Journals / Uluslararası Hematoloji-Onkoloji Dergisi / 2007 / Cilt: 17 - Sayı: 4

Betaxolol decreases radiation induced acute and late effects of liver

Karaciğer ışınlamasına bağlı erken ve geç yan etkilerin önlenmesinde Betaksolol’ün yeri

Pages
220–227
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Half of the rats of each group was sacrified 8 hours after the second fraction for detection of acute effects and apoptosis, the remaining rats were sacrified 60 days after second fraction for detection of late effects

📌 3 Key Takeaways

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Objective & Hypothesis:The purpose of this study was to determine the role of betaxolol in the prevention of radiation induced acute and late toxicity of the liver.
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Key Findings & Data:Fifty-two female albino Wistar rats were divided into 4 groups.
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Conclusion & Impact:Half of the rats of each group was sacrified 8 hours after the second fraction for detection of acute effects and apoptosis, the remaining rats were sacrified 60 days after second fraction for detection of late effects
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Modeller · hayvan · Karaciğer

Abstract

The purpose of this study was to determine the role of betaxolol in the prevention of radiation induced acute and late toxicity of the liver. Fifty-two female albino Wistar rats were divided into 4 groups. The first group (n=18) was given a total of 20 Gy radiation to upper abdomen in two equal fractions with an interval of 3 days. Betaxolol HCl was administered (4 mg/kg, i.p.) 120 minutes before each fraction. Betaxolol was substituted for saline solution (%0.9 NaCl, i.p) in the second group (n=18). The third group (n=8) was not irradiated however saline solution was administered as the second group. The fourth group (n=8) was not irradiated but betaxolol HCl similar to others. Half of the rats of each group was sacrified 8 hours after the second fraction for detection of acute effects and apoptosis, the remaining rats were sacrified 60 days after second fraction for detection of late effects

Özet

Toplam 52 adet dişi albino Wistar sıçan 4 gruba ayrıldı. Birinci gruba (n=18) 3 gün arayla iki eşit fraksiyonda toplam 20 Gy üst batın bölgesine Cobalt-60 teleterapi cihazı kullanılarak ışınlama yapıldı. Her iki fraksiyondan 120 dakika önce ve diğer günlerde günde bir kez betaksolol HCl (4 mg/kg, i.p.) verildi. İkinci gruba (n=18) aynı işlemler betaksolol yerine %0.9 NaCl solusyonu (i.p.) ile yapıldı. Üçüncü gruba (n=8) diğer gruplarla eşzamanlı betaksolol 4 mg/kg (i.p.) uygulandı, ışınlama yapılmadı. Dördüncü gruba (n=8) diğer gruplarla eşzamanlı %0.9 NaCl solusyonu (i.p.) uygulandı, ışınlama yapılmadı.Her gruptaki sıçanların yarısı ikinci fraksiyondan 8 saat sonra erken etki incelemesi için, diğer yarısı ise ikinci fraksiyondan 60 gün sonra geç etki incelemesi için sakrifiye edildi. Erken ve geç etki değerlendirmesi için H&E boyama ile inceleme ve skorlama yapıldı. Betaksololün ışınlamaya bağlı erken etkileri azalttığı (p=0.0030) saptandı. Geç etkilerin incelemesinde sadece radyoterapi verilen sıçanlarda kontrol gruplarına göre belirgin olarak KC toksisitesi daha çok görüldü(p=0.047). Betaksolol, ışınlamaya bağlı geç etkilerin önlenmesinde etkili bulundu (p=0.015). Bu çalışmayla etkin Ca-kanal bloker özelliğe sahip betaksololün, radyoprotektif ajan olarak kullanılabileceği, karaciğerin radyasyon toleransını artırabileceği, deneysel çalışmalara klinik uygulamalara katkı sağlıyacağı sonucuna varıldı.

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Cite This Article

ÇETİN, B., YILDIRIM, B., YILDIZ, F., CENGİZ, M., SÖKMENSÜER, C., ATAHAN, İ. L. (2007). Betaxolol decreases radiation induced acute and late effects of liver. Uluslararası Hematoloji-Onkoloji Dergisi, Cilt: 17 - Sayı: 4, 220–227. https://ajindex.com/articles/323043

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References (18)

  1. Gunderson LL. Clinical Radiation Oncology ed: Philedelphia,Churchill-Livingston, 2000
  2. Feigen M. Radiation hepatitis following moving strip radiotherapy. Int J Radiat Oncol Biol Phys 9: 397-400, 1983
  3. Shulman HM. An analysis of hepatic VOD and hepatic degeneration following bone marrow transplantation. Gastroenterology 79: 1178- 1191, 1980
  4. Geraci JP, Mariano MS, Jackson KL. Radiation hepatology of the rat: microvascular fibrosis and enhancement of liver dysfunction by diet and drugs. Radiat Res 129: 322-332, 1992
  5. Geraci JP, Mariano MS, Jackson KL. Radiation hepatology of rat: Time dependent recovery. Radiat Res 136: 214-221, 1993
  6. Bessho H. Vascular effects of betaxolol, a cardioselective beta-adrenoceptor antagonist, in isolated rat arteries. Jpn J Pharmacol 55: 351-358, 1991
  7. Setoguchi M. Inhibitory action of betaxolol, a beta1-selective adrenoreceptor antagonist, on voltage dependent calciun channeles in guinapig artery and vein. Br J Pharmacol 115: 198- 202, 1995
  8. Yu DY. Effects of betaxolol, timolol and nimodipine on human and pig retinal arterioles. Exp Eye Res 67: 73-81,1998
  9. Seymour CB. High yields of lethal mutations in somatic mammalian cells that survive ionizing radiation. Int J Radiat Biol 50: 167-169, 1986
  10. Hoste AM. In vitro studies of the effects of _ adrenergic drugs on retinal and posterior ciliary microarteries. Surv Ophtalmol 43 S-1: S183- S190, 1999
  11. Meyn RE. Heterogeneity in the development apoptosis in irradiated tumours of different histologies. Int J Radiat Biol 64: 583-591, 1993
  12. Osborne NN. In vivo and in vitro experiments show that betaxolol is a retinal neuroprotective agent. Brain Res 751: 113-123, 1997
  13. Hirooka K. Suppressive actions of betaxolol on ionic currents in retinal ganglion cells may explain its neuroprotective effects. Exp Eye Res 70: 611-621, 2000
  14. Osborne NN. Topically applied betaxolol attenuates NMDA-induced toxicity to ganglion cells and the effects of ischaemia to the retina. Exp Eye Res 69: 331-342, 1999
  15. Kobayashi T. Ca channel antagonists and neuroprotection from cerebral ischemia. Eur J Pharmacol 363: 1-15, 1998
  16. Yu DY. Systemic and ocular vascular roles of the antiglaucoma agents beta adrenergic antagonists and Ca channel blockers. Surv Ophthalmol 43(S1): S124-S222, 1999
  17. Obrenovitch TP. Neuroprotective strategies: voltage-gated Na channel down modulation versus presynaptic release inhibition. Rev Neurosci 9: 203-211, 1998
  18. Carter AJ. The