Negative / Null Result ReportOpen accessMedicine
Bijay Kumar Jha, Sanjay Varikuti, Chaitenya Verma et al. · 2023 · npj Vaccines
Human infection with the protozoan parasite Trypanosoma cruzi causes Chagas disease for which there are no prophylactic vaccines. Cyclophilin 19 is a secreted cis-trans peptidyl isomerase expressed in all life stages of Trypanosoma cruzi. This protein in the insect stage leads to the inactivation of insect anti-parasitic peptides and parasite transformation whereas in the intracellular amastigotes it participates in generating ROS promoting the growth of parasites. We have generated a parasite mutant with depleted expression of Cyp19 by removal of 2 of 3 genes encoding this protein using doubl
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Mojun Zhu, Brian A. Costello, Jun Yin et al. · 2021 · Pancreas
OBJECTIVES: Systemic therapies for pancreatic neuroendocrine tumors (PNETs) are limited. The combination of bevacizumab and temsirolimus showed significant antitumor activity, but the single-agent activity of bevacizumab was unknown. We…
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Hisayuki Katsuyama, Hidekatsu Yanai, Hiroki Adachi et al. · 2023 · Gastroenterology Research
Background: We previously reported that the selective peroxisome proliferator-activated receptor alpha modulator, pemafibrate, significantly reduced serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and…
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Sha Sha, Lina Ren, Xiaona Xing et al. · 2025 · Neural Regeneration Research
Alzheimer's disease, a devastating neurodegenerative disorder, is characterized by progressive cognitive decline, primarily due to amyloid-beta protein deposition and tau protein phosphorylation. Effectively reducing the cytotoxicity of…
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S. Lot Aronson, Bram Thijssen, Marta López‐Yurda et al. · 2025 · Nature Communications
While immune checkpoint inhibitors (ICIs) have revolutionized cancer treatment, their efficacy in high-grade serous ovarian cancer (HGSOC) remains limited. Some patients, however, achieve lasting responses, emphasizing the need to…
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Vasileios Angelis, Alicia Okines · 2023 · Cancers
Despite recent advances, HER2-positive advanced breast cancer (ABC) remains a largely incurable disease, with resistance to conventional anti-HER2 drugs ultimately unavoidable for all but a small minority of patients who achieve an enduring remission and possibly cure. Over the past two decades, significant advances in our understanding of the underlying molecular mechanisms of HER2-driven oncogenesis have translated into pharmaceutical advances, with the developing of increasingly sophisticated therapies directed against HER2. These include novel, more potent selective HER2 tyrosine kinase in
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J. Robert McCorkle, Rebecca Ahn, Connie D. Cao et al. · 2024 · Cancers
) known as artemisinins. Artesunate has traditionally been used as a frontline treatment for severe malaria but has also demonstrated antineoplastic activity against various malignancies, including ovarian cancer. Data suggest that artesunate exacerbates cellular oxidative stress, triggering apoptosis. In the current study, we investigated the ability of navitoclax, an inhibitor of the antiapoptotic Bcl-2 protein family, to enhance artesunate efficacy in ovarian cancer cells. Artesunate and navitoclax both demonstrated antiproliferative effects on 2D and 3D ovarian cancer cell models as single
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Lujun Shen, Fei Cao, Ying Liu et al. · 2025 · BMC Medicine
BACKGROUND: Hepatic arterial infusion chemotherapy (HAIC) with a combination of oxaliplatin, fluorouracil, and leucovorin (FOLFOX) has shown excellent local control for patients with Barcelona Clinic Liver Cancer (BCLC) stage C…
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Shailesh D. Pawar, Sadhana S. Kode, Sachin S. Keng et al. · 2022 · The Indian Journal of Medical Research
Background & objectives Polio, measles, rubella, influenza and rotavirus surveillance programmes are of great public health importance globally. Virus isolation using cell culture is an integral part of such programmes. Possibility of…
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Xiaolin Yu, Jie Zhu, Xiang‐meng Liu et al. · 2020 · British Journal of Pharmacology
BACKGROUND AND PURPOSE: Immunotherapeutic intervention is one of the most promising strategies for the prevention and treatment of Alzheimer's disease (AD). Although they showed great success in AD mouse models, the clinical trials of many…
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Adrian K. Davison, Graham Dinsdale, Paul New et al. · 2022 · Rheumatology Advances in Practice
Objective: Clinical trials assessing systemic sclerosis (SSc)-related digital ulcers have been hampered by a lack of reliable outcome measures of healing. Our objective was to assess the feasibility of patients collecting high-quality mobile phone images of their digital lesions as a first step in developing a smartphone-based outcome measure. Methods: Patients with SSc-related digital (finger) lesions photographed one or more lesions each day for 30 days using their smartphone and uploaded the images to a secure Dropbox folder. Image quality was assessed using six criteria: blurriness, shadow
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Ecaterina E. Dumbrava, Thomas E. Stinchcombe, Mrinal M. Gounder et al. · 2025 · Clinical Cancer Research
PURPOSE: Mouse double minute 2 (MDM2) is an E3 ubiquitin ligase that degrades the tumor suppressor p53. In cancers, MDM2 amplification (MDM2amp) leads to overexpression of MDM2, inducing p53 degradation and a p53-null phenotype even in the…
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Pooja Advani, Kathryn J. Ruddy, Joerg Herrmann et al. · 2023 · Frontiers in Oncology
Background The cardiotoxic effects of doxorubicin, trastuzumab, and other anticancer agents are well known, but molecular genetic testing is lacking for the early identification of patients at risk for therapy-related cardiac toxicity. Methods Using the Agena Bioscience MassARRAY system, we genotyped TRPC6 rs77679196, BRINP1 rs62568637, LDB2 rs55756123, RAB22A rs707557, intergenic rs4305714, LINC01060 rs7698718, and CBR3 rs1056892 (V244M) (previously associated with either doxorubicin or trastuzumab-related cardiotoxicity in the NCCTG N9831 trial of anthracycline-based chemotherapy ± trastuzum
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Elizabeth Bartlett, Ashley Yttredahl, Maura Boldrini et al. · 2023 · European Psychiatry
Abstract Background Reported childhood adversity (CA) is associated with development of depression in adulthood and predicts a more severe course of illness. Although elevated serotonin 1A receptor (5-HT 1A R) binding potential, especially…
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Padma Kaul, Dat T. Tran, Roopinder K. Sandhu et al. · 2020 · Journal of the American College of Emergency Physicians Open
STUDY OBJECTIVE: Patients with syncope are frequently admitted to the hospital, but whether this improves outcome is unknown. We tested whether hospitalization reduced mortality in patients who presented to emergency departments (EDs) with…
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Urszula Smyczyńska, Szymon Grabia, Zuzanna Nowicka et al. · 2021 · Cancers
State-of-art normal tissue complication probability (NTCP) models do not take into account more complex individual anatomical variations, which can be objectively quantitated and compared in radiomic analysis. The goal of this project was development of radiomic NTCP model for radiation-induced hypothyroidism (RIHT) using imaging biomarkers (radiomics). We gathered CT images and clinical data from 98 patients, who underwent intensity-modulated radiation therapy (IMRT) for head and neck cancers with a planned total dose of 70.0 Gy (33–35 fractions). During the 28-month (median) follow-up 27 pat
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Zeev Elkoshi · 2021 · Frontiers in Immunology
A binary model for the classification of chronic diseases has formerly been proposed. The model classifies chronic diseases as “high Treg” or “low Treg” diseases according to the extent of regulatory T cells (Treg) activity (frequency or function) observed. The present paper applies this model to severe acute respiratory syndrome coronavirus 2 (SARS - CoV - 2) infection. The model correctly predicts the efficacy or inefficacy of several immune-modulating drugs in the treatment of severe coronavirus disease 2019 (COVID-19) disease. It also correctly predicts the class of pathogens mostly associ
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Yuan Lin, Fang Zhou, Xihui Wang et al. · 2023 · PeerJ
Purpose: To investigate the prognostic value of the index of cardio-electrophysiological balance (ICEB) and its association with major adverse cardiac events (MACE) and cardiovascular death in diabetic patients complicated with coronary heart disease. Methods: A total of 920 diabetic patients were enrolled in this longitudinal study. Participants were categorized into three groups based on their ICEB levels: normal ICEB, low ICEB, and high ICEB. The primary outcome was the occurrence of MACE, and secondary outcomes included cardiovascular death, coronary heart disease (CHD), heart failure (HF)
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Jianbo Wang, Hussein A. Tawbi · 2021 · Neuro-Oncology Advances
Brain metastases from solid tumors are increasing in incidence, especially as outcomes of systemic therapies continue to extend patients' overall survival. The long-held notion that the brain is an immune sanctuary has now been largely…
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Maryam Karimi, Mazaher Khodabandehloo, Bahram Nikkhoo et al. · 2016 · PubMed
Background and Objective: Any role of human papillomavirus (HPV) in the development of breast cancer is conjectural. The aim of this study was to investigate possible links between HPV and breast cancer in women, Sanandaj, Iran. Methods:…
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Simone Conti, Edmond Y. Lau, Victor Ovchinnikov · 2022 · Antibodies
The accurate and efficient calculation of protein-protein binding affinities is an essential component in antibody and antigen design and optimization, and in computer modeling of antibody affinity maturation. Such calculations remain challenging despite advances in computer hardware and algorithms, primarily because proteins are flexible molecules, and thus, require explicit or implicit incorporation of multiple conformational states into the computational procedure. The astronomical size of the amino acid sequence space further compounds the challenge by requiring predictions to be computed
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Abdullahi Ahmed Mohamed, Camilla Fuchs Andersen, Daniel Mølager Christensen et al. · 2025 · Cardiovascular Diabetology
BACKGROUND: Sodium-glucose cotransporter-2 inhibitors (SGLT2i) increase haemoglobin and haematocrit levels, potentially causing secondary erythrocytosis-defined as a haemoglobin level above 16.5 g/dL in men and 16.0 g/dL in women-which is…
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William R. Cleek, Nicholas J. Johnson, Bjorn Watsjold et al. · 2019 · Shock
STUDY OBJECTIVE: The quick sequential organ failure assessment (qSOFA) was proposed to identify infected patients at risk for mortality, an indication of sepsis, in nonintensive care unit settings. This study tests whether qSOFA improves…
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Amira Soliman, Björn Agvall, Kobra Etminani et al. · 2023 · Journal of Medical Internet Research
BACKGROUND: Sensitive and interpretable machine learning (ML) models can provide valuable assistance to clinicians in managing patients with heart failure (HF) at discharge by identifying individual factors associated with a high risk of readmission. In this cohort study, we delve into the factors driving the potential utility of classification models as decision support tools for predicting readmissions in patients with HF. OBJECTIVE: The primary objective of this study is to assess the trade-off between using deep learning (DL) and traditional ML models to identify the risk of 100-day readmi
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Divya Narayanan, John David Rodriguez, Garrick Wallstrom et al. · 2020 · BMC Ophthalmology
BACKGROUND: To prevent irreversible vision loss in age-related macular degeneration (AMD), it is critical to detect retinal dysfunction before permanent structural loss occurs. In the current study we evaluated a series of visual function tests to identify potential endpoints to detect visual dysfunction in non-advanced AMD. METHODS: A series of visual function tests were performed on 23 non-advanced AMD subjects (AREDS grade 1-4 on simplified scale) and 34 age-matched normals (AREDS grade 0). Tests included some commonly used endpoints such as ETDRS visual acuity (VA), low luminance (LL) 2.0N
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Peter Doshi · 2024 · BMJ
A top selling antiplatelet drug has never quite shaken off doubts about its advantage over cheaper rivals. With generic versions of ticagrelor about to launch, Peter Doshi takes a fresh look at the evidence
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Leah Amundson, Brandon Boelts, Vivek Kataria et al. · 2021 · Infectious Diseases in Clinical Practice
To the Editor: Coronavirus disease 2019 (COVID-19) has resulted in a widespread pandemic in which various therapeutics have been studied. Targeted therapies focus on either the viral or the inflammatory phase to ultimately reduce disease…
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Lucy Plumb, Anna Casula, Manish D. Sinha et al. · 2023 · Clinical Kidney Journal
ABSTRACT Background Few studies describe the epidemiology of childhood acute kidney injury (AKI) nationally. Laboratories in England are required to issue electronic (e-)alerts for AKI based on serum creatinine changes. This study…
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Adam Brufsky, Michael T. Lotze · 2020 · Journal of Medical Virology
Muller's ratchet1 predicts that when mutation rates are high and a significant proportion of mutations are deleterious, a kind of irreversible ratchet mechanism will gradually decrease the mean fitness of small populations of asexual organisms.2 In cell culture, serial passage of genetically bottlenecked vesicular stomatitis virus, which grew quite rapidly on HeLa cells, severely reduced in fitness and virulence within 20 passages in a novel BHK host cell.2 Genetic bottlenecks are likely important in intraspecies viral transmission.3 RNA-based viruses are particularly prone to repeated bottlen
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Sara R. Rashkin, Mario A. Cleves, Gary M. Shaw et al. · 2022 · American Journal of Medical Genetics Part A
Abstract Obstructive heart defects (OHDs) share common structural lesions in arteries and cardiac valves, accounting for ~25% of all congenital heart defects. OHDs are highly heritable, resulting from interplay among maternal exposures,…
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