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11,287 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.

Negative / Null Result ReportOpen accessMedicine

Reducing the Intensity and Volume of Interval Training Diminishes Cardiovascular Adaptation but Not Mitochondrial Biogenesis in Overweight/Obese Men

John Colin Boyd, Craig A. Simpson, Mary E. Jung et al. · 2013 · PLoS ONE

OBJECTIVE: The purpose of this research was to determine if the adaptations to high intensity interval training (HIT) are mitigated when both intensity and training volume (i.e. exercise energy expenditure) are reduced. METHODS: 19 overweight/obese, sedentary males (Age: 22.7±3.9 yrs, Body Mass Index: 31.4±2.6 kg/m(2), Waist Circumference: 106.5±6.6 cm) performed 9 sessions of interval training using a 1-min on, 1-min off protocol on a cycle ergometer over three weeks at either 70% (LO) or 100% (HI) peak work rate. RESULTS: Cytochrome oxidase I protein content, cytochrome oxidase IV protein co

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Negative / Null Result ReportOpen accessMedicine

Cardiovascular risk prediction in type 2 diabetes: a comparison of 22 risk scores in primary care settings

Katarzyna Dziopa, Folkert W. Asselbergs, Jasmine Gratton et al. · 2022 · Diabetologia

AIMS/HYPOTHESIS: We aimed to compare the performance of risk prediction scores for CVD (i.e., coronary heart disease and stroke), and a broader definition of CVD including atrial fibrillation and heart failure (CVD+), in individuals with type 2 diabetes. METHODS: Scores were identified through a literature review and were included irrespective of the type of predicted cardiovascular outcome or the inclusion of individuals with type 2 diabetes. Performance was assessed in a contemporary, representative sample of 168,871 UK-based individuals with type 2 diabetes (age ≥18 years without pre-existi

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Negative / Null Result ReportOpen accessMedicine

ITPKC Single Nucleotide Polymorphism Associated with the Kawasaki Disease in a Taiwanese Population

Ho‐Chang Kuo, Kuender D. Yang, Suh‐Hang Hank Juo et al. · 2011 · PLoS ONE

Kawasaki disease (KD) is characterized by systemic vasculitis with unknown etiology. Previous studies from Japan indicated that a gene polymorphism of ITPKC (rs28493229) is responsible for susceptibility to KD. We collected DNA samples from 1,531 Taiwanese subjects (341 KD patients and 1,190 controls) for genotyping ITPKC. In this study, no significant association was noted for the ITPKC polymorphism (rs28493229) between the controls and KD patients, although the CC genotype was overrepresented. We further combined our data with previously published case/control KD studies in the Taiwanese pop

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Negative / Null Result ReportOpen accessMedicine

Novel HER2-Directed Treatments in Advanced Gastric Carcinoma: AnotHER Paradigm Shift?

Angela Dalia Ricci, Alessandro Rizzo, Fabiola Lorena Rojas Llimpe et al. · 2021 · Cancers

Human epidermal growth factor receptor 2 (HER2) is overexpressed and/or amplified in approximately 15–20% of gastric adenocarcinoma (GC) patients. In 2010, the landmark ToGA trial established the combination of trastuzumab plus chemotherapy as the first-line standard of care for HER2-positive GC patients with advanced disease. However, subsequent studies on HER2 targeted therapies in this setting failed to meet their primary endpoints, and not all HER2-positive GC patients benefit from targeted approaches. More recently, novel HER2-directed treatments have been investigated, including trastuzu

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Negative / Null Result ReportMedicine

Effect of the treatment with myo-inositol plus folic acid plus melatonin in comparison with a treatment with myo-inositol plus folic acid on oocyte quality and pregnancy outcome in IVF cycles. A prospective, clinical trial.

P. Rizzo, Emanuela Raffone, Vincenzo Di Benedetto · 2010 · PubMed

OBJECTIVE: The aim of the study was to evaluate the efficacy of a treatment with myo-inositol plus folic acid plus melatonin compared with myo-inositol plus folic acid alone on oocyte quality in women underwent in vitro fertilization (IVF)…

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Negative / Null Result ReportOpen accessMedicine

The use of plasma donor-derived, cell-free DNA to monitor acute rejection after kidney transplantation

Els M. Gielis, Kristien J. Ledeganck, Amélie Dendooven et al. · 2019 · Nephrology Dialysis Transplantation

BACKGROUND: After transplantation, cell-free deoxyribonucleic acid (DNA) derived from the donor organ (ddcfDNA) can be detected in the recipient's circulation. We aimed to investigate the role of plasma ddcfDNA as biomarker for acute…

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Negative / Null Result ReportOpen accessMedicine

Association of fecal calprotectin concentrations with disease severity, response to treatment, and other biomarkers in dogs with chronic inflammatory enteropathies

Romy M. Heilmann, Nora Berghoff, Joanne Mansell et al. · 2018 · Journal of Veterinary Internal Medicine

BACKGROUND: Calprotectin is a marker of inflammation, but its clinical utility in dogs with chronic inflammatory enteropathies (CIE) is unknown. OBJECTIVE: Evaluation of fecal calprotectin in dogs with biopsy-confirmed CIE. ANIMALS: 127…

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Negative / Null Result ReportOpen accessMedicine

Use of the Health Belief Model for the Assessment of Public Knowledge and Household Preventive Practices in Karachi, Pakistan, a Dengue-Endemic City

Taranum Ruba Siddiqui, Saima Ghazal, Safia Bibi et al. · 2016 · PLoS neglected tropical diseases

BACKGROUND: Prevention is most effective in reducing dengue infection risk, especially in endemic countries like Pakistan. Evaluation of public awareness and health beliefs regarding dengue fever (DF) is important for devising disease control strategies. This study assessed dengue knowledge, health beliefs, and preventive practices against DF in different socioeconomic groups of Karachi, Pakistan. METHODOLOGY: In this community-based cross-sectional study, 6 randomly selected towns were visited, 2 persons (man and woman) per household were interviewed using a structured questionnaire, and hous

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Negative / Null Result ReportOpen accessMedicine

Cold Atmospheric Plasma Induces ATP-Dependent Endocytosis of Nanoparticles and Synergistic U373MG Cancer Cell Death

Zhonglei He, Kangze Liu, Eline Manaloto et al. · 2018 · Scientific Reports

Gold nanoparticles (AuNP) have potential as both diagnostic and therapeutic vehicles. However, selective targeting and uptake in cancer cells remains challenging. Cold atmospheric plasma (CAP) can be combined with AuNP to achieve synergistic anti-cancer cytotoxicity. To explore synergistic mechanisms, we demonstrate both rate of AuNP uptake and total amount accumulated in U373MG Glioblastoma multiforme (GBM) cells are significantly increased when exposed to 75 kV CAP generated by dielectric barrier discharge. No significant changes in the physical parameters of AuNP were caused by CAP but acti

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Negative / Null Result ReportOpen accessMedicine

The Contribution of Ebola Viral Load at Admission and Other Patient Characteristics to Mortality in a Médecins Sans Frontières Ebola Case Management Centre, Kailahun, Sierra Leone, June–October 2014

Gabriel Fitzpatrick, Florian Vogt, Osman Gbabai et al. · 2015 · The Journal of Infectious Diseases

This paper describes patient characteristics, including Ebola viral load, associated with mortality in a Médecins Sans Frontières Ebola case management centre (CMC).Out of 780 admissions between June and October 2014, 525 (67%) were…

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Negative / Null Result ReportMedicine

Effect of Dietary Protein Supplementation on Blood Pressure

Jiang He, Marion R. Wofford, Kristi Reynolds et al. · 2011 · Circulation

BACKGROUND: Observational studies have reported an inverse association between dietary protein intake and blood pressure (BP). We compared the effect of soy protein, milk protein, and carbohydrate supplementation on BP among healthy…

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Negative / Null Result ReportMedicine

Pemetrexed and platinum with or without pembrolizumab for tyrosine kinase inhibitor (TKI)-resistant, EGFR -mutant, metastatic nonsquamous NSCLC: Phase 3 KEYNOTE-789 study.

James Chih‐Hsin Yang, Dae Ho Lee, Jong Seok Lee et al. · 2023 · Journal of Clinical Oncology

LBA9000 Background: EGFR TKIs are standard 1L therapy for metastatic NSCLC with sensitizing EGFR mutations; however, most patients (pts) ultimately experience PD. We report the protocol-specified final analysis (FA) from the randomized,…

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Negative / Null Result ReportOpen accessMedicine

Predictors of diagnosis and survival in idiopathic pulmonary fibrosis and connective tissue disease-related usual interstitial pneumonia

Teng Moua, Ana Carro Martínez, Misbah Baqir et al. · 2014 · Respiratory Research

BACKGROUND: Although usual interstitial pneumonia (UIP) appears to portend better survival when associated with connective tissue disease (CTD-UIP), little is known about the presenting clinical, radiologic, and pathologic features that differentiate pathologically confirmed UIP with CTD from idiopathic pulmonary fibrosis (IPF). In patients with atypical radiologic and clinical features, what specific findings predict underlying IPF vs. CTD-UIP diagnosis and their respective long term survival? METHODS: A large retrospective cohort analysis was done of consecutive patients seen from 1995 throu

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Negative / Null Result ReportOpen accessMedicine

Mosunetuzumab monotherapy is active and tolerable in patients with relapsed/refractory diffuse large B-cell lymphoma

Nancy L. Bartlett, Sarit Assouline, Pratyush Giri et al. · 2023 · Blood Advances

As part of a phase 1 or 2 study, this single-arm expansion cohort established the efficacy and safety of mosunetuzumab monotherapy in patients with relapsed/refractory (R/R) diffuse large B-cell lymphoma (DLBCL) (received ≥2 previous lines…

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Negative / Null Result ReportOpen accessMedicine

Evaluating the authenticity of ChatGPT responses: a study on text-matching capabilities

Ahmed M. Elkhatat · 2023 · International Journal for Educational Integrity

Abstract Academic plagiarism is a pressing concern in educational institutions. With the emergence of artificial intelligence (AI) chatbots, like ChatGPT, potential risks related to cheating and plagiarism have increased. This study aims to investigate the authenticity capabilities of ChatGPT models 3.5 and 4 in generating novel, coherent, and accurate responses that evade detection by text-matching software. The repeatability and reproducibility of both models were analyzed, showing that the generation of responses remains consistent. However, a two-sample t-test revealed insufficient evidenc

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Negative / Null Result ReportOpen accessMedicine

Distribution and Inhibition of Liposomes on Staphylococcus aureus and Pseudomonas aeruginosa Biofilm

Dong Dong, Nicky Thomas, Benjamin Thierry et al. · 2015 · PLoS ONE

BACKGROUND: Staphylococcus aureus and Pseudomonas aeruginosa are major pathogens in chronic rhinosinusitis (CRS) and their biofilms have been associated with poorer postsurgical outcomes. This study investigated the distribution and anti-biofilm effect of cationic (+) and anionic (-) phospholipid liposomes with different sizes (unilamellar and multilamellar vesicle, ULV and MLV respectively) on S. aureus and P. aeruginosa biofilms. METHOD: Specific biofilm models for S. aureus ATCC 25923 and P. aeruginosa ATCC 15692 were established. Liposomal distribution was determined by observing SYTO9 sta

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Negative / Null Result ReportOpen accessMedicine

HIV and lower risk of multiple sclerosis: beginning to unravel a mystery using a record-linked database study

Julian Gold, Raph Goldacre, H Maruszak et al. · 2014 · Journal of Neurology Neurosurgery & Psychiatry

OBJECTIVES: Even though multiple sclerosis (MS) and HIV infection are well-documented conditions in clinical medicine, there is only a single case report of a patient with MS and HIV treated with HIV antiretroviral therapies. In this…

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Negative / Null Result ReportOpen accessMedicine

Approval of Cancer Drugs With Uncertain Therapeutic Value: A Comparison of Regulatory Decisions in Europe and the United States

Maximilian Salcher‐Konrad, Huseyin Naci, Courtney Davis · 2020 · Milbank Quarterly

Policy Points Regulatory agencies may have limited evidence on the clinical benefits and harms of new drugs when deciding whether new therapeutic agents are allowed to enter the market and under which conditions, including whether approval is granted under special regulatory pathways and obligations to address knowledge gaps through postmarketing studies are imposed. In a matched comparison of marketing applications for cancer drugs of uncertain therapeutic value reviewed by both the US Food and Drug Administration (FDA) and the European Medicines Agency (EMA), we found frequent discordance be

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Negative / Null Result ReportMedicine

A Phase 3 Randomized Clinical Trial of Chemotherapy With or Without Algenpantucel-L (HyperAcute-Pancreas) Immunotherapy in Subjects With Borderline Resectable or Locally Advanced Unresectable Pancreatic Cancer

Daniel Brock Hewitt, Nicholas Nissen, Hassan Hatoum et al. · 2020 · Annals of Surgery

OBJECTIVES: To compare the efficacy and safety of algenpantucel-L [HyperAcute-Pancreas algenpantucel-L (HAPa); IND# 12311] immunotherapy combined with standard of care (SOC) chemotherapy and chemoradiation to SOC chemotherapy and…

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Negative / Null Result ReportOpen accessMedicine

Efficacy and Safety of Fluticasone Furoate/Vilanterol Compared With Fluticasone Propionate/Salmeterol Combination in Adult and Adolescent Patients With Persistent Asthma

Ashley Woodcock, Eugene R. Bleecker, Jan Lötvall et al. · 2013 · CHEST Journal

BACKGROUND: The combination of fluticasone furoate (FF), a novel inhaled corticosteroid (ICS), and vilanterol (VI), a long-acting β2 agonist, is under development as a once-daily treatment of asthma and COPD. The aim of this study was to…

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Negative / Null Result ReportOpen accessMedicine

Early dyspnoea relief in acute heart failure: prevalence, association with mortality, and effect of rolofylline in the PROTECT Study

Marco Metra, Cathal O’Connor, Beth A. Davison et al. · 2011 · European Heart Journal

AIMS: Dyspnoea and pulmonary and/or peripheral congestion are the most frequent manifestations of acute heart failure (AHF) and are important targets for therapy. We have assessed changes in dyspnoea, their relationship with mortality, and…

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