Probiotic-fermented purple sweet potato yogurt activates compensatory IGF‑IR/PI3K/Akt survival pathways and attenuates cardiac apoptosis in the hearts of spontaneously hypertensive rats

  • Authors:
    • Pei-Pei Lin
    • You-Miin Hsieh
    • Wei-Wen Kuo
    • Yueh-Min Lin
    • Yu-Lan Yeh
    • Chien-Chung Lin
    • Fuu-Jen Tsai
    • Chang-Hai Tsai
    • Chih-Yang Huang
    • Cheng-Chih Tsai
  • View Affiliations

  • Published online on: October 11, 2013     https://doi.org/10.3892/ijmm.2013.1524
  • Pages: 1319-1328
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Abstract

Apoptosis is recognized as a predictor of adverse outcomes in subjects with cardiac diseases. The aim of this study was to explore the effects of probiotic-fermented purple sweet potato yogurt (PSPY) with high γ-aminobutyric acid (GABA) content on cardiac apoptosis in spontaneously hypertensive rat (SHR) hearts. The rats were orally adminsitered with 2 different concentrations of PSPY (10 and 100%) or captopril, 15.6 mg/kg, body weight (BW)/day. The control group was administered distilled water. DAPI and TUNEL staining were used to detect the numbers of apoptotic cells. A decrease in the number of TUNEL-positive cardiac myocytes was observed in the SHR-PSPY (10 and 100%) groups. In addition, the levels of key components of the Fas receptor- and mitochondrial-dependent apoptotic pathways were determined by western blot analysis. The results revealed that the levels of the key components of the Fas receptor- and mitochondrial-dependent apoptotic pathway were significantly decreased in the SHR-captopril, and 10 and 100% PSPY groups. Additionally, the levels of phosphorylated insulin-like growth factor‑I receptor (p-IGF‑IR) were increased in SHR hearts from the SHR-control group; however, no recovery in the levels of downstream signaling components was observed. In addition, the levels of components of the compensatory IGF-IR-dependent survival pathway (p-PI3K and p-Akt) were all highly enhanced in the left ventricles in the hearts form the SHR-10 and 100% PSPY groups. Therefore, the oral administration of PSPY may attenuate cardiomyocyte apoptosis in SHR hearts by activating IGF‑IR-dependent survival signaling pathways.
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December 2013
Volume 32 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Lin P, Hsieh Y, Kuo W, Lin Y, Yeh Y, Lin C, Tsai F, Tsai C, Huang C, Tsai C, Tsai C, et al: Probiotic-fermented purple sweet potato yogurt activates compensatory IGF‑IR/PI3K/Akt survival pathways and attenuates cardiac apoptosis in the hearts of spontaneously hypertensive rats. Int J Mol Med 32: 1319-1328, 2013
APA
Lin, P., Hsieh, Y., Kuo, W., Lin, Y., Yeh, Y., Lin, C. ... Tsai, C. (2013). Probiotic-fermented purple sweet potato yogurt activates compensatory IGF‑IR/PI3K/Akt survival pathways and attenuates cardiac apoptosis in the hearts of spontaneously hypertensive rats. International Journal of Molecular Medicine, 32, 1319-1328. https://doi.org/10.3892/ijmm.2013.1524
MLA
Lin, P., Hsieh, Y., Kuo, W., Lin, Y., Yeh, Y., Lin, C., Tsai, F., Tsai, C., Huang, C., Tsai, C."Probiotic-fermented purple sweet potato yogurt activates compensatory IGF‑IR/PI3K/Akt survival pathways and attenuates cardiac apoptosis in the hearts of spontaneously hypertensive rats". International Journal of Molecular Medicine 32.6 (2013): 1319-1328.
Chicago
Lin, P., Hsieh, Y., Kuo, W., Lin, Y., Yeh, Y., Lin, C., Tsai, F., Tsai, C., Huang, C., Tsai, C."Probiotic-fermented purple sweet potato yogurt activates compensatory IGF‑IR/PI3K/Akt survival pathways and attenuates cardiac apoptosis in the hearts of spontaneously hypertensive rats". International Journal of Molecular Medicine 32, no. 6 (2013): 1319-1328. https://doi.org/10.3892/ijmm.2013.1524