Publications by authors named "Khaled Zeghal"

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  • Lancehead snakes (Bothrops) cause 90% of snakebites in Latin America, prompting a study on the effects of B. atrox venom in male and female mice.
  • The research found that male mice exhibited a lower lethal dose (LD) and more severe physical symptoms from the venom compared to females, particularly via the intraperitoneal injection route.
  • Hematological changes, including a significant drop in total leukocyte levels, were more pronounced in males, indicating a greater susceptibility to B. atrox venom and highlighting the need to consider sex differences in venom studies.
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  • The research investigates the chemical composition and health benefits of a cactus family plant, focusing on its antioxidant and anti-inflammatory properties.
  • The study identifies significant levels of phenolic compounds, with methods like HPLC revealing key compounds such as luteolin and catechin, while GC detects prevalent fatty acids.
  • Results indicate that the methanol extract shows promising anti-inflammatory activity and potential medicinal applications, supported by computational modeling of its molecular interactions.
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This study aims to evaluate markers of oxidative stress in Tunisian asthmatic patients and investigate whether their markers are correlated with uncontrolled asthma. This prospective cohort study was conducted on 48 healthy subjects and 60 patients with asthma (34 patients with controlled asthma and 26 patients with uncontrolled asthma). The levels of malondialdehyde (MDA), advanced oxidation protein products (AOPP), and glutathione (GSH), as well as the activities of glutathione peroxidase (GPx) and superoxide dismutase (SOD), were estimated in plasma by spectrophotometry.

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Introduction: Multiple drug hypersensitivity (MDHS) is defined as confirmed drug hypersensitivity (DHS) to 2 or more drugs that are not chemically related. The objective of our study is to describe the cases of MDHS with antibiotics notified to the regional pharmacovigilance service (SRPV) of Sfax (Tunisia).

Methods: Our study is of a descriptive cross-sectional type, focusing on patients who consulted at the SRPV in Sfax during the period between 2013 and 2020 and who presented at least two episodes of DHS occurring at different times (at least one month apart).

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Introduction: The term multiple drug intolerance syndrome is used for patients who express adverse drug reactions to three or more drugs without a known immunological mechanism. It is a distinct clinical entity, different from cross-reactivity. The symptoms can range from a benign rash to life threatening syndromes like drug reaction with eosinophilia and systemic symptoms.

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Background And Purpose: Chronic exposure to potassium bromate (KBrO), a toxic halogen in the environment, has become a global problem of public health. The current study aims to elucidate for the first time the effect of Urtica dioica (UD) on behavioural changes, oxidative stress, and histopathological changes induced by KBrO in the cerebellum, kidney, liver and other organs of adult rats.

Study Design And Methods: The rats were divided into four groups: group 1 served as a control received physiological serum, Group 2 received KBrO (2 g/L of drinking water), group 3 received KBrO and Urtica dioica (100 mg/kg), and group 4 received KBrO and Urtica dioica (400 mg/kg).

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Aim: Hyperuricemia is defined by the European Rheumatology Society as a uric acid level greater than 6 mg/dl (60 mg/l or 360 μmol/l). Our goal was to evaluate the hypouricemic effect of nettle. For this reason, we have first of all try to create an hyperuricemic animal model which is very suitable because at the level of literature there is not an exact model, there are many models and our objective is to set an adequate model.

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Background: The P-glycoprotein (P-gp) is one of the mechanisms of Imatinib (IM) resistance in chronic myeloid leukemia (CML). P-gp has been identified as an efflux pump involved in releasing of IM outside CML cells. To date, the P-gp involvement in the IM resistance development was not completely understood.

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A high-fat diet (HFD) promotes oxidative stress, which contributes to the development of kidney dysfunction. We examined the protective effects of an ethanol extract of artichoke leaves (EEA) compared to Atorvastatin (ATOR) in the kidney of Wistar rats fed a high-fat diet. The experimental animals were divided into five groups: control (Cont), HFD, HFD treated with EEA (200 mg/kg), HFD treated with EEA (400 mg/kg), and HFD treated with ATOR.

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The polysaccharide preparation from Pimpinella anisum seeds (PAP) was isolated and characterized to evaluate its laser burn wound-healing and anti-inflammatory activities in mice. The structure characterization of PAP by Infra-red spectrometry (IR), Nuclear magnetic resonance (NMR), Gas chromatogram-Mass spectrometer (GC-MS) and colorimetric methods revealed an optimum yield of 8.84%, a high quantity of carbohydrate (64.

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Article Synopsis
  • The study evaluated oxidative stress in chronic myeloid leukemia (CML) patients treated with imatinib (IM) compared to controls, and further analyzed differences based on IM resistance.
  • The research involved 40 CML patients (26 of whom were IM-resistant) and 34 controls, measuring various oxidant and antioxidant markers using spectrophotometric methods.
  • Results indicated higher levels of malondialdehyde (MDA) and advanced oxidation protein products (AOPP) in CML patients, with IM-resistant patients showing even greater oxidative stress and altered antioxidant activity, highlighting an adverse oxidative profile linked to treatment resistance.
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Obesity plays a pivotal role in the insulin resistance disease, which is related to hypertension, hyperlipidemia, type 2 diabetes mellitus, and an increased risk of cardiovascular disease. The purpose of the present study was done to evaluate the effect of artichoke leaves extract (ALE) in the high-fat diet (HFD)-induced cellular obesity and cardiac damage in Wistar rats. Body and organ weights, serum lipid profile, cardiac markers, and antioxidants enzymes were measured.

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L. (Artichoke) has been used for the treatment of metabolic disorders. The purpose of the present study was to investigate the hepatoprotective effect of leaves extract against a high fat diet (HFD) induced rats.

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Background: Natural products, whether pure compounds or standardized plant extracts, offer unlimited opportunities for other drug sources due to the unequaled availability of chemical diversity. Stinging Nettle (Urtica dioica) is a unique herbaceous perennial flowering plant with stinging hairs. The leaf extract of nettle was one of the herbal remedies which the experimental, clinical and trials have complemented each other.

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This study was performed to investigate the protective effect of combined use of Vitamins E and C on colistin-induced tubular damage in rat. Animals were treated with sterile saline, colistin methanesulfonate (CMS), CMS + Vitamin E + Vitamin C, and Vitamin E + vitamin C, respectively, for seven days. Thereafter, animals were sacrificed and the urine N-acetyl-b-D-glucosaminidase (NAG) and gamma-glutamyl transferase (GGT) levels, plasma level of creatinine (Cr), vitamin E and vitamin C, and renal tissue levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx), as well as renal histology were performed.

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Background: Methotrexate (MTX) is a key component of acute lymphoblastic leukemia (ALL) therapy, but it is associated with serious toxicities in a considerable number of patients.

Objectives: The aim of the current study was to determine which variables were associated with MTX toxicity in children, adolescents and young adults with ALL.

Material And Methods: In this prospective study, 35 patients with newly diagnosed ALL, treated according to the 58951 European Organization for Research and Treatment of Cancer - Children's Leukemia Group (EORTC-CLG) protocol, were prospectively enrolled.

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Objective: The current study aimed to elucidate the effect of vanillin on behavioral changes, oxidative stress, and histopathological changes induced by potassium bromate (KBrO3), an environmental pollutant, in the cerebellum of adult mice.

Methods: The animals were divided into four groups: group 1 served as a control, group 2 received KBrO3, group 3 received KBrO3 and vanillin, and group 4 received only vanillin. We then measured behavioral changes, oxidative stress, and molecular and histological changes in the cerebellum.

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This study was carried out to evaluate spontaneous renal regeneration after stopping colistin methanesulfonate (CMS), which induces tubular damage, and the curative effect of Vitamin E (vit E) in rats. Animals were given the following: sterile saline (n = 6), 300,000 IU/kg/ day of CMS (n = 24), or 450,000 IU/kg/day of CMS (n = 24) for seven days. Each CMS group was subdivided into four subgroups (n = 6) and sacrificed as follows: (i) 12 h after stopping CMS, (ii) two weeks after stopping CMS, (iii) two weeks after stopping treatment with vit E, and (iv) two weeks after stopping treatment with olive oil.

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Context: Sepsis is the manifestation of the immune and inflammatory responses to infection that may ultimately result in multiorgan failure. Many substances are involved in myocardial dysfunction in sepsis, including hydrogen peroxide.

Objective: This study evaluates the protective activity of the red alga Alsidium corallinum against hydrogen peroxide (HO)-induced toxicity in H9c2 cardiomyocytes.

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The present study was aimed to evaluate the analgesic properties of Urtica dioica (UD) and to profile phytochemicals by gas chromatography-mass spectrometry (GC-MS). The ethanolic extracts were prepared by maceration method and extraction using rotary evaporator. The analgesic activity was analysed by hot plate method, formalin test, acetic acid-induced writhing test and the tail-flick test with different doses of the ethanolic extract.

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