Evidence map›Paper›PMID 34480710›Full record

ArticleNeurochemical research2022

Liraglutide Alleviates Cognitive Deficit in db/db Mice: Involvement in Oxidative Stress, Iron Overload, and Ferroptosis.

Ji-Ren An, Jia-Nan Su, Gui-Yan Sun, Qing-Feng Wang, Ya-Dong Fan, Nan Jiang, Yu-Feng Yang, Yan Shi

Abstract read
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In one paragraph

Article in Neurochemical research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
9.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 95 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Ji-Ren AnLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China.
Jia-Nan SuLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China.
Gui-Yan SunLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China.
Qing-Feng WangLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China.
Ya-Dong FanTianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
Nan JiangLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China.
Yu-Feng YangLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China. lntcmyyf@126.com.
Yan ShiLiaoning University of Traditional Chinese Medicine, Huanggu District, No. 79, Mount Chong East Road, Shenyang, 110847, China. lntcmshiyan@163.com.
Liaoning University of Traditional Chinese Medicine · CNTianjin University of Traditional Chinese Medicine · CN

Funding

Liaoning University of Traditional Chinese Medicine Postdoctoral Research Fund 21601A2015liaoning xingliao talent plan project XLYC1807145national leading talents support program of chinese medicine- qihuang scholar [2018]12
6 · The paper itself

Abstract

Studies have shown that diabetes is associated with the occurrence of neurodegenerative diseases and cognitive decline. However, there is currently no effective treatment for diabetes-induced cognitive dysfunction. The superior efficacy of liraglutide (LIRA) for cognitive impairment and numerous neurodegenerative diseases has been widely demonstrated. This study determined the effects of LIRA on diabetic cognitive impairment and on the levels of oxidative stress, lipid peroxidation, iron metabolism and ferroptosis in the hippocampus. Mice were injected daily with liraglutide (200 μg/kg/d) for 5 weeks. LIRA could repair damaged neurons and synapses, and it increased the protein expression levels of PSD 95, SYN, and BDNF. Furthermore, LIRA significantly decreased oxidative stress and lipid peroxidation levels by downregulating the production of ROS and MDA and upregulating SOD and GSH-Px in the serum and hippocampus, and the upregulation of SOD2 expression was also proven. The decreased levels of TfR1 and the upregulation of FPN1 and FTH proteins observed in the LIRA-treated db/db group were shown to reduce iron overload in the hippocampus, whereas the increased expression of Mtft and decreased expression of Mfrn in the mitochondria indicated that mitochondrial iron overload was ameliorated. Finally, LIRA was shown to prevent ferroptosis in the hippocampus by elevating the expression of GPX4 and SLC7A11 and suppressing the excessive amount of ACSL4; simultaneously, the damage to the mitochondria observed by TEM was also repaired. For the first time, we proved in the T2DM model that ferroptosis occurs in the hippocampus, which may play a role in diabetic cognitive impairment. LIRA can reduce oxidative stress, lipid peroxidation and iron overload in diabetic cognitive disorders and further inhibit ferroptosis, thereby weakening the damage to hippocampal neurons and synaptic plasticity and ultimately restoring cognitive function.

Indexed as

Cognitive DysfunctionFerroptosisIron OverloadAnimalsCognitionLiraglutideMiceMice, Inbred StrainsOxidative StressLiraglutideDiabetic cognitive impairmentFerroptosisIron overloadLiraglutideOxidative stress

Identifiers

PMID34480710
OpenAlexW3196563535

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.