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4 clinical studies listed.
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Tundra lists 4 Healthy Adult Volunteer clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT07364851
A Phase 1 Clinical Trial to Evaluate the Safety and Pharmacokinetics of DW4421-T1 and DW4421S-T1 in Healthy Adult Volunteers
Safety and pharmacokinetic characteristics evaluation of DW4421-T1 and DW4421S-T1
Gender: All
Ages: 19 Years - 50 Years
Updated: 2026-01-23
NCT07364877
A Phase 1 Clinical Trial to Evaluate the Safety and Pharmacokinetics of DW4421 and DW4421S in Healthy Adult Volunteers
Safety and pharmacokinetic characteristics evaluation of DW4421 and DW4421S
Gender: All
Ages: 19 Years - 50 Years
Updated: 2026-01-23
NCT05966532
Emotional Cognition: Establishing Constructs and Neural-Behavioral Mechanisms in Older Adults With Depression
This is a cross-sectional pilot study designed to establish hot and cold cognitive functions and underlying neurocircuitry in older adults with MDD. The investigators will study 120 participants aged 21-80 years old with MDD. All participants will undergo clinical and neurocognitive assessment, and Magnetoencephalography (MEG)/Magnetic resonance imaging (MRI) procedures at one time point. The investigators will also enroll 120 demographically matched comparable, never-depressed healthy participants (controls) to establish cognitive benchmarks. Healthy controls will complete clinical and neurocognitive measures at one time point. To attain a balanced sample of adults across the lifespan, the investigators will enroll participants such that each age epoch (e.g., 21-30, 31-40, etc.) has a total of ten subjects (n=10) in both the healthy control cohort and depressed cohort.
Gender: All
Ages: 21 Years - 80 Years
Updated: 2025-12-15
1 state
NCT07182500
The Effect of Bifidobacterium Probiotics on Gut Microbiota Changes in Healthy Adults During Short-term Travel Along the Silk Road
Journeying along the historic Silk Road exposes travelers to dramatic dietary shifts, unfamiliar microbial environments, and the physical stresses of long-distance travel-all known to disrupt gut health and cause gastrointestinal complaints, including traveler's diarrhea and sleep disturbances. Such disruptions may also elevate the risk of acquiring antibiotic-resistant organisms. This randomized, double-blind, placebo-controlled trial evaluated whether probiotic supplementation can help maintain gut microbial balance and support traveler well-being during trips to Silk Road regions. In addition to monitoring changes in gut microbiota composition, the study assessed gastrointestinal symptoms, sleep quality, anxiety levels, overall well-being, gut immune markers, functional profiles of the microbiome, and the presence of antibiotic resistance genes.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2025-12-10
2 states