The complete genome of the hamster papovavirus (HaPV) which was isolated from virions found in multiple skin tumors of Syrian hamsters was cloned in Escherichia coli using the plasmid vector pBR322. The cloned viral DNAs were identified by digestion of the recombinant DNAs with various restriction enzymes followed by comparison of their electrophoretic mobilities in agarose gels with that of similarly digested uncloned DNAs. The cloned HaPV DNAs showed the same migration pattern as the corresponding fragments from the restricted uncloned DNAs, indicating that no major insertions or deletions occurred during cloning and plasmid propagation. The electrophoretic data were confirmed by Southern blot hybridization.

Animals↗

PubMedDate not supplied

Tinea superficialis capitis due to Trichophyton soudanense in African immigrants.

Trichophyton soudanense is a common cause of tinea capitis in north-western tropical Africa. In European countries, infection seems to occur nearly exclusively in African immigrants and not in the indigenous population. From 1986 to 1995 we obtained 7908 fungal cultures from patients undergoing treatment at the department of Dermatology in Aachen, Germany. During this period we observed eight cases of tinea capitis by T. soudanense in African immigrants aged 2-11 years. One African immigrant suffered from tinea pedis and one German patient demonstrated tinea corporis attributed to T. soudanense. All cases responded well to local antimycotics in combination with systemic griseofulvin.

Adult↗

PubMedDate not supplied

Doppler power frequency spectrum analysis in the diagnosis of carotid artery disease.

Power Frequency Spectral Analysis (PFSA) which evaluates the power of the frequency components at a selected interval, was applied in this preliminary study using a 5MHz Doppler continuous wave flow velocity meter and a modified Edwards Spectraview 500 analyzer. PFSA was used to study the common, internal and external carotid arteries of ten young adult control subjects and 31 patients with angiographically documented carotid bifurcation lesions. Two useful indices are described: (1) the frequency band width at 50% of maximum power (f50%) and (2) the highest frequency recorded (fmax). An f50% wider than 1900 Hz (corresponding to spectrum broadening) identified stenoses as low as a 15% diameter reduction. An fmax higher than 6500 Hz practically always indicated a 50% or greater diameter reduction. Eighty two percent of stenoses with 11-25% diameter reduction were detected, as were 95% of stenoses from 36-50%. All stenoses from 51-99% were identified.

Angiography↗