ANALYSIS OF THE CORE OF FERRUGINOUS BODIES and THE RELATIONSHIP BETWEEN BODY TYPE and CORE CHARACTERISTICS

Abstract

The cores of 164 ferruginous bodies from seven non‐primary asbestos workers were analyzed by the carbon planchet method to elucidate the nature of the core mineral and the relationship between ferruginous body type and the core characteristics. One hundred and sixty‐two cores, except for two talcs, were all amphibole group asbestos. Amosite and anthophyllite fibers were all finer than 0.9 μm and mainly less than 0.5 μm in diameter and had tendency to form type I asbestos bodies. On the other hand, tremolite and actinolite fibers constituted non‐beaded club‐like type II or type IV bodies and tended to have a larger diameter than that of amosite or anthophyllite fibers (p<0.005). These results suggest that the type of asbestos body depends fundamentally on the core diameter (width) rather than the type of asbestos, although the core diameter was correlated with asbestos type. For the analysis and evaluation of ferruginous body cores, which are completely coated, it is necessary to denude the ferruginous coating. This study suggested the usefulness of the carbon planchet method with Dodson's method. ACTA PATHOL JPN 38: 989∼1000, 1988.

The association among ferruginous body, uncoated fibers, asbestos and non-asbestos fibers in lung tissue in terms of length

“…The concentration of ferruginous body and uncoated fibers were demonstrated to be correlated with that of asbestos and non-asbestos fibers among 57 cases in the present study. However, the concentration of ferruginous body, classified by the length of their length, did not significantly correlate with that of amphibole fibers, the main constituent of ferruginous bodies 23 , 24 , 25 ) , whereas the concentrations of chrysotile fibers, regardless of their length, showed a significant correlation with that of ferruginous bodies. Furthermore, a lower correlation coefficient of amphibole fibers with ferruginous body was demonstrated compared to that of chrysotile fibers.…”

Clinical Study of Asbestos-Related Lung Cancer

“…The relative peak heights for seven elements (magnesium, silicon, calcium, sodium, manganese, iron, and aluminum) were measured for each fiber 17) . Values for the relative peak-height percentage of these seven elements were plotted on a Gibbs triangular coordinate diagram 18) . We classified fibers using a discriminate function analysis technique based on the data from the International Union Against Cancer standard fiber analysis 19) .…”

Coexistence of a Malignant Fibrous Histiocytoma and Asbestos Exposure

“…Na. Mn, Fe and Al) were mea sured for each fiber [7][8][9][10]. Values for the relative peak height per centage of these seven elements were plotted on a Gibbs triangular coordinate diagram [11].…”