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Open research questions in Cardiac Fibrosis and Remodeling

480 gap statements mined from Cardiac Fibrosis and Remodeling papers in our 7.9M-paper local library, which holds 1,817 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The progression of DCM may involve persistent molecular changes that extend beyond immediate blood glucose levels. Current therapies may not fully address the underlying molecular mechanisms of DCM. There is a need to identify key candidate genes involved in the pathogenesis and progression of DCM.

    Hyperglycemia-driven metabolic memory signaling destabilizes METTL1 to trigger inflammatory hypertrophy and fibrosis in diabetic cardiomyopathy · 2026 · DOI

  • The roles of the components of metabolic syndrome in outcomes after acute myocardial infarction are less clear. The mechanisms by which obesity impairs early outcomes after myocardial infarction are not fully understood.

    Enhanced myelopoiesis and myeloid TREM1 upregulation link obesity with adverse outcomes after myocardial infarction · 2026 · DOI

  • Lack of effective strategies to improve cardiac repair and prevent post-MI HF. Limited understanding of the mechanisms by which SCFAs promote cardiac repair. Need for further research on the role of FFAR2-dependent signaling in cardiac repair.

    Short-chain fatty acids promote post-myocardial infarction cardiac repair via FFAR2-dependent suppression of osteoclast-like macrophage differentiation · 2026 · DOI

  • Future studies employing continuous glucose monitoring and tissue oxygenation assessment may further elucidate the mechanisms driving lactate elevation in this population. Future studies should prioritize these translational investigations to determine whether this pathway represents a viable therapeutic target for this increasingly prevalent condition.

    Lactylation-driven mitochondrial dysfunction promotes diabetic myocardial fibrosis via impairing mitophagy and activating TGF-β1 · 2026 · DOI

  • The study highlights the need for further research into the role of lactylation in this condition. The authors note that prior work has not fully elucidated the mechanisms underlying mitochondrial dysfunction in diabetic cardiomyopathy.

    Lactylation-driven mitochondrial dysfunction promotes diabetic myocardial fibrosis via impairing mitophagy and activating TGF-β1 · 2026 · DOI

  • The molecular mechanisms underlying left atrial remodeling are not fully understood. The role of cardiac α2δ1 in left atrial hypertrophy is not well established.

    Cardiac α2δ1 C-terminal contributes to left atrial hypertrophy in chronic ischemic heart failure, in association with changes in membrane GluN1 and p-CAMKII/p-HDAC4 signaling · 2026 · DOI

  • The paper identifies technical challenges in assessing mast cell activity in the failing heart, including the need for tissue-based or imaging biomarkers. The review highlights domain challenges in understanding the complex interactions between cardiac mast cells and other cellular components, including fibroblasts and immune cells.

    Molecular mechanisms of mast cells in mediating heart failure · 2026 · DOI

  • However, whether direct remodeling of the aged cardiac ECM can modify myocardial mechanics and function remains poorly understood.

    Enzymatic extracellular matrix remodeling in ex vivo slices of aged myocardium · 2026 · DOI

  • Citrus bergamia (bergamot) has shown beneficial effects on obesity-related cardiometabolic risk factors, but its cardiac effects remain unclear.

    Bergamot (Citrus bergamia) preserves cardiac structure and function and modulates myocardial redox and metabolic profiles in diet-induced obesity · 2026 · DOI

  • Pathological cardiac hypertrophy is a major precursor to heart failure, yet the transcriptional mechanisms that restrain maladaptive remodeling remain incompletely defined.

    Histone Deacetylase 7 protects against pathologic cardiac hypertrophy · 2026 · DOI

  • However, how the aging immune system impacts post-myocardial infarction (MI) repair remains poorly understood.

    Immune responses following myocardial infarction in aged mice · 2026 · DOI

  • The fate of c‐Kit + cells in an Ang II‐elevated injured myocardium remains poorly defined.

    Angiotensin II Promotes the Phenotypic Transition of c‐Kit + Cardiac Interstitial Cells to Myofibroblasts Through Collagen Receptor Discoidin Domain Receptor 2 · 2026 · DOI

  • However, its role in modulating inflammation and fibrosis after AMI is not fully understood.

    TSLP mitigates post-infarction myocardial remodeling by promoting eosinophil recruitment and inhibiting JAK1–STAT5-mediated ferroptosis · 2025 · DOI

  • F-prostanoid receptor (FP receptor), a receptor for Prostaglandin F2α(PGF2α), is involved in the process of tissue fibrosis, but its exact role in the aging heart remains unclear.

    FP receptor inhibits autophagy to aggravate aging-related cardiac fibrosis through PI3K/AKT/mTOR signaling pathway · 2025 · DOI

  • Kidney transplantation (KT) improves cardiovascular outcomes in patients with kidney failure, yet the biological mechanisms underlying post-KT myocardial recovery remain unclear.

    Kidney Transplantation–Induced Reduction in Myocardial Fibrosis and Modulation of Plasma Proteome: Results of a Pilot Study · 2025 · DOI

  • Obesity is associated with impaired angiogenesis and poor recovery following myocardial infarction (MI), yet the underlying molecular mechanisms remain poorly defined.

    Obesity Impacts Post‐Myocardial Infarction Neovascularization by Downregulating AQP1 Expression via the TRPC5 ‐ NFATc3 Signaling Pathway · 2025 · DOI

  • Although activated fibroblast phenotypes are associated with pronounced changes in metabolism, it remains unclear how the metabolic network upholds the effector functions of fibroblasts in the infarcted heart.

    Pyruvate kinase splice variants in fibroblasts influence cardiac remodeling after myocardial infarction in male mice · 2025 · DOI

  • However, it remains unclear whether m5C RNA modifications exert regulatory effects on cardiovascular diseases, particularly cardiac fibrosis.

    Myofibroblast specific knockdown of NSUN2 suppresses cardiac fibrosis post-myocardial infarction · 2025 · DOI

  • However, the phenotypic profile of cardiac CD3 + T-cells and its CD4 + and CD8 + subsets have not been characterized in DCM patients.

    Phenotypes and mechanisms of dysfunctional cardiac T-lymphocytes in dilated cardiomyopathy patients · 2025 · DOI

  • Investigating the mechanisms of TREM1 upregulation in myeloid cells, - Studying the effects of TREM1 blockade on human patients with myocardial infarction, - Examining the role of other inflammatory markers in obesity-related myocardial…

    Enhanced myelopoiesis and myeloid TREM1 upregulation link obesity with adverse outcomes after myocardial infarction · 2026 · DOI

  • Validate the prognostic relevance of SCFAs in larger cohorts - Investigate SCFAs-FFAR2 signaling as a potential therapeutic target in post-MI heart…

    Short-chain fatty acids promote post-myocardial infarction cardiac repair via FFAR2-dependent suppression of osteoclast-like macrophage differentiation · 2026 · DOI

  • The clinical management of HF is still hampered by its complex heterogeneity, - Current diagnostic tools lack the sensitivity required for early-stage identification, - The study relied on a specific dataset and may not be generalizable to other…

    Integrative multi-omics and machine learning identify mechanical stimulus-related genes and immune microenvironment remodeling in heart failure · 2026 · DOI

  • Further validation of the precise cell-type specificity of NPPA expression is required, - Elucidation of the biological pathways associated with the identified markers, - Investigation of the potential of MSRG-based diagnostic biomarkers in clinical…

    Integrative multi-omics and machine learning identify mechanical stimulus-related genes and immune microenvironment remodeling in heart failure · 2026 · DOI

  • The study used a murine model, - The study had a limited number of mice, - The study did not investigate the effects of CD4 + T cells on other cell types…

    T-Cell–Derived IFNγ Instructs ECM Crosslinking by Cardiac Fibroblasts Through LOXL3 in Experimental Cardiometabolic HFpEF · 2026 · DOI

  • Investigate the effects of CD4 + T cells on other cell types in the heart, - Examine the role of LOXL3 in human HFpEF, - Develop therapeutic strategies to target CD4 + T cells or LOXL3…

    T-Cell–Derived IFNγ Instructs ECM Crosslinking by Cardiac Fibroblasts Through LOXL3 in Experimental Cardiometabolic HFpEF · 2026 · DOI

Most-cited papers in Cardiac Fibrosis and Remodeling

Most recent work

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Open questions raised by papers listed on this page include: (1) There is a need to identify key candidate genes involved in the pathogenesis and progression of DCM (“Hyperglycemia-driven metabolic memory signaling destabilizes METTL1 to trigger…”, 2026); (2) The mechanisms by which obesity impairs early outcomes after myocardial infarction are not fully understood (“Enhanced myelopoiesis and myeloid TREM1 upregulation link obesity with adverse…”, 2026); (3) Lack of effective strategies to improve cardiac repair and prevent post-MI HF (“Short-chain fatty acids promote post-myocardial infarction cardiac repair via…”, 2026); (4) Future studies should prioritize these translational investigations to determine whether this pathway represents a viable therapeutic target for this increasingly prevalent condition (“Lactylation-driven mitochondrial dysfunction promotes diabetic myocardial…”, 2026); (5) The molecular mechanisms underlying left atrial remodeling are not fully understood (“Cardiac α2δ1 C-terminal contributes to left atrial hypertrophy in chronic…”, 2026). 480 gap statements have been mined from Cardiac Fibrosis and Remodeling papers in our 7.9M-paper local library, which holds 1,817 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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