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https://www.readbyqxmd.com/read/28919043/neocortical-dynamics-during-whisker-based-sensory-discrimination-in-head-restrained-mice
#1
Fritjof Helmchen, Ariel Gilad, Jerry L Chen
A fundamental task frequently encountered by brains is to rapidly and reliably discriminate between sensory stimuli of the same modality, be it distinct auditory sounds, odors, visual patterns, or tactile textures. A key mammalian brain structure involved in discrimination behavior is the neocortex. Sensory processing not only involves the respective primary sensory area, which is crucial for perceptual detection, but additionally relies on cortico-cortical communication among several regions including higher-order sensory areas as well as frontal cortical areas...
September 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28918902/mtor-controls-mitochondrial-dynamics-and-cell-survival-via-mtfp1
#2
Masahiro Morita, Julien Prudent, Kaustuv Basu, Vanessa Goyon, Sakie Katsumura, Laura Hulea, Dana Pearl, Nadeem Siddiqui, Stefan Strack, Shawn McGuirk, Julie St-Pierre, Ola Larsson, Ivan Topisirovic, Hojatollah Vali, Heidi M McBride, John J Bergeron, Nahum Sonenberg
The mechanisms that link environmental and intracellular stimuli to mitochondrial functions, including fission/fusion, ATP production, metabolite biogenesis, and apoptosis, are not well understood. Here, we demonstrate that the nutrient-sensing mechanistic/mammalian target of rapamycin complex 1 (mTORC1) stimulates translation of mitochondrial fission process 1 (MTFP1) to control mitochondrial fission and apoptosis. Expression of MTFP1 is coupled to pro-fission phosphorylation and mitochondrial recruitment of the fission GTPase dynamin-related protein 1 (DRP1)...
September 13, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28917630/decision-making-about-healthcare-related-tests-and-diagnostic-strategies-international-guidelines-show-variability-in-their-approaches
#3
Reem A Mustafa, Wojtek Wiercioch, Ingrid Arevalo-Rodriguez, Adrienne Cheung, Barbara Prediger, Liudmila Ivanova, Matthew Ventresca, Jan Brozek, Nancy Santesso, Patrick Bossuyt, Amit X Garg, Nancy Lloyd, Monika Lelgemann, Diedrich Bühler, Holger Schünemann
OBJECTIVE: To describe and compare current practices in developing guidelines about the use of health care related tests and diagnostic strategies (HCTDS) STUDY DESIGN AND SETTING: We sampled 37 public health and clinical practice guidelines about HCTDS from various sources without language restrictions. RESULTS: Detailed descriptions of the systems used to assess the quality of evidence and develop recommendations were challenging to find within guidelines. We observed much variability among and within organizations with respect to how they develop recommendations about HCTDS...
September 13, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28917629/decision-making-about-healthcare-related-tests-and-diagnostic-strategies-a-qualitative-study-with-experts-suggests-that-test-accuracy-data-alone-is-rarely-sufficient-for-decision-making
#4
Reem A Mustafa, Wojtek Wiercioch, Matthew Ventresca, Jan Brozek, Holger J Schünemann
OBJECTIVE: To identify the critical factors that determine recommendations and other decisions about health care related tests and diagnostic strategies (HCTDS). METHODS: We used a qualitative descriptive approach and conducted semi-structured in-depth interviews with 24 international experts (informants) in evidence and decisions about HCTDS. RESULTS: Although test accuracy (TA) was the factor most commonly considered by organizations when developing recommendations about HCTDS, informants agreed that TA is necessary but rarely, if ever, sufficient and may be misleading when solely considered...
September 13, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28913851/pathways-to-housing-policy-translating-research-to-policy-to-achieve-impact-on-well-being
#5
Bryan Samuels
Policy emerges from the legislative, agency, and practice levels and from several pathways, including litigation; high profile or tragic events; community-based service provision and practice innovations; and research evidence. This commentary places an emphasis throughout on discussions of the articles included in this issue. It explores pathways that influenced the development of housing policy targeting child and family well being and provides examples to illustrate each pathway. The article further highlights how research on housing and child well being has influenced policy and practice and notes gaps for further research...
September 15, 2017: American Journal of Community Psychology
https://www.readbyqxmd.com/read/28912289/using-best-interests-meetings-for-people-in-a-prolonged-disorder-of-consciousness-to-improve-clinical-and-ethical-management
#6
Derick T Wade
Current management of people with prolonged disorders of consciousness is failing patients, families and society. The causes include a general lack of concern, knowledge and expertise; a legal and professional framework which impedes timely and appropriate decision-making and/or enactment of the decision; and the exclusive focus on the patient, with no legitimate means to consider the broader consequences of healthcare decisions. This article argues that a clinical pathway based on the principles of (a) the English Mental Capacity Act 2005 and (b) using time-limited treatment trials could greatly improve patient management and reduce stress on families...
September 14, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28904327/the-clinical-management-of-hepatocellular-carcinoma-worldwide-a-concise-review-and-comparison-of-current-guidelines-from-2001-to-2017
#7
Peipei Song, Yulong Cai, Haowen Tang, Chuan Li, Jiwei Huang
Hepatocellular carcinoma (HCC) is the fifth most common malignancy and the second leading cause of cancer-related mortality worldwide. In this review, we made a review on current guidelines published from January 2001 to June 2017 worldwide with a focus on the clinical management of HCC. The electronic databases MEDLINE, the Chinese SinoMed, and the Japanese CiNii were systematically searched. A total of 18 characteristic guidelines for HCC management were finally included, including 8 guidelines from Asia, 5 from Europe, and 5 from the United States of America (USA)...
2017: Bioscience Trends
https://www.readbyqxmd.com/read/28904067/whole-genome-sequencing-reveals-breast-cancers-with-mismatch-repair-deficiency
#8
Helen Davies, Sandro Morganella, Colin A Purdie, Se Jin Jang, Elin Borgen, Hege Russnes, Dominik Glodzik, Xueqing Zou, Alain Viari, Andrea L Richardson, Anne-Lise Børresen-Dale, Alastair Thompson, Jorunn E Eyfjord, Gu Kong, Michael R Stratton, Serena Nik-Zainal
Mismatch repair (MMR)-deficient cancers have been discovered to be highly responsive to immune therapies such as PD-1 checkpoint blockade, making their definition in patients, where they may be relatively rare, paramount for treatment decisions. In this study, we utilized patterns of mutagenesis known as mutational signatures, which are imprints of the mutagenic processes associated with MMR deficiency, to identify MMR-deficient breast tumors from a whole-genome sequencing dataset comprising a cohort of 640 patients...
September 13, 2017: Cancer Research
https://www.readbyqxmd.com/read/28903716/predicting-the-pursuit-and-support-of-challenging-life-opportunities
#9
Brooke C Feeney, Meredith Van Vleet, Brittany K Jakubiak, Jennifer M Tomlinson
Deciding to embrace challenging opportunities may present one life context through which individuals may thrive, and these decisions may be influenced by one's significant relationships. Married couples were unobtrusively videotaped as one couple-member was presented with a challenging opportunity and decided whether to accept it. We assessed interpersonal predictors of the decision to accept or forgo the opportunity, predictors of the spouse's support during decision-making, and follow-up thriving outcomes 6 months later...
August 2017: Personality & Social Psychology Bulletin
https://www.readbyqxmd.com/read/28902724/validation-of-the-integrated-model-of-health-literacy-in-patients-with-breast-cancer
#10
Wen-Hsuan Hou, Yi-Jing Huang, Yen Lee, Cheng-Te Chen, Gong-Hong Lin, Ching-Lin Hsieh
BACKGROUND: Health literacy (HL) enables patients with breast cancer to actively participate in health decisions and promote positive health outcomes. The Integrated Model of Health Literacy (IMHL), defined as the personal, situational, and societal/environmental factors that predict the level of HL that can influence health outcomes, incorporates the concepts, determinants, and consequences of HL. OBJECTIVE: The aim of this study was to examine the mechanisms and completeness of the IMHL in patients with breast cancer...
September 11, 2017: Cancer Nursing
https://www.readbyqxmd.com/read/28901005/delivery-arrangements-for-health-systems-in-low-income-countries-an-overview-of-systematic-reviews
#11
REVIEW
Agustín Ciapponi, Simon Lewin, Cristian A Herrera, Newton Opiyo, Tomas Pantoja, Elizabeth Paulsen, Gabriel Rada, Charles S Wiysonge, Gabriel Bastías, Lilian Dudley, Signe Flottorp, Marie-Pierre Gagnon, Sebastian Garcia Marti, Claire Glenton, Charles I Okwundu, Blanca Peñaloza, Fatima Suleman, Andrew D Oxman
BACKGROUND: Delivery arrangements include changes in who receives care and when, who provides care, the working conditions of those who provide care, coordination of care amongst different providers, where care is provided, the use of information and communication technology to deliver care, and quality and safety systems. How services are delivered can have impacts on the effectiveness, efficiency and equity of health systems. This broad overview of the findings of systematic reviews can help policymakers and other stakeholders identify strategies for addressing problems and improve the delivery of services...
September 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28900490/wnt3a-expression-is-associated-with-epithelial-mesenchymal-transition-and-impacts-prognosis-of-lung-adenocarcinoma-patients
#12
Jinming Xu, Wang Lv, Yeji Hu, Luming Wang, Yiqing Wang, Jinlin Cao, Jian Hu
Background: Epithelial-mesenchymal transition (EMT) plays an important role in the invasion and migration during cancer metastasis. Wnt3a is one of the ligands in canonical Wnt/β-catenin signaling pathway, which contributes to the carcinogenesis and progression of lung cancer cell lines. The aim of this study was to evaluate the association between Wnt3a and EMT-related proteins (E-cadherin and N-cadherin), and to further investigate its impact on prognosis of lung adenocarcinoma patients. Methods: A total of 147 lung adenocarcinoma patients were included and their clinicopathological characteristics were collected in this retrospective study...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28900390/genetically-driven-enhancement-of-dopaminergic-transmission-affects-moral-acceptability-in-females-but-not-in-males-a-pilot-study
#13
Silvia Pellegrini, Sara Palumbo, Caterina Iofrida, Erika Melissari, Giuseppina Rota, Veronica Mariotti, Teresa Anastasio, Andrea Manfrinati, Rino Rumiati, Lorella Lotto, Michela Sarlo, Pietro Pietrini
Moral behavior has been a key topic of debate for philosophy and psychology for a long time. In recent years, thanks to the development of novel methodologies in cognitive sciences, the question of how we make moral choices has expanded to the study of neurobiological correlates that subtend the mental processes involved in moral behavior. For instance, in vivo brain imaging studies have shown that distinct patterns of brain neural activity, associated with emotional response and cognitive processes, are involved in moral judgment...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28895920/emt-and-treatment-resistance-in-pancreatic-cancer
#14
REVIEW
Nicola Gaianigo, Davide Melisi, Carmine Carbone
Pancreatic cancer (PC) is the third leading cause of adult cancer mortality in the United States. The poor prognosis for patients with PC is mainly due to its aggressive course, the limited efficacy of active systemic treatments, and a metastatic behavior, demonstrated throughout the evolution of the disease. On average, 80% of patients with PC are diagnosed with metastatic disease, and the half of those who undergo surgery and adjuvant therapy develop liver metastasis within two years. Metastatic dissemination is an early event in PC and is mainly attributed to an evolutionary biological process called epithelial-to-mesenchymal transition (EMT)...
September 12, 2017: Cancers
https://www.readbyqxmd.com/read/28895424/comment-translating-guidelines-into-practice-interpreting-the-2016-acc-expert-consensus-decision-pathway-on-the-role-of-non-statin-therapies-for-ldl-cholesterol-lowering-in-the-management-of-atherosclerotic-cardiovascular-disease-risk
#15
https://www.readbyqxmd.com/read/28893063/multi-step-heterogeneous-nucleation-in-binary-mixtures-of-charged-colloidal-spheres
#16
Jianing Liu, Tong Shen, Zhao Hua Yang, Shu Zhang, Guang Yu Sun
Nucleation plays a decisive role in determining the crystal structure and size distribution. But still understanding of the fundamentals of nucleation is quite limited. Particularly, it is unclear whether a nucleus forms spontaneously from solution via a single- or multiple-step process. Here, we show how a binary mixture of charged colloidal spheres nucleates heterogeneously on a flat substrate by means of Bragg microscopy, laser diffraction and laser microscopy. In contrast to the conventional one-step and two-step nucleation mechanisms, a novel pathway of multi-step heterogeneous nucleation under certain experimental conditions is highlighted by four steps: initial homogeneous fluid → prenucleation clusters → pre-ordered prenucleation clusters → intermediate ordered phase → final crystal...
September 11, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28891816/syntaphilin-controls-a-mitochondrial-rheostat-for-proliferation-motility-decisions-in-cancer
#17
M Cecilia Caino, Jae Ho Seo, Yuan Wang, Dayana B Rivadeneira, Dmitry I Gabrilovich, Eui Tae Kim, Ashani T Weeraratna, Lucia R Languino, Dario C Altieri
Tumors adapt to an unfavorable microenvironment by controlling the balance between cell proliferation and cell motility, but the regulators of this process are largely unknown. Here, we show that an alternatively spliced isoform of syntaphilin (SNPH), a cytoskeletal regulator of mitochondrial movements in neurons, is directed to mitochondria of tumor cells. Mitochondrial SNPH buffers oxidative stress and maintains complex II-dependent bioenergetics, sustaining local tumor growth while restricting mitochondrial redistribution to the cortical cytoskeleton and tumor cell motility...
September 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28891407/substance-use-and-self-harm-case-studies-from-patients-admitted-to-an-urban-hospital-following-medically-serious-self-harm
#18
Elsie Breet, Jason Bantjes
Few qualitative studies have explored the relationship between substance use and self-harm. We employed a multiple-case study research design to analyze data from 80 patients who were admitted to a hospital in South Africa following self-harm. Our analysis revealed, from the perspective of patients, a number of distinct ways in which substance use is implicated in self-harm. Some patients reported that substance intoxication resulted in poor decision making and impulsivity, which led to self-harm. Others said substance use facilitated their self-harm...
September 1, 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28891379/linking-coach-interpersonal-style-with-athlete-doping-intentions-and-doping-use-a-prospective-study
#19
Nikos Ntoumanis, Vassilis Barkoukis, Daniel F Gucciardi, Derwin King Chung Chan
We brought together various lines of work on motivation, morality, and doping by testing a theory-based model prospectively linking contextual and personal motivational variables, moral attitudes, moral disengagement in doping, doping intentions, and doping use. Participants were 257 Greek athletes who completed a questionnaire pack at the beginning of a sport season. In the case of doping use, we also obtained data close to the end of the same season. The model showed that perceptions of controlling coach behaviors predicted athlete need frustration, which in turn predicted low moral functioning and doping intentions/doping use...
September 11, 2017: Journal of Sport & Exercise Psychology
https://www.readbyqxmd.com/read/28891339/immunotherapy-in-managing-metastatic-melanoma-which-treatment-when
#20
Teresa Amaral, Francisco Meraz-Torres, Claus Garbe
Ten to fifteen percent of melanoma patients develop distant or unresectable metastasis requiring systemic treatment. Around 45% of the patients diagnosed with metastatic cutaneous melanoma harbor a BRAFV600 mutation and derive benefit from combined targeted therapy with MAPK pathway inhibitors. These offer a rapid response that translates into improvement of symptoms and increased quality of life. However, resistance often develops with subsequent progressive disease. Immunotherapy with checkpoint inhibitors may be offered to BRAF-mutated and wild-type patients and is associated with longer and durable responses that can continue over years...
September 9, 2017: Expert Opinion on Biological Therapy
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