Publication: Modulatory effect of inulin with soya isoflavones on plasma lipid profile and liver SCD-18 index in rats with induced type-2 diabetes mellitus
Authors
Misiakiewicz Has, Kamila Daria ; Maciejewska, Dominika ; Kolasa Wołosiuk, Agnieszka ; Pilutin, Anna ; Rzeszotek, Sylwia ; Wilk, Aleksandra ; Szypulska Koziarska, Dagmara ; Stachowska, Ewa ; Łukomska, Agnieszka ; Wiszniewska, Barbara
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Publisher
Universidad de Murcia.Departamento de Biologia Molecular e Histiologia
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DOI
https://doi.org/10.14670/HH-18-113
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info:eu-repo/semantics/article
Description
Abstract
Obesity and type-2 diabetes are often
associated with nonalcoholic fatty liver disease
(NAFLD). Soya isoflavones act as antidiabetic agents
and protect against NAFLD. There are data suggesting
that inulin may increase the plasma concentration and
effect of soya isoflavones. The aim of the present study
was to compare the effect of soya isoflavones, as
opposed to the effect of soya isoflavones with inulin, on
plasma lipid profile, liver morphology, and liver fatty
acids in rats with induced type-2 diabetes mellitus.
Data were collected on thirty-six male Sprague-
Dawley rats divided into control and diabetic groups.
Animals in the diabetic (DM) group were on a high-fat
diet and were injected with low doses of streptozotocin.
Animals in the control groups were fed a regular diet and
were injected with a buffer. After the injections, the
animals were divided into three groups of nondiabetic
rats (nDM)-controls (c-nDM), rats treated with
isoflavones (IS-nDM), and rats treated with isoflavones
plus inulin (IS+IN-nDM)-and three parallel diabetic
(DM) subgroups: controls (c-DM), rats treated with
isoflavone (IS-DM), and rats treated with isoflavones
plus inulin (IS+IN-DM). Hepatic steatosis and fibrosis
were examined using hematoxylin-eosin staining and
Mallory’s trichrome methods respectively. Liver fatty
acids were extracted and analyzed by gas
chromatography. A lipid blood test was performed.
The study showed significant changes in liver fatty
acids, liver morphology, and plasma lipid profile. The
estimated SCD-18 index significantly decreased in both
the control and DM groups after isoflavone
supplementation. The level of liver steatosis and fibrosis
also decreased after isoflavone supplementation in the
DM groups. The plasma lipid profile showed increased
levels of HDL-C after isoflavone supplementation in the
DM groups.
These results support the protective use of
isoflavones in liver steatosis and as beneficial to plasma
lipid profile in individuals with diabetes. A novelty of
this work is its comparison of supplementation using
soya isoflavones with supplementation using both soya
isoflavones and inulin. Surprisingly, additional
supplementation with inulin modulates the positive
effect of isoflavones
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Citation
Histology and Histopathology Vol. 34, nº 10 (2019)
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