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11,406 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

Design of a multicenter randomized clinical trial for treatment of Alcohol-Associated Hepatitis

Wanzhu Tu, Samer Gawrieh, Srinivasan Dasarathy et al. · 2023 · Contemporary Clinical Trials Communications

Background: Mortality is high for severe alcohol-associated hepatitis (AH). Corticosteroids are the standard of care for patients without contraindications. Recent data showed that interleukin-1β receptor antagonist anakinra attenuated…

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Negative / Null Result ReportOpen accessMedicine

Neural protein gamma-synuclein interacting with androgen receptor promotes human prostate cancer progression

Junyi Chen, Jiao Li, Chuanliang Xu et al. · 2012 · BMC Cancer

BACKGROUND: Gamma-synuclein (SNCG) has previously been demonstrated to be significantly correlated with metastatic malignancies; however, in-depth investigation of SNCG in prostate cancer is still lacking. In the present study, we evaluated the role of SNCG in prostate cancer progression and explored the underlying mechanisms. METHODS: First, alteration of SNCG expression in LNCaP cell line to test the ability of SNCG on cellular properties in vitro and vivo whenever exposing with androgen or not. Subsequently, the Dual-luciferase reporter assays were performed to evaluate whether the role of

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Negative / Null Result ReportOpen accessMedicine

Signal transducer and activator of transcription 1 (STAT‐1) plays a critical role in control of Trypanosoma cruzi infection

Manjusha Kulkarni, Sanjay Varikuti, César Terrazas et al. · 2014 · Immunology

The control of Trypanosoma cruzi infection is related to interferon-γ (IFN-γ) activation leading to intracellular clearance of parasites. The transcription factor signal transducer and activator of transcription 1 (STAT-1) is a key…

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Negative / Null Result ReportOpen accessMedicine

Cystatin C– and Creatinine-Based Estimates of Renal Function and Their Value for Risk Prediction in Patients with Acute Coronary Syndrome: Results from the PLATelet Inhibition and Patient Outcomes (PLATO) Study

Axel Åkerblom, Lars Wallentin, Anders Larsson et al. · 2013 · Clinical Chemistry

BACKGROUND: The estimated glomerular filtration rate (eGFR) independently predicts cardiovascular death or myocardial infarction (MI) and can be estimated by creatinine and cystatin C concentrations. We evaluated 2 different cystatin C…

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Negative / Null Result ReportOpen accessMedicine

Treatment of 4T1 Metastatic Breast Cancer with Combined Hypofractionated Irradiation and Autologous T-Cell Infusion

Alexander Filatenkov, Jeanette Baker, Antonia Müller et al. · 2014 · Radiation Research

The goal of this study was to determine whether a combination of local tumor irradiation and autologous T-cell transplantation can effectively treat metastatic 4T1 breast cancer in mice. BALB/c mice were injected subcutaneously with…

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Negative / Null Result ReportOpen accessMedicine

Estimated GFR and Mortality in Older Men: Are All eGFR Formulae Equal?

Muna Canales, Terri Blackwell, Areef Ishani et al. · 2016 · American Journal of Nephrology

<b><i>Background:</i></b> Recently, the first estimated glomerular filtration rate (eGFR) formula specifically developed for community-dwelling older adults, the Berlin Initiative Study Equation 2 (BIS2), was…

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Negative / Null Result ReportOpen accessMedicine

Predicting vaginal birth after previous cesarean: Using machine‐learning models and a population‐based cohort in Sweden

Charlotte Lindblad Wollmann, Kyle D. Hart, Can Liu et al. · 2020 · Acta Obstetricia Et Gynecologica Scandinavica

INTRODUCTION: Predicting a woman's probability of vaginal birth after cesarean could facilitate the antenatal decision-making process. Having a previous vaginal birth strongly predicts vaginal birth after cesarean. Delivery outcome in…

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Negative / Null Result ReportOpen accessMedicine

The COMPARE head-to-head, randomized controlled trial of SEL-212 (pegadricase plus rapamycin-containing nanoparticle, ImmTOR™) versus pegloticase for refractory gout

Herbert S. B. Baraf, Puja Khanna, Alan Kivitz et al. · 2023 · Lara D. Veeken

OBJECTIVES: Serum urate (SU) lowering with PEGylated uricases in gout can reduce flares and tophi. However, treatment-emergent anti-drug antibodies adversely affect safety and efficacy and the currently approved PEGylated uricase…

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Negative / Null Result ReportOpen accessMedicine

Performance of arthroscopic irrigation systems assessed with automatic blood detection

Gabriëlle J. M. Tuijthof, M. M. de Vaal, I. N. Sierevelt et al. · 2011 · Knee Surgery Sports Traumatology Arthroscopy

PURPOSE: During arthroscopies, bleeding episodes occur as a result of tissue damage. Irrigation systems assist in minimizing these disturbances. The performance of three arthroscopic irrigation systems in clearing bleeding episodes was…

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Negative / Null Result ReportOpen accessMedicine

Significant Association of Serum Adiponectin and Creatine Kinase-MB Levels in ST-Segment Elevation Myocardial Infarction

Tomoaki Natsukawa, Norikazu Maeda, Shiro Fukuda et al. · 2017 · Journal of Atherosclerosis and Thrombosis

AIMS: Adiponectin, an adipocyte-specific secretory protein, abundantly exists in the blood stream while its concentration paradoxically decreases in obesity. Hypoadiponectinemia is one of risks of cardiovascular diseases. However, impact…

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Negative / Null Result ReportOpen accessMedicine

Genome‐wide association study identifies loci associated with liability to alcohol and drug dependence that is associated with variability in reward‐related ventral striatum activity in African‐ and European‐Americans

Leah Wetherill, Dongbing Lai, Emma C. Johnson et al. · 2019 · Genes Brain & Behavior

Abstract Genetic influences on alcohol and drug dependence partially overlap, however, specific loci underlying this overlap remain unclear. We conducted a genome‐wide association study (GWAS) of a phenotype representing alcohol or illicit…

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Negative / Null Result ReportOpen accessMedicine

The American Association for the Surgery of Trauma renal injury grading scale: Implications of the 2018 revisions for injury reclassification and predicting bleeding interventions

Sorena Keihani, Douglas Rogers, Bryn Putbrese et al. · 2019 · The Journal of Trauma: Injury, Infection, and Critical Care

BACKGROUND: In 2018, the American Association for the Surgery of Trauma (AAST) published revisions to the renal injury grading system to reflect the increased reliance on computed tomography scans and non-operative management of high-grade…

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Negative / Null Result ReportMedicine

Clinically Significant Differences in Ki-67 Proliferation Index Between Primary and Metastases in Resected Pancreatic Neuroendocrine Tumors

Sebastian Richards-Taylor, Charles Tilley, Eleanor Jaynes et al. · 2017 · Pancreas

OBJECTIVE: Pancreatic neuroendocrine tumors (NETs) (pNETs) have a varied prognosis according to their grade. The European Neuroendocrine Tumor Society grading system uses assessment of the proliferation index via Ki-67 immunohistochemistry…

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Negative / Null Result ReportOpen accessMedicine

DOES HIPEC IMPROVE OUTCOMES IN GASTRIC CANCER PATIENTS TREATED WITH PERIOPERATIVE CHEMOTHERAPY AND RADICAL SURGERY? A PROPENSITY-SCORE MATCHED ANALYSIS

Thiago Pereira Diniz, Wilson Luiz da Costa, Victor Hugo Fonseca de Jesus et al. · 2019 · Journal of Surgical Oncology

BACKGROUND: Hyperthermic intraperitoneal chemotherapy (HIPEC) has been associated with improved survival when compared with surgery alone for non-metastatic gastric cancer patients in randomized trials and meta-analyses. However, little evidence is available regarding the use of HIPEC in nonmetastatic patients who are treated with perioperative chemotherapy and radical surgery. The aim of this study was to investigate the putative survival benefit of HIPEC in the subgroup of gastric cancer patients treated with perioperative chemotherapy and surgery. PATIENTS AND METHODS: This was a retrospect

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Negative / Null Result ReportOpen accessMedicine

Guapiaçu virus, a new insect-specific flavivirus isolated from two species of Aedes mosquitoes from Brazil

Geovani de Oliveira Ribeiro, Antônio Charlys da Costa, Danielle Elise Gill et al. · 2021 · Scientific Reports

Classical insect-flaviviruses (cISFVs) and dual host-related insect-specific flavivirus (dISFV) are within the major group of insect-specific flavivirus. Remarkably dISFV are evolutionarily related to some of the pathogenic flavivirus, such as Zika and dengue viruses. The Evolutionary relatedness of dISFV to flavivirus allowed us to investigate the evolutionary principle of host adaptation. Additionally, dISFV can be used for the development of flavivirus vaccines and to explore underlying principles of mammalian pathogenicity. Here we describe the genetic characterization of a novel putative

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Negative / Null Result ReportOpen accessMedicine

Use of Antivirals in SARS-CoV-2 Infection. Critical Review of the Role of Remdesivir

Santiago Moreno, Bernardino Alcázar-Navarrete, Carlos Dueñas et al. · 2022 · Drug Design Development and Therapy

The aim of this report is to review the literature and shed light on the uncertainties surrounding the use of antiviral agents in general and remdesivir in COVID-19 patients. This review evaluated a battery of antiviral compounds and their…

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Negative / Null Result ReportOpen accessMedicine

Effects of early corticosteroid use in patients with severe coronavirus disease 2019

Jong Hoon Hyun, Moo Hyun Kim, Yujin Sohn et al. · 2021 · BMC Infectious Diseases

Abstract Background Coronavirus disease 2019 (COVID-19) is associated with acute respiratory distress syndrome, and corticosteroids have been considered as possible therapeutic agents for this disease. However, there is limited literature on the appropriate timing of corticosteroid administration to obtain the best possible patient outcomes. Methods This was a retrospective cohort study including patients with severe COVID-19 who received corticosteroid treatment from March 2 to June 30, 2020 in seven tertiary hospitals in South Korea. We analyzed the patient demographics, characteristics, and

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Negative / Null Result ReportMedicine

Intensive Care Unit Educators: A Multicenter Evaluation of Behaviors Residents Value in Attending Physicians

Lekshmi Santhosh, Snigdha Jain, Anna K. Brady et al. · 2017 · Annals of the American Thoracic Society

RATIONALE: It is important for attending physicians to know which behaviors influence learner perceptions. To date, two studies focusing on general medicine attending physicians have been published addressing internal medicine residents'…

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Negative / Null Result ReportOpen accessMedicine

Dose-escalated intensity-modulated radiotherapy and irradiation of subventricular zones in relation to tumor control outcomes of patients with glioblastoma multiforme

Melvin L.K. Chua, Grace Kusumawidjaja, Patricia Gan et al. · 2016 · OncoTargets and Therapy

BACKGROUND: Glioblastoma multiforme (GBM) is the most aggressive primary brain tumor with high relapse rate. In this study, we aimed to determine if dose-escalated (DE) radiotherapy improved tumor control and survival in GBM patients.…

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Negative / Null Result ReportOpen accessMedicine

Age of red blood cells and outcome in acute kidney injury

Kirsi‐Maija Kaukonen, Suvi T. Vaara, Ville Pettilä et al. · 2013 · Critical Care

INTRODUCTION: Transfusion of red blood cells (RBCs) and, in particular, older RBCs has been associated with increased short-term mortality in critically ill patients. We evaluated the association between age of transfused RBCs and acute kidney injury (AKI), hospital, and 90-day mortality in critically ill patients. METHODS: We conducted a prospective, observational, predefined sub-study within the FINNish Acute Kidney Injury (FINNAKI) study. This study included all elective ICU admissions with expected ICU stay of more than 24 hours and all emergency admissions from September to November 2011.

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Negative / Null Result ReportOpen accessMedicine

Enhanced cardiac repair by telomerase reverse transcriptase over-expression in human cardiac mesenchymal stromal cells

Thi Yen Loan Le, Hilda A. Pickett, Andrian Yang et al. · 2019 · Scientific Reports

We have previously reported a subpopulation of mesenchymal stromal cells (MSCs) within the platelet-derived growth factor receptor-alpha (PDGFRα)/CD90 co-expressing cardiac interstitial and adventitial cell fraction. Here we further characterise PDGFRα/CD90-expressing cardiac MSCs (PDGFRα + cMSCs) and use human telomerase reverse transcriptase (hTERT) over-expression to increase cMSCs ability to repair the heart after induced myocardial infarction. hTERT over-expression in PDGFRα + cardiac MSCs (hTERT + PDGFRα + cMSCs) modulates cell differentiation, proliferation, survival and angiogenesis re

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Negative / Null Result ReportOpen accessMedicine

Pharmacologic thromboprophylaxis in adult patients undergoing neurosurgical interventions for preventing venous thromboembolism

Juan José Yepes-Núñez, Anita Rajasekhar, Maryam Rahman et al. · 2020 · Blood Advances

The impact of pharmacologic prophylaxis for venous thromboembolism in patients undergoing neurosurgical intervention remains uncertain. We reviewed the efficacy and safety of pharmacologic compared with nonpharmacologic thromboprophylaxis…

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Negative / Null Result ReportOpen accessMedicine

Variants Associated with the Ankle Brachial Index Differ by Hispanic/Latino Ethnic Group: a genome-wide association study in the Hispanic Community Health Study/Study of Latinos

Tamar Sofer, Leslie S. Emery, Deepti Jain et al. · 2019 · Scientific Reports

Abstract Lower extremity peripheral artery disease (PAD) burden differs by race/ethnicity. Although familial aggregation and heritability studies suggest a genetic basis, little is known about the genetic susceptibility to PAD, especially in non-European descent populations. Genome-wide association studies (GWAS) of the ankle brachial index (ABI) and PAD (defined as an ABI < 0.90) have not been conducted in Hispanics/Latinos. We performed a GWAS of PAD and the ABI in 7,589 participants aged >45 years from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). We also performed

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Negative / Null Result ReportOpen accessMedicine

The Error of Estimated GFR in Type 2 Diabetes Mellitus

Sergio Luis‐Lima, Tomás H. Higuera Linares, Laura Henríquez-Gómez et al. · 2019 · Journal of Clinical Medicine

Type 2 diabetes mellitus represents 30-50% of the cases of end stage renal disease worldwide. Thus, a correct evaluation of renal function in patients with diabetes is crucial to prevent or ameliorate diabetes-associated kidney disease. The reliability of formulas to estimate renal function is still unclear, in particular, those new equations based on cystatin-C or the combination of creatinine and cystatin-C. We aimed to assess the error of the available formulas to estimate glomerular filtration rate in diabetic patients. We evaluated the error of creatinine and/or cystatin-C based formulas

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Negative / Null Result ReportOpen accessMedicine

Little evidence for an effect of the rubber hand illusion on basic movement

Arran T. Reader, Victoria S. Trifonova, H. Henrik Ehrsson · 2021 · European Journal of Neuroscience

Body ownership refers to the distinct sensation that our observed body belongs to us, which is believed to stem from multisensory integration. This is commonly shown through the rubber hand illusion (RHI), which induces a sense of ownership over a false limb. Whilst the RHI may interfere with object-directed action and alter motor cortical activity, it is not yet clear whether a sense of ownership over an artificial hand has functional consequences for movement production per se. As such, we performed two motion-tracking experiments (n = 117) to examine the effects of the RHI on the reaction t

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