title: Is there a role of ACP1-ADA1 genetic complex in immune reaction? Association with T1D and with past malarial morbidity.
abstract: In this article, we confirm the positive association of acid phosphatase locus 1 (ACP1)*A/adenosine deaminase locus 1 (ADA1)*2 gametic type with type 1 diabetes (T1D) previously reported and show a negative correlation between the frequency of this gametic type with past malarial morbidity in Sardinia. One hundred seven adult women with T1D and 385 healthy adult women from the Caucasian population of Central Italy have been studied. Data on 1384 children from the central area of Sardinia have also been reexamined. T1D subjects show a highly significant increase of ACP1*A/ADA1*2 gametic type compared with healthy subjects from the same population (P = 0.003). The frequency of ACP1*A/ADA1*2 gametic type is decreasing with increasing past malarial morbidity. Because ADA1*2 allele decreases the activity of *A allele and since low ACP1 activity decreases Zeta-chain-associated protein kinase with molecular weight 70 kDa (Zap70) activity resulting in weak T-cell receptor signalling an epistatic interaction involving ADA1, ACP1 and Zap70 seems a likely mechanism for the associations observed.
authors.affiliation: Department of Biopathology and Imaging Diagnostics, University of Tor Vergata, Rome, Italy. gloria@med.uniroma2.it
authors.forename: Fulvia
authors.initials: F
authors.lastname: Gloria-Bottini
authors.forename: Patrizia
authors.initials: P
authors.lastname: Saccucci
authors.forename: Andrea
authors.initials: A
authors.lastname: Magrini
authors.forename: Egidio
authors.initials: E
authors.lastname: Bottini
mesh_terms: D000243:Adenosine Deaminase / Q000235:genetics* / Q000276:immunology*; D000328:Adult; D000483:Alleles; D016022:Case-Control Studies; D002648:Child; D003922:Diabetes Mellitus, Type 1 / Q000201:enzymology* / Q000235:genetics* / Q000276:immunology; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D007231:Infant, Newborn; D007558:Italy / Q000453:epidemiology; D008288:Malaria / Q000201:enzymology / Q000453:epidemiology* / Q000235:genetics / Q000276:immunology; D009017:Morbidity; D017027:Protein Tyrosine Phosphatases / Q000235:genetics* / Q000276:immunology*; D011518:Proto-Oncogene Proteins / Q000235:genetics* / Q000276:immunology*
chemical_list: D011518:Proto-Oncogene Proteins; C490429:ACP1 protein, human; D017027:Protein Tyrosine Phosphatases; C548482:ADA protein, human; D000243:Adenosine Deaminase