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Ben Mansour R, Bouassida S, Ben Ariba Y, Mekki S. Kyste mésothelial. Nephrol Ther 2022. [DOI: 10.1016/j.nephro.2022.07.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Khedhiri A, Ben Mansour R, Boudawara M, Aydi K, Benabdallah R, Abdennadher F. POS-587 EFFECT OF ZINC AND VITAMIN C SUPPLEMENTATION ON OXIDATIVE STRESS IN HEMODIALYSIS AND RELATIONSHIP WITH INFECTIONS: A STUDY OF 46 PATIENTS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Kedechi S, Zribi N, Louati N, Menif H, Sellami A, Lassoued S, Ben Mansour R, Keskes L, Rebai T, Chakroun N. Antioxidant effect of hydroxytyrosol on human sperm quality during in vitro incubation. Andrologia 2016; 49. [PMID: 27135983 DOI: 10.1111/and.12595] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2016] [Indexed: 01/05/2023] Open
Abstract
The aim of the study was to evaluate the antioxidant potential of hydroxytyrosol (HT) on human sperm quality during incubation in vitro. Semen samples collected from men attending the Laboratory of Histology-Embryology of Sfax Faculty of Medicine (Tunisia) for infertility investigations were evaluated for initial sperm parameters. Only normal selected ejaculates (n = 15) were centrifuged and incubated further with or without HT (200ug ml-1 ) at room temperature for 45 min. After incubation, sperm motility and viability, DNA oxidation and reactive oxygen species (ROS) production were assessed. The results showed that centrifugation significantly influenced sperm motility and viability. The supplementation of HT in incubating media improved (P = 0.01) significantly sperm viability and decreased sperm DNA oxidation (P < 0.001) and ROS levels (P = 0.03) following centrifugation. It can be concluded that supplementation of HT might be helpful to maintain the human spermatozoon after centrifugation.
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Affiliation(s)
- S Kedechi
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia
| | - N Zribi
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia.,Laboratory of Human Molecular Genetics, Medicine Faculty of Sfax, Sfax, Tunisia
| | - N Louati
- Regional Center of Blood Transfusion of Sfax, Sfax, Tunisia
| | - H Menif
- Regional Center of Blood Transfusion of Sfax, Sfax, Tunisia
| | - A Sellami
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia
| | - S Lassoued
- Higher Institut of Biotechnology of Sfax, Sfax, Tunisia
| | - R Ben Mansour
- Higher Institut of Biotechnology of Sfax, Sfax, Tunisia
| | - L Keskes
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia.,Laboratory of Human Molecular Genetics, Medicine Faculty of Sfax, Sfax, Tunisia
| | - T Rebai
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia
| | - N Chakroun
- Laboratory of Histology-Embryology, Medicine Faculty of Sfax, Sfax, Tunisia
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Nemitallah M, Habib M, Mansour RB. Investigations of oxy-fuel combustion and oxygen permeation in an ITM reactor using a two-step oxy-combustion reaction kinetics model. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2012.12.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abida O, Gargouri B, Ben Mansour R, Mseddi-Djemal M, Masmoudi A, Ben Ayed M, Abdelmoula M, Turki H, Lassoued S, Masmoudi H. Biomarkers of oxidative stress in epidermis of Tunisian pemphigus foliaceus patients. J Eur Acad Dermatol Venereol 2012; 27:e271-5. [PMID: 22738420 DOI: 10.1111/j.1468-3083.2012.04626.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Reactive oxygen species play a key role in the development of many dermatological disorders. OBJECTIVE The purpose of this study is to examine the lipid peroxidation, protein oxidation and antioxidative profile in Tunisian pemphigus foliaceus (PF) patients. METHODS Malondialdehyde (MDA), conjugated dienes (CD), protein thiol levels, catalase (CAT) and superoxide dismutase (SOD) activities were evaluated in skin biopsies of 13 patients compared to biopsies of 7 healthy controls. RESULTS Oxidative stress was confirmed in these three types of patient biopsies as compared to controls. Thus, MDA, CD levels and catalase CAT and SOD activities were significantly increased in lesional, perilesional and normal biopsies of PF patients than in those of control subjects. Protein oxidative was confirmed by lower levels of protein thiols in lesional, perilesional and normal biopsies than in control's biopsies. Otherwise, in patients, a significant rise of these biomarkers was observed in lesional and perilesional biopsies compared with normal biopsies. CONCLUSION This study shows that oxidative stress could be involved in the pathogenesis of PF by the spread of skin lesions and/or by the increase in auto-antibodies' reactivity.
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Affiliation(s)
- O Abida
- Laboratoire d'Immunologie, hôpital Habib Bourguiba, Université de Sfax, Tunisie Laboratoire d'analyse, valorisation et sécurité des aliments, groupe de recherche, Biotechnologie et pathologies, Institut Supérieur de Biotechnologie de Sfax, Université de Sfax, Tunisie Service de Dermatologie, hôpital Hédi Chaker, Sfax, Tunisie Service de chirugie Maxillo-fasciale, hôpital Habib Bourguiba, Sfax, Tunisie
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Ben Mansour R, Lassoued S, Elgaied A, Haddouk S, Marzouk S, Bahloul Z, Masmoudi H, Attia H, Aïfa MS, Fakhfakh F. Enhanced reactivity to malondialdehyde-modified proteins by systemic lupus erythematosus autoantibodies. Scand J Rheumatol 2010; 39:247-53. [PMID: 20429675 DOI: 10.3109/03009740903362511] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Evaluation of the reactivity of autoantibodies of systemic lupus erythematosus (SLE) patients directed against malondialdehyde (MDA)-modified catalase, superoxide dismutase (SOD), and different Hep2 protein fractions (hydrophobic, hydrophilic, and nuclear). METHOD Thiol groups and MDA-protein adducts were first assessed among 65 SLE patients and 60 healthy controls. Then, the reactivities of SLE immunoglobulin (Ig)G autoantibodies towards MDA-modified and unmodified proteins were compared using a standard enzyme-linked immunosorbent assay (ELISA). RESULTS An increase in the levels of MDA-modified proteins and a decrease in the concentration of thiol groups among SLE patients (p < 0.05) were observed. IgG circulating autoantibodies in the sera of SLE patients exhibited a significant enhanced reactivity (p < 0.05) against catalase and SOD-modified proteins. The same data were observed in the different protein fractions extracted from cultured cells (p < 0.05). CONCLUSION These data reinforce the role of oxidative stress and especially lipid peroxidation products in the progression of SLE disease.
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Affiliation(s)
- R Ben Mansour
- Unit of Biotechnology and Pathology, Higher Institute of Biotechnology of Sfax, Tunisia.
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Mansour RB, Lassoued S, Gargouri B, El Gaïd A, Attia H, Fakhfakh F. Increased levels of autoantibodies against catalase and superoxide dismutase associated with oxidative stress in patients with rheumatoid arthritis and systemic lupus erythematosus. Scand J Rheumatol 2008; 37:103-8. [PMID: 18415766 DOI: 10.1080/03009740701772465] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To evaluate the level of autoantibodies against superoxide dismutase (SOD) and catalase (CAT) in the sera of rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) Tunisian patients, to study the oxidative profile among the same patients and to establish a correlation between the two parameters in order to understand the role of each one in the genesis of the two diseases. METHOD Using a standard enzyme-linked immunosorbent assay (ELISA), the levels of immunoglobulin G (IgG) and IgM directed against CAT and SOD in the sera of 39 RA patients, 40 SLE patients, and 50 control healthy individuals were evaluated. The oxidative/antioxidative profile was tested by measuring serum malondialdehyde (MDA), conjugated dienes (CD), CAT activity, and SOD activity. RESULTS Our data showed increased levels of IgG antibodies (Ab) against CAT in both groups of patients (p<0.05) compared to control subjects. However, the SLE patients displayed an increased level of anti-SOD IgG (p<0.05). In all patients the lipid peroxidation was confirmed by high levels of MDA and conjugated dienes (p<0.05). RA patients exhibited an increasing CAT and SOD activity in their sera (p<0.05) with a positive correlation observed between CAT and IgG anti-CAT (p<0.05). The same results were observed for SLE patients. In addition, a positive correlation was observed between anti-CAT Ab and anti-SOD Ab in SLE patients (p<0.05). CONCLUSION Collectively, these results suggested that the primary factor causing the oxidative stress observed in RA and SLE is excessive free radical production rather than impaired CAT or SOD activity due to autoantibody inhibition.
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Affiliation(s)
- R Ben Mansour
- Units of Biotechnology and Pathology, Higher Institute of Biotechnology of Sfax, Sfax, Tunisia.
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Dandana A, Ferchichi S, Khedhiri S, Chkioua L, Jaidane Z, Monastiri K, Ben Khelifa S, Ben Mansour R, Maire I, Froissart R, Bonnet V, Laradi S, Miled A. [Biochemical and molecular diagnosis of Gaucher disease in Tunisia]. Ann Biol Clin (Paris) 2007; 65:647-652. [PMID: 18039610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Accepted: 08/27/2007] [Indexed: 05/25/2023]
Abstract
Our study was carried out at a family from the Sahel (Tunisia). The father (index case) and his two children (son and daughter). The father beta-glucocerebrosidase (GCB) activity showing a deficit. These biochemical analyses are supplemented by molecular studies: enzymatic digestion and the direct sequencing. Two mutations were analysed, the p.Asn 370 Ser and the p.Leu 444 Pro. The DNA sequencing confirmed the presence of the homozygous genotype of this p.Asn 370 Ser in the father DNA and the heterozygous one in the two children DNA. It has no detection of the 55 pb deletion in exon 9 among all the specimens of DNA treated. The mutation p.Asn 370 Ser is associated with Gaucher disease type 1 correlated of a total absence of neurological involvements.
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Affiliation(s)
- A Dandana
- Laboratoire de biochimie, CHU Farhat Hached, Sousse, Tunisia.
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Chkioua L, Ferchichi S, Khedhiri S, Laradi S, Bibi A, Amira D, Dandana A, Ben Mansour R, Ben Limam H, Chaabouni M, Froissart R, Maire I, Miled A. [Diagnostic strategy of mucopolysaccharidosis type I in Tunisia]. Ann Biol Clin (Paris) 2007; 65:175-9. [PMID: 17353172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2006] [Accepted: 12/20/2006] [Indexed: 05/14/2023]
Abstract
A Tunisian patient affected by mucopolysaccharidosis (MPS) was investigated for a biological analysis (quantitative and qualitative glycosaminoglycans (GAG) screening). We have also done an enzymatic determination of alpha-L-iduronidase activity (IDUA). The most common mutation (p.Gln 70 X, p.Trp 402X and p.Pro 533 Arg) were researched by an enzymatic restriction and sequencing of the IDUA gene. Enzymatic and urinary diagnostics suggested a MPS I phenotype. The patient investigated had the mutation p.Pro 533 Arg in the homozygous status, whereas his parents were heterozygous for this mutation.
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Affiliation(s)
- L Chkioua
- Laboratoire de biochimie, Hôpital Farhat Hached de Sousse, Tunisie
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Khedhiri S, Chkioua L, Ferchichi S, Bouzidi H, Haj Khelil A, Ben Mansour R, Kassab A, M'dallah S, Chaabouni M, Jrad T, Ben Chibani J, Miled A, Laradi S. [Clinical, biologic and molecular characteristics of two Tunisian MPS IV A patients]. Ann Biol Clin (Paris) 2007; 65:59-63. [PMID: 17264040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2006] [Accepted: 10/13/2006] [Indexed: 05/13/2023]
Abstract
Mucopolysaccharidosis type IV A (MPS IV A) is an autosomal recessive disorder resulting from the deficient activity of the lysosomal enzyme, N-acetylgalactosamine-6-sulfate sulfatase (GALNS) and the progressive lysosomal accumulation of keratane sulfate. Clinically, the MPS IV A differs from the other MPS by the localisation of the keratane sulfate in skelet and in eyes associated to the conservation of a normal intelligence. To date, the characterization and purification of the GALNS gene made a research for pathogenic mutations in patients with MPS IV A easier. These mutations are responsible of severe, intermediate or mild phenotype. The aim for this work was the research of clinical, biologic and molecular characteristics of two Tunisian MPS IV A patients who were offsprings of consanguineous mating. Enzymatic and urinary diagnostics suggested a MPS IV A phenotype. A novel homozygous mutation IVS1+1G-A was identified by direct sequencing in the GALNS gene of the two patients. Identification of GALNS mutations provide genotype/phenotype correlations and permit the precision of anomalies responsible of Morquio A phenotype in concerned families.
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Affiliation(s)
- S Khedhiri
- Laboratoire de Biochimie, CHU Hached, Sousse, Tunisie
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Laradi S, Monastiri K, Ferchichi S, Nabli N, Aouini Rea P, Ben Limam H, Ben Mansour R, Bousoffara R, Yacoub M, Froissart R, Miled A, Maire I. [Clinico-biologic and molecular study of mucopolysaccharidosis in central and southern Tunisia]. Ann Biol Clin (Paris) 2001; 59:100-4. [PMID: 11252262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- S Laradi
- Laboratoire de biochimie, CHU F.-Hached, Sousse, Tunisie
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