Professor of veterinary sciences employed at the Faculty of Veterinary Medicine of the University of Warmia and Mazury in Olsztyn. Research interests focused on structure and physiology of the pineal gland, in particular: 1) species heterogeneity in the mechanisms regulating melatonin secretion in mammals and birds, 2) comparative analysis of the pineal gland structure, 3) quantitative characterization of indole metabolism in the pineal gland. The most important achievements in the research on the pineal gland and melatonin: 1) demonstration of a new mechanism of melatonin secretion control in the mammalian pineal gland, 2) characterization of the adrenergic regulation of melatonin secretion in the pig pineal gland, 3) development of a new analytical method based on the HPLC technique, which allows simultaneous determination of 11 indole compounds in the pineal gland, 4) description of species differences in the metabolism of indoles in the avian pineal gland. In addition, Prof. Bogdan Lewczuk performs research on the effects of toxins produced by fungi and cyanobacteria on the digestive system and on innovative methods of ultrastructural imaging of cells and tissues.

Prof. dr hab. Bogdan Lewczuk