BACKGROUND: At the clinical onset of type 1 diabetes mellitus (T1D), enterovirus (EV) infections are suspected to play a role. EVs in blood are seen as a possible biomarker of T1D. EV infections may occur in temporal and geographic clusters and may spread within families. OBJECTIVE: We checked whether EVs were present in the blood of newly diagnosed diabetic probands and of their consenting siblings and parents. We aimed at evaluating the frequency of EV infection, whether infections were spreading within families, and which EV species were involved. SUBJECTS AND METHODS: Blood was drawn from 24 newly diagnosed diabetic children/adolescents and their family members (20 siblings and 41 parents). Blood donors and non-diabetic children/adolescents diagnosed with overweight/short stature were used as controls. RNA was extracted from plasma/leukocytes. Reverse-transcription polymerase chain reaction assays capable of detecting virtually all EV types and of giving preliminary species identification were used. RESULTS AND CONCLUSIONS: EV genomes were found in the blood of 19 of 24 (79%) diabetics, 12 of 20 (60%) non-diabetic siblings, 26 of 41 (63%) parents, and 1 of 29 (3%) pediatric controls. EVs of the A, B, C, and D species were detected, with the B and C species more prevalent. Probands and virus-positive members of each family consistently shared the same EV species. During follow-up, 4 of 20 (20%) siblings of diabetic probands developed T1D with a latency of 3-25 months. In conclusion, infection by different EV species is highly prevalent at the clinical onset and extends to family members. EV may represent a precipitating factor of T1D. However, the disease only develops in a subset of infected individuals.
BACKGROUND: At the clinical onset of type 1 diabetes mellitus (T1D), enterovirus (EV) infections are suspected to play a role. EVs in blood are seen as a possible biomarker of T1D. EV infections may occur in temporal and geographic clusters and may spread within families. OBJECTIVE: We checked whether EVs were present in the blood of newly diagnosed diabetic probands and of their consenting siblings and parents. We aimed at evaluating the frequency of EV infection, whether infections were spreading within families, and which EV species were involved. SUBJECTS AND METHODS: Blood was drawn from 24 newly diagnosed diabeticchildren/adolescents and their family members (20 siblings and 41 parents). Blood donors and non-diabeticchildren/adolescents diagnosed with overweight/short stature were used as controls. RNA was extracted from plasma/leukocytes. Reverse-transcription polymerase chain reaction assays capable of detecting virtually all EV types and of giving preliminary species identification were used. RESULTS AND CONCLUSIONS: EV genomes were found in the blood of 19 of 24 (79%) diabetics, 12 of 20 (60%) non-diabetic siblings, 26 of 41 (63%) parents, and 1 of 29 (3%) pediatric controls. EVs of the A, B, C, and D species were detected, with the B and C species more prevalent. Probands and virus-positive members of each family consistently shared the same EV species. During follow-up, 4 of 20 (20%) siblings of diabetic probands developed T1D with a latency of 3-25 months. In conclusion, infection by different EV species is highly prevalent at the clinical onset and extends to family members. EV may represent a precipitating factor of T1D. However, the disease only develops in a subset of infected individuals.
Authors: Joseph W Dean; Leeana D Peters; Christopher A Fuhrman; Howard R Seay; Amanda L Posgai; Scott E Stimpson; Maigan A Brusko; Daniel J Perry; Wen-I Yeh; Brittney N Newby; Michael J Haller; Andrew B Muir; Mark A Atkinson; Clayton E Mathews; Todd M Brusko Journal: J Autoimmun Date: 2020-02-06 Impact factor: 7.094
Authors: Roswith Roth; Kristian Lynch; Heikki Hyöty; Maria Lönnrot; Kimberly A Driscoll; Suzanne Bennett Johnson Journal: Stress Health Date: 2019-04-04 Impact factor: 3.454
Authors: Virginie S E Jean-Baptiste; Chang-Qing Xia; Michael J Clare-Salzler; Marc S Horwitz Journal: EBioMedicine Date: 2017-06-21 Impact factor: 8.143
Authors: Anne-Louise Ponsonby; Angela Pezic; Fergus J Cameron; Christine Rodda; Andrew S Kemp; John B Carlin; Heikki Hyoty; Amirbabak Sioofy-Khojine; Terence Dwyer; Justine A Ellis; Maria E Craig Journal: PLoS One Date: 2018-04-17 Impact factor: 3.240