118 results match your criteria: "Universite Saint-Joseph de Beyrouth[Affiliation]"

Exhausted Grape Seed Residues as a Valuable Source of Antioxidant Molecules for the Formulation of Biocompatible Cosmetic Scrubs.

Molecules

June 2023

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut 1104 2020, Lebanon.

Grape seed of Obeidi, a white Lebanese autochthonous variety, was previously tested in different studies as a valuable source of bioactive molecules such as polyphenols, oils, and proteins by means of extraction procedures for the development of cosmetic and therapeutic products. However, an un-valorized, exhausted grape seed residue remains as "secondary waste" after the extraction processes. In this study, the exhausted seeds have been further exploited to produce cosmetic scrubs capable of releasing antioxidant molecules during the exfoliation process, in accordance with the principles of the circular economy and going toward a zero-waste process.

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Single, Subsequent, or Simultaneous Treatments to Mitigate Mycotoxins in Solid Foods and Feeds: A Critical Review.

Foods

October 2022

Centre d'Analyses et de Recherche (CAR), Unité de Recherche Technologies et Valorisation Agro-Alimentaire (UR-TVA), Faculté des Sciences, Campus des Sciences et Technologies, Université Saint-Joseph de Beyrouth, Mar Roukos, Matn 1104-2020, Lebanon.

Mycotoxins in solid foods and feeds jeopardize the public health of humans and animals and cause food security issues. The inefficacy of most preventive measures to control the production of fungi in foods and feeds during the pre-harvest and post-harvest stages incited interest in the mitigation of these mycotoxins that can be conducted by the application of various chemical, physical, and/or biological treatments. These treatments are implemented separately or through a combination of two or more treatments simultaneously or subsequently.

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Chemical Composition and Biological Activities of Stems Extracts Recovered Using , an Innovative Infrared Technology, Compared to Water Bath and Ultrasound.

Life (Basel)

May 2023

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, CST-Mar Roukos-Dekwaneh, Riad El Solh, P.O. Box 1514, Beirut 1107 2050, Lebanon.

Extraction of polyphenols from stems was conducted using ultrasound and infrared techniques, and compared to the conventional water bath method. Response surface methodology was used to analyse the effect of time, temperature, and ethanol percentage, as well as to optimize the three extraction methods. The highest phenolic content (81 mg GAE/g DM) and antioxidant activity (76% DPPH inhibition) were recorded with the extract obtained under the optimal conditions: 55 °C, 127 min, 48% (/) ethanol.

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Bacillus thuringiensis israelensis is largely regarded as the most selective, safe and ecofriendly biopesticide used for the control of insect vectors of human diseases. Bti enthomopathogenicity relies on the Cry and Cyt δ-endotoxins, produced as crystalline inclusions during sporulation. Insecticidal selectivity of Bti is mainly ascribed to the binding of the Cry toxins to receptors in the gut of target insects.

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Knowledge, Attitude, and Practices of the General Population toward the Old-New Outbreak of Cholera in a Developing Country.

Trop Med Infect Dis

April 2023

INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon.

In October 2022, the first case of cholera since 1993 was recorded in Lebanon. This study aimed to develop and validate a tool to explore the knowledge, attitudes, and practices (KAP) toward cholera infection and its prevention among the general population in Lebanon and identify the associated factors related to the KAP assessment to guide prevention and awareness strategies. The nation's already precarious healthcare system might become overwhelmed by the response to the cholera outbreak.

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Peanut Allergenicity: An Insight into Its Mitigation Using Thermomechanical Processing.

Foods

March 2023

Department of Biology, Faculty of Arts and Sciences, University of Balamand, P.O. Box 100, Tripoli 1300, Lebanon.

Peanuts are the seeds of a legume crop grown for nuts and oil production. Peanut allergy has gained significant attention as a public health issue due to its increasing prevalence, high rate of sensitization, severity of the corresponding allergic symptoms, cross-reactivity with other food allergens, and lifelong persistence. Given the importance of peanuts in several sectors, and taking into consideration the criticality of their high allergic potential, strategies aiming at mitigating their allergenicity are urgently needed.

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[Correlation of Vertical Dentoalveolar Heights with Palatal Plane Inclination in Adults with Different Vertical Facial Patterns].

Orthod Fr

December 2022

Département d'orthodontie, Laboratoire de recherche cranio-faciale, Faculté de médecine dentaire, Université Saint Joseph de Beyrouth, rue de Damas, B.P. 11-5076 Riad El Solh, Beyrouth, Liban.

Introduction: Various studies showed inconsistent and different results regarding the correlation between open bites and palate planes whether normal or abnormal. This study had for objective to investigate the correlation between dentoalveolar heights and palatal plane inclination in different vertical facial patterns.

Materials And Methods: 120 lateral cephalometric radiographs (60 females and 60 males) were selected from the archives of the Faculty of Dentistry, Beirut Arab University.

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Objective: The increasing number of COVID-19 cases, as well as the overwhelming workload, constitutes a serious occupational health threat to Emergency Room (ER) nurses working on the frontlines. In Lebanon, where unstable socio-economic conditions reign, the Covid-19 outbreak was added to the plethora of daily challenges faced by healthcare workers. The study's objective is to explore how Lebanese ER nurses perceived their duty on the frontlines amid the Covid-19 pandemic.

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Poultry wastes are rich in organic matter, allowing their use as substrates for biogas production by anaerobic digestion (AD). The major difficulty in the anaerobic digestion of this protein-rich waste is ammonia inhibition. Different results of biochemical methane potential (BMP) were obtained after the mesophilic anaerobic digestion of different avian waste in batch mode.

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Plant extracts may represent an ecofriendly alternative to chemical fungicides to limit aflatoxin B1 (AFB1) contamination of foods and feeds. Mate (), rosemary () and green tea () are well known for their beneficial properties, which are mainly related to their richness in bioactive phenolic compounds. AFB1 production is inhibited, with varying efficiency, by acetone/water extracts from these three plants.

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Phenolic Compounds Recovery from Blood Orange Peels Using a Novel Green Infrared Technology , and Their Effect on the Inhibition of Proliferation and Aflatoxin B1 Production.

Molecules

November 2022

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut 1104 2020, Lebanon.

The intensification of total phenolic compound (TPC) extraction from blood orange peels was optimized using a novel green infrared-assisted extraction technique (IRAE, ) and compared to the conventional extraction using a water bath (WB). Response surface methodology (RSM) allowed for the optimization of ethanol concentration (E), time (t), and temperature (T) in terms of extracted TPC and their antiradical activity, for both WB extraction and IRAE. Using WB extraction, the multiple response optimums as obtained after 4 h at 73 °C and using 79% ethanol/water were 1.

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Purpose: This commentary describes a multi-national project which addresses gaps in the design and delivery of health and education services in Arabic-speaking countries in relation to early language development, with a focus on Egypt, Jordan, Lebanon and the Palestinian Territories. This includes: (1) co-production with early years professionals and NGOs of approaches to support early language development; (2) development and standardisation of tools to identify monolingual and multilingual Arabic-speaking children at risk of poor language development; and (3) examination of language development in refugee communities.

Result: The importance of inter-professional partnership and the inclusion of families in planning support for oral language development is highlighted.

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Developing a national pharmaceutical research strategy in Lebanon: opportunities to bridge the gaps and reach the goals.

J Pharm Policy Pract

November 2022

INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut, Lebanon.

Pharmaceutical research can be structured into clear national strategies that optimize patient health and foster innovation. The objectives of this document are to assess the need for a national pharmaceutical research strategy based on the current situation in Lebanon, to identify the strengths and weaknesses of pharmaceutical research in Lebanon, and to suggest a pharmaceutical research strategy for Lebanon, including goals and objectives. In Lebanon, in the absence of a national health research policy, pharmaceutical research is conducted in academia or hospitals, although projects are the result of personal or team initiatives that should be organized to better serve the needs of the country.

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Multi-Step Biomass Fractionation of Grape Seeds from Pomace, a Zero-Waste Approach.

Plants (Basel)

October 2022

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Riad El Solh, P.O. Box 17-5208, Beirut 1104 2020, Lebanon.

Grape seeds are the wineries' main by-products, and their disposal causes ecological and environmental problems. In this study seeds from the pomace waste of autochthonous grape varieties from Lebanon, Obeidi (white variety) and Asswad Karech (red variety) were used for a multi-step biomass fractionation. For the first step, a lipid extraction was performed, and the obtained yield was 12.

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Background: Inflammatory bowel disease (IBD) constitutes a substantial risk factor for colorectal cancer. Connexin 43 (Cx43) is a protein that forms gap junction (GJ) complexes involved in intercellular communication, and its expression is altered under pathological conditions, such as IBD and cancer. Recent studies have implicated epigenetic processes modulating DNA methylation in the pathogenesis of diverse inflammatory and malignant diseases.

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Intensification of Polyphenols Extraction from Leaves Using and Evaluation of Antibiofilm and Antibacterial Activities.

Plants (Basel)

September 2022

Research Laboratory of Microbiology (RLM), Department of Life and Earth Sciences, Faculty of Sciences I, Lebanese University, Hadat Campus, P.O. Box 5, Beirut 1683, Lebanon.

(1) Background: is a plant medicinally valued, and used in pharmacopeia to treat various diseases. No previous studies have been reported on leaf extracts using an IR-assisted technique; thus, this study aimed to intensify polyphenol extraction using , comparing it to the conventional water bath (WB) method. (2) Methods: Optimization of polyphenol extraction from leaves was conducted using Response Surface Methodology.

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Lactobacillus rhamnosus and Staphylococcus epidermidis in gut microbiota: in vitro antimicrobial resistance.

AMB Express

October 2022

Centre d'Analyses et de Recherche (CAR), Unité de Recherche TVA/Résistance aux Antibiotiques et Impact Industriel (RAII), Faculté des Sciences, Université Saint-Joseph de Beyrouth, Campus des sciences et technologies, Mar Roukos, Matn, Lebanon.

The gastrointestinal tract is one of the most complex microbiological niches containing beneficial and non-pathogenic bacterial strains of which some may evolve into virulent under specific conditions. Lactobacillus rhamnosus GG is of the most known beneficial species with an ability to protect the intestine as opposed to Staphylococcus epidermidis 444 which causes serious health risks due to its high antimicrobial resistance. This study investigates first the survival and coexistence ability of L.

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Optimization of Polyphenols' Recovery from Purple Corn Cobs Assisted by Infrared Technology and Use of Extracted Anthocyanins as a Natural Colorant in Pickled Turnip.

Molecules

August 2022

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon.

An ecofriendly extraction technology using infrared (IR) irradiation was applied to purple corn cobs to enhance polyphenol recovery for the first time. The IR extraction efficiency was compared to that of the water bath (WB) method. Response surface methodology (RSM) using a central composite design was conducted to determine the effect of the experimental conditions (extraction time and treatment temperature) and their interactions on the total polyphenol and anthocyanin yields.

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[Prevalence of benzodiazepine use and dependence in Lebanon].

Encephale

April 2023

Université Saint Joseph de Beyrouth, Liban; Faculté de médecine, université Saint-Joseph, rue de Damas, BP 11-5076 Beyrouth, Liban. Electronic address:

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Multi-matrix biomonitoring approach to assess exposure to metals and trace elements in the Lebanese population and associations with drinking water consumption.

Environ Res

November 2022

Département de Santé Environnementale et Santé Au Travail, École de Santé Publique, Université de Montréal, 2375 Chemin de La Cote-Sainte-Catherine, Montréal, QC H3T 1A8, Canada; Centre de Recherche en Santé Publique (CReSP), Université de Montréal, 7101, Avenue Du Parc, Montréal, QC H3N 1X7, Canada; Chaire d'analyse et de gestion des risques toxicologiques, Université de Montréal, 2900, Édouard-Montpetit, Montréal, QC, H3T 1J4, Canada. Electronic address:

This study is the first attempt to assess exposure to metals and trace elements in subgroups of the Lebanese population using a multi-matrix biomonitoring approach. Concentrations of 11 metals and trace elements (aluminum (Al), arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), selenium (Se), uranium (U), zinc (Zn)) were measured in urine, hair and toenails. Biological levels were compared according to age, sex, smoking status, socioeconomic status, geographical area and drinking water source.

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Stability and Antioxidant Activity of Hydro-Glyceric Extracts Obtained from Different Grape Seed Varieties Incorporated in Cosmetic Creams.

Antioxidants (Basel)

July 2022

Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisations Agro-Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, P.O. Box 17-5208, Beirut 1104 2020, Lebanon.

Grape seeds are agro-industrial by-products, which if improperly managed, may be responsible for socioeconomic and environmental problems. Nevertheless, it is possible to effectively valorize them by means of extraction of the bioactive compounds, especially the antioxidant phenolic molecules, using a safe, green, and environmentally-friendly extractive medium (i.e.

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Role of Fc Core Fucosylation in the Effector Function of IgG1 Antibodies.

Front Immunol

July 2022

Center of Cellular Therapy "G. Lanzani", Division of Hematology, Azienda Socio Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy.

Article Synopsis
  • * Afucosylation, or the absence of fucose, has been linked to improved efficacy of therapeutic monoclonal antibodies (mAbs), with several already approved for treating cancer and inflammatory diseases.
  • * IgG Fc core fucosylation occurs naturally during the B-cell immune response, and variations in fucose levels are associated with disease severity in infections like SARS-CoV-2 and Dengue, highlighting its clinical relevance.
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In Europe, amatoxin-containing mushrooms are responsible for most of the deadly poisonings caused by macrofungi. The present work presents a multidisciplinary revision of the European species of sect. based on morphology, phylogeny, epidemiology, and biochemistry of amatoxins and phallotoxins.

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During this last decade, adoptive transfer of T lymphocytes genetically modified to express chimeric antigen receptors (CARs) emerged as a valuable therapeutic strategy in hematological cancers. However, this immunotherapy has demonstrated limited efficacy in solid tumors. The main obstacle encountered by CAR-T cells in solid malignancies is the immunosuppressive tumor microenvironment (TME).

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Reactive oxygen species (ROS) release seed dormancy through an unknown mechanism. We used different seed dormancy-breaking treatments to decipher the dynamics and localization of ROS production during seed germination. We studied the involvement of ROS in the breaking of Arabidopsis seed dormancy by cold stratification, gibberellic acid (GA ) and light.

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