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In-vivo and ex-vivo models for superficial mycosis
Míková, Ivana ; Hubka, Vít (advisor) ; Julák, Jaroslav (referee)
12. 5. 2016 In vivo a ex vivo modely povrchových mykóz (bakalářská práce) Ivana Míková Abstract In my bachelor thesis I have dealt with the importance of using the laboratory animals (in vivo models) and artificial tissue (ex vivo models) for studying the superficial mycosis. The purpose of using these models is especially to clarify the pathogenesis of illness (the pathogenʼs penetration into the organism, the clinical, histopathological and immunological changes) or testing of new treatments. Selection of a suitable and susceptible model, methodics of preparation of the inoculum and preparation of the model before inoculation are crucial for the successful creation of the experiment. Small rodents (guinea-pig, mouse, rat), skin equivalents and keratin films made from human hair, nails and animal hooves are the most used in vivo and ex vivo models. This bachelor thesis summarizes their advantages and disadvantages. Furthermore, the work deals with the types of dermatophytes and thermally dimorphic fungi used for successful inoculation and with the specific purpose of their use. The dermatophytes (Trichophyton, Microsporum, Epidermophyton, Arthroderma) and thermally dimorphic fungi (Blastomyces and Sporothrix) are the most often researched originators of the superficial mycosis. Both groups cause the animal...
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Prevention of recurrent nasal polyposis in patients with detection of enterotoxi n producing Staphylococcus aureus strains
Schalek, Petr ; Petráš, Petr (advisor) ; Julák, Jaroslav (referee) ; Malina, Jiří (referee) ; Vokurka, Jan (referee)
Enterotoxins produced by Staphylococcus aureus can act as superantigens and thus, regardless of the antigenic specificity, influence the course of chronic rhinosinusitis with nasal polyps (NP). The aim of this study was to determine if antibiotic treatment administered after endoscopic sinus surgery (ESS) for NP can positively influence the course of the disease compared to placebo. After ESS, 23 patients which tested positive, in a perioperative culture, for SA strains producing enterotoxins A - E and TSST-1, were randomized into 2 groups. Group A (13 patients), which in addition to treatment with intranasal steroids and saline douches, received oral anti-staphylococcal antibiotics (according to the minimal inhibitory concentration) for 3 weeks. Group B (10 patients) received a placebo. Both groups were compared preoperatively, then again at 3 and 6 months after surgery using a symptom-specific score, an endoscopic score and the SNOT-22 quality of life questionnaire. Slightly better results were achieved in patients who received antibiotic therapy. However, the differences were not statistically significant. The biggest difference was seen on the endoscopic score 3 months after surgery. This difference clearly favored patients in group A. Regardless of post-operative treatment, approximately 30 % of...
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In-vivo and ex-vivo models for superficial mycosis
Míková, Ivana ; Hubka, Vít (advisor) ; Julák, Jaroslav (referee)
12. 5. 2016 In vivo a ex vivo modely povrchových mykóz (bakalářská práce) Ivana Míková Abstract In my bachelor thesis I have dealt with the importance of using the laboratory animals (in vivo models) and artificial tissue (ex vivo models) for studying the superficial mycosis. The purpose of using these models is especially to clarify the pathogenesis of illness (the pathogenʼs penetration into the organism, the clinical, histopathological and immunological changes) or testing of new treatments. Selection of a suitable and susceptible model, methodics of preparation of the inoculum and preparation of the model before inoculation are crucial for the successful creation of the experiment. Small rodents (guinea-pig, mouse, rat), skin equivalents and keratin films made from human hair, nails and animal hooves are the most used in vivo and ex vivo models. This bachelor thesis summarizes their advantages and disadvantages. Furthermore, the work deals with the types of dermatophytes and thermally dimorphic fungi used for successful inoculation and with the specific purpose of their use. The dermatophytes (Trichophyton, Microsporum, Epidermophyton, Arthroderma) and thermally dimorphic fungi (Blastomyces and Sporothrix) are the most often researched originators of the superficial mycosis. Both groups cause the animal...
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Prevention of recurrent nasal polyposis in patients with detection of enterotoxi n producing Staphylococcus aureus strains
Schalek, Petr ; Petráš, Petr (advisor) ; Julák, Jaroslav (referee) ; Malina, Jiří (referee) ; Vokurka, Jan (referee)
Enterotoxins produced by Staphylococcus aureus can act as superantigens and thus, regardless of the antigenic specificity, influence the course of chronic rhinosinusitis with nasal polyps (NP). The aim of this study was to determine if antibiotic treatment administered after endoscopic sinus surgery (ESS) for NP can positively influence the course of the disease compared to placebo. After ESS, 23 patients which tested positive, in a perioperative culture, for SA strains producing enterotoxins A - E and TSST-1, were randomized into 2 groups. Group A (13 patients), which in addition to treatment with intranasal steroids and saline douches, received oral anti-staphylococcal antibiotics (according to the minimal inhibitory concentration) for 3 weeks. Group B (10 patients) received a placebo. Both groups were compared preoperatively, then again at 3 and 6 months after surgery using a symptom-specific score, an endoscopic score and the SNOT-22 quality of life questionnaire. Slightly better results were achieved in patients who received antibiotic therapy. However, the differences were not statistically significant. The biggest difference was seen on the endoscopic score 3 months after surgery. This difference clearly favored patients in group A. Regardless of post-operative treatment, approximately 30 % of...
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Germicidal effects of corona discharge on microorganisms
Dymáčková, Laura ; Kříha, Vítězslav (advisor) ; Julák, Jaroslav (referee)
This thesis following up the studies about decontamination effects of low-temperature plasma generated by corona discharge. Two species of bacteria, Escherichia coli and Staphylococcus epidermidis, were exposed in two separate sets of experiments. Bacterial suspensions were treated by point-to-plane corona discharge directly on surface of semisolid culture medium, the Mueller-Hinton agar, placed in Petri Dishes of 5 cm diameter. The point electrode was realized by the tip of a 0.7 mm syringe needle, connected to the source of direct current high voltage. The plane electrode was formed by the surface of an ion-conducting semisolid cultivation medium. A micrometer screw allowed precise setting the 4 mm distance of the point electrode from the anode surface. The samples were exposed to the corona discharge with current of 25μA - 150μA range. The treatment duration is given by constant exposed charge (18, 27, 36 and 54 mC) condition. After exposition, all Petri dishes were immediately cultivated at 37 žC overnight. After cultivation followed evaluation of inhibition zone areas, that was caused by action of electric charge. The state of the cultures was quantitatively assessed by measuring of the growth inhibition zones, where a complete growth inhibition took place. The behaviors of these exposures were...
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