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题名: Starvation reduces the heat shock protein responses in white sturgeon larvae
作者: Han, Dong2; Huang, Susie S. Y.1; Wang, Wei-Fang3; Deng, Dong-Fang; Hung, Silas S. O.1
通讯作者: Hung, SSO (reprint author), Univ Calif Davis, Dept Anim Sci, 1 Shields Ave, Davis, CA 95616 USA
关键词: Nutrient supply ; Thermal stress ; Hsp70 ; Hsp90 ; Sturgeon larvae
刊名: ENVIRONMENTAL BIOLOGY OF FISHES
发表日期: 2012-02-01
DOI: 10.1007/s10641-011-9918-8
卷: 93, 期:3, 页:333-342
收录类别: SCI
文章类型: Article
部门归属: [Huang, Susie S. Y.; Hung, Silas S. O.] Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA; [Han, Dong] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Wang, Wei-Fang] Chinese Acad Fishery Sci, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: CALFED[2006-1035]; Natural Science Foundation of China (PR China)[31072225]; China Scholarship Council (PR China); Nature Science and Engineering Council of Canada
类目[WOS]: Ecology ; Marine & Freshwater Biology
研究领域[WOS]: Environmental Sciences & Ecology ; Marine & Freshwater Biology
摘要: This study investigates the responses of white sturgeon larvae (Acipenser transmontanus) to starvation and thermal stress, through the measurement of nutritional status (i.e. growth performances) and cellular biomarkers: heat shock proteins (Hsp) 70 and 90. White sturgeon larvae (25 day post hatch; initial weight 179.0 +/- 5.1 mg) were fed (20% body weight per day) or starved for 24, 48 or 72 hrs. Every 24 hrs, five larvae from each of the starved or fed treatment replicates were exposed to heat shock resulting from an increase in water temperature from 19 degrees C to 26 degrees C, at a rate of 1 degrees C per 15 min, and maintained at 26 degrees C for 4 hrs. No mortality was observed in this study. Starvation significantly (p < 0.05) decreased the body weight and body contents of energy, protein, and lipid of the experimental larvae, compared to the fed larvae. Heat shock induced the expressions of Hsp70 and Hsp90 in both the fed and starved group; however, starvation reduced the induction at all sampling points. The current study demonstrates that poor larval nutritional status, assessed by the aforementioned parameters, reduced heat shock responses to thermal stress, as measured by heat shock protein levels. Furthermore, Hsp70 and 90 are more sensitive to heat shock and starvation, respectively. This may be, in part, a result of the different functioning of the heat shock proteins in cellular stress response and warrants further study.
英文摘要: This study investigates the responses of white sturgeon larvae (Acipenser transmontanus) to starvation and thermal stress, through the measurement of nutritional status (i.e. growth performances) and cellular biomarkers: heat shock proteins (Hsp) 70 and 90. White sturgeon larvae (25 day post hatch; initial weight 179.0 +/- 5.1 mg) were fed (20% body weight per day) or starved for 24, 48 or 72 hrs. Every 24 hrs, five larvae from each of the starved or fed treatment replicates were exposed to heat shock resulting from an increase in water temperature from 19 degrees C to 26 degrees C, at a rate of 1 degrees C per 15 min, and maintained at 26 degrees C for 4 hrs. No mortality was observed in this study. Starvation significantly (p < 0.05) decreased the body weight and body contents of energy, protein, and lipid of the experimental larvae, compared to the fed larvae. Heat shock induced the expressions of Hsp70 and Hsp90 in both the fed and starved group; however, starvation reduced the induction at all sampling points. The current study demonstrates that poor larval nutritional status, assessed by the aforementioned parameters, reduced heat shock responses to thermal stress, as measured by heat shock protein levels. Furthermore, Hsp70 and 90 are more sensitive to heat shock and starvation, respectively. This may be, in part, a result of the different functioning of the heat shock proteins in cellular stress response and warrants further study.
关键词[WOS]: LOWER COLUMBIA RIVER ; ACIPENSER-TRANSMONTANUS ; MOLECULAR CHAPERONES ; GROWTH-PERFORMANCE ; RAINBOW-TROUT ; TEMPERATURE ; STRESS ; ESTUARY ; METABOLISM ; EXPRESSION
语种: 英语
WOS记录号: WOS:000299768600003
ISSN号: 0378-1909
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16709
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Chinese Acad Fishery Sci, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

Recommended Citation:
Han, Dong; Huang, Susie S. Y.; Wang, Wei-Fang; Deng, Dong-Fang; Hung, Silas S. O..Starvation reduces the heat shock protein responses in white sturgeon larvae,ENVIRONMENTAL BIOLOGY OF FISHES,2012,93(3):333-342
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