What is the clinical evidence from this study?

Study design: Review. Population: Heart failure. Intervention: In situ single photon confocal imaging.

What question did this study set out to answer?

Review the development and application of in situ single photon confocal microscopy in Langendorff-perfused hearts to examine cardiomyocyte transverse tubule architecture in healthy and diseased states.

May 6, 2015Frontiers in PhysiologyOpen Access

In situ single photon confocal imaging of cardiomyocyte T-tubule system from Langendorff-perfused hearts

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Key result

In situ confocal imaging of Langendorff-perfused hearts reveals the critical role of T-tubules in HF.

Population

Langendorff-perfused mammalian hearts and cardiomyocytes

Design

Review

Authors

BCBiyi ChenUniversity of Iowa CZCaimei ZhangYunnan University AGAng GuoNorth Dakota State University

Discussion

Member takes

Implication

Advances preclinical T-tubule imaging in heart failure models; leaves open clinical translation.

Key Points

Review the development and application of in situ single photon confocal microscopy in Langendorff-perfused hearts to examine cardiomyocyte transverse tubule architecture in healthy and diseased states.
Evaluated the transition from electron microscopy and single-cell confocal imaging to in situ single photon confocal imaging with fluorescent membrane probes in intact Langendorff-perfused mammalian hearts.
Assessed imaging protocols for visualizing intact subepicardial T-tubule organization without cell isolation artifact.
In situ confocal imaging preserves native sarcolemmal integrity and spatial organization across multiple subepicardial regions within a single intact heart.
The imaging approach resolves developmental maturation stages of T-tubules and tracks pathological microstructural remodeling driving heart failure.

Structured PICO

Population

Langendorff-perfused mammalian hearts and cardiomyocytes

Intervention

In situ single photon confocal imaging

Outcome

Visualization of T-tubule organization and remodelingsurrogate

In situ confocal imaging of Langendorff-perfused hearts is a valuable technique for studying T-tubule architecture and its role in heart failure without the artifacts of cardiomyocyte isolation.

Limitations

Costly compared to imaging in dissociated myocytes
Confocal microscope set-up must be adapted to incorporate Langendorff perfusion system
Imaging is restricted to subepicardial myocytes due to limitations in laser penetration; endocardium cannot be imaged
Not applicable for imaging subepicardium in large mammals due to the thickness of the epicardium

Cite This Study

Chen et al. (2015) conducted a review in Heart failure. In situ single photon confocal imaging was evaluated. In situ single photon confocal imaging of Langendorff-perfused hearts enables the visualization of T-tubule organization in its native environment, revealing its critical role in heart failure.

synapsesocial.com/papers/6a0bd7cedc69176b05a9414d https://doi.org/10.3389/fphys.2015.00134

Topics

Heart failure HFrEF treatment

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In situ single photon confocal imaging of cardiomyocyte T-tubule system from Langendorff-perfused hearts

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

Topics

In situ single photon confocal imaging of cardiomyocyte T-tubule system from Langendorff-perfused hearts

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

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Topics

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