Publications by authors named "Lesnik R"

The West Bank can be considered a high-risk area for Legionnaires' disease (LD) due to its hot climate, intermittent water supply and roof storage of drinking water. , mostly , are responsible for LD, a severe, community-acquired and nosocomial pneumonia. To date, no extensive assessment of spp and using cultivation in combination with molecular approaches in the West Bank has been published.

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Bacteria of the genus Legionella cause water-based infections resulting in severe pneumonia. Here we analyze and compare the bacterial microbiome of sputum samples from pneumonia patients in relation to the presence and abundance of the genus Legionella. The prevalence of Legionella species was determined by culture, PCR, and Next Generation Sequencing (NGS).

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Water samples of the Drinking Water Supply System (DWSS) of the city of Braunschweig were analysed for its Legionella species composition using genus-specific PCR amplicons and single-strand conformation polymorphism (SSCP) fingerprint analyses based on 16S rRNA genes. These analyses comprised the whole supply chain including raw water, treatment process and large-scale storage, and a seasonal study of finished drinking water sampled monthly from cold and hot tap water. Treatment of raw water had a major impact on Legionella species by reducing their diversity and abundances.

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In recent years novel human respiratory disease agents have been described in South East Asia and Australia. The causative pathogens were classified as pteropine orthoreoviruses with strong phylogenetic relationship to orthoreoviruses of flying foxes inhabiting these regions. Subsequently, a zoonotic bat-to-human transmission has been assumed.

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Background: Bats receive increasing attention in infectious disease studies, because of their well recognized status as reservoir species for various infectious agents. This is even more important, as bats with their capability of long distance dispersal and complex social structures are unique in the way microbes could be spread by these mammalian species. Nevertheless, infection studies in bats are predominantly limited to the identification of specific pathogens presenting a potential health threat to humans.

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We have developed a murine model to measure the effects on sebaceous glands of ultraviolet (UV) radiation. Hairless mice were irradiated with Westinghouse FS-40 tubes filtered to attenuate the radiation below 290 nm. Emission was mainly in the UVB range (peak, 313nm).

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We have developed a simple murine model to measure the effects on sebaceous glands of a variety of substances commonly found in topical formulations. Applications (0.2 ml) were made daily to the flanks of hairless albino female mice, for time periods varying from 4 to 9 days.

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We tested the ability of all-trans-retinoic acid to prevent corticosteroid-induced skin atrophy without lessening the anti-inflammatory effect of the steroids. Histologic study and skin-fold thickness in hairless mice treated topically with various steroids, followed by topical all-trans-retinoic acid, were used to measure prevention of atrophy. By both assessments, all-trans-retinoic acid prevented atrophy.

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We report a patient who had a spinal abscess due to a retained surgical sponge. Through the use of magnetic resonance imaging, the sponge was identified. Postoperative foreign body complications are discussed.

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