Evidence map›Paper›PMID 42072727›Full record

ArticleBiomolecules2026

Hepatocyte-Specific Deletion of Betaine-Homocysteine Methyltransferase Disrupts Methionine Metabolism and Promotes the Spontaneous Development of Hepatic Steatosis.

Ramachandran Rajamanickam, Sathish Kumar Perumal, Ramesh Bellamkonda, Sundararajan Mahalingam, Kurt W Fisher, Rolen Quadros, Channabasavaiah B Gurumurthy, Madan Kumar Arumugam, Karuna Rasineni, Kusum K Kharbanda

Abstract read
In one paragraph

Article in Biomolecules, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Ramachandran RajamanickamResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0002-3817-7704
Sathish Kumar PerumalResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0003-0151-521X
Ramesh BellamkondaResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0001-5356-350X
Sundararajan MahalingamResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0002-3944-7868
Kurt W FisherDepartment of Pathology, Microbiology and Immunology, University of Nebraska Medical Center, Omaha, NE 68198, USA.ORCID 0000-0002-8391-390X
Rolen QuadrosMouse Genome Engineering Core Facility, University of Nebraska Medical Center, Omaha, NE 68198, USA.
Channabasavaiah B GurumurthyMouse Genome Engineering Core Facility, University of Nebraska Medical Center, Omaha, NE 68198, USA.ORCID 0000-0002-8022-4033
Madan Kumar ArumugamResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0003-0567-7857
Karuna RasineniResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0002-9581-3957
Kusum K KharbandaResearch Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.ORCID 0000-0001-7759-8889

Funding

National Institute of Alcohol Abuse and Alcoholism AA030407-1531VA Office of Research and Development I01BX006064
6 · The paper itself

Abstract

Betaine-homocysteine methyltransferase (BHMT) is an enzyme involved in one-carbon metabolism and plays a crucial role in maintaining liver health. In this study, we investigated the impact of liver-specific deletion of BHMT on liver dysfunction using a mouse model. We generated BHMT floxed mice and bred them with albumin Cre to generate liver-specific BHMT knockout (BHMT LKO) mice. Liver tissues harvested from six-month-old chow-fed BHMT floxed and LKO mice were characterized through histological, biochemical, and molecular analyses. BHMT LKO mice displayed a complete loss of hepatic expression of BHMT mRNA, protein and enzyme activity. Histopathological analysis revealed the development of hepatic steatosis in BHMT LKO mice compared to the floxed mice. These morphological changes were supported by biochemical analysis showing elevated levels of hepatic triglycerides in conjunction with a profound decrease in the methylation potential (i.e., reduced S-adenosylmethionine (SAM): S-adenosylhomocysteine (SAH) ratio), which was mainly driven by a six- to sevenfold increase in SAH levels. BHMT LKO mice also exhibited increased lipid peroxidation and lysosomal dysfunction compared to floxed mice. Early signs of inflammation were seen in the livers of BHMT LKO mice of both sexes, as evident from significant increase in CD68-positive cells and interleukin 1β levels. Additionally, there was a moderate increase in fibrosis, as evidenced by the upregulated expression of α-smooth muscle actin and collagen II levels and the histological assessment of picrosirius red-stained liver sections of BHMT LKO mice of both sexes compared to their respective counterparts. These findings demonstrate that hepatic BHMT deficiency promotes lipid accumulation, lysosomal/proteasomal dysfunction, and early inflammatory and fibrotic changes in the liver by reducing the methylation potential. Collectively, our results underscore BHMT as a critical regulator of liver homeostasis and a potential therapeutic target in liver-related disorders.

Indexed as

Betaine-Homocysteine S-MethyltransferaseFatty LiverHepatocytesMethionineAnimalsFemaleGene DeletionLiverMaleMiceMice, KnockoutS-AdenosylmethionineBetaine-Homocysteine S-MethyltransferaseBhmt protein, mouseMethionineS-AdenosylmethionineBHMTconditional knockoutliver diseaselysosomal dysfunctionSAM:SAH ratio

Identifiers

PMID42072727
PMCPMC13113975

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LicenceCC BY
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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.