Newcastle University

About: Newcastle University is a education organization based out in Newcastle upon Tyne, United Kingdom. It is known for research contribution in the topics: Population & Dementia. The organization has 31772 authors who have published 71187 publications receiving 2539147 citations. The organization is also known as: University of Newcastle upon Tyne.

Direct Physiologic Evidence of a Heteromodal Convergence Region for Proper Naming in Human Left Anterior Temporal Lobe

Abstract: Retrieving the names of friends, loved ones, and famous people is a fundamental human ability. This ability depends on the left anterior temporal lobe (ATL), where lesions can be associated with impaired naming of people regardless of modality (e.g., picture or voice). This finding has led to the idea that the left ATL is a modality-independent convergence region for proper naming. Hypotheses for how proper-name dispositions are organized within the left ATL include both a single modality-independent (heteromodal) convergence region and spatially discrete modality-dependent (unimodal) regions. Here we show direct electrophysiologic evidence that the left ATL is heteromodal for proper-name retrieval. Using intracranial recordings placed directly on the surface of the left ATL in human subjects, we demonstrate nearly identical responses to picture and voice stimuli of famous U.S. politicians during a naming task. Our results demonstrate convergent and robust large-scale neurophysiologic responses to picture and voice naming in the human left ATL. This finding supports the idea of heteromodal (i.e., transmodal) dispositions for proper naming in the left ATL.

Verbal abuse, like physical and sexual abuse, in childhood is associated with an earlier onset and more difficult course of bipolar disorder

Abstract: ObjectivesPhysical or sexual abuse in childhood is known to have an adverse effect on the course of bipolar disorder, but the impact of verbal abuse has not been well elucidated. MethodsWe examined the occurrence and frequency (never to frequently) of each type of abuse in childhood in 634 US adult outpatients (average age 40years). Patients gave informed consent and provided information about their age of onset and course of illness prior to study entry. ResultsVerbal abuse alone occurred in 24% of the patients. Similar to a history of physical or sexual abuse, a history of verbal abuse was related to an earlier age of onset of bipolar disorder and other poor prognosis characteristics, including anxiety and substance abuse comorbidity, rapid cycling, and a deteriorating illness course as reflected in ratings of increasing frequency or severity of mania and depression. ConclusionsA lasting adverse impact of the experience of verbal abuse in childhood is suggested by its relationship to an earlier age of onset of bipolar disorder, other poor prognosis factors, and a deteriorating course of illness. Verbal abuse is a common confound in comparison groups defined by a lack of physical or sexual abuse. Ameliorating the impact of verbal abuse on the unfolding course of bipolar disorder appears to be an important target of therapeutics and worthy of attempts at primary and secondary prophylaxis. Family-based treatments that focus on psychoeducation, enhancing intra-family communication, and coping skills may be particularly helpful.

In vitro protective effects of Withania somnifera (L.) dunal root extract against hydrogen peroxide and β-amyloid(1-42)-induced cytotoxicity in differentiated PC12 cells.

Abstract: Withania somnifera L. Dunal (Solanaceae), also known as 'ashwagandha' in Sanskrit and as 'Indian ginseng', is used widely in Ayurvedic medicine as a nerve tonic and memory enhancer, with antiaging, antistress, immunomodulatory and antioxidant properties. There is a paucity of data on the potential neuroprotective effects of W. somnifera root, as traditionally used, against H(2)O(2)- and Aβ((1-42))-induced cytotoxicity which are current targets for novel approaches to treat dementia, especially dementia of the Alzheimer's type (AD). In this study, an aqueous extract prepared from the dried roots of W. somnifera was assessed for potential protective effects against H(2)O(2)- and Aβ((1-42))-aggregated fibril cytotoxicity by an MTT assay using a differentiated rat pheochromocytoma PC12 cell line. The results suggest that pretreatments of differentiated PC12 cells with aqueous extracts of W. somnifera root significantly protect differentiated PC12 cells against both H(2)O(2)- and Aβ((1-42))-induced cytotoxicity, in a concentration dependent manner. To investigate the compounds that could explain the observed effects, the W. somnifera extract was analysed by liquid chromatography-serial mass spectrometry and numerous withanolide derivatives, including withaferin A, were detected. These results demonstrate the neuroprotective properties of an aqueous extract of W. somnifera root and may provide some explanation for the putative ethnopharmacological uses of W. somnifera for cognitive and other neurodegenerative disorders that are associated with oxidative stress.

The adoption of new technology in the American machinery industry

Abstract: Rees J., Briggs R. and Oakey R. (1984) The adoption of new technology in the American machinery industry, Reg. Studies 18, 489–504. This study examines the spread of a number of key production technologies among machinery manufacturers across the United States. Based on a mail and interview survey of over 600 industrial plants across the country, it was found that adoption rates for these innovations varied by industrial sector, organizational status of plants, age and size of plants as well as by region and metropolitan characteristics of plants. The findings suggest that policy makers interested in nurturing small businesses should consider technical assistance strategies that encourage the spread of innovation among firms, and that high priority be given to labour training programmes in local economic development strategies. At the federal level this study also suggests that the innovation potential of Manufacturing Belt companies should not be overlooked in any new initiatives to encourage economic re...

Plasmapheresis in acute liver failure.

Abstract: A series of 9 patients with acute hepatic failure and Grade IV hepatic coma received daily plasmapheresis until they recovered or death ensued. Of the nine, seven (77%) showed an improvement in coma grade and five (55%) survived to leave hospital. Plasmapheresis significantly decreased serum bilirubin, aspartate aminotransferase and plasma ammonia concentrations. Survival following plasmapheresis appeared substantially better than in a non randomized group of similar patients not plasmapheresed. The simplicity of the procedure, biochemical improvements observed and apparent efficacy, suggest that further evaluation of the technique as a means of providing temporary hepatic support is indicated.