475 research outputs found

    El género de milpiés Cylindroiulus Verhoeff, 1894 (Diplopoda: Julida; Julidae) en España: citas recientes y descripción de tres nuevas especies del País Vasco, Navarra, Andalucía y Cataluña

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    Two large collections of Cylindroiulus were examined (one from the Basque country and Navarra and one from AndalucĂ­a) supplemented by other, smaller collections from other areas of Spain; in total 10 species were represented. Three new species are described: C. caramelos sp. nov., C. elosegiorum sp. nov. and C. karinhansorum sp. nov. The remaining seven species are: C. londinensis (Leach, 1814), C. franzi Attems, 1952, C. punctatus (Leach, 1815), C. pyrenaicus Brölemann, 1897, C. sagittarius Brölemann, 1897, C. sanctimichaelis Attems, 1927 and C. unciger Attems, 1952. Information has been presented on these species where this has added to that previously available. Comments have been made on the challenging londinensis-group which seems particularly specious in the Iberian Peninsula. Suggestions are made for further work on this group include genetic studies. urn:lsid:zoobank.org:pub:434E20C9-F7E3-49F9-86E7-D3EABAEBC9C4Se han examinado dos cuantiosas colecciones de Cylindroiulus (una del PaĂ­s Vasco y Navarra y otra de AndalucĂ­a), y se han suplementado con otras, mĂĄs pequeñas, de otras ĂĄreas de España; en total se han encontrado 10 especies. Se han descrito tres nuevas especies: C. caramelos sp. nov., C. elosegiorum sp. nov. y C. karinhansorum sp. nov. Las otras siete especies fueron: C. londinensis (Leach, 1814), C. franzi Attems, 1952, C. punctatus (Leach, 1815), C. pyrenaicus Brölemann, 1897, C. sagittarius Brölemann, 1897, C. sanctimichaelis Attems, 1927 y C. unciger Attems, 1952. Se presenta informaciĂłn sobre esas especies, añadiĂ©ndola a la ya disponible. Se hacen comentarios sobre el difĂ­cil grupo londinensis, que parece ser especialmente rico en especies en la penĂ­nsula ibĂ©rica. Se sugieren futuras lĂ­neas de investigaciĂłn para este grupo, incluyendo estudios genĂ©ticos

    Staying on, and coming off, antidepressants: the experiences of 752 UKadults.

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    Introduction. Prescription rates for antidepressants (ADs) are high and continue to increase, despite evidence of significant adverse effects, including withdrawal symptoms, and marginal benefit relative to placebo only for short-term treatment of major depression. Such high rates seem to be explicable more in terms of long term usage and repeat prescribing rather than by increases in depression or new patients. Method. This paper reports the responses of a convenience sample of 752 people who had taken antidepressants, but no other psychiatric drugs, ‘within the last two years’ and completed the Medications for Mental Health Survey online in the UK. Results. Most participants had either come off antidepressants (34%) or had tried and failed (36%). Of those still taking them 76% had been doing so for at least a year and 36% for five years or more. 26% expected to take them forever. About half (48%) did not have their drugs reviewed at least every three months. Most (65%) had never had a discussion with the prescriber about coming off. Nearly half (45%) of those who had stopped the drugs had done so without consulting their doctor. However, of those who came off after consulting their doctor, the majority (65%) experienced the doctor to be supportive. Conclusions. The findings are consistent with the idea that high rates are largely explicable by chronic usage, which in turn is partially explained by withdrawal symptoms. Prescribers should strive to establish collaborative relationships in which patients are fully informed about withdrawal effects and their views, about starting and finishing medication, should be explored and valued

    Childhood abuse and the content of delusions

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    Original article can be found at: http://www.sciencedirect.com/science/journal/01452134 Copyright Elsevier Ltd.We aimed to investigate possible associations between histories of childhood abuse and the content of delusions for individuals with psychotic disorders. 39 participants with a psychotic disorder including one or more delusional beliefs successfully completed structured interviews about childhood trauma, delusional beliefs and associated anomalous perceptual experiences including hallucinations. The presence of hallucinations was predicted by greater physical abuse. Greater abuse in general was associated with delusions involving ‘special abilities’ (grandiosity) and, at trend levels, with those involving ‘defective self’. Though preliminary, these results suggest that further investigation is warranted. The presence and nature of abuse may be relevant to delusional presentations and should form an essential part of clinical assessment of psychotic disorder.Peer reviewe

    The interpersonal adverse effects reported by 1008 users of antidepressants; and the incremental impact of polypharmacy

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    Antidepressant drugs are being prescribed at ever increasing rates internationally, despite marginal benefit compared to placebo and a range of adverse effects. Most studies of adverse effects focus on biological phenomena. This article presents the results of an online survey of 1008 self-selected anti-depressant users in Britain, which asked about five adverse effects in the interpersonal domain. The most commonly reported among participants who took only antidepressants were: Sex Life – 43.7%, Work or Study – 27.0% and Social Life – 23.5%. These rates of interpersonal adverse effects were even higher for the 52% of participants who were also taking one or more other psychiatric drugs. Only about a half (48%) felt they had been given enough information about side effects by the prescriber. Those initially prescribed medication by a psychiatrist were more likely to be on several types of drugs and reported more adverse effects than those whose prescriber was a General Practitioner (GP). Researchers and prescribers are encouraged to pay greater attention to interpersonal adverse effects

    Unexpected Consequences: Women’s experiences of a self-hypnosis intervention to help with pain relief during labour.

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    Background Self-hypnosis is becoming increasingly popular as a means of labour pain management. Previous studies have produced mixed results. There are very few data on women’s views and experiences of using hypnosis in this context. As part of a randomized controlled trial of self-hypnosis for intra-partum pain relief (the SHIP Trial) we conducted qualitative interviews with women randomized to the intervention arm to explore their views and experiences of using self-hypnosis during labour and birth. Methods Participants were randomly selected from the intervention arm of the study, which consisted of two antenatal self-hypnosis training sessions and a supporting CD that women were encouraged to listen to daily from 32 weeks gestation until the birth of their baby. Those who consented were interviewed in their own homes 8-12 weeks after birth. Following transcription, the interviews were analysed iteratively and emerging concepts were discussed amongst the authors to generate organizing themes. These were then used to develop a principal organizing metaphor or global theme, in a process known as thematic networks analysis. Results Of the 343 women in the intervention group, 48 were invited to interview, and 16 were interviewed over a 12 month period from February 2012 to January 2013. Coding of the data and subsequent analysis revealed a global theme of ‘unexpected consequences’, supported by 5 organising themes, ‘calmness in a climate of fear’, ‘from sceptic to believer’, ‘finding my space’, ‘delays and disappointments’ and ‘personal preferences’. Most respondents reported positive experiences of self-hypnosis and highlighted feelings of calmness, confidence and empowerment. They found the intervention to be beneficial and used a range of novel strategies to personalize their self-hypnosis practice. Occasionally women reported feeling frustrated or disappointed when their relaxed state was misinterpreted by midwives on admission or when their labour and birth experiences did not match their expectations. Conclusion The women in this study generally appreciated antenatal self-hypnosis training and found it to be beneficial during labour and birth. The state of focused relaxation experienced by women using the technique needs to be recognized by providers if the intervention is to be implemented into the maternity service

    A randomised controlled trial and cost-effectiveness evaluation of 'booster' interventions to sustain increases in physical activity in middle-aged adults in deprived urban neighbourhoods

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    Background: More evidence is needed on the potential role of 'booster' interventions in the maintenance of increases in physical activity levels after a brief intervention in relatively sedentary populations. Objectives: To determine whether objectively measured physical activity, 6 months after a brief intervention, is increased in those receiving physical activity 'booster' consultations delivered in a motivational interviewing (MI) style, either face to face or by telephone. Design: Three-arm, parallel-group, pragmatic, superiority randomised controlled trial with nested qualitative research fidelity and geographical information systems and health economic substudies. Treatment allocation was carried out using a web-based simple randomisation procedure with equal allocation probabilities. Principal investigators and study statisticians were blinded to treatment allocation until after the final analysis only. Setting: Deprived areas of Sheffield, UK. Participants: Previously sedentary people, aged 40-64 years, living in deprived areas of Sheffield, UK, who had increased their physical activity levels after receiving a brief intervention. Interventions: Participants were randomised to the control group (no further intervention) or to two sessions of MI, either face to face ('full booster') or by telephone ('mini booster'). Sessions were delivered 1 and 2 months post-randomisation. Main outcome measures: The primary outcome was total energy expenditure (TEE) per day in kcal from 7-day accelerometry, measured using an Actiheart device (CamNtech Ltd, Cambridge, UK). Independent evaluation of practitioner competence was carried out using the Motivational Interviewing Treatment Integrity assessment. An estimate of the per-participant intervention costs, resource use data collected by questionnaire and health-related quality of life data were analysed to produce a range of economic models from a short-term NHS perspective. An additional series of models were developed that used TEE values to estimate the long-term cost-effectiveness. Results: In total, 282 people were randomised (control = 96; mini booster = 92, full booster = 94) of whom 160 had a minimum of 4 out of 7 days' accelerometry data at 3 months (control = 61, mini booster = 47, full booster = 52). The mean difference in TEE per day between baseline and 3 months favoured the control arm over the combined booster arm but this was not statistically significant (-39 kcal, 95% confidence interval -173 to 95, p = 0.57). The autonomy-enabled MI communication style was generally acceptable, although some participants wanted a more paternalistic approach and most expressed enthusiasm for monitoring and feedback components of the intervention and research. Full boosters were more popular than mini boosters. Practitioners achieved and maintained a consistent level of MI competence. Walking distance to the nearest municipal green space or leisure facilities was not associated with physical activity levels. Two alternative modelling approaches both suggested that neither intervention was likely to be cost-effective. Conclusions: Although some individuals do find a community-based, brief MI 'booster' intervention supportive, the low levels of recruitment and retention and the lack of impact on objectively measured physical activity levels in those with adequate outcome data suggest that it is unlikely to represent a clinically effective or cost-effective intervention for the maintenance of recently acquired physical activity increases in deprived middle-aged urban populations. Future research with middle-aged and relatively deprived populations should explore interventions to promote physical activity that require less proactive engagement from individuals, including environmental interventions

    Effectiveness of direct-acting antiviral therapy among Aboriginal and Torres Strait Islander peoples with HCV infection in Australia: A national real-world cohort (REACH-C)

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    Aboriginal and Torres Strait Islander peoples experience a disproportionate burden of hepatitis C virus (HCV) infection. This study assessed the effectiveness of direct-acting antiviral (DAA) therapy among Aboriginal peoples in the three years following universal access in Australia. REACH-C, a national multicentre prospective cohort study, evaluated HCV treatment outcomes from sequential DAA initiations across 33 health services between March 2016 and June 2019. DAA effectiveness was assessed by sustained virological response (SVR) in the total (full analysis set) and effectiveness (modified analysis set excluding those lost to follow-up) populations. Overall, 915 (10%) Aboriginal and 8095 (90%) non-Indigenous people commenced DAA therapy, of whom 30% and 16% reported current injecting drug use and 73% and 42% were treated in primary care, respectively. SVR in the total and effectiveness populations was 74% and 94% among Aboriginal people and 82% and 94% among non-Indigenous people, with loss to follow-up contributing to lower SVR in the total population analysis (22% Aboriginal, 13% non-Indigenous). Among Aboriginal people, returning for follow-up was positively associated with older age (aOR 1.20; 95% CI 1.04, 1.39) and SVR was negatively associated with cirrhosis (aOR 0.39; 95% CI 0.19, 0.80) and prior DAA treatment (aOR 0.14; 95% CI 0.04, 0.49). Factors reflecting higher vulnerability or inequity were not associated with returning for testing or SVR. DAA therapy was highly effective among Aboriginal peoples with HCV treated through primary and tertiary services. Tailored community-led interventions are necessary to optimize follow-up and engagement. Sustained DAA uptake and equitable access to care, treatment and prevention are required for HCV elimination

    Temporal and spatial variation in distribution of fish environmental DNA in England’s largest lake

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    Environmental DNA offers great potential as a biodiversity monitoring tool. Previous work has demonstrated that eDNA metabarcoding provides reliable information for lake fish monitoring, but important questions remain about temporal and spatial repeatability, which is critical for understanding the ecology of eDNA and developing effective sampling strategies. Here, we carried out comprehensive spatial sampling of England's largest lake, Windermere, during summer and winter to 1) examine repeatability of the method, 2) compare eDNA results with contemporary gill-net survey data, 3) test the hypothesis of greater spatial structure of eDNA in summer compared to winter due to differences in water mixing between seasons, and 4) compare the effectiveness of shore and offshore sampling for species detection. We find broad consistency between results from three sampling events in terms of species detection and abundance, with eDNA detecting more species than established methods and being significantly correlated to rank abundance determined by long-term data. As predicted, spatial structure was much greater in the summer, reflecting less mixing of eDNA than in the winter. For example Arctic charr, a deep-water species, was only detected in deep, mid-lake samples in the summer, while littoral or benthic species such as minnow and stickleback were more frequently detected in shore samples. By contrast in winter, the eDNA of these species was more uniformly distributed. This has important implications for design of sampling campaigns, for example, deep-water species could be missed and littoral/benthic species over-represented by focusing exclusively on shoreline samples collected in the summer

    Pom-pom-like constitutive equations for comb polymers

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    In analogy with the pom-pom model, we introduce a simple model for comb polymers with multiple side-arms attached to a linear backbone by considering a set of coupled equations describing the stretch in the individual interbranch backbone segments. The stretch equations predict a sudden onset of backbone stretch as the flow rate is increased. Drag-strain coupling smooths this transition to some extent. For a series of well characterized polyisoprene and polystyrene combs, we find good agreement with the experimentally determined transient stress growth coefficients in uniaxial extension
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