Evidence map›Paper›PMID 25410747›Full record

ArticleEuropean journal of nutrition2015

Dietary betaine supplementation to gestational sows enhances hippocampal IGF2 expression in newborn piglets with modified DNA methylation of the differentially methylated regions.

Xi Li, Qinwei Sun, Xian Li, Demin Cai, Shiyan Sui, Yimin Jia, Haogang Song, Ruqian Zhao

Abstract read
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In one paragraph

Article in European journal of nutrition, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
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  5. How Does Protein Nutrition Affect the Epigenetic Changes in Pig? A Review.Animals : an open access journal from MDPI · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Xi LiKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Qinwei SunKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Xian LiKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Demin CaiKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Shiyan SuiKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Yimin JiaKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Haogang SongKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
Ruqian ZhaoKey Laboratory of Animal Physiology and Biochemistry, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China. zhao.ruqian@gmail.com.
Nanjing Agricultural University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe adequate supply of methyl donors is critical for the normal development of brain. The purpose of the present study was to investigate the effects of maternal betaine supplementation on hippocampal gene expression in neonatal piglets and to explore the possible mechanisms.

methodsGestational sows were fed control or betaine-supplemented (3 g/kg) diets throughout the pregnancy. Immediately after birth, male piglets were killed, and the hippocampus was dissected for analyses. The mRNA abundance was determined by reverse transcription real-time polymerase chain reaction. Protein content was measured by Western blot, and DNA methylation was detected by methylated DNA immunoprecipitation assay.

resultsPrenatal betaine supplementation did not alter the body weight or the hippocampus weight, but increased the hippocampal DNA content as well as the mRNA expression of proliferation-related genes. Prenatal betaine supplementation increased serum level of methionine (P < 0.05) and up-regulated (P < 0.05) the mRNA and protein expression of betaine-homocysteine methyltransferase, glycine N-methyltransferase and DNA methyltransferase 1 in the neonatal hippocampus. Hippocampal expression of insulin growth factor II (IGF2) and its receptors IGF1R and IGF2R were all significantly up-regulated (P < 0.05) in betaine-treated group, together with a significant activation (P < 0.01) of the downstream extracellular signal-regulated kinase 1/2. Moreover, the differentially methylated region (DMR) 1 and 2 on IGF2 locus was found to be hypermethylated (P < 0.05) in the hippocampus of betaine-treated piglets.

conclusionsThese results indicate that maternal betaine supplementation enhances betaine/methionine metabolism and DNA methyltransferase expression, causes hypermethylation of DMR on IGF2 gene, which was associated with augmented expression of IGF2 and cell proliferation/anti-apoptotic markers in the hippocampus of neonatal piglets.

Indexed as

Dietary SupplementsAnimalsAnimals, NewbornBetaineDNA MethylationFemaleGene ExpressionGenetic LociHippocampusInsulin-Like Growth Factor IIMethionineMitogen-Activated Protein Kinase 3PregnancyPromoter Regions, GeneticRNA, MessengerSwineBetaineInsulin-Like Growth Factor IIMethionineMitogen-Activated Protein Kinase 3RNA, MessengerBetaineCell proliferationDNA methylationHippocampusIGF2Piglets

Identifiers

PMID25410747
OpenAlexW2017361477

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.