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Exploring the Epidemiology and Molecular Mechanisms of Riboflavin Against Chronic Kidney Disease Based on Data
Ziyi Liu1,2, Jiyuan Li3, Fenghua Peng3
1Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
Background:
Riboflavin, which is mainly obtained from dietary sources, plays a role mainly in energy metabolism and antioxidants, and has been used for the prevention and treatment of several diseases. However, the epidemiological and molecular mechanisms linking riboflavin to chronic kidney disease (CKD) are unclear.
Methods:
Epidemiological studies were conducted using data from the National Health and Nutrition Examination Survey. Logistic regression models and restricted cubic spline were used to assess the association between riboflavin and CKD. Mediation analyses were applied to explore the effects of inflammatory factors. In addition, molecular mechanism studies were conducted using multiple publicly available databases. STRING, Cytoscape and microarray data were used to screen the genes. Clinical relevance and distribution of targets in the kidney were explored using the Nephroseq v5 online platform and single-cell RNA sequencing. The binding activity of riboflavin to target proteins was investigated by molecular docking.
Results:
The weighted prevalence of CKD was 14.8%. High riboflavin intake is associated with a reduced risk of CKD (especially early CKD). Mediation analysis showed that alkaline phosphatase mediated riboflavin to reduce CKD prevalence with a mediation ratio of 10.5%. 74 potential targets of riboflavin against CKD were obtained through data mining. The possible mechanisms of riboflavin against CKD are related to apoptosis, PI3K/Akt signaling, MAPK signaling and IL17 signaling pathway, among which 9 hub genes (MYC, TP53, BCL2, AKT1, TNF, JUN, IL1B, IL6 and CASP3) are mainly related to MAPK signaling. In CKD patients, IL1B expression levels were increased, mainly in renal macrophages, and correlated with decreased renal function, while signals such as VISFATIN and SPP1 were highly expressed. Molecular docking verified that riboflavin has good binding potential to IL1B protein.
Conclusions:
This study highlights the clinical potential of riboflavin in preventing CKD, and explores its epidemiological and preventive mechanisms.
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