# Evaluation of the protective effects of Spirulina platensis against cyclophosphamide-induced genotoxicity

## TL;DR

This study shows that Spirulina platensis can protect against DNA damage caused by the chemotherapy drug cyclophosphamide in mice.

## Contribution

The novel contribution is demonstrating the antigenotoxic and antioxidant effects of Spirulina platensis in a mouse model of cyclophosphamide-induced toxicity.

## Key findings

- Spirulina platensis powder reduced micronuclei formation in bone marrow cells treated with cyclophosphamide.
- PoSP significantly decreased malondialdehyde levels and increased catalase activity in liver, kidney, and spleen tissues.
- The protective effects of PoSP were dose-dependent and statistically significant.

## Abstract

Damage to normal cells is the most common limitation of cancer chemotherapy. Cyclophosphamide, one of the most widely used anticancer drugs due to its cytotoxicity, can bind to deoxyribonucleic acid (DNA), causing chromosomal breaks, micronuclei, and cell death. The use of natural sources helps to prevent this damage, and Spirulina platensis is highly appreciated for its numerous bioactive compounds. This study aimed to investigate the antigenotoxic effects of Spirulina platensis powder (PoSP) on mouse bone marrow cells in vivo via a micronucleus assay.

Compared to the positive control, the administration of powder significantly reduced the PCE/PCE + NCE (polychromatic erythrocytes, normochromatic erythrocytes) ratio in treated mice. A significant increase in the percentage of MnPCE (micronucleus in polychromatic erythrocytes) in cyclophosphamide-treated bone marrow cells was observed. Compared with the positive controls, the groups treated with different doses in combination with cyclophosphamide presented a significant (p<0.0001) decrease in MnPCE in a dose-dependent manner. Compared to the positive control, PoSP significantly decreased MDA (malondialdehyde) levels in the livers of treated animals. The same things were observed in the kidneys and spleen. The catalase activity was also significantly increased in tissues, compared to negative control.

These findings suggest that PoSP does not cause DNA damage and can prevent genotoxicity, probably through its antioxidant activities.