We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Evaluation of Hematotoxicity in Female Wistar Rats Following Sub-Acute Inhalation Exposure to Polyethylene Microplastic
Summary
Female Wistar rats were exposed to polyethylene microplastic aerosols at 15 mg per cubic meter for 4 hours daily over 28 days, and blood analysis revealed alterations in erythrocyte, leukocyte, and platelet counts. The findings suggest that sub-acute inhalation of polyethylene microplastics can cause hematotoxic effects.
Polyethylene (PE) becomes a source of microplastics that can be widely distributed through the digestive and respiratory systems. However, its effects on blood cells are still being investigated. This study aims to analyze the impact of Polyethylene Microplastic (PE-MPs) exposure on the blood of female rats, including erythrocytes, leukocytes, and platelets. This study used female Wistar rats, which were divided into control and PE-MP groups. PE-MP was administered via whole-body inhalation at a concentration of 15 mg/m³ for 4 hours daily for 28 days. The absorption of plastic particles detected in the human bloodstream is likely to occur through mucosal contact (either through ingestion or inhalation). After the exposure period, the rats were euthanized to collect blood samples through the heart. A complete blood count was performed using an automatic hematology analyzer, and blood morphology was analyzed using thin blood smears. This study used the Mann-Whitney test. PE-MP exposure increased erythrocyte and platelet counts without a corresponding rise in leukocytes. Erythrocytes showed abnormal morphology (12.73% with ovalocytes and tear-shaped cells). Erythrocyte indices (MCV, MCH, MCHC) showed no significant differences. Platelet count rose by 1.7% (p-value= 0.017). Leukocyte and neutrophil counts were lower (0.84 and 0.94 times lower, respectively), while lymphocytes and monocytes were higher (1.03 and 1.61 times higher, respectively) in the PE-MP group compared to controls. The neutrophil-to-lymphocyte ratio did not differ significantly. PE-MP exposure in rats disrupts blood parameters, altering erythrocyte morphology and increasing platelet counts. Potential causes include oxidative stress, immune responses, and compensatory mechanisms. Study limitations include a small sample size and exclusive focus on inhalation exposure. Integrating multiple exposure routes (inhalation, ingestion, dermal) could offer a broader view of microplastic impacts. Future research with larger samples, diverse doses and durations, and exploration of additional markers or organ-specific effects is crucial for understanding PE-MP toxicity in real-world scenarios.
Sign in to start a discussion.
More Papers Like This
Hemotoxic effects of polyethylene microplastics on mice
Researchers exposed mice to different concentrations of polyethylene microplastics for 15 days and studied the effects on their blood. The highest dose caused significant damage to red blood cells, leading to abnormal shapes and reduced blood cell counts, along with impaired liver and kidney function. The study suggests that microplastic exposure may have harmful effects on blood health in mammals, including patterns consistent with anemia.
Subacute PVC Microplastic Inhalation Alters the Complete Blood Count Profile
Researchers exposed mice to PVC microplastics via inhalation over a subacute period and measured changes in complete blood count parameters. Inhalation caused significant alterations in blood cell profiles, indicating that inhaled PVC microplastics provoke a systemic hematological response.
Hematological consequences of polyethylene microplastics toxicity in male rats: Oxidative stress, genetic, and epigenetic links
Researchers gave male rats different doses of polyethylene microplastics orally for 35 days and found significant damage to blood cells and the blood-forming system. Higher doses caused oxidative stress, DNA damage, and changes in gene expression patterns related to blood cell production. The study suggests that chronic microplastic ingestion could harm the blood system through both genetic and epigenetic pathways.
Pengaruh Mikroplastik Polyethylene Terephthalate (PET) Terhadap Profil Eritrosit Tikus Betina Galur Wistar
This animal study tested how PET microplastics (common in plastic bottles) affect blood cells in rats. Results showed that exposure to PET microplastics may lower red blood cell counts, hemoglobin, and hematocrit levels, suggesting potential effects on blood health that warrant further investigation in humans.
Sub-acute polyethylene microplastic inhalation exposure induced pulmonary toxicity in wistar rats through inflammation and oxidative stress
Researchers exposed rats to airborne polyethylene microplastics through inhalation for 28 days and found significant signs of lung damage. The exposed animals showed increased inflammation markers, elevated oxidative stress, and tissue changes in the lungs compared to controls. The study provides evidence that breathing in microplastic particles from degraded plastic bags and bottles may cause pulmonary toxicity.