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Anti-stress effects of human placenta extract: possible involvement of the oxidative stress system i

Discussion in 'Latest ME/CFS Research' started by Murph, May 10, 2018.

  1. Murph

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    Anti-stress effects of human placenta extract: possible involvement of the oxidative stress system in rats.
    Park HJ1,2, Shim HS1, Lee S1, Hahm DH1,3, Lee H1, Oh CT4, Han HJ4, Ji HJ5, Shim I6,7.
    Author information
    1
    Department of Science in Korean Medicine, Graduate School, College of Korean Medicine, Kyung Hee University, Seoul, 02447, South Korea.
    2
    Department of Food Science & Biotechnology, College of Science and Engineering, Kyonggi University, Suwon, South Korea.
    3
    Department of Physiology, College of Medicine, Kyung Hee University, Seoul, South Korea.
    4
    Business Development Division, Green Cross WellBeing, Seongnam, Gyeonggi-Do, 13595, South Korea.
    5
    Corporate Development Division, Green Cross Corp, Yongin, Gyeonggi-Do, 16924, South Korea.
    6
    Department of Science in Korean Medicine, Graduate School, College of Korean Medicine, Kyung Hee University, Seoul, 02447, South Korea. ishim@khu.ac.kr.
    7
    Department of Physiology, College of Medicine, Kyung Hee University, Seoul, South Korea. ishim@khu.ac.kr.
    Abstract
    BACKGROUND:
    Human placenta hydrolysate (hPH) has been utilized to improve menopausal, fatigue, liver function. Its high concentration of bioactive substances is known to produce including antioxidant, anti-inflammatory and anti-nociceptive activities. However, its mechanisms of stress-induced depression remain unknown.

    METHODS:
    The present study examined the effect of hPH on stress-induced depressive behaviors and biochemical parameters in rats. hPH (0.02 ml, 0.2 ml or 1 ml/rat) was injected intravenously 30 min before the daily stress session in male Sprague-Dawley rats exposed to repeated immobilization stress (4 h/day for 7 days). The depressive-like behaviors of all groups were measured by elevated plus maze (EPM) and forced swimming test (FST). After the behavior tests, brain samples of all groups were collected for the analysis of glutathione peroxidase (GPx) and nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) staining.

    RESULTS:
    Treatment with hPH produced a significant decrease of immobility time in the FST compared to the controls. Additionally, hPH treatment elicited a slightly decreasing trend in anxiety behavior on the EPM. Furthermore, hPH increased the level of GPx protein in the hippocampus, and decreased the expression of NADPH-d in the paraventricular nucleus (PVN).

    CONCLUSION:
    This study demonstrated that hPH has anti-stress effects via the regulation of nitric oxide (NO) synthase and antioxidant activity in the brain. These results suggest that hPH may be useful in the treatment of stress-related diseases such as chronic fatigue syndrome.

    KEYWORDS:
    Fatigue; Forced swimming test; Glutathione peroxidase (GPx); Human placenta hydrolysate (hPH); Immobilization stress; Nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d)

    PMID:
    29739458
    DOI:
    10.1186/s12906-018-2193-x
     
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