Publications by authors named "Zitouni Karima"

Background: The role of antioxidant status on microvascular blood flow and glomerular filtration (eGFR) in patients with type 2 diabetes and hypertension whose risk of progressive renal disease varies by ethnicity is unknown.

Methods: Adult, non-Caucasian (n = 101) and Caucasian (n = 69) patients with type 2 diabetes, hypertension and/or microalbuminuria and an eGFR > 45 mL/min/1.73 m were randomised to receive 400 IU vitamin E and/or 20 μg selenium daily or matching placebo.

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Introduction: Langerhans cell histiocytosis is a rare disease. When it occurs in the cranium/facial bones, the mandibular location is the most frequent.

Presentation Of Case: A 31 years-old man was referred to our department for a mandibular chronic discomfort during an acute exacerbation, a pathologic mandibular fracture.

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Introduction: Congenital hypoplasia of the depressor anguli oris muscle is a rare mimic disorder depicted by a lower lip asymmetry apparent when laughing or crying.

Presentation Of Case: A 10-year-old boy consulted our department for an asymmetry when opening his mouth. According to the family, this asymmetry was present since birth.

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Women with type 2 diabetes (T2DM) have an increased susceptibility of developing cardio-renal disease compared to men, the reasons and the mechanisms of this vulnerability are unclear. Since oxidative stress plays a key role in the development of cardio-renal disease, we investigated the relationship between sex, plasma antioxidants status (glutathione peroxidase (GPx-3 activity), vitamin E and selenium), and adiposity in patients with T2DM at high risk of cardio-renal disease. Women compared to men had higher GPx-3 activity ( = 0.

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Context: Oxidative stress is implicated in the development of vascular disease and is associated with an upregulation of vascular endothelial growth factor (VEGF), which is pathogenetically linked to the microvascular complications of diabetes. Patients of African origin have an increased susceptibility to microvascular kidney disease compared with white patients; the reasons and mechanisms that contribute to this vulnerability are unclear.

Objectives: To investigate whether there are ethnic differences in lipopolysaccharide-induced monocyte VEGF production in whole blood cell cultures.

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Diabetes is a leading cause of chronic kidney disease (CKD) in the developed world. Promoters of the progression of kidney disease include the traditional profile of cardiovascular risk factors. However, the development of CKD and vulnerability to end-stage renal disease (ESRD) is highly variable.

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Background: There are marked ethnic differences in the susceptibility to the long-term diabetic vascular complications including sensory neuropathy. The vascular endothelial growth factor (VEGF) +405 (C/G) and -460 (T/C) polymorphisms are associated with retinopathy and possibly with nephropathy, however no information is available on their relationship with peripheral neuropathy. Therefore, we examined the prevalence of these VEGF genotypes in a multi-ethnic cohort of patients with diabetes and their relationship with evident peripheral diabetic neuropathy.

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Background: Recent data suggest that the higher risk of end-stage renal disease in women compared with men is associated with waist circumference. We investigated whether vascular stiffness which is linked to visceral fat accumulation is gender specific and associated with a loss in renal function.

Methods: We studied 166 patients with type 2 diabetes at high risk of progressive renal disease.

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Background: Diabetes is the western world's leading cause of end-stage renal disease. Glucose-dependent, oxidative stress is linked to the development of renal inflammation and sclerosis, which, in animal models of diabetes, can be prevented by anti-oxidative treatment. Patients of non-Caucasian heritage have low activity of the selenoprotein, antioxidant enzyme, glutathione peroxidase (GPx) and its co-factor vitamin E, which may be linked to their increased propensity to developing end-stage renal disease.

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Background: Hypertension is a major risk factor for the long-term complications of diabetes. Mobile, self-measurement of blood pressure is emerging as a method to manage blood pressure in general, but its impact in patients with diabetes is unclear.

Methods: We randomized 137 patients with diabetes and hypertension to either mobile telemonitoring (n = 72) or usual care (n = 65).

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Background: Vascular malformations are heterogenous angiodysplasias.

Aim: The aim of this work is to study the epidemiological and clinical features of venous malformations (VM) as well as their multidisciplinary management.

Methods: It is a retrospective study of patients having simple VM, seen at the multidisciplinary consultation of angiodysplasias of our hospital, over a 10 year period.

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We conducted a randomized controlled trial using mobile health technology in an ethnically diverse sample of 137 patients with complicated diabetes. Patients in the intervention group (n = 72) were trained to measure their blood glucose with a sensor which transmitted the readings to a mobile phone via a Bluetooth wireless link. Clinicians were then able to examine and respond to the readings which were viewed with a web-based application.

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Objective: We compared the renal and systemic vascular (renovascular) response to a reduction of bioavailable nitric oxide (NO) in type 2 diabetic patients without nephropathy and of African and Caucasian heritage.

Research Design And Methods: Under euglycemic conditions, renal blood flow was determined by a constant infusion of paraminohippurate and changes in blood pressure and renal vascular resistance estimated before and after an infusion of L-Ng-monomethyl-L-arginine.

Results: In the African-heritage group, there was a significant fall in renal blood flow (Delta-46.

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Background: Arteriovenous malformation (AVM) are vascular anomalies that may threaten functional and vital prognosis. The aim of this study was to assess the managment of Arteriovenous malformation

Methods: It is a retrospective study about 54 patients, having AVM, collected over a 7-year period.

Results: Sex ratio MJF was 1.

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Introduction: The mandible is an infrequent localisation of primary osseous non-Hodgkin's lymphomas. Few cases of mandibular non-Hodgkin's lymphomas (NHL) have been reported.

Case Report: A rare condition of primary malignant non-Hodgkin's lymphoma of the mandible in 53-year-old man, was reported at the Department of Maxillofacial and Plastic Surgery in Charles Nicolle Hospital (Tunis, Tunisia).

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Infantile cutaneous hemangioma is a benign vascular tumour present at 10% of the infants. It forms part of the group of the vascular tumours in the classification of international society for vascular anomalies (ISSVA). Usual surgical attitude is abstention and surgery is proposed only in order to treat sequelae.

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Amelioration of albuminuria may be related to specific constellations of risk factors including race and dyslipidaemia. Circulating cholesterol could mitigate the beneficial effect of antihypertensive therapy. We assessed whether cholesterol affected the remission of urinary albumin in patients with type 2 diabetes of white, Caucasian and non-white origin.

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Primary mucinous carcinoma of the skin is a rare sweat-gland neoplasm with a high recurrence rate. We report a new case of a primary recurrent mucinous carcinoma of the face in a 59-year-old man. Histopathologic examination of the neoplasm showed epithelial islands floating in mucoid material compartmentalized by fibrous septa.

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Embolisation of head and neck hypervascular tumours and arterioveinous malformations (AVMs) is now a well-established therapeutic procedure. The purpose of this study was to analyse the technique and to evaluate the safety and value of preoperative embolization of hypervascular lesions. We retrospectively reviewed the records of 5 patients, agged between 14 and 47 years, with hypervascular tumours and AVMs in the head and neck.

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Objective: Lipid hydroperoxide, a marker of oxidative stress, is linked to the development of nephropathy and is reportedly higher in patients of African origin compared with Caucasians. This may be relevant to race-specific differences in susceptibility to nephropathy. We investigated whether alterations in antioxidant enzyme activity could account for this biochemical phenotype and examined the relationship with conventional markers of renal disease.

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Background: End-stage renal disease caused by diabetes disproportionately affects patients of African origin. The biological mechanism(s) for this observation is unclear. Emerging data from cross-sectional studies suggest that increased oxidative stress and the cytokine, transforming growth factor beta(1), are associated with this phenomenon.

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