Negative / Null Result ReportMedicine
Samuels S, Seaton M, Abdel-Rahman SM et al. · 2026 · Therapeutic innovation & regulatory science
Background Legislative initiatives have spurred an increase in pediatric drug development programs. However, some drug products studied in the pediatric population have not received an approved pediatric indication, and efforts have been…
View details →Negative / Null Result ReportMedicine
Koncz S, Pothorszki D, Papp N et al. · 2026 · British journal of pharmacology
Background and purpose Ketamine consists of two enantiomers, (R)-ketamine and (S)-ketamine, which exhibit distinct pharmacological properties. Currently, only the (S)-enantiomer has been approved for the treatment of major depressive…
View details →Negative / Null Result ReportMedicine
Boisseau W, Darsaut TE, Raymond J · 2026 · Neuro-Chirurgie
Background Non-inferiority (NI) trials are essential to evaluate whether new treatments which may offer some collateral benefit (such as less invasiveness, fewer side effects, availability, ease of administration, or lower cost) do so…
View details →Negative / Null Result ReportMedicine
Tolarba JE, Cerniglia L, Hewitt DA et al. · 2025 · Nurse education in practice
Aim This study examined the impact of fully immersive virtual reality (FIVR) on knowledge, decision-making, self-efficacy and engagement compared with traditional onboarding methods. Background Newly graduated nurses often face challenges…
View details →Methods Dead-End
Özkaya AB, Ghaseminejad Y · 2024 · Preprint
Autophagy plays a critical role in maintaining cellular homeostasis and is implicated in various physiological and pathological processes, including cancer, neurodegeneration, and metabolic disorders. Although typically associated with…
View details →Failed Experiment ReportMedicine
Elattar S, Basha NR, Salem A et al. · 2025 · Cardiology in review
Pulmonary arterial hypertension (PAH), a subset of pulmonary hypertension (PH), remains a progressive and debilitating disease marked by vascular remodeling and elevated pulmonary vascular resistance. Tadalafil, a phosphodiesterase type 5…
View details →Negative / Null Result ReportOpen accessMedicine
Longo G, Pacchiarotti G, Pizzigallo C et al. · 2026 · Journal of orthopaedic surgery and research
Introduction The introduction of computer-assisted navigation (CAS) in total knee arthroplasty (TKA) aimed to improve prosthetic alignment and potentially enhance long-term implant survival. However, the actual clinical benefit beyond 10…
View details →Negative / Null Result ReportMedicine
Yoshida K, Hakozaki T, Hasegawa T et al. · 2025 · Journal of clinical monitoring and computing
The aim of the present study was to investigate the utility of the intraoperative high frequency variability index (HFVI) / Analgesia Nociception Index (ANI) for predicting postoperative pain in patients undergoing open liver or pancreatic…
View details →Failed Experiment ReportOpen accessMedicine
Napora Z, Griffith O, Slobounov S · 2026 · Frontiers in neurology
The transition to active rehabilitation in concussion care requires precise tools to identify patients at risk of persistent post-concussive symptoms (PPCS). While machine learning (ML) offers the potential to personalize prognosis,…
View details →Negative / Null Result ReportMedicine
Lemoine L, Adam V, Salleron J et al. · 2025 · Brachytherapy
Purpose Removal of brachytherapy applicator is routinely performed under premedication including Kalinox® gas inhalation without general anesthesia. The applicator removal is nevertheless associated with discomfort, anxiety or pain. We…
View details →Replication FailureOpen accessMedicine
Xiao Y, Li Z, Hu B et al. · 2025 · Neurologia medico-chirurgica
For resectable malignant peripheral nerve sheath tumors, the additional benefits of radiotherapy remain controversial. This study aims to investigate whether there is an additional benefit of radiotherapy for resectable malignant…
View details →Replication FailureOpen accessMedicine
Stazi F · 2026 · European heart journal supplements : journal of the European Society of Cardiology
Despite the use of oral anticoagulants, the residual risk of recurrent ischaemic stroke in patients with atrial fibrillation (AF) is ∼4% per year; however, in patients who experience a stroke despite oral anticoagulant therapy (OAT), this…
View details →Negative / Null Result ReportOpen accessMedicine
Özkaya AB, Ghaseminejad Y · 2025 · FEBS open bio
Autophagy plays a critical role in maintaining cellular homeostasis and is implicated in various physiological and pathological processes, including cancer, neurodegeneration, and metabolic disorders. Although typically associated with…
View details →Failed Experiment ReportOpen accessMedicine
Comeau MO, Gascon F, Corbeil M et al. · 2025 · Acta neurochirurgica
Purpose Meningioma resection remains partial in over 25% of cases, with few known predictors of residual disease progression. This study aims to assess if dural attachment, identified on postoperative imaging, influences meningioma…
View details →Negative / Null Result ReportOpen accessMedicine
Lee JW, Kim CJ, Lee BK et al. · 2025 · JACC. Advances
Background Distal radial access (DRA) has emerged as an alternative to transradial access (TRA) in coronary procedures. However, evidence supporting its use in ST-segment elevation myocardial infarction (STEMI) remains limited. Objectives…
View details →Negative / Null Result ReportOpen accessMedicine
El-Hajj VG, El Choueiri J, Vasella F et al. · 2026 · Brain & spine
Introduction Central nervous system (CNS) melanocytomas are rare, pigmented tumors derived from leptomeningeal melanocytes. Although generally benign, they can exhibit locally aggressive behavior and recur. Despite increasing recognition,…
View details →Negative / Null Result ReportOpen accessMedicine
Barber D, Wijeratne T, Singh L et al. · 2025 · Life (Basel, Switzerland)
Sporadic Parkinson's Disease (PD) affects 3% of people over 65 years of age. People are living longer, thanks in large part to improvements in global health technology and health access for non-neurological diseases. Consequently,…
View details →Replication FailureOpen accessMedicine
Florens N, Demiselle J · 2026 · Kidney360
Iodinated contrast media have long been feared for causing contrast-induced AKI (CI-AKI), a concern rooted in early reports with high-osmolar agents. Experimental data suggest potential nephrotoxic mechanisms, yet clinical evidence from…
View details →Methods Dead-EndMedicine
Koretz RL · 2025 · Current opinion in clinical nutrition and metabolic care
Purpose of review To assess the quality of recently published (18 months from date of article request) randomized trials/systematic reviews of such trials that addressed the use of nutritional support in critically ill patients. Recent…
View details →Failed Experiment ReportMedicine
Karim B, Alwi I, Yamin M et al. · 2025 · Acta medica Indonesiana
Background Inflammation plays a role in ST-segment elevation myocardial infarction (STEMI), especially in reperfusion injury (RI). Colchicine, an anti-inflammatory drug, can suppress inflammation during RI. We assessed the effectiveness of…
View details →Failed Experiment ReportOpen accessMedicine
Zhuang L, Woo J, Francisco F et al. · 2024 · Journal of clinical apheresis
The majority of the time hematopoietic progenitor cells (HPC) are collected through leukapheresis, where anticoagulants are necessary to prevent clotting of the apheresis circuit and HPC product. Although clotting of the product is a…
View details →Negative / Null Result ReportOpen accessMedicine
Lazarevic Lindblad M, Pålsson E, Lazarevic V et al. · 2026 · Infection prevention in practice
Background Central venous catheters (CVCs) are commonly used in patients with haematological diseases but are associated with infectious complications. The CVC Anti-infection Double Lumen Bundle was introduced in December 2020 to reduce…
View details →Negative / Null Result ReportOpen accessMedicine
Sunwoo JS, Cho YW, Shin WC et al. · 2025 · Journal of clinical neurology (Seoul, Korea)
Background and purpose To evaluate the clinical efficacy and safety of pregabalin in Korean adults with restless legs syndrome (RLS). Methods In this randomized, multicenter, double-blind, placebo-controlled trial, 78 patients with RLS…
View details →Abandoned HypothesisOpen accessMedicine
Derakhshan A, Zia MJ, Tavakkol Afshari J et al. · 2026 · Medical hypothesis, discovery & innovation ophthalmology journal
Background Primary open-angle glaucoma (POAG) is characterized by increased resistance to aqueous humor outflow. Transforming growth factor beta-1 (TGF-beta1) contributes to this resistance by promoting synthesis and remodeling of the…
View details →Short NoteMedicine
de Graaf IM, de Jonghe A, Golüke NMS et al. · 2026 · Journal of clinical medicine
Background: Basal ganglia calcifications (BGCs) are frequently detected on brain CT scans in older adults, but their clinical relevance for mobility and fall risk is unclear. This study investigated the association of BGCs with impaired…
View details →Negative / Null Result ReportMedicine
Gaeini Z, Mirmiran P, Azizi F · 2026 · Scientific reports
While emerging evidence from Western populations suggests that higher carbohydrate quality (assessed by indices incorporating fiber, glycemic index, whole grains, and solid carbohydrate sources) is inversely associated with cardiovascular…
View details →Negative / Null Result ReportMedicine
Soral S, Bargale S, Dave B et al. · 2026 · Journal of the Indian Society of Pedodontics and Preventive Dentistry
Background Orthodontic treatment has long been associated with visible wires in the mouth. Clear aligners, once limited to mild crowding/spacing, are now supported for correcting more complex malocclusions. While Clear Aligner Therapy…
View details →Negative / Null Result ReportMedicine
Manca A, Palermiti A, Corcione S et al. · 2026 · Antibiotics (Basel, Switzerland)
Background/Objectives: Cefiderocol (FDC) is a siderophore-containing cephalosporin that retains activity against many β-lactamase-producing bacteria, such as New Delhi metallo-β-latamase-producing (NDM) K. pneumoniae . Its use in…
View details →Negative / Null Result ReportOpen accessOils, fats, and waxes
刘芳1,吴苏喜1,2,蒋明芳1,谭传波3,李普选2LIU Fang1, WU Suxi1,2, JIANG Mingfang1, TAN Chuanbo3, LI Puxuan2 · 2022 · Zhongguo youzhi
为了了解不同制油工艺对油茶籽油生物活性成分含量和抗氧化活性的影响,以油茶果为原料,采取鲜榨法、浸提法、新水法、冷榨法和热榨法5种制油工艺分别制取油茶籽油,研究对比了5种制油工艺的提油率,所制取的油茶籽油的脂肪酸组成、生物活性成分(生育酚、角鲨烯及多酚)含量及其对DPPH自由基和ABTS自由基的清除能力。结果表明,5种制油工艺的提油率均在73%以上,其中浸提法((96.45±3.02)%)最高,冷榨法((73.72±2.76)%)最低,鲜榨法((82.36±224)%)、新水法((81.91±3.21)%)和热榨法((80.34±2.09)%)没有显著差异;5种工艺所制取的油茶籽油具有相似的脂肪酸组成;在α-生育酚和总生育酚含量方面,新水法制取的油茶籽油含量最高(α-生育酚含量(263.77±1.58)mg/kg,总生育酚含量(280.55±1.64)mg/kg),鲜榨法、冷榨法和热榨法制取的油茶籽油中总生育酚含量接近,在233~244 mg/kg之间,浸提法制取的油茶籽油中总生育酚含量只有(17.10±0.76)mg/kg;在角鲨烯和多酚含量方面,鲜榨法制取的油茶籽油明显高于其他工艺的,分别为(350.56±7.60)mg/kg和(45.04±4.50)mg/kg,新水法制取的油茶籽油角鲨烯含量最低,为(249.99±3.73)mg/kg,浸提法制取的油茶籽油多酚含量最低,为(7
View details →Negative / Null Result ReportOpen accessBiology (General)
Muhammad Abba Isah Audu, Yusuf Idris, Muhammad Liman Muhammad et al. · 2022 · Botanica
The nutritional attributes of sesame, Sesamum indicum, vary substantially and are primarily influenced by the plant’s genetic makeup. This investigation accessed the biochemical composition of sesame mutants from two generations. Seeds of eleven M3 lines were planted in a Randomized Complete Block Design (RCBD) to raise M4 lines, which were advanced to M5 generation. The seeds were harvested at maturity, and their biochemical compositions were quantitatively determined following standard procedures. Results revealed significant differences (p 0.05) was observed in ash content of M4 and M5 muta
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