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CONTEXT: Diseases related to excessive sugar consumption have become a public health concern. However, there may be a direct association between the consumption of artificial sweeteners and changes in body weight. OBJECTIVE: The aim was to evaluate potential industry financial conflicts of interest in publications on the relationship between high-intensity sweetener consumption and changes in body weight in observational and intervention studies. DATA SOURCES: The systematic review used the Medline, Embase, Cochrane, Scopus, and the VHL (Virtual Health Library) Regional Portal, including the LILACS databases. The PICOS strategy were used in the search strategy for intervention studies and for observational studies used the exposure factor as the criterion. DATA EXTRACTION: Inclusion criteria were observational and intervention studies in adults, without population or health status restrictions, without restriction on the year of publication, but restricted to full articles in Portuguese, English, and Spanish. Exclusion criteria were humans younger than 18 years, cross-sectional studies, and animal and in vitro studies. DATA ANALYSIS: There were extracted effect estimates, odds ratios, and linear associations, quantifying the effects per unit of intake of high-intensity sweeteners. The risk of bias in the intervention studies was assessed using the Cochrane Collaboration Risk of Bias tool (RoB). The Newcastle Ottawa Scale was used for observational studies (case-control and cohort). CONCLUSION: Most clinical trials favor using artificial sweeteners and receive contributions from the food industry. Observational studies, for the most part, show that the use of artificial sweeteners is unfavorable. In these studies, there was no sponsorship from the food industry, only from regulatory bodies. This result suggests that studies that had the support of the food industry had their influence on their outcomes. SYSTEMATIC REVIEW REGISTRATION: PROSPERO registration no: CRD42016036204.
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Psychedelics are a group of psychoactive substances which produce complex and subjective changes to consciousness and carry unique safety considerations. There is a growing body of work investigating the use of psychedelics for mental health treatment alongside increasing socio-cultural and political acceptance. This rapid evolution has prompted corporations to fund psychedelic clinical trials, leading to a potential rise in conflicts of interest in relevant studies and publications. However, the body of evidence for the safety and efficacy of psychedelic-assisted psychotherapy for psychiatric illnesses is early. There is concern regarding the introduction of bias in psychedelic clinical trials and the selective reporting of results amidst and beyond corporate involvement. At a crucial time in psychedelic drug reform, this paper explores the safety concerns associated with psychedelics, the potential influences of financial stakeholders on safety outcome reporting and the importance of balanced science communication in maintaining public health and safety.
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OBJECTIVE: To evaluate the extent of payments from medical device and pharmaceutical companies to editorial board members of leading otolaryngology journals. METHODS: Editorial board members of the top 10 otolaryngology journals from Google Scholar rankings were identified in this cross-sectional study. Payments between 2017 and 2022 were identified via the Open Payments Database from the Centers for Medicare and Medicaid Services. All payment data was adjusted for inflation in 2022 US dollars. Descriptive analyses were performed and journal websites were evaluated for individual editor disclosures. RESULTS: Out of 581 board members, 306 (53 %) received industry payments between 2017 and 2022, median journal percentage 55 % (interquartile range: 26.5 %-73.5 %). A sum of $45.8 million was paid out between 2017 and 2022, comprising $32.0 million in associated research funding, $1.2 million in research payments, $1.4 million in ownership and investment interests, and $11.2 million in general payments. The largest general payments were made out for "services other than consulting and speaking" ($3.9 million), "consulting" ($3.8 million), "travel and lodging" ($0.99 million), "education" ($0.87 million), "royalty or license" ($0.56 million), and "food and beverage" ($0.55 million). Individual editor disclosures were only available for International Forum of Allergy and Rhinology (9 % of all included editors). CONCLUSIONS: Industry payments to editors of otolaryngology journals are not uncommon. We highlight the need for improved reporting of individual editor disclosures for transparency to journal readers and for minimizing biased editorial decisions.
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A scoping review of publications about commercial milk formulas intended for or consumed by children 12-36 months (CMF 12-36) was conducted. This review aimed to comprehensively map the existing literature, identify key concepts in the field and understand its evolution through time. A total of 3329 articles were screened and 220 were included, published between 1986 and 2024. Most works were published after 2016 (70.0%) and in high-income countries (71.8%). Original studies were the vast majority (81.8%) of publications. Most publications dealt with feeding practices or analysed the composition and/or contamination of specific products (44.1% and 35.9%), but since the late 2000s, publications about marketing, policy, legislation, and consumer perception started to appear. Most published works (65.5%) did not focus exclusively on CMF 12-36 and included formulas for other demographics or other foods. About half of the works (55.5%) did not consider CMF 12-36 to be a breast milk substitute. We found 81 distinct product denominations used to refer to CMF 12-36, Growing Up Milk was the most common (25.9%). CMF industry was involved in 41.8% of all analysed works, and industry participation and funding were not always clearly informed (22.5% lacked a conflict of interest statement, and 25.5% did not present any information about funding). In the last decade, publications about CMF 12-36 have increased in volume and diversified in scope and subject matter. CMF-industry participation has always been and still is present in the field, so possible vested interests should be taken into account when appreciating the literature.
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In Diptera, reproductive strategies vary according to the stage of development of the newly deposited offspring and their abundance. The aim of our study is to establish connections between the reproductive strategies of flies (larviparous or oviparous) and the prevailing local conditions (sun or shade) as well as landscape attributes (low or high urbanization) in an urban setting. We collected flies using 2 baited traps (in the sun or shade) at each of the 13 study sites with varying levels of urbanization. We used generalized linear mixed models to examine the impact of landscape and local characteristics on the diversity (abundance and richness of larviparous and oviparous Diptera) of sarcosaprophagous flies. Our findings indicate that while the abundance and diversity of both larviparous and oviparous flies are affected by urbanization, larviparous flies would be less sensitive to more urbanized environments. Larviparous also exhibit a preference for resources under sun exposure, while the responses of oviparous seem more species-dependent. The observed patterns can be explained by the known biology of the studied groups.
Subject(s)
Diptera , Urbanization , Animals , Diptera/physiology , Oviparity , Larva/physiology , Larva/growth & development , Cities , Female , Viviparity, Nonmammalian , Reproduction , BiodiversityABSTRACT
Corporate influence in policy and decision-making is an important public health concern. This Health Policy paper reviews Ecuador's child malnutrition strategy instruments, approved between 2020 and 2023, to identify how private interests are becoming legally integrated into the public sector. Evidence indicates that recent changes are enabling corporations to promote their brands, gain tax deductions, oversee public policy and set priorities, allocate resources, and decide on implementation of the country's child malnutrition strategy. Further, corporate representatives are active members of an advisory council, free from scrutiny or accountability, while being privy to undisclosed government information. Moreover, a UN agency (the World Food Program) engaged in corporate promotion of highly processed foods, illustrating the breadth of Ecuador's corporate influence scheme. Improved regulations should set clear limits to the influence of food and beverage industries in national nutrition policy, while following transparency laws in the composition and operation of Ecuador's child malnutrition strategy and related efforts.
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Monitoring and assessment of marine litter requires multi-stakeholder involvement at national and subnational levels. Collaborative governance approaches are important, but often fail without adequate effort towards identifying and engaging stakeholders with appropriate profiles for the issue at stake. Stakeholder Analysis (SA) is increasingly used to ensure efficient governance arrangements. Our hypothesis is that SA contributes to collaborative governance processes for marine litter policies. We explored a pioneer participatory process in Brazil, where SA was applied to identify, categorize, and prioritize stakeholders, and analyze their power and interest, for the Strategic Plan for Monitoring and Assessing Marine Litter in the state of São Paulo. A top-down/bottom-up approach revealed that snowball sampling complemented the stakeholder assemblage identified by the consultation of experts. Prioritization of data-related stakeholders streamlined the participatory process. The interest-power matrix evaluated stakeholders' influences, guiding specific engagement strategies. We highlight the significance of SA in collaborative governance and mobilizing key stakeholders for effective marine litter monitoring initiatives, contributing to the global agenda to combat marine pollution.
Subject(s)
Environmental Pollution , BrazilABSTRACT
OBJECTIVE: The objective of this study was to investigate the newly graduated physicians' attitudes and perceptions regarding the medical relationship with the pharmaceutical industry and identify the sociodemographic patterns related to such thinking. METHODS: A structured questionnaire was administered to 4,601 participants selected from a pool of 16,323 physicians who were registered with one of the 27 Regional Medical Councils of Brazil in 2015. Answers were analyzed using two stratification variables: type of medical school (public vs. private) and the sex of the respondents. RESULTS: Out of the participants, 61.8% believed that industry funding could support medical conferences and education, and 48.4% felt that small gifts and conference travel funding were acceptable. Conversely, 64.7% disagreed with industry-sponsored social events. Views on whether pharmaceutical representatives' visits influenced prescriptions were divided. Statistically significant differences were observed between genders and medical school types, with men and private school graduates being more accepting of certain industry interactions. CONCLUSION: The study highlights the nuanced attitudes of new doctors toward industry relationships, indicating the need for clearer ethical guidelines and education in medical schools to align practice with evolving societal values.
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Background: This study assessed the role of culture in the measurement of the Self-Curiosity Attitude-Interest scale (SCAI-M), a measure of attitude and interest in increasing one's knowledge of self, adopting both a person-centered and variable-centered approach. Methods: The study was conducted on a Mexican sample composed of 484 adult participants who completed both the SCAI-M and a series of instruments that measure cultural dimensions through Qualtrix. Data were collected between November 9, to December 18, 2020, and respondents were contacted using advertisements on social media platforms (Facebook and WhatsApp). Analyses included multigroup confirmatory factor analysis and latent profile analysis. Results: A latent profile analysis allowed for the generation of three groups featuring distinct cultural orientations that were similar to previously found cultural profiles (Consensus-oriented Egalitarians, Flexible Individualists, and Rules-based Competitors). Multigroup Confirmative Factor Analysis showed partial metric and scalar invariance for the SCAI-M between groups; moreover, we found proofs of convergent validity with other cultural dimensions besides the ones linked with the Hofstede model. Our results indicate that cultural profiles and cultural variables are associated with both the level and meaning of self-curiosity among Mexican citizens. Conclusions: Finally, the discussion includes considerations on self-curiosity divergence among minority cultures and relevant clinical applications; a field for which we propose future research.
Subject(s)
Attitude , Exploratory Behavior , Adult , Humans , Mexico , Factor Analysis, StatisticalABSTRACT
Resumen Objetivo: Describir los conflictos de intereses en la profesión médica, su naturaleza omnipresente y la importancia de la transparencia para la preservación de la integridad y la objetividad en la práctica médica y la investigación. Métodos: Para la fundamentación de este artículo, se revisaron diferentes publicaciones sobre el conflicto de intereses, incluidos editoriales, ensayos éticos, tratados filosóficos y textos legales tanto nacionales como internacionales. Resultados: De acuerdo con la literatura consultada, en el ejercicio profesional de la medicina, los conflictos de intereses son omnipresentes, derivan de diversas fuentes y pueden alterar de manera consciente o inconsciente la práctica médica. Conclusión: Tener apertura sobre los propios conflictos de intereses y declararlos debidamente permite a todos, incluidos pacientes, colegas, empleadores y público general, juzgar por sí mismos si una relación en particular puede estar influyendo en las acciones de un médico.
Abstract Objectives: To describe conflicts of interest in the medical profession, their pervasive nature, and the importance of transparency for the preservation of integrity and objectivity in medical practice and research. Methods: For the substantiation of this article, different publications on the subject were reviewed, including editorials, ethical essays, philosophical treatises, and legal texts both national and international. Results: According to the literature consulted, in the professional practice of medicine conflicts of interest are omnipresent, derive from various sources and can consciously or unconsciously alter medical practice. Conclusion: Being open about one's own conflicts of interest and properly declaring them allows everyone, including patients, colleagues, employers, and the public, to judge for themselves whether a particular relationship may be influencing a doctor's actions.
Subject(s)
Physicians/ethics , Conflict of Interest , Remuneration , Research , Fellowships and ScholarshipsABSTRACT
A pandemia da covid-19 gerou aumento de repositórios de dados digitais que registram a memória das pessoas sobre a pandemia, originando diversas comunidades virtuais que promovem a produção de memórias por meio do envio de relatos de histórias de vida em diversas mídias. Com base num estudo exploratório de natureza documental, este trabalho apresenta um levantamento amplo e significativo de plataformas digitais provenientes de diversas ações e instituições universitárias, culturais e de meios de comunicação e associações da sociedade civil que lançaram repositórios digitais para coletar e compartilhar relatos sobre as experiências das pessoas durante a pandemia de covid-19. A análise e a comparação dos registros memoriais existentes em tais repositórios indicam a importância de relatos de histórias de vida integrados às narrativas visuais compostas por fotografias e vídeos para a construção de uma rede de memórias mais inclusiva da pandemia de covid-19, ou seja, uma rede pautada nas vivências de diversos públicos e/ou comunidades, constituindo-se como memória de interesse público e contribuindo para a construção de um patrimônio cultural desse contexto. Os resultados também indicam a importância das novas tecnologias como meios de comunicação e informação desses dados de interesse público, com destaque para as narrativas transmídia, presentes em algumas das plataformas analisadas, como formas narrativas contemporâneas que possibilitam a participação ativa e o engajamento de públicos diversos
The covid-19 pandemic has generated an increase in digital data repositories that record people's memories of the pandemic, giving rise to several virtual communities that promote the production of memories by sending life stories in different media. Based on an exploratory and documental study, this work presents a survey of digital platforms from different actions and university, cultural and media institutions, and civil society associations that have launched digital repositories to collect and share reports about people's experiences about the covid-19 pandemic. The analysis and the comparison of the memorial records of the repositories indicate the importance of life stories integrated with visual narratives composed of photographs and videos to build a more inclusive network of memories of the covid-19 pandemic, that is, a network based on the experiences of different publics and/or communities, constituting itself as a memory of public interest for the construction of a cultural heritage of this context. The results indicate the importance of new technologies as means of communication and information on this data of public interest, with emphasis on transmedia narratives that are present in some of the platforms analyzed as contemporary narrative forms that enable the active participation and engagement of different audiences
La pandemia de covid-19 generó un aumento de los repositorios de datos digitales que registran los recuerdos de las personas sobre la pandemia, dando lugar a varias comunidades virtuales que promueven la producción de memorias a través del envío de historias de vida en diferentes medios. A partir de un estudio exploratorio de carácter documental, este trabajo presenta una amplia y significativa relación de plataformas digitales de diferentes acciones y asociaciones universitarias, culturales, de medios de comunicación y de la sociedad civil que han puesto en marcha repositorios digitales para recopilar y compartir relatos sobre las experiencias de las personas sobre la pandemia de covid-19. El análisis y la comparación de los registros memoriales existentes en dichos repositorios indican la importancia de las historias de vida integradas con narrativas visuales compuestas de fotografías y videos para la construcción de una red de memorias más inclusiva de la pandemia del covid-19, es decir, un red a partir de las experiencias de diferentes públicos y/o comunidades, constituyéndose como una memoria de interés público para la construcción de un patrimonio cultural. Los resultados también indican la importancia de las nuevas tecnologías como medios de comunicación e información sobre estos datos de interés público, con énfasis en las narrativas transmedia, presentes en algunos de los analizados, como formas narrativas contemporáneas, que posibilitan la participación activa y el compromiso de diferentes audiencias
Subject(s)
Humans , Personal Narrative , Online Social Networking , COVID-19 , Memory , Archives , Communications Media , HistoryABSTRACT
En materia de Derecho de familia, la legislación peruana contempla la posibilidad de una tenencia compartida, regulada expresamente en el Código de los Niños y Adolescentes, sin establecer precisiones sobre las condiciones y formas de aplicación, lo que es similar en el Derecho comparado. Sustentado en principios bioéticos y jurídicos, en el presente artículo se analiza la posibilidad de generar una regulación especial para la tenencia compartida, enfocada en la necesidad de establecer criterios especiales que puedan tener en cuenta los jueces en los casos concretos que involucren a niños y niñas. Estos criterios deben partir de un modelo social dirigido a quebrar las barreras impuestas, dotando de las condiciones más adecuadas para un desarrollo integral y pleno. En esa línea de pensamiento, es fundamental el interés superior del niño, el compromiso de los progenitores y la implementación de ajustes razonables.
In terms of family law, Peruvian legislation contemplates the possibility of shared custody, expressly regulated in the Code of Children and Adolescents, without establishing details on the conditions and forms of application, which is similar in comparative law. Based on bioethical and legal principles, this article analyses the possibility of generating a special regulation for shared custody, focusing on the need to establish special criteria that judges can take into account in specific cases involving children. These criteria should be based on a social model aimed at breaking down the barriers imposed, providing the most appropriate conditions for an integral and full development. In this line of thought, the best interests of the child, the commitment of the parents and the implementation of reasonable accommodations are fundamental.
Em matéria de Direito de família, a legislação peruana contempla a possibilidade de uma guarda compartilhada, regulada expressamente no Código das Crianças e Adolescentes, sem estabelecer especificações sobre as condições e formas de aplicação, o que é similar no Direito comparado. Apoiado em princípios bioéticos e jurídicos, no presente artigo se analisa a possibilidade de gerar uma regulação especial para a guarda compartilhada, focada na necessidade de estabelecer critérios especiais que juízes possam ter em conta nos casos concretos que envolvem meninos e meninas. Esses critérios devem partir de um modelo social dirigido a quebrar as barreiras impostas, dotando as condições mais adequadas para um desenvolvimento integral e pleno. Nessa linha de pensamento, é fundamental o interesse superior da criança, o compromisso dos pais e a implementação de ajustes razoáveis.
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Humans , Male , Female , Child Care , PeruABSTRACT
The first 18 months of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections in Colombia were characterized by three epidemic waves. During the third wave, from March through August 2021, intervariant competition resulted in Mu replacing Alpha and Gamma. We employed Bayesian phylodynamic inference and epidemiological modeling to characterize the variants in the country during this period of competition. Phylogeographic analysis indicated that Mu did not emerge in Colombia but acquired increased fitness there through local transmission and diversification, contributing to its export to North America and Europe. Despite not having the highest transmissibility, Mu's genetic composition and ability to evade preexisting immunity facilitated its domination of the Colombian epidemic landscape. Our results support previous modeling studies demonstrating that both intrinsic factors (transmissibility and genetic diversity) and extrinsic factors (time of introduction and acquired immunity) influence the outcome of intervariant competition. This analysis will help set practical expectations about the inevitable emergences of new variants and their trajectories. IMPORTANCE Before the appearance of the Omicron variant in late 2021, numerous SARS-CoV-2 variants emerged, were established, and declined, often with different outcomes in different geographic areas. In this study, we considered the trajectory of the Mu variant, which only successfully dominated the epidemic landscape of a single country: Colombia. We demonstrate that Mu competed successfully there due to its early and opportune introduction time in late 2020, combined with its ability to evade immunity granted by prior infection or the first generation of vaccines. Mu likely did not effectively spread outside of Colombia because other immune-evading variants, such as Delta, had arrived in those locales and established themselves first. On the other hand, Mu's early spread within Colombia may have prevented the successful establishment of Delta there. Our analysis highlights the geographic heterogeneity of early SARS-CoV-2 variant spread and helps to reframe the expectations for the competition behaviors of future variants.
Subject(s)
COVID-19 , Humans , Bayes Theorem , COVID-19/epidemiology , Colombia/epidemiology , SARS-CoV-2/geneticsABSTRACT
INTRODUCTION: The emergence of multiple variants of SARS-CoV-2 during the COVID-19 pandemic is of great world concern. Until now, their analysis has mainly focused on next-generation sequencing. However, this technique is expensive and requires sophisticated equipment, long processing times, and highly qualified technical personnel with experience in bioinformatics. To contribute to the analysis of variants of interest and variants of concern, increase the diagnostic capacity, and process samples to carry out genomic surveillance, we propose a quick and easy methodology to apply, based on Sanger sequencing of 3 gene fragments that code for protein spike. METHODS: Fifteen positive samples for SARS-CoV-2 with a cycle threshold below 25 were sequenced by Sanger and next-generation sequencing methodologies. The data obtained were analyzed on the Nextstrain and PANGO Lineages platforms. RESULTS: Both methodologies allowed the identification of the variants of interest reported by the WHO. Two samples were identified as Alpha, 3 Gamma, one Delta, 3 Mu, one Omicron, and 5 strains were close to the initial Wuhan-Hu-1 virus isolate. According to in silico analysis, key mutations can also be detected to identify and classify other variants not evaluated in the study. CONCLUSION: The different SARS-CoV-2 lineages of interest and concern are classified quickly, agilely, and reliably with the Sanger sequencing methodology.
Subject(s)
COVID-19 , SARS-CoV-2 , Humans , SARS-CoV-2/genetics , COVID-19/diagnosis , Pandemics , High-Throughput Nucleotide SequencingABSTRACT
INTRODUCTION: Chronic myeloid leukemia (CML) is a clonal myeloproliferative disorder characterized by the Philadelphia (Ph) chromosome. After the introduction of imatinib mesylate (IM) in 2000, the natural history of the disease changed. Data on the treatment of CML with IM are from randomized clinical trials. Establishing whether these results can be reproduced or if caution is needed when extrapolating data to the general population with CML is essential. OBJECTIVES: To evaluate the molecular response (MR) in patients with chronic-phase CML (CML-CP) not included in clinical studies and correlate them with the responses obtained in clinical trials. METHODS: Between January 2007 and January 2017, 227 patients newly diagnosed with CML-CP treated with IM as first-line treatment were included. This study is an observational, retrospective, and single-center study. RESULTS: At a median follow-up time of 7.3 years, 60.3% of the 227 patients who started IM were still on IM. Early molecular response (EMR) at 3 and 6 months was achieved by 74.2% and 65%, respectively. The median time to a MMR was nine months. The MR4.0 and MR4.5 were 67.2% and 51.1%, respectively. The overall survival (OS), progression-free survival (PFS), and event-free survival (EFS) of the patients who exclusively used IM were 91%, 91%, and 85.1%, respectively. CONCLUSION: The results presented are similar to those described in prospective and randomized trials, demonstrating that the outcomes are reproducible in the real world. EMR at 3 and 6 months reflects better long-term responses, including higher rates of deeper molecular responses. Considering treatment costs, the absence of literature evidence of an impact on overall survival demonstrated by first-line second-generation tyrosine kinase inhibitors (TKIs), and the global OS of 85.8%, imatinib mesylate (IM) is still an excellent therapeutic option.
Subject(s)
Antineoplastic Agents , Leukemia, Myelogenous, Chronic, BCR-ABL Positive , Humans , Imatinib Mesylate/therapeutic use , Retrospective Studies , Prospective Studies , Treatment Outcome , Protein Kinase Inhibitors/therapeutic use , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy , Philadelphia Chromosome , Antineoplastic Agents/therapeutic use , Fusion Proteins, bcr-abl/geneticsABSTRACT
Background: Confidence in the results reported by randomized clinical trials (RCTs) depends mainly on the internal validity of the trial and its conduct, but also on other aspects related to health research such as the complete reporting of conflicts of interest (COI), funding sources and approval by ethics committees. Bias in the study results may arise from any one of these elements. Prior studies have explored the reporting of these items in the medical literature, but there are no reports on RCTs published in Spanish and Latin American journals. This study aimed to evaluate the reporting of COIs, funding sources, and approval by ethics committees of RCTs published in Spanish and Latin American journals in dentistry, geriatrics and neurology. Methods: We did a systematic retrospective survey of all RCTs published from 1990 to 2018 in dentistry, neurology, and geriatrics journals published in Spain and Latin America and included in the BADERI database (Iberoamerican journals and trials database by its initials in Spanish). We completed with hand searching. We included RCTs with a recoverable full text published between 1990 and 2018. We extracted data on sources of funding, COI statements, and ethics reviews. The extraction of these items in the RCTs included was done independently by two pairs of reviewers and in parallel for each article, with a third independent reviewer resolving discrepancies. We analysed compliance for each item. Results: We identified RCTs in 69 journals from Spain and Latin American countries. Dentistry accounted for 75% (n = 52) of the journals, neurology 20.6% (n = 14), and geriatrics 4.4% (n = 3). Of the total number of RCTs included in this study (n = 392), only 102 (26%) reported the presence or absence of a COI, 103 (26%) studies reported funding, and 43 (36%) included the ethics committee approval. Conclusions: RCTs published in the Spanish language in dentistry, neurology, and geriatrics had poor compliance with the reporting of a COI, source of funding, and ethics committee approval. Future research should evaluate the accuracy and completeness of COI statements and their relationship to the funding source and direction of the results.
Subject(s)
Humans , Serial Publications , Conflict of Interest , Ethics Committees , Support of Research , Spain , Dentistry , Geriatrics , Latin America , NeurologyABSTRACT
Soil nutrients influence all stages (reproduction, growth, and development) of a plant species' life, and it is known that the deficit and/or toxicity of one or more nutrients has negative effects on the production of crops of commercial interest. Ecuador represents one of the "mega-diverse" countries in the world, with an agricultural sector of great importance, due to its contribution to the country's economy. This review provides a panoramic view of soil nutrients from different climatic regions of Ecuador and revises the importance of knowledge about the possible influence of nutrients from the soil on the plant metabolism able to influence the crop resistance against pathogens or to enrich the biological characteristics of these crops.
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The objective of this study was to evaluate the influence of the extraction socket (distal or lingual root) and the type of region of interest (ROI) definition (manual or predefined) on the assessment of alveolar repair following tooth extraction using micro-computed tomography (micro-CT). The software package used for scanning, reconstruction, reorientation, and analysis of images (NRecon®, DataViewer®, CT-Analyzer®) was acquired through Bruker < https://www.bruker.com > . The sample comprised the micro-CT volumes of seven Wistar rat mandibles, in which the right first molar was extracted. The reconstructed images were analyzed using the extraction sockets, i.e., the distal and intermediate lingual root and the method of ROI definition: manual (MA), central round (CR), and peripheral round (PR). The bone volume fraction (BV/TV) values obtained were analyzed by two-way ANOVA with Tukey's post hoc test (α = 5%). The distal extraction socket resulted in significantly lower BV/TV values than the intermediate lingual socket for MA (P = 0.001), CR (P < 0.001), and PR (P < 0.001). Regarding the ROI, when evaluating the distal extraction socket, the BV/TV was significantly higher (P < 0.001) for MA than for CR and PR, with a lower BV/TV for CR. However, no significant difference was observed for MA (P = 0.855), CR (P = 0.769), or PR (P = 0.453) in the intermediate lingual extraction socket. The bone neoformation outcome (BV/TV) for alveolar bone repair after tooth extraction is significantly influenced by the ROI and the extraction socket. Using the predefined method with a standardized ROI in the central region of the distal extraction socket resulted in the assessment of bone volume, demonstrating the most critical region of the bone neoformation process.