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Jamai D, Kallel I, Mekrazi S, Aloulou S, Walha M, Selmi B, Khabir A. Combined expression of HIF1α, VEGF and HER2 predicts metastasis, relapse and response to combination chemotherapy in colorectal cancer patients. Ann Diagn Pathol 2023; 66:152168. [PMID: 37290395 DOI: 10.1016/j.anndiagpath.2023.152168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/10/2023]
Abstract
Addressing a single target is the frequent development of drug resistance followed by cancer relapse and treatment failure. Therefore, assessment of simultaneous expression of target molecules is essential to choose the optimal combination therapy for each colorectal cancer patient. This study aims to evaluate the immunohistochemical expression of HIF1α, HER2 and VEGF and to clarify their clinical significance as prognostic factors and predictive markers of FOLFOX (combination chemotherapy inclusive of Leucovorin calcium, Fluorouracil and Oxaliplatin response). Marker expression was retrospectively evaluated by immunohistochemistry in 111 patients with colorectal adenocarcinomas from south Tunisia, followed by statistical analysis. The immunohistochemical staining revealed that 45 %, 80.2 %, 86.5 % and 25.5 % of specimen were positive for nuclear, cytoplasmic HIF1α expression, VEGF and HER2 respectively. Nuclear HIF1α and VEGF were associated with worst prognosis while cytoplasmic HIF1α and HER2 were correlated with favourable prognosis. Multivariate analysis confirms the association between nuclear HIF1α, distant metastasis, relapse, FOLFOX response and 5 years overall survival. HIF1α positivity and HER2 negativity were significantly associated to short survival. Combined immunoprofiles HIF1α+/VEGF+, HIF1α+/HER2-, HIF1α+/VEGF+/HER2- were associated to distant metastasis, cancer relapse and short survival. Interestingly, our findings confirmed that patients bearing a HIF1α positive tumor were significantly more resistant to FOLFOX compared to negative ones (p = 0.002, p ≤ 0.001). Positive expression of HIF1α and VEGF, or decreased expression of HER2 was each associated with poor prognosis and short overall survival. In summary, we found that expression of nuclear HIF1α, alone or combined with VEGF and HER2 serves as a predictive marker of poor prognosis and FOLFOX response in colorectal cancer from south Tunisia.
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Affiliation(s)
- Dhouha Jamai
- Research Laboratory of Bioresources, Integrative Biology and Valorization LR14ES06, Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Hadded, BP 74, 5000 Monastir, Tunisia.
| | - Imen Kallel
- Research Laboratory of Toxicology, Microbiology, Environmental and Health LR17ES06, Faculty of Sciences of Sfax, University of Sfax, Tunisia
| | - Saoussen Mekrazi
- Research Laboratory of Toxicology, Microbiology, Environmental and Health LR17ES06, Faculty of Sciences of Sfax, University of Sfax, Tunisia
| | - Samir Aloulou
- Medical Oncology Service, Mohamed Ben Sassi University Hospital, Gabes, Tunisia
| | - Marwa Walha
- Department of Pathology, Habib Bourguiba University Hospital, Medenine, Tunisia
| | - Boulbaba Selmi
- Research Laboratory of Bioresources, Integrative Biology and Valorization LR14ES06, Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Hadded, BP 74, 5000 Monastir, Tunisia
| | - Abdelmajid Khabir
- Department of Pathology, Habib Bourguiba University Hospital, Medenine, Tunisia
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Mekrazi S, Kallel I, Jamai D, Yengui M, Khabir A, Gdoura R. Epstein-Barr virus in breast carcinoma and in triple negative cases impact on clinical outcomes. Pathol Res Pract 2023; 245:154484. [PMID: 37116366 DOI: 10.1016/j.prp.2023.154484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 04/30/2023]
Abstract
BACKGROUND The contribution of viral infection in tumors pathogenesis has currently attracted attention. Epstein-Barr virus is an infectious agent involved in numerous human malignancies, including breast cancer. Although, their prognostic impact in breast tumor is rarely investigated. Therefore, we sought in our study to evaluate the prevalence of EBV in Tunisian breast carcinoma and to examine their potential association with clinicopathological features and overall survival. METHODS Our retrospective study included 100 formalin fixed paraffin embedded samples from Tunisian breast carcinoma. EBV infection was evaluated by immunohistochemical analysis, using monoclonal antibody against latent membrane protein 1 (LMP-1) and polymerase chain reaction. A subset of PCR positive specimens was subjected to in situ hybridization for the detection of EBER expression. Biomarker's expression was evaluated by immunohistochemistry method. Statistical analysis was also explored. RESULTS The expression status of ER, PR and HER2 was 81%, 71.4% and 33.7% respectively. The triple negative profile was present in 10.84% of cases. LMP-1 expression was negative in all breast cancer specimens. PCR assay showed that 44% of patients were positive for EBV genome. None of the 15 PCR positive cases showed positive results for EBV by ISH. According to the molecular phenotype, there was a statistically significant difference in EBV DNA prevalence between breast cancer subgroups including TN (67%), Lum B (64%), HER2 + (50%) and Lum A (30%). Bivariate analysis showed that EBV DNA was significantly associated with HER2 + (p = 0.035), tumor size (p = 0.018) and high SBR grade (p = 0.009). Multiple logistic regression analysis confirms the positive correlation of EBV with tumor size (p = 0.048) and SBR grade (p = 0.042). Kaplan-Meier analysis showed that patients with EBV+ had significantly shorter overall survival than those with EBV- (p = 0.032). CONCLUSIONS Our study demonstrated the presence of EBV DNA in Tunisian breast carcinoma. EBV DNA was associated with aggressive features and poor overall survival. Further investigations will be required in large samples size to clarify the potential role of EBV in breast tumor progression.
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Affiliation(s)
- Saoussen Mekrazi
- Research Laboratory of Environmental Toxicology-Microbiology and Health (LR17ES06), Faculty of Sciences, University of Sfax, 3038 Sfax, Tunisia
| | - Imen Kallel
- Research Laboratory of Environmental Toxicology-Microbiology and Health (LR17ES06), Faculty of Sciences, University of Sfax, 3038 Sfax, Tunisia.
| | - Dhouha Jamai
- Research Laboratory of Bioresources, Integrative Biology and Valorization LR14ES06, Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Hadded, BP 74, 5000 Monastir, Tunisia
| | - Mariem Yengui
- Research Laboratory of Environmental Toxicology-Microbiology and Health (LR17ES06), Faculty of Sciences, University of Sfax, 3038 Sfax, Tunisia
| | - Abdelmajid Khabir
- Department of Anatomopathology and Cytology - Habib BOURGUIBA Hospital, Medenine, Tunisia
| | - Radhouane Gdoura
- Research Laboratory of Environmental Toxicology-Microbiology and Health (LR17ES06), Faculty of Sciences, University of Sfax, 3038 Sfax, Tunisia
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Kallel I, Tarhouni N, Elaguel A, Mekrazi S, Khabir A, Hadrich B, Bayoudh A. The Phytochemical and Pharmacological Properties of Citrus sinensis 'Maltese Half-Blood' Essential Oil Peels Extracted and Optimized by Response-Surface Methodology. Curr Pharm Biotechnol 2023:CPB-EPUB-130705. [PMID: 37038662 DOI: 10.2174/1389201024666230405120520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/09/2023] [Accepted: 02/27/2023] [Indexed: 04/12/2023]
Abstract
AIMS The present study aims to evaluate the phytochemical and pharmacological potentials of the optimized Citrus sinensis 'Maltese half-blood' essential oils peels (CsEO) extraction yields using Response-Surface Methodology (RSM). BACKGROUND Citrus fruits have been a valuable economic crop for thousands of years. Furthermore, citrus essential oils are significant in the perfume, food, and beverage sectors, as well as aromatherapy and medical medicines. OBJECTIVE There have been few investigations on Citrus sinensis 'Maltese half-blood' essential oil. METHODS Citrus sinensis 'Maltese half-blood' essential oil peels (CsEO) extraction yields were performed by hydro-distillation and optimized by using Response-Surface Methodology (RSM). The oils were analysed by GC-MS. Different chemical tests were used to evaluate antioxidant activities. The healing potential was evaluated using models' wounds on Wistar rats. RESULTS The RSM optimization demonstrated the highest yield of CsEO of 6.89 g/100 g d.b. All three tested factors significantly influenced the CsEO extraction yield: washing saline solution concentration, washings number, and drying percentage of peels. Significant antioxidant activities were noted in CsEO: the DPPH assay reported an IC50 of 0.225 ±0.014 mL/mg, the FRAP assay showed an IC50 of 0.235 ±0.001, and the NO assay was an IC50 in order of 0.259 ±0.019. CsEO was not genotoxic and considerably decreased the levels of DNA lesions induced by oxidants. Also, applying a cream with CsEO on wounds promotes significantly rapid wound healing. CONCLUSION CsEO could be considered a rich natural source of antioxidants and bio-compounds to accelerate wound healing. It can be used in pharmaceutical sectors as an alternative to synthetic chemicals.
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Affiliation(s)
- Imen Kallel
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000 Sfax, Tunisie
| | - Nidhal Tarhouni
- National School of Engineers of Sfax Department of life sciences Sfax Tunisia
| | - Asma Elaguel
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000 Sfax, Tunisie
| | - Saoussen Mekrazi
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000 Sfax, Tunisie
| | - Abdelmajid Khabir
- The University of Gabès, Department of Life Sciences
- Service universitaire d'anatomie et de cytologie pathologiques Hôpital Habib Bourguiba de Médenine
| | - Bilel Hadrich
- Department of Chemical Engineering, College of Engineering, Imam Mohammad Ibn Saud Islamic University, IMSIU, Riyadh 11432, Saudi Arabia
- Laboratory of Enzyme Engineering and Microbiology, Biological Engineering Department, Engineering National School of Sfax (ENIS), University of Sfax, Tunisia
| | - Ahmed Bayoudh
- Laboratory of Enzyme Engineering and Microbiology, Biological Engineering Department, Engineering National School of Sfax (ENIS), University of Sfax, Tunisia
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Abid N, Karray F, Kallel I, Slim M, Barakat A, Mhiri N, Chamkha M, Sayadi S. Role of biochar in anaerobic microbiome enrichment and methane production enhancement during olive mill wastewater biomethanization. Front Bioeng Biotechnol 2023; 10:1100533. [PMID: 36686251 PMCID: PMC9846136 DOI: 10.3389/fbioe.2022.1100533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/08/2022] [Indexed: 01/05/2023] Open
Abstract
The current research work attempted to investigate, for the first time, the impact of biochar addition, on anaerobic digestion of olive mill wastewater with different initial chemical oxygen demand loads in batch cultures (10 g/L, 15 g/L, and 20 g/L). Methane yields were compared by applying one-way analysis of variance (ANOVA) followed by post-hoc Tukey's analysis. The results demonstrated that adding at 5 g/L biochar to olive mill wastewater with an initial chemical oxygen demand load of 20 g/L increased methane yield by 97.8% and mitigated volatile fatty acid accumulation compared to the control batch. According to the results of microbial community succession revealed by the Illumina amplicon sequencing, biochar supplementation significantly increased diversity of the microbial community and improved the abundance of potential genera involved in direct interspecies electron transfer, including Methanothrix and Methanosarcina. Consequently, biochar can be a promising alternative in terms of the recovery of metabolic activity during anaerobic digestion of olive mill wastewater at a large scale.
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Affiliation(s)
- Nozha Abid
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, Sfax, Tunisia,*Correspondence: Nozha Abid, ; Sami Sayadi,
| | - Fatma Karray
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, Sfax, Tunisia
| | - Imen Kallel
- Research Laboratory of Environmental Toxicology-Microbiology and Health (LR17ES06), Faculty of Sciences, University of Sfax, Sfax, Tunisia
| | - Mariam Slim
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, Sfax, Tunisia
| | - Abdellatif Barakat
- IATE, Montpellier University, INRAE, Agro Institut, Montpellier, France,Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Najla Mhiri
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, Sfax, Tunisia
| | - Mohamed Chamkha
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, Sfax, Tunisia
| | - Sami Sayadi
- Biotechnology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar,*Correspondence: Nozha Abid, ; Sami Sayadi,
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Belghith Y, Kallel I, Rosa M, Stathopoulos P, Skaltsounis LA, Allouche N, Chemat F, Tomao V. Intensification of Biophenols Extraction Yield from Olive Pomace Using Innovative Green Technologies. Biomolecules 2022; 13:65. [PMID: 36671450 PMCID: PMC9855426 DOI: 10.3390/biom13010065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/24/2022] [Accepted: 12/15/2022] [Indexed: 01/01/2023] Open
Abstract
Olive pomace is the main by-product generated by the olive oil production process. Although toxic to the environment, olive pomace is an important source of natural antioxidants due to its high content of phenolic compounds. The aim of the current study is to maximize the extraction yields of the main phenolic compounds present in olive pomace using innovative green technologies. For this purpose, the present work is divided into two parts. The first part is based on a solubility study of targeted phenolic compounds in various ethanol/water ratios at two different temperatures (20 °C and 50 °C). A computational prediction using COSMO-RS software was applied for the calculation of eventual solubility, which was subsequently confirmed by practical experiments. The determination of the optimal extraction conditions of solvent ratio (EtOH/H2O) (60:40 v/v) and temperature (50 °C) led to the second part of the work, which concerns the intensification of extraction yields. Furthermore, various green extractions using innovative technologies, including accelerated solvent extraction (ASE), ultrasound with its both system (probe (UAE-P) and bath (UAE-B)), bead milling (BM) and microwave (MAE), were carried out and then compared to conventional maceration (CM). Results showed that ASE was the most effective method for extracting phenolic compounds from dried olive pomace powder (5.3 milligrams of tyrosol equivalent (TE) per gram of dried olive pomace powder (DOP)) compared to CM (3.8 mg TE/g DOP).
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Affiliation(s)
- Yosra Belghith
- Natural Substances Team, Laboratory of Organic Chemistry LR17ES08, Faculty of Sciences of Sfax, University of Sfax, P.B. 1171, Sfax 3000, Tunisia
- MicroNut Team, INRA, UMR408, Université d’Avignon, F-84000 Avignon, France
| | - Imen Kallel
- Laboratory of Toxicology-Environmental Microbiology and Health Research (LR17ES06), Faculty of Sciences of Sfax, University of Sfax, Sfax 3000, Tunisia
| | - Maxence Rosa
- MicroNut Team, INRA, UMR408, Université d’Avignon, F-84000 Avignon, France
| | - Panagiotis Stathopoulos
- Division of Pharmacognosy and Natural Products Chemistry, Department of Pharmacy, NKUA, 15771 Athens, Greece
| | - Leandros A. Skaltsounis
- Division of Pharmacognosy and Natural Products Chemistry, Department of Pharmacy, NKUA, 15771 Athens, Greece
| | - Noureddine Allouche
- Natural Substances Team, Laboratory of Organic Chemistry LR17ES08, Faculty of Sciences of Sfax, University of Sfax, P.B. 1171, Sfax 3000, Tunisia
| | - Farid Chemat
- GREEN Team, INRA, UMR408, Université d’Avignon, F-84000 Avignon, France
| | - Valérie Tomao
- MicroNut Team, INRA, UMR408, Université d’Avignon, F-84000 Avignon, France
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EL-Aguel A, Pennisi R, Smeriglio A, Kallel I, Tamburello MP, D’Arrigo M, Barreca D, Gargouri A, Trombetta D, Mandalari G, Sciortino MT. Punica granatum Peel and Leaf Extracts as Promising Strategies for HSV-1 Treatment. Viruses 2022; 14:v14122639. [PMID: 36560643 PMCID: PMC9782130 DOI: 10.3390/v14122639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
Punica granatum is a rich source of bioactive compounds which exhibit various biological effects. In this study, pomegranate peel and leaf ethanolic crude extracts (PPE and PLE, respectively) were phytochemically characterized and screened for antioxidant, antimicrobial and antiviral activity. LC-PDA-ESI-MS analysis led to the identification of different compounds, including ellagitannins, flavonoids and phenolic acids. The low IC50 values, obtained by DPPH and FRAP assays, showed a noticeable antioxidant effect of PPE and PLE comparable to the reference standards. Both crude extracts and their main compounds (gallic acid, ellagic acid and punicalagin) were not toxic on Vero cells and exhibited a remarkable inhibitory effect on herpes simplex type 1 (HSV-1) viral plaques formation. Specifically, PPE inhibited HSV-1 adsorption to the cell surface more than PLE. Indeed, the viral DNA accumulation, the transcription of viral genes and the expression of viral proteins were significantly affected by PPE treatment. Amongst the compounds, punicalagin, which is abundant in PPE crude extract, inhibited HSV-1 replication, reducing viral DNA and transcripts accumulation, as well as proteins of all three phases of the viral replication cascade. In contrast, no antibacterial activity was detected. In conclusion, our findings indicate that Punica granatum peel and leaf extracts, especially punicalagin, could be a promising therapeutic candidate against HSV-1.
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Affiliation(s)
- Asma EL-Aguel
- Research Laboratory Toxicology-Environmental Microbiology and Health (LR17ES06), Faculty of Sciences of Sfax, P.O. Box 1171, Sfax 3000, Tunisia
| | - Rosamaria Pennisi
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (R.P.); (G.M.)
| | - Antonella Smeriglio
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Imen Kallel
- Research Laboratory Toxicology-Environmental Microbiology and Health (LR17ES06), Faculty of Sciences of Sfax, P.O. Box 1171, Sfax 3000, Tunisia
| | - Maria Pia Tamburello
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Manuela D’Arrigo
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Ahmed Gargouri
- Research Laboratory Toxicology-Environmental Microbiology and Health (LR17ES06), Faculty of Sciences of Sfax, P.O. Box 1171, Sfax 3000, Tunisia
| | - Domenico Trombetta
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Giuseppina Mandalari
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
- Correspondence: (R.P.); (G.M.)
| | - Maria Teresa Sciortino
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy
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Bouhamed M, Sallemi R, Bouaziz A, Kallel I, Feki I, Masmoudi J. Perfectionism in academic settings and relationship to depression and socio-demographic characteristics. Eur Psychiatry 2022. [PMCID: PMC9567421 DOI: 10.1192/j.eurpsy.2022.1441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
Acute measles encephalitis is a pathology of the central nervous system. It is most frequent in children but can also be described in adults. Given the rarity of this pathology, we present the case of this patient.
Objectives
To assess perfectionism and depression and to study the relationship between these two parameters in a population of medical students.
Methods
We conducted a descriptive and analytical cross-sectional study among students of the Faculty of Medicine of Sfax during the months of June, July, and August 2020. The data were collected through a self-questionnaire disseminated on the social network “Facebook”.This questionnaire included identification of socio-demographic characteristics as well as the personal history of students. Perfectionism was assessed by the Rheaume scale and depression by the Beck scale.
Results
A total of 206 students participated in the survey. The mean age was 21.49 ± 1.37 years. The majority of students were female (57.2%) with a sex ratio (F/H) of 1.34. Of the participants, 39.8% were enrolled as undergraduates and 60.19% as graduate students. According to their scores on the Rheaume scale, the students were non-perfectionists (NP) in 21.4% of cases; moderately perfectionists (MP) in 70.38% of cases, and highly perfectionists (HP) in 8.25% of cases. Severe depression was objectified in 7.3% of the cases. Students living alone were less perfectionist (p=0.01). Perfectionism score was higher in depressed students (35 ± 6.34) versus (31.428 ± 6.37) with a statistically significant correlation ( p ≤ 0.001).
Conclusions
It is true that perfectionism is an essential element for academic success. However, screening and prevention of depression are deemed necessary given its significant association with perfectionism.
Disclosure
No significant relationships.
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Ben-Amor I, Gargouri B, Attia H, Tlili K, Kallel I, Musarra-Pizzo M, Sciortino MT, Pennisi R. In Vitro Anti-Epstein Barr Virus Activity of Olea europaea L. Leaf Extracts. Plants (Basel) 2021; 10:plants10112445. [PMID: 34834807 PMCID: PMC8622071 DOI: 10.3390/plants10112445] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/09/2021] [Accepted: 11/10/2021] [Indexed: 05/08/2023]
Abstract
Olea europaea L. var. sativa (OESA) preparations are widely used in traditional medicine in the Mediterranean region to prevent and treat different diseases. In this research, olive extracts derived from the leaves of the OESA tree have been screened for antioxidant activity by two methods: the DPPH free radical scavenging assay (DPPH) and the Ferric reducing antioxidant power (FRAP) assay. The DPPH assay showed that OESA possesses a stronger antioxidant activity (84%) at 1 mg/mL while the FRAP method showed a strong metal ion chelating activity (90%) at 1 mg/mL. The low IC50 values, obtained by two different methods, implies that OESA has a noticeable effect on scavenging free radicals comparable to standards. During EBV infection, the free radicals increased triggering lipid oxidation. Therefore, the monitoring of the secondary lipid peroxidation products was done by measuring malonaldehyde (MDA) and conjugated dienes (DC). The simultaneous treatment of Raji cells with OESA and TPA, as an inductorof the lytic cycle, generated a significant decrease in MDA levels and DC (p < 0.05). Besides, Raji cells simultaneously exposed to TPA and OESA exhibited a percentage of EBV-positive fluorescence cells lower than TPA treated cells (**** p < 0.0001). This suggests that OESA treatment has a protective effect against EBV lytic cycle induction.
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Affiliation(s)
- Ichrak Ben-Amor
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno Alcontres, 31, 98166 Messina, Italy; (I.B.-A.); (M.M.-P.); (M.T.S.)
- Unit of Biotechnology and Pathologies, Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax 3029, Tunisia; (B.G.); (H.A.); (K.T.)
| | - Bochra Gargouri
- Unit of Biotechnology and Pathologies, Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax 3029, Tunisia; (B.G.); (H.A.); (K.T.)
| | - Hamadi Attia
- Unit of Biotechnology and Pathologies, Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax 3029, Tunisia; (B.G.); (H.A.); (K.T.)
| | - Khaoula Tlili
- Unit of Biotechnology and Pathologies, Higher Institute of Biotechnology of Sfax, University of Sfax, Sfax 3029, Tunisia; (B.G.); (H.A.); (K.T.)
| | - Imen Kallel
- Laboratoire de Recherche Toxicologie-Microbiologie Environnementale et Santé, Faculté des Sciences de Sfax, Sfax 3000, Tunisia;
| | - Maria Musarra-Pizzo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno Alcontres, 31, 98166 Messina, Italy; (I.B.-A.); (M.M.-P.); (M.T.S.)
| | - Maria Teresa Sciortino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno Alcontres, 31, 98166 Messina, Italy; (I.B.-A.); (M.M.-P.); (M.T.S.)
| | - Rosamaria Pennisi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno Alcontres, 31, 98166 Messina, Italy; (I.B.-A.); (M.M.-P.); (M.T.S.)
- Correspondence:
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Bchir S, Boumiza S, Ben Nasr H, Garrouch A, Kallel I, Tabka Z, Chahed K. Impact of cathepsin D activity and C224T polymorphism (rs17571) on chronic obstructive pulmonary disease: correlations with oxidative and inflammatory markers. Clin Exp Med 2021; 21:457-465. [PMID: 33611777 DOI: 10.1007/s10238-021-00692-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Cathepsin D (CTSD) is an aspartyl proteinase that plays an important role in protein degradation, antigen processing and apoptosis. It has been associated with several pathologies such as cancer, Alzheimer's disease and inflammatory disorders. Its function in lung diseases remains, however, controversial. In the current study, we determined CTSD activity in serum of patients with chronic obstructive pulmonary disease (COPD) and evaluated the correlations between this proteinase and inflammatory and oxidative parameters. We also investigated the impact of a CTSD C224T polymorphism on enzyme activity and clinicopathological parameters. METHODS Our population included 211 healthy controls and 138 patients with COPD. CTSD activity, MMPs (-1/-7/-12), cytokines (IL-6, TNF-α), malondialdehyde (MDA), nitric oxide and peroxynitrite levels were measured in patients and controls using standard methods. Genotyping of CTSD C224T polymorphism was determined using PCR-RFLP. RESULTS Our results showed an increased CTSD activity in COPD patients compared to healthy controls (4.87 [3.99-6.07] vs. 3.94 [2.91-5.84], respectively, p < 0.001). COPD smokers presented also a higher CTSD activity when compared to nonsmokers (4.91[3.98-6.18] vs. 4.65[4.16-5.82], respectively, p = 0.01), while no differences were found when subjects were compared according to their GOLD stages. The activity of this proteinase was not dependent on the C224T polymorphism because we did not found any influence of this SNP on proteinase activity among patients and controls. Furthermore, our data provide the first evidence of the interrelationships between CTSD activity and both MMPs and TNF-α levels (MMP-1[r = - 0.4; p = 0.02], MMP-7[r = 0.37; p = 0.04], MMP-12[r = 0.43; p = 0.02], TNF-α [r = 0.89, p = 0.001]) in COPD smokers. There were no correlations, however, between CTSD activity and oxidative stress parameters in controls and patients. CONCLUSION Our findings suggest that CTSD could be a relevant marker for COPD disease. Alteration of CTSD activity may be related to increased MMPs and TNF-α levels, particularly in COPD smokers.
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Affiliation(s)
- Sarra Bchir
- Laboratoire de Recherche LR19ES09, Physiologie de L'Exercice Et Physiopathologie : de L'Intégré Au Moléculaire Biologie, Médecine Et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia.
| | - Soumaya Boumiza
- Laboratoire de Recherche LR19ES09, Physiologie de L'Exercice Et Physiopathologie : de L'Intégré Au Moléculaire Biologie, Médecine Et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia
| | - Hela Ben Nasr
- Laboratoire de Recherche LR19ES09, Physiologie de L'Exercice Et Physiopathologie : de L'Intégré Au Moléculaire Biologie, Médecine Et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia.,Institut Des Sciences Infirmières, Sousse, Tunisia
| | | | - Imen Kallel
- Laboratoire de Recherche Toxicologie Microbiologie Environnementale Et Santé LR17ES06, Faculté Des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Zouhair Tabka
- Laboratoire de Recherche LR19ES09, Physiologie de L'Exercice Et Physiopathologie : de L'Intégré Au Moléculaire Biologie, Médecine Et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia
| | - Karim Chahed
- Laboratoire de Recherche LR19ES09, Physiologie de L'Exercice Et Physiopathologie : de L'Intégré Au Moléculaire Biologie, Médecine Et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia.,Faculté Des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
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Gadhoumi F, Kallel I, Benzarti Z, Abdelmoula N, Hamedoun M, Elmoussaoui H, Mezzane D, Khemakhem H. Investigation of magnetic, dielectric and optical properties of BiFe0.5Mn0.5O3 multiferroic ceramic. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137569] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Elaguel A, Kallel I, Gargouri B, Ben Amor I, Hadrich B, Ben Messaoud E, Gdoura R, Lassoued S, Gargouri A. Lawsonia inermis essential oil: extraction optimization by RSM, antioxidant activity, lipid peroxydation and antiproliferative effects. Lipids Health Dis 2019; 18:196. [PMID: 31727081 PMCID: PMC6857162 DOI: 10.1186/s12944-019-1141-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/27/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The present study was focused on the optimization of yield of the essential oil extraction from leaves of Lawsonia inermis, and the determination of chemical composition, antioxidant activities, and lipid peroxydation and antiproliferative effects. METHODS Henna essential oil (HeEO) were extracted by hydrodistillation; the identification of the chemical composition were done by GC/MS method. HeEO was analyzed for antioxidant power in: (1) chemical system by the DPPH test, the ABTS test and the total antioxidant activity test; and (2) in biological system by lipid peroxydation tests (MDA and DC) in cells culture. The cytotoxicity effects of HeEO were assessed using MTT assay against Raji and HeLa cell lines. RESULTS The optimal extraction yield was 6.8 g/100 g d.b. HeEO showed a remarkable anti-oxidant activities including DDPH (42%), ABTS (87%) and the power of ammonium phosphomolybdate (2992 ± 230 mg of HeEO by equivalent to 1 mg of vitamin C in terms of total antioxidant power). CONCLUSION Beyond notable antioxidant activities of the HeEo, our results showed a significant decrease in the production of ERO in the Raji cell line. The anti-tumor power of the Henna essential oil shows an interesting cytotoxicity effect (IC50 at 0.26 μg/mL for Raji and at 1.43 μg/mL for HeLa) with a total mortality percentage reaching 60%, for both.
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Affiliation(s)
- Asma Elaguel
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000, Sfax, Tunisie
| | - Imen Kallel
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000, Sfax, Tunisie.
| | - Bochra Gargouri
- Unité de Biotechnologie et Pathologies, Institut Supérieur de Biotechnologie de Sfax, University of Sfax, Sfax, Tunisia
| | - Ichrak Ben Amor
- Unité de Biotechnologie et Pathologies, Institut Supérieur de Biotechnologie de Sfax, University of Sfax, Sfax, Tunisia
| | - Bilel Hadrich
- Unité de Biotechnologie des Algues, Biological Engineering Department, National School of Engineers of Sfax, University of Sfax, Sfax, Tunisia
| | - Ezeddine Ben Messaoud
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000, Sfax, Tunisie
| | - Radhouane Gdoura
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000, Sfax, Tunisie
| | - Saloua Lassoued
- Unité de Biotechnologie et Pathologies, Institut Supérieur de Biotechnologie de Sfax, University of Sfax, Sfax, Tunisia
| | - Ahmed Gargouri
- Laboratoire de recherche Toxicologie- Microbiologie Environnementale et Santé (LR17ES06), Faculté des Sciences de Sfax, Po Box 1171, 3000, Sfax, Tunisie
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Hcini E, Ben Slima A, Kallel I, Zormati S, Traore AI, Gdoura R. Does supplemental zeolite (clinoptilolite) affect growth performance, meat texture, oxidative stress and production of polyunsaturated fatty acid of Turkey poults? Lipids Health Dis 2018; 17:177. [PMID: 30055621 PMCID: PMC6064620 DOI: 10.1186/s12944-018-0820-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 07/10/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Following the ban on the use of growth factors, the use of zeolite in poultry feed could be a solution to obtain healthier food products that are more demanded by the consumer. METHODS Zeolite (Clinoptilolite) was added to turkey male and female feed at concentrations 1% or 2% and was evaluated for its effectiveness on performance of the production. The turkeys were given free and continuous access to a nutritionally non-limiting diet (in meal form) that was either a basal diet or a 'Zeolite supplemented-diet' (the basal diet supplemented with clinoptilolite at a level of 1% or 2%). RESULTS It was found that adding zeolite in the turkey diet had a positive effect on growth performance and increased weight gain compared to the control. In addition, zeolite treatment had a positive effect on oxidative stress and organoleptic parameters that were measured. It was found that adding zeolite in the turkey diet reduced the MDA level in the liver and in the meat, as compared to the control. Quality of meat was measured as a significantly increase (p < 0.05) in pH for male meat, indicated that the zeolite could maintain the quality of longer period. The adding of zeolite in the turkey diet increased level of polyunsaturated fatty acid. CONCLUSION This study showed the significance of using zeolite, as a feed additive for turkey, as part of a comprehensive program to improve growth performance and oxidative stress parameters and to increase level of polyunsaturated fatty acid on the turkey body.
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Affiliation(s)
- Emna Hcini
- Laboratory of Toxicology and Environmental Health LR11ES06, Sciences Faculty of Sfax, University of Sfax, Sfax, Tunisia
| | - Ahlem Ben Slima
- Laboratory of Toxicology and Environmental Health LR11ES06, Sciences Faculty of Sfax, University of Sfax, Sfax, Tunisia
| | - Imen Kallel
- Laboratory of Toxicology and Environmental Health LR11ES06, Sciences Faculty of Sfax, University of Sfax, Sfax, Tunisia
| | - Sonia Zormati
- Laboratory of Toxicology and Environmental Health LR11ES06, Sciences Faculty of Sfax, University of Sfax, Sfax, Tunisia
| | | | - Radhouane Gdoura
- Laboratory of Toxicology and Environmental Health LR11ES06, Sciences Faculty of Sfax, University of Sfax, Sfax, Tunisia
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Kharrat N, Al'Fadhli S, Rebaï M, Aifa M, Kallel I, Khabir A, Sellami-Boudawara T, Frikha M, Rebaï A. (AC) Dinucleotide Repeat Polymorphism in Intron 1 of Human EGFR Shows Ethnic Specificities and High Evidence for Association with Breast Cancer. Int J Biol Markers 2018. [DOI: 10.1177/172460080702200404] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A polymorphic AC repeat in intron 1 of the EGFR gene was genotyped on 352 healthy individuals and 118 women with breast cancer sampled from the Kuwaiti and Tunisian populations. We compared allele frequencies in these populations with published data on various ethnic groups. We found very close similarity between Tunisian and Kuwaiti populations for both allelic and genotypic frequencies and in both control and patient groups. Our analysis revealed clear interethnic differences between populations; in Europeans, allele 16 occurred predominantly, whereas in Tunisia and Kuwait allele 17 was the most frequent and allele 20 predominated in Asians. One hundred twenty-three healthy women, matched with the 118 breast cancer patients, were used as controls to test for associations between AC repeat and cancer risk. Strong evidence for such an association was found for allele 18 when considered alone (χ2=27.04, corrected p=0.0000016, OR=3.94) or with longer alleles (>17 repeats) (χ2=20.21, p=0.0005, OR=2.30). This contrasts with Asian populations where allele 16 was identified as the risk allele, showing allele heterogeneity depending on ethnicity.
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Affiliation(s)
- N. Kharrat
- Centre de Biotechnologie de Sfax, Bioinformatics and Genome Investigation Unit, Sfax - Tunisia
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Sulaibekhat - Kuwait
| | - S. Al'Fadhli
- Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Kuwait University, Sulaibekhat - Kuwait
| | - M. Rebaï
- Centre de Biotechnologie de Sfax, Bioinformatics and Genome Investigation Unit, Sfax - Tunisia
| | - M.S. Aifa
- Centre de Biotechnologie de Sfax, Bioinformatics and Genome Investigation Unit, Sfax - Tunisia
| | - I. Kallel
- Centre de Biotechnologie de Sfax, Bioinformatics and Genome Investigation Unit, Sfax - Tunisia
| | - A. Khabir
- Laboratoire d'Anatomie Pathologique, Habib Bourguiba Hospital, Sfax
| | | | - M. Frikha
- Service de Carcinologie, Habib Bourguiba Hospital, Sfax - Tunisia
| | - A. Rebaï
- Centre de Biotechnologie de Sfax, Bioinformatics and Genome Investigation Unit, Sfax - Tunisia
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Rebaї M, Kallel I, Abdelhedi R, kharrat N, Abdemoula Bouayed N, Abid L, Rebaї A. Association analysis of polymorphisms in EGFR , HER2 , ESR1 and THRA genes with coronary artery diseases. Egyptian Journal of Medical Human Genetics 2017. [DOI: 10.1016/j.ejmhg.2016.08.002] [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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15
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Ben Ayed R, Kallel I, Ben Hassen H, Rebai A. SNP marker analysis for validating the authenticity of Tunisian olive oil. J Genet 2014; 93:e148-e154. [PMID: 25572072] [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: 06/04/2023]
Affiliation(s)
- Rayda Ben Ayed
- Centre of Biotechnology of Sfax, P.B. '1177', 3018 Sfax, Tunisia.
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Abstract
Thyroid hormone receptors (TR) are prototypes of nuclear transcription factors that regulate the expression of target genes. These receptors play an important role in many physiological processes. Moreover, a dysfunction of these proteins is often implicated in several human diseases and malignancies. Here we report genetic variations and alterations of the TRs that have been described in the literature as well as their potential role in the development of some human diseases including cancers. The functional effects of some mutations and polymorphisms in TRs on disease susceptibility, especially on cancer risk, are now established. Therefore, further investigations are needed in order to use these receptors as therapeutic targets or as biological markers to decide on appropriate forms of treatment.
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Affiliation(s)
- Maha Rebaï
- Molecular and Cellular Diagnosis Processes, Centre of Biotechnology of Sfax, University of Sfax, Route Sidi Mansour, PO Box 1177, 3018 Sfax, Tunisia
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Khlifi R, Kallel I, Hammami B, Hamza-Chaffai A, Rebai A. DNA repair gene polymorphisms and risk of head and neck cancer in the Tunisian population. J Oral Pathol Med 2013; 43:217-24. [PMID: 24020925 DOI: 10.1111/jop.12114] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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: 07/23/2013] [Indexed: 11/26/2022]
Abstract
Altered activity of DNA repair enzymes may be involved in modulating cancer susceptibility and pathogenesis of head and neck cancer (HNC). We conducted a case-control study to test the association between three common single-nucleotide polymorphisms of XRCC1, ERCC2, and ERCC3 genes with HNC risk in Tunisian patients. To the best of our knowle dge, this is the first report on polymorphisms in XRCC1, ERCC2, and ERCC3 and susceptibility to HNC in our population. The genotype analyses of XRCC1 Arg399Gln, ERCC2 Lys751Gln, and ERCC3 7122 A>G polymorphisms for 169 HNC patients, and 261 controls were performed using the PCR-based restriction fragment length polymorphism. Stratification of the populations according to smoking and drinking habits and occupational exposure highlighted the importance of tobacco, alcohol, and toxic substance as three risk co-factors for the development of HNC. Our study suggests that only the XRCC1 Arg399Gln polymorphism was associated with the risk of HNC in the Tunisian population (OR = 2.04; P = 0.001). Furthermore, the risk of HNC was associated with XRCC1 Arg399Gln polymorphism stratified by occupational exposure status (OR = 2.29; P = 0.024). However, no statistically significant association was observed between the risk of developing HNC and the ERCC2 Lys751Gln and ERCC3 A>G polymorphisms. These data suggest that the XRCC1 Arg399Gln polymorphism is associated with an increased risk of developing HNC, because it correlates with occupational exposure in Tunisian population.
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Affiliation(s)
- Rim Khlifi
- Marine Ecotoxicology, UR 09-03, Sfax University, IPEIS, Sfax, Tunisia; Bioinformatics Unit, Centre of Biotechnology of Sfax, Sfax, Tunisia
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Kallel I, Khabir A, Boujelbene N, Abdennadher R, Daoud J, Frikha M, Aifa S, Sallemi-Boudawara T, Rebaï A. EGFR overexpression relates to triple negative profile and poor prognosis in breast cancer patients in Tunisia. J Recept Signal Transduct Res 2012; 32:142-9. [PMID: 22394363 DOI: 10.3109/10799893.2012.664552] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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
BACKGROUND The prognosis of breast carcinoma is related to a large variety of clinical and pathological factors. Currently, only oestrogen (ER) and progesterone (PR) receptors and human epidermal growth factor receptor 2 (HER2) are used in routine pathological assessment as biomarkers. The aim of this study was to evaluate the prognostic impact of epidermal growth factor receptor (EGFR) expression individually and in combination to classical biomarkers (HER2, ER, and PR), and its relation to tumors with triple negative profile in Tunisian breast carcinoma. METHODS Immunohistochemistry was used to estimate the rate expression of these receptors. Univariate and multivariate analyses were used to explore the prognostic significance of EGFR in this study. RESULTS The expression rate of EGFR was 28.6%. EGFR expression was inversely correlated to that of ER (P < 0.001). Significant correlations between the expression of EGFR and the high histological Scarff-Bloom-Richardson (SBR) grade (P = 0.038) and also with tumors size (P = 0.041) were observed. The triple negative profile (TN: ER-/PR-/HER2-) was present in 17.3% of cases. EGFR overexpression was positively associated with this clinical aggressive profile (P < 0.001). Survival analysis showed that EGFR expression was associated with poor survival of patients (P = 0.004). In multivariate analysis, EGFR expression (P = 0.035) was found to be independent prognostic factors (significantly correlated to survival). CONCLUSION EGFR overexpression was observed in 28.6% of Tunisian breast carcinoma, associated with unfavorable prognosis and with triple negative tumors. Systemically evaluation of EGFR in breast carcinoma could benefit especially to TN subgroup from EGFR targeting agents.
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Affiliation(s)
- Imen Kallel
- Unit of Bioinformatics, Biostatistics and Signalling, Centre of Biotechnology of Sfax, Sfax University, Sfax, Tunisia.
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Kallel I, Kharrat N, Al-fadhly S, Rebai M, Khabir A, Boudawara TS, Rebaï A. HER2 polymorphisms and breast cancer in Tunisian women. Genet Test Mol Biomarkers 2010; 14:29-35. [PMID: 19929405 DOI: 10.1089/gtmb.2009.0069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [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] Open
Abstract
HER2 has been thought to play a critical role in both breast cancer development and progression. Any functional polymorphisms can potentially affect breast cancer risk as well as cancer phenotype and outcome. In our study, we analyzed three polymorphisms in the HER2 gene: the single-nucleotide polymorphism (SNP) HER2 Ile(655)Val as well as another SNP (rs903506) close to it and a new screened dinucleotide repeat H(AC)I4 in intron 4, in a sample of 148 cases and 290 controls from the Tunisian population and investigated their association with breast cancer risk. For the HER2 Ile(655)Val, we found similar allele frequencies between cases and controls (frequency of I allele was 0.92 and 0.91, respectively). The same was observed for the noncoding SNP (rs903506). These two SNPs also showed no association with any clinical parameters, except the association of HER2 Ile(655)Val with tumor size (p = 0.002). But, a significant association was found between the short tandem repeat (STR) [H(AC)I4] and breast cancer risk at both genotypic and allelic levels (p = 0.0004 and p = 0.0001, respectively). Multivariate analysis with binary logistic regression of disease status on genotypes of the three polymorphisms confirmed the association of STR with breast cancer risk (p = 0.016). Therefore, this STR seems to be a promising biomarker in breast cancer and deserves further investigation.
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Affiliation(s)
- Imen Kallel
- Bioinformatics and Signalling Group, Centre de Biotechnologie de Sfax, Sfax, Tunisia
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Rebaï M, Kallel I, Hamza F, Charfeddine S, Kaffel R, Guermazi F, Rebaï A. Association of EGFR and HER2 Polymorphisms with Risk and Clinical Features of Thyroid Cancer. Genet Test Mol Biomarkers 2009; 13:779-84. [DOI: 10.1089/gtmb.2009.0068] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Maha Rebaï
- Unit of Bioinformatics, Biostatistics and Signalling, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Imen Kallel
- Unit of Bioinformatics, Biostatistics and Signalling, Centre of Biotechnology of Sfax, Sfax, Tunisia
| | - Fatma Hamza
- Service of Nuclear Medicine, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Salma Charfeddine
- Service of Nuclear Medicine, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Raja Kaffel
- Service of Nuclear Medicine, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Fadhel Guermazi
- Service of Nuclear Medicine, Habib Bourguiba Hospital, Sfax, Tunisia
| | - Ahmed Rebaï
- Unit of Bioinformatics, Biostatistics and Signalling, Centre of Biotechnology of Sfax, Sfax, Tunisia
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Rebaï M, Kallel I, Charfeddine S, Hamza F, Guermazi F, Rebaï A. Association of polymorphisms in estrogen and thyroid hormone receptors with thyroid cancer risk. J Recept Signal Transduct Res 2009; 29:113-8. [PMID: 19519176 DOI: 10.1080/10799890902845682] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The receptors for thyroid hormone (THR) and oestrogen (ESR) are prototypes of nuclear transcription factors that regulate the expression of target genes. Genetic alterations in the genes of these receptors were found to be involved in cancer development. In this study we investigated the association of one SNP (rs2228480, T594T) and one microsatellite marker (D6S440) within the ESR1 gene and a dinucleotide repeat (D17S2189) within the THRA gene, with thyroid cancer risk. A case-control association study was conducted with 299 healthy individuals and 106 patients with thyroid cancer. Genotypic and allelic frequencies for the dinucleotide repeat in the ESR1 gene were similar between thyroid cancer patients and controls. For the AC repeat in the THRA gene, a slightly significant difference was found for the genotype 18/20 between the two groups (P = 0.034), which suggests that alleles with less than 20 repeats might have a protective effect in thyroid cancer risk. For the SNP T594T, the A allele was much more prevalent in patients than in controls and was highly associated with the risk of thyroid cancer (OR: 4,56; IC: 3.23-6.44; P < 10(-18)) and seems to have an additive mode of action. In conclusion, our data suggest that the SNP T594T but not the D6S440 and D17S189 is associated with thyroid cancer risk.
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Affiliation(s)
- Maha Rebaï
- Unit of Bioinformatics, Biostatistics and Signalling, Centre de Biotechnologie de Sfax, Sfax, Tunisia
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Khabir A, Kallel I, Ellouze S, Abdennadher R, Sellami A, Makni S, Gouaa N, Bahri I, Ayadi L, Rebai A, Boudawara T. Expression d’EGFR et son implication pronostique dans les carcinomes mammaires : étude de 62 cas. Ann Pathol 2006. [DOI: 10.1016/s0242-6498(06)78525-x] [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: 11/29/2022]
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