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Orientador: Francisco Carlos Groppo / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba / Made available in DSpace on 2018-08-22T06:46:43Z (GMT). No. of bitstreams: 1 Alencar_PhillipeNogueiraBarbosa_M.pdf: 1861524 bytes, checksum: 99b4aeb86d33c5851061af86242547cb (MD5) Previous issue date: 2013 / Resumo: O presente trabalho teve como proposta avaliar o efeito radioprotetor de uma solução homeopática sobre a função salivar e a morfologia de glândulas parótidas de ratos irradiados. A amostra foi composta por 150 animais que foram divididos, aleatoriamente, em 6 grupos de 25 animais: G1 ( grupo controle) - recebeu solução salina v.o., mas não foi irradiado; G2 (controle Irradiado) - tratamento idêntico ao G1 e recebeu dose única de irradiação de 15 Gy; G3 (álcool) - recebeu solução hidroalcoólica dinamizada em 15 CH v.o.; G4 (álcool irradiado) - tratamento idêntico ao G3 e recebeu irradiação; G5 (homeopatia) - recebeu 0,25 ml (aproximadamente 1ml/kg) da solução hidroalcoólica irradiada com 15 Gy e dinamizada em 15 CH v.o.; G6 (homeopatia irradiado) tratamento idêntico ao G5 e foi submetido à irradiação. Decorridos os tempos de 12 horas, 3, 10, 17 e 24 dias após a administração dos fármacos, todos os animais foram induzidos à salivação. Analisando a função salivar, foram observadas diferenças estatisticamente significantes somente para o período de 17 dias, no qual os animais irradiados e tratados com a formulação homeopática mostraram maior salivação dos que os demais grupos na mesma condição. Na análise morfométrica foi medido o número de ácinos em função do tempo, considerando cada grupo separadamente. A análise dos resultados mostrou que houve diferença estatisticamente significante somente para o grupo de animais que recebeu álcool e foi irradiado. Esses animais apresentaram uma tendência de diminuição do número de ácinos ao longo do tempo. Já os animais que receberam homeopatia ou o controle e foram irradiados, não mostraram diferenças estatisticamente significantes ao longo do tempo, sugerindo que o tratamento homeopático pode ter diminuído o efeito do álcool sobre o número de ácinos. Concluiu-se, por meio da função salivar, que houve um efeito radioprotetor tardio da solução homeopática. Pode-se concluir também, por meio da análise da morfologia da glândula parótida, que houve um efeito radioprotetor da solução homeopática / Abstract: The aim of the present study was to evaluate the radioprotective effect of a homeopathic solution in the salivary function and in the parotid gland morphology in irradiated rats. The sample size was 150 rats randomly divided in 6 groups with 25 animals each. The groups were named based on the medication: G1 (Control) - animals received saline solution, p.o., but they were not irradiated; G2 (Irradiated Control) - received the same treatment on G1 and a single dose of 15 Gy of irradiation; G3 (Alcohol) - received a hydroalcoholic solution dynamized at 15 CH, p.o.; G4 (Irradiated Alcohol) - received the same treatment on G3 and a single dose of irradiation; G5 (Homeopathy) - received 0.25 ml (~1mL/kg) of the hydroalcoholic solution irradiated at 15 Gy and dynamized at 15 CH, p.o.; G6 (irradiated homeopathy) - received the same treatment on G5 and a single dose of irradiation. Each group was subdivided in 5 different groups, based on the time point of the euthanasia: 12 hours, 3, 10, 17, and 24 days. The medication was applied for 7 days before and 7 days after the radiation treatment. The irradiated groups received only one dose of 15Gy and after the determined times salivation were induced. The salivary function analysis showed that only the G6 group that was euthanized on the day 17 had a statistical significant difference when compared to the others irradiated groups showing a higher salivation flow rate. In the morphometric analysis, the number of acini present over the time in the parotid gland was observed. The only group that showed a statistical significant difference was the Alcohol Irradiated. This group showed a tendency of reduction in the number of acini over the time. Data from the irradiated homeopathy and irradiated control group were not statistical significant. This suggests that the homeopathic treatment might have reduced the alcohol effect on the number of acini. The homeopathy had a late radioprotective effect of the homeopathic solution based on the salivary function. In addition, it also had a radioprotective effect of the homeopathic solution based on the morphology analysis of the parotid gland / Mestrado / Radiologia Odontologica / Mestre em Radiologia Odontológica

Continuing the study of the relationships between fibrin investment of the tumor, vascularity, and tumor growth, we decided to investigate the relationship of warfarin sodium anticoagulation with tumor growth and vascularization. It was reasoned that if the previously observed altered tumor growth was due the heparin’s anticoagulant effect rather than a direct effect upon the tumor, another anticoagulant with a different mechanism of action would have the same tumor growth reducing capabilities. Warfarin sodium produces reduced fibrin polymer formation by a mechanism entirely different from that of heparin. Heparins’ immediate anticoagulant activity results from a blockade of thrombin’s activity results from a blockade of thrombin’s activity on fibrinogen, prevention of prothrombin conversion to thrombin, and a reduction in platelet adhesiveness. Warfarin’s delayed activity, however, is through an inhibition of vitamin K activity leading to reduced synthesis of several clotting factors. With the decision to use warfarin sodium, experiments were designed to test the hypothesis that a reduction of prevention of fibrin formation and thus tumor encasement with this polymer would alter tumor growth. It was also hypothesized that, accompanying the altered tumor growth, several macroscopic factors including tumor vascularization, extent of tumor attachment, vasodilation of host blood vessels in the locale of the implanted tumor, and local edema fluid would be altered. Experiments were conducted to determine the relationship between the dose of warfarin sodium administered and the degree of alteration of tumor growth and the related factors. An inverse dose-response relationship between dose of warfarin and tumor growth and the related parameters was hypothesized.

The preputial glands of male nude (nu/nu) mice were analyzed by a combination of electron microscopy and gas chromatography to determine whether or not they are affected, like developing hairs and nails, by the nu/nu genotype. Results of the analyses revealed no differences between the glands of nude and normal male mice in either their ultrastructural characteristics or lipid secretory products.

A review of the literature shows that extensive work has been done on the morphology and histology of the adrenal gland of the domesticated rabbit, but it appears that little or no work has been done on other members of the order Lagomorpha. Approximately one hundred specimens of rabbits of various ages and sizes, and of both sexes, were collected over a period of nine months. All adrenal glands were fixed by immersion and were embedded in paraffin. The majority or the glands were sectioned at eight or twelve miora, and were stained with Mallory's triple stain. This investigation shows that the gross morphological variations of the adrenal gland of' each species of native rabbits examined is almost as extensive as the variation found within the different genera and families of the order Lagomorpha. There are fewer histological Variations within a given species, but more extensive variations within genera and families of this order. It must be emphasized that not all morphological and histological structures found in the adrenal gland of all rabbits are the same. What may appear to be a typical histological structure or arrangement in one species of rabbit is not necessarily the typical structure or arrangement in all species.

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