Fluoxetine reduces periodontal disease progression in a conditioned fear stress model in rats

2013 ◽  
Vol 48 (5) ◽  
pp. 632-637 ◽  
Author(s):  
J. C. A. Aguiar ◽  
E. P. P. Gomes ◽  
T. Fonseca-Silva ◽  
N. A. Velloso ◽  
L. T. Vieira ◽  
...  
Keyword(s):  
Periodontal Disease ◽  
Disease Progression ◽  
Conditioned Fear ◽  
Stress Model ◽  
Conditioned Fear Stress

Asenapine reduces anxiety-related behaviours in rat conditioned fear stress model

2016 ◽  
Vol 28 (6) ◽  
pp. 327-336 ◽  
Author(s):  
Masayo Ohyama ◽  
Maho Kondo ◽  
Miki Yamauchi ◽  
Taiichiro Imanishi ◽  
Tsukasa Koyama
Keyword(s):  
Receptor Antagonist ◽  
Partial Agonist ◽  
Conditioned Fear ◽  
Serotonin Release ◽  
Rat Hippocampus ◽  
Stress Model ◽  
Electrical Shock ◽  
Conditioned Fear Stress ◽  
Skinner Box

ObjectiveAsenapine is an atypical antipsychotic that is currently available for the treatment of schizophrenia and bipolar I disorder. Although the atypical antipsychotics clozapine and olanzapine are effective for depression and anxiety in schizophrenia, as demonstrated by animal model studies, this has not been clarified for asenapine. Therefore, we compared the effects of asenapine in the conditioned fear stress model with those of clozapine and olanzapine.MethodRats were individually fear conditioned using electrical foot shock in a Skinner box. Approximately 24 h later, individual animals were returned to the same Skinner box (without electrical shock) and their freezing behaviour was observed for 5 min. Animals were treated with asenapine, clozapine, olanzapine, the 5-HT1A receptor partial agonist buspirone, or the 5-HT2C receptor antagonist SB242084 at 30 min before freezing behaviour assessment. The 5-HT1A receptor antagonist WAY100635 or the 5-HT2C receptor agonist Ro60-0175 was also used concomitantly with asenapine. The effects of asenapine, clozapine, and olanzapine on serotonin release in the rat hippocampus were also measured using in vivo microdialysis.ResultsAsenapine reduced freezing behaviour, while neither clozapine nor olanzapine reduced freezing behaviour. Buspirone and SB242084 also reduced freezing behaviour. The effect of asenapine in reducing freezing behaviour was not altered by the concomitant administration of WAY100635 or Ro60-0175. Both asenapine and clozapine, but not olanzapine, increased serotonin release in the rat hippocampus.ConclusionAsenapine may have superior therapeutic effect on anxiety symptoms than other agents, although the underlying mechanism of its anxiolytic activity remains unknown.

Regenereation in periodontics

2018 ◽  
Author(s):  
Murtaza Kaderi ◽  
Mohsin Ali ◽  
Alfiya Ali ◽  
Tasneem Kaderi
Keyword(s):  
Tissue Engineering ◽  
Clinical Practice ◽  
Periodontal Disease ◽  
Disease Progression ◽  
Tissue Regeneration ◽  
Surgical Procedures ◽  
Periodontal Regeneration ◽  
Guided Tissue Regeneration ◽  
Periodontal Tissues ◽  
Extensive Documentation

The goals of periodontal therapy are to arrest of periodontal disease progression and to attain the regeneration of the periodontal apparatus. Osseous grafting and Guided tissue regeneration (GTR) are the two techniques with the most extensive documentation of periodontal regeneration. However, these techniques offer limited potential towards regenerating the periodontal tissues. Recent surgical procedures and application of newer materials aim at greater and more predictable regeneration with the concept of tissue engineering for enhanced periodontal regeneration and functional attachment have been developed, analyzed, and employed in clinical practice

Association of ALDH2 Genotypes with Periodontitis Progression

2009 ◽  
Vol 89 (2) ◽  
pp. 138-142 ◽  
Author(s):  
N. Nishida ◽  
M. Tanaka ◽  
S. Sekine ◽  
T. Takeshita ◽  
K. Nakayama ◽  
...  
Keyword(s):  
Alcohol Consumption ◽  
Periodontal Disease ◽  
Disease Progression ◽  
Odds Ratio ◽  
Alcohol Sensitivity ◽  
Pocket Depth ◽  
Probing Pocket Depth ◽  
Significant Odds Ratio ◽  
Progression Risk ◽  
Prospective Association

The progression of periodontitis may be affected by ALDH2 genotypes with respect to the oxidation of acetaldehyde to acetate, which leads to the accumulation of acetaldehyde in plasma and potential toxic effects. We examined the prospective association of ALDH2 genotypes in terms of alcohol sensitivity between alcohol consumption and periodontal disease progression. In 2003, 224 of 256 (87.5%) individuals examined at baseline (1999) completed probing pocket depth measurements for the evaluation of periodontitis progression. Missing data on self-reported questionnaires and blood samples were excluded; therefore, 183 samples were analyzed. Individuals who consumed ≥ 33.0 g/day of alcohol exhibited high periodontal disease progression risk (OR = 3.54). ALDH2 *1/*2 individuals who consumed ≥ 33 g/day of alcohol displayed a significant odds ratio (OR = 4.28) of periodontitis progression risk, in contrast to ALDH2 *1/*1 individuals. These results suggested that alcohol consumption as well as alcohol sensitivity may be a risk factor for periodontitis progression.

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