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Beta cell function in participants with single or multiple islet autoantibodies at baseline in the TEDDY Family Prevention Study : TEFA

Martinez, Maria Månsson LU ; Salami, Falastin LU ; Larsson, Helena Elding LU ; Toppari, Jorma ; Lernmark, Åke LU orcid ; Kero, Jukka LU ; Veijola, Riitta LU ; Koskenniemi, Jaakko J ; Tossavainen, Päivi LU and Lundgren, Markus LU , et al. (2021) In Endocrinology, Diabetes & Metabolism 4(2).
Abstract

Aim: The aim of the present study was to assess beta cell function based on an oral glucose tolerance test (OGTT) in participants with single islet autoantibody or an intravenous glucose tolerance test (IvGTT) in participants with multiple islet autoantibodies. Materials and methods: Healthy participants in Sweden and Finland, between 2 and 49.99 years of age previously identified as positive for a single (n = 30) autoantibody to either insulin, glutamic acid decarboxylase, islet antigen-2, zinc transporter 8 or islet cell antibodies or multiple autoantibodies (n = 46), were included. Participants positive for a single autoantibody underwent a 6-point OGTT while participants positive for multiple autoantibodies underwent an IvGTT.... (More)

Aim: The aim of the present study was to assess beta cell function based on an oral glucose tolerance test (OGTT) in participants with single islet autoantibody or an intravenous glucose tolerance test (IvGTT) in participants with multiple islet autoantibodies. Materials and methods: Healthy participants in Sweden and Finland, between 2 and 49.99 years of age previously identified as positive for a single (n = 30) autoantibody to either insulin, glutamic acid decarboxylase, islet antigen-2, zinc transporter 8 or islet cell antibodies or multiple autoantibodies (n = 46), were included. Participants positive for a single autoantibody underwent a 6-point OGTT while participants positive for multiple autoantibodies underwent an IvGTT. Glucose, insulin and C-peptide were measured from OGTT and IvGTT samples. Results: All participants positive for a single autoantibody had a normal glucose tolerance test with 120 minutes glucose below 7.70 mmol/L and HbA1c values within the normal range (<42 mmol/mol). Insulin responses to the glucose challenge on OGTT ranged between 13.0 and 143 mIU/L after 120 minutes with C-peptide values between 0.74 and 4.60 nmol/L. In Swedish participants, the first-phase insulin response (FPIR) on IvGTT was lower in those positive for three or more autoantibodies (n = 13; median 83.0 mIU/L; range 20.0-343) compared to those with two autoantibodies (n = 15; median 146 mIU/L; range 19.0-545; P =.0330). Conclusion: Participants positive for a single autoantibody appeared to have a normal beta cell function. Participants positive for three or more autoantibodies had a lower FPIR as compared to participants with two autoantibodies, supporting the view that their beta cell function had deteriorated.

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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
HbA1c, intravenous glucose tolerance test, oral glucose tolerance test
in
Endocrinology, Diabetes & Metabolism
volume
4
issue
2
article number
e00198
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85103914960
  • pmid:33855205
ISSN
2398-9238
DOI
10.1002/edm2.198
language
English
LU publication?
yes
id
e8783b91-f497-4f3d-9c5b-f1e11eaab610
date added to LUP
2021-03-09 16:43:11
date last changed
2022-04-27 00:43:18
@article{e8783b91-f497-4f3d-9c5b-f1e11eaab610,
  abstract     = {{<p>Aim: The aim of the present study was to assess beta cell function based on an oral glucose tolerance test (OGTT) in participants with single islet autoantibody or an intravenous glucose tolerance test (IvGTT) in participants with multiple islet autoantibodies. Materials and methods: Healthy participants in Sweden and Finland, between 2 and 49.99 years of age previously identified as positive for a single (n = 30) autoantibody to either insulin, glutamic acid decarboxylase, islet antigen-2, zinc transporter 8 or islet cell antibodies or multiple autoantibodies (n = 46), were included. Participants positive for a single autoantibody underwent a 6-point OGTT while participants positive for multiple autoantibodies underwent an IvGTT. Glucose, insulin and C-peptide were measured from OGTT and IvGTT samples. Results: All participants positive for a single autoantibody had a normal glucose tolerance test with 120 minutes glucose below 7.70 mmol/L and HbA1c values within the normal range (&lt;42 mmol/mol). Insulin responses to the glucose challenge on OGTT ranged between 13.0 and 143 mIU/L after 120 minutes with C-peptide values between 0.74 and 4.60 nmol/L. In Swedish participants, the first-phase insulin response (FPIR) on IvGTT was lower in those positive for three or more autoantibodies (n = 13; median 83.0 mIU/L; range 20.0-343) compared to those with two autoantibodies (n = 15; median 146 mIU/L; range 19.0-545; P =.0330). Conclusion: Participants positive for a single autoantibody appeared to have a normal beta cell function. Participants positive for three or more autoantibodies had a lower FPIR as compared to participants with two autoantibodies, supporting the view that their beta cell function had deteriorated.</p>}},
  author       = {{Martinez, Maria Månsson and Salami, Falastin and Larsson, Helena Elding and Toppari, Jorma and Lernmark, Åke and Kero, Jukka and Veijola, Riitta and Koskenniemi, Jaakko J and Tossavainen, Päivi and Lundgren, Markus and Borg, Henrik and Katsarou, Anastasia and Maziarz, Marlena and Törn, Carina}},
  issn         = {{2398-9238}},
  keywords     = {{HbA1c; intravenous glucose tolerance test; oral glucose tolerance test}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Endocrinology, Diabetes & Metabolism}},
  title        = {{Beta cell function in participants with single or multiple islet autoantibodies at baseline in the TEDDY Family Prevention Study : TEFA}},
  url          = {{http://dx.doi.org/10.1002/edm2.198}},
  doi          = {{10.1002/edm2.198}},
  volume       = {{4}},
  year         = {{2021}},
}