ISSN:
1824-3096
Keywords:
Salivary Protein Variation
;
demography
;
caries
;
Brazil
;
Migration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A total of 434 White and 148 Black persons from the southern Brazilian city of Porto Alegre were studied in relation to the Pr, Db, Pa, Ps and amylase electrophoretic salivary systems. Concomitantly, individual migration, parent-offspring and marital distances were recorded for these individuals, their spouses and ancestors. As far as these dispersion measures are concerned, White/Black and intergeneration differences were generally higher in the present study than in earlier ones, although the averages found this time were consistently lower than those observed before. The correlations between these measures indicated a higher degree of independence between generations than was previously inferred. In the genetic studies, 21 comparisons between the Porto Alegre distributions and those found in North American, European and African surveys yelded 7 significant differences. In general the allele frequencies in Porto Alegre show intermediate values between those found elsewhere among Blacks and Whites, suggesting admixture in these two racial segments of that city. Using previous estimates of such admixture the gene frequencies of the putative Porto Alegre parental populations were estimated and compared with present European and African results. Relatively large differences were observed for the Db+ andAmy 1 E markers only. No significant associations were detected between the salivary phenotypes and the prevalences of caried, extracted and filled teeth.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02442037
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