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https://www.readbyqxmd.com/read/29156786/suicidal-ideation-among-chinese-methadone-maintained-patients-prevalence-and-correlates
#1
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/29156608/fatty-acids-antioxidants-and-physical-activity-in-brain-aging
#2
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/29156580/cellular-localization-of-wheat-high-molecular-weight-glutenin-subunits-in-transgenic-rice-grain
#3
Yeong-Min Jo, Kyoungwon Cho, Hye-Jung Lee, Sun-Hyung Lim, Jin Sun Kim, Young-Mi Kim, Jong-Yeol Lee
Rice (Oryza sativa L.) is a primary global food cereal. However, when compared to wheat, rice has poor food processing qualities. Dough that is made from rice flour has low viscoelasticity because rice seed lacks storage proteins that are comparable to gluten protein from wheat. Thus, current research efforts aim to improve rice flour processing qualities through the transgenic expression of viscoelastic proteins in rice seeds. In this study, we characterized the transgenic expression of wheat glutenin subunits in rice seeds...
November 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29156509/the-role-of-exosomes-on-colorectal-cancer-a-review
#4
REVIEW
Lidia Ruiz-López, Isabel Blancas, José M Garrido, Nuria Mut-Salud, Marta Moya-Jódar, Antonio Osuna, Fernando Rodríguez-Serrano
Exosomes are extracellular microvesicles released from cells, which are involved in many biological and pathological processes, mainly due to their role in intercellular communication. Exosomes derived from colorectal cancer (CRC) cells are related to oncogenesis, tumor cell survival, chemo-resistance and metastasis. The role of the exosomes in these processes involves the transfer of proteins, RNAs or mutant versions of proto-oncogenes to the target cells. In recent years, great efforts have been made to identify useful biomarkers in CRC exosomes for diagnosis, prediction of prognosis and treatment response...
November 20, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29156414/schizophrenia-heterogeneity-revisited-clinical-cognitive-and-psychosocial-correlates-of-statistically-derived-negative-symptoms-subgroups
#5
Anthony O Ahmed, Gregory P Strauss, Robert W Buchanan, Brian Kirkpatrick, William T Carpenter
Traditional efforts to delineate the clinical heterogeneity of schizophrenia have been unsuccessful because of the absence of a valid, stable, and meaningful subtyping scheme. A clinically-informed nosology supported by multivariate statistical classification methods may provide a better approach for classifying schizophrenia. The goals of the current study were to 1) use multivariate classification methods to validate a clinical subtyping scheme based on the profile of negative symptoms; and 2) following validation to contrast the statistically-derived subgroups to ascertain distinguishing demographic, clinical, cognitive, and functional characteristics...
November 12, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29156400/-i-have-it-just-in-case-naloxone-access-and-changes-in-opioid-use-behaviours
#6
Sarah Cercone Heavey, Yu-Ping Chang, Bonnie M Vest, R Lorraine Collins, William Wieczorek, Gregory G Homish
BACKGROUND: The past decade has seen over a four-fold increase in deaths from opioid overdose in the United States. To address this growing epidemic, many localities initiated policies to expand access to naloxone (a drug that reverses the effects of opioids); however, little is known how naloxone access affects opioid use behaviours. METHODS: The present qualitative study used semi-structured, in-depth interviews with inpatients at a substance use treatment centre...
November 17, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29156381/structure-based-methods-to-predict-mutational-resistance-to-diarylpyrimidine-non-nucleoside-reverse-transcriptase-inhibitors
#7
Syeda Maryam Azeem, Alecia N Muwonge, Nehaben Thakkar, Kristina W Lam, Kathleen M Frey
Resistance to non-nucleoside reverse transcriptase inhibitors (NNRTIs) is a leading cause of HIV treatment failure. Often included in antiviral therapy, NNRTIs are chemically diverse compounds that bind an allosteric pocket of enzyme target reverse transcriptase (RT). Several new NNRTIs incorporate flexibility in order to compensate for lost interactions with amino acid conferring mutations in RT. Unfortunately, even successful inhibitors such as diarylpyrimidine (DAPY) inhibitor rilpivirine are affected by mutations in RT that confer resistance...
November 9, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29156320/localised-sampling-of-myoelectric-activity-may-provide-biased-estimates-of-cocontraction-for-gastrocnemius-though-not-for-soleus-and-tibialis-anterior-muscles
#8
Maria Vinti, Jean-Michel Gracies, Marco Gazzoni, Taian Vieira
Proper muscle activity quantification is highly relevant to monitor and treat spastic cocontraction. As activity may distribute unevenly within muscle volumes, particularly for pennate calf muscles, surface electromyograms (EMGs) detected by traditional bipolar montage may provide biased estimations of muscle activity. We compared cocontraction estimates obtained using bipolar vs grids of electrodes (high-density EMG, HD-EMG). EMGs were collected from medial gastrocnemius, soleus and tibialis anterior during isometric plantar and dorsi-flexion efforts at three levels (30%, 70% and 100% MVC), knee flexed and extended...
November 14, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29156286/phytotoxicity-of-pyrethroid-pesticides-and-its-metabolite-towards-cucumis-sativus
#9
I Bragança, Paulo C Lemos, Piedade Barros, Cristina Delerue-Matos, Valentina F Domingues
Pyrethroid pesticides residues have been frequently detected in soils and have been recognized to contribute to soil toxicity. The phytotoxic impact of pesticides was evaluated in Cucumis sativus (C. sativus) seeds. Percentage of seed germination, root elongation, shoot length and leaf length were considered as endpoints to assess the possible acute phytotoxicity of soil by the exposure to pyrethroid pesticides (cypermethrin, deltamethrin and cyhalothrin) and its metabolite phenoxybenzoic acid (3-PBA), in a concentration range between 50 and 500μgkg(-1)...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156258/developing-an-online-tool-for-identifying-at-risk-populations-to-wildfire-smoke-hazards
#10
Ambarish Vaidyanathan, Fuyuen Yip, Paul Garbe
Wildfire episodes pose a significant public health threat in the United States. Adverse health impacts associated with wildfires occur near the burn area as well as in places far downwind due to wildfire smoke exposures. Health effects associated with exposure to particulate matter arising from wildfires can range from mild eye and respiratory tract irritation to more serious outcomes such as asthma exacerbation, bronchitis, and decreased lung function. Real-time operational forecasts of wildfire smoke concentrations are available but they are not readily integrated with information on vulnerable populations necessary to identify at-risk communities during wildfire smoke episodes...
November 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156207/intracellular-protein-degradation-from-a-vague-idea-thru-the-lysosome-and-the-ubiquitin-proteasome-system-and-onto-human-diseases-and-drug-targeting
#11
REVIEW
Aaron Ciechanover
Between the 1950s and 1980s, scientists were focusing mostly on how the genetic code is transcribed to RNA and translated to proteins, but how proteins are degraded has remained a neglected research area. With the discovery of the lysosome by Christian de Duve it was assumed that cellular proteins are degraded within this organelle. Yet, several independent lines of experimental evidence strongly suggested that intracellular proteolysis is largely non-lysosomal, but the mechanisms involved remained obscure...
December 2017: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/29156204/autologous-hematopoietic-cell-transplantation-for-adult-acute-myeloid-leukemia-an-obsolete-or-resurfacing-concept
#12
REVIEW
Hillard M Lazarus, Najla El Jurdi
Improving long-term outcomes of adult acute myeloid leukemia (AML) patients remains a challenge. Major scientific and clinical advances have led to a better understanding of the disease biology, and the majority of patients achieve a complete remission (CR) after induction therapy. Relapse risk, however, remains considerable and is the leading cause of death in this patient population. Significant efforts to improve outcomes emphasize use of post-remission therapies such as hematopoietic cell transplantation (HCT), an increasingly utilized modality...
December 2017: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/29156196/familial-myelodysplastic-syndrome-acute-myeloid-leukemia
#13
REVIEW
Jane E Churpek
A growing number of inherited genetic loci that contribute to myelodysplastic syndrome/acute myeloid leukemia (MDS/AML) development in both children as well as adults are rapidly being identified. In recognition of the clinical impact of this emerging field, the World Health Organization, National Comprehensive Cancer Network, and European LeukemiaNet have all added consideration of inherited predisposition to MDS/AML classification and management. Study of these disorders is providing unique insight into the biology of both sporadic and familial MDS/AML...
December 2017: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/29156166/allograft-bone-what-is-the-role-of-platelet-derived-growth-factor-in-hindfoot-and-ankle-fusions
#14
REVIEW
Ryan T Scott, Jeffrey E McAlister, Ryan B Rigby
Arthrodesis of the ankle or foot is a common procedure for chronic pain and disability. Nonunion remains a prevalent complication among arthrodesis procedures. Some patients present with an inherent risk of developing a nonunion. Allograft biologics have gained popularity in an effort to reduce complications such as nonunion. Various biologics bring unique properties while maintaining a singular purpose. Platelet-derived growth factor (PDGF) may be introduced into a fusion site to facilitate healthy bony consolidation...
January 2018: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/29156140/automated-training-of-reaxff-reactive-force-fields-for-energetics-of-enzymatic-reactions
#15
Tomáš Trnka, Igor Tvaroska, Jaroslav Koca
Computational studies of the reaction mechanisms of various enzymes are nowadays based almost exclusively on hybrid QM/MM models. Unfortunately, the success of this approach strongly depends on the selection of the QM region, and computational cost is a crucial limiting factor. An interesting alternative is offered by empirical reactive molecular force fields, especially the ReaxFF potential developed by van Duin and co-workers. However, even though an initial parameterization of ReaxFF for biomolecules already exists, it does not provide the desired level of accuracy...
November 20, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29156135/fluorescent-probes-of-dna-repair
#16
David L Wilson, Eric T Kool
DNA repair is now understood to play a key role in a variety of disease states, most notably cancer. Tools for studying DNA have typically relied on traditional biochemical methods which are often laborious and indirect. Efforts to study the biology and therapeutic relevance of DNA repair pathways can be limited by such methods. Recently, specific fluorescent probes have been developed to aid in the study of DNA repair. Fluorescent probes offer the advantage of being able to directly assay for DNA repair activity in a simple, mix-and-measure format...
November 20, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29155956/associations-between-parental-ses-and-children-s-health-related-quality-of-life-the-role-of-objective-and-subjective-social-status
#17
Kay W Kim, Jan L Wallander, Melissa Peskin, Paula Cuccaro, Marc N Elliott, Mark A Schuster
Objective: We examined (1) the relationship that parental objective social status (OSS) and subjective social status (SSS) have with children's health-related quality of life (HRQOL), (2) whether SSS mediates the association between OSS and HRQOL, and (3) whether these associations differ among Black, Latino, and White children. Method: Data came from 4,824 Black, Latino, and White 5th graders in the Healthy PassagesTM study. OSS was measured as parent educational attainment and net equivalent household income...
November 15, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29155950/ensembl-2018
#18
Daniel R Zerbino, Premanand Achuthan, Wasiu Akanni, M Ridwan Amode, Daniel Barrell, Jyothish Bhai, Konstantinos Billis, Carla Cummins, Astrid Gall, Carlos García Girón, Laurent Gil, Leo Gordon, Leanne Haggerty, Erin Haskell, Thibaut Hourlier, Osagie G Izuogu, Sophie H Janacek, Thomas Juettemann, Jimmy Kiang To, Matthew R Laird, Ilias Lavidas, Zhicheng Liu, Jane E Loveland, Thomas Maurel, William McLaren, Benjamin Moore, Jonathan Mudge, Daniel N Murphy, Victoria Newman, Michael Nuhn, Denye Ogeh, Chuang Kee Ong, Anne Parker, Mateus Patricio, Harpreet Singh Riat, Helen Schuilenburg, Dan Sheppard, Helen Sparrow, Kieron Taylor, Anja Thormann, Alessandro Vullo, Brandon Walts, Amonida Zadissa, Adam Frankish, Sarah E Hunt, Myrto Kostadima, Nicholas Langridge, Fergal J Martin, Matthieu Muffato, Emily Perry, Magali Ruffier, Dan M Staines, Stephen J Trevanion, Bronwen L Aken, Fiona Cunningham, Andrew Yates, Paul Flicek
The Ensembl project has been aggregating, processing, integrating and redistributing genomic datasets since the initial releases of the draft human genome, with the aim of accelerating genomics research through rapid open distribution of public data. Large amounts of raw data are thus transformed into knowledge, which is made available via a multitude of channels, in particular our browser (http://www.ensembl.org). Over time, we have expanded in multiple directions. First, our resources describe multiple fields of genomics, in particular gene annotation, comparative genomics, genetics and epigenomics...
November 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29155825/poverty-and-health-among-cdc-plantation-labourers-in-cameroon-perceptions-challenges-and-coping-strategies
#19
Valerie Makoge, Lenneke Vaandrager, Harro Maat, Maria Koelen
Creating better access to good quality healthcare for the poor is a major challenge to development. In this study, we examined inter-linkages between poverty and disease, referred to as poverty-related diseases (PRDs), by investigating how Cameroon Development Corporation (CDC) camp dwellers respond to diseases that adversely affect their health and wellbeing. Living in plantation camps is associated with poverty, overcrowding, poor sanitation and the rapid spread of diseases. In a survey of 237 CDC camp dwellers in Cameroon, we used the health belief model to understand the drivers (perceived threats, benefits and cues for treatment seeking) of reported responses...
November 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29155741/directed-differentiation-of-primitive-and-definitive-hematopoietic-progenitors-from-human-pluripotent-stem-cells
#20
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
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