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Accumulation of 3-Monochloro-Propanediol Esters in Kidney Tissues of Patients with Human Renal Cell Carcinoma
Che-Yuan Hu1, Yu-An Wang2, Kai-Wei Liao3
1Department of Urology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
Background:
3-Monochloro-propanediol esters (3-MCPDEs), commonly found in refined edible oils and related products, have generated concerns due to their nephrotoxicity and carcinogenicity, yet clinical evidence remains limited.
Objectives:
In this study, we aimed to assess, for the first time, the accumulation of 3-MCPDEs in human kidney tissues, focusing on 68 participants, some with and others without renal cell carcinoma (RCC).
Methods:
An analytical method for 3-MCPDE determination in kidney tissues underwent partial validation to ensure its suitability for sample analysis. The analyst was blind to the sample groups.
Results:
Results revealed significantly higher 3-MCPDE levels in RCC patients compared to non-RCC counterparts (0.22 vs. 0.01 µg/g) (p < 0.01). Moreover, no significant correlation was found between 3-MCPDE levels and tumor stage or size in the RCC group.
Conclusions:
Accumulation of 3-MCPDEs in humans, with significantly higher levels was observed in kidney tumor specimens compared to non-patients. These findings suggest minimizing the intake of 3-MCPD and its esters in diets in order to reduce potential negative health impacts.
Insights
3-Monochloro-propanediol esters (3-MCPDEs) accumulate in human kidneys, with significantly higher levels found in renal cell carcinoma (RCC) patients. Reducing dietary intake of these compounds may mitigate potential health risks.
Area of Science:
- Toxicology
- Human Pathology
Background:
- 3-Monochloro-propanediol esters (3-MCPDEs) are food contaminants found in refined oils.
- Concerns exist regarding their nephrotoxicity and carcinogenicity, but clinical data is scarce.
Purpose of the Study:
- To quantify 3-MCPDE accumulation in human kidney tissues.
- To compare 3-MCPDE levels between patients with and without renal cell carcinoma (RCC).
Main Methods:
- Analysis of 3-MCPDEs in kidney tissue samples from 68 participants.
- Partial validation of an analytical method for 3-MCPDE determination.
- Blinded analysis of samples to prevent bias.
Main Results:
- Significantly elevated 3-MCPDE levels were detected in RCC patients compared to non-RCC individuals (0.22 vs. 0.01 µg/g, p < 0.01).
- No significant correlation was observed between 3-MCPDE levels and tumor stage or size in RCC patients.
Conclusions:
- Human kidney tissues accumulate 3-MCPDEs, with higher concentrations in tumor specimens.
- Findings suggest a potential link between 3-MCPDE exposure and kidney abnormalities.
- Minimizing dietary intake of 3-MCPD and its esters is recommended to reduce health risks.
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