Meta-analysis reveals cyanotoxins risk across African inland waters

Zhao, Xiangui; Liu, Ying; Guo, Yuming; Xu, Chi; Chen, Liang; Codd, Geoffrey A.; Chen, Jun; Wang, Ying; Wang, Puze; Yang, Li-Wei; Zhou, Long; Xiao, Shi-Man; Wang, Haijun; Paerl, Hans W.; Xie, Ping

doi:10.1016/j.jhazmat.2023.131160

Cited by 13 publications

(5 citation statements)

References 76 publications

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“…This research agenda is timely for applying the precautionary principle as a critical risk management strategy for ensuring the safety of public health and the environment worldwide, particularly in the areas with extremely high risk of cyanotoxin exposure and climate changes. 72 …”

Section: Urgent Need For Research Into Air Eutrophication and Develop...mentioning

confidence: 99%

“…Therefore, we consider “air eutrophication” as a potentially important research field requiring a cross-discipline research effort, including medical, physical, hydrological, geological, and ecological expertise (Chart ). This research agenda is timely for applying the precautionary principle as a critical risk management strategy for ensuring the safety of public health and the environment worldwide, particularly in the areas with extremely high risk of cyanotoxin exposure and climate changes …”

Section: Urgent Need For Research Into Air Eutrophication and Develop...mentioning

confidence: 99%

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Will “Air Eutrophication” Increase the Risk of Ecological Threat to Public Health?

Sun

Lee

et al. 2023

Environ. Sci. Technol.

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Aquatic eutrophication, often with anthropogenic causes, facilitates blooms of cyanobacteria including cyanotoxin producing species, which profoundly impact aquatic ecosystems and human health. An emerging concern is that aquatic eutrophication may interact with other environmental changes and thereby lead to unexpected cascading effects on terrestrial systems. Here, we synthesize recent evidence showing the possibility that accelerating eutrophication will spill over from aquatic ecosystems to the atmosphere via “air eutrophication”, a novel concept that refers to a process promoting the growth of airborne algae, some of them with the capacity to produce toxic compounds for humans and other organisms. Being catalyzed by various anthropogenic forcingsincluding aquatic eutrophication, climate warming, air contamination, and artificial light at nightaccelerated air eutrophication may be expected in the future, posing a potentially increasing risk of threat to public health and the environment. So far knowledge of this topic is sparse, and we therefore consider air eutrophication a potentially important research field and propose an agenda of cross-discipline research. As a contribution, we have calculated a tolerable daily intake of 17 ng m–3 day–1 for the nasal intake of microcystins by humans.

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Section: Urgent Need For Research Into Air Eutrophication and Develop...mentioning

confidence: 99%

Section: Urgent Need For Research Into Air Eutrophication and Develop...mentioning

confidence: 99%

Will “Air Eutrophication” Increase the Risk of Ecological Threat to Public Health?

Sun

Lee

et al. 2023

Environ. Sci. Technol.

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“…High risk of MC-exposure was found in waterbodies providing drinking water in Africa (Zhao et al, 2023). In many West African countries, like Tazania, surface water is the main drinking water source, and thus it is a potentially hazardous source for MC exposure and can be a common public health problem in these areas.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a point-of-use device used for autoantibody analysis and its potential for following microcystin leucine-arginine exposure

Ma,

Loscher,

Parle-McDermott

et al. 2024

Front. Sens.

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Introduction: Globally, the need for measuring exposure to algal toxins has become urgent due to ever-increasing reports of contamination in sea and freshwater, in shellfish and fish stocks and in aerosols.Methods: To address this issue, we evaluated the potential of determining autoantibodies to a panel of biomarkers known to be elevated following exposure to the hepatotoxin microcystin leucine-arginine. The presence of autoantibodies, specific to four selected stress-response, metabolomic and chaperone biomarkers, namely, Heat shock protein 1, Triosephosphate isomerase, Peroxiredoxin 1 and Peroxiredoxin 2 was employed in screening 371 serum samples from microcystin-exposed individuals in Tanzania. In addition, the capacity of the LightDeck fluorescence-based detector, a point-of-use device, to monitor these autoantibody responses in comparison to enzyme-linked immunosorbent assay was evaluated.Results: By using the determination of autoantibodies to this novel panel of biomarkers an altered response was observed following microcystin exposure, with levels generally upregulated. The presence of elevated levels of microcystin leucine-arginine in water, as well as in food sources in Tanzania, may potentially have significant health effects on the population.Discussion: This novel biomarker panel may have potential for the detection of microcystin leucine-arginine exposure as well as various microcystin exposure-associated cancers (e.g., hepatocellular cancer and colorectal cancer). In addition, the utilisation of the LightDeck point-of-use device proved successful for the rapid analysis of this biomarker panel.

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“…150 years ago. 1 Over the past 50 years, incidences of toxic cyanobacterial blooms (especially Microcystis, Anabaena, Aphanizomenon, or Oscillatoria) have increased in frequency, magnitude and duration globally [2][3][4][5] due to increased eutrophication resulting from urbanization, industrialization, and intensification of agricultural activities. 6 This has affected the biodiversity and functions of aquatic food webs [7][8][9][10][11] and threatened the safety of drinking water, fishing operations, recreational activities and wildlife.…”

Section: Introductionmentioning

confidence: 99%

Nontraditional biomanipulation: A powerful ecotechnology to combat cyanobacterial blooms in eutrophic freshwaters

Chen,

Liu,

Han

et al. 2023

TIL

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Cyanobacterial blooms, occurring frequently in eutrophic freshwaters worldwide, are considered as potential hazards to ecosystems and human health, and it is often difficult and expensive to control their outbreaks in large lakes through reduction of nutrient loadings. Biomanipulation, launched as an ecology-based solution in the 1970s, was once believed to be an effective way to counteract cyanobacterial blooms. It is divided into traditional biomanipulation (TB) and nontraditional biomanipulation (NTB) that use filter-feeding Daphnia and filter-feeding fish, respectively. There have been numerous reviews on the former, yet few on the latter. Here, we first revisit the debate on the digestibility of cyanobacteria in silver and bighead carp. Then, we review 42 experiments that clearly mention cyanobacterial changes and reveal substantial reductions in cyanobacterial abundance by filter-feeding carp in 88% of the cases. In particular, in a whole-lake experiment in Lake Donghu, increased stock of silver and bighead carp effectively decreased Microcystis blooms from a coverage of 87% in 2021 to 0% in 2022. Finally, we discuss possible factors related to NTB��s effectiveness that depends not only on standing stock, niche divergence and shape preference of the fish but also on trophic status of the waterbodies. Particularly, silver and bighead carp feed more effectively on colony-forming Microcystis than on filamentous cyanobacteria, but are capable of increasing small-sized algae. NTB can be used to prevent or diminish cyanobacterial blooms that are poorly grazed by Daphnia, providing an effective and sustainable in-lake ecotechnology to combat heavy cyanobacterial blooms in eutrophic waterbodies.

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Meta-analysis reveals cyanotoxins risk across African inland waters

Cited by 13 publications

References 76 publications

Will “Air Eutrophication” Increase the Risk of Ecological Threat to Public Health?

Will “Air Eutrophication” Increase the Risk of Ecological Threat to Public Health?

Evaluation of a point-of-use device used for autoantibody analysis and its potential for following microcystin leucine-arginine exposure

Nontraditional biomanipulation: A powerful ecotechnology to combat cyanobacterial blooms in eutrophic freshwaters

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