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Biomedical subjects

John Paterson

Publications and source records attributed to John Paterson.

4 recordsLinked to original sources
PubMed2006

Is there a role for dietary salicylates in health?

Acetylsalicylic acid (aspirin; 2-acetoxybenzoic acid) has been used for >100 years for pain relief and to treat inflammatory conditions and fevers. More recently, regular intake has been associated with decreased incidence of certain cancers, particularly colon cancer. After absorption aspirin is very rapidly hydrolysed to salicylic acid (2-hydroxybenzoic acid). The anti-cancer effects of aspirin may be a result of salicylic acid reducing the transcription of prostaglandin H(2)-synthase and thereby the synthesis of pro-inflammatory and potentially-neoplastic prostaglandins. Salicylic acid is widely present in plants and functions as a hormonal mediator of the systemic acquired resistance response to pathogen attack and environmental stress. Thus, it is present in a large range of fruit, vegetables, herbs and spices of dietary relevance. Consequently, the recognised effect of consuming fruit and vegetables on lowering risk of colon cancer may be partly attributable to salicylates in plant-based foods. The present review discusses which types of fruit and vegetables are the richest source of salicylates and whether they are sufficiently released from the food matrix to modify the key cellular events associated with the pathogenesis of colon cancer.

Anticarcinogenic Agents↗
PubMedDate not supplied

Evolution of a model for the thrombolysis of acute stroke patients.

The National Audit Office (NAO, 2005) has reported that the priority afforded to stroke care should be increased, given its impact on health and cost to the NHS. It recommends improvements in preventing, treating and managing stroke patients in line with recent evidence. Thrombolysis for acute ischaemic stroke is a proven treatment that produces good results in significant numbers of patients (Mar et al, 2005). However, owing to various barriers, many hospitals in the UK have failed to implement effective systems to facilitate the delivery of this treatment to acute stroke patients. These barriers include a lack of skill, nursing knowledge, and 'fast-track' organization relating to thrombolysis as a treatment for acute stroke. Fears of intracranial bleeding and lack of appropriate stroke unit beds and issues of consent have also been identified as further problems (Innes and International Stroke Trial (IST-3), 2003). Taking these concerns into consideration, Scarborough District General Hospital has developed a multidisciplinary model with the Coronary Care Unit (CCU), integral to the delivery of treatment. Between 2003 and 2005, 24 stroke patients have received thrombolysis treatment and have been cared for in CCU. Outcome results have been positive, with 51% of patients demonstrating a significant benefit at 7 days post-stroke. This model has broken traditional professional and speciality boundaries to allow patients to receive treatments they otherwise would not have received. Moreover, it provides the potential for further exploration into the wider implementation of thrombolysis for acute stroke patients in the UK.

Acute Disease↗