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This study found that trichoblastic fibroma and basal cell carcinoma cannot be differentiated by cytokeratin expression patterns, while trichoepithelioma lacks CK7 expression, distinguishing it from the other two neoplasms.

This study found that keratin immunohistochemistry suggests neoplastic cells in eccrine and apocrine poromas are closely related to dermal sweat duct cells, but cannot differentiate these poromas based solely on keratin patterns.

This study suggests that basal cell carcinoma and trichoblastoma may share differentiation toward the hair follicle, as indicated by strong positivity in CK 15, follistatin, and Bmi‐1 markers.

This study reports that androgenetic alopecia patients exhibit reduced CK15 and tropoelastin expression and increased cellular senescence markers, indicating tissue damage in affected hair follicles and surrounding structures.

This study found that the expression of CK 15 and CK 19 in vitiligo patients undergoing phototherapy was correlated with improved repigmentation, suggesting their potential as markers for stem cell stimulation.

This study found that keratin 15 expression in trichoepitheliomas and some basal cell carcinomas suggests a link to hair follicle stem cells in the bulge.

This study found that CK15 is an unreliable marker for assessing bulge zone integrity in cicatricial alopecia follicles due to its altered expression in diseased conditions.

This study observed that cytokeratin 19 expression in cutaneous carcinomas correlates with the grade of squamous cell carcinomas, with more expression in higher-grade SCCs.

In this study, researchers observed that trichocytic and epithelial cytokeratins have distinct expression patterns within various human and bovine hair follicle cells, contributing to understanding hair follicle development and growth.

This review discusses the paradoxical effects of valproic acid on hair, noting that it can both cause alopecia and stimulate hair growth, but reports no new experimental findings.

This study found that trichocytic cytokeratins, typically found in hair, are also present in nails, filiform papillae of the tongue, and the epithelial reticulum of the thymus.

This study found that T cytokeratins appear more gradually and with complex coexpression patterns in developing nail structures compared to the more abrupt transition in hair follicles.

This research found that a monoclonal antibody (MAb 17) specifically reacts with certain subunits of trichocyte keratin in rats, and discovered that trichocyte keratin expression in hair and whiskers begins at different embryonic stages.

This study identified 12 new genes associated with the hair follicle and various stages of the hair cycle in mice, which could lead to novel targets for hair growth or depilation therapies.

This study observed that while X-ray radiation did not alter major hair keratin composition in mice, it decreased hair follicle stem cell markers and increased Krt5, suggesting potential as a radiation biomarker.

This study reports a case of cystic panfolliculoma, highlighting the role of epithelial-mesenchymal interactions in its pathogenesis and explaining its histological resemblance to trichofolliculoma.

This study found that VEGFR-2 activation may play a role in hair follicle differentiation, proliferation, and apoptosis by co-expressing with several key proteins in normal human scalp skin.

This article discusses the pathogenesis of hidradenitis suppurativa, highlighting follicular occlusion and inflammation as key factors in disease development, but reports no new clinical results.

This study suggests that the HCR risk allele within the PSORS1 locus may contribute to psoriasis susceptibility by altering gene expression related to skin structure and differentiation, although these changes alone might not result in clinical symptoms.

This study found that trichoblastomas and nodular basal cell carcinomas have similar cytokeratin expression patterns, indicating differentiation towards the outer root sheath epithelium.

The study examined cytokeratin expression in different bovine epithelial tissues, finding that hair follicles and nasolabial glands express both acidic and basic types, while other epithelia express only one type.

This article reviews cytokeratin expression patterns in epithelial tissues and tumors, suggesting these patterns can aid in differentiating primary and metastatic carcinomas, without presenting new clinical results.

This study examined the expression patterns of various cytokeratins in the outer root sheath of human anagen hair follicles, noting distinct differentiation patterns and localization of keratin markers.

The study found that CK15 expression, representing hair follicle stem cell activity, was reduced or absent in scarred primary cicatricial alopecia lesions, suggesting stem cell damage may contribute to the scarring process.

This study observed that cytokeratins are expressed at specific stages during human fetal hair follicle development, with early markers indicating cellular maturation and later markers appearing in more developed follicles.

This study found that scalp hair follicles had higher expression of cytokeratin 15 and distinct hair layers compared to other body regions, highlighting differences in hair follicle characteristics.

This study found that high levels of human cytokeratin 16 expression in transgenic mice lead to skin lesions and altered keratinocyte structure, suggesting potential implications for human skin disorders and wound healing.

This study found that orally administered Annurca apple extract improved hair length, thickness, weight, and density in mice, while also increasing the expression of hair growth-related genes and proteins, suggesting potential as a natural treatment for hair loss.

Cytokeratin-15 loss is not specific to any single type of scarring alopecia.

In this study, researchers established three specific cell lines from Cashmere goat hair follicles and found that cytokeratin 13 might be a novel biomarker for identifying dermal sheath cells.