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PubMed Journals Articles About "Effect Of Radiofrecuency On Stretch Marks" RSS

05:43 EST 29th January 2020 | BioPortfolio

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Showing "Effect Radiofrecuency Stretch Marks" PubMed Articles 1–25 of 21,000+

Use of autologous micrografting in the treatment of stretch marks.


Rapid-stretch injury to peripheral nerves: implications from an animal model.

Rapid-stretch nerve injuries are among the most devastating lesions to peripheral nerves, yielding unsatisfactory functional outcomes. No animal model has yet been developed that uses only stretch injury for investigation of the pathophysiology of clinical traction injuries. The authors' objective was to define the behavioral and histopathological recovery after graded rapid-stretch nerve injury.

miR-486 is modulated by stretch and increases ventricular growth.

Perturbations in biomechanical stimuli during cardiac development contribute to congenital cardiac defects such as Hypoplastic Left Heart Syndrome (HLHS). This study sought to identify stretch-responsive pathways involved in cardiac development. microRNA (miRNA)-Sequencing identified miR-486 as being increased in cardiomyocytes exposed to cyclic stretch in vitro (63%, p


Cyclooxygenase inhibition does not impact the pressor response during static or dynamic mechanoreflex activation in healthy decerebrate rats.

Passive limb movement or limb muscle stretch in humans and animals are common experimental strategies used to investigate activation of the muscle mechanoreflex independent of contraction-induced metabolite production. Cyclooxygenase (COX) metabolites, however, are produced by skeletal muscle stretch in vitro and have been found to impact various models of mechanoreflex activation. Whether COX metabolites influence the decerebrate rat triceps surae muscle stretch mechanoreflex model remains unknown. We exam...

Periodized versus Non-periodized Stretch Training on Gymnasts Flexibility and Performance.

Static stretching (SS) can increase joint range of motion (ROM), due to neural, morphological, and physio-psychological factors. Periodized training programs (PD) (e. g., strength, power) are adopted to induce greater adaptations while avoiding overtraining. However, the effectiveness of periodized stretch training adaptations are unknown. Therefore, the objective of this study was to compare the effects of periodized and non-periodized (NP) stretching programs on flexibility, hamstrings stiffness and mus...

The KLDpT activation loop motif is critical for MARK kinase activity.

MAP/microtubule-affinity regulating kinases (MARK1-4) are members of the AMPK family of Ser/Thr-specific kinases, which phosphorylate substrates at consensus LXRXXSXXXL motifs. Within microtubule-associated proteins, MARKs also mediate phosphorylation of variant KXGS or ζXKXGSXXNΨ motifs, interfering with the ability of tau and MAP2/4 to bind to microtubules. Here we show that, although MARKs and the closely related salt-inducible kinases (SIKs) phosphorylate substrates with consensus AMPK motifs comparab...

Inferior load generated by preloaded versus manually loaded haemorrhoid banding devices: the effect of 'creep relaxation'.

The efficacy of rubber band ligation of haemorrhoids relies on the load generated on haemorrhoidal tissue by bands as they return to their preformed shape after being deployed. 'Preloaded' haemorrhoid banding devices are widely available, but the effect of the resultant prolonged stretch on bands while stored in this manner has never been examined by comparing these to manually loaded devices, which are stretch immediately prior to being deployed. A difference could have clinical relevance, potentially resu...

Highly accurate, absolute optical encoder using a hybrid-positioning method.

An absolute optical encoder with nanometric positioning repeatability is introduced and investigated. The encoder consists of an improved scale grating and a compact two-probe reading head. The scale grating contains multiple unevenly spaced distance marks that are superimposed onto grating grooves. The two probes, which are located in the sensor head, read the marks and the grating grooves to determine the position and displacement simultaneously. For one of the two probes, a mask with the same code design...

MiR-147 inhibits cyclic mechanical stretch-induced apoptosis in L6 myoblasts via ameliorating endoplasmic reticulum stress by targeting BRMS1.

Functional orthopedic treatment is effective for the correction of malformation. Studies demonstrated myoblasts undergo proliferation and apoptosis on certain stretch conditions. MicroRNAs (miRNAs) function in RNA silencing and post-transcriptional regulation of gene expression, and participate in various biological processes, including proliferation and apoptosis. One hypothesis suggested that miRNA was involved into the procedure via suppressing its target genes then triggered endoplasmic reticulum stress...

Melanism evolution in the cat family is influenced by intraspecific communication under low visibility.

Melanism in the cat family has been associated with functions including camouflage, thermoregulation and parasite resistance. Here we investigate a new hypothesis proposing that the evolution of melanism in cats has additionally been influenced by communication functions of body markings. To evaluate this hypothesis, we assembled a species-level data set of morphological (body marks: white marks on the backs of ears) and ecological (circadian activity: arrhythmic/nocturnal, and environmental preference: ope...

Mechanical stretch enhances sex steroidogenesis in CC Skeletal Muscle Cells.

Skeletal muscle contains estrogens and estrogen synthesis-related enzymes. However, it has not been reported whether myoblasts cultured in vitro also express these enzymes. The purpose of the current study was to address these issues and to explore the effects of mechanical stretch on the enzyme system. The in vitro cultured CC mouse myoblasts were divided into the control, stretch, testosterone and stretch plus testosterone groups. Cells in the stretch and stretch plus testosterone groups were mechanically...

Mechanical stress triggers nuclear remodeling and the formation of Transmembrane Actin Nuclear lines with associated Nuclear Pore Complexes.

Mechanical stimulation of fibroblasts induces changes in the actin cytoskeleton including stress fiber reinforcement and realignment. Here we characterize the nuclear response to mechanical stimulation (uniaxial cyclic stretch). Using fluorescence microscopy and quantitative image analysis we find that stretch-induced nuclear elongation and alignment perpendicular to the stretch vector are dependent on formin-regulated actin polymerization. The mechanosensitive transcription factors YAP/TAZ and MRTF-A (also...

Bone spoons for prehistoric babies: Detection of human teeth marks on the Neolithic artefacts from the site Grad-Starčevo (Serbia).

Around 8000 years ago, throughout the Neolithic world a new type of artefact appeared, small spoons masterly made from cattle bone, usually interpreted as tools, due to their intensive traces of use. Contrary to those interpretations, the small dimensions of spoons and presence of intensive traces of use led us to the assumption that they were used for feeding babies. In order to test that assumption we compared 2230 marks on three spoons from the Neolithic site of Grad-Starčevo in Serbia (5800-5450 cal BC...

Optic Nerve Stretch Is Unlikely to Be a Significant Causative Factor in Dysthyroid Optic Neuropathy.

Although it is a commonly held belief that stretching of the optic nerve is important in dysthyroid optic neuropathy (DON), it is probably mainly due to microvascular ischemia arising from high pressure at the orbital apex. If stretch is important in DON, one would expect longer optic nerves and reduced optic nerve compliance in these patients.

Lamin A/C negatively regulated by miR-124-3p modulates apoptosis of vascular smooth muscle cells during cyclic stretch application in rats.

Apoptosis of vascular smooth muscle cells (VSMCs) influenced by abnormal cyclic stretch is crucial for vascular remodeling during hypertension. Lamin A/C, a nuclear envelope protein, is mechano-responsive, but the role of lamin A/C in VSMC apoptosis is still unclear.

An assessment of a portable cyanoacrylate fuming system (LumiFume™) for the development of latent fingermarks.

The effectiveness and suitability of a portable cyanoacrylate fuming system (LumiFume™) with Lumicyano™ at detecting latent fingermarks was assessed. The first phase of the study compared the LumiFume™ system with traditional cabinet fuming and black/white powder suspension for the development of latent fingermarks on a variety of surfaces (glass, plastic bin bag, laminated wood and tile) by means of depletion series' from 10 donors and four ageing periods (1, 7, 14 and 28 days). The portable fuming s...

Hypoxia augments NaHS-induced ANP secretion via KATP channel, HIF-1α and PPAR-γ pathway.

It has been reported that sodium hydrosulfide (NaHS) stimulated high stretch induced-atrial natriuretic peptide (ANP) secretion via ATP sensitive potassium (K) channel. K channel is activated during hypoxic condition as a compensatory mechanism. However, whether NaHS affects ANP secretion during hypoxia remains obscure. The purpose of the present study is to discover the impact of NaHS on ANP secretion during hypoxia and to unravel its signaling pathway. Isolated beating rat atria were perfused with buffer ...

High-density electromyographic assessment of stretch reflex activity during drop jumps from varying drop heights.

This study investigated how drop heights and their associated drop jump performance relate to stretch reflex modulations. Eleven male subjects performed ten drop jumps from each of three individually predetermined drop heights. These were the drop height resulting in maximal performance (OPT), as well as 10 cm below (LOW) and above (HIGH) maximal performance. To quantify drop jump performance the reactive strength index, derived from force plate measures, was used. High-density surface EMG provided both s...

Forensic Significance of Gunshot Impact Marks on Inanimate Objects: The Need for Translational Research.

Wherever an impact mark is found, either on the surface or on the recovered projectile, it is important for forensic investigators to extract useful information in solving shooting-related cases. This article reviews a collection of works on examination of impact marks upon striking of projectiles on inanimate objects, emphasizing on the retrievable information from a shooting scene and their forensic significance in shooting event reconstruction. Literature suggested that impact marks on target surfaces an...

Effectiveness of Paraffin and Sustained Stretch in Treatment of Shoulder Contractures following a Burn Injury.

To examine if range of motion of the shoulder treated with paraffin will be better than when treated with sustained stretch alone DESIGN: Pilot randomized control trial SETTING: Regional Burn Center PARTICIPANTS: Patients (N=23) who sustained a burn injury, with an shoulder active abduction and/or flexion in the +70°- +150° degree, who were ≥ 14 years of age, receiving follow-up physical therapy after discharge from hospital, and provided a signed consent to participate.

ON THE UNIFORM STRESS/ UNIFORM STRETCH STATES OF PRESTRESSED ARTERIES.

This work examines the mechanics of the circumferentially prestressed N-layer artery, subject to axial tethering force and the internal pressure of blood, focusing on the uniform stretch state, the uniform circumferential stress states and the transitional states between them. Under increasing pressure the i layer is shown to experience five distinct stages, two of which are the uniform stretch state and the uniform circumferential stress state. For arbitrary strain energy density, simple analytical express...

Self-Assembly and Biogenesis of Cellular Membrane is Dictated by Membrane Stretch and Composition.

The cell plasma membrane is a highly dynamic organelle governing a wide range of cellular activities including ion transport, secretion, cell division, growth and development. The fundamental process involved in the addition of new membrane to preexisting plasma membrane however, is unclear. Here we report using biophysical, morphological, biochemical and molecular dynamic simulations, the selective incorporation of proteins and lipids from the cytosol into the cell plasma membrane dictated by membrane stre...

Mechanical and Structural Changes in Human Thoracic Aortas with Age.

Aortic mechanical and structural characteristics have profound effects on pathophysiology, but many aspects of physiologic stress-stretch state and intramural changes due to aging remain poorly understood in human tissues. While difficult to assess in vivo due to residual stresses and pre-stretch, physiologic stress-stretch characteristics can be calculated using experimentally-measured mechanical properties and constitutive modeling. Mechanical properties of 76 human descending thoracic aortas (TA) from 13...

Lamellipodium tip actin barbed ends serve as a force sensor.

Cells change direction of migration by sensing rigidity of environment and traction force, yet its underlying mechanism is unclear. Here we show that tip actin barbed ends serve as an active 'force sensor' at the leading edge. We established a method to visualize intracellular single-molecule fluorescent actin through an elastic culture substrate. We found that immediately after cell edge stretch, actin assembly increased specifically at the lamellipodium tip. The rate of actin assembly increased with incre...

Adaptation of Patterns of Motile Filaments under Dynamic Boundary Conditions.

Boundary conditions are important for pattern formation in active matter. However, it is still not well-understood how alterations in the boundary conditions (dynamic boundary conditions) impact pattern formation. To elucidate the effect of dynamic boundary conditions on the pattern formation by active matter we investigate an in vitro gliding assay of microtubules on a deformable soft substrate. The dynamic boundary conditions were realized by applying mechanical stress through stretching and compression o...


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