ABSTRACT
BACKGROUND AND OBJECTIVE: Multiple sclerosis (MS) is an autoimmune inflammatory demyelinating disease of the central nervous system that mainly affects young adults. The association between susceptibility to MS and HLA class II genes, in particular the DRB1*15 allele, has been reported in diverse ethnic groups. The aim of our study was to investigate the distribution of HLA-DRB1* and -DQB1* alleles in Moroccan population and their implication in the susceptibility to the disease. METHODS: Fifty-seven MS patients were compared to 172 healthy controls unrelated to one another and matched by age, sex and ethnic origin. HLA class II (DRB1* and DQB1*) typing was performed by PCR-SSP and/or Luminex (PCR-SSO). Allelic and haplotypic frequencies, P-values, odds ratio (OR) and 95% confidence interval (CI) were calculated using the software SPSS. RESULTS: A significant increase of DRB1*15 allele frequency (17.6% vs 8.4%, OR=2.67, 95% CI=1.36-5.23, P=0.004) and HLA-DRB1*15-DQB1*06 haplotype (8.8% vs 4.08%, OR=2.78, 95% CI=1.41-5.48, P=0.002) were observed in Moroccan MS patients. No association of the DR15 allele with sex or age at onset was appreciated. Concerning HLA-DQB1* alleles, no significant difference between patients and controls was found. CONCLUSIONS: Our results reveal a role for HLA-DRB1*15 allele molecules in the predisposition of Moroccan patients to MS. Although this study should be confirmed on a larger sample size, it analyzes for the first time the possible role of a genetic marker for susceptibility to MS in Moroccan population.
Subject(s)
Genes, MHC Class II/physiology , Multiple Sclerosis/genetics , Adult , Case-Control Studies , Female , Gene Frequency , Genetic Predisposition to Disease , HLA-DQ beta-Chains/genetics , HLA-DRB1 Chains/genetics , Humans , Male , Middle Aged , Morocco/epidemiology , Multiple Sclerosis/epidemiology , Risk Factors , Young AdultABSTRACT
We report 12 cases of Behçet's disease (BD) in children. The mean age of symptom onset was 12.4 years. Four patients (33.3%) had a past familial history of BD. Clinical manifestations were: oral aphtosis (n = 12), genital aphtosis (n = 9), ocular involvement (n = 9), neuro-Behçet (n = 6), venous thrombosis (n = 4), articular involvement (n = 3), and entero-Behçet (n = 1). All patients but one were initially treated with steroids; three cases with ocular involvement were treated with chlorambucil; and three other cases of neuro-Behçet were treated with cyclophosphamide. After a mean follow-up of 4 years, four patients with neurological involvement developed steroid-dependence with recurrence of symptoms. Four patients had optic atrophy with blindness.
Subject(s)
Behcet Syndrome/diagnosis , Behcet Syndrome/genetics , Adolescent , Behcet Syndrome/classification , Child , Female , Humans , Male , Morocco , Nuclear Family , Retrospective StudiesABSTRACT
Tuberculosis of the craniocervical junction (CCJ) is exceedingly rare but carries a risk of compression of the medulla oblongata and upper spinal cord. Three cases among 63 patients with spinal tuberculosis are reported. Mean age was 51 years (range, 20-69) and mean time to diagnosis was 4.6 months (range, 1-8). Although atlantoaxial dislocation was a consistent feature, none of the patients had neurological deficits. Computed tomography of the CCJ disclosed a suggestive pattern combining osteolysis and an abscess anterior to the spine. The diagnosis was confirmed by microbiological studies in two cases and histology in one. The outcome was favorable after antituberculous therapy, immobilization of the neck, and surgical fusion. Although tuberculosis remains common in developing countries, involvement of the CCJ is rare. Tuberculosis of the CCJ carries a risk of instability and severe neuraxis compression. Consequently, early diagnosis and treatment are of the utmost importance.
