938 resultados para Fibre de collagène de type II


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Pós-graduação em Ginecologia, Obstetrícia e Mastologia - FMB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Oxidative stress is related with physiopathology of diabetes mellitus type II and with its secondary complications, such as diabetic nephropathy. Thus, the purpose of this study was to examine the effects of n-acetylcysteine NAC, an antioxidant from Allium cepa, on oxidative stress, morphometrical and nutritional parameters and basal metabolism and energetic substrate utilization, serum glucose and oral glucose tolerance test (OGTT), and renal function of high-sucrose intake rats. Animals were initially divided into three groups. Rats in the control group (C; n=10) were given free access to a standard chow and water; (S; n=10) group received standard chow and 30% sucrose in its drinking water; (SN; n=5) group received standard chow and 2g/L NAC and 30% sucrose in its drinking water. After 25 days of treatments, rats were submitted to indirect calorimetry in fasted and feed states. After 30 days of treatments, rats from C and S groups were divided into four groups of five rats each. The (CC) and (SS) groups were given an intra-gastric dose 0,6mL saline (0,9%NaCl) and the (CNAC) and (SNAC) groups were treated with a intra-gastric dose of 0,6mL NAC (160g/day), and then everybody received a intra-gastric dose of glucose solution (20%) for the OGTT. Animals of S and SN groups have higher liquid consumption and lower food consumption than C group. Calorimetric analyses confirm that despite of the final body weight had not statistical difference among groups, S group have lower resting metabolic rate when compared to C and SN animals. Besides, S group has higher respiratory quotient, higher carbohydrate oxidation and lower lipid oxidation, both in fasted and feed states, than C and SN groups, evidencing the beneficial effect of NAC. Fasting plasma glucose is increased in SS and SNAC animals when compared to CC and CNAC, however SN group has glicemic level at 30 min before OGTT decreased when ...(Complete abstract click electronic access below)

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Obesity along with overweight has been considered one of the most serious public health problems in the world, especially because they are the main risk factors for many chronic diseases such as coronary heart disease, type II diabetes mellitus, hypertension and some types of tumors, which are associated with high mortality rates. The use of functional foods and appropriate diets to promote health has grown as a mechanism for prevention, control and treatment of chronic diseases such as obesity. Several ethnopharmacological studies indicate plants species for the treatment of disorders associated with obesity with a major attraction of this regimen is perceived as safer and more effective for health than the traditional treatment with appetite suppressants. Whereas both food intake and the oral treatment with different compounds can cause changes in gene expression and that a proper diet has been valuable as a mechanism for maintaining the body's vital functions, the objective of this project was to evaluate the effects of standardized extract of Brassica campestris L. in the decrease in weight and food intake control. In vivo trials of this product were conducted and studies of its effects on energy metabolism in non-obese mice and with obesity induced by hypercaloric diet. After induction of obesity by 8 weeks, animals were treated for 21 days with the extract orally. After 21 days the animals were killed and the effects of this product were evaluated on the daily feed intake and on body weight. According to the results obtained, the extract of Brassica campestris was not effective in reducing body weight of obese animals, and did not reduce food intake

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Photodynamic therapy, term introduced by von Tapeiner in 1900, can be defined as the administration of a non toxic drug, i.e., a dye, known as photosensitizer (FS), which subsequently will be illuminated with light of specific wavelength. PDT is based on the interaction among FS, oxygen and light, which through photochemical reactions cause cell death. The FS molecules must have a high probability to form the singlet state after the excitation, which can induce chemical changes in the neighborhood in two ways, called reactions type I and type II. The type II reaction is based on the exchange of energy to molecular oxygen, exciting it to its state of higher energy (singlet), which is highly reactive. The proposed mechanisms for cell death are linked to damage to the DNA, mitochondria and to the cytoplasmic membrane. Several pre‐clinical and clinical trials have been carried out and the PDT is already used in many countries for treatment mainly against certain types of cancer. The therapy also has been gaining strength in antimicrobial control, since the microorganisms have appeared increasingly resistant to current antibiotics. Another attempt to use the PDT is for the inactivation of macro‐organisms, such as micro‐crustaceans and mosquitoes. To this end I tested whether the photosensitizers methylene blue, rose Bengal and the chlorophyll a has insecticidal activity against the yellow fever and dengue vector mosquito, Aedes aegypti. Since these diseases have no effective treatments, its control is linked to the vector control, which has shown resistance to chemical pesticides used. Based on this, this work shows its importance, because it is a new type of mosquito control since all the photosensitizers used are low cost, do not generate toxic products at the concentrations used and showed good results in mortality. The best photosensitizer was rose Bengal... (Complete abstract click electronic access below)

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Obesity along with overweight, has been considered one of the most serious public health problems in the world, especially because they are the main risk factors for many chronic diseases, such as coronary heart disease, type II diabetes mellitus, hypertension and some types of tumors, which are associated with high mortality rates. The use of functional foods and appropriate diets to call health promotion has grown as a mechanism for prevention, control and treatment of chronic diseases such as obesity. Several ethnopharmacological studies indicate plant species for the treatment of disorders associated with obesity with a major attraction of this regimen is perceived as safer and more effective health than the traditional treatment with appetite suppressants. This work aims to develop and standardize models of biological assays in stress and obesity, also aims to evaluate the effect of oil green beans of Coffea arabica in the regulation of body weight and energy balance in mice. To this end, trials were made in vivo studies of this product and their effects on energy metabolism in non-obese mice with obesity induced by hypercaloric diet. After induction of obesity by 8 weeks, animals were treated for 21 days with the extracts orally. After 21 days the animals were killed to evaluate the effects of these products on daily feed intake and on body weight. The group treated with the oil of Coffea arabica L. showed significant weight loss and feed intake high. According to the results, we conclude that the standardized extract of Coffea arabica L. decreased body weight without restriction or decrease the amount of food ingested

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The hypoglossal nerve (HN) is responsible for the intrinsic and extrinsic muscles of the tongue. Knowledge of this is extremely important because this nerve is responsible for tongue movement. HN paralysis can be associated to the disease itself in various zones in which the NH travels, mainly the hypoglossal canal (HC). Variations in shape of the hypoglossal canal have been pointed to as the cause of HN paralysis in several studies. Four hundred dried intact human skulls without sex or race identification, belonging to the Discipline of Anatomy of ICTSJC – UNESP were studied. Each canal was classified into types: type I (without division in the HC), type II (HC with low bone spike), type III (HC more than two projections bone), type IV (presence of complete bony bridge without dividing HC into two distinct canals) and type V (presence of bone bridge by dividing into two HC canals). HC was found in 100% of skulls studied in both side. Regarding types, we found 538 (67.25%) hypoglossal canal of type I (34%, right side and 33.25%, left side), 108 (13.5%) of type II (7.38%, right side, and 6.13%, left side), 60 (7.5%) hypoglossal canal of type III (3.5%, right side and 4.0%, left side) 84 (10.5%) of type IV (4.75%, right side and 5.75%, left side) and 5 (0.63%) of the type V (0.13%, right side and 0.5%, left side). We found 5 (0,63%) different HC and classified ourselves in type VI, VII and VIII. The average angle was 51,3º on right side and 50,25º on left side. Detailed knowledge of the anatomy of the CH supports professionals in interventions of bloody skull base and also in giving the correct diagnosis of the probable causes of paralysis of the hypoglossal nerve

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Odontologia Restauradora - ICT

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The objective of this study is to report the clinical use of 2% Uncaria tomentosa gel against denture stomatitis (DS) as an alternative treatment. The patient was a 65-year-old, denture-wearing woman. At the clinical examination, her palate showed hyperplasic and erythematous mucosa indicating DS type II. DS is a chronic oral disease that affects denture wearers. It occurs as an inflammatory reaction in denture-wearing patients under maxillary prostheses. Candida albicans has been reported as the principal etiological agent. An alternative treatment, the topical application of a gel of 2% U. tomentosa three times a day for 1 week was given to the patient. After 1 week of this treatment, she had significantly reduced signs of the disease. Despite the existence of a great number of antifungal agents, treatment failure is observed frequently. Phytotherapy is becoming more popular worldwide. Currently, the most promising medicinal Amazonian herb is U. tomentosa (Willd.) DC., known as Cat's Claw. Studies of the chemical and pharmacological properties of this medicinal plant have allowed researchers to develop indications for its use. This report demonstrates the effectiveness of U. tomentosa against DS.

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The present study aims at evaluating dimensional alteration of stone casts made from impressions with a standard irreversible hydrocolloid and an antimicrobial one. For this, an alginate without disinfectant (Type II Jeltrate) and other containing chlorhexidine (Type II Avagel) were used, which rose by the same regime of treatment: without disinfection; immersion; and spraying. A 1% sodium hypochlorite solution was used for 10 minutes. To obtain the impressions, a perforated impression tray was made from a standard metal model. After molding, the molds were washed in running water for 30 seconds to simulate removal of saliva. Then, with the exception of the control group, these molds were subjected to disinfection treatment. After 10 minutes they were washed again. 60 samples poured with type V special gypsum (Durone) were obtained, that were measured 3 times in a stereomicroscope (SZX12, Olympus) to record the average of dimensional alterations. The disinfection treatment did not bring significant changes in the models obtained from both alginate tested (standard p = 0.7102; with chlorhexidine p = 0.5832). The results showed a statistically significant and additional advantage of the traditional alginate on alginate with chlorhexidine, with respect to dimensional alteration (p < 0.05).

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)