The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Primary ciliary dyskinesia (PCD) is a disorder characterized by sinopulmonary disease arising from ciliary motion defects in respiratory epithelia. An essential first step in the diagnostic evaluation of PCD is the use of high-speed videomicroscopy to analyze ciliary beat patterns in nasal epithelia biopsies. This includes a quantitative assessment of ciliary beat frequency (CBF, where CBF of <;...
Breast cancer is the one of the most leading diseases and cause of death in the world. 21% of females diagnosed with breast cancer in 2009 did not survive. Hence, cancer therapy requires a new and novel approach to treat them. Over the last two decades, electroporation, which is the process by which external electrical pulses are applied to facilitate the transport of drugs into cells, is gaining...
The saliva in dry mouth subjects worked as well as that of the controls in providing lubricity. Their interaction with the saliva substitutes was similar to the behavior of that of the controls with the substitute. Based on the statistical analysis, it is likely that saliva in dry mouth subjects differs from that in normal healthy individuals in quantity alone and not quality.
Recently, percutaneous aortic valve (PAV) replacement has been investigated as an endovascular alternative for the treatment of aortic stenosis. Percutaneous valve intervention requires a thorough material characterization of the human aortic root and ascending aorta for successful PAV deployment and function. Recent PAV clinical trials have been conducted on animal models under the assumption that...
The development of human cardiovascular systems physiology is inhibited by the lack of multiscale functional physiological data, which represents human heart physiology at the molecular, cellular, tissue, organ, and system levels. We have developed an experimental approach to study explanted human hearts in vitro at multiple physiological scales with a wide array of imaging modalities. This approach...
Numerical models of continuous wave Tm:YAG thermal fusion in rat intestinal tissues were compared to experiment. Optical and thermal FDM models that included tissue damage based on Arrhenius kinetics were used to predict birefringence loss in collagen as the standard of comparison. The models also predicted collagen shrinkage, jellification and water loss. The inclusion of variable optical and thermal...
Recently, we proposed a new diffusion model in nuclear magnetic resonance (NMR) by solving the Bloch-Torrey equation using fractional order calculus with respect to time and space (Magin, RL, et al, J Magn Reson 2008; 190:255-270). This model yields a new set of parameters to describe anomalous diffusion: diffusion coefficient D, fractional order derivative in space ??, and a spatial variable ?? (in...
Repetitive transcranial magnetic stimulation (rTMS) is a high technology that uses the induced electromagnetic to diagnose and therapy disease. Although there are many researches working on distributing of magnetic and electric field, the static electric filed could be neglected or computed roughly. In this paper, a five-shell spherical model used on rTMS is presented. According to the different dielectric...
Although the lungs work automatically under normal conditions, their work is under mind control when a deep breath is taken. Based on extrapolation, it can be speculated that other human organs, tissues, glands and functions may also work in two modes: automatically and under mind control. Our experimental results gave an affirmative answer to this guess. On this basis, the experiments on treatment...
The characterization of engineered tissue development has been performed via invasive means that have limited abilities to capture the dynamic nature of the interactions and changes that occur. Optical spectroscopic imaging could serve as a non-invasive approach to overcome this limitation. Implemented on a two-photon microscopy platform, spectroscopic imaging can provide information on the biochemistry,...
Autofluorescence microscopy is explored for real-time imaging of human esophagus tissue and detection of disease associated modifications. This approach was also tested using a prototype endoscopy probe.
Objective: To compare the difference of body surface infrared radiation (IR) spectrum between the point Qimen (LR14), point Danzhong (CV17) and non-acupoint control point of patients with hyperplasia of mammary gland (HMG). Methods: Sixty-eight patients with HMG were enrolled in this trail. The infrared radiation spectrum of left and right point Qimen (LR14), point Danzhong (CV17) and control point...
We have developed human virtual cell and tissue models of ischaemia, and used these models to quantify electrophysiological and ECG ST segment changes during subendocardial and global ischaemia. Our investigation has highlighted key differences with previous computational studies based on animal models: (i) propagation failure in the human model occurs with a smaller degree of hyperkalaemia compared...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.