Publications by authors named "de CLERCQ"

Aphasia is a common consequence of a stroke which affects language processing. In search of an objective biomarker for aphasia, we used EEG to investigate how functional network patterns in the cortex are affected in persons with post-stroke chronic aphasia (PWA) compared to healthy controls (HC) while they are listening to a story. EEG was recorded from 22 HC and 27 PWA while they listened to a 25-min-long story.

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In order to enhance the anti-HIV-1 potency and selectivity of the previously reported compound 3 (EC = 27 nM, SI = 1361), a series of novel biphenyl-diarylpyrimidine derivatives were developed by employing structure-based drug design strategy. Among these derivatives, compound M44 demonstrated the most potent inhibitory activity against wild-type (WT) HIV-1 as well as five drug-resistant mutants (EC = 5-148 nM), which were 5-173 times more potent than that of 3 (EC = 27-9810 nM). Furthermore, this analogue exhibited approximately 11-fold lower cytotoxicity (CC = 54 μM) than that of etravirine and rilpivirine.

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The placental DNA methylation landscape is unique, with widespread partially methylated domains (PMDs). The placental "methylome" is conserved across mammals, a shared feature of many cancers, and extensively studied for links with pregnancy complications. Human trophoblast stem cells (hTSCs) offer exciting potential for functional studies to better understand this epigenetic feature; however, whether the hTSC epigenome recapitulates primary trophoblast remains unclear.

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Introduction: 22q11 deletion syndrome (22q11DS) results from a microdeletion on chromosome 22 and is the most common microdeletion disorder in humans, affecting 1 in 2148 live births. Clinical manifestations vary widely among individuals and across different life stages. Effective management requires the involvement of a specialized multidisciplinary team.

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Background: Intensive Family Preservation Services (IFPS) are an important part of child welfare. They are short-term, in-home treatment programs aimed at preventing imminent out-of-home placements, however, today, their overall effectiveness remains unclear.

Objective: This study aims to conduct a comprehensive review of IFPS effectiveness, evaluate a wide range of outcomes, and analyze the impact of various factors on its success.

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Climate change poses a major threat to crop production, resulting in the emergence of new pests and diseases. has recently emerged as a major concern in hydroponic lettuce cultivation, causing substantial yield and economic losses. This oomycete pathogen thrives in elevated water temperatures induced by warmer weather conditions (e.

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Article Synopsis
  • * The study introduces enhanced modeling techniques for neutrino flux and detector response, and it distinguishes between starting (inside) and throughgoing (outside) neutrino interaction events to improve energy resolution.
  • * The findings indicate a best-fit point for the 3+1 model with sin²(2θ_{24})=0.16 and Δm_{41}²=3.5 eV², supporting previous studies while showing consistency with no evidence of sterile neutrinos, as reflected
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Importance: Fostamatinib, a spleen tyrosine kinase inhibitor, has been reported to improve outcomes of COVID-19.

Objective: To evaluate the efficacy and safety of fostamatinib in adults hospitalized with COVID-19 and hypoxemia.

Design, Setting, And Participants: This multicenter, phase 3, placebo-controlled, double-blinded randomized clinical trial was conducted at 41 US sites and 21 international sites between November 17, 2021, and September 27, 2023; the last follow-up visit was December 31, 2023.

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With varying prevalence and manifestations depending on the underlying disease, thoracic involvement is one of the major factors determining morbidity and mortality in patients with rheumatic diseases (RDs). The most frequent pulmonary complication is interstitial lung disease (ILD), but other thoracic manifestations can also be present. Often, the only way to depict these extra-articular manifestations of disease is through imaging.

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Structural variants (SVs) are important contributors to human disease. Their characterization remains however difficult due to their size and association with repetitive regions. Long-read sequencing (LRS) and optical genome mapping (OGM) can aid as their molecules span multiple kilobases and capture SVs in full.

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A series of 3,5-benzylidene-4-piperidones, -, were prepared to evaluate the hypothesis that the placement of different groups in the ortho-location of the aryl rings led to compounds with greater cytotoxic potencies than structural analogs. The bioevaluation of - was undertaken using human Molt/4C8 and CEM cells as well as murine L1210 cells. Correlations were sought between the interplanar angles θ and θ and the cytotoxic potencies.

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Article Synopsis
  • *Researchers reviewed data from 100 patients who underwent hip arthroscopy for FAI, measuring their alpha angles before and after surgery, and assessing the reliability of these measurements.
  • *Results showed a significant difference between the outer alpha angle (average 77.0°) and the inner alpha angle (average 46.4°), indicating that the imaging technique could effectively guide how much bone needs to be resected for optimal outcomes.
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About 5% of patients with cutaneous squamous cell carcinoma (cSCC) have a poor prognosis which is associated with a loss of tumor differentiation, invasion and metastasis, all of which are linked to the process of epithelial-to-mesenchymal plasticity (EMP). Here, we showed that the EMP-associated transcription factor ZEB2 drives cSCC heterogeneity which resembles biphasic carcinosarcoma-like tumors. Single cell RNA sequencing revealed distinct subpopulations ranging from fully epithelial (E) to intermediate (EM) to fully mesenchymal (M), associated with the gradual loss of cell surface markers EPCAM, CDH1, ITGB4, and CD200.

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As an important part of anti-AIDS therapy, HIV-1 non-nucleoside reverse transcriptase inhibitors are plagued by resistance and toxicity issues. Taking our reported XJ-18b1 as lead compound, we designed a series of novel diarypyrimidine derivatives by employing a scaffold hopping strategy to discover potent NNRTIs with improved anti-resistance properties and drug-like profiles. The most active compound 3k exhibited prominent inhibitory activity against wild-type HIV-1 (EC = 0.

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Coverage of ChatGPT-style large language models (LLMs) in the media has focused on their eye-catching achievements, including solving advanced mathematical problems and reaching expert proficiency in medical examinations. But the gradual adoption of LLMs in agriculture, an industry which touches every human life, has received much less public scrutiny. In this short perspective, we examine risks and opportunities related to more widespread adoption of language models in food production systems.

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In memory of an exquisite medicinal chemist, Prof. Morris Robins.

Nucleosides Nucleotides Nucleic Acids

November 2024

Among the most prominent realizations of Morris J. Robins in the antiviral nucleoside chemistry are the synthesis of 8-substituted (methyl-, amino-, bromo-, iodo) derivatives of acyclovir, xylotubercidin as an inhibitor of herpes simplex virus (HSV) infections, the anti-HIV activity of the 2',3'-dideoxyriboside of 2,6-diaminopurine (ddDAPR) and the 3'-azido- and 3'-fluoro derivatives thereof (AzddDAPR and FddDAPR, respectively), the potentiating effect of ribavirin on the anti-HIV activity of 2',3'-dideoxyinosine (ddI) and ddDAPR, S-adenosylhomocysteine hydrolase (SAH) inhibitors principally active against vaccinia virus (VV) and vesicular stomatitis virus (VSV), and furo[2,3-d]pyrimidinone derivatives active against varicella-zoster virus (VZV).

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Introduction: The death of a child has a tremendous impact on parents' lives. The experience of parents who have lost a child to cancer may differ from other bereavement experiences, including other childhood and adulthood causes of death, because of the uncertainty of the prognosis, the aggressive treatment, and the potential for regret about treatment decisions. Bereavement care remains scarce, and effective interventions to meet the diverse needs of parents have not been defined.

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. One out of three stroke-patients develop language processing impairment known as aphasia. The need for ecological validity of the existing diagnostic tools motivates research on biomarkers, such as stimulus-evoked brain responses.

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Considering the nonideal antiresistance efficacy of our previously reported non-nucleoside reverse transcriptase inhibitor , a series of novel piperidine-diarylpyrimidine derivatives were designed through expanding solvent/protein region occupation. The representative compound proved to be exceptionally potent against Y188L (EC = 23 nM), F227L + V106A (EC = 15 nM) and RES056 (EC = 45 nM), significantly better than . This analog exerted strong inhibition against wild-type HIV-1 (EC = 3 nM) and single mutant strains (L100I, K103N, Y181C, E138 K).

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The predation capacity and functional responses of adult females of the phytoseiid mites (Muma), (Corpuz and Rimando), (Corpuz and Rimando), and (Athias-Henriot) were studied on eggs and first instars of the western flower thrips, (Pergande), in the laboratory at 25 °C and 30 °C. At both temperatures, the functional response of all four phytoseiid mites was type II to first instars of the thrips. In contrast, when offered thrips eggs, the functional response was type III.

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Background And Objectives: In Belgium, monitoring antibiotic consumption relies on reimbursement data, which is obtained with a time delay and does not account for over-the-counter or nonreimbursed products. This study aims to bridge this gap by comparing reimbursement and retail data for primary care to understand variations and assess the accuracy of current surveillance methods.

Method: Reimbursement data were obtained from the National Institute for Health and Disability Insurance, and retail data were obtained from IQVIA for the period 2013-22.

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This article presents the rapid identification of novel indolylarylsulfone (IAS) derivatives as potent non-nucleoside reverse transcriptase inhibitors (NNRTIs) for HIV-1 through a miniaturized click-chemistry-based combinatorial library approach. Utilizing copper(i)-catalyzed azide-alkyne cycloaddition (CuAAC), a reliable and biocompatible click chemistry technique, the researchers synthesized and characterized a series of IAS derivatives. Several compounds selected through the enzyme inhibition assay demonstrated promising activity in subsequent cellular level tests.

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Background: The events during acute HIV infection (AHI) set the stage for the subsequent course of the disease. Early initiation of antiretroviral therapy (ART) has been associated with favorable immunovirological outcomes, yet the precise impact of ART timing during AHI remains unclear, particularly on lymphoid tissues.

Materials And Methods: The ACS cohort is a prospective cohort study in Belgium, collecting longitudinal clinical data and human bodily material (HBM) from people diagnosed and treated during AHI.

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Background: Cemented total knee arthroplasty (TKA) is the gold standard treatment for osteoarthritis, but uncemented TKA offers benefits like improved osseointegration and reduced complications from cement debris. This study aimed to investigate (1) if there has been a rise in uncemented TKA from 2017 to 2021 and (2) if there are differences in early complications between cemented and uncemented TKA.

Methods: A retrospective data review was performed on the Michigan Arthroplasty Registry Collaborative Quality Initiative database of TKA patients from 2017 to 2021 at 6 hospitals.

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