Negative / Null Result ReportMedicine
Bruni M, Perina F, Figueiredo J et al. · 2026 · Aquatic toxicology (Amsterdam, Netherlands)
Metallic corrosion poses an economic problem worldwide and is often mitigated by adding corrosion inhibitors (CIs) to protective coatings. Conventional CIs, such as 2-mercaptobenzothiazole (MBT) and benzotriazole (BTA), exhibit toxicity to…
View details →DOI: 10.1016/j.aquatox.2026.107912 Negative / Null Result ReportMedicine
Swallow C, Imamoglu M, Imamoglu AG et al. · 2025 · Urogynecology (Philadelphia, Pa.)
Importance Sacrocolpopexy is essential in the surgical management of advanced pelvic organ prolapse, and selecting the appropriate route for concomitant hysterectomy is critical. Objectives The aim of this study was to evaluate the effect…
View details →DOI: 10.1097/spv.0000000000001659 Negative / Null Result ReportOpen accessMedicine
Quan TT, Nguyen HM, Nguyen HT et al. · 2026 · Cureus
Objective This study aims to describe ductus arteriosus (DA) morphology in patients with pulmonary atresia with ventricular septal defect (PA-VSD) and to assess exploratory paired differences between echocardiography and digital…
View details →DOI: 10.7759/cureus.108765 Negative / Null Result Report
Sorjonen K, Melin B, Melin M · 2026 · Preprint
Based on statistically significant effects in cross-lagged panel network (CLPN) models, Ning and Zou concluded bidirectional prospective influences between negative self-attention and depression. However, cross-lagged effects may be…
View details →DOI: 10.31234/osf.io/4pqj7_v1 Negative / Null Result ReportOpen accessMedicine
Seber T, Uylar Seber T, Çiçek F et al. · 2026 · Journal of pain research
Purpose Fibromyalgia (FM) is a chronic pain syndrome frequently associated with neuroendocrine dysfunction and has been hypothesized to share pathophysiological mechanisms with conditions such as empty sella (ES) and intracranial…
View details →DOI: 10.2147/jpr.s609244 Negative / Null Result ReportMedicine
Goc G, Sukur YE · 2026 · Journal of minimally invasive gynecology
Study objective To compare embryo euploidy rates and reproductive outcomes among women with ovarian endometriomas who underwent ethanol sclerotherapy (EST), laparoscopic cystectomy, or expectant management prior to in vitro fertilization…
View details →DOI: 10.1016/j.jmig.2026.06.010 Negative / Null Result ReportMedicine
Koga S, Noguchi S, Kondo T · 2026 · Pediatric surgery international
Purpose Appendiceal location may affect the diagnosis and surgical management of acute appendicitis. However, pediatric-specific data remain limited. This study evaluated appendiceal location in Japanese children with acute appendicitis…
View details →DOI: 10.1007/s00383-026-06498-0 Negative / Null Result Report
Akdag A, Aktas E, Kutlu A et al. · 2026 · Preprint
Abstract Purpose: Residual fragments after retrograde intrarenal surgery (RIRS) may compromise delayed stone-free (SF) status and increase the likelihood of secondary intervention. This study evaluated the association between postoperative…
View details →DOI: 10.21203/rs.3.rs-9849277/v1 Negative / Null Result Report
Sağlam A, Kurutaş EB, Yağmur I et al. · 2026 · Preprint
Abstract Psoriasis is a chronic immune-mediated inflammatory skin disease associated with systemic inflammation and metabolic disturbances. Adipokines have been suggested as key mediators linking metabolic dysregulation and inflammatory…
View details →DOI: 10.21203/rs.3.rs-9211473/v1 Negative / Null Result ReportMedicine
Kitamura K, Fujii M, Yamate S et al. · 2026 · International orthopaedics
Purpose The role of periacetabular osteotomy (PAO) in symptomatic borderline hip dysplasia (borderline HD) remains controversial because the lateral centre-edge angle may not reflect global dysplastic morphology. We examined whether…
View details →DOI: 10.1007/s00264-026-06923-y Negative / Null Result ReportMedicine
Carkit S, Karaagac M · 2026 · Annals of surgical oncology
Background Esophageal cancer is associated with substantial morbidity and mortality worldwide and is frequently diagnosed at advanced stages, leading patients and their relatives to seek health-related information beyond traditional…
View details →DOI: 10.1245/s10434-026-19996-1 Negative / Null Result ReportMedicine
Van der Cruyssen F, Willaert R, Palla B et al. · 2026 · International journal of oral and maxillofacial surgery
Trigeminal nerve injuries severely degrade quality of life, yet comparative effectiveness evidence for existing treatments is scarce. The authors prospectively followed 153 adults with iatrogenic lingual or inferior alveolar nerve injuries…
View details →DOI: 10.1016/j.ijom.2026.06.014 Negative / Null Result ReportMedicine
Dubowitz H, Belanger R, Magder L et al. · 2026 · Academic pediatrics
Hypothesis A Maintenance of Certification-4 activity (MOC) will help primary care practices implement the Safe Environment for Every Kid (SEEK) approach to prevent child maltreatment more effectively than simpler independent online…
View details →DOI: 10.1016/j.acap.2026.103366 Negative / Null Result ReportMedicine
Chow JW, Yablon SA, Stokic DS · 2026 · NeuroRehabilitation
BackgroundAlthough several studies have examined gait changes associated with continuous intrathecal baclofen (CITB) infusion for spasticity in ambulatory patients with acquired brain injury (ABI), none has included a control…
View details →DOI: 10.1177/10538135261459634 Negative / Null Result ReportOpen accessMedicine
Gyoten T, Akatsu T, Kuroda T et al. · 2026 · Journal of cardiothoracic surgery
Background This study aimed to evaluate clinical outcomes after surgical aortic valve replacement with third-generation Edwards (Edwards Lifesciences, Irvine, CA, USA) 19-mm-labeled aortic valve bioprostheses, including a rapid-deployment…
View details →DOI: 10.1186/s13019-026-04158-x Negative / Null Result ReportMedicine
Shen J, Yu X, Xu J et al. · 2026 · Microorganisms
Inflammatory bowel disease (IBD) is associated with microbial dysbiosis, yet subtype-specific alterations in the tongue-coating microbiome remain insufficiently characterized. In this cross-sectional study, tongue-coating samples from 158…
View details →DOI: 10.3390/microorganisms14061381 Negative / Null Result ReportMedicine
Tanrıverdi S, Yeşiltepe S · 2026 · BMC oral health
Background Antidepressants are widely prescribed group of medications frequently associated with xerostomia. Although alterations in salivary flow among antidepressant users have been extensively investigated, there is a paucity of data…
View details →DOI: 10.1186/s12903-026-08892-5 Negative / Null Result ReportMedicine
Sun Y, Lee J, Wen X et al. · 2026 · Research quarterly for exercise and sport
The basketball jump shot is a fundamental skill in competitive play, and defensive pressure has been shown to influence movement execution and post-landing control. This study investigated post-landing stability during basketball jump…
View details →DOI: 10.1080/02701367.2026.2665730 Replication FailureMedicine
Hartmann S, Wenk N, Mann E et al. · 2026 · Ultraschall in der Medizin (Stuttgart, Germany : 1980)
Purpose As part of the pretherapeutic diagnostic workup for vulvar cancer, the inguinal lymph node status should be assessed. The diagnostic value of structured inguinal sonography for predicting the histological lymph node status in…
View details →DOI: 10.1055/a-2830-7606 Replication FailureMedicine
Hoenle A, Rickert D, Steinhart H et al. · 2026 · The Journal of laryngology and otology
Objectives. To determine whether sex independently predicts survival in oropharyngeal squamous cell carcinoma and whether human papillomavirus status mediates apparent sex-related survival differences at the population level. Methods.…
View details →DOI: 10.1017/s002221512610512x Replication Failure
Ho CB, Tran TT, Ngo LT · 2026 · Preprint
Background: /Objectives: Glass-hybrid and high-viscosity glass-ionomer systems aim to improve conventional glass-ionomer performance. This in vitro study compared Vickers hardness and microleakage of a coated glass-hybrid system and a…
View details →DOI: 10.20944/preprints202606.0957.v1 Negative / Null Result Report
Ogata M, Kido J, Nagayoshi Y et al. · 2026 · Preprint
Abstract Background Vitamin D deficiency is common in early childhood and may be associated with food allergy (FA). However, the relationship between vitamin D status and FA in infants remains unclear. This study aimed to evaluate vitamin…
View details →DOI: 10.21203/rs.3.rs-9649674/v1 Negative / Null Result ReportMedicine
Suzuki H · 2026 · BMC ophthalmology
Background Previous studies have reported lower thermal profiles with torsional ultrasound than with longitudinal ultrasound; however, the mechanical determinants underlying this difference remain incompletely understood. In particular,…
View details →DOI: 10.1186/s12886-026-04968-6 Negative / Null Result ReportMedicine
Baştemur AG, Haliloğlu E, Tanaçan A et al. · 2026 · Journal of reproductive immunology
Aim This study aimed to investigate the association between the aggregate index of systemic inflammation (AISI), a novel indicator of inflammation, miscarriage, and other pregnancy complications in patients with threatened miscarriage.…
View details →DOI: 10.1016/j.jri.2026.104869 Negative / Null Result Report
Oh J, Park J, Kang D et al. · 2026 · Preprint
Background: /Objectives: Poor bone quality significantly increases the risk of mechanical complications after adult spinal deformity (ASD) surgery, including proximal junctional kyphosis (PJK) and proximal junctional failure (PJF).…
View details →DOI: 10.20944/preprints202606.1461.v1 Negative / Null Result ReportMedicine
Wayne KS, Liu H, Canales KK et al. · 2026 · Pediatric cardiology
The frontal QRS-T angle, derived from a standard 12-lead electrocardiogram (ECG), quantifies the relationship between ventricular depolarization and repolarization. Although a widened angle has been associated with myocardial disarray and…
View details →DOI: 10.1007/s00246-026-04329-6 Negative / Null Result ReportMedicine
Argon BD, Durmuş ŞV · 2026 · Cornea
Purpose To compare the accuracy and safety of 4 large language models on cornea and external disease multiple-choice questions (MCQs). Methods DeepSeek-V3.2, GPT-5.2 (via ChatGPT), Gemini 3 Pro, and Claude Opus 4.5 were tested on American…
View details →DOI: 10.1097/ico.0000000000004219 Negative / Null Result ReportMedicine
Güzel İ, Saraç H · 2026 · BMC surgery
Background The optimal timing of weight-bearing after surgical fixation of isolated lateral malleolar fractures remains debated. Although delayed mobilization is commonly practiced, early weight-bearing has been proposed as a strategy to…
View details →DOI: 10.1186/s12893-026-03836-w Negative / Null Result ReportMedicine
Kanakan A, Singh A, Kumari S et al. · 2026 · Frontiers in aging
Chronic inflammation contributes to the pathogenesis of sarcopenia in older adults. This study aimed to evaluate the correlation between inflammatory biomarkers such as C-reactive protein (CRP), tumor necrosis factor-alpha (TNF-α),…
View details →DOI: 10.3389/fragi.2026.1770257 Negative / Null Result Report
özcan FÖ, OKUDU C, Odabaş Hİ et al. · 2026 · Preprint
Abstract Purpose Chicory coffee is increasingly consumed as a caffeine-free alternative to traditional coffee; however, its acute effects during exercise remain unclear. This study aimed to compare the effects of a single serving of…
View details →DOI: 10.21203/rs.3.rs-9678223/v1 