Negative / Null Result Report
Mata M, Harmand MG, Prada-Arrondo PC et al. · 2026 · Preprint
Objective Older adults undergoing cardiac surgery may be vulnerable to postoperative cognitive decline. However, no studies have examined postoperative cognitive outcomes in older patients with cardiovascular disease (CVD) according to…
View details →DOI: 10.64898/2026.06.16.26355755 Negative / Null Result ReportMedicine
Ganji SK, Talari K, Maloth RK et al. · 2026 · Rapid communications in mass spectrometry : RCM
Rationale Nitrite anion is among the highly reactive anions and converts the secondary amines to their corresponding carcinogenic N-nitroso metabolites in the human body. Nitrite ion is highly abundant in natural waters and enters the body…
View details →DOI: 10.1002/rcm.70101 Negative / Null Result ReportMedicine
Niu J, Huang W, Zou J · 2026 · Clinical neurology and neurosurgery
Purpose To compare rupture-related signals captured by automatically extracted computed tomography angiography (CTA) morphologic features and threshold-based computed tomography perfusion (CTP) metrics in large unruptured intracranial…
View details →DOI: 10.1016/j.clineuro.2026.109547 Negative / Null Result Report
Sezen E, Kurtulmus H · 2026 · Preprint
Abstract Background To compare the time-dependent retentive-force behavior and wear-related surface alterations of two unsplinted overdenture attachment systems, a ball attachment system and a TRI Raptor Smart Box system, after…
View details →DOI: 10.21203/rs.3.rs-9463831/v1 Failed Experiment ReportOpen accessMedicine
Ghareeb SM, Abd-Elkareem M, Abou-Elmagd A · 2026 · Biological research
Salvadora persica (miswak) has many useful biological activities. Some studies have reported that miswak can be used as a contraceptive agent. However, no available investigations explain the histomorphological structure of ovarian…
View details →DOI: 10.1186/s40659-026-00711-z Failed Experiment ReportMedicine
Li X, Yan B, Zhao B et al. · 2026 · Cognition & emotion
This study investigated whether verbal humour could preventively regulate negative emotions in high trait anxiety (HTA) and low trait anxiety (LTA) individuals, exploring underlying cognitive neural mechanisms using ERPs and ERO. In a…
View details →DOI: 10.1080/02699931.2026.2683598 Failed Experiment ReportMedicine
Washino T, Nikaido T, Burrow MF et al. · 2026 · Dental traumatology : official publication of International Association for Dental Traumatology
Background/aims Adhesive procedures performed after dental trauma are often carried out in emergency settings with compromised isolation due to bleeding, limited access, and patient cooperation. This study evaluated how variation in…
View details →DOI: 10.1111/edt.70087 Failed Experiment ReportOpen accessMedicine
Znazen Y, Gaddes M, Janssens GPJ et al. · 2026 · Animals : an open access journal from MDPI
This study evaluated the effects of locally sourced ingredient dietary, with or without supplementation of black soldier fly ( Hermetia illucens ; BSF) larvae, on laying hen welfare. A total of 150 Lohman White hens aged 30 weeks were…
View details →DOI: 10.3390/ani16111724 Negative / Null Result Report
De la Hoz JF, Lee YH, Tubbs JD et al. · 2026 · Preprint
Importance Individuals with psychiatric disorders face elevated cardiometabolic risk which is linked to increased mortality. The extent to which this reflects shared pathogenesis or the downstream effects of illness and treatment remains…
View details →DOI: 10.64898/2026.06.06.26354927 Negative / Null Result ReportMedicine
Vencato AA, Juchem ALM, Clerici NJ et al. · 2026 · International journal of biological macromolecules
This study produced six formulations using polyvinyl alcohol (PVA) blended with gelatin or gelatin-starch, incorporating cinnamon powder (CP) or cinnamon essential oil (CEO). Homogeneous nanofibers with diameters ranging from 367 to 532 nm…
View details →DOI: 10.1016/j.ijbiomac.2026.153149 Negative / Null Result ReportMedicine
Park KW, Kim HY, Kim KA et al. · 2026 · European journal of orthodontics
Objective We aimed to evaluate three-dimensional (3D) maxillary displacement and secondary mandibular changes following miniscrew-assisted rapid palatal expansion (MARPE) according to pretreatment skeletal subtypes, based on the…
View details →DOI: 10.1093/ejo/cjag045 Negative / Null Result ReportMedicine
Tamini S, Bondesan A, Caroli D et al. · 2026 · Metabolites
Background/Objectives : Pediatric obesity is closely associated with metabolic syndrome (MetS), a condition linked to increased cardiometabolic risk. Early identification of high-risk individuals remains challenging. This study aimed to…
View details →DOI: 10.3390/metabo16060415 Negative / Null Result Report
Ebou AET, Amani BH, Toure GT et al. · 2026 · Preprint
Secondary forest succession following agricultural abandonment is a dominant land-use transition across the tropics, yet whether soil microbial communities recover toward old-growth forest reference states remains poorly understood,…
View details →DOI: 10.64898/2026.06.19.733386 Negative / Null Result ReportOpen accessMedicine
Li J, Song Z, Wang G et al. · 2026 · Frontiers in cell and developmental biology
Background Dilated cardiomyopathy (DCM) is the most common non-ischemic cardiomyopathy and a major cause of heart failure, but disease-specific molecular biomarkers remain limited. This study aimed to identify and prioritize tissue-level,…
View details →DOI: 10.3389/fcell.2026.1851275 Negative / Null Result ReportMedicine
An MH, Kim C, Min K et al. · 2026 · Discover oncology
Background The ProtecT randomized trial found similar survival between active surveillance (AS), radiotherapy (RT), and radical prostatectomy (PT) in localized prostate cancer (PC), but observational studies yielded conflicting results.…
View details →DOI: 10.1007/s12672-026-05392-4 Replication FailureMedicine
Kundu A, Khan A, Saha S et al. · 2026 · Journal of perioperative practice
Background Effective patient education materials on prehabilitation are essential for optimising patients before surgery. With the growing use of generative artificial intelligence (AI) chatbots in health care communication, it is…
View details →DOI: 10.1177/17504589261454163 Negative / Null Result Report
li j, Chen Y, Chen Y et al. · 2026 · Preprint
Abstract Objective To investigate the association between perioperative hypothermia and postoperative muscular calf vein thrombosis (MCVT) in patients undergoing total knee arthroplasty (TKA), and to evaluate the predictive performance of…
View details →DOI: 10.21203/rs.3.rs-9873445/v1 Negative / Null Result ReportMedicine
Doğan D, Öksüz C, Çakır Ö et al. · 2026 · Biomedicines
Background/Objectives: Differentiating mediastinal lymphadenopathy associated with lung cancer from sarcoidosis remains a clinical challenge because of overlapping imaging findings. This study evaluated whether CT-derived radiomic…
View details →DOI: 10.3390/biomedicines14061327 Negative / Null Result ReportOpen accessMedicine
Xie B, Rui Y · 2026 · Plants (Basel, Switzerland)
Nanotechnology has attracted increasing attention in agricultural and environmental research, but the biological effects and potential risks of nanoparticles based on non-essential elements remain insufficiently understood. This study…
View details →DOI: 10.3390/plants15111727 Negative / Null Result Report
Potdar A, Kumari A · 2026 · Preprint
Abstract Solar radio bursts in the metric and decametric ranges are direct signatures of accelerated electrons in the solar atmosphere. It is almost always the case that these bursts are associated with solar flares. In the present study,…
View details →DOI: 10.21203/rs.3.rs-9628976/v1 Failed Experiment ReportOpen accessMedicine
Fouad S, Abass M, Rizk A et al. · 2026 · Scientific reports
Epidural fibrosis (EF) refers to the non-physiological scar formation at the site where a surgical incision is made to access the spinal canal. This condition often results in functional disability and pain following spinal surgery and is…
View details →DOI: 10.1038/s41598-026-54270-0 Negative / Null Result ReportMedicine
Destro JM, Reis BO, Chrisostomo DA et al. · 2026 · Journal of functional biomaterials
This study aimed to evaluate the effects of experimental bioactive glass solutions on dentinal fluid flow and hydraulic conductance in vitro. Dentin blocks of 50 bovine incisors were divided into 5 groups according to the desensitizing…
View details →DOI: 10.3390/jfb17060302 Negative / Null Result ReportOpen accessMedicine
Xu Z, Su S, Xu Z et al. · 2026 · Frontiers in psychology
The Drive for Muscularity Attitudes Questionnaire (DMAQ) is a brief tool for assessing muscularity-related attitudes. This study translated the DMAQ into Chinese and evaluated its reliability and validity separately in males and females. A…
View details →DOI: 10.3389/fpsyg.2026.1732786 Negative / Null Result ReportMedicine
Koyuncu Z, Evcil FY, Kilimci ÖS et al. · 2026 · BMC psychiatry
Objective This study investigated whether current comorbid psychiatric symptoms were involved in statistical indirect associations between childhood attention-deficit/hyperactivity disorder (ADHD) symptoms (CAS) and functional impairment…
View details →DOI: 10.1186/s12888-026-08299-0 Negative / Null Result Report
Hirano K, Seki T, Watanabe A et al. · 2026 · Preprint
Background Initiation of emergency dialysis, often requiring temporary catheter owing to unprepared definitive vascular access, is associated with infectious and vascular complications and suggests advanced chronic kidney disease (CKD)…
View details →DOI: 10.64898/2026.06.21.26356128 Negative / Null Result ReportMedicine
Gessler KB, Rescaroli J, Pires SM et al. · 2026 · Neurotoxicity research
Atorvastatin is a widely prescribed statin used for its cholesterol-lowering effects; however, it also exerts known pleiotropic effects, including antioxidant and anti-inflammatory properties. Atorvastatin´s impact on mitochondrial…
View details →DOI: 10.1007/s12640-026-00805-2 Negative / Null Result Report
Pan Y, Sun Y, Shi C et al. · 2026 · Preprint
Abstract Genetic testing guides personalized management of differentiated thyroid carcinoma (DTC). However, tumor heterogeneity, including spatial and temporal heterogeneity, has created an unresolved clinical problem. It remains unclear…
View details →DOI: 10.21203/rs.3.rs-9922971/v1 Negative / Null Result ReportMedicine
Tuo Y, Yang S, Dai X et al. · 2026 · Journal of ethnopharmacology
Ethnopharmacological relevance Syringa oblata Lindl. emits a variety of biogenic volatile organic compounds (BVOCs) during full bloom, which forms the key chemical basis for its characteristic floral scent. Species of the genus Syringa…
View details →DOI: 10.1016/j.jep.2026.122022 Negative / Null Result ReportMedicine
Zhen B, Yang X, Yao B · 2026 · Scandinavian journal of psychology
Child abuse has been significantly associated with children's mobile phone dependence (MPD), particularly in left-behind children (LBC). However, whether distinct forms of child abuse (physical and emotional) are associated with MPD in LBC…
View details →DOI: 10.1111/sjop.70119 Negative / Null Result ReportOpen access
Idawati, I. (Idawati), Wahyudi, W. (Wahyudi), Endang, B. (Busri) · 2016
In this research method used is quantitative method, the type of comparative studies, to compare existing organizational culture in school achievement. Data used primary data. The results showed that (1) There is no significant difference…