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Effect of Atorvastatin in radiographic density on alveolar bone loss in wistar rats
Goes, Paula; Lima, Ana Patrícia Souza; Melo, Iracema Matos; Rêgo, Rodrigo Otávio Citó César; Lima, Vilma.
  • Goes, Paula; Federal University of Ceará. Dental School. Department of Clinical Dentistry. Fortaleza. BR
  • Lima, Ana Patrícia Souza; Federal University of Ceará. Dental School. Department of Clinical Dentistry. Fortaleza. BR
  • Melo, Iracema Matos; Federal University of Ceará. Dental School. Department of Clinical Dentistry. Fortaleza. BR
  • Rêgo, Rodrigo Otávio Citó César; Federal University of Ceará. Dental School. Department of Periodontics. Sobral. BR
  • Lima, Vilma; Federal University of Ceará. Medical School. Department of Physiology and Pharmacology. Fortaleza. BR
Braz. dent. j ; 21(3): 193-198, 2010. ilus, tab
Article in English | LILACS | ID: lil-556816
ABSTRACT
The purpose of this study was to evaluate the effect of Atorvastatin (ATV) on alveolar bone loss induced in rats. Periodontitis was induced by ligature placement around the upper second left molar in a total of 24 male Wistar rats (± 200 g). Groups of 6 animals received via oral gavage either saline or ATV (1, 3 and 9 mg/kg) during 11 days. After this time, the animals were sacrificed and their maxillae were removed, defleshed, radiographed by Digora System®, and latter stained to be photographed using a digital camera. Data were analyzed statistically by ANOVA and Bonferroni test at 5 percent significance level and presented as mean ± SEM. ATV (9 mg/kg) caused a significant increase on gray tone variation of over 48 percent (118.3 ± 12.0 gray tones) when compared to saline (79.8 ± 6.2 gray tones), indicating greater radiographic density. These data were corroborated by macroscopic findings, where ATV (9 mg/kg) reduced alveolar bone loss by over 47 percent (p<0.05), when compared to the group of untreated animals (saline). In summary, ATV was able to prevent alveolar bone loss seen on a ligature-induced periodontitis model.
RESUMO
O objetivo deste estudo foi avaliar o efeito da Atorvastatina (ATV) na perda óssea alveolar induzida em ratos. A periodontite foi induzida através da colocação de ligadura ao redor do segundo molar superior esquerdo de um total de 24 ratos Wistar machos (± 200 g). Grupos de 6 animais receberam por via oral solução Salina a 0,9 por cento ou Atorvastatina (1, 3 e 9 mg/kg), por 11 dias, quando então foram sacrificados e suas maxilas foram removidas, dissecadas, radiografadas através do Sistema Digora System®, e fotografados usando câmara digital. Os dados foram expressos como média ± EPM (ANOVA e teste de Bonferroni). Atorvastatina (9 mg/kg) causou aumento significante de aproximadamente 48 por cento na variação de tons de cinza (ATV 9=118,3 ± 12,0 tons de cinza), indicando maior densidade radiográfica, quando comparada ao controle (solução salina =79,8 ± 6,2 tons de cinza). Estes dados foram corroborados pelos achados macroscópicos, onde Atorvastatina (9 mg/kg) reduziu a perda óssea alveolar em 47 por cento (p<0,05), quando comparado aos animais não tratados (solução salina). Em suma, a Atorvastatina preveniu a perda óssea alveolar vista no modelo de periodontite induzida por ligadura.
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Full text: Available Index: LILACS (Americas) Main subject: Periodontitis / Pyrroles / Bone Density / Alveolar Bone Loss / Hydroxymethylglutaryl-CoA Reductase Inhibitors / Heptanoic Acids Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Ceará/BR

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Full text: Available Index: LILACS (Americas) Main subject: Periodontitis / Pyrroles / Bone Density / Alveolar Bone Loss / Hydroxymethylglutaryl-CoA Reductase Inhibitors / Heptanoic Acids Type of study: Etiology study / Prognostic study Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Ceará/BR