Évolution De La Teneur en Acides Nucléiques De La Musculature Épaxiale Au Cours De La Croissance Chez La Truite Arc-en-Ciel (Salmo Gairdnerii) ; Rôles Respectifs De La Multiplication Et Du Grandissement Cellulaires

Luquet, P.; Durand, G.; Hannequart, Geneviève

doi:10.1051/rnd:19700311

Cited by 19 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To our knowledge, there is no known mechanism to account for this pattern in mature skeletal muscle. A decrease in DNA content per cytoplasm was found in white and red muscle during early growth in carp (Koumans et al 1993(Koumans et al , 1994 and in white muscle of rainbow trout (Luquet and Durand 1970). Koumans et al (1993Koumans et al ( , 1994 proposed that this was a period of hyperplasia, where many myogenic cells with little cytoplasm fuse, followed by an increase in cytoplasm due to hypertrophic growth that led to a reduced DNA content per cytoplasm.…”

Section: Discussionmentioning

confidence: 97%

Nuclear DNA content variation associated with muscle fiber hypertrophic growth in fishes

Jiménez

Kinsey

2011

J Comp Physiol B

View full text Add to dashboard Cite

Muscle fiber hypertrophic growth can lead to an increase in the myonuclear domain (MND), leading to greater diffusion distances within the cytoplasmic volume that each nucleus services. We tested the hypothesis that hypertrophic growth in the white muscle of fishes was associated with increases in the mean DNA content of nuclei, which may be a strategy to offset increasing diffusion constraints. DAPI-stained chicken erythrocytes standards and image analysis were used to estimate nuclear DNA content in erythrocytes and muscle fibers from 17 fish species. Mean diploid (2C) values in fish erythrocytes ranged from 0.78 to 7.2 pg. Erythrocyte 2C values were used to determine ploidy level in muscle tissue of small and large size classes of each species. Within each species, mean muscle fiber diameter was greater in the large size class than the small size class, and MND was significantly greater in larger fibers for 11 of the 17 species. Nuclear DNA content per species in muscle ranged from 2 to 64C. Fiber-size dependent increases in ploidy were observed in nine species, which is consistent with our hypothesis and indicates that endoreduplication is occurring during fiber growth. However, two species exhibited significantly lower ploidy in the larger size class, and the mechanistic basis and potential advantage of this ploidy shift is unclear. These results suggest that increases in ploidy may be a common mechanism to compensate for increases in MND associated with fiber hypertrophy in fishes, although it is likely that other factors also affect ploidy changes that occur in muscle during animal growth.

show abstract

Section: Discussionmentioning

confidence: 97%

Nuclear DNA content variation associated with muscle fiber hypertrophic growth in fishes

Jiménez

Kinsey

2011

J Comp Physiol B

View full text Add to dashboard Cite

show abstract

“…Examination of the nucleic acid and protein contents of the white muscle of these juveniles provide complementary information on their white muscle status. As in the skeletal muscle of mammals (Young 1970), the DNA concentration of fish axial muscle changes during growth, in a non-linear way, when fish length (Love 1958) and muscle weight (Luquet and Durand 1970) increase. An early temperature of 13°C or 20°C does not change the white muscle DNA concentration of juveniles of 83-88 mm in length (Table 7), indicating that the mean DNA/ cytoplasm ratio of their white muscle is similar, in agreement with their similar mean WFD (Table 6); this is also confirmed by the equivalent DNA/protein ratio, another criterion of cell size (Cheek et al 1971).…”

Section: Muscle Growth Mechanisms Of Juvenile European Sea Bassmentioning

confidence: 99%

“…RNA, the organizer of protein synthesis, is present in variable quantities in the cell nucleus and cytoplasm. Its concentration in skeletal muscle changes during postnatal life, in fish (Luquet and Durand 1970) as in mammals (Young 1970). As fish growth is mainly accomplished through the synthesis of proteins, RNA measurement can be used to assess growth rate (Bulow 1970), although the RNA/DNA ratio is a more accurate index of metabolic activity, since this ratio is not affected by differences in cell number (Bulow 1970).…”

Section: Muscle Growth Mechanisms Of Juvenile European Sea Bassmentioning

confidence: 99%

Early thermal history significantly affects the seasonal hyperplastic process occurring in the myotomal white muscle of Dicentrarchus labrax juveniles

2006

View full text Add to dashboard Cite

The effect of early (embryonic and larval) thermal history on subsequent (juvenile) white muscle hyperplasia was studied in a teleost fish, the European sea bass (Dicentrarchus labrax L.). D. labrax, incubated and reared at constant temperatures of 13 degrees C, 15 degrees C or 20 degrees C from the embryonic stage of half epiboly up to 18-19 mm in total length, were transferred to ambient seawater temperature and reared for the subsequent 14 months on commercial feed. The somatic growth of juveniles was linked to annual variations of ambient seawater temperature and inversely related to early rearing temperature, so that, after 14 months, the juveniles originally reared at low temperatures had compensated for the growth retardation experienced during early life. The white muscle growth process of juveniles was quantified after two periods of growth opportunity at ambient seawater temperature (100 and 400 days post-transfer) as well as, in order to follow total-length-dependent effects of early temperature and to discriminate total-length-independent effects of early temperature, on juveniles from the three batches sampled at six successive equivalent total lengths (31-33, 84-88, 141-145, 166-172, 196-206 and 211-220 mm). Our data demonstrate the existence of a seasonal recruitment of new white muscle fibres when seawater temperature increases and of a shrinkage of the largest white muscle fibres during the winter months. The seasonal recruitment of new white muscle fibres occurring in juveniles is linked to their early rearing temperature. Juveniles originating from low temperatures have a higher and longer capacity to recruit new white muscle fibres when seawater temperature increases, supporting their better somatic growth. This finding is discussed in relation to the early (embryonic and larval) myogenic processes of the three populations and is related to their sex ratio.

show abstract

“…In all these studies reported no work was undertaken to understand the cellular responses of growth in fish. Although some data in this respect are available from other studies on the normal growth of fish (Luquet & Durand, 1970;Bulow, 1970Bulow, , 1971Greer-Walker, 1970, 1971Luquet & Hannequart, 1971;Haines, 1973;Schattenberg, 1973;Bulow et al, 1978. Adrenosterone (4-Androsten-3, 1 1, 17-trione) is a metabolic product of natural androgens in fish (Ozon, 1972) and has exhibited growth promotion ability when dissolved in ambient water (Katz et al, 1976) or given with the food (Matty & Lone, 1979).…”

Section: Introductionmentioning

confidence: 97%

Cellular effects of adrenosterone feeding to juvenile carp, Cyprinus carpio L., effect on liver, kidney, brain and muscle protein and nucleic acids

Lone

Matty

1982

Journal of Fish Biology

View full text Add to dashboard Cite

Different groups of juvenile common carp ( 3 4 g) were fed diets supplemented with adrenosterone at doses of 1.0,2.5 and 10.0 mg kg-1 for 60 days and the effect on food conversion efficiency and cellular growth responses of liver, kidney, brain and muscle were investigated. At the end of the hormone feeding phase an increase of 40-7596 was observed in food conversion efficiency. No change in hepato-somatic and viscero-somatic index was observed, but brain and kidney weights in relation to body weight was decreased compared with the controls. Variable changes ia protein, RNA/DNA, protein/RNA and protein/ DNA were seen in liver, kidney, brain and muscle. Feeding of the steroid for 60 days increased the water content of the muscle but ash contents ofthe muscle were decreased. No change in the total muscle lipids and total nitrogen content were observed. After the removal ofthe drug from the feed, some ofthe changes reported were ameliorated.

show abstract

Évolution De La Teneur en Acides Nucléiques De La Musculature Épaxiale Au Cours De La Croissance Chez La Truite Arc-en-Ciel (Salmo Gairdnerii) ; Rôles Respectifs De La Multiplication Et Du Grandissement Cellulaires

Cited by 19 publications

References 0 publications

Nuclear DNA content variation associated with muscle fiber hypertrophic growth in fishes

Nuclear DNA content variation associated with muscle fiber hypertrophic growth in fishes

Early thermal history significantly affects the seasonal hyperplastic process occurring in the myotomal white muscle of Dicentrarchus labrax juveniles

Cellular effects of adrenosterone feeding to juvenile carp, Cyprinus carpio L., effect on liver, kidney, brain and muscle protein and nucleic acids

Contact Info

Product

Resources

About