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https://www.readbyqxmd.com/read/27922642/threshold-values-for-the-perception-of-color-changes-in-human-teeth
#1
Daniel S Thoma, Alexis Ioannidis, Vincent Fehmer, Gioia Michelotti, Ronald E Jung, Irena Sailer
The aim of the present study was to assess the threshold values for color changes on the level of the tooth separately for laypeople, dentists, and dental technicians. Standardized presentations were made of five cases (maxilla, left to right lateral incisors) with the gingiva and teeth separated. The color parameters L (lightness), a, and b (chroma) (CIE L*a*b* parameters) of the tooth layers were adjusted to induce darker and lighter colors. In the presentations, the left part of the pictures (maxillary right central and lateral incisors) was unchanged, whereas the right part was modified...
November 2016: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27920848/a-systematic-investigation-of-sclerosing-mesenteritis-through-ct-and-mri
#2
Sotirios Apostolakis, Argyrios Ioannidis, Garyfalia Tsioga, Konstantina Papageorgiou, Georgios Velimezis
Sclerosing mesenteritis is primarily diagnosed through histologic and radiologic evaluation; however, only a few works provide a systematic description using MRI. This work presents the case of a 68-year-old male, who was admitted for a routine cholecystectomy. Intraoperativly, a large mass was identified dislocating the abdominal viscera. The microscopic examination revealed vascular congestion of the omentum. The contrast-enhanced CT and MRI scans revealed the presence of a heterogenous, lipomatous mass with lesions visible only in T2W and contrast-enhanced T1W MRI...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27907862/alteration-of-%C3%AE-n-acetylgalactosaminidase-nagalase-concentration-in-alcohol-dependent-individuals-without-liver-disease-during-the-detoxification-therapy
#3
Margarita Zoga, Thomas Nikou, Anastasios Ioannidis, Elias Tzavellas, Thomas Paparrigopoulos, Konstantinos Th Lambrokostopoulos, Vassilis G Vasdekis, Maria Magana, Stylianos Chatzipanagiotou
BACKGROUND: The present study aimed to investigate for the first time, the alteration of α-N-acetylgalactosaminidase (nagalase) concentration in alcohol-dependent individuals without liver disease, before, during and at the end of the detoxification therapy. METHODS: Forty-eight alcohol-dependent individuals without liver disease who were admitted for alcohol detoxification, and eighty-four healthy controls participated in this study. Patients' blood was obtained upon admission, two weeks later and after the completion of the detoxification period (4-5 weeks)...
November 16, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27899580/orthodb-v9-1-cataloging-evolutionary-and-functional-annotations-for-animal-fungal-plant-archaeal-bacterial-and-viral-orthologs
#4
Evgeny M Zdobnov, Fredrik Tegenfeldt, Dmitry Kuznetsov, Robert M Waterhouse, Felipe A Simão, Panagiotis Ioannidis, Mathieu Seppey, Alexis Loetscher, Evgenia V Kriventseva
OrthoDB is a comprehensive catalog of orthologs, genes inherited by extant species from a single gene in their last common ancestor. In 2016 OrthoDB reached its 9th release, growing to over 22 million genes from over 5000 species, now adding plants, archaea and viruses. In this update we focused on usability of this fast-growing wealth of data: updating the user and programmatic interfaces to browse and query the data, and further enhancing the already extensive integration of available gene functional annotations...
November 28, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27896967/methods-to-ensure-the-reproducibility-of-biomedical-research
#5
Konrad J Karczewski, Nicholas P Tatonetti, Arjun K Manrai, Chirag J Patel, C Titus Brown, John P A Ioannidis
Science is not done in a vacuum - across fields of biomedicine, scientists have built on previous research and used data published in previous papers. A mainstay of scientific inquiry is the publication of one's research and recognition for this work is given in the form of citations and notoriety - ideally given in proportion to the quality of the work. Academic incentives, however, may encourage individual researchers to prioritize career ambitions over scientific truth. Recently, the New England Journal of Medicine published a commentary calling scientists who repurpose data "research parasites" who misuse data generated by others to demonstrate alternative hypotheses...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27884869/sex-based-subgroup-differences-in-randomized-controlled-trials-empirical-evidence-from-cochrane-meta-analyses
#6
Joshua D Wallach, Patrick G Sullivan, John F Trepanowski, Ewout W Steyerberg, John P A Ioannidis
OBJECTIVE:  To evaluate the frequency, validity, and relevance of statistically significant (P<0.05) sex-treatment interactions in randomized controlled trials in Cochrane meta-analyses. DESIGN:  Meta-epidemiological study. DATA SOURCES:  Cochrane Database of Systematic Reviews (CDSR) and PubMed. ELIGIBILITY CRITERIA FOR STUDY SELECTION:  Reviews published in the CDSR with sex-treatment subgroup analyses in the forest plots, using data from randomized controlled trials...
November 24, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27884175/network-meta-analyses-performed-by-contracting-companies-and-commissioned-by-industry
#7
Ewoud Schuit, John Pa Ioannidis
BACKGROUND: Industry commissions contracting companies to perform network meta-analysis for health technology assessment (HTA) and reimbursement submissions. Our objective was to estimate the number of network meta-analyses performed by consulting companies contracted by industry, to assess whether they were published, and to explore reasons for non-publication. METHODS: We searched MEDLINE for network meta-analyses of randomized trials. Papers were included if they had authors affiliated with any contracting company...
November 25, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27882536/brca1-and-brca2-mutation-testing-in-cyprus-a-population-based-study
#8
M A Loizidou, A Hadjisavvas, P Pirpa, E Spanou, T Delikurt, G A Tanteles, M Daniel, P Kountourakis, S Malas, G Ioannidis, I Zouvani, E Kakouri, D Papamichael, Y Marcou, V Anastasiadou, K Kyriacou
This paper presents the largest study in Cyprus evaluating the frequency and distribution of BRCA1/2 mutations in a high risk patient cohort. Deleterious mutations in the BRCA1/2 genes were identified in 68 of the 527 patients tested (13%). It is of interest that a quarter of those tested positive, did not have an extensive family history of breast/ovarian cancer but were diagnosed with early onset breast cancer, ovarian cancer under the age of 60 or triple negative breast cancer. The spectrum of mutations identified in our patient cohort is different compared to other Mediterranean countries...
October 13, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27866903/emerging-concepts-in-t-follicular-helper-cell-responses-to-malaria
#9
REVIEW
Diana S Hansen, Nyamekye Obeng-Adjei, Ann Ly, Lisa J Ioannidis, Peter D Crompton
Antibody responses to malaria and candidate malaria vaccines are short-lived in children, leaving them susceptible to repeated malaria episodes. Because T follicular helper (TFH) cells provide critical help to B cells to generate long-lived antibody responses, they have become the focus of recent studies of Plasmodium-infected mice and humans. The emerging data converge on common themes, namely, that malaria-induced TH1 cytokines are associated with the activation of (i) T-like memory TFH cells with impaired B cell helper function, and (ii) pre-TFH cells that acquire Th1-like features (T-bet expression, IFN-γ production), which impede their differentiation into fully functional TFH cells, thus resulting in germinal center dysfunction and suboptimal antibody responses...
November 17, 2016: International Journal for Parasitology
https://www.readbyqxmd.com/read/27855633/care-recipients-physical-frailty-is-independently-associated-with-subjective-burden-in-informal-caregivers-in-the-community-setting-a-cross-sectional-study
#10
Thom J Ringer, Afeez Abiola Hazzan, Courtney C Kennedy, Sarah Karampatos, Christopher Patterson, Sharon Marr, Brian Misiaszek, Tricia Woo, George Ioannidis, Alexandra Papaioannou
BACKGROUND: Physical frailty is associated with significant morbidity and mortality in community-dwelling older adults. Burden in informal caregivers of older adults causes significant physical and psychological distress. However, the relationship between these two clinical phenomena has not been extensively studied. This cross-sectional study evaluated the relationship between physical frailty of community-dwelling older adults attending an outpatient geriatric clinic and the subjective burden reported by their informal caregivers...
November 17, 2016: BMC Geriatrics
https://www.readbyqxmd.com/read/27842706/insomnia-from-drug-treatments-evidence-from-meta-analyses-of-randomized-trials-and-concordance-with-prescribing-information
#11
Anthony G Doufas, Orestis A Panagiotou, Periklis Panousis, Shane Shucheng Wong, John P A Ioannidis
OBJECTIVE: To determine whether drugs used to treat diverse conditions cause insomnia symptoms and whether their prescription information is concordant with this evidence. METHODS: We conducted a survey of meta-analyses (Cochrane Database of Systematic Reviews) and comparisons with package inserts compiled in the Physicians' Desk Reference (PDR). We identified randomized controlled trials (RCTs) in which any drug had been evaluated vs placebo and sleep had been assessed...
November 11, 2016: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/27837572/clinical-and-cognitive-factors-affecting-psychosocial-functioning-in-remitted-patients-with-bipolar-disorder
#12
G Konstantakopoulos, N Ioannidi, M Typaldou, D Sakkas, P Oulis
Impaired interpersonal, social, and occupational functioning is very often observed in patients with bipolar disorder, not only at the acute stages of the illness but in remission as well. This finding raises the question of multiple factors that might affect psychosocial functioning in bipolar patients, such as residual subsyndromal symptoms and neuropsychological deficits. Social cognition impairment, especially impaired Theory of Mind (ToM), might also play an important role in bipolar patients' every-day functioning, similarly to what was found in patients with schizophrenia...
July 2016: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/27832824/genome-of-the-asian-longhorned-beetle-anoplophora-glabripennis-a-globally-significant-invasive-species-reveals-key-functional-and-evolutionary-innovations-at-the-beetle-plant-interface
#13
Duane D McKenna, Erin D Scully, Yannick Pauchet, Kelli Hoover, Roy Kirsch, Scott M Geib, Robert F Mitchell, Robert M Waterhouse, Seung-Joon Ahn, Deanna Arsala, Joshua B Benoit, Heath Blackmon, Tiffany Bledsoe, Julia H Bowsher, André Busch, Bernarda Calla, Hsu Chao, Anna K Childers, Christopher Childers, Dave J Clarke, Lorna Cohen, Jeffery P Demuth, Huyen Dinh, HarshaVardhan Doddapaneni, Amanda Dolan, Jian J Duan, Shannon Dugan, Markus Friedrich, Karl M Glastad, Michael A D Goodisman, Stephanie Haddad, Yi Han, Daniel S T Hughes, Panagiotis Ioannidis, J Spencer Johnston, Jeffery W Jones, Leslie A Kuhn, David R Lance, Chien-Yueh Lee, Sandra L Lee, Han Lin, Jeremy A Lynch, Armin P Moczek, Shwetha C Murali, Donna M Muzny, David R Nelson, Subba R Palli, Kristen A Panfilio, Dan Pers, Monica F Poelchau, Honghu Quan, Jiaxin Qu, Ann M Ray, Joseph P Rinehart, Hugh M Robertson, Richard Roehrdanz, Andrew J Rosendale, Seunggwan Shin, Christian Silva, Alex S Torson, Iris M Vargas Jentzsch, John H Werren, Kim C Worley, George Yocum, Evgeny M Zdobnov, Richard A Gibbs, Stephen Richards
BACKGROUND: Relatively little is known about the genomic basis and evolution of wood-feeding in beetles. We undertook genome sequencing and annotation, gene expression assays, studies of plant cell wall degrading enzymes, and other functional and comparative studies of the Asian longhorned beetle, Anoplophora glabripennis, a globally significant invasive species capable of inflicting severe feeding damage on many important tree species. Complementary studies of genes encoding enzymes involved in digestion of woody plant tissues or detoxification of plant allelochemicals were undertaken with the genomes of 14 additional insects, including the newly sequenced emerald ash borer and bull-headed dung beetle...
November 11, 2016: Genome Biology
https://www.readbyqxmd.com/read/27816833/diet-body-size-physical-activity%C3%A2-and-risk-of-prostate-cancer-an-umbrella-review-of-the-evidence
#14
REVIEW
Georgios Markozannes, Ioanna Tzoulaki, Dimitra Karli, Evangelos Evangelou, Evangelia Ntzani, Marc J Gunter, Teresa Norat, John P Ioannidis, Konstantinos K Tsilidis
The existing literature on the relationship between diet, body size, physical activity and prostate cancer risk was summarised by the World Cancer Research Fund Continuous Update Project (CUP). An evaluation of the robustness of this evidence is required to help inform public health policy. The robustness of this evidence was evaluated using several criteria addressing evidence strength and validity, including the statistical significance of the random effects summary estimate and of the largest study in a meta-analysis, number of prostate cancer cases, between-study heterogeneity, 95% prediction intervals, small-study effects bias, excess significance bias and sensitivity analyses with credibility ceilings...
November 3, 2016: European Journal of Cancer
https://www.readbyqxmd.com/read/27807320/double-primary-venous-aneurysm-of-the-small-saphenous-vein
#15
Orestis Ioannidis, Ioannis Varnalidis, Konstantinos Alexandris, Christiana Anastasiadou, Angelos Megalopoulos
: Venous aneurysms are rare lesions and of little significance in every day clinical practice. While in many cases asymptomatic they can be the cause of great morbidity due to thrombosis and subsequent possibility of pulmonary embolism. Venous aneurysms are classified in deep and superficial according to affected vein. The diagnosis is based mainly on Doppler ultrasound, while computed tomography, magnetic resonance imaging and venography provide more details. Treatment of venous aneurysms should be surgical...
October 14, 2016: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/27793937/effect-of-olmesartan-on-the-level-of-oral-cancer-risk-factor-pai1
#16
Stavros Vassiliou, Emeka Nkenke, Nikos Lefantzis, Anastasios Ioannidis, Christos Yapijakis, Margarita Zoga, Veronica Papakosta, Spyridoula Derka, Chryssoula Nikolaou, Eleftherios Vairaktaris
AIM: To study if the angiotensin receptor blocker olmesartan reduces levels of plasminogen activator inhibitor 1 (PAI1), a risk factor for oral cancer, in a mouse model and therefore whether it could be used in the treatment of this malignancy. MATERIALS AND METHODS: Twelve transgenic PAI1 mice aged 16-20 weeks were divided in two groups each containing six animals. One group was given olmesartan every day for 30 days in drinking water in an amount corresponding to their weight, 0...
November 2016: Anticancer Research
https://www.readbyqxmd.com/read/27789483/very-large-treatment-effects-in-randomised-trials-as-an-empirical-marker-to-indicate-whether-subsequent-trials-are-necessary-meta-epidemiological-assessment
#17
Myura Nagendran, Tiago V Pereira, Grace Kiew, Douglas G Altman, Mahiben Maruthappu, John P A Ioannidis, Peter McCulloch
OBJECTIVE:  To examine whether a very large effect (VLE; defined as a relative risk of ≤0.2 or ≥5) in a randomised trial could be an empirical marker that subsequent trials are unnecessary. DESIGN:  Meta-epidemiological assessment of existing published data on randomised trials. DATA SOURCES:  Cochrane Database of Systematic Reviews (2010, issue 7) with data on subsequent large trials updated to 2015, issue 12. ELIGIBILITY CRITERIA:  All binary outcome forest plots were selected, which contained an index randomised trial with a VLE that was nominally statistically significant (P<0...
October 27, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27771972/the-epidemiology-of-first-episode-psychosis-in-early-intervention-in-psychosis-services-findings-from-the-social-epidemiology-of-psychoses-in-east-anglia-sepea-study
#18
James B Kirkbride, Yasir Hameed, Gayatri Ankireddypalli, Konstantinos Ioannidis, Carolyn M Crane, Mukhtar Nasir, Nikolett Kabacs, Antonio Metastasio, Oliver Jenkins, Ashkan Espandian, Styliani Spyridi, Danica Ralevic, Suneetha Siddabattuni, Ben Walden, Adewale Adeoye, Jesus Perez, Peter B Jones
OBJECTIVE: Few studies have characterized the epidemiology of first-episode psychoses in rural or urban settings since the introduction of early intervention psychosis services. To address this, the authors conducted a naturalistic cohort study in England, where such services are well established. METHOD: All new first-episode psychosis cases, 16-35 years old, presenting to early intervention psychosis services in the East of England were identified during 2 million person-years follow-up...
October 24, 2016: American Journal of Psychiatry
https://www.readbyqxmd.com/read/27748217/genetic-etiologies-of-comorbidity-and-stability-for-reading-difficulties-and-adhd-a-replication-study
#19
Sally J Wadsworth, John C DeFries, Erik G Willcutt, Bruce F Pennington, Richard K Olson
Because of recent concerns about the replication of published results in the behavioral and biomedical sciences (Ioannidis, PLoS Medicine, Vol. 2, 2005, p. e124; Open Science Collaboration, Science, Vol. 349, 2015, p. 943; Pashler & Wagenmakers, Perspectives on Psychological Science, Vol. 7, 2012, pp. 528-530), we have conducted a replication of our recently published analyses of longitudinal reading performance and attention deficit-hyperactivity disorder data from twin pairs selected for reading difficulties (Wadsworth et al...
December 2016: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/27739141/identification-of-black-pine-pinus-nigra-arn-heartwood-as-a-rich-source-of-bioactive-stilbenes-by-qnmr
#20
Kostas Ioannidis, Eleni Melliou, Paraskevi Alizoti, Prokopios Magiatis
BACKGROUND: Recently published studies have demonstrated the strong anti-inflammatory properties of Scots pine (Pinus sylvestris L.) heartwood extracts, related to its stilbene content. In order to find alternative sources of Pinus heartwood extracts rich in stilbenes, a large number of samples was investigated, using a new developed high throughput screening method based on qNMR. RESULTS: The new method enabled us to measure the levels of pinosylvin, pinosylvin monomethyl ether and pinosylvin dimethylether in heartwood extracts in only 45 seconds per sample...
October 14, 2016: Journal of the Science of Food and Agriculture
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