Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614, Poznań, Poland.
Department of Environmental Medicine, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznań, Poland.
Ecotoxicology. 2018 Aug;27(6):752-760. doi: 10.1007/s10646-018-1957-x. Epub 2018 Jun 22.
Winter cyanobacterial blooms have become increasingly common in eutrophic lakes advocating a need for their monitoring and risk assessment. The present study evaluated the toxicity of a winter cyanobacterial bloom in a eutrophicated freshwater lake located in Western Poland. The bloom was dominated by potentially toxic species: Planktothrix agardhii, Limnothrix redekei, and Aphanizomenon gracile. The toxin analysis revealed the presence of demethylated forms of microcystin-RR and microcystin-LR in ranges of 24.6-28.7 and 6.6-7.6 µg/L, respectively. The toxicity of sampled water was further evaluated in platelet-rich plasma isolated from healthy human subjects using lipid peroxidation and lactate dehydrogenase assays. No significant adverse effects were observed. The present study demonstrates that toxicity of some winter cyanobacterial blooms in the temperate zone, like that in Lubosińskie Lake, may not exhibit significant health risks despite microcystin production.
冬季水华蓝藻在富营养化湖泊中变得越来越常见，因此需要对其进行监测和风险评估。本研究评估了位于波兰西部的一个富营养化淡水湖中冬季水华蓝藻的毒性。该水华主要由潜在毒性物种：束丝藻、颗粒直链藻和鱼腥藻组成。毒素分析显示，水样中存在去甲基形式的微囊藻 RR 和微囊藻 LR，浓度范围分别为 24.6-28.7 和 6.6-7.6 µg/L。进一步使用富含血小板的血浆，通过脂质过氧化和乳酸脱氢酶测定评估了采样水的毒性，未观察到显著的不良反应。本研究表明，像卢博辛斯湖这样的温带地区的一些冬季水华蓝藻的毒性，尽管存在微囊藻的产生，但可能不会对健康造成显著风险。
