11,291 real negative results, null findings, and replication failures in Medicine · Negative / Null Result Report. Search the index →
WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.
Hyehyun Jeong, Kyu‐pyo Kim, Jae Ho Jeong et al. · 2023 · Hepatology
BACKGROUND AND AIMS: The effectiveness of gemcitabine-based adjuvant chemotherapy is unclear in cholangiocarcinoma. We investigated the role of adjuvant gemcitabine plus cisplatin (GemCis) in a homogeneous group of high-risk patients with…
View details →Tom Koeman, Pauline Slottje, Leo J. Schouten et al. · 2017 · Occupational and Environmental Medicine
OBJECTIVE: To prospectively study suspected occupational risk factors for amyotrophic lateral sclerosis (ALS). METHODS: For this case-cohort analysis within the prospective Netherlands Cohort Study, 58 279 men and 62 573 women aged 55-69…
View details →Yoshimasa Miyagawa, Kazuhiro Araki, Ayako Bun et al. · 2018 · Clinical Breast Cancer
INTRODUCTION: Although eribulin and nab-paclitaxel are chemotherapy agents widely used for locally advanced or metastatic breast cancer (MBC), their predictive factors remain unknown. Because the absolute neutrophil-to-lymphocyte ratio…
View details →Kevin J. McHale, Joshua C. Rozell, Andrew H. Milby et al. · 2016 · The American Journal of Sports Medicine
BACKGROUND: Tarsometatarsal (Lisfranc) joint injuries commonly occur in National Football League (NFL) competition; however, the career effect of these injuries is unknown. PURPOSE: To define the time to return to competition for NFL…
View details →Sae‐Won Han, Hyun‐Jung Lee, Jeong Mo Bae et al. · 2012 · International Journal of Cancer
The prognostic impact of CpG island methylator phenotype (CIMP) and microsatellite instability (MSI) on the treatment outcome of colon cancer patients receiving adjuvant 5-fluorouracil/leucovorin/oxaliplatin (FOLFOX) is unclear. We…
View details →Simone Baldi, Marta Menicatti, Giulia Nannini et al. · 2021 · Nutrients
Altered circulating levels of free fatty acids (FFAs), namely short chain fatty acids (SCFAs), medium chain fatty acids (MCFAs), and long chain fatty acids (LCFAs), are associated with metabolic, gastrointestinal, and malignant diseases. Hence, we compared the serum FFA profile of patients with celiac disease (CD), adenomatous polyposis (AP), and colorectal cancer (CRC) to healthy controls (HC). We enrolled 44 patients (19 CRC, 9 AP, 16 CD) and 16 HC. We performed a quantitative FFA evaluation with the gas chromatography-mass spectrometry method (GC-MS), and we performed Dirichlet-multinomial
View details →Shoji Kawakami, Yoshio Tahara, Teruo Noguchi et al. · 2016 · Circulation Journal
BACKGROUND: Prehospital ECG improves survival following ST-segment elevation myocardial infarction (STEMI). Although a new International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment…
View details →Shigeyuki Tamura, Atsushi Takeno, Hirofumi Miki · 2011 · International Journal of Surgical Oncology
Gastric cancer is one of the most common causes of cancer-related death worldwide. Surgical resection with lymph node dissection is the only potentially curative therapy for gastric cancer. However, the appropriate extent of lymph node dissection accompanied by gastrectomy for cancer remains controversial. In East Asian countries, especially in Japan and Korea, D2 lymph node dissection has been regularly performed as a standard procedure. In Western countries, surgeons perform gastrectomy with D1 dissection only because D2 is associated with high mortality and morbidity compared to those assoc
View details →Yong‐Hao Pua, Hakmook Kang, Julian Thumboo et al. · 2019 · Knee Surgery Sports Traumatology Arthroscopy
PURPOSE: Machine-learning methods are flexible prediction algorithms with potential advantages over conventional regression. This study aimed to use machine learning methods to predict post-total knee arthroplasty (TKA) walking limitation,…
View details →Juliana C.N. Chan, Béatrice Sauvé, Sonya Tokmakejian et al. · 2014 · Experimental and Clinical Endocrinology & Diabetes
OBJECTIVE: Hair analysis has been demonstrated to accurately reflect exposure to drug abuse, environmental toxins and exogenous hormones. We tested the feasibility of measuring cortisol and testosterone in hair of healthy and obese…
View details →David J. Cohen, Tara A. Lavelle, Ben van Hout et al. · 2011 · Catheterization and Cardiovascular Interventions
OBJECTIVES: To evaluate the cost-effectiveness of alternative approaches to revascularization for patients with three-vessel or left main coronary artery disease (CAD). BACKGROUND: Previous studies have demonstrated that, despite higher…
View details →Kristi McIntyre, Joyce O’Shaughnessy, Lee S. Schwartzberg et al. · 2014 · Breast Cancer Research and Treatment
Eribulin mesylate, a novel non-taxane microtubule dynamics inhibitor, is approved for treatment of metastatic breast cancer (MBC) in patients who have previously received at least 2 chemotherapeutic regimens for MBC that should have…
View details →Marco Colombo, Stuart J. McGurnaghan, Luke A. K. Blackbourn et al. · 2020 · Diabetologia
Abstract Aims/hypothesis We examined whether candidate biomarkers in serum or urine can improve the prediction of renal disease progression in type 1 diabetes beyond prior eGFR, comparing their performance with urinary albumin/creatinine ratio (ACR). Methods From the population-representative Scottish Diabetes Research Network Type 1 Bioresource (SDRNT1BIO) we sampled 50% and 25% of those with starting eGFR below and above 75 ml min −1 [1.73 m] −2 , respectively ( N = 1629), and with median 5.1 years of follow-up. Multiplexed ELISAs and single molecule array technology were used to measure nin
View details →Abhishek Mathur, Sharona Ross, Kenneth Luberice et al. · 2014 · The American Surgeon
Negative margins are the goal with pancreaticoduodenectomy for pancreatic adenocarcinoma. Thereby, margins are assessed intraoperatively with frozen section analysis and negative margins are pursued. This study was undertaken to determine…
View details →Pras Pathmanathan, Gary R. Mirams, James Southern et al. · 2011 · International Journal for Numerical Methods in Biomedical Engineering
Abstract Finite element (FE) cardiac electro‐physiology solvers commonly have ionic current determined at mesh nodes but required element interiors. We consider two interpolation approaches: (i) ionic current interpolation (ICI), where nodal ionic currents are linearly interpolated into the element and (ii) state variable interpolation (SVI), where cell model state variables are interpolated instead, from which the ionic current is evaluated. We explain why SVI leads to a method which is massively more computationally demanding than ICI (more than might originally be expected), and then demons
View details →Meredith F. Campbell, Eitan Friedman, William H. Green et al. · 2017 · International Pharmacopsychiatry
Blood serotonin levels were measured in schizophrenic children, all of whom showed manifestations of illness in the first 2 years of life, and controls. Serotonin levels were higher in patients (mean = 0.267 mug/ml) than in controls (mean…
View details →Wen-Shan Wu, Li-Ru Chen, Kuo-Hu Chen · 2025 · International Journal of Molecular Sciences
Platelet-rich plasma (PRP) is an autologous blood-derived concentrate increasingly utilized in regenerative medicine for its ability to accelerate healing and tissue repair. PRP is broadly classified by leukocyte content, fibrin architecture, and platelet concentration, with classification systems developed to standardize characterization. Preparation methods, including single- or double-spin centrifugation and buffy coat techniques, influence the final composition of PRP, determining the relative proportions of platelets, leukocytes, plasma proteins, and extracellular vesicles. These componen
View details →Nicole M. Warrington, Rebecca C. Richmond, Bjarke Fenstra et al. · 2017 · International Journal of Obesity
BACKGROUND: Clinical recommendations to limit gestational weight gain (GWG) imply high GWG is causally related to adverse outcomes in mother or offspring, but GWG is the sum of several inter-related complex phenotypes (maternal fat deposition and vascular expansion, placenta, amniotic fluid and fetal growth). Understanding the genetic contribution to GWG could help clarify the potential effect of its different components on maternal and offspring health. Here we explore the genetic contribution to total, early and late GWG. PARTICIPANTS AND METHODS: A genome-wide association study was used to
View details →Clarissa S. Whiting, Wouter Hoogkamer, Rodger Kram · 2021 · Journal of sport and health science/Journal of Sport and Health Science
BACKGROUND: Compared to conventional racing shoes, Nike Vaporfly 4% running shoes reduce the metabolic cost of level treadmill running by 4%. The reduction is attributed to their lightweight, highly compliant, and resilient midsole foam…
View details →Andrew Poppe, Deanna M. Barch, Cameron S. Carter et al. · 2016 · Schizophrenia Bulletin
Patients with schizophrenia (SZ) previously demonstrated specific deficits in an executive function known as goal maintenance, associated with reduced middle frontal gyrus (MFG) activity. This study aimed to validate a new tool-the Dot…
View details →Sanjay Yadla, George M. Ghobrial, Peter G. Campbell et al. · 2015 · Journal of Neurosurgery Spine
OBJECT: Complications after spine surgery have an impact on overall outcome and health care expenditures. The increased cost of complications is due in part to associated prolonged hospital stays. The authors propose that certain…
View details →Elaine Ku, Dawei Xie, Michael G. Shlipak et al. · 2015 · Journal of the American Society of Nephrology
Measured GFR (mGFR) has long been considered the gold standard measure of kidney function, but recent studies have shown that mGFR is not consistently superior to eGFR in explaining CKD-related comorbidities. The associations between…
View details →Seulkee Lee, Seonyoung Kang, Yeonghee Eun et al. · 2021 · Arthritis Research & Therapy
BACKGROUND: Few studies on rheumatoid arthritis (RA) have generated machine learning models to predict biologic disease-modifying antirheumatic drugs (bDMARDs) responses; however, these studies included insufficient analysis on important features. Moreover, machine learning is yet to be used to predict bDMARD responses in ankylosing spondylitis (AS). Thus, in this study, machine learning was used to predict such responses in RA and AS patients. METHODS: Data were retrieved from the Korean College of Rheumatology Biologics therapy (KOBIO) registry. The number of RA and AS patients in the traini
View details →Jonathan E. Rosenberg, Se Hoon Park, Vadim Kozlov et al. · 2022 · Journal of Clinical Oncology
PURPOSE: Homologous recombination repair gene mutations (HRRm) are common in urothelial carcinoma (UC), rendering tumor cells sensitive to poly (ADP-ribose) polymerase (PARP) inhibition. We assessed efficacy and safety of durvalumab…
View details →Joanna Lankester, Daniela Zanetti, Erik Ingelsson et al. · 2021 · PLoS ONE
Observational studies suggest alcohol use promotes the development of some adverse cardiometabolic traits but protects against others including outcomes related to coronary artery disease. We used Mendelian randomization (MR) to explore causal relationships between the degree of alcohol consumption and several cardiometabolic traits in the UK Biobank. Using the well-established ADH1B Arg47His variant (rs1229984) and up to 24 additional SNPs recently found to be associated with alcohol consumption in an independent dataset as instruments, we conducted two-stage least squares and inverse weighte
View details →Pedro Weslley Rosário, Alexandre Lemos Silva, Michelle Aparecida Ribeiro Borges et al. · 2015 · Archives of Endocrinology and Metabolism
The objective of this study was to evaluate whether Doppler ultrasound (DUS) is of additional value to gray-scale ultrasound (GSUS) in predicting the benign or malignant nature of thyroid nodules. A total of 1,502 solid thyroid nodules ≥ 10 mm were evaluated. Suspicious vascularity (predominantly or exclusively central blood flow) was observed in only 5% of the nodules. This finding showed 96% specificity, but only 15% sensitivity. GSUS alone showed sensitivity and specificity of 88.7% and 68.2%, respectively, which did not improve with the addition of DUS (sensitivity of 89.4% and specificity
View details →Andreas Kuehnl, Pavlos Tsantilas, Christoph Knappich et al. · 2016 · Circulation Cardiovascular Interventions
BACKGROUND: Associations between hospital volume and the risk of stroke or death following carotid endarterectomy (CEA) and carotid artery stenting (CAS) on a national level in Germany were analyzed. METHODS AND RESULTS: Secondary data…
View details →Jun Wu, Jing Wang, Qiang Su et al. · 2018 · OncoTargets and Therapy
Background: Traditional chemotherapy and molecular targeted therapy have shown modest effects on the survival of patients with pancreatic cancer. The current study aimed to investigate the antitumor effects of apatinib, Astragalus…
View details →John C. Morrill, Tetsuro Ikegami, Naoko Yoshikawa-Iwata et al. · 2010 · PLoS ONE
BACKGROUND: Rift Valley fever virus (RVFV), a member of the genus Phlebovirus within the family Bunyaviridae, is a negative-stranded RNA virus with a tripartite genome. RVFV is transmitted by mosquitoes and causes fever and severe hemorrhagic illness among humans, while in livestock it causes fever and high abortion rates. METHODOLOGY/PRINCIPAL FINDINGS: Sequence analysis showed that a wild-type RVFV ZH501 preparation consisted of two major viral subpopulations, with a single nucleotide heterogeneity at nucleotide 847 of M segment (M847); one had a G residue at M847 encoding glycine in a major
View details →János Kálmán, Loes M. Olde Loohuis, Annabel Vreeker et al. · 2021 · The British Journal of Psychiatry
BACKGROUND: Studying phenotypic and genetic characteristics of age at onset (AAO) and polarity at onset (PAO) in bipolar disorder can provide new insights into disease pathology and facilitate the development of screening tools. AIMS: To examine the genetic architecture of AAO and PAO and their association with bipolar disorder disease characteristics. METHOD: Genome-wide association studies (GWASs) and polygenic score (PGS) analyses of AAO (n = 12 977) and PAO (n = 6773) were conducted in patients with bipolar disorder from 34 cohorts and a replication sample (n = 2237). The association of on
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