424 research outputs found
Digestible Lysine on Live Performance of Chicken Type Naked Neck During the Starter Phase
Aid conditionalities, international Good Manufacturing Practice standards and local production rights: a case study of local production in Nepal
© 2015 Brhlikova et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium,
provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://
creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.This work was supported by the Economic and Social Research Council and
the Department for International Development [RES-167-25-0110] through
the collaborative research project
Tracing Pharmaceuticals in South Asia
(2006
–
2009). In addition to the authors of this paper, the project team
included: Soumita Basu, Gitanjali Priti Bhatia, Erin Court, Abhijit Das, Stefan
Ecks, Patricia Jeffery, Roger Jeffery, Rachel Manners, and Liz Richardson.
Martin Chautari (Kathmandu) and the Centre for Health and Social Justice
(New Delhi) provided resources drawn upon in writing this paper but are
not responsible for the views expressed, nor are ESRC or DFID.
Ethical review was provided by the School of Social and Political Science at
the University of Edinburgh, and ethical approval in Nepal for the study
granted by the Nepal Health Research Council (NHRC)
Natural and human-induced Holocene paleoenvironmental changes on the Guadiana shelf (northern Gulf of Cadiz)
Three contrasting sedimentary environments on the continental shelf off the Guadiana River (northern Gulf of Cadiz) were integrated in a chronological framework and analysed in terms of sedimentology and benthic foraminiferal assemblages to understand the Holocene paleoenvironmental evolution. The analysed environments differ in terms of their depositional regimes and benthic foraminiferal assemblages. However, a dominant fluvial origin of the sand fraction was observed in all three environments. Holocene sedimentary processes were mainly controlled by natural (sea level changes and climate variations) and human-induced processes (e.g. deforestation, agriculture) along four evolutionary stages. The three older stages were mainly influenced by natural processes, such as sea level variations and fluvial inputs, whereas the most recent stage reflects a combination of climatic- and human-induced processes. A deepening of sedimentary environments related to a period of rapid sea level rise, strongly influenced by river discharges occurred from c. 11,500 to c. 10,000 cal. yr BP. A reduction in sediment export to the shelf, as a result of the continuous and rapid sea level rise and enhanced estuary infilling reflects the second stage, from c. 10,000 to c. 5000 cal. yr BP. The beginning of the third stage, from c. 5000 to c. 1500–1000 cal. yr BP, is marked by a sea-level slowdown and the relatively stable climate and environmental conditions. The fourth stage, from c. 1500–1000 cal. yr BP to Recent times, reflects the intensification of human-induced processes and climatic variability in the Guadiana River basin. This stage also reflects modern depositional conditions, with the formation of a proximal prodeltaic wedge and a distal muddy body
Determinants of the organization of diabetes mellitus care in user satisfaction
The objective of the study was analyze user satisfaction determinants of patients with Diabetes Mellitus (DM) regarding the outpatient clinic specialties at the Health Centre of the School. Qualitative cross-sectional study was carried out in outpatient specialty with 20 users with diagnosis of DM. We adopted the method of semi-structured interview using a scripting guide. We used Atlas it software 7.0 to aid in the decoding of speech, and analyzed it by content analysis. The empirical material encoded enabled to observe that the most evident themes are related to organizational accessibility and the relationship between user and service staff in perspective of longitudinality. It was observed the outpatient identifying clinic specialties as a regular source of care and dissatisfaction with regard to service accessibility.O objetivo do estudo foi analisar os determinantes da satisfação do usuário com Diabetes Mellitus (DM) sobre o atendimento no ambulatório de especialidades de um Centro de Saúde Escola. O estudo transversal com abordagem qualitativa foi desenvolvido no ambulatório de especialidades com 20 usuários com diagnóstico de DM. Foram aplicadas entrevistas semiestruturadas por meio de um roteiro norteador. Utilizou-se software Atlas ti 7.0 para auxílio na codificação das falas e técnica de Análise de Conteúdo para análise dos dados. Como resultado, observou-se que os temas mais evidenciados estão relacionados à acessibilidade organizacional e à relação entre usuário, equipe e serviço na perspectiva da longitudinalidade. Observou-se a identificação do ambulatório de especialidade como fonte regular de cuidado e a insatisfação no que se refere à acessibilidade ao serviço.
Brabykinin B1 Receptor Antagonism Is Beneficial in Renal Ischemia-Reperfusion Injury
Previously we have demonstrated that bradykinin B1 receptor deficient mice (B1KO) were protected against renal ischemia and reperfusion injury (IRI). Here, we aimed to analyze the effect of B1 antagonism on renal IRI and to study whether B1R knockout or antagonism could modulate the renal expression of pro and anti-inflammatory molecules. To this end, mice were subjected to 45 minutes ischemia and reperfused at 4, 24, 48 and 120 hours. Wild-type mice were treated intra-peritoneally with antagonists of either B1 (R-954, 200 µg/kg) or B2 receptor (HOE140, 200 µg/kg) 30 minutes prior to ischemia. Blood samples were collected to ascertain serum creatinine level, and kidneys were harvested for gene transcript analyses by real-time PCR. Herein, B1R antagonism (R-954) was able to decrease serum creatinine levels, whereas B2R antagonism had no effect. The protection seen under B1R deletion or antagonism was associated with an increased expression of GATA-3, IL-4 and IL-10 and a decreased T-bet and IL-1β transcription. Moreover, treatment with R-954 resulted in lower MCP-1, and higher HO-1 expression. Our results demonstrated that bradykinin B1R antagonism is beneficial in renal IRI
Global quantitative indices reflecting provider process-of-care: data-base derivation
Background: Controversy has attended the relationship between risk-adjusted mortality and process-of-care. There would be advantage in the establishment, at the data-base level, of global quantitative indices subsuming the diversity of process-of-care. Methods: A retrospective, cohort study of patients identified in the Australian and New Zealand Intensive Care Society Adult Patient Database, 1993-2003, at the level of geographic and ICU-level descriptors (n = 35), for both hospital survivors and non-survivors. Process-of-care indices were established by analysis of: (i) the smoothed time-hazard curve of individual patient discharge and determined by pharmaco-kinetic methods as area under the hazard-curve (AUC), reflecting the integrated experience of the discharge process, and time-to-peak-hazard (TMAX, in days), reflecting the time to maximum rate of hospital discharge; and (ii) individual patient ability to optimize output (as length-of-stay) for recorded data-base physiological inputs; estimated as a technical production-efficiency (TE, scaled [0,(maximum)1]), via the econometric technique of stochastic frontier analysis. For each descriptor, multivariate correlation-relationships between indices and summed mortality probability were determined. Results: The data-set consisted of 223129 patients from 99 ICUs with mean (SD) age and APACHE III score of 59.2(18.9) years and 52.7(30.6) respectively; 41.7% were female and 45.7% were mechanically ventilated within the first 24 hours post-admission. For survivors, AUC was maximal in rural and for-profit ICUs, whereas TMAX (≥ 7.8 days) and TE (≥ 0.74) were maximal in tertiary-ICUs. For non-survivors, AUC was maximal in tertiary-ICUs, but TMAX (≥ 4.2 days) and TE (≥ 0.69) were maximal in for-profit ICUs. Across descriptors, significant differences in indices were demonstrated (analysisof- variance, P ≤ 0.0001). Total explained variance, for survivors (0.89) and non-survivors (0.89), was maximized by combinations of indices demonstrating a low correlation with mortality probability. Conclusions: Global indices reflecting process of care may be formally established at the level of national patient databases. These indices appear orthogonal to mortality outcome.John L Moran, Patricia J Solomon and the Adult Database Management Committee (ADMC) of the Australian and New Zealand Intensive Care Society (ANZICS
A tale of two stories: astrocyte regulation of synaptic depression and facilitation
Short-term presynaptic plasticity designates variations of the amplitude of
synaptic information transfer whereby the amount of neurotransmitter released
upon presynaptic stimulation changes over seconds as a function of the neuronal
firing activity. While a consensus has emerged that changes of the synapse
strength are crucial to neuronal computations, their modes of expression in
vivo remain unclear. Recent experimental studies have reported that glial
cells, particularly astrocytes in the hippocampus, are able to modulate
short-term plasticity but the underlying mechanism is poorly understood. Here,
we investigate the characteristics of short-term plasticity modulation by
astrocytes using a biophysically realistic computational model. Mean-field
analysis of the model unravels that astrocytes may mediate counterintuitive
effects. Depending on the expressed presynaptic signaling pathways, astrocytes
may globally inhibit or potentiate the synapse: the amount of released
neurotransmitter in the presence of the astrocyte is transiently smaller or
larger than in its absence. But this global effect usually coexists with the
opposite local effect on paired pulses: with release-decreasing astrocytes most
paired pulses become facilitated, while paired-pulse depression becomes
prominent under release-increasing astrocytes. Moreover, we show that the
frequency of astrocytic intracellular Ca2+ oscillations controls the effects of
the astrocyte on short-term synaptic plasticity. Our model explains several
experimental observations yet unsolved, and uncovers astrocytic
gliotransmission as a possible transient switch between short-term paired-pulse
depression and facilitation. This possibility has deep implications on the
processing of neuronal spikes and resulting information transfer at synapses.Comment: 93 pages, manuscript+supplementary text, 10 main figures, 11
supplementary figures, 1 tabl
Do differences in understory light contribute to species distributions along a tropical rainfall gradient?
In tropical forests, regional differences in annual rainfall correlate with differences in plant species composition. Although water availability is clearly one factor determining species distribution, other environmental variables that covary with rainfall may contribute to distributions. One such variable is light availability in the understory, which decreases towards wetter forests due to differences in canopy density and phenology. We established common garden experiments in three sites along a rainfall gradient across the Isthmus of Panama in order to measure the differences in understory light availability, and to evaluate their influence on the performance of 24 shade-tolerant species with contrasting distributions. Within sites, the effect of understory light availability on species performance depended strongly on water availability. When water was not limiting, either naturally in the wetter site or through water supplementation in drier sites, seedling performance improved at higher light. In contrast, when water was limiting at the drier sites, seedling performance was reduced at higher light, presumably due to an increase in water stress that affected mostly wet-distribution species. Although wetter forest understories were on average darker, wet-distribution species were not more shade-tolerant than dry-distribution species. Instead, wet-distribution species had higher absolute growth rates and, when water was not limiting, were better able to take advantage of small increases in light than dry-distribution species. Our results suggest that in wet forests the ability to grow fast during temporary increases in light may be a key trait for successful recruitment. The slower growth rates of the dry-distribution species, possibly due to trade-offs associated with greater drought tolerance, may exclude these species from wetter forests
Ecological phytochemistry of Cerrado (Brazilian savanna) plants
The Cerrado (the Brazilian savanna) is one of the vegetation formations of great biodiversity in Brazil and it has experienced strong deforestation and fragmentation. The Cerrado must contain at least 12,000 higher plant species.We discuss the ecological relevance of phytochemical studies carried out on plants from the Cerrado, including examples of phytotoxicity, antifungal, insecticidal and antibacterial activities. The results have been classified according to activity and plant family. The most active compounds have been highlighted and other activities are discussed. A large number of complex biochemical interactions occur in this system. However, only a
small fraction of the species has been studied from the phytochemical viewpoint to identify the metabolites
responsible for these interactions
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