Evidence map›Paper›PMID 34237916›Full record

ArticleAnimal bioscience2022

Effects of starvation-induced negative energy balance on endoplasmic reticulum stress in the liver of cows.

Md Aminul Islam, Shuya Adachi, Yuichiroh Shiiba, Ken-Ichi Takeda, Satoshi Haga, Shinichi Yonekura

Open access · goldAbstract read
In one paragraph

Article in Animal bioscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

6 citing papers in PubMed, 11 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Md Aminul IslamDepartment of Biomedical Engineering, Graduate School of Medicine, Science and Technology, Shinshu University, Kamiina, Nagano 399-4598, Japan.
Shuya AdachiDepartment of Biomedical Engineering, Graduate School of Science and Technology, Shinshu University, Kamiina, Nagano 399- 4598, Japan.
Yuichiroh ShiibaFaculty of Agriculture, Shinshu University, Kamiina, Nagano 399-4598, Japan.
Ken-Ichi TakedaFaculty of Agriculture, Shinshu University, Kamiina, Nagano 399-4598, Japan.
Satoshi HagaGrazing Animal Unit, Division of Grassland Farming, Institute of Livestock and Grassland Science, NARO, Nasushiobara, Tochigi 329-2793, Japan.
Shinichi YonekuraDepartment of Biomedical Engineering, Graduate School of Medicine, Science and Technology, Shinshu University, Kamiina, Nagano 399-4598, Japan.
Shinshu University · JPInstitute of Livestock and Grassland Science · JP

Funding

Japan Society for the Promotion of Science JP20H03126
6 · The paper itself

Abstract

objectiveEndoplasmic reticulum (ER) stress engages the unfolded protein response (UPR) that serves as an important mechanism for modulating hepatic fatty acid oxidation and lipogenesis. Chronic fasting in mice induced the UPR activation to regulate lipid metabolism. However, there is no direct evidence of whether negative energy balance (NEB) induces ER stress in the liver of cows. This study aimed to elucidate the relationship between the NEB attributed to feed deprivation and ER stress in bovine hepatocytes.

methodsBlood samples and liver biopsy tissues were collected from 6 non-lactating cows before and after their starvation for 48 h. The blood non-esterified fatty acids (NEFA), β-hydroxybutyric acid (BHBA) and glucose level were analyzed. Real-time quantitative polymerase chain reaction and Western blotting were used to explore the regulation of genes associated with UPR and lipid metabolism.

resultsThe starvation increased the plasma BHBA and NEFA levels and decreased the glucose level. Additionally, the starvation caused significant increases in the mRNA expression level of spliced X-box binding protein 1 (XBP1s) and the protein level of phosphorylated inositol-requiring kinase 1 alpha (p-IRE1α; an upstream protein of XBP1) in the liver. The mRNA expression levels of peroxisome proliferator-activated receptor alpha and its target fatty acid oxidation- and ketogenesis-related genes were significantly upregulated by the starvation-mediated NEB. Furthermore, we found that the mRNA expression levels of lipogenic genes were not significantly changed after starvation.

conclusionThese findings suggest that in the initial stage of NEB in dairy cows, the liver coordinates an adaptive response by activating the IRE1 arm of the UPR to enhance ketogenesis, thereby avoiding a fatty liver status.

Indexed as

Dairy CowEndoplasmic Reticulum StressFastingLiverNegative Energy Balance

Identifiers

PMID34237916
PMCPMC8738926
OpenAlexW3174293999

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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.