“Análise da Eficiência, Eficácia e Mortalidade Empresarial”

Este artigo analisa a eficácia e a eficiência do Programa Leader + e a mortalidade das empresas que beneficiaram de apoio financeiro no âmbito desta política pública, nas regiões Norte e Alentejo, no período de 2000 a 2006. A análise da eficácia e da eficiência incide sobre a totalidade dos projetos de investimento financiados e o estudo da mortalidade empresarial inclui apenas as empresas do sector privado, com atividade e/ou sede nas regiões citadas, que beneficiaram de financiamento. A avaliação da eficácia e da eficiência sustentou-se em indicadores de realização, indicadores de resultado e no rácio input-output. A sustentabilidade da política pública foi avaliada com base nas taxa de mortalidade das empresas e no estudo da relação entre a mortalidade empresarial e as variáveis região de pertença, atividade da empresa e número de sócios. O estudo permitiu encontrar diferenças entre as duas regiões ao nível da eficácia e da eficiência da política pública, bem como ao nível da mortalidade empresarial.

Ingresso e mortalidade de árvores após a colheita de madeira em área de terra firme na Floresta Nacional do Tapajós (PA).

Foram analisados o ingresso e a mortalidade de arvores em uma área explorada na Floresta Nacional do Tapajós na Amazônia brasileira. Ingresso foi considerado como sendo o número de arvores que atingiram 5cm de diâmetro em duas medições consecutivas. Mortalidade foi o número de arvores com DAP (diâmetro a 1,30m do solo) > 5cm encontradas mortas entre duas medições consecutivas. O ingresso aumentou imediatamente após a exploração, mas o gradativo fechamento do dossel da floresta aumentou a taxa de mortalidade, principalmente nas espécies intolerantes a sombra, e nos últimos dez anos a floresta mostrou tendência de equilíbrio entre ingresso e mortalidade. O ingresso de espécies comerciais foi maior do que a mortalidade nos últimos dez anos do período estudado.

MORTALIDADE POR CÂNCER NO ESTADO DE MATO GROSSO DO SUL, BRASIL, NO PERÍODO DE 1998 A 2007

Atualmente, as ferramentas de Sensoriamento Remoto e Geoprocessamento vêm sendo cada vez mais utilizadas em estudos ambientais, socioeconômicos e de eventos relacionados à saúde de forma geral. Desta forma, o objetivo deste trabalho foi analisar a variação geográfica e as tendências temporais da mortalidade por neoplasias malignas no Estado de Mato Grosso do Sul, no período de 1998 a 2007, com o auxílio do geoprocessamento. Os dados de mortalidade foram obtidos a partir do Sistema de Informação de Mortalidade (SIM), disponíveis na Internet. Como produtos sínteses foram gerados mapas temáticos. Na análise de causas de óbitos no período de 1998 a 2007, observou-se que as neoplasias ocupavam o 3º lugar como causas de mortes, correspondendo a 13,78 % das mesmas No referido período, a neoplasia maligna da traquéia, brônquios e pulmões foi a que mais causou óbitos (12%), seguido do câncer de estômago (8,87%). Os cânceres próprios de cada gênero também estão presentes com alta mortalidade, como o câncer de próstata (14,48%) e da traquéia, brônquios e pulmões (14,06%) no sexo masculino e os de mama (13,76%) e colo uterino (7,45%) no sexo feminino. As 10 topografias de maior mortalidade correspondem a 64 % de todas as mortes por câncer.

Mortalidade em plântulas de pepino atacadas pela Liriomyza sativae.

A mosca minadora Liriomyza sativae vem causando sérios prejuízos a diversas culturas de hortaliças, perfurando e abrindo minas nas folhas. Quando o ataque é intenso, há sêca e queda das folhas de plantas desenvolvidas; em plântulas pode ocasionar a morte. Com o objetivo de testar o efeito do uso de armadilha adesiva amarela e do piretroide Decis na redução da mortalidade em plântulas de pepino, foi instalado no campus do CNPDA um experimento em blocos casualizados, com 6 repetições, constando dos seguintes tratamentos: Armadilha passada diariamente, Decis aplicado semanalmente, armadilha diária + Decis semanal e testemunha. O pepino foi foi plantado no espaçamento 1,0 x 0,5 m, cada medindo 6,0 x 3,0 m, com 72 covas. As medias de mortalidades em plântulas/tratamentos foram 5,33, 18,16, 16,66, e 29,66 respectivamente. Não há diferenças significativas ao nível de 5% pelo teste SNK, entre os tratamentos, mas a testemunha diferiu de modo significativo em relação ao tratamento passagem de armadilha. As aplicações de Decis não resultaram em redução significativa da mortalidade em relação a testemunha, talvez devido ao desenvolvimento de resistência dos minadores ao produto.

MORTALIDADE POR CÂNCER NO ESTADO DE MATO GROSSO DO SUL, BRASIL, NO PERÍODO DE 1998 A 2007

Atualmente, as ferramentas de Sensoriamento Remoto e Geoprocessamento vêm sendo cada vez mais utilizadas em estudos ambientais, socioeconômicos e de eventos relacionados à saúde de forma geral. Desta forma, o objetivo deste trabalho foi analisar a variação geográfica e as tendências temporais da mortalidade por neoplasias malignas no Estado de Mato Grosso do Sul, no período de 1998 a 2007, com o auxílio do geoprocessamento. Os dados de mortalidade foram obtidos a partir do Sistema de Informação de Mortalidade (SIM), disponíveis na Internet. Como produtos sínteses foram gerados mapas temáticos. Na análise de causas de óbitos no período de 1998 a 2007, observou-se que as neoplasias ocupavam o 3º lugar como causas de mortes, correspondendo a 13,78 % das mesmas No referido período, a neoplasia maligna da traquéia, brônquios e pulmões foi a que mais causou óbitos (12%), seguido do câncer de estômago (8,87%). Os cânceres próprios de cada gênero também estão presentes com alta mortalidade, como o câncer de próstata (14,48%) e da traquéia, brônquios e pulmões (14,06%) no sexo masculino e os de mama (13,76%) e colo uterino (7,45%) no sexo feminino. As 10 topografias de maior mortalidade correspondem a 64 % de todas as mortes por câncer. Arcgis � o0�X߬ue apresentavam o mesmo conteúdo, com formas de representação diferenciadas, visando avaliar a sua comunicação cartográfica. São apresentados os resultados de análises realizadas por 20 indivíduos selecionados (alunos, professores e não estudantes) que indicaram quais mapas eram mais legíveis em termos de clareza, simplicidade e objetidade de conteúdo. 

Obesity in pregnancy : outcomes and economics

Maternal obesity is an important aspect of reproductive care. It is the commonest risk factor for maternal mortality in developed countries and is also associated with a wide spectrum of adverse pregnancy outcomes. Maternal obesity may have longer-term implications for the health of the mother and infant, which in turn will have economic implications. Efforts to prevent, manage and treat obesity in pregnancy will be costly, but may pay dividends from reduced future economic costs, and subsequent improvements to maternal and infant health. Decision-makers working in this area of health services should understand whether the problem can be reduced, at what cost; and then, what cost savings and health benefits will accrue in the future from a reduction of the problem.

Combining electrospun scaffolds with electrosprayed hydrogels leads to three-dimensional cellularization of hybrid constructs

A common problem in the design of tissue engineered scaffolds using electrospun scaffolds is the poor cellular infiltration into the structure. To tackle this issue, three approaches to scaffold design using electrospinning were investigated: selective leaching of a water-soluble fiber phase (poly ethylene oxide (PEO) or gelatin), the use of micron-sized fibers as the scaffold, and a combination of micron-sized fibers with codeposition of a hyaluronic acid-derivative hydrogel, Heprasil. These designs were achieved by modifying a conventional electrospinning system with two charged capillaries and a rotating mandrel collector. Three types of scaffolds were fabricated: medical grade poly(epsilon-caprolactone)/collagen (mPCL/Col) cospun with PEO or gelatin, mPCL/Col meshes with micron-sized fibers, and mPCL/Col microfibers cosprayed with Heprasil. All three scaffold types supported attachment and proliferation of human fetal osteoblasts. However, selective leaching only marginally improved cellular infiltration when compared to meshes obtained by conventional electrospinning. Better cell penetration was seen in mPCL/Col microfibers, and this effect was more pronounced when Heprasil regions were present in the structure. Thus, such techniques could be further exploited for the design of cell permeable fibrous meshes for tissue engineering applications.

Cell sourcing for bone tissue engineering : amniotic fluid stem cells have a delayed, robust differentiation compared to mesenchymal stem cells

Cell based therapies for bone regeneration are an exciting emerging technology, but the availability of osteogenic cells is limited and an ideal cell source has not been identified. Amniotic fluid-derived stem (AFS) cells and bone-marrow derived mesenchymal stem cells (MSCs) were compared to determine their osteogenic differentiation capacity in both 2D and 3D environments. In 2D culture, the AFS cells produced more mineralized matrix but delayed peaks in osteogenic markers. Cells were also cultured on 3D scaffolds constructed of poly-e-caprolactone for 15 weeks. MSCs differentiated more quickly than AFS cells on 3D scaffolds, but mineralized matrix production slowed considerably after 5 weeks. In contrast, the rate of AFS cell mineralization continued to increase out to 15 weeks, at which time AFS constructs contained 5-fold more mineralized matrix than MSC constructs. Therefore, cell source should be taken into consideration when used for cell therapy, as the MSCs would be a good choice for immediate matrix production, but the AFS cells would continue robust mineralization for an extended period of time. This study demonstrates that stem cell source can dramatically influence the magnitude and rate of osteogenic differentiation in vitro.

The severity of chorioamnionitis in pregnant sheep is associated with in vivo variation of the surface-exposed multiple-banded antigen/gene of ureaplasma parvum

Ureaplasma species are the bacteria most frequently isolated from human amniotic fluid in asymptomatic pregnancies and placental infections. Ureaplasma parvum serovars 3 and 6 are the most prevalent serovars isolated from men and women. We hypothesized that the effects on the fetus and chorioamnion of chronic ureaplasma infection in amniotic fluid are dependent on the serovar, dose, and variation of the ureaplasma multiple banded antigen (MBA) and mba gene. We injected high- or low dose U. parvum serovar 3, serovar 6, or vehicle intra-amniotically into pregnant ewes at 55 days of gestation (term = 150 days) and examined the chorioamnion, amniotic fluid, and fetal lung tissue of animals delivered by cesarean section at 125 days of gestation. Variation of the multiple banded antigen/mba generated by serovar 3 and serovar 6 ureaplasmas in vivo were compared by PCR assay and Western blot. Ureaplasma inoculums demonstrated only one (serovar 3) or two (serovar 6) MBA variants in vitro, but numerous antigenic variants were generated in vivo: serovar 6 passage 1 amniotic fluid cultures contained more MBA size variants than serovar 3 (P = 0.005),and ureaplasma titers were inversely related to the number of variants (P = 0.025). The severity of chorioamnionitis varied between animals. Low numbers of mba size variants (five or fewer) within amniotic fluid were associated with severe inflammation, whereas the chorioamnion from animals with nine or more mba variants showed little or no inflammation. These differences in chorioamnion inflammation may explain why not all women with in utero Ureaplasma spp. experience adverse pregnancy outcomes.

Maternal administration of erythromycin fails to eradicate intrauterine ureaplasma infection in an ovine model

Erythromycin is the standard antibiotic used for treatment of Ureaplasma species during 3 pregnancy; however, maternally administered erythromycin may be ineffective at eliminating 4 intra-amniotic ureaplasma infections. We asked if erythromycin would eradicate intra-amniotic 5 ureaplasma infections in pregnant sheep. At 50 days of gestation (d, term=150d) pregnant ewes 6 received intra-amniotic injections of erythromycin-sensitive U. parvum serovar 3 (n=16) or 10B 7 medium (n=16). At 100d, amniocentesis was performed; five fetal losses (ureaplasma group: 8 n=4; 10B group: n=1) had occurred by this time. Remaining ewes were allocated into treatment 9 subgroups: medium only (M, n=7); medium and erythromycin (M/E, n=8); ureaplasma only (Up, 10 n=6) or ureaplasma and erythromycin (Up/E, n=6). Erythromycin was administered intra11 muscularly (500 mg), eight-hourly for four days (100d-104d). Amniotic fluid samples were 12 collected at 105d. At 125d preterm fetuses were surgically delivered and specimens were 13 collected for culture and histology. Erythromycin was quantified in amniotic fluid by liquid 14 chromatography-mass spectrometry. Ureaplasmas were isolated from the amniotic fluid, 15 chorioamnion and fetal lung of animals from the Up and Up/E groups, however, the numbers of 16 U. parvum recovered were not different between these groups. Inflammation in the 17 chorioamnion, cord and fetal lung was increased in ureaplasma-exposed animals compared to 18 controls, but was not different between the Up and Up/E groups. Erythromycin was detected in 19 amniotic fluid samples, although concentrations were low (<10-76 ng/mL). This study 20 demonstrates that maternally administered erythromycin does not eradicate chronic, intra- amniotic ureaplasma infections or improve fetal outcomes in an ovine model, potentially due to 22 the poor placental passage of erythromycin.

Endochondral ossification in vitro is influenced by mechanical bending

Bone development is influenced by the local mechanical environment. Experimental evidence suggests that altered loading can change cell proliferation and differentiation in chondro- and osteogenesis during endochondral ossification. This study investigated the effects of three-point bending of murine fetal metatarsal bone anlagen in vitro on cartilage differentiation, matrix mineralization and bone collar formation. This is of special interest because endochondral ossification is also an important process in bone healing and regeneration. Metatarsal preparations of 15 mouse fetuses stage 17.5 dpc were dissected en bloc and cultured for 7 days. After 3 days in culture to allow adherence they were stimulated 4 days for 20 min twice daily by a controlled bending of approximately 1000-1500 microstrain at 1 Hz. The paraffin-embedded bone sections were analyzed using histological and histomorphometrical techniques. The stimulated group showed an elongated periosteal bone collar while the total bone length was not different from controls. The region of interest (ROI), comprising the two hypertrophic zones and the intermediate calcifying diaphyseal zone, was greater in the stimulated group. The mineralized fraction of the ROI was smaller in the stimulated group, while the absolute amount of mineralized area was not different. These results demonstrate that a new device developed to apply three-point bending to a mouse metatarsal bone culture model caused an elongation of the periosteal bone collar, but did not lead to a modification in cartilage differentiation and matrix mineralization. The results corroborate the influence of biophysical stimulation during endochondral bone development in vitro. Further experiments with an altered loading regime may lead to more pronounced effects on the process of endochondral ossification and may provide further insights into the underlying mechanisms of mechanoregulation which also play a role in bone regeneration.

Changes in resting and walking energy expenditure and walking speed during pregnancy in obese women

Background Energy conserving processes reported in undernourished women during pregnancy are a recognised strategy to provide energy required to support fetal development. Women who are obese before conceiving arguably have sufficient fat stores to support the energy demands of pregnancy without the need to provoke energy conserving mechanisms. Objective We tested the hypothesis that obese women would demonstrate behavioural adaptation (i.e. decrease in self-selected walking (SSW) speed) but not metabolic compensation (i.e. decrease in resting metabolic rate (RMR) or metabolic cost of walking) during gestation. Design RMR, SSW speed, metabolic cost of walking, and anthropometry were measured in 23 women (BMI: 33.6 ± 2.5 kg/m2; 31 ± 4 years) at approximately weeks 15 (wk 15) and 30 (wk 30) of gestation. RMR was also measured in two cohorts of non-pregnant controls matched for age, weight and height of the pregnant cohort at wk 15 (N=23) and wk 30 (N=23). Results GWG varied widely (11.3 ± 5.4 kg) and 52% of women gained more weight than is recommended. RMR increased significantly by an average 177 ± 176 kcal/d (11±12%; P<0.0001); however the within-group variability was large. Both the metabolic cost of walking and SSW speed decreased significantly (P<0.01). While RMR increased in >80% of the cohort, the net oxygen cost of walking decreased in the same proportion of women. Conclusions While the increase in RMR was greater than was explained by weight gain, there was evidence of both behavioural and biological compensation in the metabolic cost of walking in obese women during gestation.

Maternal exposure to ambient temperature and the risk of preterm birth and stillbirth in Brisbane, Australia

Almost 10% of all births are preterm and 2.2% are stillbirths globally. Recent research has suggested that environmental factors may be a contributory cause to these adverse birth outcomes. The authors examined the relationship between ambient temperature and preterm birth and stillbirth in Brisbane, Australia between 2005 and 2009 (n = 101,870). They used a Cox proportional hazard model with live birth and stillbirth as competing risks. They also examined if there were periods of the pregnancy where exposure to high temperatures had a greater effect. Exposure to higher ambient temperatures during pregnancy increased the risk of stillbirth. The hazard ratio for stillbirth was 0.3 at 12 °C relative to the reference temperature at 21 °C. The temperature effect was greatest for fetuses of less than 36 weeks of gestation. There was an association between higher temperature and shorter gestation, as the hazard ratio for live birth was 0.96 at 15 °C and 1.02 at 25 °C. This effect was greatest at later gestational ages. The results provide strong evidence of an association between increased temperature and increased risk of stillbirth and shorter gestations.