IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v20y2023i3p1893-d1041892.html
   My bibliography  Save this article

The Mechanism of Aerobic Exercise Regulating the PI3K/Akt-mTOR Signaling Pathway Intervenes in Hippocampal Neuronal Apoptosis in Vascular Dementia Rats

Author

Listed:
  • Lei Gao

    (Department of Physical Education, Yuzhang Normal University, Nanchang 330103, China)

  • Fushun Liu

    (Police Sports Department, Zhejiang Police College, Hangzhou 310053, China)

  • Ruilian Liu

    (College of Physical Education, Yichun University, Yichun 336000, China)

Abstract

Background: The purpose of this paper is to explore the mechanism of aerobic exercise regulating autophagy through the PI3K/Akt-mTOR signaling pathway and its participation in apoptosis, to protect the hippocampal nerves from damage in vascular dementia rats. Methods: Thirty-six healthy male SD rats were randomly divided into a sham group, a model group, and a model exercise group. A neurobehavioral assessment was used to determine the memory and exploration abilities of the rats. A TUNEL assay was used to detect hippocampal neuron apoptosis. Immunohistochemical and Western blot analyses were used to analyze LC3Ⅱ and the beclin-1 protein. An RT-PCR detected the differential expression of mRNA. Results: The results of the neurobehavioral tests showed that the platform latency time of the rats with vascular dementia was prolonged. Aerobic exercise significantly shortens the swimming time of rats in platform latency. The TUNEL results showed that the TUNEL-positive cells of the hippocampal neurons in the model group increased; the expression of pro-apoptotic genes caspase-3 and Bax mRNA was up-regulated, and the expression of Bcl-2 mRNA was down-regulated. Aerobic exercise reduced hippocampal neuronal apoptosis, up-regulated Bcl-2 mRNA, and down-regulated caspase-3 and Bax mRNA. The LC3Ⅱ and Beclin-1 proteins, detected by immunohistochemistry and a Western blot analysis, showed that the protein expression in the hippocampi of rats with vascular dementia increased. Aerobic exercise reduced LC3Ⅱ and Beclin-1 protein expression. The results of the RT-PCR showed similar changes. Conclusions: Aerobic exercise could improve the learning and memory abilities of vascular dementia rats, moderately regulate the process of autophagy, reduce the TUNEL-positive cells of hippocampal neurons, repair damaged hippocampal neurons by regulating the autophagy signaling pathway PI3K/Akt-mTOR, and improve hippocampal function.

Suggested Citation

  • Lei Gao & Fushun Liu & Ruilian Liu, 2023. "The Mechanism of Aerobic Exercise Regulating the PI3K/Akt-mTOR Signaling Pathway Intervenes in Hippocampal Neuronal Apoptosis in Vascular Dementia Rats," IJERPH, MDPI, vol. 20(3), pages 1-10, January.
  • Handle: RePEc:gam:jijerp:v:20:y:2023:i:3:p:1893-:d:1041892
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/20/3/1893/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1660-4601/20/3/1893/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Xiang Gui & Hui Yang & Tuo Li & Xiaojun Tan & Peiqing Shi & Minghao Li & Fenghe Du & Zhijian J. Chen, 2019. "Autophagy induction via STING trafficking is a primordial function of the cGAS pathway," Nature, Nature, vol. 567(7747), pages 262-266, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Daipayan Banerjee & Kurt Langberg & Salar Abbas & Eric Odermatt & Praveen Yerramothu & Martin Volaric & Matthew A. Reidenbach & Kathy J. Krentz & C. Dustin Rubinstein & David L. Brautigan & Tarek Abba, 2021. "A non-canonical, interferon-independent signaling activity of cGAMP triggers DNA damage response signaling," Nature Communications, Nature, vol. 12(1), pages 1-24, December.
    2. Annemarie Steiner & Katja Hrovat-Schaale & Ignazia Prigione & Chien-Hsiung Yu & Pawat Laohamonthonkul & Cassandra R. Harapas & Ronnie Ren Jie Low & Dominic Nardo & Laura F. Dagley & Michael J. Mlodzia, 2022. "Deficiency in coatomer complex I causes aberrant activation of STING signalling," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    3. Xintao Tu & Ting-Ting Chu & Devon Jeltema & Kennady Abbott & Kun Yang & Cong Xing & Jie Han & Nicole Dobbs & Nan Yan, 2022. "Interruption of post-Golgi STING trafficking activates tonic interferon signaling," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    4. Matteo Gentili & Bingxu Liu & Malvina Papanastasiou & Deborah Dele-Oni & Marc A. Schwartz & Rebecca J. Carlson & Aziz M. Al’Khafaji & Karsten Krug & Adam Brown & John G. Doench & Steven A. Carr & Nir , 2023. "ESCRT-dependent STING degradation inhibits steady-state and cGAMP-induced signalling," Nature Communications, Nature, vol. 14(1), pages 1-22, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:20:y:2023:i:3:p:1893-:d:1041892. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.