Search PubMed⌕ Search

Biomedical subjects

K Ayed

Publications and source records attributed to K Ayed.

At least 91 records · Page 5Linked to original sources
PubMed1987

HLA-A,B,C and DR antigens in a sample of the Tunisian population.

The HLA-A, B and DR phenotypes of 109 unrelated Tunisian individuals have been determined. The HLA-A and B antigen frequencies were compared with data reported for European Caucasoids and various Arab populations. Most similarities in antigen frequencies were seen between Tunisians and Kabyles from North Africa. A high frequency of HLA-A23 and HLA-Bw50 was observed in Tunisians and all Arab populations. A very close similarity in HLA-DR antigen frequencies exists between Tunisians and European Caucasoids. Linkage disequilibria between alleles of HLA loci were examined; many instances of previously reported antigen associations were seen in Tunisians, together with a number of associations which have not been described elsewhere. Aw34B8 and A2DRw14 are suggested as being common haplotypes in Tunisians.

Adult↗
PubMed1987

Discordance between red cell and saliva Lewis phenotypes in patients with hydatid cysts.

Patients with hydatid cysts and controls of the same Tunisian area were typed for ABO, Lewis and secretor phenotypes. A high incidence of red cell Le(a-b-) phenotype (34-37%) was found among hydatid cyst patients as compared to normal controls (13-16%). However, a large proportion of the patients with Le(a-b-) red cell phenotype had discordant red cell and saliva Lewis phenotypes since they secreted Lea and/or Leb antigens in saliva. In addition, 1 patient with Le(a+b-) red cell phenotype secreted Leb antigen in saliva. The remaining patients and all the controls had concordant red cell and saliva Lewis phenotypes. The discordant results between the phenotypes obtained in serum and saliva of hydatid cyst patients are probably the consequence of a decrease in the concentration of the circulating Lewis glycosphingolipids, secondary to the disease.

ABO Blood-Group System↗
PubMed1983

[Mixed connective tissue disease (Sharp syndrome) with involvement of the trigeminal nerve and facial paralysis].

The authors report a case of mixed connective tissue disease with involvement of the fifth and seventh cranial nerves. While involvement of the trigeminal nerve is well-known, that of the seventh nerve is much less so. However, seventh nerve involvement is beginning to be recognized in other connective tissue diseases such as scleroderma. Neurological manifestations in Sharp syndrome are reviewed.

Adult↗
PubMed1983

[Systemic lupus erythematosus, polymyositis and toxoplasma antibodies].

High toxoplasma antibody titers have been reported in polymyositis and other connectivitis with myositis. The authors describe a case of systemic lupus erythematosus with polymyositis and high titers of IgG toxoplasma antibodies. Studies of muscle biopsy specimens by immunofluorescence and inoculation of mice with muscle extracts failed to demonstrate the presence of Toxoplasma gondii. The nature of the toxoplasmic agression is discussed. It may be that reactivation of a previous infection due to the rupture of cysts was promoted by the immunologic disorders and complement deficiency related to systemic lupus erythematosus.

Adult↗