FISH PHYSIOLOGY AND BIOCHEMISTRY
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2023
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IF 2.9
Shen Yuedong,Zhao Wenli,Bao Yangguang,Zhu Jiayun,Jiao Lefei,Duan Xuemei,Pan Tingting,Monroig Óscar,Zhou Qicun,Jin Min
Glucose-regulated protein 78 ( grp78 ) and activating transcription factor 6α ( atf6α ) are considered vital endoplasmic reticulum (ER) molecular chaperones and ER stress (ERS) sensors, respectively. In the present study, the full cDNA sequences of these two ERS-related genes were first cloned and characterized from black seabream ( Acanthopagrus schlegelii ). The grp78 cDNA sequence is 2606 base pair (bp) encoding a protein of 654 amino acids (aa). The atf6α cDNA sequence is 2168 base pair (bp) encoding a protein of 645 aa. The predicted aa sequences of A. schlegelii grp78 and atf6α indicated that the proteins contain all the structural features, which were characteristic of the two genes in other species. Tissues transcript abundance analysis revealed that the mRNAs of grp78 and atf6α were expressed in all measured tissues, but the highest expression of these two genes was all recorded in the gill followed by liver/ brain. Moreover, in vivo experiment found that fish intake of a high lipid diet (HLD) can trigger ERS by activating grp78 /Grp78 and atf6α/ Atf6α. However, it can be alleviated by dietary betaine supplementation, similar results were also obtained by in vitro experiment using primary hepatocytes of A. schlegelii . These findings will be beneficial for us to evaluate the regulator effects of HLD supplemented with betaine on ERS at the molecular level, and thus provide some novel insights into the functions of betaine in marine fish fed with an HLD.
研究领域:
分子生物学
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水产养殖
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营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Coatings
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2019
·Vol. 9
·期 8
·489
·
IF 2.33
Qianqian Zhou,Peiyun Li,Shiyuan Fang,Wenru Liu,Jun Mei,Jing Xie
This research was to evaluate the effects of gelatin (G) active coating containing eugenol/β-cyclodextrin (βCD) emulsions combined with superchilling (−0.9 °C) on physicochemical, microbiological, and organoleptic properties of Chinese seabass samples during 30 days of storage. Results showed that seabass samples dipped in G-βCD coatings containing 0.15% or 0.3% eugenol combined with superchilling could significantly lower the total volatile basic nitrogen, K value, total viable count, H2S-producing bacteria,Pseudomonasspp. and Psychrophilic counts, and free fatty acids. Further, G-βCD coatings containing eugenol with superchilling (−0.9 °C) were more effective in retarding the water migration by low field NMR and MRI results, maintaining quality of seabass during storage according to organoleptic evaluation results.Keywords:Chinese seabass;superchilling;active coating;eugenol;shelf life
研究领域:
食品科学
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水产保鲜
✓ 已验证
产品关联
DOI
高影响因子
AQUACULTURE NUTRITION
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2019
·Vol. 26
·期 3
·646-656
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IF 2.098
Hameeda Kalhoro,Shengli Tong,Lei Wang,Qingjun Shao
Taurine is a component that tends to be deficient in fish diets that contain higher plant-derivative proteins. Acanthopagrus schlegelii juveniles (IBW − 11.28 g) were fed nine diets containing SPC levels (SPC40, SPC60, SPC80 and SPC100), or supplemented with 5 g/kg of taurine at each replacement level. Our results showed higher WGR and SGR in SPC60 + TAU (WGR; 224.67, SGR; 2.10) followed by SPC40 + TAU (WGR; 221.75, SGR; 2.09). Phosphorus retention efficiency was significantly raised as the SPC increased when compared with the control diet. Taurine addition showed an incline in the nitrogen retention efficiency. An effect was observed within FR between fish and the SPC content. ADCs of dry matter, crude lipid and phosphorous were affected by SPC, while taurine addition affected only crude lipid. A significant effect was seen in ash and phosphorus by the SPC and taurine. TAU supplementation showed an increased T-AOC activity in the SPC80 + TAU (1.90), while malondialdehyde and catalase activity were reduced except in completely replaced fish meal groups. It could be concluded that black sea bream can accept the substitution of FM with 60% of SPC while at the inclusion of dietary TAU (5 g/kg) growth could be improved.
研究领域:
水产养殖
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营养学
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海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Marine Science
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2021
·
IF 4.912
Dong Yan-Zou,Xia Tian,Lin Ji-Bin,Wang Ling,Song Kai,Zhang Chun-Xiao
This study aimed to investigate the effects of quercetin (QUE) on fat deposition and the underlying mechanism. Fish were fed four test diets: normal fat diet (NFD), high-fat diet (HFD), and HFD supplemented with 0.5 or 1.0 g/kg quercetin (QUE0.5 or QUE1.0). The results showed that HFD feeding resulted in poor growth and feed utilization while QUE treatment reversed this. The fat contents of serum and liver were increased by HFD and QUE supplementation significantly decreased fat content. Furthermore, gene expressions and ultrastructure observation showed that mitochondrial biogenesis and mitophagy were inhibited and endoplasmic reticulum stress (ERS) in the HFD group. QUE can activate the biogenesis and autophagy of mitochondria and suppress ERS, which is related to its fat-lowering effect.
研究领域:
水产养殖
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营养学
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分子生物学
✓ 已验证
产品关联
DOI
高影响因子
AQUACULTURE
·
2024
·
IF 3.9
Wenli Zhao,Yuedong Shen,Yangguang Bao,Óscar Monroig,Tingting Zhu,Peng Sun,Douglas R. Tocher,Qicun Zhou,Min Jin
Liver is considered the critical tissue for metabolic processing of dietary nutrients including lipids. High-fat diets (HFD) can induce hepatic lipotoxic injury, but the mechanism is unclear. This study aimed to elucidate the underlying role of endoplasmic reticulum stress (ERS) in mediating HFD-induced hepatic lipotoxic injury in black seabream ( Acanthopagrus schlegelii ) via in vitro and in vivo experiments. For the in vitro experiment, isolated hepatocytes from black seabream were incubated for 24 h in medium (Control), or medium supplemented with 200 μM oleic acid (OA) alone or in combination with 20 μM 4-phenyl butyric acid (OA + 4-PBA). In the in vivo experiment, black seabream juveniles (3.30 ± 0.10 g) were fed diets containing lipid at 12.4% (Control) or 18.6% (HFD) for 8 weeks, after which the HFD-fed fish were divided into three groups and, on alternate days over a period of 8 days, subjected to intraperitoneal injections of 50 mg/kg 4-PBA in hydroxypropyl-β-cyclodextrin (HBC) (treatment 4-PBA) or carrier alone (treatment HFD + HBC) versus no injection (HFD). The contents of triglyceride and non-esterified fatty acid, as well as expression levels of genes and proteins involved in lipid metabolism, ERS, apoptosis and inflammation were determined in liver and isolated hepatocytes, and oil-red O staining, ultrastructural observation, flow cytometry assay of apoptosis rate, and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay (TUNEL) staining were performed on hepatocytes. The in vitro experiment showed that 4-PBA treatment significantly decreased lipid accumulation, and the OA-induced expression levels of genes/proteins linked to ERS, lipogenesis, inflammation and apoptosis in hepatocytes. Transmission Electron Microscope (TEM) imaging showed that 4-PBA treatment mitigated the ER swelling induced by OA. These results were confirmed in the in vivo experiment, where 4-PBA injection reduced lipid deposition and expression levels of genes/proteins related to ERS, lipogenesis, inflammation and apoptosis in liver compared to the HFD treatment. In conclusion, these results confirmed that ERS plays a contributing regulatory role in HFD- and OA-induced lipotoxic damage including lipid accumulation, apoptosis and inflammation in liver and isolated hepatocytes of black seabream, which supply a new perspective in the cross-talk of ERS and hepatic lipotoxic damage in hepatocytes/liver of marine fish and provide theoretical guidance for the prevention and treatment of hepatic lipotoxic damage.
研究领域:
海洋生物学
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细胞生物学
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分子生物学
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营养学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
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2021
·Vol. 11
·期 2
·147
·
IF 2.881
Xuan Ma,Qianqian Zhou,Weiqiang Qiu,Jun Mei,Jing Xie
The purpose of this study was to evaluate the effect of an active gelatin coating containing eugenol and vacuum on the microbial diversity of Chinese seabass (Lateolabrax maculatus) during cold (−0.9 °C) storage. The bacterial sequences in Chinese seabass were observed using a high-throughput sequencing technique targeting the V3–V4 region of the 16S Ribosomal DNA (rDNA) on 0, 12th, and 24th day, which showed a more comprehensive estimate of the microbial diversity in seabass samples compared with microbial enumeration. The results revealed that the species diversity of fresh seabass was rich, mainly includingCarnobacterium,Glutamicibacter, andPseudomonas, with abundance ratios of 0.286, 0.160, and 0.130, respectively.PseudomonasandShewanellawere the primary contaminants in the spoiled control samples, where the abundance ratios increased from 0.220 and 0.174 on the 12th day to 0.802 and 0.163 on the 24th day, respectively. Vacuum treatment could inhibit the growth ofPseudomonasandShewanellasuch that when stored on the 12th day,Brochothrixbecame the superior genus. However,PseudomonasandShewanelladominated the storage until the 24th day, where their abundance ratios were 0.343 and 0.279, respectively. The inhibition ofPseudomonasandCarnobacteriumwas gradually enhanced with increasing concentrations of eugenol. Furthermore, an active gelatin coating containing eugenol and vacuum treatment was more effective at inhibiting the increase of the total volatile basic nitrogen. This study confirmed that an active gelatin coating containing eugenol and vacuum could reduce the species of bacteria, inhibit the growth and reproduction of the main dominant spoilage bacteria, and delay the spoilage of seabass.Keywords:coating preservation;high-throughput sequencing;shelf life;diversity
研究领域:
食品科学
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微生物学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）