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Biomedical subjects

B F Rosenblum

Publications and source records attributed to B F Rosenblum.

5 recordsLinked to original sources
PubMed1975

Neuropsychological dysfunction in children with chronic low-level lead absorption.

To investigate the relation between low-level absorption and neuropsychological function, blind evaluations were under-taken in forty-six symptom-free children aged 3-15 years with blood-lead concentrations of 40-68 mug. per 100 ml. (mean 48 mug. per 100 ml.) and in seventy-eight ethnically and socioeconomically similar controls with levels greater than mug. per 100 ml. (mean 27 mug. per (100 ml). All children lived within 6-6 km. of a large, lead-emitting smelter, and in many cases residence there had been lifelong. Mean age in the lead group was 8-3 years and in the controls 9-3. Testing with Wechsler intelligence scales for schoolchildren and preschool children (W.I.S.C. and W.P.P.S.I.) showed age-adjusted performance I.Q. to be significantly decreased in the group with higher lead levels (mean scores, W.I.S.C. plus W.P.P.S.I., 95 v. 103). Children in all ages in the lead group also had significant slowing in a finger-wrist tapping test. Full-scale I.Q., verbal I.Q., BEHAVIOUR, AND HYPERACTIVITY RATINGS DID NOT DIFFER.

Absorption↗
PubMed1975

Epidemic lead absorption near an ore smelter. The role of particulate lead.

Blood lead levels were determined on a random sample of persons in all age groups living near a lead-emitting smelter in El Paso, Texas. A blood lead level of greater than or equal to 40 mug per 100 ml, which was considered indicative of undue lead absorption, was found in 53 per cent of the children one to nine years old living within 1.6 km of the smelter and in 18 per cent of those from 1.6 to 6.6 km; beyond that distance in older persons levels were lower. Children in the first 1.6 km with blood levels of greater than or equal to mug per 100 ml were exposed to 3.1 times as much lead in dust as children there with lower blood values (6447 vs 2067 ppm). There was also airborne lead exposure (8 to 10 mug per cubic meter, annual mean). Paint, water, food, and pottery were less important as sources. The data suggest that particulate lead in dust and air accounted for most of the lead absorption in El Paso children. The smelter was the principal source of this lead, especially within 1.6km of itself.

Adult↗
PubMedDate not supplied

El Paso revisited. Epidemiologic follow-up of an environmental lead problem.

Increased lead absorption was found in 1972 in 56% of 256 children aged 1 to 18 years who lived within 1.6 km of a lead-emitting ore smeltery in El Paso, Tex. Engineering improvements have subsequently reduced emissions from the smeltery, and levels of lead in air, dust, and soil have declined. To evaluate the impact of these environmental improvements on lead absorption, we conducted a follow-up study in 1977 of blood lead levels in 140 children aged 1 through 18 years who lived within 1.6 km of the smeltery. Mean blood lead levels were found to have decreased from 41.4 to 17.7 microgram/dL in children living within 0.8 km of the plant and from 31.2 to 20.2 microgram/dL in children living at 0.8 to 1.6 km. These data argue for the feasibility of reducing children's lead absorption near primary lead smelteries.

Adolescent↗