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Measurement of Liver Stiffness Using Atomic Force Microscopy Coupled with Polarization Microscopy

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Sample, testing and analysis variables affecting liver mechanical properties: A review.

Giorgio Mattei¹, Arti Ahluwalia¹

¹Research Centre "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy.

Acta Biomaterialia

|September 7, 2016

Summary

This summary is machine-generated.

Liver mechanics are crucial for cell response and fibrosis. This review summarizes liver mechanical properties, highlighting variations due to testing methods and sample conditions, offering guidelines for reproducible research.

Keywords:

Constitutive models In-vitro models Liver Mechanical properties Sources of variation

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Area of Science:

Biomedical Engineering
Materials Science
Cell Biology

Background:

Liver mechanics are vital for understanding cell behavior, fibrosis development, and for applications in diagnostics, tissue engineering, and in-vitro models.
Quantifying soft biological tissue mechanics is challenging due to tissue lability and variability in testing conditions, leading to a lack of standardized liver mechanical properties.
Reported mechanical behaviors are highly dependent on adopted testing methods, configurations, sample type, and status, hindering data comparability.

Purpose of the Study:

To review and summarize the bulk mechanical properties of liver tissue reported in the literature.
To discuss potential sources of variation in measured liver mechanical properties, including sample and testing variables.
To provide guidelines for tissue preparation and testing conditions to ensure reproducible and comparable data across laboratories.

Main Methods:

Literature review of studies reporting liver mechanical properties.
Analysis of factors influencing mechanical behavior, distinguishing intrinsic tissue properties from measured properties.
Development of recommendations for standardized sample preparation and testing protocols.

Main Results:

Significant variability exists in reported liver mechanical properties, influenced by intrinsic sample characteristics and extrinsic testing methodologies.
Identified key sample and testing variables that affect the measured mechanical behavior of hepatic tissue.
Proposed standardized testing methods and experimental recommendations to improve data consistency.

Conclusions:

Accurate characterization of liver mechanics is essential for diagnostics and regenerative medicine.
Standardization of testing protocols is crucial for reliable and comparable data in soft tissue mechanics research.
The proposed guidelines aim to facilitate reproducible research and advance the understanding of liver tissue mechanics.