Highlighting the effects of high-intensity interval training on the changes associated with hypertrophy, apoptosis, and histological proteins of the heart of old rats with type 2 diabetes

© 2024. The Author(s)..

T2DM is known to cause disturbances in glucose homeostasis and negative changes in the heart muscle, while aging and diabetes are recognized risk factors for CVD. Given this, our study aims to investigate a method for controlling and managing CVDs induced by T2DM in elderly populations. To achieve this, we categorized 40 rats into 5 groups, including HAD (n = 8), HA (n = 8), AD (n = 8), AHT (n = 8), and ADT (n = 8). The exercise protocol consisted of eight weeks of HIIT (three sessions per week) performed at 90-95% of maximal speed. Following cardiac tissue extraction, we assessed the levels of IGF-1, PI3K, and AKT proteins using Western blot technique, and analyzed the histopathological variations of the heart tissue using H&E, Sudan Black, and Masson's trichrome tissue staining. The histological findings from our study demonstrated that T2DM had a significant impact on the development of pathological hypertrophy and fibrosis in the heart tissue of elderly individuals. However, HIIT not only effectively controlled pathological hypertrophy and fibrosis, but also induced physiological hypertrophy in the AHT and ADT groups compared to the HA and AD groups. Results from Sudan Black staining indicated that there was an increase in lipid droplet accumulation in the cytoplasm of cardiomyocytes and their nuclei in the HA and AD groups, while the accumulation of lipid droplets decreased significantly in the AHT and ADT groups. In both the AHT group and the ADT group, a single HIIT session led to a reduction in collagen fiber accumulation and fibrotic frameworks. Our research also revealed that diabetes caused a significant elevation in the levels of IGF-1, PI3K, and AKT proteins, but after eight weeks of HIIT, the levels of these proteins decreased significantly in the training groups. Overall, our findings suggest that HIIT may be a suitable non-pharmacological approach for improving histological and physiological changes in elderly individuals with T2DM. However, we recommend further research to examine the impact of HIIT training on both healthy and diseased elderly populations.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Scientific reports - 14(2024), 1 vom: 26. März, Seite 7133

Sprache:

Englisch

Beteiligte Personen:

Rami, Mohammad [VerfasserIn]
Ahmadi Hekmatikar, Amirhossein [VerfasserIn]
Rahdar, Samaneh [VerfasserIn]
Marashi, Sayed Shafa [VerfasserIn]
Daud, D Maryama Awang [VerfasserIn]

Links:

Volltext

Themen:

67763-96-6
Aging
Cardiovascular diseases
EC 2.7.1.-
EC 2.7.11.1
High-intensity interval training
Insulin-Like Growth Factor I
Journal Article
Phosphatidylinositol 3-Kinases
Proto-Oncogene Proteins c-akt
Type 2 diabetes mellitus

Anmerkungen:

Date Completed 28.03.2024

Date Revised 29.03.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41598-024-57119-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370214420