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  1. Article ; Online: Effects of the angiotensin-converting enzyme inhibitor captopril on occlusal-disharmony-induced cardiac dysfunction in mice.

    Ito, Aiko / Ohnuki, Yoshiki / Suita, Kenji / Matsuo, Ichiro / Ishikawa, Misao / Mitsubayashi, Takao / Mototani, Yasumasa / Kiyomoto, Kenichi / Tsunoda, Michinori / Morii, Akinaka / Nariyama, Megumi / Hayakawa, Yoshio / Tomonari, Hiroshi / Okumura, Satoshi

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 19927

    Abstract: Occlusal disharmony is known to affect not only the oral cavity environment, but also the autonomic nervous system in the heart. Since the renin-angiotensin system (RAS) inhibitor captopril (Cap) is one of the first-line drugs for preventing cardiac ... ...

    Abstract Occlusal disharmony is known to affect not only the oral cavity environment, but also the autonomic nervous system in the heart. Since the renin-angiotensin system (RAS) inhibitor captopril (Cap) is one of the first-line drugs for preventing cardiac remodeling in patients with heart failure, we hypothesized that Cap might prevent cardiac dysfunction induced by occlusal disharmony. Here, to test this idea, we used our bite-opening (BO) mouse model, which was developed by cementing a suitable appliance onto the mandibular incisor. Mice were divided into four groups: (1) Control, (2) BO, (3) Cap, and (4) BO + Cap. After 2 weeks, we evaluated cardiac function by echocardiography and confirmed that cardiac function was significantly decreased in the BO group compared to the control, while Cap ameliorated the dysfunction. Cardiac fibrosis, myocyte apoptosis and oxidative stress-induced myocardial damage in the BO group were significantly increased versus the control, and these increases were suppressed by Cap. Cardiac dysfunction induced by BO was associated with dual phosphorylation on PKCδ (Tyr-311/Thr-505), leading to activation of CaMKII with increased phosphorylation of RyR2 and phospholamban. Our results suggest that the RAS might play an important role in the development of cardiac diseases induced by occlusal anomalies.
    MeSH term(s) Humans ; Mice ; Animals ; Angiotensin-Converting Enzyme Inhibitors/pharmacology ; Captopril/pharmacology ; Heart ; Myocardium ; Heart Failure ; Enzyme Inhibitors
    Chemical Substances Angiotensin-Converting Enzyme Inhibitors ; Captopril (9G64RSX1XD) ; Enzyme Inhibitors
    Language English
    Publishing date 2023-11-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-43099-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Vidarabine, an anti-herpes agent, improves Porphyromonas gingivalis lipopolysaccharide-induced cardiac dysfunction in mice.

    Tsunoda, Michinori / Matsuo, Ichiro / Ohnuki, Yoshiki / Suita, Kenji / Ishikawa, Misao / Mitsubayashi, Takao / Ito, Aiko / Mototani, Yasumasa / Kiyomoto, Kenichi / Morii, Akinaka / Nariyama, Megumi / Hayakawa, Yoshio / Gomi, Kazuhiro / Okumura, Satoshi

    The journal of physiological sciences : JPS

    2023  Volume 73, Issue 1, Page(s) 18

    Abstract: In this work, we examined the involvement of type 5 adenylyl cyclase (AC5) in cardiac dysfunction induced in mice given Porphyromonas gingivalis lipopolysaccharide (PG-LPS) at a dose equivalent to the circulating levels in periodontitis (PD) patients. ... ...

    Abstract In this work, we examined the involvement of type 5 adenylyl cyclase (AC5) in cardiac dysfunction induced in mice given Porphyromonas gingivalis lipopolysaccharide (PG-LPS) at a dose equivalent to the circulating levels in periodontitis (PD) patients. Cardiac function was significantly decreased in mice given PG-LPS compared to the control, but treatment for 1 week with the AC5 inhibitor vidarabine ameliorated the dysfunction. Cardiac fibrosis and myocyte apoptosis were significantly increased in the PG-LPS group, but vidarabine blocked these changes. The PG-LPS-induced cardiac dysfunction was associated with activation of cyclic AMP/Ca
    MeSH term(s) Mice ; Animals ; Vidarabine ; Lipopolysaccharides/toxicity ; Porphyromonas gingivalis ; Heart ; Cardiomyopathies
    Chemical Substances Vidarabine (FA2DM6879K) ; Lipopolysaccharides
    Language English
    Publishing date 2023-08-09
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2234472-X
    ISSN 1880-6562 ; 1880-6546
    ISSN (online) 1880-6562
    ISSN 1880-6546
    DOI 10.1186/s12576-023-00873-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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