Rev Invest Clin
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The genomic DNAs of carrier mothers from 20 hemophilia A unrelated Mexican families were analysed by polymerase chain reaction (PCR) amplification of the Bcl I polymorphic region at intron 18 of the factor VIII gene. Eleven women (55%) were found to be informative (Bcl I+/Bcl I-), eight (40%) were Bcl I- homozygotes and one (5%) was a Bcl I+ homozygote. In 18 daughters of the informative families we were able to establish carrier status for eight. The frequency of the Bcl I alleles in the 20 mothers was 0.675 for Bcl I- and 0.325 for Bcl I+ which give a frequency of 44% of heterozygous females in our sample.
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Comparative Study Clinical Trial
[Diagnostic yield of various urine tests in urinary tract infections].
1. To determine the value of pyuria and bacteriuria by high-power field (hpf) in centrifuged urine and of tests with reactive strips for determining leukocyte estearase activity and nitrites in the diagnosis of urinary tract infection (UTI). 2. To establish the ideal cut-off point for these tests. ⋯ The diagnostic performance of leukocyte estearase by reactive strips was similar to the microscopy of leukocytes and bacteria but the nitrite test had a lower performance. The combination of the leukocytes and bacteriuria measured by hpf appears to be very useful in the diagnosis of UTI.