35,869 results match your criteria: "Tunisia ; ISSIG: Higher Institute of Industrial Systems[Affiliation]"

Background: Respiratory syncytial virus (RSV) is a common aetiological agent that causes respiratory infections, especially among infants. Identifying circulating RSV genotypes is an essential strategy for understanding the spread of the virus in a certain area. Sequencing the variable regions of the attachment glycoprotein (G) gene of RSV is a quick and direct approach for identifying the genotypes.

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DFT Investigation of the Stereoselectivity of the Lewis-Acid-Catalyzed Diels-Alder Reaction between 2,5-Dimethylfuran and Acrolein.

ACS Omega

January 2025

Laboratory of Theoretical Chemistry, Theoretical and Structural Physical Chemistry Unit, Namur Institute of Structured Matter (NISM), University of Namur, rue de Bruxelles, 61, B-5000 Namur, Belgium.

Density functional theory (DFT) has been enacted to study the Diels-Alder reaction between 2,5-dimethylfuran (2,5-DMF), a direct product of biomass transformation, and acrolein and to analyze its thermodynamics, kinetics, and mechanism when catalyzed by a Lewis acid (LA), in comparison to the uncatalyzed reaction. The uncatalyzed reaction occurs via a typical one-step asynchronous process, corresponding to a normal electron demand (NED) mechanism, where acrolein is an electrophile whereas 2,5-DMF is a nucleophile. The small endo selectivity in solvents of low dielectric constants is replaced by a small exo selectivity in solvents with larger dielectric constants, such as DMSO.

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Arginase plays a crucial role in the urea cycle; it also has immunosuppressive and pro-tumor effects. The present study aimed to assess the effects of arginase inhibition by thymoquinone (2-Isopropyl-5-methyl-1,4-benzoquinone), an active compound of Nigella sativa, on cell death in the MDA-MB-231 triple-negative breast tumor cell line. Cell viability assays, Western blot analysis, and flow cytometry analysis were used to characterize oxidative stress and cell death.

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Tuberculosis (TB) is a major health burden in Africa. Although TB is treatable, anti-TB drugs are associated with adverse drug reactions (ADRs), which are partly attributed to pharmacogenetic variation. The distribution of star alleles (haplotypes) influencing anti-TB drug metabolism is unknown in many African populations.

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Ethnopharmacological Relevance: Benign prostatic hyperplasia (BPH) is one of the most prominent diseases of the aged men urinary system. It is associated with cellular proliferation, hormonal imbalance, oxidative stress, inflammation and apoptosis. Traditionally, Thymelaea hirsuta (L.

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Flooding induces hypoxia in plant tissues, impacting various physiological and biochemical processes. This study investigates the adaptive response of the roots and nitrogen-fixing nodules of Medicago truncatula in symbiosis with Sinorhizobium meliloti under short-term hypoxia caused by flooding. Four-week-old plants were subjected to flooding for 1 to 4 days.

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Actinomycetes studies in Tunisia.

Res Microbiol

January 2025

Department of Convergence Study on the Ocean Science and Technology, Korea Maritime and Ocean University, Busan, 49112, South Korea. Electronic address:

Tunisia, located in North Africa, has a diverse topography along the Mediterranean Sea to the Sahara Desert. These environments encompass oases, rhizosphere soils, desert deposits, saline wetlands, offshore oilrigs, and ancient monument rocks. The country's varied environments have led to the isolation of a multitude of actinomycetes.

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Does Core Training Improve Agility Performance in Soccer Players With Groin Pain? A Randomized, Single-Blind Study.

Int J Sports Physiol Perform

January 2025

Research laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.

Context: Agility is crucial for soccer players, and core training can improve it. One study showed significant agility improvements after an intervention including core training for athletes with groin pain. However, it is unclear if these improvements resulted specifically from the core exercises or the entire program.

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Advances in polyhydroxyalkanoate (PHA) production from renewable waste materials using halophilic microorganisms: A comprehensive review.

Sci Total Environ

February 2025

Biotechnology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha 2713, Qatar. Electronic address:

Polyhydroxyalkanoates (PHAs) are biodegradable and biocompatible polymers that can replace conventional plastics in different sectors. However, PHA commercialization is hampered due to their high production cost resulting from the use of high purity substrates, their low conversion into PHAs by using conventional microbial chassis and the high downstream processing cost. Taking these challenges into account, researchers are focusing on the use of waste by-products as alternative low-cost feedstocks for fast-growing and contamination-resistant halophilic microorganisms (Bacteria, Archaea…).

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Infective endocarditis (IE) in children is a rare entity which presents a high rate of events during follow-up. Congenital heart disease, i particular ventricular septal defect (VSD), is the main predisposing condition to IE at those ages. The long-term risk of IE is of concern and whose follow-up can be complicated by a relapse of IE and reintervention.

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The discrepancy between donor organ availability and demand leads to a significant waiting-list dropout rate and mortality. Although quantitative tools such as the Donor Risk Index (DRI) help assess organ suitability, many potentially viable organs are still discarded due to the lack of universally accepted markers to predict post-transplant outcomes. Normothermic machine perfusion (NMP) offers a platform to assess viability before transplantation.

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Background: As one of the most common non-communicable diseases in Africa, Stroke ought to be dealt with properly with intensifying efforts to control its burden and to face obstacles in its management.

Methods And Results: In this follow-up study we reanalyzed stroke services and related obstacles in 17 African countries that were previously studied in 2021/22 in aspects related to manpower, acute stroke services, rehabilitation programs, number of stroke units/centers, telestroke services, awareness campaigns, and national and international stroke registries through a survey that was sent to stroke specialists and national stroke societies. Overall, there is an improvement in many fields yet many obstacles in the implementation of telestroke services, acute management, secondary prevention, post-discharge services, and follow-ups whether governmental, medical, or societal are prevalent.

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Objective: Electrical Impedance Tomography (EIT) is a non-invasive technique used for lung imaging. A significant challenge in EIT is reconstructing images of deeper thoracic regions due to the low sensitivity of boundary voltages to internal conductivity variations. The current injection pattern is decisive as it influences the current path, boundary voltages, and their sensitivity to tissue changes.

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Introduction: Type 2 diabetes (T2D) is a prevalent metabolic disorder linked to chronic inflammation and endothelial dysfunction, which contributes to the development of microvascular complications (MVCs) such as diabetic retinopathy (DR) and diabetic neuropathy (DN). Genetic factors, including variations in the ABO gene, may influence these complications. This study aimed to investigate the association between the ABO rs2073823 polymorphism and the risk of MVCs in patients with T2D, as well as its impact on inflammatory biomarkers, endothelial markers, and lipid profiles.

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The BES1/BZR1 transcriptional factor SlBES2 regulates photosynthetic apparatus in tomato fruit.

BMC Plant Biol

January 2025

Key Laboratory of Plant Hormones Regulation and Molecular Breeding of Chongqing, School of Life Sciences, Chongqing University, Chongqing, 401331, China.

Background: Fruit photosynthetic apparatus development comprises a series of biological processes which is essential in determining fruit development and quality formation. However, the understanding of the regulation of fruit photosynthetic apparatus development remains poor.

Results: In this study, we identified a transcriptional factor SlBES2, the closest homolog of BES1 and BZR1 in tomato BES1 family, is highly expressed in fruit at mature green (MG) stage and exhibited transcriptional inhibition activity.

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This article aims to provide a systematic review of the literature on animal biomass and biogas plants through an analysis of externalities and benefits in economic, social, and environmental terms. In recent years, the spread of biogas plants has played an important role, especially in rural areas, generating benefits not only for the individual farm but for entire communities, contributing to the reduction of energy poverty and, at the same time, promoting the production of energy and organic manure. In light of the findings, the study argues that: (a) more public subsidies are needed; (b) the deployment of an appropriate policy mix would encourage the spread of small and medium-sized plants, with a reduction in road transport; and (c) targeted and diversified investments are needed on a geographic-by-geographic basis.

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NEMS generated electromechanical frequency combs.

Microsyst Nanoeng

January 2025

Department of Systems Design Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.

This paper presents a novel technique for low-power generation of frequency combs (FC) over a wide frequency range. It leverages modal interactions between electrical and mechanical resonators in electrostatic NEMS operating in air to provide a simple architecture for FC generators. A biased voltage signal drives the electrical resonator at resonance which is set to match an integer submultiple of twice the mechanical resonator's resonance.

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Proportion, domains, and risk factors of cognitive impairment in systemic lupus erythematosus.

Lupus

January 2025

Internal Medicine Department, Habib Thameur Hospital, Faculty of Medicine of Tunis, Tunis El Manar University, Tunis, Tunisia.

Objective: Cognitive impairment (CI) in systemic lupus erythematosus (SLE) is quite common and is an important prognostic factor due to its severity. The aim of our study was to determine the proportion and type of CI in SLE and to identify associated risk factors.

Methods: We performed a cross-sectional study (January - March 2022).

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Superior mesenteric artery syndrome in a pediatric patient: A rare case report and literature review.

Int J Surg Case Rep

January 2025

General Surgery Department, Military Hospital of Tunis, Mont Fleury, 1008 Tunis, Tunisia; Faculty of Medicine of Tunis, 15, Djebel Lakhdhar Street, Bab Saadoun, 1007 Tunis, Tunisia.

Introduction And Importance: Superior mesenteric artery (SMA) syndrome, or aorto-mesenteric clamp syndrome, is a rare condition where the third portion of the duodenum is compressed between the aorta and the superior mesenteric artery. This syndrome often affects adolescents and young adults, with predisposing factors including significant weight loss, anatomical variations, and spinal deformities. Early diagnosis and intervention are critical for managing symptoms and preventing complications.

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Little is known about the effects of sodium-glucose co-transporter 2 inhibitors (SGLT2i) on atherosclerosis. We aimed to determine if a 90-day intake of Dapagliflozin could improve atherosclerosis biomarkers (namely endothelial function assessed by flow-mediated dilatation [FMD] and carotid intima-media thickness [CIMT]) in diabetic and non-diabetic acute coronary syndrome (ACS) patients when initiated in the early in-hospital phase. ATH-SGLT2i was a prospective, single-center, observational trial that included 113 SGLT2i naive patients who were admitted for ACS and who were prescribed Dapagliflozin at a fixed dose of 10 mg during their hospital stay for either type 2 diabetes or for heart failure.

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sp. nov., a novel endophytic bacterium with plant growth-promoting potential, isolated from root nodules of in Northwestern Algeria.

Int J Syst Evol Microbiol

January 2025

Dpartement de Biotechnologie, Laboratoire des Productions, Valorisations Vgtales et Microbiennes (LP2VM), Facult des Sciences de la Nature et de la Vie, B.P. 1505, El-Mnaour, Universit des Sciences et de la Technologie dOran Mohamed Boudiaf USTO-MB, Oran 31000, Algeria.

A thorough polyphasic taxonomic study, integrating genome-based taxonomic approaches, was carried out to characterize the RB5 strain isolated from root nodules of growing on the coastal dunes of Bousfer Beach (Oran, Algeria). The 16S rRNA gene sequence analysis revealed that strain RB5 had the highest similarity to LMG27940 (98.94%) and IzPS32d (98.

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The [4+2] Diels-Alder cycloaddition reaction between 2,5-DMF (1) and ethylene derivatives (2a-h) activated by electron-withdrawing groups has been studied at the density functional theory levels using a panoply of tools to unravel the reaction mechanisms. From the analysis of the reactivity indices, 2a-h behave as electrophiles while 1 as nucleophile, and the activation of the double bond of ethylene increases its electrophilicity, which is accompanied by an enhancement of the polarity of the reaction. The activation Gibbs free energy decreases linearly as a function of this increase of polarity, as estimated by the electrophilicity difference between the reactants.

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Introduction: Nemaline myopathy (NM), also known as Nemalinosis, is a rare congenital muscle disease with an incidence of 1 in 50000. It is characterized by nemaline rods in muscle fibers, leading to muscle weakness. We reported a case of NM revealed by cardiac involvement, and we highlighted the challenges in diagnosing this condition as well as its poor prognosis.

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Introduction: Immunoglobulin D (IgD) myeloma is a rare subtype often described as aggressive with advanced disease at diagnosis. Primary renal involvement is seen in scarce cases.

Observation: This case features a 55-year-old man with IgD lambda myeloma presenting severe renal failure at diagnosis.

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Background: COVID-19 lockdown measures have profoundly altered lifestyle habits, exposing individuals to significant health risks Aim: This study aims to assess the impact of quarantine measures in Tunisia, with a focus on examining changes in dietary habits, levels of physical activity, psychological patterns, and factors contributing to weight gain.

Methods: This is a cross-sectional study involving 1,016 participants and employed a mixed-methods approach to gather data on dietary habits, physical activity levels, and psychological indicators. Statistical analyses, including binary logistic regression, were conducted to identify independent risk factors associated with weight gain during the quarantine period.

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