Preventive effect of insect tea against reserpine‑induced gastric ulcers in mice

Zhou,Ya-Lin; Wang,Rui; Feng,Xia; Zhao,Xin

doi:10.3892/etm.2014.1859

Preventive effect of insect tea against reserpine‑induced gastric ulcers in mice

Authors:
- Ya-Lin Zhou
- Rui Wang
- Xia Feng
- Xin Zhao
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Affiliations: Department of Biological and Chemical Engineering, Chongqing University of Education, Nan'an, Chongqing 400067, P.R. China
Published online on: July 23, 2014 https://doi.org/10.3892/etm.2014.1859
Pages: 1318-1324

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Abstract

The aim of the present study was to determine the preventive effect of insect tea against reserpine‑induced gastric ulcers in ICR mice. A high (800 mg/kg) dose of insect tea reduced the serum levels of the proinflammatory cytokines interleukin (IL)‑6, IL‑12, tumor necrosis factor (TNF)‑α and interferon (IFN)‑γ compared with those in mice treated with a low (400 mg/kg) dose and the control mice. The serum levels of somatostatin (SS) and vasoactive intestinal peptide (VIP) in mice treated with insect tea were higher compared with those in the control mice; however, the serum levels of motilin (MOT) and substance P (SP) were lower in mice treated with insect tea than in the control mice. Gastric ulcer inhibitory rate of the insect tea treatment group of mice were much lower compared to the control mice, and the high concentration treated mice were similar to the ranitidine treated mice. The activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH‑Px) in mice treated with insect tea were higher compared with those in control mice, and similar to those in normal mice and ranitidine‑treated mice. The nitric oxide (NO) and maleic dialdehyde (MDA) levels of mice treated with a high concentration of insect tea compared with the normal group were close. Using quantitative polymerase chain reaction (qPCR) assays, the present study revealed that insect tea significantly induced inflammation in the tissues of mice by downregulating the expression of nuclear factor κ-light-chain-enhancer of activated B cells (NF‑κB), inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)‑2, and upregulating the expression of nuclear factor of κ light polypeptide gene enhancer in B-cells inhibitor α (IκB‑α). These results suggest that insect tea is as effective at preventing gastric ulcers as the gastric ulcer drug, ranitidine and it can be used as medicine.

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