Lin-Zi Li 1 , Shan-Shan Lei 1 , Bo Li 1 , Fu-Chen Zhou 1 , Ye-Hui Chen 1 , Jie Su 2 , Gui-Yuan Lv 2 , Su-Hong Chen 1 Show Affiliations »
Abstract
AIM AND OBJECTIVE: The Dendrobium officinalis flower (DOF) is popular in China due to common belief in its anti-aging properties and positive effects on "nourish yin". However, there have been relatively few confirmatory pharmacological experiments conducted to date. The aim of this work was to evaluate whether DOF has beneficial effects on learning and memory in senescent rats, and, if so, to determine its potential mechanism of effect. MATERIALS AND METHODS: SD rats were administrated orally DOF at a dose of 1.38, or 0.46 g/kg once a day for 8 weeks. Two other groups included a healthy untreated control group and a senescent control group. During the 7th week, a Morris water maze test was performed to assess learning and memory. At the end of the experiment, serum and brain samples were collected to measure concentrations of antioxidant enzymes, including malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione reductase (GSH-Px) in serum, and the neurotransmitters, including γ-aminobutyric acid (γ-GABA), Glutamic (Glu), and monoamine oxidase B (MAO-B) in the brain. Histopathology of the hippocampus was assessed using hematoxylin-eosin (H&E) staining. RESULTS: The results suggested that treatment with DOF improved learning as measured by escape latency, total distance, and target quadrant time, and also increased levels of γ-GABA in the brain. In addition, DOF decreased the levels of MDA, Glu, and MAO-B, and improved SOD and GSHPx. Histopathological analysis showed that DOF also significantly reduced structural lesions and neurodegeneration in the hippocampus relative to untreated senescent rats. CONCLUSION: DOF alleviated brain aging and improved the spatial learning abilities in senescent rats, potentially by attenuating oxidative stress and thus reducing hippocampal damage and balancing the release of neurotransmitters. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.
AIM AND OBJECTIVE: The Dendrobium officinalis flower (DOF ) is popular in China due to common belief in its anti-aging properties and positive effects on "nourish yin". However, there have been relatively few confirmatory pharmacological experiments conducted to date. The aim of this work was to evaluate whether DOF has beneficial effects on learning and memory in senescent rats , and, if so, to determine its potential mechanism of effect. MATERIALS AND METHODS: SD rats were administrated orally DOF at a dose of 1.38, or 0.46 g/kg once a day for 8 weeks. Two other groups included a healthy untreated control group and a senescent control group. During the 7th week, a Morris water maze test was performed to assess learning and memory. At the end of the experiment, serum and brain samples were collected to measure concentrations of antioxidant enzymes, including malondialdehyde (MDA ), superoxide dismutase (SOD), catalase (CAT ), and glutathione reductase (GSH-Px ) in serum, and the neurotransmitters, including γ-aminobutyric acid (γ-GABA), Glutamic (Glu ), and monoamine oxidase B (MAO-B ) in the brain. Histopathology of the hippocampus was assessed using hematoxylin -eosin (H&E ) staining. RESULTS: The results suggested that treatment with DOF improved learning as measured by escape latency, total distance, and target quadrant time, and also increased levels of γ-GABA in the brain. In addition, DOF decreased the levels of MDA , Glu , and MAO-B , and improved SOD and GSHPx. Histopathological analysis showed that DOF also significantly reduced structural lesions and neurodegeneration in the hippocampus relative to untreated senescent rats . CONCLUSION: DOF alleviated brain aging and improved the spatial learning abilities in senescent rats , potentially by attenuating oxidative stress and thus reducing hippocampal damage and balancing the release of neurotransmitters. Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.
Entities: Chemical
Disease
Gene
Species
Keywords:
Dendrobium officinalis flower; aging; antioxidant; hippocampus; memory function; neurotransmitters
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Year: 2020
PMID： 32264810 DOI： 10.2174/1386207323666200407080352
Source DB: PubMed Journal: Comb Chem High Throughput Screen ISSN： 1386-2073 Impact factor: 1.339