627 resultados para cicatrização de ferida


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Pós-graduação em Bases Gerais da Cirurgia - FMB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Ciência Animal - FMVA

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Cats are gradually occupying a more important position as pets and this preference is a result of how easy cat maintenance in an urban environment is, even though they are very prolific and need surgical sterilization. This paper aims at evaluating obtained data within 15 years of research in a university service program that offers free cats sterilization surgery. We carried out a statistical analysis of data shown in the records of animals treated by the program. Surgical sterilization was performed on 647 animals (409 females – 63% and 238 males – 37%). Unilateral cryptorchidism was observed in 9 (3.8%) male cats. Forty (10%) female cats were pregnant at the time of the surgery and the treatment with contraceptives was observed in 67 (16.4%) female cats. One death occurred during anesthesia recovery and 2 cats were euthanized because of wound infection, totalizing an amount of 0.5% of severe complications. From 1996 to 2004, 212 female cats were spayed (122 adults and 90 prepubertal) and during that time two different approaches for ovariohysterectomy were compared: flank laparotomy and ventral midline celiotomy. The flank laparotomy approach was used in only 46 female cats (21.7%) due to some disadvantages observed – the need of an incision on each flank in prepubertal or nulliparous animals and the difficulty or impossibility of total uterus removal. In the same period, 105 male cats underwent orchiectomy via an open technique in which the spermatic cord was linked with nylon thread. From 2005 to 2010, 197 females (106 adults and 91 prepubertal) were spayed. The minilaparotomy technique was used to perform ovariohysterectomy on 139 female cats (70.6%). In this procedure, ovaries and uterus were exteriorized in a blind fashion with a hook through a small midline incision. The traditional midline ovariohysterectomy, which incision length permits direct visualization of the ovaries and uterus, had to be performed in 58 (29.4%) female cats due to advanced pregnancy, full urinary bladder during surgery or obesity. Over the past 6 years, 133 male cats (48 adults and 85 prepubertal) were castrated by means of an open technique in which the spermatic cord was tied to itself. The demand for surgeries during the project demonstrated that people are becoming aware concerning the importance of sterilization when facing cat overpopulation and abandonment.

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Apesar da literatura sobre anestesia em equinos ser ampla, referências sobre técnicas e fármacos anestésicos em muares são escassas. Nesse contexto objetivou-se relatar o caso de uma mula com um ano e meio de idade, fêmea, pesando 232 Kg, que foi atendida no Hospital Veterinário da UNESP de Araçatuba no dia com queixa de ferida granulomatosa no membro torácico direito, na região da quartela. Ao exame físico o animal apresentava frequência cardíaca (FC) de 56 batimentos por minuto (bpm), respiratória (f) de 44 movimentos por minuto (mpm), temperatura retal de 38,1 (T°), mucosas róseas e tempo de preenchimento capilar (TPC) de dois segundos. A ferida apresentava-se com tecido de granulação exuberante, em que a remoção cirúrgica foi indicada. O hemograma completo foi realizado antes da cirurgia, não apresentando alterações significativas. Como medicação pré-anestésica (MPA) utilizou-se xilazina 2% (0,5 mg/Kg/IV) associada com Acepromazina 1% (0,05 mg/Kg/IV). Em seguida, foi feita a indução anestésica com Cetamina 10% (2 mg/kg/IV) e Midazolam 0,5% (0,05 mg/kg/IV). Concomitantimente, foi realizado o bloqueio do nervo sesamóide abaxial lateral e medial com 5 ml de Lidocaína 2% em cada ponto. A cirurgia foi realizada com o animal em decúbito lateral esquerdo, empregando-se anestesia total intavenosa (TIVA), empregando-se a associação do Éter Gliceril Guaiacol (EGG) 5%, Xilazina 2% (1mg/ML) e Cetamina 10% (2 mg/ML). O volume total infundido, totalizando duas bolsas de 250 ml, foi administrado em uma hora e meia de cirurgia. O paciente manteve-se estável durante toda a cirurgia e foi continuamente monitorado quanto a profundidade anestésica por meio dos estágios e planos de Guedel, bem como com a mensuração das frequências cardíaca (FC), que se manteve entre 35 a 40 bpm e respiratória (f) mantida entre 25 a 28 mpm. Ao termino do procedimento cirúrgico o paciente permaneceu assistido durante toda a recuperação, sendo essa tranquila e de boa qualidade, com o paciente assumindo a posição quadrupedal em 15 minutos. A técnica anestésica empregada foi adequada, eficiente e se mostrou viável para realização de cirurgias a campo em muares.

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Several therapeutic approaches have been proposed in order to achieve an esthetically pleasing and harmony smile. The present study reports a case in which gingivectomy was performed in the region of the upper anterior teeth combined with osteotomy in the region of the upper posterior teeth and removal of the superior labial frenum to promote harmony smile by decreasing the gummy smile and adequacy of buccal corridor. Osteoplasty gingivoplasty, and frenectomy procedures were planned and performed in a single session. The extraction of the maxillary third molars was also performed in order to avoid postoperative complications. Follow-up visits were performed at 7, 15, 30 and 180 days postoperatively. At 7 days, the gingival tissue was in the initial process of healing, demonstrating inflammation still in evidence. At 15 days, the gingival tissue was found in the final healing process, showing characteristics of normal health gum. At 30 days, there was complete healing of gingival tissues without clinical exposure of the root surfaces. After 180 days, tissues remained in healthy, demonstrating the success of the treatment. Patient showed complete satisfaction with the results. It can be concluded that, when properly indicated, the combination of gingivectomy, osteotomy and frenectomy procedures are promising therapeutic approaches for promoting harmony smile.

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Introduction: It has been suggested that bone grafts combined with platelet rich plasma (PRP) present greater density than bone grafts without PRP after healing process. However, this result may depend on proportion PRP/autogenous bone (AB) graft used. Objective: The purpose of this study was to analyze radiographically the influence of the proportion PRP/particulate autogenous bone (AB) graft on bone healing in surgically created criticalsize defects (CSD) in rat calvaria. Material and method: 50 rats were divided into 5 groups: C, AB, AB/PRP-50, AB/PRP-100 and AB/PRP-150. A 5 mm diameter CSD was created in the calvarium of each animal. In Group C the defect was filled by blood clot only. In Group AB the defect was filled with 0.01 mL of AB graft. In groups AB/ RP-50, AB/PRP-100 and AB/PRP-150 the defects were filled with 0.01 mL of AB graft combined with 50, 100 and 150 µL of PRP, respectively. All animals were euthanized at 30 days post-operative. Standardized radiographic images of the rat calvaria were obtained using Digora System (Soredex, Finland). The images were evaluated by three examiners using scores that indicated the percentage of radiopacity of the defect. The obtained data were subjected to statistical analysis (Kruskal-Wallis test, p < 0.05). Result: Group C presented radiopacity significantly lower than groups AB, AB/PRP-50, AB/PRP-100 and AB/PRP-150. Group AB/PRP-50 showed radiopacity significantly greater than groups AB/PRP-100 and AB. Conclusion: It can be concluded that the proportion PRP/AB graft influences bone healing in CSD in rat calvaria.

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Indirect composite resin systems have been routinely recommended for making restorations in distressed patients. The purpose of this study was to evaluate histologically in rats the effect of chronic stress on the reaction of subcutaneous connective tissue after implant of Artglass™. For this purpose, 60 rats were divided into four groups (GI (control), GII (stressed), GIII (Artglass™) and GIV (Artglass™. / stressed) received dorsal subcutaneous implants of polyethylene tubes containing saline solution (GI and GII) or Artglass™ (GIII and GIV). In groups of four animals were sacrificed at 7,14 and 28 days postoperatively. The results allowed to observe more intense inflammatory reaction and tissue organization later in the animals subjected to stress.

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Stress is an environmental factor that may predispose individuals to depression. Benzodiazepines have been prescribed as effective drugs in these situations. The purpose of this study was histological evaluate of the effect of chronic stress and benzodiazepine drugs on bone healing. Bone cavities were created in both tibias of 40 male rats were divided into two groups: Control and Treaty. In this, the stressor stimulus was applied 40 days pre-operative and all post-operative days until sacrifice in the morning for 2 hours, by immobilizing restraint. These animals also received diazepam benzodiazepine group, daily, at a concentration of 5mg/Kg/peso body within 15 days of preoperative. In groups of five animals were sacrificed at 7, 14, 30 and 60 days post-surgery. At 7 days postoperatively, while the control group exhibited tissue rich in fibroblasts, the treated group showed newly formed tissue with few fibroblasts and capillaries along with lymphocytes and macrophages. At 14 days postsurgery, the control group showed newly formed trabecular bone while the treated group progressed to thin trabecular bone with numerous osteoblasts on their borders. At 30 days post-operative bone healing is complete in both groups. At 60 days post-operative characteristics observed in the treated and control groups are similar to the previous period, but with more advanced osteogenesis.

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Physiological functions undergo a gradual retardation that begins around 25-30 years and extends to the death. Moreover, this change affects most severely the activities more complex and more intricate responses to tensions or stress. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. The purpose of this study was to evaluate histologically in aged rats the effect of chronic stress on the reaction of subcutaneous connective tissue. For this purpose, 60 rats were divided into four groups (GI (control), GII (stressed), GIII (elderly) and GIV (aged / stressed) received dorsal subcutaneous implants of polyethylene tubes containing saline solution. In groups of four animals were sacrificed at 7,14 and 28 days postoperatively. The results allowed to observe more intense inflammatory reaction and tissue organization later in the aged animals subjected to stress.

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Rehabilitation of edentulous patients has been a challenge for professionals since the primary concepts and fundaments of occlusal rehabilitation. However, this philosophy has been improved by implant-supported fixed dentures that represent a predictable clinical modality on modern dentistry. Nevertheless, considering that the traditional protocol requires a long period for bone healing and definitive rehabilitation, immediate loading of implants has been advantageous for functional and esthetic rehabilitation of patients in a reduced period. The aim of this study is to discuss the biomechanical and functional fundaments of occlusion for implant-supported fixed dentures with mediate and immediate loading to provide clinical evidences for longevity of this treat ment modality based on the current literature. According to this, some prerequisites as proper bone quality, excellent primary stability, sufficient number of implants, rigid splinting, and control and mastering of biomechanical fundamentals of static and dynamic occlusion are mandatory for treatment predictability and longevity.

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The bone repair process is controlled by complex molecular mechanisms that involve systemic and local factors. Fibrin glue is derived from human plasma and mimics the final pathway of coagulation network. Tranexamic acid inhibits fibrinolysis and prevents or decreases the formation of degradation products of fibrin and fibrinogen. The purpose of this study was to evaluate histologically in rats the effect of tranexamic acid associated with the fibrin glue on bone healing. The experiment used 60 (n = 5) male rats in: GI: Control, GII: fibrin glue, GIII tranexamic acid and GIV /fibrin glue/tranexamic acid. Bone defect (2.5mm diameter) was created in right tibia. The animals were euthanized at 7,14 and 30 days postoperatively, and the pieces were processed with hematoxylin and eosin. The results showed at 7 days post-operative surgical cavity filled with dense connective tissue rich in fibroblasts, permeated by delicate neoformed bone trabeculae in percentage of 70-80% for GI, GII and GIII and GIV to 94.8%. At 14 days post-operative newly formed bone was found between 75-85% for GI, GII and GIII and percentage above 95% for GIV. At 30 days postoperative GI and GIV showed 95-100% of mature bone tissue; GII and GIII in percentage close to 80-90%. Based on the results and methodology is concluded that fibrin / tranexamic acid glue association has positive action on bone repair.

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A presente invenção descreve um arcabouço (scaffold) tridimensional biodegradável de fibrina, formado por uma serinoprotease extraída a partir de veneno de serpente, um crioprecipitado rico em fibrinogênio extraído de bubalinos, o diluente cloreto de cálcio e uma solução de uma população de células tronco. O arcabouço é apropriado para suportar uma população de 106 células por mL de fibrina por um período prolongado de tempo, em que as células tronco são mesenquimais, de tecido umbilical e células tronco mononucleares. A invenção descreve, ainda, o processo de obtenção do arcabouço, cujos componentes são providos separadamente e polimerizam-se in situ após mistura. O arcabouço descrito apresenta inúmeras aplicações médicas, podendo aumentar a vascularização, a quimiotaxia celular, a regeneração nervosa e/ou a cicatrização de feridas no local da administração. Devido à sua origem animal, não há o risco de transmitir doenças infecciosas.

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Accidents caused by thermal, chemical, electrical or radioactive agents cause skin lesions causing burns of varying degrees. The therapeutic approach aims to restore damaged tissues and involves a wide range of products on the market. This study aims to evaluate the use of biological dressing, biotech product developed at the Blood Center of Botucatu / UNESP obtained from fresh frozen plasma or platelet concentrate with in vitro addition of thrombin and calcium gluconate. This addition in the platelet concentrate, intended to release the active growth factors of the platelets granules on the healing process. The study of the effectiveness of Platelet Gel home made in Wistar rats was established, in agreement with scald burns, comparing efficacy and cost of Platelet Gel with usual hospital -based treatment collagenase + chloramphenicol plus cost analysis through pharmacoeconomics. We used 25 Wistar rats were divided into 3 treatment groups: Group A, Collagenase + Chloramphenicol; Group B, Platelet Gel and C, control. The products were applied every other day for 30 days in animals. In group A, there was the presence of erythema and crust in all animals. The exudates was indentified 2/10 animals. For the Group B, we observed the presence of erythema and crust at all and no presence of exudates. In group C all the animals showed erythema with no presence of exudates and scab occurred in 1/10. Statistical analysis showed significant difference ( p < 0.0 ) for crust formation between Groups B and C. In the histological analysis, group A showed a slight amount of blood vessels and collagen fibers, moderate amounts of macrophages and fibroblasts was observed while B and C groups showed moderate amounts of blood vessels, macrophages and fibroblasts and discreet presence of collagen fibers. The re-epithelialization occurred in most animals of all groups without significant statistical differences. For the aspects of pharmacoeconomics, the platelet gel presented a better cost - effectiveness in relation to treatment based on collagenase / chloramphenicol. In light of the ethical aspects of the raw material is the result of spontaneous blood donation, the proposal should have biological dressings productions the responsibility of public blood transfusion centers for free distribution. This may point to the production chain of Brazilian blood banks like special blood components for use no intravenous.