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Kang D, Shin D, Choe H, Hwang D, Bugenyi AW, Na CS, Lee HK, Heo J, Shim K. Transcriptome-wide analysis reveals gluten-induced suppression of
small intestine development in young chickens. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2022; 64:752-769. [PMID: 35969701 PMCID: PMC9353357 DOI: 10.5187/jast.2022.e42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 04/15/2022] [Accepted: 05/22/2022] [Indexed: 11/20/2022]
Abstract
Wheat gluten is an increasingly common ingredient in poultry diets but its impact
on the small intestine in chicken is not fully understood. This study aimed to
identify effects of high-gluten diets on chicken small intestines and the
variation of their associated transcriptional responses by age. A total of 120
broilers (Ross Strain) were used to perform two animal experiments consisting of
two gluten inclusion levels (0% or 25%) by bird’s age (1
week or 4 weeks). Transcriptomics and histochemical techniques were employed to
study the effect of gluten on their duodenal mucosa using randomly selected 12
broilers (3 chicks per group). A reduction in feed intake and body weight gain
was found in the broilers fed a high-gluten containing diet at both ages.
Histochemical photomicrographs showed a reduced villus height to crypt depth
ratio in the duodenum of gluten-fed broilers at 1 week. We found mainly a
significant effect on the gene expression of duodenal mucosa in gluten-fed
broilers at 1 week (289 differentially expressed genes [DEGs]). Pathway analyses
revealed that the significant DEGs were mainly involved in ribosome, oxidative
phosphorylation, and peroxisome proliferator-activated receptor (PPAR) signaling
pathways. These pathways are involved in ribosome protein biogenesis, oxidative
phosphorylation and fatty acid metabolism, respectively. Our results suggest a
pattern of differential gene expression in these pathways that can be linked to
chronic inflammation, suppression of cell proliferation, cell cycle arrest and
apoptosis. And via such a mode of action, high-gluten inclusion levels in
poultry diets could lead to the observed retardation of villi development in the
duodenal mucosa of young broiler chicken.
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Affiliation(s)
- Darae Kang
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
| | - Donghyun Shin
- Department of Agricultural Convergence
Technology, Jeonbuk National University, Jeonju 54896,
Korea
| | - Hosung Choe
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
| | - Doyon Hwang
- Institute for Animal Products Quality
Evaluation, Sejong 339011, Korea
| | - Andrew Wange Bugenyi
- Department of Agricultural Convergence
Technology, Jeonbuk National University, Jeonju 54896,
Korea
- National Agricultural Research
Organization, Entebbe 295, Uganda
| | - Chong-Sam Na
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
| | - Hak-Kyo Lee
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
| | - Jaeyoung Heo
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
- Corresponding author: Jaeyoung Heo,
Department of Animal Biotechnology, Jeonbuk National University, Jeonju 54896,
Korea. Tel: +82-63-270-2549, E-mail:
| | - Kwanseob Shim
- Department of Animal Biotechnology,
Jeonbuk National University, Jeonju 54896, Korea
- Corresponding author: Kwanseob Shim,
Department of Animal Biotechnology, Jeonbuk National University, Jeonju 54896,
Korea. Tel: +82-63-270-2609, E-mail:
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Huynh H, Servant N, Chalifour LE. Ubiquinol–cytochrome-c reductase 7.2 kDa protein of mitochondrial complex III is steroid-responsive and increases in cardiac hypertrophy and hypertension. Can J Physiol Pharmacol 2007; 85:986-96. [DOI: 10.1139/y07-086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Women and men do not respond identically to cardiac insults; premenopausal women are somewhat protected from cardiovascular disease. Our objective was to isolate and characterize hormone-responsive genes in the heart. Differential display identified an estrogen-inducible fragment that was found to encode the ubiquinol–cytochrome-c reductase (UCCR) 7.2 kDa protein of the mitochondrial respiratory complex III. We found UCCR7.2 mRNA to be highly expressed in the heart, and this expression increased in hearts of 4-, 10-, and 28-week-old spontaneously hypertensive rats (SHR) compared with normotensive Wistar–Kyoto rats. Oral hydralazine treatment to reduce hypertension reduced SHR UCCR7.2 expression. Cardiac UCCR7.2 mRNA expression was also increased significantly after a 5/6 nephrectomy compared with mock surgery. Cardiac expression after ovariectomy was 50% that of intact rats. Supplementation of ovariectomized rats with estrogen had no effect, whereas progesterone increased cardiac expression, although not to intact levels. No change in cardiac UCCR7.2 expression was found when intact rats were treated with either tamoxifen or ICI 182780. Thus, UCCR7.2 expression is reduced in the absence of ovarian hormones, but is not directly regulated by estrogen in the heart. We conclude that UCCR7.2 is a steroid hormone-responsive gene in the heart, with expression increased in cardiac hypertrophy and in response to hypertension.
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Affiliation(s)
- Hung Huynh
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis - Jewish General Hospital, 3755 chemin Côte Sainte Catherine, Montréal, QC H3T 1E2, Canada
- Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada
- Bank of Montreal Research Center for the Study of Heart Disease in Women, Sir Mortimer B. Davis - Jewish General Hospital, Montréal, QC H3T 1E2, Canada
| | - Nicolas Servant
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis - Jewish General Hospital, 3755 chemin Côte Sainte Catherine, Montréal, QC H3T 1E2, Canada
- Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada
- Bank of Montreal Research Center for the Study of Heart Disease in Women, Sir Mortimer B. Davis - Jewish General Hospital, Montréal, QC H3T 1E2, Canada
| | - Lorraine E. Chalifour
- Lady Davis Institute for Medical Research, Sir Mortimer B. Davis - Jewish General Hospital, 3755 chemin Côte Sainte Catherine, Montréal, QC H3T 1E2, Canada
- Division of Experimental Medicine, Department of Medicine, McGill University, Montréal, QC H3A 1A3, Canada
- Bank of Montreal Research Center for the Study of Heart Disease in Women, Sir Mortimer B. Davis - Jewish General Hospital, Montréal, QC H3T 1E2, Canada
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