Results: 9

Cranial bone regeneration with collagen type I and polyvinylpyrrolidone (Fibroquel®) combined with hyaluronic acid in Wistar rats: morphological study

Int. j. morphol; 39 (3), 2021
SUMMARY: The purpose of this study was to evaluate by morphological methods, if a mixture of Fibroquel® and hyaluronic acid implanted in an animal model of cranial bone injury could promote bone regeneration. 12 Wistar rats were divided in three groups, control group, bone injury without treatment and b...

Comparación de la respuesta clínica a la aplicación de hilano G-F 20 y colágeno-PVP en pacientes con artrosis de rodilla

Acta ortop. mex; 31 (6), 2017
Resumen: Antecedentes: La osteoartritis de rodilla es una enfermedad articular caracterizada por degeneración, pérdida del cartílago y alteración del hueso subcondral asociadas a cambios en los tejidos blandos. En una muestra de 2,500 individuos se encontró una prevalencia de artrosis de 2.3% (IC ...

Lumbar fusion with collagen type I and polyvinylpyrrolidone in combination with autograft. An experimental study in New Zealand rabbits

Acta ortop. mex; 31 (4), 2017
Abstract: Introduction: Multiple strategies have been developed looking for upgrading the consolidation rate of spine arthrodesis with autolog bone graft, but no evidence exists that adhesion with Collagen type 1 and polyvinylpyrrolidone (FibroquelMR) have application on this field. Objective: Determ...

pH-sensitive polyvinylpyrrolidone-acrylic acid hydrogels: Impact of material parameters on swelling and drug release

Braz. j. pharm. sci; 50 (1), 2014
In this study, we fabricated pH-sensitive polyvinylpyrrolidone/acrylic acid (PVP/AA) hydrogels by a free-radical polymerisation method with variation in the content of monomer, polymer and cross-linking agent. Swelling was performed in USP phosphate buffer solutions of pH 1.2, 5.5, 6.5 and 7.5 with const...

Comparison of different methods for total RNA extraction from sclerotia of Rhizoctonia solani

Electron. j. biotechnol; 17 (1), 2014
Background Rhizoctonia solani (teleomorph: Thanatephorus cucumeris) is one of the most important pathogens of rice (Oryza sativa L.) that causes severe yield losses in all rice-growing regions. Sclerotia, formed from the aggregation of hyphae, are important structures in the life cycles of R. solani and ...

Hidrogéis de PVP e blendas de PVP/polianidridos como potenciais curativos para feridas crônicas

Hidrogéis compreendem uma importante classe de materiais poliméricos adequados à aplicação como curativos de feridas e queimaduras. A estrutura tridimensional hidrofílica dos hidrogéis permite que estes mantenham a umidade ideal no leito das feridas, absorvam o exsudato e não causem danos ao novo...

Citotoxicidade in vitro das membranas de hidrogel reticuladas por radiação ionizante
In vitro cytotoxicity of hydrogel membranes reticulate by ionizing radiations

Rev. Inst. Adolfo Lutz; 59 (1/2), 2000
Hidrogéis constituídos de poli N-vinil-2-porrolidona (PVP), ágar e polietilenoglicol (PEG) säo utilizados como membranas para uso tópico, no tratamento de lesöes de pele. Com o objetivo de melhorar algumas das propriedades mecânicas da membrana, como tensäo de ruptura e elongaçäo, substituiu-se...

Tratamiento de la pseudoartrosis de tibia con colágeno polivinilrrolidona
Treatment of non-union of the tibia by colagen-polyvinylpirrolidone

Se formaron dos grupos con pseudoartrosis de la tibia, en A con 31 casos de 6 a 72 años a quienes se les aplicó semanalmente colágeno-polivilpirrolidona durante 6 semanas y el B con 30 pacientes de características similares a quienes se les aplicó placebo. Los resultados mostraron consolidación ós...