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Defining severity of personality disorder using electronic health records: short report
- Jonathan Monk-Cunliffe, Giouliana Kadra-Scalzo, Chloe Finamore, Oliver Dale, Mizanur Khondoker, Barbara Barrett, Hitesh Shetty, Richard D. Hayes, Paul Moran
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- Journal:
- BJPsych Open / Volume 9 / Issue 5 / September 2023
- Published online by Cambridge University Press:
- 01 August 2023, e137
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Severity of personality disorder is an important determinant of future health. However, this key prognostic variable is not captured in routine clinical practice. Using a large clinical data-set, we explored the predictive validity of items from the Health of Nation Outcome Scales (HoNOS) as potential indicators of personality disorder severity. For 6912 patients with a personality disorder diagnosis, we examined associations between HoNOS items relating to core personality disorder symptoms (self-harm, difficulty in interpersonal relationships, performance of occupational and social roles, and agitation and aggression) and future health service use. Compared with those with no self-harm problem, the total healthcare cost was 2.74 times higher (95% CI 1.66–4.52; P < 0.001) for individuals with severe to very severe self-harm problems. Other HoNOS items did not demonstrate clear patterns of association with service costs. Self-harm may be a robust indicator of the severity of personality disorder, but further replication work is required.
Ethnic inequalities in involuntary admission under the Mental Health Act: an exploration of mediation effects of clinical care prior to the first admission
- Daniela Fonseca Freitas, Susan Walker, Patrick Nyikavaranda, Johnny Downs, Rashmi Patel, Mizanur Khondoker, Kamaldeep Bhui, Richard D. Hayes
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- Journal:
- The British Journal of Psychiatry / Volume 222 / Issue 1 / January 2023
- Published online by Cambridge University Press:
- 25 October 2022, pp. 27-36
- Print publication:
- January 2023
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Background
Studies show ethnic inequalities in rates of involuntary admission and types of clinical care (such as psychological therapies). However, few studies have investigated if there is a relationship between clinical care practices and ethnic inequalities in involuntary admission.
AimsThis study investigated the impact of ethnicity and clinical care on involuntary admission and the potential mediation effects of prior clinical care.
MethodIn this retrospective cohort study, we used data from the electronic records of the South London and Maudsley NHS Foundation Trust and identified patients with a first hospital admission between January 2008 and May 2021. Logistic regression and mediation analyses were used to investigate the association between ethnicity and involuntary admission, and whether clinical care, in the 12 months preceding admission, mediates the association.
ResultsCompared with White British people, higher odds of involuntary admission were observed among 10 of 14 minority ethnic groups; with more than twice the odds observed among people of Asian Chinese, of Asian Bangladeshi and of any Black background. There were some ethnic differences in clinical care prior to admission, but these had a minimal impact on the inequalities in involuntary admission. More out-patient appointments and home treatment were associated with higher odds of involuntary admission, whereas psychological therapies and having a care plan were associated with reduced odds of involuntary admission.
ConclusionsEthnic inequalities in involuntary admission persist after accounting for potential mediating effects of several types and frequencies of clinical care. Promoting access to psychological therapies and ensuring that care plans are in place may reduce involuntary admissions.
Ethnic disparities in clozapine prescription for service-users with schizophrenia-spectrum disorders: a systematic review
- Anita Margarette Bayya Ventura, Richard D. Hayes, Daniela Fonseca de Freitas
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- Journal:
- Psychological Medicine / Volume 52 / Issue 12 / September 2022
- Published online by Cambridge University Press:
- 05 July 2022, pp. 2212-2223
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Clozapine is the only licenced medication for treating treatment-resistant schizophrenia. Previous studies have suggested unequal rates of clozapine treatment by ethnicity among individuals with schizophrenia-spectrum disorders. One previous review has investigated this topic but was restricted to studies from the USA. This current review aims to synthesise the international literature regarding ethnic disparities in clozapine prescription amongst individuals with schizophrenia-spectrum disorders. We searched CINAHL, PubMed, Medline, Embase, APA PsycINFO and Open Grey and reviewed studies reporting on the proportion of service-users prescribed clozapine separately for different ethnic groups, in individuals with a primary diagnosis of schizophrenia or any schizophrenia-spectrum disorders. A narrative synthesis was conducted to integrate information from included studies. The review was registered in PROSPERO (Number: CRD42020221731). From 24 studies, there is strong, consistent evidence that Black and Hispanic service-users in the UK and the USA are significantly less likely to receive clozapine than White/Caucasian service-users after controlling for multiple demographic and clinical potential confounders. In New Zealand, Māori service-users were reported to be more likely to receive clozapine than those of White/European ethnicity. There is mixed evidence regarding Asian service-users in the UK. The mentioned disparities were observed in studies with TRS and non-TRS cohorts. The results imply that access to clozapine treatment varies among ethnic groups. These findings raise an ethical concern as they suggest a compromise of the standards of care in schizophrenia treatment practices. Interventions are needed to reduce clozapine prescribing disparities among ethnic communities.
Incidence of suicidality in people with depression over a 10-year period treated by a large UK mental health service provider
- Emma R. Francis, Daniela Fonseca de Freitas, Craig Colling, Megan Pritchard, Giouliana Kadra-Scalzo, Natalia Viani, Jaya Chaturvedi, Tom R. Denee, Cicely Kerr, Mitesh Desai, Gemma Scott, Hitesh Shetty, Mathew Broadbent, David Chandran, Johnny Downs, Sumithra Velupillai, Mizanur Khondoker, Robert Stewart, Rina Dutta, Richard D. Hayes
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- Journal:
- BJPsych Open / Volume 7 / Issue 6 / November 2021
- Published online by Cambridge University Press:
- 24 November 2021, e223
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We describe the incidence of suicidality (2007–2017) in people with depression treated by secondary mental healthcare services at South London and Maudsley NHS Trust (n = 26 412). We estimated yearly incidence of ‘suicidal ideation’ and ‘high risk of suicide’ from structured and free-text fields of the Clinical Record Interactive Search system. The incidence of suicidal ideation increased from 0.6 (2007) to 1 cases (2017) per 1000 population. The incidence of high risk of suicide, based on risk forms, varied between 0.06 and 0.50 cases per 1000 adult population (2008–2017). Electronic health records provide the opportunity to examine suicidality on a large scale, but the impact of service-related changes in the use of structured risk assessment should be considered.
Comparing psychotropic medication prescribing in personality disorder between general mental health and psychological services: retrospective cohort study
- Giouliana Kadra-Scalzo, Jacqueline Garland, Stephen Miller, Chin-Kuo Chang, Marcella Fok, Richard D. Hayes, Paul Moran, Hitesh Shetty, Allan H. Young, Robert Stewart
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- Journal:
- BJPsych Open / Volume 7 / Issue 2 / March 2021
- Published online by Cambridge University Press:
- 25 March 2021, e72
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Background
Although no drugs are licensed for the treatment of personality disorder, pharmacological treatment in clinical practice remains common.
AimsThis study aimed to estimate the prevalence of psychotropic drug use and associations with psychological service use among people with personality disorder.
MethodUsing data from a large, anonymised mental healthcare database, we identified all adult patients with a diagnosis of personality disorder and ascertained psychotropic medication use between 1 August 2015 and 1 February 2016. Multivariable logistic regression models were constructed, adjusting for sociodemographic, clinical and service use factors, to examine the association between psychological services use and psychotropic medication prescribing.
ResultsOf 3366 identified patients, 2029 (60.3%) were prescribed some form of psychotropic medication. Patients using psychological services were significantly less likely to be prescribed psychotropic medication (adjusted odds ratio 0.48, 95% CI 0.39–0.59, P<0.001) such as antipsychotics, benzodiazepines and antidepressants. This effect was maintained following several sensitivity analyses. We found no difference in the risk for mood stabiliser (adjusted odds ratio 0.79, 95% CI 0.57–1.10, P = 0.169) and multi-class psychotropic use (adjusted odds ratio 0.80, 95% CI 0.60–1.07, P = 0.133) between patients who did and did not use psychological services.
ConclusionsPsychotropic medication prescribing is common in patients with personality disorder, but significantly less likely in those who have used psychological services. This does not appear to be explained by differences in demographic, clinical and service use characteristics. There is a need to develop clear prescribing guidelines and conduct research in clinical settings to examine medication effectiveness for this population.
Clozapine treatment and risk of COVID-19 infection: retrospective cohort study
- Risha Govind, Daniela Fonseca de Freitas, Megan Pritchard, Richard D. Hayes, James H. MacCabe
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- Journal:
- The British Journal of Psychiatry / Volume 219 / Issue 1 / July 2021
- Published online by Cambridge University Press:
- 27 July 2020, pp. 368-374
- Print publication:
- July 2021
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Background
Clozapine, an antipsychotic with unique efficacy in treatment-resistant psychosis, is associated with increased susceptibility to infection, including pneumonia.
AimsTo investigate associations between clozapine treatment and increased risk of COVID-19 infection in patients with schizophrenia-spectrum disorders who are receiving antipsychotic medications in a geographically defined population in London, UK.
MethodUsing information from South London and Maudsley NHS Foundation Trust (SLAM) clinical records, via the Clinical Record Interactive Search system, we identified 6309 individuals who had an ICD-10 diagnosis of schizophrenia-spectrum disorders and were taking antipsychotics at the time of the COVID-19 pandemic onset in the UK. People who were on clozapine treatment were compared with those on any other antipsychotic treatment for risk of contracting COVID-19 between 1 March and 18 May 2020. We tested associations between clozapine treatment and COVID-19 infection, adjusting for gender, age, ethnicity, body mass index (BMI), smoking status and SLAM service use.
ResultsOf 6309 participants, 102 tested positive for COVID-19. Individuals who were on clozapine had increased risk of COVID-19 infection compared with those who were on other antipsychotic medication (unadjusted hazard ratio HR =
2 .62, 95% CI 1.73–3.96), which was attenuated after adjusting for potential confounders, including clinical contact (adjusted HR = 1.76, 95% CI 1.14–2.72).ConclusionsThese findings provide support for the hypothesis that clozapine treatment is associated with an increased risk of COVID-19 infection. Further research will be needed in other samples to confirm this association. Potential clinical implications are discussed.
Contrasting soil microbial abundance and diversity on and between pasture drill rows in the third growing season after sowing
- Richard C. Hayes, Vadakattu V. S. R. Gupta, Guangdi D. Li, Mark B. Peoples, Richard P. Rawnsley, Keith G. Pembleton
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- Journal:
- Renewable Agriculture and Food Systems / Volume 36 / Issue 2 / April 2021
- Published online by Cambridge University Press:
- 03 June 2020, pp. 163-172
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Changed spatial configurations at sowing have been investigated as a strategy to minimize interspecific competition and improve the establishment and persistence of multi-species plantings in pastures, but the impact of this practice on the soil microbiome has received almost no previous research attention. Differences in populations of bacteria and fungi in the surface 10 cm of soil in the third year following pasture establishment were quantified using quantitative polymerase chain reaction and terminal restriction fragment length polymorphism methods. Populations were compared on, and between, drill rows sown to either the perennial grass phalaris (Phalaris aquatica L.), perennial legume lucerne (alfalfa; Medicago sativa L.) or the annual legume subterranean clover (Trifolium subterraneum L.). Results showed that soil microbial abundance and diversity were related to plant distribution across the field at the time of sampling and to soil chemical parameters including total carbon (C), mineral nitrogen (N), pH, and available phosphorus (P), potassium (K) and sulfur (S). Despite the 27-month lag since sowing, pasture species remained concentrated around the original drill row with very little colonization of the inter-row area. The abundance and diversity of bacterial and fungal populations were consistently greater under drill rows associated with higher total C concentrations in the surface soil compared with the inter-row areas. Our results showed that the pH and available nutrients were similar between the subterranean clover drill row and the inter-row, suggesting that soil microbial populations were not impacted directly by these soil fertility parameters, but rather were related to the presence or absence of plants. The abundance of bacteria and fungi were numerically lower under phalaris rows compared to rows sown to legumes. The richness and diversity of fungal populations were lowest between rows where lucerne was planted. Possible explanations for this observation include a lower C:N ratio of lucerne roots and/or a lack of fibrous roots at the soil surface compared to the other species, illustrating the influence of contrasting plant types on the soil microflora community. This study highlights the enduring legacy of the drill row on the spatial distribution of plants well into the pasture phase of a cropping rotation and discusses the opportunity to enhance the microbiome of cropping soils on a large scale during the pasture phase by increasing plant distribution across the landscape.
A randomized controlled trial of an internet-delivered treatment: Its potential as a low-intensity community intervention for adults with symptoms of depression
- D. Richards, L. Timulak, N. Vigano, E. O’Brien, G. Doherty, J. Sharry, C. Hayes
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- Journal:
- European Psychiatry / Volume 33 / Issue S1 / March 2016
- Published online by Cambridge University Press:
- 23 March 2020, p. S112
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Introduction
Internet-delivered treatments for depression have proved successful, with supported programs offering the potential for improved adherence and outcomes. Internet interventions are particularly interesting in the context of increasing access to interventions, and delivering interventions population-wide.
ObjectiveInvestigate the potential feasibility and effectiveness of an online intervention for depression in the community.
AimsEstablish the effectiveness of a supported online delivered cognitive behavioural intervention for symptoms of depression in adults in the community.
MethodsThe study was a randomized controlled trial of an 8-module internet-delivered cognitive behavioral therapy (iCBT) program for adults with depressive symptoms (n = 96) compared to a waiting-list control group (n = 92). Participants received weekly support from a trained supporter. The primary outcome was depressive symptoms as measured by the Beck Depression Inventory (BDI-II). The program was made available nationwide from an established and recognized charity for depression.
ResultsFor the treatment group, post-treatment effect sizes reported were large for the primary outcome measure (d = 0.91). The between-group effects were moderate to large and statistically significant for the primary outcomes (d = 0.50) favoring the treatment group. Gains were maintained at 6-month follow-up.
ConclusionThe study has demonstrated the efficacy of the online delivered space from depression treatment. Participants demonstrated reliable and statistically significant changes in symptoms from pre- to post-intervention. The study supports a model for delivering online depression interventions population-wide using trained supporters.
Disclosure of interestThe authors have not supplied their declaration of competing interest.
Patterns of use of the Mental Health Act 1983, from 2007–2008 to 2016–2017, in two major London secondary mental healthcare providers
- Sian Oram, Craig Colling, Megan Pritchard, Mizanur Khondoker, Daniela Fonseca de Freitas, Lucile Ter-Minassian, Johnny Downs, Brynmor Lloyd-Evans, Sarah Markham, Nomi Werbeloff, Chin-Kuo Chang, Sonia Johnson, Matthew Hotopf, Richard D. Hayes
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- Journal:
- BJPsych Open / Volume 5 / Issue 6 / November 2019
- Published online by Cambridge University Press:
- 27 November 2019, e102
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Trends in detention under the Mental Health Act 1983 in two major London secondary mental healthcare providers were explored using patient-level data in a historical cohort study between 2007–2008 and 2016–2017. An increase in the number of detention episodes initiated per fiscal year was observed at both sites. The rise was accompanied by an increase in the number of active patients; the proportion of active patients detained per year remained relatively stable. Findings suggest that the rise in the number of detentions reflects the rise of the number of people receiving secondary mental healthcare.
Cathodoluminescence and EPMA Analysis of Alkaline Earth Fluoride Nanowires
- Jacob I. Hayes, Richard D. Jeffery, Gibin George, Jason E. Davis, Daryush Ila, Zhiping Luo
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- Journal:
- Microscopy and Microanalysis / Volume 25 / Issue S2 / August 2019
- Published online by Cambridge University Press:
- 05 August 2019, pp. 2368-2369
- Print publication:
- August 2019
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Demographic and clinical predictors of response to internet-enabled cognitive–behavioural therapy for depression and anxiety
- Ana Catarino, Sarah Bateup, Valentin Tablan, Katherine Innes, Stephen Freer, Andy Richards, Richard Stott, Steven D. Hollon, Samuel Robin Chamberlain, Ann Hayes, Andrew D. Blackwell
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- Journal:
- BJPsych Open / Volume 4 / Issue 5 / September 2018
- Published online by Cambridge University Press:
- 02 October 2018, pp. 411-418
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Background
Common mental health problems affect a quarter of the population. Online cognitive–behavioural therapy (CBT) is increasingly used, but the factors modulating response to this treatment modality remain unclear.
AimsThis study aims to explore the demographic and clinical predictors of response to one-to-one CBT delivered via the internet.
MethodReal-world clinical outcomes data were collected from 2211 NHS England patients completing a course of CBT delivered by a trained clinician via the internet. Logistic regression analyses were performed using patient and service variables to identify significant predictors of response to treatment.
ResultsMultiple patient variables were significantly associated with positive response to treatment including older age, absence of long-term physical comorbidities and lower symptom severity at start of treatment. Service variables associated with positive response to treatment included shorter waiting times for initial assessment and longer treatment durations in terms of the number of sessions.
ConclusionsKnowledge of which patient and service variables are associated with good clinical outcomes can be used to develop personalised treatment programmes, as part of a quality improvement cycle aiming to drive up standards in mental healthcare. This study exemplifies translational research put into practice and deployed at scale in the National Health Service, demonstrating the value of technology-enabled treatment delivery not only in facilitating access to care, but in enabling accelerated data capture for clinical research purposes.
Declaration of interestA.C., S.B., V.T., K.I., S.F., A.R., A.H. and A.D.B. are employees or board members of the sponsor. S.R.C. consults for Cambridge Cognition and Shire. Keywords: Anxiety disorders; cognitive behavioural therapies; depressive disorders; individual psychotherapy
Acute general hospital admissions in people with serious mental illness
- Nishamali Jayatilleke, Richard D. Hayes, Chin-Kuo Chang, Robert Stewart
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- Journal:
- Psychological Medicine / Volume 48 / Issue 16 / December 2018
- Published online by Cambridge University Press:
- 28 February 2018, pp. 2676-2683
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Background
Serious mental illness (SMI, including schizophrenia, schizoaffective disorder, and bipolar disorder) is associated with worse general health. However, admissions to general hospitals have received little investigation. We sought to delineate frequencies of and causes for non-psychiatric hospital admissions in SMI and compare with the general population in the same area.
MethodsRecords of 18 380 individuals with SMI aged ⩾20 years in southeast London were linked to hospitalisation data. Age- and gender-standardised admission ratios (SARs) were calculated by primary discharge diagnoses in the 10th edition of the World Health Organization International Classification of Diseases (ICD-10) codes, referencing geographic catchment data.
ResultsCommonest discharge diagnosis categories in the SMI cohort were urinary conditions, digestive conditions, unclassified symptoms, neoplasms, and respiratory conditions. SARs were raised for most major categories, except neoplasms for a significantly lower risk. Hospitalisation risks were specifically higher for poisoning and external causes, injury, endocrine/metabolic conditions, haematological, neurological, dermatological, infectious and non-specific (‘Z-code’) causes. The five commonest specific ICD-10 diagnoses at discharge were ‘chronic renal failure’ (N18), a non-specific code (Z04), ‘dental caries’ (K02), ‘other disorders of the urinary system’ (N39), and ‘pain in throat and chest’ (R07), all of which were higher than expected (SARs ranging 1.57–6.66).
ConclusionA range of reasons for non-psychiatric hospitalisation in SMI is apparent, with self-harm, self-neglect and/or reduced healthcare access, and medically unexplained symptoms as potential underlying explanations.
Glyphosate Application Timing and Rate for Annual Ryegrass (Lolium multiflorum) Cover Crop Desiccation
- Ryan D. Lins, Charles M. Cole, Richard P. Affeldt, Jed B. Colquhoun, Carol A. Mallory-Smith, Ronald A. Hines, Larry Steckel, Robert M. Hayes
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- Journal:
- Weed Technology / Volume 21 / Issue 3 / September 2007
- Published online by Cambridge University Press:
- 20 January 2017, pp. 602-605
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Annual ryegrass has been proposed as a cover crop in the corn–soybean cropping systems of the U.S. Midwest because of its low seed cost, rapid establishment, contribution to soil quality, weed suppressive abilities, and susceptibility to common broad-spectrum herbicides. However, cover crops can reduce the subsequent main crop yield by creating unfavorable germination and emergence conditions, harboring pests, and if not controlled, competing with the main crop. This study, conducted in Illinois, Oregon, and Tennessee, investigated the efficacy of glyphosate for annual ryegrass winter cover crop removal. Glyphosate at 415, 830, and 1,660 g ae/ha was applied to annual ryegrass at late tiller, second node, boot, and early flowering stages. Annual ryegrass control was consistently maximized with the highest glyphosate rate applied at the boot or early flower stage. Annual ryegrass biomass was generally the lowest with the highest rate of glyphosate applied at the earlier stages. Overall, no single application timing at any glyphosate rate provided complete control or biomass reduction of the annual ryegrass cover crop. A sequential herbicide program or a glyphosate plus a graminicide tank-mix probably will be needed for adequate annual ryegrass stand removal.
Neuroinflammatory and morphological changes in late-life depression: the NIMROD study
- Li Su, Yetunde O. Faluyi, Young T. Hong, Tim D. Fryer, Elijah Mak, Silvy Gabel, Lawrence Hayes, Soteris Soteriades, Guy B. Williams, Robert Arnold, Luca Passamonti, Patricia Vázquez Rodríguez, Ajenthan Surendranathan, Richard W. Bevan-Jones, Jonathan Coles, Franklin Aigbirhio, James B. Rowe, John T. O'Brien
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- Journal:
- The British Journal of Psychiatry / Volume 209 / Issue 6 / December 2016
- Published online by Cambridge University Press:
- 02 January 2018, pp. 525-526
- Print publication:
- December 2016
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We studied neuroinflammation in individuals with late-life, depression, as a risk factor for dementia, using [11C]PK11195 positron emission tomography (PET). Five older participants with major depression and 13 controls underwent PET and multimodal 3T magnetic resonance imaging (MRI), with blood taken to measure C-reactive protein (CRP). We found significantly higher CRP levels in those with late-life depression and raised [11C]PK11195 binding compared with controls in brain regions associated with depression, including subgenual anterior cingulate cortex, and significant hippocampal subfield atrophy in cornu ammonis 1 and subiculum. Our findings suggest neuroinflammation requires further investigation in late-life depression, both as a possible aetiological factor and a potential therapeutic target.
Notes on Contributors
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- By Charles Altieri, Faith Barrett, Alfred Bendixen, David Bergman, Edward Brunner, Stephen Burt, Susan Castillo Street, Michael C. Cohen, Robert Daly, Betty Booth Donohue, Jim Egan, Richard Flynn, Ed Folsom, Stephen Fredman, Frank Gado, Roger Gilbert, Rigoberto González, Nick Halpern, Jeffrey A. Hammond, Kevin J. Hayes, Matthew Hofer, Tyler Hoffman, Christoph Irmscher, Virginia Jackson, Joseph Jonghyun Jeon, John D. Kerkering, George S. Lensing, Mary Loeffelholz, Wendy Martin, Cristanne Miller, David Chioni Moore, Walton Muyumba, John Timberman Newcomb, Bob Perelman, Siobhan Phillips, Brian M. Reed, Elizabeth Renker, Eliza Richards, Reena Sastri, Robin G. Schulze, Mark Scroggins, David E. E. Sloane, Angela Sorby, Juliana Spahr, Willard Spiegelman, Lisa M. Steinman, Ernest Suarez, Joseph T. Thomas, Lesley Wheeler, David Wojahn
- Edited by Alfred Bendixen, Princeton University, New Jersey, Stephen Burt, Harvard University, Massachusetts
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- The Cambridge History of American Poetry
- Published online:
- 05 December 2014
- Print publication:
- 27 October 2014, pp xi-xviii
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Contributors
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- By Rose Teteki Abbey, K. C. Abraham, David Tuesday Adamo, LeRoy H. Aden, Efrain Agosto, Victor Aguilan, Gillian T. W. Ahlgren, Charanjit Kaur AjitSingh, Dorothy B E A Akoto, Giuseppe Alberigo, Daniel E. Albrecht, Ruth Albrecht, Daniel O. Aleshire, Urs Altermatt, Anand Amaladass, Michael Amaladoss, James N. Amanze, Lesley G. Anderson, Thomas C. Anderson, Victor Anderson, Hope S. Antone, María Pilar Aquino, Paula Arai, Victorio Araya Guillén, S. Wesley Ariarajah, Ellen T. Armour, Brett Gregory Armstrong, Atsuhiro Asano, Naim Stifan Ateek, Mahmoud Ayoub, John Alembillah Azumah, Mercedes L. García Bachmann, Irena Backus, J. Wayne Baker, Mieke Bal, Lewis V. Baldwin, William Barbieri, António Barbosa da Silva, David Basinger, Bolaji Olukemi Bateye, Oswald Bayer, Daniel H. Bays, Rosalie Beck, Nancy Elizabeth Bedford, Guy-Thomas Bedouelle, Chorbishop Seely Beggiani, Wolfgang Behringer, Christopher M. Bellitto, Byard Bennett, Harold V. Bennett, Teresa Berger, Miguel A. Bernad, Henley Bernard, Alan E. Bernstein, Jon L. Berquist, Johannes Beutler, Ana María Bidegain, Matthew P. Binkewicz, Jennifer Bird, Joseph Blenkinsopp, Dmytro Bondarenko, Paulo Bonfatti, Riet en Pim Bons-Storm, Jessica A. Boon, Marcus J. Borg, Mark Bosco, Peter C. Bouteneff, François Bovon, William D. Bowman, Paul S. Boyer, David Brakke, Richard E. Brantley, Marcus Braybrooke, Ian Breward, Ênio José da Costa Brito, Jewel Spears Brooker, Johannes Brosseder, Nicholas Canfield Read Brown, Robert F. Brown, Pamela K. Brubaker, Walter Brueggemann, Bishop Colin O. Buchanan, Stanley M. Burgess, Amy Nelson Burnett, J. Patout Burns, David B. Burrell, David Buttrick, James P. Byrd, Lavinia Byrne, Gerado Caetano, Marcos Caldas, Alkiviadis Calivas, William J. Callahan, Salvatore Calomino, Euan K. Cameron, William S. Campbell, Marcelo Ayres Camurça, Daniel F. Caner, Paul E. Capetz, Carlos F. Cardoza-Orlandi, Patrick W. Carey, Barbara Carvill, Hal Cauthron, Subhadra Mitra Channa, Mark D. Chapman, James H. Charlesworth, Kenneth R. Chase, Chen Zemin, Luciano Chianeque, Philip Chia Phin Yin, Francisca H. Chimhanda, Daniel Chiquete, John T. Chirban, Soobin Choi, Robert Choquette, Mita Choudhury, Gerald Christianson, John Chryssavgis, Sejong Chun, Esther Chung-Kim, Charles M. A. Clark, Elizabeth A. Clark, Sathianathan Clarke, Fred Cloud, John B. Cobb, W. Owen Cole, John A Coleman, John J. Collins, Sylvia Collins-Mayo, Paul K. Conkin, Beth A. Conklin, Sean Connolly, Demetrios J. Constantelos, Michael A. Conway, Paula M. Cooey, Austin Cooper, Michael L. Cooper-White, Pamela Cooper-White, L. William Countryman, Sérgio Coutinho, Pamela Couture, Shannon Craigo-Snell, James L. Crenshaw, David Crowner, Humberto Horacio Cucchetti, Lawrence S. Cunningham, Elizabeth Mason Currier, Emmanuel Cutrone, Mary L. Daniel, David D. Daniels, Robert Darden, Rolf Darge, Isaiah Dau, Jeffry C. Davis, Jane Dawson, Valentin Dedji, John W. de Gruchy, Paul DeHart, Wendy J. Deichmann Edwards, Miguel A. De La Torre, George E. Demacopoulos, Thomas de Mayo, Leah DeVun, Beatriz de Vasconcellos Dias, Dennis C. Dickerson, John M. Dillon, Luis Miguel Donatello, Igor Dorfmann-Lazarev, Susanna Drake, Jonathan A. Draper, N. Dreher Martin, Otto Dreydoppel, Angelyn Dries, A. J. Droge, Francis X. D'Sa, Marilyn Dunn, Nicole Wilkinson Duran, Rifaat Ebied, Mark J. Edwards, William H. Edwards, Leonard H. Ehrlich, Nancy L. Eiesland, Martin Elbel, J. Harold Ellens, Stephen Ellingson, Marvin M. Ellison, Robert Ellsberg, Jean Bethke Elshtain, Eldon Jay Epp, Peter C. Erb, Tassilo Erhardt, Maria Erling, Noel Leo Erskine, Gillian R. Evans, Virginia Fabella, Michael A. Fahey, Edward Farley, Margaret A. Farley, Wendy Farley, Robert Fastiggi, Seena Fazel, Duncan S. Ferguson, Helwar Figueroa, Paul Corby Finney, Kyriaki Karidoyanes FitzGerald, Thomas E. FitzGerald, John R. Fitzmier, Marie Therese Flanagan, Sabina Flanagan, Claude Flipo, Ronald B. Flowers, Carole Fontaine, David Ford, Mary Ford, Stephanie A. Ford, Jim Forest, William Franke, Robert M. Franklin, Ruth Franzén, Edward H. Friedman, Samuel Frouisou, Lorelei F. Fuchs, Jojo M. Fung, Inger Furseth, Richard R. Gaillardetz, Brandon Gallaher, China Galland, Mark Galli, Ismael García, Tharscisse Gatwa, Jean-Marie Gaudeul, Luis María Gavilanes del Castillo, Pavel L. Gavrilyuk, Volney P. Gay, Metropolitan Athanasios Geevargis, Kondothra M. George, Mary Gerhart, Simon Gikandi, Maurice Gilbert, Michael J. Gillgannon, Verónica Giménez Beliveau, Terryl Givens, Beth Glazier-McDonald, Philip Gleason, Menghun Goh, Brian Golding, Bishop Hilario M. Gomez, Michelle A. Gonzalez, Donald K. Gorrell, Roy Gottfried, Tamara Grdzelidze, Joel B. Green, Niels Henrik Gregersen, Cristina Grenholm, Herbert Griffiths, Eric W. Gritsch, Erich S. Gruen, Christoffer H. Grundmann, Paul H. Gundani, Jon P. Gunnemann, Petre Guran, Vidar L. Haanes, Jeremiah M. 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Yee, Viktor Yelensky, Yeo Khiok-Khng, Gustav K. K. Yeung, Angela Yiu, Amos Yong, Yong Ting Jin, You Bin, Youhanna Nessim Youssef, Eliana Yunes, Robert Michael Zaller, Valarie H. Ziegler, Barbara Brown Zikmund, Joyce Ann Zimmerman, Aurora Zlotnik, Zhuo Xinping
- Edited by Daniel Patte, Vanderbilt University, Tennessee
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- Book:
- The Cambridge Dictionary of Christianity
- Published online:
- 05 August 2012
- Print publication:
- 20 September 2010, pp xi-xliv
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6 - Mountains and Eocene climate
- from Part II - Case studies: latest Paleocene–early Eocene
- Edited by Brian T. Huber, Smithsonian Institution, Washington DC, Kenneth G. Macleod, University of Missouri, Columbia, Scott L. Wing, Smithsonian Institution, Washington DC
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- Book:
- Warm Climates in Earth History
- Published online:
- 06 July 2010
- Print publication:
- 02 December 1999, pp 161-196
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Summary
ABSTRACT
Mountains produce local changes in climate through their control of vegetation and precipitation, but they may also have significant effects on hemispheric climate by setting up long-period waves in the atmosphere and preventing the simple zonal circulation that would sharply limit latitudinal heat transport through the atmosphere. As such, accurate estimates of paleotopography are an important boundary condition in global climate models of past warm periods. Detailed reconstruction of mountain belts, particularly their average elevation and aerial extent, is needed to address issues of high latitude warmth during the last ‘hyperthermal’ in the early Eocene. A variety of techniques based on sedimentology, structural geology, basalt vesicularity, stable isotopes, and paleotemperature estimates from fossil plant assemblages have been devised to reconstruct the elevations of ancient mountain systems. We present a new paleoaltimeter to estimate the difference in relative elevation between intermontane basins and the high elevations of ranges near the tree line. Application of this paleoaltimeter to the Eocene Green River Formation supports recent evidence that the Laramide mountains of the western United States were as high as or higher than the modern Rocky Mountains and suggests that many recent global climate simulations have prescribed elevations that are substantially too low.
INTRODUCTION
The early Eocene was perhaps the warmest period in the past 100 million years. Floral and faunal data suggest that warm conditions extended to much higher latitudes than today both in the oceans and on the continents.