Active clinical trials for "Rhinitis"

The purpose of this study is to see if a nasal steroid drug delivered to the nose with the NasoNeb™ inhaler improves the symptoms of people with perennial allergic rhinitis (year round allergy symptoms).

The primary objective will be to compare the impact of the study formulations on alergic rhinitis carriers.

The purpose of this study is to determine the onset of action of two commercially available over-the-counter antihistamines (Loratadine and Fexofenadine) in a model of seasonal allergic rhinitis (SAR). Participants undergo sensitization exposures to Mountain Cedar (juniperus ashei) pollen in a Biogenics Research Chamber; those who demonstrate an adequate allergic response determined by the Major Symptom Complex (MSC) score will then receive drug.

After a nasal allergen challenge it should be possible to measure markers of inflammation that may be useful to assess the properties of future drugs. If these markers are reproducible and impacted by the study drugs they could be useful for future drug development.

To compare patient perceptions of the sensory attributes, including taste and aftertaste, of Olopatadine relative to azelastine when administered as a single dose in patients with allergic rhinitis.

The objectives of this study are to evaluate and compare patient preference for FF (Fluticasone Furoate) and FP (Fluticasone Propionate Aqueous)nasal sprays in the treatment of allergic rhinitis following single-dose administration.

The purpose of the study is to find out if montelukast can be used to treat the various symptoms of allergic syndrome.

Allergic rhinitis is an inflammatory disorder of the upper airway that occurs following allergen exposure. The focus of this study, seasonal allergic rhinitis (SAR), is one type of allergic rhinitis that is triggered by the pollen from trees, grasses, and weeds. Commonly referred to as "hay fever", it is characterized by sneezing, nasal congestion and pruritus, rhinorrhea, and pruritic, watery, red eyes. The purpose of this study is to evaluate the onset of action of an investigational nasal spray, GW685698X aqueous nasal spray, versus vehicle placebo nasal spray in the treatment of seasonal allergic rhinitis caused by ragweed following a single dose of treatment in controlled pollen concentrations in an allergen challenge chamber.

Nasal mucus and nasal epithelium are the first defense barriers against allergens. Various proteins are found in nasal mucus that play a role in allergic rhinitis and reflect immune response to allergen exposure. The difference in the proteomic profile of allergic rhinitis patients and healthy controls can give insight about how the response works and which proteins could lead to either enhanced immune reaction or to defense response like augmentation of epithelial integrity. It is also known that the airway epithelium plays a crucial role in the regulation of airway immune responses and inflammation. Gene expression profiling is widely used to analyses complex disease. For the airway epithelium gene expression profile in diseased and healthy state as well as in baseline and provoked state can clarify the mechanism of defense reactions and the course of inflammatory processes. Nasal mucus proteins as consequence of different gene expression can be seen as part of the end products of this complex mechanisms and interactions between allergens and the epithelium. Nasal mucus proteins have different origins and production sites and gene expression does not necessarily result in functional metabolites. The aim of this proposed project is to try and analyze in a holistic proteomic approach the response to allergen on a genetic/genomic level from the nasal epithelium to protein/proteomic level in nasal mucus. This analysis gives us insight of how the different gene expression profiles result in a protein expression and further clarifies which proteins are directly originate from the epithelium and which are result of plasma exudation or underlie different regulatory processes. From allergic rhinitis patients and healthy controls nasal mucus, nasal mucosa, and serum will be obtained. Nasal mucus will be collected with a special suction device equipped with a mucus trap from the middle meatus under endoscopic control without touching the mucosa. Nasal mucosa will be obtained through nasal brushes under local anesthesia and put into primary culture. Serum prepared from blood samples. Patients with grass or tree pollen allergy will be included and allergic state will be determined by skin prick tests and RAST (Radio-Allergo-Sorbent-test). The aimed for sample size will be 15 patients per group. Samples will be obtained in and out of pollen season. Allergic patients will fill out a symptom score and samples will be taken when symptoms are strong (in pollen season) and disappeared (out of pollen season). For healthy controls the time point of sample taking will be correlated to the allergic rhinitis patients to have a similar pollen exposure. Nasal mucus will be sent for Liquid Chromatography Tandem mass spectrometry for proteomic analysis and from nasal epithelial cells RNA will be isolated and send for Microarray analysis. By an integrative omics approach gene and protein expression will be correlated and cross talk between nasal mucus and epithelium will be analysed. The identification of key genes or gene clusters leads to further identification of key proteins or protein groups as biomarkers that could serve for novel therapeutic or diagnostic strategies in allergic rhinitis. The integrative omic approach downsizes the potential candidates since the focus lies on epithelial gene expression and their protein products and excludes proteins that are highly abundant without direct correlation to allergen exposure e.g. through plasma exudation. Moreover, the genomic and proteomic analysis could explain in more detail how the barrier of mucus and epithelium are affected by allergen exposure. The comparison to healthy controls and the longitudinal changes throughout the season further sheds light on how these individuals react upon allergen exposure and how this could lead to prevention of sensitization.

The purpose of the study is to evaluate changes in nasal airflow caused by loratadine 5 mg/pseudoephedrine sulfate 120 mg (Claritin D) tablet and fluticasone propionate 50 mcg per spray nasal spray (Flonase) in subjects suffering from nasal congestion and other allergy symptoms.