Negative / Null Result ReportOpen accessMedicine
Wang R, Dai P, Deng X et al. · 2026 · Journal of thoracic disease
Background Thymoma is an uncommon cancer of the thymus and postoperative radiotherapy (PORT) is often considered for selected patients with high-risk or locally advanced thymoma after resection. The effect of PORT on overall survival (OS)…
View details →DOI: 10.21037/jtd-2026-1-0184 Negative / Null Result Report
Bolton A · 2026 · Preprint
Abstract While the ecological effects of internal combustion engines are well documented, especially in susceptible arctic areas like Svalbard, effects on specific genera of plants are largely neglected. The Saxifraga genus was selected…
View details →DOI: 10.21203/rs.3.rs-9763836/v1 Negative / Null Result Report
Au YE, Baskaran R, Li JY et al. · 2026 · Preprint
Abstract Background The ability to appraise and apply research is fundamental to the practice of evidence-based medicine (EBM). Despite the General Medical Council’s (GMC) mandate for United Kingdom (UK) medical graduates to integrate…
View details →DOI: 10.21203/rs.3.rs-8150678/v1 Negative / Null Result ReportOpen accessMedicine
Patel M, Schwartz K, Schenk M et al. · 2026 · Orthopaedic journal of sports medicine
Background Ulnar collateral ligament (UCL) reconstruction (UCLR) of the elbow is common in throwing athletes and reliably allows return to play. The literature supports stress imaging of the elbow to evaluate the integrity of the UCL. The…
View details →DOI: 10.1177/23259671261453313 Negative / Null Result ReportOpen accessMedicine
Kumar P, Gordon A, Fisher E et al. · 2026 · The Australian & New Zealand journal of obstetrics & gynaecology
Background Routine third trimester ultrasound scans have been introduced in several maternity centres to increase detection of fetal growth disorders and improve perinatal outcomes. Aims To assess changes in obstetric and neonatal outcomes…
View details →DOI: 10.1111/ajo.70139 Negative / Null Result ReportOpen accessMedicine
Kasowanjete P, Dhilip Kumar SS, Houreld N · 2026 · Lasers in medical science
The phosphatidylinositol 3-kinase (PI3K), protein kinase B (AKT), mammalian target of rapamycin (mTOR) (PI3K/AKT/mTOR) pathway regulates cell survival, proliferation, and the synthesis of protein. Photobiomodulation (PBM) stimulates…
View details →DOI: 10.1007/s10103-026-04859-8 Negative / Null Result ReportOpen accessMedicine
Shannon ES, Sparks SA, McNaughton LR et al. · 2026 · European journal of applied physiology
PURPOSE: Hydrogen cation (H+) accumulation is exacerbated in hypoxia. Sodium bicarbonate (NaHCO3) ingestion can reduce fatigue associated with high-intensity exercise performance by counteracting H+ ion accumulation. The present study…
View details →DOI: 10.1007/s00421-025-06069-6 Negative / Null Result Report
Aziz F, Waseem M, Asghar Z et al. · 2026 · Preprint
Abstract Air pollution is a major public health crisis in Pakistan, driven by rapid urbanization, industrial expansion, agricultural burning, and inadequate monitoring infrastructure. This study evaluates five major pollutants inlcuding…
View details →DOI: 10.21203/rs.3.rs-9825433/v1 Negative / Null Result Report
SAKDAVONG J, SEBBAG A · 2026 · Preprint
Abstract Rapid advancements in Generative AI enable the synthesis of photorealistic pedagogical agents, yet their impact on human information processing remains debated. While Social Agency Theory predicts benefits from social priming,…
View details →DOI: 10.21203/rs.3.rs-9678671/v1 Negative / Null Result Report
Alsaffar SF, Khaleel HM · 2025 · Preprint
Background Polycystic ovarian syndrome (PCOS) is a hormonal, metabolic disorder in women of reproductive age. It can be induced by genetic, immunological, and environmental determinants. The main pathophysiology of PCOS, is…
View details →DOI: 10.12688/f1000research.172281.1 Negative / Null Result Report
Shin E, Kim M, Soo TJ et al. · 2026 · Preprint
ABSTRACT To resolve discrepancies in the literature regarding the association between Alzheimer’s disease (AD) and Biondi body (BB) amyloid in choroid plexus epithelial cells (CPECs), we investigated postmortem hippocampal paraffin blocks…
View details →DOI: 10.64898/2026.05.25.727667 Negative / Null Result Report
Ni J, Yan Y, Zhang L · 2026 · Preprint
Abstract Background: Growing recognition has established rare diseases as a public health priority. With over 20 million rare disease patients in China, establishing a robust medical security system is crucial for advancing the Healthy…
View details →DOI: 10.21203/rs.3.rs-9821363/v1 Negative / Null Result ReportMedicine
Choo TH, Galfalvy HC, Keilp JG et al. · 2026 · Journal of affective disorders
Depression and its severe outcomes, suicidal ideation and behavior, are exacerbated by stress. A broad literature links dysregulation of the hypothalamic-pituitary-adrenocortical (HPA) stress response system to depression, suicidal…
View details →DOI: 10.1016/j.jad.2026.122175 Negative / Null Result ReportMedicine
Guedes Marques M, Maia P, Martins A et al. · 2026 · The journal of vascular access
Background The most common causes of early primary failures of a vascular access (VA) is related to small caliber vessels. Weight gain between dialyses expands both extracellular and blood volume, which may lead to rises in intravascular…
View details →DOI: 10.1177/11297298261461436 Negative / Null Result ReportMedicine
Medina-Valdebenito D, Espinoza-Palavicino T, Terán-Mendoza O et al. · 2026 · Journal of aging and health
ObjectivesThis study examined the influence of hearing status and loneliness on verbal fluency trajectories in adults aged 60 years and older, assessing their contributions to baseline performance and longitudinal change over…
View details →DOI: 10.1177/08982643261446020 Negative / Null Result ReportMedicine
Géczi R, Géczi G, Tóth L · 2026 · Sports (Basel, Switzerland)
The aim of this study was to examine the relative contribution of physical performance, executive functions, and competitive anxiety to competitive success in junior tennis players. A total of 39 national-level junior athletes (20 males,…
View details →DOI: 10.3390/sports14060253 Negative / Null Result ReportMedicine
Bigdelu L, Ahmadi M, Shahri B et al. · 2026 · Scientific reports
Prediction of cardiovascular diseases (CVD) is a challenge that cardiologists have always faced all the times. Aortic propagation velocity (APV) is an echocardiography index that can be helpful with this regard; however, few studies have…
View details →DOI: 10.1038/s41598-026-56810-0 Negative / Null Result ReportMedicine
Karahan Yılmaz S, Güldüren S · 2026 · Nutricion hospitalaria
Introduction Introduction: a growing world population, constraints on natural resources and changing nutritional preferences all point to the need to find an alternative to traditional animal protein sources however food neophobia can come…
View details →DOI: 10.20960/nh.06309 Negative / Null Result ReportMedicine
McDonough W, Gevorkian J, Wong D et al. · 2026 · Surgical laparoscopy, endoscopy & percutaneous techniques
Background As part of the accreditation process for bariatric surgery, patients must go through a preoperative pathway. There will inevitably be patients who are seen in the clinic but never undergo surgery. This rate of attrition is…
View details →DOI: 10.1097/sle.0000000000001443 Negative / Null Result ReportOpen accessMedicine
Wakui N, Ogino Y, Nagumo H et al. · 2026 · BMC gastroenterology
Background Zinc deficiency is common in chronic liver disease and is closely associated with the progression of hepatic fibrosis and metabolic dysfunction. Although pemafibrate, a selective peroxisome proliferator-activated receptor alpha…
View details →DOI: 10.1186/s12876-026-04806-5 Negative / Null Result ReportMedicine
Biedermann M, Sifakakis I, Zinelis S et al. · 2026 · European journal of oral sciences
Rubbing phosphoric acid during etching has been shown to improve surface roughness in prepared enamel. This study aimed to compare intact enamel's surface roughness and resin tag lengths after etching with and without rubbing. Extracted…
View details →DOI: 10.1111/eos.70108 Negative / Null Result ReportOpen accessMedicine
Hamid R, Bayramoğlu MN, Şirolu S et al. · 2026 · Journal of clinical medicine
Background: In this study, we radiologically assessed potential increases in microvascularity, extracellular matrix-related changes, and tissue viscoelasticity following carboxytherapy for periorbital hyperpigmentation (POH). We also…
View details →DOI: 10.3390/jcm15103776 Failed Experiment ReportMedicine
Van Overmeiren T, de Alaiza Ortega SG, Calle S et al. · 2026 · Progress in cardiovascular diseases
Background Mavacamten is a cardiac myosin inhibitor used for patients with obstructive hypertrophic cardiomyopathy (oHCM). The efficacy and safety of this negative inotropic agent in oHCM and concomitant left bundle branch block (LBBB)…
View details →DOI: 10.1016/j.pcad.2026.06.001 Failed Experiment ReportMedicine
Hernandez Lopez A, Post R, Chung J et al. · 2026 · The Permanente journal
Background Postpartum hemorrhage remains a leading cause of severe maternal morbidity and mortality. The association between mild thrombocytopenia and postpartum blood loss or red blood cell transfusion has not been well studied. Objective…
View details →DOI: 10.7812/tpp/25.147 Negative / Null Result ReportMedicine
Akbulut NK, Yıldız I, Yılmaz MT · 2026 · Polish journal of veterinary sciences
Melatonin not only regulates circadian rhythms in animals but also supports reproductive health through its potent antioxidant properties and immunomodulatory effects. In this study, the effects of exogenous melatonin administration on…
View details →DOI: 10.24425/pjvs.2026.1274 Negative / Null Result ReportMedicine
Firoozjaei IT, Sabzi Z, Rajabloo M et al. · 2026 · Nursing research and practice
Background During pregnancy, extensive hormonal and metabolic changes can occur. Gestational diabetes can cause maternal and neonatal complications. Follow-ups have shown that women who first develop metabolic diseases during pregnancy…
View details →DOI: 10.1155/nrp/8165809 Negative / Null Result ReportMedicine
Şenel SSD, Çetin A · 2026 · BMC psychology
Peer bullying poses a serious risk to adolescents' psychosocial development and school adjustment. However, culturally adapted and evidence-based intervention programs remain limited in non-Western societies. Restorative justice approaches…
View details →DOI: 10.1186/s40359-026-04861-3 Negative / Null Result ReportOpen accessMedicine
Ebrahimi S, Tehrani H, Ghavami V et al. · 2025 · Journal of education and health promotion
Background Brucellosis is a major bacterial infectious disease common to human beings and animals. It is considered a prevalent infection in developing countries. The present research was carried out to explore the effect of an educational…
View details →DOI: 10.4103/jehp.jehp_1034_24 Negative / Null Result ReportOpen accessMedicine
Bilgin O, Koç M · 2026 · Behavioral sciences (Basel, Switzerland)
Solution-focused brief group counseling is a systematic approach that centers on solutions rather than the problem itself. In this approach, which focuses on the strengths of the clients, the solutions are generated by the clients…
View details →DOI: 10.3390/bs16030378 Negative / Null Result Report
Sahu SK, Nayak M, Samal A et al. · 2026 · Preprint
Abstract Hypothyroidism has been associated with cognitive disorders and high risk of neurodegenerative disorders like Alzheimer's disease (AD), which is caused by amyloid-β (Aβ) accumulation in brain. The aim of the study is to examine…
View details →DOI: 10.21203/rs.3.rs-9659339/v1 