RESUMO
Allele frequencies for the high polymorphic short tandem repeats (STR) loci PentaE, PentaD, D18S51, D21S11, TH01, D3S1358, FGA, D16S539, D7820, D13S317, vWA and D81179 were analysed in an native Amerindian population from Mato Grosso do Sul state named Terena. Deviations from Hardy-Weinberg expectations were evaluated and the results showed no differences from equilibrium in all loci. The combined power of discrimination and the combined power of exclusion for the 12 tested STR loci were 0.99999999 and 0.999999 respectively. The Terena population data were compared to other from 11 Brazilian populations (Amazônia, Pernambuco, Mato Grosso do Sul, São Paulo, Rio Grande do Sul, Alagoas, Sergipe, Rio Grande do Norte, Santa Catarina, Rondônia and Rio de Janeiro) representing the major Brazilian geographic regions. The F(ST) comparative analysis showed no significant differences between all those populations except when comparing Terena with the remained ones.
Assuntos
Cromossomos Humanos/genética , Etnicidade/genética , Genética Populacional , Indígenas Sul-Americanos/genética , Repetições de Microssatélites/genética , Brasil , Genética Forense , Frequência do Gene/genética , Geografia , HumanosRESUMO
Current peaks have been observed and measured in electrolytic ionic current of L-glutamic acid aqueous solutions at room temperature, in static magnetic fields of 20, 40, and 60 muT flux densities, with a superimposed extremely low-frequency, (1/10) Hz, alternating magnetic field flux density of 40 nT. The distributions of the peaks have mean values centered at the cyclotron resonance frequency of the singly charged L-glutamic acid ion molecular mass in the corresponding static field. Amplitudes and widths of the peaks are compared and analyzed to extract their correlation. The results can be considered a contribution to the understanding of the experimental phenomenology in low-frequency electromagnetic fields on ionic currents of L-glutamic amino acid aqueous solutions. The results can be of interest in the studies on the interaction of the electromagnetic fields with some structural neurotransmitters in cellular medium.
Assuntos
Ácido Glutâmico/química , Magnetismo , Água/química , Eletrólitos/química , Concentração de Íons de Hidrogênio , SoluçõesRESUMO
A current peak has been observed and measured in ionic electrolytic current of a glutamic acid aqueous solution, placed in a static magnetic field of flux density of 40 microT, with a superimposed low-frequency alternating magnetic field of flux density of 40 nT. The peak occurs at the frequency of the cyclotronic resonance of the molecular mass of a single charged glutamic acid ion, placed in a magnetic flux density equal to that of the static field. The amplitude of the current peak is about 30% of the background electrolytic current. Qualitative considerations and a listing of unsolved problems related to the phenomenology are given. The result is the first contribution to the study we have undertaken on the effects of low-frequency alternating electromagnetic fields on the ionic current of amino acid aqueous solutions which are the basic structural units of the proteins.