344 research outputs found
Etiology of Severe Non-malaria Febrile Illness in Northern Tanzania: A Prospective Cohort Study.
The syndrome of fever is a commonly presenting complaint among persons seeking healthcare in low-resource areas, yet the public health community has not approached fever in a comprehensive manner. In many areas, malaria is over-diagnosed, and patients without malaria have poor outcomes. We prospectively studied a cohort of 870 pediatric and adult febrile admissions to two hospitals in northern Tanzania over the period of one year using conventional standard diagnostic tests to establish fever etiology. Malaria was the clinical diagnosis for 528 (60.7%), but was the actual cause of fever in only 14 (1.6%). By contrast, bacterial, mycobacterial, and fungal bloodstream infections accounted for 85 (9.8%), 14 (1.6%), and 25 (2.9%) febrile admissions, respectively. Acute bacterial zoonoses were identified among 118 (26.2%) of febrile admissions; 16 (13.6%) had brucellosis, 40 (33.9%) leptospirosis, 24 (20.3%) had Q fever, 36 (30.5%) had spotted fever group rickettsioses, and 2 (1.8%) had typhus group rickettsioses. In addition, 55 (7.9%) participants had a confirmed acute arbovirus infection, all due to chikungunya. No patient had a bacterial zoonosis or an arbovirus infection included in the admission differential diagnosis. Malaria was uncommon and over-diagnosed, whereas invasive infections were underappreciated. Bacterial zoonoses and arbovirus infections were highly prevalent yet overlooked. An integrated approach to the syndrome of fever in resource-limited areas is needed to improve patient outcomes and to rationally target disease control efforts
BPIFB1 (LPLUNC1) is upregulated in cystic fibrosis lung disease
Although the biology the PLUNC (recently renamed BPI fold, BPIF) family of secreted proteins is poorly understood, multiple array based studies have suggested that some are differentially expressed in lung diseases. We have examined the expression of BPIFB1 (LPLUNC1), the prototypic two-domain containing family member, in lungs from CF patients and in mouse models of CF lung disease. BPIFB1 was localized in CF lung samples along with BPIFA1, MUC5AC, CD68 and NE and directly compared to histologically normal lung tissues and that of bacterial pneumonia. We generated novel antibodies to mouse BPIF proteins to conduct similar studies on ENaC transgenic (ENaC-Tg) mice, a model for CF-like lung disease. Small airways in CF demonstrated marked epithelial staining of BPIFB1 in goblet cells but staining was absent from alveolar regions. BPIFA1 and BPIFB1 were not co-localised in the diseased lungs. In ENaC-Tg mice there was strong staining of both proteins in the airways and luminal contents. This was most marked for BPIFB1 and was noted within 2 weeks of birth. The two proteins were present in distinct cells within epithelium. BPIFB1 was readily detected in BAL from ENaC-Tg mice but was absent from wild-type mice. Alterations in the expression of BPIF proteins is associated with CF lung disease in humans and mice. It is unclear if this elevation of protein production, which results from phenotypic alteration of the cells within the diseased epithelium, plays a role in the pathogenesis of the disease
Effects of Net Depth Reduction to Bigeye Tuna (Thunnus obesus) Catch
Analysis on the catch of Bigeye tuna (Thunnus obesus) from purse seine and ring nets of various net depths was conducted to assess the effect of reducing net depth as a compatible measure the Philippines has implemented and reducing the catch of Bigeye in its internal waters and the Exclusive Economic Zone (EEZ). The study was based on observer reports from ring net and purse seine fishing vessels operating in internal waters and EEZ as well as from group seine operations in the high seas pocket 1. Nets were classed by depth to determine and compare variations on the catch of Bigeye, catch rates and relative proportion, species composition, and fishing grounds. Results indicated that the catch of Bigeye is correlated with the depth of net, with a significantly higher catch of Bigeye in deeper nets. The result of the study is consistent with other studies elsewhere, and in consonance with the implementation of Fisheries Administrative Order 236 limiting the depth to 115 fathoms for ring net and purse seine operating in Philippine internal waters and the EEZ as a compatible measure to reduce the catch of Bigeye
Functional mechanisms underlying pleiotropic risk alleles at the 19p13.1 breast-ovarian cancer susceptibility locus
A locus at 19p13 is associated with breast cancer (BC) and ovarian cancer (OC) risk. Here we analyse 438 SNPs in this region in 46,451 BC and 15,438 OC cases, 15,252 BRCA1 mutation carriers and 73,444 controls and identify 13 candidate causal SNPs associated with serous OC (P=9.2 × 10-20), ER-negative BC (P=1.1 × 10-13), BRCA1-associated BC (P=7.7 × 10-16) and triple negative BC (P-diff=2 × 10-5). Genotype-gene expression associations are identified for candidate target genes ANKLE1 (P=2 × 10-3) and ABHD8 (P<2 × 10-3). Chromosome conformation capture identifies interactions between four candidate SNPs and ABHD8, and luciferase assays indicate six risk alleles increased transactivation of the ADHD8 promoter. Targeted deletion of a region containing risk SNP rs56069439 in a putative enhancer induces ANKLE1 downregulation; and mRNA stability assays indicate functional effects for an ANKLE1 3′-UTR SNP. Altogether, these data suggest that multiple SNPs at 19p13 regulate ABHD8 and perhaps ANKLE1 expression, and indicate common mechanisms underlying breast and ovarian cancer risk
Impure Public Goods and Technological Interdependencies
Impure public goods represent an important group of goods. Almost every public good exerts not only effects which are public to all but also effects which are private to the producer of this good. What is often omitted in the analysis of impure public goods is the fact that – regularly – these private effects can also be generated independently of the public good. In our analysis we focus on the effects alternative technologies – independently generating the private effects of the public good – may have on the provision of impure public goods. After the investigation in an analytical impure public good model, we numerically simulate the effects of alternative technologies in a parameterized model for climate policy in Germany
Adoption of new health products in low and middle income settings: how product development partnerships can support country decision making
When a new health product becomes available, countries have a choice to adopt the product into their national health systems or to pursue an alternate strategy to address the public health problem. Here, we describe the role for product development partnerships (PDPs) in supporting this decision-making process. PDPs are focused on developing new products to respond to health problems prevalent in low and middle income settings. The impact of these products within public sector health systems can only be realized after a country policy process. PDPs may be the organizations most familiar with the evidence which assists decision making, and this generally translates into involvement in international policy development, but PDPs have limited reach into endemic countries. In a few individual countries, there may be more extensive involvement in tracking adoption activities and generating local evidence. This local PDP involvement begins with geographical prioritization based on disease burden, relationships established during clinical trials, PDP in-country resources, and other factors. Strategies adopted by PDPs to establish a presence in endemic countries vary from the opening of country offices to engagement of part-time consultants or with long-term or ad hoc committees. Once a PDP commits to support country decision making, the approaches vary, but include country consultations, regional meetings, formation of regional, product-specific committees, support of in-country advocates, development of decision-making frameworks, provision of technical assistance to aid therapeutic or diagnostic guideline revision, and conduct of stakeholder and Phase 4 studies. To reach large numbers of countries, the formation of partnerships, particularly with WHO, are essential. At this early stage, impact data are limited. But available evidence suggests PDPs can and do play an important catalytic role in their support of country decision making in a number of target countries
Dise?o y construcci?n de la habilitaci?n urbano industrial del Complejo Maderero de Pucallpa
El proyecto denominado ?Dise?o y construcci?n de la habilitaci?n urbano industrial del Complejo Maderero de Pucallpa, responde a atender la necesidad de contar con infraestructura para el uso de lotes industriales que impulsen la cadena de valor de la transformaci?n de la madera en la Regi?n Ucayali. Para el desarrollo del presente Proyecto se ha aplicado las buenas pr?cticas del PMBOOK 6ta. Edici?n, siendo el alcance del Proyecto desde la elaboraci?n de estudios previos, el desarrollo del dise?o de Habilitaci?n Urbana, la elaboraci?n del expediente t?cnico, gesti?n y tramitaci?n de certificados y licencia, hasta la procura y ejecuci?n de las obras de habilitaci?n urbana industrial que albergue 134 lotes industriales en 17 manzanas, distribuidos en 04 sectores, con cerco perimetral y p?rtico de ingreso, as? como la construcci?n de un edificio administrativo de dos pisos. EL plazo de ejecuci?n es de veintiocho (28) meses, con un monto de inversi?n de US 25,148,000, desarroll?ndose dentro de un terreno con un ?rea de 51 has, activo de propiedad del principal stakeholder la Asociaci?n de Madereros de Pucallpa. Cuenta con un plan de acci?n de mitigaci?n y reserva de contingencia, basado en la identificaci?n de los riesgos principales del proyecto
CUTTING PREFERENCE OF Acromyrmex crassispinus (FOREL, 1909) AND Acromyrmex ambiguus (EMERY, 1887) (HYMENOPTERA: FORMICIDAE) BY DIFFERENT EUCALYPT SPECIES IN LABORATORY
A busca por novos m\ue9todos de manejo e controle de
formigas-cortadeiras vem sendo enfoque de in\ufameros estudos pelo
pa\ueds, impulsionada por aspectos econ\uf4micos e ambientais. O
estabelecimento de esp\ue9cies resistentes ou menos preferidas ao
corte pode contribuir substancialmente neste sentido. Logo, o objetivo
deste estudo foi avaliar a prefer\ueancia de corte entre as
esp\ue9cies Corymbia citriodora , Eucalyptus benthamii , Eucalyptus
camaldulensis , Eucalyptus dunnii , Eucalyptus globulus e
h\uedbrido de Eucalyptus urophylla X Eucalyptus grandis por
Acromyrmex ambiguus e Acromyrmex crassispinus em laborat\uf3rio.
Para isso, folhas foram ofertadas, simultaneamente, para seis
col\uf4nias de cada esp\ue9cie em bioensaios com chance de escolha.
No entanto, nos testes sem chance de escolha, apenas as esp\ue9cies
menos preferidas pelo teste anterior foram utilizadas. Para Acromyrmex
crassispinus, as esp\ue9cies Eucalyptus camaldulensis e h\uedbrido
de Eucalyptus urophylla X Eucalyptus grandis foram mais cortadas,
enquanto que as esp\ue9cies Corymbia citriodora, Eucalyptus dunnii e
Eucalyptus globulus foram menos preferidas ao corte. Acromyrmex
ambiguus apresentou padr\ue3o similar de prefer\ueancia,
adicionando-se Eucalyptus benthamii entre as mais preferidas e
excluindo-se Eucalyptus dunnii das menos preferidas.The search for new leafcutter ant management and control methods have
been the aim of several studies over the country, propelled by economic
and environmental aspects. The establishment of resistant or less
preferred species for the cut can contribute substantially in this
subject. This way, the objective of this study was to evaluate the
cutting preference between the species Corymbia citriodora ,
Eucalyptus benthamii , Eucalyptus camaldulensis , Eucalyptus dunnii
, Eucalyptus globulus and h\uedbrido de Eucalyptus urophylla X
Eucalyptus grandis by Acromyrmex ambiguus and Acromyrmex
crassispinus in laboratory. Therefore, leafs were offered
simultaneously to six colonies of each species in bioassays with chance
to choose. However, in the tests without chance to choose, only the
least preferred species in the previous test were utilized. For
Acromyrmex crassispinus, the species Eucalyptus camaldulensis and
h\uedbrido de Eucalyptus urophylla X Eucalyptus grandis were the most
cutted, besides Corymbia citriodora, Eucalyptus dunni and Eucalyptus
globules were less preferred. Acromyrmex ambiguus showed similar
preference pattern, adding Eucalyptus benthamii among the most
preferred one and excluding Eucalyptus dunnii from the least preferred
Molecular pedomorphism underlies craniofacial skeletal evolution in Antarctic notothenioid fishes
Background
Pedomorphism is the retention of ancestrally juvenile traits by adults in a descendant taxon. Despite its importance for evolutionary change, there are few examples of a molecular basis for this phenomenon. Notothenioids represent one of the best described species flocks among marine fishes, but their diversity is currently threatened by the rapidly changing Antarctic climate. Notothenioid evolutionary history is characterized by parallel radiations from a benthic ancestor to pelagic predators, which was accompanied by the appearance of several pedomorphic traits, including the reduction of skeletal mineralization that resulted in increased buoyancy. Results
We compared craniofacial skeletal development in two pelagic notothenioids, Chaenocephalus aceratus and Pleuragramma antarcticum, to that in a benthic species, Notothenia coriiceps, and two outgroups, the threespine stickleback and the zebrafish. Relative to these other species, pelagic notothenioids exhibited a delay in pharyngeal bone development, which was associated with discrete heterochronic shifts in skeletal gene expression that were consistent with persistence of the chondrogenic program and a delay in the osteogenic program during larval development. Morphological analysis also revealed a bias toward the development of anterior and ventral elements of the notothenioid pharyngeal skeleton relative to dorsal and posterior elements. Conclusions
Our data support the hypothesis that early shifts in the relative timing of craniofacial skeletal gene expression may have had a significant impact on the adaptive radiation of Antarctic notothenioids into pelagic habitats
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