RESUMO
Reverse transcription-polymerase chain reaction (RT-PCR) was used to study 34 patients with chronic myelogenous leukemia (CML) associated with negative Philadelphia (Ph) chromosome. This report showed evidence of a chimeric BCR/ABL transcript in 18 (52.9%) and 28 (82.4%) cases by first PCR and seminested PCR, respectively. In these BCR/ABL transcript positive cases, the incidence of BCR exon3/ABL exon2 (B3A2) and BCR exon 2/ABL exon2 rearrangement was 25 (89.3%) and 3 (10.7%) cases, respectively. The other 6 Ph negative patients showed no evidence of reciprocal translocation of BCR to chromosome 9. This data demonstrates that seminested PCR is sufficiently sensitive to detect BCR/ABL fusion transcript in Ph chromosome negative CML patients.
Assuntos
Feminino , Proteínas de Fusão bcr-abl/análise , Amplificação de Genes , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/sangue , Masculino , Cromossomo Filadélfia , Valores de Referência , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Sensibilidade e EspecificidadeRESUMO
Forensic samples that are often degraded and limited in quality cause DNA typing analysis by conventional methods unsuitable. We performed a single tube-multiplex PCR on 9 STR loci (D3S1358, vWA, FGA, TH01, TPOX, CSF1PO, D5S818, D13S317, and D7S820) and the X-Y homologous gene amelogenin of DNA extracted from six week postmortem blood stain and decomposed muscle by using QIAGEN QIAamp blood or tissue procedure. An automated genetic analyzer based on fluorescent dye technology was used to detect STR allele patterns. The DNA profile of blood stain sample obtained a complete and unambiguous pattern, whereas, that of muscle DNA extracted from QIAamp tissue and Chelex plus QIAamp blood protocols showed detected STR alleles for 70 per cent and 50 per cent of all tested alleles, respectively. The degraded muscle DNA could not yield amplified products of large size STR alleles; CSF1PO, D13S317 and D7S820. However, the analysis which relied upon the PCR-based STR polymorphism analysis and automated genetic analyzer system offers an ideal strategy for forensic identification.
Assuntos
Autopsia , Manchas de Sangue , DNA/análise , Impressões Digitais de DNA , Humanos , Músculo Esquelético/química , Reação em Cadeia da Polimerase , Polimorfismo Genético/genética , Sensibilidade e Especificidade , Sequências de Repetição em TandemRESUMO
A unique case of nosocomial aspergillosis following neurosurgery in a 10 year old girl was documented. She presented with intracerebral hemorrhage after three weeks of operation for evacuation of craniopharyngioma. To our knowledge, this is the first reported case of intracerebral hemorrhage due to nosocomial aspergillosis following neurosurgery.