Selenium-Enriched Probiotic Alleviates Western Diet-Induced Non-alcoholic Fatty Liver Disease in Rats via Modulation of Autophagy Through AMPK/SIRT-1 Pathway.
Study Goal
The researchers aimed to investigate the therapeutic effect of selenium-enriched probiotics (SP) in treating non-alcoholic fatty liver disease (NAFLD) induced by a Western-style high-fat and high-fructose diet.
Results Summary
The study found that the Western diet induced NAFLD in rats, characterized by hyperglycemia, hyperlipidemia, insulin resistance, and hepatic steatosis. SP supplementation improved these conditions by upregulating autophagy proteins (LC-3 A/B, Beclin), AMPK, and SIRT-1, reducing hepatic steatosis.
Population
Male Sprague Dawley rats (160-180 g)
Effective Dosage
L. acidophilus 1 × 10^9 CFU/ml containing 0.4 g Se/day, orally
Duration
8 weeks
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
Selenium-enriched L. acidophilus SNZ 86 | decrease | a variety of gastrointestinal illnesses | - | - | has been shown to be effective in the treatment of | #1 |
High-fat and High-fructose diet | increase | hyperglycemia, hyperlipidemia, insulin resistance, abnormal liver function test, increased hepatic oxidative stress, and steatosis | Male Sprague Dawley rats | - | exhibited | #2 |
High-fat and High-fructose diet | increase | an animal model mimicking NAFLD | Male Sprague Dawley rats | - | fed for 12 weeks to develop | #3 |
- | decrease | the expression of autophagy proteins (LC-3 A/B and Beclin), AMPK, and SIRT-1 | NAFLD control rats | - | significantly reduced | #4 |
supplementation of SP | decrease | hepatic steatosis | - | - | ameliorates | #5 |
supplementation of SP | improvement | biochemical markers | - | - | ameliorates hepatic steatosis as evidenced by improved | #6 |
supplementation of SP | increase | the AMPK and SIRT-1 pathway | - | - | ameliorates hepatic steatosis as evidenced by autophagic activation via upregulation of | #7 |
Current study was aimed to investigate the ability of L.acidophilus SNZ 86 to biotransform inorganic selenium to a more active organic form, resulting in trace element enrichment. Selenium-enriched L. acidophilus SNZ 86 has been shown to be effective in the treatment of a variety of gastrointestinal illnesses, indicating the need for additional research to determine the full potential of this therapeutic strategy in the treatment of metabolic disorders. Herein, we employed the western style diet-induced model of non-alcoholic fatty liver disease (NAFLD) to explore the therapeutic effect of selenium-enriched probiotic (SP). Male Sprague Dawley rats (160-180 g) were fed a high-fat (58% Kcal of fat) and high-fructose (30% w/v) diet for 12 weeks to develop an animal model mimicking NAFLD. High-fat and High-fructose diet-fed rats exhibited hyperglycemia, hyperlipidemia, insulin resistance, abnormal liver function test, increased hepatic oxidative stress, and steatosis. SP was then administered orally (L acidophilus 1 × 109 CFU/ml containing 0.4 g Se/day; p.o.) for 8 weeks. The selenium enrichment within L. acidophilus SNZ 86 was validated by TEM, which allowed for visualisation of the selenium deposition and size distribution in the probiotic. In NAFLD control rats, the expression of autophagy proteins (LC-3 A/B and Beclin), AMPK, and SIRT-1 was significantly reduced indicating downregulation of autophagy. However, supplementation of SP ameliorates hepatic steatosis as evidenced by improved biochemical markers and autophagic activation via upregulation of the AMPK and SIRT-1 pathway showing the relevance of autophagy in the disease aetiology. Collectively, these findings provide us with a better understanding of the role of SP in the treatment of hepatic steatosis and establish a therapeutic basis for potential clinical application of SP in the prevention of NAFLD and associated pathological conditions.