Fernando de Oliveira

A nortriterpenoid, triterpenoids and ecdysteroids from Pfaffia glomerata☆

Abstract Glomeric acid, a new triterpenoid and pfameric acid, a new nortriterpenoid, have been isolated together with ecdysterone, rubrosterone, oleanolic acid

Mineralization of mandibular third molars can estimate chronological age—Brazilian indices

Forensic age estimation is an important element of anthropological research, as it produces one of the primary sources of data that researchers use to establish the identity of a person living or the identity of unknown bodily remains. The aim of this study was to determine if the chronology of third molar mineralization could be an accurate indicator of estimated age in a sample Brazilian population. If so, mineralization could determine the probability of an individual being 18 years or older. The study evaluated 407 panoramic radiographs of males and females from the past 5 years in order to assess the mineralization status of the mandibular third molars. The evaluation was carried out using an adaptation of Demirjians system. The results indicated a strong correlation between chronological age and the mineralization of the mandibular third molars. The results indicated that modern Brazilian generation tends to demonstrate an earlier mandibular third molar mineralization than older Brazilian generation and people of other nationalities. Males reached developmental stages slightly earlier than females, but statistically significant differences between the sex were not found. The probability that an individual with third molar mineralization stage H had reached an age of 18 years or older was 96.8-98.6% for males and females, respectively.

Caracterização morfológica da cana-do-brejo Costus spiralis (Jacquim) Roscoe - Zingiberaceae - Costoideae

The botanical species Costus spiralis (Jacquim) Roscoe popularly known as cana-do-brejo is described morphologically and anatomically. The principal object of this paper is to supply subsidies for identification of crude drug.

Morphological and histological effects on the medial pterygoid muscle after unilateral exodontia in gerbils.

Morphological effects on the medial pterygoid muscle were evaluated in 20 male gerbils (average weight, 55 g) after occlusal alterations induced by extraction of left side molar teeth. Controls were only submitted to surgical stress. Sixty days after surgery, the groups were divided into two subgroups for the following studies: (1) observation of macroscopic morphology and vessels distribution (n=10); (2) light microscopy histological analysis (n=10). Group results were statistically compared using the Wilcoxon and Mann-Whitney tests, with a significant value of p<0.05. Statistical differences in biometric data were found between the left and right sides of the experimental group (p=0.043), and between the left side of the control group when compared to the same side in the experimental group (p=0.044). Vessels supplied by bundles of the external carotid artery in the medial pterygoid muscle did not show distribution differences in group comparisons. Histological alterations were found in the ipsilateral side of the experimental group, with a central localization of the nucleus and degenerative aspect of the fibers, usually near to internal aponeurosis. Fiber diameters seemed reduced and the neuromuscular spindles were localized near internal aponeurosis and had a modified appearance. It is concluded that the medial pterygoid muscle in the gerbil is sensitive to alterations of the masticatory movements.

Secoiridoid glucosides fromChelonanthus chelonoides

Abstract Two new secoiridoid glucosides, chelonanthoside and dihydrochelonanthoside, have been isolated from whole plants of Chelonanthus chelonoides along

Caracterização farmacognóstica de pau d'alho Gallesia integrifolia (Spreng.) Harms

The authors present a morphological and histologycal study of the leaf of Gallesia integrifolia (Spreng.) Harms, analysing the most characteristics elements for its identification. A screening the histochemical reactions in leaves are also given. Fresh and crude drug are histochemically analysed.

Confrei: virtudes e problemas

Among selected plants for study on CEME, comfrey has been one of the most evident. Many possible virtuousness and problems have been claimes to it but there is no study on the identify of the utilized plant material. Many times some other plants were utilized to substitute comfrey and its not known what specie of Symphytum is utilized.

Morfologia da unidade de dispersão e germinação de Cordia sellowiana cham. e Cordia myxa l

Cordia sellowiana Cham. and Cordia myxa L. (Boraginaceae Jussieu) had their dispersion units studied, with emphasis on their morphology and seed germination process. The fruits from both Cordia sellowiana and Cordia myxa are of the drupoid nuculanium type. The protrusion of the primary root in the former species occurs through a pyrene longitudinal fissure; in the latter it is one through an opening in the operculum. In both species, seed germination is of the epigel phanerocotylar type. The seedlings have plicate cotyledons.

Morfodiagnose de Mikania laevigata Schultz Bip. ex Baker - guaco-do-mato - estudo do Axófito

The root and the stem of the botanical specie Mikania laevigata Schultz Bip. ex Baker, commonly known as guaco-do-mato, were morphologically and anatomically studied. It was concluded that there are very small anatomical structures differences between both the vegetal drugs and was proposed the observation of the consistence apex and base fragments of the leaves to assure the differential diagnosis.

Características físicas e químicas do extrato fluido de Cordia ecalyoulata Vell - Boragináceae

Physical and chemical characteristics and allantoin content of Cordia ecalyculata Vell fluid extract are presented. Allantoin content varied from 0,36% to 0,73% in these fluid extracts, depending on the source of plant material. Allantoic acid, a by-product of allantoin, was also detected on TLC, mainly in ph-altered fluid extracts.