Um grande problema ambiental é a geração de efluentes contaminados com metais tóxicos. Uma alternativa viável ao seu tratamento é a biossorção, como o uso da casca de coco verde. Este trabalho avaliou a capacidade de adsorção de íons de cobre (II) em solução aquosa, utilizando a casca do coco como adsorvente. Primeiramente, a casca foi tratada com água e com solução de NaOH 0,1 mol.L-1. Após o tratamento, foi colocada em contato com solução padrão de cobre II, onde se realizou um planejamento fatorial completo 23. Os melhores resultados foram obtidos pelo tratamento com NaOH.
In this article, we discuss the main aspects regarding the recognition of cell surface glycoconjugates and the immunomodulation of responses against the progression of certain pathologies, such as cancer and infectious diseases. In the first part, we talk about different aspects of glycoconjugates and delve deeper into the importance of N-glycans in cancer immunotherapy. Then, we describe two important lectin families that have been very well studied in the last 20 years. Examples include the sialic acid-binding immunoglobulin (Ig)-like lectins (siglecs), and galectins. Finally, we discuss a topic that needs to be better addressed in the field of glycoimmunology: the impact of oncofetal antigens on the cells of the immune system. New findings in this area are of great importance for advancement, especially in the field of oncology, since it is already known that cellular interactions mediated by carbohydrate–carbohydrate and/or carbohydrate proteins are able to modulate the progression of different types of cancer in events that compromise the functionality of the immune responses.
Last year in Brazil, lung cancer was the third most common tumor in men and the fourth in women, without counting non-melanoma skin cancer. It is the first in the world in incidence among men and the third among women. When we talk about mortality, it is the first among the male audience and the second among the female audience. But what are its main causes? Did COVID-19 contribute to the increase in cases of this neoplasm?
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