Muscular buffering capacity of the parr and smolts in Oncorhynchus masou

Ogata, Hiroshi; Konno, Satoshi; Silverstein, Jeffrey T.

doi:10.1016/s0044-8486(98)00357-3

Cited by 17 publications

(10 citation statements)

References 18 publications

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“…The nearly doubled concentration of Ans in muscle samples from fish fed the high His diet compared with the CD may represent an important buffering factor enabling the salmon to better withstand pH changes in white muscle tissue induced by burst swimming in SW. Ogata et al. (1998) have shown increased levels of muscle Ans and reduced levels of muscle His in masu salmon, O. masou (Brevoort), smolt vs. parr, and correlated these findings to measured differences in muscle‐buffering capacities.…”

Section: Discussionmentioning

confidence: 88%

“…The role of elevated NAH and His levels in the lens in preventing cataracts could be explained by the general characteristic of imidazol‐containing compounds as good tissue buffering agents (Ogata, Konno & Silverstein 1998) and antioxidants (Babizhayev 1989; Wade & Tucker 1998). The buffering capacities recorded in this study were comparable with those previously measured in the muscle of a variety of fish species (Castellini & Somero 1981; Ogata 2002).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Histidine nutrition and genotype affect cataract development in Atlantic salmon, Salmo salar L.

Breck¹,

Bjerkås

Campbell

et al. 2005

Journal of Fish Diseases

123

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The aim of this study was to investigate effects of dietary levels of histidine (His) and iron (Fe) on cataract development in two strains of Atlantic salmon monitored through parr-smolt transformation. Three experimental diets were fed: (i) a control diet (CD) with 110 mg kg )1 Fe and 11.7 g kg )1 His; (ii) CD supplemented with crystalline His to a level of 18 g kg )1 (HD); and (iii) HD with added iron up to 220 mg kg )1 (HID). A cross-over design, with two feeding periods was used. A 6-week freshwater (FW) period was followed by a 20-week period, of which the first three were in FW and the following 17 weeks in sea water (SW). Fish were sampled for weighing, cataract assessment and tissue analysis at five time points. Cataracts developed in all groups in SW, but scores were lower in those fed high His diets (P < 0.05). This effect was most pronounced when HD or HID was given in SW, but was also observed when these diets were given in FW only. Histidine supplementation had a positive effect on growth performance and feed conversion ratio (P < 0.05), whereas this did not occur when iron was added. Groups fed HD or HID had higher lens levels of His and N-acetyl histidine (NAH), the latter showing a marked increase post-smoltification (P < 0.05). The HD or HID groups also showed higher muscle concentrations of the His dipeptide anserine (P < 0.05). There was a strong genetic influence on cataract development in the CD groups (P < 0.001), not associated with tissue levels of His or NAH. The role of His and Hisrelated compounds in cataractogenesis is discussed in relation to tissue buffering, osmoregulation and antioxidation.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Histidine nutrition and genotype affect cataract development in Atlantic salmon, Salmo salar L.

Breck¹,

Bjerkås

Campbell

et al. 2005

Journal of Fish Diseases

123

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“…Breck et al (2005a) found muscle anserine levels in salmon fed different histidine diets to range between 9.7 and 16.1 lmol/g, considerable higher than the levels found in halibut (0.3-1.8 lmol/g). The reduction in muscle non-essential amino acids following increased levels of imidazole compounds has been described in masu salmon (Oncorhynchus masou) as well as in yellowtail (Seriola quinqueradiata) by Ogata et al (1998). These authors suggested a physiological mechanism where white muscle specifically and selectively accumulates imidazole compounds and maintains the total amino acid pool by down-regulating the level of non-essential amino acids.…”

Section: Discussionmentioning

confidence: 98%

Effects of chronic and periodic exposures to ammonia on the eye health in juvenile Atlantic halibut (Hippoglossus hippoglossus)

Liakonis

Waagbø²,

Foss

et al. 2011

Fish Physiol Biochem

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The effects of chronic and periodic peaks of un-ionised ammonia (UIA-N) exposure on eye health and cataract formation in juvenile Atlantic halibut, Hippoglossus hippoglossus, were examined. Fish with mean initial weight 51.7 g (SD 13.2) were exposed to five treatments consisting of control group and three groups (ChronicLow, ChronicMedium and ChronicHigh,) chronically exposed with UIA-N of 0.06, 0.12 to 0.17 mg/l, respectively, for 62 days at 11.9°C, pH 8.0 and salinity 34‰. Furthermore, a fifth group (HighPulse) was exposed to the same high levels as ChronicHigh for a short daily period (peak of 15 mg/l 30 min after exposure, 10 mg/l 1 h after exposure and 1.2 mg/l 3 h after exposure). In the subsequent period of the experimental study (from day 63 until day 100), no ammonia was added to the water. Mean weights were significantly lower in groups exposed to chronically high ambient ammonia concentrations compared to corresponding control group throughout the experimental period. The sampled fish exhibited signs of mild cataract formation, although the results showed no clear evidence that the ammonia treatments contributed to differences. Minor differences were found in measured muscle free amino acids, which could be used to explain potential changes in buffering capacity. The eye histidine status differed significantly at day 62, and osmotic differences in the eye lenses (measured as differences in N-acetyl histidine) were found in all group exposed to chronic levels of ammonia.

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“…Biotic and abiotic factors affect contents and profiles of histidine-related compounds in white muscle (Abe, 1987;Abe & Ohmama, 1987). Ogata et al (1998) reported that smolts of masu salmon Oncorhynchus masou (Brevoort) always had higher anserine levels in white muscle than parr, and consequently that the smolts had significantly higher muscle buffering capacities than the parr.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, buffering capacity of white muscle (pH 6·0-7·5) was determined to evaluate the effectiveness of dietary supplementation of histidine, -alanine and thyroxine. The increase of histidine and its derived dipeptide level in muscle might enhance the muscle buffering capacity in anaerobic swimming and antioxidative activity in aerobic swimming (Ogata & Murai, 1994;Ogata et al, 1998), and improve the taste of farmed fishes (Suyama & Shimizu, 1982).…”

Section: Introductionmentioning

confidence: 99%

Muscle buffering capacity of yellowtail fed diets supplemented with crystalline histidine

Ogata

2002

Journal of Fish Biology

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Juvenile yellowtail Seriola quinqueradiata (initial body mass of 22 g) were fed either a commercial diet (control, diet 1) or diets supplemented with histidine (diet 2), histidine+ -alanine (diet 3), or histidine+ -alanine+thyroxine (diet 4), for 6 weeks. The dietary treatment did not affect the final body mass. Free histidine levels of white muscle in the fish fed the diets supplemented with histidine (diets 2-4) were significantly higher (>62 mmol kg 1 of wet tissue) than that of control group (42 mmol kg 1 of wet tissue). Dietary supplementation of -alanine (diet 3) or -alanine+thyroxine (diet 4) failed to increase muscle anserine ( -alanyl---histidine) level. Muscle buffering capacity of the range from pH 6·0 to 7·5 of the fish fed the diets 2-4 (41·6-42·7 mmol NaOH pH 1 kg muscle 1 ) reflected the increase of muscle histidine level, having slightly but significantly intensified compared to control fish (36·6 mmol NaOH pH 1 kg muscle 1 ). Most of the free amino acids other than histidine were significantly lower in the fish fed the diets 2-4 than in control fish. Thus, crystalline histidine supplemented to diets appears to be deposited in muscular tissue, and consequently enhance muscle buffering capacity in this species.

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Muscular buffering capacity of the parr and smolts in Oncorhynchus masou

Cited by 17 publications

References 18 publications

Histidine nutrition and genotype affect cataract development in Atlantic salmon, Salmo salar L.

Histidine nutrition and genotype affect cataract development in Atlantic salmon, Salmo salar L.

Effects of chronic and periodic exposures to ammonia on the eye health in juvenile Atlantic halibut (Hippoglossus hippoglossus)

Muscle buffering capacity of yellowtail fed diets supplemented with crystalline histidine

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