Mechanical Methods
Mechanical Methods - Related Videos
05:26
Mechanical Dissociation: A Method to Obtain Viable Cells from a Tissue
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2023
This video describes the non-enzymatic dissociation of fresh human tissue to obtain viable cells. The technique is used for qualitative and quantitative analysis of CD45 positive cells (lymphocytes/leukocytes) present in various normal and malignant human tissues.
11:51
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
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Cited by 10 •
2014
An improved method to mechanically test bone anchorage to candidate implant surfaces is presented. This method allows for alignment of the disruption force exactly perpendicular, or parallel, to the plane of the implant surface, and provides an accurate means to direct the disruption forces to an exact peri-implant region.
07:35
Methods for Studying the Mechanisms of Action of Antipsychotic Drugs in Caenorhabditis elegans
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Cited by 8 •
2014
Approaches for testing the effects of antipsychotic drugs (APDs) in Caenorhabditis elegans are demonstrated. Assays are described for testing drug effects on development and viability and on pharyngeal pumping rate. These methods are also applicable for pharmacogenetic experiments with drug classes other than APDs.
12:45
Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Cited by 29 •
2012
The biosynthesis of cartilaginous extracellular matrix by chondrocytes can be affected by application of mechanical stimuli. This method describes the technique of applying dynamic compressive strains to chondrocytes encapsulated in 3D constructs and the evaluation of induced changes in chondrocyte metabolism.
07:34
A Cost-effective and Reliable Method to Predict Mechanical Stress in Single-use and Standard Pumps
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Cited by 4 •
2015
Shear stress investigations on an oil-water emulsion system result in drop breakup over the experimental time. To count drop sizes in pumping processes, the suitability of inline endoscopy was successfully demonstrated in this protocol.
FAQs
Mechanical methods produce different outcomes because force, motion, material properties, and experimental conditions interact. A force strong enough to disrupt a cell or tissue may be unsuitable when the goal is controlled deformation or structural characterization. Researchers therefore relate the applied physical action to the biological material and intended measurement, helping preserve relevant features while achieving the required manipulation.
Grinding, homogenization, and shearing provide distinct ways to disrupt biological samples. In cell-focused work, this disruption can open cells and release intracellular components for later analysis. The selected action affects how the sample is physically processed, so method choice should reflect whether the objective is general breakdown, sample preparation, or release of cellular contents for subsequent biological examination.
Mechanical methods can separate biological material through filtration or centrifugation rather than only breaking it apart. These operations are useful when the experimental aim is to isolate tissues or cell populations. Because separation is an outcome of the physical treatment, the chosen process and conditions should match the material being handled and the specific population or biological component the study needs to examine.
Selection begins with the intended outcome: disruption, separation, preparation, or characterization. Researchers then match that goal to an operation such as grinding, homogenization, shearing, compression, filtration, centrifugation, or controlled deformation. Force, motion, material properties, and experimental conditions must remain aligned with the sample and the measurement, because each combination can produce a different biological result.
Mechanical methods can reveal how biological materials respond to physical forces, not merely prepare them for analysis. Controlled deformation and related measurements help characterize cells and biomaterials, while disruption and separation support intracellular analysis and isolation tasks. This range makes the methods useful for connecting observable physical behavior with biological structure and function across multiple experimental settings.
In biology, these approaches support cell biology, microbiology, tissue engineering, biomechanics, and disease modeling. They can release intracellular components, isolate tissues or cell populations, prepare samples, or measure the mechanical behavior of cells and biomaterials. Their broader value comes from linking physical properties to biological structure and function, allowing researchers to study both material behavior and biological organization.