Search results for "Biomedical"

Conditioned media from adipose stem cells down-regulates senescence induced by interleukin-1β in osteoarthritic chondrocytes

2016

Informazione biomedica su Internet e motori di ricerca. Risultati di un trial di un anno

2004

The internet is a communication medium and content distributor that provide information in the general sense but it could be of great utility regarding as the search and retrieval of biomedical information. Search engines represent a great deal to rapidly find information on the net. However, we do not know whether general search engines and meta-search ones are reliable in order to find useful and validated biomedical information. The aim of our study was to verify the reproducibility of a search by key-words (pediatric or evidence) using 9 international search engines and 1 meta-search engine at the baseline and after a one year period. We analysed the first 20 citations as output of each…

Internet-based perioperative exercise program in patients with Barrett’s carcinoma scheduled for esophagectomy [iPEP - study] a prospective randomize…

2017

Abstract Background Patients undergoing surgery for esophageal cancer have a high risk for postoperative deterioration of lung function and pulmonary complications. This is partly due to one-lung ventilation during thoracotomy. This often accounts for prolonged stay on intensive care units, delayed postoperative reconvalescence and reduced quality of life. Socioeconomic disadvantages can result from these problems. Physical preconditioning has become a crucial leverage to optimize fitness and lung function in patients scheduled for esophagectomy, in particular during the time period of neoadjuvant therapy. Methods/Study design We designed a prospective multicenter randomized-controlled tria…

2018

Intestinal electrical stimulation via implants is already used to treat several disorders like constipation or incontinence. Stimulation parameters are most often empiric and not based on systematic studies. One prerequisite to evaluate effects of intestinal electrical stimulation is a direct assessment of intestinal motility. Some common methods are strain gauge transducers or manometry. With both the methods, it is not possible to record the exact 3-D movement. Therefore, we established a new method to record gastrointestinal motility with ultraminiaturized accelerometers, directly glued to the outer surface of the stomach, small intestine, and colon. With this technique, we were able to …

A New Tool for the Analysis of the Effect of Intracerebrally Injected Anti-Amyloid-β Compounds

2021

Background: A wide range of techniques has been developed over the past decades to characterize amyloid-β (Aβ) pathology in mice. Until now, no method has been established to quantify spatial changes in Aβ plaque deposition due to targeted delivery of substances using ALZET® pumps. Objective: Development of a methodology to quantify the local distribution of Aβ plaques after intracerebral infusion of compounds. Methods: We have developed a toolbox to quantify Aβ plaques in relation to intracerebral injection channels using Zeiss AxioVision® and Microsoft Excel® software. For the proof of concept, intracerebral stereotactic surgery was performed in 50-day-old APP-transgenic mice injected wit…

Removal of Viscoelastic Substances

2000

All viscoelastics should be completely removed from the eye to reduce the likelihood of increased intraocular pressure. Should OVD retention behind the IOL occur, an unstable refraction could result. Residual high molecular viscous substance is transported away through the trabecular meshwork, with delay, possibly resulting in a protracted postoperative IOP increase. To aspirate viscoelastics various techniques as well as instruments with different aspiration/irrigation adjustments have been proposed, a few of which will be described here. Viscoelastic removal involving the simultaneous irrigation and aspiration through a single cannula (Nevyas, 1987) or two separate cannulas (Brauweiler, 1…

New method for remote and repeatable monitoring of intraocular pressure variations

2014

We present initial steps toward a new measurement device enabling high-precision, noncontact remote and repeatable monitoring of intraocular pressure (IOP)-based on an innovative measurement principle. Using only a camera and a laser source, the device measures IOP by tracking the secondary speckle pattern trajectories produced by the reflection of an illuminating laser beam from the iris or the sclera. The device was tested on rabbit eyes using two different methods to modify IOP: via an infusion bag and via mechanical pressure. In both cases, the eyes were stimulated with increasing and decreasing ramps of the IOP. As IOP variations changed the speckle distributions reflected back from th…

An efficient method for subcutaneous veins localization using Near Infrared imaging

2014

In the majority of the medical treatments, intravenous catheterization is the most important phase in which skilled medical practitioners locate the best vein and perform catheterization process for medication or blood sampling. Due to the different physiological characteristics, mainly darker skin tone, scars or dehydrated condition of patients, medical staff stumbles in localization of veins. This paper proposes an enhanced method which intends to overcome the difficulty faced by medical staff in veins localization for intravenous catheterization. Using the Near Infrared imaging and image processing algorithms a novel approach for veins visualization is proposed. In order to have complete…

NanoBioInterface: a multidisciplinary challenge

2009

Nanotechnologies are being applied to many fields of science and engineering and represent a broad spectrum of methods, some of which have been known for a long time. However, the public interest as well as the promotion of this topic by funding agencies has led in some cases to a simple renaming of

Unpublished Mediterranean records of marine alien and cryptogenic species

2020

Este artículo contiene 18 páginas, 4 figuras.