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Redouane S, Charoute H, Harmak H, Malki A, Barakat A, Rouba H. Computational study of the potential impact of AURKC missense SNPs on AURKC-INCENP interaction and their correlation to macrozoospermia. J Biomol Struct Dyn 2023; 41:9503-9522. [PMID: 36326488 DOI: 10.1080/07391102.2022.2142846] [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: 06/24/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Aurora Kinase C (AURKC) is considered an important element in Chromosome Passenger Complex (CPC), its interaction with Inner Centromere Protein (INCENP) plays a critical role in the establishment and the recruitment of a stable CPC during spermatogenesis. Genetic variations of AURKC gene are susceptible to impact AURKC-INCENP interaction, which may affect CPC stability and predispose male subjects to macrozoospermia. In this study, we systematically applied computational approaches using different bioinformatic tools to predict the effect of missense SNPs reported on AURKC gene, we selected the deleterious ones and we introduced their corresponding amino acid substitutions on AURKC protein structure. Then we did a protein-protein docking between AURKC variants and INCENP followed by a structural assessment of each resulting complex using PRODIGY server, Yassara view, Ligplot + and we choose the complexes of the most impactful variants for molecular dynamics (MD) simulation study. Seventeen missense SNPs of AURKC were identified as deleterious between all reported ones. All of them were located on relatively conserved positions on AURKC protein according to Consurf server. Only the four missense SNPs; E91K, D166V, D221Y and G235V were ranked as the most impactful ones and were chosen for MD simulation. D221Y and G235V were responsible for the most remarkable changes on AURKC-INCENP structural stability, therefore, they were selected as the most deleterious ones. Experimental studies are recommended to test the actual effect of these two variants and their actual impact on the morphology of sperm cells.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Salaheddine Redouane
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratory of Physiopathology and Molecular Genetics, Department of Biology, Faculty of Sciences Ben M'Sik, Hassan II University, Casablanca, Morocco
| | - Hicham Charoute
- Research Unit of Epidemiology, Biostatistics and Bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Houda Harmak
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abderrahim Malki
- Laboratory of Physiopathology and Molecular Genetics, Department of Biology, Faculty of Sciences Ben M'Sik, Hassan II University, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
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Redouane S, Harmak H, Elkarhat Z, Charoute H, Malki A, Barakat A, Rouba H. Exploring the impact of CYP11A1's missense SNPs on the interaction between CYP11A1 and cholesterol: A comprehensive structural analysis and MD simulation study. Comput Biol Chem 2023; 106:107937. [PMID: 37552904 DOI: 10.1016/j.compbiolchem.2023.107937] [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: 05/28/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/10/2023]
Abstract
The process of steroidogenesis plays a vital role in human physiology as it governs the biosynthesis of mineralocorticoids, glucocorticoids, and androgens. These three classes of steroid hormones are primarily produced in the adrenal and gonadal glands through steroidogenesis pathways. Initiated by the side chain cleavage of cholesterol (CLR), this process leads to the conversion of cholesterol into pregnenolone and isocaproic aldehyde. The enzyme CYP11A1, encoded by the CYP11A1 gene, plays a key role in catalyzing the side chain cleavage of CLR. Several single nucleotide polymorphisms (SNPs) have been identified in the CYP11A1 gene, which may predispose carriers to disorders associated with abnormal steroidogenesis. Specifically, missense SNPs in the CYP11A1 gene have the potential to negatively impact the interaction between CYP11A1 and CLR, thus affecting the overall metabolome of steroid hormones. In this computational study, we focused on a specific set of missense SNPs reported in the CYP11A1 gene, aiming to identify variants that directly impact the interaction between CYP11A1 and CLR. The three-dimensional structure of the CYP11A1-CLR complex was obtained from the RCSB Protein Data Bank, while missense SNPs in the CYP11A1 gene were retrieved from Ensembl. To predict the most deleterious variants, we utilized the ConSurf server, SIFT, and PolyPhen. Furthermore, we assessed the impact of induced amino acid (AA) substitutions on the CYP11A1-CLR interaction using the PRODIGY server, PyMol, and Ligplot programs. Additionally, molecular dynamics (MD) simulations were conducted to analyze the effects of deleterious variants on the structural dynamics of the CYP11A1-CLR complex. Among the 8096 retrieved variants, we identified ten missense SNPs (E91K, W147G, R151W, R151Q, S391C, V392M, Q395K, Q416E, R460W, and R460Q) as deleterious for the interaction between CYP11A1 and CLR. MD simulations of the CYP11A1-CLR complexes carrying these deleterious AA substitutions revealed that Q416E, W147G, R460Q, and R460W had the most pronounced impacts on the structural dynamics of the complex. Consequently, these missense SNPs were considered the most deleterious ones. Further functional tests are recommended to assess the impact of these four missense SNPs on the enzymatic activity of CYP11A1. Moreover, Genome-Wide Association Studies (GWAS) should be conducted to determine the significance of their association with abnormal steroidogenesis diseases in various patient groups.
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Affiliation(s)
- Salaheddine Redouane
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco; Laboratory of Physiopathology and Molecular Genetics, Department of Biology, Faculty of Sciences Ben M'Sik, Hassan II University, Casablanca, Morocco.
| | - Houda Harmak
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Research Unit of Epidemiology, Biostatistics and Bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abderrahim Malki
- Laboratory of Physiopathology and Molecular Genetics, Department of Biology, Faculty of Sciences Ben M'Sik, Hassan II University, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
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Harmak H, Redouane S, Charoute H, Aniq Filali O, Barakat A, Rouba H. In silico exploration and molecular dynamics of deleterious SNPs on the human TERF1 protein triggering male infertility. J Biomol Struct Dyn 2023; 41:14665-14688. [PMID: 36995171 DOI: 10.1080/07391102.2023.2193995] [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: 11/15/2022] [Accepted: 02/18/2023] [Indexed: 03/31/2023]
Abstract
By limiting chromosome erosion and end-to-end fusions, telomere integrity is critical for chromosome stability and cell survival. During mitotic cycles or due to environmental stresses, telomeres become progressively shorter and dysfunctional, thus triggering cellular senescence, genomic instability and cell death. To avoid such consequences, the telomerase action, as well as the Shelterin and CST complexes, assure the telomere's protection. Telomeric repeat binding factor 1 (TERF1), which is one of the primary components of the Shelterin complex, binds directly to the telomere and controls its length and function by regulating the telomerase activity. Several reports about TERF1 gene variations have been associated with different diseases, and some of them have linked these variations to male infertility. Hence, this paper can be advantageous to investigate the association between the missense variants of the TERF1 gene and the susceptibility to male infertility. The stepwise prediction of SNPs pathogenicity followed in this study was based on stability and conservation analysis, post-translational modification, secondary structure, functional interaction prediction, binding energy evaluation and finally molecular dynamic simulation. Prediction matching among the tools revealed that out of 18 SNPs, only four (rs1486407144, rs1259659354, rs1257022048 and rs1320180267) were predicted as the most damaging and highly deleterious SNPs affecting the TERF1 protein and its molecular dynamics when interacting with the TERB1 protein by influencing the function, structural stability, flexibility and compaction of the overall complex. Interestingly, these polymorphisms should be considered during genetic screening so they can be used effectively as genetic biomarkers for male infertility diagnosis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Houda Harmak
- Laboratory of Genomics and Human Genetics, 1, Place Louis Pasteur, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratory of Physiopathology, Molecular Genetics and Biotechnology, Department of Biology, Faculty of Sciences Ain Chock, Hassan II University, Casablanca, Morocco
| | - Salaheddine Redouane
- Laboratory of Genomics and Human Genetics, 1, Place Louis Pasteur, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Research Unit of Epidemiology, Biostatistics and Bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Ouafaa Aniq Filali
- Laboratory of Physiopathology, Molecular Genetics and Biotechnology, Department of Biology, Faculty of Sciences Ain Chock, Hassan II University, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, 1, Place Louis Pasteur, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, 1, Place Louis Pasteur, Institut Pasteur du Maroc, Casablanca, Morocco
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Krami AM, Ratib C, Charoute H, Rouba H, Roky R, Barakat A, Nahili H. Association between G2677T/A polymorphism in ABCB1 gene and the risk of drug resistance epilepsy: An updated systematic review and meta-analysis. Epilepsy Res 2022; 185:106977. [PMID: 35853334 DOI: 10.1016/j.eplepsyres.2022.106977] [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: 11/30/2020] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 11/18/2022]
Abstract
PURPOSE Epilepsy is a common serious brain condition characterized by the abnormal electrical activity of neurons. In most cases, epileptic patients respond to antiepileptic drugs. Approximately, one-third of patients prove medically intractable. The ABCB1 gene is a superfamily of ATP-binding cassette (ABC) transporters that encode a drug-transport protein, lead to cells and organs protects and eliminates toxic agents. We performed this meta-analysis to assess the association between G2677T/A in the ABCB1 gene and the risk of drug resistance in epileptic patients. METHODS Two online libraries (PubMed and Scopus) were used to identify studies that report the relationship between G2677T/A polymorphism in the MDR1 gene and the risk of antiepileptic drug resistance. The meta-analysis was performed using Review Manager 5.3 software. The pooled odds ratios and 95 % confidence intervals (CIs) were calculated using a random or fixed effects model according to the heterogeneity between studies. RESULTS A total of 33 eligible studies were included in this meta-analysis which 4192 patients were drug-resistant and 5079 patients were drug-responsive. As a result, a significant association was observed in overall population for the genetic model GG+GA vs AA (OR with 95 % CI = 0,56 [0.34,0.93]; P = 0.02). The subgroup ethnicity analysis showed a significant decrease in the risk of AEDs resistance in the Caucasian population. CONCLUSION In conclusion, our analysis demonstrates that G2677T/A polymorphism in the ABCB1 gene decreases the risk of drug resistance. More studies are needed in the different ethnic groups to clarify the role of polymorphism in AEDs resistance.
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Affiliation(s)
- Al Mehdi Krami
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, 20360, Casablanca, Morocco; Laboratory of Physiopathology, Molecular Genetics & Biotechnology, Faculty of Sciences Ain Chock, Health and Biotechnology Research Centre, Hassan II University of Casablanca, Maarif B.P 5366, Casablanca, Morocco
| | - Chorouk Ratib
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, 20360, Casablanca, Morocco; Laboratory of Biotechnology environment and health, Faculty of Science El Jadida, Morocco
| | - Hicham Charoute
- Research unit of Epidemiology, Biostatistics and Bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco.
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, 20360, Casablanca, Morocco
| | - Rachida Roky
- Laboratory of Physiopathology, Molecular Genetics & Biotechnology, Faculty of Sciences Ain Chock, Health and Biotechnology Research Centre, Hassan II University of Casablanca, Maarif B.P 5366, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, 20360, Casablanca, Morocco
| | - Halima Nahili
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, 20360, Casablanca, Morocco
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Krami AM, Bouzidi A, Charif M, Amalou G, Charoute H, Rouba H, Roky R, Lenaers G, Barakat A, Nahili H. A homozygous nonsense HECW2 variant is associated with neurodevelopmental delay and intellectual disability. Eur J Med Genet 2022; 65:104515. [PMID: 35487419 DOI: 10.1016/j.ejmg.2022.104515] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 03/07/2022] [Accepted: 04/23/2022] [Indexed: 11/17/2022]
Abstract
Intellectual disability is characterized by a significant impaired intellectual and adaptive functioning, affecting approximately 1-3% of the population, which can be caused by a variety of environmental and genetic factors. In this respect, de novo heterozygous HECW2 variants were associated recently with neurodevelopmental disorders associated to hypotonia, seizures, and absent language. HECW2 encodes an E3 ubiquitin-protein ligase that stabilizes and enhances transcriptional activity of p73, a key factor regulating proliferation, apoptosis, and neuronal differentiation, which are together essential for proper brain development. Here, using whole exome sequencing, we identified a homozygous nonsense HECW2 variant: c.736C > T; p.Arg246* in a proband from a Moroccan consanguineous family, with developmental delay, intellectual disability, hypotonia, generalized tonico-clonic seizures and a persistent tilted head. Thus this study describes the first homozygous HECW2 variant, inherited as an autosomal recessive pattern, contrasting with former reported de novo variants found in HECW2 patients.
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Affiliation(s)
- Al Mehdi Krami
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; Laboratory of Physiopathology, Molecular Genetics & Biotechnology, Faculty of Sciences Ain Chock, Health and Biotechnology Research Centre, Hassan II University of Casablanca, Maarif B.P, 5366, Casablanca, Morocco.
| | - Aymane Bouzidi
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; Université Angers, MitoLab Team, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, SFR ICAT, Angers, France; Team of Anthropogenetics and Biotechnologies, Faculty of Sciences, Chouaïb Doukkali University, El Jadida, Morocco
| | - Majida Charif
- Genetics and Immuno-Cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; Université Angers, MitoLab Team, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, SFR ICAT, Angers, France; Team of Anthropogenetics and Biotechnologies, Faculty of Sciences, Chouaïb Doukkali University, El Jadida, Morocco
| | - Hicham Charoute
- Research Unit of Epidemiology, Biostatistics and Bioinfortmatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Rachida Roky
- Laboratory of Physiopathology, Molecular Genetics & Biotechnology, Faculty of Sciences Ain Chock, Health and Biotechnology Research Centre, Hassan II University of Casablanca, Maarif B.P, 5366, Casablanca, Morocco
| | - Guy Lenaers
- Université Angers, MitoLab Team, UMR CNRS 6015, INSERM U1083, Institut MitoVasc, SFR ICAT, Angers, France; Service de Neurologie, CHU d'Angers, Angers, France
| | - Abdelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Halima Nahili
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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AitRaise I, Amalou G, Bousfiha A, Charoute H, Rouba H, Abdelghaffar H, Bonnet C, Petit C, Barakat A. Genetic heterogeneity in GJB2, COL4A3, ATP6V1B1 and EDNRB variants detected among hearing impaired families in Morocco. Mol Biol Rep 2022; 49:3949-3954. [PMID: 35301649 DOI: 10.1007/s11033-022-07245-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 08/23/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Deafness is the most prevalent human sensorineural defect. It may occur as a result of an external auditory canal involvement, or a deficiency in the sound conduction mechanism, or an impairment of the cochlea, the cochlear nerve or central auditory perception. The genetic causes are the most common, as approximately 70% of hearing disorders are of hereditary origin, divided into two groups, syndromic (associated with other symptoms) and no syndromic (isolated deafness). METHODS A whole exome sequencing was performed to identify the genetic cause of hearing loss in six Moroccan families and Sanger sequencing was used to validate mutations in these genes. THE RESULTS The results of four out of the six families revealed four genetic variants in the genes GJB2, COL4A3, ATP6V1B1 and EDNRB responsible for non-syndromic and syndromic hearing loss. Multiple Bioinformatics programs and molecular modelling predicted the pathogenic effect of these mutations. CONCLUSIONS We identified in Moroccan deaf patients four homozygous mutations. These results show the importance of whole exome sequencing to identify pathogenic mutations in heterogeneous disorders with multiple genes responsible.
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Affiliation(s)
- Imane AitRaise
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Biochimie, Environnement et Agroalimentaire, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amale Bousfiha
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de physiopathologie et génétique moléculaire, Faculté des Sciences Ben M'sik, Université Hassan II, Casablanca, Morocco
| | - Hicham Charoute
- Research unit of epidemiology, biostatistics and bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratoire de Biochimie, Environnement et Agroalimentaire, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Crystel Bonnet
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France
| | - Christine Petit
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France.,Institut de l'Audition, 75012, Paris, France.,Collège de France, 75005, Paris, France
| | - Adbelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
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Charoute H, Elkarhat Z, Elkhattabi L, El Fahime E, Oukkache N, Rouba H, Barakat A. Computational screening of potential drugs against COVID-19 disease: the Neuropilin-1 receptor as molecular target. Virusdisease 2022; 33:23-31. [PMID: 35079600 PMCID: PMC8776366 DOI: 10.1007/s13337-021-00751-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 11/01/2021] [Indexed: 12/28/2022] Open
Abstract
The transmembrane receptor Neuropilin-1 (NRP-1) was reported to serve as a host cell entry factor for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causal agent of COVID-19 disease. Therefore, molecular compounds interfering with SARS-CoV-2 binding to NRP-1 seem to be potential candidates as new antiviral drugs. In this study, NRP-1 receptor was targeted using a library of 1167 compounds previously analyzed in COVID-19 related studies. The results show the effectiveness of Nafamostat, Y96, Selinexor, Ebastine and UGS, in binding to NRP-1 receptor, with docking scores lower than − 8.2 kcal/mol. These molecules interact with NRP-1 receptor key residues, which makes them promising drugs to pursue further biological assays to explore their potential use in the treatment of COVID-19.
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Affiliation(s)
- Hicham Charoute
- Research Unit of Epidemiology, Biostatistics and Bioinformatics, 1, Place Louis Pasteur, Institut Pasteur du Maroc, 20360 Casablanca, Morocco
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Elmostafa El Fahime
- Molecular Biology and Functional Genomics Platform, National Center for Scientific and Technical Research, Rabat, Morocco
| | - Naoual Oukkache
- Laboratory of Venoms and Toxins, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
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Elkarhat Z, Charoute H, Elkhattabi L, Barakat A, Rouba H. Potential inhibitors of SARS-cov-2 RNA dependent RNA polymerase protein: molecular docking, molecular dynamics simulations and MM-PBSA analyses. J Biomol Struct Dyn 2020; 40:361-374. [PMID: 32873176 DOI: 10.1080/07391102.2020.1813628] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The SARS-cov-2 RNA dependent RNA polymerase (nsp12) is a crucial viral enzyme that catalyzes the replication of RNA from RNA templates. The fixation of some ligands in the active site may alter the viral life cycle. The aim of the present study is to identify the conservation level of nsp12 motifs (A-G), using consurf server, and discover their interactions with rifabutin, rifampicin, rifapentin, sorangicin A, streptolydigin, myxopyronin B, VXR and VRX using AutoDockTools-1.5.6, Gromacs 2018.2 and g-mmpbsa. Thus, the most of amino acids residues located in nsp12 protein Motifs (A-G) were predicted as highly conserved. The binding energies of streptolydigin, VXR, rifabutin, rifapentine, VRX, sorangicin A, myxopyronin B and rifampicin with nsp12 protein are -8.11, -8.23, -7.14, -6.94, -6.55, -5.46, -5.33 and -5.26 kcal/mol, respectively. In the other hand, the binding energies of ligand in the same order with nsp7-nsp8-nsp12 complex are -7.23, -7.08, -7.21, -7, -6.59, -8.73, -5.52, -5.87 kcal/mol, respectively. All ligands interact with at least two nsp12 motifs. The molecular dynamics simulation of nsp12-streptolydigin and nsp12-VXR complexes shows that these two complexes are stable and the number of hydrogen bonds as a function of time, after 30 ns of simulation, varies between 0 and 6 for nsp12-streptolydigin complex and between 0 and 4 for nsp12-VXR complex. The average of free binding energies obtained using g_mmpbsa, after 30 ns of simulation, is -191.982 Kj/mol for nsp12-streptolydigin complex and -153.583 Kj/mol for nsp12-VXR complex. Our results suggest that these ligands may be used as inhibitors of SARS-cov-2 nsp12 protein.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
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Morjane I, Charoute H, Ouatou S, Elkhattabi L, Benrahma H, Saile R, Rouba H, Barakat A. Association of c.56C > G (rs3135506) Apolipoprotein A5 Gene Polymorphism with Coronary Artery Disease in Moroccan Subjects: A Case-Control Study and an Updated Meta-Analysis. Cardiol Res Pract 2020; 2020:5981971. [PMID: 32832146 PMCID: PMC7424381 DOI: 10.1155/2020/5981971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 02/29/2020] [Accepted: 03/03/2020] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Coronary artery diseases (CAD) are clinical cardiovascular events associated with dyslipidemia in common. The interaction between environmental and genetic factors can be responsible for CAD. The present paper aimed to examine the association between c.56C > G (rs3135506) APOA5 gene polymorphism and CAD in Moroccan individuals and to perform an association update meta-analysis. MATERIALS AND METHODS The c.56C > G variant was genotyped in 122 patients with CAD and 134 unrelated controls. Genetic association analysis and comparison of biochemical parameters were performed using R statistical language. In addition, a comprehensive meta-analysis including eleven published studies in addition to our case-control study results was conducted using Review Manager 5.3. Publication bias was examined by Egger's test and funnel plot. RESULTS The case-control study data showed that the c.56C > G polymorphism was associated with CAD susceptibility under codominant (P-value = 0.001), recessive (P-value <0.001) and log-additive (P-value = 0.008) inheritance models. In addition, this polymorphism was significantly associated with increased levels of systolic and diastolic blood pressures, triglycerides, glycemia, and total cholesterol. Furthermore, meta-analysis showed a significant association between the c.56C > G gene polymorphism and increased risk of CAD under recessive (OR = 3.39[1.77-6.50], P value <0.001) and homozygote codominant (OR = 3.96[2.44-6.45], P value <0.001) models. CONCLUSION Our case-control study revealed a significant association between c.56C > G polymorphism and CAD in the Moroccan population. In addition, meta-analysis data supported the implication of this polymorphism in CAD susceptibility.
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Affiliation(s)
- Imane Morjane
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
- Laboratory of Biology and Health, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
| | - Sanaa Ouatou
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
- Laboratory of Biology and Health, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Houda Benrahma
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
- National Reference Laboratory (LNR), Faculty of Medicine, Mohammed VI University of Health Sciences (UM6SS), Casablanca, Morocco
| | - Rachid Saile
- Laboratory of Biology and Health, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur Du Maroc, Casablanca, Morocco
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Elkarhat Z, Elkhattabi L, Charoute H, Morjane I, Errouagui A, Carey F, Nasser B, Barakat A, Rouba H. Identification of deleterious missense variants of human Piwi like RNA-mediated gene silencing 1 gene and their impact on PAZ domain structure, stability, flexibility and dimension: in silico analysis. J Biomol Struct Dyn 2019; 38:4600-4606. [DOI: 10.1080/07391102.2019.1678522] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
- Faculty of Science and Technology, Laboratory of Neuroscience and Biochemistry, Settat, Morocco
| | - Lamiaa Elkhattabi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Imane Morjane
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abdellatif Errouagui
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Francis Carey
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Boubker Nasser
- Faculty of Science and Technology, Laboratory of Neuroscience and Biochemistry, Settat, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
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Elkarhat Z, Belkady B, Charoute H, Zarouf L, Razoki L, Aboulfaraj J, Nassereddine S, Elbakay C, Nasser B, Barakat A, Rouba H. Cytogenetic profile of patients with clinical spectrum of ambiguous genitalia, amenorrhea, and Turner phenotype: A 21-year single-center experience. Am J Med Genet A 2019; 179:1516-1524. [PMID: 31207162 DOI: 10.1002/ajmg.a.61257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 09/20/2018] [Revised: 04/03/2019] [Accepted: 05/21/2019] [Indexed: 12/19/2022]
Abstract
The aim of the present study was to determine the frequency and nature of chromosomal abnormalities involved in patients with the clinical spectrum of ambiguous genitalia (AG), amenorrhea, and Turner phenotype, in order to compare them with those reported elsewhere. The study was conducted in the Cytogenetic Department of Pasteur Institute of Morocco, and it reports on the patients who were recruited between 1996 and 2016. Cytogenetic analysis was performed according to the standard method. Among 1,415 patients, chromosomal abnormalities were identified in 7.13% (48/673) of patients with AG, 17.39% (28/161) of patients with primary amenorrhea (PA), 4% (1/25) of patients with secondary amenorrhea, and 23.20% (129/556) of patients with Turner phenotype. However, Turner syndrome was diagnosed in 0.89% (6/673) of patients with AG, 10.56% (17/161) of patients with PA, and 19.78% (110/556) of patients with Turner phenotype. In addition, Klinefelter syndrome and mixed gonadal dysgenesis were confirmed in 2.97% and 1.93% of patients, respectively, with AG, while, chimerism, trisomy 8, and trisomy 13 were confirmed only in 0.15% each. Trisomy 21 was confirmed in patients with AG and Turner phenotype (0.15% and 0.36%, respectively). Moreover, 5.60% (9/161) of patients with PA have been diagnosed as having sex reversal. Thus, the frequency of chromosomal abnormalities observed in Moroccan patients with PA is comparable to that reported in Tunisia, Turkey, Iran, and Hong Kong. However, the frequency is significantly less than that identified in India, Malaysia, Italy, and Romania.
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Affiliation(s)
- Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratory of Neuroscience and Biochemistry, Faculty of Science and Technology, University Hassan 1er, Settat, Morocco
| | - Boutaina Belkady
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Latifa Zarouf
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lunda Razoki
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Jamila Aboulfaraj
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Sanaa Nassereddine
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Chadli Elbakay
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Boubker Nasser
- Laboratory of Neuroscience and Biochemistry, Faculty of Science and Technology, University Hassan 1er, Settat, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
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Belkady B, Elkhattabi L, Elkarhat Z, Zarouf L, Razoki L, Aboulfaraj J, Nassereddine S, Cadi R, Rouba H, Barakat A. Chromosomal Abnormalities in Patients with Intellectual Disability: A 21-Year Retrospective Study. Hum Hered 2019; 83:274-282. [PMID: 31064002 DOI: 10.1159/000499710] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 03/19/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Intellectual disability (ID) has been defined as a considerably reduced ability to understand new or complex information and to learn new skills. It is associated with life-long intellectual and adaptive functioning impairments that have a profound impact on individuals, families, and society. It affects about 3% of the general population. ID often comes out with other mental conditions like attention deficit, hyperactivity, and autism spectrum disorders (ASD), and it can be part of a malformation syndrome that affects other organs. It may be syndromic (S-ID) or non-syndromic (NS-ID). OBJECTIVE The aims of this study were to identify the profile of intellectually disable patients being referred for cytogenetic analysis in Morocco, to determine the prevalence of chromosomal abnormalities in a Moroccan group, and to compare the results with those of analogous studies from other countries. PARTICIPANTS We included data from Moroccan patients with NS-ID and others with S-ID (mostly Down syndrome cases) who have been referred between 1996 and 2016. 1,626 patients were involved in this study, 1,200 were referred with a clinical diagnosis of Down syndrome, 37 were clinically diagnosed for ASD with ID, and 389 were suspected of NS-ID. RESULTS We identified 1,200 cases of Down syndrome. In 1,096 analyses (91.3%), a cytogenetic variant of trisomy 21 was identified: standard trisomy 21 in 1,037 cases (94.6%), a translocation in 34 cases (3.10%), and mosaicism in 25 cases (2.3%). The cytogenetic analysis among ASD with ID cases did not reveal any specific chromosomal abnormalities. The present study also shows that chromosomal abnormalities were present in 6.43% of the patients with NS-ID (25 abnormal karyotypes out of 389 NS-ID cases). Autosomal structural abnormalities were the largest proportion of chromosomal aberrations. CONCLUSION The high rate of chromosomal abnormalities found in the Moroccan patients studied demonstrates the capital importance of cytogenetic evaluation in patients who show ID or any clinical development abnormality.
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Affiliation(s)
- Boutaina Belkady
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratory of Molecular Genetics and Biotechnology, Faculty of Science Ain Chock, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Zouhair Elkarhat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Latifa Zarouf
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lunda Razoki
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Jamila Aboulfaraj
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Sanaa Nassereddine
- Laboratory of Cytogenetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Rachida Cadi
- Laboratory of Molecular Genetics and Biotechnology, Faculty of Science Ain Chock, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco,
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Elkhattabi L, Morjane I, Charoute H, Amghar S, Bouafi H, Elkarhat Z, Saile R, Rouba H, Barakat A. In Silico Analysis of Coding/Noncoding SNPs of Human RETN Gene and Characterization of Their Impact on Resistin Stability and Structure. J Diabetes Res 2019; 2019:4951627. [PMID: 31236417 PMCID: PMC6545779 DOI: 10.1155/2019/4951627] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/25/2019] [Accepted: 04/01/2019] [Indexed: 12/20/2022] Open
Abstract
Resistin (RETN) is a gene coding for proinflammatory adipokine called resistin secreted by macrophages in humans. Single nucleotide polymorphisms (SNPs) in RETN are linked to obesity and insulin resistance in various populations. Using dbSNP, 78 nonsynonymous SNPs (nsSNPs) were retrieved and tested on a PredictSNP 1.0 megaserver. Among these, 15 nsSNPs were predicted as highly deleterious and thus subjected to further analyses, such as conservation, posttranscriptional modifications, and stability. The 3D structure of human resistin was generated by homology modeling using Swiss model. Root-mean-square deviation (RMSD), hydrogen bonds (h-bonds), and interactions were estimated. Furthermore, UTRscan served to identify UTR functional SNPs. Among the 15 most deleterious nsSNPs, 13 were predicted to be highly conserved including variants in posttranslational modification sites. Stability analysis predicted 9 nsSNPs (I32S, C51Y, G58E, G58R, C78S, G79C, W98C, C103G, and C104Y) which can decrease protein stability with at least three out of the four algorithms used in this study. These nsSNPs were chosen for structural analysis. Both variants C51Y and C104Y showed the highest RMS deviations (1.137 Å and 1.308 Å, respectively) which were confirmed by the important decrease in total h-bonds. The analysis of hydrophobic and hydrophilic interactions showed important differences between the native protein and the 9 mutants, particularly I32S, G79C, and C104Y. Six SNPs in the 3'UTR (rs920569876, rs74176247, rs1447199134, rs943234785, rs76346269, and rs78048640) were predicted to be implicated in polyadenylation signal. This study revealed 9 highly deleterious SNPs located in the human RETN gene coding region and 6 SNPs within the 3'UTR that may alter the protein structure. Interestingly, these SNPs are worth to be analyzed in functional studies to further elucidate their effect on metabolic phenotype occurrence.
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Affiliation(s)
- Lamiae Elkhattabi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratoire de Biologie et Santé, Faculté des Sciences Ben M'Sik, Université Hassan II de Casablanca, Morocco
| | - Imane Morjane
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratoire de Biologie et Santé, Faculté des Sciences Ben M'Sik, Université Hassan II de Casablanca, Morocco
| | - Hicham Charoute
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Soumaya Amghar
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hind Bouafi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratoire de Biologie et Santé, Faculté des Sciences Ben M'Sik, Université Hassan II de Casablanca, Morocco
| | - Zouhair Elkarhat
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Rachid Saile
- Laboratoire de Biologie et Santé, Faculté des Sciences Ben M'Sik, Université Hassan II de Casablanca, Morocco
| | - Hassan Rouba
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Abdelhamid Barakat
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
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Elrharchi S, Riahi Z, Salime S, Nahili H, Rouba H, Kabine M, Bonnet C, Petit C, Barakat A. Two novel homozygous missense mutations identified in the BSND gene in Moroccan patients with Bartter's syndrome. Int J Pediatr Otorhinolaryngol 2018; 113:46-50. [PMID: 30174009 DOI: 10.1016/j.ijporl.2018.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/05/2018] [Accepted: 07/07/2018] [Indexed: 11/18/2022]
Abstract
OBJECTIVES Hearing loss (HL) is one of the most common sensorineural disorders. In the present study, we identified two novel missense mutations in BSND gene causing Bartter syndrome type IV which is a genetic disease with an autosomal recessive transmission, characterized by hypokalaemia, metabolic alkalosis, an elevation in plasma renin activity and hyperaldosteronism as well as sensorineural deafness. METHODS Whole-exome sequencing was performed to study the genetic causes of Hearing loss in two unrelated patients from two Moroccan families. RESULTS The two novel homozygous mutations p.Arg8Gly (c.22C > G), p.Thr36Asn (c.107C > A) in exon 1 of BSND gene which encodes barttin were identified in 7 patients belonging to two unrelated families originated from central region of Morocco. CONCLUSION We identified two novel missense mutations p.Arg8Gly and p.Thr36Asn in exon 1 of BSND gene; both mutations were described for the first time in Moroccan patients with Bartter syndrome type IV.
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Affiliation(s)
- Soukaina Elrharchi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco; Laboratoire de santé et environnement, Faculté des Sciences Ain Chock, Université Hassan II, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France; UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Sara Salime
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Halima Nahili
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Mostafa Kabine
- Laboratoire de santé et environnement, Faculté des Sciences Ain Chock, Université Hassan II, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France; UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France; UPMC-Sorbonnes Universités Paris VI, Paris, France; Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France; Collège de France, Paris, France
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.
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Portnoi MF, Dumargne MC, Rojo S, Witchel SF, Duncan AJ, Eozenou C, Bignon-Topalovic J, Yatsenko SA, Rajkovic A, Reyes-Mugica M, Almstrup K, Fusee L, Srivastava Y, Chantot-Bastaraud S, Hyon C, Louis-Sylvestre C, Validire P, de Malleray Pichard C, Ravel C, Christin-Maitre S, Brauner R, Rossetti R, Persani L, Charreau EH, Dain L, Chiauzzi VA, Mazen I, Rouba H, Schluth-Bolard C, MacGowan S, McLean WHI, Patin E, Rajpert-De Meyts E, Jauch R, Achermann JC, Siffroi JP, McElreavey K, Bashamboo A. Mutations involving the SRY-related gene SOX8 are associated with a spectrum of human reproductive anomalies. Hum Mol Genet 2018; 27:1228-1240. [PMID: 29373757 PMCID: PMC6159538 DOI: 10.1093/hmg/ddy037] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 12/14/2017] [Accepted: 01/18/2018] [Indexed: 11/13/2022] Open
Abstract
SOX8 is an HMG-box transcription factor closely related to SRY and SOX9. Deletion of the gene encoding Sox8 in mice causes reproductive dysfunction but the role of SOX8 in humans is unknown. Here, we show that SOX8 is expressed in the somatic cells of the early developing gonad in the human and influences human sex determination. We identified two individuals with 46, XY disorders/differences in sex development (DSD) and chromosomal rearrangements encompassing the SOX8 locus and a third individual with 46, XY DSD and a missense mutation in the HMG-box of SOX8. In vitro functional assays indicate that this mutation alters the biological activity of the protein. As an emerging body of evidence suggests that DSDs and infertility can have common etiologies, we also analysed SOX8 in a cohort of infertile men (n = 274) and two independent cohorts of women with primary ovarian insufficiency (POI; n = 153 and n = 104). SOX8 mutations were found at increased frequency in oligozoospermic men (3.5%; P < 0.05) and POI (5.06%; P = 4.5 × 10-5) as compared with fertile/normospermic control populations (0.74%). The mutant proteins identified altered SOX8 biological activity as compared with the wild-type protein. These data demonstrate that SOX8 plays an important role in human reproduction and SOX8 mutations contribute to a spectrum of phenotypes including 46, XY DSD, male infertility and 46, XX POI.
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Affiliation(s)
- Marie-France Portnoi
- APHP Département de Génétique Médicale, Hôpital Armand Trousseau, Paris
75012, France
- UPMC, University Paris 06, INSERM UMR_S933, Hôpital Armand Trousseau,
Paris 75012, France
| | | | - Sandra Rojo
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris
75724, France
| | - Selma F Witchel
- Division of Pediatric Endocrinology, Children’s Hospital of Pittsburgh
of UPMC, Pittsburgh, PA 15224, USA
| | - Andrew J Duncan
- Genetics and Genomic Medicine, UCL Great Ormond Street Institute of
Child Health, London WC1N 1EH, UK
| | - Caroline Eozenou
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris
75724, France
| | | | - Svetlana A Yatsenko
- Department of Obstetrics, Gynecology and Reproductive Sciences,
Magee-Women’s Research Institute
- Department of Human Genetics, University of Pittsburgh School of
Medicine, Pittsburgh, PA 15213, USA
- Department of Pathology, University of Pittsburgh School of Medicine,
Pittsburgh, PA 15213, USA
| | - Aleksandar Rajkovic
- Department of Obstetrics, Gynecology and Reproductive Sciences,
Magee-Women’s Research Institute
- Department of Human Genetics, University of Pittsburgh School of
Medicine, Pittsburgh, PA 15213, USA
- Department of Pathology, University of Pittsburgh School of Medicine,
Pittsburgh, PA 15213, USA
| | - Miguel Reyes-Mugica
- Department of Obstetrics, Gynecology and Reproductive Sciences,
Magee-Women’s Research Institute
- Department of Human Genetics, University of Pittsburgh School of
Medicine, Pittsburgh, PA 15213, USA
- Department of Pathology, University of Pittsburgh School of Medicine,
Pittsburgh, PA 15213, USA
| | - Kristian Almstrup
- University Department of Growth and Reproduction, Rigshospitalet,
DK-2100 Copenhagen, Denmark
| | - Leila Fusee
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris
75724, France
| | - Yogesh Srivastava
- Genome Regulation Laboratory, Drug Discovery Pipeline, South China
Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of
Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
- Key Laboratory of Regenerative Biology, South China Institute for Stem
Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, Guangzhou 510530, China
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative
Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou
Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530,
China
| | - Sandra Chantot-Bastaraud
- APHP Département de Génétique Médicale, Hôpital Armand Trousseau, Paris
75012, France
- UPMC, University Paris 06, INSERM UMR_S933, Hôpital Armand Trousseau,
Paris 75012, France
| | - Capucine Hyon
- APHP Département de Génétique Médicale, Hôpital Armand Trousseau, Paris
75012, France
- UPMC, University Paris 06, INSERM UMR_S933, Hôpital Armand Trousseau,
Paris 75012, France
| | | | - Pierre Validire
- Département d’Anatomie Pathologique, Institut Mutualiste Montsouris,
Paris 75014, France
| | | | - Celia Ravel
- Biology of Reproduction, CHU Rennes, Rennes 35033, France
| | - Sophie Christin-Maitre
- UPMC, University Paris 06, INSERM UMR_S933, Hôpital Armand Trousseau,
Paris 75012, France
- Service d'Endocrinologie, Diabétologie et Endocrinologie de la
Reproduction, Hôpital Saint-Antoine, Paris 75012, France
| | - Raja Brauner
- Université Paris Descartes and Pediatric Endocrinology Unit, Fondation
Ophtalmologique Adolphe de Rothschild, Paris 75019, France
| | - Raffaella Rossetti
- Department of Clinical Sciences & Community Health, University of
Milan, Milan 20122, Italy
- Laboratory of Endocrine & Metabolic Research and Division of
Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan 20149,
Italy
| | - Luca Persani
- Department of Clinical Sciences & Community Health, University of
Milan, Milan 20122, Italy
- Laboratory of Endocrine & Metabolic Research and Division of
Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan 20149,
Italy
| | - Eduardo H Charreau
- Centro Nacional de Genética Médica, Administración Nacional de
Laboratorios e Institutos de Salud (ANLIS) Dr. Carlos G. Malbrán, Buenos Aires C1428ADN,
Argentina
- Department of Physiology, Instituto de Biología y Medicina
Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET),
Buenos Aires C1428ADN, Argentina
| | - Liliana Dain
- Centro Nacional de Genética Médica, Administración Nacional de
Laboratorios e Institutos de Salud (ANLIS) Dr. Carlos G. Malbrán, Buenos Aires C1428ADN,
Argentina
- Department of Physiology, Instituto de Biología y Medicina
Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET),
Buenos Aires C1428ADN, Argentina
| | - Violeta A Chiauzzi
- Centro Nacional de Genética Médica, Administración Nacional de
Laboratorios e Institutos de Salud (ANLIS) Dr. Carlos G. Malbrán, Buenos Aires C1428ADN,
Argentina
- Department of Physiology, Instituto de Biología y Medicina
Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas (IBYME-CONICET),
Buenos Aires C1428ADN, Argentina
| | - Inas Mazen
- Department of Clinical Genetics, National Research Centre, Cairo 12622,
Egypt
| | - Hassan Rouba
- Human Genetics Unit, Institut Pasteur of Morocco, Casablanca 20250,
Morocco
| | | | - Stuart MacGowan
- Centre for Dermatology and Genetic Medicine, School of Life Sciences,
University of Dundee, Dundee DD1 5EH, UK
| | - W H Irwin McLean
- Centre for Dermatology and Genetic Medicine, School of Life Sciences,
University of Dundee, Dundee DD1 5EH, UK
| | - Etienne Patin
- Human Evolutionary Genetics, Institut Pasteur, Paris 75724,
France
| | - Ewa Rajpert-De Meyts
- University Department of Growth and Reproduction, Rigshospitalet,
DK-2100 Copenhagen, Denmark
| | - Ralf Jauch
- Genome Regulation Laboratory, Drug Discovery Pipeline, South China
Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of
Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
- Key Laboratory of Regenerative Biology, South China Institute for Stem
Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health,
Chinese Academy of Sciences, Guangzhou 510530, China
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative
Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou
Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530,
China
| | - John C Achermann
- Genetics and Genomic Medicine, UCL Great Ormond Street Institute of
Child Health, London WC1N 1EH, UK
| | - Jean-Pierre Siffroi
- APHP Département de Génétique Médicale, Hôpital Armand Trousseau, Paris
75012, France
- UPMC, University Paris 06, INSERM UMR_S933, Hôpital Armand Trousseau,
Paris 75012, France
| | - Ken McElreavey
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris
75724, France
| | - Anu Bashamboo
- Human Developmental Genetics, CNRS UMR3738, Institut Pasteur, Paris
75724, France
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Naasse Y, Bakhchane A, Charoute H, Jennane F, Bignon-Topalovic J, Malki A, Bashamboo A, Barakat A, Rouba H, McElreavey K. A Novel Homozygous Missense Mutation in the FU-CRD2 Domain of the R-spondin1 Gene Associated with Familial 46,XX DSD. Sex Dev 2017; 11:269-274. [PMID: 29262419 DOI: 10.1159/000485393] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 10/30/2017] [Indexed: 11/19/2022] Open
Abstract
R-spondin proteins are secreted agonists of canonical WNT/β-catenin signaling. Homozygous RSPO1 mutations cause a syndrome of 46,XX disorder of sexual development (DSD), palmoplantar keratoderma (PPK), and predisposition to squamous cell carcinoma. We report exome sequencing data of two 46,XX siblings, one with testicular DSD and the other with suspected ovotesticular DSD. Both have PPK and hearing impairment and carried a novel homozygous mutation c.332G>A (p.Cys111Tyr) located in the highly conserved furin-like cysteine-rich domain-2 (FU-CRD2). Cysteines in the FU-CRDs are strictly conserved, indicating their functional importance in WNT signaling through interaction with the leucine-rich repeat-containing G-protein-coupled receptors. This is the first RSPO1 missense mutation reported in association with human disease.
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Affiliation(s)
- Yassine Naasse
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
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17
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Bousfiha A, Bakhchane A, Charoute H, Detsouli M, Rouba H, Charif M, Lenaers G, Barakat A. Novel compound heterozygous mutations in the GPR98 (USH2C) gene identified by whole exome sequencing in a Moroccan deaf family. Mol Biol Rep 2017; 44:429-434. [PMID: 28951997 DOI: 10.1007/s11033-017-4129-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 05/19/2016] [Accepted: 09/19/2017] [Indexed: 01/26/2023]
Abstract
In the present work, we identified two novel compound heterozygote mutations in the GPR98 (G protein-coupled receptor 98) gene causing Usher syndrome. Whole-exome sequencing was performed to study the genetic causes of Usher syndrome in a Moroccan family with three affected siblings. We identify two novel compound heterozygote mutations (c.1054C > A, c.16544delT) in the GPR98 gene in the three affected siblings carrying post-linguale bilateral moderate hearing loss with normal vestibular functions and before installing visual disturbances. This is the first time that mutations in the GPR98 gene are described in the Moroccan deaf patients.
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Affiliation(s)
- Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.,Laboratoire des Sciences Biologiques, Filière Technique de Santé, Institution Supérieure des Professions Infirmières et Techniques de Santé (ISPITS), Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Mustapha Detsouli
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Majida Charif
- PREMMI, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers Cedex 9, France
| | - Guy Lenaers
- PREMMI, Mitochondrial Medicine Research Centre, Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers Cedex 9, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco.
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18
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Lakbakbi El Yaagoubi F, Charoute H, Morjane I, Sefri H, Rouba H, Ainahi A, Kandil M, Benrahma H, Barakat A. Association analysis of genetic variants with metabolic syndrome components in the Moroccan population. Curr Res Transl Med 2017; 65:121-125. [DOI: 10.1016/j.retram.2017.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/17/2017] [Accepted: 08/09/2017] [Indexed: 12/17/2022]
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19
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Bakhchane A, Charif M, Bousfiha A, Boulouiz R, Nahili H, Rouba H, Charoute H, Lenaers G, Barakat A. Novel compound heterozygous MYO7A mutations in Moroccan families with autosomal recessive non-syndromic hearing loss. PLoS One 2017; 12:e0176516. [PMID: 28472130 PMCID: PMC5417485 DOI: 10.1371/journal.pone.0176516] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 04/12/2017] [Indexed: 12/12/2022] Open
Abstract
The MYO7A gene encodes a protein belonging to the unconventional myosin super family. Mutations within MYO7A can lead to either non syndromic hearing loss or to the Usher syndrome type 1B (USH1B). Here, we report the results of genetic analyses performed on Moroccan families with autosomal recessive non syndromic hearing loss that identified two families with compound heterozygous MYO7A mutations. Five mutations (c.6025delG, c.6229T>A, c.3500T>A, c.5617C>T and c.4487C>A) were identified in these families, the latter presenting two differently affected branches. Multiple bioinformatics programs and molecular modelling predicted the pathogenic effect of these mutations. In conclusion, the absence of vestibular and retinal symptom in the affected patients suggests that these families have the isolated non-syndromic hearing loss DFNB2 (nonsyndromic autosomal recessive hearing loss) presentation, instead of USH1B.
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Affiliation(s)
- Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Majida Charif
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- Equipe MitoLab, INSERM U1083, CNRS 6015, Institut MitoVasc, Université d’Angers, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Redouane Boulouiz
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Halima Nahili
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Guy Lenaers
- Equipe MitoLab, INSERM U1083, CNRS 6015, Institut MitoVasc, Université d’Angers, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- * E-mail:
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20
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Bousfiha A, Bakhchane A, Charoute H, Riahi Z, Snoussi K, Rouba H, Bonnet C, Petit C, Barakat A. A novel PEX1 mutation in a Moroccan family with Zellweger spectrum disorders. Hum Genome Var 2017; 4:17009. [PMID: 28446956 PMCID: PMC5390255 DOI: 10.1038/hgv.2017.9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 02/03/2017] [Accepted: 02/07/2017] [Indexed: 01/18/2023] Open
Abstract
Mutations in the PEX1 gene are usually associated with recessive inherited diseases including Zellweger spectrum disorders. In this work, we identified a new pathogenic missense homozygous PEX1 mutation (p.Leu1026Pro, c.3077T>C) in two Moroccan syndromic deaf siblings from consanguineous parents. This variation is located in the P-loop containing nucleoside triphosphate hydrolase of protein domain and probably causes an alteration in the hydrolysis of ATP.
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Affiliation(s)
- Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Khalid Snoussi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France.,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Collège de France, Paris, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
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21
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Charoute H, Kefi R, Bounaceur S, Benrahma H, Reguig A, Kandil M, Rouba H, Bakhchane A, Abdelhak S, Barakat A. Novel variants of mitochondrial DNA associated with Type 2 diabetes mellitus in Moroccan population. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 29:9-13. [PMID: 27728995 DOI: 10.1080/24701394.2016.1233530] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this study, we investigated the association of mtDNA variants and haplogroups with Type 2 diabetes (T2D) in Moroccan patients. The Hypervariable Segments 1 of the mtDNA was sequenced in 108 diabetic patients and 97 controls. Association analyses were performed using Fisher's exact test and multivariate logistic regression. The prevalence of five mtDNA variants (C16187T, C16270T, T16172C, A16293G, and C16320T) was significantly higher in cases than in controls. Among these variants, only C16270T (p = .02) and C16320T (p = .03) remains significant after adjusting by age and gender. We showed that C16270T and C16320T variants were strongly associated with increased risk of T2D in Moroccan patients.
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Affiliation(s)
- Hicham Charoute
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Rym Kefi
- b Biomedical Genomics and Oncogenetics Laboratory (LR 11 IPT 05) , Institut Pasteur de Tunis, Université de Tunis El Manar , Tunis , Tunisia
| | - Safaa Bounaceur
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Houda Benrahma
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Ahmed Reguig
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Mostafa Kandil
- c Equipe d'Anthropogénétique et Biotechnologies, Faculté des Sciences , Université Chouaïb Doukkali , El Jadida , Morocco
| | - Hassan Rouba
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Amina Bakhchane
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
| | - Sonia Abdelhak
- b Biomedical Genomics and Oncogenetics Laboratory (LR 11 IPT 05) , Institut Pasteur de Tunis, Université de Tunis El Manar , Tunis , Tunisia
| | - Abdelhamid Barakat
- a Institut Pasteur, Human Molecular Genetic Laboratory , Casablanca , Morocco
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Lakbakbi El Yaagoubi F, Charoute H, Bakhchane A, Ajjemami M, Benrahma H, Errouagui A, Kandil M, Rouba H, Barakat A. Association analysis of APOA5 rs662799 and rs3135506 polymorphisms with obesity in Moroccan patients. ACTA ACUST UNITED AC 2016; 63:243-7. [PMID: 26524954 DOI: 10.1016/j.patbio.2015.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 06/06/2015] [Accepted: 09/29/2015] [Indexed: 01/27/2023]
Abstract
The aim of the present study is to explore the association between the APOA5 polymorphisms and haplotypes with obesity in Moroccan patients. The study was performed in 459 subjects, Obese (n=164) and non-obese (n=295). All subjects were genotyped for the APOA5 -1131T>C (rs662799) and c.56C>G (rs3135506) polymorphisms. The contribution of APOA5 polymorphisms and haplotypes in the increased risk of obesity were explored using logistic regression analyses. The -1131T>C and c.56C>G polymorphisms were significantly associated with obesity. Both polymorphisms were strongly associated with increased BMI. Analysis of constructed haplotypes showed a significant association between CG haplotype and susceptibility to obesity (OR [95%CI]=3.09 [1.93-4.97]; P<0.001). These results support a potential role for APOA5 common variants and related haplotypes as risk factors for obesity.
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Affiliation(s)
- F Lakbakbi El Yaagoubi
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco; Équipe d'anthropogénétique et biotechnologies, faculté des sciences, université Chouaïb Doukkali, El Jadida, Morocco
| | - H Charoute
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Bakhchane
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - M Ajjemami
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - H Benrahma
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Errouagui
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - M Kandil
- Équipe d'anthropogénétique et biotechnologies, faculté des sciences, université Chouaïb Doukkali, El Jadida, Morocco
| | - H Rouba
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco
| | - A Barakat
- Institut Pasteur, laboratoire de génétique moléculaire humaine, Casablanca, Morocco.
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23
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Bashamboo A, Bignon-Topalovic J, Rouba H, McElreavey K, Brauner R. A Nonsense Mutation in the Hedgehog Receptor CDON Associated With Pituitary Stalk Interruption Syndrome. J Clin Endocrinol Metab 2016; 101:12-5. [PMID: 26529631 DOI: 10.1210/jc.2015-2995] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Pituitary stalk interruption syndrome (PSIS) and holoprosencephaly (HPE) are congenital midline defects. Rare mutations in the sonic hedgehog (SHH) signaling gene CDON have recently been reported in patients with HPE. OBJECTIVE To report a unique case of PSIS with a maternally inherited nonsense mutation in the SHH signaling protein CDON. METHOD We performed exome sequencing on a case of PSIS. Control databases (1000 Genomes, dbSNP, Exome Variant Server, ExAC Browser) and an ancestry-matched control panel were screened upon identification of CDON mutation. RESULTS We identified a novel heterozygous nonsense mutation (c.2764T>C, Glu922Ter) in a case of PSIS without HPE who presented with neonatal hypoglycemia and cholestasis associated with GH, TSH, and ACTH deficiencies. This mutation was absent in all control databases and from 400 healthy ancestry-matched control subjects. The mutation was inherited from the patient's mother, who was operated on in childhood for strabismus. The absence of this variant in control samples suggests that it is likely to be responsible for the phenotype. CONCLUSION We report for the first time a mutation in the CDON gene associated with PSIS.
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Affiliation(s)
- A Bashamboo
- Human Developmental Genetics (A.B., J.B.-T., K.M.), Institut Pasteur, 75724 Paris, France; Institut Pasteur of Morocco (H.R.), 20100 Casablanca, Morocco; and Université Paris Descartes and Pediatric Endocrinology Unit (R.B.), Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France
| | - J Bignon-Topalovic
- Human Developmental Genetics (A.B., J.B.-T., K.M.), Institut Pasteur, 75724 Paris, France; Institut Pasteur of Morocco (H.R.), 20100 Casablanca, Morocco; and Université Paris Descartes and Pediatric Endocrinology Unit (R.B.), Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France
| | - H Rouba
- Human Developmental Genetics (A.B., J.B.-T., K.M.), Institut Pasteur, 75724 Paris, France; Institut Pasteur of Morocco (H.R.), 20100 Casablanca, Morocco; and Université Paris Descartes and Pediatric Endocrinology Unit (R.B.), Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France
| | - K McElreavey
- Human Developmental Genetics (A.B., J.B.-T., K.M.), Institut Pasteur, 75724 Paris, France; Institut Pasteur of Morocco (H.R.), 20100 Casablanca, Morocco; and Université Paris Descartes and Pediatric Endocrinology Unit (R.B.), Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France
| | - R Brauner
- Human Developmental Genetics (A.B., J.B.-T., K.M.), Institut Pasteur, 75724 Paris, France; Institut Pasteur of Morocco (H.R.), 20100 Casablanca, Morocco; and Université Paris Descartes and Pediatric Endocrinology Unit (R.B.), Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France
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Naasse Y, Charoute H, El Houate B, Elbekkay C, Razoki L, Malki A, Barakat A, Rouba H. Chromosomal abnormalities and Y chromosome microdeletions in infertile men from Morocco. BMC Urol 2015; 15:95. [PMID: 26385215 PMCID: PMC4574444 DOI: 10.1186/s12894-015-0089-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 09/10/2015] [Indexed: 11/12/2022] Open
Abstract
Background Male infertility is responsible for 50 % of infertile couples. Thirty percent of male infertility is due to cytogenetic and genetic abnormalities. In Arab and North African populations, several studies have shown the association of these chromosomal abnormalities with male infertility. Our objective is to evaluate the frequency of chromosomal abnormalities and Y chromosome microdeletions in infertile men from Morocco. Methods A total of 573 Moroccan infertile men (444 azoospermic and 129 oligozoospermic men) referred for cytogenetic analysis to the Department of Cytogenetics of the Pasteur Institute of Morocco, were screened for the presence of chromosomal abnormalities and Y chromosome microdeletions. Results Chromosomal abnormalities accounted for approximately 10.5 % (60/573). Fifty six cases among them have sex chromosome abnormalities (93.34 %), including Klinefelter’s syndrome in 41 patients (68.34 %). Autosomal chromosome abnormalities (6.66 %) were observed in 4 patients. Chromosomal abnormalities were more prevalent in azoospermic men (13.06 %) than in oligospermic men (1.55 %). Y microdeletions were detected in 16 of 85 patients (AZFc: 14.12 %, AZFbc: 4.70 %), most of them where azoospermic men with no chromosomal abnormality. Conclusions These results highlighted the need for efficient molecular genetic testing in male infertility diagnosis. In addition, a genetic screening should be performed in infertile men before starting assisted reproductive treatments.
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Affiliation(s)
- Yassine Naasse
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco. .,Laboratoire de Physiopathologie et Génétique Moléculaire, Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Morocco.
| | - Hicham Charoute
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| | - Brahim El Houate
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| | - Chadli Elbekkay
- Laboratoire de Cytogénétique, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| | - Lunda Razoki
- Laboratoire de Cytogénétique, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| | - Abderrahim Malki
- Laboratoire de Physiopathologie et Génétique Moléculaire, Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Morocco.
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| | - Hassan Rouba
- Laboratoire de Génétique Moléculaire Humaine, Département de la Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
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25
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Charoute H, Bakhchane A, Benrahma H, Romdhane L, Gabi K, Rouba H, Fakiri M, Abdelhak S, Lenaers G, Barakat A. Mediterranean Founder Mutation Database (MFMD): Taking Advantage from Founder Mutations in Genetics Diagnosis, Genetic Diversity and Migration History of the Mediterranean Population. Hum Mutat 2015; 36:E2441-53. [PMID: 26173767 DOI: 10.1002/humu.22835] [Citation(s) in RCA: 10] [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] [Received: 04/23/2015] [Accepted: 06/26/2015] [Indexed: 01/09/2023]
Abstract
The Mediterranean basin has been the theater of migration crossroads followed by settlement of several societies and cultures in prehistoric and historical times, with important consequences on genetic and genomic determinisms. Here, we present the Mediterranean Founder Mutation Database (MFMD), established to offer web-based access to founder mutation information in the Mediterranean population. Mutation data were collected from the literature and other online resources and systematically reviewed and assembled into this database. The information provided for each founder mutation includes DNA change, amino-acid change, mutation type and mutation effect, as well as mutation frequency and coalescence time when available. Currently, the database contains 383 founder mutations found in 210 genes related to 219 diseases. We believe that MFMD will help scientists and physicians to design more rapid and less expensive genetic diagnostic tests. Moreover, the coalescence time of founder mutations gives an overview about the migration history of the Mediterranean population. MFMD can be publicly accessed from http://mfmd.pasteur.ma.
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Affiliation(s)
- Hicham Charoute
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.,Laboratory of Agri-food and Health, Faculty of Sciences and Techniques, Hassan 1st University, BP 577, 26000, Settat, Morocco
| | - Amina Bakhchane
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Houda Benrahma
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Lilia Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics LR11IPT05, Institut Pasteur de Tunis, 1002, Tunis, Tunisia
| | - Khalid Gabi
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Hassan Rouba
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
| | - Malika Fakiri
- Laboratory of Agri-food and Health, Faculty of Sciences and Techniques, Hassan 1st University, BP 577, 26000, Settat, Morocco
| | - Sonia Abdelhak
- Laboratory of Biomedical Genomics and Oncogenetics LR11IPT05, Institut Pasteur de Tunis, 1002, Tunis, Tunisia
| | - Guy Lenaers
- Pôle de Recherche et d'Enseignement en Médecine Mitochondriale (PREMMi), Université d'Angers, CHU Bât IRIS/IBS, Rue des Capucins, 49933, Angers cedex 9, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco
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Ajjemami M, Ouatou S, Charoute H, Fakiri M, Rhaissi H, Benrahma H, Rouba H, Barakat A. Haplotype analysis of the Apolipoprotein A5 gene in Moroccan patients with the metabolic syndrome. J Diabetes Metab Disord 2015; 14:29. [PMID: 25909077 PMCID: PMC4407873 DOI: 10.1186/s40200-015-0160-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 04/08/2015] [Indexed: 08/30/2023]
Abstract
BACKGROUND In this case-control study we investigated the relative contribution of commons APOA5 polymorphisms and haplotypes to the risk of metabolic syndrome in Moroccan patients. METHODS Using the International Diabetes Federation (IDF) criteria for metabolic syndrome, the study included 176 patients and 105 controls. We genotyped APOA5 polymorphisms (-1131 T > C, c.56C > G, c.553G > T and c.1259 T > C) by PCR-RFLP analysis. The effects of APOA5 polymorphisms and constructed haplotypes on metabolic syndrome were estimated using logistic regression analyses. RESULTS The statistical analysis showed a significant association between APOA5 -1131 T > C and APOA5 c.56C > G polymorphisms with metabolic syndrome in both Codominant and Dominant models. The APOA5 -1131 T > C polymorphism was associated with increased fasting glucose (p = 0.0295) and reduced HDL levels (p = 0.0091). Carriers of the APOA5 c.56G allele had increased triglyceride levels (p = 0.0435) and waist circumference (p = 0.0122). Similarly the APOA5 1259 T > C variant was associated with increased waist circumference (p = 0.0463). The haplotypes CCGT (OR = 3.223; p = 0.00278) and CGGT (OR = 8.234; p = 0.00534) were significantly associated with susceptibility to metabolic syndrome. CONCLUSIONS Our results confirms the association of APOA5 -1131 T > C and c.56C > G variants with the predisposition to metabolic syndrome complications.
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Affiliation(s)
- Maria Ajjemami
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Sanaa Ouatou
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Hicham Charoute
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco ; Univ Hassan 1, Laboratoire Agroalimentaire et Santé, 26000 Settat, Morocco
| | - Malika Fakiri
- Univ Hassan 1, Laboratoire Agroalimentaire et Santé, 26000 Settat, Morocco
| | - Houria Rhaissi
- Laboratoire de Physiologie et Génétique Moléculaire, Faculté des sciences Ben M'Sik, Université Hassan II, Mohammedia, Morocco
| | - Houda Benrahma
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Hassan Rouba
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco
| | - Abdelhamid Barakat
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire Humaine, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco
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Reguig A, Harich N, Barakat A, Rouba H. Phylogeography of E1b1b1b-M81 haplogroup and analysis of its subclades in Morocco. Hum Biol 2014; 86:105-12. [PMID: 25397701 DOI: 10.3378/027.086.0204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2014] [Indexed: 11/05/2022]
Abstract
In this study we analyzed 295 unrelated Berber-speaking men from northern, central, and southern Morocco to characterize frequency of the E1b1b1b-M81 haplogroup and to refine the phylogeny of its subclades: E1b1b1b1-M107, E1b1b1b2-M183, and E1b1b1b2a-M165. For this purpose, we typed four biallelic polymorphisms: M81, M107, M183, and M165. A large majority of the Berber-speaking male lineages belonged to the Y-chromosomal E1b1b1b-M81 haplogroup. The frequency ranged from 79.1% to 98.5% in all localities sampled. E1b1b1b2-M183 was the most dominant subclade in our samples, ranging from 65.1% to 83.1%. In contrast, the E1b1b1b1-M107 and E1b1b1b2a-M165 subclades were not found in our samples. Our results suggest a predominance of the E1b1b1b-M81 haplogroup among Moroccan Berber-speaking males with a decreasing gradient from south to north. The most prevalent subclade in this haplogroup was E1b1b1b2-M183, for which diffferences among these three groups were statistically significant between central and southern groups.
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Affiliation(s)
- Ahmed Reguig
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Nourdin Harich
- Equipe des sciences Anthropogénétiques et Biotechnologie, Département de Biologie, Faculté des Sciences El Jadida, Université Chouaib Eddoukkali, El Jadida, Morocco
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Casablanca, Morocco
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Sefri H, Benrahma H, Charoute H, Lakbakbi el Yaagoubi F, Rouba H, Lyoussi B, Nourlil J, Abidi O, Barakat A. TNF A -308G>A polymorphism in Moroccan patients with type 2 diabetes mellitus: a case-control study and meta-analysis. Mol Biol Rep 2014; 41:5805-11. [PMID: 24952604 DOI: 10.1007/s11033-014-3454-5] [Citation(s) in RCA: 8] [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] [Received: 10/03/2013] [Accepted: 06/12/2014] [Indexed: 11/27/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is one of causes of mortality and morbidity in Moroccan population. The identification of genes implicated in this disease can help to found a specific treatment and to improve the quality of life for type 2 diabetic patients. In this study we analyze the association between a polymorphism (-308G>A) of TNF A promoter gene and T2DM in Moroccan patients. Five hundred and fifty-one individuals (307 patients with T2DM and 244 controls) were genotyped for this polymorphism by PCR-RFLP. This association was further reconsidered by a meta-analysis on 21 studies including 8,187 cases and 7,811 controls. We found that in Moroccan patients the -308A allele is strongly associated with T2DM (p = 0.000002; odds ratio 1.79, 95 % confidence interval 1.41-2.28). Based on our meta-analysis, there was no significant association detected between the TNF A -308G>A polymorphism and risk for T2DM. Our results suggest that the -308G>A polymorphism is a genetic risk factor for the development of T2DM in Moroccan population. On the other hand the meta analysis results led to controversial conclusions in other ethnicities.
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Affiliation(s)
- Hajar Sefri
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360, Casablanca, Morocco
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Benrahma H, Charoute H, Lasram K, Boulouiz R, Atig RKB, Fakiri M, Rouba H, Abdelhak S, Barakat A. Association analysis of IGF2BP2, KCNJ11, and CDKAL1 polymorphisms with type 2 diabetes mellitus in a Moroccan population: a case-control study and meta-analysis. Biochem Genet 2014; 52:430-42. [PMID: 24898818 DOI: 10.1007/s10528-014-9658-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 04/25/2014] [Indexed: 11/24/2022]
Abstract
Associations with type 2 diabetes mellitus have been identified for variants CDKAL1 rs7756992, KCNJ11 rs5219, and IGF2BP2 rs4402960 in different populations. In a case-control study of 250 unrelated Moroccan diabetic patients and 250 healthy controls, we used TaqMan allelic discrimination assays to genotype the three SNPs and meta-analysis to investigate the association between the polymorphisms and diabetes in Arab populations. The results showed a significant diabetes association only with the variant rs4402960 of the IGF2BP2 gene under additive 2 (GG vs. TT; p = 0.009) and recessive (TT vs. GG+GT; p = 0.003) models. Meta-analysis indicated significant association between the IGF2BP2 rs4402960 and CDKAL1 rs7756992 polymorphisms and increased risk of diabetes in Arab populations. According to our results, the case-control study and meta-analysis revealed a significant association between the IGF2BP2 rs4402960 variant and type 2 diabetes in Moroccan and Arab populations.
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Affiliation(s)
- Houda Benrahma
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Place Louis Pasteur, 20100, Casablanca, Morocco
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Eloualid A, Rouba H, Rhaissi H, Barakat A, Louanjli N, Bashamboo A, McElreavey K. Prevalence of the Aurora kinase C c.144delC mutation in infertile Moroccan men. Fertil Steril 2014; 101:1086-90. [DOI: 10.1016/j.fertnstert.2013.12.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 12/20/2013] [Accepted: 12/20/2013] [Indexed: 12/27/2022]
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Ouatou S, Ajjemami M, Charoute H, Sefri H, Ghalim N, Rhaissi H, Benrahma H, Barakat A, Rouba H. Association of APOA5 rs662799 and rs3135506 polymorphisms with arterial hypertension in Moroccan patients. Lipids Health Dis 2014; 13:60. [PMID: 24684850 PMCID: PMC3972990 DOI: 10.1186/1476-511x-13-60] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 03/26/2014] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The goal of the study is to investigate the association between the APOA5 polymorphisms and haplotypes with Arterial Hypertension (AHT) in Moroccan patients. METHODS The study was performed in 283 subjects, 149 patients with AHT and 134 controls. All subjects were genotyped for the APOA5 -1131 T > C (rs662799), 56C > G (rs3135506) and c.553G > T (rs2075291) polymorphisms. RESULTS There was a strong association between -1131 T > C and 56C > G polymorphisms with AHT. The -1131 T > C and 56C > G polymorphisms were significantly associated with increased systolic blood pressure (SBP) and triglycerides (TG) levels. There were 4 haplotypes with a frequency higher than 5%, constructed from APOA5 polymorphisms, with the following order: -1131 T > C, 56C > G and c.553G > T. Haplotype H1 (TCG) was associated with decreased risk of AHT, whereas the haplotypes H2 (CCG) and H4 (CGG) were significantly associated with an increased risk of AHT. Carriers of H1 haplotype had a lower SBP and DBP and TG. In contrast, significant elevated SBP, DBP and TG were found in H4 haplotypes carriers. CONCLUSIONS Our data demonstrate for the first time that several common SNPs in the APOA5 gene and their haplotypes are closely associated with modifications of blood pressure and serum lipid parameters in the AHT patient.
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Affiliation(s)
| | | | | | | | | | | | | | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, 1, Place Louis Pasteur, 20360 Casablanca, Morocco.
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Charif M, Boulouiz R, Bakhechane A, Benrahma H, Nahili H, Eloualid A, Rouba H, Kandil M, Abidi O, Lenaers G, Barakat A. Genetic and molecular analysis of the CLDN14 gene in Moroccan family with non-syndromic hearing loss. Indian J Hum Genet 2013; 19:331-6. [PMID: 24339547 PMCID: PMC3841559 DOI: 10.4103/0971-6866.120828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND: Hearing loss is the most prevalent human genetic sensorineural defect. Mutations in the CLDN14 gene, encoding the tight junction claudin 14 protein expressed in the inner ear, have been shown to cause non-syndromic recessive hearing loss DFNB29. AIM: We describe a Moroccan SF7 family with non-syndromic hearing loss. We performed linkage analysis in this family and sequencing to identify the mutation causing deafness. MATERIALS AND METHODS: Genetic linkage analysis, suggested the involvement of CLDN14 and KCNE1 gene in deafness in this family. Mutation screening was performed using direct sequencing of the CLDN14 and KCNE1 coding exon gene. RESULTS: Our results show the presence of c.11C>T mutation in the CLDN14 gene. Transmission analysis of this mutation in the family showed that the three affected individuals are homozygous, whereas parents and three healthy individuals are heterozygous. This mutation induces a substitution of threonine to methionine at position 4. CONCLUSION: These data show that CLDN14 gene can be i mplicated in the development of hearing loss in SF7 family; however, the pathogenicity of c.11C>T mutation remains to be determined.
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Affiliation(s)
- Majida Charif
- Département de Recherche Scientifique, Laboratoire de Génétique Moléculaire et Humaine, Institut Pasteur, 1, Place Louis Pasteur, C.P. 20360 Casablanca, Morocco
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Charif M, Bakhchane A, Abidi O, Boulouiz R, Eloualid A, Roky R, Rouba H, Kandil M, Lenaers G, Barakat A. Analysis of CLDN14 gene in deaf Moroccan patients with non-syndromic hearing loss. Gene 2013; 523:103-5. [DOI: 10.1016/j.gene.2013.03.123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/20/2013] [Accepted: 03/27/2013] [Indexed: 10/27/2022]
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Charif M, Bounaceur S, Abidi O, Nahili H, Rouba H, Kandil M, Boulouiz R, Barakat A. The c.242G>A mutation in LRTOMT gene is responsible for a high prevalence of deafness in the Moroccan population. Mol Biol Rep 2012; 39:11011-6. [PMID: 23053991 DOI: 10.1007/s11033-012-2003-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
Abstract
Congenital hearing impairment (HI) affects one in 1,000 newborns and has a genetic cause in 50 % of the cases. Autosomal recessive non-syndromic hearing impairment is responsible for 70-80 % of all hereditary cases of HI. Recently, it has been demonstrated that, mutations of LRTOMT are associated with profound nonsyndromic hearing impairment at the DFNB63 locus. The objective of this study is to evaluate the carrier frequency of c.242G>A mutation in LRTOMT gene and define the contribution of this gene in the etiology of deafness in Moroccan population. We screened 105 unrelated Moroccan families with non-syndromic HI and 120 control individuals for mutation in the exon 8 of the LRTOMT gene, by sequencing and PCR-RFLP. The Homozygous c.242G>A mutation was found in 8.75 % of the families tested and in 4.16 % of control in the heterozygous state. Our results show that after the GJB2 gene mutation in LRTOMT gene is the second cause of congenital hearing impairment in Moroccan patients. This finding should facilitate diagnosis of congenital deafness of the affected subjects in Morocco.
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Affiliation(s)
- Majida Charif
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur, 1, Place Louis Pasteur, C.P 20360, Casablanca, Morocco
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Eloualid A, Abidi O, Charif M, El Houate B, Benrahma H, Louanjli N, Chadli E, Ajjemami M, Barakat A, Bashamboo A, McElreavey K, Rhaissi H, Rouba H. Association of the MTHFR A1298C variant with unexplained severe male infertility. PLoS One 2012; 7:e34111. [PMID: 22457816 PMCID: PMC3311580 DOI: 10.1371/journal.pone.0034111] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 02/23/2012] [Indexed: 11/23/2022] Open
Abstract
The methylenetetrahydrofolate reductase (MTHFR) gene is one of the main regulatory enzymes involved in folate metabolism, DNA synthesis and remethylation reactions. The influence of MTHFR variants on male infertility is not completely understood. The objective of this study was to analyze the distribution of the MTHFR C677T and A1298C variants using PCR-Restriction Fragment Length Polymorphism (RFLP) in a case group consisting of 344 men with unexplained reduced sperm counts compared to 617 ancestry-matched fertile or normozoospermic controls. The Chi square test was used to analyze the genotype distributions of MTHFR polymorphisms. Our data indicated a lack of association of the C677T variant with infertility. However, the homozygous (C/C) A1298C polymorphism of the MTHFR gene was present at a statistically high significance in severe oligozoospermia group compared with controls (OR = 3.372, 95% confidence interval CI = 1.27–8.238; p = 0.01431). The genotype distribution of the A1298C variants showed significant deviation from the expected Hardy-Weinberg equilibrium, suggesting that purifying selection may be acting on the 1298CC genotype. Further studies are necessary to determine the influence of the environment, especially the consumption of diet folate on sperm counts of men with different MTHFR variants.
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Affiliation(s)
- Abdelmajid Eloualid
- Human Genetic Unit, Research Department, Pasteur Institute, Casablanca, Morocco.
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Charif M, Abidi O, Boulouiz R, Nahili H, Rouba H, Kandil M, Delprat B, Lenaers G, Barakat A. Molecular analysis of the TMPRSS3 gene in Moroccan families with non-syndromic hearing loss. Biochem Biophys Res Commun 2012; 419:643-7. [PMID: 22382023 DOI: 10.1016/j.bbrc.2012.02.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 02/13/2012] [Indexed: 11/18/2022]
Abstract
Autosomal recessive non-syndromic hearing impairment (ARNSHI) is the most common type of inherited hearing impairment, accounting for approximately 80% of inherited prelingual hearing impairment. Hearing loss is noted to be both phenotypically and genetically heterogeneous. Mutations in the TMPRSS3 gene, which encodes a transmembrane serine protease, are known to cause autosomal recessive non-syndromic hearing impairment DFNB8/10. In order to elucidate if the TMPRSS3 gene is responsible for ARNSHI in 80 Moroccan families with non-syndromic hearing impairment, the gene was sequenced using DNA samples from these families. Nineteen TMPRSS3 variants were found, nine are located in the exons among which six are missense and three are synonymous. The 10 remaining variations are located in non-coding regions. Missense variants analysis show that they do not have a significant pathogenic effect on protein while pathogenicity of some variant remains under discussion. Thus we show that the TMPRSS3 gene is not a major contributor to non-syndromic deafness in the Moroccan population.
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Affiliation(s)
- Majida Charif
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, 20360 Casablanca, Morocco
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Abidi O, Knari S, Sefri H, Charif M, Senechal A, Hamel C, Rouba H, Zaghloul K, El Kettani A, Lenaers G, Barakat A. Mutational analysis of the RB1 gene in Moroccan patients with retinoblastoma. Mol Vis 2011; 17:3541-7. [PMID: 22219649 PMCID: PMC3250372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 12/27/2011] [Indexed: 10/31/2022] Open
Abstract
PURPOSE Retinoblastoma (RB), the most common intraocular tumor occurring in infancy and early childhood, is most often related to mutations in the RB1 gene. In this study, we screened the RB1 germline mutations in 41 unrelated Moroccan patients with retinoblastoma, 25 heritable cases, and 16 sporadic unilateral cases. METHODS After complete ophthalmic examinations were performed and consent obtained, DNA was extracted from peripheral blood, and screening of RB1 mutations was performed with PCR direct sequencing of the promoter and the 27 coding exons of the RB1 gene. RESULTS We identified ten germline mutations in 10/41 (24.39%) unrelated patients, among which three had not been previously reported. The mutation detection rate was 40% (10/25) in the heritable cases and 0% (0/16) in the sporadic unilateral cases. Of these mutations, six were nonsense, and three were frameshifts, all associated with severe phenotypes resulting in bilateral and multifocal tumors. One splice site mutation was found in a familial case associated with a low expressivity phenotype resulting in unilateral and unifocal tumors. Moreover, eight intronic variants were identified, three of which were novel. CONCLUSIONS This first report of RB1 gene screening in Moroccan patients with retinoblastoma shows a comparable mutational spectrum to those reported previously, which has evident importance for managing patients with retinoblastoma and their families.
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Affiliation(s)
- Omar Abidi
- Laboratoire de Génétique Humaine et Biologie Moléculaire, Institut Pasteur du Maroc,
Casablanca, Morocco
| | - Sara Knari
- Service d’Ophtalmologie pédiatrique, Hôpital 20 Août, CHU de Casablanca, Morocco
| | - Hajar Sefri
- Laboratoire de Génétique Humaine et Biologie Moléculaire, Institut Pasteur du Maroc,
Casablanca, Morocco
| | - Majida Charif
- Laboratoire de Génétique Humaine et Biologie Moléculaire, Institut Pasteur du Maroc,
Casablanca, Morocco
| | - Audrey Senechal
- Institut des Neurosciences de Montpellier, Génétique et thérapie des cécités rétiniennes et neuropathies optiques héréditaires, INSERM U-1051, Université de Montpellier Sud de France, Montpellier, France
| | - Christian Hamel
- Institut des Neurosciences de Montpellier, Génétique et thérapie des cécités rétiniennes et neuropathies optiques héréditaires, INSERM U-1051, Université de Montpellier Sud de France, Montpellier, France
| | - Hassan Rouba
- Laboratoire de Génétique Humaine et Biologie Moléculaire, Institut Pasteur du Maroc,
Casablanca, Morocco
| | - Khalid Zaghloul
- Service d’Ophtalmologie pédiatrique, Hôpital 20 Août, CHU de Casablanca, Morocco
| | - Asmaa El Kettani
- Service d’Ophtalmologie pédiatrique, Hôpital 20 Août, CHU de Casablanca, Morocco
| | - Guy Lenaers
- Institut des Neurosciences de Montpellier, Génétique et thérapie des cécités rétiniennes et neuropathies optiques héréditaires, INSERM U-1051, Université de Montpellier Sud de France, Montpellier, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Humaine et Biologie Moléculaire, Institut Pasteur du Maroc,
Casablanca, Morocco
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Benrahma H, Abidi O, Melouk L, Ajjemami M, Rouba H, Chadli A, Oudghiri M, Farouqui A, Barakat A. Association of the C677T polymorphism in the human methylenetetrahydrofolate reductase (MTHFR) gene with the genetic predisposition for type 2 diabetes mellitus in a Moroccan population. Genet Test Mol Biomarkers 2011; 16:383-7. [PMID: 22103601 DOI: 10.1089/gtmb.2011.0179] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS Type 2 diabetes mellitus (T2DM) is a major public health problem around the world. The C677T and A1298C polymorphisms of the methylenetetrahydrofolate reductase (MTHFR) gene have been reported to be associated with T2DM and its complications. This study aimed to investigate this association in the Moroccan population. METHODS A case-control study was performed among 282 Moroccan diabetic patients and 232 healthy controls. The MTHFR C677T and A1298C polymorphisms were genotyped by polymerase chain reaction, followed by enzymatic digestion with HinfI and MboII enzymes, respectively. RESULTS There was a significant association between C677T polymorphism and T2DM in both additive and dominant models. In addition, the 677T allele frequency differed significantly between the diabetic and control groups (26.06% vs. 33.20%, respectively). However, no significant association was found between A1298C polymorphism and T2DM. The frequencies of combined genotypes 677CC/1298AA and 677CT/1298AC differed significantly between the diabetic and control groups (32.62% vs. 20.61% and 9.57% vs. 17.55%, respectively). CONCLUSIONS These results show an evident association between the MTHFR C677T polymorphism and T2DM in Moroccan patients but no significant association with the MTHFR A1298C polymorphism.
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Affiliation(s)
- Houda Benrahma
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, Place Louis Pasteur, Casablanca, Morocco.
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Bashamboo A, Ferraz-de-Souza B, Lourenço D, Lin L, Sebire NJ, Montjean D, Bignon-Topalovic J, Mandelbaum J, Siffroi JP, Christin-Maitre S, Radhakrishna U, Rouba H, Ravel C, Seeler J, Achermann JC, McElreavey K. Human male infertility associated with mutations in NR5A1 encoding steroidogenic factor 1. Am J Hum Genet 2010; 87:505-12. [PMID: 20887963 DOI: 10.1016/j.ajhg.2010.09.009] [Citation(s) in RCA: 169] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2010] [Revised: 09/05/2010] [Accepted: 09/15/2010] [Indexed: 10/19/2022] Open
Abstract
One in seven couples worldwide are infertile, and male factor infertility accounts for approximately 30%-50% of these cases. Although many genes are known to be essential for gametogenesis, there are surprisingly few monogenic mutations that have been conclusively demonstrated to cause human spermatogenic failure. A nuclear receptor, NR5A1 (also called steroidogenic factor 1), is a key transcriptional regulator of genes involved in the hypothalamic-pituitary-steroidogenic axis, and it is expressed in the steroidogenic tissue of the developing and adult human gonad. Mutations of NR5A1 have been reported in 46,XY disorders of sex development and in 46,XX primary ovarian insufficiency. To test the hypothesis that mutations in NR5A1 cause male infertility, we sequenced NR5A1 in 315 men with idiopathic spermatogenic failure. We identified seven men with severe spermatogenic failure who carried missense mutations in NR5A1. Functional studies indicated that these mutations impaired NR5A1 transactivational activity. We did not observe these mutations in more than 4000 control alleles, including the entire coding sequence of 359 normospermic men and 370 fertile male controls. NR5A1 mutations are found in approximately 4% of men with otherwise unexplained severe spermatogenic failure.
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Nahili H, Charif M, Boulouiz R, Bounaceur S, Benrahma H, Abidi O, Chafik A, Rouba H, Kandil M, Barakat A. Prevalence of the mitochondrial A 1555G mutation in Moroccan patients with non-syndromic hearing loss. Int J Pediatr Otorhinolaryngol 2010; 74:1071-4. [PMID: 20637512 DOI: 10.1016/j.ijporl.2010.06.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 06/08/2010] [Accepted: 06/12/2010] [Indexed: 11/16/2022]
Abstract
UNLABELLED Mutations in mitochondrial DNA (mtDNA), especially the A1555G transition in the 12S rRNA gene, are one of the causes of both aminoglycoside-induced and non-syndromic sensorineural hearing loss. OBJECTIVE The aim of this study was to determine the prevalence of the A1555G mitochondrial mutation in Moroccan patients. METHODS We performed molecular characterization by PCR-RFLP and direct sequencing of one hundred and sixty four patients (84 unrelated familial and 80 sporadic cases) with a congenital sensorineural non-syndromic hearing loss and one hundred normal hearing controls for the occurrence of the A1555G mutation. RESULTS Mutational analysis of the mtDNA showed the presence of the homoplasmic A1555G mutation in three families, leading to a frequency of 3.6% similar to that reported for European-populations. No A1555G mutation was detected in sporadic and controls cases. However, we detected in twenty normal hearing controls a novel polymorphism A1557C, which was not found in patient samples. We further evidenced the presence of the A1438G mitochondrial polymorphism in four patients with sensorineural hearing loss and in five controls. CONCLUSION Our results show that the occurrence of the A1555G mutation in hearing impaired patient's accounts for 3.6% in a Moroccan patients and those novel mtDNA polymorphisms might contribute to a novel sub-haplogroup specific of the Magrheb.
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Affiliation(s)
- Halima Nahili
- Laboratoire de Génétique Moléculaire et Humaine, Département de Recherche Scientifique, Institut Pasteur, Place Louis Pasteur, 20360 Casablanca, Morocco.
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Imken L, Rouba H, El Houate B, Louanjli N, Barakat A, Chafik A, McElreavey K. Mutations in the protamine locus: association with spermatogenic failure? Mol Hum Reprod 2009; 15:733-8. [DOI: 10.1093/molehr/gap056] [Citation(s) in RCA: 40] [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: 11/12/2022] Open
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Abidi O, Boulouiz R, Nahili H, Bakhouch K, Wakrim L, Rouba H, Chafik A, Hassar M, Barakat A. Carrier frequencies of mutations/polymorphisms in the connexin 26 gene (GJB2) in the Moroccan population. ACTA ACUST UNITED AC 2009; 12:569-74. [PMID: 19072567 DOI: 10.1089/gte.2008.0063] [Citation(s) in RCA: 11] [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: 11/12/2022]
Abstract
Mutations in the Connexin 26 gene (GJB2/Cx26) are responsible for more than half of all cases of prelingual nonsyndromic recessive deafness in Caucasians. The carrier frequency of the 35delG-GJB2 mutation was found to be as high as 2-4% in the Mediterranean populations. Different GJB2 mutations were reported in the Moroccan patients with autosomal recessive nonsyndromic hearing loss; however, rare studies were carried out on the carrier frequencies of these mutations in the healthy populations. The aim of this study was to estimate the carrier frequencies of the GJB2 mutations in the Moroccan population. The molecular analysis of the 35delG mutation and other GJB2 sequence variations was performed in 386 healthy unrelated Moroccan individuals with no known hearing loss. Five GJB2 sequence variations at heterozygous state were found: two mutations, 35delG and 109G > A (V37I), and three polymorphisms, 79G > A (V27I), 341G > A (E114G), and 457G > A (V153I). The carrier frequency of the 35delG mutation was the highest with 2.07% [95% confidence interval (0.90-4.04%)], followed by that of the V37I mutation with 1.43% (0.06-5.39). The carrier frequency of V27I, E114G, and V153I changes was estimated to be 0.71% (0.01-4.34). This finding shows that the 35delG carrier frequency found here is similar to the one observed in Mediterranean populations. It provides new information about GJB2 carrier rates facilitating the diagnosis and the genetic counseling in the Moroccan population.
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Affiliation(s)
- Omar Abidi
- Laboratory of Human Genetics, Department of Scientific Research, Pasteur Institute, Casablanca, Morocco
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Ravel C, Chantot-Bastaraud S, El Houate B, Rouba H, Legendre M, Lorenço D, Mandelbaum J, Siffroi JP, McElreavey K. Y-chromosome AZFc structural architecture and relationship to male fertility. Fertil Steril 2008; 92:1924-33. [PMID: 18990391 DOI: 10.1016/j.fertnstert.2008.08.135] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 08/26/2008] [Accepted: 08/29/2008] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine if there is a relationship between various forms of partial AZFc deletions and spermatogenic failure. DESIGN Case-control study. SETTING Infertility clinic (Tenon Hospital, Paris). PATIENT(S) 557 men, comprising 364 infertile men from mixed ethnic backgrounds, and 193 men with known fertility (n = 84) and/or normospermic (n = 109). INTERVENTION(S) Characterization of 32 partial AZFc deletions. MAIN OUTCOME MEASURE(S) DAZ gene cluster divided into two families (DAZ1/2 and DAZ3/4), CDY1 gene, and Y-chromosome haplogroups. RESULT(S) We observed 18 partial AZFc deletions in 364 (4.95%) infertile men compared with 14 out of 193 (7.25%) in the control normospermic/fertile group. CONCLUSION(S) The analysis of informative Y-chromosome single nucleotide variants combined with Y-chromosome haplogroup definition enabled us to infer seven deletion classes that occur on a minimum of six Y-chromosome parental architectures. We found no relationship between either the presence or the absence of DAZ1/2, DAZ3/4, CDY1a, or CDY1b with spermatogenic failure at least on one Y-chromosome lineage. The DAZ dosage and Southern blot analyses indicated that the majority of individuals tested carried two copies of the DAZ gene, indicating a partial AZFc deletion. Our data are consistent with the hypothesis that, at least in our study populations, partial AZFc deletions may have a limited impact on fertility.
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Affiliation(s)
- Celia Ravel
- Human Developmental Genetics, Institut Pasteur, Paris, France
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Abidi O, Boulouiz R, Nahili H, Imken L, Rouba H, Chafik A, Barakat A. The analysis of three markers flanking GJB2 gene suggests a single origin of the most common 35delG mutation in the Moroccan population. Biochem Biophys Res Commun 2008; 377:971-4. [PMID: 18952066 DOI: 10.1016/j.bbrc.2008.10.086] [Citation(s) in RCA: 11] [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] [Received: 10/13/2008] [Accepted: 10/20/2008] [Indexed: 11/28/2022]
Abstract
In Caucasian populations a single mutation, 35delG, accounts for the majority of GJB2 gene mediated hearing loss, with carrier frequencies estimated between 2-4%, possibly resulting from a founder effect rather than from a mutational hot spot. In Moroccan population, the 35delG mutation accounts for 90.8% of all GJB2 mutated alleles in deaf patients with a carrier frequency of 2.65%. The aim of this study was to evaluate whether the 35delG mutation has derived from a single origin in the Moroccan population. We enrolled 30 unrelated deaf patients homozygous for the 35delG mutation and 165 unrelated control individuals negative for this mutation, and genotyped three microsatellite markers flanking the GJB2 region: D13S141, D13S175 and D13S143. Data analysis revealed that the 35delG mutation is associated with particular alleles of these markers, with significant linkage disequilibrium for the 125 and 105 nucleotide long alleles of D13S141 and D13S175, and that a single specific haplotype accounts for 68% of the chromosomes carrying the 35delG mutation. The estimate age of 35delG mutation is 135 generations or approximately 2700 years old. Like in other Mediterranean populations, our results suggest that in the Moroccan population the 35delG mutation has derived from a single origin in a common founder process.
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Affiliation(s)
- Omar Abidi
- Laboratoire de Génétique Humaine, Département des Recherches Scientifiques, Institut Pasteur, Morocco. 1, Place Louis Pasteur, Casablanca 20100, Morocco.
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El Houate B, Rouba H, Imken L, Sibai H, Chafik A, Boulouiz R, Chadli E, Hassar M, McElreavey K, Barakat A. No association between T222P/LGR8 mutation and cryptorchidism in the Moroccan population. Horm Res 2008; 70:236-9. [PMID: 18772597 DOI: 10.1159/000151596] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2007] [Accepted: 01/10/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND Cryptorchidism is the most common genital anomaly in men. The INSL3/LGR8 system is involved in testicular descent via gubernacular development. INSL3 binds with high affinity to its receptor LGR8 and receptor activation is associated with cAMP signaling. Analysis of human INSL3 and LGR8 mutations confirms that some cases of cryptorchidism are caused by mutations in these genes. The T222P mutation is the only one within the LGR8 gene associated with the cryptorchidism phenotype. A strong association of the T222P mutation with cryptorchidism was found in an Italian population. Due to the same mutation being found in patients within the Mediterranean area, a possible founder effect of this mutation is supposed. METHODS We screened 109 patients with cryptorchidism and 250 controls in a Moroccan population. RESULTS We found that 3 of the 109 patients tested carry the T222P mutation and 4 individuals in the control group also carry the mutation. CONCLUSIONS Our results show in fact that the same mutation is present in the Moroccan population, but an association between cryptorchidism and the T222P mutation was not found.
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Affiliation(s)
- Brahim El Houate
- Human Genetic Laboratory, Pasteur Institute of Morocco, Casablanca, Morocco
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Imken L, El Houate B, Chafik A, Nahili H, Boulouiz R, Abidi O, Chadli E, Louanjli N, Elfath A, Hassar M, McElreavey K, Barakat A, Rouba H. AZF microdeletions and partial deletions of AZFc region on the Y chromosome in Moroccan men. Asian J Androl 2007; 9:674-8. [PMID: 17712485 DOI: 10.1111/j.1745-7262.2007.00290.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
AIM To evaluate for the first time the frequency of Y chromosome microdeletions and the occurrence of the partial deletions of AZFc region in Moroccan men, and to discuss the clinical significance of AZF deletions. METHODS We screened Y chromosome microdeletions and partial deletions of the AZFc region of a consecutive group of infertile men (n = 149) and controls (100 fertile men, 76 normospermic men). AZFa, AZFb, AZFc and partial deletions of the AZFc region were analyzed by polymerase chain reaction (PCR) according to established protocols. RESULTS Among the 127 infertile men screened for microdeletion, four subjects were found to have microdeletions: two AZFc deletions and two AZFb+AZFc deletions. All the deletions were found only in azoospermic subjects (4/48, 8.33%). The overall AZFc deletion frequency was low (4/127, 3.15%). AZF microdeletions were not observed in either oligoasthenoteratozoospermia (OATS) or the control. Partial deletions of AZFc (gr/gr) were observed in a total of 7 of the 149 infertile men (4.70%) and 7 partial AZFc deletions (gr/gr) were found in the control group (7/176, 3.98%). In addition, two b2/b3 deletions were identified in two azoospermic subjects (2/149, 1.34%) but not in the control group. CONCLUSION Our results suggest that the frequency of Y chromosome AZF microdeletions is elevated in individuals with severe spermatogenic failure and that gr/gr deletions are not associated with spermatogenic failure.
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Affiliation(s)
- Laila Imken
- Human Genetic and Cytogenetic Unit, Research Department, Pasteur Institute of Morocco, Ezzahraoui 20100 Casablanca, Morocco.
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Abidi O, Boulouiz R, Nahili H, Ridal M, Alami MN, Tlili A, Rouba H, Masmoudi S, Chafik A, Hassar M, Barakat A. GJB2 (connexin 26) gene mutations in Moroccan patients with autosomal recessive non-syndromic hearing loss and carrier frequency of the common GJB2-35delG mutation. Int J Pediatr Otorhinolaryngol 2007; 71:1239-45. [PMID: 17553572 DOI: 10.1016/j.ijporl.2007.04.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 04/20/2007] [Accepted: 04/24/2007] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Mutations in the connexin 26 gene (GJB2), which encodes a gap-junction protein expressed in the inner ear, have been shown to be responsible for a major part of autosomal recessive non-syndromic hearing loss in Caucasians. The aim of our study was to determine the prevalence and spectrum of GJB2 mutations, including the (GJB6-D13S1830) deletion, in Moroccan patients and estimate the carrier frequency of the 35delG mutation in the general population. METHODS Genomic DNA was isolated from 81 unrelated Moroccan familial cases with moderate to profound autosomal recessive non-syndromic hearing loss and 113 Moroccan control individuals. Molecular studies were performed using PCR-Mediated Site Directed Mutagenesis assay, PCR and direct sequencing to screen for GJB2, 35delG and del(GJB6-D13S1830) mutations. RESULTS GJB2 mutations were found in 43.20% of the deaf patients. Among these patients 35.80% were 35delG/35delG homozygous, 2.47% were 35delG/wt heterozygous, 3.70% were V37I/wt heterozygous, and 1 patient was E47X/35delG compound heterozygous. None of the patients with one or no GJB2 mutation displayed the common (GJB6-D13S1830) deletion. We found also that the carrier frequency of GJB2-35delG in the normal Moroccan population is 2.65%. CONCLUSIONS These findings indicate that the GJB2-35delG mutation is the major cause of autosomal recessive non-syndromic hearing loss in Moroccan population. Two other mutations were also detected (V37I and E47X), in agreement with similar studies in other populations showing heterogeneity in the frequencies and types of mutation in connexin 26 gene.
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Affiliation(s)
- Omar Abidi
- Laboratoire de Génétique Humaine, Département de Recherche Scientifique, Institut Pasteur, Casablanca, Morocco
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El Houate B, Rouba H, Sibai H, Barakat A, Chafik A, Chadli EB, Imken L, Bogatcheva NV, Feng S, Agoulnik AI, McElreavey K. Novel Mutations Involving the
INSL3
Gene Associated With Cryptorchidism. J Urol 2007; 177:1947-51. [PMID: 17437853 DOI: 10.1016/j.juro.2007.01.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Indexed: 10/23/2022]
Abstract
PURPOSE Cryptorchidism affects 1% to 9% of full-term male neonates. Hypospadias is the second most frequent congenital anomaly seen in newborn males. These pathological conditions are part of the testicular dysgenesis syndrome. Insulin-like factor 3 and LGR8 (leucine-rich repeat-containing G protein-coupled receptor 8), acting as a hormone and a receptor, respectively, are involved in control of the first phase of testicular descent via gubernacular development. MATERIALS AND METHODS The study group consisted of 184 patients, of whom 52 presented with unilateral cryptorchidism, 37 presented with bilateral cryptorchidism, 19 presented with cryptorchidism and hypospadias, 1 presented with bilateral cryptorchidism and micropenis, and 75 presented with isolated hypospadias. A control panel consisted of 270 controls, including 127 fertile, and 143 fertile noncryptorchid males. Insulin-like factor 3 mutations were analyzed by direct sequencing and restriction enzyme digestion. We analyzed the ability of the mutant insulin-like factor 3 peptides identified in this study to activate LGR8 receptor in an ex vivo assays. RESULTS We identified 3 novel insulin-like factor 3 variants, including C-19G, V18M and R105H, in 3 of the 109 patients (2.75%) but in none of the 270 controls. The V18M mutation in the insulin-like factor 3 signal peptide had a significant deleterious effect in activating LGR8 receptor in ex vivo studies (p<0.05). To our knowledge we report the first variant in the promoter region of the insulin-like factor 3 gene in a patient with cryptorchidism in association with micropenis. CONCLUSIONS Mutations involving the insulin-like factor 3 gene may contribute to other anomalies of male genital development, such as micropenis.
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Affiliation(s)
- Brahim El Houate
- Human Genetics Department, Institut Pasteur of Morocco, Casablanca, Morocco
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Ravel C, El Houate B, Chantot S, Lourenço D, Dumaine A, Rouba H, Bandyopadahyay A, Radhakrishna U, Das B, Sengupta S, Mandelbaum J, Siffroi JP, McElreavey K. Haplotypes, mutations and male fertility: the story of the testis-specific ubiquitin protease USP26. Mol Hum Reprod 2006; 12:643-6. [PMID: 16888075 DOI: 10.1093/molehr/gal063] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Recently, mutations in the X-linked ubiquitin protease 26 (USP26) gene have been proposed to be associated with male infertility. In particular a 371insACA, 494T>C and 1423C>T haplotype, which results in a T123-124ins, L165S and H475Y amino acid change respectively, has been reported to be associated with Sertoli cell-only syndrome (SCOS) and an absence of sperm in the ejaculate. Here, we demonstrate that two of these changes actually correspond to the ancestral sequence of the gene and that the USP26 haplotype is present in significant frequencies in sub-Saharan African and South and East Asian populations, including in individuals with known fertility. This indicates that the allele is not associated with infertility. The pattern of frequency distribution of the derived haplotype (371delACA, 494T), which is present at high frequencies in most non-African populations could be interpreted as either a result of migration followed by simple genetic drift or alternatively as positive selection acting on the derived alleles. The latter hypothesis seems likely, because there is evidence of strong positive selection acting on the USP26 gene.
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Affiliation(s)
- C Ravel
- Reproduction, Fertility and Populations, Institut Pasteur, 25 rue du Dr Roux, Paris, France
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Quintana-Murci L, Bigham A, Rouba H, Barakat A, McElreavey K, Hammer M. Y-chromosomal STR haplotypes in Berber and Arabic-speaking populations from Morocco. Forensic Sci Int 2004; 140:113-5. [PMID: 15013173 DOI: 10.1016/j.forsciint.2003.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2003] [Accepted: 11/07/2003] [Indexed: 11/19/2022]
Abstract
Twelve Y-chromosomal short tandem repeats (STRs), DYS19, DYS385, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS388, DYS426 and DYS439 were typed in Berber-speaking (n=49) and Arabic-speaking (n=60) population samples from Morocco.
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