Evaluation of Protein Loading on Measurement of Renal Reserve
ConditionGlomerular Filtration Rate
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorMediBeacon
About this trial
The goal of this clinical trial is to evaluate the effect of protein loading on the measurement of renal reserve using the MediBeacon Transdermal glomerular filtration rate (tGFR) system. Adults with estimated glomerular filtration rate (eGFR) \>30 ml/min/1.73 m\^2 will be recruited to join the study. This is a potential new use for the tGFR for the assessment of renal reserve. Renal reserve is the increase in GFR that occurs in response to various stimuli, such as when one kidney is removed. The remaining kidney will often show an increase in GFR to compensate. Renal reserve is typically measured after a high protein meal and requires a reproducible stimulus and a repeated measurement of GFR.
The main questions it aims to answer are:
* To characterize the effect of protein loading on GFR (dose response curve) as assessed by the MediBeacon Transdermal GFR System * To determine Renal Reserve in participants with chronic kidney disease (CKD) using the MediBeacon Transdermal GFR System * To demonstrate whether any change in GFR following the protein stimulus is associated with a change in cardiac output using non-invasive bioimpedance (NICaS)
Participants will participate in a Screening visit that will take place within 28 days of the scheduled administration of Lumitrace. On dosing day, participants will have the tGFR reusable sensor with disposable adhesive ring placed on their chest, and the MediBeacon Transdermal GFR System initiated to collect background fluorescence. Following an injection of Lumitrace and the initiation of GFR assessments, participants will ingest a high protein meal over 15-20 minutes. They will be followed at the study center for up to 6-8 hours following administration of Lumitrace. All participants will participate in a follow-up phone call approximately 7 days after the last exposure to Lumitrace. Researchers will analyze the results to see if there is a detectable difference in fluorescence clearance rate following the high protein meal.
Eligibility criteria
Qualifiers
Age > 18 years - male or female
Eligible female non-pregnant participants who are either not of child-bearing potential or willing to use adequate contraception during the trial
Males must be willing to practice abstinence or utilize adequate contraception from dosing day to at least 7 days post-dose
For women of child-bearing potential, the participant should have a negative pregnancy test, and agrees to one of the following acceptable contraceptive methods used consistently and correctly i.e. abstinence, oral contraceptive either combined or progesterone alone; injectable progesterone, implants of levonorgestrel, estrogenic vaginal ring, percutaneous contraceptive patches, IUD device or system or male partner sterilization
Disqualifiers
Current use of renin-angiotensin-aldosterone system inhibitors (RAASi) including angiotensin-receptor blockers (ARBs), angiotensin-converting enzyme inhibitors (ACE-inhibitors) or direct renin inhibitors that can't be stopped at least 5 half-lives prior to the study day.
Current use of sodium-glucose cotransporter-2 (SGLT2) inhibitors such as bexaglifloxin, canagliflozin, dapagliflozin, empagliflozin, ertugliflozin or others that can't be stopped at least 5 half-lives prior to the study day.
Currently taking any drug classified as a sympathomimetic drug such as dobutamine, dopamine, norepinephrine, epinephrine, isoproterenol or others.
Current over the counter use of cold medications containing ephedrine or weight loss drugs containing ephedra alkaloids
Trial design
Treatments tested in this trial
- Lumitrace
- MediBeacon Transdermal Glomerular Filtration Rate Measurement System (TGFR)
Treatment groups
25 Participants
are divided into 1 treatment groupSponsors and collaborators
Source ClinicalTrials.gov