Consulta: creatorFacets:"Vulcani,V.A.S."
Registros recuperados: 8
Data/hora: 05/06/2024 02:11:10

In vivo biocompatibility of nanostructured Chitosan/Peo membranes
Provedor de dados: 45
Autores: Vulcani,V.A.S.; Franzo,V.S.; Rabelo,R.E.; Rabbers,A.S.; Assis,B.M.; D'Ávila,M.A.; Antoni,S.M.B.
Electrospinning is a technique that allows the preparation of nanofibers from various materials. Chitosan is a natural and abundant easily obtained polymer, which, in addition to those features, proved to be biocompatible. This work used nanostructured chitosan and polyoxyethylene membranes as subcutaneous implants in Wistar rats to evaluate the biocompatibility of the material. Samples of the material and tissues adjacent to the implant were collected 7, 15, 30, 45 and 60 days post-implantation. Macroscopic integration of the material to the tissues was observed in the samples and slides for histopathological examination that were prepared. It was noticed that the material does not stimulate the formation of adherences to the surrounding tissues and that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanotechnology; Biomaterials; Electrospinning.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000401039

Additive effect of pulp pequi oil (Caryocar brasiliense Camb.) on the biocompatibility of collagen and gelatin membranes in subcutaneous implants
Provedor de dados: 45
Autores: Rabbers,A.S.; Rabelo,R.E.; Oliveira,L.P.; Ribeiro,M.; Martins,V.C.A.; Plepis,A.M.G.; Vulcani,V.A.S.
ABSTRACT Trauma or disease inflicted by tissue injuries may cause tissue degeneration. The use of biomaterials for direct or indirect repair has emerged as a promising alternative, and has become an important research topic. The pequi fruit (Caryocar brasiliense Camb.) has shown antifungal, antibacterial, anti-inflammatory, healing, antitumor, and antioxidant properties. The objective of this study was to develop a new biomaterial using a combination of collagen, gelatin, and pulp pequi oil, and to evaluate its biocompatibility in comparison with that of biomaterials produced without pulp pequi oil. Membranes were prepared from a mixture of bovine tendon collagen, commercial gelatin, and pulp pequi oil. The inflammatory and cicatricial processes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pequi oil; Membranes collagen; Tissue injuries.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000300811

Microstructure of Holstein and Gir breed adult bovine hooves: histomorphometry, three-dimensional microtomography and microhardness test evaluation
Provedor de dados: 45
Autores: Rabelo,R.E.; Vulcani,V.A.S.; Sant'Ana,F.J.F.; Silva,L.A.F.; Assis,B.M.; Araújo,G.H.M.
This study aimed to characterize and compare the aspects involved in the microstructural formation of the Holstein and Gir breed hoof wall by histomorphometry, three-dimensional microtomography and microhardness test techniques. Seventy-two (18H/18G thoracic and 18H/18G pelvic) Holstein (H) and Gir (G) breed hooves were collected in slaughterhouses. The hooves were divided into six groups according to breed and age group: 24 to 36 months (C1H/C1G), 36 to 60 months (C2H/C2G) and over 60 months (C3H/C3G). The normality and homogeneity analysis of morphometric variables by the Kolmogrov-Sminov and Bartlett tests was conducted as a statistical model. Once the assumptions were met, the Sigmastat 3.5 software was used and the means were compared by T test. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diseases of cattle; Digits; Three-dimensional microtomography; Dermal papillae; Podiatry.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601492

Insertion of the LINE-1 element in the C-MYC gene and immunoreactivity of C-MYC, p53, p21 and p27 proteins in different morphological patterns of the canine TVT
Provedor de dados: 45
Autores: Lima,C.R.O.; Faleiro,M.B.R.; Rabelo,R.E.; Vulcani,V.A.S.; Rubini,M.R.; Torres,F.A.G.; Moura,V.M.B.D.
ABSTRACT The canine transmissible venereal tumor (TVT) affects the external genitalia of dogs by the natural transplant of viable tumor cells. Thus, this research aimed to diagnose and characterize TVT morphological patterns, identify the insertion of the LINE-1 element in C-MYC gene, by means of the polymerase chain reaction (PCR), and evaluate the immunohistochemical expression of C-MYC, p53, p21 and p27 proteins. The relationship between C-MYC and p53 proteins and their interference on the expression of p21 and p27 were also studied. For that, 20 samples of naturally occurring TVT were used, subjected to cytopathological, histopathological and immunohistochemical analysis, and to molecular diagnosis of neoplasia. The increased tissue expression and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Cell; Cytology; Immunohistochemistry.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300658

Histomorphological evaluation of the digital coronary region at different fetal development stages of Holstein cattle
Provedor de dados: 45
Autores: Rabelo,R.E.; Vulcani,V.A.S.; Sant'ana,F.J.F.; Lima,C.R.O.; Dutra,H.T.; Rabbers,A.S.; Silva,L.A.F.
The scientific literature lacks detailed morphological descriptions of the histological development and cell differentiation of fetal bovine hoof. In this study, 40 extremity members of Holstein bovine fetuses were collected and divided into four groups (G1 to G4) based on the estimated age. Fragments were removed from wall and sole, processed and stained with hematoxylin - eosin (HE) for light microscopy observation. In G1, it was found that the epidermis was very thin, including keratinocyte layers and clusters of mesenchymal cells. In group G2 it was observed that the thickness of the epidermis covering the limbs remained variable and laminar corium developed in the germinal layer. In group G3 it was noted that in the germinal epithelium there were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine hoof; Podiatry; Fetal development.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000100001

Biochemical composition of the hoof capsule of buffaloes and its influence on hoof quality
Provedor de dados: 45
Autores: Assis,B.M.; Vulcani,V.A.S.; Silva,L.A.F.; Dias,M.; Pancotti,A.; Lima,C.R.O.; Rabelo,R.E.
ABSTRACT The purpose of this study was to establish the biochemical parameters of the abaxial wall, dorsal wall and sole of the hoof of the medial thoracic, lateral, and medial pelvic digits of buffalos. The hoof samples were subjected to destructive biochemical analyses to identify the dry material (DM), mineral matter (MM), organic matter (OM), crude protein (CP) and ether extract (EE) contents. Sulfur (S), calcium (Ca), potassium (K), phosphorus (P), zinc (Zn) and copper (Cu) levels were determined based on nondestructive biochemical analyses. The parameters of dry material, mineral matter, organic matter, crude protein and ether extract of hoof capsule of the digits of buffalos can be determined by means of both destructive and nondestructive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Buffaloes; Keratinized epidermis; Minerals; Crude protein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100057

Development and evaluation of accessories to improve the posture of veterinary surgeons in surgical procedures conducted in the field
Provedor de dados: 45
Autores: Vulcani,V.A.S.; Silva,L.A.F.; Rabelo,R.E.; Silva,O.C.; Mendes,L.A.; Freitas,S.L.R.; Rabbers,A.S.; Assis,B.M.
ABSTRACT The study was conducted based on the information collected on rural properties in the state of Goiás, during practical classes of Surgical Clinic in Large Animals at the Veterinary Hospital of the Escola de Veterinária e Zootecnia of the Universidade Federal de Goiás and during the implementation of outreach projects developed by the institution. An acropostite-phimosis surgical procedure in the bulls in the field was selected, lasting over 30 minutes and requiring movements, posture and strength on the part of the surgeon. Devices were proposed and developed to provide improved comfort and safety to surgeons. The first device was a stool to be used by the professional during the execution of the surgical intervention. The use enabled the surgeon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine; Surgery; Diseases; Postoperative.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000501301

Novas perspectivas no diagnóstico e tratamento da acropostite-fimose em touros
Provedor de dados: 45
Autores: Rabelo,R.E.; Silva,L.A.F.; Borges,N.C.; Vulcani,V.A.S.; Oliveira,R.S.; Santos,G.P.; Queiroz,P.J.B.
RESUMO A acropostite-fimose é um processo inflamatório da extremidade do prepúcio, diagnosticada com frequência em touros. O presente estudo objetivou avaliar o exame ultrassonográfico na definição da viabilidade do folheto prepucial interno (FPI) e na evolução clínica do pós-operatório, após o emprego de fios de categute ou poliglactina na hemostasia e de algodão ou poliglactina na confecção de sutura padrão Donatti empregada para fixar o FPI à pele prepucial no transoperatório da acropostite-fimose em touros. A sutura utilizada foi captonada ou não captonada, e os animais submetidos ao procedimento cirúrgico apresentavam no mínimo dois terços do FPI viável. Os touros foram alocados, aleatoriamente, em quatro grupos contendo nove animais cada, de acordo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Cirurgia; Exame clínico; Prepúcio; Reprodução.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400851