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Accessible Unlicensed Requires Authentication Published by De Gruyter February 7, 2020

Decreasing angiogenesis vasa vasorum through Lp-PLA2 and H2O2 inhibition by PSP from Ganoderma lucidum in atherosclerosis: in vivo diabetes mellitus type 2

Titin Andri Wihastuti ORCID logo, Reyhan Amiruddin, Fibe Yulinda Cesa, Amalia Istiqamah Alkaf, Meddy Setiawan and Teuku Heriansyah

Abstract

Background

Type 2 diabetes mellitus (T2DM) is a major risk factor of atherosclerosis. Hyperglycemia in T2DM causes advanced formation of glycation end products (AGE) which leads to oxidative stress and chronic inflammation. Oxidative stress occurs due to increased levels of reactive oxygen species (ROS) such as H2O2. On the other hand, lipoprotein-associated phospholipase (Lp-PLA2) has pro-inflammatory effects, which cause instability of atherosclerosis plaques. This condition causes hypoxemic cells to stimulate HIFα induced vasa vasorum angiogenesis. This study aims to understand the potential of PSP as an anti-angiogenic agent through decreased levels of H2O2 and Lp-PLA2 leading to the decline of vasa vasorum angiogenesis in diabetic rat model. In addition, this study also measured the lipid profile of diabetic rat model in relation to vasa vasorum angiogenesis.

Methods

True laboratory experiment with randomized post-test control of group design using 25 wistar rats (Rattus norvegicus) were divided into five groups; one normal group and four group with High Fat Diet (HFD) and low dose streptozotocin (30 mg/kgBW) injection sc, treated with placebo and three various doses of PSP 50, 150, 300 mg/kgBW.

Results

ANOVA test (p < 0.05) shows that there is a significant influence of polysaccharide peptide (PSP) feeding on the decreased amount of vasa vasorum angiogenesis (p = 0.00), lipid profile (cholesterol total and triglyceride; p = 0.01, p = 0.001), and amount of H202 (p = 0.003). The amount of Lp-PLA2 declined to (p = 0.184). This result indicates that PSP prevents inflammation in atherosclerosis.

Conclusions

PSP of Ganoderma lucidum is an anti-angiogenic agent in T2DM.

  1. Research funding: None declared.

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: Authors state no conflict of interest.

  4. Informed consent: Informed consent was obtained from all individuals included in this study.

  5. Ethical approval: This study has been evaluated and approved by the Ethical Committee of Indonesian Health Research for the care and use of animals. (267/EC/KEPK-S1-PD/07/2017)

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Received: 2019-11-18
Accepted: 2019-11-20
Published Online: 2020-02-07

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