dc.contributor.author |
Kang, Dali |
|
dc.contributor.author |
Waldvogel, Henry J |
|
dc.contributor.author |
Wang, Ao |
|
dc.contributor.author |
Fan, Dawei |
|
dc.contributor.author |
Faull, Richard LM |
|
dc.contributor.author |
Curtis, Maurice A |
|
dc.contributor.author |
Shorten, Paul R |
|
dc.contributor.author |
Guan, Jian |
|
dc.coverage.spatial |
England |
|
dc.date.accessioned |
2021-09-21T22:17:10Z |
|
dc.date.available |
2021-09-21T22:17:10Z |
|
dc.date.issued |
2021-5 |
|
dc.identifier.issn |
0306-4530 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/56613 |
|
dc.description.abstract |
<h4>Background</h4>Insulin-like growth factor (IGF) binding protein (IGFBP)-3 and cyclic Glycine-Proline (cGP) regulate circulating IGF-1 function that is associated with cognition. The association between IGF-1 function and Alzheimer's disease (AD) remains inconclusive. This study evaluated the changes of IGFBPs and cGP, and their effects on the bioavailability and function of IGF-1 in human brain of AD cases.<h4>Methods</h4>Using biological and mathematic analysis we measured the concentrations of total, bound and unbound forms of IGF-1, IGFBPs and cGP in the inferior-frontal gyrus and middle-frontal gyrus of human AD (n = 15) and control cases (n = 15). The association between the changes of total concentration of these peptides and total protein concentration in brain tissues were also analyzed.<h4>Results</h4>The unbound bioavailable IGF-1 was lower whereas the bound cGP and IGFBP-3 were higher in AD than the control cases. Total protein that was lower in AD than control cases, was negatively associated with cGP concentration of control cases and with IGFBP-3 concentration of AD cases.<h4>Conclusions</h4>The results provide direct evidence for IGF-1 deficiency in AD brain due to lower bioavailable IGF-1. The increase of bound IGFBP-3 impaired autocrine regulation. The increase of bound cGP is an autocrine response to improve the bioavailability and function of IGF-1 in AD brain.<h4>Availability of data and material</h4>All data generated or analysed during this study are included in this published article. Additional datasets analysed during the current study available from the corresponding author on reasonable request. |
|
dc.format.medium |
Print-Electronic |
|
dc.language |
eng |
|
dc.publisher |
Elsevier BV |
|
dc.relation.ispartofseries |
Psychoneuroendocrinology |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.subject |
Alzheimer’s diseases (AD) |
|
dc.subject |
Autocrine regulation |
|
dc.subject |
Cyclic Glycine-Proline (cGP) |
|
dc.subject |
Human brains |
|
dc.subject |
IGF binding protein (IGFBP)s |
|
dc.subject |
Insulin-like growth factor-1 (IGF-1) |
|
dc.subject |
Science & Technology |
|
dc.subject |
Life Sciences & Biomedicine |
|
dc.subject |
Endocrinology & Metabolism |
|
dc.subject |
Neurosciences |
|
dc.subject |
Psychiatry |
|
dc.subject |
Neurosciences & Neurology |
|
dc.subject |
Autocrine regulation |
|
dc.subject |
Insulin-like growth factor-1 (IGF-1) |
|
dc.subject |
IGF binding protein (IGFBP)s |
|
dc.subject |
Cyclic Glycine-Proline (cGP) |
|
dc.subject |
Human brains |
|
dc.subject |
CYCLIC GLYCINE-PROLINE |
|
dc.subject |
IGF-I |
|
dc.subject |
BINDING |
|
dc.subject |
SIMULATION |
|
dc.subject |
TAU |
|
dc.subject |
11 Medical and Health Sciences |
|
dc.subject |
17 Psychology and Cognitive Sciences |
|
dc.title |
The autocrine regulation of insulin-like growth factor-1 in human brain of Alzheimer's disease. |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1016/j.psyneuen.2021.105191 |
|
pubs.begin-page |
105191 |
|
pubs.volume |
127 |
|
dc.date.updated |
2021-08-11T02:12:39Z |
|
dc.rights.holder |
Copyright: The author |
en |
pubs.author-url |
https://www.ncbi.nlm.nih.gov/pubmed/33706042 |
|
pubs.publication-status |
Published |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Journal Article |
|
pubs.elements-id |
844149 |
|
dc.identifier.eissn |
1873-3360 |
|
dc.identifier.pii |
S0306-4530(21)00065-2 |
|
pubs.number |
105191 |
|