53 citations
,
September 1999 in “Journal of Synchrotron Radiation” This study shows that microdiffraction experiments reveal structural layers in keratinous tissues, each with different keratin types, potentially explaining their dual role as mechanical support and chemical barriers.
180 citations
,
April 2002 in “Cell Death and Differentiation” 13 citations
,
November 1959 in “Annals of the New York Academy of Sciences” 30 citations
,
November 1992 in “The Journal of Dermatology” This review discusses the roles of filaggrin and trichohyalin in keratinocyte differentiation and reports no new results; the authors introduce possible hybrid granules in tongue epithelia.
6 citations
,
July 2017 in “Clinical and Experimental Dermatology” This report presents four new cases of follicular porokeratosis, which exhibit distinct histological features where the cornoid lamella are confined to the follicular ostia.
88 citations
,
June 2000 in “Journal of Investigative Dermatology” Keratin 17 is important for hair and nail structure and affects pachyonychia congenita symptoms.
198 citations
,
March 1999 in “Journal of Investigative Dermatology” This study found that keratin 15 expression is downregulated in hyperproliferative conditions like psoriasis and hypertrophic scars, suggesting it is not compatible with keratinocyte activation.
25 citations
,
January 2003 in “Plastic & Reconstructive Surgery” This study indicates that nail-matrical fibroblasts can induce hard keratin expression in non-nail-matrical keratinocytes, suggesting potential for using non-nail-matrical epidermal grafts to treat nail injuries.
356 citations
,
December 1986 in “The journal of cell biology/The Journal of cell biology” This study found that specific human hair keratins are differentially expressed in the hair follicle, suggesting a shared pathway of epithelial differentiation between hair cortex and nail plate cells.
13 citations
,
April 1997 in “Biochemical and Biophysical Research Communications” This study observed that insulin-dependent diabetes induces specific molecular changes in the keratin structure of hair, potentially offering a new way to study diabetic complications through easily accessible tissues.
51 citations
,
March 1990 in “Journal of Investigative Dermatology” 40 citations
,
September 2010 in “Journal of Biological Chemistry” This study found that keratin K80, structurally similar to hair keratins, is broadly expressed in various epithelial tissues and is involved in intermediate filament formation with multiple type I partners.
1398 citations
,
May 2008 in “Histochemistry and Cell Biology” This review summarizes the cell type distribution and functional significance of human keratins, emphasizing their roles in tumor diagnosis and potential clinical applications, and reports no new clinical findings.
April 2009 in “The FASEB Journal” This study demonstrated that a keratin gel promotes nerve regeneration across critical defects in rabbit models, showing improved nerve conduction and muscle action potential compared to control treatments.
4 citations
,
April 2012 in “The journal of investigative dermatology/Journal of investigative dermatology” This study developed a mouse model lacking keratin 16 to replicate palmoplantar lesions, which may help uncover the molecular mechanisms driving these lesions in pachyonychia congenita and focal non-epidermolytic palmoplantar keratoderma.
60 citations
,
December 2003 in “Journal of Investigative Dermatology” This study found that keratin 6hf, a type II keratin, is expressed in specific regions of mouse and human hair and suggests potential interactions with keratin 17, impacting hair development and associated disorders.
186 citations
,
December 2012 in “Current opinion in cell biology” This review discusses the recent advancements in understanding how keratins influence cytoarchitecture, cell dynamics, and disease processes but reports no new clinical results; the authors highlight its roles in development and diseases like cancer.
7 citations
,
January 2017 in “Sub-cellular biochemistry/Subcellular biochemistry” 6 citations
,
October 1988 in “Clinics in Dermatology” This article reviews gaps in our understanding of molecular events in hair follicle growth, focusing on keratin synthesis and protein oxidation, but reports no new findings.
40 citations
,
May 2016 in “Proceedings of the National Academy of Sciences of the United States of America” This study found that the mechanical stiffening of the human hair follicle along the first millimeter is linked to changes in the keratin network architecture and composition during keratinization.
7 citations
,
April 2012 in “Biomolecular concepts” This article reviews the role of keratins in epithelial function and structure, discussing their involvement in growth control, organelle functions, and pathomechanisms of disorders, but reports no new clinical results.
13 citations
,
May 2001 in “Current problems in dermatology” Keratin proteins in epithelial cells are dynamic and crucial for cell processes and disease understanding.
92 citations
,
April 1999 in “The journal of investigative dermatology/Journal of investigative dermatology” This study suggests that keratin 9 expression in nonpalmoplantar keratinocytes can be induced by signals from palmoplantar fibroblasts, potentially enabling the use of nonpalmoplantar epidermis to treat palmoplantar wounds.
17 citations
,
February 2015 in “Cell Death and Disease” This study found that inhibiting AP1 transcription factor activity in the suprabasal epidermis of mice alters keratinocyte gene expression, reducing barrier integrity and mimicking human keratoderma.
1 citations
,
January 2012 in “Juntendō Igaku/Juntendo igaku” This study found that a simplified classification based on clinical and morphological features may aid in the diagnosis and initial management of inherited keratinizing disorders, although genetic analysis is essential for definitive diagnosis.
80 citations
,
June 2002 in “Molecular Biology of the Cell” This study found that type II keratins in proliferating epithelial tissues are phosphorylated at a conserved motif during mitosis and stress, impacting keratin solubilization and reorganization.
7 citations
,
November 2022 in “Communications biology” This study found that injecting keratin into the skin of mice promoted hair growth, potentially through keratin's interaction with hair-forming cells and changes in the microenvironment.
This chapter reviews various skin disorders classified as Mendelian disorders of cornification and reports no new clinical findings, highlighting the complexity of genetics involved in inherited ichthyoses.
28 citations
,
July 2000 in “PubMed” This study found no structural differences between in vitro and in vivo grown hair, with keratinization and organization of keratin being comparable in both settings.
4 citations
,
April 1989 in “The Journal of Dermatology” This study observed in mouse skin that trichohyalin granules in hair follicles transform into filamentous structures as inner root sheath cells differentiate and cornify.