Protein detection by fluorescence of manually cleaned high-speed dental handpieces.

We analyzed the effectiveness of manual cleaning protocols performed on high-speed dental handpieces, using protein identification by fluorescence. Although one protocol was able to able to lower the amount of protein, >40% of the handpieces showed amounts of residual protein at unacceptable levels.

Mutational data and population profiling of 23 Y-STRs in three Brazilian populations.

Y-chromosomal STRs are important markers in forensic genetics, due to some peculiar characteristics. The absence of recombination makes them a useful tool to infer kinship in complex cases involving distant paternal relatives, or to infer paternal bio-geographic ancestry. The presence of a single copy, being transmitted from father to son, allow tracing mutational events in Y-STRs without ambiguity.

Paternal and maternal mutations in X-STRs: A GHEP-ISFG collaborative study.

The GHEP-ISFG organized a collaborative study to estimate mutation rates for the markers included in the Investigator Argus X-12 QS kit Qiagen. A total of 16 laboratories gathered data from 1,612 father/mother/daughter trios, which were used to estimate both maternal and paternal mutation rates, when pooled together with other already published data. Data on fathers and mothers' age at the time of birth of the daughter were also available for ∼93 % of the cases.

Male lineages in Brazilian populations and performance of haplogroup prediction tools.

The use of Y-chromosomal genetic markers in forensic investigations demands the establishment of reliable and representative DNA databases of different reference populations. The genetic characterization of the Y chromosome variation in human populations requires the analyses of haplotype frequencies allied to haplogroup determination. The present study aimed to contribute to the Brazilian database by providing 1,382 Yfiler Plus individual profiles, from 11 Brazilian states.

Chemical composition and antiproliferative, antioxidant and trypanocidal activities of the fruits from (Mart.) O. Berg (Myrtaceae).

Chemical investigation of the extracts of the fruits from resulted in the isolation of six known compounds identified by NMR and comparison with literature data (2',4'-dihydroxy-5'-methyl-6'-methoxychalcone (), 2',4'-dihydroxy-3',5'-dimethyl-6'-methoxychalcone (), 2'-hydroxy-3'-methyl-4',6'-dimethoxychalcone (), 2',6'-dihydroxy-3'-methyl-4'-methoxychalcone (), 5-hydroxy-7-methoxy-8-methylflavanone () and 7-hydroxy-5-methoxy-6-methylflavanone ()). The considerable antioxidant capacity of the extracts was demonstrated by ORAC-FL and DPPH tests. The antiproliferative assay of the extracts and was done , against many different cancer cell lines besides a healthy one.