Monodisperse macroporous poly(glycidyl methacrylate) (PGMA) microspheres were used as a template for preparing porous silica particles. The starting polymer microspheres that were 9.3 μm in size were synthesized by multistep swelling polymerization using a modified Ugelstad technique. Subsequently, silica (SiO2) was deposited on the surface and inside the PGMA microspheres to produce poly(glycidyl methacrylate)-silica hybrid particles (PGMA-SiO2). Upon calcination of the PGMA-SiO2 microspheres, porous silica particles were formed. The morphology, particle size, polydispersity and inner structure of the silica microspheres were investigated by scanning and transmission electron microscopy. Thermogravimetric analysis and dynamic adsorption of nitrogen determined the amount of silica formed and its specific surface area. Compared with the starting PGMA microspheres, the size of the porous silica particles decreased by up to 30%. These porous silica microspheres are promising for chromotography and biomedical applications., S. Grama, D. Horák., and Obsahuje bibliografii
The genera Preptetos Pritchard, 1960 and Neopreptetos Machida, 1982 are redefined. The following species are described and/or recorded from marine fishes. From the Great Barrier Reef: Preptetos caballeroi Pritchard, 1960 in Naso annula-tus, N. brevirnslris and N. vlamingii·, P. xesuri (Yamaguti, 1940) in Zebrasoma veliferum and Z. scopas; Preptetos cannoni Barker, Bray et Cribb, 1993 in Siganus dolialus and S. fuscescens', Preptetos laguncula sp. n. in Naso unicornis (type-host); P. impar sp. n. in Lutjanus erythropterus (type-host) and L. malabaricus·, Neopreptetos arusettae Machida, 1982 in Pomacanthus semicirculatus·, and N. kurochkini (Toman, 1989) in Chaetodontoplus meredithi. From southwestern Australia: Preptetos rotto sp. n. in Nelusetta ayraudi (type-host), Neosebastes pandus, Oplegnathus woodwardi and Pagrus auratus. The new combination Preptetos trulla (Linton, 1907) (originally Distomum then Lepocreadium) is made and the species Lepocreadium areolatum (Linton, 1900) is considered likely to belong in Preptetos.
Some free-living amoebae are a potential threat to human health. The best known species are those of the genus Acanthamoeba Volkonsky, 1931, which cause Acanthamoeba keratitis, granulomatous amoebic encephalitis and other forms of tissue inflammation. The aim of the present study was to search for potential pathogenic genotypes of free-living amoeba in the sand in children's playgrounds. Our results confirmed that free-living amoebae were present in all examined playgrounds. Sequences of the 18S rDNA have shown that all isolated potentially pathogenic strains of amoebae belong to genotype T4 of Acanthamoeba. The potential pathogenicity of isolates was confirmed on mice. The presence of pathogenic amoebae in the examined sand may be a potential source of human infection., Marcin Cholewiński, Piotr Solarczyk, Monika Derda, Agnieszka Wojtkowiak-Giera, Edward Hadaś., and Obsahuje bibliografii
An examination of a sample of European eels, Anguilla anguilla (L.), collected from Lake Bracciano near Rome in 1993, the only known European locality with the occurrence of the introduced swimbladder nematode Anguillicola novaezelandiae Moravec et Taraschewski, 1988, revealed for the first time the presence of two Anguillicola species, A. novaezelandiae and A. crassus. In view of the investigations carried out by current authors in Bracciano Lake in the years 1982-1992, it is apparent that the latter species has been introduced into the lake quite recently, where it quickly became a dominant species. The development of A. novaezelandiae was experimentally studied in the copepod intermediate host, Cyclops strenuus, for the first time. The copepods were infected with nematode second-stage larvae at 21-22°C; fully developed infective third-stage larvae were obtained 13 days p.i. The general morphology of individual larval stages of A. novaezelandiae was similar to that of larvae of the related species Λ. crassus.
The fault displacement monitoring network EU-TecNet was established to define microdisplacements across faults in the territory of Central Europe (www.tecnet.cz) using three-dimensional optical-mechanical extensometers. The results of long-term neotectonic activity obtained from two caves localized in the eastern part of the Slovenský kras Mts. (SE Slovakia) show generally NE-SW oriented dilatation. This orientation is in a good accordance with the orogen-parallel extension monitored in the Western Carpathians. Differing short-lasting trends were distinguished in 2011-2012 and 2013-2015, which supports the significance of the tectonic pulse at the end of 2012 and the beginning of 2013. Moreover, simultaneous short-lasting faulting occurred at both sites under the transtensional tectonic regime, where the principal maximum compressional axis operated in a NW-SE direction (σ1). The observed results were compared to data from monitoring points in distant areas of the European plate. and Briestenský Miloš, Hochmuth Zdenko, Littva Juraj, Hók Jozef, Dobrovič Roman, Stemberk Josef, Petro Ľubomír, Bella Pavel.
Cíl studie: Hlavním cílem studie bylo srovnat výsledky stanovení presepsinu s výsledky rutinně používané metody ke stanovení prokalcitoninu (PCT) u pacientů v septickém stavu, na jednotlivých kazuistikách pak popsat diagnostický a prognostic - ký význam presepsinu vedle PCT a jejich případné shodné či odlišné vlastnosti. Materiál a metody: Ze skupiny 70 pacientů, kteří se v daném období léčili ve FN Brno s diagnózou sepse, bylo vybráno 31 jedinců, u kterých byl delší dobu monitorován prokalcitonin a CRP. U těchto pacientů jsme stanovili presepsin. Při vyhod - nocení studie byla srovnávána skupina pacientů, kteří sepsi přežili (23 pacientů), se skupinou zemřelých (8 pacientů). Čtyři kazuistiky byly popsány detailně. K analýze presepsinu byla využita chemiluminiscenční enzymoimunoanalytická metoda na analyzátoru PATHFAST od firmy Mitsubishi Chemical. Výsledky: U vybraného souboru byly srovnány koncentrace presepsinu, prokalcitoninu a CRP mezi skupinou přeživších pacientů a těch, kteří zemřeli. K hodnocení výsledků byly použity koncentrace presepsinu, PCT a CRP při příjmu či v době stanovení diagnózy sepse, při ukončení monitorování sepse a v době dosažení maximálních hodnot sledovaných parame - trů. Statisticky významný rozdíl mezi skupinou zemřelých a uzdravených byl zaznamenán u parametrů získaných při příjmu a v době ukončení monitorování sepse, a to jak u presepsinu (P=0,023 resp. P=0,002), tak u prokalcitoninu (P=0,021 resp. P=0,0003). Na vybraných kazuistikách je vidět, že při špatné prognóze zůstává presepsin na rozdíl od prokalcitoninu vyso - ký. Závěr: Presepsin je podobně jako PCT vhodný marker pro diagnostiku, monitorování i prognózu sepse. Dle našich výsledků potvrzených nejnovějšími literárními údaji se dokonce jeví jako lepší prognostický marker než prokalcitonin, Objective: To compare the results of presepsin determination with the results of the routinely used method of procalcitonin (PCT) determination on patients with sepsis. We use individual casuistries to describe the diagnostic significance of prese - psin compared with PCT and their identical and different properties. Material and Methods: From the original cohort of patients treated for sepsis in University Hospital Brno, 31 individuals with long-term monitoring of procalcitonin and CRP sepsis markers were selected, and measured simultaneously for presepsin. The patients were further divided into two groups - 23 survivors and 8 non-survivors. Four casuistries are described in detail.Analysis of presepsin was carried out using chemiluminescent enzyme immunoassay on the fully automated POCT instrument PATHFAST from Mitsubishi Chemical. Results: The concentration of presepsin and PCT was compared between survivors and non-survivors. The evaluation of the results was based on samples from the first day after admission or development of sepsis, the day when the para - meters reached the maximum value, and the date when monitoring of the septic condition was terminated (termination of hospitalization, exitus). A statistically significant difference between both groups was found at admission and at the end of sepsis monitoring for both presepsin (P=0.023 resp. P=0.002) and PCT (P=0.021 resp. P=0.0003). The given casuistries demonstrate that presepsin stays high in cases with a bad prognosis when compared to PCT. Conclusions: Like PCT, presepsin is a suitable marker for diagnosis, monitoring and prognosis of sepsis. Our results and findings in the latest literature even indicate that presepsin is superior to procalcitonin as a prognostic marker of sepsis., Beňovská M., Bučková D., Petříková D., Stašek J., Gottwaldová J., and Literatura
Plastination is a preservation method for biological specimens, with important advantages over classic conservation techniques with formaldehyde or alcohol. Plastinated specimens are dry, odourless, and free of carcinogenic and toxic solutions. There are only few references about the plastination of parasites. Moreover, there is no information on the effect of plastination on the morphology and morphometry of these animals. The aim of this study was to define a plastination protocol to preserve various species of parasites, namely the nematodes Parascaris equorum (Goeze, 1782); Ascaris suum Goeze, 1782 and Dirofilaria immitis (Leidy, 1856); the acanthecephalan Macracanthorhynchus hirudinaceus (Pallas, 1781); the trematodes Fasciola hepatica Linnaeus, 1758 and Dicrocoelium dendriticum (Rudolphi, 1819) and the tapeworm Taenia sp. in the best morphological and morphometric conditions. Results showed that some individuals suffered collapse (P. equorum, A. suum, and D. dendriticum). However, other parasites presented good results with almost no change after plastination (D. immitis, M. hirudinaceus and F. hepatica). In conclusion, conventional plastination allowed anatomical preservation of all helminths tested, but modifications to the protocol are needed to prevent collapse., Moisés Gonzálvez, Juana Ortiz, María Navarro, Rafael Latorre., and Obsahuje bibliografii
Bats of the family Phyllostomidae are common hosts to streblids known as bat flies. Here, we discuss the component community, prevalence and intensity of infection with species of Streblidae on an assemblage of phyllostomid bats in the Cafuringa Environmental Protection Area (APA Cafuringa) in the core area of the Cerrado in Central Brazil. A total of 1 841 streblid individuals of 24 species occurred on 752 bats of 14 species. Ten species of streblids infected Glossophaga soricina (Pallas), whereas seven or fewer streblid species infected the other bat species. Nine bat fly species presented a prevalence of more than 50%, whereas some differences in the abundance of bat flies among hosts were observed. Strebla wiedemanni Kolenati, 1856 and Trichobius furmani Wenzel, 1966 were more host-specific compared to the other streblids, and they occurred in greater abundance on their preferred hosts. Trichobius uniformis Curran, 1935 and Strebla mirabilis (Waterhouse, 1879) were the least host-specific, occurring on five and six hosts, respectively., Ludmilla M. S. Aguiar, Yasmine Antonini., and Obsahuje bibliografii
Práce je zaměřena na problematiku kouření u lékařů a zdravotnických pracovníků a na názory studentů medicíny na tento problém v souvislosti s jejich budoucí intervencí k zanechání kouření u svých pacientů. Průzkum na Lékařské fakultě Ostravské univerzity v Ostravě byl proveden pomocí standardizovaného dotazníku mezinárodní studie GHPSS u 255 studentů všeobecného lékařství 1.–4. ročníku. U studentů bylo zjišťováno kuřáctví a to nejen cigaret, ale i doutníku, vodní dýmky nebo šňupání tabáku. Byly zjišťovány názory na současnou protikuřáckou politiku a na specifickou úlohu zdravotníků v podpoře odvykání kouření. Z výsledku průzkumu vyplývá, že kouří 25 % všech studentů. Byl zjištěn statisticky významný rozdíl ve výskytu kuřáctví mezi jednotlivými ročníky. Studenti nižších dvou ročníků byli častějšími uživateli tabákových výrobků než studenti vyšších ročníků. Většina studentů si je vědoma, že je nutné zaznamenávat u pacientů anamnézu kouření jako součást osobní anamnézy., The paper deals with smoking among doctors and medical personnel and the opinions of medical students regarding this problem in terms of their future intervention as doctors in helping their patients to stop smoking. A questionnaire survey among 255 medical students in the 1st to 4th years of study was performed at the Faculty of Medicine, University of Ostrava using the standardised to GHPSS international study questionnaire. Consumption of cigarettes water pipes, cigars and snuff was evaluated, as well as opinions on current anti smoking policy and the specific role of doctors in prevention of smoking. Results showed that 25% of students are smokers with statistically significant differences among individual years of study. Students in the first two yars of study used tobacco product more often than the highest years. The majority of students are aware of the fact that smoking status should be included in patient anamnesis., Jana Povová, Andrea Dalecká, Hana Tomášková, Kateřina Vařechová, Vladimír Janout, and Literatura