Review Article

Type I Diabetes Mellitus: Genetic Factors and Presumptive Enteroviral Etiology or Protection

Table 5

Viruses linked with type 1 diabetes in humans.

VirusFamily Mechanism of the T1D inductionModel system

Human cytomegalovirus Herpesviridae Persistent infection [102]Lymphocytes and autoantibodies (clinical study)
Molecular mimicry [103]GAD65-specific T-cells cross-react with a peptide of the HCMV (in vitro)
Bystander activation [104]Activation of CD4+ and CD8+ T-cells (clinical study)

ParvovirusParvoviridae Molecular mimicry [105]Elevated serum anti-parvovirus B19 IgM and autoantibodies (clinical study)
Induction of autoimmunity [106]Prolonged autoimmune alterations (clinical study)

RotavirusReoviridae Molecular mimicry [107]Correlation in the proliferative responses of T-cells to the similar peptides in rotavirus and islet autoantigens (in vitro)

Rubella virus Togaviridae Congenital infection [108]Children with congenital rubella-autoantibodies (clinical study)
Molecular mimicry [109]T-cell response to viral and beta cell peptides (in vitro)

Mumps virus Paramyxoviridae Loss of tolerance toward β-cells [110]Human insulinoma cell line infected with mumps (in vitro)
Molecular mimicry [111]Antibodies in serum of vaccinated and nonvaccinated children (clinical study)

Human endogenous retrovirusRetroviridae Influence of the immune response [112]Presence of antigen in T-cell subsets of patients (clinical study)

Human parechovirus Picornaviridae Induction of autoimmunity [113]Stool samples and autoantibodies (clinical study)

EchovirusPicornaviridae Molecular mimicry [114]Echovirus 9 isolated from baby was destructive for human islets (in vitro)

CoxsackievirusPicornaviridae Direct cellular injury [115]CVB4 and SJL/J mice (in vivo)
Delayed viral clearance [116]Serum of prediabetic children (clinical study)
Molecular mimicry [117]Autoantibodies in human blood samples (clinical study)
Bystander activation [118]CVB4 and NOD and BDC2.5 mice (in vivo)
Antibody-dependent enhancement [119]CVB4 and human serum-PBMC and monocyte (in vitro)
Phagocytosis of infected -cells [120]CVB3-infected human and porcine pancreatic islets (in vitro)
Loss of regulatory T-cells [121]CVB4-E2 infection of human thymic epithelial cells (in vitro)
Increased intestine permeability [122]Virus presence in the small intestine biopsy samples
Disruption in -cells neogenesis [123]CVB4-E2 or CVB4-JVB and SJL/J mice