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Background: Croton species are widely spread around the world, and present a varied chemical composition distributed in many classes of secondary metabolites, such as terpenoides, alkaloids, phenolic compounds and phenylpropanoids. These compounds can be obtained by different extraction methods, and more recently, with supercritical fluids. The crude and isolated extracts may have applications due to their biological activities in animals and humans. Methods: The text was written based on literature data from 1996 onwards. Results: The research showed in a concise way the botanical and taxonomic aspects of Croton and the success of its application is in studies related to the biological activities of the plant parts. It was also related to the chemical composition of its extracts and isolated compounds, obtained by many methods. Conclusion: In summary, the review feature studies reported the use of extracts and isolated Croton compounds due to their biological effects with antioxidant, antimicrobial, anti-inflammatory, neuroprotective, antitumor, anticancer, cytotoxic, insecticidal and allelopathic activities, with potential application in food, cosmetics, pharmaceuticals, and agrochemicals products.

Introduction: Down syndrome individuals have different gait patterns, which include specific characteristics such as foot rotation asymmetry. Objective: The aim of this study was to analyze the relationship between this asymmetry and the previous acquisition of hands-and-knees crawling in Down syndrome children, as well as the probable association of this gait to gender, ethnicity, comorbidities, physiotherapy, and occupational therapy interventions. Methods: In this cross-sectional study, 361 children with or without foot rotation asymmetry were selected. An online questionnaire was administered to the parents or guardians of those children. Results: Hands-and-knees crawling decreased the prevalence of foot rotation asymmetry in Down syndrome children. The longer it took for walking onset, the higher the prevalence of this asymmetry. Indeed, for each month of delay there was a 7% increase in prevalence. There was a significant relationship between orthopedic alterations in knees or flat feet and foot rotation asymmetry. There was no significance related to gender, ethnicity, other comorbidities, physiotherapy or occupational therapy interventions. Conclusion: The findings in this study revealed that foot rotation asymmetry may be related to the acquisition of the motor skills described above, especially with regards to hands-and-knees crawling and walking onset.

Currently there is an increasing interest in publications on the use of corpses for research in Brazil and worldwide. Scientific evidence reveal that these studies have little ethical and regulatory control. In Brazil, the regulation of this subject is scarce and scattered among laws and sublegal normative acts, hindering the knowledge of ethical and legal practices adopted by researchers. This article analyzes the laws and norms for scientific research on corpses in Brazil through a corpus that underlies this type of research. From the 1940-2012 period, we found seven documents of the Brazilian legislation that gather information for ethical and clear research. Finally, we present guidelines and a protocol to be followed by researchers for the development of ethical and legal studies with corpses in Brazil.

One of the main reasons for environmental disturbances such as declination in pasture productivity and biodiversity losses is the high infestation of herbaceous weeds, generally referred to as "Juquira" in the Amazon region. If they are not adequately controlled, such infestation might lead to degradation of pasture, resulting in complete loss of productivity and subsequent abandonment of the area. In this sense, this chapter aims to describe the main invasive species present in the Amazon region, as well as to characterize both the old and innovative techniques of use in agriculture, in large and small scale, for the control of agricultural pests.

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