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  • Title: Propagermanium as a Novel Therapeutic Approach for the Treatment of Endothelial Dysfunction in Type 2 Diabetes.
    Author: Azul L, Leandro A, Seiça R, Sena CM.
    Journal: Int J Mol Sci; 2024 Jul 30; 25(15):. PubMed ID: 39125901.
    Abstract:
    Propagermanium (PG) has immune modulating activity and anti-inflammatory properties. This work aimed to study the therapeutic efficacy of PG on endothelial and perivascular dysfunction associated with type 2 diabetes. Non-obese type 2 diabetic Goto-Kakizaki (GK) rats were divided into four groups: (1) the control group; (2) the group treated with 50 mg/kg PG; (3) the group fed a high-fat diet (GKHFD); and (4) the group of GKHFD treated with 50 mg/kg PG. PG was given orally for 3 months. Several in vivo parameters and endothelial function were studied in aortas with perivascular adipose tissue PVAT (+) or without PVAT (-). We also determined the vascular inflammation and levels of CD36 in PVAT. In diabetic GK rats, PG did not affect the lipid profile or the results of the intraperitoneal glucose tolerance test. Instead, it improved the fasting glucose levels (18%, p < 0.01), insulin resistance (32%, p < 0.05), endothelial function (33 and 25% in aortas mounted with (+) or without PVAT (-), p < 0.05), and restored the anticontractile effect of the perivascular adipose tissue by reducing its inflammation (56%, p < 0.05) and oxidative stress profile (55%, p < 0.05). Due to its anti-inflammatory characteristics, PG likely improved endothelial dysfunction and restored the perivascular adipose tissue's anticontractile properties.
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