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2. Betaglukany: nadějné přírodní imunomodulační látky

Creator:
Petr Šíma
Format:
print
Type:
article, články, model:article, and TEXT
Subject:
Obecná biologie, přírodní látky, imunomodulancia, 2, and 57
Language:
Czech
Description:
Betaglucans are highly conserved structural polysacharids in the cell walls of bacteria, cyanobacteria, algae, seaweed, yeast, fungi, lichens, and some plants, particularly grain. They belong to a group of active natural substances commonly called biological response modifiers (BRM) and play a role as potent immune response stimulators in all multicellular animals. Their effects against infectious diseases and in cancer therapy have been described in many experimental research studies and human case histories but their functional mechanisms have not yet been fully elucidated. and Petr Šíma.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Česká společnost experimentální biologie rostlin

Creator:
Lubomír Nátr and Jana Albrechtová
Type:
article, články, model:article, and TEXT
Subject:
Obecná biologie, vědecké instituce a organizace, experimentální biologie, scientific institutions and organizations, experimental biology, 2, and 57
Language:
Czech
Description:
Czech Society of Experimental Plant Biology was established in the early 90s in the last century. It followed-up to an activity of the Physiological Section of Czech Botanical Society. Gaining the independence of the Physiological Society, a new professional society was established. In 2008, it was transformed to the Czech Society of Experimental Plant Biology. Thanks to the great development of methods in the last 20 years, especially of molecular biology used to investigate plants on different levels, the term “physiology” became limited, therefore it is nowadays often replaced by a more exact “experimental plant biology”. Naturally, this worldwide trend asserts oneself also in our countries. The research fields included are not restricted to the pure laboratory or theoretical ones. and Lubomír Nátr, Jana Albrechtová.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6. Effect of chronic cadmium exposure on antioixdant defense system in some tissues of rats: protective effect of selenium

Creator:
Ognjanović, B. I., Marković, S. D., Pavlović, S. Z., Žikić, R. V., Saičić, Z. S., and Štajn, A. Š.
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Obecná biologie, experimentální biologie, antioxidanty, kadmium, selen, potkan, experimental biology, antioxidants, cadmium, selenium, Rattus norvegicus, antioxidant defense system, 2, and 57
Language:
English
Description:
The effects of selenium (Se) on antioxidant defense system in liver and kidneys of rats with cadmium (Cd)-induced toxicity were examined. Cd exposure (15 mg Cd/kg b.m./day as CdCl2 for 4 weeks) resulted in increased lipid peroxidation (LP) in both organs (p<0.005 and p<0.01). Vitamin C (Vit C) was decreased in the liver (p<0.005), whereas vitamin E (Vit E) was increased in the liver and kidneys (p<0.005 and p<0.05) of Cd-exposed animals. Superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were decreased in both tissues (p<0.05 and p<0.005), whereas catalase (CAT) activity was decreased only in liver (p<0.005). Glutathione S-transferase (GST) increased in both tissues (p<0.005 and p<0.01). Treatment with Se (0.5 mg Se/kg b.m./day as Na2SeO3 for 4 weeks) significantly increased liver and kidneys SOD and GSH-Px activities (p<0.05 to p<0.005), as well as CAT and GST activities only in the liver (p<0.01). In animals exposed to Se, both the concentrations of Vit C (p<0.01) and Vit E (p<0.005) were increased in both tissues. Co-treatment with Se resulted in reversal of oxidative stress with significant decline in analyzed tissues Cd burden. Our results show that Se may ameliorate Cd-induced oxidative stress by decreasing LP and altering antioxidant defense system in rat liver and kidneys and that Se demonstrates the protective effect from cadmium-induced oxidative damage., B. I. Ognjanović, S. D. Marković, S. Z. Pavlović, R. V. Žikić, A. Š. Štajn, Z. S. Saičić., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

9. Nanobiofotonika: od lasera k živej bunke

Creator:
Chorvát, Dušan and Chorvátová, Alžbeta
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
lasery, biofotonika, lasers, biophotonics, 535.8, 57, 6, and 535
Language:
Czech and English
Description:
Nanobiophotonics is one of the most recent interdisciplinary scientific disciplines that originated at the frontiers of nanotechnology, photonics and biomedical sciences. The aim of nanobiophotonics is to transfer the medical diagnostics and therapy to the level of individual proteins and biologically active molecules, acting as cornerstones of the living cell. One of the key roles in its advancement can be attributed to the development of ultrafast pused lasers. These allowed to cross-combine spectroscopic, imaging and time-resolved methods and provide complex, multi-modal information about biological structures and phenomena on the nanometer scale. In our contribution we give an overview of the most important moments mapping the path from the discovery of the first laser to the current state of nanobiophotonic technologies in the world, and perspectives of this new scientific field in Slovakia., Nanobiofotonika je jedným z najmladších interdisciplinárnych vedeckých smerov, ktorý vznikol na pomedzí nanotechnológií, fotoniky a biomedicínskych vied s cieľom preniesť medicínsku diagnostiku a terapiu na úroveň proteínov a biologicky aktívnych molekúl - základných jednotiek živej bunky. Kľúčovú úlohu v jeho rozvoji má predovšetkým vývoj pulzných laserov s ultrakrátkymi impulzmi, ktoré umožnili prepojiť spektroskopické, zobrazovacie a časovo rozlíšené metódy a poskytujú dnes komplexnú multimodálnu informáciu o biologických štruktúrach a javoch na nanometrovej škále. V našom príspevku uvádzame prehľad vybraných významných momentov mapujúcich cestu od objavenia prvého lasera cez súčasny stav nanobiofotonických technológií k perspektívam tejto novej vednej oblasti na Slovensku., Dušan Chorvát ml., Alžbeta Chorvátová., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public