Renal transplantation in patients with a history of heroin abuse.
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Biomedical subjects
Publications and source records attributed to D Glicklich.
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Two DNA-dependent RNA polymerases (ribonucleoside triphosphate:RNA nucleotidyl transferase, EC 2.7.7.6) have been isolated from pea (Pisum sativum) seedlings. The enzymes were solubilized by sonication in high salt buffer and were separated by chromatography on diethylaminoethyl cellulose using a linear salt gradient. Polymerase I eluted at 0.10 m (NH(4))(2)SO(4), accounted for about 10% of the recovered activity and was completely insensitive to alpha-amanitin. Polymerase II eluted at 0.14 m (NH(4))(2)SO(4), accounted for the remaining 90% of recovered activity and was strongly inhibited by alpha-amanitin. Both enzymes preferred denatured to native DNA as template, both showed an absolute requirement of divalent cation, and both were sensitive to the ionic strength of the assay medium. The developing pea seedling seems a promising system for studies of possible changes in relative activities and roles of multiple RNA polymerases during eukaryotic development.
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BACKGROUND: The insertion/deletion (I/D) polymorphism of angiotensin converting enzyme (ACE) gene has been associated with progression of renal diseases. AIMS: We investigated its role in the rate of progression of focal segmental glomerulosclerosis (FSGS). METHODS: Forty-seven patients with end-stage renal disease (ESRD) due to FSGS were evaluated. RESULTS: The distribution of ACE genotype was II-25.5%, ID-55.5%, and DD-19%, as compared to 40 controls with genotype of 7.5%, 60%, and 32.5%, respectively (p= NS). In African Americans (AA) the gene frequencies among patients and controls were I-43%, D-57% vs I-36%, D-64%, respectively. This was different than the gene frequencies in White/Hispanic (W/H) patients I-61.5%, D-38.5% vs I-38.6%, D-61.4%, in controls (P < 0.05). In 22 patients with rapid progression (RP) of FSGS to ESRD the genotype distribution was II-18%, ID -64%, and DD-18%. In 25 patients with FSGS who progressed slowly (SP) the genotype was similar (II-32%, ID-48% and DD-20%, P >0.05). With respect to rate of progression, D allele frequency was similar in AA patients (RP 64% vs SP 50%) and W/H patients (RP 36% vs SP 40%). CONCLUSION: Our study reveals no association between the I/D polymorphism of the ACE gene and the presence of and rapidity progression of FSGS.