| dc.creator |
Jones, Angus G. |
|
| dc.date |
2020-09-07T11:33:56Z |
|
| dc.date |
2020-09-07T11:33:56Z |
|
| dc.date |
2019-06 |
|
| dc.date.accessioned |
2023-02-17T19:47:59Z |
|
| dc.date.available |
2023-02-17T19:47:59Z |
|
| dc.identifier |
Dawed AY et al. Variation in the Plasma Membrane Monoamine Transporter (PMAT) (Encoded by SLC29A4) and Organic Cation Transporter 1 (OCT1) (Encoded by SLC22A1) and Gastrointestinal Intolerance to Metformin in Type 2 Diabetes: An IMI DIRECT Study. Diabetes Care. 2019;42(6):1027-1033. doi:10.2337/dc18-2182 Epub 2019 Mar 18. |
|
| dc.identifier |
30885951 |
|
| dc.identifier |
10.2337/dc18-2182 |
|
| dc.identifier |
https://rde.dspace-express.com/handle/11287/621406 |
|
| dc.identifier |
Diabetes Care |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/241997 |
|
| dc.description |
Objective: Gastrointestinal adverse effects occur in 20-30% of patients with metformin-treated type 2 diabetes, leading to premature discontinuation in 5-10% of the cases. Gastrointestinal intolerance may reflect localized high concentrations of metformin in the gut. We hypothesized that reduced transport of metformin via the plasma membrane monoamine transporter (PMAT) and organic cation transporter 1 (OCT1) could increase the risk of severe gastrointestinal adverse effects.
Research design and methods: The study included 286 severe metformin-intolerant and 1,128 metformin-tolerant individuals from the IMI DIRECT (Innovative Medicines Initiative: DIabetes REsearCh on patient straTification) consortium. We assessed the association of patient characteristics, concomitant medication, and the burden of mutations in the SLC29A4 and SLC22A1 genes on odds of intolerance.
Results: Women (P < 0.001) and older people (P < 0.001) were more likely to develop metformin intolerance. Concomitant use of transporter-inhibiting drugs increased the odds of intolerance (odds ratio [OR] 1.72, P < 0.001). In an adjusted logistic regression model, the G allele at rs3889348 (SLC29A4) was associated with gastrointestinal intolerance (OR 1.34, P = 0.005). rs3889348 is the top cis-expression quantitative trait locus for SLC29A4 in gut tissue where carriers of the G allele had reduced expression. Homozygous carriers of the G allele treated with transporter-inhibiting drugs had more than three times higher odds of intolerance compared with carriers of no G allele and not treated with inhibiting drugs (OR 3.23, P < 0.001). Use of a genetic risk score derived from rs3889348 and SLC22A1 variants found that the odds of intolerance were more than twice as high in individuals who carry three or more risk alleles compared with those carrying none (OR 2.15, P = 0.01).
Conclusions: These results suggest that intestinal metformin transporters and concomitant medications play an important role in the gastrointestinal adverse effects of metformin. |
|
| dc.description |
This article is freely available via Open Access. Click on the Publisher URL to access it via the publisher's site. |
|
| dc.description |
The work leading to this publication
has received support from the Innovative Medicines Initiative Joint Undertaking under grant
agreement no. 115317 (DIRECT), resources of
which are composed of financial contribution
from the European Union’s Seventh Framework
Programme (FP7/2007-2013) and an in-kind
contribution from the European Federation of
Pharmaceutical Industries and Associations.
E.R.P. holds a Wellcome Trust New Investigator
Award (102820/Z/13/Z). |
|
| dc.description |
published version, accepted version, submitted version |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
the American Diabetes Association |
|
| dc.relation |
http://care.diabetesjournals.org/cgi/pmidlookup?view=long&pmid=30885951 |
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| dc.rights |
© 2019 by the American Diabetes Association.
Readers may use this article as long as the work is
properly cited, the use is educational and not for
profit, and the work is not altered. More information is available at http://www.diabetesjournals
.org/content/license. |
|
| dc.rights |
CC0 1.0 Universal |
|
| dc.rights |
http://creativecommons.org/publicdomain/zero/1.0/ |
|
| dc.subject |
Type 2 Diabetes |
|
| dc.subject |
Plasma Membrane Monoamine Transporter (PMAT) |
|
| dc.subject |
Organic Cation Transporter 1 (OCT1) |
|
| dc.subject |
Gastrointestinal Intolerance |
|
| dc.subject |
Wessex Classification Subject Headings::Endocrinology::Diabetes |
|
| dc.title |
Variation in the Plasma Membrane Monoamine Transporter (PMAT) (Encoded by SLC29A4) and Organic Cation Transporter 1 (OCT1) (Encoded by SLC22A1) and Gastrointestinal Intolerance to Metformin in Type 2 Diabetes: An IMI DIRECT Study |
|
| dc.type |
Journal Article |
|
| dc.type |
Published |
|