Metabolik sendromlu sıçanların karaciğerlerinde oksidatif strese karşı kuersetinin olası koruyucu etkisi

Year 2019, , 203 - 208, 30.09.2019

Ayça Bilginoğlu

https://doi.org/10.16899/jcm.575413

Cited By: 1

Abstract

Amaç: Metabolik sendrom (MS), yüksek şeker
düzeyi ve insülin direnci ile ilişkilendirilen tip 2 diyabetin tipine bağlıdır.
Tiyoredoksin-1 (TRX-1) sitoplazma ve mitokondride yerleşmiştir ve hücresel
reaktif oksijen türlerini kontrol eder. Bu çalışmanın amacı, MS sıçanların
karaciğerinde, MS ve oksidatif stres arasındaki ilişkiyi ve kuersetinin TRX-1
bağlantılı oksidatif stres üzerindeki etkisini araştırmaktır.

Gereç ve Yöntem: Erkek Wistar sıçanlar  (200-250g ağırlığında)  kullanıldı. Üç gruba ayrıldılar. Kontrol
grup, MS grup (935 mM sükroz içeren içme suyu) ve kuersetin uygulanmış  (15 mg/kg/gün, gavaj ile) MS grup. TRX-1 protein
seviyesi Western blot ile belirlenmiştir.

Bulgular: MS gruptaki aspartat transaminaz
(AST), alanin transaminaz (ALT), laktat dehidrojenaz (LDH) seviyeleri Kon grubu
ile karşılaştırıldığında arttı. MS grubundaki toplam-antioksidan-durumu (TAS), süperoksit-dizmutaz
(SOD), ve glutatyon-peroksidaz (GSH-Px) seviyeleri Kon grubu ile
karşılaştırıldığında azaldı. MS grubundaki toplam-oksidan-durumu (TOS) seviyesi
Kon grubu ile karşılaştırıldığında azaldı. MS grubundaki trigliserit, toplam-kolesterol
ve LDL-kolesterol Kon grubu ile karşılaştırıldığında arttı. MS grubundaki TRX-1
seviyesi Kon grubu ile karşılaştırıldığında azalırken TRX-1 aktivitesi ise
düştü.

Sonuç:
Kuersetin tedavisi AST, ALT, LDH, ve TOS seviyelerini azaltırken GSH-Px, SOD,
ve TAS seviyelerini artırdı. Ayrıca, yağ profili de kuersetin ile değişti.
Sonuç olarak,  Kuersetin tedavisi, MS
grubundaki TRX-1 seviyesini ve aktivitesini önemli derecede artırdı. Bu veriler
MS karaciğerinde artmış olan oksidatif stresin kuersetin ile azalabildiğini
ileri sürmektedir.  

Keywords

Metabolik sendrom, kuersetin, oksidatif stres, insülin direnci, karaciğer

Supporting Institution

TÜBİTAK VE AYBÜ-BAP

Project Number

SBAG-115S827 VE 2864

Possible protective effect of quercetin against oxidative stress in liver from metabolic syndrome rats

Abstract

Abstract

Background/Aims:Metabolic
syndrome (MS) is linked to type of type 2 diabetes mellitus associated with
high glucose level and insulin resistance. Thioredoxin-1 (TRX-1) is localized
in the cytoplasm and the mitochondria and controls cellular reactive oxygen
species. The purpose of this study is to examine the relation between MS and
oxidative stress, and effect of quercetin on oxidative stress via TRX-1 in
liver of MS rats.

Methods: Male wistar rats (200-250g in weight) were used. They were divided three
groups. Control group, MS group receiving (935 mM sucrose in drinking water)
and quercetin treated (15 mg/kg/day, administered by gavage) MS group. Protein
level of TRX-1 was determined by Western blot.

Results:Aspartate
transaminase (AST), alanine transaminase (ALT), lactate dehydrogenase (LDH),
levels increased in MS group as compared with the Con group. Total-antioxidant-status
(TAS), superoxide-dismutase (SOD), and glutathione-peroxidase (GSH-Px) levels
decreased in MS group when compared to Con group. Total-oxidant-status (TOS)
levels increased in MS group as compared with the Con group. Triglycerides, total-cholesterol
and LDL-cholesterol increased in MS group when compared with the Con group. TRX-1
level decreased in MS group and TRX-1 activity was lower in MS group than Con
group.

Conclusions: Treatment
of quercetin decreased AST, ALT, LDH, and TOS levels while it increased GSH-Px,
SOD, and TAS levels. Also, lipid profile changed with quercetin. In conclusion,
treatment of quercetin significantly increased TRX-1 level and activity of
TRX-1 in MS group. These data suggest that elevated oxidative stress in liver
of MS may be reduced by quercetin.

Keywords

Metabolic syndrome, quercetin, oxidative stress, insulin resistance, liver

Project Number

SBAG-115S827 VE 2864

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