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Nikhil Prasad  Fact checked by:Thailand Medical News Team Nov 05, 2023  3 months, 2 weeks, 2 days, 14 hours, 39 minutes ago

COVID-19 News: University Of California Study Shows That A Ketogenic Diet Can Mitigate SARS-CoV-2 Induced Systemic Reprogramming And Inflammation

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COVID-19 News: University Of California Study Shows That A Ketogenic Diet Can Mitigate SARS-CoV-2 Induced Systemic Reprogramming And Inflammation
Nikhil Prasad  Fact checked by:Thailand Medical News Team Nov 05, 2023  3 months, 2 weeks, 2 days, 14 hours, 39 minutes ago
COVID-19 News: The COVID-19 pandemic has brought the world to its knees, posing a significant threat to human health and life expectancy. The symptoms of COVID-19 vary widely, from asymptomatic cases to severe respiratory distress and multi-organ dysfunction. Notably, comorbidities such as obesity and diabetes have been linked to more severe forms of the disease. Emerging research has suggested a strong connection between metabolism and the immune-inflammatory response, raising questions about the potential role of dietary interventions in improving immunity and mitigating inflammatory damage.

One such dietary intervention under investigation is the ketogenic diet (KD). The KD is characterized by a high-fat, low-carbohydrate intake, which triggers the production of ketone bodies such as β-hydroxybutyrate (BHB), acetoacetate (ACA), and acetone. These ketone bodies serve as an alternative source of energy for the body, bypassing glucose metabolism and promoting the breakdown of fats and proteins for energy. The KD has been shown to modulate the immune response and promote an anti-inflammatory state in various clinical and animal studies.
This COVID-19 News report delves into a recent study conducted at the University of California, Los Angeles (UCLA), which aimed to investigate the effects of a KD on systemic toxicity in mice following infection with SARS-CoV-2. The study's findings reveal that the KD can reduce weight loss, improve overall survival, and mitigate systemic changes induced by the virus. This suggests that the KD may be a promising dietary approach to alter the transcriptional and metabolic response in animals following SARS-CoV-2 infection, with potential implications for improved health outcomes.
The Ketogenic Diet and its Mechanism
Before delving into the study's findings, it's essential to understand the basics of the ketogenic diet. The KD is a low-carbohydrate, high-fat diet that induces a state of ketosis in the body. In ketosis, the body primarily utilizes ketone bodies, such as BHB, ACA, and AC, for energy instead of glucose. This shift in metabolism can have profound effects on various bodily systems.
When an individual follows a KD, their dietary intake is primarily composed of fats, such as those found in oils, nuts, and avocados, and moderate amounts of protein. Carbohydrates, including sugars and starchy foods, are significantly restricted. This dietary pattern forces the body to break down stored fat and dietary fat into ketone bodies, which are then used as the primary energy source.

In this metabolic state, the body's reliance on glucose for energy is reduced, and several changes occur. Fatty acids are mobilized from peripheral fat stores and transported to the liver, where they undergo β-oxidation to produce acetyl-CoA, which is further converted into ketone bodies. These ketone bodies are then distributed to various tissues and organs to meet their energy demands. This alternative energy pathway can have significant implications for overall health and has been explored in various medical contexts.
The Study: Investigating the Impact of a Ketogenic Diet on SARS-C oV-2 Infection
The study conducted at UCLA aimed to assess the effects of a ketogenic diet on systemic toxicity and inflammation in mice infected with SARS-CoV-2. To do this, researchers developed a murine model susceptible to viral infection, mimicking the metabolic and transcriptional changes associated with systemic ketosis. They closely monitored the health of mice over one week following SARS-CoV-2 infection, comparing those fed a ketogenic diet to those on a standard chow diet.
The study's findings were remarkable and offered valuable insights into the potential benefits of the KD in the context of COVID-19:
-A ketogenic diet (KD) Attenuates Systemic Toxicity in Infected Animals: Mice on the ketogenic diet experienced reduced weight loss and improved overall health following SARS-CoV-2 infection. This indicated that the KD may have a protective effect against the virus's systemic toxicity, leading to better survival outcomes. Anticipating SARS-CoV-2 Induced Systemic Transcriptional Reprogramming: The study revealed that the KD induced changes in gene expression that resembled those observed in infected mice under standard diets. This suggests that the KD may prepare the body for adaptive changes induced by viral infection, potentially enhancing the immune response.
-Impact on Matrix Remodeling and Inflammatory Response: The ketogenic diet (KD) led to reduced transcription of genes associated with matrix remodeling and inflammation in vital organs like the heart and liver. This observation indicated that the KD might mitigate matrix remodeling and inflammation triggered by SARS-CoV-2.
-Cytokine Storm Reduction and Systemic Inflammation Mitigation: Analysis of serum markers showed a significant reduction in pro-inflammatory cytokines, metabolic markers of inflammation, and inflammatory prostaglandins in mice on the ketogenic diet. This suggests that the ketogenic diet (KD) could mitigate the cytokine storm associated with severe COVID-19 and reduce systemic inflammation.
-Mitigating Metabolic Changes: Metabolomics profiling demonstrated that the ketogenic diet (KD) helped mitigate the metabolic abnormalities induced by SARS-CoV-2 infection. It led to the restoration of amino acids, nucleotides, energy currency metabolites, acyl-Coenzyme A pool (acyl-CoAs), and lipid precursors in various tissues, promoting metabolic stability.
Discussion: Implications of the Study's Findings
The study's findings shed light on the potential benefits of the ketogenic diet in the context of SARS-CoV-2 infection. The ketogenic diet (KD)'s ability to mitigate systemic toxicity, reduce inflammation, and restore metabolic balance in infected animals suggests that it may be a promising dietary intervention for improving COVID-19 outcomes. Here are some key points to consider:
-Immune Modulation and Inflammation Reduction: The ketogenic diet (KD) has previously been linked to immune modulation and reduced inflammation in various disease contexts, including cancer, epilepsy, and neurodegeneration. These effects may be due to the inhibition of NLRP3 by BHB in the inflammasome pathway. The study's findings indicate that the KD can also reduce systemic inflammation in the context of SARS-CoV-2 infection.
-Potential Clinical Implications: The study's results provide a solid rationale for further research and clinical investigations into the efficacy of targeted dietary and metabolic interventions in COVID-19 management. If the KD proves effective in clinical trials, it could be a valuable tool for improving patient health, reducing the risk of hospitalization, and potentially mitigating long-term COVID-19 symptoms (long COVID).

-Translational Challenges: While the study's findings are promising, it's essential to acknowledge that translating these results to clinical practice comes with challenges. Differences between mouse models and human physiology, as well as the route of infection (i.p. vs. natural respiratory route), should be considered when interpreting the results.
In conclusion, the University of California, Los Angeles study provides valuable insights into the potential of the ketogenic diet to mitigate SARS-CoV-2 induced systemic reprogramming and inflammation. While further research is needed to confirm these findings in human clinical trials, the study opens up new avenues for dietary and metabolic interventions in the fight against COVID-19. It highlights the importance of understanding the interplay between metabolism, immunity, and disease, offering hope for improved COVID-19 outcomes and long-term health.
The study findings were published in the peer reviewed journal: Communications Biology.
For the latest COVID-19 News, keep on logging to Thailand Medical News.
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