345 research outputs found

    Erythromycin improves gastric emptying half-time in adult cystic fibrosis patients with gastroparesis

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    AbstractBackgroundGastrointestinal manifestations are frequently encountered in cystic fibrosis patients. Gastroparesis evidenced by a variety of diagnostic methods has been described in patients with cystic fibrosis, predominantly in children and in individuals with advanced lung disease. The presence of gastroparesis in adult patients with different degrees of lung involvement and its response to the acute and chronic administration of macrolides have not been reported.MethodsUsing the University of Florida Cystic Fibrosis database we identified symptomatic patients who had gastroparesis confirmed by a prolonged half-time during gastric emptying scintigraphy.ResultsOf 86 cystic fibrosis patients, periodically followed in our institution, we found five who had classical symptoms and prolonged gastric emptying half-time. Age 25.2±8 years, 80% females, BMI 22±9 kg/m2, HbA1c 5.8±0.6 g/dl, FEV1 53.2±15% of predicted. Gastric emptying half-time was 191.4±91.4 min (range 100–300 min) and decreased to 12.2±6 min (range 5–20 min) after IV administration of erythromycin (p=0.043). Patients were followed up for 3±2.1 years. All patients but one, who was taking opiods, had good clinical response to PO macrolides.ConclusionsGastroparesis occurs in patients with cystic fibrosis, even in patients with relatively preserved lung function and in those without cystic-fibrosis related diabetes. Macrolides may be an effective therapy in cystic fibrosis patients with gastroparesis when administered acutely or chronically

    An Australian Survey of Current Prescribing Practices of Methotrexate in Rheumatoid Arthritis

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    A 15-item questionnaire was distributed by Australia Post between October-December 1992, to Australian rheumatologists. The sample was ascertained from the Australian Rheumatology Association (ARA) Directory. Any ARA registrant whose practice was limited strictly to paediatrics or non clinical research, e.g. immunology, was excluded. A total of 180 eligible practising rheumatologists was identified. Second and third mailings of the questionnaire were made to non-respondents at intervals of about one month. The analysis was based mainly on descriptive statistics

    Potential economic impacts from improving breastfeeding rates in the UK

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    This article has been made available through the Brunel Open Access Publishing Fund.RATIONALE: Studies suggest that increased breastfeeding rates can provide substantial financial savings, but the scale of such savings in the UK is not known. OBJECTIVE: To calculate potential cost savings attributable to increases in breastfeeding rates from the National Health Service perspective. DESIGN AND SETTINGS: Cost savings focussed on where evidence of health benefit is strongest: reductions in gastrointestinal and lower respiratory tract infections, acute otitis media in infants, necrotising enterocolitis in preterm babies and breast cancer (BC) in women. Savings were estimated using a seven-step framework in which an incidence-based disease model determined the number of cases that could have been avoided if breastfeeding rates were increased. Point estimates of cost savings were subject to a deterministic sensitivity analysis. RESULTS: Treating the four acute diseases in children costs the UK at least £89 million annually. The 2009-2010 value of lifetime costs of treating maternal BC is estimated at £959 million. Supporting mothers who are exclusively breast feeding at 1 week to continue breast feeding until 4 months can be expected to reduce the incidence of three childhood infectious diseases and save at least £11 million annually. Doubling the proportion of mothers currently breast feeding for 7-18 months in their lifetime is likely to reduce the incidence of maternal BC and save at least £31 million at 2009-2010 value. CONCLUSIONS: The economic impact of low breastfeeding rates is substantial. Investing in services that support women who want to breast feed for longer is potentially cost saving

    Short- and long-range cis interactions between integrated HPV genomes and cellular chromatin dysregulate host gene expression in early cervical carcinogenesis.

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    Development of cervical cancer is directly associated with integration of human papillomavirus (HPV) genomes into host chromosomes and subsequent modulation of HPV oncogene expression, which correlates with multi-layered epigenetic changes at the integrated HPV genomes. However, the process of integration itself and dysregulation of host gene expression at sites of integration in our model of HPV16 integrant clone natural selection has remained enigmatic. We now show, using a state-of-the-art 'HPV integrated site capture' (HISC) technique, that integration likely occurs through microhomology-mediated repair (MHMR) mechanisms via either a direct process, resulting in host sequence deletion (in our case, partially homozygously) or via a 'looping' mechanism by which flanking host regions become amplified. Furthermore, using our 'HPV16-specific Region Capture Hi-C' technique, we have determined that chromatin interactions between the integrated virus genome and host chromosomes, both at short- (500 kbp), appear to drive local host gene dysregulation through the disruption of host:host interactions within (but not exceeding) host structures known as topologically associating domains (TADs). This mechanism of HPV-induced host gene expression modulation indicates that integration of virus genomes near to or within a 'cancer-causing gene' is not essential to influence their expression and that these modifications to genome interactions could have a major role in selection of HPV integrants at the early stage of cervical neoplastic progression.This work was supported by Cancer Research UK (www.cancerresearchuk.org) Programme Award (A13080) to NC. ELAD was supported by a PhD studentship from The Pathological Society of GB & NI (www.pathsoc. org) awarded to IJG and NC. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript

    Time Constants of Heating and Cooling in the Eastern Water Dragon. Physignathus Lesueurii and Some Generalizations About Heating and Cooling in Reptiles

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    In keeping with other reptiles, core temperature of the lizard Physignathus lesueurii responds more rapidly to a step function increase in temperature than to a corresponding decrease. 2. Observations on twelve species (five families) of non-Chelonian reptiles heating and cooling in air and water show that strongly predictable relationships exist between thermal time constants and body size. Chelonia show a different pattern. 3. These observations are compared with the predictions of a simple model which, although not sufficiently complex to simulate physiological changes, provides insight into the relative importance of the physical and biological factors which underlie the observed relationships

    Superior verbal memory outcome after stereotactic laser amygdalohippocampotomy

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    Objective: To evaluate declarative memory outcomes in medically refractory epilepsy patients who underwent either a highly selective laser ablation of the amygdalohippocampal complex or a conventional open temporal lobe resection. Methods: Post-operative change scores were examined for verbal memory outcome in epilepsy patients who underwent stereotactic laser amygdalohippocampotomy (SLAH: n = 40) or open resection procedures (n = 40) using both reliable change index (RCI) scores and a 1-SD change metric. Results: Using RCI scores, patients undergoing open resection (12/40, 30.0%) were more likely to decline on verbal memory than those undergoing SLAH (2/40 [5.0%], p = 0.0064, Fisher's exact test). Patients with language dominant procedures were much more likely to experience a significant verbal memory decline following open resection (9/19 [47.4%]) compared to laser ablation (2/19 [10.5%], p = 0.0293, Fisher's exact test). 1 SD verbal memory decline frequently occurred in the open resection sample of language dominant temporal lobe patients with mesial temporal sclerosis (8/10 [80.0%]), although it rarely occurred in such patients after SLAH (2/14, 14.3%) (p = 0.0027, Fisher's exact test). Memory improvement occurred significantly more frequently following SLAH than after open resection. Interpretation: These findings suggest that while verbal memory function can decline after laser ablation of the amygdalohippocampal complex, it is better preserved when compared to open temporal lobe resection. Our findings also highlight that the dominant hippocampus is not uniquely responsible for verbal memory. While this is at odds with our simple and common heuristic of the hippocampus in memory, it supports the findings of non-human primate studies showing that memory depends on broader medial and lateral TL regions

    Training students as interprofessional learning facilitators: An exploratory study highlighting the need to build confidence

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    Interprofessional learning (IPL) aims to equip students for future interprofessional and collaborative practice. Involving students as IPL facilitators is becoming increasingly commonplace as an attempt to catalyse the necessary transformation of our workforce needed to deliver truly integrated and person-centred care. Evidence in the literature highlights the key role of trained facilitators in reaching successful IPL outcomes. Some guidelines are available as to how we train staff facilitators, but little evidence is available that describes how to appropriately prepare student IPL facilitators. The aim of this exploratory study was to investigate whether student IPL facilitators felt that they were sufficiently prepared for their role. Data in the form of open-ended text-based responses from student facilitators (n = 9) were collated after an intervention where student facilitators had been given the role of supporting IPL. Data were analysed using principles of thematic analysis. Three main themes emerged: i) building confidence; ii) purpose of IPL; iii) learning moments. Student IPL facilitators who took part in this study felt that they were adequately prepared for their role. Findings show that preparing students for IPL facilitation has similar, yet unique, components compared to the training staff. In particular, this study highlighted a need for student facilitators to receive further preparation to help build their confidence. Involving students as IPL facilitators has great potential in staff and students joining forces to equip students for future interprofessional and collaborative practice that can deliver high-quality care
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