Results We interviewed 21 chief investigators, 10 trial managers and 17 PPI contributors from 28 trials. Over half the informants indicted that PPI had made a difference, influencing either an aspect of a trial, or how trialists felt about a trial. Informants described how PPI’s impact depended on the quality of chief investigators’ goals and plans for PPI, the quality of relationships between ...

BACKGROUND The rate of significant conduction disturbances requiring permanent pacemaker implantation (PPI) following surgical aortic valve replacement (AVR) is 2-8%. Transcatheter aortic valve implantation (TAVI) is an alternative management approach in patients with severe aortic stenosis who are not considered candidates for AVR. The TAVI using the CoreValve (CV) bioprosthesis is associated ...

PURPOSE The present study aimed to assess the cost effectiveness of concomitant proton pump inhibitor (PPI) treatment in low-dose acetylsalicylic acid (LDASA) users at risk of upper gastrointestinal (UGI) adverse effects as compared with no PPI co-medication with attention to the age-dependent influence of PPI-induced adverse effects. METHODS We used a Markov model to compare the strategy of ...

BACKGROUND Proton-pump inhibitors (PPIs) are among the most frequently prescribed medications. Community-acquired pneumonia (CAP) is a common cause of morbidity, mortality and healthcare spending. Some studies suggest an increased risk of CAP among PPI users. We conducted a systematic review and meta-analysis to determine the association between outpatient PPI therapy and risk of CAP in adults....

Patient and public involvement (PPI) has been recognized internationally. In England, NHS policies have increasingly emphasized the importance of patient-centered services, but limited evidence exists about the implementation of PPI policies and strategies within organizations. Few studies have explored health professionals’ perceptions of PPI and comparatively little is known about the experie...

BACKGROUND The international literature on patient and public involvement (PPI) in research covers a wide range of issues, including active lay involvement throughout the research cycle; roles that patients/public can play; assessing impact of PPI and recommendations for good PPI practice. One area of investigation that is less developed is the sustainability and impact of PPI beyond involvemen...

Prepulse inhibition (PPI) is the reduction in the startle response caused by a low intensity non-startling stimulus (prepulse) which is presented shortly before the startle stimulus and is an operational measure of sensorimotor gating. PPI is impaired in schizophrenia patients and in rats with central dopamine (DA) activation. The inferior colliculus (IC) is a critical part of the auditory path...

Cellular processes are typically carried out by protein complexes and functional modules. Identifying them plays an important role for our attempt to reveal principles of cellular organizations and functions. In this article, we review computational algorithms for identifying protein complexes and/or functional modules from protein^protein interaction (PPI) networks. We first describe issues an...