Electroconvulsive therapy (ECT) has multiple uses in psychiatry, but its mechanisms of action (MA) in patients with schizophrenia (PS) are poorly understood. We synthesize and discuss the available evidence in this regard. We conducted a search for primary human studies and systematic reviews searching MA of ECT in PS published in PubMed/Medline, SciELO, PsycInfo, and the Cochrane Library, including 24 articles. Genetic findings are scarce and inconsistent. At the molecular level, the dopaminergic and GABAergic role stands out. The increase in brain derived neurotrophic factor (BDNF) after ECT, is a predictor of positive clinical outcomes, while the change in N-acetyl aspartate levels would demonstrate a neuroprotective role for ECT. This intervention would improve inflammatory and oxidative parameters, thereby resulting in a symptomatic improvement. ECT is associated with an increase in functional connectivity in the thalamus, right putamen, prefrontal cortex and left precuneus, structures that play a role in the neural default mode network. A decrease in connectivity between the thalamus and the sensory cortex and an enhanced functional connectivity of the right thalamus to right putamen along with a clinical improvement have been reported after ECT. Moreover a volumetric increase in hippocampus and insula has been reported after ECT. These changes could be associated with the biochemical pathophysiology of schizophrenia. Most of the included studies are observational or quasi-experimental, with small sample sizes. However, they show simultaneous changes at different neurobiological levels, with a pathophysiological and clinical correlation. We propose that the research on ECT should be carried out from neurobiological dimensions, but with a clinical perspective.

ABSTRACT Decision-making is influenced by multiple unaware factors. We synthesize some neurobiological correlates of the affective and social components on decision-making, including the impact of acute and chronic stress. We also address the impact of heuristics and biases on clinical practice from the cognitive perspective. At an affective level, the hypothesis of the somatic marker has associated the peripheral body response with central nervous structures in the configuration of decisions; structures such as the orbitofrontal cortex and the hippocampus intervene. The reward and motivation dimensions are involved in social decision-making. In these types of decisions, the ability to mentally engage others and integrate their perspective into decision making is crucial. This function has been related to the posterior superior temporal sulcus, the temporoparietal junction, the anterior cingulate cortex, and the medial prefrontal cortex. However, compliance with socially established norms is also integrated into social decision-making. Acute or chronic stress may affect decision-making, positively or negatively. The hypothalamic-pituitary-adrenal axis has been involved in these processes together with corticostriatal, prefrontal, amygdala and hippocampal circuits. In clinical decision-making, “pre-reflective” emotional, social and cognitive factors are combined, influencing the decisions towards patients. We recommend emphasizing research in this field and strengthening education in this area to recognize these aspects adequately.

RESUMEN: La toma de decisiones está influenciada por múltiples factores muchas veces no conscientes. En este artículo se sintetizan algunos correlatos neurobiológicos del componente afectivo y social sobre la toma de decisiones, incluyendo el impacto del estrés agudo y crónico y la perspectiva cognitiva de las heurísticas y los sesgos en la práctica clínica. A nivel afectivo, la hipótesis del marcador somático ha asociado la respuesta corporal periférica con estructuras nerviosas centrales en la configuración de las decisiones; intervienen estructuras como la corteza orbitofrontal y el hipocampo. En la toma de decisiones sociales se involucran las dimensiones recompensa y motivación. En este tipo de decisiones es crucial la capacidad de mentalizar a otro e integrar su perspectiva en la toma de decisiones. Esta función se ha relacionado con el surco temporal posterosuperior, la unión temporoparietal, la corteza cingulada anterior y la corteza prefrontal medial. No obstante, en la toma de decisiones sociales también se integra el cumplimiento de normas socialmente establecidas. El estrés agudo o crónico puede afectar la toma de decisiones, positiva o negativamente. En estos procesos se han involucrado al eje hipotálamo-hipófiso-adrenal junto con circuitos corticoestriados, prefrontales, amigdalinos e hipocampales. En la toma de decisiones clínicas se conjugan factores “prerreflexivos” emocionales, sociales y cognitivos que influyen directamente en las conductas adoptadas con los pacientes. Recomendamos enfatizar la investigación en esta área y fortalecer su enseñanza para reconocerlos adecuadamente.

ABSTRACT Background: The importance of foods or food constituents in mental health is increasingly recognized, and “nutritional psychiatry” is a growing discipline. Objective: This narrative review aims to present work supporting associations between food or food constituents and mental health, specifically depressive disorders. Methods: The data presented is derived from preclinical and clinical work, including in vitro and in vivo assays, as well as observational studies and randomized clinical trials of dietary interventions. The focus of the review is the mediation of inflammatory processes and oxidative stress by dietary constituents that are an integral part of a healthy diet, such as the Mediterranean diet and similar. Results and Discussion: We present evidence for the role of the diet in prevention and management of depressive disorders, beyond the effect of individual nutrients. The findings indicate that among the dietary components with higher degree of evidence to influence depressive disorders are long chain n-3 polyunsaturated fatty acids (EPA and DHA), and various dietary bioactive compounds, especially plant-derived secondary metabolites represented by polyphenols such as flavonoids and resveratrol. Conclusion: Diet exerts an important role on mental health, and evidence indicates that some dietary constituents contribute to the prevention of depressive disorders.

Resumen Registramos la depredación del gecko Hemidactylus angulatus por la araña Ancylometes bogotensis, en la zona de vida de Bosque Seco Tropical en el norte del departamento del Tolima (Colombia). El reporte aquí descrito constituye un aporte al conocimiento de la historia natural de las especies referenciadas y evidencia el potencial de A. bogotensis como agente de control biológico de especies invasoras de geckos, debido a que podría contribuir a disminuir las poblaciones y el ingreso de estos saurios a zonas boscosas naturales.

Abstract We report the predation on the gecko Hemidactylus angulatus by the spider Ancylometes bogotensis, in the Tropical Dry Forest life zone located at Northern Tolima (Colombia). This short note is a contribution to the knowledge about the natural history of the referenced species because of the potential of A. bogotensis as a biological control agent of geckos that decreases its invasive potential. This is important due to the possibility to make populations of the gecko decline and to restrict the entry of these saurians to natural forested areas.

Resumen La osteoartritis (OA) es una enfermedad degenerativa, cuyo tratamiento convencional incluye medicamentos, fisioterapia o prótesis. Las células madre con Plasma Rico en Plaquetas y factores de crecimiento son una opción que promete controlar los síntomas, mejorar la función y regenerar el cartílago; sin embargo, no se han especificado muchos detalles del tratamiento, como el tipo y la cantidad de células madre que se deben aplicar para obtener mejores resultados. En este estudio buscamos comparar la efectividad, la seguridad y los costos de dos dosis (1X107vs 3X107) de células madre derivadas de tejido adiposo (ADSC), aplicadas por vía intraarticular. Diez pacientes, con OA de rodilla grados II y III, fueron aleatorizados para recibir 10 (n = 5) o 30 millones (n = 5) de ADSC autólogos. Al inicio y 6 a 10 meses después de la inyección, se evaluaron de acuerdo con los criterios clínicos (evaluación médica, escala WOMAC, calidad de vida) y paraclínicos (artroscopia, resonancia, biopsia). En términos de efectividad y seguridad no se observaron diferencias entre los dos grupos de dosificación, ya que todos los pacientes tuvieron una mejoría de acuerdo con los criterios médicos y la escala WOMAC (P = 0,001); en el control artroscópico, 7 pacientes tuvieron una respuesta "buena / muy buena", 1 "neutral" y 2 abandonaron el control; Las biopsias confirman la regeneración articular, aunque no hubo diferencias en las resonancias magnéticas anteriores y posteriores. En la osteoartritis de rodilla, la aplicación de 10 o 30 millones de ADSC fue igualmente efectiva y segura; sin embargo, el protocolo con 10 millones de células no requiere expansión in vitro, requiere menos tiempo, es más simple y tiene un costo menor. Este estudio muestra una buena razón para realizar ensayos clínicos aleatorios para obtener evidencia de mayor calidad.

Abstract Osteoarthritis (OA) is a degenerative disease where conventional treatment includes drugs, physiotherapy, or prostheses. Stem cells and growth factors are a promising option in controlling symptoms, functional improvement and cartilage regeneration; however, many treatment details have not been specified, such as type and number of stem cells that should be applied to obtain optimal results. In this study we sought to compare effectiveness, safety and costs of two doses (1X107vs 3X107) of adipose tissue derived stem cells (ADSC), applied intra-articularly. Ten patients, with knee OA grades II and III, were randomized to receive 10 (n=5) or 30 million (n=5) of autologous ADSCs. At baseline and 6 to 10 months after injection, they were evaluated according to clinical (medical evaluation, WOMAC scale, quality of life) and paraclinical criteria (arthroscopy, resonance, biopsy). In terms of effectiveness and safety there were no differences observed among the two dosage groups since all patients had improvement according to medical criteria and the WOMAC scale (P=0,001); in the arthroscopic control, 7 patients had "good/very good" response, 1 "neutral" and 2 forwent control; biopsies confirm joint regeneration, although there were no differences in the before and after magnetic resonances. In knee osteoarthritis, the application of 10 or 30 million ADSCs was equally effective and safe; however, the protocol with 10 million cells does not require in vitro expansion, requires less time, is simpler and has a lower cost. This study shows good reason to undertake randomized clinical trials to gain higher quality evidence.

RESUMO Objetivo: verificar a associação entre estado nutricional e ocorrência de disfagia orofaríngea em indivíduos com paralisia cerebral. Métodos: estudo transversal, quantitativo, realizado com indivíduos entre dois e 20 anos. Foi avaliado comprometimento neuromotor, ocorrência e grau de disfagia, antropometria, consumo alimentar, via alimentar, fracionamento e consistência da dieta. A avaliação da deglutição foi realizada por fonoaudióloga capacitada, por meio do Protocolo para Avaliação Clínica da Disfagia Pediátrica. Foi realizada análise estatística pertinente, adotando p<0,05%. Resultados: participaram 40 indivíduos com mediana de 8,7 (5,45-14,5) anos, sendo 65% do sexo masculino. Quanto ao comprometimento neuromotor, 72,5% foram classificados no nível IV e V. A prevalência de disfagia foi de 70%, via alimentar predominantemente oral (77,5%) e consistência da dieta normal (55%). Nas curvas de crescimento, todos foram classificados com estatura adequada para idade. Para peso, índice de massa corporal e dobras cutâneas houve, respectivamente, 82,5%, 85% e 62,5% em eutrofia. Foi encontrada associação estatisticamente significante entre disfagia e índice de massa corporal (p=0,018). A média diária de ingestão calórica e proteica foi de 1427,29±338,62 kcal e 56,86±17,57 gramas, respectivamente. Foi encontrada associação estatisticamente significante entre via alimentar e quantidade de proteína ingerida diariamente (p=0,041). Conclusão: a maioria dos indivíduos apresentou disfagia orofaríngea e comprometimento motor mais grave, alimentavam-se por via oral com consistência de dieta normal. Observou-se que quanto maior a dificuldade de deglutição, maior o comprometimento do estado nutricional.

ABSTRACT Objective: to verify the association between nutritional status and the occurrence of oropharyngeal dysphagia in individuals with cerebral palsy. Methods: a cross-sectional, quantitative study with people aged between two and 20 years. Neuromotor impairment, occurrence and degree of dysphagia, anthropometry, food consumption, feeding route, diet fractionation and consistency were evaluated. Swallowing evaluation was performed by a skilled speech-language-hearing therapist, through the Clinical Evaluation Protocol of Pediatric Dysphagia (PAD-PED, Portuguese acronym).The statistical analysis was performed adopting p<0.05%. Results: 40 subjects with a median of 8.7 (5.45-14.5) years, 65% of whom were males. Concerning neuromotor impairment, 72.5% were classified at levels IV and V. The prevalence of dysphagia was 70%, the feeding route being predominantly oral (77.5%) with a normal diet consistency (55%). In the growth curves, all of them were classified within an adequate height for their age. As for weight, body mass index and skinfolds, 82.5%, 85% and 62.5% were eutrophic, respectively. Statistically significant association was found between dysphagia and body mass index (p=0.018). The mean daily caloric and proteic intake was 1427.29±338.62 kcal and 56.86±17.57 grams, respectively. Statistically significant association was found between the feeding route and the amount of protein ingested daily (p=0.041). Conclusion: most subjects presented oropharyngeal dysphagia and more severe motor impairment; they were fed orally with a normal diet consistency. It was observed that the greater the difficulty in swallowing, the greater the impairment of nutritional status.

RESUMO Trichogramma pretiosum Riley, 1879 mantido em ovos de Ephestia kuehniella Zeller, 1879, tem sido utilizado no controle biológico de Spodoptera frugiperda (J. E. Smith, 1797). No entanto, fatores como idade do hospedeiro e experiência prévia, podem influenciar o parasitismo e o comportamento do parasitoide. Esse estudo avaliou a influência da idade dos ovos e da experiência em ovos e extrato de ovos de S. frugiperda no comportamento quimiotáxico e no parasitismo de T. pretiosum. Ovos de S. frugiperda com 24, 48 e 72 horas, foram expostos a fêmeas de T. pretiosum. Também foi avaliado o tempo de experiência do parasitoide, no mesmo hospedeiro, por 1, 3, 4, 5, 6 e 24 horas, assim como, seu tempo de exposição (1, 2, 3 e 24 horas). As respostas quimiotáxicas de T. pretiosum (experiente e não experiente) em extrato de ovos de S. frugiperda foram observadas em olfatômetro tipo Y. As taxas de parasitismo foram registradas em teste de escolha, com insetos experientes e inexperientes com ovos e extrato de ovos de S. frugiperda. O parasitismo em S. frugiperda foi significativamente maior em ovos com 24 horas de idade. Fêmeas inexperientes e experientes por 1, 3 e 4 horas, apresentaram uma menor taxa de parasitismo, quando comparadas a fêmeas expostas por 5, 6 e 24 horas. Não houve diferença de parasitismo em fêmeas expostas por 2, 3 e 24 horas, comparadas às expostas por uma hora. Fêmeas experientes foram mais atraídas ao extrato de ovos de S. frugiperda, do que ao controle (hexano). A porcentagem de parasitismo, em fêmeas inexperientes, foi maior em ovos de E. kuehniella (hospedeiro de origem), no entanto, o mesmo resultado não foi observado em fêmeas experientes.

ABSTRACT Trichogramma pretiosum Riley, 1879 reared on Ephestia kuehniella Zeller, 1879 eggs, have been used in biological control of Spodoptera frugiperda (J. E. Smith, 1797). However, host age and experience just after emergence might have some influence on parasitism and parasitoid behavior. This study evaluated the influence of S. frugiperda host age and egg odor experience, on chemotactic behavior and parasitism of T. pretiosum. Spodoptera frugiperda eggs with 24, 48 and 72 hours were exposed to T. pretiosum females. Parasitoid time experience, in the same host, was evaluated within 1, 3, 4, 5, 6 and 24 hours, as well as, its host exposed time (1, 2, 3 and 24 hours). Chemotactic responses of T. pretiosum (experienced and inexperienced females) to S. frugiperda egg extracts were recorded in Y-tube olfactometer. We also observe parasitism rates (choice tests) in insects with and without experience. The parasitism average was higher in S. frugiperda eggs with 24 hours. Inexperienced females and those experienced for 1, 3 and 4 hours, parasitized less S. frugiperda eggs compared to those for 5, 6 and 24 hours. There was no difference in parasitism from females exposed for 2, 3 and 24 hours when compared to those exposed for one hour. Experienced females were more attracted to S. frugiperda eggs odor than to control (hexano). Parasitism percentage, by inexperienced parasitoids, was greater in E. kuehniella eggs (original host) than in S. frugiperda, however it was not observed in experienced females.

RESUMO Objetivo Verificar se a presença de prontidão para iniciar a alimentação oral, obtida por meio do Preterm Oral Feeding Readiness Scale (POFRAS) se relaciona com o desempenho alimentar na primeira oferta oral de leite, com o tempo de transição da sonda para a via oral plena e o tempo de internação hospitalar. Métodos Estudo longitudinal, que envolveu 65 recém-nascidos pré-termo. Foi realizada a avaliação da prontidão para início da alimentação oral, por meio do POFRAS, constituindo-se dois grupos: com e sem prontidão para iniciar a alimentação por via oral, em dois estratos de idade gestacional ao nascer: de 28 a 33 semanas e de 34 a 36 semanas. Em cada estrato, os grupos foram comparados entre si, quanto ao desempenho alimentar na primeira oferta oral de leite (por meio das variáveis proficiência, taxa de transferência e desempenho alimentar oral) e quanto ao tempo de transição da sonda para a via oral plena e o tempo de internação hospitalar. O teste t-Student ou o teste de Wilcoxon foram utilizados para comparar as variáveis contínuas e o teste exato de Fisher, para as variáveis categóricas. Resultados A prontidão para iniciar a alimentação por via oral se relacionou com melhores resultados de proficiência e taxa de transferência na primeira alimentação, contribuindo para a transição mais rápida da sonda para a via oral plena, nas crianças nascidas com idade gestacional entre 28 a 33 semanas. Conclusão a avaliação por meio do POFRAS permite estabelecer um prognóstico da alimentação oral em recém-nascidos pré-termo, menores de 34 semanas. No entanto, não exclui a necessidade de avaliação da biomecânica da deglutição.

ABSTRACT Purpose To verify whether readiness for oral feeding as evaluated by the Preterm Oral Feeding Readiness Scale (POFRAS) is associated with performance on the first oral feeding; length of transition from tube to full oral feeding, and duration of hospitalization. Methods This was a longitudinal study involving 65 preterm infants. Participants were divided into groups according to readiness for oral feeding as determined by the POFRAS, and gestational age (29-33 weeks and 34-36 weeks). Performance on the first oral feeding (proficiency, transfer rate and overall transfer), number of days from introduction to full independent oral feeding, and length of hospital stay were compared between groups. Continuous variables were compared using Student’s t-test or Wilcoxon’s signed-rank test. Categorical variables were compared using Fisher’s exact test. Results Readiness for oral feeding was associated with higher proficiency and transfer rates on the first oral feeding, resulting in a shorter transition from tube to independent oral feeding in preterm infants with 29 to 33 weeks of gestational age at birth. Conclusion The POFRAS contributed to the prognosis of oral feeding outcomes in preterm neonates with less than 34 weeks of gestational age at birth. However, its use does not eliminate the need for an assessment of swallowing mechanisms.

OBJETIVO: Avaliar a influência da habilidade motora oral do prematuro sobre seu desempenho alimentar oral e crescimento, durante o período de internação neonatal.MÉTODOS: Foram avaliados 51 recém-nascidos (RNs) internados na Unidade de Tratamento Intensivo (UTI) Neonatal de um hospital do Sul do Brasil, entre julho 2012 e março 2013. A avaliação da habilidade de alimentação oral, segundo Lau e Smith, foi realizada após prescrição para início da alimentação por via oral (VO). O desempenho alimentar oral foi avaliado por meio das variáveis dias de transição da sonda para VO plena e tempo de internação. O crescimento foi avaliado por peso, comprimento e perímetro cefálico (PC), utilizando as curvas de Fenton, no nascimento, liberação VO, VO plena e alta hospitalar.RESULTADOS: Ao nascer, 71% dos prematuros eram adequados para idade gestacional, a maioria era do sexo masculino (53%), tendo média de 33,6 (±1,5) semanas de idade gestacional. A idade gestacional nos momentos avaliados não influenciou na habilidade oral do pré-termo, não diferindo entre os níveis. O tempo de transição da sonda para VO plena e o período de internação hospitalar foram menores quanto maior o nível de habilidade oral. Ao nascer, houve uma tendência a baixo peso e baixa habilidade oral. Na liberação da VO, as crianças do nível IV apresentaram maior peso.CONCLUSÃO: O nível de habilidade oral do prematuro interferiu positivamente no tempo de transição alimentar da sonda para VO plena e permanência hospitalar. O crescimento, representado pelo ganho de peso, não sofreu influência do nível de habilidade oral.

OBJECTIVE: To evaluate the influence of oral motor skills of premature infants on their oral feeding performance and growth, during neonatal hospitalization.METHODS: Fifty-one newborns hospitalized in the neonatal intensive care unit of a hospital in Southern Brazil, between July 2012 and March 2013, were evaluated. The evaluation of oral feeding skills, according to Lau and Smith, was applied after prescription for starting oral feeding. The oral feeding performance was analyzed using the following variables: days taken to start independent oral feeding and hospital discharge. Growth was measured by weight, length, and head circumference, using the curves of Fenton, at birth, first and independent oral feeding, and hospital discharge.RESULTS: At birth, 71% preterm infants were proper for gestational age, most of them were males (53%), with average of 33.6 (±1.5) weeks of gestational age. The gestational age in the assessment did not influence the oral feeding performance of the premature infant and did not differ between levels. Time of transition from tube feeding to oral feeding and hospital stay was shorter when the oral skills were higher. At birth, there was a tendency of low weight and low oral feeding performance. Level IV premature infants in the release of oral feeding presented higher weights.CONCLUSION: The level of oral skills of the premature infant interfered positively on time of feeding transition from tube to independent oral feeding and hospital stay. Growth, represented by weight gain, was not affected by the level of oral skill.

Introduction Burning mouth syndrome (BMS) is characterized by a burning sensation in the tongue, palate, lips, or gums of no well-defined etiology. The diagnosis and treatment for primary BMS are controversial. No specific laboratory tests or diagnostic criteria are well established, and the diagnosis is made by excluding all other possible disorders. Objective To review the literature on the main treatment options in idiopathic BMS and compare the best results of the main studies in 15 years. Data Synthesis We conducted a literature review on PubMed/MEDLINE, SciELO, and Cochrane-BIREME of work in the past 15 years, and only selected studies comparing different therapeutic options in idiopathic BMS, with preference for randomized and double-blind controlled studies. Final Comments Topical clonazepam showed good short-term results for the relief of pain, although this was not presented as a definitive cure. Similarly, α-lipoic acid showed good results, but there are few randomized controlled studies that showed the longterm results and complete remission of symptoms. On the other hand, cognitive therapy is reported as a good and lasting therapeutic option with the advantage of not having side effects, and it can be combined with pharmacologic therapy.

Uptake of transferrin by epimastigote forms of the protozoan Trypanosoma cruzi occurs mainly through a cytostome/ cytopharynx, via uncoated endocytic vesicles that bud off from the bottom of the cytopharynx. We have here examined whether detergent-resistant membrane (DRM) domains might be involved in this process. Purified whole cell membrane fractions were assayed for cholesterol levels and used in dot blot analyses. Detergent-resistant membrane markers (cholera B toxin and anti-flotillin-1 antibody) presented positive reaction by dot blots in cholesterol-rich/ protein-poor membrane sub-fractions. The positive dot blot fraction was submitted to lipid composition analysis, showing composition similar to that of raft fractions described for other eukaryotic cells. Immunofluorescence assays allowed the localization of punctual positive signal for flotillin-1, matching the precise cytostome/ cytopharynx location. These data were confirmed by immunofluorescence assays with the co-localization of flotillin-1 and the transferrin uptake site. Our data suggest that DRM domains occur and are integrated at the cytostome/ cytopharynx of T. cruzi epimastigotes, being the main route for transferrin uptake.