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Glossary Keratin 6

protein in skin, hair, and nails providing structural support

Keratin 6 (K6) is a type of protein found in the epithelial cells of the skin, hair, and nails. It plays a crucial role in the structural integrity and resilience of these tissues. Mutations in the KRT6 gene, which encodes Keratin 6, can lead to disorders such as pachyonychia congenita, characterized by thickened nails and other skin abnormalities.

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Research

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Type I Keratin 17 Protein Is Phosphorylated on Serine 44 by p90 Ribosomal Protein S6 Kinase 1 in a Growth- and Stress-Dependent Fashion

research Type I Keratin 17 Protein Is Phosphorylated on Serine 44 by p90 Ribosomal Protein S6 Kinase 1 (RSK1) in a Growth- and Stress-dependent Fashion

30 citations , December 2011 in “Journal of biological chemistry/The Journal of biological chemistry”

This study found that serine 44 in the N-terminal head domain of keratin 17 is phosphorylated in response to various stimuli affecting skin keratinocyte growth, linking K17 up-regulation with growth and stress responses in skin epithelium.

research 474 Stabilizing mutations of KLHL24 ubiquitin ligase cause loss of keratin 14 and human skin fragility

April 2017 in “Journal of Investigative Dermatology”

This study identified that dominant mutations in the KLHL24 gene cause epidermolysis bullosa through dysregulated autoubiquitination, leading to excessive degradation of keratin 14.

Topical Application of Anti-Cancer Drug Bortezomib Stimulates Proliferation of Follicular Cells and Induces Expression of Hair Keratins via GATA-3 Transcription Factor

research 440 Topical application of anti-cancer drug Bortezomib stimulates proliferation of follicular cells and induces expression of hair keratins via GATA-3 transcription factor

April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study found that topical bortezomib increased cell proliferation in hair follicles and sebaceous glands in mice and may activate hair keratin gene expression through GATA-3 transcription factors.

research Size Polymorphisms in the Human Ultrahigh Sulfur Hair Keratin-Associated Protein 4, KAP4, Gene Family

27 citations , June 2005 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study identified numerous size polymorphisms in the human ultrahigh sulfur KAP4 genes due to intragenic sequence variations, suggesting these polymorphisms may have arisen through deletions and duplications during evolution.

research Structural features and sites of expression of a new murine 65 kD and 48 kD hair-related keratin pair, associated with a special type of parakeratotic epithelial differentiation

28 citations , August 1992 in “Differentiation”

This study identified a new 65 kD and 48 kD keratin pair expressed in specific mouse epithelial sites, suggesting a unique evolutionary branch of hair-related keratins.

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Community Join

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community This is just a 45 day difference

in Progress Pictures 51 upvotes 1 year ago

The user started oral finasteride on February 3, 2025, and uses topical minoxidil, Nizoral, derma stamping, Vitamin D3 + K2, and biotin/keratin for hair loss. They reported significant progress in 45 days.

community ~ 4 months progress so far, hoping it gets better

67 upvotes 11 months ago

The user experienced significant hair regrowth after 4 months using oral minoxidil, oral dutasteride, topical minoxidil, Nizoral shampoo, microneedling, and various supplements. They reported increased body hair and some acne as side effects but noticed less hair breakage with silk pillows.

community Heavy diffuse shedding 4+ months into dutasteride

6 upvotes 3 weeks ago

A user in their 20s with androgenetic alopecia is experiencing heavy hair shedding after starting dutasteride and oral minoxidil, with concerns about scalp sensitivity and low vitamin D. They plan to consult a dermatologist for further evaluation, while others in the conversation share similar experiences with shedding after starting dutasteride.

community M29 - 4 YEARS on Dutasteride - almost no progress

6 upvotes 7 months ago

The user has been on a comprehensive hair loss treatment regimen for four years, including Dutasteride, topical and oral Minoxidil, and various other treatments, but has seen little progress and is considering a hair transplant. Despite trying multiple therapies, including PRP and exosome injections, the user is still experiencing hair thinning and is hesitant about trying peptides due to potential cancer risks.

community Male 49 - over 2 years now of Fin only

in Progress Pictures 153 upvotes 1 year ago

A 49-year-old male has been using finasteride for over two years, experiencing slow but steady hair regrowth without side effects, and is considering a hair transplant. He is hesitant to add minoxidil due to potential side effects and application hassle.

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Clinics

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learn Keratin

What role does keratin play in strengthening weak or thinning hair? Keratin strengthens hair by forming protective structures that prevent breakage and thinning.
Are keratin treatments good for people with alopecia, or do they only improve the hair’s appearance? Keratin treatments improve hair appearance but do not address alopecia or stimulate growth.
Is keratin in shampoos and conditioners actually absorbed by the hair, or does it just coat the surface? Keratin in shampoos mainly coats the hair rather than being absorbed.
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