Analysis of the Effect of Antimicrobial Soap on Bacterial Survival

Completed · Not applicable

Conditions studied: Survival of Bacteria on Skin After Using Different Soaps

In brief

This study will recruit up to 10 healthy volunteers. An avirulent strain of S. pyogenes will be applied to their forearms after washing each of their forearms with different types of soap, one with an antimicrobial compound, and the other without an antimicrobial compound. After several hours of incubation, the subject's forearms will be swabbed for bacteria. The forearms will then be cleansed with antibacterial soap and water followed by 70% ethanol. The bacterial swabs will be analyzed and compared between the different soaps that were used to cleanse each digit prior to the application of S. pyogenes. The investigator expects the number of bacteria surviving on the skin of forearms washed with antimicrobial soaps will be fewer than with control soap.

Key facts

Study ID

NCT02012348

Run by

University of California, San Diego

People needed

30

Starts

2013-12-01

Expected to finish

2015-07-01

Last updated by the study team

2019-10-03

Who can join

Age: 18 and older, up to 60. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Those who meet all of the following criteria are eligible for enrollment into the study:
• Age 18-60 years
• Male or female of any race and ethnicity
• Subject agrees to comply with study requirements.

You may not qualify if…

• Subjects with severe medical condition(s) that in the view of the investigator prohibits participation in the study
• Dermatologic disease such as psoriasis or atopic dermatitis which may have inherently abnormal antimicrobial peptide levels
• Subject has Netherton's syndrome or other genodermatoses that result in a defective epidermal barrier
• Pregnant or nursing females
• Immunocompromised subjects (e.g., lymphoma, HIV/AIDS, Wiskott-Aldrich Syndrome), or with a history of active or malignant disease (excluding non-melanoma skin cancer) as determined by the participant's medical history.
• Subjects with a history of psychiatric disease or history of alcohol or drug abuse that would interfere with the ability to comply with the study protocol
• Subjects with significant concurrent medical condition(s) at screening that in the view of the investigator prohibits participation in the study (e.g., severe concurrent allergic disease, condition associated with malignancy, and condition associated with immunosuppression)
• Active viral or fungal skin infections at the target areas
• Are currently receiving lithium, antimalarials, or intramuscular gold now or within the last 4 weeks.
• Ongoing participation in an investigational drug trial
• Use of any oral or topical antibiotic during the study and up to one week prior to entering the study
• Use of any local topical medications less than one week prior to screening
• Use of any systemic immunosuppressive therapy less than four weeks prior to screening.
• Subjects with a history of or propensity to developing reactions after use of over the counter cleansers
• Subjects with diabetes
• Injured, broken skin that, per the investigator, may cause injury if exposed to low virulence GAS.

Where it is running

• UCSD Dermatology — San Diego, California, United States

Full record on ClinicalTrials.gov

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