Negative / Null Result ReportOpen accessNeuroscience
Susan G. Brown, Ryan K.M. Ikeuchi, Daniel R. Lucas · 2014 · Health Psychology and Behavioral Medicine
The interaction between the behavioral and physiological immune systems provides fertile ground for research. Here, we examine the interactions between fear of disease, collectivism/individualism, disgust, visual perception and salivary…
View details →Negative / Null Result ReportOpen accessMathematics
Andreas Deutsch, Josué Manik Nava-Sedeño, Simon Syga et al. · 2021 · PLoS Computational Biology
Collective dynamics in multicellular systems such as biological organs and tissues plays a key role in biological development, regeneration, and pathological conditions. Collective tissue dynamics-understood as population behaviour arising from the interplay of the constituting discrete cells-can be studied with on- and off-lattice agent-based models. However, classical on-lattice agent-based models, also known as cellular automata, fail to replicate key aspects of collective migration, which is a central instance of collective behaviour in multicellular systems. To overcome drawbacks of class
View details →Negative / Null Result ReportEngineering
Matthias Langer, Ashley Hall, Zhen He et al. · 2018 · IEEE Transactions on Parallel and Distributed Systems
Many distributed deep learning systems have been published over the past few years, often accompanied by impressive performance claims. In practice these figures are often achieved in high performance computing (HPC) environments with fast…
View details →Negative / Null Result ReportOpen accessMedicine
Jianghua Zhou, Bin Wu, Wenxin Wang et al. · 2020 · World Journal of Clinical Cases
BACKGROUND: Dipeptidyl peptidase-4 (DPP4) is commonly targeted to achieve glycemic control and has potent anti-inflammatory and immunoregulatory effects. Recent structural analyses indicated a potential tight interaction between DPP4 and…
View details →Negative / Null Result ReportOpen accessMedicine
Manuel Blesa, Paola Galdi, Gemma Sullivan et al. · 2020 · Frontiers in Neurology
Preterm birth is closely associated with cognitive impairment and generalized dysconnectivity of neural networks inferred from water diffusion MRI (dMRI) metrics. Peak width of skeletonized mean diffusivity (PSMD) is a metric derived from histogram analysis of mean diffusivity across the white matter skeleton, and it is a useful biomarker of generalized dysconnectivity and cognition in adulthood. We calculated PSMD and five other histogram based metrics derived from diffusion tensor imaging (DTI) and neurite orientation and dispersion imaging (NODDI) in the newborn, and evaluated their accurac
View details →Negative / Null Result ReportOpen accessPsychology
Stijn A.H. Friederichs, Anke Oenema, Catherine Bolman et al. · 2016 · Psychology and Health
OBJECTIVE: This study explores whether a web-based physical activity (PA) intervention grounded in self-determination theory (SDT) and motivational interviewing (MI) is more effective and better appreciated than a traditional web-based PA…
View details →Negative / Null Result ReportMedicine
Xuelian He, Junhong Xia, Chunming Wang et al. · 2011 · Animal Genetics
Prolactin (encoded by PRL) is a multifunctional hormone involved in osmoregulation, reproduction, growth, development, immunomodulation, endocrine and metabolic regulation. We cloned the full-length cDNA of Asian seabass PRL, searched for…
View details →Negative / Null Result ReportMedicine
Taro Oshikiri, Hodaka Numasaki, Junya Oguma et al. · 2021 · Annals of Surgery
OBJECTIVE: To clarify whether routine thoracic duct (TD) resection improves the prognosis of patients with esophageal cancer after radical esophagectomy. SUMMARY OF BACKGROUND DATA: Although TD resection can cause nutritional disadvantage…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Kagistia Hana Utami, Nur Amirah Binte Mohammad Yusof, Jing Eugene Kwa et al. · 2020 · Molecular Autism
FXS is the most common genetic cause of intellectual (ID) and autism spectrum disorders (ASD). FXS is caused by loss of FMRP, an RNA-binding protein involved in the translational regulation of a large number of neuronal mRNAs. Absence of FMRP has been shown to lead to elevated protein synthesis and is thought to be a major cause of the synaptic plasticity and behavioural deficits in FXS. The increase in protein synthesis results in part from abnormal activation of key protein translation pathways downstream of ERK1/2 and mTOR signalling. Pharmacological and genetic interventions that attenuate
View details →Negative / Null Result ReportOpen accessMedicine
Evan M. Graboyes, Kevin Y. Zhan, Elizabeth Garrett‐Mayer et al. · 2017 · Cancer
BACKGROUND: The current study was conducted to determine the effect of postoperative radiotherapy (PORT) on overall survival in patients with surgically managed pT3-T4aN0 laryngeal squamous cell carcinoma (SCC). METHODS: A review of the…
View details →Negative / Null Result ReportOpen accessMedicine
Tasneem Zaihra, Christopher J. Walsh, Sara Ahmed et al. · 2016 · BMC Pulmonary Medicine
BACKGROUND: Although the heterogeneous nature of asthma has prompted asthma phenotyping with physiological or biomarker data, these studies have been mostly cross-sectional. Longitudinal studies that assess the stability of phenotypes based on a combination of physiological, clinical and biomarker data are currently lacking. Our objective was to assess the longitudinal stability of clusters derived from repeated measures of airway and physiological data over a 1-year period in moderate and severe asthmatics. METHODS: A total of 125 subjects, 48 with moderate asthma (MA) and 77 with severe asth
View details →Negative / Null Result ReportOpen accessMedicine
Byung Kook Lee, In Soo Cho, Joo Suk Oh et al. · 2018 · PLoS ONE
INTRODUCTION: The aim of this trial was to investigate the effect of a continuous infusion of a neuromuscular blockade (NMB) in comatose out-of-hospital cardiac arrest (OHCA) subjects who underwent targeted temperature management (TTM). METHODS: In this open-label, multicenter trial, subjects resuscitated from OHCA were randomly assigned to receive either NMB (38 subjects) or placebo (43 subjects) for 24 hours. Sedatives and analgesics were given according to the protocol of each hospital during TTM. The primary outcome was serum lactate levels at 24 hours after drug infusion. The secondary ou
View details →Negative / Null Result ReportOpen accessMedicine
Pierre‐Édouard Bollaert, Alexandra Monnier, Francis Schneider et al. · 2023 · Critical Care
BACKGROUND: In critically ill patients, positive fluid balance is associated with excessive mortality. The POINCARE-2 trial aimed to assess the effectiveness of a fluid balance control strategy on mortality in critically ill patients. METHODS: POINCARE-2 was a stepped wedge cluster open-label randomized controlled trial. We recruited critically ill patients in twelve volunteering intensive care units from nine French hospitals. Eligible patients were ≥ 18 years old, under mechanical ventilation, admitted to one of the 12 recruiting units for > 48 and ≤ 72 h, and had an expected length of stay
View details →Negative / Null Result ReportOpen accessMedicine
Morten Vester‐Andersen, Tina Waldau, Jørn Wetterslev et al. · 2015 · British journal of surgery
BACKGROUND: Emergency abdominal surgery carries a considerable risk of death and postoperative complications. Early detection and timely management of complications may reduce mortality. The aim was to evaluate the effect and feasibility…
View details →Negative / Null Result ReportOpen accessNeuroscience
Ashley M. Brouillette, Gülin Öz, Christopher M. Gómez · 2015 · Disease Markers
Neurodegenerative diseases, including the spinocerebellar ataxias (SCA), would benefit from the identification of reliable biomarkers that could serve as disease subtype-specific and stage-specific indicators for the development and monitoring of treatments. We analyzed the cerebrospinal fluid (CSF) level of tau, α-synuclein, DJ-1, and glial fibrillary acidic protein (GFAP), proteins previously associated with neurodegenerative processes, in patients with the autosomal dominant SCA1, SCA2, and SCA6, and the sporadic disease multiple system atrophy, cerebellar type (MSA-C), compared with age-ma
View details →Negative / Null Result ReportMedicine
Kazunari Misawa, Yoshinari Mochizuki, Munetoshi Sakai et al. · 2019 · British journal of surgery
BACKGROUND: A survival benefit of extensive intraoperative peritoneal lavage (EIPL) has been reported in patients with gastric cancer with positive peritoneal cytology. The hypothesis of this study was that EIPL may reduce peritoneal…
View details →Negative / Null Result ReportOpen accessDecision Sciences
Felix Chopra, Ingar Haaland, Christopher Roth et al. · 2023 · The Economic Journal
Abstract We examine how the evaluation of research studies in economics depends on whether a study yielded a null result. Studies with null results are perceived to be less publishable, of lower quality, less important and less precisely…
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Prayut Jain, Shashi Jain · 2019 · Risks
The Hierarchical risk parity (HRP) approach of portfolio allocation, introduced by Lopez de Prado (2016), applies graph theory and machine learning to build a diversified portfolio. Like the traditional risk-based allocation methods, HRP…
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Carl J. Rothfels, Anne K. Johnson, Michael D. Windham et al. · 2014 · TAXON
Abstract Here we present the first nuclear phylogeny for Cystopteridaceae (Polypodiales), using the single‐copy locus gapCp “ short ”. This phylogeny corroborates broad results from plastid data in demonstrating strong support for the…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Urko M. Marigorta, Óscar Lao, Ferrán Casals et al. · 2011 · BMC Genomics
BACKGROUND: Searching for associations between genetic variants and complex diseases has been a very active area of research for over two decades. More than 51,000 potential associations have been studied and published, a figure that keeps increasing, especially with the recent explosion of array-based Genome-Wide Association Studies. Even if the number of true associations described so far is high, many of the putative risk variants detected so far have failed to be consistently replicated and are widely considered false positives. Here, we focus on the world-wide patterns of replicability of
View details →Negative / Null Result ReportOpen accessPsychology
Janna N. Vrijsen, Ben Grafton, Ernst H. W. Koster et al. · 2024 · Behaviour Research and Therapy
Cognitive bias modification (CBM) has evolved from an experimental method testing cognitive mechanisms of psychopathology to a promising tool for accessible digital mental health care. While we are still discovering the conditions under which clinically relevant effects occur, the dire need for accessible, effective, and low-cost mental health tools underscores the need for implementation where such tools are available. Providing our expert opinion as Association for Cognitive Bias Modification members, we first discuss the readiness of different CBM approaches for clinical implementation, the
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Iacopo Morchio, Christian Moser · 2026 · American Economic Review
Using linked employer-employee data from Brazil, we document a significant gender pay gap, which is largely attributed to women working at lower-paying employers. To interpret this fact, we develop an equilibrium search model with…
View details →Negative / Null Result ReportOpen accessMathematics
Murray G. Efford · 2026 · Ecology
Spatially explicit capture-recapture (SECR) methods are used widely to estimate animal population density and related parameters. Maximum likelihood has been applied to two flavors of the SECR model-a full model that includes absolute…
View details →Negative / Null Result ReportNeuroscience
Fabian A. Soto · 2018 · Journal of Experimental Psychology General
In a recent article, Maes et al. (2016) report the results from 15 experiments in the blocking effect, all of which failed to replicate the basic phenomenon. Whereas Maes et al. did not dispute the reality of the blocking effect, they…
View details →Negative / Null Result ReportOpen accessMedicine
Hazem Aboaid, Taimur Khalid, Abbas Hussain et al. · 2025 · Frontiers in Immunology
Head and neck squamous cell carcinoma (HNSCC) remains a challenging malignancy with suboptimal survival outcomes despite advances in surgery, radiotherapy, and chemotherapy. Immunotherapy, particularly immune checkpoint inhibitors (ICIs) targeting programmed cell death protein 1 (PD-1)/programmed cell death ligand 1 (PD-L1), has transformed treatment paradigms, yet its full potential in HNSCC is still being explored. This review evaluates the current landscape of immunotherapy in both locally advanced (LA) and recurrent/metastatic (R/M) HNSCC, discussing key clinical trials, emerging biomarker
View details →Negative / Null Result ReportOpen accessMedicine
Marika Fallenius, Markus B. Skrifvars, Matti Reinikainen et al. · 2017 · Scandinavian Journal of Trauma Resuscitation and Emergency Medicine
BACKGROUND: Intensive care scoring systems are widely used in intensive care units (ICU) around the world for case-mix adjustment in research and benchmarking. The aim of our study was to investigate the usefulness of common intensive care scoring systems in predicting mid-term mortality in patients with spontaneous intracerebral hemorrhage (ICH) treated in intensive care units (ICU). METHODS: We performed a retrospective observational study including adult patients with spontaneous ICH treated in Finnish ICUs during 2003-2012. We used six-month mortality as the primary outcome of interest. We
View details →Negative / Null Result ReportOpen accessSocial Sciences
Imad Bou Akl, Fatima Ghaddar, Ramzi Sabra et al. · 2011 · The Journal of Clinical Pharmacology
The purpose of this study was to formulate evidence-based recommendations on whether to deliver the team-based learning (TBL)-designed clinical pharmacology course at the American University of Beirut Faculty of Medicine (AUBFM) during the…
View details →Negative / Null Result ReportDentistry
Chia Wen Tsai, Wen Shin Chang, Kuo Cheng Lin et al. · 2014 · PubMed
Interleukin-10 (IL10) is an immunosuppressive cytokine which may facilitate carcinogenesis by down-regulating interferon-gamma production and supporting tumor escape from the immune response. Polymorphisms within the promoter of IL10 gene…
View details →Negative / Null Result ReportAgricultural and Biological Sciences
Nanike Esterhuizen, Susana Clusella‐Trullas, Corné E. van Daalen et al. · 2014 · Journal of Experimental Biology
The influence of thermal history on temperature-dependent flight performance was investigated in an invasive agricultural pest insect, Ceratitis capitata (Diptera: Tephritidae). Flies were exposed to one of four developmental acclimation…
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
S. Heirbaut, Xiaoping Jing, Barbara Stefańska et al. · 2022 · Journal of Dairy Science
Data on metabolic profiles of blood sampled at d 3, 6, 9, and 21 in lactation from 117 lactations (99 cows) were used for unsupervised k-means clustering. Blood metabolic parameters included -hydroxybutyrate (BHB), nonesterified fatty acids, glucose, insulin-like growth factor-1 (IGF-1) and insulin. Clustering relied on the average and range of the 5 blood parameters of all 4 sampling days. The clusters were labeled as imbalanced (n = 42) and balanced (n = 72) metabolic status based on the values of the blood parameters. Various random forest models were built to predict the metabolic cluster
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