Authors: Rinaldo Wellerson Pereira, Simone Silva dos Santos and S�©rgio Danilo Junho Pena
We describe a novel polymorphic Alu insertion (DXS225) on the human X chromosome (Xq21.3) embedded into an L1 retrotransposon. The DXS225 polymorphism was genotyped in 684 males from the CEPH Human Genome Diversity Panel. This insertion was found in all regions of the globe, suggesting that it took place before modern humans s.. Read More»
Authors: R.M. Silveira, R.M. Machado, E.R. Forni-Martins, C.F. Verola and I.R. Costa
Polyploidy is one of the most important mechanisms of speciation and diversification in plant evolution. Polyploidy results in genetic variation among individuals of the same species and even between populations, and may be responsible for differences in environmental tolerance between populations of the same species. This stu.. Read More»
Authors: Z. Wang, H. Yao, B. Cui, G. Ning and G.Y. Tang
Oral lichen planus (OLP) is a common oral inflammatory disease affecting about 1-2% of the general adult population. As with European families who are diagnosed with OLP, the Chinese family who we studied was diagnosed with a severe form of oral reticular and erosive lesions; moreover, two of the five affected individuals deve.. Read More»
Authors: M.S. Rafael, W.J. Hereira-Rojas, J.J. Roper, S.M. Nunomuraand W.P. Tadei
Dillapiol, a phenylpropanoid isolate from essential oils of leaves of Piper aduncum (Piperaceae), has insecticidal, fungicidal and antimicrobial activities. The insecticidal activity of dil lapiol was tested in vivo on the larvae and pupae of Aedes aegypti, the mosquito vector of dengue. Specifically, the effect of dillapiol o.. Read More»
Authors: G.Q. Zhang S.Y. Yang L.L. Niu D.W. Guo
Y-chromosome short tandem repeats (Y-STRs) are useful tools for identifying paternity origin and male-female mixed samples because of their male-specificity, haploid inheritance and relatively simplicity. We focused on novel Y-STRs deposited in the human Genome database from DYS708 to DYS726. We typed 16 male-specific Y-STRs from males of a Chinese Han popul.. Read More»
Authors: Mariela Nieves, MarÃ?Âa MÃ?¼hlmann and Marta Dolores Mudry
Neotropical Primate karyotypes are highly variable, particularly in the heterochromatic regions, not only regarding the amount of heterochromatin, but also the composition. G and C banding and FISH techniques provide useful information to characterize interspecific relationships. We used chromosome microdissection to develop a.. Read More»
Authors: N. Ulku Karabay and M. Gunnehir Oguz
We examined the cytogenetic and genotoxic effects of the neonicotinoid insecticide imidacloprid and the organophosphate insecticide methamidophos, when administered alone or in combination. These insecticides were tested with the bone marrow chromosome aberration assay and micronucleus test in rats and by the bacterial mutatio.. Read More»
Authors: Grasiela Dias de Campos Severi-Aguiar and Maria TercÃ?Âlia Vilela de Azeredo-Oliveira
Chromatin organization in the holocentric chromosomes of three triatomines species was cytologically studied by fluorescent in situ hybridization with a 45S rDNA probe of Drosophila melanogaster to localize ribosomal genes. In Triatoma tibiamaculata, metaphases I showed telomeric highlights in a single, larger bivalent. In T. .. Read More»
Authors: PatrÃ?Âcia Danielle Lima de Lima, Elizabeth Sumi Yamada, Edmar Tavares da Costa, Claudia do O. Pessoa, Silvia Helena Barem Rabenhorst, Marcelo de Oliveira Bahia, PlÃ?Ânio Cerqueira Cardoso, Raquel Alves Santos, Marilia de Arruda Cardoso Smith and Rommel RodrÃ?Âguez Burbano
Rotenone is a heterocyclic compound widely used as an insecticide, acaricide and piscicide. Its toxicity is mainly caused by the inhibition of mitochondrial respiratory processes and ATP production, resulting in the generation of reactive oxygen species. Reactive oxygen species can interact with DNA, RNA and proteins, leading .. Read More»
Authors: N.P. Pereira, K.C.C. Alevi, J.A. Rosa and M.T.V. Azeredo-Oliveira
In this study, the karyometry of different Triatoma infestans populations from different states of Brazil was analyzed and compared with those of a population from Cochabamba. No significant differences were found between the population from Cochabamba and those from Brazil. These results are consistent with the origin of the T. infestans populations of B.. Read More»