Journals / Çocuk Cerrahisi Dergisi / 2008 / Cilt: 22 - Sayı: 1

The effect of inhibition of high group box-1 and tumor necrosis factor alpha on intestinal morphology and motility in rats with peritonitis

Peritonit oluşturulan sıçanlarda high mobility group box-1 ve tümör nekroz faktör-alfa inhibisyonunun barsak morfolojisi ve motilite üzerine etkisi

Pages
15–24
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

More studies to explain the mechanisms allow the inhibition of these cytokines could use the treatment in the future.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: In this experimental study; the role of tumor necrosis factor alpha (TNF-a) which early mediator and high mobility group box-1 (HMG-1) which late mediator of the inflammation in the pathophysiology of the ileus and the effects of inhibition of this mediators were investigated on intestinal morphology and motility during peritonitis.
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Key Findings & Data:Etanercept (8 mg/kg.) was appied via intraperitoneal (IP) injection in the etanercept group on the time of one and four hours after peritonitis.
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Conclusion & Impact:More studies to explain the mechanisms allow the inhibition of these cytokines could use the treatment in the future.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Gastrointestinal motilite · HMGB1 protein · Modeller

Abstract

Aim: In this experimental study; the role of tumor necrosis factor alpha (TNF-a) which early mediator and high mobility group box-1 (HMG-1) which late mediator of the inflammation in the pathophysiology of the ileus and the effects of inhibition of this mediators were investigated on intestinal morphology and motility during peritonitis. Materials and Methods: The rats were assigned four groups including eigth rat. While laparatomy was performed the control group only, cecal ligation and puncture was performed in the peritonitis after laparatomy. Etanercept (8 mg/kg.) was appied via intraperitoneal (IP) injection in the etanercept group on the time of one and four hours after peritonitis. Etylpurivate was applied IP in fourth group on the time of 12 and 24 hours after peritonitis.Thirty six hours later, tissue malondialdehyde and myeloperoxidase levels were measured in the ileal samples and TNF-a lewels were measured in the blood. In the histopathological evaluation; Chiu scor and semicantitative scor were used for ileal injury by light microscope. The ileal contractions were evaluated with electical field stimulation, potatium chlorur and carbacahol (CCh) in the organ bath. Results: TNF-a levels that increased in the peritonitis group were significantly reduced in the etanercept group. Tissue MDA and MPO levels were reduced both etanercept and etylpurivate groups. It has been deternined that peritonitis caused seriosly inflammation and the tissue injury on the intestine and etanercept and etylpurivate applying significantly reduced this changes. When the electrical stimulation was given on the ileal samples, contractions were increased in the etanercept group. The contractions of the ileal samples were improved in the etylpurivate group with KCl, and in the etanercept group with cumulative CCh. Conclusions: TNF-a and HMGB-1 have an important role on the intestinal injury and reduced motility with peritonitis. These data shown that both cytokine have effect by different mechanisms and path ways in this process. More studies to explain the mechanisms allow the inhibition of these cytokines could use the treatment in the future.

Özet

Amaç: Bu deneysel çalışmada, peritonitte gelişen ileusun fizyopatolojisinde inflamasyonun erken medyatörü Tümör Nekrozis Faktör-a (TNF-a) ve geç medyatörü High Mobility Group Box-1 (HMGB-l)'ın rolü ve bu medyatörlerin inhibisy onunun barsak morfolojisi ve motilitesi üzerine etkileri araştırılmıştır. Gereç ve yöntem: Çalışmada her birinde 8 Wistar Albino cinsi erişkin sıçan içeren 4 grup oluşturuldu. Kontrol grubuna laparatomi, peritonit grubuna laparatomi sonrası, çekum ligasyonu ve perforasyonu uygulandı. Etanercept grubuna peritonit oluşturulduktan 1 ve 4 saat sonra intra-peritoneal (i.p.) 8 mglkgldoz etanercept uygulandı. Etil pirüvat grubuna ise peritonitten 12 ve 24 saat sonra i.p. 40 mglkgldoz etil pirüvat uygulandı. Hayvanlardan 36 saat sonra alınan ileum örneklerinde biyokimyasal incelemelerle doku malondialdehit (MDA) ve myeloperoksidaz (MPO) düzeyleri, kan örneklerinde TNF-a düzeyleri ölçüldü. Histopatolojik incelemelerde ışık mikroskobu ile ileum duvarındaki hasar Chiu skor laması ve semikantitatif skorlama-ile değerlendirildi. Organ banyosu ile ileumun elektriksel uyarı, potasyum klorür (KCl) ve karbakole (CCh) verdiği kasılma yanıtları incelendi. Bulgular: Peritonitte artan serum TNF-a düzeylerinin etanercept grubunda, doku MDA ve MPO seviyelerinin hem etanercept hem de etil pirüvat gruplarında önemli ölçüde azaldığı saptandı. Histopatolojik değerlendirmede peritonitin barsak duvarında ciddi hasara ve inflamatuvar değişikliklere yol açtığı, etanercept ve etilpürivat uygulamasının peritonitin neden olduğu bu hasarı anlamlı şekilde azalttığı saptandı. Organ banyosunda ileal dokulara elektriksel uyarı verildiğinde etanercept grubunda kasılma yanıtlarının güçlendiği görüldü. Yüksek doz KCl'e verilen kasılma yanıtlarının etil pirüvat grubunda, kümülatif CCh uygulamasına verilen kasılma yanıtlarının ise etanercept grubunda düzeldiği izlendi. Sonuç: Peritonitte ortaya çıkan ileusun nedeni olan barsak doku hasarı ve bozulan motilite değişiklikliklerinde inflamasyonun iki ana mediatörü olan TNF-a ve HMGB-1 önemli bir role sahiptir. Bulgular her iki sitokinin değişik yolaklar ve mekanizmalar üzerinden etkili olduğunu göstermektedir. Bu mekanizmaları açıklamaya yönelik yapılacak çalışmalar bu sitokinlerin inhibisy onunun gelecekte tedavide kullanılabilmesine imkan sağlayacaktır.

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Cite This Article

AY, T. B., AVLAN, D., POLAT, A., TAMER, L., BÜYÜKAFŞAR, K., AKSÖYEK, S. (2008). The effect of inhibition of high group box-1 and tumor necrosis factor alpha on intestinal morphology and motility in rats with peritonitis. Çocuk Cerrahisi Dergisi, Cilt: 22 - Sayı: 1, 15–24. https://ajindex.com/articles/157672

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