Understanding desiccation tolerance and sex-specific responses in Bryum argenteum: insights from phenological phases and physiological analyses.

BACKGROUND AND AIMS: Desiccation tolerance (DT) is crucial for survival in arid environments, where organisms develop strategies in reproduction, maintenance, and defense to cope with water scarcity. Therefore, investigating the relationship between reproduction and DT is essential to understand the ecology and adaptive strategies of species. This study explores the connection between the development of male and female gametangia in the moss Bryum argenteum and the decrease in DT during the progression of phenological phases in gametangia and protonema. METHODS: Samples collected from a dry tropical forest in Brazil were cultivated, cloned, and subjected to desiccation. Subsequently, the physiological parameters of shoots and protonemata were analysed. Shoot and protonema regeneration were monitored for 28 days after the physiological analyses. Both phases were subjected to control and desiccation treatments. KEY RESULTS: Significant effects of desiccation and sex on the physiological parameters and regeneration capacity of shoots and protonemata were found. Male shoots generally exhibited lower values in Fv/Fm, and ϕPSII, while females demonstrated higher values and better recovery after desiccation. Protonemata also showed variation in Fv/Fm over time and sex, with no significant differences in ϕPSII between them. Desiccated male shoots had higher mortality rates and produced fewer new shoots. Regarding the females, the regeneration patterns varied between the desiccation-exposed groups and the control, with decreased shoot production, and some protonemata growing into filaments without forming shoots. CONCLUSION: These findings improve our understanding of bryophytes ecological responses to desiccation stress and provide insights into their adaptive strategies in challenging environments, such as the possible rarity of males in dioicous mosses populations.

Neuroprotective effects of chlorogenic acid against oxidative stress in rats subjected to lithium-pilocarpine-induced status epilepticus.

Epilepsy is a condition marked by sudden, self-sustained, and recurring brain events, showcasing unique electro-clinical and neuropathological phenomena that can alter the structure and functioning of the brain, resulting in diverse manifestations. Antiepileptic drugs (AEDs) can be very effective in 30% of patients in controlling seizures. Several factors contribute to this: drug resistance, individual variability, side effects, complexity of epilepsy, incomplete understanding, comorbidities, drug interactions, and no adherence to treatment. Therefore, research into new AEDs is important for several reasons such as improved efficacy, reduced side effects, expanded treatment options, treatment for drug-resistant epilepsy, improved safety profiles, targeted therapies, and innovation and progress. Animal models serve as crucial biological tools for comprehending neuronal damage and aiding in the discovery of more effective new AEDs. The utilization of antioxidant agents that act on the central nervous system may serve as a supplementary approach in the secondary prevention of epilepsy, both in laboratory animals and potentially in humans. Chlorogenic acid (CGA) is a significant compound, widely prevalent in numerous medicinal and food plants, exhibiting an extensive spectrum of biological activities such as neuroprotection, antioxidant, anti-inflammatory, and analgesic effects, among others. In this research, we assessed the neuroprotective effects of commercially available CGA in Wistar rats submitted to lithium-pilocarpine-induced status epilepticus (SE) model. After 72-h induction of SE, rats received thiopental and were treated for three consecutive days (1st, 2nd, and 3rd doses). Next, brains were collected and studied histologically for viable cells in the hippocampus with staining for cresyl-violet (Nissl staining) and for degenerating cells with Fluoro-Jade C (FJC) staining. Moreover, to evaluate oxidative stress, the presence of malondialdehyde (MDA) and superoxide dismutase (SOD) was quantified. Rats administered with CGA (30 mg/kg) demonstrated a significant decrease of 59% in the number of hippocampal cell loss in the CA3, and of 48% in the hilus layers after SE. A significant reduction of 75% in the cell loss in the CA3, shown by FJC+ staining, was also observed with the administration of CGA (30 mg/kg). Furthermore, significant decreases of 49% in MDA production and 72% in the activity of SOD were seen, when compared to animals subjected to SE that received vehicle. This study introduces a novel finding: the administration of CGA at a dosage of 30 mg/kg effectively reduced oxidative stress induced by lithium-pilocarpine, with its effects lasting until the peak of neural damage 72 h following the onset of SE. Overall, the research and development of new AEDs are essential for advancing epilepsy treatment, improving patient outcomes, and ultimately enhancing the quality of life for individuals living with epilepsy.

GABAergic and glutamatergic inputs to the medulla oblongata and locus coeruleus noradrenergic pathways are critical for seizures and postictal antinociception neuromodulation.

We investigated the participation of the nucleus of the tractus solitarius (NTS) in tonic‒clonic seizures and postictal antinociception control mediated by NMDA receptors, the role of NTS GABAergic interneurons and noradrenergic pathways from the locus coeruleus (LC) in these phenomena. The NTS-lateral nucleus reticularis paragigantocellularis (lPGi)-LC pathway was studied by evaluating neural tract tracer deposits in the lPGi. NMDA and GABAergic receptors agonists and antagonists were microinjected into the NTS, followed by pharmacologically induced seizures. The effects of LC neurotoxic lesions caused by DSP-4, followed by NTS-NMDA receptor activation, on both tonic‒clonic seizures and postictal antinociception were also investigated. The NTS is connected to lPGi neurons that send outputs to the LC. Glutamatergic vesicles were found on dendrites and perikarya of GABAergic interneurons in the NTS. Both tonic‒clonic seizures and postictal antinociception are partially dependent on glutamatergic-mediated neurotransmission in the NTS of seizing rats in addition to the integrity of the noradrenergic system since NMDA receptor blockade in the NTS and intrathecal administration of DSP-4 decrease the postictal antinociception. The GABAA receptor activation in the NTS decreases both seizure severity and postictal antinociception. These findings suggest that glutamatergic inputs to NTS-GABAergic interneurons, in addition to ascending and descending noradrenergic pathways from the LC, are critical for the control of both seizures and postictal antinociception.

HPV immunization in Brazil and proposals to increase adherence to vaccination campaigns.

OBJECTIVES: To identify the possible causes of low adherence to vaccination campaigns in Brazil, find and analyze campaigns regarding human papillomavirus (HPV) in Brazil and abroad, and apply quality tools to prepare proposals to increase vaccination coverage (VC) and prevent HPV in the country. METHOD: This is a qualitative and deductive-hypothetical research. A narrative review of the literature (especially on the narratives and formats applied in vaccination campaigns in Brazil) was the technique used to develop our method. RESULTS: Brazil had a 49.6% VC in 2019, unlike countries such as Australia (80.2% in 2017), Mexico (97.5% in 2019), and Peru (91% in 2019). This study found evidence of the use of social marketing strategies to engage communities as good practices in the vaccination campaigns of these countries. CONCLUSION: With the retrieved information, three quality tools (Ishikawa diagram, Pareto graph, and 5W2H) classified and quantified the causes of low VC in Brazil and enabled proposals that can direct its Ministry of Health to take more effective strategies to achieve the HPV VC goal recommended by the WHO.

Diagnostic Potential for the Detection of Canine Visceral Leishmaniasis of an ELISA Assay Based on the Q5 Recombinant Protein: A Large-Scale and Comparative Evaluation Using Canine Sera with a Positive Diagnosis from the Dual-Path-Platform (DPP) Test.

Dogs are considered the major domestic reservoir for human visceral leishmaniasis, a serious disease caused by the Leishmania infantum parasite. Diagnosis of canine visceral leishmaniasis (CVL) is critical for disease control, with several methods currently available. Among the serological tests, the DPP rapid test and the EIE-LVC, more commonly used in Brazil, are associated with variable sensitivity and specificity. Research with novel recombinant proteins such as the ELISA with the recombinant chimeric protein Q5 may therefore improve the CVL diagnosis. This study aimed to evaluate the true diagnostic potential of Q5 in an ELISA assay using a large number of CVL-suspected sera (406) with a previous positive diagnosis based on the rapid DPP test. Sera from the DPP-positive dogs, also assessed with the EIE-LVC test, were compared with sera from healthy dogs (n = 46) and used for ELISA tests using the recombinant Q5. The resulting data as well as the correlation with the clinical signs and the environmental characteristics of the animals were analyzed using Medal and GraphPad Prism 8.0. Overall, similar levels of lower sensitivity (67-68%) were seen for both the commercial EIE-LVC test and the Q5 ELISA when all assessed sera were considered, but a much greater sensitivity (92%) was seen for those samples from symptomatic dogs only. In contrast, many negative results were observed for the DPP-positive sera from asymptomatic dogs or those with no clinical information available. A selection of those sera were tested yet again in new ELISA assays using a second batch of the recombinant Q5, purified under milder denaturing conditions, as well as using another recombinant protein (Lci13). The results reveal a higher-than-expected incidence of likely false-positive results for DPP, reinforcing the need for other recombinant proteins, such as the chimeric Q5, to be investigated as possible alternatives to the currently used CVL diagnostic methods.

Screening for canine coronavirus, canine influenza virus, and severe acute respiratory syndrome coronavirus 2 in dogs during the coronavirus disease-2019 pandemic.

Background and Aim: Although most cases of coronavirus disease-2019 (COVID-19) are in humans, there is scientific evidence to suggest that the virus can also infect dogs and cats. This study investigated the circulation of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), canine coronavirus (CCV), and canine influenza virus (CIV) in domiciled and/or stray dogs from different locations in the State of Minas Gerais, Brazil, during the COVID-19 pandemic. Materials and Methods: In total, 86 dogs living in homes, on the streets, or in shelters in the cities of Taiobeiras, Salinas, Araçuaí, and Almenara were randomly selected for this study. The COVID Ag Detect® Self-Test was used to detect SARS-CoV-2. The ACCUVET CCV AG TEST - CANINE CORONAVIROSIS® was used to detect CCV, whereas canine influenza was detected using the ACCUVET CIV AG TEST - INFLUENZA CANINA®. All collected data were mapped using QGIS 3.28.1 for spatial data analysis and the identification of disease distribution patterns. Descriptive analysis of the collected data, prevalence calculations, odds ratios (ORs), and 95% confidence intervals, when possible, was performed. Results: Of the 86 animals tested, only one dog tested positive for SARS-CoV-2 using the rapid test for viral antigen detection. No animals tested positive for CIV. Canine coronavirus was detected in almost half of the animals tested in Almenara. Severe acute respiratory syndrome-CoV-2 had a low prevalence (1.16%), versus 15.62% for CCV. Although the results were not significant, the age and breed of animals appeared to be associated with the occurrence of CCV. The results indicated that younger animals were 2.375-fold more likely to be infected. Likewise, purebred animals were more likely to contract the disease (OR = 1.944). Conclusion: The results indicate the need to maintain preventive measures against CCV, canine influenza, and SARS-CoV-2 in dogs. More studies are needed to better elucidate the panorama of these diseases in dogs, mainly in underdeveloped and developing countries.

Antinociceptive Effect of a p-Cymene/ß-Cyclodextrin Inclusion Complex in a Murine Cancer Pain Model: Characterization Aided through a Docking Study.

Pain is one of the most prevalent and difficult to manage symptoms in cancer patients, and conventional drugs present a range of adverse reactions. The development of ß-cyclodextrins (ß-CD) complexes has been used to avoid physicochemical and pharmacological limitations due to the lipophilicity of compounds such as p-Cymene (PC), a monoterpene with antinociceptive effects. Our aim was to obtain, characterize, and measure the effect of the complex of p-cymene and ß-cyclodextrin (PC/ß-CD) in a cancer pain model. Initially, molecular docking was performed to predict the viability of complex formation. Afterward, PC/ß-CD was obtained by slurry complexation, characterized by HPLC and NMR. Finally, PC/ß-CD was tested in a Sarcoma 180 (S180)-induced pain model. Molecular docking indicated that the occurrence of interaction between PC and ß-CD is favorable. PC/ß-CD showed complexation efficiency of 82.61%, and NMR demonstrated PC complexation in the ß-CD cavity. In the S180 cancer pain model, PC/ß-CD significantly reduced the mechanical hyperalgesia, spontaneous nociception, and nociception induced by non-noxious palpation at the doses tested (p < 0.05) when compared to vehicle differently from free PC (p > 0.05). Therefore, the complexation of PC in ß-CD was shown to improve the pharmacological effect of the drug as well as reducing the required dose.

Acanthoscurria gomesiana spider-derived Mygalin in the prelimbic prefrontal cortex modulates neuropathic pain and depression comorbid.

Depression has a high rate of comorbidity with neuropathic pain. This study aims to investigate the effect of Mygalin, an acylpolyamine synthesized from a natural molecule in the hemolymph of the Acanthoscurria gomesiana spider, injected into the prelimbic (PrL) region of the medial prefrontal cortex on chronic neuropathic pain and depression comorbidity in rats. To investigate that comorbidity, neuropathic pain was induced by chronic constriction injury (CCI) of the sciatic nerve in male Wistar rats. The biotinylated biodextran amine (BDA) bidirectional neural tract tracer was microinjected into the PrL cortex to study brain connections. Rodents were further subjected to von Frey (mechanical allodynia), acetone (cold allodynia), and forced swim (depressive-like behavior) tests. BDA neural tract tracer-labeled perikarya were found in the dorsal columns of the periaqueductal gray matter (dPAG) and the dorsal raphe nucleus (DRN). Neuronal activity of DRN neurons decreased in CCI rats. However, PrL cortex treatment with Mygalin increased the number of spikes on DRN neurons. Mygalin treatment in the PrL cortex decreased both mechanical and cold allodynia and immobility behavior in CCI rats. PrL cortex treatment with N-methyl-D-aspartate (NMDA) receptor receptors attenuated the analgesic and antidepressive effects caused by Mygalin. The PrL cortex is connected with the dPAG and DRN, and Mygalin administration into the PrL increased the activity of DRN neurons. Mygalin in the PrL cortex produced antinociceptive and antidepressive-like effects, and the NMDA agonist reversed these effects.

The spatial arrangement of sexes is related to reproductive allocation in mosses: a comparative study of reproductive allocation in three different monoicous sexual systems.

BACKGROUND AND AIMS: We examined the relationship between reproductive allocation and vegetative growth in three monoicous sexual systems of bryophytes. The sexual systems show a gradient of increasing distance between the sexes, from gonioautoicous to cladautoicous to rhizautoicous. Here, we investigated the following two hypotheses: (1) reproductive allocation differs between sexes and sexual systems, and male reproductive allocation increases with increasing distance between male and female gametangia; and (2) reproductive allocation is negatively related to vegetative growth. METHODS: We sampled the three sexual systems, represented by three moss species of the genus Fissidens in the Atlantic Forest of Southeastern Brazil. Ramets were washed in the laboratory; the reproductive structures were detached from the vegetative ramets and sorted regarding sex and individual, dried at 70 °C for 72 h, and weighed in an ultramicrobalance. We calculated the mean reproductive and vegetative mass and reproductive allocation and used generalized linear models to test our predictions. KEY RESULTS: Reproductive allocation differed between species and sexes. It was higher in the rhizautoicous than in the cladautoicous and gonioautoicous species. Mean reproductive allocation was greater in males than in females of the rhizautoicous species, greater in females than males of the cladautoicous species, and did not differ between the sexes in the gonioautoicous species. Estimates of reproductive and vegetative mass were positively related in females of the rhizautoicous species. Vegetative mass was not related to reproductive allocation in the gonioautoicous species, but negatively related to reproductive allocation in the male and female branchlets of the cladautoicous species and in the female ramets of the rhizautoicous species. CONCLUSIONS: The reproductive allocation patterns differ between the rhizautoicous species and the 'truly' monoicous species, with shorter intersexual distances, which implies that our hypotheses were supported only in part. We suggest that the hypotheses should be reformulated and tested further by comparing 'truly' monoicous species with dioicous species and by including other genera.

Lessons from the invasion front: Integration of research and management of the lionfish invasion in Brazil.

After successful invasions in the Caribbean and Mediterranean, lionfish (Pterois spp.) have recently invaded another important biogeographical region -the Brazilian Province. In this article, we discuss this new invasion, focusing on a roadmap for urgent mitigation of the problem, as well as focused research and management strategies. The invasion in Brazil is already in the consolidation stage, with 352 individuals recorded so far (2020-2023) along 2766 km of coastline. This includes both juveniles and adults, including egg-bearing females, ranging in length from 9.1 to 38.5 cm. Until now, most of the records in the Brazilian coast occurred in the equatorial southwestern Atlantic (99%), mainly on the Amazon mesophotic reefs (15% of the records), northeastern coast of Brazil (45%), and the Fernando de Noronha Archipelago (41%; an UNESCO World Heritage Site with high endemism rate). These records cover a broad depth range (1-110 m depth), twelve protected areas, eight Brazilian states (Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, and Pernambuco) and multiple habitats (i.e., mangrove estuaries, shallow-water and mesophotic reefs, seagrass beds, artificial reefs, and sandbanks), indicating a rapid and successful invasion process in Brazilian waters. In addition, the lack of local knowledge of rare and/or cryptic native species that are potentially vulnerable to lionfish predation raises concerns regarding the potential overlooked ecological impacts. Thus, we call for an urgent integrated approach with multiple stakeholders and solution-based ecological research, real-time inventories, update of environmental and fishery legislation, participatory monitoring supported by citizen science, and a national and unified plan aimed at decreasing the impact of lionfish invasion. The experience acquired by understanding the invasion process in the Caribbean and Mediterranean will help to establish and prioritize goals for Brazil.

A new class of peptides from wasp venom: a pathway to antiepileptic/neuroprotective drugs.

The ability of venom-derived peptides to disrupt physiological processes in mammals provides an exciting source for pharmacological development. Our research group has identified a new class of neuroactive peptides from the venom of a Brazilian social wasp, Polybia occidentalis, with the potential pharmacological profile to treat epilepsies. The study was divided into five phases: Phase 1 concerned the extraction, isolation and purification of Occidentalin-1202(n) from the crude venom, followed by the synthesis of an identical analogue peptide, named Occidentalin-1202(s). In Phase 2, we described the effects of both peptides in two acute models of epilepsy-kainic acid and pentylenetetrazole-induced model of seizures-and measured estimated ED50 and therapeutic index values, electroencephalographic studies and C-fos evaluation. Phase 3 was a compilation of advanced tests performed with Occidentalin-1202(s) only, reporting histopathological features and its performance in the pilocarpine-induced status epilepticus. After the determination of the antiepileptic activity of Occidentalin-1202(s), Phase 4 consisted of evaluating its potential adverse effects, after chronic administration, on motor coordination (Rotarod) and cognitive impairment (Morris water maze) tests. Finally, in Phase 5, we proposed a mechanism of action using computational models with kainate receptors. The new peptide was able to cross the blood-brain barrier and showed potent antiseizure effects in acute (kainic acid and pentylenetetrazole) and chronic (temporal lobe epilepsy model induced by pilocarpine) models. Motor and cognitive behaviour were not adversely affected, and a potential neuroprotective effect was observed. Occidentalin-1202 can be a potent blocker of the kainate receptor, as assessed by computational analysis, preventing glutamate and kainic acid from binding to the receptor's active site. Occidentalin-1202 is a peptide with promising applicability to treat epilepsy and can be considered an interesting drug model for the development of new medicines.

Life-history traits and density dependence in metapopulations of a tropical moss: a monoicous species that is almost dioicous.

Life-history traits, such as reproductive allocation, sexual expression, sex ratio, and reproductive success, are central aspects of a species' ecology and evolution. For example, bias in male and female sex expression may play a large role in determining the viability of populations in the face of environmental pressures, such as population fragmentation, climate change and habitat occupancy. Thus, in this study, we investigated reproductive traits in 10 meta-populations of Fissidens flaccidus Mitt. From each meta-population, 30 patches were randomly selected, and 1 cm2 samples were collected form each patch. A total of 20,173 ramets were analyzed and classified into male, non-sporophytic female, sporophytic female, and non-sex expressing. In addition, population density in each patch was quantified. Our results showed that relative reproductive allocation in perigonia and sporophytes is greater than perichaetia. Trade-off between sexual relative reproductive allocation and asexual gemma production was observed, suggesting an important role of female ramets in asexual reproduction. The number of male ramets does not influence the reproductive success observed in each patch, and ramet density may induce male sex expression. Thus, we concluded that reproductive allocation in male function is efficient, since fewer male ramets can assure a considerable reproductive success. Furthermore, our results suggest that there may be a habitat preference between the sexes, since male ramets are found in patches with high density and mostly below female ramets, suggesting an avoidance of direct sunlight by male ramets.

Neuroprotective Properties of Chlorogenic Acid and 4,5-Caffeoylquinic Acid from Brazilian arnica (Lychnophora ericoides) after Acute Retinal Ischemia.

Lychnophora is a genus of South American flowering plants in the daisy family, popularly known as "Brazilian arnica". It is used in traditional medicine as an anti-inflammatory and analgesic agent, whose active components are derived from chlorogenic acid (CGA) and C-flavonoids. Since the drugs currently used are ineffective to treat glaucoma, agents with antioxidant and anti-inflammatory properties may represent new alternatives in preventing cellular lesions in retinal ischemia. In this study, we report the neuroprotective effects of CGA and 4,5-di-O-[E]-caffeoylquinic (CQA) acid, isolated from Lychnophora plants, in a rodent glaucoma model. Wistar rats were administered intravitreally with 10 µg CGA or CGA, and then subjected to acute retinal ischemia (ISC) by increasing intraocular pressure (IPO) for 45 minutes followed (or not) by 15 minutes of reperfusion (I/R). Qualitative and quantitative analyses of neurodegeneration were performed using hematoxylin-eosin or Fluoro-Jade C staining protocols. All retinas submitted to ISC or I/R exhibited matrix disorganization, pyknotic nuclei, and pronounced vacuolization of the cytoplasm in the ganglion cell layer (GCL) and inner nuclear layer (INL). Pretreatment with CGA or CQA resulted in the protection of the retinal layers against matrix disorganization and a reduction in the number of vacuolized cells and pyknotic nuclei. Also, pretreatment with CGA or CQA resulted in a significant reduction in neuronal death in the GCL, the INL, and the outer nuclear layer (ONL) after ischemic insult. Our study demonstrated that CGA and CQA exhibit neuroprotective activities in retinas subjected to ISC and I/R induced by IPO in Wistar rats.

Acanthoscurria gomesiana spider-derived Mygalin in the prelimbic prefrontal cortex modulates neuropathic pain and depression comorbid

Depression has a high rate of comorbidity with neuropathic pain. This study aims to investigate the effect of Mygalin, an acylpolyamine synthesized from a natural molecule in the hemolymph of the Acanthoscurria gomesiana spider, injected into the prelimbic (PrL) region of the medial prefrontal cortex on chronic neuropathic pain and depression comorbidity in rats. To investigate that comorbidity, neuropathic pain was induced by chronic constriction injury (CCI) of the sciatic nerve in male Wistar rats. The biotinylated biodextran amine (BDA) bidirectional neural tract tracer was microinjected into the PrL cortex to study brain connections. Rodents were further subjected to von Frey (mechanical allodynia), acetone (cold allodynia), and forced swim (depressive-like behavior) tests. BDA neural tract tracer-labeled perikarya were found in the dorsal columns of the periaqueductal gray matter (dPAG) and the dorsal raphe nucleus (DRN). Neuronal activity of DRN neurons decreased in CCI rats. However, PrL cortex treatment with Mygalin increased the number of spikes on DRN neurons. Mygalin treatment in the PrL cortex decreased both mechanical and cold allodynia and immobility behavior in CCI rats. PrL cortex treatment with N-methyl-D-aspartate (NMDA) receptor receptors attenuated the analgesic and antidepressive effects caused by Mygalin. The PrL cortex is connected with the dPAG and DRN, and Mygalin administration into the PrL increased the activity of DRN neurons. Mygalin in the PrL cortex produced antinociceptive and antidepressive-like effects, and the NMDA agonist reversed these effects.

HPV immunization in Brazil and proposals to increase adherence to vaccination campaigns / Imunização do HPV no Brasil e propostas para aumento da adesão à campanha de vacinação

ABSTRACT OBJECTIVES To identify the possible causes of low adherence to vaccination campaigns in Brazil, find and analyze campaigns regarding human papillomavirus (HPV) in Brazil and abroad, and apply quality tools to prepare proposals to increase vaccination coverage (VC) and prevent HPV in the country. METHOD This is a qualitative and deductive-hypothetical research. A narrative review of the literature (especially on the narratives and formats applied in vaccination campaigns in Brazil) was the technique used to develop our method. RESULTS Brazil had a 49.6% VC in 2019, unlike countries such as Australia (80.2% in 2017), Mexico (97.5% in 2019), and Peru (91% in 2019). This study found evidence of the use of social marketing strategies to engage communities as good practices in the vaccination campaigns of these countries. CONCLUSION With the retrieved information, three quality tools (Ishikawa diagram, Pareto graph, and 5W2H) classified and quantified the causes of low VC in Brazil and enabled proposals that can direct its Ministry of Health to take more effective strategies to achieve the HPV VC goal recommended by the WHO.

RESUMO OBJETIVOS Identificar as possíveis causas da baixa adesão à campanha de vacinação no Brasil, identificar e analisar as campanhas relacionadas ao papilomavírus humano (HPV) no Brasil e em outras regiões do mundo, e aplicar ferramentas de qualidade para elaboração de propostas para aumento da cobertura vacinal (CV) para prevenção do HPV no país. MÉTODO Pesquisa de natureza qualitativa e dedutiva-hipotética. A técnica utilizada para o desenvolvimento do método é a revisão narrativa da literatura, em particular estudando as narrativas e formatos aplicados nas campanhas de vacinação no Brasil. RESULTADOS Identificou-se que, em 2019, a CV no Brasil foi de 49,6%, diferentemente de países como Austrália (80,2% em 2017), México (97,5% em 2019) e Peru (91% em 2019). Evidências do uso de estratégias de marketing social para engajamento comunitário foram encontradas nas campanhas de vacinação utilizadas como boas práticas nesses países. CONCLUSÃO Com as informações encontradas foram aplicadas três ferramentas de qualidade (diagrama de Ishikawa, gráfico de Pareto e 5W2H) que classificaram e quantificaram as causas da baixa CV no Brasil e, com isso, viabilizaram propostas que podem direcionar o MS à tomada de estratégias mais eficazes para atingimento da meta de CV do HPV recomendada pela OMS.

Série de caso de tumores cardíacos na infância e correlação ecocardiográfica / Case series of cardiac tumors in childhood and echocardiographic correlation

INTRODUÇÃO E/OU FUNDAMENTOS: Os tumores cardíacos (TC) são raros em todas as idades. A grande maioria dos TC primários na faixa etária pediátrica são benignos, entre eles, rabdomiomas, fibromas e mixomas são os mais prevalentes. A seguir, descreveremos uma série de casos de TIC em crianças, destacando suas características clínicas e ecocardiográficas. RELATO DO CASO: CASO 1 Criança, feminino, 5 meses, encaminhada para investigação devido histórico familiar esclerose tuberosa. Sem intercorrências no período neonatal, assintomática, sem arritmias visualizadas em eletrocardiograma (ECG). Em investigação ecocardiográfica evidenciado, massa hiperrefringente, homogênea, no ventrículo direito (VD) medindo 15x10mm, e outras 2 imagens arredondas no interior do ventrículo esquerdo (VE) de 4.5x3.4mm e 7x3mm, sem gerar obstruções, sugestivas de rabdomioma. CASO 2 Criança, feminino, 1 ano, encaminhada devido histórico de sopro cardíaco ao nascimento, sem sinais de cianose ou baixo débito, realizado ecocardiograma (ECO) na maternidade que evidenciou TC único. Apresenta dispneia ao choro intenso e desvio extremo do eixo do QRS. Em investigação ecocardiográfica atual, evidenciado massa única de 48x54mm, aderida ao septo interventricular com centro calcificado e sem vascularização gerando obstrução dinâmica a via de saída de VD; sugestivo de fibroelastoma obstrutivo. CASO 3 Criança, masculino, 5 anos, em seguimento desde o 1 mês, devido imagem sugestiva de rabdomioma em ECO fetal. Assintomático, apresentando distúrbio de condução de ramo direito. Em evolução ecocardiográfica foram evidenciadas 3 imagens ecogênicas: no anel da vala tricúspide, séssil, medindo cerca de 7x6mm, no ápice do VE de 12x10 mm e no ápice de VD de 5x3mm, não obstrutivas, sugestivas de rabdomioma; com regressão posterior. CASO 4 Criança, masculino,12 anos, em seguimento devido TC. Realizou biopsia com 1 ano, confirmando diagnóstico de neurofibroma. Assintomático, com extrassístoles ventriculares no ECG e arritmia extrassistólica ventricular polimórfica frequente no holter. Evidenciado no ECO, massa intramural no VE com áreas de calcificação, sem causar obstrução, com aumento progressivo, atualmente medindo 68x36mm. Conclusões: O ECO é o exame mais utilizado no diagnóstico inicial dos TC, visto que possui grande acessibilidade, baixo custo e não é invasivo. Características como o número de TC, tamanho, localização, presença de vascularização ou calcificações são de extrema importância na diferenciação dos tipos de tumores, contribuindo para o diagnóstico e tratamento precoces.

Antinociceptive effect of plant-based natural products in chemotherapy-induced peripheral neuropathies: A systematic review.

Chemotherapy-induced peripheral neuropathy (CIPN) is one of the most prevalent and difficult-to-treat symptoms in cancer patients. For this reason, the explore for unused helpful choices able of filling these impediments is essential. Natural products from plants stand out as a valuable source of therapeutic agents, being options for the treatment of this growing public health problem. Therefore, the objective of this study was to report the effects of natural products from plants and the mechanisms of action involved in the reduction of neuropathy caused by chemotherapy. The search was performed in PubMed, Scopus and Web of Science in March/2021. Two reviewers independently selected the articles and extracted data on characteristics, methods, study results and methodological quality (SYRCLE). Twenty-two studies were selected, describing the potential effect of 22 different phytochemicals in the treatment of CIPN, with emphasis on terpenes, flavonoids and alkaloids. The effect of these compounds was demonstrated in different experimental protocols, with several action targets being proposed, such as modulation of inflammatory mediators and reduction of oxidative stress. The studies demonstrated a predominance of the risk of uncertain bias for randomization, baseline characteristics and concealment of the experimental groups. Our findings suggest a potential antinociceptive effect of natural products from plants on CIPN, probably acting in several places of action, being strategic for the development of new therapeutic options for this multifactorial condition.

The cone procedure to ebstein's anomaly repair: clinical and echocardiographic outcomes

INTRODUCTION: Ebstein's anomaly occurs due to failure in the delamination of the septal and posterior leaflets with apical displacement of the functional annulus, dilatation of the atrialized portion of the right ventricle, thinning of the free wall, dilatation of the true annulus and redundant anterior leaflet with multiple fenestrations. The "Cone" reconstruction of the tricuspid valve, described by Silva et al, results in complete coaptation of the valves with excellent results in the medium and long term. OBJECTIVES: In this study, clinical and echocardiographic data of patients undergoing surgical repair using this technique was reviewed. METHODS: Pre and post-operative (PO) records and echocardiograms of 8 patients operated on from 2018 to 2022 were reviewed. RESULTS: The median age of the group was 22.5 (2 to 42 years). In the pre-operative 3 patients had Wolf-Parkinson-White ventricular pre-excitation and 6 had atrial septal defect associated, 6 had moderate to severe dyspenia, with only one being cyanotic. All had severe tricuspid regurgitation (TI) and 6 had moderate to severe right ventricular dilatation. In the immediate PO, moderate TI was detected in 2 and mild in 6. In 1 patient, Glenn anastomosis was added to the Cone procedure due to hemodynamic instability and hypoxemia immediately after bypass. In the post-operative follow-up time, median of 11.5 months, all patients were asymptomatic and TI increased from mild to moderate in only one case. One patient required pacemaker implantation due to complete atrioventricular block. CONCLUSION: In this small cohort, the Cone procedure resulted in significant improvement of the tricuspid regurgitation, no mortality and low morbidity with significant improvement of the clinical status.

SUBJECTS, KNOWLEDGE AND DIDACTIC-PEDAGOGIC PRACTICES IN PHYSICAL EDUCATION IN/WITH/THE DAILY OF HIGH SCHOOL / SUJETOS, CONOCIMIENTOS Y PRÁCTICAS DIDÁCTICO-PEDAGÓGICAS EN EDUCACIÓN FÍSICA EN/CON/EL COTIDIANO DE LA ESCUELA SECUNDARIA / SUJEITOS, SABERES E PRÁTICAS DIDÁTICO-PEDAGÓGICAS EM EDUCAÇÃO FÍSICA NO/COM/O COTIDIANO DO ENSINO MÉDIO

This study is organized around the following question: what are the possible pedagogical didactic textures that can be undertaken in physical education in/with/with the daily life of high school, from (re)appropriation of curricular structures? It aims to analyze how the articulation between curricular signs can materialize as didactic-pedagogical actions in the daily life of high school. In order to do so, an ethnographic case study of daily school life was carried out with the principles of existential action research. In other words, the context of tensions, changes and reorganizations in which Brazilian secondary education is presented and its impacts on Physical Education constitute a fertile field for this type of methodological option. From this perspective, it became part of the daily life of a full-time school in the state network of Capixaba, founded in 1977. In this way, during approximately 700 Physical Education classes, which involved direct action with a teacher of the curricular component, ten classes of 1st to 3rd year and about 400 students, we sought to give visibility to the knowledge/doings mobilized in the spaces/times of this daily life. The results indicate educational actions in Physical Education that respect the particularities of daily school life. Therefore, what is being proposed represents a response to general events arising from national educational policies, but also represents responses to the problems and dilemmas typical of the daily life of the researched school.

Este estudio se organiza en torno a la siguiente pregunta: ¿cuáles son las posibles texturas didácticas pedagógicas que se pueden emprender en la educación física en/con/con el cotidiano de la escuela secundaria, a partir de la (re)apropiación de las estructuras curriculares? Tiene como objetivo analizar cómo la articulación entre signos curriculares puede materializarse como acciones didáctico-pedagógicas en el cotidiano de la escuela secundaria. Para ello, se realizó un estudio de caso etnográfico de la cotidianidad escolar con los principios de la investigación acción existencial. En otras palabras, el contexto de tensiones, cambios y reorganizaciones en que se presenta la educación secundaria brasileña y sus impactos en la Educación Física constituyen un campo fértil para este tipo de opción metodológica. Desde esa perspectiva, pasó a formar parte del cotidiano de una escuela de tiempo completo de la red estatal de Capixaba, fundada en 1977. De esta forma, durante aproximadamente 700 clases de Educación Física, que implicó la acción directa con un docente del componente curricular , diez clases de 1° a 3° año y cerca de 400 alumnos, buscamos dar visibilidad a los saberes/haceres movilizados en los espacios/tiempos de esta cotidianidad. Los resultados indican acciones educativas en Educación Física que respetan las particularidades del cotidiano escolar. Por tanto, lo que se propone representa una respuesta a los acontecimientos generales derivados de las políticas educativas nacionales, pero también representa respuestas a los problemas y dilemas inherentes al cotidiano de la escuela investigada

Este estudo organiza-se em torno da seguinte questão: quais as tessituras didático pedagógicas possíveis de serem empreendidas em educação física no/com/o cotidiano do ensino médio, a partir de (re) apropriações sobre as estruturas curriculares? Objetiva analisar como a articulação entres signos curriculares podem materializar-se como ações didático pedagógicas no cotidiano do ensino médio. Para tanto, realizou-se um estudo de caso etnográfico do cotidiano escolar com princípios da pesquisa ação existencial. Em outras palavras, o contexto de tensões, mudanças e reorganizações no qual o ensino médio brasileiro se apresenta e seus impactos na Educação Física constituem-se como campo fértil para esse tipo de opção metodológica. Nessa perspectiva, passou-se a integrar o cotidiano de uma escola de tempo integral da rede estadual Capixaba, fundada em 1977. Desse modo, durante aproximadamente 700 aulas de Educação Física, que envolveram ação direta com uma professora do componente curricular, dez turmas de 1º ao 3º ano e cerca de 400 alunos, buscou-se dar visibilidade aos saberes/fazeres mobilizados nos espaços/tempos desse cotidiano. Os resultados sinalizam ações educacionais em Educação Física que respeitem as particularidades próprias dos cotidianos escolares praticados. Sendo assim, o que está sendo proposto representa uma resposta aos acontecimentos gerais advindos das políticas educacionais nacionais, mas representam também respostas aos problemas e dilemas próprios do cotidiano da escola pesquisada.

Selective cytotoxicity of ent-kaurene diterpenoids isolated from Baccharis lateralis and Baccharis retusa (Asteraceae).

This study presents the cytotoxic activity evaluation of the natural diterpenes ent-kaurenoic acid (1) and its 15ß-hydroxy (2), 15ß-senecioyloxy (3), and 15ß-tiglinoyloxy (4) derivatives, isolated from Brazilian native plants, Baccharis retusa and B. lateralis (Asteraceae). Using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) colorimetric assay, it was observed that compound 1 displayed in vitro activity towards the aggressive MDA-MB-231 adenocarcinoma cell line and reduced toxicity against MCF-10A nontumorigenic epithelial cells, indicating expressive selectivity. On the contrary, compounds 2-4 exhibited reduced toxicity and selectivity in both tested cell lines. Based on the chemical structures of compounds 1-4, it is suggested that the presence of additional functional groups at the C-15 position-a hydroxyl group in compound 2 and isomeric isoprene units in compounds 3 and 4-might be responsible for the reduction in the potential/selectivity. In silico studies show, for compounds 1-4, good predictions regarding bioavailability and ADME (absorption, distribution, metabolism, and excretion) properties as well as no alerts for PAINS (pan-assay structures interference). In conclusion, ent-kaurenoic acid (1), a common diterpenoid isolated in high amounts from different plants belonging to the Baccharis genus, has been shown to be a promising cytotoxic agent against an aggressive adenocarcinoma cell line (MDA-MB-23) and, if well exploited, could be used as a scaffold in the development of molecular prototypes for the treatment of breast cancer.