Influence of Vitamins A and C on Corticosterone and Carbohydrate Metabolism in Chickens ,

Nockels, C. F.; López, G. Suárez; Phillips, Robert W.

doi:10.3382/ps.0521261

Cited by 24 publications

(8 citation statements)

References 13 publications

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“…Some research using poultry also showed that heat stress decreased the plasma AsA concentration (Nockels et al, 1973;Coates, 1984). Additionally, supplemental vitamin C has been reported to improve feed intake and growth rates in heat-stressed birds (McKee and Harrison, 1995;Sahin et al, 2003).…”

Section: Introductionmentioning

confidence: 95%

Heat stress decreases plasma vitamin C concentration in lactating cows

et al. 2006

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Section: Introductionmentioning

confidence: 95%

Heat stress decreases plasma vitamin C concentration in lactating cows

et al. 2006

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“…(Warriss et al, 1988;Tinker et al, 1986). 비타민과 포도당대사에 관한 연구는 1970년대 보고된바 있으며, 닭에서 비타민 A가 결핍 되면 간에서 glycogen이 증가하여 비타민이 포도당대사 조 절에 관여할 수 있음을 보여주었다 (Nockels et al, 1973). 포 도당 운송체인 GLUT는 세포의 포도당 흡수 및 포도당 항상 성 유지에 중요한 기능을 하며, 닭에서 GLUT2는 간과 신장 에서 주로 발현되고, GLUT8은 대부분의 세포조직에서 발현 된다 (Kono et al, 2005).…”

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Effects of Lycopene on the Expression of Lipid Metabolism, Glucose Transport and Pro-Inflammatory Related Genes in Chickens

Jang¹,

Moon

2015

Korean Journal of Poultry Science

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The present study aimed to investigate the effects of lycopene on hepatic metabolic-and immune-related gene expression in laying hens. A total of 48 25-week-old White Leghorn hens were randomly allocated into four groups consisting of four replicates of three birds: control (basal diet), T1 (basal diet + 10 mg/kg of tomato powder-containing lycopene), T2 (basal diet + 10 mg/kg of micelles of tomato powder-containing lycopene), and T3 (basal diet + 10 mg/kg of purified lycopene). Chickens were fed ad libitum for 5 weeks, and then total RNA was extracted from the livers for quantitative RT-PCR analysis. Peroxisome proliferator-activated receptor ɣ (PPARɣ) expression was decreased in the liver of chickens after lycopene supplementation (P<0.05). Micellar lycopene supplementation decreased the expression of PPARɣ target genes including fatty acid binding protein 4 (FABP4) and fatty acids synthase (FASN) in the T2 group (P<0.05). Sterol regulatory element-binding protein 2 (SREBP2) and C/EBP-ɑ were also downregulated in hens fed with micellar lycopene (P<0.05). Glucose transporter 8 (GLUT-8) was upregulated in the T2 and T3 groups (P<0.05). However, the expression of carnitine palmitoyltransferase 1 (CPT-1) was not changed by lycopene supplementation. Pro-inflammatory cytokines such as tumor necrosis factor ɑ (TNF-ɑ) and interleukin 6 (IL-6) were downregulated by lycopene supplementation (P<0.05). These data suggest that the type of lycopene supplementation is critical and that micelles of tomato powder-containing lycopene may play an important role in the modulation of lipid metabolism and immunity in chickens.

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“…During stress the plasma concentration of AA is depleted (Parek and Kendler, 1965;Nockels et al, 1973) and corticosterone is released in large amounts. High concentrations of corticosterone are known to be cytotoxic and suppress the immune functions.…”

Section: Introductionmentioning

confidence: 99%