Clinical Trials Logo

Clinical Trial Summary

The microbiome can affect skin health from the gut-skin axis, from environmental exposure, and topical treatments. Decreasing biodiversity of skin microbiota has been linked to inflammatory conditions, allergies, and skin health. This cross sectional study will be used to survey healthy volunteers and measure the density and diversity of skin flora of varying skin types. The aim of this study is to identify associations between the skin flora and characteristics of healthy skin types.


Clinical Trial Description

The microbiome can affect skin health from the gut-skin axis, from environmental exposure, and topical treatments. Decreasing biodiversity of skin microbiota has been linked to inflammatory conditions, allergies and skin health. Therefore, this cross sectional study will be used to survey healthy volunteers and measure the density and diversity of skin flora of varying skin types. This study will aim to determine if there are associations between the diversity and/or density of normal bacterial flora and (1) the different skin types (i.e. normal, dry, oily, combination, sensitive); (2) the different Fitzpatrick skin types (i.e. ivory; fair or pale; fair to beige with golden undertones; olive or light brown; dark brown; deeply pigmented dark brown to darkest brown): (3) the number of skin products used daily representing time spent on skin health (i.e. low:0-1, mid:2-4, high:5+). Participants will complete a survey in which they will identify their skin conditions and the number and type of skin products they use on their face as a part of their daily routine. In addition, this study will evaluate the potential of an autofluorescence image-guided device to capture differences in healthy human skin flora through autofluorescence. The MolecuLight i:X™ is used to detect bacteria in chronic wounds. Based on extensive preclinical and clinical studies, the i:X has demonstrated its capability at collecting autofluorescent images of wounds and detecting the presence and relative changes in connective tissue (e.g. collagen) content and bio-distribution involved in wound healing. It can also detect the presence and relative amounts of commensal and pathogenic bacteria within the wound based on autofluorescence alone (these bacteria are invisible to standard visualization with the naked eye using white light), thus providing a measure of infection status. The imaging device will be used to image skin from the cheek and forehead of healthy volunteers to compare the fluorescent characteristics of normal skin flora. The fluorescent images captured with the i:X™ will be compared against 16S RNA analysis of the skin microbiome and traditional microbiology techniques with selective and differential tests. In addition, non-selective agars will be used to grow bacteria according to the spatial topography of the skin, using a tape stripping method, with lightly adhesive 3M™Tegaderm wound dressings. This will serve as a "map" for fluorescent images by which to compare fluorescent features to bacterial species. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04180748
Study type Observational
Source University Health Network, Toronto
Contact
Status Completed
Phase
Start date November 25, 2019
Completion date March 20, 2021

See also
  Status Clinical Trial Phase
Recruiting NCT05414994 - Assessment of the Ocular Microbiome in Health and Disease
Completed NCT04769882 - Er:YAG Laser Effects on Microbial Population in Conservative Dentistry N/A
Completed NCT04766528 - Effect of Diet on the Microbiota / Endoccanabinoidome Axis in Response to Physical Activity N/A
Completed NCT03720314 - Microbiota Profiling in IBS
Completed NCT04122612 - Shaping Microbiome in the First 1,000 Days of Life
Not yet recruiting NCT05405634 - Microbiota in Chronic Anal Fissure and Its Association With Prognosis
Not yet recruiting NCT04895774 - Ex Vivo Study of the Mechanism of Action of Active Ingredients on the Intestinal Microbiota
Recruiting NCT05992688 - The Sweet Kids Study (Stevia on Weight and Energy Effect Over Time) N/A
Recruiting NCT05502380 - Broad-spectrum Antibiotic Prophylaxis in Tumor and Infected Orthopedic Surgery Phase 3
Completed NCT05175833 - Oral Probiotics and Secondary Bacterial Pneumonia in Severe COVID-19 Phase 2
Recruiting NCT04836910 - Microbiome and Polycystic Ovaries
Recruiting NCT05603650 - Effects of Mouthrinses on the Microbiome of the Oral Cavity and GI Tract N/A
Completed NCT05575050 - Impact of Teeth Brushing in Ventilated COVID-19 Patients. N/A
Completed NCT04991818 - MSC - OneBiome UX Pilot Study N/A
Completed NCT04374955 - The Effect of Probiotic Added to Maternal Diet on Infantile Colic and Intestinal Microbiota Content N/A
Recruiting NCT04140747 - Transfer of Strictly Anaerobe Microbes From Mother to Child
Recruiting NCT04111471 - The Use of A Prebiotic to Promote a Healthy Gut Microbiome in Pediatric Stem Cell Transplant Recipients N/A
Suspended NCT03220282 - The Milk, Growth and Microbiota Study N/A
Completed NCT03422562 - Probiotics and Intestinal Microbiome in Preterm Infants Phase 3
Recruiting NCT05695196 - Feasibility and Safety Study of Parent-to-Child Nasal Microbiota Transplant Phase 1