scholarly journals Interactive effects of increased intake of saturated fat and cholesterol on atherosclerosis in the Japanese quail (Coturnix japonica)

1998 ◽  
Vol 80 (1) ◽  
pp. 89-100 ◽  
Author(s):  
Yvonne V. Yuan ◽  
David D. Kitts ◽  
David V. Godin
Keyword(s):  
Japanese Quail ◽  
Lipid Composition ◽  
Beef Tallow ◽  
Saturated Fat ◽  
Plaque Formation ◽  
Coturnix Japonica ◽  
Aortic Tissue ◽  
Oxide Content ◽  
Aortic Plaque ◽  
Tissue Cholesterol

Increasing the energy value of diets with dietary fat, particularly fats rich in saturated fatty acids, can result in the elevation of plasma total and lipoprotein cholesterol. In the present study, experimental diets were designed to examine the effects of increasing the energy content of diets with a saturated fat source and cholesterol in a non-purified diet on hyperlipoproteinaemia and aortic plaque composition in the atherosclerosis-susceptible Japanese quail (Coturnix japonica) model of human atherosclerosis. Commercial poultry diets containing two levels (i.e. 60 or 120 g/kg) of beef tallow as the primary source of saturated fat were balanced for endogenous cholesterol or supplemented with cholesterol (i.e. 0·5 or 5·0 g/kg) and fed to quail for 9 weeks to examine the effects on whole plasma, lipoprotein and aortic plaque lipid composition in relation to aortic plaque formation. Hypercholesterolaemia (P<0·001) was confirmed in birds fed on high-cholesterol (HC) diets only. An interaction (P=0·05) between dietary cholesterol and fat intake level was observed for plasma triacylglycerols (TG) and was specific to changes observed in VLDL composition. Diet-induced changes in lipoprotein total cholesterol, TG and phospholipid composition were greatest in the portomicron and VLDL fractions in birds fed on atherogenic diets. Hyperlipoproteinaemia induced by the 60 g/kg added beef tallow–HC diet resulted in significant (P<0·001) aortic plaque deposition, which was further enhanced in birds fed on the 120 g/kg beef tallow–HC diet. Quail fed on 120 g/kg beef tallow-HC diets exhibited the most severe aortic plaque formation, with marked increases in aortic tissue cholesterol content and quantifiable amounts of several cholesterol oxides (5,6α-epoxy-5α-cholesterol, 7β-hydroxycholesterol, cholestanetriol, 7-ketocholesterol and 25-hydroxycholesterol). In summary, hyperlipoproteinaemia associated with HC diets with a greater proportion of energy from saturated fat produced a combined effect in altering plasma and lipoprotein lipid composition as well as aortic tissue cholesterol and cholesterol oxide content in the Japanese quail.

Japanese Quail (Coturnix japonica)

2020 ◽  
Author(s):  
Philip J.K. McGowan ◽  
Guy M. Kirwan
Keyword(s):  
Japanese Quail ◽  
Coturnix Japonica

scholarly journals Fos expression in the medial preoptic area and nucleus accumbens of female Japanese quail (Coturnix japonica) after maternal induction and interaction with chicks

2021 ◽  
Vol 234 ◽  
pp. 113357
Author(s):  
Joseph S. Lonstein ◽  
Thierry D. Charlier ◽  
Jodi L. Pawluski ◽  
Nadege Aigueperse ◽  
Maryse Meurisse ◽  
...  
Keyword(s):  
Nucleus Accumbens ◽  
Japanese Quail ◽  
Preoptic Area ◽  
Medial Preoptic Area ◽  
Coturnix Japonica ◽  
Fos Expression

scholarly journals Developmental changes in gonadotropin-inhibitory hormone in the Japanese quail (Coturnix japonica) hypothalamo-hypophysial system

2003 ◽  
Vol 178 (2) ◽  
pp. 311-318 ◽  
Author(s):  
T Ubuka ◽  
M Ueno ◽  
K Ukena ◽  
K Tsutsui
Keyword(s):  
Japanese Quail ◽  
Median Eminence ◽  
Anterior Pituitary ◽  
Coturnix Japonica ◽  
Developmental Changes ◽  
External Layer ◽  
Mature Peptide ◽  
Gonadotropin Release ◽  
Gonadotropin Inhibitory Hormone ◽  
Precursor Mrna

We previously isolated a novel dodecapeptide containing a C-terminal -Arg-Phe-NH(2) sequence, SIKPSAYLPLRF-NH(2) (RFamide peptide), from the Japanese quail (Coturnix japonica) brain. This novel quail peptide was shown to be located in neurons of the paraventricular nucleus (PVN) and their terminals in the median eminence (ME), and to decrease gonadotropin release from cultured anterior pituitary in adult birds. We therefore designated this peptide gonadotropin-inhibitory hormone (GnIH). Furthermore, a cDNA encoding the GnIH precursor polypeptide has been characterized. To understand the physiological roles of this peptide, in the present study we analyzed developmental changes in the expressions of GnIH precursor mRNA and the mature peptide GnIH during embryonic and posthatch ages in the quail diencephalon including the PVN and ME. GnIH precursor mRNA was expressed in the diencephalon on embryonic day 10 (E10) and showed a significant increase on E17, just before hatch. GnIH was also detected in the diencephalon on E10 and increased significantly around hatch. Subsequently, the diencephalic GnIH content decreased temporarily, and again increased progressively until adulthood. GnIH-like immunoreactive (GnIH-ir) neurons were localized in the PVN on E10, but GnIH-ir fibers did not extend to the ME. However, GnIH-ir neurons increased in the PVN on E17, just before hatch, and GnIH-ir fibers extended to the external layer of the ME, as in adulthood. These results suggest that GnIH begins its function around hatch and acts as a hypothalamic factor to regulate gonadotropin release in the bird.

Serum biochemical profiling in different varieties of Japanese quail, Coturnix coturnix japonica (Temminck and Schlegel, 1849)

2019 ◽  
Vol 28 (6) ◽  
pp. 1599-1607
Author(s):  
Kananbala Patra ◽  
Sujata Puspamitra ◽  
Aryadhara Das ◽  
Bandi K. Mallik ◽  
Prafulla K. Mohanty
Keyword(s):  
Japanese Quail ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Serum Biochemical
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