Fructose Consumption Causes Cell Death through ER Stress in Pancreas and Changes Biochemical Parameters in Blood

Year 2022, Volume: 34 Issue: 3, 426 - 433, 30.09.2022

Zeynep Mine Coşkun , Melike Ersöz , Zehra Yaren Dönmez , Nur Esma Demir , Berin Sena Arslan , Sema Gubur , Aynur Acar

https://doi.org/10.7240/jeps.1127868

Abstract

Fructose is the natural sugar found in fruits. This sugar is widely used in all ready-made foods, especially in soft drinks. The study aims to examine how fructose consumption affects biochemical parameters in blood and whether it causes endoplasmic reticulum (ER) stress-caused cell death in pancreatic tissue. Sprague-Dawley rats were separated into control and fructose groups. Control animals (n=7) had free access to tap water, and standard pellet, fructose group (n=7) was given 20% fructose in drinking water for eight weeks. The consumption of food and fluid of the rats were measured daily during the experiment. The lipid levels and total oxidant/antioxidant statuses in serum were analyzed. Grp-78, IRE1-α, PERK, ATF-4, and -6, CHOP, and Caspase (Cas)-3/-8/-9/-12 mRNA expression levels in pancreas were detected. Fructose intake increased TG and VLDL levels in serum, and the mRNA expression levels of Grp-78, IRE-1α, PERK, ATF-4, -6 and Cas-3/-8/-9/-12 in pancreas with fructose consumption as compared with control group. Fructose consumption may cause disruption of lipid profile and oxidant/antioxidant balance, as well as trigger ER stress and thus cause programmed cell death. This will lead to the development of many diseases.

Keywords

Apoptosis, cell death, ER stress, fructose, oxidative stress

Supporting Institution

yok

Project Number

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Thanks

The authors thank Demiroglu Bilim University for the supports.

Fruktoz Tüketimi Pankreasta Endoplazmik Retikulum Stresi Yoluyla Hücre Ölümüne Neden Olur ve Kandaki Biyokimyasal Parametreleri Değiştirir

Abstract

Fruktoz meyvelerde bulunan doğal bir şekerdir. Bu şeker, başta meşrubatlar olmak üzere tüm hazır gıdalarda yaygın olarak kullanılmaktadır. Bu çalışma, fruktoz tüketiminin kandaki biyokimyasal parametreleri nasıl etkilediğini ve pankreas dokusunda endoplazmik retikulum (ER) stres kaynaklı hücre ölümüne neden olup olmadığını araştırmayı amaçlamaktadır. Sprague-Dawley sıçanlar iki gruba ayrıldı. Kontrol grubu (n=7) standart pelet ve çeşme suyu ile beslendi, fruktoz grubunun (n=7) içme suyuna %20 fruktoz 8 hafta boyunca eklendi. Deney süresince sıçanların günlük yem ve sıvı tüketimleri ölçüldü. Serumdaki lipid seviyeleri ve toplam oksidan/antioksidan durumları analiz edildi. Pankreas dokusunda Grp-78, IRE1-α, PERK, ATF-4 ve -6, CHOP, Caspase-3, -8, -9 ve -12 mRNA ekspresyon seviyeleri tespit edildi. Kontrol grubu ile karşılaştırıldığında fruktoz tüketimi, serumda TG ve VLDL düzeylerini ve fruktozlu sıçan pankreasında Grp-78, IRE-1α, PERK, ATF-4, -6 ve Kaspaz-3, -8, -9 ve -12 mRNA ekspresyon düzeylerini artırdı. Fruktoz tüketimi lipid profilinin ve oksidan/antioksidan dengesinin bozulmasına neden olabileceği gibi ER stresini tetikleyerek programlı hücre ölümüne neden olabilir. Bu, birçok hastalığın gelişmesine yol açacaktır.

Keywords

Apoptoz, hücre ölümü, ER stresi, fruktoz, oksidatif stres

Project Number

yok

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