Active clinical trials for "Rhinitis, Allergic"

This study is designed to investigate whether exposure to particulate air pollution increases the allergic response to allergens. Research studies suggest that symptoms in individuals with allergies may be aggravated by exposure to particulate air pollution. We sought to experimental determine this by exposing human volunteers to combustion particles, a component of air pollution, and then challenge them with an allergen such as ragweed or oak tree pollen. Using biological tests we can measure whether the allergen response is magnified by prior particulate exposure.

The primary objective of the pilot study is to compare inflammatory responses in blood sera from patients receiving first allergen immunotherapy (AIT) with aluminium (Alum), microcrystalline tyrosine (MCT), or a combination of MCT and monophosphoryl lipid A (MPLA) as adjuvants. The AIT products are containing allergen extracts of grass and tree pollen). Blood is collected before as wells as one day, seven days, and 6-7 weeks after first AIT, and the blood is analysed for content of inflammatory proteins and antibodies.

Longitudinal, observational study to assess the short-term (test re-test) and mid-term (within the span of 28 days) repeatability of active anterior rhinomanometry (AAR) measures on 4 parallel groups of children with different rhinitis phenotypes, and 1 group of control (healthy) children. Secondary objectives are: i) assessing of association between AAR, exhaled FeNO (eFeNO) and nasal FeNO (nFeNO); ii) assessing association between objective measurements (AAR, eFeNO and nFeNO) and subjective measurements (Total 5 Symptom score, T5SS). The study is intended to obtain useful information for improving rhinitis management.

The purpose of this study is to find out if the bacteria present in the nose or sinuses of people with seasonal allergies changes during their allergy season. Another purpose of this study is to see if the bacteria present in the nose and sinuses of non-allergic people are the same as allergic people before the allergy season and if it changes during the season. Many bacteria are difficult to grow in the laboratory so the investigators are using analysis of DNA (the genetic material in cells) of the bacteria in the nose and sinus to find them. The investigators will be testing DNA of the bacteria only and not of the human subjects taking part in this study. This research is being done to help us understand how allergy affects bacteria in the nose and sinuses.

Allergic rhinitis (AR) is defined as inflammation of the nasal mucosa after exposition to an allergen in sensitized patients. AR causes not only nasal symptoms such as sneezing, itchy nose, rhinorrhea and nasal obstruction, but also has a significant impact on quality of life. Symptom control and overall satisfaction in patients undergoing subcutaneous immunotherapy (SCIT) or sublingual immunotherapy (SLIT) on the long term has not yet been investigated so far.

The purpose of this study is to see whether rEV131 when given as a nasal spray in a single dose to each nostril is safe and can reduce the signs and symptoms of allergic rhinitis (hay fever) caused by an allergen challenge. All patients enrolled will be known to be allergic to ragweed pollen and will be given ragweed pollen extract in both nostrils 30 minutes after either rEV131 or innactive vehicle (placebo). The signs and symptoms (sneezing, itching, stuffiness and runny nose) will each be given a score from 0 to 3 by the patient and these will be added together and the combined scores from patients treated with rEV131 will be compared with those who received placebo.

Pilot study on the association between allergic rhinitis and cognitive ability in 174 children aged 11-14 within the same year group at school in which 140 Allergic Rhinitis subjects and 34 non-Allergic Rhinitis subjects. Primary outcome measures include cognitive tests (Trait Making Test, Digit Span Test, Stroop Test, Chinese Auditory Verbal Learning Test, Verbal Fluency Test), so as to assess the cognitive ability of allergic rhinitis patients before and after treatment compared to a control group. Rhinitis Symptom Utility Index (RSUI) of patients will be the secondary outcome measured through questionnaires. Positive skin prick test and endoscopy examination (taking place in Prince of Wales hospital) will be required before the diagnosis of allergic rhinitis. The data will be analysed by the Multilevel models.

What happens in the nose during an allergic reaction? Are there changes that a new drug could treat? What is the best way to test new drugs?The response of the nose to being exposed to cat allergen in someone who is allergic to cats. Symptoms, level of nasal blockage and cell and chemical changes that occur in the nose will be studied before and after being exposed to cat allergen. The investigators will also to see if giving repeated doses of allergen increases the response.Allergic rhinitis is a very common illness. There are over 500 million patients worldwide. It can increase the severity of associated asthma. Currently available drugs do not completely treat the symptoms. New treatments need to be found. A way of testing these drugs is very important. This study will investigate causes of the symptoms that occur in allergic rhinitis. It will also validate a proposed model to test new drugs. the Study Hypothesis is that a model of nasal allergen challenge shows an increased response (priming) with repeat challenges as determined by changes in nasal peak inspiratory flow.

Allergic rhinitis is a complex chronic inflammatory disease, it always presents with nasal obstruction, nasal itching, sneezing and runny nose. Whether in adults or children, rhinitis is a complex disease. The prevalence of allergic rhinitis in Taiwan is about 24-29%. Taiwan is a developing country. It is a hot and humid country. In developing countries, industrialization, air pollution makes the constantly increasing number of patients with rhinitis. Penghu in 1994 for children aged 7 to 14 by the study found that among 7599 people, 1766 people have allergic rhinitis, about 23.2%. Allergic rhinitis is a complex chronic disease. So, it become a diagnostic challenge, its prevalence always underestimated. The prevalence of rhinitis has increased in recent years. The phenomenon of underestimate is caused by variety of personal and environmental factors. Allergic rhinitis had increased direct and indirect social and economic burden. Geographic tongue is a benign tongue performance. Geographic tongue has been reported their relevance to allergy. Geographic tongue is a chronic tongue situation. The causes of geographic tongue still remains unknown. Allergic rhinitis is a diagnostic challenge to clinicians. The investigators hope that geographic tongue could play a role in the diagnostic of allergic rhinitis. The prevalence of geographic tongue in the United States is about 1.8%, white Americans and Mexicans have a higher incidence rate. This study will investigate the relevance between allergic rhinitis and geographic tongue. The investigators will analyze the relevant gender, age, severity of inspection reports. The research results wound provide an important reference to the diagnosis of allergic rhinitis.

The prevalence of allergic diseases, especially airway allergic diseases, has increased dramatically over the last twenty years all over the world including Lithuania. Allergic diseases are associated with significantly reduced quality of life and can sometimes cause death. Allergic diseases have turned into an important economic and social burden and nowadays take a more and more important place in the health system. Despite all intensive investigations, the pathogenesis of allergic airway diseases still remains unclear. As allergic diseases have a systemic pattern and multicomponent pathogenesis, it is important to investigate not individual cells, but examine various inflammatory cells instead, including their biological products and possible cellular interactions along the course of allergic diseases. This research focuses on the cells that are claimed to be important in the pathogenesis of allergic airway diseases, i.e. a newly found effector T helper cell subset (Th9 cells), which still lacks deeper investigation, and the main inflammatory cell, eosinophil. This study aims at determining the importance the way the Th9 lymphocytes perform, the eosinophil's activity, as well as molecular factors affecting these cells has in the process of prognostication of allergic airway diseases, namely allergic rhinitis and allergic asthma. An allergen challenge test will be performed in order to define the meaning of pathogenetic changes. The results of this research may reveal useful information in the course of allergic diseases and may be valuable when creating strategic principles of prophylaxis. The findings could be used for prevention and early diagnostics of allergic diseases and it could also open doors to discovering new and effective treatment.