PAI-1 Expression in Non-scarring Hair Loss

Overview

This study will investigate whether subjects who suffer from hair loss have increased levels of PAI-1 compared to age-matched control subjects. The level of PAI-1 expression will be determined in subjects without hair loss and in subjects with non-scarring hair loss, including androgenetic alopecia, telogen effluvium and alopecia areata.

Full Title of Study: “Evaluating PAI-1 Expression in the Hair Follicles of Patients With Non-scarring Hair Loss.”

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Cross-Sectional
  • Study Primary Completion Date: June 2021

Detailed Description

This study will compare the levels of PAI-1 expression in subjects with different forms of non-scarring hair loss and in these subjects vs normal age-matched controls. Hair loss subjects will have their Northwestern Memorial Hospital and Northwestern Medical Faculty Foundation medical records reviewed to ensure they meet inclusion and exclusion criteria. All subjects will have a 4 mm punch biopsy on the scalp. Tissue PAI-1 levels from scalp skin biopsies will be determined by immunohistochemical staining. Samples will be kept for approximately 15 years, after which time unused samples will be destroyed.

Arms, Groups and Cohorts

  • Non-scarring hair loss
    • Patients seen at Northwestern Memorial Hospital or Northwestern Medical Faculty Foundation physician offices that have undergone evaluation for hair loss and have a diagnosis of androgenetic alopecia, telogen effluvium or alopecia areata.
  • Control
    • Age-matched controls who do not have a history of hair loss and have normal scalp skin without evidence of hair loss.

Clinical Trial Outcome Measures

Primary Measures

  • PAI-1 expression level in scalp skin biopsy samples
    • Time Frame: Baseline
    • Tissue PAI-1 expression levels will be determined by immunohistochemistry, a three-layer biotin-strepavidin system. Positive PAI-1 expression per total tissue area will be quantified using the color-picker function in imaging software.The PAI-1 expression found in normal scalps will be compared to those found in scalps with hair loss.

Participating in This Clinical Trial

Inclusion Criteria

  • Age-matched control subjects who do not have a history of hair loss – A clinical and pathologic diagnosis of androgenetic alopecia, telogen effluvium, alopecia areata or normal scalp skin – All subjects must have given signed, informed consent prior to registration in study Exclusion Criteria:

  • History of previous hair transplantation – Current and past use of medications topically on the scalp – Clinical or pathologic diagnosis of a scarring alopecia – History of inflammatory conditions of the scalp such as psoriasis

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: 60 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Northwestern University
  • Provider of Information About this Clinical Study
    • Principal Investigator: Maria Colavincenzo, Assistant Professor in Dermatology – Northwestern University
  • Overall Official(s)
    • Maria Colavincenzo, MD, Principal Investigator, Northwestern University Feinberg School of Medicine

References

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