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1
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Effects of peroxisome proliferator-activated receptors-gamma ligands on dextran sodium sulphate-induced colitis in rats

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Celinski K., Dworzanski T., Korolczuk A., Piasecki R., Slomka M., Madro A., Fornal R.
Journal of Physiology and Pharmacology
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2011
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tom 62
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nr 3
Recent studies indicate the involvement of peroxisone proliferator-activated receptor- (PPAR-) in the inflammatory reaction. The exact mechanism of PPAR- action has not been elucidated. It is supposed that PPAR- regulates transcription of genes responsible for encoding cytokines involved in the inflammatory response. The latest studies, carried out to explain the pathogenesis of non-specific colitis, confirm beneficial effects of PPAR- agonists on attenuation of colon inflammation. The aim of the present study was to assess the effects of nuclear PPAR- activity on the course of experimental acute colitis induced by intragastric administration of dextran sodium sulphate (DSS) using the PPAR- agonist rosiglitazone and the antagonist BADGE in rats. Colitis in Wistar rats was induced by 1.5% DSS administered in drinking water for 8 days. Animals with induced colitis received rosiglitazone, bisphenol A diglycidyl ether (BADGE) or both substances. After decapitation, colons were macroscopically and histopathologically evaluated. Levels of interleukin-1ß (IL-1ß), interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor- (TNF-) and myeloperoxidase (MPO) were determined in serum and colon homogenates using ELISA. In rats with experimentally induced colitis receiving rosiglitazone, the inflammatory reaction was found to be markedly limited; ulceration, oedema and infiltration activity were reduced. The activated PPAR- inhibit the expression of proinflammatory factors, such as IL-6, TNF-, and neutrophil chemotaxis, which was evidenced by MPO reduction in serum and colon homogenates mediated by rosiglitazone. The positive effects of rosiglitazone on expression of IL-10 were also demonstrated. During the short period of observation, BADGE did not increase histopathological inflammatory markers.
2
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Comparison of the anti-inflammatory and therapeutic actions of PPAR-gamma agonists rosiglitazone and troglitazone in experimental colitis

100%
Celinski K., Dworzanski T., Fornal R., Korolczuk A., Madro A., Slomka M.
Journal of Physiology and Pharmacology
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2012
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tom 63
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nr 6
3
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Comparison of anti-inflammatory properties of peroxisome proliferator-activated receptor gamma agonists rosiglitazone and troglitazone in prophylactic treatment of experimental colitis

100%
Celinski K., Dworzanski T., Fornal R., Korolczuk A., Madro A., Brzozowski T., Slomka M.
Journal of Physiology and Pharmacology
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2013
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tom 64
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nr 5
4
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Non-variceal upper gastrointestinal bleeding-guidelines on management

100%
Celinski K., Cichoz-Lach H., Madro A., Slomka M., Kasztelan-Szczerbinska B., Dworzanski T.
Journal of Physiology and Pharmacology. Supplement
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2008
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tom 59
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nr 2
In gastroenterology non-variceal upper gastrointestinal bleeding is health hazard. Frequency of occurrence accounts for 40-150 cases per 100000 inhabitants with death rate of 7-14%. Researches which goal is to improve treatment effectiveness as well as to establish standardized procedures for managing patients with symptoms of non-variceal upper gastrointestinal bleeding; have been conducted since many years. At the moment of admission, designed standards enable appropriate elaboration of patients’ health state, referral to the right clinic and implementation of the most accurate treatment methods. Increase of suppression of primary bleeding as well as prevention of recurrence is associated with dynamic development of endoscopic treatment methods as well as with optimization of pharmacological treatment. In significant percentage, efficiency of non – variceal bleedings treatment depends on clinic’s character (availability of equipment, experience of personnel) and on cooperation between several specialists (including gastroenterologist, surgeon, anesthetist, operative radiologist). Aim of the work is to present the latest evaluation of the mentioned subject, based on accessible literature. This work includes the basic principles for determination of bleeding intensity and risk of its recurrence as well as directions referring to fluids resuscitation and to monitoring of patients. Information on currently applied endoscopic methods for inhibition of non variceal upper gastrointestinal bleeding (injection, mechanical and thermo-coagulation techniques), comparison of their efficiency and possibility of application is provided in the work. The paper work also presents the newest directives for pharmacological treatment and guidelines for possible surgical treatment.
5
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Influence of the peroxisome proliferator-activated receptor gamma (PPAR-gamma) agonist, rosiglitazone and antagonist , biphenol-A-diglicydyl ether (BADGE) on the course of inflammation in the experimental model of colitis in rats

84%
Dworzanski T., Celinski K., Karolczuk A., Slomka M., Radej S., Czechowska G., Madro A., Cichoz-Lach H.
Journal of Physiology and Pharmacology
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2010
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tom 61
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nr 6
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