Bleach Bath Treatment of Adults With Atopic Dermatitis

Atopic Dermatitis Clinical Trial

Official title:

Assessing the Impact of Bleach Baths on Itch, Cutaneous Inflammation, Microbial Flora and Skin Barrier Function in Adult Atopic Dermatitis Subjects

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01996150
• Other study ID #: BB/URMC- 2013
• Secondary ID: R21AR062357
• Status: Completed
• Phase: N/A
• First received: November 12, 2013
• Last updated: January 12, 2018
• Start date: January 2014
• Est. completion date: June 1, 2017

Study information

• Verified date: January 2018
• Source: University of Rochester
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is pilot, mechanistic study to address whether bleach baths given to adult subjects with atopic dermatitis or eczema, who are colonized with the bacteria Staphylococcus aureus, will significantly alter their skin microbiome and in so doing improve their skin barrier, diminish expression of inflammatory proteins in the skin and improve itch. To answer these questions the investigators will perform a 3-month, pilot, investigator-initiated, single-center, open-label clinical study. This study will allow us to test the following hypothesis: 1) that bleach baths will normalize skin barrier function, 2) that bleach baths will diminish the local inflammatory response in the skin, and 3) that bleach baths will improve validated measures of itch (also called pruritus).

Description:

Atopic Dermatitis subjects have different proportions of bacterial communities on their skin surface. Often, their skin is colonized with the pathogenic bacteria called Staphylococcus aureus. Studies have demonstrated a remarkable clinical improvement in Atopic Dermatitis subjects who take bleach baths two times per week for three months. The assumption was that this worked by reducing the S. aureus on the skin surface but by standard culture techniques there was no change in S. aureus colonization. Therefore, the mechanism by which these bleach baths improved the disease remains entirely unknown. This study will assess the effects bleach baths have on bacteria that can and cannot be cultured using new molecular biologic tools that have shown us that the skin is home to thousands of different microbial species. This bacterial ecosystem is called the microbiome. The investigators will also determine whether bleach baths affect skin barrier integrity and the cutaneous expression of lymphocyte-derived cytokines that are thought to cause the skin inflammation in subjects with Atopic Dermatitis. The investigators will also assess to what degree these baths improve disease severity and the symptoms of itch using validated scoring systems. This work will likely uncover new ideas about the pathogenesis of Atopic Dermatitis and may be the first step to developing new pro-microbial and antimicrobial therapeutics.

This study is designed to test the following hypotheses:

1. The chronic use of bleach baths will normalize skin barrier function in adult Atopic Dermatitis subjects as measured by physiological measures of barrier in vivo, and as assessed by ex vivo studies (measuring transepithelial electrical resistance (TEER) and permeability of the epidermis from skin biopsies). The investigators will evaluate whether any of the functional changes correlate with changes in expression of relevant tight and intercellular junction molecules at the messenger ribonucleic acid (mRNA) level.

2. Bleach baths will improve validated measures of pruritus (itch).

3. Bleach baths will diminish the local T-helper 2 (Th2) immune response measured from skin biopsy samples.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 58
• Est. completion date: June 1, 2017
• Est. primary completion date: June 1, 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:

• Moderate to severe Atopic dermatitis: Eczema Area and Severity Index (EASI) score = 10.

• Skin culture positive for Staphylococcus aureus

• Must have active skin disease on the day of enrollment.

Exclusion Criteria:

• Unwillingness or inability to complete informed consent

• Lidocaine or Novocain allergy

• History of keloid formation

• Course of systemic antibiotics or antivirals within 2 weeks prior to enrollment.

Related Conditions & MeSH terms

• Atopic Dermatitis
• Dermatitis
• Dermatitis, Atopic
• Eczema

Intervention

Drug:
• bleach bath (sodium hypochlorite)
Subjects will take diluted bleach bath (0.005% Sodium Hypochlorite) for 5-10 minutes twice a week for 12 weeks.

Locations

Country	Name	City	State
United States	University of Rochester Medical Center	Rochester	New York

Sponsors (3)

Lead Sponsor	Collaborator
University of Rochester	National Eczema Association, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)

Country where clinical trial is conducted

United States, 

References & Publications (3)

De Benedetto A, Rafaels NM, McGirt LY, Ivanov AI, Georas SN, Cheadle C, Berger AE, Zhang K, Vidyasagar S, Yoshida T, Boguniewicz M, Hata T, Schneider LC, Hanifin JM, Gallo RL, Novak N, Weidinger S, Beaty TH, Leung DY, Barnes KC, Beck LA. Tight junction defects in patients with atopic dermatitis. J Allergy Clin Immunol. 2011 Mar;127(3):773-86.e1-7. doi: 10.1016/j.jaci.2010.10.018. Epub 2010 Dec 15. — View Citation

Huang JT, Abrams M, Tlougan B, Rademaker A, Paller AS. Treatment of Staphylococcus aureus colonization in atopic dermatitis decreases disease severity. Pediatrics. 2009 May;123(5):e808-14. doi: 10.1542/peds.2008-2217. — View Citation

Kong HH, Oh J, Deming C, Conlan S, Grice EA, Beatson MA, Nomicos E, Polley EC, Komarow HD; NISC Comparative Sequence Program, Murray PR, Turner ML, Segre JA. Temporal shifts in the skin microbiome associated with disease flares and treatment in children with atopic dermatitis. Genome Res. 2012 May;22(5):850-9. doi: 10.1101/gr.131029.111. Epub 2012 Feb 6. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Noninvasive barrier measurement called Transepidermal Water Loss (TEWL) done before and after repeated tape stripping	TEWL will be measured at 3 timepoints throughout the study.	change from baseline after 12 weeks of bleach baths
Secondary	Itch - 5D pruritus scale	Change in self reported itch using a validated assessment tool.	change from baseline after 12 weeks of bleach baths
Secondary	Skin permeability	amount of fluorescent labeled molecule passage through the epithelial layer ex-vivo	change from baseline after 12 weeks of bleach baths
Secondary	Transepithelial electrical resistance	change of epithelium membrane potential and resistance in millivolts ex-vivo	change from baseline after 12 weeks of bleach baths
Secondary	Tissue expression of relevant inflammatory and epidermal barrier markers	Messenger ribonucleic acid (mRNA) expression of key inflammatory mediators and epidermal barrier proteins performed on the biopsy specimens	change from baseline after 12 weeks of bleach baths
Secondary	Skin bacterial diversity	Change in diversity of bacteria present in the skin	change from baseline after 12 weeks of bleach baths