Abstract
Background
The non-alcoholic fatty liver disease (NAFLD) is prevalent in as many as 25% of adults who are afflicted with metabolic syndrome. Oxidative stress plays a significant role in the pathophysiology of hepatic and renal injury associated with NAFLD. Therefore, probiotics such as Lactobacillus casei (LBC) and the microalga Chlorella vulgaris (CV) may be beneficial in alleviating kidney injury related to NAFLD.
Materials and methods
This animal study utilized 30 C57BL/6 mice, which were evenly distributed into five groups: the control group, the NAFLD group, the NAFLD + CV group, the NAFLD + LBC group, and the NAFLD + CV + LBC group. A high-fat diet (HFD) was administered to induce NAFLD for six weeks. The treatments with CV and LBC were continued for an additional 35 days. Biochemical parameters, total antioxidant capacity (TAC), and the expression of kidney damage marker genes (KIM 1 and NGAL) in serum and kidney tissue were determined, respectively. A stereological analysis was conducted to observe the structural changes in kidney tissues.
Results
A liver histopathological examination confirmed the successful induction of NAFLD. Biochemical investigations revealed that the NAFLD group exhibited increased ALT and AST levels, significantly reduced in the therapy groups (p < 0.001). The gene expression levels of KIM-1 and NGAL were elevated in NAFLD but were significantly reduced by CV and LBC therapies (p < 0.001). Stereological examinations revealed reduced kidney size, volume, and tissue composition in the NAFLD group, with significant improvements observed in the treated groups (p < 0.001).
Conclusion
This study highlights the potential therapeutic efficacy of C. vulgaris and L. casei in mitigating kidney damage caused by NAFLD. These findings provide valuable insights for developing novel treatment approaches for managing NAFLD and its associated complications.
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Data availability
This article contains all data created and examined throughout this investigation. The corresponding author will provide datasets used or analyzed during the current work upon reasonable request.
Abbreviations
- ALT:
-
Alanine Aminotransferase
- AST:
-
Aspartate Aminotransferase
- BUN:
-
Blood Urea Nitrogen
- Chol:
-
Cholesterol
- CKD:
-
Chronic Kidney Disease
- CV:
-
Chlorella vulgaris
- CVD:
-
Cardio vascular Diseases
- DCT:
-
Distal convoluted tubule
- FOXO1:
-
Forkhead box protein O1
- FRAP:
-
Ferric reducing Antioxidant Power
- GAPDH:
-
Glyceraldehyde 3-phosphate dehydrogenase
- H&E:
-
Hematoxylin and Eosin
- HFD:
-
High-fat diet
- KIM-1:
-
Kidney Injury Molecule-1
- LBC:
-
Lactobacillus casei
- MAFLD:
-
Metabolic-Associated Fatty Liver disease
- NAFLD:
-
Non-alcoholic fatty liver disease
- NASH:
-
Non-alcoholic steatohepatitis
- NGAL:
-
Neutrophil gelatinase-associated lipocalin
- OS:
-
Oxidative stress
- p-AMPK:
-
Phosphorylated AMP-activated protein kinase
- PCT:
-
Proximal convoluted tubule
- ROS:
-
Reactive Oxygen Species
- RT-PCR:
-
Real-Time Polymerase Chain Reaction
- T2D:
-
Type 2 diabetes
- TAC:
-
Total Antioxidant Capacity
- TG:
-
Triglyceride
- TPTZ:
-
2,4,6 tripyridyl-s-triazine
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Acknowledgements
The present article was extracted from the thesis written by Haniyeh Keyghobadi has been submitted in Department of Biology, Zarghan Branch, Islamic Azad University, Zarghan, Iran.
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All experiments, statistical analysis, and figure preparation were conducted by H.K (Haniyeh Keyghobadi), H.B (Hadis bozorgpoursavadjani), N.M (Nazanin Mohammadipoor) and F.K (Farhad Koohpeyma). The initial draft of manuscript was written by M.N (Marzieh Nemati), F.D (Farshad Dehghani), and GH.K (Gholamhossein Keighobadi). All tests were set up and second draft of manuscript was written by F.k, and SD (Sanaz Dastghaib). A final manuscript proof was completed by SD who also contributed more funds to the project.
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Keyghobadi, H., bozorgpoursavadjani, H., Koohpeyma, F. et al. Therapeutic potential of Lactobacillus casei and Chlorella vulgaris in high-fat diet-induced non-alcoholic fatty liver disease (NAFLD)-associated kidney damages: a stereological study. Mol Biol Rep 51, 613 (2024). https://doi.org/10.1007/s11033-024-09542-1
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DOI: https://doi.org/10.1007/s11033-024-09542-1