Accuracy, adaptation and margin quality of monolithic zirconia crowns fabricated by 3D printing versus subtractive manufacturing technique: A systematic review and meta-analysis of in vitro studies.

OBJECTIVE: The purpose of this systematic review and meta-analysis was to evaluate the accuracy (trueness and precision), marginal and internal adaptation, and margin quality of zirconia crowns made by additive manufacturing compared to subtractive manufacturing technology. METHODS: The investigation adhered to the PRISMA-ScR guidelines for systematic reviews and was registered at the Prospero database (n°CRD42023452927). Four electronic databases, including PubMed, Scopus, Embase, and Web of Science and manual search was conducted to find relevant studies published until September 2023. In vitro studies that assessed the trueness and precision, marginal and internal adaptation, and margin quality of printed crowns compared to milled ones were included. Studies on crowns over implants, pontics, temporary restorations, laminates, or exclusively experimental materials were excluded. RESULTS: A total of 9 studies were included in the descriptive reporting and 7 for meta-analysis. The global meta-analysis of the trueness (P<0.74,I2=90 %) and the margin quality (P<0.61,I2=0 %) indicated no significant difference between the root mean square of printed and milled zirconia crowns. The subgroup analysis for the printing system showed a significant effect (P<0.01). The meta-analysis of the crown areas indicated no significant difference in most of the areas, except for the marginal (favoring milled crowns) and axial (favoring printed crowns) areas. For precision and adaptation, both methods showed a clinically acceptable level. CONCLUSIONS: Additive manufacturing technology produces crowns with trueness and margin quality comparable to subtractive manufacturing. Both techniques have demonstrated the ability to produce crowns with precision levels, internal discrepancy, and marginal fit within clinically acceptable limits. CLINICAL SIGNIFICANCE: 3D printing emerges as a promising and potentially applicable alternative method for manufacturing zirconia crowns, as it shows trueness and margin quality comparable to restorations produced by the subtractive method.

Treatment of Childhood Brucellosis: A Systematic Review.

BACKGROUND: Proper treatment for brucellosis is crucial to eradicate the infection and prevent complications, but there is a notable gap in evidence for pediatric treatment. This study aims to address this gap by reviewing current literature, analyzing the efficacy and safety of brucellosis treatment in children, and identifying areas that require further investigation. METHODS: A systematic review, following preferred reporting items for systematic reviews and meta-analyses and Cochrane Handbook guidelines, assessed antimicrobial regimens' efficacy and safety for treating human brucellosis in children. Original human studies with clinical outcomes after drug therapy intervention for children up to 10 years were included. Searches were conducted in Medline, Embase, Cochrane Library and LILACS databases for studies indexed until March 6, 2023. Study selection, data extraction, and bias risk assessment were performed by pairs of reviewers. The quality assessment used Joanna Briggs Institute tools and grading of recommendations assessment, development and evaluation system. Data were analyzed using R software. RESULTS: A total of 1773 records were reviewed, yielding 11 eligible studies encompassing 1156 children. All included studies presented an observational design. The most reported treatment approaches included sulfamethoxazole-trimethoprim with rifampicin or aminoglycosides, with summarized failure rates of 2% (95% confidence interval: 0.0-0.49) and 13% (95% confidence interval: 0.06-0.29), respectively (very low certainty of evidence). Adverse events and time to defervescence were not reported. CONCLUSIONS: Sulfamethoxazole-trimethoprim + rifampicin were the most prescribed antibiotics for brucellosis for pediatrics. The study highlights the need for more research with robust designs, and emphasizes uncertainty regarding the efficacy of antimicrobial regimens, emphasizing the importance of further investigations to guide specific treatment protocols for this population.

Efficacy of antibiotic prophylaxis to preventing brucellosis in accidental exposure: A systematic review.

BACKGROUND: Antibiotic prophylaxis to prevent brucellosis after accidental exposure to Brucella is an important topic in public health. This study aimed to systematically review the efficacy of antibiotic prophylaxis following accidental exposure to Brucella in preventing human brucellosis disease. METHODS: The study protocol was registered in PROSPERO (CRD42023456812). The outcomes included the incidence of brucellosis disease, adverse events rate, and antibiotic prophylaxis adherence. A comprehensive literature search, conducted until 20 November, 2023, involved Medline, Embase, Cochrane Library, and LILACS databases. Descriptive analysis and meta-analysis using R software were performed, risk of bias was assessed using JBI Critical appraisal tools, and certainty of evidence was assessed using the GRADE tool. RESULTS: Among 3102 initially identified records, eight studies involving 97 individuals accidentally exposed, all focused on high-risk accidental exposure to Brucella in laboratory settings, were included in the review. All studies reported the prophylactic treatment comprising doxycycline at a dosage of 100 mg twice daily, combined with rifampicin at 600 mg, both administered over 21 days. Prophylaxis adherence was reported in 86% of cases, and incidence of brucellosis post-treatment was 0.01. Adverse events, mainly gastrointestinal, occurred in 26% of cases. Critical appraisal revealed limitations in reporting demographics and clinical information. The certainty of evidence was rated as 'very low,' emphasising the need for caution in interpreting the observed outcomes due to study design constraints and the absence of comparative groups. CONCLUSIONS: PEP is an alternative practice reported in the literature, used in accidents with high-risk exposure to Brucella. The currently available evidence of the efficacy of antibiotic prophylaxis is insufficient to support a recommendation for or against the widespread use of antibiotic prophylaxis, so caution is needed in interpreting results due to the very low certainty of evidence, primarily stemming from case series and lack of comparative groups.

Promoting safe and appropriate use of miltefosine to treat tegumentary leishmaniasis in Brazil: A best practice quality improvement project.

INTRODUCTION: Miltefosine is a new drug that was recently approved for the treatment of tegumentary leishmaniasis (TL) by the Brazilian health system. It has a teratogenic potential and requires follow-up of patients undergoing treatment. Improving compliance with best practices is essential to ensure the safe and appropriate use of this drug. OBJECTIVE: This project aimed to implement best practices for the safe and appropriate use of miltefosine in the treatment of TL in the state of Minas Gerais, Brazil. METHODS: This project was guided by the JBI Evidence Implementation Framework. Five best practice criteria were established based on the best available evidence. A baseline audit was conducted to measure current practice against best practice. Barriers to best practice were then identified and a follow-up audit was conducted to evaluate changes after the implementation of improvement strategies. Two sites were analyzed: a leishmaniasis reference service in Belo Horizonte, the capital of Minas Gerais, and the 28 regional offices. RESULTS: The baseline audit evaluated data from 197 miltefosine requests distributed across 13 regional sites. All requests from the reference service were compliant (100%). This is in contrast to the 60% compliance rate at the regional offices. The improvement strategies included intensifying direct communication with the regional health professionals, which increased the average compliance rate to 79.5%, 6 months after the interventions were introduced. CONCLUSION: This best practice implementation project effectively increased the compliance rate for the audited procedures. Communication from the reference site with the regional health professionals successfully increased compliance with best practices and promoted the safe and appropriate use of miltefosine. These strategies should analyzed and applied to improve other programs. SPANISH ABSTRACT: http://links.lww.com/IJEBH/A184.

Detection of Autoantibodies Against the Acetylcholine Receptor, Evaluation of Commercially Available Methodologies: Fixed Cell-Based Assay, Radioimmunoprecipitation Assay and Enzyme-Linked Immunosorbent Assay1.

Background/Objective: Myasthenia Gravis (MG) is an autoimmune disorder characterized by pathogenic autoantibodies (AAbs) targeting nicotinic acetylcholine receptors (AChR), disrupting neuromuscular communication. RadioImmunoPrecipitation Assay (RIPA) is recommended to detect AChR AAbs, but its complexity and radioactive requirements limit widespread use. We compare non-RIPA anti-AChR immunoassays, including Cell-Based Assay (CBA) and two ELISA kits, against the gold standard RIPA. Methods/Results: 145 samples were included with medical indication for anti-AChR testing. By the RIPA method, 63 were negative (RIPA-Neg < 0.02 nmol/L), 18 were classified as Borderline (≥0.02 -1 nmol/L), and 64 were positive (RIPA-Pos > 1 nmol/L). The competitive ELISA showed poor agreement with RIPA (Kappa = 0.216). The indirect ELISA demonstrated substantial agreement with RIPA (Kappa = 0.652), with ∼76% sensitivity and ∼94% specificity for MG diagnostic. The CBA, where fixed cells expressing clustered AChR were used as substrate, exhibited almost perfect agreement with RIPA (Kappa = 0.984), yielding ∼98% sensitivity and 96% specificity for MG. In addition, a semiquantitative analysis showed a strong correlation between CBA titration, indirect ELISA, and RIPA levels (r = 0.793 and r = 0.789, respectively). Conclusions: The CBA displayed excellent analytical performance for MG diagnostic when compared to RIPA, making it a potential replacement for RIPA in clinical laboratories. Some solid-phase assays (such as the indirect ELISA applied here), as well as CBA titration, offer reliable options to estimate anti-AChR AAb levels after confirming positivity by the CBA.∥.

Diagnosis of human brucellosis: Systematic review and meta-analysis.

BACKGROUND: Brucellosis, a widely spread zoonotic disease, poses significant diagnostic challenges due to its non-specific symptoms and underreporting. Timely and accurate diagnosis is crucial for effective patient management and public health control. However, a comprehensive comparative review of available diagnostic tests is lacking. METHODOLOGY/PRINCIPAL FINDINGS: This systematic review addressed the following question: 'What is the accuracy of the available tests to confirm human brucellosis?' Two independent reviewers examined articles published up to January 2023. The review included original studies reporting symptomatic patients with brucellosis suspicion, through any index test, with sensitivity and/or specificity as outcomes. As exclusion criteria were considered: sample size smaller than 10 patients, studies focusing on complicated brucellosis, and those lacking essential information about index or comparator tests. Sensitivity and specificity were assessed, with consideration for the index test, and 'culture' and 'culture and standard tube agglutination test (SAT)' were used as reference standards. Bias assessment and certainty of evidence were carried out using the QUADAS-2 and GRADE tools, respectively. A total of 38 studies reporting diagnostic test performance for human brucellosis were included. However, the evidence available is limited, and significant variability was observed among studies. Regarding the reference test, culture and/or SAT are deemed more appropriate than culture alone. Rose Bengal, IgG/IgM ELISA, and PCR exhibited equally high performances, indicating superior overall diagnostic accuracy, with very low certainty of the evidence. CONCLUSIONS/SIGNIFICANCE: This systematic review underscores the potential of the Rose Bengal test, IgG/IgM ELISA, and PCR as promising diagnostic tools for brucellosis. However, the successful implementation and recommendations for their use should consider the local context and available resources. The findings highlight the pressing need for standardization, improved reporting, and ongoing advancements in test development to enhance the accuracy and accessibility of brucellosis diagnosis.

Efficacy and safety of therapeutic strategies for human brucellosis: A systematic review and network meta-analysis.

BACKGROUND: Human brucellosis is a neglected, re-emerging, and endemic zoonosis in many countries. The debilitating and disabling potential of the disease is a warning about its morbidity, generating socioeconomic impact. This review aims to update the current evidence on the efficacy and safety of therapeutic options for human brucellosis using the network meta-analysis (NMA). METHODOLOGY: A systematic search was conducted in four different databases by independent reviewers to assess overall therapy failure, adverse events, and time to defervescence associated with different therapies. Randomized clinical trials (RCTs) evaluating any therapeutic drug intervention were selected, excluding non-original studies or studies related to localized forms of the disease or with less than 10 participants. Data were analyzed by frequentist statistics through NMA by random effects model. The risk of bias and certainty of evidence was assessed, this review was registered at PROSPERO. RESULTS: Thirty-one (31) RCTs involving 4167 patients were included. Three networks of evidence were identified to evaluate the outcomes of interest. Triple therapy with doxycycline + streptomycin + hydroxychloroquine for 42 days (RR: 0.08; CI 95% 0.01-0.76) had a lower failure risk than the doxycycline + streptomycin regimen. Doxycycline + rifampicin had a higher risk of failure than doxycycline + streptomycin (RR: 1.96; CI 95% 1.27-3.01). No significant difference was observed between the regimens when analyzing the incidence of adverse events and time to defervescence. In general, most studies had a high risk of bias, and the results had a very low certainty of evidence. CONCLUSIONS: This review confirmed the superiority of drugs already indicated for treating human brucellosis, such as the combination of doxycycline and aminoglycosides. The association of hydroxychloroquine to the dual regimen was identified as a potential strategy to prevent overall therapy failure, which is subject to confirmation in future studies.

Effect of ZrO2 paste, surface treatments, and storage on Weibull characteristics and resin bond strength to zirconia.

The objective is to evaluate the effect of different surface treatments and storage on the shear strength of ultratranslucent zirconia. 36 blocks of ultra-translucent zirconia were fabricated (7x7x2mm) and sintered. Then, divided into 12 groups according to the "surface treatment" (C -Primer; Al -Sandblasting with Al2O3 + Primer; Si -Silicate + Primer; Gl -Glaze + HF + Primer; Z -Zirlink; Zp -Zirlink + Primer) and "storage" factors (ST-with 150 days/37º and without). After surface treatment, five cylinders (Ø=2mm; h=2.0mm) of resin cement (n=15) were constructed in each ceramic block; at the end, the shear strength test was performed (1mm/min, 50Kgf), and analysis of surface failures. 60 additional samples (2x2x2mm) were made for extras analysis (surface roughness, MEV, and EDS). Bond strength and surface roughness data were statistically evaluated by ANOVA (2 factors/1 factor), Tukey test (5%), and Weibull analysis, respectively. ANOVA (2-way) revealed that all factors were statistically significant for bond strength. The silicatization groups (SiST: 30.47AMPa; Si: 29.21AMPa) showed the highest bond strength values, regardless of storage (Tukey's test). While the groups treated with Zirlink (ZST: 2.76FMPa; Z: 5.27EFMPa) showed the lowest values, just similar to the GlST group (5.14EFMPa). The Weibull modulus (m) showed a statistical difference between groups (p=0.000). ANOVA (1 factor) revealed that the "surface treatment" factor (p=0.0000) was statistically significant for surface roughness. Therefore, the application of Zirlink and Glaze on pre-sintered zirconia did not promote efficient adhesion of the ultratranslucent zirconia to the resin cement, even when associated with a primer containing MDP.

Sperm Toolbox-A selection of small molecules to study human spermatozoa.

Male contraceptive options and infertility treatments are limited, and almost all innovation has been limited to updates to medically assisted reproduction protocols and methods. To accelerate the development of drugs that can either improve or inhibit fertility, we established a small molecule library as a toolbox for assay development and screening campaigns using human spermatozoa. We have profiled all compounds in the Sperm Toolbox in several automated high-throughput assays that measure stimulation or inhibition of sperm motility or the acrosome reaction. We have assayed motility under non-capacitating and capacitating conditions to distinguish between pathways operating under these different physiological states. We also assayed cell viability to ensure any effects on sperm function are specific. A key advantage of our studies is that all compounds are assayed together in the same experimental conditions, which allows quantitative comparisons of their effects in complementary functional assays. We have combined the resulting datasets to generate fingerprints of the Sperm Toolbox compounds on sperm function. The data are included in an on-line R-based app for convenient querying.

Quality of life of patients with cutaneous leishmaniasis: A comparative analysis of the EQ-5D-3L and CLIQ questionnaires.

PURPOSE: To evaluate the performance of the Cutaneous Leishmaniasis Impact Questionnaire (CLIQ) using the EuroQol-5 Dimension (EQ-5D-3L) as a reference standard (criterion validation); to evaluate the responsiveness of the instruments and estimate a cut-off point for the CLIQ to be able to discriminate between high and low impacts of cutaneous leishmaniasis on patients. METHODS: Between 2020 and 2022, a longitudinal validation study was conducted at a reference centre for leishmaniasis in Brazil. The EQ-5D-3L and CLIQ questionnaires were administered before, during and after treatment for cutaneous leishmaniasis. The correlation between the instruments was assessed using Spearman's correlation coefficient, responsiveness was assessed using the Wilcoxon test, and CLIQ cut-off points were proposed based on results of the EQ-5Q-3L, dichotomized between patients reporting no problems' and 'some or extreme problems'. RESULTS: There were satisfactory correlation coefficients between the two instruments before (-0.596) and during treatment (-0.551) and a low correlation between the instruments after the end of treatment (-0.389). In general, the responsiveness of the instruments was satisfactory. The CLIC scores that maximized sensitivity and specificity for recognizing impaired health status before and during treatment were 7 points and 17 points, respectively. However, at the end of treatment, based on the results for the EQ-5D-3L, the CLIC was not able to discriminate between individuals with high and low impacts of the disease. CONCLUSION: The CLIQ corresponds well with the EQ-5D-3L when applied before and during treatment but does not seem to be appropriate for follow-up evaluations after the end of treatment.

Management of pharmaceutical services in the fight against COVID-19 in universal public health systems: a rapid review.

INTRODUCTION: The coronavirus disease 2019 (COVID-19) pandemic brought new challenges and lessons were learnt for health services. In the field of pharmaceutical care, several interventions have been proposed to optimize and expand the response capacity of services. OBJECTIVE: To identify and characterize interventions performed in the management of pharmaceutical services during the COVID-19 pandemic in universal public health systems. METHODS: A rapid literature review was conducted and registered in PROSPERO (CRD42022360902). Systematic searches in the MEDLINE (PubMed), Embase, and Virtual Health Library databases were conducted to identify interventions and practices adopted for the management of pharmaceutical care during the COVID-19 pandemic. RESULTS: Thirteen articles reporting interventions developed in six countries were included. The interventions were summarized under three major themes: actions for continuous access to medicines, logistical measures for acquisition and storage, and organizational strategies. Telepharmacy services stand out as a typical action adopted in different services, which highlights the use and consolidation of digital technologies in these services. Strategies for process management were described and focused on the reorganization of the internal service of pharmacies, flow of services, and people management. CONCLUSIONS: Many interventions were developed during the pandemic, some of which have already been incorporated into routine service delivery. Although the studies did not measure the effect of each intervention, the strategies developed are a source of information for the future delivery of care. Studies should be conducted to evaluate the potential of similar interventions in other health emergency contexts.

Implementation of health technologies in Brazil: analysis of federal guidelines for the public health system. / Implementação de tecnologias em saúde no Brasil: análise de orientações federais para o sistema público de saúde.

This study aimed to identify the regulatory framework and federal guidelines that support the process of implementing health technologies in the Unified Health System (SUS) through analysis of documents and legislation related to the National Health Technology Management Policy, published between 2009 and 2021. The search and selection of documents and subsequent data extraction were carried out. The documents were grouped into three categories: structural regulatory documents, recommendations on evaluation of technologies, and recommendations on clinical guidelines. In 38.8% of the regulatory documents, citations to implementation related mainly to SUS clinical guidelines were identified; however, no document dedicated to guiding implementation actions was identified. Recommendations related to implementations were identified in 27.1% of the reports and 66.1% of the guidelines, although without standardization and, in general, in little detail, focusing on resources and actions needed for making technology available rather than on methods and interventions for its implementation. The results evidence a gap in formal guidelines to guide the implementation process in Brazil, representing an opportunity for the development of models aligned with the reality of the SUS.

O objetivo foi identificar o arcabouço regulatório e as orientações federais que sustentam o processo de implementação de tecnologias em saúde no Sistema Único de Saúde (SUS), por meio da análise de documentos e legislações relacionados à Política Nacional de Gestão de Tecnologias de Saúde, publicados entre 2009 e 2021. Foi realizada busca e seleção dos documentos e posterior extração de dados, agrupados por três categorias: normativas estruturantes, recomendações na avaliação de tecnologias e recomendações nas diretrizes clínicas. Em 38,8% das normativas, foram identificadas citações à implementação relacionadas principalmente às diretrizes clínicas do SUS, mas nenhum documento dedicado a orientar as ações de implementação. As recomendações relacionadas às implementações foram identificadas em 27,1% dos relatórios e em 66,1% das diretrizes, mas sem padronização e, de modo geral, pouco detalhadas, com foco em recursos e ações necessárias para a disponibilização da tecnologia, ao invés de métodos e intervenções para implementação. Os resultados confirmam a existência de uma lacuna de diretrizes formais para guiar o processo de implementação no Brasil, o que se constitui em oportunidade para o desenvolvimento de modelos alinhados à realidade do SUS.

Mendelian randomization studies on coronary artery disease: a systematic review and meta-analysis.

BACKGROUND: Coronary artery disease (CAD) remains one of the leading causes of mortality worldwide. We aimed to summarize what is currently known with regard to causal modifiable risk factors associated with CAD in populations of diverse ancestries through conducting a systematic review and meta-analysis of Mendelian randomization (MR) studies on CAD. METHODS: The databases Embase, Medline, Cochrane Library and Web of Science were searched on the 19th and 20th of December 2022 for MR studies with CAD as a primary outcome; keywords of the search strategy included "coronary artery disease" and "mendelian randomization". Studies were included if they were published in the English language, included only human participants, employed Mendelian randomization as the primary methodology and studied CAD as the outcome of interest. The exclusion criteria resulted in the removal of studies that did not align with the predefined inclusion criteria, as well as studies which were systematic reviews themselves, and used the same exposure and outcome source as another study. An ancestry-specific meta-analysis was subsequently conducted on studies which investigated either body mass index, lipid traits, blood pressure or type 2 diabetes as an exposure variable. Assessment of publication bias and sensitivity analyses was conducted for risk of bias assessment in the included studies. RESULTS: A total of 1781 studies were identified through the database searches after de-duplication was performed, with 47 studies included in the quantitative synthesis after eligibility screening. Approximately 80% of all included study participants for MR studies on CAD were of European descent irrespective of the exposure of interest, while no study included individuals of African ancestry. We found no evidence of differences in terms of direction of causation between ancestry groups; however, the strength of the respective relationships between each exposure and CAD were different, with this finding most evident when blood pressure was the exposure of interest. CONCLUSIONS: Findings from this review suggest that patterns regarding the causational relationship between modifiable risk factors and CAD do not differ in terms of direction when compared across diverse ancestry populations. Differences in the observed strengths of the respective relationships however are indicative of the value of increasing representation in non-European populations, as novel genetic pathways or functional SNPs relating to CAD may be uncovered through a more global analysis. SYSTEMATIC REVIEW REGISTRATION: The protocol for this systematic review was registered to the International Prospective Register of Systematic Reviews (PROSPERO) and is publicly available online (CRD42021272726).

Untargeted serum metabolomic profiles and breast density in young women.

PURPOSE OF THE STUDY: Breast density is an established risk factor for breast cancer. However, little is known about metabolic influences on breast density phenotypes. We conducted untargeted serum metabolomics analyses to identify metabolic signatures associated with breast density phenotypes among young women. METHODS: In a cross-sectional study of 173 young women aged 25-29 who participated in the Dietary Intervention Study in Children 2006 Follow-up Study, 449 metabolites were measured in fasting serum samples using ultra-high-performance liquid chromatography-tandem mass spectrometry. Multivariable-adjusted mixed-effects linear regression identified metabolites associated with magnetic resonance imaging measured breast density phenotypes: percent dense breast volume (%DBV), absolute dense breast volume (ADBV), and absolute non-dense breast volume (ANDBV). Metabolite results were corrected for multiple comparisons using a false discovery rate adjusted p-value (q). RESULTS: The amino acids valine and leucine were significantly inversely associated with %DBV. For each 1 SD increase in valine and leucine, %DBV decreased by 20.9% (q = 0.02) and 18.4% (q = 0.04), respectively. ANDBV was significantly positively associated with 16 lipid and one amino acid metabolites, whereas no metabolites were associated with ADBV. Metabolite set enrichment analysis also revealed associations of distinct metabolic signatures with %DBV, ADBV, and ANDBV; branched chain amino acids had the strongest inverse association with %DBV (p = 0.002); whereas, diacylglycerols and phospholipids were positively associated with ANDBV (p ≤ 0.002), no significant associations were observed for ADBV. CONCLUSION: Our results suggest an inverse association of branched chain amino acids with %DBV. Larger studies in diverse populations are needed.

Implementação de tecnologias em saúde no Brasil: análise de orientações federais para o sistema público de saúde / Implementation of health technologies in Brazil: analysis of federal guidelines for the public health system

Resumo O objetivo foi identificar o arcabouço regulatório e as orientações federais que sustentam o processo de implementação de tecnologias em saúde no Sistema Único de Saúde (SUS), por meio da análise de documentos e legislações relacionados à Política Nacional de Gestão de Tecnologias de Saúde, publicados entre 2009 e 2021. Foi realizada busca e seleção dos documentos e posterior extração de dados, agrupados por três categorias: normativas estruturantes, recomendações na avaliação de tecnologias e recomendações nas diretrizes clínicas. Em 38,8% das normativas, foram identificadas citações à implementação relacionadas principalmente às diretrizes clínicas do SUS, mas nenhum documento dedicado a orientar as ações de implementação. As recomendações relacionadas às implementações foram identificadas em 27,1% dos relatórios e em 66,1% das diretrizes, mas sem padronização e, de modo geral, pouco detalhadas, com foco em recursos e ações necessárias para a disponibilização da tecnologia, ao invés de métodos e intervenções para implementação. Os resultados confirmam a existência de uma lacuna de diretrizes formais para guiar o processo de implementação no Brasil, o que se constitui em oportunidade para o desenvolvimento de modelos alinhados à realidade do SUS.

Abstract This study aimed to identify the regulatory framework and federal guidelines that support the process of implementing health technologies in the Unified Health System (SUS) through analysis of documents and legislation related to the National Health Technology Management Policy, published between 2009 and 2021. The search and selection of documents and subsequent data extraction were carried out. The documents were grouped into three categories: structural regulatory documents, recommendations on evaluation of technologies, and recommendations on clinical guidelines. In 38.8% of the regulatory documents, citations to implementation related mainly to SUS clinical guidelines were identified; however, no document dedicated to guiding implementation actions was identified. Recommendations related to implementations were identified in 27.1% of the reports and 66.1% of the guidelines, although without standardization and, in general, in little detail, focusing on resources and actions needed for making technology available rather than on methods and interventions for its implementation. The results evidence a gap in formal guidelines to guide the implementation process in Brazil, representing an opportunity for the development of models aligned with the reality of the SUS.

Effect of ZrO2 paste, surface treatments, and storage on Weibull characteristics and resin bond strength to zirconia

Abstract The objective is to evaluate the effect of different surface treatments and storage on the shear strength of ultratranslucent zirconia. 36 blocks of ultra-translucent zirconia were fabricated (7x7x2mm) and sintered. Then, divided into 12 groups according to the "surface treatment" (C -Primer; Al -Sandblasting with Al2O3 + Primer; Si -Silicate + Primer; Gl -Glaze + HF + Primer; Z -Zirlink; Zp -Zirlink + Primer) and "storage" factors (ST-with 150 days/37º and without). After surface treatment, five cylinders (Ø=2mm; h=2.0mm) of resin cement (n=15) were constructed in each ceramic block; at the end, the shear strength test was performed (1mm/min, 50Kgf), and analysis of surface failures. 60 additional samples (2x2x2mm) were made for extras analysis (surface roughness, MEV, and EDS). Bond strength and surface roughness data were statistically evaluated by ANOVA (2 factors/1 factor), Tukey test (5%), and Weibull analysis, respectively. ANOVA (2-way) revealed that all factors were statistically significant for bond strength. The silicatization groups (SiST: 30.47AMPa; Si: 29.21AMPa) showed the highest bond strength values, regardless of storage (Tukey's test). While the groups treated with Zirlink (ZST: 2.76FMPa; Z: 5.27EFMPa) showed the lowest values, just similar to the GlST group (5.14EFMPa). The Weibull modulus (m) showed a statistical difference between groups (p=0.000). ANOVA (1 factor) revealed that the "surface treatment" factor (p=0.0000) was statistically significant for surface roughness. Therefore, the application of Zirlink and Glaze on pre-sintered zirconia did not promote efficient adhesion of the ultratranslucent zirconia to the resin cement, even when associated with a primer containing MDP.

Resumo O objetivo é avaliar o efeito de diferentes tratamentos superficiais e do envelhecimento na resistência ao cisalhamento da zircônia ultratranslúcida. Foram confeccionados 36 blocos de zircônia ultratranslúcida (7x7x2mm) e sinterizados. Em seguida, divididos em 12 grupos de acordo com o "tratamento de superfície" (C-Primer; Al-Jateamento com Al2O3+Primer; Si-Silicato+Primer; Gl -Glaze+HF+Primer; Z-Zirlink; Zp-Zirlink+Primer) e fatores de "armazenamento" (ST-com, 150 dias/37º e sem). Após o tratamento superficial, foram construídos cinco cilindros (Ø=2mm; h=2,0mm) de cimento resinoso (n=15) em cada bloco cerâmico; ao final foi realizado o ensaio de resistência ao cisalhamento (1mm/min, 50Kgf) e análise de falhas superficiais. Foram confeccionadas 60 amostras adicionais (2x2x2mm) para análises extras (rugosidade superficial, MEV e EDS). Os dados de resistência de união e rugosidade superficial foram avaliados estatisticamente por ANOVA (2 fatores/1fator), teste de Tukey (5%) e análise de Weibull, respectivamente. ANOVA (2 fatores) revelou que todos os fatores foram estatisticamente significativos para a resistência de união. Os grupos de silicatização (SiST: 30,47AMPa; Si: 29,21AMPa) apresentaram os maiores valores de resistência de união, independente do armazenamento (Tukey). Enquanto os grupos tratados com Zirlink (ZST: 2,76FMPa; Z: 5,27EFMPa) apresentaram os valores mais baixos, apenas semelhantes ao grupo GlST (5,14EFMPa). O módulo de Weibull (m) apresentou diferença estatística entre os grupos (p=0,000). A ANOVA (1 fator) revelou que o fator "tratamento superficial" (p=0,0000) foi estatisticamente significativo para rugosidade superficial. Portanto, a aplicação de Zirlink e do Glaze na zircônia pré-sinterizada não promoveu adesão eficiente da zircônia ultratranslúcida ao cimento resinoso, mesmo quando associada a primer contendo MDP.

Use of Psychotropic Drugs during the COVID-19 pandemic in Minas Gerais, Brazil.

OBJECTIVE: To describe the profile of dispensation of mental health drugs by analyzing trends in use before and during the COVID-19 pandemic within the Unified Health System (Sistema Único de Saúde [SUS]). METHODS: Pharmacoepidemiological study based on the retrospective analysis of records regarding the dispensation of psychotropic medicines in the SUS database in the state of Minas Gerais between 2018 and 2021, considering the periods before (2018-2019) and during the COVID-19 pandemic (2020-2021). A database with the records of dispensation of municipalities was created, and the consistency of releases was verified using the Analysis of Variance (ANOVA) test. Medicine consumption was measured in a defined daily dose (DDD) per 1,000 inhabitants/day for SUS, and the difference between periods was evaluated using Student's t-test. RESULTS: During the COVID-19 pandemic, there was an increase in the consumption of psychotropic drugs in SUS-MG. The most consumed medicines were fluoxetine hydrochloride, diazepam and phenobarbital sodium (DDD=5.89; 3.42; 2.49) in the Basic Pharmaceutical Services Component(CBAF), and olanzapine, risperidone and quetiapine hemifumarate (DDD=0.80; 0.47; 0.38) in the Specialized Pharmaceutical Services Component (CEAF). The highest percentage increase in consumption was attributed to clonazepam (75.37%) and lithium carbonate (35.35%), in CBAF, and levetiracetam (3,000.00%) and memantine hydrochloride (340.0%) in CEAF. CONCLUSION: The change in the psychotropic drug dispensation profile during the COVID-19 pandemic highlights the need to produce more studies to complete, confirm or rule out this profile and monitor the use of psychotropic drugs by the population in the post-pandemic context.

Genome-wide association studies on coronary artery disease: A systematic review and implications for populations of different ancestries.

BACKGROUND: Cardiovascular diseases are some of the leading causes of death worldwide, with coronary artery disease leading as one of the primary causes of mortality in both the developing and developed worlds. Despite its prevalence, there is a disproportionately small number of studies conducted in populations of non-European ancestry, with the limited sample sizes of such studies further restricting the power and generalizability of respective findings. This research aimed at understanding the differences in the genetic architecture of coronary artery disease (CAD) in populations of diverse ancestries in order to contribute towards the understanding of the pathophysiology of coronary artery disease. METHODS: We performed a systematic review on the 6th of October, 2022 summarizing genome-wide association studies on coronary artery disease, while employing the GWAS Catalog as an independent database to support the search. We developed a framework to assess the methodological quality of each study. We extracted and grouped associated single nucleotide polymorphisms and genes according to ancestry groups of participants. RESULTS: We identified 3100 studies, of which, 36 relevant studies were included in this research. Three of the studies that were included were not listed in the GWAS Catalog, highlighting the value of conducting an independent search alongside established databases in order to ensure the full research landscape has been captured. 743,919 CAD case participants from 25 different countries were analysed, with 61% of the studies identified in this research conducted in populations of European ancestry. No studies investigated populations of Africans living in continental Africa or admixed American ancestry groups besides African-Americans, while limited sample sizes were included of population groups besides Europeans and East Asians. This observed disproportionate population representation highlights the gaps in the literature, which limits our ability to understand coronary artery disease as a global disease. 71 genetic loci were identified to be associated with coronary artery disease in more than one article, with ancestry-specific genetic loci identified in each respective population group which were not detected in studies of other ancestries. CONCLUSIONS: Although the replication and validation of these variants are still warranted, these finding are indicative of the value of including diverse ancestry populations in GWAS reference panels, as a more comprehensive understanding of the genetic architecture and pathophysiology of CAD can be achieved.

Malignant lung PEComa (clear cell tumor): rare case report and literature review.

Clear cell tumors of the lung (CCTL), or "sugar tumors" of lung, are very uncommon lesions and are mostly benign perivascular epithelioid cell (PEC) tumors with no specific morphologic features. Fewer than 100 cases have been reported; the aggressive nature demonstrated in sporadic reports has rarely been described in the literature. Although the course is generally described as benign, eight reported cases showed malignant behavior. We report a case of a PEC with a malignant presentation in a young man, correlating the main characteristics of the tumor with other cases reported in the literature to better elucidate this rare presentation. We also performed a literature review of reports on benign and malignant CCTL cases, with a focus on clinical, imaging, and immunohistochemical differentiation. CCTLs are rare tumors that require histopathological and immunohistochemical confirmation; to date, criteria that can predict malignant evolution are lacking.