Hekinan Technical High School

This is the first case report describing the diagnostic value of dot-shaped inclusions associated with promyelocytic leukaemia nuclear bodies (PML-NBs) to define JC virus-infected glial cells in an intraoperative cytopathological diagnosis for progressive multifocal leukoencephalopathy (PML).

The degree of bladder outlet obstruction (BOO) in benign prostatic hyperplasia (BPH) is most accurately quantified by pressure flow studies (PFS), although these studies are more invasive and complicated than conventional tests. We examined how precisely conventional tests predicted the PFS-assessed degree of BOO. The study population consisted of 232 BPH patients who had undergone routine conventional tests and PFS. Correlation of the conventional test results with the degree of BOO assessed by PFS was examined by Spearman's correlation coefficients. Regression and subgroup analyses were performed to predict the degree of BOO using the conventional test results as the explanatory variables. The degree of BOO correlated with prostate volume, the degree of endoscopic obstruction, and to a lesser extent, with the maximum flow rate (Qmax) and age. The predictability of conventional tests alone, or in combination, for BOO, was approximately 60% to 70%, which is not acceptable for investigational use. However, almost all patients with a prostate volume larger than 30 mL, or with severe obstruction on urethroscopic findings, had an obstructed bladder outlet. PFS is mandatory when the precise evaluation of the degree of BOO is required, and patients are highly likely to have an outlet obstruction when they have a prostate larger than 30 mL, or severely obstructed posterior urethra on endoscopy.

We isolated 25 temperature-sensitive mutants of B/Kanagawa/73 strain generated by mutagenesis with 5-fluorouracil and classified them into seven recombination groups by pair-wise crosses. All mutants showed a ratio of plaquing efficiency at the nonpermissive temperature (37.5 C) to the permissive temperature (32 C) of 10(-4) or less. At 37.5 C most of group I, II, and III mutants did not produce appreciable amounts of protein, but all other group mutants were protein synthesis-positive. A group VII mutant produced active hemagglutinin (HA) and neuraminidase (NA) at the nonpermissive temperature, but Group V mutants produced only active NA and were defective in the HA molecule. The other group mutants, including group IV mutants with mutation only in the NA gene (8, 10), lacked both activities at the nonpermissive temperature. One of nine influenza B virus isolates in 1989 had EOP 37.5/32 of 1/3 x 10(-2) and belonged to recombination group VII.