Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2019 / Cilt: 66 - Sayı: 2

The effect of olive leaf extract on digestive enzyme inhibition and insulin production in streptozotocin-induced diabetic rats

Streptozotosin ile indüklenmiş diyabetik sıçanlarda zeytin yaprağı ekstraktının sindirim enzimi inhibisyonuna ve insülin üretimine etkisi

Pages
163–169
Publication Date
2022-10-12
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

OLE could offer an additional beneficial effect for the treatment of diabetes.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Olive leaf has natural bioactive compounds, mainly oleuropein, that are widely considered to have potentially beneficial effects on health.
📊
Key Findings & Data:This study aimed to evaluate the effects of olive leaf extract (OLE) on the inhibition of carbohydrate digestive enzymes, and immunohistochemical study of insulin in the pancreas of in vivo streptozotocin-induced diabetic rats.
💡
Conclusion & Impact:OLE could offer an additional beneficial effect for the treatment of diabetes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Olive leaf has natural bioactive compounds, mainly oleuropein, that are widely considered to have potentially beneficial effects on health. This study aimed to evaluate the effects of olive leaf extract (OLE) on the inhibition of carbohydrate digestive enzymes, and immunohistochemical study of insulin in the pancreas of in vivo streptozotocin-induced diabetic rats. Blood glucose levels, insulin, glycated hemoglobin (HbA1c), α-amylase and α-glucosidase activities, and an immunohistochemical study were performed at the end of the experiment. In the OLE treated group, blood glucose levels and HbA1c significantly decreased while insulin levels increased. Besides this, OLE treated group showed remarkable inhibitory activities on α-amylase and α-glucosidase compared with the Acarbose treated group. It was observed that OLE exhibited partial positive immunoreaction for insulin in β-cells through immunohistochemical analysis. Considering that OLE is more tolerable for digestion system compared to acarbose, it may be a better fitoformulation for antidiabetic medications. OLE could offer an additional beneficial effect for the treatment of diabetes.

Özet

Zeytin yaprağı potansiyel olarak sağlık üzerine yararlı etkileri olduğu düşünülen başlıca oleuropein olmak üzere biyoaktif bileşenlere sahiptir. Bu çalışma, streptozotosin (STZ) ile indüklenmiş diyabetik sıçanlarda zetin yaprağı ekstraktının (OLE) in vivo karbonhidrat sindirim enzimleri inhibisyonunun ve pankreasta insülin mevcudiyetinin araştırılmasını amaçlamaktadır. Deney sonunda kan glukoz seviyeleri, insülin seviyeleri, glikozillenmiş hemoglobin (HbA1c), α-amilaz ve α-glukozidaz aktiviteleri analizi ile immunohistokimyasal çalışma yapıldı. OLE tedavi grubunda kan glukoz seviyeleri ve HbA1c anlamlı şekilde azalırken insülin seviyeleri arttı. Bunun yanında OLE, Akarboz grubuna göre dikkat çekici şekilde α-amilaz ve α-glukozidaz aktivitelerinde inhibitör etki gösterdi. Immunohistokimyasal analizde OLE’nin β-hücrelerinde insülin için kısmi pozitif immunoreaksiyon gösterdiği gözlendi. OLE akarboz ile karşılaştırıldığında sindirim sistemi bakımından daha tolere edilebilir olduğu düşünüldüğünde antidiyabetik ilaçlara göre daha iyi bir fitoformülasyon olabilir. OLE, diyabet tedavisi için ek bir faydalı etki sunabilir.

🔖

Cite This Article

TEMİZ, M. A., TEMUR, A. (2022). The effect of olive leaf extract on digestive enzyme inhibition and insulin production in streptozotocin-induced diabetic rats. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 66 - Sayı: 2, 163–169. https://ajindex.com/articles/444893

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. Ahmed ABA, Rao AS, Rao MV (2010): In vitro callus and in vivo leaf extract of Gymnema sylvestre stimulate β-cells regeneration and anti-diabetic activity in Wistar rats. Phytomedicine, 17, 1033-1039
  2. Alashkham FA, Osman MT, Adnan A, et al. (2013): Histopathological and biochemical effects of Allium Sativum oil administration on type 1 diabetic rats. Res J Pharm Biol Chem Sci, 4 (1), 1045-1053
  3. Al-Azzawie HF, Alhamdani MS (2006): Hypoglycemic and antioxidant effect of oleuropein in alloxan-diabetic rabbits. Life Sci, 78, 1371-1377. 4. de Bock M, Derraik JGB, Brennan JM, et al. (2013): Olive (Olea europaea L.) leaf polyphenols improve insulin sensitivity in middle-aged overweight men: a randomized, placebo-controlled, crossover trial. PLoS ONE, 8 (3), e57622
  4. Buchholz T, Melzig MF (2016): Medicinal plants traditionally used for treatment of obesity and diabetes mellitus – screening for pancreatic lipase and α-Amylase inhibition. Phytother Res, 30, 260-266
  5. Cardinali A, Cicco N, Linsalata V, et al. (2010): Biological activity of high molecular weight phenolics from olive mill wastewater. J Agr Food Chem, 58, 8585-8590
  6. Cheng AYY, Fantus IG (2005): Oral antihyperglycemic therapy for type 2 diabetes mellitus. Can Med Assoc J, 172 (2), 213-226
  7. Girija K, Lakshman K, Chandrika U, et al. (2011): Anti-diabetic and anti-cholesterolemic activity of methanol extracts of three species of Amaranthus. Asian Pac J Trop Biomed, 1 (2), 133-138
  8. Gonzalez M, Zarzuelo A, Gamez MJ, et al. (1992): Hypoglycemic activity of olive leaf. Planta Med, 58 (6), 513-515
  9. Guo S (2014): Insulin signaling, resistance, and metabolic syndrome: insights from mouse models into disease mechanisms. J Endocrinol, 220, T1-T23
  10. Harvey RA, Ferrier DR (2011): Lippincott’s Illustrated Reviews: Biochemistry
  11. In: RA Harvey (Ed), Integration of Metabolism: Diabetes Mellitus. 5th ed. Lippincott Williams & Wilkins, Hong Kong
  12. Jemai H, El Feki A, Sayadi S (2009): Antidiabetic and antioxidant effects of hydroxytyrosol and oleuropein from olive leaves in alloxan-diabetic rats. J Agr Food Chem, 57 (19), 8798-8804
  13. Kamalakkannan N, Prince PSM (2005): The effect of Aegle marmelos fruit extract in streptozotocin diabetes. J Herb Pharmacother, 5 (3), 87-96
  14. Kanter M, Uysal H, Karaca T, et al. (2006): Depression of glucose levels and partial restoration of pancreatic β-cell damage by melatonin in streptozotocin-induced diabetic rats. Arch Toxicol, 80, 362-369