Number of results to display per page
Search Results
12. Cell stratification, spheroid formation and bioscaffolds used to grow cells in three dimensional cultures
- Creator:
- Hrebíková, Hana, Čížková, Dana, Chvátalová, Jana, Pisal, Rishikaysh, Adamčik, Richard, Beznoska, Pavel, Díaz-Garcia, Daniel, and Mokrý, Jaroslav
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, práce podpořená grantem, and TEXT
- Subject:
- zvířata, buněčné kultury, buněčné linie, proliferace buněk--fyziologie, hepatocyty--fyziologie, lidé, myši, myoblasty, sféroidy buněčné--fyziologie, tkáňové inženýrství--metody, and tkáňové podpůrné struktury
- Language:
- English
- Description:
- The cell culture became an invaluable tool for studying cell behaviour, development, function, gene expression, toxicity of compounds and efficacy of novel drugs. Although most results were obtained from cell cultivation in two-dimensional (2D) systems, in which cells are grown in a monolayer, three-dimensional (3D) cultures are more promising as they correspond closely to the native arrangement of cells in living tissues. In our study, we focused on three types of 3D in vitro systems used for cultivation of one cell type. Cell morphology, their spatial distribution inside of resulting multicellular structures and changes in time were analysed with histological examination of samples harvested at different time periods. In multilayered cultures of WRL 68 hepatocytes grown on semipermeable membranes and non-passaged neurospheres generated by proliferation of neural progenitor cells, the cells were tightly apposed, showed features of cell differentiation but also cell death that was observable in short-term cultures. Biogenic scaffolds composed of extracellular matrix of the murine tibial anterior muscle were colonized with C2C12 myoblasts in vitro. The recellularized scaffolds did not reach high cell densities comparable with the former systems but supported well cell anchorage and migration without any signs of cell regression. and H. Hrebíková, D. Čížková, J. Chvátalová, R. Pisal, R. Adamčik, P. Beznoska, D. Díaz-Garcia, J. Mokrý
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
13. Cellular responses to egg-oil (charismon©)
- Creator:
- Bereiter-Hahn, Jürgen, Bernd, August, Beschmann, Heike, Eberle, Irina, Kippenberger, Stefan, Rossberg, Maila, Strecker, Valentina, and Zöller, Nadja
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, and TEXT
- Subject:
- zvířata, apoptóza--účinky léků, buněčné linie, pohyb buněk--účinky léků, proliferace buněk--účinky léků, buněčné dýchání--účinky léků, buňky kultivované, kur domácí, cytokiny--metabolismus, vejce, epidermis--cytologie, lidé, membránový potenciál mitochondrií--účinky léků, oleje--chemie--farmakologie, reaktivní formy kyslíku--metabolismus, sluneční spáleniny--farmakoterapie, and hojení ran--účinky léků
- Language:
- English
- Description:
- Egg-oil (Charismon©) is known for its beneficial action in wound healing and other skin irritancies and its antibacterial activity. The physiological basis for these actions has been investigated using cells in culture: HaCaT-cells (immortalized human keratinocytes), human endothelial cells in culture (HUVEC), peripheral blood mononuclear lymphocytes (PBML) and a full thickness human skin model (FTSM). Emphasis was on the influence of egg-oil on cell migration and IL-8 production in HaCaT cells, respiration, mitochondrial membrane potential, reactive oxygen (ROS)production and proliferation in HUVEC and HaCaT cells, cytokine and interleukin production in PBML and UV-light induced damage of FTSM. IL-8 production by HaCaT cells is stimulated by egg-oil whilst in phythemagglutinin-activated PBMLs production of the interleukins IL-2, IL-6, IL-10 and IFN-γ and TFN-α is reduced. ROS-production after H<sub>2</sub>O<sub>2</sub> stimulation first is enhanced but later on reduced. Respiration becomes activated due to partial uncoupling of the mitochondrial respiratory chain and proliferation of HaCaT and HUVEC is reduced. Recovery of human epidermis cells in FTSM after UV-irradiation is strongly supported by egg-oil. These results support the view that egg-oil acts through reduction of inflammatory processes and ROS production. Both these processes are equally important in cellular aging as in healing of chronic wounds. and J. Bereiter-Hahn, A. Bernd, H. Beschmann, I. Eberle, S. Kippenberger, M. Rossberg, V. Strecker, N. Zöller
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
14. Clinical case report of a large antrochoanal polyp
- Creator:
- Spadijer-Mirković, Cveta, Perić, Aleksandar, Vukomanović-Đurđević, Biserka, and Stanojević, Ivan
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, and TEXT
- Subject:
- mladiství, dospělí, diferenciální diagnóza, endoskopie, lidé, mužské pohlaví, sinus maxillaris, nosní polypy--diagnóza--patologie--chirurgie, chirurgie nosu--metody, nemoci vedlejších nosních dutin--diagnóza--patologie--chirurgie, and počítačová rentgenová tomografie
- Language:
- English
- Description:
- Antrochoanal polyps are benign lesions originating from the mucosa of the maxillary sinus. Nasal obstruction and rhinorrhea are their main symptoms. Their endoscopical and radiological appearance makes them relatively easy to diagnose. These polyps are usually presented unilaterally, although bilateral presentation is also possible. We described two cases of atypically giant antrochoanal polyps: in a 15-year-old child and in a 38-year-old man. In both cases, the diagnosis was done by nasal endoscopy and computed tomography (CT) of the paranasal sinuses and supported by histopathological analysis. In the first patient, the excised polyp had the histological characteristic of an angiomatous antrochoanal polyp. Because of their unusual dimension, the combined transoral and endonasal endoscopic approach was performed for complete polyp excision. We discussed the clinical, histopathological and immunohistochemical characteristics of choanal polyps in comparison to inflammatory nasal polyps, and the applicable surgical techniques for treatment of these polyps. and C. Špadijer-Mirković, A. Perić, B. Vukomanović-Đurđević, I. Stanojević
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
15. Concha bullosa mucopyocele: a case report
- Creator:
- Sari, Kamran, Gencer, Zeliha Kapusuz, and Kantekin, Yunus
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, kazuistiky, časopisecké články, and TEXT
- Subject:
- absces--komplikace--diagnóza--mikrobiologie--terapie, antibakteriální látky--terapeutické užití, endoskopie, ženské pohlaví, lidé, lidé středního věku, mukokéla--komplikace--diagnóza--mikrobiologie--terapie, nosní obstrukce--diagnóza--etiologie--terapie, nemoci nosu--komplikace--diagnóza--terapie, stafylokokové infekce--komplikace--diagnóza--terapie, Staphylococcus aureus, počítačová rentgenová tomografie, and skořepy nosní--abnormality
- Language:
- English
- Description:
- Concha bullosa (CB) is among the most common anatomic variations of sinonasal anatomy. Although usually asymptomatic, CB can occasionally cause nasal obstruction or headache. Obstructions within the mucociliary transport system can develop into a mucocele or mucopyocele. A 48-year-old female, with a history of progressive headache and nasal obstruction, was referred to our department. Paranasal sinus tomography revealed a nasal mass in the left nasal cavity resembling a mucopyocele in the middle turbinate. Under general anesthesia, the purulent material was aspirated, and the lateral part of the left turbinate was resected. Mucopyoceles are common within the paranasal sinuses, but uncommon with CB; thus, they should be considered in patients with a large hyperemic nasal mass. and K. Sari, Z. K. Gencer, Y. Kantekin
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
16. Crohn's disease: a role of gut microbiota and Nod2 gene polymorphisms in disease pathogenesis
- Creator:
- Hrnčířová, Lucia, Krejsek, Jan, Šplíchal, Igor, and Hrnčíř, Tomáš
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, práce podpořená grantem, přehledy, and TEXT
- Subject:
- Crohnova nemoc--genetika, gastrointestinální trakt--mikrobiologie, interakce genů a prostředí, genetická predispozice k nemoci, srovnávací asociační studie genomů, lidé, mikrobiota, signální adaptorový protein Nod2--genetika, and polymorfismus genetický
- Language:
- English
- Description:
- Crohn's disease is a chronic immune-mediated intestinal inflammation targeted against a yet incompletely defined subset of commensal gut microbiota and occurs on the background of a genetic predisposition under the influence of environmental factors. Genome-wide association studies have identified about 70 genetic risk loci associated with Crohn's disease. The greatest risk for Crohn's disease represent polymorphisms affecting the CARD15 gene encoding nucleotide-binding oligomerization domain 2 (NOD2) which is an intracellular sensor for muramyl dipeptide, a peptidoglycan constituent of bacterial cell wall. The accumulated evidence suggests that gut microbiota represent an essential, perhaps a central factor in the induction and maintaining of Crohn's disease where dysregulation of normal co-evolved homeostatic relationships between intestinal microbiota and host mucosal immune system leads to intestinal inflammation. Taken together, these findings identify Crohn's disease as a syndrome of overlapping phenotypes that involves variable influences of genetic and environmental factors. A deeper understanding of different genetic abnormalities underlying Crohn's disease together with the identification of beneficial and harmful components of gut microbiota and their interactions are essential conditions for the categorization of Crohn's disease patients, which enable us to design more effective, preferably causative, individually tailored therapy. and L. Hrnčířová, J. Krejsek, I. Šplíchal, T. Hrnčíř
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
17. Deep neck infections of odontogenic origin and their clinical significance. A retrospective study from Hradec Králové, Czech republic
- Creator:
- Doležalová, Helena, Zemek, Jaroslav, and Tuček, Luboš
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, and TEXT
- Subject:
- mladiství, dospělí, staří, staří nad 80 let, celulitis--diagnóza--epidemiologie--mikrobiologie, dítě, předškolní dítě, ženské pohlaví, lidé, mužské pohlaví, lidé středního věku, krk, retrospektivní studie, sociálně ekonomické faktory, nemoci zubů--komplikace--mikrobiologie, and mladý dospělý
- Language:
- English
- Description:
- INTRODUCTION: Cellulitis remains a very serious disease even today. Mortality, which varied between 10-40%, has been reduced owing to the standard securing of airway patency and use of an appropriate surgical treatment approach. MATERIALS AND METHODS: A total of 195 patients were hospitalised for cellulitis at the University Hospital in Hradec Králové during 2007-2011. The following parameters were evaluated: age, gender, dependence of incidence of the disease on the season of the year, frequency of attacks of the particular areas and their clinical characteristics, aetiology of the inflammation, types of patient complaints, prevalence of current systemic diseases, results of microbiological and selected laboratory analyses, socio-economic status of the patients, and duration of patient stay at the hospital. Statistical analysis was performed by using Pearson's correlation coefficient, the statistical significance level was p < 0.05. RESULTS: The mean age of the patients was 39.8 years. The group of 195 patients included 108 (55%) males and 87 (45%) females. The mean time between the first symptoms of the disease and admission to the Department was 5 days. From among the 195 patients, 116 (59.5%) were working persons, 79 (40.5%) were non-working (children, students, unemployed persons, women on maternity leave, retired people). The odontogenic origin of the disease was verified in 173 (88.7%) patients. In total, 65 (33.3%) patients had no coinciding complicating systemic disease, 22 (11.3%) patients had diabetes mellitus. The most frequent symptom of cellulitis was painful swelling, found in 194 (99.5%) patients, followed by jaw contracture, found in 153 (78.5%) patients. CONCLUSION: The results are largely very similar to those of previous studies performed in other countries, except that we found no correlation between the prevalence of cellulitis and the socio-economic status, nor have we confirmed Klebsiella pneumoniae sp. as the cause of cellulitis in patients with diabetes mellitus. and H. Doležalová, J. Zemek, L. Tuček
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
18. Denosumab associated with bone density increase and clinical improvement in a long-term hemodialysis patient. Case report and review of the literature
- Creator:
- Sulková, Sylvie, Horáček, Jiří, Šafránek, Roman, Gorun, Petr, Viklický, Ondřej, and Palička, Vladimír
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, kazuistiky, časopisecké články, práce podpořená grantem, přehledy, and TEXT
- Subject:
- dospělí, monoklonální protilátky humanizované--aplikace a dávkování--škodlivé účinky, kostní denzita, inhibitory kostní resorpce--aplikace a dávkování--škodlivé účinky, ženské pohlaví, lidé, chronické selhání ledvin--komplikace--terapie, osteoporóza--komplikace--farmakoterapie, and hemodialýza
- Language:
- English
- Description:
- Denosumab is a human monoclonal antibody representing a novel therapy of osteoporosis. Contrary to always other antiosteoporotic drugs, it is not contraindicated in advanced chronic kidney disease, as its pharmacokinetic does not differ from patients with normal kidney function. However, published case reports in chronic kidney disease (CKD) patients stopped the therapy after single dose because of hypocalcemia. We present a case of successful treatment of osteoporosis in a young hemodialysis patient with repeated denosumab doses. and Sylvie Dusilová Sulková, Jiří Horáček, Roman Šafránek, Petr Gorun, Ondřej Viklický, Vladimír Palička
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
19. Dental and oral lesions in HIV-positive individuals in East Bohemia - Czech Republic, single centre experience
- Creator:
- Šembera, Martin, Radochová, Vladimíra, and Slezák, Radovan
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, práce podpořená grantem, and TEXT
- Subject:
- dospělí, antiretrovirové látky--terapeutické užití, orální kandidóza--epidemiologie, kohortové studie, zubní kaz--epidemiologie, nekróza zubní dřeně--epidemiologie, ženské pohlaví, gingivitida--epidemiologie, HIV infekce--farmakoterapie--epidemiologie, lidé, lichen planus orální--epidemiologie, mužské pohlaví, lidé středního věku, nemoci úst--epidemiologie, nádory úst--epidemiologie, vředy v ústech--epidemiologie, parodontitida--epidemiologie, pulpitida--epidemiologie, Kaposiho sarkom--epidemiologie, sialadenitida--epidemiologie, stomatitida herpetická--epidemiologie, nemoci zubů--epidemiologie, mladý dospělý, and epidemiologie
- Language:
- English
- Description:
- BACKGROUND: Human immunodeficiency virus (HIV) continues to be a serious health issue and one of the world most devastating epidemics. An estimated 1.5 million people died from AIDS-related illnesses in 2013, and an estimated 37 million people with AIDS have died worldwide since the epidemic has begun. HIV infection is known for its oral manifestations which causes discomfort and pain for infected individuals. The objective of this study was to document oral conditions of HIV positive patients and the pattern and frequency of oral and dental lesions. METHODS: All patients with confirmed HIV infection who were treated at the Department of Dentistry, University Hospital in Hradec Králové, were examined. RESULTS: During the study period, 29 HIV positive patients were examined and treated--19 men, 10 women, with mean age of 32.9 years (range 22-58 years). 72.41% patients received ART. In total, all patients underwent 186 visits. The most frequent treatments were associated with teeth and periodontal lesions (71.80%), oral mucosal lesions were diagnosed and treated only in 3.96% cases. CONCLUSION: Since the introduction of ART, the frequency of oral mucosal lesions is minimal in patients with HIV infection. and M. Šembera, V. Radochová, R. Slezák
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
20. Detection of cervical lymph node micrometastases in patients with squamous cell carcinoma of the oral cavity, pharynx and larynx
- Creator:
- Čelakovský, Petr, Kalfeřt, David, Smatanová, Katarína, Chrobok, Viktor, and Laco, Josef
- Format:
- print, text, and regular print
- Type:
- model:article, article, Text, časopisecké články, práce podpořená grantem, and TEXT
- Subject:
- spinocelulární karcinom--patologie--chirurgie, ženské pohlaví, lidé, nádory hrtanu--patologie--chirurgie, lymfadenektomie--metody, mužské pohlaví, lidé středního věku, nádory úst--patologie--chirurgie, disekce krku--metody, mikrometastázy--diagnóza--patologie, staging nádorů, péče o pacienty - plánování, nádory hltanu--patologie--chirurgie, prediktivní hodnota testů, prognóza, prospektivní studie, and reprodukovatelnost výsledků
- Language:
- English
- Description:
- BACKGROUND: The goal of this prospective study was to determine the frequency of micrometastases in patients with squamous cell carcinoma (SCC) of the oral cavity, pharynx and larynx in whom elective neck dissection was indicated (cN0). PATIENTS AND METHODS: A total of 12 patients (10 males and 2 females) were enrolled in the study. The age ranged 42-73 years (median 62 years). Elective neck dissection was performed in all patients (8 ipsilateral, 4 bilateral) and a total of 256 lymph nodes were removed and sent for microscopic examination. RESULTS: The presence of tumor cells in cervical lymph nodes was found in 5/12 (42%) patients. Micrometastases of SCC were found in two patients and isolated tumor cells (ITC) in two other patients. In the remaining one patient with oropharyngeal SCC, a micrometastasis of papillary thyroid carcinoma (PTC) was detected. Positive lymph nodes were localized in level II in three patients with SCC of larynx, hypopharynx and tongue base, respectively, in level I in one patient with SCC of oral tongue and in level III in one patient with PTC. CONCLUSION: Our results indicate that SCC of head and neck has a high potential for creating micrometastases which frequency is higher compared to clinically detected macrometastases. Therefore, elective neck dissection or radiotherapy of the neck should be considered in patients with high risk of occult metastases or micrometastases. and P. Čelakovský, D. Kalfeřt, K. Smatanová, V. Chrobok, J. Laco
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public