Dataset Information

Dynamic Changes in Serum Metabolomic Profiles of Growing Pigs Induced by Intravenous Infusion of Sodium Butyrate.

ABSTRACT: This study aimed to explore the dynamic changes in metabolite profiles and metabolism pathways in the serum of growing pigs by intravenous infusion of sodium butyrate (SB). Fourteen crossbred growing barrows (BW = 23.70 ± 1.29 kg) fitted with jugular cannula were randomly allocated to the SB and control (Con) groups, each group consisted of seven replicates (pens), with one pig per pen. At 9:00 of each day during the experimental period, pigs in the SB group were infused with 10 mL of SB (200 mmol/L, pH 7.4, 37 °C) via precaval vein, while the Con group was treated with the same volume of physiological saline. On day 4, the blood of each pig was collected at 0, 30, 60, and 120 min after the intravenous infusion. Metabolites in the serum were detected by gas chromatograph-mass spectrometry analysis. Pathway analysis of metabolomic profiles showed that the differential metabolites mainly enriched in amino acid metabolism, lipid-related metabolism, and the tricarboxylic acid (TCA) cycle. More importantly, the relative concentrations of all eight essential amino acids, five non-essential amino acids, and two amino acid derivatives were decreased by the parenteral SB. In addition, SB significantly increased the relative concentrations of eicosanoic acid and octadecanoic acid and decreased the relative concentration of glycerol-3-phosphate at 0 min (three days after intravenous infusion of SB), which suggests that parenteral SB may increase stearates mobilization and decrease the biosynthesis of stearates. In conclusion, intravenous infusion of SB may induce more amino acids to synthesize proteins and affect fat metabolism through increasing fat mobilization and decreasing the biosynthesis of stearates. However, a further study is needed to understand the mechanism of extensive metabolic pathway changes induced by parenteral SB.

SUBMITTER: Wang H

PROVIDER: S-EPMC7023161 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Dynamic Changes in Serum Metabolomic Profiles of Growing Pigs Induced by Intravenous Infusion of Sodium Butyrate.

Wang Hongyu H Ren Erdu E Xiang Xiaoe X Su Yong Y Zhu Weiyun W

Metabolites 20200101 1

This study aimed to explore the dynamic changes in metabolite profiles and metabolism pathways in the serum of growing pigs by intravenous infusion of sodium butyrate (SB). Fourteen crossbred growing barrows (BW = 23.70 ± 1.29 kg) fitted with jugular cannula were randomly allocated to the SB and control (Con) groups, each group consisted of seven replicates (pens), with one pig per pen. At 9:00 of each day during the experimental period, pigs in the SB group were infused with 10 mL of SB (200 mm ...[more]

PMID: 31906303

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Project description:Butyrate has a central function in the regulation of energy metabolism as a metabolite of bacterial fermentation. However, information on the direct impact of butyrate on peripheral organs or tissues is very limited, especially for muscle and adipose tissues. Therefore, this study evaluated the effects of intravenous sodium butyrate (SB) administration on the transcriptome of muscle and adipose tissue of pigs. Twelve crossbred barrows (Duroc × Landrace × Large White, 60 days of age) were fitted with a medical polyethylene cannula via internal jugular vein and were daily infused with 10 ml SB (200 mmol/l) or the same volume of physiological saline. After a 7-day experimental period, all pigs were slaughtered, and the longissimus dorsi muscle and dorsal subcutaneous adipose tissue were collected for holistic transcriptomic analysis. In muscle tissue, the expression of 12 oxidative phosphorylation related genes and seven glycolysis related genes were downregulated. Furthermore, the mRNA expression of fatty acid synthase (FASN) and stearyl coenzyme A desaturase (SCD) were significantly upregulated by SB treatment. This indicates a decrease in oxidative phosphorylation and glucose catabolism, and an increase in fat synthesis. In adipose tissue, the expressions of seven oxidative phosphorylation-related genes were downregulated, while nine glucose metabolism related genes were upregulated. Moreover, the mRNA expressions of FASN and peroxisome proliferator-activated receptor gamma (PPARγ) were upregulated, while fatty acid binding protein 3 (FABP3) and acyl-CoA synthetase long-chain family member 1 (ACSL1) were downregulated in the SB group. This indicates a decrease in oxidative phosphorylation and an increase in glucose metabolism and fat synthesis. The results suggest that short-term intravenous SB infusion can modulate muscle and adipose tissue metabolism at the transcriptional level by decreasing both oxidative phosphorylation and fat synthesis. In addition, intravenous SB decreases the glucose catabolism in muscle tissue and increases the glucose catabolism in adipose tissue. This suggests that systemic butyrate may display discriminative metabolic regulation in different tissues of barrows.

Project description:The incidence of Alzheimer's disease (AD) increases with age and is becoming a significant cause of worldwide morbidity and mortality. However, the metabolic perturbation behind the onset of AD remains unclear. In this study, we performed metabolite profiling in both brain (n?=?109) and matching serum samples (n?=?566) to identify differentially expressed metabolites and metabolic pathways associated with neuropathology and cognitive performance and to identify individuals at high risk of developing cognitive impairment. The abundances of 6 metabolites, glycolithocholate (GLCA), petroselinic acid, linoleic acid, myristic acid, palmitic acid, palmitoleic acid and the deoxycholate/cholate (DCA/CA) ratio, along with the dysregulation scores of 3 metabolic pathways, primary bile acid biosynthesis, fatty acid biosynthesis, and biosynthesis of unsaturated fatty acids showed significant differences across both brain and serum diagnostic groups (P-value?<?0.05). Significant associations were observed between the levels of differential metabolites/pathways and cognitive performance, neurofibrillary tangles, and neuritic plaque burden. Metabolites abundances and personalized metabolic pathways scores were used to derive machine learning models, respectively, that could be used to differentiate cognitively impaired persons from those without cognitive impairment (median area under the receiver operating characteristic curve (AUC)?=?0.772 for the metabolite level model; median AUC?=?0.731 for the pathway level model). Utilizing these two models on the entire baseline control group, we identified those who experienced cognitive decline in the later years (AUC?=?0.804, sensitivity?=?0.722, specificity?=?0.749 for the metabolite level model; AUC?=?0.778, sensitivity?=?0.633, specificity?=?0.825 for the pathway level model) and demonstrated their pre-AD onset prediction potentials. Our study provides a proof-of-concept that it is possible to discriminate antecedent cognitive impairment in older adults before the onset of overt clinical symptoms using metabolomics. Our findings, if validated in future studies, could enable the earlier detection and intervention of cognitive impairment that may halt its progression.

Dataset Information

Dynamic Changes in Serum Metabolomic Profiles of Growing Pigs Induced by Intravenous Infusion of Sodium Butyrate.

Publications

Dynamic Changes in Serum Metabolomic Profiles of Growing Pigs Induced by Intravenous Infusion of Sodium Butyrate.

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