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Secondary Bacterial Infections and Nasal Colonization in Scabies and Atopic Dermatitis

2026년 9월 10일 업데이트: Tunç Ozen, Istanbul Medeniyet University

Microbiological Profile of Secondary Bacterial Infections and Nasal Colonization in Patients With Scabies and Atopic Dermatitis: A Prospective Observational Study

This prospective observational study will evaluate the microbiological profile of secondary bacterial infection and nasal colonization in participants with scabies or atopic dermatitis. Bacteria isolated from impetiginized skin lesions and nasal swabs will be compared, and antimicrobial susceptibility patterns will be assessed. Healthy participants without an inflammatory skin disease or signs of infection will provide nasal swabs as a control group. Patients will be followed on days 7 and 14 to assess clinical response and related clinical measures.

연구 개요

상태

아직 모집하지 않음

정황

상세 설명

Participants with dermatologist-confirmed scabies or atopic dermatitis and active impetiginized skin lesions will undergo clinical assessment and microbiological sampling. A superficial swab will be obtained from the infected skin lesion and a nasal swab will be obtained from the nasal vestibules. Healthy controls will undergo nasal sampling only. Cultures will be evaluated for Staphylococcus aureus, Streptococcus pyogenes, and other bacterial isolates. Antimicrobial susceptibility testing will be performed according to European Committee on Antimicrobial Susceptibility Testing (EUCAST) guidance. Skin and nasal isolates will be compared at the species level and by antimicrobial resistance profile. Clinical data include age, sex, disease duration, comorbidities, recent treatments, itch severity using a 0-10 visual analog scale, and lesion morphology, location, number, and excoriation. Patients will be contacted on days 7 and 14 to assess clinical response, new lesion development, change in itch severity, treatment adherence, and local or systemic adverse events.

연구 유형

관찰

등록 (추정된)

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

이름: TEST CONTACT - REPLACE
전화번호: +90 000 000 0000
이메일: test-contact@example.com

연구 장소

터키 (Türkiye)
- - Istanbul, 터키 (Türkiye)
    - Test Study Site - Replace

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

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어린이
성인
고령자

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예

샘플링 방법

비확률 샘플

연구 인구

Participants presenting to a dermatology clinic will include patients with dermatologist-confirmed scabies or atopic dermatitis and active impetiginized skin lesions, as well as healthy controls without inflammatory skin disease or signs of infection.

설명

Inclusion Criteria:

Scabies group: dermatologist-confirmed scabies and an active impetiginized skin lesion.
Atopic dermatitis group: dermatologist-confirmed atopic dermatitis and an active impetiginized skin lesion.
Healthy control group: no inflammatory skin disease or clinical signs of infection.
Written informed consent (and appropriate parent/guardian permission when applicable).

Exclusion Criteria:

Systemic or topical antibiotic use within the previous 14 days.
Active nasal infection or nasal symptoms.
History of nasal surgery or anatomic nasal deformity.

TEST DRAFT NOTE: The source protocol contains wording that may conflict with inclusion of healthy controls; the final eligibility text must be reconciled with the ethics-approved protocol before release.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

그룹/코호트 수

코호트 및 개입

그룹/코호트
Scabies with impetiginized lesions Participants with dermatologist-confirmed scabies and an active impetiginized skin lesion suggestive of secondary bacterial infection.
Atopic dermatitis with impetiginized lesions Participants with dermatologist-confirmed atopic dermatitis and an active impetiginized skin lesion suggestive of secondary bacterial infection.
Healthy controls Participants without an inflammatory skin disease or clinical signs of infection; nasal swab sampling only.

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정	측정값 설명	기간
Concordance of bacterial species between impetiginized skin lesion and nasal cultures 기간: At baseline (enrollment)	Among participants in the scabies and atopic dermatitis groups with paired evaluable skin and nasal cultures, concordance will be defined as isolation of the same bacterial species from both anatomical sites. Species-level agreement will be summarized and evaluated using Cohen's kappa coefficient.	At baseline (enrollment)

2차 결과 측정

결과 측정	측정값 설명	기간
Bacterial profile of impetiginized skin lesions 기간: At baseline (enrollment)	The number and proportion of lesion cultures yielding Staphylococcus aureus, Streptococcus pyogenes, other bacteria, mixed growth, or no bacterial growth will be summarized.	At baseline (enrollment)
Nasal Staphylococcus aureus carriage across study groups 기간: At baseline (enrollment)	The number and proportion of participants with nasal Staphylococcus aureus carriage will be summarized for the scabies, atopic dermatitis, and healthy control groups.	At baseline (enrollment)
Antimicrobial susceptibility and resistance profile of bacterial isolates 기간: At baseline (enrollment)	Antimicrobial susceptibility results, including methicillin resistance among Staphylococcus aureus isolates and susceptibility to the antibiotics included in the laboratory panel, will be summarized for skin and nasal isolates.	At baseline (enrollment)
Clinical response at day 14 기간: 14 days after enrollment	Clinical response will be categorized as complete remission, partial response, no change, or worsening. Associations with bacterial species, methicillin resistance, antimicrobial resistance, nasal carriage, and skin-nasal concordance will be explored.	14 days after enrollment
Development of new skin lesions during follow-up 기간: Through 14 days after enrollment	The occurrence of new lesions during the 14-day follow-up period will be recorded.	Through 14 days after enrollment

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

Istanbul Medeniyet University

수사관

수석 연구원: TEST INVESTIGATOR - REPLACE, TEST AFFILIATION - REPLACE

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (추정된)

2026년 10월 1일

기본 완료 (추정된)

2027년 3월 1일

연구 완료 (추정된)

2027년 3월 1일

연구 등록 날짜

최초 제출

2026년 9월 4일

QC 기준을 충족하는 최초 제출