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Figueiredo P.B.A.,Centro Universitario Do Para | Nogueira A.J.S.,Federal University of Para
Pesquisa Brasileira em Odontopediatria e Clinica Integrada | Year: 2013

Objective: To evaluate clinically the prevalence of caries and gingivitis in children with cancer. Method: Children aged 3 to 12 years old of both genders participated in the study. Thirty-two had some type of neoplasia and 30 were healthy controls. The patients were evaluated based on the following indexes: DMFT, dmft, Plaque index (PI) and Gingival index (GI) before and 6 months after the beginning of this study. Fisher's exact and Wilcoxon tests were used in the statistical analysis to check the relations among the variables (α=0.05). Results: The most frequent neoplasia was leukemia and chemotherapy was the most common type of treatment. The dental caries indexes (DMFT and dmft) increased in both groups from baseline to the 6-month evaluation, but the difference was statistically significant only for the cancer patients. For PI and GI, no statistically significant differences were observed between the groups or between two evaluation moments. Conclusion: The results reinforce the importance of including a pediatric dentist in the multiprofessional team that treats pediatric cancer patients in order to instruct, diagnose and prevent the main oral manifestations associated with neoplasias and the treatment.

Muller R.C.S.,Federal University of Para | Dantas K.G.F.,Federal University of Para | Alves C.N.,Federal University of Para | Muller A.H.,Centro Universitario Do Para | Palheta D.C.,University of Amazon
Acta Amazonica | Year: 2010

The aninga (Montrichardia linifera, Araceae) is often found in the floodplain ecosystems of the Amazon and is the natural diet of animals such as manatees, turtles, fish, buffalo and cattle. Aiming to contribute to the chemical knowledge and nutritional value of this plant, leaves and fruits of M. linifera were collected on the banks of the Guama and Maratauira rivers, Para State, Brazil. We determined the moisture content, ash mineral composition, lipids, protein, fiber, carbohydrate and caloric value of the fruits and leaves. The mineral composition (Ca, Mg, Cu, Fe, Zn and Mn) was obtained by flame atomic absorption spectrometry. The leaves and the fruits of M. linifera had caloric values of 289.75 kcal and 355.12 kcal, respectively; and a low protein concentration, 0.44% for leaves and 0.24% for fruits. Manganese concentrations were 3279.46 mg kg-1 for leaves and 18151.53 mg kg-1 for fruits. These Mn concentrations are considered toxic, as they exceed the maximum tolerable for the ruminants (1000 mg kg-1). The M. linifera has the capacity to absorb and bioaccumulate large amounts of Ca, Mg and Mn in the soil, which makes it inappropriate for exclusive use as food for turtles, cattle and buffaloes, requiring more studies for its application as part of the diet.

Montrichardia linifera is an aquatic plant widely use in Amazon folkmedicine. However, very little is known about the chemical composition and biological activity. In search of biologically active (s) substance (s) phytochemical bioassay-guided study was conducted evaluating hexane extract and ethanol extract obtained from stems of this species. Since only the ethanol extract presented toxicity against Artemia salina and activity against Plasmodium falciparum, this extract was selected for chromatographic fractionation. The biological activities were concentred in dichloromethane fraction which showed high toxicity against A. saline (LD 50< μg mL -1) and high antiplasmodial activity (IC 50 <10 μg mL -1), showing promising antimalarial activity. Of this fraction, the aromatic compound p-hydroxybenzaldehyde was isolated for the first time in this plant.

Ribeiro A.L.R.,Centro Universitario Do Para | Kataoka M.S.S.,Federal University of Para | Pinheiro J.J.V.,Federal University of Para
Journal of Craniofacial Surgery | Year: 2014

Vascular injuries are a constant risk in facial trauma, although bone and soft tissues of the face have provided some protection to the larger blood vessels. However, penetrating injuries usually do not have this type of protection and can damage significant vascular arteries. This article presents a case of a stab wound, which led to airway obstruction arising to a large sublingual hematoma due to lingual artery injury. A healthy 44-year-old man was stabbed in the submandibular region and admitted with an airway obstruction. He was subjected to an emergency tracheotomy and evolved with progressive sublingual edema. Computed tomography (CT) angiography showed a left lingual artery injury with the formation of an expansive hematoma. The CT angiography findings helped to identify the cause of the hematoma and guided the surgery to drain the hematoma after ligation of the lingual artery. The treatment was safely performed as planned and evolved uneventfully. The patient recovered fast and well and presented normal functions 6 months after the treatment. This surgical technique is an effective method for treating such injuries because it can be safely performed when guided by CT angiography. The authors argue that the demand for vascular lesions should be routine in patients who have facial trauma. Copyright © 2014 by Mutaz B. Habal, MD.

Do Amarante C.B.,Museu Paraense Emilio Goeldi | Do Amarante C.B.,Federal University of Para | Da Silva J.C.F.,Federal University of Para | Muller R.C.S.,Federal University of Para | And 2 more authors.
Quimica Nova | Year: 2011

Levels of Ca, Mg, Fe, Zn, Cu and Mn were determinated by FAAS in the tea and dry matter from senescent leaf from Montrichardia linifera, plant used in folk medicine Amazon. The content of these metals that are transferred of the leaf to the infusions have presented significant reductions, however, the Mn values in the infusion may exceed the tolerable daily intake (11 mg) if consumption of this tea is greater than 1.0 L per day. So the tea of senescent leaves of M. linifera may be considered as a toxic beverage and thus its use is not advised.

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