Inhibition of respiration of tumor cells by methylglyoxal and protection of inhibition by lactaldehyde.

Abstract

The effect of methylglyoxal (MG), ascorbic acid and lactaldehyde has been tested on the in vitro respiration of Ehrlich ascites carcinoma (EAC) cells and several normal and malignant human tissues. Methylglyoxal inhibited the respiration of each type of malignant cell and tissue tested, but it had practically no inhibitory effect on the respiration of any of the normal cells and tissues. Ascorbic acid exhibited a synergistic effect with MG in inhibiting the respiration of all the neoplastic cells. In the presence of lactaldehyde, a catabolite of MG, the inhibitory effect of MG on the respiration of tumor cells was significantly reduced. Lactaldehyde can exert a similar protective effect on the loss of viability and transplantability of MG-treated EAC cells.

• Authors: M Ray, J Halder, S K Dutta, S Ray
• Journal: International journal of cancer (Int J Cancer) Vol. 47 Issue 4 Pg. 603-9 (Feb 20 1991) ISSN: 0020-7136 [Print] United States
• PMID: 1995489 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Aldehydes
• lactaldehyde
• Pyruvaldehyde
• Ascorbic Acid

Topics

• Aldehydes (pharmacology)
• Animals
• Ascorbic Acid (pharmacology)
• Carcinoma, Ehrlich Tumor (metabolism)
• Cell Survival (drug effects)
• Female
• Humans
• In Vitro Techniques
• Leukemia (metabolism)
• Mice
• Neoplasms (metabolism)
• Oxygen Consumption (drug effects)
• Pyruvaldehyde (pharmacology)
• Uterus (metabolism)