Hematological biochemical and liver function changes associated with BTEX exposure in a six year retrospective cohort...

Area of Science:

• Occupational Health
• Environmental Toxicology
• Biochemistry

Background:

• Benzene, toluene, ethylbenzene, and xylene (BTEX) are common volatile organic compounds found in petroleum products.
• Occupational exposure to BTEX is a concern in industries like petroleum distribution.
• Understanding the health effects of chronic BTEX exposure is crucial for worker safety.

Purpose of the Study:

• To investigate the long-term health effects of BTEX compound exposure in Iranian petroleum industry workers.
• To analyze changes in hematological, biochemical, and liver function parameters due to BTEX exposure.

Main Methods:

• A 6-year retrospective cohort study design.
• Annual blood sample collection from exposed and control groups.
• Analysis of various blood parameters including liver function tests (ALT, AST), lipid profiles (TG, LDL, HDL), and hematological markers (Hb, HCT, MCV, MCHC, platelets, WBC, RBC).
• BTEX exposure monitoring using the NIOSH 1501 method.

Main Results:

• Significant time-dependent increases in Alanine Aminotransferase (ALT), Triglycerides (TG), Hemoglobin (Hb), and Mean Corpuscular Hemoglobin Concentration (MCHC) in the exposed group.
• A statistically significant decrease in Low-Density Lipoprotein (LDL) levels was observed in the exposed cohort.
• The findings indicate adverse effects on liver function, lipid metabolism, and hematopoietic parameters.

Conclusions:

• Long-term occupational exposure to BTEX compounds is associated with adverse health outcomes.
• The study suggests potential risks to the liver, lipid profile, and blood cell parameters.
• Further research with larger cohorts and extended follow-up is recommended to validate these findings.