This article explores the potential of non-invasive measurement for elevated levels of erythrocyte aggregation , which have been correlated with a higher risk of inflammatory processes. The study proposes utilizing a dynamic light scattering approach to measure aggregability. The sensor modules, referred to as "mDLS," comprise VCSEL and two photodiodes.
View Article and Find Full Text PDFThe physiological characteristics of skin blood flow can be described in terms of the hemodynamic indices (HI). The HI is derived from the laser speckle characteristics, which are governed by the cutaneous blood flow. A miniaturized dynamic light-scattering sensor was used to measure the speckle pattern from the finger root.
View Article and Find Full Text PDFIntroduction: In its fiscal year 2015 final rule, the Centers for Medicare & Medicaid Services (CMS) required reporting of tobacco treatment quality measures as part of the Inpatient Psychiatric Facilities Prospective Payment System (IPF PPS). This pre-intervention, post-intervention policy analysis evaluates the impact of that policy at a large academic medical center that opted to improve performance as it implemented reporting measures.
Methods: Electronic medical record data were collected retrospectively for all adult (≥18 years) inpatient psychiatric admissions from January 1, 2014 to December 31, 2015.
Specific cancer cell targeting is a pre-requisite for efficient drug delivery as well as for high-resolution imaging and still represents a major technical challenge. Tumor-associated enzyme-assisted targeting is a new concept that takes advantage of the presence of a specific activity in the tumor entity. MMP-9 is a protease found to be upregulated in virtually all malignant tumors.
View Article and Find Full Text PDFThe need for test systems for nanoparticle biocompatibility, toxicity, and inflammatory or adaptive immunological responses is paramount. Nanoparticles should be free of microbiological and chemical contaminants, and devoid of toxicity. Nevertheless, in the absence of contamination, these particles may still induce undesired immunological effects in vivo, such as enhanced autoimmunity, hypersensitivity reactions, and fibrosis.
View Article and Find Full Text PDFWe have conducted a study on a large group of healthy and sick subjects and have demonstrated that a new index of coagulativety (SKF), based on measurement of the laser speckle signal from the finger root, correlates with chronological age ranging from 1 to 85 years old. The kinds of non-invasive measurements were obtained during two measurement sessions: one with the application of over-systolic occlusion and another without application of the occlusion. The very significant correlation with age was noted both during the stasis stage and during the non-occluding stage.
View Article and Find Full Text PDFWe conducted a study on 861 healthy and sick subjects and demonstrated that some calculated parameters based on measurement of the dynamic light scattering (DLS) signal from the finger correlate highly with chronological age ranging from 1.5 to 85 years old. Measurements of DLS signals were obtained during both occlusion and nonocclusion of blood flow in the finger.
View Article and Find Full Text PDFPatients with hypothyroidism often have increased creatine kinase (CK) levels. It is possible that there is increased production of CK, but other mechanisms, such as an increased cell membrane permeability or decreased enzyme clearance were also proposed. Recently, troponins T and I have been extensively studied because of their cardiac specificity.
View Article and Find Full Text PDFAnnu Int Conf IEEE Eng Med Biol Soc
March 2008
Our EC-funded project, (FP6 contract No. 031867), "Development of an Implanted Biosensor for Continuous Care and Monitoring System of Diabetic Patients", addresses the pressing needs for the improvement of Blood Glucose monitoring and management through the development of an implanted sensor. This reagentless device integrates a novel nanobiotechnological glucose-sensing array at the heart of a ground-breaking fluorimetric detector, itself using an innovative hydrogel waveguide technology.
View Article and Find Full Text PDFBackground: Patients with autoimmune thyroid disease (AITD) have a higher prevalence of pernicious anemia compared with the general population. Clinical signs of B12 deficiency may be subtle and missed, particularly in patients with known autoimmune disease. We assessed the prevalence of vitamin B12 deficiency in patients with AITD and whether their evaluation may be simplified by measuring fasting gastrin levels.
View Article and Find Full Text PDFIntroduction: Medical school is a very stressful environment with multiple sources of stress, including academic, social and other issues. International medical students are exposed to additional stressors such as homesickness and culture shock.
Methods: In order to assess the influence of cultural background on the level of perceived distress, we examined Israeli and American students studying at the same university during a period of terror.
The aims of this study were to determine whether harassment occurs in the authors' school, the Sackler Faculty of Medicine at Tel Aviv University, and to address the possible influence of cultural background on the perception of harassment. The unique makeup of the school was utilized, with two separate programs for American and Israeli students trained at the same sites and by the same faculty. A two-part questionnaire was developed that included students' reports on the occurrence of harassment, at what stage of their studies, by whom and its nature as well as demographic data.
View Article and Find Full Text PDFEduc Health (Abingdon)
February 2004
Purpose: Early Clinical Exposure (ECE) programs are an increasingly widespread component of undergraduate medical education. Little systematic research exists on the topic. This report compares the approach and cost/benefits of two parallel ECE programs at the Sackler School of Medicine, Tel Aviv University.
View Article and Find Full Text PDFBackground: In this study we examined the effects of caffeine on sleep quality and melatonin secretion. Melatonin is the principal hormone responsible for synchronization of sleep. Melatonin secretion is controlled by neurotransmitters that can be affected by caffeine.
View Article and Find Full Text PDFBackground: Treatment of hyperlipidemia is important for secondary prevention in patients suffering from coronary heart disease. It has been proven that "young elderly" (patients aged 65-75 years) can benefit from the treatment at least as much as younger patients.
Objective: To assess the adequacy of treatment as part of secondary prevention in "young elderly" and younger patients.
It is known from autopsy data that thyroid nodules are far more common than can be detected by palpation alone. With the wide use of modern non-invasive imaging many non-palpable thyroid nodules are discovered but the proper approach to these nodules is still debatable. In a retrospective study, we reviewed the data from 186 US-guided FNA biopsies (US-FNAB) performed between May 1995 and March 1997 at the Sapir Medical Center, Israel, a iodine-sufficient urban area.
View Article and Find Full Text PDFObjective: Reevaluation of the validity of the 1-mg overnight dexamethasone suppression test (ODST) as a screening test for Cushing's syndrome in obese patients.
Research Methods And Procedures: Eighty-six obese patients (body mass index, 30 to 53 kg/m(2)) that were referred to a general endocrine outpatient clinic for evaluation of simple obesity, diabetes mellitus, hypertension, polycystic ovary disease, or pituitary tumor. One milligram dexamethasone was administered orally at 11:00 PM, and serum cortisol levels were measured the following morning between 8:00 AM and 9:00 AM.
Background: Nitrates are one of the most commonly prescribed drug groups for cardiac disease, especially for angina pectoris and congestive heart failure. The chronic efficacy of nitrates is limited by the development of tolerance, which can be attenuated by use of sustained-release preparations or administration of regular-release preparations asymmetrically.
Objective: To determine whether patients receiving isosorbide 5-mononitrate (ISMN) use the drug in a pharmacologically appropriate manner and whether they had been instructed in the prophylactic use of sublingual nitrates prior to effort.
Objective: Autoimmune thyroid disease (ATD) is associated with circulating autoantibodies reactive with epitopes on thyroid tissue and that are thought to be pathogenic in the development of these diseases. Antiphospholipid antibodies (APLA) are a family of immunoglobulins that recognize a variety of plasma proteins in association with anionic phospholipids. These antibodies may lead to a number of clinical syndromes including venous and arterial thromboses, thrombocytopaenia, and recurrent fetal loss.
View Article and Find Full Text PDFA 63 year old woman developed biopsy documented lesions of acute febrile neutrophilic dermatosis (Sweet's syndrome) one week after the onset of subacute thyroiditis. This is only the second reported case of such an association. The role of cytokines in the development of both subacute thyroiditis and Sweet's syndrome may be the link between these two conditions.
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