TY - JOUR
T1 - Fibroproliferative genes are preferentially expressed in central centrifugal cicatricial alopecia
AU - Aguh, Crystal
AU - Dina, Yemisi
AU - Talbot, C. Conover
AU - Garza, Luis
N1 - Publisher Copyright:
© 2018 American Academy of Dermatology, Inc.
PY - 2018/11
Y1 - 2018/11
N2 - Background: Central centrifugal cicatricial alopecia (CCCA) is a primary cicatricial alopecia that most commonly affects women of African descent. Like CCCA, fibroproliferative disorders (FPDs) such as keloids, atherosclerosis, and fibroids are characterized by low-grade inflammation and irritation, resulting in end-stage fibrosis. Objective: We sought to determine whether fibroproliferative genes were up-regulated in patients with CCCA. Methods: A total of 5 patients with biopsy-proven CCCA were recruited for this study. Two scalp biopsy specimens were obtained from each patient; 1 from CCCA-affected vertex scalp and 1 from the unaffected occipital scalp. Microarray analysis was performed to determine the differential gene expression patterns. Results: There was an upregulation of genes implicated in FPDs in patients with CCCA. Specifically, we noted increased expression of platelet derived growth factor gene (PDGF), collagen I gene (COL I), collagen III gene (COL III), matrix metallopeptidase 1 gene (MMP1), matrix metallopeptidase 2 gene (MMP2), matrix metallopeptidase 7 gene (MMP7), and matrix metallopeptidase 9 gene (MMP9) in affected scalp compared with in unaffected scalp. Significant overlap in the canonic pathways was noted between patients with CCCA and patients with both atherosclerosis and hepatic fibrosis (P <.001). Limitations: Small sample size and the use of whole skin tissue for analysis. Conclusion: We have identified the upregulation of critical genes implicated in FPDs in the gene expression profile of patients with CCCA. These findings may help identify future therapeutic targets for this otherwise difficult-to-treat condition.
AB - Background: Central centrifugal cicatricial alopecia (CCCA) is a primary cicatricial alopecia that most commonly affects women of African descent. Like CCCA, fibroproliferative disorders (FPDs) such as keloids, atherosclerosis, and fibroids are characterized by low-grade inflammation and irritation, resulting in end-stage fibrosis. Objective: We sought to determine whether fibroproliferative genes were up-regulated in patients with CCCA. Methods: A total of 5 patients with biopsy-proven CCCA were recruited for this study. Two scalp biopsy specimens were obtained from each patient; 1 from CCCA-affected vertex scalp and 1 from the unaffected occipital scalp. Microarray analysis was performed to determine the differential gene expression patterns. Results: There was an upregulation of genes implicated in FPDs in patients with CCCA. Specifically, we noted increased expression of platelet derived growth factor gene (PDGF), collagen I gene (COL I), collagen III gene (COL III), matrix metallopeptidase 1 gene (MMP1), matrix metallopeptidase 2 gene (MMP2), matrix metallopeptidase 7 gene (MMP7), and matrix metallopeptidase 9 gene (MMP9) in affected scalp compared with in unaffected scalp. Significant overlap in the canonic pathways was noted between patients with CCCA and patients with both atherosclerosis and hepatic fibrosis (P <.001). Limitations: Small sample size and the use of whole skin tissue for analysis. Conclusion: We have identified the upregulation of critical genes implicated in FPDs in the gene expression profile of patients with CCCA. These findings may help identify future therapeutic targets for this otherwise difficult-to-treat condition.
KW - alopecia
KW - central centrifugal cicatricial alopecia
KW - cicatricial alopecia
KW - fibroproliferative disorders
KW - fibrosis
KW - therapy
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U2 - 10.1016/j.jaad.2018.05.1257
DO - 10.1016/j.jaad.2018.05.1257
M3 - Article
C2 - 29913259
AN - SCOPUS:85054564805
SN - 0190-9622
VL - 79
SP - 904-912.e1
JO - Journal of the American Academy of Dermatology
JF - Journal of the American Academy of Dermatology
IS - 5
ER -