Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Impact of lifestyle intervention on vitamin D, Adiponectin, Insulin-like growth factor 1 and Proneurotensin in overweight individuals from the Middle East

Dhaher, Nadine Fadhel LU ; Brismar, Kerstin ; Pikkemaat, Miriam LU orcid ; Shaat, Nael LU orcid ; Nilsson, Anton LU and Bennet, Louise LU orcid (2024) In Primary Care Diabetes 18(6). p.676-682
Abstract

Background: Immigrants from the Middle East (ME) have a higher prevalence of type 2 diabetes (T2D) compared to the native-born Swedish population. In individuals free from T2D, ME immigrants are more insulin resistant and have lower levels of adjusted insulin secretion (Disposition index, DIo) compared to Swedish-born individuals. The ethnic differences are not fully explained by traditional risk factors. This has raised the question as to whether hormonal factors other than insulin are involved, contributing to higher T2D risk in ME immigrants. Aims: In ME immigrants at high risk of developing T2D, we aimed to study the effect of a randomized culturally adapted lifestyle intervention on the levels of Vitamin D (25(OH)D), insulin-like... (More)

Background: Immigrants from the Middle East (ME) have a higher prevalence of type 2 diabetes (T2D) compared to the native-born Swedish population. In individuals free from T2D, ME immigrants are more insulin resistant and have lower levels of adjusted insulin secretion (Disposition index, DIo) compared to Swedish-born individuals. The ethnic differences are not fully explained by traditional risk factors. This has raised the question as to whether hormonal factors other than insulin are involved, contributing to higher T2D risk in ME immigrants. Aims: In ME immigrants at high risk of developing T2D, we aimed to study the effect of a randomized culturally adapted lifestyle intervention on the levels of Vitamin D (25(OH)D), insulin-like growth factor 1 (IGF-1), Pro-neurotensin (Pro-NT) and Adiponectin. Furthermore, we aimed to study if the effect of the intervention was associated to these hormones, or if a direct effect of the intervention remained after accounting for these. Methods: In this culturally adapted randomized controlled trial of four months duration, eligible ME immigrants at high risk of developing T2D identified in the MEDIM cohort were invited to participate. The intervention group (N= 35) received a culturally adapted lifestyle intervention program consisting of seven group sessions and cooking classes. The control group (N= 32) were given treatment as usual with oral and written information to improve their lifestyle habits. Using mixed models’ linear regression analysis, the changes in the levels of 25(OH)D, IGF-1, Adiponectin and Pro-NT were assessed by comparing the groups and we further studied the effects of the changes on insulin action and secretion. Results: The adjusted levels of 25(OH)D significantly increased in the intervention group compared to the control group (β for the effect of the intervention on 25(OH)D: 0.061, 95 % CI 0.009–0.113, P = 0.023). The increase in insulin sensitivity index (ISI) observed in the intervention compared to the control group was altered after adjusting for 25(OH)D: 0.129, 95 % CI −0.016–0.274, P = 0.078). IGF-1, Adiponectin and Pro-NT did not significantly influence the change over time concerning insulin secretion. Conclusion: Lifestyle intervention increases the adjusted levels of 25(OH)D. Moreover, the effect of the lifestyle intervention on insulin action and secretion was altered when adjusting for 25(OH)D.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
25(OH)D, Adiponectin, IGF-1, Immigrants, Insulin action, Insulin secretion, Pro-NT, T2D
in
Primary Care Diabetes
volume
18
issue
6
pages
676 - 682
publisher
Elsevier
external identifiers
  • pmid:39448331
  • scopus:85207264135
ISSN
1751-9918
DOI
10.1016/j.pcd.2024.10.006
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2024 The Authors
id
83b3e691-6a03-411e-a7a8-5433af482ebf
date added to LUP
2024-11-17 06:49:33
date last changed
2025-06-30 01:47:33
@article{83b3e691-6a03-411e-a7a8-5433af482ebf,
  abstract     = {{<p>Background: Immigrants from the Middle East (ME) have a higher prevalence of type 2 diabetes (T2D) compared to the native-born Swedish population. In individuals free from T2D, ME immigrants are more insulin resistant and have lower levels of adjusted insulin secretion (Disposition index, DIo) compared to Swedish-born individuals. The ethnic differences are not fully explained by traditional risk factors. This has raised the question as to whether hormonal factors other than insulin are involved, contributing to higher T2D risk in ME immigrants. Aims: In ME immigrants at high risk of developing T2D, we aimed to study the effect of a randomized culturally adapted lifestyle intervention on the levels of Vitamin D (25(OH)D), insulin-like growth factor 1 (IGF-1), Pro-neurotensin (Pro-NT) and Adiponectin. Furthermore, we aimed to study if the effect of the intervention was associated to these hormones, or if a direct effect of the intervention remained after accounting for these. Methods: In this culturally adapted randomized controlled trial of four months duration, eligible ME immigrants at high risk of developing T2D identified in the MEDIM cohort were invited to participate. The intervention group (N= 35) received a culturally adapted lifestyle intervention program consisting of seven group sessions and cooking classes. The control group (N= 32) were given treatment as usual with oral and written information to improve their lifestyle habits. Using mixed models’ linear regression analysis, the changes in the levels of 25(OH)D, IGF-1, Adiponectin and Pro-NT were assessed by comparing the groups and we further studied the effects of the changes on insulin action and secretion. Results: The adjusted levels of 25(OH)D significantly increased in the intervention group compared to the control group (β for the effect of the intervention on 25(OH)D: 0.061, 95 % CI 0.009–0.113, P = 0.023). The increase in insulin sensitivity index (ISI) observed in the intervention compared to the control group was altered after adjusting for 25(OH)D: 0.129, 95 % CI −0.016–0.274, P = 0.078). IGF-1, Adiponectin and Pro-NT did not significantly influence the change over time concerning insulin secretion. Conclusion: Lifestyle intervention increases the adjusted levels of 25(OH)D. Moreover, the effect of the lifestyle intervention on insulin action and secretion was altered when adjusting for 25(OH)D.</p>}},
  author       = {{Dhaher, Nadine Fadhel and Brismar, Kerstin and Pikkemaat, Miriam and Shaat, Nael and Nilsson, Anton and Bennet, Louise}},
  issn         = {{1751-9918}},
  keywords     = {{25(OH)D; Adiponectin; IGF-1; Immigrants; Insulin action; Insulin secretion; Pro-NT; T2D}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{676--682}},
  publisher    = {{Elsevier}},
  series       = {{Primary Care Diabetes}},
  title        = {{Impact of lifestyle intervention on vitamin D, Adiponectin, Insulin-like growth factor 1 and Proneurotensin in overweight individuals from the Middle East}},
  url          = {{http://dx.doi.org/10.1016/j.pcd.2024.10.006}},
  doi          = {{10.1016/j.pcd.2024.10.006}},
  volume       = {{18}},
  year         = {{2024}},
}