Publications by authors named "Taleb S"

Tryptophan (Trp) metabolism is linked to health and disease, with indoleamine 2,3-dioxygenase 1 (IDO) being a key enzyme in its breakdown outside the liver. This process produces metabolites that influence metabolic and inflammatory responses. A distinctive feature of the gut is its involvement in three major Trp catabolic pathways: the IDO-driven kynurenine pathway, bacteria-produced indoles, and serotonin.

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The risk of hyperkalemia in relation to different combinations of antihypertensive therapy remains to be elucidated. In this Danish register-based study, we aimed to investigate the risk of developing hyperkalemia in relation to different combinations of antihypertensive therapy. Using incidence density matching, we matched a hyperkalemic patient to five normokalemic patients on eGFR groups, age, sex, and time between study entry and date of potassium measurement.

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Background: Clinical high risk (CHR) youth are known to exhibit cognitive deficits at similar levels to their more severally ill counter parts. Cognitive training (CT) programs offer a promising method for early intervention and the prevention of further cognitive decline in this vulnerable population. However, there are few structured CT intervention programs addressing the needs of CHR youth in LMICs of the Middle East.

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Background: Human immunodeficiency virus (HIV) infection in children is a significant public health concern, increasing the risk of infant mortality. Immunodeficiency caused by HIV favors the development of opportunistic infections (OIs), which are responsible for over 90% of HIV-related deaths. This study seeks to determine the primary OIs in children with HIV followed at the Hassan II Regional Hospital Center in Sous Massa, during the period from 2012 to 2023.

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  • Psoriasis affects 2-3% of the global population and is treated with immunosuppressive drugs that can have serious side effects; Esculetin (Esc) is a natural alternative for treatment.
  • The study aims to enhance the solubility of Esc by creating nanostructured lipid carriers (NLCs), which improve skin absorption and prolong the drug's presence on the skin.
  • Results showed that Esc NLCs exhibited excellent entrapment efficiency and particle sizes that support effective skin delivery, leading to significant reductions in skin inflammation markers and highlighting their potential as a treatment for psoriasis.
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  • Chronic high cholesterol levels lead to systemic immune responses that accelerate atherosclerosis, but the impact of alternating high-fat diets (HFD) had not been well studied.
  • Researchers used a mouse model to compare the effects of an alternating HFD versus a continuous HFD on atherosclerosis progression, finding that the alternating diet significantly worsened the condition.
  • The study revealed that this worsening was linked to IL-1β production, which triggered inflammatory responses and increased neutrophil levels that contributed to plaque formation and exacerbated atherosclerosis, suggesting that targeting these pathways could reverse the effects.
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  • * Early intermittent feeding of mice on a high-cholesterol diet speeds up atherosclerosis by altering arterial macrophage behavior and gene expression associated with ASCVD.
  • * The Young Finns Study links early cholesterol exposure to increased carotid atherosclerotic plaque in adulthood, emphasizing the need for better hyperlipidaemia management early in life to prevent ASCVD.
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Influenza A virus (IAV) infection while primarily affecting the lungs, is often associated with cardiovascular complications. However, the mechanisms underlying this association are not fully understood. Here, we investigated the potential role of FBXL19, a member of the Skp1-Cullin-1-F-box family of E3 ubiquitin ligase, in IAV-induced cardiac inflammation.

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Pulmonary fibrosis is a fatal and chronic lung disease that is characterized by accumulation of thickened scar in the lungs and impairment of gas exchange. The cases with unknown etiology are referred as idiopathic pulmonary fibrosis (IPF). There are currently no effective therapeutics to cure the disease; thus, the investigation of the pathogenesis of IPF is of great importance.

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Background: Long-term disability after stroke is standardly assessed 3 months post-onset, using the modified Rankin Scale (mRS). The value of an early, day 4 mRS assessment for projecting the 3-month disability outcome has not been formally investigated.

Methods: In this cohort of patients with acute cerebral ischemia and intracranial hemorrhage, we analyzed day 4 and day 90 mRS assessments in the NIH Field Administration of Stroke Therapy- Magnesium (FAST-MAG) Phase 3 trial.

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  • * A high-fat diet (HFD) changes how Trp is processed in the body and can lead to inflammation, which might worsen heart problems.
  • * This study shows that controlling Tryptophan metabolism could help reduce gut inflammation and heart disease, leading to new treatment options.
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Boswellia carterii (BC) resins plants have a long historical background as a treatment for inflammation, as indicated by information originating from multiple countries. Twenty-seven diterpenoids have been identified in ethyl acetate and total methanol BC, comprising seventeen boscartins of the cembrane-type diterpenoids and ten boscartols of the prenylaromadendrane-type diterpenoids. Moreover, twenty-one known triterpenoids have also been found, encompassing nine tirucallane-type, six ursane-type, four oleanane-type, and two lupane-type.

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Background: The extent of ischemic injury in acute stroke is assessed in clinical practice using the Acute Stroke Prognosis Early CT Score (ASPECTS) rating system. However, current ASPECTS semi-quantitative topographic scales assess only the middle cerebral artery (MCA) (original ASPECTS) and posterior cerebral (PC-ASPECTS) territories. For treatment decision-making in patients with anterior cerebral artery (ACA) occlusions and internal carotid artery (ICA) occlusions with large ischemic cores, measures of all hemispheric regions are desirable.

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Background: The long isoform of the Wnk1 (with-no-lysine [K] kinase 1) is a ubiquitous serine/threonine kinase, but its role in vascular smooth muscle cells (VSMCs) pathophysiology remains unknown.

Methods: AngII (angiotensin II) was infused in to induce experimental aortic aneurysm. Mice carrying an allele were cross-bred with mice carrying a floxed allele to specifically investigate the functional role of Wnk1 in VSMCs.

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  • Autophagy is a vital cell process that maintains balance by recycling cell components, and it has a significant but complex role in cancer stem cells (CSCs) and stem cell therapy.
  • The study highlights the molecular mechanisms that regulate autophagy in the context of CSCs, emphasizing its dual role in both removing and maintaining these cells, alongside the challenges in understanding the related signaling pathways.
  • Targeting autophagy with synthetic and natural compounds shows potential in improving therapies for cancer and regenerative medicine, but there are hurdles like treatment resistance that need to be overcome for effective applications.
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  • Cystic fibrosis-related liver disease (CFLD) is worsened by inflammation from gut-derived stimuli due to defective CFTR, leading to liver pathology and increased morbidity in cystic fibrosis patients.
  • Studies on different mouse models (WT, CFTR-KO, and CFTR-KO-GC) revealed that gut dysbiosis and inflammation are present in CFTR-KO mice, while the gut-corrected mice showed no liver issues.
  • Treatment with nonabsorbable antibiotics improved gut permeability and liver inflammation in CFTR-KO mice, suggesting that targeting gut health could be a key therapeutic approach for CFLD.
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Thioredoxin-interacting protein (TXNIP) plays a critical role in regulation of cellular redox reactions and inflammatory responses by interacting with thioredoxin (TRX) or the inflammasome. The role of TXNIP in lung fibrosis and molecular regulation of its stability have not been well studied. Therefore, here we investigated the molecular regulation of TXNIP stability and its role in TGF-β1-mediated signaling in lung fibroblasts.

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Component-on-component impingement in total hip arthroplasty may lead to post-operative complications including dislocation. Despite numerous clinical studies focusing on reducing this risk, assessment methods remain limited to qualitative radiography, finite element analysis, and cadaver studies. There is a need for more precise measurements of impingement in the research setting.

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Neutralizing antibodies (NAbs) are elicited after infection and vaccination and have been well studied. However, their antibody-dependent cellular cytotoxicity (ADCC) functionality is still poorly characterized. Here, we investigated ADCC activity in convalescent sera from infected patients with wild-type (WT) severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) or omicron variant compared with three coronavirus disease 2019 (COVID-19) vaccine platforms and postvaccination breakthrough infection (BTI).

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NEWS IN FRENCH CANCER SCREENINGS. Find solutions to achieve the objectives of the French ten-year strategy against cancers is one of the challenges of the changes to come in the three French organized screening (OS) programs. We present an inventory of screenings and innovations that illustrates these issues and proposals to address them.

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Endothelial cell (EC) barrier disruption and inflammation are the pathological hallmarks of vascular disorders and acute infectious diseases and related conditions, including the coronavirus disease 2019 (COVID-19) and sepsis. Ubiquitination plays a critical role in regulating the stability, intracellular trafficking, and enzymatic activity of proteins and is reversed by deubiquitinating enzymes (DUBs). The role of DUBs in endothelial biology is largely unknown.

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Background: In light of several recent studies, there is evidence that the coronavirus disease 2019 (COVID-19) pandemic has caused various mental health concerns in the general population, as well as among healthcare workers (HCWs). The main aim of this study was to assess the psychological distress, burnout and structural empowerment status of HCWs during the COVID-19 outbreak, and to evaluate its predictors.

Methods: This multi-center, cross-sectional web-based questionnaire survey was conducted on HCWs during the outbreak of COVID-19 from August 2020 to January 2021.

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  • The study investigates the potential impact of metal debris from hip implants on brain health, analyzing 28 patients with long-term implants and 32 matched controls.
  • Researchers measured cobalt and chromium ion levels in blood samples and conducted MRI scans to assess brain structures and cognitive function, finding no significant differences between the groups.
  • The results indicate that metal ions from well-functioning hip implants do not significantly affect brain integrity or cognitive abilities over the long term.
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Background: Supporting children with autism spectrum disorder (ASD) and their parents is vital in improving their children's abilities and their parents' ability to care for them. Thus, parents' perceptions of and levels of satisfaction with the services provided for their children must be assessed.

Aim: This study aimed to understand parents' perceptions of and satisfaction with the speech-language services (SLS) provided for ASD children in different health facilities in Saudi Arabia.

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Background: Aging has been reported as a major risk factor for severe symptoms and higher mortality rates in COVID-19 patients. Molecular hallmarks such as epigenetic alterations and telomere attenuation reflect the biological process of aging. Epigenetic clocks have been shown to be valuable tools for measuring biological age in various tissues and samples.

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