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https://www.readbyqxmd.com/read/28215052/predicting-pregnancy-outcomes-using-longitudinal-information-a-penalized-splines-mixed-effects-model-approach
#1
Rolando De la Cruz, Claudio Fuentes, Cristian Meza, Dae-Jin Lee, Ana Arribas-Gil
We propose a semiparametric nonlinear mixed-effects model (SNMM) using penalized splines to classify longitudinal data and improve the prediction of a binary outcome. The work is motivated by a study in which different hormone levels were measured during the early stages of pregnancy, and the challenge is using this information to predict normal versus abnormal pregnancy outcomes. The aim of this paper is to compare models and estimation strategies on the basis of alternative formulations of SNMMs depending on the characteristics of the data set under consideration...
February 19, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28215038/variable-selection-and-prediction-in-biased-samples-with-censored-outcomes
#2
Ying Wu, Richard J Cook
With the increasing availability of large prospective disease registries, scientists studying the course of chronic conditions often have access to multiple data sources, with each source generated based on its own entry conditions. The different entry conditions of the various registries may be explicitly based on the response process of interest, in which case the statistical analysis must recognize the unique truncation schemes. Moreover, intermittent assessment of individuals in the registries can lead to interval-censored times of interest...
February 18, 2017: Lifetime Data Analysis
https://www.readbyqxmd.com/read/28215036/serum-levels-of-homocysteine-at-admission-are-associated-with-post-stroke-depression-in-acute-ischemic-stroke
#3
Yan Li, Li-Li Cao, Lin Liu, Qin-De Qi
The primary purpose of this study was to assess the serum levels of homocysteine (HCY) at admission to the presence of post-stroke depression (PSD). From September 2014 to December 2015, first-ever acute ischemic stroke patients within the first 24 h after stroke onset were consecutively recruited and followed-up for 3 months. Based on the symptoms, diagnoses of depression were made in accordance with DSM-IV criteria for depression. By the time of 3 month after stroke, 238 had finished the follow-up and included in our study...
February 18, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28215033/anti-mutated-citrullinated-vimentin-antibodies-in-antiphospholipid-syndrome-diagnostic-value-and-relationship-with-clinical-features
#4
Cristiano Alessandri, Nancy Agmon-Levin, Fabrizio Conti, Carlo Perricone, Elena Ortona, Monica Pendolino, Antonella Capozzi, Federica Delunardo, Riccardo Mancini, Simona Truglia, Francesca Romana Spinelli, Fulvia Ceccarelli, Maurizio Sorice, Yehuda Shoenfeld, Guido Valesini
: Antiphospholipid antibodies (aPLs) are a heterogeneous group of autoantibodies essential for the diagnosis of antiphospholipid syndrome (APS) but do not predict clinical manifestations or disease progression. Hence, the co-presence of other antibodies may prove useful. Autoimmunity directed toward vimentin and other citrullinated peptides was established in rheumatoid arthritis (RA) and in other autoimmune conditions including systemic lupus erythematosus (SLE). We have previously described the presence of autoantibodies directed against vimentin/cardiolipin complex in patients with antiphospholipid syndrome (APS), but there are no data on the role of citrullinated vimentin in APS...
February 18, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28215018/responses-of-wintering-geese-to-the-designation-of-goose-foraging-areas-in-the-netherlands
#5
Kees Koffijberg, Hans Schekkerman, Henk van der Jeugd, Menno Hornman, Erik van Winden
The Netherlands is important for wintering migratory herbivorous geese, numbers of which have rapidly increased, leading to conflict with agriculture. In 2005/2006, a new goose management policy aimed to limit compensation payments to farmers by concentrating foraging geese in 80 000 ha of designated 'go' areas-where farmers received payment to accommodate them-and scaring geese from 'no go' areas elsewhere. Monthly national counts of four abundant goose species during 10 years prior to the new policy and in 8 years following implementation found that 57% of all goose days were spent within 'go' areas under the new management, the same as prior to implementation...
March 2017: Ambio
https://www.readbyqxmd.com/read/28215017/scaring-as-a-tool-to-alleviate-crop-damage-by-geese-revealing-differences-between-farmers-perceptions-and-the-scale-of-the-problem
#6
Caroline E Simonsen, Ingunn M Tombre, Jesper Madsen
Expanding populations of farmland foraging geese are causing escalating conflict with agriculture. We used questionnaires to investigate farmers´ perceptions in mid-Norway of spring staging geese and the extent to which they attempt to reduce pasture damage by goose scaring. We predicted farmers' scaring effort (a measure of dissatisfaction) to increase on fields closer to goose roosting sites where goose grazing intensity was highest (measured by dropping counts). Results showed no such relationship, suggesting that farmers' perception of goose use was not linked to actual goose use, but influenced by sociological factors and individual opinion...
March 2017: Ambio
https://www.readbyqxmd.com/read/28215014/management-of-a-dutch-resident-barnacle-goose-branta-leucopsis-population-how-can-results-from-counts-ringing-and-hunting-bag-statistics-be-reconciled
#7
Henk P van der Jeugd, Anne Kwak
The resident Dutch Northern Delta barnacle geese Branta leucopsis population expanded steadily since birds first bred in 1982, increasing agricultural conflict. Derogation shooting has been used since 2005 to scare geese from sensitive crops and to reduce population size. Numbers almost doubled to ca. 28 000 individuals during 2007-2014, despite annual removal of 15-25% of geese and adult and juvenile survival rates of 79 and 67% (cf. natural survival of 96% for both age classes). Simple population modelling, using estimated annual survival values and fixed fecundity, predicted a moderate increase to 21 500 individuals in 2014...
March 2017: Ambio
https://www.readbyqxmd.com/read/28214998/optimal-visual-haptic-integration-with-articulated-tools
#8
Chie Takahashi, Simon J Watt
When we feel and see an object, the nervous system integrates visual and haptic information optimally, exploiting the redundancy in multiple signals to estimate properties more precisely than is possible from either signal alone. We examined whether optimal integration is similarly achieved when using articulated tools. Such tools (tongs, pliers, etc) are a defining characteristic of human hand function, but complicate the classical sensory 'correspondence problem' underlying multisensory integration. Optimal integration requires establishing the relationship between signals acquired by different sensors (hand and eye) and, therefore, in fundamentally unrelated units...
February 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28214989/exposure-response-analyses-of-blood-pressure-and-heart-rate-changes-for-methylphenidate-in-healthy-adults
#9
Liang Li, Yaning Wang, Ramana S Uppoor, Mehul U Mehta, Tiffany Farchione, Mitchell V Mathis, Hao Zhu
The aim of the study was to evaluate the exposure-response (E-R) relationships of blood pressure (BP) and heart rate (HR) changes in healthy adults taking methylphenidate (MPH). Intensive time profiles of BP and HR from healthy adults in placebo and MPH treatment arms of seven clinical trials from the FDA internal database were utilized for this analysis. The analysis model contains a circadian component for placebo effect and an E-R component to describe drug effect. Internal validation was performed using goodness-of-fit plots and visual predictive check...
February 18, 2017: Journal of Pharmacokinetics and Pharmacodynamics
https://www.readbyqxmd.com/read/28214980/sil2r-ratio-as-early-marker-for-response-in-hairy-cell-leukemia-and-the-prognostic-relevance-of-il28b-genotype-to-interferon-%C3%AE-therapy
#10
Stéphanie Jud, Jeroen S Goede, Oliver Senn, Katharina Spanaus, Markus G Manz, Rudolf Benz
Interferon-α (IFNα) was the first effective drug therapy for hairy cell leukemia (HCL). Nowadays, it is used as an alternative treatment in selected patients. Due to unlimited treatment time, monitoring and early prediction of response are important. Moreover, IFNα is used in the therapy of chronic hepatitis C, where a single nucleotide polymorphism of interleukin-28B gene (IL28B) correlates with therapy response. The role of this polymorphism in therapy response of IFNα-treated patients with HCL is unknown...
February 18, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28214964/speckle-tracking-in-alcapa-patients-after-surgical-repair-as-predictor-of-residual-coronary-disease
#11
Biagio Castaldi, Vladimiro Vida, Elena Reffo, Massimo Padalino, Queenette Daniels, Giovanni Stellin, Ornella Milanesi
Surgical re-implantation of the left coronary artery (LCA) is the treatment of choice in anomalous origin of left coronary artery from pulmonary artery (ALCAPA). Despite normalization of left ventricular function after surgery, residual coronary lesions or myocardial fibrosis may be found. The aim of this study was to detect regional left ventricular dysfunction predictive of coronary lesions or residual myocardial fibrosis using speckle tracking. We enrolled ten patients treated with surgical re-implantation of LCA for ALCAPA...
February 18, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28214948/reduced-anticoagulation-variability-in-patients-on-warfarin-monitored-with-fiix-prothrombin-time-associates-with-reduced-thromboembolism-the-fiix-trial
#12
Alma Rut Oskarsdóttir, Brynja R Gudmundsdottir, Olafur S Indridason, Sigrun H Lund, David O Arnar, Einar S Bjornsson, Magnus K Magnusson, Hulda M Jensdottir, Brynjar Vidarsson, Charles W Francis, Pall T Onundarson
Fiix-prothrombin time (Fiix-PT) differs from traditional PT in being affected by reduced factor (F) II or FX only. In the randomized controlled Fiix-trial, patients on warfarin monitored with Fiix-PT (Fiix-warfarin patients) had fewer thromboembolisms (TE), similar major bleeding (MB) and more stable anticoagulation than patients monitored with PT (PT-warfarin patients). In the current Fiix-trial report we analyzed how reduced anticoagulation variability during Fiix-PT monitoring was reflected in patients with TE or bleeding...
February 18, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28214946/an-evaluation-of-feather-corticosterone-as-a-biomarker-of-fitness-and-an-ecologically-relevant-stressor-during-breeding-in-the-wild
#13
Christopher M Harris, Christine L Madliger, Oliver P Love
Feather corticosterone (CORT) levels are increasingly employed as biomarkers of environmental stress. However, it is unclear if feather CORT levels reflect stress and/or workload in the wild. We investigated whether feather CORT represents a biomarker of environmental stress and reproductive effort in tree swallows (Tachycineta bicolor). Specifically, we examined whether individual state and investment during reproduction could predict feather CORT levels in subsequently moulted feathers and whether those levels could predict future survival and reproductive success...
February 18, 2017: Oecologia
https://www.readbyqxmd.com/read/28214923/urinary-free-light-chains-may-help-to-identify-infection-in-patients-with-elevated-systemic-inflammation-due-to-rheumatic-disease
#14
Carsten P Bramlage, Britta Froelich, Manuel Wallbach, Joan Minguet, Clemens Grupp, Cornelia Deutsch, Peter Bramlage, Gerhard A Müller, Michael Koziolek
The risk of infection in patients with rheumatic diseases is elevated, but a clear marker to differentiate the cause of the systemic inflammation is missing. We assessed the ability urinary immunoglobulin free light chains (FLCs) to indicate the presence of infection in patients with rheumatic disease. We performed a retrospective analysis of patients with rheumatic disease attending the Georg-August University Hospital in Goettingen, Germany, from January 2011 to December 2013. Subjects were included if they had urine levels of κ and λ FLCs available...
February 18, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28214915/evaluation-of-the-gard-assay-in-a-blind-cosmetics-europe-study
#15
Henrik Johansson, Robin Gradin, Andy Forreryd, Maria Agemark, Kathrin Zeller, Angelica Johansson, Olivia Larne, Erwin van Vliet, Carl Borrebaeck, Malin Lindstedt
Chemical hypersensitivity is an immunological response towards foreign substances, commonly referred to as sensitizers, which gives rise primarily to the clinical symptoms known as allergic contact dermatitis. For the purpose of mitigating risks associated with consumer products, chemicals are screened for sensitizing effects. Historically, such predictive screenings have been performed using animal models. However, due to industrial and regulatory demand, animal models for the purpose of sensitization assessment are being replaced by animal-free testing methods, a global trend that is spreading across industries and market segments...
February 17, 2017: ALTEX
https://www.readbyqxmd.com/read/28214914/the-impact-of-bitter-taste-receptor-genetics-on-culturable-bacteria-in-chronic-rhinosinusitis
#16
D I Rom, J M Christensen, R Alvarado, R Sacks, R J Harvey
BACKGROUND: Extra-oral bitter taste receptors have been associated with innate bacterial defence mechanisms. Genetic variation in T2R38 functionality has been shown to be associated with susceptibility to upper respiratory tract infections and chronic rhinosinusitis (CRS). We sought to independently assess the influence of bitter taste receptor genotype on the presence of culturable bacteria in the sinuses. METHODOLOGY: A cross-sectional analysis of patients with CRS undergoing surgery was performed...
February 19, 2017: Rhinology
https://www.readbyqxmd.com/read/28214897/mir-125b-regulates-the-osteogenic-differentiation-of-human-mesenchymal-stem-cells-by-targeting-bmpr1b
#17
Huaqing Wang, Zhao Xie, Tianyong Hou, Zhiqiang Li, Ke Huang, Jicheng Gong, Wei Zhou, Kanglai Tang, Jianzhong Xu, Shiwu Dong
BACKGROUND/AIMS: Osteogenic differentiation of mesenchymal stem cells (MSCs) plays a crucial role in bone regeneration and bone reparation. This complex process is regulated precisely and firmly by specific factors. Recent studies have demonstrated that miR-125b regulates osteogenic differentiation, but little is known about the molecular mechanisms of this regulation. Furthermore, how miR-125b regulates the osteogenic differentiation of MSCs still needs elucidation. METHODS: In the present study, human bone marrow-derived mesenchymal stem cells (hBMSCs) were isolated and induced to osteoblasts with miR-125b inhibition or overexpression...
January 31, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214872/higher-numbers-of-t-bet-tumor-infiltrating-lymphocytes-associate-with-better-survival-in-human-epithelial-ovarian-cancer
#18
Yun Xu, Lujun Chen, Bin Xu, Yuqi Xiong, Min Yang, Xiaohui Rui, Liangrong Shi, Changping Wu, Jingting Jiang, Binfeng Lu
BACKGROUND/AIMS: T-bet, a member of the T-box family of transcription factors, is a key marker of type I immune response within the tumor microenvironment, and has been previously reported by us to serve as an important prognostic indicator for human gastric cancer patients and a potential biomarker for immunotherapy. In the present study, we aimed to assess the clinical significance and prognostic value of T-bet+ tumor-infiltrating lymphocytes in human epithelial ovarian cancer. METHODS: The immunohistochemistry was used to analyze the infiltration density of T-bet+ lymphoid cells in human epithelial ovarian cancer tissues, and the flow cytometry analysis was used to further analyze the presence of T-bet+ tumor-infiltrating lymphocytes subgroups in cancer tissues...
January 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214846/circulating-mir-30d-predicts-survival-in-patients-with-acute-heart-failure
#19
Junjie Xiao, Rongrong Gao, Yihua Bei, Qiulian Zhou, Yanli Zhou, Haifeng Zhang, Mengchao Jin, Siqi Wei, Kai Wang, Xuejuan Xu, Wenming Yao, Dongjie Xu, Fang Zhou, Jingfa Jiang, Xinli Li, Saumya Das
BACKGROUND/AIMS: Identification of novel biomarkers to identify acute heart failure (AHF) patients at high risk of mortality is an area of unmet clinical need. Recently, we reported that the baseline level of circulating miR-30d was associated with left ventricular remodeling in response to cardiac resynchronization therapy in advanced chronic heart failure patients. However, the role of circulating miR-30d as a prognostic marker of survival in patients with AHF has not been explored...
February 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214794/cost-effectiveness-of-intensifying-lipid-lowering-therapy-with-statins-based-on-individual-absolute-benefit-in-coronary-artery-disease-patients
#20
Manon C Stam-Slob, Yolanda van der Graaf, Jacoba P Greving, Jannick A N Dorresteijn, Frank L J Visseren
BACKGROUND: A validated prediction model estimates the absolute benefit of intensive versus standard lipid-lowering therapy (LLT) with statins on next major cardiovascular events for individual patients with coronary artery disease. We aimed to assess whether targeting intensive LLT therapy to coronary artery disease patients with the highest predicted absolute benefit is cost-effective compared to treating all with standard or all with intensive LLT. METHODS AND RESULTS: A lifetime Markov model was constructed for coronary artery disease patients (n=10 000) with mean age 61 years...
February 18, 2017: Journal of the American Heart Association
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