High doses of sodium ascorbate act as a prooxidant and protect gnotobiotic brine shrimp larvae (Artemia franciscana) against Vibrio harveyi infection coinciding with heat shock protein 70 activation

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Fältnamn	Indikatorer	Metadata
000		02843naa a2200289 4500
001		oai:slubar.slu.se:98693
003		SwePub
008		240410s2019 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://res.slu.se/id/publ/986932 URI
024	7	a https://doi.org/10.1016/j.dci.2018.11.0072 DOI
040		a (SwePub)slu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Baruah, Kartiku Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjurens utfodring och vård (HUV),Department of Animal Nutrition and Management,Ghent University4 aut
245	1 0	a High doses of sodium ascorbate act as a prooxidant and protect gnotobiotic brine shrimp larvae (Artemia franciscana) against Vibrio harveyi infection coinciding with heat shock protein 70 activation
264	1	b Elsevier BV,c 2019
264	1	b Elsevier,c 2024
520		a Ascorbate is an essential nutrient commonly regarded as an antioxidant. In this study, using axenic brine shrimp and pathogenic strain Vibrio harveyi as the host-pathogen model, we confirmed that pretreatment of sodium ascorbate (NaAs), at an optimum concentration, was a prooxidant by generation of hydrogen peroxide, inducing protective effects in the brine shrimp against V. harveyi infection. Such a protective effect could be neutralized by the addition of an antioxidant enzyme catalase. We further showed that generation of oxygen radicals is linked to the induction of heat shock protein 70 (Hsp70), which is involved in eliciting the antioxidant protection system including superoxidase dismutase (SOD) and possibly many other immune responses. Furthermore, using RNA interference technique, we found that the pretreatment of sodium ascorbate increased the survival significantly in the control knockdown groups (using green fluorescent protein, GFP) but not in Hsp70 knockdown groups and the result directly suggested that the up-regulated Hsp70 induced by sodium ascorbate pretreatment induced the protective effect. These results provide a mechanistic rationale for exploring the further use of ascorbate for antimicrobial therapy in aquaculture.
650	7	a LANTBRUKSVETENSKAPERx Lantbruksvetenskap, skogsbruk och fiskex Fisk- och akvakulturforskning0 (SwePub)401072 hsv//swe
650	7	a AGRICULTURAL SCIENCESx Agriculture, Forestry and Fisheriesx Fish and Aquacultural Science0 (SwePub)401072 hsv//eng
710	2	a Sveriges lantbruksuniversitetb Institutionen för husdjurens utfodring och vård (HUV)4 org
710	2	a Sveriges lantbruksuniversitet
773	0	t Developmental and Comparative Immunologyd : Elsevier BVg 92, s. 69-76q 92<69-76x 0145-305Xx 1879-0089
856	4 8	u https://res.slu.se/id/publ/98693
856	4 8	u https://doi.org/10.1016/j.dci.2018.11.007

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