Journals / Van Tıp Dergisi / 2020 / Cilt: 27 - Sayı: 4

The Protective Effect of Letrozole In A Rat Ovarian Ischemia-Reperfusion Injury Model

Rat Overi Iskemi-Reperfüzyon Hasarı Modelinde Letrozolün Koruyucu Etkisi

Pages
407–414
Publication Date
2022-11-06
DOI
—
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AI Summary & Key Takeaways

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

Ovarian follicle numberswerehigherandendometrialthicknesswas lower in the letrozole used groups.Conclusion:Letrozolecanbeprotectiveonovarian ischemia-reperfusioninjuryandthiseffectisdueto hypoestrogenic environment by inhibition of aromatase activity, antiinflammatory effects andincreasedblood flow to the ovary by letrozole.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective:Torsion of the ovary is a surgical emergency.
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Key Findings & Data:Future fertility is an important question for choosing the mostappropriatetreatmentstrategyasradicalor conservative.
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Conclusion & Impact:Ovarian follicle numberswerehigherandendometrialthicknesswas lower in the letrozole used groups.Conclusion:Letrozolecanbeprotectiveonovarian ischemia-reperfusioninjuryandthiseffectisdueto hypoestrogenic environment by inhibition of aromatase activity, antiinflammatory effects andincreasedblood flow to the ovary by letrozole.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective:Torsion of the ovary is a surgical emergency. Future fertility is an important question for choosing the mostappropriatetreatmentstrategyasradicalor conservative. Conservative treatment includes detorsion of the twisted ovary and after detorsion, the ischemic injury in ovary increases with reperfusion. During the detorsion process, abundant amounts of reactive oxygen species (ROS) are produced. ROS causes cellular injury by attacking cellular membranes through the peroxidation of polyunsaturated fatty acids and causing cellulardeath.Letrozoleisanonsteroidaromatase inhibitor that blocks estrogen production in all tissues, increases gonadotropin secretion and induces follicular development.Materials and Methods:In this study, rats are divided into 5 groups including 8 rats in each group; control group, ischemia group, ischemia and letrozole group, ischemia-reperfusiongroup,ischemia-reperfusionand letrozole group. For each group Malondialdehyde(MDA) levels were measured, degree of ischemia and number of follicles were recorded by histopathological examination. Endometrial thicknesses were also measured.Results:Intheischemiaandischemia-reperfusion groups,MDAlevelsandgradeofischemiawere significantly decreased with letrozole. Ovarian follicle numberswerehigherandendometrialthicknesswas lower in the letrozole used groups.Conclusion:Letrozolecanbeprotectiveonovarian ischemia-reperfusioninjuryandthiseffectisdueto hypoestrogenic environment by inhibition of aromatase activity, antiinflammatory effects andincreasedblood flow to the ovary by letrozole.

Özet

Amaç:Over torsiyonu cerrahi acil bir durumdur. Fertilite kaygısı tedavinin konservatif mi yoksa radikal mi olacağını belirleyen çok önemli bir sorudur. Konservatif tedavi torsiyone overin detorsiyonunu içerir ve overde oluşan iskemik hasar detorsiyon sonrası reperfüzyon ile artar. Detorsiyon sırasında büyük miktarda reaktif oksijen radikalleri-substratları (ROS, Reactive Oxygen Species) oluşur. ROS ise hücre membranında bulunan poliansature yağ asitlerinin peroksidasyonuna yol açarak hücre hasarına ve hücre ölümüne neden olur. Nonsteroid tipte bir aromataz inhibitörü olan letrozol tüm dokulardaki östrojenüretiminiblokeeder,gonadotropin sekresyonunda artışa sebep olur ve foliküler gelişimi uyarır.Gereç ve Yöntem:Bu çalışmada dişi ratlar her gurupta 8 rat olacak şekilde 5 gruba ayrıldı; kontrol grubu, iskemi gurubu, iskemi ve letrozol gurubu, iskemi-reperfüzyon gurubu, iskemi-reperfüzyonveletrozolgurubu. OverlerdekiMalondialdehit(MDA)seviyeleritespit edildi. İskemiden etkilenme dereceleri ve folikül sayıları histopatolojikolarakdeğerlendirilipnotedildi. Endometrial kalınlık ölçümü yapıldı.Bulgular:Letrozol hem iskemi grubunda hem de iskemi-reperfüzyon grubunda MDA seviyelerini ve histolojik grade’i anlamlı olarak azalttı. Letrozol verilen guruplarda ovaryan folikül sayıları daha fazla, endometrium kalınlıkları ise daha az bulundu.Sonuç:Letrozolunoveriskemi-reperfuzyon hasarında koruyucuolabilirvebuetkisiaromatazinhibisyonu sonucu gelişen hipoöstrojenik ortama, antiinflamatuar etkilerine ve artmış ovaryan kan akımına bağlıdır.

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Cite This Article

GEZER, Ş., BAŞARAN, M. (2022). The Protective Effect of Letrozole In A Rat Ovarian Ischemia-Reperfusion Injury Model. Van Tıp Dergisi, Cilt: 27 - Sayı: 4, 407–414. https://ajindex.com/articles/645961

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