Pilot Study of Taste Sensations in Patients With End-stage Renal Disease on Hemodialysis
|ClinicalTrials.gov Identifier: NCT03495271|
Recruitment Status : Completed
First Posted : April 11, 2018
Last Update Posted : April 18, 2018
|Condition or disease|
|End Stage Renal Disease|
Individuals on dialysis due to kidney failure have very prescriptive diets. These diets help increase dialysis effectiveness and help patients control blood levels of electrolytes including potassium and phosphate, acid-base balance, blood pressure, and fluid between dialysis treatments. However, patient compliance with these diets is often very low, and one reason for this low compliance is disguesia (abnormal taste sensations) which can make the diets unpalatable. The investigators hypothesize this disguesia, and subsequent lack of adherence to a dialysis friendly diet, is a result of either vascular taste (tasting one's own blood through the basolateral side of taste cells) or altered chemical composition of saliva in between dialysis appointments. However, to study these hypotheses, data are needed on the types of substances that may contribute to the disguesia. Substances for which the concentration is influenced by kidney function (in healthy people) or dialysis (in patients) are the prime candidates for the disguesia under our hypotheses.
The investigators will study how dialysis patients perceive sodium, calcium, potassium, creatinine, urea, phosphate, glutamate (umami taste), and iron solutions, and whether alterations in saliva may contribute to altered sensations from these compounds. These solutions will be used to:
- Determine whether dialysis patients recognize the flavour of specific stimuli as similar to the disguesias experienced between dialysis treatments.
- Determine if the intensity of the flavour from these solutions is more or less intense at the beginning of dialysis compared to the end.
- Determine if patients' ratings for the solutions differ from healthy, control individuals.
- Determine if saliva of patients contains different concentrations of analytes such as sodium, potassium, creatinine, urea, phosphates, iron, or glutamates from healthy controls.
- Determine if concentrations of these analytes in saliva decrease over the course of dialysis treatment.
|Study Type :||Observational|
|Actual Enrollment :||55 participants|
|Official Title:||Pilot Study of Taste Sensations in Patients With End-stage Renal Disease on Hemodialysis|
|Actual Study Start Date :||February 6, 2017|
|Actual Primary Completion Date :||April 19, 2017|
|Actual Study Completion Date :||April 19, 2017|
Those with dysphagia were excluded.
In both participant groups, before each tasting protocol commences, sterile cotton dental rolls will be placed in the participant's mouth. This will be used to collect a saliva sample and determine salivary flow.
Tasting Protocol: The hemodialysis patients will taste each solutions twice, both before and after their dialysis session. An sensory questionnaire and an open ended comment box will be given for participants to type in other words to describe the sensations.
In dialysis patients only, blood will be drawn pre and post dialysis for serum ion concentrations.
The above protocol will be mimicked in the healthy control group. The only difference is that instead of a pre/post dialysis tastings, the control population will have a 2-4 hour gap in between tastings in order to follow the approximate time-frame of the dialysis patients. Finally they will not be required to provide blood samples.
- Taste perception [ Time Frame: 1 day ]Assess effect of dialysis on taste perceptions of solutions via sensory questionnaire. The scale used will be a generalized visual analog scale, which will ask participants about the intensity and hedonic quality of the sensations experienced. The scale ranges from 0 to 100 and are rated by the individuals when tasting the samples.
Biospecimen Retention: Samples Without DNA
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03495271
|United States, Indiana|
|West Lafayette, Indiana, United States, 47907|