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The purpose of this study was to find out the effect of lead exposure on systolic and diastolic blood pressure, heme biosynthesis related and hematological parameters of automobile workers. For this study 30 automobile workers were selected and compared with 30 age matched healthy control subjects. Significantly increased blood lead (364%, P &lt; 0.001) and urinary lead (176%, P &lt; 0.001) levels were observed in automobile workers (study group) as compared to controls. Systolic blood pressure (5.32%, P &lt; 0.05) and diastolic blood pressure (5.87%, P &lt; 0.05) were significantly increased in the automobile workers as compared to controls. The significantly decreased non-activated erythrocyte δ-aminolevulinic acid dehydratase (δ-ALAD) (-18.51%, P &lt; 0.01) and activated δ-ALAD (-13.29%, P &lt; 0.05) levels were observed in automobile workers as compared to normal healthy control subjects. But the ratio of activated/non-activated δ-ALAD was significantly increased (43.83%, P &lt; 0.001) in automobile workers as compared to controls. Excretions of δ-aminolevulinic acid (83.78%, P &lt; 0.001) and porphobilinogen (37%, P &lt; 0.001) in urine were significantly increased in the study group as compared to the controls. In automobile workers heamoglobin (-11.51%, P &lt; 0.001), hematocrit (-4.06%, P &lt; 0.05), mean corpuscle volume (-3.34%, P &lt; 0.05), mean corpuscle hemoglobin (-5.66%, P &lt; 0.01), mean corpuscle hemoglobin concentration (-7.67%, P &lt; 0.001), red blood cell count (-14.6%, P &lt; 0.001) were significantly decreased and total white blood cell count (11.44%, P &lt; 0.05) increased as compared to the controls. The results of this study clearly indicate that the absorption of lead is more in automobile workers and it affects on blood pressure, heme biosynthesis and hematological parameters observed in this study group.

indian journal of clinical biochemistry

Biochemical Effects of Lead Exposure on Systolic &amp; Diastolic Blood Pressure, Heme Biosynthesis and Hematological Parameters in Automobile Workers of North Karnataka (India)