Doctors, lawyers and pharmaceutical industry on health lawsuits in Minas Gerais, Southeastern Brazil

OBJECTIVE: To describe the relationship between the prescribing doctor, lawyer and pharmaceutical industry in lawsuits against the state. METHODS: Retrospective descriptive study based on data from administrative files, relating to lawsuits involving medicine demands, in the state of Minas Gerais, Southeastern Brazil, from October 1999 to October 2009. RESULTS: A total of 2,412 lawsuits were analyzed with 2,880 medicine requests, including 18 different drugs, 12 of them provided through Pharmaceutical Policies of the Brazilian National Health System (SUS). The most frequent medicines requested included were adalimumab, etanercept, infliximab, insulin glargine and tiotropium bromide. The main diseases were rheumatoid arthritis, ankylosing spondylitis, diabetes mellitus, and chronic obstructive pulmonary disease. Private lawyers and doctors were predominant. The results revealed the association between doctors and law offices on drug requests. Among the lawsuits filed by the office A, 43.6% had a single prescriber to adalimumab, while 29 doctors were responsible for 40.2% of the same drug prescriptions. A single doctor was responsible for 16.5% of the adalimumab prescriptions, being requested through lawsuits filed by a single private law office in 44.8% of legal proceedings. CONCLUSIONS: A greater representation of doctors and lawyers from the private sector can hinder equity in health. The results revealed the association between doctors and law offices on drug requests. This is an indication that justice and medical practice have been used, at certain times, to serve the interests of the pharmaceutical industry.OBJETIVO: Describir las relaciones entre médico prescriptor, abogado e industria farmacéutica en acciones judiciales contra el Estado. MÉTODOS: Estudio descriptivo retrospectivo con base en las informaciones de los expedientes administrativos de los procesos judiciales con demandas por medicamentos contra el Estado de Minas Gerais, Sudeste de Brasil, movidos entre octubre de 1999 y octubre de 2009. Las variables estudiadas fueron: sexo, edad y enfermedad de los beneficiarios de las acciones, origen de la atención médica (público o privado), médico prescriptor, tipo de representación jurídica y medicamento solicitado. Se realizó análisis descriptivo de las variables con la distribución de frecuencias. RESULTADOS: Los medicamentos más solicitados fueron adalimumabe, etanercepte, infliximabe e insulina glargina. Las principales enfermedades de los beneficiarios fueron artritis reumatoide, espondilitis anquilosante, diabetes mellitus y enfermedades pulmonares obstructivas crónicas. Hubo predominio de representación por abogados particulares y atención por médicos del sector privado. Entre las acciones representadas por la oficina A, 43,6% tuvieron un único médico prescriptor para el adalimumabe, y 29 médicos fueron responsables por 40,2% de los pedidos del mismo fármaco. Sólo un médico fue responsable por 16,5% de las prescripciones de adalimumabe, solicitado por sólo una oficina particular de abogacía, en 44,8% de los pedidos. CONCLUSIONES: La mayor representatividad de médicos del sector privado y abogados particulares pudo traer perjuicio a la equidad. Los datos sugieren asociación entre médicos y oficinas de abogacía en las solicitudes de medicamentos. Este escenario es un indicio de que la justicia y la medicina han sido utilizadas para atender a los intereses de la industria farmacéutica.OBJETIVO: Descrever as relações entre médico prescritor, advogado e indústria farmacêutica em ações judiciais contra o Estado. MÉTODOS: Estudo descritivo retrospectivo com base nas informações dos expedientes administrativos dos processos judiciais com demandas por medicamentos contra o Estado de Minas Gerais movidos entre outubro de 1999 e outubro de 2009. As variáveis estudadas foram: sexo, idade e doença dos beneficiários das ações, origem do atendimento médico (público ou privado), médico prescritor, tipo de representação jurídica e medicamento solicitado. Foi realizada análise descritiva das variáveis com a distribuição de frequências. RESULTADOS: Foram analisadas 2.412 ações judiciais referentes a 2.880 medicamentos solicitados, com 18 fármacos diferentes. Entre esses, 12 são fornecidos pelas políticas de assistência farmacêutica do Sistema Único de Saúde (SUS). Os medicamentos mais solicitados foram adalimumabe, etanercepte, infliximabe e insulina glargina. As principais doenças dos beneficiários foram artrite reumatóide, espondilite anquilosante, diabetes mellitus e doenças pulmonares obstrutivas crônicas. Houve predomínio de representação por advogados particulares e atendimento por médicos do setor privado. Entre as ações representadas pelo escritório A, 43,6% tiveram um único médico prescritor para o adalimumabe e 29 médicos foram responsáveis por 40,2% dos pedidos do mesmo fármaco. Apenas um médico foi responsável por 16,5% das prescrições de adalimumabe, solicitado por apenas um escritório particular de advocacia, em 44,8% dos pedidos. CONCLUSÕES: A maior representatividade de médicos do setor privado e advogados particulares pode trazer prejuízo à equidade. Os dados sugerem associação entre médicos e escritórios de advocacia nas solicitações dos medicamentos. Esse quadro é um indício de que a Justiça e a medicina têm sido utilizadas para atender aos interesses da indústria farmacêutica

ANÁLISE COMPARATIVA DO USO DE LISDEXANFETAMINA E DE METILFENIDATO NO TRATAMENTO DO TDAH

  Considering the increasing prevalence of Attention Deficit Hyperactivity Disorder (ADHD) and the need for effective and safe therapeutic interventions, this research aimed to conduct a comparative analysis between lisdexamfetamine and methylphenidate in the treatment of ADHD. To this end, a comprehensive qualitative literature review was conducted, using sources such as Scielo, Google Scholar, scientific journals, institutional repositories, and virtual libraries, without specific time period limitations. Thus, it was observed that both medications demonstrated efficacy in reducing ADHD symptoms. Lisdexamfetamine showed a more prolonged and consistent effect on dopaminergic neurotransmission and a potentially more favorable side effect profile, with fewer reports of severe adverse effects compared to methylphenidate. Methylphenidate, in turn, showed significant efficacy, especially in the short term. It is concluded that both lisdexamfetamine and methylphenidate are valid therapeutic options for the treatment of ADHD, with specific advantages in different clinical contexts. The choice between these medications should consider the individual characteristics of patients and the available evidence of efficacy and safety, contributing to the optimization of treatment and the improvement of the quality of life of patients with ADHD.Considerando a crescente prevalência do Transtorno de Déficit de Atenção e Hiperatividade (TDAH) e a necessidade de intervenções terapêuticas eficazes e seguras, esta pesquisa objetivou realizar uma análise comparativa entre lisdexanfetamina e metilfenidato no tratamento do TDAH. Para tanto, procedeu-se a uma revisão bibliográfica qualitativa abrangente, utilizando fontes como Scielo, Google Acadêmico, revistas científicas, repositórios institucionais e bibliotecas virtuais, sem limitação de período específico. Desse modo, observou-se que ambos os medicamentos demonstraram eficácia na redução dos sintomas do TDAH. A lisdexanfetamina apresentou um efeito mais prolongado e consistente na neurotransmissão dopaminérgica e um perfil de efeitos colaterais potencialmente mais favorável, com menos relatos de efeitos adversos graves em comparação ao metilfenidato. O metilfenidato, por sua vez, mostrou eficácia significativa, especialmente em curto prazo. Conclui-se que tanto a lisdexanfetamina quanto o metilfenidato são opções terapêuticas válidas para o tratamento do TDAH, com vantagens específicas em diferentes contextos clínicos. A escolha entre esses medicamentos deve considerar as características individuais dos pacientes e as evidências de eficácia e segurança disponíveis, contribuindo para a otimização do tratamento e a melhoria da qualidade de vida dos pacientes com TDAH

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran\u27s eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R$^{2}$ = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R$^{2}$ = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

Geography and ecology shape the phylogenetic composition of Amazonian tree communities

AimAmazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types.LocationAmazonia.TaxonAngiosperms (Magnoliids; Monocots; Eudicots).MethodsData for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny.ResultsIn the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types.Main ConclusionNumerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

Mapping density, diversity and species-richness of the Amazon tree flora

Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution