In vivo endothelial cells (ECs) are located under the microenvironment of both surface topography of the basement membrane and the mechanical loading resulting from blood flow.
Synthesis of NO by these cells is stimulated by a variety of signals including hormones, cytokines, growth factors, fluid shear stress, and mechanical loading, resulting in a number of distinct physiological and pathophysiological responses.
As expected, mechanical loading resulted in a more mature tendon tissue characterized by a firmer tissue texture and densely deposited matrices which formed longitudinally aligned collagen fibers in a highly compact fashion.
On the other hand, the biphasic behaviors under tensile mechanical loading result in a range from a minimum of 5.42±1.05 MPa to a maximum of 12.00±1.96 MPa for the PEKK PCL scaffolds, and 10.19±4.49 MPa to 22.60±2.44 MPa for the gelatin-PCL scaffolds.
The results of the current study point to a similar response of condylar tissues to mechanical loading resulting from mandibular advancement.
Overall, 9 ± 1 days of passive mechanical loading resulted in a 35% higher specific force (P < 0.001) compared with the unloaded leg.
Mechanical load (i.e. running) applied to the human body can cause a physiological or pathological adaptation to this mechanical loading, resulting in respectively a training effect or overuse injury [ 17].
BMP2 stimulation with concurrent mechanical loading resulted in the strongly enhanced C-terminal phosphorylation of Smad1/5/8 followed by an increased nuclear translocation when compared to cells stimulated with BMP2 only.
In rat bone, the absence of mechanical load results in a reduction in bone formation, inhibition of longitudinal growth, and a decrease in the number of osteoblasts and osteoprogenitors in cancellous bone.
The loss of staining is considered to be due to the fatigue due to the exerted mechanical load, resulting in physical and chemical disturbances of the cartilage.
