Publications by authors named "Maalej A"

The widespread use of pesticides, particularly in combinations, has resulted in enhanced hazardous health effects. However, little is known about their molecular mechanism of interactions. The aim of this study was to assess the neurotoxicity effect of pesticides in mixtures by adopting a 3D in vitro developed neurospheroid model, followed by treatment by increased concentrations of pesticides for 24 h and analysis by a shotgun proteomic-based approach with high-resolution tandem mass spectrometry.

View Article and Find Full Text PDF

The aim of this study was to develop an innovative sourdough using dehydrated okra ( L.) pod flour and to use it in the production of bread. Three different flours (sun-dried S, freeze-dried F, oven-dried O) were individually mixed at 9% with wheat flour (Dough Yield 300) and fermented (N: 8.

View Article and Find Full Text PDF

Photic retinopathy (PR) is due to retinal phototoxicity, especially affecting the macula, resulting from exposure to sun, welding devices and lasers. It leads to oxidative damage to the retinal pigment epithelium (RPE) and the surrounding photoreceptors. Early recognition of this visual threatening condition, follow-up lesion evolution, and prevention of prolonged ocular exposure to lights is warranted.

View Article and Find Full Text PDF

Despite various plans to rationalize antibiotic use, antibiotic resistance in environmental bacteria is increasing due to the accumulation of antibiotic residues in the environment. This study aimed to test the ability of basidiomycete fungal strains to biotransform the antibiotic levofloxacin, a widely-used third-generation broad-spectrum fluoroquinolone, and to propose enzyme targets potentially involved in this biotransformation. The biotransformation process was performed using fungal strains.

View Article and Find Full Text PDF

Cogan's syndrome is a rare autoimmune inflammatory disease, characterized by interstitial keratitis and audio-vestibular signs. The syndrome was first described in 1945 by David G. Cogan.

View Article and Find Full Text PDF

Pesticides are increasingly used in combinations in crop protection, resulting in enhanced toxicities for various organisms. Although protein adductomics is challenging, it remains a powerful bioanalytical tool to check environmental exposure and characterize xenobiotic adducts as putative toxicity biomarkers with high accuracy, facilitated by recent advances in proteomic methodologies and a mass spectrometry high-throughput technique. The present study aims to predict the potential neurotoxicity effect of imidacloprid and λ-cyhalothrin insecticides on human neural cells.

View Article and Find Full Text PDF

High-grade gliomas represent the most common group of infiltrative primary brain tumors in adults associated with high invasiveness, agressivity, and resistance to therapy, which highlights the need to develop potent drugs with novel mechanisms of action. The aim of this study is to reveal changes in proteome profiles under stressful conditions to identify prognostic biomarkers and altered apoptogenic pathways involved in the anticancer action of human isocitrate dehydrogenase (IDH) mutant high-grade gliomas. Our protocol consists first of a 3D developing neurospheroid model and then treatment by a pesticide mixture at relevant concentrations.

View Article and Find Full Text PDF

Pesticides are widely used, resulting in continuing human exposure with potential health impacts. Some exposures related to agricultural works have been associated with neurological disorders. Since the 2000s, the hypothesis of the role of pesticides in the occurrence of central nervous system (CNS) tumors has been better documented in the literature.

View Article and Find Full Text PDF

Purpose: To evaluate circumpapillary vessel density (cpVD) in normal subjects, preperimetric glaucoma, and manifest glaucoma, assess the relationship between cpVD and both structural and functional parameters and compare the diagnostic accuracy of the structural and vascular measurements.

Methods: An analytical cross-sectional study of 153 eyes of 83 individuals divided into three groups: Normal subjects, preperimetric glaucoma, and manifest glaucoma. All individuals underwent standard automated perimetry, spectral-domain optical coherence tomography (SD-OCT), and OCT angiography (OCT-A) centered on the optic nerve.

View Article and Find Full Text PDF

The wastewater from hospitals, pharmaceutical industries and more generally human and animal dejections leads to environmental releases of antibiotics that cause severe problems for all living organisms. The aim of this study was to investigate the capacity of three fungal strains to biotransform the fluoroquinolone levofloxacin. The degradation processes were analyzed in solid and liquid media.

View Article and Find Full Text PDF

Background: Ocular blast injuries are defined as ocular damage caused by explosives. Within the military, they are considered work accidents resulting from military service, and they are therefore governed by the military disability pension system, which utilizes a specific scale.

Objectives: To study the clinical presentation and course of ocular blast injuries.

View Article and Find Full Text PDF

Background: Hypertension is the leading cause of morbi-mortality in our country. Thus, we conducted this national survey on hypertension to analyze the profile of the Tunisian hypertensive patient and to assess the level of blood pressure control.

Methods: Nature HTN is an observational multicentric survey, including hypertensive individuals and consulting their doctors during the period of the study.

View Article and Find Full Text PDF

The present work was performed to investigate the phenolic composition of L. distilled leaves (PDL) and examine its potential against certain key enzymes related to skin aging. High-pressure liquid chromatography coupled to mass spectrometry (HPLC-MS) and various separation procedures combined with nuclear magnetic resonance (NMR) and MS analysis were performed to isolate and identify compounds present in the ethyl acetate extract (EAE) of PDL.

View Article and Find Full Text PDF

Purpose: To describe, through anterior segment optical coherence tomography (AS-OCT) images, the different phases of epidemic keratoconjunctivitis (EKC) and show the impact of topical steroid on the course of this disease.

Methods: A prospective observational study included 38 eyes (28 patients) with a presumed EKC complicated by subepithelial infiltrates (SEIs) and treated with topical fluorometholone. Slit-lamp examinations and serial AS-OCT were performed on days 7, 14, 30, 90, 180, and 210.

View Article and Find Full Text PDF

Background: The three-phase extraction process of olive oil produces highly contaminated wastewater (OMW). The elimination of this toxic by-product is an important environmental issue that requires the development of an appropriate management solution. The cultivation of microalgae using OMW as growth medium was therefore studied using single (the culture medium was formed by 0% to 80% ultrafiltered olive mill wastewater (OMUF) or OMW added to BG11) and two-stage strategies (microalgae were firstly cultivated in the BG11 medium.

View Article and Find Full Text PDF

A halotolerant marine strain PHKT of Halomonas venusta was isolated from contaminated seawater as an efficient biosurfactant producer candidate, on low-value substrate (glycerol). The produced biosurfactants (Bios-PHKT) were characterized as lipopeptides molecules, belonging to surfactin and pumilacidin families, by using Thin Layer Chromatography (TLC), Fourier Transform Infrared Spectroscopy (FT-IR) and Tandem Mass Spectrometry (MALDI-TOF/MS-MS). Bios-PHKT has a critical micelle concentration (CMC) of 125 mg/L, and showed a high steadiness against a wide spectrum of salinity (0-120 g/L NaCl), temperature (4-121 °C) and pH (2-12), supporting its powerful tensioactive properties under various environmental conditions.

View Article and Find Full Text PDF

This study reports on the purification and characterization of a digestive α-amylase from blue crab () viscera designated Blue Crab Amylase (BCA). The enzyme was purified to homogeneity by ultrafiltration, Sephadex G-100 gel filtration and Sepharose mono Q anion exchange chromatography, with the final purification fold of 424.02, specific activity of 1390.

View Article and Find Full Text PDF

Introduction: This report describes a case of central retinal vein occlusion (CRVO) and cilioretinal artery occlusion (CLRAO) after hormonal treatment for induction of ovulation that was successfully treated with hyperbaric oxygen.

Case Report: A 48 year-old woman was admitted to our department for sudden blurred vision in her left eye. The patient had a history of 3-months hormonal treatment for induction of ovulation.

View Article and Find Full Text PDF

Purpose: To compare efficiency and tolerance between topical 0.5% cyclosporine A (CSA) and fluorometholone (FML) for subepithelial infiltrates (SEI) complicating epidemic keratoconjunctivitis.

Methods: We conducted a prospective double-blind randomized study involving 72 eyes with SEI.

View Article and Find Full Text PDF

Carotenoids have strong antioxidant activity as well as therapeutic value. Their production has been induced in algae under stressful culture conditions. However, the extreme culture conditions lead to the Programmed Cell Death (PCD) of algae, which affects their growth and productivity.

View Article and Find Full Text PDF