The MCP-1 (CCL2) -2518 GG genotype is associated with protection against pulmonary tuberculosis in Moroccan patients

  • Naima Arji National Institute of Hygiene, Agdal, Rabat, Morocco
  • Marc Busson CIB-HOG, AP-HP, IUH and INSERM, UMRS, 940, Saint-Louis Hospital, Paris, France
  • Ghali Iraqi Moulay Youssef Hospital, Ibn Sina University, Rabat, Morocco
  • Jamal Eddine Bourkadi Moulay Youssef Hospital, Ibn Sina University, Rabat, Morocco
  • Abdelaziz Benjouad Faculty of Sciences, Mohamed V University, Rabat, Morocco
  • Wahid Boukouaci CIB-HOG, AP-HP, IUH and INSERM, UMRS, 940, Saint-Louis Hospital, Paris, France
  • Ouafae Lahlou Bacteriology Department, National Institute of Hygiene, Agdal, Rabat, Morocco
  • Jouda Ben Amor Pneumology Department, Moulay Youssef Hospital, Ibn Sina University, Rabat, Morocco
  • Rajagopal Krishnamoorthy INSERM, U763, Robert Debré Hospital, Paris, France
  • Dominique Charron CIB-HOG, AP-HP, IUH and INSERM, UMRS, 940, Saint-Louis Hospital, Paris, France
  • Rajae El Aouad National Institute of Hygiene, Agdal, Rabat, Morocco
  • Ryad Tamouza CIB-HOG, AP-HP, IUH and INSERM, UMRS, 940, Saint-Louis Hospital, Paris, France
Keywords: Pulmonary tuberculosis, Monocyte chemoattractant protein-1, Interleukin-12 p40, polymorphism, Morocco.

Abstract

Introduction: Both monocyte chemoattractant protein-1 (MCP-1), also designated officially as chemokine (C-C motif) ligand 2 (CCL2), and interleukin-12 p40 (IL-12 p40) molecules, encoded by polymorphic genes, are central components of the immune response to infection by Mycobacterium tuberculosis (Mtb). Their genetic diversity has previously been associated with the outcome of tuberculosis (TB) infection. We investigated whether the MCP-1 -2518 A/G and the IL-12B (p40) +1188 A/C polymorphisms influence susceptibility to or resistance against pulmonary tuberculosis (PTB) in a Moroccan population group.
Methodology: Genomic DNA from 337 patients along with 204 healthy controls were genotyped for the above-mentioned genetic variations using polymerase chain reaction-based restriction fragment length polymorphism assay.
Results: We found a higher prevalence of homozygous MCP-1 -2518 G allele in healthy individuals than in patients (pc = 0.04; odds ratio  = 0.35; 95% confidence interval  = 0.13 - 0.86), suggesting a potential protective effect, whereas analysis of IL-12B +1188 variation failed to reveal any such association.
Conclusion: Our results are in agreement with recent findings in Ghanaian patients, complying with the known genetic admixture of the Moroccan population.

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Author Biography

Ryad Tamouza, CIB-HOG, AP-HP, IUH and INSERM, UMRS, 940, Saint-Louis Hospital, Paris, France
Associate Professor in Immunology and Immunogenetics
Published
2011-09-26
How to Cite
1.
Arji N, Busson M, Iraqi G, Bourkadi JE, Benjouad A, Boukouaci W, Lahlou O, Ben AmorJ, Krishnamoorthy R, Charron D, El AouadR, Tamouza R (2011) The MCP-1 (CCL2) -2518 GG genotype is associated with protection against pulmonary tuberculosis in Moroccan patients. J Infect Dev Ctries 6:73-78. doi: 10.3855/jidc.1925
Section
Original Articles

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