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Multispectroscopic investigations of the binding interaction between microplastics and actin protein
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Scientists found that tiny plastic particles can physically bind to actin, a protein that helps give our cells structure and lets them move. Some plastic types (like polystyrene) stuck more strongly than others, and this binding actually changed the protein's shape. This matters because if microplastics build up in our cells and distort important proteins, it could interfere with how cells normally function.
Microplastics (MPs) have become prevalent environmental pollutants that can build up within cells and might eventually disrupt the structure and function of cytoskeletal proteins such as F-actin that are important for cell morphology, motility, and intracellular transport. Still, the molecular principles of MP-F-actin interactions are insufficiently understood. The interaction between MPs and F-Actin, was assessed in this work using multispectroscopic examinations, viz. fluorescence, UV, CD, FTIR spectroscopy to understand the binding behaviour and structural effects. Actin adsorbed onto MPs in the following sequence: PS > PVC > PE and the binding constants are 6.94, 2.67, 1.33 10 M respectively. These findings showed that MPs significantly altered Actin's secondary structure and microenvironment and the interaction is static, exothermic, and spontaneous in nature.
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Interactions of nanoplastics with human albumin and hemoglobin: Structural and spectroscopic insights
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Scientists found that tiny plastic particles (nanoplastics) can physically attach to two key proteins in human blood, albumin and hemoglobin (the protein that carries oxygen), and actually change their shape. This matters because a protein's shape determines how well it works in the body, so these changes could potentially affect how blood proteins function, though more research is needed to confirm real-world health effects. It's an early but important clue in understanding how the plastic pollution we're increasingly exposed to might interact with our bodies at the molecular level.
Multispectroscopic Investigations of the Binding Interaction between Polyethylene Microplastics and Human Hemoglobin
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Scientists used multiple spectroscopic techniques to investigate whether polyethylene microplastics can bind to human hemoglobin, the protein that carries oxygen in blood. They found that microplastic particles do interact with hemoglobin, altering its structural shape and potentially affecting its function. The findings raise questions about what might happen when microplastics enter the human bloodstream and interact with essential blood proteins.
Towards a better understanding of protein affinity for polystyrene nanoplastics: Investigation of surface charge effects, interaction mechanisms and aggregation kinetics
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Scientists found that tiny plastic particles (nanoplastics) interact very differently with proteins in our blood depending on their electrical charge: positively charged particles bind proteins and clump together, while negatively charged ones stay separate. This matters because how these plastic particles behave in our body, whether they clump or spread out, could affect how they travel through blood and tissues, an important step in understanding their health risks.
Nanoplastics alter the conformation and activity of human serum albumin
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Researchers investigated how polystyrene nanoplastics interact with human serum albumin, a key blood protein, and found that nanoplastics bind to the protein through hydrophobic forces, altering its structure and reducing its enzymatic activity. The study suggests that nanoplastic exposure could interfere with normal protein function in the bloodstream, highlighting the need for regulation of nanoplastics in consumer products.
Probing the toxic interactions between polyvinyl chloride microplastics and Human Serum Albumin by multispectroscopic techniques
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Scientists used multiple spectroscopic techniques to characterize how PVC microplastics interact with human serum albumin (the most abundant protein in blood), finding that PVC binds to albumin, alters its structure, and may affect the protein's ability to carry drugs and nutrients.
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