7 research outputs found
The influence of lidocaine and racemic bupivacaine on neuromuscular blockade produced by rocuronium: a study in rat phrenic nerve-diaphragm preparation
Effects of ethanol on the osteogenesis around porous hydroxyapatite implants
Alcohol consumption compromises bone tissue, and thus may either impair or stop the fixation and maintenance of osseointegrated implants. To evaluate the effects of 5% and 15% ethanol on bone neoformation around porous hydroxiapatite implants. Fifteen rats were separated into 3 groups of 5 animals each: control (CT); 5% alcohol (A); and 15% alcohol (AA). After four weeks of ethanol consumption, the rats received porous hydroxiapatite implants into surgically made cavities in the femur. After surgery, the animals continued to consume ethanol until day 90 of the experiment, when they were euthanised and their femurs removed for histological processing. Bone tissue was found around the ceramic specimens of all the animals. The largest volume of neoformed bone around ceramic specimens occurred in the CT group, and the smallest in the AA group, followed by the A group. It was concluded that ethanol consumption produced a negative effect on osteogenesis around hydroxyapatite implants. Even small doses, such as the 5% ethanol dilution can interfere with bone repair
Effects of ethanol on the osteogenesis around porous hydroxyapatite implants
Alcohol consumption compromises bone tissue, and thus may either impair or stop the fixation and maintenance of osseointegrated implants. To evaluate the effects of 5% and 15% ethanol on bone neoformation around porous hydroxiapatite implants. Fifteen rats were separated into 3 groups of 5 animals each: control (CT); 5% alcohol (A); and 15% alcohol (AA). After four weeks of ethanol consumption, the rats received porous hydroxiapatite implants into surgically made cavities in the femur. After surgery, the animals continued to consume ethanol until day 90 of the experiment, when they were euthanised and their femurs removed for histological processing. Bone tissue was found around the ceramic specimens of all the animals. The largest volume of neoformed bone around ceramic specimens occurred in the CT group, and the smallest in the AA group, followed by the A group. It was concluded that ethanol consumption produced a negative effect on osteogenesis around hydroxyapatite implants. Even small doses, such as the 5% ethanol dilution can interfere with bone repair
Efeitos do etanol sobre a osteogênese ao redor de implantes de hidroxiapatita porosa
Alcohol consumption compromises bone tissue, and thus may either impair or stop the fixation and maintenance of osseointegrated implants. To evaluate the effects of 5% and 15% ethanol on bone neoformation around porous hydroxiapatite implants. Fifteen rats were separated into 3 groups of 5 animals each: control (CT); 5% alcohol (A); and 15% alcohol (AA). After four weeks of ethanol consumption, the rats received porous hydroxiapatite implants into surgically made cavities in the femur. After surgery, the animals continued to consume ethanol until day 90 of the experiment, when they were euthanised and their femurs removed for histological processing. Bone tissue was found around the ceramic specimens of all the animals. The largest volume of neoformed bone around ceramic specimens occurred in the CT group, and the smallest in the AA group, followed by the A group. It was concluded that ethanol consumption produced a negative effect on osteogenesis around hydroxyapatite implants. Even small doses, such as the 5% ethanol dilution can interfere with bone repair.O consumo de álcool é prejudicial à integridade do tecido ósseo; consequentemente, pode dificultar ou até mesmo impedir a fixação e manutenção dos implantes osseointegráveis. Avaliar os efeitos do etanol (5% e 15%) sobre a neoformação óssea ao redor de implantes de hidroxiapatita porosa. Foram utilizados 15 ratos divididos em três grupos de 5: controle (CT); álcool 5% (A); e álcool 15% (AA). Após quatro semanas de consumo de etanol, a hidroxiapatita porosa foi implantada em cavidades produzidas cirurgicamente nos fêmures dos animais. Após as cirurgias, os animais continuaram a consumir etanol até completar 90 dias de experimento, quando foram sacrificados e os fêmures isolados para o processamento histológico. Em todos os animais foi encontrado tecido ósseo junto aos corpos cerâmicos. O volume de osso formado ao redor dos corpos cerâmicos foi maior no grupo CT em relação aos demais grupos. Os animais do grupo AA foram aqueles que apresentaram menor volume de osso neoformado, seguidos dos animais do grupo A. Conclui-se que o consumo de etanol produziu efeito negativo sobre a osteogênese ao redor dos implantes de HAP, e que mesmo doses pequenas, como a diluição de etanol 5%, podem interferir na reparação óssea.11511