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The importance of long-term synaptic plasticity as a cellular substrate for learning and memory is well established. By contrast, little is known about how learning and memory are regulated by voltage-gated ion channels that integrate synaptic information. We investigated this question using mice with general or forebrain-restricted knockout of the HCN1(More)
In contrast to our increasingly detailed understanding of how synaptic plasticity provides a cellular substrate for learning and memory, it is less clear how a neuron's voltage-gated ion channels interact with plastic changes in synaptic strength to influence behavior. We find, using generalized and regional knockout mice, that deletion of the HCN1 channel(More)
A seasonal variation in the month of initial detection of breast cancer has been previously observed in pre-menopausal women, and it has been proposed that this may be due to cyclic changes in tumour growth mediated by the effects of melatonin on ovarian function. To investigate this possibility serum melatonin concentrations have been measured every 2 h(More)
It has come to our attention that panels D, E, and G in Figure 6 of Nolan et al. (Cell 119, 719–732, November 2004) are incorrectly labeled. The symbols for control (HCN1 ) and forebrain-restricted HCN1 knockout (HCN1) are reversed. The closed symbols in these panels correspond to data from HCN1 mice, whereas the open symbols refer to data from HCN1 mice.(More)
Hormones such as melatonin whose serum concentrations vary seasonally have been previously implicated in the growth of breast cancer. The present study was undertaken to identify possible seasonal variation in a range of mammotrophic hormones which could exert a chronobiologic influence in women with breast tumours. Fifteen premenopausal women with a(More)
PURPOSE Metastatic gastrointestinal stromal tumour (GIST) is generally an incurable disease with variable response to imatinib. We aimed to develop prognostic nomograms to predict overall survival (OS) and progression-free survival (PFS) for patients treated with imatinib. METHODS Nomograms were developed in a training cohort (n=330) of patients treated(More)
BACKGROUND Magnetic Resonance Imaging (MRI) accuracy after neoadjuvant systemic therapy (NST) for breast cancer varies according to hormone receptor (HR), human epidermal growth factor receptor type-2 (HER2) subtype and Ki67 proliferation index. Whether MRI accuracy varies by genomic signatures is unknown. We examined accuracy of MRI in the NEONAB trial(More)
BACKGROUND Point-of-care lactate devices are used worldwide for intrapartum decision making. Current practice is often based on Lactate Pro (Arkray) but its imminent product discontinuation necessitates determination of an optimal replacement device. AIMS To evaluate the performance of Lactate Pro and two other point-of-care devices, Lactate Pro 2(More)
BACKGROUND The AURELIA trial demonstrated significantly improved progression-free survival (PFS) with bevacizumab added to chemotherapy for platinum-resistant ovarian cancer (PROC). METHODS Patients with PROC were randomised to receive investigator-selected single-agent chemotherapy alone or with bevacizumab. Post-hoc exploratory analyses assessed(More)
BACKGROUND Smartphones are rapidly changing the way doctors capture and communicate clinical information, particularly in highly visual specialties such as dermatology. An understanding of how and why smartphones are currently used in clinical practice is critical in order to evaluate professional and legal risks, and to formulate policies that enable safe(More)