Publication: Hiperparatiroidizmin Sağlıklı ve Hastalıklı Periodonsiyuma Etkisinin İncelenmesi (Deneysel Çalışma)
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Çalısmamızda, diyete baglı olarak olusan sekonder hiperparatiroidizm'in (SHPT) hem periodontal saglıklı hem de periodontitisli periodonsiyuma etkisi, diseti proinflamatuvar sitokin seviyeleri karsılastırılarak ve histopatolojik/histometrik incelemeler yapılarak degerlendirildi. Kırksekiz adet Sprague Dawley sıçan rastgele 2 gruba ayrıldı ve grupların birisinde diyetle SHPT olusturuldu. Bunu takiben, her iki grupta sag mandibular molar bölgelerde lokal endotoksin enjeksiyonu ile deneysel periodontitis olusturuldu. Bu sekilde; HPT+endotoksin uygulanmayan (Grup 1), HPT+endotoksin uygulanan (Grup 2), sistemik saglıklı+endotoksin uygulanan (Grup 3) ve sistemik saglıklı+endotoksin uygulanmayan (Grup 4) olmak üzere 4 çalısma grubunun her birinde 12 sıçanda diseti IL-1b ve TNF-a seviyeleri ELISA yöntemiyle belirlenirken, diger 12 sıçanda da histopatolojik / histometrik incelemeler yapıldı. IL-1b ve TNF-a seviyeleri en fazla Grup 2'de daha sonra sırasıyla çoktan aza dogru Grup 3, 1 ve 4'te bulundu ve bu farkların istatistiksel olarak anlamlı oldugu belirlendi (p< 0.05). Histopatolojik olarak Grup 1 ile 4 karsılastırıldıgında, periodonsiyumda inflamatuvar infiltrasyonun Grup 1'de arttıgı görüldü. Histometrik ölçümlerde periodontal atasman kaybı ve alveoler kemik yıkım miktarları kıyaslandıgında Grup 1 ve 4 arasında anlamlı bir fark olmadıgı (p>0.05), Grup 1 ve 4'ün Grup 2 ve 3'ten düsük, Grup 2'nin ise 3'ten yüksek oldugu belirlendi ve bu farklar istatistiksel olarak anlamlı bulundu (p<0.05). Bulgularımız, diyete baglı SHPT'in periodontal hastalıga yatkınlıkta ve hastalık aktivitesinde etkili olabilecegini ve hastalık siddetini arttırıcı bir faktör olarak degerlendirilebilecegini göstermektedir.
In our study, the influence of dietary induced secondary hyperparathyroidism (SHPT) on healthy and diseased periodontium was evaluated by comparing gingival proinflammatory cytokine levels and by histopathological/histometrical means. Fortyeight Sprague Dawley rats were randomly divided in to 2 groups and dietary induced SHPT was created in one of the groups. Afterwards, experimental periodontitis was induced in the right mandibular molar regions of all animals by local endotoxin injection. Thus; in each of the 4 study groups composed as HPT+endotoxin not injected (Group 1), HPT+endotoxin injected (Group 2), systemically healthy+endotoxin injected (Group 3) and systemically healthy+endotoxin not injected (Group 4), gingival IL-1b ve TNF-a levels were determined by ELISA in 12 rats as well as performing histopathological/histometrical examinations in the other 12 rats. The IL-1b ve TNF-a levels were highest in Group 2 and then in Groups 3, 1 and 4 respectively and these differences were statistically significant (p<0.05). Histopathologically, more inflammatory infiltration was observed in Group 1 than that in Group 4. In histometrical measurements there were no differences between Groups 1 and 4 by means of periodontal attachment loss (AL) and alveolar bone resorption (AR) (p>0.05). The amounts of AL and AR were lower in Groups 1 and 4 than in Groups 2 and 3, but the amounts of AL and AR were higher in Group 2 than those of Group 3. All these differences were statistically significant (p<0.05). Our results reveal that dietary induced SHPT may be effective on periodontal disease susceptibility and activity and it may be evaluated as an increasing factor of periodontal disease severity.
In our study, the influence of dietary induced secondary hyperparathyroidism (SHPT) on healthy and diseased periodontium was evaluated by comparing gingival proinflammatory cytokine levels and by histopathological/histometrical means. Fortyeight Sprague Dawley rats were randomly divided in to 2 groups and dietary induced SHPT was created in one of the groups. Afterwards, experimental periodontitis was induced in the right mandibular molar regions of all animals by local endotoxin injection. Thus; in each of the 4 study groups composed as HPT+endotoxin not injected (Group 1), HPT+endotoxin injected (Group 2), systemically healthy+endotoxin injected (Group 3) and systemically healthy+endotoxin not injected (Group 4), gingival IL-1b ve TNF-a levels were determined by ELISA in 12 rats as well as performing histopathological/histometrical examinations in the other 12 rats. The IL-1b ve TNF-a levels were highest in Group 2 and then in Groups 3, 1 and 4 respectively and these differences were statistically significant (p<0.05). Histopathologically, more inflammatory infiltration was observed in Group 1 than that in Group 4. In histometrical measurements there were no differences between Groups 1 and 4 by means of periodontal attachment loss (AL) and alveolar bone resorption (AR) (p>0.05). The amounts of AL and AR were lower in Groups 1 and 4 than in Groups 2 and 3, but the amounts of AL and AR were higher in Group 2 than those of Group 3. All these differences were statistically significant (p<0.05). Our results reveal that dietary induced SHPT may be effective on periodontal disease susceptibility and activity and it may be evaluated as an increasing factor of periodontal disease severity.
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Tez (doktora) -- Ondokuz Mayıs Üniversitesi, 2007
Libra Kayıt No: 14576
Libra Kayıt No: 14576
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87
