Journals / Turkish Journal of Hematology / 2009 / Cilt: 26 - Sayı: 4

Megaloblastik anemide nitrik oksit düzeyleri

The levels of nitric oxide in megaloblastic anemia

Pages
197–200
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

This study suggested that abnormalities in the nitric oxide levels in megaloblastic anemia are restored by vitamin B12 replacement therapy.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: The purpose of this study was to investigate the relationship between nitric oxide degradation products (nitrate and nitrite) levels and megaloblastic anemia which is treated with cyalocobalamin.
📊
Key Findings & Data:Materials and Methods: A total of 30 patients with megaloblastic anemia (16 Male, 14 Female) were included in the study.
💡
Conclusion & Impact:This study suggested that abnormalities in the nitric oxide levels in megaloblastic anemia are restored by vitamin B12 replacement therapy.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Anemi · megaloblastik · Vitamin B 12

Abstract

Objective: The purpose of this study was to investigate the relationship between nitric oxide degradation products (nitrate and nitrite) levels and megaloblastic anemia which is treated with cyalocobalamin. Materials and Methods: A total of 30 patients with megaloblastic anemia (16 Male, 14 Female) were included in the study. Cyanocobalamin was administered (1.000 &#956;g/day intramuscularly) until the reticulocyte crisis occurred to the normal range. The control group consisted of 30 healthy subjects (15 Male, 15 Female). Nitric oxide levels were measured before treatment and compared with the values obtained during peak reticulocyte count. Results: Plasma direct nitrite, total nitrite and nitrate levels were 24,86±3,87, 60.56±7,01 and 36,02±5,24 in before treatment versus 15,48±3,05, 38,92±6,44 and 22,77±6,04 &#956;mol/dl in after treatment, respectively. Plasma direct nitrite, total nitrite and nitrate levels were significantly lower in after treatment compared with the before treatment (p<0.001). Conclusion: Nitric oxide levels are seen to increase in megaloblastic anemia. This study suggested that abnormalities in the nitric oxide levels in megaloblastic anemia are restored by vitamin B12 replacement therapy.

Özet

Amaç: Bu çalışmada siyanokobalamin ile tedavi edilen megaloblastik anemi ile nitrik asit degranülasyon ürünleri olan nitrat ve nitrit arasındaki ilişki araştırıldı. Yöntem ve Gereçler: Çalışmaya 16’sı erkek, 14’ü kadın olan toplam 30 megaloblastik anemili hasta alındı. Hastalara retikü losit krizi görülene kadar 1.000 μg/gün dozunda siyanokobalamin intramüsküler olarak uygulandı. Kontrol grubu tamamen sağlıklı 15’i erkek, 15’i kadın toplam 30 kişiden oluşturuldu. Nitrik oksit düzeyleri tedavi öncesinde ölçüldü ve retikülosit sayısının en yüksek seviyesinde tekrar ölçülerek karşılaştırıldı. Bulgular: Tedavi öncesindeki ortalama plazma direk nitrit seviyesi μmol/dl olarak 24,86±3,87, total nitrit 60,56±7,01 ve nitrat 36,02±5,24 bulundu. Buna karşılık kontrol grubunda sırasıyla 15,48±3,05, 38,92±4,42 ve 22,77±6,04 bulundu. Tedavi sonrası plazma direk nitrit, total nitrit ve nitrat seviyesinin tedavi öncesine göre istatistiksel olarak anlamlı derecede azaldığı tespit edildi (p<0.001). Sonuç: Nitrik oksit düzeyleri megaloblastik anemide artmaktadır. Bu çalışma megaloblastik anemide nitrik oksit düzeylerin- deki anormalliklerin B12 replasman tedavisi ile düzeldiğini ortaya koymaktadır.

🔖

Cite This Article

ERKURT, M. A., AYDOĞDU, İ., BAYRAKTAR, N., KUKU, İ., KAYA, E. (2009). Megaloblastik anemide nitrik oksit düzeyleri. Turkish Journal of Hematology, Cilt: 26 - Sayı: 4, 197–200. https://ajindex.com/articles/413011

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (16)

  1. Banerjee RV, Matthews RG. Cobalamin-dependent methionine synthase. FASEB J 1990;4:1450-9
  2. Ludwig ML, Matthews RG. Structure-based perspectives on B12-dependent enzymes. Annu Rev Biochem 1997;66:269-313
  3. Rosenblatt DS, Cooper BA, Lue-Shing S, Wong PW, Berlow S, Narisawa K, Baumgartner RJ. Folate distribution in cultured human cells. Studies on 5,10-CH2-H4PteGlu reductase deficiency. Clin Invest 1979;63:1019-25
  4. Danishpajooh IO, Gudi T, Chen Y, Kharitonov VG, Sharma VS, Boss GR. Nitric oxide inhibits methionine synthase activity in vivo and disrupts carbon flow through the folate pathway. J Biol Chem 2001;276:27296-303
  5. Lloyd-Jones DM, Bloch KD. The vascular biology of nitric oxide and its role in atherogenesis. Annu. Rev. Med 1996;47:365-75
  6. Brouwer M, Chamulitrat W, Ferruzzi G, Sauls DL, Weinberg JB. Nitric oxide interactions with cobalamins: Biochemical and functional consequences. Blood 1996;88:1857-64
  7. Nicolaou A, Warefield CJ, Kenyon SH, Gibbons WA. The inactivation of methionine synthase in isolated rat hepatocytes by sodium nitroprusside. Eur J. Biochem 1997;244:876-82
  8. Nicolaou A, Kenyon SH, Gibbons JM, Ast T, Gibbons WA. In vitro inactivation of mammalian methionine synthase by nitric oxide. Eur J Clin Invest 1996;26:167-70
  9. Stamler JS. Redox signaling: nitrosylation and related target interactions of nitric oxide. Cell 1994;78:931-6
  10. Moro MA, Russell RJ, Cellek S, Lizasoain I, Su Y, Darley-Usmar VM, Radomski MW, Moncada. cGMP mediates the vascular and platelet actions of nitric oxide: confirmation using an inhibitor of the soluble guanylyl cyclase. S Proc Natl Acad Sci U. S. A. 1996;93:1480-5
  11. Traylor TG, Sharma VS. Why NO?. Biochemistry 1992;31:2847-9
  12. Pradhan P. Malarial anaemia and nitric oxide induced megaloblastic anaemia: a review on the causes of malarial anaemia. J Vector Borne Dis 2009;46:100-8
  13. Odemis E, Koca C, Karadag A, Catal F, Aydin M, Turkay S, Yigitoglu R. Nitric oxide affects serum ferritin levels in children with iron deficiency. Pediatr Hematol Oncol 2007;24:189-94
  14. Chung IJ, Lee JJ, Nam CE, Kim HN, Kim YK, Park MR, Cho SH, Kim HJ. Increased inducible nitric oxide synthase expression and nitric oxide concentration in patients with aplastic anemia. Ann Hematol 2003;82:104-8
  15. Bayraktar N, Erkurt MA, Aydoğdu I, Başaran Y. The levels of nitric oxide in beta-thalassemia minor. Turkish Journal Of Hematology 2008;25:187-9
  16. Eberhardt RT, McMahon L, Duffy SJ, Steinberg MH, Perrine S