Faculdade de Ciências Biológicas - FCB/CALTA

URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/5322

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Indução, análises morfológicas e ultraestruturais de calos de maracujazeiro nativo
(Universidade Federal do Pará, 2015-08) CARVALHO, Milene Alves de Figueiredo; PAIVA, Renato; HERRERA, Raírys Cravo; ALVES, Eduardo; CASTRO, Evaristo Mauro de; PAIVA, Patrícia Duarte de Oliveira; VARGAS, Daiane Peixoto
Analysis of calluses with embryogenic characteristics is important for subsequent in vitro regeneration of species with desirable agronomic traits such as the Passiflora gibertii native passion fruit. In this context, the present study aimed to analyze the induction of calluses from leaf explants of Passiflora gibertii N. E. Brown, as well as their morphologic and ultra-structural characterization. Cotyledonary leaves were inoculated in culture medium containing 2,4-D and picloram in association with kinetin. After 30 days of cultivation in the dark, the obtained calluses were prepared for the visualization in electron microscope (transmission and scanning) and light microscope. The results allowed to infer that the addition of picloram and kinetin to the culture medium promotes higher callus formation in cotyledonary leaf explants of P. gibertii than 2,4-D and kinetin. The growth regulator 2,4-D provides the formation of calluses with small isodiametric cells and small intercellular spaces, an organized cellular system and the predominance of round shaped mitochondria. Predominance of large and elongated cells with intercellular spaces, a non-organized cellular system and predominance of elongated mitochondria was observed when picloram was used.
Acesso aberto (Open Access)
Tabus alimentares em medicina: uma hipótese para fisiopatologia referente aos alimentos remosos
(Universidade Federal do Pará, 2013-06) BRITO JUNIOR, Lacy Cardoso de; ESTACIO, Adriana Guimarães
Introduction: Human eating habits in the Amazon, especially in riparian communities, include a series of dietary restrictions (taboos) resulting, in part, from the cultural miscegenation (Native Brazilians, Africans, and Portuguese settlers) that occurred during the formation of this population.1 Among these food taboos, the most important refers to foods considered “remosos” (harmful), an adjective attributable to foods that have “reima”, i.e., that affect the blood and cause itching.2 In the popular Amazon vocabulary, “remosos” foods are heavy foods derived from pork; seafood such as crab, shrimp, scaleless fish; and cascudos, such as the tamuata; birds such as ducks; and some wild animals such as lowland pacas and capybaras. These foods should not be eaten by people at risk, for example, postoperative patients and people with infections, inflammations, or injuries, because of the risk of increasing tissue damage, creating pus, and exacerbating the inflammatory process.3,4 This recommendation, although not fully accepted by local physicians, is frequently made by some local doctors to postoperative patients. However, there are very few studies evidencing the pathophysiology of the effect of these foods on healing and inflammatory processes. Thus, the objective of this study was to promote a short review about the topic of foods considered “remoso” and to propose a theoretical hypothesis for this phenomenon based on fundamentals of immunology and of the Amazon ecosystem in order to scientifically help physicians to understand this phenomenon and treat patients from these regions.

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