A Bibliometric Analysis of the 100 Most-Cited Articles Concerning Atraumatic Restorative Treatment.

INTRODUCTION: The present study aimed to identify the 100 most-cited articles concerning atraumatic restorative treatment (ART) through a bibliometric analysis. METHODS: The search was conducted in the Web of Science database in December 2023. Scopus and Google Scholar were used to compare the number of citations. The following data were extracted from the articles: title, authors, number of citations, access type, institution, country, continent, year of publication, journal, keywords, study design, and theme. Collaborative networks were generated using the VOSviewer software. Google Trends was used to investigate the global popularity of "atraumatic restorative treatment" research. RESULTS: The 100 selected articles, published between 1996 and 2019, were cited 5,092 times, ranging from 21 to 239 citations. CariesResearch (12%) and Community Dentistry and Oral Epidemiology (12%) published the highest number of articles. Clinical study (52%) was the most prevalent study design. The main theme addressed was restoration longevity (43%). Conventional high-viscosity glass ionomer was the most used restorative material (69%). The country with the highest number of articles was The Netherlands (33%) and Europe was the continent with most publications (38%). The Radboud University of Nijmegen had the highest number of articles (25%). Frencken was the most prominent author (38%). The most common keyword was "atraumatic restorative treatment" (n = 60). According to Google Trends, Tanzania was the country that searched the most about ART. CONCLUSION: The 100 most-cited articles on ART were mainly composed of clinical studies focusing on the longevity of restorations and originated in Europe.

Proteomic Analysis of a Rat Streptozotocin Model Shows Dysregulated Biological Pathways Implicated in Alzheimer's Disease.

Alzheimer's Disease (AD) is an age-related neurodegenerative disorder characterized by progressive memory loss and cognitive impairment, affecting 35 million individuals worldwide. Intracerebroventricular (ICV) injection of low to moderate doses of streptozotocin (STZ) in adult male Wistar rats can reproduce classical physiopathological hallmarks of AD. This biological model is known as ICV-STZ. Most studies are focused on the description of behavioral and morphological aspects of the ICV-STZ model. However, knowledge regarding the molecular aspects of the ICV-STZ model is still incipient. Therefore, this work is a first attempt to provide a wide proteome description of the ICV-STZ model based on mass spectrometry (MS). To achieve that, samples from the pre-frontal cortex (PFC) and hippocampus (HPC) of the ICV-STZ model and control (wild-type) were used. Differential protein abundance, pathway, and network analysis were performed based on the protein identification and quantification of the samples. Our analysis revealed dysregulated biological pathways implicated in the early stages of late-onset Alzheimer's disease (LOAD), based on differentially abundant proteins (DAPs). Some of these DAPs had their mRNA expression further investigated through qRT-PCR. Our results shed light on the AD onset and demonstrate the ICV-STZ as a valid model for LOAD proteome description.

Association of Parental Support with Reduced Stereotypy in Children with Autism Spectrum Disorder: A Cross-Sectional Study.

Background and Objectives: To analyze the influence of parental presence and use of risperidone on social interaction and apathy among patients with Autism Spectrum Disorder (ASD). Materials and Methods: Cross-sectional study in a reference center for patients with ASD in a city in northeastern Brazil. The research was carried out using a sociodemographic questionnaire, the Dimensional Apathy Scale, and the Social Communication Questionnaire (SCQ) with the domains of social interaction, language, stereotypy, and communication. The referred questionnaire was answered by the parents or guardians of the children with ASD according to the DSM V criteria. Data were analyzed via independent t-test using the SPSS software version 20. Results: Interviews were conducted with 51 parents/guardians of autistic children with a mean age of 8.8 years (±2.95) and a predominance of males, 34 (66.7%). Of this total, 49 (96.1%) of the children attended school; 40 (78.4%) children were on medication, of which 38 (74.5%) were on risperidone. Those children on risperidone had a higher score on the SCQ scale (p = 0.049) and on the domain of stereotyped behaviors (p = 0.033), which indicated greater impairment. Another statistically relevant variable was the presence of married parents, whereby children who did not have the presence of married parents had a higher average of stereotyped behaviors compared to those who had married parents. Conclusions: The results showed differences in the means of social interactions for children on risperidone, especially regarding stereotyped behaviors. However, it is not possible to state whether this difference was due to the use of risperidone or whether they used risperidone precisely because of these behaviors. Also important was that children who had the presence of married parents showed fewer stereotyped behaviors. There was no difference in apathetic behavior between children.

Diagnostic accuracy of Xpert MTB/RIF for tuberculous meningitis: systematic review and meta-analysis.

OBJECTIVE: This systematic review evaluated the diagnostic accuracy of Xpert MTB/RIF to detect tuberculous meningitis (TBM). METHODS: PubMed and five other databases were systematically searched through March 2019. All studies evaluating diagnostic accuracy of Xpert MTB/RIF on cerebrospinal fluid (CSF) samples were included. Reference standards were definitive or definite plus probable TBM. The quality of studies was assessed by the QUADAS-2 tool. We performed bivariate random-effects meta-analysis and calculated summary diagnostic statistics. RESULTS: We identified 30 studies (n = 3972 participants), including 5 cohort studies and 25 cross-sectional studies. Reference standards were definite TB (n = 28 studies) or definite plus probable TBM (n = 6 studies). The pooled Xpert MTB/RIF sensitivity was 85% (95% CI, 70-93%), and specificity was 98% (95% CI, 97-99%) with a negative likelihood ratio of 0.15 (95% CI, 0.04-0.27) for definite TBM. For probable TBM cases, pooled sensitivity was 81% (95% CI, 66-90%), and specificity was 99% (95% CI, 97-99%). For both reference standard types, meta-analyses showed a C-statistic area under the curve of 0.98. The QUADAS-2 tool revealed low risk of bias as well as low concerns regarding applicability. Methodological heterogeneity was high among studies. CONCLUSIONS: Xpert MTB/RIF showed high accuracy for TBM diagnosis, but a negative Xpert MTB/RIF test does not rule out TBM. Repeat Xpert testing may be necessary. In clinical practice, Xpert MTB/RIF adds speed and sensitivity when compared to classic TBM diagnostic methods or previous commercial nucleic acid amplification techniques. More studies and better strategies for rapidly confirming a diagnosis of TBM in children are urgently needed.

OBJECTIF: Cette revue systématique a évalué la précision diagnostique de Xpert MTB/RIF pour détecter la méningite tuberculeuse (MTB). MÉTHODES: PubMed et cinq autres bases de données ont fait l'objet d'une recherche systématique jusqu'en mars 2019. Toutes les études évaluant la précision du diagnostic de Xpert MTB/RIF sur des échantillons de liquide céphalo-rachidien (LCR) ont été incluses. Les étalons de référence étaient des MTB définitives ou définitives et probables. La qualité des études a été évaluée par l'outil QUADAS-2. Nous avons effectué une méta-analyse des effets aléatoires bivariés et calculé des statistiques de résumés diagnostiques. RÉSULTATS: Nous avons identifié 30 études (n = 3.972 participants), dont 5 études de cohorte et 25 études transversales. Les étalons de référence étaient la TB définitive (n = 28 études) ou la MTB définitive et probable (n = 6 études). La sensibilité poolée Xpert MTB/RIF était de 85% (IC95%: 70-93%) et la spécificité était de 98% (IC95%: 97-99%) avec un rapport de vraisemblance négatif de 0,15 (IC95%: 0,04-0,27) pour la MTB définitive. Pour les cas probables de la MTB, la sensibilité poolée était de 81% (IC95%: 66-90%) et la spécificité était de 99% (IC95%: 97-99%). Pour les deux types d'étalons de référence, les méta-analyses ont montré une aire statistique C sous la courbe de 0,98. L'outil QUADAS-2 a révélé un faible risque de biais ainsi que de faibles préoccupations concernant l'applicabilité. L'hétérogénéité méthodologique était élevée parmi les études. CONCLUSIONS: Xpert MTB/RIF a montré une grande précision pour le diagnostic de la MTB, mais un test Xpert MTB/RIF négatif n'exclut pas la MTB. La répétition du tests Xpert peut être nécessaire. Dans la pratique clinique, Xpert MTB/RIF ajoute vitesse et sensibilité par rapport aux méthodes de diagnostic classiques de la MTB ou aux précédentes techniques d'amplification d'acide nucléique commerciales. Des études supplémentaires et de meilleures stratégies pour confirmer rapidement un diagnostic de MTB chez les enfants sont nécessaires d'urgence.

Correction to: Treatment modalities for burning mouth syndrome: a systematic review.

The original version of this article contained two mistakes. First, in the subchapter "Alpha-lipoic acid (ALA)" page 1895, reference 4 is cited three times, however reference 42 is the correct one.

Treatment of actinic cheilitis: a systematic review.

OBJECTIVES: Actinic cheilitis is a potentially malignant disorder caused by excessive sun exposure. It affects the lower lip of individuals, mostly those with light skin color. Different treatments have been proposed for AC; however, no consensus has been reached on the best option available. MATERIALS AND METHODS: The present study describes the results of a computer-based systematic search conducted on electronic databases to identify the best therapies. RESULTS: A total of 29 journal articles were selected, and the results were divided according to the type of treatment employed: laser therapy, chemotherapy agents, surgical treatment, and application of anti-inflammatory agents. Clinically, photodynamic therapy showed positive results, with improvement in up to 100% of the patients; however, histopathological improvement varied greatly, from 16 to 100%. Among the chemotherapeutic agents assessed, imiquimod showed the best results: clinical improvement in 80 to 100% of the patients, and histopathological improvement in 73 to 100%. Regarding studies describing surgical approaches, the main focus was the search for the best technique, rather than the cure of AC. Finally, studies employing anti-inflammatory agents are sparse and have small samples, thus providing limited results. CONCLUSION: The scientific evidence available on the treatment of AC is scarce and heterogeneous, photodynamic therapy, and imiquimod application are promising. CLINICAL RELEVANCE: The study of the treatments for AC in the form of a systematic review allows us to evaluate the results against the different treatments. Being a potentially malignant lesion, it is important to seek evidence about the best results found.

Treatment modalities for burning mouth syndrome: a systematic review.

OBJECTIVES: In the burning mouth syndrome (BMS), patients experience a burning sensation in the oral cavity with no associated injury or clinical manifestation. The etiology of this condition is still poorly understood, and therefore, treatment is challenging. The aim of this study is to perform a systematic review of treatment possibilities described in the literature for BMS. MATERIALS AND METHODS: PubMed, Embase, and SciELO databases were searched for randomized clinical trials published between 1996 and 2016. RESULTS: Following application of inclusion and exclusion criteria, 29 papers were analyzed and divided into five subcategories according to the type of treatment described: antidepressants, alpha-lipoic acid, phytotherapeutic agents, analgesic and anti-inflammatory agents, and non-pharmacological therapies. In each category, the results found were compared with regard to the methodology employed, sample size, assessment method, presence or absence of adverse effects, and treatment outcomes. CONCLUSIONS: The analysis revealed that the use of antidepressants and alpha-lipoic acid has been showing promising results; however, more studies are necessary before we can have a first-line treatment strategy for patients with BMS. CLINICAL RELEVANCE: To review systematically the literature about Burning Mouth Syndrome treatment may aid the clinicians to choose the treatment modality to improve patients symptoms based on the best evidence.

Polybrominated diphenyl ethers (PBDEs) effects on Chironomus sancticaroli larvae after short-term exposure.

In-vivo effects of polybrominated diphenyl ethers (PBDEs) containing 3, 4 and 5 bromine atoms were tested on fourth-instar larvae of Chironomus sancticaroli (Diptera: Chironomidae) after 48h of exposure, by measuring the activity of the acetyl cholinesterase, alpha and beta esterases and glutathione S-transferase. The PBDE congeners 2,2',4-triBDE (BDE-17), 2,2',4,4'-tetraBDE (BDE-47) and 2,2',4,4',5-pentaBDE (BDE-99) were evaluated at 0.5, 1.0, 2.0 and 3.0ngmL-1. Acetyl cholinesterase activity decreased significantly (p≤0.05) at all evaluated concentrations of the three PBDE congeners, except for larvae exposed to BDE-17 at 1.0 and 2.0ngmL-1. The significant inhibition of acetyl cholinesterase activity ranged from 18% (BDE-47 at 0.5ngmL-1) to 72% (BDE-47 at 2.0ngmL-1). The enzymes alpha and beta esterase were also affected by the three congeners, reducing their activity from 14% (BDE-99 at 1.0ngmL-1) to 52% (BDE-47 at 2.0ngmL-1) and from 7% (BDE-99 at 2.0ngmL-1) to 34% (BDE-47 at 3.0ngmL-1) respectively. Substantial increments in glutathione S-transferase activity were similarly observed, varying from 138% (BDE-99 2.0 at ng mL-1) to 346% (BDE-17 at 1.0ngmL-1). DNA strand breaks were detected exclusively in larvae exposed to BDE-99 at 2.0 and 3.0ngmL-1 (H=11.7, p=0.019). These results showed that C. sancticaroli larvae were sensitive to the PBDEs treatments under the experimental conditions.

Effect of information on the perception of users and prospective users of combined oral contraceptives regarding the risk of venous thromboembolism.

This study evaluated patients' knowledge on the risk of venous thromboembolism (VTE) associated with combined oral contraceptives (COCs) and their perception of this risk when it is presented as a relative risk (RR), absolute risk (AbR) or attributable risk (AR). This was a cross-sectional study involving 159 users or potential users of COCs. The participants answered a self-administered questionnaire in which the risk of VTE associated with COCs was presented as RR, AbR and AR. The degree of concern expressed regarding this risk and the women's changes of opinion when the information was communicated through a different risk model were evaluated. Most of the women (67.9%) expressed concern when the risk was presented as an RR. Conversely, they showed no concern when the risk was presented as an AbR (14.5%) or AR (10.7%). A significant number of women changed their opinion regarding their level of concern when the risk was presented as an AbR or AR (p < 0.001). In conclusion, concerns about thrombotic complications from the use of combined hormonal contraception is reduced when incidence rather than relative risk is presented. Presentation of thrombosis complications in terms of incidence rather than RR may improve communication of side effects during counseling for combined hormonal contraception initiation.

The Potential of Photodynamic Therapy Using Solid Lipid Nanoparticles with Aluminum Phthalocyanine Chloride as a Nanocarrier for Modulating Immunogenic Cell Death in Murine Melanoma In Vitro.

Photodynamic therapy (PDT) uses a photosensitizer to generate reactive oxygen species (ROS) that kill target cells. In cancer treatments, PDT can potentially induce immunogenic cell death (ICD), which is characterized by a well-controlled exposure of damage-associated molecular patterns (DAMPs) that activate dendritic cells (DCs) and consequently modulate the immune response in the tumor microenvironment. However, PDT still has limitations, such as the activity of photosensitizers in aqueous media and poor bioavailability. Therefore, a new photosensitizer system, SLN-AlPc, has been developed to improve the therapeutic efficacy of PDT. In vitro experiments showed that the light-excited nanocarrier increased ROS production in murine melanoma B16-F10 cells and modulated the profile of DCs. PDT induced cell death accompanied by the exposure of DAMPs and the formation of autophagosomes. In addition, the DCs exposed to PDT-treated B16-F10 cells exhibited morphological changes, increased expression of MHCII, CD86, CD80, and production of IL-12 and IFN-γ, suggesting immune activation towards an antitumor profile. These results indicate that the SLNs-AlPc protocol has the potential to improve PDT efficacy by inducing ICD and activating DCs.

Characterization of teaching-learning tutors in public health services and topics of interest for their work.

OBJECTIVE: To describe the profile of teaching-learning tutors in public health services and investigate which topics are of greatest interest in development spaces for these actors. METHOD: Cross-sectional study. Eligible tutors of Health Care Planning. Data collection using an electronic questionnaire composed of closed questions on sociodemographic characteristics, training and performance. Chi-square test used to compare proportions according to tutor typologies. RESULTS: A total of 614 tutors worked in Brazil's five geographic regions, the majority in primary care (82%), followed by state/regional work (13%) and specialized outpatient care (5%). The majority reported being female, of brown skin color, from the nursing field, having worked as a tutor for less than a year, and with no previous experience in preceptorship or similar. The most important topics were Health Care Networks, risk stratification for chronic conditions and the functions of specialized outpatient care. CONCLUSION: The predominance of certain characteristics among tutors was identified, with differences between the types of work. The findings can support managers in the process of selecting and developing tutors in Health Care Planning.

Epidemiological and molecular surveillance of norovirus in the Brazilian Amazon: description of recombinant genotypes and improvement of evolutionary analysis.

Noroviruses are highly infectious, genetically diverse viruses. Global outbreaks occur frequently, making molecular surveillance important for infection monitoring. This cross-sectional descriptive study aimed to monitor cases of norovirus gastroenteritis in the Brazilian Amazon. Fecal samples were tested by immunoenzymatic assay, RT-PCR and genetic sequencing for the ORF1/ORF2 and protease regions. Bayesian inference with a molecular clock was employed to construct the phylogeny. The norovirus prevalence was 25.8%, with a higher positivity rate among children aged 0-24 months. Genogroup GII accounted for 98.1% of the sequenced samples, while GI accounted for 1.9% of them. The GII.P16/GII.4 genotype was the most prevalent, with an evolution rate of 2.87x10-3 and TMRCA estimated in 2012. This study demonstrates that norovirus is a primary causative agent of gastroenteritis and provides data on viral genetic diversity that may facilitate infection surveillance and vaccine development.

The potential of five c-miRNAs as serum biomarkers for Late-Onset Alzheimer's disease diagnosis: miR-10a-5p, miR-29b-2-5p, miR-125a-5p, miR-342-3p, and miR-708-5p.

The nervous system is rich in miRNAs, indicating an important role of these molecules in regulating processes associated with cognition, memory, and others. Therefore, qualitative and quantitative imbalances involving such miRNAs may be involved in dementia contexts, including Late-Onset Alzheimer's Disease (LOAD). To test the viability of circulating miRNAs (c-miRNAs) as biomarkers for LOAD, we proceed accordingly to the following reasoning. The first stage was to discover and identify profile of c-miRNAs by RNA sequencing (RNA-Seq). For this purpose, blood serum samples were used from LOAD patients (n = 5) and cognitively healthy elderly control group (CTRL_CH) (n = 5), all over 70 years old. We identified seven c-miRNAs differentially expressed (p ≤ 0.05) in the serum of LOAD patients compared to CTRL_CH (miR-10a-5p; miR-29b-2-5p; miR-125a-5p; miR-342-3p, miR-708-5p, miR-380-5p and miR-340-3p). Of these, five (p ≤ 0.01) were selected for in silico analysis (miR-10a-5p; miR-29b-2-5p; miR-125a-5p; miR-342-3p, miR-708-5p), for which 44 relevant target genes were found regulated by these c-miRNAs and related to LOAD. Through the analysis of these target genes in databases, it was possible to observe that they have functions related to the development and progress of LOAD, directly or indirectly connecting the different Alzheimer's pathways. Thus, this work found five promising serum c-miRNAs as options for biomarkers contributing to LOAD diagnosis. Our study shows the complex network between these molecules and LOAD, supporting the relevance of studies using c-miRNAs in dementia contexts.

The levonorgestrel-releasing intrauterine system: its effect on the number of hysterectomies performed in perimenopausal women with uterine fibroids.

This prospective observational study was designed to determine the percentage of hysterectomies avoided following insertion of a levonorgestrel-releasing intrauterine system (LNG-IUS) in perimenopausal women with uterine fibroids and a prior indication for surgery. The study also compared the progress of patients using the LNG-IUS with those submitted to hysterectomy, with particular emphasis on the patient's satisfaction with treatment. Sixty perimenopausal patients with uterine fibroids and excessive bleeding referred for hysterectomy were included. After counseling on the possibility of non-surgical treatment, 39 patients opted to use an LNG-IUS while 21 opted for hysterectomy. Continuation of LNG-IUS use and the patient's satisfaction with the chosen procedure were assessed. A secondary analysis evaluated hemoglobin levels, clinical complications, bleeding patterns and uterine volume at ultrasonography over time. After 24 months of follow-up, four of the patients who had opted to use an LNG-IUS were submitted to surgery, while 35 continued using the device, thus avoiding hysterectomy in 89.5% of cases. LNG-IUS users were more satisfied with treatment (p = 0.02) compared to those submitted to hysterectomy. In conclusion, the use of the LNG-IUS enables the number of hysterectomies to be reduced in women with uterine fibroids and is associated with greater satisfaction compared to surgical treatment.

Western diet-induced mouse model of non-alcoholic fatty liver disease associated with metabolic outcomes: Features of gut microbiome-liver-adipose tissue axis.

OBJECTIVES: Non-alcoholic fatty liver disease (NAFLD) has a growing epidemiologic and economic burden. It is associated with Western diet (WD) patterns, and its pathogenesis involves metabolic disorders (obesity, dyslipidemia, hyperglycemia, and diabetes) and gut dysbiosis, features that are usually neglected or not reproduced by most animal models. Thus, we established a 6-mo WD-induced NAFLD mouse model associated with metabolic disorder, investigating its main features at the gut microbiome-liver-adipose tissue axis, also evaluating the correlations of gut dysbiosis to the other disease outcomes. METHODS: Male C57 BL6 mice received a high-fat (30% lard and 0.2% cholesterol, ∼57% calories) and sucrose-rich (20%) chow, and a high-sugar solution (23.1 and 18.9 g/L of D-fructose and D-glucose) for 6 mo. RESULTS: The model featured high serum cholesterol levels, glucose intolerance, and hyperinsulinemia. WD intervention resulted in extensive macro/microvesicular liver steatosis and pericellular fibrosis-resembling human disease-accompanied by hepatic stellate cell activation and CD68+ macrophage infiltration, increased protein levels of proinflammatory p65-nuclear factor-κB, interleukin-6 and tumor necrosis factor-α, with decreased antioxidant regulator Nrf2. Mice showed clear obesity with adipocyte hypertrophy, and CD68+macrophage/mast cell infiltration in adipose tissue while a reduction in number of goblet cells was also observed in the small intestine. Moreover, the pyrosequencing of the 16 S ribosomal RNA of gut cecal content showed decreased bacterial diversity, enriched Firmicutes and Proteobacteria, decreased Bacteroidetes and Fusobacteria, and increased ratio of Firmicutes to Bacteroidetes. Bacteroidetes and Bacteroides had the highest number of significant correlations with liver-adipose tissue axis outcomes. In silico analysis of gut microbiome in NAFLD obese patients revealed a depletion in Bacteroides, which also correlated to disease outcomes. CONCLUSION: This mice model gathered suitable phenotypical alterations in gut-liver-adipose tissue axis that resembled NAFLD associated with metabolic disorders in humans and may be considered for preclinical investigation.

Development of New Natural Lipid-Based Nanoparticles Loaded with Aluminum-Phthalocyanine for Photodynamic Therapy against Melanoma.

Photodynamic therapy (PDT) mediated by photosensitizers loaded in nanostructures as solid lipid nanoparticles has been pinpointed as an effective and safe treatment against different skin cancers. Amazon butters have an interesting lipid composition when it comes to forming solid lipid nanoparticles (SLN). In the present report, a new third-generation photosensitizing system consisting of aluminum-phthalocyanine associated with Amazon butter-based solid lipid nanoparticles (SLN-AlPc) is described. The SLN was developed using murumuru butter, and a monodisperse population of nanodroplets with a hydrodynamic diameter of approximately 40 nm was obtained. The study of the permeation of these AlPc did not permeate the analyzed skin, but when incorporated into the system, SLN-AlPc allowed permeation of almost 100% with 8 h of contact. It must be emphasized that SLN-AlPc was efficient for carrying aluminum-phthalocyanine photosensitizers and exhibited no toxicity in the dark. Photoactivated SLN-AlPc exhibited a 50% cytotoxicity concentration (IC50) of 19.62 nM when applied to B16-F10 monolayers, and the type of death caused by the treatment was apoptosis. The exposed phospholipid phosphatidylserine was identified, and the treatment triggered a high expression of Caspase 3. A stable Amazon butter-based SLN-AlPc formulation was developed, which exhibits strong in vitro photodynamic activity on melanoma cells.

Beneficial effects of anthocyanin-rich peels of Myrtaceae fruits on chemically-induced liver fibrosis and carcinogenesis in mice.

Hepatocellular carcinoma (HCC) arising from fibrosis/cirrhosis is the most common type of primary liver cancer. Conversely, a higher intake of fruits and vegetables might play a protective role in HCC risk. Recently, Myrtaceae family tropical fruits have raised great interest due to the high levels of anthocyanins especially in their peels, which are usually discarded upon consumption. Anthocyanins are antioxidant pigments known to have beneficial effects in vivo/in vitro cancer bioassays. Thus, we evaluated whether dietary Myrciaria jaboticaba, Syzygium cumini, and Syzygium malaccense fruit peel powders reduce fibrosis and hepatocarcinogenesis in mice. Female C3H/HeJ mice were submitted to the model of diethylnitrosamine/carbon tetrachloride-induced liver fibrosis and carcinogenesis. Concomitantly, mice received a basal diet containing 2% of M. jaboticaba, S. cumini, or S. malaccense fruit peel powders, obtained by convective drying, for 10 weeks. M. jaboticaba peel powder showed the highest levels of total anthocyanins, while S. cumini peel powder displayed the greatest diversity of these pigments. All Myrtaceae family peel powders reduced the serum levels of the liver injury marker alanine aminotransferase. M. jaboticaba peel feeding reduced the incidence of liver preneoplastic foci, hepatocyte proliferation (Ki-67), and the protein levels of hepato-mitogen tumor necrosis factor-alpha (TNF-α). M. jaboticaba peel feeding also diminished liver lipid peroxidation and increased total glutathione levels. S. cumini peel feeding reduced hepatic collagen, lipid peroxidation, and TNF-α levels while increased catalase activity. Although S. malaccense peel powder, which displayed the lowest anthocyanin levels, decreased oxidative stress, and cytokine levels, no effects were observed on liver fibrosis or preneoplastic lesion outcomes. Findings indicate a protective effect of anthocyanin-rich M. jaboticaba and S. cumini peel powder feeding on preneoplastic lesion development and fibrosis, respectively. Results indicate that differential biological responses may be attributed to distinct anthocyanin profiles and levels, assigning a functional/market value to the underutilized peel fraction.

PRIMARY SPHINCTEROPLASTY COMPARING TWO DIFFERENT STITCHES IN ANAL FISTULA TREATMENT: EXPERIMENTAL STUDY IN RATS.

BACKGROUND: Anal fistula is by definition the communication between the rectum or anal canal with the perineal region, which may be epithelialized and has cryptoglandular origin in 90% of cases. There are a large number of techniques for successfully treating trans-sphincteric fistulas of 20-50%, including primary sphincteroplasty, but it is not clear whether the material used would influence the outcome. AIM: To analyze the efficacy of polydioxanone and polypropylene wire in primary post-fistulotomy sphincteroplasty in the treatment of trans-sphincteric fistulas in rats. METHODS: Thirty Wistar rats had transfixation of the anal sphincter with steel wire, which remained for 30 days for the development of the anal fistula. After this period, it was removed and four groups were formed: A (control) without treatment; B (fistulotomy) submitted to such procedure and curettage only; C (polidioxanone) in which sphincteroplasty was performed after fistulotomy with polydioxanone wire; D (polypropylene) submitted to the same treatment as group C, but with polypropylene wire. After 30 days, euthanasia and removal of the specimens were performed for qualitative histopathological analysis, measurement of the area between the muscular cables edges and evaluation of the degree of local fibrosis. RESULTS: There was persistence of the anal fistula in all animals of group A. There were no significant differences between groups B, C and D regarding the distance of the muscular cables (p=0.078) and the degree of fibrosis caused by the different treatments (p=0.373). CONCLUSIONS: There was no difference between polydioxanone and polypropylene wires in post-fistulotomy primary sphincteroplasty, and this technique was not superior to simple fistulotomy in relation to the distance of the muscular cables nor did it present differences in relation to the degree of local fibrosis.

Characterization of teaching-learning tutors in public health services and topics of interest for their work / Caracterización de los tutores de enseñanza-aprendizaje en los servicios de salud pública y temas de interés para su actuación / Caracterização dos tutores de ensino-aprendizagem em serviços públicos de saúde e temas de interesse para atuação

ABSTRACT Objective: To describe the profile of teaching-learning tutors in public health services and investigate which topics are of greatest interest in development spaces for these actors. Method: Cross-sectional study. Eligible tutors of Health Care Planning. Data collection using an electronic questionnaire composed of closed questions on sociodemographic characteristics, training and performance. Chi-square test used to compare proportions according to tutor typologies. Results: A total of 614 tutors worked in Brazil's five geographic regions, the majority in primary care (82%), followed by state/regional work (13%) and specialized outpatient care (5%). The majority reported being female, of brown skin color, from the nursing field, having worked as a tutor for less than a year, and with no previous experience in preceptorship or similar. The most important topics were Health Care Networks, risk stratification for chronic conditions and the functions of specialized outpatient care. Conclusion: The predominance of certain characteristics among tutors was identified, with differences between the types of work. The findings can support managers in the process of selecting and developing tutors in Health Care Planning.

RESUMEN Objetivo: Describir el perfil de los tutores de enseñanza-aprendizaje de los servicios de salud pública e investigar los temas de mayor interés en espacios de desarrollo de estos actores. Método: Se trata de un estudio transversal con Tutores Elegibles de Planificación de la atención en salud; con datos recopilados mediante cuestionario electrónico de preguntas cerradas sobre características sociodemográficas, formación y actuación. Se utilizó la prueba de Chi-cuadrado para comparar las proporciones según las tipologías del tutor. Resultados: Se consideraron 614 tutores que trabajaban en las cinco regiones geográficas del Brasil, la mayoría en Atención Primaria (82%), seguido de actuación estatal/regional (13%) y Atención Ambulatoria Especializada (5%). La mayoría declaró ser mujer, de piel morena, del ámbito de la enfermería, con menos de un año de actuación como tutora y sin experiencia previa como preceptora o similar. Los temas más importantes fueron las Redes de la Atención en Salud, la estratificación del riesgo de las enfermedades crónicas y el papel de la Atención Ambulatoria Especializada. Conclusión: Se identificó el predominio de ciertas características entre los tutores, distintas según los tipos de actuación. Las conclusiones pueden servir de apoyo a los gestores en el proceso de selección y desarrollo de los tutores en Planificación.

RESUMO Objetivo: Descrever o perfil de tutores de ensino-aprendizagem em serviços públicos de saúde e investigar quais são os temas de maior interesse em espaços de desenvolvimento desses atores. Método: Estudo transversal. Elegíveis tutores da Planificação da Atenção à Saúde. Coleta de dados por questionário eletrônico composto por questões fechadas sobre características sociodemográficas, formação e atuação. Teste Qui-quadrado utilizado para comparar proporções segundo tipologias de tutor. Resultados: Considerados 614 tutores, que atuavam nas cinco regiões geográficas brasileiras, sendo a maioria na Atenção Primária (82%), seguido por atuação estadual/regional (13%) e na Atenção Ambulatorial Especializada (5%). A maioria referiu ser mulher, de cor da pele parda, da área de enfermagem, atuação como tutor há menos de 1 ano, e sem experiência prévia em preceptoria ou similar. Temas considerados mais importantes destacam-se Redes de Atenção à Saúde, estratificação de risco de condições crônicas e funções da Atenção Ambulatorial Especializada. Conclusão: Identificou-se a predominância de algumas características entre tutores, com diferenças entre as tipologias de atuação. Os achados podem apoiar gestores no processo de seleção e desenvolvimento de tutores na Planificação.

Epidemiological and molecular surveillance of norovirus in the Brazilian Amazon: description of recombinant genotypes and improvement of evolutionary analysis

ABSTRACT Noroviruses are highly infectious, genetically diverse viruses. Global outbreaks occur frequently, making molecular surveillance important for infection monitoring. This cross-sectional descriptive study aimed to monitor cases of norovirus gastroenteritis in the Brazilian Amazon. Fecal samples were tested by immunoenzymatic assay, RT-PCR and genetic sequencing for the ORF1/ORF2 and protease regions. Bayesian inference with a molecular clock was employed to construct the phylogeny. The norovirus prevalence was 25.8%, with a higher positivity rate among children aged 0-24 months. Genogroup GII accounted for 98.1% of the sequenced samples, while GI accounted for 1.9% of them. The GII.P16/GII.4 genotype was the most prevalent, with an evolution rate of 2.87x10−3 and TMRCA estimated in 2012. This study demonstrates that norovirus is a primary causative agent of gastroenteritis and provides data on viral genetic diversity that may facilitate infection surveillance and vaccine development.