alexa Immunostimulatory effect of natural clinoptilolite as a possible mechanism of its antimetastatic ability.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Bioequivalence & Bioavailability

Author(s): Pavelic K, Katic M, Sverko V, Marotti T, Bosnjak B,

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Abstract PURPOSE: Many biochemical processes are closely related to ion exchange, adsorption, and catalysis. Zeolites reversibly bind small molecules such as oxygen or nitric oxide; they possess size and shape selectivity, the possibility of metalloenzyme mimicry, and immunomodulatory activity. These properties make them interesting for pharmaceutical industry and medicine. METHODS: The experiments were performed on mice. Different biochemical and molecular methods were used. RESULTS: Micronized zeolite (MZ) administered by gastric intubation to mice injected with melanoma cells significantly reduced the number of melanoma metastases. In mice fed MZ for 28 days, concentration of lipid-bound sialic acid (LSA) in serum increased, but lipid peroxidation in liver decreased. The lymphocytes from lymph nodes of these mice provoked a significantly higher alogeneic graft-versus-host (GVH) reaction than cells of control mice. After i.p. application of MZ, the number of peritoneal macrophages, as well as their production of superoxide anion, increased. However, NO generation was totally abolished. At the same time, translocation of p65 (NFkappaB subunit) to the nucleus of splenic cells was observed. CONCLUSION: Here we report antimetastatic and immunostimulatory effect of MZ and we propose a possible mechanism of its action. This article was published in J Cancer Res Clin Oncol and referenced in Journal of Bioequivalence & Bioavailability

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