Endocrine disruptors, estrogenic activity by the YES bioassay, and acute toxicity in Southeastern Brazil metropolitan surface waters

Nascimento, Marília Teresa Lima do; Oliveira-Santos, Ana; Cunha, Danieli Lima da; Felix, Louise Cruz; Gomes, Giselle; Rangel, Carlos; Hauser-Davis, Rachel; Fonseca, Estefan Monteiro da; Maia-Bila, Daniele; Baptista-Neto, José Antonio

doi:10.21715/gb2358-2812.202236005

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…The estrogenic activity via yeast screening assay of each water sample measured as 17β-estradiol relative estrogenicity is summarized in Table 2 . The relative estrogenic activities of all samples were comparable to those of other yeast assays [ 28 , 46 , 47 , 48 ].…”

Section: Resultssupporting

confidence: 67%

“…The data show that open-source water has estrogenic activity of 2.5–9.5 ng/L and is not far from most countries in the world, including bordered countries [ 28 , 46 , 47 , 48 ]. It has been reported that the estrogenic activity of surface water typically should be below 25 ng/L, including the effluent of the water treatment plant [ 94 , 95 ].…”

Section: Resultsmentioning

confidence: 99%

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Assessment of Xenoestrogens in Jordanian Water System: Activity and Identification

Akkam

Omari

Alhmoud

et al. 2023

Toxics

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Sex hormone disruptors (xenoestrogens) are a global concern due to their potential toxicity. However, to date, there has been no study to investigate the presence of xenoestrogen pollutants in the Jordanian water system. Samples in triplicates were collected from six locations in Jordan, including dams, surface water, tap or faucet water, and filtered water (drinking water—local company). Xenoestrogens were then extracted and evaluated with a yeast estrogen screen utilizing Saccharomyces cerevisiae. Later, possible pollutants were mined using ultrahigh-performance liquid chromatography (UPLC) coupled with a Bruker impact II Q-TOF-MS. Possible hits were identified using MetaboScape software (4000 compounds), which includes pesticide, pharmaceutical pollutant, veterinary drug, and toxic compound databases and a special library of 75 possible xenoestrogens. The presence of xenoestrogens in vegetable samples collected from two different locations was also investigated. The total estrogen equivalents according to the YES system were 2.9 ± 1.2, 9.5 ± 5, 2.5 ± 1.5, 1.4 ± 0.9 ng/L for King Talal Dam, As-Samra Wastewater Treatment Plant, King Abdullah Canal, and tap water, respectively. In Almujeb Dam and drinking water, the estrogenic activity was below the detection limit. Numbers of identified xenoestrogens were: As-Samra Wastewater Treatment Plant 27 pollutants, King Talal Dam 20 pollutants, Almujeb Dam 10 pollutants, King Abdullah Canal 16 pollutants, Irbid tap water 32 pollutants, Amman tap water 30 pollutants, drinking water 3 pollutants, and vegetables 7 pollutants. However, a large number of compounds remained unknown. Xenoestrogen pollutants were detected in all tested samples, but the total estrogenic capacities were within the acceptable range. The major source of xenoestrogen pollutants was agricultural resources. Risk evaluations for low xenoestrogen activity should be taken into account, and thorough pesticide monitoring systems and regular inspections should also be established.

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Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 99%

Assessment of Xenoestrogens in Jordanian Water System: Activity and Identification

Akkam

Omari

Alhmoud

et al. 2023

Toxics

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Microplastics in Freshwater River in Rio de Janeiro and Its Role as a Source of Microplastic Pollution in Guanabara Bay, SE Brazil

Drabinski

Carvalho

Gaylarde

et al. 2023

Micro

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In the present research, the occurrence of contamination by microplastics in the water column was investigated in 15 sample sites along the rivers Guapimirim, Macacu and Maracanã—important rivers that flow into Guanabara Bay, a very polluted estuarine environment in Brazil. The correctidentified polymers were manually counted and classified as to their morphology and color using a binocular stereomicroscope and were characterized by ATR-FTIR spectroscopy. The total mean abundance of particles was 3651.5 items m−3, ranging from 3.6 to 51,166.5 items m−3. Plastic debris was identified in all samples, with a predominance of fibers (67.3%). Polyethylene, polyester fiber and high-density polyethylene (50%) were the major polymers, and the main colors were transparent followed by black and blue in all the water bodies studied. The highest quantities of microplastics were found in the Maracanã River. The figures show that microplastic concentrations are correlated to the level of urbanization.

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Endocrine disruptors, estrogenic activity by the YES bioassay, and acute toxicity in Southeastern Brazil metropolitan surface waters

Cited by 2 publications

References 38 publications

Assessment of Xenoestrogens in Jordanian Water System: Activity and Identification

Assessment of Xenoestrogens in Jordanian Water System: Activity and Identification

Microplastics in Freshwater River in Rio de Janeiro and Its Role as a Source of Microplastic Pollution in Guanabara Bay, SE Brazil

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