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1.
Mar Environ Res ; 191: 106162, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37716281

RESUMO

Habitat provisioning, and the biodiversity within, is considered a type of "supporting" ecosystem service. Ecosystem services are the benefits humans receive from healthy ecosystems. We assess whether kelp (Saccharina spp.) farms provide seasonal habitat for wild organisms. Contrary to other studies conducted in tropic seaweed farms, we did not observe habitat provisioning or increased biodiversity at seasonal temperate seaweed farm sites compared to neighboring non-farm sites, which is encouraging news for the aquaculture industry given that most farm gear is removed from the water after the spring harvest. We quantified fish and crustaceans interacting with kelp farms using GoPro cameras. We also assessed small (<5 mm) invertebrates using mesh settling devices suspended at the same depth as kelp lines (2m). Visual surveys were paired with eDNA. There was coherence in the conclusions drawn from observational and eDNA methods, despite weak coherence in the specific species identified between the methods. Both farm and non-farm sites exhibited higher species richness and biodiversity in the summer non-growing season compared to the winter growing season, attributed to expected seasonal species movements.

2.
Syst Biodivers ; 21(1)2023.
Artigo em Inglês | MEDLINE | ID: mdl-38523662

RESUMO

Northern bog lemmings, Mictomys (Synaptomys) borealis, are currently being assessed for protections under the U.S. Endangered Species Act. A major impediment to comprehensive evaluation is a deficiency of data towards understanding the biology of these rodents. Inherent rarity and scarce specimen sampling, despite a continent-wide distribution, has precluded our ability to implement modern methods for resolving taxonomy, evolutionary history, and investigating multiple other species traits. Here we use a maternally inherited locus (mitochondrial cytochrome b) and between 5,939 and 11,513 nuclear loci from reduced representation sequencing (ddRADseq) to investigate the evolutionary history of northern bog lemmings. We 1) qualify evidence based on morphological and early molecular studies for the genus assignment of Mictomys, 2) test the validity of multiple sub-species designations, 3) provide spatial and temporal historical biogeographic perspectives, and 4) discuss how incomplete sampling might influence conservation efforts. Both mitochondrial and nuclear datasets exhibit deep divergence and paraphyly between two recognized species, the northern (Mictomys borealis) and southern (Synaptomys cooperi) bog lemmings. Based on mtDNA, the geographically isolated subspecies (M. b. sphagnicola) was found to be divergent from all other specimens. The remainder of the species exhibited shallow intra-specific differentiation in mtDNA, however nuclear data supports genetic distinction consistent with four geographic subspecies. Recent coalescence of all northern bog lemmings (except for M. b. sphagnicola) reflects divergence in multiple refugia through the last glacial cycle, including a well-known coastal center of endemism and multiple regions south of continental ice-sheets. Regional lineages across North America suggest strong latitudinal displacement with global climate change, coupled with isolation-reconnection dynamics. This taxon suffers from a lack of modern samples through most of its distribution, severely limiting interpretation of ongoing evolutionary processes, particularly in southern portions of the species' range. Limited voucher specimen sampling of vulnerable populations could aid in rigorous conservation decision-making.

3.
BMC Ecol Evol ; 22(1): 14, 2022 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-35130838

RESUMO

BACKGROUND: Environmental DNA (eDNA) is an effective tool for the detection and monitoring of presence or absence of rare and invasive species. These techniques have been extended to quantify biomass in vertebrates, particularly in fish species. However, the efficacy of eDNA techniques to quantify biomass in invertebrate species has rarely been examined. This study tested whether eDNA could be used to determine the biomass of the world-wide invasive green crab, Carcinus maenas. In a controlled laboratory study, the relationship between biomass and C. maenas eDNA concentration was examined in the context of different biotic (activity) and abiotic (temperature) parameters. RESULTS: When incubating different numbers of crabs in sterile saltwater for up to 7 days, a relationship between eDNA concentration and biomass was observed at temperatures of 6.7 â„ƒ and 18.7 â„ƒ, but not at 12.8 â„ƒ. Additionally, motor activity, aggression level, time of sampling, and features of organismal decay had significant impact on the concentration of C. maenas eDNA collected. CONCLUSIONS: We show that eDNA concentration did not correlate with biomass, and that biomass, temperature, organismal characteristics, and potentially many more parameters affect shedding and degradation rates for eDNA in this species, thus, impacting the recoverable eDNA concentration. Therefore, eDNA techniques are not likely to provide a reliable signal of biomass in the invasive invertebrate species C. maenas.


Assuntos
Braquiúros , DNA Ambiental , Animais , Biomassa , Braquiúros/genética , DNA Ambiental/genética , Peixes/genética , Espécies Introduzidas
4.
Cancers (Basel) ; 13(5)2021 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-33804477

RESUMO

Both EGFR and VEGFR2 frequently overexpress in TNBC and cooperate with each other in autocrine and paracrine manner to enhance tumor growth and angiogenesis. Therapeutic mAbs targeting EGFR (cetuximab) and VEGFR2 (ramucirumab) are approved by FDA for numerous cancer indications, but none of them are approved to treat breast cancers. TNBC cells secrete VEGF-A, which mediates angiogenesis on endothelial cells in a paracrine fashion, as well as promotes cancer cell growth in autocrine manner. To disrupt autocrine/paracrine loop in TNBC models in addition to mediating anti-EGFR tumor growth signaling and anti-VEGFR2 angiogenic pathway, we generated a BsAb co-targeting EGFR and VEGFR2 (designated as anti-EGFR/VEGFR2 BsAb), using publicly available sequences in which cetuximab IgG backbone is connected to the single chain variable fragment (scFv) of ramucirumab via a glycine linker. Physiochemical characterization data shows that anti-EGFR/VEGFR2 BsAb binds to both EGFR and VEGFR2 in a similar binding affinity comparable to parental antibodies. Anti-EGFR/VEGFR2 BsAb demonstrates in vitro and in vivo anti-tumor activity in TNBC models. Mechanistically, anti-EGFR/VEGFR2 BsAb not only directly inhibits both EGFR and VEGFR2 in TNBC cells but also disrupts autocrine mechanism in TNBC xenograft mouse model. Furthermore, anti-EGFR/VEGFR2 BsAb inhibits ligand-induced activation of VEGFR2 and blocks paracrine pathway mediated by VEGF secreted from TNBC cells in endothelial cells. Collectively, our novel findings demonstrate that anti-EGFR/VEGFR2 BsAb inhibits tumor growth via multiple mechanisms of action and warrants further investigation as a targeted antibody therapeutic for the treatment of TNBC.

5.
Bioorg Med Chem Lett ; 37: 127842, 2021 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-33556575

RESUMO

A series of novel indolyl-α-keto-1,3,4-oxadiazole derivatives have been synthesized by employing molecular iodine-mediated oxidative cyclization of acylhydrazones. In vitro anti cell proliferation activity of these derivatives against various cancer cells lines such as human lymphoblast (U937), leukemia (Jurkat & SB) and human breast (BT474) was investigated. Among the synthesized indolyl-α-keto-1,3,4-oxadiazoles 19a-p, only one compound (19e) exhibited significant antiproliferative activity against a panel of cell lines. The compound 19e with 3,4,5-trimethoxyphenyl motif, endowed strong cytotoxicity against U937, Jurkat, BT474 and SB cancer cells with IC50 values of 7.1, 3.1, 4.1, and 0.8 µM, respectively. Molecular docking studies suggested a potential binding mode for 19e in the colchicine binding site of tubulin. When tested for in vitro tubulin polymerizaton, 19e inhibited tubulin polymezations (IC50 = 10.66 µM) and induced apoptosis through caspase 3/7 activation. Further, the derivative 19e did not cause necrosis when measured using lactate dehydrogenase assay.


Assuntos
Antineoplásicos/farmacologia , Oxidiazóis/farmacologia , Moduladores de Tubulina/farmacologia , Tubulina (Proteína)/metabolismo , Antineoplásicos/síntese química , Antineoplásicos/química , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Relação Dose-Resposta a Droga , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Estrutura Molecular , Oxidiazóis/síntese química , Oxidiazóis/química , Polimerização/efeitos dos fármacos , Relação Estrutura-Atividade , Moduladores de Tubulina/síntese química , Moduladores de Tubulina/química
6.
J Health Econ ; 63: 128-144, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30578962

RESUMO

In 2008, Brazil's conditional cash transfer program expanded to cover a wider range of ages. Poor families are now given stipends for their children's school attendance up to age seventeen, whereas prior the maximum age was fifteen. Using a nationally representative household survey, we estimate the impact of this policy on teen fertility with a triple difference analysis on the fertility outcomes of treated cohorts vs. non-treated cohorts based on income eligibility, age eligibility, and timing of program implementation. We find a three percentage point drop in fertility among eligible teens within five years of program implementation. This offsets the difference in fertility between poor and non-poor teens. The impact is concentrated in urban areas, with no program effects found in rural areas. We are able to replicate these findings using National Birth Registry Data.


Assuntos
Coeficiente de Natalidade , Adolescente , Fatores Etários , Brasil , Feminino , Humanos , Renda , Modelos Estatísticos , Gravidez , Gravidez na Adolescência/prevenção & controle , Assistência Pública/economia , Assistência Pública/organização & administração , Assistência Pública/estatística & dados numéricos
7.
Cardiovasc Pathol ; 25(6): 515-520, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27683962

RESUMO

BACKGROUND AND AIMS: Morbid obesity generally has been associated with higher morbidity and mortality for a variety of diseases. However, a number of exceptions to this have been reported and referred to as the "obesity paradox." The purpose of the present study was to obtain objective data on aortic atherosclerosis and its relationship to body mass index (BMI, kg/m2), based on autopsy findings in a large cohort of overweight and obese decedents. METHODS: Decedents were ≥18 years who had autopsies between 2003 and 2014, a subset of whom were morbidly obese (BMI≥40). Autopsy findings were reviewed and compared to a control group (BMI<40) who had consecutive autopsies performed between January 2013 and June 2014. Atherosclerosis was assessed by gross pathologic examination using a semiquantitative grading scale (from 0 to 3), and for statistical analysis, the scores were stratified into two groups: nonsevere (<2) or severe (≥2). RESULTS: There were 304 decedents in the study: 66 were morbidly obese (BMI≥40), 94 were either Class I or II obese (BMI 30-40), 127 were either overweight (BMI 25.0-29.9) or normal weight (BMI 20-24.9), and 17 were underweight (BMI<20). Decedents with mild atherosclerosis were significantly younger than those with severe disease (55.2 vs. 67.3, P<.0001). Decedents were further stratified by age and BMI. Univariate analysis revealed that decedents >60 years were more likely to have severe atherosclerosis than those ≤60 years (61% vs. 30%, P<.0001). There was a highly significant (P=.008) inverse relationship between severe aortic atherosclerosis and BMI. Twenty of 66 decedents (30%) with a BMI≥40 had severe atherosclerosis vs. 122 of 238 decedents (51%) with BMIs<40 (P=.001). As BMI increased, the probability of developing severe disease decreased. Hypertension increased the probability of having severe atherosclerosis (54% vs. 33%, P=.007). After adjusting for other covariates, multivariable analysis revealed that age and hypertension were still positively correlated with the severity of atherosclerosis (P=.014 and 0.028, respectively), and the inverse relationship between BMI and atherosclerosis remained (adjusted relative risk of BMI≥40 vs. <40=0.64, 95% confidence interval: 0.4-1; P=.03). CONCLUSIONS: Our data extend the previously described obesity paradox to another disease entity, atherosclerosis of the aorta. Morbid obesity appeared to have a protective effect for developing severe aortic atherosclerosis, for the reasons for which are yet to be determined. However, the mean age at death of decedents with BMIs≥40 was younger than those with BMIs in the 20-30 range (55.9 vs. 63.2 years, P=.001), confirming that morbid obesity was not associated with increased longevity.


Assuntos
Doenças da Aorta/epidemiologia , Aterosclerose/epidemiologia , Obesidade Mórbida/epidemiologia , Adulto , Idoso , Autopsia , Índice de Massa Corporal , Feminino , Humanos , Hipertensão/epidemiologia , Masculino , Pessoa de Meia-Idade , Adulto Jovem
8.
Trans R Soc Trop Med Hyg ; 110(3): 199-206, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26884501

RESUMO

BACKGROUND: Despite the efforts of the National Tuberculosis Programme, TB cure rates in Brazil are sub-optimal. The End TB Strategy for post-2015 identifies conditional cash transfer interventions as powerful tools to improve TB control indicators, including TB cure rate. This study aims to inform the new policy by evaluating the role of the Bolsa Familia Programme (BFP), one of the largest conditional cash transfer programmes in the world, on TB cure rates in Brazil. METHODS: We undertook a retrospective cohort study, based on an unprecedented record linkage of socioeconomic and health data, to compare cases of patients newly diagnosed with TB in 2010 receiving BFP cash benefits (n=5788) with those who did not (n=1467) during TB treatment. We used Poisson regression with robust variance to estimate the relative risks for TB cure adjusted for known confounders. RESULTS: The cure rate among patients exposed to BFP during TB treatment was 82.1% (4752/5788), 5.2% higher than among those not exposed. This was confirmed after controlling for TB type, diabetes mellitus, HIV status and other relevant clinical and socioeconomic covariates (RR=1.07, 95% CI 1.04 to 1.11 for cure rates among BFP beneficiaries). This association seemed higher for patients not under directly observed treatment (RR=1.11; 95% CI 1.05 to 1.16). CONCLUSIONS: Although further research is needed, this study suggests that conditional cash transfer programmes can contribute to improve TB cure rate in Brazil.


Assuntos
Financiamento da Assistência à Saúde , Assistência Pública , Tuberculose Pulmonar/prevenção & controle , Adolescente , Adulto , Brasil , Criança , Feminino , Programas Governamentais , Humanos , Masculino , Registro Médico Coordenado , Pessoa de Meia-Idade , Áreas de Pobreza , Análise de Regressão , Estudos Retrospectivos , Fatores Socioeconômicos , Tuberculose Pulmonar/terapia , Adulto Jovem
9.
PLoS One ; 11(2): e0147798, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26886299

RESUMO

Scavengers and decomposers provide an important ecosystem service by removing carrion from the environment. Scavenging and decomposition are known to be temperature-dependent, but less is known about other factors that might affect carrion removal. We conducted an experiment in which we manipulated combinations of patch connectivity and carcass type, and measured responses by local scavenger guilds along with aspects of carcass depletion. We conducted twelve, 1-month trials in which five raccoon (Procyon lotor), Virginia opossum (Didelphis virginiana), and domestic rabbit (Oryctolagus spp.) carcasses (180 trials total) were monitored using remote cameras in 21 forest patches in north-central Indiana, USA. Of 143 trials with complete data, we identified fifteen species of vertebrate scavengers divided evenly among mammalian (N = 8) and avian species (N = 7). Fourteen carcasses (9.8%) were completely consumed by invertebrates, vertebrates exhibited scavenging behavior at 125 carcasses (87.4%), and four carcasses (2.8%) remained unexploited. Among vertebrates, mammals scavenged 106 carcasses, birds scavenged 88 carcasses, and mammals and birds scavenged 69 carcasses. Contrary to our expectations, carcass type affected the assemblage of local scavenger guilds more than patch connectivity. However, neither carcass type nor connectivity explained variation in temporal measures of carcass removal. Interestingly, increasing richness of local vertebrate scavenger guilds contributed moderately to rates of carrion removal (≈6% per species increase in richness). We conclude that scavenger-specific differences in carrion utilization exist among carcass types and that reliable delivery of carrion removal as an ecosystem service may depend on robust vertebrate and invertebrate communities acting synergistically.


Assuntos
Cadeia Alimentar , Carne , Animais , Comportamento Alimentar , Geografia , Indiana , Vertebrados/fisiologia
10.
Inj Prev ; 22(4): 233-8, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26728008

RESUMO

BACKGROUND: Vietnam's 2007 comprehensive motorcycle helmet policy increased helmet use from about 30% of riders to about 93%. We aimed to simulate the effect that this legislation might have on: (a) road traffic deaths and non-fatal injuries, (b) individuals' direct acute care injury treatment costs, (c) individuals' income losses from missed work and (d) individuals' protection against medical impoverishment. METHODS AND FINDINGS: We used published secondary data from the literature to perform a retrospective extended cost-effectiveness analysis simulation study of the policy. Our model indicates that in the year following its introduction a helmet policy employing standard helmets likely prevented approximately 2200 deaths and 29 000 head injuries, saved individuals US$18 million in acute care costs and averted US$31 million in income losses. From a societal perspective, such a comprehensive helmet policy would have saved $11 000 per averted death or $830 per averted non-fatal injury. In terms of financial risk protection, traffic injury is so expensive to treat that any injury averted would necessarily entail a case of catastrophic health expenditure averted. CONCLUSIONS: The high costs associated with traffic injury suggest that helmet legislation can decrease the burden of out-of-pocket payments and reduced injuries decrease the need for access to and coverage for treatment, allowing the government and individuals to spend resources elsewhere. These findings suggest that comprehensive motorcycle helmet policies should be adopted by low-income and middle-income countries where motorcycles are pervasive yet helmet use is less common.


Assuntos
Acidentes de Trânsito/economia , Lesões Encefálicas Traumáticas/prevenção & controle , Traumatismos Craniocerebrais/prevenção & controle , Dispositivos de Proteção da Cabeça , Gastos em Saúde/estatística & dados numéricos , Motocicletas/legislação & jurisprudência , Acidentes de Trânsito/estatística & dados numéricos , Lesões Encefálicas Traumáticas/economia , Lesões Encefálicas Traumáticas/epidemiologia , Análise Custo-Benefício , Traumatismos Craniocerebrais/economia , Traumatismos Craniocerebrais/epidemiologia , Regulamentação Governamental , Dispositivos de Proteção da Cabeça/estatística & dados numéricos , Política de Saúde , Humanos , Renda , Pobreza , Estudos Retrospectivos , Vietnã/epidemiologia
11.
Health Policy Plan ; 31(1): 75-82, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25841771

RESUMO

The South African Government recently set targets to reduce cardiovascular disease (CVD) by lowering salt consumption. We conducted an extended cost-effectiveness analysis (ECEA) to model the potential health and economic impacts of this salt policy. We used surveys and epidemiologic studies to estimate reductions in CVD resulting from lower salt intake. We calculated the average out-of-pocket (OOP) cost of CVD care, using facility fee schedules and drug prices. We estimated the reduction in OOP expenditures and government subsidies due to the policy. We estimated public and private sector costs of policy implementation. We estimated financial risk protection (FRP) from the policy as (1) cases of catastrophic health expenditure (CHE) averted or (2) cases of poverty averted. We also performed a sensitivity analysis. We found that the salt policy could reduce CVD deaths by 11%, with similar health gains across income quintiles. The policy could save households US$ 4.06 million (2012) in OOP expenditures (US$ 0.29 per capita) and save the government US$ 51.25 million in healthcare subsidies (US$ 2.52 per capita) each year. The cost to the government would be only US$ 0.01 per capita; hence, the policy would be cost saving. If the private sector food reformulation costs were passed on to consumers, food expenditures would increase by <0.2% across all income quintiles. Preventing CVD could avert 2400 cases of CHE or 2000 cases of poverty yearly. Our results were sensitive to baseline CVD mortality rates and the cost of treatment. We conclude that, in addition to health gains, population salt reduction can have positive economic impacts-substantially reducing OOP expenditures and providing FRP, particularly for the middle class. The policy could also provide large government savings on health care.


Assuntos
Doenças Cardiovasculares/prevenção & controle , Análise Custo-Benefício , Pobreza , Política Pública/economia , Política Pública/legislação & jurisprudência , Sódio na Dieta/administração & dosagem , Adulto , Feminino , Financiamento Pessoal , Inquéritos Epidemiológicos , Humanos , Masculino , África do Sul
12.
BMC Public Health ; 15: 1183, 2015 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-26612044

RESUMO

BACKGROUND: The burden of cardiovascular disease (CVD) and CVD risk conditions is rapidly increasing in low- and middle-income countries, where health systems are generally ill-equipped to manage chronic disease. Policy makers need an understanding of the magnitude and drivers of the costs of cardiovascular disease related conditions to make decisions on how to allocate limited health resources. METHODS: We undertook a systematic review of the published literature on provider-incurred costs of treatment for cardiovascular diseases and risk conditions in low- and middle-income countries. Total costs of treatment were inflated to 2012 US dollars for comparability across geographic settings and time periods. RESULTS: This systematic review identified 60 articles and 143 unit costs for the following conditions: ischemic heart disease, non-ischemic heart diseases, stroke, heart failure, hypertension, diabetes, and chronic kidney disease. Cost data were most readily available in middle-income countries, especially China, India, Brazil, and South Africa. The most common conditions with cost studies were acute ischemic heart disease, type 2 diabetes mellitus, stroke, and hypertension. CONCLUSIONS: Emerging economies are currently providing a base of cost evidence for NCD treatment that may prove useful to policy-makers in low-income countries. Initial steps to publicly finance disease interventions should take account of costs. The gaps and limitations in the current literature include a lack of standardized reporting as well as sparse evidence from low-income countries.


Assuntos
Doenças Cardiovasculares/economia , Países em Desenvolvimento , Diabetes Mellitus Tipo 2/economia , Custos de Cuidados de Saúde , Serviços de Saúde/economia , África , Ásia , Doenças Cardiovasculares/prevenção & controle , Doenças Cardiovasculares/terapia , Diabetes Mellitus Tipo 2/prevenção & controle , Diabetes Mellitus Tipo 2/terapia , Europa (Continente) , Humanos , Renda , Oriente Médio , América do Sul
13.
Soc Sci Med ; 139: 115-22, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26189009

RESUMO

Vaccination coverage rates often mask wide variation in access, uptake, and cost of providing vaccination. Financial incentives have been effective at creating demand for social services in a variety of settings. Using methods of extended cost-effectiveness analysis, we compare the health and economic implications of three different vaccine delivery strategies for measles vaccination in Ethiopia: i) routine immunization, ii) routine immunization with financial incentives, and iii) mass campaigns, known as supplemental immunization activities (SIAs). We examine annual birth cohorts of almost 3,000,000 births over a ten year period, exploring variation in these outcomes based on economic status to understand how various options may improve equity. SIAs naturally achieve higher levels of vaccine coverage, but at higher costs. Routine immunization combined with financial incentives bolsters demand among more economically vulnerable households. The relative appeal of routine immunization with financial incentives and SIAs will depend on the policy environment, including short-term financial limitations, time horizons, and the types of outcomes that are desired. While the impact of financial incentives has been more thoroughly studied in other policy arenas, such as education, consideration of this approach alongside standard vaccination models such as SIAs is timely given the dialog around measles eradication.


Assuntos
Análise Custo-Benefício/estatística & dados numéricos , Vacinação em Massa/economia , Vacina contra Sarampo/uso terapêutico , Política Pública , Pré-Escolar , Etiópia/epidemiologia , Humanos , Lactente , Vacinação em Massa/legislação & jurisprudência , Sarampo/epidemiologia , Vacina contra Sarampo/economia
14.
J Emerg Med ; 49(2): e45-8, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-26004855

RESUMO

BACKGROUND: Immersion foot (commonly called "trench foot") was originally described in the military literature during World War I. Since that time, the emergency department (ED) has become a common setting where this injury presents. However, this topic is neglected in the emergency medicine literature. The purpose of this case report is to present trench foot in a way that is relevant to emergency physicians and to provide an up-to-date summary of the history, case reports, physiology, clinical presentation, and treatment of this injury. CASE REPORT: Here we present the case of a homeless, schizophrenic patient who presented to one Midwestern ED in January for immersion foot. Photos of the actual patient are shown to illustrate the case. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Due to unfamiliarity, immersion foot can go undiagnosed during assessment of patients exposed to moist environments. In addition, patients at increased risk for developing immersion foot are frequently encountered in EDs. Most importantly, the appropriate treatment for immersion foot is different than the treatment for other freezing cold injuries.


Assuntos
Pessoas Mal Alojadas , Pé de Imersão/complicações , Pé de Imersão/patologia , Adulto , Humanos , Masculino , Dor/etiologia , Prurido/etiologia
15.
Lancet Glob Health ; 3(5): e288-96, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25889470

RESUMO

BACKGROUND: The way in which a government chooses to finance a health intervention can affect the uptake of health interventions and consequently the extent of health gains. In addition to health gains, some policies such as public finance can insure against catastrophic health expenditures. We aimed to evaluate the health and financial risk protection benefits of selected interventions that could be publicly financed by the government of Ethiopia. METHODS: We used extended cost-effectiveness analysis to assess the health gains (deaths averted) and financial risk protection afforded (cases of poverty averted) by a bundle of nine (among many other) interventions that the Government of Ethiopia aims to make universally available. These nine interventions were measles vaccination, rotavirus vaccination, pneumococcal conjugate vaccination, diarrhoea treatment, malaria treatment, pneumonia treatment, caesarean section surgery, hypertension treatment, and tuberculosis treatment. FINDINGS: Our analysis shows that, per dollar spent by the Ethiopian Government, the interventions that avert the most deaths are measles vaccination (367 deaths averted per $100,000 spent), pneumococcal conjugate vaccination (170 deaths averted per $100,000 spent), and caesarean section surgery (141 deaths averted per $100,000 spent). The interventions that avert the most cases of poverty are caesarean section surgery (98 cases averted per $100,000 spent), tuberculosis treatment (96 cases averted per $100,000 spent), and hypertension treatment (84 cases averted per $100,000 spent). INTERPRETATION: Our approach incorporates financial risk protection into the economic evaluation of health interventions and therefore provides information about the efficiency of attainment of both major objectives of a health system: improved health and financial risk protection. One intervention might rank higher on one or both metrics than another, which shows how intervention choice-the selection of a pathway to universal health coverage-might involve weighing up of sometimes competing objectives. This understanding can help policy makers to select interventions to target specific policy goals (ie, improved health or financial risk protection). It is especially relevant for the design and sequencing of universal health coverage to meet the needs of poor populations.


Assuntos
Análise Custo-Benefício , Financiamento Governamental , Custos de Cuidados de Saúde , Gastos em Saúde/estatística & dados numéricos , Cesárea/economia , Cesárea/estatística & dados numéricos , Controle de Doenças Transmissíveis/economia , Efeitos Psicossociais da Doença , Diarreia/economia , Diarreia/prevenção & controle , Etiópia , Humanos , Hipertensão/economia , Hipertensão/prevenção & controle , Pobreza/prevenção & controle , Pobreza/estatística & dados numéricos , Anos de Vida Ajustados por Qualidade de Vida , Vacinação/economia , Vacinação/estatística & dados numéricos
16.
Vaccine ; 33(24): 2830-41, 2015 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-25770785

RESUMO

INTRODUCTION: Cervical cancer screening and existing health insurance schemes in China fall short of reaching women with prevention and treatment services, especially in rural areas where the disease burden is greatest. We conducted an extended cost-effectiveness analysis (ECEA) to evaluate public financing of HPV vaccination to prevent cervical cancer, adding new dimensions to conventional cost-effectiveness analysis through an explicit inclusion of equity and impact on financial risk protection. METHODS: We synthesized available epidemiological, clinical, and economic data from China using an individual-based Monte Carlo simulation model of cervical cancer to estimate the distribution of deaths averted by income quintile, comparing vaccination plus screening against current practice. We also estimated reductions in cervical cancer incidence, net costs to the government (HPV vaccination costs minus cervical cancer treatment costs averted), and patient cost savings, as well as the incremental government health care costs per death averted. RESULTS: HPV vaccination is cost-effective across all income groups when the cost is less than US $50 per vaccinated girl. Compared to screening alone, adding preadolescent HPV vaccination followed by cervical cancer screening in adulthood could reduce cancer by 44 percent across all income groups, while providing relatively higher financial protection to the poorest women. The absolute numbers of cervical cancer deaths averted and the financial risk protection from HPV vaccination are highest among women in the lowest quintile; women in the bottom income quintiles received higher benefits than those in the upper wealth quintiles. Patient cost savings represent a large proportion of poor women's average per capita income, reaching 60 percent among women in the bottom income quintile and declining to 15 percent among women in the wealthiest quintile.


Assuntos
Custos de Cuidados de Saúde , Programas de Imunização/economia , Infecções por Papillomavirus/prevenção & controle , Vacinas contra Papillomavirus/economia , Neoplasias do Colo do Útero/prevenção & controle , Criança , China/epidemiologia , Efeitos Psicossociais da Doença , Análise Custo-Benefício , Detecção Precoce de Câncer/economia , Feminino , Financiamento Governamental , Custos de Cuidados de Saúde/estatística & dados numéricos , Humanos , Infecções por Papillomavirus/epidemiologia , Vacinas contra Papillomavirus/administração & dosagem , Fatores Socioeconômicos , Neoplasias do Colo do Útero/epidemiologia , Vacinação/economia , Vacinação/estatística & dados numéricos
17.
Lancet Glob Health ; 2(12): e698-709, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25433625

RESUMO

BACKGROUND: Measuring a country's health performance has focused mostly on estimating levels of mortality. An alternative is to measure rates of decline in mortality, which are more sensitive to changes in health policy than are mortality levels. Historical rates of decline in mortality can also help test the feasibility of future health goals (eg, post-2015). We aimed to assess the annual rates of decline in under-5, maternal, tuberculosis, and HIV mortality over the past two decades for 109 low-income and middle-income countries. METHODS: For the period 1990-2013, we estimated annual rates of decline in under-5 mortality (deaths per 1000 livebirths), the maternal mortality ratio (deaths per 100 000 livebirths), and tuberculosis and HIV mortality (deaths per 100 000 population per year) using published data from UNICEF and WHO. For every 5-year interval (eg, 1990-95), we defined performance as the size of the annual rate of decline for every mortality indicator. Subsequently, we tested the feasibility of post-2015 goals by estimating the year by which countries would achieve 2030 targets proposed by The Lancet's Commission on Investing in Health (ie, 20 deaths per 1000 for under-5 mortality, 94 deaths per 100 000 for maternal mortality, four deaths per 100 000 for tuberculosis mortality, and eight deaths per 100 000 for HIV mortality) at observed country and aspirational best-performer (90th percentile) rates. FINDINGS: From 2005 to 2013, the mean annual rate of decline in under-5 mortality was 4·3% (95% uncertainty interval [UI] 3·9-4·6), for maternal mortality it was 3·3% (2·5-4·1), for tuberculosis mortality 4·1% (2·8-5·4), and for HIV mortality 2·2% (0·1-4·3); aspirational best-performer rates per year were 7·1% (6·8-7·5), 6·3% (5·5-7·1), 12·8% (11·5-14·1), and 15·3% (13·2-17·4), respectively. The top two country performers were Macedonia and South Africa for under-5 mortality, Belarus and Bulgaria for maternal mortality, Uzbekistan and Macedonia for tuberculosis mortality, and Namibia and Rwanda for HIV mortality. At aspirational rates of decline, The Lancet's Commission on Investing in Health target for under-5 mortality would be achieved by 50-64% of countries, 35-41% of countries would achieve the 2030 target for maternal mortality, 74-90% of countries would meet the goal for tuberculosis mortality, and 66-82% of countries would achieve the target for HIV mortality.


Assuntos
Mortalidade da Criança/tendências , Países em Desenvolvimento/estatística & dados numéricos , Infecções por HIV/mortalidade , Mortalidade Materna/tendências , Tuberculose/mortalidade , Criança , Pré-Escolar , Objetivos , Infecções por HIV/epidemiologia , Humanos , Lactente , Pobreza , Tuberculose/epidemiologia
18.
PLoS One ; 8(3): e58982, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23527065

RESUMO

Anthropogenic changes in land use and the extirpation of apex predators have facilitated explosive growth of mesopredator populations. Consequently, many species have been subjected to extensive control throughout portions of their range due to their integral role as generalist predators and reservoirs of zoonotic disease. Yet, few studies have monitored the effects of landscape composition or configuration on the demographic or behavioral response of mesopredators to population manipulation. During 2007 we removed 382 raccoons (Procyon lotor) from 30 forest patches throughout a fragmented agricultural ecosystem to test hypotheses regarding the effects of habitat isolation on population recovery and role of range expansion and dispersal in patch colonization of mesopredators in heterogeneous landscapes. Patches were allowed to recolonize naturally and demographic restructuring of patches was monitored from 2008-2010 using mark-recapture. An additional 25 control patches were monitored as a baseline measure of demography. After 3 years only 40% of experimental patches had returned to pre-removal densities. This stagnant recovery was driven by low colonization rates of females, resulting in little to no within-patch recruitment. Colonizing raccoons were predominantly young males, suggesting that dispersal, rather than range expansion, was the primary mechanism driving population recovery. Contrary to our prediction, neither landscape connectivity nor measured local habitat attributes influenced colonization rates, likely due to the high dispersal capability of raccoons and limited role of range expansion in patch colonization. Although culling is commonly used to control local populations of many mesopredators, we demonstrate that such practices create severe disruptions in population demography that may be counterproductive to disease management in fragmented landscapes due to an influx of dispersing males into depopulated areas. However, given the slow repopulation rates observed in our study, localized depopulation may be effective at reducing negative ecological impacts of mesopredators in fragmented landscapes at limited spatial and temporal scales.


Assuntos
Vetores de Doenças , Guaxinins , Agricultura , Animais , Ecossistema , Meio Ambiente , Feminino , Indiana , Masculino , Densidade Demográfica , Dinâmica Populacional , Árvores
19.
Chem Commun (Camb) ; 49(27): 2828-30, 2013 Apr 07.
Artigo em Inglês | MEDLINE | ID: mdl-23443640

RESUMO

A "pillar-free", highly porous metalloporphyrinic framework (UNLPF-1) exhibiting eclipsed porphyrin arrays has been constructed from an octacarboxylate ligand connected with paddlewheel secondary building units. UNLPF-1 possesses two types of open metal sites and exhibits an efficient selectivity toward capture of CO2 over N2.

20.
Ecol Evol ; 2(2): 429-43, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22423334

RESUMO

Positive demographic responses have been reported in several species where the immigration or supplementation of genetically distinct individuals into wild populations has resulted in a genetic rescue effect. However, rarely have researchers incorporated what could be considerable risk of outbreeding depression into planning for genetic management programs. We assess the genetic effects of an experiment in genetic management involving replicate populations of California bighorn sheep (Ovis canadensis californiana) in Oregon, USA, which previously experienced poor productivity and numerical declines. In the experiment, two declining populations were supplemented with ewes from a more genetically diverse population of California bighorn sheep in Nevada. We incorporated analysis of genetic samples representing both experimental populations prior to supplementation, samples from the supplemented individuals, and samples collected from both experimental populations approximately one generation after supplementation. We used genetic analyses to assess the integration of supplemented and resident populations by identifying interpopulation hybrids. Further, we incorporated demographic simulations to assess the risk of outbreeding depression as a result of the experimental augmentation. Finally, we used data from microsatellites and mitochondrial sequences to determine if genetic management increased genetic diversity in the experimental populations. Our analyses demonstrated the success of genetic management by documenting interpopulation hybrids, identifying no evidence for outbreeding depression as a result of contact between the genetically distinct supplemented and resident populations, and by identifying increased population-level metrics of genetic diversity in postsupplementation populations compared with presupplementation levels.

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