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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

20253 results in Negative / Null Result Report · page 468 of 676

Negative / Null Result ReportOpen accessMedicine (General)

Ghrelin Alleviates MDMA-Induced Disturbance of Serum Glucose and Lipids Levels in the Rat

Ravieh Golchoobian, Fatemeh Nabavizadeh, Mehrdad Roghani et al. · 2018 · Acta Medica Iranica

Hepatotoxicity is one of the clinically adverse effects of ecstasy (3, 4-methylenedioxymethamphetamine; MDMA) consumption. The detoxification tissue, liver, plays a central role in maintaining circulating levels of glucose and lipid. Hypoglycemia and hypotriglyceridemia have been reported due to ecstasy abuse. Ghrelin is a 28-amino-acid peptide secreted predominantly from the stomach. It has been demonstrated that ghrelin has hepatoprotective effects and is able to increase blood glucose concentration. In the current study, we explored the effect of hepatotoxic dose of MDMA and therapeutic use

Negative / Null Result ReportOpen accessPublic aspects of medicine

Prenatal multiple micronutrient supplementation impact on biochemical indicators during pregnancy and postpartum Efecto de la suplementación prenatal con micronutrimentos múltiples en indicadores bioquímicos durante el embarazo y el posparto

Armando García-Guerra, Lynnette M Neufeld, Sonia Hernández-Cordero et al. · 2009 · Salud Pública de México

OBJECTIVE: The objective of this analysis was to test the impact of daily supplementation with multiple micronutrients (MM) during pregnancy on Zn, vitamin A and folate status compared to iron only (Fe). MATERIAL AND METHODS: The study was carried out during 1997-2000 in a semi-urban community in Morelos state, Mexico. Women were randomly assigned to MM (n= 249) or Fe (n= 258) and received supplements daily (6 d/wk) under supervision by the field team from recruitment (approximately 9 weeks pregnancy) until delivery. Blood samples were collected on a sub-sample of women at baseline, 32 weeks p

Negative / Null Result ReportOpen accessMedicine

Preoperative and Postoperative Pulmonary Function in Elderly Patients with Thoracolumbar Kyphoscoliosis

Tatsuya Yasuda, Tomohiko Hasegawa, Yu Yamato et al. · 2015 · Asian Spine Journal

Study DesignCase series.PurposeThe objective of this study was to investigate the change in pulmonary function in adult patients with a spinal deformity who underwent spinal corrective surgery.Overview of LiteratureDegenerative lumbar and/or thoraco-lumbar deformities are is often prominent in adult spinal deformity cases, whereas a thoracic deformity involving the chest wall is inconspicuous. A lumbar spine deformity could affect the pulmonary function; however, few reports have investigated pulmonary function in adult patients with a spinal deformity.MethodsThis study included 14 adult patie

View details →DOI: 10.4184/asj.2015.9.6.923
Negative / Null Result ReportOpen accessDiseases of the circulatory (Cardiovascular) system

Evaluation of early left-sided cardiac reverse remodeling under combined therapy of sacubitril-valsartan and spironolactone compared with angiotensin-converting enzyme inhibitors and spironolactone

Wioletta Sacharczuk, Rafał Dankowski, Stefan Ożegowski et al. · 2023 · Frontiers in Cardiovascular Medicine

We aimed to compare therapies of sacubitril/valsartan + spironolactone (S/V + S) with angiotensin-converting enzyme inhibitors + spironolactone (ACEI + S) on the left-sided cardiac reverse remodeling (L-CRR). The second objective was to analyze the usefulness of GLS and LVEF in response to therapy.Methods78 patients (mean age 63.4 years, 20 females) with symptomatic heart failure with reduced ejection fraction were randomized to groups of equal numbers, i.e., 39 patients, and started on therapy of S/V + S or ACEI + S. Second evaluations were made after 6–8 weeks of therapy.ResultsGLS changed f

View details →DOI: 10.3389/fcvm.2023.1103688
Negative / Null Result ReportOpen accessMedicine (General)

Long-term outcomes of standard versus extended lymphadenectomy in pancreatoduodenectomy for pancreatic ductal adenocarcinoma: A Chinese multi-center prospective randomized controlled trial

Weishen WANG, Wenhui LOU, Zhiwei XU et al. · 2023 · Journal of Advanced Research

Introduction: The value of extended lymphadenectomy in pancreatoduodenectomy (PD) has been discussed by five randomized controlled studies. However, the limitations in the studies made their conclusions not sufficiently reliable. Objectives: This multi-center randomized controlled study was designed to clarify the efficacy of extended lymphadenectomy in PD for pancreatic ductal adenocarcinoma (PDAC). Methods: From December 2016 to October 2018, 170 consecutive patients undergoing PD were enrolled and randomized to standard or extended lymphadenectomy for the treatment of PDAC from three high-v

View details →DOI: 10.1016/j.jare.2022.09.011
Negative / Null Result ReportOpen accessSpecial aspects of education

The effect of nurse empowerment educational program on patient safety culture: a randomized controlled trial

Maryam Amiri, Zahra Khademian, Reza Nikandish · 2018 · BMC Medical Education

Abstract Background The complexity of patients’ condition and treatment processes in intensive care units (ICUs) predisposes patients to more hazardous events. Effective patient safety culture is related to lowering the rate of patients’ complications and fewer adverse events. The present study aimed to determine the effect of empowering nurses and supervisors through an educational program on patient safety culture in adult ICUs. Methods A randomized controlled trial was conducted during April–September 2015 in 6 adult ICUs at Namazi Hospital, Shiraz, Iran. A total of 60 nurses and 20 supervi

View details →DOI: 10.1186/s12909-018-1255-6
Negative / Null Result ReportOpen accessDiseases of the endocrine glands. Clinical endocrinology

Effects of short‐term tofogliflozin treatment on the insulin secretory capacity of people with type 2 diabetes: A randomized controlled trial, the TOP‐ELM study

Maiko Miyamoto, Aika Miya, Akinobu Nakamura et al. · 2026 · Journal of Diabetes Investigation

ABSTRACT Aims/Introduction We aimed to explore the short‐term effects of tofogliflozin on the insulin secretory capacity of people with type 2 diabetes. Materials and Methods We performed a multicenter, prospective, randomized, active‐controlled, open‐label, parallel‐group comparison study of people with type 2 diabetes aged 20–89 years, with hemoglobin A1c (HbA1c) 6.5%–9.0%, not previously treated with antihyperglycemic agents. The participants were randomly assigned to a group that received 20 mg tofogliflozin per day or a group that received 500 mg metformin per day for 4 weeks. Fasting blo

View details →DOI: 10.1111/jdi.70245
Negative / Null Result ReportMedicine

Ultrasound-guided transversus abdominis plane block versus ilioinguinal-iliohypogastric nerve block for postoperative analgesia after open total abdominal hysterectomy: a randomised comparative trial.

Reda, Ollaek, Mostafa et al. · 2026 · Anaesthesia reports

Open total abdominal hysterectomy is associated with substantial postoperative pain. We compared ultrasound-guided transversus abdominis plane block with ilioinguinal-iliohypogastric nerve block for postoperative analgesia. We conducted a…

View details →DOI: 10.1002/anr3.70074
Negative / Null Result ReportOpen accessMedicine

Intestinal ultrasonography and fecal calprotectin for monitoring inflammation of ileal Crohn’s disease: two complementary tests

José María Paredes, Tomás Ripollés, Ángela Algarra et al. · 2022 · Intestinal Research

Background/Aims Tight control of inflammation and adjustment of treatment if activity persists is the current strategy for the management of Crohn’s disease (CD). The usefulness of fecal calprotectin (FC) in isolated involvement of the small intestine in CD is controversial. To assess the usefulness of FC to determine the inflammatory activity detected by intestinal ultrasonography (IUS) in ileal CD. Methods Patients with exclusively ileal involvement CD who underwent IUS and an FC were prospectively included. Simple ultrasound index was used to determine inflammatory activity. The usual stati

View details →DOI: 10.5217/ir.2021.00126
Negative / Null Result ReportOpen accessPathology

Angiotensin II type 2 receptor agonist Compound 21 attenuates pulmonary inflammation in a model of acute lung injury

Menk M, Graw JA, von Haefen C et al. · 2018 · Journal of Inflammation Research

Mario Menk, Jan Adriaan Graw, Clarissa von Haefen, Hendrik Steinkraus, Burkhard Lachmann, Claudia D Spies, David Schwaiberger Department of Anesthesiology and Operative Intensive Care Medicine, Charité – University Medicine Berlin, FreieUniversität Berlin, Humboldt-Universitätzu Berlin, and Berlin Institute of Health, Germany Purpose: Although the role of the angiotensin II type 2 (AT2) receptor in acute lung injury is not yet completely understood, a protective role of this receptor subtype has been suggested. We hypothesized that, in a rodent model of acute lung injury

Negative / Null Result ReportOpen accessDiseases of the endocrine glands. Clinical endocrinology

Predictive value of Systematic Coronary Risk Evaluation 2‐Diabetes risk model and arterial stiffness for cardiovascular events in the Asian population with type 2 diabetes mellitus

Pannipa Suwannasom, Tasalak Thonghong, Krit Leemasawat et al. · 2024 · Journal of Diabetes Investigation

Abstract Aims/Introduction Individuals with diabetes are at high risk of developing cardiovascular events. The present study investigated the predictive value of the cardio‐ankle vascular index (CAVI) when added to the Systematic Coronary Risk Evaluation 2‐Diabetes (SCORE2‐Diabetes) risk algorithm to predict cardiovascular events in the Asian population. Materials and Methods The SCORE2‐Diabetes risk was assessed in 1,502 patients with diabetes, aged 40–69 years. Then, we further stratified each 10‐year risk category with a CAVI value of 9.0. The primary outcomes (composite of all causes of de

View details →DOI: 10.1111/jdi.14231
Negative / Null Result ReportOpen accessMedicine

Effects of adjunctive dobutamine on outcomes among patients with septic shock: a propensity score matching analysis

Sung Yoon Lim, Kyu Jin Lee, Yeonhoon Jang et al. · 2025 · The Korean Journal of Internal Medicine

Background/Aims Despite some evidence supporting its utility, the role of adjunctive dobutamine in the management of septic shock remains unclear. Methods The nationwide prospective sepsis cohort of the Korean Sepsis Alliance was analyzed. Adult patients with septic shock receiving norepinephrine were enrolled over a 29-month period. Patients given a dobutamine infusion within 3 days of intensive care unit (ICU) admission were compared with patients who received no infusion. To balance baseline characteristics, propensity score matching (PSM) was used. Results Of 11,981 patients with sepsis, 1

View details →DOI: 10.3904/kjim.2024.432
Negative / Null Result ReportOpen accessPediatrics

Polypharmacy and pharmacogenomics in high-acuity behavioral health care for autism spectrum disorder: a retrospective study

Sheldon R. Garrison, Sophie A. Schweinert, Matthew W. Boyer et al. · 2025 · Child and Adolescent Psychiatry and Mental Health

Abstract Background This study evaluated pharmacogenomic (PGx) testing in children and adolescents with autism spectrum disorder (ASD). ASD frequently presents with co-occurring depression and anxiety. This complex phenotype often results in psychotropic medication polypharmacy. Incorporating PGx testing into the medical work-up may reduce polypharmacy and improve quality of life with symptom reduction. Methods A retrospective electronic health record (EHR) review between January 2017 and May 2023. Individuals either received PGx testing or treatment as usual (TAU). The co-primary outcomes wer

View details →DOI: 10.1186/s13034-025-00915-3
Negative / Null Result ReportOpen accessMedicine

Multivariate Analysis of the Determinants of the End-Product Quality of Manure-Based Composts and Vermicomposts Using Bayesian Network Modelling.

Julie Faverial, Denis Cornet, Jacky Paul et al. · 2016 · PLoS ONE

Previous studies indicated that the quality of tropical composts is poorer than that of composts produced in temperate regions. The aim of this study was to test the type of manure, the use of co-composting with green waste, and the stabilization method for their ability to improve compost quality in the tropics. We produced 68 composts and vermicomposts that were analysed for their C, lignin and NPK contents throughout the composting process. Bayesian networks were used to assess the mechanisms controlling compost quality. The concentration effect, for C and lignin, and the initial blend qual

View details →DOI: 10.1371/journal.pone.0157884
Negative / Null Result ReportOpen accessMedicine

Reinfection as a central constraint on tuberculosis vaccine development.

Cardona PJ · 2026 · Frontiers in immunology

Tuberculosis (TB) vaccine development is hindered by the absence of validated correlates of protection, the low proportion of infected individuals who progress to disease, and the pervasive impact of reinfection in endemic settings.…

View details →DOI: 10.3389/fimmu.2026.1807344
Negative / Null Result ReportOpen accessOrthopedic surgery

In vivo cartilage tissue engineering

B. Gurer, S. Cabuk, O. Karakus et al. · 2018 · Journal of Orthopaedic Surgery and Research

Abstract Background Biologic treatment options for cartilage injuries require chondrocyte expansion using cell culture. Clinical application is accomplished in two surgical sessions and is expensive. If isolation of chondrocytes and stimulus for proliferation and extracellular matrix synthesis can be achieved in vivo, the treatment can be performed in one session and the cost can be reduced. Methods A 2.5-cm diameter full-thickness chondral defect was created in the knees of five groups of sheep. In one group, some of the chondral tissues obtained from the creation of the defect were diced int

View details →DOI: 10.1186/s13018-018-0823-0
Negative / Null Result ReportOpen accessMedicine

Post-thoracotomy paraplegia after oxidized cellulose spinal compression

Da Jun Than, Vinodh Vayara Perumall, Syamim Johan et al. · 2023 · Einstein (São Paulo)

ABSTRACT Post-thoracotomy paraplegia after non-aortic surgery is an extremely uncommon complication. A 56-year-old woman presented with a 1-year history of progressive shortness of breath. Computed tomography revealed a locally advanced posterior mediastinal mass involving the ribs and the left neural foramina. Tumor excision with a left pneumonectomy was performed. Post-resection, bleeding was noted in the vicinity of the T4-T5 vertebral body, and the bleeding point was packed with oxidized cellulose gauze (Surgicel®). Postoperatively, the patient complained of bilateral leg numbness extendin

View details →DOI: 10.31744/einstein_journal/2023rc0078
Negative / Null Result ReportOpen accessPublic aspects of medicine

Wastewater as an early indicator for short-term forecasting COVID-19 hospitalization in Germany

Jonas Radermacher, Steffen Thiel, Aimo Kannt et al. · 2025 · BMC Public Health

Abstract Background The COVID-19 pandemic has profoundly affected daily life and posed significant challenges for politics, the economy, and the education system. To better prepare for such situations and implement effective measures, it is crucial to accurately assess, monitor, and forecast the progression of a pandemic. This study examines the potential of integrating wastewater surveillance data to enhance an autoregressive COVID-19 forecasting model for Germany and its federal states. Methods First, we explore the cross-correlations between SARS-CoV-2 viral RNA load measured in wastewater

View details →DOI: 10.1186/s12889-025-24149-2
Negative / Null Result ReportOpen accessMedicine

Social-pair judgment bias testing in slow-growing broiler chickens raised in low- or high-complexity environments

M. I. Lourenço-Silva, A. Ulans, A. M. Campbell et al. · 2023 · Scientific Reports

Abstract Impacts of environmental complexity on affective states in slow-growing broiler chickens (Gallus gallus domesticus) are unknown. Chickens’ performance in judgment bias tests (JBT) can be limited as they are tested individually, causing fear and anxiety. The objectives were to apply a social-pair JBT to assess the effect of environmental complexity on slow-growing broiler chickens` affective states, and assess the impact of fearfulness, anxiety, and chronic stress on JBT performance. Six-hundred Hubbard Redbro broilers were housed in six low-complexity (similar to commercial) or six hi

View details →DOI: 10.1038/s41598-023-36275-1
Negative / Null Result ReportOpen accessMedicine (General)

Gender Differences in the Association Between Serum Uric Acid and Arteriosclerotic Cardiovascular Risk Among Chinese Type 2 Diabetes Mellitus Patients

Yang H, Gao J, Li S et al. · 2021 · International Journal of General Medicine

Hua Yang,1,* Jian Gao,2,* Shuyu Li,1 Huiling Xia,1 Zhangyan Chen,1 Shanzhu Zhu,1 Zhigang Pan1 1Department of General Practice, Zhongshan Hospital of Fudan University, Shanghai, 200030, People’s Republic of China; 2Department of Nutrition, Zhongshan Hospital of Fudan University, Center of Clinical Epidemiology and Evidence-Based Medicine, Fudan University, Shanghai, 200030, People’s Republic of China*These authors contributed equally to this workCorrespondence: Shanzhu Zhu; Zhigang PanDepartment of General Practice, Zhongshan Hospital of Fudan University, No. 180, Road Fenglin, Shan

Negative / Null Result ReportOpen accessPediatrics

Nonlinear association between neutrophil-to-lymphocyte ratio and asthma in children and adolescents in the United States: a cross-sectional study

Chuhan Cheng, Liyan Zhang · 2025 · Clinical and Experimental Pediatrics

Background The neutrophil-to-lymphocyte ratio (NLR) is a marker of systemic inflammation associated with various diseases including respiratory conditions. However, the relationship between NLR and asthma in the pediatric population remains underexplored. Purpose This study aimed to explore the association between NLR and asthma in children and adolescents and assess its potential role as a predictive biomarker for pediatric asthma. Methods We retrospectively analyzed the medical records of 12,974 children and adolescents from the National Health and Nutrition Examination Survey in 2011–2020.

View details →DOI: 10.3345/cep.2024.01844
Negative / Null Result ReportOpen accessMedicine

Relation between vitamin D serum levels with migraine

Mottaghi T, Askari Gh, Khorvash F et al. · 2015 · مجله دانشگاه علوم پزشکی گرگان

Background and Objective: Migraine is common worldwide. In recent years, vitamin D deficiency has been shown as a global health issue. This study was done to determine the relationship between serum levels of vitamin D with migraine. Methods: This descriptive - analytical study was carried out on 76 patients (21 males, 55 females) with migraine aged 10-61 years olds. Serum vitamin D level of each patient was measured. Adjustments were done for age, sex, waist circumference, body mass index (BMI), number of chronic diseases, and education level. The multiple linear regressions were done to dete

Negative / Null Result ReportOpen accessDermatology

Can Foot Dermatophyte Infections Signal Future Diabetes Risk? Findings from a Register-based Study

Anne Sofie Frølunde, Jan Brink Valentin, Lise Kristensen et al. · 2026 · Acta Dermato-Venereologica

Dermatophyte infections are common in general practice and occur more often in individuals with type 2 diabetes (T2D), but whether they signal undiagnosed T2D remains unclear. We conducted a register-based cohort study including positive PCR tests for dermatophyte infection from the feet or nails, matched 1:3 to individuals from the same geographic area in Denmark. Those with known diabetes, type 1 diabetes or aged under 20 were excluded. Incidence rates (IRs) and incidence rate ratios (IRRs) for new-onset T2D were estimated using Poisson regression. The final cohort comprised 78,140 individua

View details →DOI: 10.2340/actadv.v106.adv-2025-0125
Negative / Null Result ReportOpen accessMicrobiology

Salivary microbiome in patients with benign prostatic hyperplasia: altered composition and its association with prostate-specific antigen

Bin Zhang, Hao Guo, Zhou Li et al. · 2025 · BMC Microbiology

Abstract Backgrounds Microbial dysbiosis in the gut and urine has been implicated in patients with benign prostatic hyperplasia (BPH) in previous studies. Additionally, emerging evidence suggests that salivary dysbiosis is associated with various diseases and oral health conditions. Building on these findings, this study aimed to investigate whether BPH patients exhibit a distinct salivary microbiome. Methods and materials We recruited a cohort of BPH patients (n = 50) and age- and BMI-matched healthy controls (HC; n = 50). Salivary samples were collected for 16S rRNA gene sequencing, and pros

View details →DOI: 10.1186/s12866-025-04444-z
Negative / Null Result ReportOpen accessMedicine (General)

Impact of PAI-1 4G/5G and C > G polymorphisms in acute ST elevation myocardial infarction and stable angina patients: A single center Egyptian study

Hanan Al-Wakeel, Nadia Sewelam, Mohamed Khaled et al. · 2018 · Egyptian Journal of Medical Human Genetics

Background: Many genetic factors, including polymorphisms in the genes regulating blood coagulation and fibrinolysis have been proposed as risk factors for coronary artery disease (CAD). PAI-1 is the chief inhibitor of tissue plasminogen activator and urokinase plasminogen activator. PAI-1 has a crucial role in regulation of fibrinolysis. Aim of the study: Is to investigate the association between Plasminogen activator inhibitor-1 (PAI-1) 4G/5G, PAI-1C/G polymorphisms and CAD. In addition, studying the relation of these polymorphisms to the level of active PAI-1 in Egyptian patients presenting

View details →DOI: 10.1016/j.ejmhg.2018.05.003
Negative / Null Result ReportOpen accessDiseases of the endocrine glands. Clinical endocrinology

Association between Helicobacter pylori Infection and Diabetes: A Cross-Sectional Study in China

Sailimai Man, Yuan Ma, Cheng Jin et al. · 2020 · Journal of Diabetes Research

Background. Studies suggest an association between H. pylori infection and extragastrointestinal disease. Limited studies provided conflicting results on the association between H. pylori infection and diabetes. The present study was aimed at examining the association between H. pylori infection and diabetes in a large health checkup population in China. Methods. A cross-sectional study was conducted; participants who attended health checkups at Beijing MJ Health Screening Center during 2017-2018 were included. H. pylori infection was diagnosed by 13C-urea breath test. Multivariate logistic re

View details →DOI: 10.1155/2020/7201379
Negative / Null Result ReportOpen accessMedicine

Anxiety and Depressive Symptoms as Predictors of All-Cause Mortality among People with Insulin-Naïve Type 2 Diabetes: 17-Year Follow-Up of the Second Nord-Trøndelag Health Survey (HUNT2), Norway.

Marjolein M Iversen, Giesje Nefs, Grethe S Tell et al. · 2016 · PLoS ONE

Aim To examine whether elevated anxiety and/or depressive symptoms are related to all-cause mortality in people with Type 2 diabetes, not using insulin. Methods 948 participants in the community-wide Nord-Trøndelag Health Survey conducted during 1995-97 completed the Hospital Anxiety and Depression Scale with subscales of anxiety (HADS-A) and depression (HADS-D). Elevated symptoms were defined as HADS-A or HADS-D ≥8. Participants with type 2 diabetes, not using insulin, were followed until November 21, 2012 or death. Cox regression analyses were used to estimate associations between baseline e

View details →DOI: 10.1371/journal.pone.0160861
Negative / Null Result ReportOpen accessPathology

Interaction of chronic daily headache, dietary intake of iron, and FTO genotype

Yeganeh Shekari, Zahra Mahmoodi, Mohammadtaghi Ghorbani Hesari et al. · 2026 · Molecular Pain

Background: Chronic daily headache (CDH) is known to be a common and debilitating disease that is influenced by genetic, dietary, and lifestyle factors. Iron (Fe) plays a key role in energy metabolism and neurotransmitter synthesis, while the FTO gene polymorphism (rs9939609) may play a role in modulating nutritional responses and nutrient metabolism. This study aimed to determine the interaction between CDH odds, dietary iron intake, and FTO genotype. Methods: This case-control study was conducted on 150 CDH patients and 150 healthy individuals aged 40–80 years. Participants were assessed for

View details →DOI: 10.1177/17448069261439611
Negative / Null Result ReportOpen accessPublic aspects of medicine

Prenatal exposure to bisphenol A and phthalates and behavioral problems in children at preschool age: the Hokkaido Study on Environment and Children’s Health

Machiko Minatoya, Sachiko Itoh, Keiko Yamazaki et al. · 2018 · Environmental Health and Preventive Medicine

Abstract Background Studies reported adverse behavioral development including internalizing and externalizing problems in association with prenatal exposure to bisphenol A (BPA) and phthalates; however, findings were not sufficient due to using different assessment tools and child ages among studies. This study aimed to examine associations between maternal serum levels of BPA and phthalate metabolites and behavioral problems at preschool age. Methods The Strengths and Difficulties Questionnaire (SDQ) was used to assess behavioral problems at 5 years of age. BPA and phthalate metabolite levels

View details →DOI: 10.1186/s12199-018-0732-1