Results of research by scientists from the Institute of Molecular Genetics of the ASCR have been published on the U.S. National Library of Medicine website. Their work on the STIM1-directed reorganization of microtubules in activated mast cells could help in fighting allergies. The study reports that activation of bone marrow-derived mast cells (BMMCs) induced by FcεRI aggregation or treatment with pervanadate or thapsigargin results in the generation of protrusions containing microtubules (microtubule protrusions). In the study, formation of these protrusions depended on the influx of extracellular Ca(2+). Changes in cytosolic Ca(2+) concentration also affected microtubule plus-end dynamics detected by microtubule plus-end tracking protein EB1. Experiments with knockdown or reexpression of STIM1, the key regulator of SOCE, confirmed the important role of STIM1 in the formation of microtubule protrusions. Although STIM1 in activated cells formed puncta associated with microtubules in protrusions, relocastion of STIM1 to a close proximity of cell membrane was independent of growing microtubules. In accordance with the inhibition of Ag-induced Ca(2+) response and decreased formation of microtubule protrusions in BMMCs with reduced STIM1, the cells also exhibited impaired chemotactic response to Ag. Institute geneticists proposed that rearrangement of microtubules in activated mast cells depends on STIM1-induced SOCE, and that Ca(2+) plays an important role in the formation of microtubule protrusions in BMMCs. and Petr Dráber a Pavel Dráber.
Pro dyslipidemii u pacientů s metabolickým syndromem je typické zvýšení triacylglycerolů, snížení HDL-cholesterolu a přítomnost malých aterogenních částic LDL; většina pacientů však nedosahuje ani cílových hodnot LDL-cholesterolu pro svoji kategorii rizika. Základní součástí léčby má být přístup nefarmakologický – snaha o změny životního stylu (redukce hmotnosti, změna stravovacích návyků, zvýšení fyzické aktivity). U osob v primární prevenci bez diabetu rozhoduje o nasazení farmakoterapie výše rizika fatální kardiovaskulární příhody ve výhledu 10 let (tabulky SCORE). U diabetiků a u pacientů v sekundární prevenci indikujeme farmakoterapii tehdy, není-li jejich LDL-cholesterol v cílových hodnotách. Primárním cílem léčby je LDL-cholesterol, farmakoterapii proto zahajujeme statiny. Pokud po dosažení cílového LDL-cholesterolu přetrvává hypertriglyceridemie nebo nízký HDL-cholesterol, je vhodné přidat ke statinu fenofibrát., Typical feature of dyslipidemia in patients with metabolic syndrome is increase triglycerides, decrease HDL-cholesterol and prezence of small atherogenic LDL particle; nevertheless majority of patients do not reach target level of LDL-cholesterol for their risk category as well. An essential part of treatment should be non-pharmacological approach – lifestyle changes (weight loss, change in eating habits, increased physical activity). In patients in primary prevention without diabetes decision about pharmacotherapy depend on their risk of fatal cardiovascular events in the perspective of 10 years (table SCORE). In diabetic patients and in patients in secondary prevention is pharmacotherapy indicated, unless their LDL-cholesterol does not reach its target values. The primary goal of treatment is LDL-cholesterol, so pharmacotherapy should be started with statins. If the target of LDL-cholesterol is reached and hypertriglyceridemia and/or low HDL-cholesterol persist, it is recommended to add fenofibrate to statin., and Vladimír Soška
Moderní perkutánní nefrolitotomie (percutaneous nephrolithotomy – PCNL) je bezpečná technika spojená s nízkou morbiditou. PCNL umožňuje odstranit většinu konkrementů a představuje preferovanou modalitu při léčbě větších a odlitkových močových kamenů. Pro dosažení bezpečného a úspěšného výsledku musí být operatér nezbytně obeznámen s důležitými aspekty variability anatomie, ostatními komorbiditami pacienta a potenciálními komplikacemi, které hrozí při tomto výkonu. Ačkoli pro vytvoření přístupové cesty během PCNL, odstranění konkrementu a uzavření přístupu existuje celá řada nejrůznějších technik, pro dosažení kýženého výsledku je nutné, aby operatér disponoval znalostmi všech v současné době dostupných technik., Modern-day PCNL is a safe procedure with low morbidity. It offers superior stone-free rates, and is the treatment of choice for larger or staghorn stones. In order to be done successfully and safely, surgeons should be aware of important variations in anatomy, patient comorbidities, and potential complications. Finally, although a variety of techniques exist for PCNL access, stone removal and exit from the kidney, surgeons should be well versed in available techniques and adhere fundamental principles of surgery to achieve the desired outcomes for their patients., and Knoedler J., Krambeck A.
The discussion study takes as its starting point the thinking, which Professor Šmajs and others presented in Filosofický časopis 6, 2013 on evolutionary ontology. The author shows an enduring aspect of evolutionary ontology: ontology as the product of human culture attains to knowledge that has the seeming character of objective truth - it thus expresses the true nature of the ontic order of nature. This is not, however, the usual nonsense of inconsistent philosophy. The author of the text identifies as lying behind the step Kantian and Hegelian strategies which make possible this shift from the order of culture to the order of nature. These strategies are (i) a sign of the grounding of Professor Šmajs´ ideas in early-modern thinking; and (ii) they are the cause of a strongly anthropocentric attitude, which unwittingly influences the system of evolutionary ontology. At the end of the study, the author points to the fact that it would be more appropriate for evolutionary ontology if its proponents were able to give up their early-modern argumentative approach, and thus rid themselves of their strong anthropocentrism. In this way they would be able to avoid the conceptual conflict which makes evolutionary ontology "frozen" from within., Radim Šíp., and Obsahuje poznámky a bibliografii