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P M Ossenkoppele

Publications and source records attributed to P M Ossenkoppele.

5 recordsLinked to original sources
PubMed1992

Development and clinical evaluation of a polymerase chain reaction test for detection of Chlamydia trachomatis.

A polymerase chain reaction (PCR) for the detection of Chlamydia trachomatis was developed and evaluated. Two primer-probe sets were designed; one detected a specific sequence of the plasmid, and the other detected the gene encoding the major outer membrane protein. Both sets reacted species specifically and amplified sequences from all human serovars. A simple protocol was used for sample pretreatment. The PCR was optimized by addition of tetramethylammonium chloride and bovine serum albumin. The results of the PCR with the plasmid primer-probe set were compared with those of culture and the Chlamydiazyme and Gen-Probe PACE 2 tests for urogenital specimens from 220 patients. The rates of prevalence of infection with C. trachomatis were 22.7, 16.4, 15.0, and 14.5%, respectively. The sensitivities of the Chlamydiazyme and Gen-Probe PACE 2 assays compared with culture were 66.7 and 61.1%, respectively, and their sensitivities compared with PCR were 60.0 and 60.0%, respectively. The sensitivity of culture compared with PCR was 70.0%. Forty-eight of the 50 specimens positive by PCR with the plasmid primer-probe set could be confirmed by PCR with the major outer membrane protein primer-probe set or culture. It is concluded that the PCR is the most sensitive technique for laboratory detection of C. trachomatis.

Bacteriological Techniques↗
PubMed1991

[Phototoxic dermatitis following the use of Ammi majus fruit for vitiligo].

The injudicious use of a systemically administered herb containing psoralens derived from the fruits of Ammi majus in combination with exposure of the skin to the sun caused a severe phototoxic dermatitis in a Moroccan patient with vitiligo. She was disappointed in the treatment by the dermatologist. A family member advised her to start the treatment with herbs. The identification of the herbs by microscopic, chromatographic and biological techniques demonstrated that they contained the linear furanocoumarins (psoralens) 5-MOP, 8-MOP and oxypeucedanin each in a concentration of approx. 1%. Because of the large immigrant population in our country we expect to see more cases in the future.

Adult↗