycemia-caused-by-lenalidomide
#20
Daniel J Przybylski, Ruemu Birhiray, David J Reeves
Lenalidomide is commonly used for multiple myeloma as either induction or maintenance therapy. The agent is associated with a host of adverse effects, but hypoglycemia has only been reported in one phase I trial in patients with solid tumors. We describe a 74-year-old woman who experienced grade 3 hypoglycemia (blood glucose level 35 mg/dL) likely related to lenalidomide. Her medical history was significant for refractory myeloma and type 2 diabetes mellitus. Lenalidomide was started as maintenance therapy following autologous bone marrow transplantation...
November 20, 2017: Pharmacotherapy
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