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<p>Rotenone, often used to experimentally induce Parkinson's disease in rodents, is a well-known neurotoxic pesticide. One of the most common non-motor symptoms in Parkinson's patients is gastrointestinal dysfunction. Therefore, protecting the gastrointestinal system plays an important role in the onset and progression of the disease. In this study, both the effects of Rotenone on the stomach and small intestine and the possible protective role of Alpha Pinene against Rotenone toxicity, were investigated. Sixty adult male Sprague–Dawley rats were randomly divided into five groups as Control, Vehicle, Alpha Pinene (50&#xa0;mg/kg/day), Rotenone (2&#xa0;mg/kg/day) and Rotenone + Alpha Pinene. At the end of the 28-day experimental period, the stomach and jejunum tissues were examined using histological (haematoxylin–eosin and alcian blue-PAS stainings), biochemical (malondialdehyde, zonulin and Fatty Acid Binding Protein-2 levels) and molecular (Keap1, Nrf2 and HO-1 mRNA levels) techniques. While the data showed the presence of oxidative stress and impaired intestinal permeability in the stomach and jejunum tissues in the Rotenone group, these symptoms were observed to be alleviated in the Rotenone + Alpha Pinene group. This study reveals that Alpha Pinene may be a valuable herbal organic compound for the protection of the stomach and intestine and the reduction of complaints in diseases affecting the gastrointestinal system such as Parkinson's disease.</p> Graphical Abstract <p></p>

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Alpha Pinene Affects Intestinal Permeability and Protects the Gastrointestinal System Against Rotenone Toxicity via the Keap1/Nrf2 Pathway in Rats

  • 期刊论文

  • 发表日期：

    2025年7月28日

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  • Berna Tezcan Yavuz,
  • Emel Kabartan Cokeli,
  • Cansin Sirin Tomruk,
  • Gulay Hacioglu,
  • Selma Cirrik,
  • Canberk Tomruk

摘要

Rotenone, often used to experimentally induce Parkinson's disease in rodents, is a well-known neurotoxic pesticide. One of the most common non-motor symptoms in Parkinson's patients is gastrointestinal dysfunction. Therefore, protecting the gastrointestinal system plays an important role in the onset and progression of the disease. In this study, both the effects of Rotenone on the stomach and small intestine and the possible protective role of Alpha Pinene against Rotenone toxicity, were investigated. Sixty adult male Sprague–Dawley rats were randomly divided into five groups as Control, Vehicle, Alpha Pinene (50 mg/kg/day), Rotenone (2 mg/kg/day) and Rotenone + Alpha Pinene. At the end of the 28-day experimental period, the stomach and jejunum tissues were examined using histological (haematoxylin–eosin and alcian blue-PAS stainings), biochemical (malondialdehyde, zonulin and Fatty Acid Binding Protein-2 levels) and molecular (Keap1, Nrf2 and HO-1 mRNA levels) techniques. While the data showed the presence of oxidative stress and impaired intestinal permeability in the stomach and jejunum tissues in the Rotenone group, these symptoms were observed to be alleviated in the Rotenone + Alpha Pinene group. This study reveals that Alpha Pinene may be a valuable herbal organic compound for the protection of the stomach and intestine and the reduction of complaints in diseases affecting the gastrointestinal system such as Parkinson's disease.

Graphical Abstract