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El Kari K, Mankai A, El Kouki D, Mehdad S, Benjeddou K, El Hsaini H, El Mzibri M, Aguenaou H. Anthropometry-Based Prediction Equation of Body Composition in a Population Aged 12-88 Years. J Nutr 2023; 153:657-664. [PMID: 36931748 DOI: 10.1016/j.tjnut.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Direct anthropometric measurements to assess body composition have limited precision and/or specificity. OBJECTIVES The study aimed to develop a prediction equation based on anthropometric measurements for estimating total body water (TBW) in a healthy population. METHODS TBW was assessed using the deuterium dilution method in 398 Moroccan participants (235 women and 163 men) aged 11.6-88 y, then compared to the estimations made by previously published anthropometric equations. By sex, participants were randomly assigned into development (n = 199) and validation subgroups (n = 199). A new anthropometric equation was developed in the development subgroup from data obtained on body volume (BV), weight, and sex, where the BV was calculated from participants' height. Then the equation was validated in the validation subgroup using the Bland and Altman procedure, bias, and pure error. External validation was performed using a sample from Tunisia (n = 220, 51.8% female, 18-65 y). RESULTS Bias in predicting TBW showed unacceptable value for all previously published equations as it was significantly overestimated. The following new equation using anthropometric measurements [TBW (kg) = -5.249 + 107.502 BV (L) + 0.289 weight (kg) + 2.015 sex (male: 1, female: 0); (R2 = 0.91, RMSE = 1.885 kg)] was developed, and its internal validation was confirmed. The generated bias and pure error values were 0.047 kg (95% CI: -0.235, 0.330) and 2.02 kg (95% CI: 1.73, 2.31), respectively. The external validation of the new TBW prediction equation on a Tunisian sample showed a bias and pure error values of 0.07 kg (95% CI: -0.289, 0.429) and 2.36 kg, respectively. CONCLUSIONS The results indicate that the new anthropometric-based prediction equation provides a good estimation of TBW and other body composition compartments. It could be recommended as an alternative method to assess body composition for epidemiological and clinical studies.
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Affiliation(s)
- Khalid El Kari
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco.
| | - Amani Mankai
- Institut National de Nutrition et Technologie alimentaire de Tunis, Tunis, Tunisia
| | - Donia El Kouki
- Institut National de Nutrition et Technologie alimentaire de Tunis, Tunis, Tunisia
| | - Slimane Mehdad
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco; Institut National de Nutrition et Technologie alimentaire de Tunis, Tunis, Tunisia; Physiology and Physiopathology Research Team, Research Centre of Human Pathologies Genomics, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Kaoutar Benjeddou
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco
| | - Houda El Hsaini
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco; Institut National de Nutrition et Technologie alimentaire de Tunis, Tunis, Tunisia; Physiology and Physiopathology Research Team, Research Centre of Human Pathologies Genomics, Faculty of Sciences, Mohammed V University, Rabat, Morocco; College of Health Sciences, International University of Rabat, Salé, Morocco
| | - Mohammed El Mzibri
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco
| | - Hassan Aguenaou
- RDC-Nutrition, Ibn Tofaïl University, Centre National de l'Énergie, des Sciences et Techniques Nucléaires, Kenitra, Morocco
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Badache H, Boussetta S, Elgaaeid AB, Cherni L, El-khil HK. Investigation of the genetic structure of Kabyle and Chaouia Algerian populations through the polymorphism of Alu insertion markers. Ann Hum Biol 2019; 46:150-159. [DOI: 10.1080/03014460.2019.1588994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hocine Badache
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
| | - Sami Boussetta
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
| | - Amel Benammar Elgaaeid
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
| | - Lotfi Cherni
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
- Higher Institute of Biotechnology, University of Monastir, Tunisia
| | - Houssein Khodjet El-khil
- Laboratory of Genetics, Immunology and Human Pathology, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
- Higher Institute of Biotechnology, University of Monastir, Tunisia
- Department of Biomedical Sciences, College of Health Sciences Qatar University, Doha, Qatar
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Neffati A, Sellami MH, Bellali H, Kâabi H, Chaabene M, Hmida S. [Polymorphism of human platelet antigens in Tunisian population: Clinical and anthropological interests]. Transfus Clin Biol 2019; 26:266-272. [PMID: 30827792 DOI: 10.1016/j.tracli.2019.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/04/2019] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Human Platelet Antigens (HPA) are of considerable interest in obstetric transfusion medicine and anthropological genetics. This study aims to provide clinicians with a detailed database of HPA antigenic variants, which allows them to estimate the probability of allo-immunisation of each antigen. In addition, it aims to make an interethnic comparison of the Tunisian population with other populations. METHODS The target population consists of 324 healthy and unrelated Tunisian blood donors recruited from the National Blood Transfusion Center in Tunis. DNA extraction was performed by the Salting Out method and molecular genotyping was performed by the PCR-SSP technique. The statistical analysis was performed using two approaches: manual calculation and computerized calculation. Phylogenetic trees were constructed through the use of Standard Genetic Distances that were calculated from allelic frequencies. RESULTS With the exception of the HPA-4 system, statistical analysis showed that all HPA systems are polymorphic especially the two systems HPA-3 and HPA-15. The inter-ethnic analysis showed that Tunisians are closer to North Africans and Caucasians than Sub-Saharan and Asian populations, which shows genetic mixing between Tunisians, Arabs, Europeans and Africans. CONCLUSION The results of this study could be exploited to prepare a ready-to-use genotyping plate dedicated to HPA antigens, with the aim of ensuring better management, especially for polytransfused patients.
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Affiliation(s)
- A Neffati
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie.
| | - M H Sellami
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie
| | - H Bellali
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie
| | - H Kâabi
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie
| | - M Chaabene
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie
| | - S Hmida
- Unité de recherche « immunogénétique, thérapie cellulaire et transfusion sanguine », département d'immuno-hématologie, centre national de transfusion sanguine de Tunis, université de Tunis El Manar, 13, rue Djbel-Lakhdar, 1006 Bab Saadoun, Tunis, Tunisie
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Elloumi-Zghal H, Chaabouni Bouhamed H. Genetics and genomic medicine in Tunisia. Mol Genet Genomic Med 2018; 6:134-159. [PMID: 29663716 PMCID: PMC5902400 DOI: 10.1002/mgg3.392] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 03/07/2018] [Indexed: 01/19/2023] Open
Abstract
Genetics and genomic medicine in Tunisia.
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Čížková M, Hofmanová Z, Mokhtar MG, Janoušek V, Diallo I, Munclinger P, Černý V. Alu insertion polymorphisms in the African Sahel and the origin of Fulani pastoralists. Ann Hum Biol 2017; 44:537-545. [PMID: 28502204 DOI: 10.1080/03014460.2017.1328073] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND The origin of Western African pastoralism, represented today by the Fulani nomads, has been a highly debated issue for the past decades, and has not yet been conclusively resolved. AIM This study focused on Alu polymorphisms in sedentary and nomadic populations across the African Sahel to investigate patterns of diversity that can complement the existing results and contribute to resolving issues concerning the origin of West African pastoralism. SUBJECTS AND METHODS A new dataset of 21 Alu biallelic markers covering a substantial part of the African Sahel has been analysed jointly with several published North African populations. RESULTS Interestingly, with regard to Alu variation, the relationship of Fulani pastoralists to North Africans is not as evident as was earlier revealed by studies of uniparental loci such as mtDNA and NRY. Alu insertions point rather to an affinity of Fulani pastoralists to Eastern Africans also leading a pastoral lifestyle. CONCLUSIONS It is suggested that contemporary Fulani pastoralists might be descendants of an ancestral Eastern African population that, while crossing the Sahara in the Holocene, admixed slightly with a population of Eurasian (as evidenced by uniparental polymorphisms) ancestry. It seems that, in the Fulani pastoralists, Alu elements reflect more ancient genetic relationships than do uniparental genetic systems.
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Affiliation(s)
- Martina Čížková
- a Department of Anthropology and Human Genetics, Faculty of Science , Charles University , Prague , Czech Republic
| | - Zuzana Hofmanová
- a Department of Anthropology and Human Genetics, Faculty of Science , Charles University , Prague , Czech Republic.,b Palaeogenetics Group , Johannes Gutenberg University Mainz , Mainz , Germany
| | - Mohammed G Mokhtar
- c Arabic Department, Faculty of Arts , University of Kordofan , Al-Ubayyid , Sudan
| | - Václav Janoušek
- d Department of Zoology, Faculty of Science , Charles University , Prague , Czech Republic
| | - Issa Diallo
- e Département de Linguistique et Langues Nationales , Institut des Sciences des Sociétés, CNRST , Ouagadougou , Burkina Faso
| | - Pavel Munclinger
- d Department of Zoology, Faculty of Science , Charles University , Prague , Czech Republic
| | - Viktor Černý
- f Department of the Archaeology of Landscape and Archaeobiology, Archaeogenetics Laboratory , Institute of Archaeology of the Academy of Sciences of the Czech Republic , Prague , Czech Republic
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Fekih-Mrissa N, Bedoui I, Sayeh A, Derbali H, Mrad M, Mrissa R, Nsiri B. Association between an angiotensin-converting enzyme gene polymorphism and Alzheimer's disease in a Tunisian population. Ann Gen Psychiatry 2017; 16:41. [PMID: 29176997 PMCID: PMC5693601 DOI: 10.1186/s12991-017-0164-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 11/08/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The angiotensin-converting enzyme gene (ACE) insertion/deletion (I/D or indel) polymorphism has long been linked to Alzheimer's disease (AD), but the interpretation of established data remains controversial. The aim of this study was to determine whether the angiotensin-converting enzyme is associated with the risk of Alzheimer's disease in Tunisian patients. METHODS We analyzed the genotype and allele frequency distribution of the ACE I/D gene polymorphism in 60 Tunisian AD patients and 120 healthy controls. RESULTS There is a significantly increased risk of AD in carriers of the D/D genotype (51.67% in patients vs. 31.67% in controls; p = .008, OR = 2.32). The D allele was also more frequently found in patients compared with controls (71.67% vs. 56.25%; p = .003, OR = 2.0). Moreover, as assessed by the Mini-Mental State Examination, patient D/D carriers were more frequently found to score in the severe category of dementia (65%) as compared to the moderate category (32%) or mild category (3%). CONCLUSIONS The D/D genotype and D allele of the ACE I/D polymorphism were associated with an increased risk in the development of AD in a Tunisian population. Furthermore, at the time of patient evaluation (average age 75 years), patients suffering with severe dementia were found predominantly in D/D carriers and, conversely, the D/D genotype and D allele were more frequently found in AD patients with severe dementia. These preliminary exploratory results should be confirmed in larger studies and further work is required to explore and interpret possible alternative findings in diverse populations.
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Affiliation(s)
- Najiba Fekih-Mrissa
- Laboratory of Molecular Biology, Department of Hematology, Military Hospital of Tunisia, Mont Fleury, 1008 Tunis, Tunisia
| | - Ines Bedoui
- Department of Neurology, Military Hospital of Tunisia, Montfleury, Tunis, 1008 Tunisia
| | - Aycha Sayeh
- Laboratory of Molecular Biology, Department of Hematology, Military Hospital of Tunisia, Mont Fleury, 1008 Tunis, Tunisia
| | - Hajer Derbali
- Department of Neurology, Military Hospital of Tunisia, Montfleury, Tunis, 1008 Tunisia
| | - Meriem Mrad
- Laboratory of Molecular Biology, Department of Hematology, Military Hospital of Tunisia, Mont Fleury, 1008 Tunis, Tunisia
| | - Ridha Mrissa
- Department of Neurology, Military Hospital of Tunisia, Montfleury, Tunis, 1008 Tunisia
| | - Brahim Nsiri
- Laboratory of Molecular Biology, Department of Hematology, Military Hospital of Tunisia, Mont Fleury, 1008 Tunis, Tunisia
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Kefi R, Hechmi M, Naouali C, Jmel H, Hsouna S, Bouzaid E, Abdelhak S, Beraud-Colomb E, Stevanovitch A. On the origin of Iberomaurusians: new data based on ancient mitochondrial DNA and phylogenetic analysis of Afalou and Taforalt populations. Mitochondrial DNA A DNA Mapp Seq Anal 2016; 29:147-157. [PMID: 28034339 DOI: 10.1080/24701394.2016.1258406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The Western North African population was characterized by the presence of Iberomaurusian civilization at the Epiplaeolithic period (around 20,000 years before present (YBP) to 10,000 YBP). The origin of this population is still not clear: they may come from Europe, Near East, sub-Saharan Africa or they could have evolved in situ in North Africa. With the aim to contribute to a better knowledge of the settlement of North Africa we analysed the mitochondrial DNA extracted from Iberomaurusian skeletons exhumed from the archaeological site of Afalou (AFA) (15,000-11,000 YBP) in Algeria and from the archaeological site of Taforalt (TAF) (23,000-10,800 YBP) in Morocco. Then, we carried out a phylogenetic analysis relating these Iberomaurusians to 61 current Mediterranean populations. The genetic structure of TAF and AFA specimens contains only North African and Eurasian maternal lineages. These finding demonstrate the presence of these haplotypes in North Africa from at least 20,000 YBP. The very low contribution of a Sub-Saharan African haplotype in the Iberomaurusian samples is confirmed. We also highlighted the existence of genetic flows between Southern and Northern coast of the Mediterranean.
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Affiliation(s)
- Rym Kefi
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia.,b University Tunis El Manar , Tunis , Tunisia
| | - Meriem Hechmi
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia
| | - Chokri Naouali
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia.,b University Tunis El Manar , Tunis , Tunisia
| | - Haifa Jmel
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia
| | - Sana Hsouna
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia.,b University Tunis El Manar , Tunis , Tunisia
| | - Eric Bouzaid
- c Institut National de Police Scientifique Laboratoire de Marseille , Marseille , France
| | - Sonia Abdelhak
- a Laboratory of Biomedical Genomics and Oncogenetics , Institut Pasteur de Tunis , Tunis , Tunisia.,b University Tunis El Manar , Tunis , Tunisia
| | | | - Alain Stevanovitch
- c Institut National de Police Scientifique Laboratoire de Marseille , Marseille , France
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A novel mutation in the AGXT gene causing primary hyperoxaluria type I: genotype–phenotype correlation. J Genet 2016; 95:659-66. [DOI: 10.1007/s12041-016-0676-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Carreras-Torres R, Ferran A, Zanetti D, Esteban E, Varesi L, Pojskic N, Coia V, Chaabani H, Via M, Moral P. Population structure from NOS genes correlates with geographical differences in coronary incidence across Europe. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2016; 161:634-645. [PMID: 27500977 DOI: 10.1002/ajpa.23063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 06/19/2016] [Accepted: 07/26/2016] [Indexed: 11/05/2022]
Abstract
OBJECTIVES The population analysis of cardiovascular risk and non-risk genetic variation can help to identify adaptive or random demographic processes that shaped coronary incidence variation across geography. MATERIAL AND METHODS In this study, 114 single nucleotide polymorphisms and 17 tandem repeat polymorphisms from Nitric Oxide Synthases (NOS) regions were analyzed in 1686 individuals from 35 populations from Europe, North Africa, and the Middle East. NOS genes encode for key enzymes on nitric oxide availability, which is involved in several cardiovascular processes. These genetic variations were used to test for selection and to infer the population structure of NOS regions. Moreover, we tested whether the variation in the incidence of coronary events and in the levels of classical risk factors in 11 of these European populations could be explained by the population structure estimates. RESULTS Our results supported, first, the absence of clear signs of selection for NOS genetic variants associated with cardiovascular diseases, and second, the presence of a continuous genetic pattern of variation across European and North African populations without a Mediterranean barrier for gene flow. Finally, population structure estimates from NOS regions are closely correlated with coronary event rates and classical risk parameters (explaining 39-98%) among European populations. CONCLUSION Our results reinforce the hypothesis that genetic bases of cardiovascular diseases and associated complex phenotypes could be geographically shaped by random demographic processes.
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Affiliation(s)
- Robert Carreras-Torres
- Departament Biologia Animal, Unitat d'Antropologia, Facultat de Biologia, Universitat de Barcelona, Spain
| | - Albert Ferran
- Departament Biologia Animal, Unitat d'Antropologia, Facultat de Biologia, Universitat de Barcelona, Spain
| | - Daniela Zanetti
- Departament Biologia Animal, Unitat d'Antropologia, Facultat de Biologia, Universitat de Barcelona, Spain
| | - Esther Esteban
- Departament Biologia Animal, Unitat d'Antropologia, Facultat de Biologia, Universitat de Barcelona, Spain.,Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Spain
| | - Laurent Varesi
- Laboratoire de virologie, Faculté des Sciences et Techniques, Université de Corse, France
| | - Naris Pojskic
- Laboratory for Molecular Genetics of Natural Resources, Institute for Genetic Engineering and Biotechnology, University of Sarajevo, Bosnia and Herzegovina
| | - Valentina Coia
- Accademia Europea di Bolzano (EURAC), Istituto per le Mummie e l'Iceman, Bolzano, Italy
| | - Hassen Chaabani
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Marc Via
- Departament Psicologia Clínica i Psicobiologia and Institute of Neurosciences (UBNEURO), Universitat de Barcelona, Spain.,Institut de Recerca Pediàtrica Hospital Sant Joan de Déu (IRP_HSJD), Barcelona, Spain
| | - Pedro Moral
- Departament Biologia Animal, Unitat d'Antropologia, Facultat de Biologia, Universitat de Barcelona, Spain.,Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Spain
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Fernández-Santander A, Novillo A, Gaibar M, Romero-Lorca A, Moral P, Sánchez-Cuenca D, Amir N, Chaabani H, Harich N, Esteban ME. Cytochrome and sulfotransferase gene variation in north African populations. Pharmacogenomics 2016; 17:1415-23. [PMID: 27471773 DOI: 10.2217/pgs-2016-0016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To describe the diversity of four cytochrome and four sulfotransferase polymorphisms in six north African samples. Scarce data have been compiled for these samples despite the rich genetic background of north African populations. MATERIALS & METHODS CYP3A4*1B, CYP3A4*17, CYP3A4*3, CYP3A5*3, SULT1A1*2, SULT1A2*2, SULT1A2*3 and SULT1E1*2 polymorphisms were explored in 556 individuals from Morocco, Algeria, Tunisia and Libya. RESULTS Allele frequencies in our samples largely exceeded the variation ranges described for European populations, especially for CYP3A4*1B, SULT1A1*2 and SULT1A2*3. CONCLUSION North African populations are heterogeneous, genetically diverse and show a considerable sub-Saharan African contribution for markers associated with increased risk of prostate cancer and with differential drug metabolism.
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Affiliation(s)
| | - Apolonia Novillo
- Basic Biomedical Sciences Department, Universidad Europea de Madrid, Madrid, Spain
| | - María Gaibar
- Basic Biomedical Sciences Department, Universidad Europea de Madrid, Madrid, Spain
| | - Alicia Romero-Lorca
- Basic Biomedical Sciences Department, Universidad Europea de Madrid, Madrid, Spain
| | - Pedro Moral
- Section of Zoology and Anthropology, Department of Evolutive Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain.,Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
| | - David Sánchez-Cuenca
- Departamento de Genética, Antropología Física y Fisiología Animal (UPV/EHU), Leioa, Spain
| | - Nadir Amir
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Algeria
| | - Hassen Chaabani
- Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Nourdin Harich
- Départément de Biologie, Faculté des Sciences, Université Chouaib Doukkali, El Jadida, Morocco
| | - Maria Esther Esteban
- Section of Zoology and Anthropology, Department of Evolutive Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain.,Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona, Barcelona, Spain
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Genetic diversity of CYP3A4 and CYP3A5 polymorphisms in North African populations from Morocco and Tunisia. Int J Biol Markers 2015; 30:e148-51. [PMID: 25385241 DOI: 10.5301/jbm.5000118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2014] [Indexed: 02/04/2023]
Abstract
The genes CYP3A4 and CYP3A5 form part of a cluster of cytochrome P450 genes involved in drug metabolism reactions. The allelic variants of these genes CYP3A4*1B, CYP3A4*3, CYP3A4*17 and CYP3A5*3 have been linked both to the reduced catalytic activity of cytochromes and to prostate cancer risk in whites, though scarce data exist for North African populations. The main objective of this study was to describe CYP3A4*3, CYP3A4*17, CYP3A4*1B and CYP3A5*3 allele frequencies and haplotype variation in Moroccan Berbers and the general Tunisian population. The data obtained for the Tunisian participants were consistent with the European allele frequency ranges described, while Moroccan Berbers showed high frequencies of CYP3A4*17 (1.8%), CYP3A4*3 (8.5%) and the CYP3A4*1B/CYP3A5*3 haplotype (18.4%). This haplotype, linked to an increased risk of prostate cancer, was detected at a much higher frequency compared with the present Tunisian population (8.4%) or with reported frequencies for populations such as whites (0.6%) or African Americans (5.3%).
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Association between haptoglobin 2-2 genotype and coronary artery disease and its severity in a tunisian population. Biochem Genet 2014; 52:269-82. [PMID: 24535155 DOI: 10.1007/s10528-014-9646-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 09/09/2013] [Indexed: 12/12/2022]
Abstract
Haptoglobin (Hp) polymorphism generates three common human genotypes (Hp1-1, Hp2-1, and Hp2-2), having functional differences, related to the risk of development of cardiovascular diseases. These functions are a consequence of hemoglobin binding that leads to the synthesis of an antioxidant like ferritin. We explored the association of Hp polymorphism with significant coronary stenosis (SCS) and its severity within 400 Tunisian patients, using genotyping, biochemical parameters, and the Gensini score. After adjustments for age and gender, Hp2-2 was associated with the highest ferritin but the lowest Hp concentrations. After adjustments for confounding parameters, the OR of SCS associated with Hp2-2 was 1.74 (95% CI 1.18-2.58; p = 0.005). This effect was enhanced within diabetics (OR 1.90, 95% CI 1.11-3.24; p = 0.018), obese subjects (OR 1.98, 95% CI 1.10-4.86; p = 0.034), and smokers (OR 4.17, 95% CI 1.54-1.29; p = 0.005). The Hp2-2 genotype is associated with an increase in SCS especially in diabetics, the obese, and smokers.
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BAHRI RAOUDHA, ESTEBAN ESTHER, BEN HALIMA ABIR, MORAL PEDRO, CHAABANI HASSEN. Distinctive genetic signatures of Alu/STR compound systems revealed by analyses of Mediterranean and Middle East populations. ANTHROPOL SCI 2014. [DOI: 10.1537/ase.140602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- RAOUDHA BAHRI
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir
| | - ESTHER ESTEBAN
- Secció d’Antropologia, Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Barcelona
| | - ABIR BEN HALIMA
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir
| | - PEDRO MORAL
- Secció d’Antropologia, Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Barcelona
| | - HASSEN CHAABANI
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir
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Elhayek D, Perez de Nanclares G, Chouchane S, Hamami S, Mlika A, Troudi M, Leban N, Ben Romdane W, Gueddiche MN, El Amri F, Mrabet S, Ben Chibani J, Castaño L, Haj Khelil A, Ariceta G. Molecular diagnosis of distal renal tubular acidosis in Tunisian patients: proposed algorithm for Northern Africa populations for the ATP6V1B1, ATP6V0A4 and SCL4A1 genes. BMC MEDICAL GENETICS 2013; 14:119. [PMID: 24252324 PMCID: PMC4225572 DOI: 10.1186/1471-2350-14-119] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 11/08/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND Primary distal renal tubular acidosis (dRTA) caused by mutations in the genes that codify for the H + -ATPase pump subunits is a heterogeneous disease with a poor phenotype-genotype correlation. Up to now, large cohorts of dRTA Tunisian patients have not been analyzed, and molecular defects may differ from those described in other ethnicities. We aim to identify molecular defects present in the ATP6V1B1, ATP6V0A4 and SLC4A1 genes in a Tunisian cohort, according to the following algorithm: first, ATP6V1B1 gene analysis in dRTA patients with sensorineural hearing loss (SNHL) or unknown hearing status. Afterwards, ATP6V0A4 gene study in dRTA patients with normal hearing, and in those without any structural mutation in the ATP6V1B1 gene despite presenting SNHL. Finally, analysis of the SLC4A1 gene in those patients with a negative result for the previous studies. METHODS 25 children (19 boys) with dRTA from 20 families of Tunisian origin were studied. DNAs were extracted by the standard phenol/chloroform method. Molecular analysis was performed by PCR amplification and direct sequencing. RESULTS In the index cases, ATP6V1B1 gene screening resulted in a mutation detection rate of 81.25%, which increased up to 95% after ATP6V0A4 gene analysis. Three ATP6V1B1 mutations were observed: one frameshift mutation (c.1155dupC; p.Ile386fs), in exon 12; a G to C single nucleotide substitution, on the acceptor splicing site (c.175-1G > C; p.?) in intron 2, and one novel missense mutation (c.1102G > A; p.Glu368Lys), in exon 11. We also report four mutations in the ATP6V0A4 gene: one single nucleotide deletion in exon 13 (c.1221delG; p.Met408Cysfs*10); the nonsense c.16C > T; p.Arg6*, in exon 3; and the missense changes c.1739 T > C; p.Met580Thr, in exon 17 and c.2035G > T; p.Asp679Tyr, in exon 19. CONCLUSION Molecular diagnosis of ATP6V1B1 and ATP6V0A4 genes was performed in a large Tunisian cohort with dRTA. We identified three different ATP6V1B1 and four different ATP6V0A4 mutations in 25 Tunisian children. One of them, c.1102G > A; p.Glu368Lys in the ATP6V1B1 gene, had not previously been described. Among deaf since childhood patients, 75% had the ATP6V1B1 gene c.1155dupC mutation in homozygosis. Based on the results, we propose a new diagnostic strategy to facilitate the genetic testing in North Africans with dRTA and SNHL.
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Affiliation(s)
- Donia Elhayek
- Department of Pediatrics, School of Medicine and Odontology, UPV/EHU, Bizkaia, Spain.
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Halima AB, Bahri R, Esteban E, Aribia MHB, Moral P, Chaabani H. Ethnic composition and genetic differentiation of the Libyan population: insights onAlupolymorphisms. Ann Hum Biol 2013; 41:229-37. [DOI: 10.3109/03014460.2013.850112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Salem AH, Bahri R, Jarjanazi H, Chaabani H. Geographical and social influences on genetic diversity within the Egyptian population: analyses ofAluinsertion polymorphisms. Ann Hum Biol 2013; 41:61-6. [DOI: 10.3109/03014460.2013.826734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Association of POL1, MALT1, MC4R, PHLPP and DSEL single nucleotide polymorphisms in chromosome 18q region with type 2 diabetes in Tunisians. Gene 2013; 527:243-7. [DOI: 10.1016/j.gene.2013.05.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2012] [Revised: 03/13/2013] [Accepted: 05/06/2013] [Indexed: 12/21/2022]
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Ben-Mustapha I, Ben-Farhat K, Guirat-Dhouib N, Dhemaied E, Larguèche B, Ben-Ali M, Chemli J, Bouguila J, Ben-Mansour L, Mellouli F, Khemiri M, Béjaoui M, Barbouche MR. Clinical, Immunological and Genetic Findings of a Large Tunisian Series of Major Histocompatibility Complex Class II Deficiency Patients. J Clin Immunol 2013; 33:865-70. [DOI: 10.1007/s10875-013-9863-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/02/2013] [Indexed: 11/29/2022]
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Bahri R, Halima AB, Ayadi I, Esteban E, Alfadhli SM, Rebai A, Moral P, Chaabani H. Genetic position of Bahrain natives among wider Middle East populations according to Alu insertion polymorphisms. Ann Hum Biol 2012; 40:35-40. [DOI: 10.3109/03014460.2012.728622] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abdelhedi R, Kharrat N, Bouayed NA, Abid L, Abdelmouleh W, Sahnoun IT, Alfadhli S, Laroussi L, Rebai A. Lack of association of NOS3 and ACE gene polymorphisms with coronary artery disease in Southern Tunisia. Biochem Genet 2012; 51:92-100. [PMID: 23011259 DOI: 10.1007/s10528-012-9545-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 07/18/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Rania Abdelhedi
- Laboratory of Microorganisms and Biomolecules, Research Group on Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road, P.O. Box 1177, 3018, Sfax, Tunisia.
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Romdhane L, Kefi R, Azaiez H, Ben Halim N, Dellagi K, Abdelhak S. Founder mutations in Tunisia: implications for diagnosis in North Africa and Middle East. Orphanet J Rare Dis 2012; 7:52. [PMID: 22908982 PMCID: PMC3495028 DOI: 10.1186/1750-1172-7-52] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 08/02/2012] [Indexed: 01/17/2023] Open
Abstract
Background Tunisia is a North African country of 10 million inhabitants. The native background population is Berber. However, throughout its history, Tunisia has been the site of invasions and migratory waves of allogenic populations and ethnic groups such as Phoenicians, Romans, Vandals, Arabs, Ottomans and French. Like neighbouring and Middle Eastern countries, the Tunisian population shows a relatively high rate of consanguinity and endogamy that favor expression of recessive genetic disorders at relatively high rates. Many factors could contribute to the recurrence of monogenic morbid trait expression. Among them, founder mutations that arise in one ancestral individual and diffuse through generations in isolated communities. Method We report here on founder mutations in the Tunisian population by a systematic review of all available data from PubMed, other sources of the scientific literature as well as unpublished data from our research laboratory. Results We identified two different classes of founder mutations. The first includes founder mutations so far reported only among Tunisians that are responsible for 30 genetic diseases. The second group represents founder haplotypes described in 51 inherited conditions that occur among Tunisians and are also shared with other North African and Middle Eastern countries. Several heavily disabilitating diseases are caused by recessive founder mutations. They include, among others, neuromuscular diseases such as congenital muscular dystrophy and spastic paraglegia and also severe genodermatoses such as dystrophic epidermolysis bullosa and xeroderma pigmentosa. Conclusion This report provides informations on founder mutations for 73 genetic diseases either specific to Tunisians or shared by other populations. Taking into account the relatively high number and frequency of genetic diseases in the region and the limited resources, screening for these founder mutations should provide a rapid and cost effective tool for molecular diagnosis. Indeed, our report should help designing appropriate measures for carrier screening, better evaluation of diseases burden and setting up of preventive measures at the regional level.
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Affiliation(s)
- Lilia Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics, Institut Pasteur de Tunis, BP 74, 13 Place Pasteur, Tunis 1002, Tunisia
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Mtiraoui N, Turki A, Nemr R, Echtay A, Izzidi I, Al-Zaben GS, Irani-Hakime N, Keleshian SH, Mahjoub T, Almawi WY. Contribution of common variants of ENPP1, IGF2BP2, KCNJ11, MLXIPL, PPARγ, SLC30A8 and TCF7L2 to the risk of type 2 diabetes in Lebanese and Tunisian Arabs. DIABETES & METABOLISM 2012; 38:444-9. [PMID: 22749234 DOI: 10.1016/j.diabet.2012.05.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 05/07/2012] [Accepted: 05/07/2012] [Indexed: 12/15/2022]
Abstract
BACKGROUND While several type 2 diabetes mellitus (T2DM) susceptibility loci identified through genome-wide association studies (GWAS) have been replicated in many populations, their association in Arabs has not been reported. For this reason, the present study looked at the contribution of ENNP1 (rs1044498), IGF2BP2 (rs1470579), KCNJ11 (rs5219), MLXIPL (rs7800944), PPARγ (rs1801282), SLC30A8 (rs13266634) and TCF7L2 (rs7903146) SNPs to the risk of T2DM in Lebanese and Tunisian Arabs. METHODS Study subjects (case/controls) were Lebanese (751/918) and Tunisians (1470/838). Genotyping was carried out by the allelic discrimination method. RESULTS In Lebanese and Tunisians, neither ENNP1 nor MLXIPL was associated with T2DM, whereas TCF7L2 was significantly associated with an increased risk of T2DM in both the Lebanese [P < 0.001; OR (95% CI): 1.38 (1.20-1.59)] and Tunisians [P < 0.001; OR (95% CI): 1.36 (1.18-1.56)]. Differential associations of IGF2BP2, KCNJ11, PPARγ and SLC30A8 with T2DM were noted in the two populations. IGF2BP2 [P = 1.3 × 10(-5); OR (95% CI): 1.66 (1.42-1.94)] and PPARγ [P = 0.005; OR (95% CI): 1.41 (1.10-1.80)] were associated with T2DM in the Lebanese, but not Tunisians, while KCNJ11 [P = 8.0 × 10(-4); OR (95% CI): 1.27 (1.09-1.47)] and SLC30A8 [P = 1.6 × 10(-5); OR (95% CI): 1.37 (1.15-1.62)] were associated with T2DM in the Tunisians, but not Lebanese, after adjusting for gender and body mass index. CONCLUSION T2DM susceptibility loci SNPs identified through GWAS showed differential associations with T2DM in two Arab populations, thus further confirming the ethnic contributions of these variants to T2DM susceptibility.
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Affiliation(s)
- N Mtiraoui
- Research Unit of Biology and Genetics of Hematological and Autoimmune diseases, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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Bahri R, El Moncer W, Al-Batayneh K, Sadiq M, Esteban E, Moral P, Chaabani H. Genetic differentiation and origin of the Jordanian population: an analysis of Alu insertion polymorphisms. Genet Test Mol Biomarkers 2011; 16:324-9. [PMID: 22106835 DOI: 10.1089/gtmb.2011.0197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM Although much of Jordan is covered by desert, its north-western region forms part of the Fertile Crescent region that had given a rich past to Jordanians. This past, scarcely described by historians, is not yet clarified by sufficient genetic data. Thus in this paper we aim to determine the genetic differentiation of the Jordanian population and to discuss its origin. METHODS A total of 150 unrelated healthy Jordanians were investigated for ten Alu insertion polymorphisms. Genetic relationships among populations were estimated by a principal component (PC) plot based on the analyses of the R-matrix software. RESULTS Statistical analysis showed that the Jordanian population is not significantly different from the United Arab Emirates population or the North Africans. This observation, well represented in PC plot, suggests a common origin of these populations belonging respectively to ancient Mesopotamia, Arabia, and North Africa. CONCLUSION Our results are compatible with ancient peoples' movements from Arabia to ancient Mesopotamia and North Africa as proposed by historians and supported by previous genetic results. The original genetic profile of the Jordanian population, very likely Arabian Semitic, has not been subject to significant change despite the succession of several civilizations.
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Affiliation(s)
- Raoudha Bahri
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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El Moncer W, Bahri R, Esteban E, Abdenni-Guenounou B, Moral P, Ben Chibani J, Chaabani H. Research of the origin of a particular Tunisian group using a physical marker and Alu insertion polymorphisms. Genet Mol Biol 2011; 34:371-6. [PMID: 21931506 PMCID: PMC3168174 DOI: 10.1590/s1415-47572011005000021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 03/23/2011] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to show how, in some particular circumstances, a physical marker can be used along with molecular markers in the research of an ancient people movement. A set of five Alu insertions was analysed in 42 subjects from a particular Tunisian group (El Hamma) that has, unlike most of the Tunisian population, a very dark skin, similar to that of sub-Saharans, and in 114 Tunisian subjects (Gabes sample) from the same governorate, but outside the group. Our results showed that the El Hamma group is genetically midway between sub-Saharan populations and North Africans, whereas the Gabes sample is clustered among North Africans. In addition, The A25 Alu insertion, considered characteristic to sub-Saharan Africans, was present in the El Hamma group at a relatively high frequency. This frequency was similar to that found in sub-Saharans from Nigeria, but significantly different from those found in the Gabes sample and in other North African populations. Our molecular results, consistent with the skin color status, suggest a sub-Saharan origin of this particular Tunisian group.
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Affiliation(s)
- Wifak El Moncer
- Laboratory of Human Genetics and Anthropology, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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