Hair lead studies were excluded

Lead Studies

It appears, from the investigations in other laboratories, that the anemia observed in cases of lead poisoning is due to destruction of blood rather than to diminished production of blood. The method of poisoning cells in vitro with lead was adopted in order to study this phenomenon, and distinct effects were thereby obtained, even when only 0.001 mg. of lead is added to approximately 5 billion...

Human Hair Studies: III. Refractive Index of Crown Hair

Should newborn infants be excluded from multiple research studies?

Many infants admitted to neonatal intensive care, especially those born prematurely, are eligible to participate in several research studies. Uniquely, newborns may also have indirectly been involved in research if their mothers were recruited to studies while pregnant. The website of the British Association of Perinatal Medicine lists 20 ongoing clinical trials in which many units in Europe wi...

Relationship between the lead concentration in hair and occupational exposure.

The lead content of hair in workers occupationally exposed was correlated with the blood lead concentration. Determinations of lead in blood and hair were performed by electrothermal atomic absorption spectrophotometry in two exposed groups and a control group. A significant correlation was observed between the blood lead and hair lead concentrations, and a regression analysis showed an exponen...

Review of lead toxicology relevant to the safety assessment of lead acetate as a hair colouring.

The literature on lead toxicology has been critically reviewed to provide a safety assessment of lead acetate as a hair colouring. The main objectives were: (i) to determine the additional lead contribution from hair-colouring use to the total daily environmental lead intake; and (ii) to assess the toxicological significance of this additional contribution. The review also focuses attention on ...