Influence of dietary lipids on the fatty acid composition and stearoyl-CoA desaturase expression in hybrid tilapia (Oreochromis niloticus×O. aureus) under cold shock

Hsieh, Shu‐Ling; Hu, Chun-Yi; Hsu, Ya-Ting; Hsieh, Tusty‐Jiuan

doi:10.1016/j.cbpb.2007.02.010

Cited by 57 publications

(37 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There was an increase in mRNA expression of SCD1 in the liver when PO levels were elevated in the diets. This same observation was made by Hsieh et al (2007) when tilapia were fed diets with different dietary lipid sources. This is probably due to the higher SFAs coupled with lower PUFAs which have been reported to upregulate SCD expression in tilapia (Hsieh et al, 2007).…”

Section: Discussionsupporting

confidence: 69%

Untitled

Ayisi¹,

Zhao²

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

This study was aimed at elucidating the effects of replacing fish oil (FO) with palm oil (PO) on tissue fatty acid composition, lipogenic enzyme activities and mRNA expression of genes related to lipid metabolism in Nile tilapia, Oreochromis niloticus (6.72± 0.14g). An eight week feeding trial was conducted using five isonitrogenous and isolipidic diets containing 0% PO, 25% PO, 50% PO, 75% PO and 100% PO. PO supplementation led to a significant increase in total saturated fatty acid (SFA), total mono unsaturated fatty acids (MUFA) and 18: 2n-6, whiles DHA, EPA, total n-3 as well as 20: 2n-6 were reduced significantly in the liver (P＜0.05). With the exception of glycerol-3-phosphate acyltransferase (GPAT) enzyme activity, supplementing tilapia diet with PO significantly increased fatty acid synthesase (FAS), acetyl-CoA carboxylase (ACC), steroyl-CoA desaturase 1 (SCD1), ATP citrate lyase (ACYL), carnitine palmitoyltransferase Ia (CPTIa) and carnitine palmitoyltransferase Ib (CPT Ib) (P＜0.05). In addition, significant/positive correlations were observed among dietary PO and/or liver tissue FA with FAS, ACC, SCD1 and ACYL mRNA expression while a negative correlation was recorded for CPTI mRNA expression. Generally, inclusion of PO in tilapia diets resulted in lipid accumulation in the liver and altered the key gene expression of lipid metabolism.

show abstract

Section: Discussionsupporting

confidence: 69%

Untitled

Ayisi¹,

Zhao²

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

show abstract

“…This is consistent with our observation that tilapia reared at 28°C had the highest n-6 PUFA levels and highest growth efficiency. However, Chou and Shiau (1999) and Hsieh et al (2007) pointed out that both n-3 and n-6 PUFAs are essential for maximal growth of hybrid tilapia. Thus, our future research will focus on the effect of different dietary oil sources on tilapia growth performance, fatty acid composition, and other physiological indices.…”

Section: Effect Of Temperature On Blood Parameters Of Gift Tilapia Jumentioning

confidence: 97%

“…Thus, efforts to regulate the fatty acid content by controlling temperature must also consider other factors, such as growth. Additionally, previous studies have noted that tilapia, like other warm-water fish, are more inclined to requiring greater amounts of n-6 PUFA compared with n-3 PUFA for maximal growth (Hsieh et al 2007). Huang et al (1998) reported that high levels of n-3 PUFA depress the growth of tilapia.…”

Section: Effect Of Temperature On Blood Parameters Of Gift Tilapia Jumentioning

confidence: 97%

“…Additionally, the changes in MUFA levels were highly correlated with changes in SCD activity in milkfish hepatic microsomes. The activity and gene expression of SCD have been reported in a number of aquatic animals, including grass carp Ctenopharyngodon idella (Hsieh and Kuo 2005;Chang et al 2001), common carp (Tiku et al 1996), common octopus Octopus vulgaris (Monroig et al 2012), hybrid tilapia Oreochromis niloticus 9 O. aureus (Hsieh et al 2007), and the sea urchin Strongylocentrotus intermedius (Ding et al 2012). SCD gene cloning and analysis in tilapia were first performed by Hsieh et al (2004), who also studied hormonal effects on SCD activity and fatty acid composition in tilapia.…”

Section: Introductionmentioning

confidence: 97%

“…SCD gene cloning and analysis in tilapia were first performed by Hsieh et al (2004), who also studied hormonal effects on SCD activity and fatty acid composition in tilapia. Subsequently, the authors reported the influence of dietary lipids on the fatty acid composition and stearoyl-CoA desaturase expression in hybrid tilapia exposed to cold shock (Hsieh et al 2007).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in the physiological parameters, fatty acid metabolism, and SCD activity and expression in juvenile GIFT tilapia (Oreochromis niloticus) reared at three different temperatures

Qiang

et al. 2015

Fish Physiol Biochem

View full text Add to dashboard Cite

We evaluated the effects of rearing temperature on the composition of fatty acids and stearoyl-CoA desaturase (SCD) activity and gene expression in GIFT (genetically improved farmed tilapia) tilapia. Three triplicate groups of fish were reared for 40 days at 22, 28, or 34 °C. At the end of the trial, the final body weight of juveniles reared at 28 °C was higher than that of fish reared at 22 or 34 °C. Feed intake, feed efficiency, and the protein efficiency ratio were also higher at 28 °C. The fatty acid composition of muscle tissue differed significantly (P < 0.05) among the treatment groups. The content of SFA decreased with decreasing temperature, whereas the UFA content increased. We observed high levels of PUFA, particularly n-3 PUFAs, in fish reared at the lower temperature. Rearing at low temperature significantly (P < 0.05) increased the expression and activity of the SCD gene. Increased SCD activity and gene expression can increase the biosynthesis of MUFAs in GIFT tilapia muscle. Additionally, cold acclimation can decrease the content of TC and TG in GIFT tilapia, which can help increase cold tolerance.

show abstract