La maladie de Parkinson au Canada (serveur d'exploration)

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Examining the neuroprotective effects of protocatechuic acid and chrysin on in vitro and in vivo models of Parkinson disease.

Identifieur interne : 000731 ( Main/Exploration ); précédent : 000730; suivant : 000732

Examining the neuroprotective effects of protocatechuic acid and chrysin on in vitro and in vivo models of Parkinson disease.

Auteurs : Zaijun Zhang [République populaire de Chine] ; Guohui Li [République populaire de Chine] ; Samuel S W. Szeto [République populaire de Chine] ; Cheong Meng Chong [République populaire de Chine] ; Quan Quan [République populaire de Chine] ; Chen Huang [République populaire de Chine] ; Wei Cui [République populaire de Chine] ; Baojian Guo [République populaire de Chine] ; Yuqiang Wang [République populaire de Chine] ; Yifan Han [République populaire de Chine] ; K W Michael Siu [Canada] ; Simon Ming Yuen Lee [République populaire de Chine] ; Ivan K. Chu [République populaire de Chine]

Source :

RBID : pubmed:25769424

English descriptors

Abstract

Polypharmacology-based strategies using drug combinations with different mechanisms of action are gaining increasing attention as a novel methodology to discover potentially innovative medicines for neurodegenerative disorders. We used this approach to examine the combined neuroprotective effects of two polyphenols, protocatechuic acid (PCA) and chrysin, identified from the fruits of Alpinia oxyphylla. Our results demonstrated synergistic neuroprotective effects, with chrysin enhancing the protective effects of PCA, resulting in greater cell viability and decreased lactate dehydrogenase release from 6-hydroxydopamine-treated PC12 cells. Their combination also significantly attenuated chemically induced dopaminergic neuron loss in both zebrafish and mice. We examined the molecular mechanisms underlying these collective cytoprotective effects through proteomic analysis of treated PC12 cells, resulting in the identification of 12 regulated proteins. Two were further characterized, leading to the determination that pretreatment with PCA and chrysin resulted in (i) increased nuclear factor-erythroid 2-related factor 2 protein expression and transcriptional activity; (ii) modulation of cellular redox status with the upregulated expression of hallmark antioxidant enzymes, including heme oxygenase-1, superoxide dismutase, and catalase; and (iii) decreased levels of malondialdehyde, a known lipid peroxidation product. Treatment with PCA and chrysin also inhibited activation of nuclear factor-κB and expression of inducible nitric oxide synthase. Our findings suggest that natural products, when used in combination, can be effective potential therapeutic agents for treating diseases such as Parkinson disease. A therapy involving both PCA and chrysin exhibits its enhanced neuroprotective effects through a combination of cellular mechanisms: antioxidant cytoprotection and anti-inflammation.

DOI: 10.1016/j.freeradbiomed.2015.02.030
PubMed: 25769424


Affiliations:


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<div type="abstract" xml:lang="en">Polypharmacology-based strategies using drug combinations with different mechanisms of action are gaining increasing attention as a novel methodology to discover potentially innovative medicines for neurodegenerative disorders. We used this approach to examine the combined neuroprotective effects of two polyphenols, protocatechuic acid (PCA) and chrysin, identified from the fruits of Alpinia oxyphylla. Our results demonstrated synergistic neuroprotective effects, with chrysin enhancing the protective effects of PCA, resulting in greater cell viability and decreased lactate dehydrogenase release from 6-hydroxydopamine-treated PC12 cells. Their combination also significantly attenuated chemically induced dopaminergic neuron loss in both zebrafish and mice. We examined the molecular mechanisms underlying these collective cytoprotective effects through proteomic analysis of treated PC12 cells, resulting in the identification of 12 regulated proteins. Two were further characterized, leading to the determination that pretreatment with PCA and chrysin resulted in (i) increased nuclear factor-erythroid 2-related factor 2 protein expression and transcriptional activity; (ii) modulation of cellular redox status with the upregulated expression of hallmark antioxidant enzymes, including heme oxygenase-1, superoxide dismutase, and catalase; and (iii) decreased levels of malondialdehyde, a known lipid peroxidation product. Treatment with PCA and chrysin also inhibited activation of nuclear factor-κB and expression of inducible nitric oxide synthase. Our findings suggest that natural products, when used in combination, can be effective potential therapeutic agents for treating diseases such as Parkinson disease. A therapy involving both PCA and chrysin exhibits its enhanced neuroprotective effects through a combination of cellular mechanisms: antioxidant cytoprotection and anti-inflammation.</div>
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<name sortKey="Chu, Ivan K" sort="Chu, Ivan K" uniqKey="Chu I" first="Ivan K" last="Chu">Ivan K. Chu</name>
<name sortKey="Cui, Wei" sort="Cui, Wei" uniqKey="Cui W" first="Wei" last="Cui">Wei Cui</name>
<name sortKey="Guo, Baojian" sort="Guo, Baojian" uniqKey="Guo B" first="Baojian" last="Guo">Baojian Guo</name>
<name sortKey="Han, Yifan" sort="Han, Yifan" uniqKey="Han Y" first="Yifan" last="Han">Yifan Han</name>
<name sortKey="Huang, Chen" sort="Huang, Chen" uniqKey="Huang C" first="Chen" last="Huang">Chen Huang</name>
<name sortKey="Li, Guohui" sort="Li, Guohui" uniqKey="Li G" first="Guohui" last="Li">Guohui Li</name>
<name sortKey="Quan, Quan" sort="Quan, Quan" uniqKey="Quan Q" first="Quan" last="Quan">Quan Quan</name>
<name sortKey="Szeto, Samuel S W" sort="Szeto, Samuel S W" uniqKey="Szeto S" first="Samuel S W" last="Szeto">Samuel S W. Szeto</name>
<name sortKey="Wang, Yuqiang" sort="Wang, Yuqiang" uniqKey="Wang Y" first="Yuqiang" last="Wang">Yuqiang Wang</name>
<name sortKey="Yuen Lee, Simon Ming" sort="Yuen Lee, Simon Ming" uniqKey="Yuen Lee S" first="Simon Ming" last="Yuen Lee">Simon Ming Yuen Lee</name>
</country>
<country name="Canada">
<noRegion>
<name sortKey="Michael Siu, K W" sort="Michael Siu, K W" uniqKey="Michael Siu K" first="K W" last="Michael Siu">K W Michael Siu</name>
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</country>
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HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000731 | SxmlIndent | more

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Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Canada
   |area=    ParkinsonCanadaV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     pubmed:25769424
   |texte=   Examining the neuroprotective effects of protocatechuic acid and chrysin on in vitro and in vivo models of Parkinson disease.
}}

Pour générer des pages wiki

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