138 research outputs found

    Whitehall in the Caribbean? The legacy of colonial administration for post-colonial democratic development

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    Colonial-era administrative institutions and doctrines are fundamental to any analysis of Westminster’s legacy in the Caribbean. Applying the lens of ‘Public Service Bargains’ (PSBs) – the formal and informal understandings of reward, competence and loyalty of public servants –we first examine constitutional and administrative doctrines regarding the public service of Crown Colonies, before analysing how these worked themselves out in Jamaica. Our analysis reveals a number of perceived deficiencies in the PSB in the pre-independence period that cast a shadow on future relations in the post-independence period

    Physical activity but not sedentary activity is reduced in primary Sjögren’s syndrome

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    The aim of the study was to evaluate the levels of physical activity in individuals with primary Sjögren’s syndrome (PSS) and its relationship to the clinical features of PSS. To this cross-sectional study, self-reported levels of physical activity from 273 PSS patients were measured using the International Physical Activity Questionnaire-short form (IPAQ-SF) and were compared with healthy controls matched for age, sex and body mass index. Fatigue and other clinical aspects of PSS including disease status, dryness, daytime sleepiness, dysautonomia, anxiety and depression were assessed using validated tools. Individuals with PSS had significantly reduced levels of physical activity [median (interquartile range, IQR) 1572 (594–3158) versus 3708 (1732–8255) metabolic equivalent of task (MET) × min/week, p < 0.001], but similar levels of sedentary activity [median (IQR) min 300 (135–375) versus 343 (223–433) (MET) × min/week, p = 0.532] compared to healthy individuals. Differences in physical activity between PSS and controls increased at moderate [median (IQR) 0 (0–480) versus 1560 (570–3900) MET × min/week, p < 0.001] and vigorous intensities [median (IQR) 0 (0–480) versus 480 (0–1920) MET × min/week, p < 0.001]. Correlation analysis revealed a significant association between physical activity and fatigue, orthostatic intolerance, depressive symptoms and quality of life. Sedentary activity did not correlate with fatigue. Stepwise linear regression analysis identified symptoms of depression and daytime sleepiness as independent predictors of levels of physical activity. Physical activity is reduced in people with PSS and is associated with symptoms of depression and daytime sleepiness. Sedentary activity is not increased in PSS. Clinical care teams should explore the clinical utility of targeting low levels of physical activity in PSS

    Fatigue in primary Sjögren's syndrome (pSS) is associated with lower levels of proinflammatory cytokines: a validation study

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    Primary Sjögren’s syndrome (pSS) is a chronic autoimmune rheumatic disease with symptoms including dryness, fatigue, and pain. The previous work by our group has suggested that certain proinflammatory cytokines are inversely related to patient-reported levels of fatigue. To date, these findings have not been validated. This study aims to validate this observation. Blood levels of seven cytokines were measured in 120 patients with pSS from the United Kingdom Primary Sjögren’s Syndrome Registry and 30 age-matched healthy non-fatigued controls. Patient-reported scores for fatigue were classified according to severity and compared to cytokine levels using analysis of variance. The differences between cytokines in cases and controls were evaluated using Wilcoxon test. A logistic regression model was used to determine the most important identifiers of fatigue. Five cytokines, interferon-γ-induced protein-10 (IP-10), tumour necrosis factor-α (TNFα), interferon-α (IFNα), interferon-γ (IFN-γ), and lymphotoxin-α (LT-α) were significantly higher in patients with pSS (n = 120) compared to non-fatigued controls (n = 30). Levels of two proinflammatory cytokines, TNF-α (p = 0.021) and LT-α (p = 0.043), were inversely related to patient-reported levels of fatigue. Cytokine levels, disease-specific and clinical parameters as well as pain, anxiety, and depression were used as predictors in our validation model. The model correctly identifies fatigue levels with 85% accuracy. Consistent with the original study, pain, depression, and proinflammatory cytokines appear to be the most powerful predictors of fatigue in pSS. TNF-α and LT-α have an inverse relationship with fatigue severity in pSS challenging the notion that proinflammatory cytokines directly mediate fatigue in chronic immunological conditions

    B-cell activity markers are associated with different disease activity domains in primary Sjögren's syndrome

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    OBJECTIVES: B-cell activating factor (BAFF), β-2 microglobulin (β2M) and serum free light chains (FLCs) are elevated in primary SS (pSS) and associated with disease activity. We aimed to investigate their association with the individual disease activity domains of the EULAR Sjögren’s Syndrome Disease Activity Index (ESSDAI) in a large well-characterized pSS cohort. METHODS: Sera from pSS patients enrolled in the UK Primary Sjögren’s Syndrome Registry (UKPSSR) (n = 553) and healthy controls (n = 286) were analysed for FLC (κ and λ), BAFF and β2 M. Pearson correlation coefficients were calculated for patient clinical characteristics, including salivary flow, Schirmer’s test, EULAR Sjögren’s Syndrome Patient Reported Index and serum IgG levels. Poisson regression was performed to identify independent predictors of total ESSDAI and ClinESSDAI (validated ESSDAI minus the biological domain) scores and their domains. RESULTS: Levels of BAFF, β2M and FLCs were higher in pSS patients compared to controls. All three biomarkers associated significantly with the ESSDAI and the ClinESSDAI. BAFF associated with the peripheral nervous system domain of the ESSDAI, whereas β2M and FLCs associated with the cutaneous, biological and renal domains. Multivariate analysis showed BAFF, β2M and their interaction to be independent predictors of ESSDAI/ClinESSDAI. FLCs were also shown to associate with the ESSDAI/ClinESSDAI but not independent of serum IgG. CONCLUSION: All biomarkers were associated with total ESSDAI scores but with differing domain associations. These findings should encourage further investigation of these biomarkers in longitudinal studies and against other disease activity measures

    ROSACEAE

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    THE CORRECT NAME FOR PLANTS CALLED  AGRIMONIA ODORATA IN SOUTHERN AFRIC

    The <i>Eriosema squarrosum</i> complex (Papilionoideae, Fabaceae) in southern Africa

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    Eriosema squarrosum (Thunb.) Walp. has traditionally been the dumping ground for all densely pubescent Eriosema species in southern Africa. This study clarifies the identity of E. squarrosum; recognizes three new taxa: E. luteopetalum C. H. Stirton, E. rossii C. H. Stirton and E. umtamvunense C. H. Stirton; effects the combinations  E. latifolium (Benth. ex Harv.) C. H. Stirton and . acuminatum (Eckl. & Zeyh.) C. H. Stirton; and re­instates  E. dregei E. Mey. The species E. preptum C. H. Stirton, described earlier, also belongs to this complex. Rhynchosia barbertonensis C. H. Stirton is given as a new name for E. rogersii Schinz

    The pollination of <i>Canavalia virosa</i> by Xylocopid and Magachilid bees

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    The floral morphology of Canavalia virosa (Roxb). Wight & Arn. is discussed in relation to pollination by Xylocopa flavorufa De Greer and  Megachile combusta Sm. It was found that the relationship between size of flower and bee influenced the type of pollinating strategy and its success. Bees smaller than M. combusta proved ineffective pollinators

    The naturalized species of <i>Lupinus</i> (Fabaceae) in southern Africa

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    Four species of  Lupinus have become naturalized in southern Africa:  L. consentinii Guss.,  L. angustifolius L.,  L. pilosus Murray and  L. luteus L. Their morphological variation and geographical distribution is discussed and a key is provided

    Nocturnal petal movements in the Asteraceae

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    Nocturnal petal movements were recorded from 48 genera and 106 species growing in cultivation at the Royal Botanic Gardens, Kew and in the wild in Canada, Great Britain, France, Italy, Greece, Canary Islands and South Africa. Seven different night positions of petals, as distinct from day positions, are recognized and discussed

    Notes on the genus <i>Rubus</i> in southern Africa

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    The species Rubus ludwigii EckI, & Zeyh. is re-examined and a key is provided to the subspecies recognized, A new subspecies spatiosus C. H. Stirton is described. R. rigidus Sm. var. longepedicellatus C. E. Gust, is raised to specific rank, viz R. longepedicellatus (C. E. Gust.) C. H. Stirton
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