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Browse the failure-mode index

12,246 real negative results, null findings, and replication failures in Medicine. 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 ReportMedicine

Transcutaneous vagus nerve stimulation for postoperative pain reduction in patients with childhood trauma: A randomized controlled pilot study.

Butzlaff R, Christoph C, Puhl L et al. · 2026 · Journal of psychosomatic research

Background Transcutaneous auricular vagus nerve stimulation (taVNS) is a promising non-pharmacological approach for postoperative pain management, but its interaction with childhood trauma (CT) remains unclear. This three-armed randomized…

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Negative / Null Result ReportMedicine

COP9 signalosome deneddylation activity is required for proliferation but not dedifferentiation of vascular smooth muscle cells in neointimal hyperplasia.

Giri S, Wang X · 2026 · American journal of physiology. Heart and circulatory physiology

Neointimal hyperplasia (NH) is a prominent pathological consequence following vascular injury and is driven in part by aberrant vascular smooth muscle cell (VSMC) proliferation. COP9 signalosome (CSN) subunit 5 (CSN5/JAB1/COPS5) is the…

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Negative / Null Result ReportMedicine

Effects of environmental enrichment on lymph node mitochondrial-redox status and immune response in adult male C57BL/6 mice.

de Sousa Fernandes MS, Kanashiro A, da Silva Fidélis DE et al. · 2026 · Scientific reports

Environmental enrichment (EE), an experimental paradigm promoting cognitive, sensory, social, and motor stimulation, has been associated with neuroprotective effects. Although EE modulates immune function, its influence on the basal redox…

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Negative / Null Result ReportMedicine

JNK inhibition suppresses microglial NLRP3 activation and oxidative stress but unexpectedly worsens pain in diabetic neuropathy: insights from a combined in vitro and in vivo pharmacological study.

Ling L, Ali T, Li X et al. · 2026 · Neurochemistry international

Diabetic neuropathy (DN) is driven by neuroinflammation and oxidative stress, with c-Jun N-terminal kinase (JNK) as a key mediator; however, the effects of JNK inhibition on neuropathic pain remain unclear. Therefore, we investigated the…

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Negative / Null Result ReportMedicine

The Effect of Denture Cleansers on the Surface Roughness of Heat-Polymerized Denture Base Resins Polished by Three Different Techniques.

Chatzivasileiou K, Kamalakidis SN, Pissiotis AL et al. · 2026 · The International journal of prosthodontics

Purpose To evaluate the combined effect of different polishing protocols and different denture cleansers on the surface roughness of three heat-polymerized polymethyl methacrylate (PMMA) denture base materials. Materials and methods The…

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Negative / Null Result ReportMedicine

Effects of high-temperature treatment on in vitro protein digestibility and protein profiles of pea ingredients obtained from wet and dry fractionation.

Duque-Estrada P, Markussen B, Schutyser M et al. · 2026 · Food chemistry

Thermal treatment can improve plant protein digestibility by inactivating antinutrients and partially denaturing proteins, but depending on the conditions applied, heating may also promote aggregation and amino acid modifications that…

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Negative / Null Result ReportMedicine

Flexible Coupling of Synaptic and Intrinsic Plasticity in a Cerebellar Circuit.

Shim HG, Fanning AS, Raymond JL · 2026 · The Journal of neuroscience : the official journal of the Society for Neuroscience

It is increasingly recognized that learning and memory depend not only on changes in synaptic strength but also on experience-dependent modifications of intrinsic neuronal excitability. However, how these two forms of plasticity interact…

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Negative / Null Result ReportMedicine

Surface charge engineering improves the alkaline resistance of Pseudoalteromonas tetraodonis κ-carrageenase for application in hydrolysis of κ-carrageenan industrial waste residues.

Su Y, Hu Q, Dou Z et al. · 2026 · Food research international (Ottawa, Ont.)

κ-Carrageenase with alkaline resistance can promote the resource utilization of κ-carrageenan industrial residues. In this study, a rational design strategy integrating surface charge optimization and consensus sequence analysis was…

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Negative / Null Result ReportMedicine

Help Received and Functional Decline in Older Adults: A Longitudinal Analysis of (I)ADL Difficulties Across Europe, the US, and China.

Hofbauer LM, Rodriguez FS · 2026 · Journal of applied gerontology : the official journal of the Southern Gerontological Society

PurposeThis study examined whether different types of help received influence subsequent levels of functional ability in older adults.MethodsLongitudinal data were drawn from the US Health and Retirement Study (HRS), the Survey of Health,…

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Negative / Null Result ReportMedicine

The effect of nasal patency and anatomy during asymmetrical nasal high flow.

Rees M, Vieira F, Yarragudi SB et al. · 2026 · Journal of applied physiology (Bethesda, Md. : 1985)

Nasal high flow (NHF) with the asymmetrical cannula interface (AI) is increasingly used as respiratory support across a broad range of patients. By incorporating one unilaterally oversized prong, the AI enhances dead-space clearance and…

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Negative / Null Result ReportMedicine

Mechanistic insights into the modification of peanut protein by novel radio frequency roasting: Revealing multi-scale protein conformational changes

Peng Z, Xu C, Zhang Y et al. · 2026 · Innovative Food Science and Emerging Technologies.

Radio frequency (RF) heating, as a promising alternative roasting method, could effectively improve peanut oil quality and degrade aflatoxins. However, during the peanut oil processing, the modification effect and mechanism on protein by…

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Negative / Null Result ReportMedicine

The effect of citalopram treatment on memory performance, mood state, catalase, BDNF, and MDA in REM sleep-deprived rats.

Elham Mahdavi, Ghorbani Yekta B, Fereshteh Atabi · 2026 · Cellular and molecular biology (Noisy-le-Grand, France)

Rapid-eye movement (REM) sleep is a critical stage of sleep that plays a pivotal role in memory formation, consolidation, and mood regulation. While REM sleep deprivation (REM SD) has been shown to impair cognitive and affective functions,…

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Negative / Null Result ReportMedicine

Expectations and tolerance of transcranial magnetic stimulation in patients with functional neurological disorder.

Azzopardi S, Garcin B, Mesrati F et al. · 2026 · Neurophysiologie clinique = Clinical neurophysiology

Background and objective In patients with functional neurological disorder (FND), transcranial magnetic stimulation (TMS) can be used for either diagnostic or therapeutic purpose. This study aimed to determine patients' expectations and…

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Negative / Null Result ReportMedicine

Complications of spinal fusion: comparing Medicare transforming episode accountability (TEAM) hospitals to control hospitals.

Martin BI, Mirza SK, Ko H et al. · 2026 · The spine journal : official journal of the North American Spine Society

Background context Medicare's Transforming Episode Accountability Model (TEAM) holds hospitals accountable for 30-day postoperative complications across 18 categories of spinal fusion bundles, yet baseline differences in complication rates…

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