Shocking microplastic pollution in the home: up to 100 times as bad as predicted! New research, 2021

by Conrad Scott

Source: https://herculeanstrength.com/microplastic-pollution-home/

Exposure of Human Lung Cells to Polystyrene Microplastics Significantly Retards Cell Proliferation and Triggers Morphological Changes

Study: https://pubs.acs.org/doi/10.1021/acs.chemrestox.0c00486

Abstract

Abstract Image

Microplastics in the environment produced by decomposition of globally increasing waste plastics have become a dominant component of both water and air pollution. To examine the potential toxicological effects of microplastics on human cells, the cultured human alveolar A549 cells were exposed to polystyrene microplastics (PS-MPs) of 1 and 10 μm diameter as a model of the environmental contaminants. Both sizes caused a significant reduction in cell proliferation but exhibited little cytotoxicity, as measured by the maintenance of cell viabilities determined by trypan blue staining and by Calcein-AM staining. The cell viabilities did not drop below 93% even at concentrations of PS-MPs as high as 100 μg/mL. Despite these high viabilities, further assays revealed a population level decrease in metabolic activity parallel in time with a dramatic decrease in proliferation rate in PS-MP exposed cells. Furthermore, phase contrast imaging of live cells at 72 h revealed major changes in the morphology of cells exposed to microplastics, as well as the uptake of multiple 1 μm PS-MPs into the cells. Confocal fluorescent microscopy at 24 h of exposure confirmed the incorporation of 1 μm PS-MPs. These disturbances at the proliferative and cytoskeletal levels of human cells lead us to propose that airborne polystyrene microplastics may have toxicologic consequences. This is the first report of exposure of human cells to an environmental contaminant resulting in the dual effects of inhibition of cell proliferation and major changes in cell morphology. Our results make clear that human exposure to microplastic pollution has significant consequence and potential for harm to humans.

TEPCO Admits Fukushima Radiation “Significantly” Undercounted

TEPCO Admits Fukushima Radiation “Significantly” Undercounted

From April to September of 2013, as Bloomberg reports, TEPCO admits that levels of radiation measured from water samples around the destroyed Fukushima nuclear reactor were “significantly undercounted.”  We assume it was mere coincidence that during this very time Shinzo Abe proclaimed the 2020 Olympics would be safe and used many of these readings as evidence. In addition to this debacle, The BBC reports, the likely scale of the radioactive plume of water from Fukushima due to hit the west coast of North America should be known in the next two months; and rather stunningly, The Japan Times reports a new study finds the lifetime risk of developing cancer has risen among 1-year-old girls in an area affected by the nuclear crisis at the Fukushima No. 1 power plant. But apart from that, everything’s great.

 

TEPCO admits radiation levels were “signicantly” undercounted… (Bloomberg)

 
 

Tokyo Electric Power Co. is re-analyzing 164 water samples collected last year at the wrecked Fukushima atomic plant because previous readings “significantly undercounted” radiation levels.

 

The utility known as Tepco said the levels were undercounted due to errors in its testing of beta radiation, which includes strontium-90, an isotope linked to bone cancer. None of the samples were taken from seawater, the company said today in an e-mailed statement.

 

These errors occurred during a time when the number of the samplings rapidly increased as the result of a series of events since last April, including groundwater reservoir leakage and a major leak from a storage tank,” according to the statement.

And this…

 
 

Earlier today, Tepco suspended the removal of spent nuclear fuel rods at Fukushima plant after a cooling system failed due to a damaged power cable, the company said in a separate e-mailed statement. Work resumed at the reactor No. 4 spent fuel pool after activation of a backup system.

And then there’s the plume coming California’s way… (BBC)

 
 

The likely scale of the radioactive plume of water from Fukushima due to hit the west coast of North America should be known in the next two months.

 

 

Only minute traces of pollution from the beleaguered Japanese power plant have so far been recorded in Canadian continental waters.

 

This will increase as contaminants disperse eastwards on Pacific currents.