|
|
Mechanisms of antigen presentation in the etiopathogenesis of celiac disease
Hudec, Michael ; Černá, Marie (advisor) ; Hrdý, Jiří (referee) ; Slavčev, Antonij (referee)
1 ABSTRACT Celiac disease (CeD) is a chronic autoimmune disease that develops as a response of the immune system to the presence of gluten in the small intestine. CeD is manifested not only by classic intestinal symptoms: abdominal pain, constipation or diarrhea, as well as complex less common symptoms: anemia, osteoporosis, psychiatric disorders or menstrual cycle disorders. HLA risk alleles predisposing to origin of celiac disease are HLA-DQ2 (DQA1*05:01 / DQB1*02:01) and HLA-DQ8 (DQA1*03:01 / DQB1*03:02). There are other celiac disease-associated polymorphisms outside of HLA locus (6p21.3) that are located in 5q32 and 19p13 regions with unclear connection to CeD development. HLA class II glycoproteins are expressed on antigen presenting cells (APC) that include dendritic cells, macrophages and B cells. Monocytes are one of several possible dendritic cell precursors that circulate in the bloodstream. Deviations in the frequency of intermediate monocytes are directly associated with autoimmune disorders such as Crohn's disease or rheumatoid arthritis. It is known that the monocytes of CeD patients show pro-inflammatory reaction in the presence of gluten. It means that, in the context of CeD, the response to gluten arises earlier than the activation of gluten-specific T cells. The conventional way of direct...
|
|
|
How social networks affect celiacs'diets
Pretlová, Anna ; Háša, Marek (advisor) ; Hájková, Karolína (referee)
This paper examines the influence of social networks on the diet of celiacs. The aim was to investigate how social networks, specifically Facebook, Instagram, YouTube, Twitter and Pinterest, can influence the preparation, purchase and consumption of gluten-free products. The chosen research method was quantitative analysis. Results were obtained from Czech and a few Slovak celiacs and people with gluten allergy with help of a questionnaire survey followed by descriptive analysis. The questionnaire itself was disseminated on the social networks Instagram, Facebook and WhatsApp. The final sample included 264 from the original 279 respondents. The results show that the use of social networking sites is popular among patients with celiac disease and gluten-free diets and that users benefit from it. It was also revealed that the most useful social networks are Instagram amd Facebook. On the other hand, YouTube, Twitter and Pinterest fell completely in the evaluaion. The main reason for this is the small amount of beneficial information. When it comes to eating, celiacs are mainly looking for new recipes, products and places that offer gluten-free meals, according to the results. In addition to extend dietary horizons, social networks have also provent to contain important information about the disease...
|
|
|
Screening of probiotics bacterial strains aimed at proof of gluten degradation
Korvasová, Lucie ; Obruča, Stanislav (referee) ; Ryšávka, Petr (advisor)
No other treatment for celiac disease and other gluten-related disorders has been found so far except for a lifelong diet, which is significantly restrictive for the patient. Moreover, it is not always possible to adhere strictly to this diet, mainly due to random gluten ingestion, which leads to health complications associated with these diseases. Currently, vaccination is being tested as an alternative treatment, and there is also increasing attention paid to enzymes that could break down the immunogenic part of gluten, specifically in its gliadin component. This thesis examined bacteria that could potentially break down this sequence in gliadin and thereby reduce its concentration during detection. A considerable proportion of the tested bacteria belong to probiotics to ensure their future use for humans is safe. To obtain data, the fact was utilized that as bacteria grow, the turbidity increases proportionally, which was subsequently detected to determine the amount of bacterial growth. The RIDASCREEN® Gliadin competitive kit was used for the gliadin detection test, which works on the principle of a competitive ELISA method with R5 antibodies. The result of the study was the finding that only the bacteria Bacillus subtilis was able to break down gliadin among the examined bacteria. It was also measured how much gliadin the bacteria could break down at different concentrations, and according to the data, it was evaluated that it is appropriate to adapt the culture to the presence of gliadin for a greater amount of broken gliadin.
|
|
|
Potraviny pro zvláštní výživu-potraviny pro osoby s nesnášenlivostí lepku
Klusová, Petra
The aim of this bachelor thesis is to provide an overview of the topic Food for special nutrition, food for people with gluten intolerance. In the thesis, I focus on the labeling of gluten-free food and its nutritional value in comparison with food containing gluten. Among the gluten-free food we count those which contain more than 10 mg of gliadin per 100 g dry weight. The composition and labeling of gluten-free food is regulated by Commission Regulation (EC) 41/2009. Further, I focus on the origin of celiac disease, its development, symptoms and treatment. Celiac disease is caused by toxic effect of gluten particles, alpha gliadin. The body forms antibodies that affect enterocytes that are present in the lining of the small intestine.
|
|
|
Awareness of general nurses about the treatment of celiak disease
HOLEJŠOVSKÁ, Petra
Abstract Objective: The bachelor's thesis deals with the awareness of general nurses about the treatment of celiac disease. The first chapter of the theoretical part is focused on the digestive system, small and large intestine. The following chapter is devoted to the definition of celiac disease, its history and clarification of the concept of gluten. The next chapter presents the symptoms, diagnosis and treatment of celiac disease and the health risks associated with it. The fourth chapter is devoted to gluten-free foods, their labeling, basic rules for buying gluten-free foods and preparing gluten-free food. The fifth chapter is focused on the contributions of health insurance companies to gluten-free food. The following chapter deals with the hospitalization of a celiac in a medical facility and provides some tips for hospitalization. The last chapter of the theoretical part deals with education, the role of the general nurse in the education of patients with celiac disease, forms of education and lists the most common myths associated with celiac disease. In the empirical part, the first goal was to map the awareness and knowledge of general nurses about celiac disease, its symptoms, manifestations and treatment. The second goal was to map the specifics of nursing care for patients with celiac disease. Method of achieving the goal: The set goals were achieved through a research survey, which was carried out using a qualitative approach, the method of questioning. The method of semi-structured interview was chosen for data collection. The examined group consisted of eight general nurses working in inpatient departments at the Tábor Hospital, a.s. Scientific benefits of the work: The research shows that general nurses have awareness and knowledge of celiac disease, its symptoms, manifestations and treatment, although the answers to some questions were only partial, sometimes inaccurate and in minimal cases incorrect. The identified specifics of nursing care for celiacs can be used in hospital facilities to improve the quality of care provided. Furthermore, the work can be used by people who are interested in obtaining information related to celiac disease and a gluten-free diet. Acquired knowledge and conclusions: The research survey revealed the specifics of nursing care for people with celiac disease, which are mainly associated with the gluten-free diet provided. Furthermore, celiac disease has been found to be incorrectly associated with allergies.
|
|
|
Molecular detection of selected gene polymorphisms related to nutrition (nutrichip validation)
TURKOVÁ, Kateřina
Lactose intolerance is the most common food intolerance in the world. Individuals with lactose intolerance are unable to produce the enzyme lactase in the small intestine, which makes it possible to break down the lactose contained in dairy products. Insufficient lactase production may be genetically determined. Two single nucleotide polymorphisms responsible for the persistence of lactase activity in adulthood have been found in the European population. Celiac disease is one of the autoimmune diseases that mainly affects the mucous membrane of the small intestine. The disease is characterized by intolerance to gliadin, which is part of gluten. Intolerance leads to chronic inflammation of the small intestinal mucosa, leading to chronic diarrhea, fatty stools, vomiting and fatigue. The development of celiac disease is conditioned by the presence of a genetic predisposition. Genetic predisposition is linked to HLA system alleles. Specifically, these are the HLA-DQ2 and HLA-DQ8 haplotypes.
|
|
|
Poptávka po bezlepkových potravinách ve vybrané oblasti
MLEZIVOVÁ, Lucie
This diploma thesis analyses the supply of gluten-free foodstuffs in the stores in the Domažlice area, based on the demand of the gluten intolerant customers. In the theoretical part, the basic terms related to the topic are explained, i.e. business terminology, marketing research and overall issue of celiakia and gluten. The practical part examines and evaluates the width and quality of supply of gluten-free products compared to the demand. The main purpose, that is removing the deficiencies which are perceived by the respondents mentioned in the questionnaire, will be completed by proposal of specific recommendation for the Domažlice area according to the wishes of the sick.
|
|
|
HLA typizace v klinické praxi - využití k testování predispozic k onemocněním autoimunitního typu
VESELÁ, Dominika
Autoimmune diseases require the interplay of internal (genetic) and external (environmental) factors to develop and erupt. The essential genetic factors include HLA alleles, whose carrying is associated with a significant predisposition to the development of a specific autoimmune disease. This Master Thesis deals with the problematics of autoimmune diseases associated with HLA system. The practical part focuses on the examination of predisposing alleles related to celiac disease as one of the most widespread autoimmune disease, which many scientific teams are dealing with, but even in the Czech Republic there are not enough population studies of this disease. Thanks to data from genetic laboratory GENLABS s.r.o. in České Budějovice, ÚHKT and VFN in Prague it was possible to focus on such population study.
|
|
| |
|
|
The role of innate immunity cells in the pathogenesis of celiac disease
Dáňová, Klára ; Palová Jelínková, Lenka (advisor) ; Černý, Jan (referee)
Celiac disease is an autoimmune disease which occurs in susceptible individuals after ingestion of food containing gluten. Gluten and its monomeric fraction gliadin induce inflammatory damage of the small intestine by activating the immune cells that react strongly to gluten peptides. Gluten peptides have the ability to activate cells of adaptive as well as innate immune system. This work is focused on the production of interleukin (IL)-1 in antigen presenting cells stimulated with peptic gliadin digest. We found that monocytes and peripheral blood mononuclear cells (PBMC) isolated from blood of celiac patients secrete significantly more IL-1α and IL-1β than cells of healthy donors after stimulation with gliadin digest. The gliadin-induced IL-1β expression is controlled by a signaling cascade that includes MAPK kinase family molecules and transcription factor NF-κB. Moreover, we found that the adaptor proteins MyD88 and TRIF as well as Toll-like receptor (TLR) 2 and 4 play a role in the signaling cascade underlying gliadin-induced IL-1β expression by using murine bone marrow derived dendritic cells (BMDC). The precursor form of IL-1β in gliadin- stimulated PBMC and murine BMDC is maturated by caspase-1. In celiac PBMC the gliadin- induced maturation and secretion of IL-1β depends on the potassium...
|
guest ::
