Evidence map›Paper›PMID 34983484›Full record

ArticleBMC complementary medicine and therapies2022

Trifolium pratense ethanolic extract alters the gut microbiota composition and regulates serum lipid profile in the ovariectomized rats.

Yixian Quah, Na-Hye Park, Eon-Bee Lee, Ki-Ja Lee, Jireh Chan Yi-Le, Md Sekendar Ali, Seung-Hee Jang, Min-Jeong Kim, Seung-Jin Lee, Seung-Chun Park

Open access · goldAbstract read
In one paragraph

Article in BMC complementary medicine and therapies, 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
1.6field-weighted citation impact, top 18% 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, 18 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

10 authors at 5 institutions in 3 countries.

Yixian QuahCollege of Veterinary Medicine, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea.
Na-Hye ParkLaboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, Republic of Korea.
Eon-Bee LeeCollege of Veterinary Medicine, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea.
Ki-Ja LeeCollege of Veterinary Medicine, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea.
Jireh Chan Yi-LeDepartment of Finance, Faculty of Business and Finance, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia.
Md Sekendar AliCollege of Veterinary Medicine, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea.
Seung-Hee JangTeazen Co. Ltd., Gyegok-myeon, Haenam-gun, Jeollanam-do, 59017, Republic of Korea.
Min-Jeong KimTeazen Co. Ltd., Gyegok-myeon, Haenam-gun, Jeollanam-do, 59017, Republic of Korea.
Seung-Jin LeeReproductive and Development Toxicology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea. lee.seungjin@kitox.re.kr.
Seung-Chun ParkCollege of Veterinary Medicine, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea. parksch@knu.ac.kr.
Kyungpook National University · KRDaegu-Gyeongbuk Medical Innovation Foundation · KRInternational Islamic University Chittagong · BDKorea Institute of Toxicology · KRUniversiti Tunku Abdul Rahman · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTrifolium pratense (red clover) ethanolic extract (TPEE) has been used as a popular over-the-counter remedy for the management of menopausal symptoms. Prolonged consumption of herbal extract has been shown to regulate the composition of gut microbiota. This study was designed to elucidate the influence of TPEE on the gut microbiota composition in the ovariectomized (OVX) rats.

methodsOVX rats were treated with TPEE at 125, 250, 500 mg/kg/day, or controls (pomegranate extract, 500 mg/kg/day; estradiol, 25 μg/kg/day) for 12 weeks. Gut microbiota analysis was conducted by extracting the microbial DNA from fecal samples and microbiome taxonomic profiling was carried out by using next-generation sequencing. The levels of serum biomarkers were analyzed using enzyme-linked immunosorbent assay (ELISA) kit. The prediction of functional biomarker of microbiota was performed using PICRUSt to investigate the potential pathways associated with gut health and serum lipid profile regulation. To study the correlation between gut microbiota composition and serum lipid levels, Spearman's correlation coefficients were defined and analyzed. Additionally, gas chromatography-mass spectrometry analysis was conducted to uncover additional physiologically active ingredients.

resultsTPEE-treated OVX rats showed significant reduction in serum triglycerides (TG), total cholesterols (TCHOL), and LDL/VLDL levels but increase in HDL level. The alteration in the pathways involve in metabolism was the most common among the other KEGG categories. Particularly, TPEE also significantly reduced the relative abundance of sequences read associated with inflammatory bowel disease (IBD) and the peroxisome proliferator-activated receptor (PPAR) signalling pathway. TPEE intervention was seen to reduce the Firmicutes to Bacteroidetes (F/B) ratio in the OVX rats, denoting a reduction in microbial dysbiosis in the OVX rats. Correlation analysis at the phylum level revealed that Bacteriodetes and Proteobacteria were strongly correlated with serum TG, TCHOL and HDL levels. At the species level, Bifidobacterium pseudolongum group was seen to positively correlate with serum HDL level and negatively correlated with serum AST, ALT, LDL/VLDL, TCHOL, and TG levels.

conclusionsTPEE treatment showed therapeutic benefits by improving the intestinal microbiota composition which strongly correlated with the serum lipid and cholesterol levels in the OVX rats.

Indexed as

OvariectomyAnimalsGastrointestinal MicrobiomeLipidsPlant ExtractsRatsRats, Sprague-DawleyTrifoliumLipidsPlant ExtractsDysbiosisGut microbiotaHypocholesterolemic effectMenopauseTrifolium pratense

Identifiers

PMID34983484
PMCPMC8725312
OpenAlexW4205422166

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.