Journals / Medical Network Klinik Bilimler ve Doktor / 2000 / Cilt: 6 - Sayı: 5

Effects of HRT on serum levels of IGF-1 in postmenopausal women

Postmenopozal hastalarda hormon replasman tedavisinin serum insülin benzeri büyüme faktörü-1 düzeylerine etkisi

Pages
664–668
DOI
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AI Summary & Key Takeaways

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

CONCLUSION: It is thought that basal levels of IGF-1 have impact on the increase of IGF-1 after HRT.

📌 3 Key Takeaways

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Objective & Hypothesis:OBJECTIVE: It is thought that insuline-like growth factor-1 (IGF-1) stimulates bone formation.
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Key Findings & Data:We aimed to determine the effect of oral and transdermal hormone replacement therapy (HRT) on serum IGF-1 levels and to determine the role of basal IGF-1 levels on these changes.
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Conclusion & Impact:CONCLUSION: It is thought that basal levels of IGF-1 have impact on the increase of IGF-1 after HRT.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Postmenopoz · Hormon replasman tedavisi · İnsülin-benzeri büyüme faktörü I

Abstract

OBJECTIVE: It is thought that insuline-like growth factor-1 (IGF-1) stimulates bone formation. We aimed to determine the effect of oral and transdermal hormone replacement therapy (HRT) on serum IGF-1 levels and to determine the role of basal IGF-1 levels on these changes. MA TERIALS AND METHODS: 66 postmenopausal women were enrolled into this study. HRT was administered orally in the first group (n=44) and transdermally in the second group (n=22) for six mounts. Serum IGF-1 levels were determined before and after HRT for all patients. Groups were divided into two subgroups according to median value of serum IGF-1 levels (basal IGF-1 levels above or below the median levels). Increments of IGF-1 levels after HRT were calculated (%) for all patients. Mean increment ratios of subgroups were compared to each other. In addition to this, study groups were divided into three subgroups according to increment ratio of IGF-1 (increase >%25, between %25 increase and %25 decrease and decrease >%25). Mean basal IGF-1 levels of these three subgroups were compared. RESULTS: Mean serum levels of IGF-1 before and after HRT were not significantly different in both oral and transdermal groups (p>0,05). In the patients showing basal IGF-1 levels below the median value, mean increment ratio of IGF-1 levels after HRT were %65 in oral %77 in transdermal groups. On the contrary, we determined a decline of IGF-1 levels, %8 in oral and %16 in transdermal groups in the patients showing basal IGF-1 levels above the median value. Basal IGF-1 levels were significantly lower in cases whose serum IGF-1 increased more than %25 after HRT (p<0.05). CONCLUSION: It is thought that basal levels of IGF-1 have impact on the increase of IGF-1 after HRT.

Özet

AMAÇ: İnsülin Benzeri Büyüme Faktörü-1'in (IGF-1) kemik formasyonunu stimüle ettiği düşünülmektedir. Çalışmada oral ve transdermal hormon replasman tedavisinin (HRT) serum IGF-1 düzeyine etkisini ve bazal IGF-1 düzeyinin bu değişimdeki rolünü belirlemek amaçlandı. GEREÇ VE YÖNTEM: Çalışmaya iki grupta toplam 66 postmenopozal hasta alındı. Birinci gruba (n=44) oral, ikinci gruba ise (n=22) ise transdermal HRT altı ay süreyle uygulandı. Tüm hastaların bazal ve HRT sonrası serum IGF-1 düzeyleri saptandı. Gruplar bazal IGF-1 ölçümlerinin ortanca değerine göre iki alt gruba ayrıldı (bazal IGF-1 değeri ortancanın altında ve üstünde olanlar). Her hasta için IGF-1 değerlerindeki tedavi sonrasında artış (%) hesaplandı. Alt grupların ortalama IGF-I artış yüzdeleri birbiriyle karşılaştırıldı. Ayrıca, her iki çalışma grubu IGF-1 artış düzeylerine göre 3 alt gruba ayrıldı (%25 ten fazla artış olanlar, %25 azalma-%25 artış arasında değişim olanlar ve %25 ten fazla azalma olanlar). Bu üç alt grubun ortalama bazal IGF-1 değerleri birbiriyle karşılaştırıldı. BULGULAR: HRT öncesi ve sonrasındaki ortalama serum IGF-1 düzeylerinin oral ve transdermal gruplar arasında anlamlı farklılık göstermediği belirlendi (p>0.05). Ortanca değerin altında bazal IGF-1'i olan hastalarda HRT sonrasında ortalama IGF-1 düzeyi artışı oral grupta %65 ve transdermal grupta %77 saptandı. Bunun tersine ortanca değerin üzerinde bazal IGF-1 seviyesi olan hastalarda ise HRT sonrasında serum IGF-1 düzeylerinde oral grupta %8 ve transdermal grupta %16'hk azalma belirlendi. Tedavi sonunda %25 'ten fazla serum IGF-1 artışı gösteren olgularda bazal IGF-1 düzeyi anlamlı ölçüde düşük bulundu (p<0.05). SONUÇ: IGF-1 'in bazal serum düzeylerinin HRT sonrası plazma düzey artışında belirleyici olabileceği düşünülmektedir.

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Cite This Article

POSACI, C., ALTUNYURT, S., İŞLEKEL, H., ALTEKİN, E., ÖNVURAL, A., ÖNVURAL, B. (2000). Effects of HRT on serum levels of IGF-1 in postmenopausal women. Medical Network Klinik Bilimler ve Doktor, Cilt: 6 - Sayı: 5, 664–668. https://ajindex.com/articles/279631

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