Journals / Perinatoloji Dergisi / 2006 / Cilt: 14 - Sayı: 2

Comparison of the effect of single and repeated of corticosteroids on fetal lung maturation and brain growth pregnant rats

Gebe rat fetüslerinde tek ve tekrarlanan doz kortikosteroid kullanımının akciğer matürasyonu ve beyin gelişimi üzerine etkileri

Pages
59–65
DOI
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⚡ TL;DR(Too Long; Didn't Read)

Conclusion : Administration of repeated courses of corticosteroids did not cause any significant differences in birth and brain weights,but causes maturation in lungs in comparison with one dose.

📌 3 Key Takeaways

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Objective & Hypothesis:Methods : Forty two Sprague-Dawley rats were divided into 6 groups.Mature and premature pregnant rats were given intramuscular betamethasone (0.5 mg/kg) at 16 or at 16-18 days of gestation.Controls (mature and premature rats) received equivalent volumes of sterile normal saline.Rats were delivered at 19 (preterm) and 22 (term) days.After cesarean delivery,we measured birth weight,length,head circumference,weight of whole brain,maximal cerebral anterior-posterior length and evaluated the lungs histopathologically.
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Key Findings & Data:Results : There were no significant differences in birth weight and whole brain weights between the premature rats receiving one dose and repeated doses of corticosteroid.Lung maturation in premature rats revealed 71.4% glandular stage in the rats receiving one dose of corticosteroid where as 42.9% glandular stage and 42.9% canalicular stage in rats receiving multiple courses.
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Conclusion & Impact:Conclusion : Administration of repeated courses of corticosteroids did not cause any significant differences in birth and brain weights,but causes maturation in lungs in comparison with one dose.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Fetal gelişim · Sıçan · Sprague-Dawley

Abstract

Methods : Forty two Sprague-Dawley rats were divided into 6 groups.Mature and premature pregnant rats were given intramuscular betamethasone (0.5 mg/kg) at 16 or at 16-18 days of gestation.Controls (mature and premature rats) received equivalent volumes of sterile normal saline.Rats were delivered at 19 (preterm) and 22 (term) days.After cesarean delivery,we measured birth weight,length,head circumference,weight of whole brain,maximal cerebral anterior-posterior length and evaluated the lungs histopathologically. Results : There were no significant differences in birth weight and whole brain weights between the premature rats receiving one dose and repeated doses of corticosteroid.Lung maturation in premature rats revealed 71.4% glandular stage in the rats receiving one dose of corticosteroid where as 42.9% glandular stage and 42.9% canalicular stage in rats receiving multiple courses. Conclusion : Administration of repeated courses of corticosteroids did not cause any significant differences in birth and brain weights,but causes maturation in lungs in comparison with one dose.

Özet

Amaç: Tek ve tekrarlanan doz kortikosteroidlerin fetal akciğer matürasyonu, doğum ağırlığı, baş çevresi ve beyin gelişimi üzerine olan etkilerinin karşılaştırılması. Yöntem: Kırk-iki tane Sprague-Dawley cinsi rat 6 gruba ayrıldı. Gebe ratlara gebeliğin 16, 17 ve 18. günlerinde intramuskuler betametason (0.5mg/kg) ve kontrol grubuna da salin solüsyonu verildi. Ratlar 19. gün (preterm) ve 22. gün (term) olarak doğurtuldu. Sezeryanla doğumu takiben doğum ağırlıkları, boy uzunlukları, baş çevreleri, tüm beyin ağırlıkları, tüm beyin en uzun ön-arka çapı ve beyin genişliklerinin ölçümü yapıldı. Histopatolojik olarak akciğer matürasyonu değerlendirildi. Bulgular: Preterm kontrol grubu, tek doz kortikosteroid alan grup ve tekrarlanan doz kortikosteroid alan gruplar arasında doğum kilosu, boy uzunluğu, baş çevresi ve tüm beyin ağırlığı açısından anlamlı fark bulunmadı (p > 0.05). Pretermlerde histopatolojik olarak tek doz kortikosteroid verilen grupta akciğer matürasyon evresi %71.4 glandüler evre, %28.6 glandüler-kanaliküler evre, tekrarlanan doz kortikosteroid alan grupta %42.9 glandüler evre, %42.9 kanaliküler evre olarak bulundu. Sonuç: Gebe ratlarda tekrarlanan dozlarda kortikosteroid kullanımı fetal doğum ve beyin ağırlığında tek doza göre farklılık yaratmamakta ancak akciğer matürasyonunda ilerlemeye yol açmaktadır.

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Cite This Article

KAFKASLI, A., ÜSTÜN, Y. E., BOZ, M., KARADAĞ, N. (2006). Comparison of the effect of single and repeated of corticosteroids on fetal lung maturation and brain growth pregnant rats. Perinatoloji Dergisi, Cilt: 14 - Sayı: 2, 59–65. https://ajindex.com/articles/340558

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References (9)

  1. NIH Consensus Development Panel on the Effect of Corticosteroids for Fetal Maturation on Perinatal Outcomes. Effect of corticosteroids for fetal maturation on perinatal outcomes. J Am Med Assoc 1995; 273: 413-18
  2. Uno H, Lohmiller L, Thieme C, Kemnitx JW, Engle MJ, Rocker EB et al. Brain damage induced by prenatal exposure to dexamethasone in fetal rhesus macaques. I: hippocampus. Dev Brain Res 1990; 53: 157-67
  3. Quinlivan JA, Archer MA, Dunlop SA, Evans SF, Beazley LD, Newnham JP. Fetal growth retardation, particularly within lymphoid organs, following repeated maternal injections of betamethasone in sheep. J Obstet Gynecol Res 1998; 24: 173-82
  4. French NP, Evans SF, Godfrey KF, Newnham JP. Repeated antenatal corticosteroids: size at birth and subsequent development. Am J Obstet Gynecol 1999; 180: 114-121
  5. Bennet L, Kozuma S, McGarrigle HH, Hanson MA. Temporal changes in fetal and cardiovascular, behavioural, metabolic and endocrine responses to maternally administered dexamethasone in the late gestation sheep. Br J Obstet Gynaecol 1999; 106: 331-339
  6. Scheepens A, van de Waarenburg M, van den Hove D, Blanco CE. A single course of prenatal betamethasone in the rat alters postnatal brain cell proliferation but not apoptosis. J Physiol 2003; 552: 163-75
  7. Sloboda DM, Newnham JP, Challis JRG. Effects of repeated maternal betamethasone administration on growth and hypothalamic-pituitary-adrenal function of the ovine fetus at term. J Endocrinol 2000; 165: 79-91
  8. Noel P, French MB, Ronald Hagan MB. Repeated antenatal corticosteroids: Size at birth and subsequent development. Am J Obstet Gynecol 1999; 180: 114-21
  9. Stephen T, Vermillion MD, David E, Soper MD, Roger B, Newman MD. Neonatal sepsis and death after multiple courses of antenatal betamethasone therapy. Am J Obstet Gynecol 2000; 183: 810-4.