Deterioration of chum salmon muscle during spawning migration. Part IX. Isolation and characterization of a carotenoid-carrying lipoprotein in the serum of chum salmon (Oncorhynchus keta) during spawning migration.

Ando, Seiichi; Takeyama, Tetsushige; Hatano, Mutsuo

doi:10.1271/bbb1961.50.907

Cited by 27 publications

(3 citation statements)

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“…Studies in salmon have provided evidence that astaxanthin is strongly associated with a protein likely to be serum albumin [ 12 , 26 ]. We know that serum albumin associates with the surface of lipoprotein particles [ 22 ], and we also know that albumin is the major transporter of free fatty acids released during lipolysis by LPL to tissues (including liver and muscle) [ 13 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Carotenoid dynamics in Atlantic salmon

et al. 2006

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Background: Carotenoids are pigment molecules produced mainly in plants and heavily exploited by a wide range of organisms higher up in the food-chain. The fundamental processes regulating how carotenoids are absorbed and metabolized in vertebrates are still not fully understood. We try to further this understanding here by presenting a dynamic ODE (ordinary differential equation) model to describe and analyse the uptake, deposition, and utilization of a carotenoid at the wholeorganism level. The model focuses on the pigment astaxanthin in Atlantic salmon because of the commercial importance of understanding carotenoid dynamics in this species, and because deposition of carotenoids in the flesh is likely to play an important life history role in anadromous salmonids.

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Section: Introductionmentioning

confidence: 99%

Carotenoid dynamics in Atlantic salmon

et al. 2006

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“…The silkworm ( Bombyx mori ) secreted C 16 dienyl alcohol (bombykol) as a sex pheromone. Among a series of labeled fatty acids with a saturated C 12 -C 18 chain, only 16:Acid was reliably incorporated into the bombykol (Ando et al, 1986). The other free acids did not enter into the biosynthetic pathway of bombykol.…”

Section: Discussionmentioning

confidence: 99%

Biosynthetic Pathway for Sex Pheromone Components Produced in a Plusiinae Moth, Plusia festucae

et al. 2011

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While many Plusiinae species commonly secrete (Z)-7-dodecenyl acetate (Z7-12:OAc) as a key pheromone component, female moths of the rice looper (Plusia festucae) exceptionally utilize (Z)-5-dodecenyl acetate (Z5-12:OAc) to communicate with their partners. GC–MS analysis of methyl esters derived from fatty acids included in the pheromone gland of P. festucae showed a series of esters monounsaturated at the ω7-position, i.e., (Z)-5-dodecenoate, (Z)-7-tetradecenoate, (Z)-9-hexadecenoate (Z9-16:Me), and (Z)-11-octadecenoate (Z11-18:Me). By topical application of D3-labled palmitic acid (16:Acid) and stearic acid (18:Acid) to the pheromone glands, similar amounts of D3-Z5-12:OAc were detected. The glands treated with D13-labeled monoenoic acids (Z9-16:Acid and Z11-18:Acid), which were custom-made by utilizing an acetylene coupling reaction with D13-1-bromohexane, also produced similar amounts of D13-Z5-12:OAc. These results suggested that Z5-12:OAc was biosynthesized by ω7-desaturase with low substrate specificity, which could introduce a double bond at the 9-position of a 16:Acid derivative and the 11-position of an 18:Acid derivative. Additional experiments with the glands pretreated with an inhibitor of chain elongation supported this speculation. Furthermore, a comparative study with another Plusiinae species (Chrysodeixis eriosoma) secreting Z7-12:OAc indicated that the β-oxidation systems of P. festucae and C. eriosoma were different.

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“…Besides providing vitamin A [ 11 , 12 ], astaxanthin serves as a very potent antioxidant, effectively quenching singlet oxygen, scavenging free radicals, and preventing lipid peroxidation [ 13 , 14 ]. Astaxanthin is transported by the High Density Lipoprotein (HDL) and the Very High Density Lipoprotein (VHDL) fractions of the plasma of chum salmon, Oncorhynchus keta [ 15 ], and high levels of astaxanthin are observed in the plasma of salmonids [ 16 ]. Carotenoid accumulation in various tissues is observed in a wide range of animals and fish at varying levels [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Characterisation of a novel paralog of scavenger receptor class B member I (SCARB1) in Atlantic salmon (Salmo salar)

et al. 2011

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BackgroundRed flesh colour is a unique trait found in some salmonid genera. Carotenoid pigments are not synthesized de novo in the fish, but are provided by dietary uptake. A better understanding of the molecular mechanisms underlying the cellular uptake and deposition of carotenoids could potentially be used to improve the low muscle deposition rate that is typically found in farmed Atlantic salmon. In addition, from an evolutionary point of view, the establishment and maintenance of this trait is still poorly understood. It has been demonstrated in several species that scavenger receptor class B, member 1 (SCARB1) is involved in intestinal absorption of carotenoids, which makes this gene a possible source of genetic variation in salmonid flesh pigmentation.ResultsIn this study, a novel paralog of SCARB1 (SCARB1-2) was detected through screening for genetic variation in Atlantic salmon SCARB1. Full length SCARB1-2 encodes a protein with 89% identity to Atlantic salmon SCARB1, except for the C-terminal cytoplasmic tail that shows only 12% identity. The most prominent site of SCARB1 mRNA expression was in the mid gut, while a five-fold lower level was detected in Atlantic salmon skeletal muscle and liver. The SCARB1-2 mRNA was equally expressed in liver, muscle and mid gut, and at a lower level than SCARB1 mRNA. A total of seven different SCARB1-2 alleles comprising repetitive enhancer of zeste motifs (EZH2) were identified in the founding parents of a resource Atlantic salmon population. We mapped the SCARB1-2 paralog to a region on Atlantic salmon chromosome 1, containing a putative QTL for flesh colour. Addition of the SCARB1-2 marker increased the significance of this QTL, however the large confidence interval surrounding the QTL precludes confirmation of SCARB1-2 as a causative gene underlying variation in this trait.ConclusionWe have characterised a novel paralog of SCARB1 (SCARB1-2), have mapped it to Atlantic salmon chromosome 1 and have described its expression in various tissues. Mapping with SCARB1-2 alleles added further evidence for a QTL affecting flesh colour on this chromosome, however further studies are needed to confirm a functional role for this gene in flesh colour pigmentation.

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Deterioration of chum salmon muscle during spawning migration. Part IX. Isolation and characterization of a carotenoid-carrying lipoprotein in the serum of chum salmon (Oncorhynchus keta) during spawning migration.

Cited by 27 publications

References 1 publication

Carotenoid dynamics in Atlantic salmon

Carotenoid dynamics in Atlantic salmon

Biosynthetic Pathway for Sex Pheromone Components Produced in a Plusiinae Moth, Plusia festucae

Characterisation of a novel paralog of scavenger receptor class B member I (SCARB1) in Atlantic salmon (Salmo salar)

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