Clinical trials: Smell Functions
Olfactory Dysfunction, Chronic Rhinosinusitis With Nasal Polyps (CRSwNP)
Neural Dissimilarity in Patients With Chronic Rhinosinusitis With Nasal Polyps Treated With Biologics
This project will focus on rehabilitation of olfactory dysfunction in patients with chronic rhinosinusitis with polyps given biological treatment based on functional magnetic resonance imaging.
- Conditions
- Olfactory Dysfunction, Chronic Rhinosinusitis With Nasal Polyps (CRSwNP), Functional Magnetic Resonance Imaging (fMRI)
- Trial name
- NCT07819162
- Where
- Denmark
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Copenhagen University Hospital, Rigshospitalet
Type 2 Diabetes Mellitus, Cognitive Impairment
Establish Diagnostic Models Based on Olfactory Function and Odor-induced Brain Activation for Diabetes-Related Cognitive Impairment
This is a cross-sectional and longitudinal study to establish diagnostic models based on olfactory function assessments and odor-induced brain activation for cognitive impairment in patients with type 2 diabetes mellitus.
- Trial name
- NCT05543967
- Testing
- Cognitive assessments, Olfactory function measurements, Functional magnetic resonance imaging
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School
HIV, Substance Use Disorder
Olfactory Function and Model-Based Behavior in People Living With HIV and SUD
Background: Human immunodeficiency virus (HIV) infection can affect areas of the brain that control thinking ability. These same areas of the brain also control the sense of smell.
- Trial name
- NCT07637669
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- National Institute on Drug Abuse (NIDA)
Smell Functions, Odor Memory
Effects of Different Anesthesia on Odor Memory
This study aimed to research the effect of different general anesthesia administration on postoperative smell functions and memory.
- Trial name
- NCT05499845
- Testing
- butanol threshold test and smell identification tests
- Where
- Turkey (Türkiye)
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- Zonguldak Bulent Ecevit University
Persian Gulf Syndrome, Occupational Exposure
Investigate Olfactory Functioning as a Possible Proxy for Neurotoxic Exposure in Cohorts of Deployed and Non-Deployed Gulf War-Era Veterans.
Significant subsets of military veterans have reported such health problems as headache, joint pain, fatigue, and memory/concentration difficulties subsequent to their participation in the Gulf War.
- Trial name
- NCT00007514
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Alzheimer Disease (AD), Dementia Alzheimer Type
Effects on the Olfactory Epithelium and the Olfactory Nerve From Exposure to Diesel Exhaust
The goal of this study is to study the effect exposure to air pollution and its effect on development of dementia. Does the diesel exhaust change the function of the olfactory system? Have the exposures measurable effects on the…
- Conditions
- Alzheimer Disease (AD), Dementia Alzheimer Type, Air Pollution Exposure
- Trial name
- DINOSE (NCT07237958)
- Testing
- Diesel Exhaust Particles, Filtered air
- Where
- Sweden
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Umeå University
Diabetes Mellitus, Cognitive Impairment
Relationship Between Diabetes and Cognitive Impairment Based on Olfactory Function Assessment and Functional MRI
The purpose of this study is to explore the relationship between diabetes and cognitive impairment by olfactory function assessment and functional MRI.
- Conditions
- Diabetes Mellitus, Cognitive Impairment, Obesity
- Trial name
- NCT02738671
- Testing
- Cognitive assessment, functional magnetic resonance imaging, olfactory function measurement
- Where
- China
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School
Cognitive Function
Sensory Enrichment for Older Adults
This study evaluates the efficacy of multi-odorant enrichment on cognitive skills, olfactory function, and quality of life.
- Trial name
- NCT03914989
- Testing
- olfactory enrichment (essential oils)
- Where
- United States
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- University of California, Irvine
Glioblastoma Multiforme, Adult, Glioblastoma or Gliosarcoma
Prognostic Potential of Olfactory Function in Glioblastoma: a Prospective Observational Study
The study aims to investigate the prognostic significance of olfactory function in patients with glioblastoma. We are examining olfactory function at various points during therapy and correlating the results with survival data.
- Conditions
- Glioblastoma Multiforme, Adult, Glioblastoma or Gliosarcoma, Glioblastoma, Adult
- Trial name
- OLFGBM (NCT06954636)
- Testing
- olfactory testing (threshold and identification test)
- Where
- 2 sites in Germany
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- Sied Kebir
Lichen Planus
Mucosal and Nasal Involvement and Their Correlation With Smell and Taste Functions in Lichen Planus Patients
This study investigates smell and taste function in patients diagnosed with lichen planus, a chronic inflammatory condition affecting the skin and mucous membranes.
- Trial name
- LP-NOSE (NCT07570706)
- Testing
- Grup 1 - Lichen Planus Patients Intervention Name: Taste and Smell Testing, Oral and Nasal Examination, Nasal Endoscopy Intervention Description: Participants undergo taste and smell testing to assess
- Where
- Turkey (Türkiye)
- Volunteers
- 88 people, healthy volunteers welcome
- Sponsor
- Istanbul Training and Research Hospital
Smoking Cessation, Olfactory Disorder
The ESTxENDS Trial- Substudy on Effects of Using Electronic Nicotine Delivery Systems (ENDS) on Olfactory Function
--> This is a substudy of the main ESTxENDS trial (NCT03589989). Olfactory function outcomes should be considered secondary outcomes of the main smoking cessation outcome formulated in NCT03589989.
- Trial name
- ESTxENDS (NCT04617444)
- Testing
- ENDS (vaporizer/e-cig) and smoking cessation counseling, Smoking cessation counseling
- Where
- 5 sites in Switzerland
- Volunteers
- 389 people, healthy volunteers welcome
- Sponsor
- University of Bern
Chronic Rhinosinusitis (CRS)
Impact of Structural and Microenvironmental Abnormalities in Olfactory Cleft on Olfaction in CRS
The purpose of this research is to investigate the impact of structural abnormalities and microenvironmental changes in the olfactory cleft on olfactory function in patients with chronic rhinosinusitis (CRS).
- Trial name
- NCT06834477
- Testing
- Computed Tomography
- Where
- China
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Healthy Aging, Frailty
Characterisation of Functional and Cognitive Responses Following Olfactory Stimulation and/or Functional Training in Older Adults.
This randomized controlled trial will evaluate the effects of olfactory stimulation and/or multicomponent physical training in adults aged 60 years and older.
- Conditions
- Healthy Aging, Frailty, Cognitive Decline, Olfactory Dysfunction
- Trial name
- INNOLFACT 2 (NCT07623122)
- Testing
- Olfactory stimulation, Multicomponent physical training, Combined olfactory stimulation and multicomponent physical training
- Where
- Spain
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Fundacion Miguel Servet
Acromegaly, Olfactory Disorder
Olfactory Function and Olfactory Bulb Volume in Acromegaly Patients
A prospective, controlled, single blinded study was planned. 20 patients with Acromegaly (Acromegaly Group) and 20 healthy subjects (Control Group) were planned to include in the study.
- Trial name
- NCT04138537
- Testing
- OB volume, CCCRC test
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Obesity, Overweight
The Effects of GLP-1 Receptor Agonists on Chemosensory Function and Ingestive Behavior
The goal of this study is to explore whether of GLP-1 receptor agonist use is associated with differences in taste, smell, food preferences, appetite, food cravings, and responses to food cues in adults.
- Conditions
- Obesity, Overweight, Taste Perception, Olfaction
- Trial name
- NCT07611201
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Purdue University
Amyloidosis, Cardiac Amyloidosis
Study of Olfactory Disorders in Patients With Cardiac Amyloidosis
Amyloidosis is a disease caused by the continuous accumulation of fibrillary proteins in the extracellular matrix causing the architecture of different organs to be disrupted. The prevalence of the disease increases with age.
- Conditions
- Amyloidosis, Cardiac Amyloidosis, Olfactory Loss, Hyposmia
- Trial name
- AMYLODOR (NCT04661800)
- Testing
- Sniffin's stick test
- Where
- France
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Delayed Neurocognitive Recovery
Olfactory Function and Delayed Neurocognitive Recovery
To explore whether odor enrichment can reduce the risk of delayed neurocognitive recovery as an intervention strategy.
- Trial name
- NCT03441074
- Testing
- Odor Enrichment
- Where
- China
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- Shanghai 10th People's Hospital
Multiple Sclerosis
Olfactory and Trigeminal Functions in Patients With Multiple Sclerosis: Case-control Study
The sensation of smell is influenced by the somatosensory and chemesthetic sensati¬ons of the nose: for example, the cooling sensation of menthol or the prickle of carbon dioxide from carbonated drinks.
- Trial name
- NCT06020937
- Testing
- TDI, Trigeminal Test, Cognitive Evaluation by Montreal Cognitive Assessment
- Where
- Italy
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Catania
Cardiovascular Disease, Diabetes
Taste Perception and Chronic Disease Risk
The purpose of the Taste Perception Study is to assess variations in the ability to taste and perceive sensations from various stimuli in younger (18-49 years) and older (50-85 years) volunteers.
- Conditions
- Cardiovascular Disease, Diabetes, Obesity, Metabolic Syndrome
- Trial name
- NCT01023906
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Tufts University
Respiratory Tract Infection, Smell Disorder
Longitudinal Deep Phenotyping of Central Mechanisms in Dysosmia: A Pilot Study Using Electrobulbogram (EBG), Functional MRI (fMRI), and Diffusion-Weighted Imaging (DWI)
Background: Loss of the sense of smell can seriously affect a person's quality of life. The ability to smell can be damaged by many factors, including illnesses, injuries, and exposure to toxic chemicals.
- Conditions
- Respiratory Tract Infection, Smell Disorder, Influenza, Rhinosinusitis
- Trial name
- NCT07149428
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- National Institute on Deafness and Other Communication Disorders (NIDCD)