Telomerase activity in melanocytic lesions: A potential marker of tumor biology.

Telomerase activation, being a cardinal requirement for immortalization, is a crucial step in the development of malignancy. With a view toward diagnostic and biological aspects in melanocytic neoplasia, we investigated the relative levels of telomerase activity in 72 nevi and 16 malignant melanomas by means of a modified telomeric repeat amplification protocol (TRAP) assay, including an internal amplification standard. We further compared telomerase activity with the expression of two different proliferation-specific proteins, Ki-67 and repp86, a protein expressed exclusively in the cell cycle phases S, G2, and M.

[Interleukin-13 in the nasal lavage of pollinosis patients after specific intranasal challenge].

The unique properties of interleukin-13 have drawn the attention of investigators to its role in atopic diseases and in the mechanism of specific immunotherapy. The aim of this paper was to determine whether the presence of interleukin-13 will, apart from interleukina-4, be found in the nasal lavage after specific challenge and if the levels of these cytokines will differ. The studies included 13 patients in whom grass and rye pollen allergy was confirmed by the case history, skin tests and the presence of specific IgE in the blood serum.

The effects of a new generation of H1 antihistamines (cetirizine and loratadine) on histamine release and the bronchial response to histamine in atopic patients.

The effects of two selective H1 receptor blockers, cetirizine and loratadine, in comparison with placebo, on basophil histamine release and the bronchial response to histamine were assessed. The studies were performed in a group of 18 patients with pollinosis and 22 with atopic asthma. Both tests were performed before and after medication.

[Efficacy and tolerance of allergenic extracts Allergovit and Novo-Helisen depot in immunotherapy of allergic diseases].

The aim of this study was to evaluate the efficacy, tolerance and immunogenity of allergenic extracts: Allergovit and Novo-Hellisen depot (produced by Allergopharma--Germany), used for sIT in pollinosis and house dust mite allergy. The treatment was carried out on 40 patients for three years. The evaluation included the results of a physical examination, the score of symptoms from self-observations and the consumption of antiallergic medicines.

[An immunologic evaluation of Polish pollen extract Catalet "C" and Catalet "D" in patients with pollinosis].

In a group of 41 hay fever and/or seasonal asthma patients, sensitive to weed or tree pollens the influence of specific immunotherapy (sIT) on the level of IgE, specific IgE and IgG4, and HR induced by anti-IgE and specific allergens was evaluated. It was shown that both allergenic extracts, Catalet C and Catalet D, are really immunogenic, which is manifested in a decrease in specific IgE and in a marked increase in specific IgG4, after 2 years of sIT. In comparison with the placebo, the sensitivity of blood basophils to both specific allergens and non-specific factors significantly decreased.