Journals / Turkish Journal of Gastroenterology / 2002 / Cilt: 13 - Sayı: 2

Peritonda adezyon oluşumuna metilen mavisinin etkisi

The effect of methylene blue on peritoneal adhesion formation

Pages
108–111
DOI
—
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AI Insight
⚡ TL;DR(Too Long; Didn't Read)

As allopurinol also provokes adhesion formation, it is thought that the preventive role of methylene blue may not be due to its free oxygen radical inhibitor effect but the mechanism has yet to be clarified

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: Postoperative adhesions following abdominopelvic surgery may cause significant morbidity.
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Key Findings & Data:Methods: Seventy five male Wistar-Albino rats weighing 200g-220g. were divided into five groups of 15 rats each.
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Conclusion & Impact:As allopurinol also provokes adhesion formation, it is thought that the preventive role of methylene blue may not be due to its free oxygen radical inhibitor effect but the mechanism has yet to be clarified
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Doz-yanıt ilişkisi · ilaç · Ameliyat sonrası komplikasyonlar

Abstract

Background/aims: Postoperative adhesions following abdominopelvic surgery may cause significant morbidity. In this study, the effect of different doses of methylene blue in the formation of adhesions and the role of allopurinol in revealing the possible mechanism of action was evaluated. Methods: Seventy five male Wistar-Albino rats weighing 200g-220g. were divided into five groups of 15 rats each. After laparotomy, cecal serosal abrasions were performed. In Group I, 1ml of saline was administered intraperitoneally, while Group II, llI and lV were given Img/kg, 5mg/kg and 9mg/kg of intraperitoneal methylene blue respectively. In Group V after 1 ml of saline administration at surgery, allopurinol 30 mg/kg/ day was adminis-tered postoperatively for 14 days. On day 14, laparotomies were repeated. Adhesions were graded and tissue samples were taken from incisions and adhesions. Hydroxyproline contents representing adhesions were measured quantitatively. Results: Low dose methylene blue (Group II) caused inhibition of adhesion formation when compared with that of other groups (p<0.05). With a higher dose (Group III), this effect disappeared and methylene blue actually induced adhesion formation (p<0.05) at the highest dose (Group IV). Allopurinol treatment (Group V) also provoked adhesion formation when compared with Group I (p<0.05). Conclusions: Methylene blue has diverse effects on postoperative adhesions in a dose-dependent manner. While with low doses there is evidence of inhibition, it promotes adhesion formation at higher doses. As allopurinol also provokes adhesion formation, it is thought that the preventive role of methylene blue may not be due to its free oxygen radical inhibitor effect but the mechanism has yet to be clarified

Özet

Amaç: Abdominopelvik cerrahi sonrası gelişen adezyonlar büyük morbidite nedeni olabilir. Bu çalışmada adezyon oluşumunda metilen mavisinin çeşitli dozlarının etkisi ve olası mekanizmayı açıklamada allopurinolün rolü araştırılmıştır. Yöntem: 200-220 gr ağırlığında 75 erkek Wistar-albino rat her birinde 15 ratin bulunduğu 5 gruba ayrılmıştır. Laparatomi sonrası çekal serozal abrazyon oluşturularak I. ve V. Gruba 1 ml serum fizyolojik II, III ve IV. Gruba sırasıyla Imgr/kg, S5mgr/kg ve 9mgr/kg metilen mavisi intraperitoneal olarak verilmiştir. V. Grup ayrıca 14 gün süreyle 30 mgr/kg/g allopurinol almıştır. Ondördüncü gün relaparatomi yapılarak adezyonlar sınıflandırılmıştır. İnsizyon ve adezyonlardan doku örnekleri alınarak kantitatif ölçüm amacıyla hidroksiprolin düzeylerine bakılmıştır. Bulgular: Düşük doz metilen mavisi (Grup II) diğer gruplara göre adezyon oluşumunu önlemektedir (P<0.05). III. grupta bu etki ortadan kalkmakta hatta metilen mavisi adezyon oluşumunu en yüksek dozda (Grup IV) arttırmaktadır. Allopurinol alımı (Grup V) I. Grupla karşılaştırıldığında adezyon oluşumunu provoke etmektedir (P<0.05). Sonuç: Metilen mavisi doza bağımlı olarak postoperatif adezyonlarda farklı etki göstermektedir. Düşük dozlarda adezyon oluşumunu inhibe etmekte, yüksek dozlarda ise arttırmaktadır. Allopurinolün adezyon oluşumunu arttırması nedeniyle metilen mavisinin koruyucu etkisinin bu maddenin serbest oksijen radikallerini azaltıcı etkisine bağlı olmadığı düşünülmüş ancak mekanizma aydınlatılamamıştır.

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Cite This Article

RAŞA, K., ERVERDİ, N., KARABULUT, Z., RENDA, N., KORKMAZ, A. (2002). Peritonda adezyon oluşumuna metilen mavisinin etkisi. Turkish Journal of Gastroenterology, Cilt: 13 - Sayı: 2, 108–111. https://ajindex.com/articles/411387

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