University of Jordan

About: University of Jordan is a education organization based out in Amman, Jordan. It is known for research contribution in the topics: Population & Health care. The organization has 7796 authors who have published 13764 publications receiving 213526 citations.

Antibiotic prescribing practices by dentists: a review

Abstract: Antibiotics are prescribed by dentists for treatment as well as prevention of infection. Indications for the use of systemic antibiotics in dentistry are limited, since most dental and periodontal diseases are best managed by operative intervention and oral hygiene measures. However, the literature provides evidence of inadequate prescribing practices by dentists, due to a number of factors ranging from inadequate knowledge to social factors. Here we review studies that investigated the pattern of antibiotic use by dentists worldwide. The main defects in the knowledge of antibiotic prescribing are outlined. The main conclusion is that, unfortunately, the prescribing practices of dentists are inadequate and this is manifested by over-prescribing. Recommendations to improve antibiotic prescribing practices are presented in an attempt to curb the increasing incidence of antibiotic resistance and other side effects of antibiotic abuse.

A numerical radius inequality and an estimate for the numerical radius of the Frobenius companion matrix

Abstract: It is shown that if A is a bounded linear operator on a complex Hilbert space, then w(A) ≤ 2 (‖A‖+ ‖A2‖1/2), where w(A) and ‖A‖ are the numerical radius and the usual operator norm of A, respectively. An application of this inequality is given to obtain a new estimate for the numerical radius of the Frobenius companion matrix. Bounds for the zeros of polynomials are also given.

Societal perspectives on over-the-counter (OTC) medicines.

Abstract: Methods. Data were collected using a survey administered to 1000 members of the public in 10 study sites in Northern Ireland, using a structured interview technique. The questionnaire was divided into four sections addressing: (a) attitudes towards community pharmacy and patients’ contact with pharmacies; (b) attitudes towards the use of OTC medicines; (c) views on OTC medicines in terms of safety, potency and effectiveness; and (d) knowledge and opinion of abuse/misuse of OTC medicines. Data were coded and entered into a custom designed SPSS © database for statistical analysis. Results. The majority of participants (74.6%) visited a community pharmacy at least once per month. Almost one-third (32.2%) of participants reported buying OTC drugs at least once per month and the majority (86.4%) would always or often follow the directions on the product. The general public in Northern Ireland were highly aware of the abuse potential of some OTC drugs, with the majority naming painkillers as the products most liable for abuse. Almost one third of the participants reported having personally encountered cases of OTC abuse. Conclusions. This survey revealed that the general public had a high level of awareness of the abuse potential of OTC medicines. These findings indicate that pharmacists could be more proactive in the management of inappropriate OTC drug use.

Toward an image-guided microbeam radiation therapy using gadolinium-based nanoparticles.

Abstract: Ultrasmall gadolinium-based nanoparticles (GBNs) induce both a positive contrast for magnetic resonance imaging and a radiosentizing effect. The exploitation of these characteristics leads to a greater increase in lifespan of rats bearing brain tumors since the radiosensitizing effect of GBNs can be activated by X-ray microbeams when the gadolinium content is, at the same time, sufficiently high in the tumor and low in the surrounding healthy tissue. GBNs exhibit therefore an interesting potential for image-guided radiotherapy.