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Journal of Environmental Pathology, Toxicology and Oncology
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ISSN Druckformat: 0731-8898
ISSN Online: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvironPatholToxicolOncol.2014010409
pages 99-109

In Vivo Toxicity of the Culturable Marine Cyanobacterium Geitlerinema pseudacutissimum CNP 1019 Extract on Male Swiss Albino Mice (Mus musculus)

Veerabadhran Maruthanayagam
Department of Marine Biotechnology, National Facility for Marine Cyanobacteria, Bharathidasan University, Tiruchirappalli, India
Manivel Nagarajan
Department of Marine Biotechnology, National Facility for Marine Cyanobacteria, Bharathidasan University, Tiruchirappalli, India
Sundararaman Muthuraman
Bharathidasan University

ABSTRAKT

In this study, we investigated the in vivo toxicity of Geitlerinema pseudacutissimum CNP 1019 organic extract in a murine host. A single intraperitoneal injection of 1 g extract kg−1 body weight (BW) did not exhibit mortality, whereas 3 g extract kg−1 BW (approximate lethal dose) resulted in mortality within 5 days. To perform subchronic exposure toxicity analyses (i.e., daily exposure for a total of 14 days), a maximum concentration of ≤1 g extract kg−1 BW was used. Subchronic toxicity studies in the treated mice, showed fluctuations of feed intake, loss of body weight, increase in specific activity of serum lactate dehydrogenase, alanine aminotransferase and decrease in whole serum protein concentration. LDH isoenzyme expression was found, and levels of the various isoforms were decreased as a result of the treatment. Histopathology studies in liver, kidney, and spleen isolated from the treated mice showed the presence of necrotic debris, hemorrhage, and micronuclei revealing the toxicity of the extract. The dose-dependent alterations in biochemical parameters in conjunction with the histological lesions noted in the animals treated with the prepared extract illustrate the likely potential toxicity to mammals from any encounters with the studied cyanobacterium.


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