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GlossaryKeratin 19

protein in epithelial cells used as a cancer biomarker

Keratin 19 (KRT19 or CK19) is a type of protein found in the epithelial cells that line the surfaces and cavities of organs. It plays a crucial role in maintaining the structural integrity of these cells. In medical diagnostics, KRT19 is often used as a biomarker to detect certain types of cancers, as its expression levels can be indicative of tumor presence and progression.

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Research

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research Keratin 19 as a biochemical marker of skin stem cells in vivo and in vitro: keratin 19 expressing cells are differentially localized in function of anatomic sites, and their number varies with donor age and culture stage

441 citations , May 1996 in “Journal of Cell Science”

Keratin 19 helps identify skin stem cells, with its presence varying by body location, age, and culture stage.

research Keratin 19: Predicted Amino Acid Sequence and Broad Tissue Distribution Suggest it Evolved from Keratinocyte Keratins.

238 citations , May 1989 in “Journal of Investigative Dermatology”

research The Tissue-dependent Keratin 19 Gene Transcription Is Regulated by GKLF/KLF4 and Sp1

119 citations , September 2000 in “Journal of Biological Chemistry”

GKLF/KLF4 and Sp1 control Keratin 19 gene activity, influencing cancer-related changes.

research The Type I Keratin 19 Possesses Distinct and Context-dependent Assembly Properties

46 citations , December 1998 in “Journal of Biological Chemistry”

Keratin 19 forms less stable and shorter filaments than keratin 14, giving unique traits to certain skin cells.

research Transient expression of keratin 19 is induced in originally negative interfollicular epidermal cells by adhesion of suspended cells.

25 citations , October 2005 in “PubMed”

Keratin 19 expression in certain skin cells is temporary and not a reliable stem cell marker.

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Community Join

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community Hair Loss Breakthrough: Keratin Microsphere Gel Initiates Hair Regrowth in Days by Directly Targeting Follicles and Boosting Gene Expression - Gilmore Health News

in Treatment 463 upvotes 2 years ago

A new hair loss treatment involving Keratin Microsphere Gel is discussed, with skepticism and jokes about its effectiveness and comparisons to other treatments. Users are doubtful and make light of the situation, referencing past disappointments and the study's focus on mice.

community 1.5 year on finasteride,microneedling,and minoxidil.Nothing helps its getting even worse.Is it possible that finasteride doesnt work on everybody? 19m

in Treatment 14 upvotes 1 year ago

The user has been using topical finasteride, minoxidil, microneedling, and various supplements for hair loss without success, and is advised to reduce microneedling frequency and consider oral finasteride or dutasteride. It is noted that finasteride may not work for everyone, and some users suggest checking hormone levels and deficiencies.

community (UPDATE) 1y and 4m progress. 1mg fin daily, minoxidil foam twice a day, keto shampoo every other hair wash and hims thick fix shampoo and conditioner. Added saw palmetto, biotin + keratin and dermarolling into my routine. super happy, so glad hair loss isn’t consuming my life anymore

in Progress Pictures 39 upvotes 3 years ago

The individual has seen hair regrowth over a period of 1 year and 4 months using 1mg finasteride daily, minoxidil foam twice daily, ketoconazole shampoo, thick fix shampoo and conditioner, saw palmetto, biotin, keratin, and dermarolling. They are pleased with the results and no longer feel overwhelmed by hair loss.

community Finasteride stopped working. Losing ground on Dutasteride.

in Finasteride/Dutasteride 17 upvotes 3 months ago

The user started with Finasteride at 19, added Dutasteride and Minoxidil at 26, but continues to experience hair loss. Suggestions include checking health markers, considering genetics, and possibly increasing Minoxidil dosage.

community I bought a microscope, how does my scalp/hairs look? I've been suffering diffuse thinning and hair loss after covid and never recovered (2 yrs ago) I eat healthy, in shape and workout.

in Progress Pictures 87 upvotes 2 years ago

A person with hair loss since COVID-19 is considering treatments like finasteride and minoxidil but is hesitant due to potential side effects. Suggestions include visiting a dermatologist, using a ketoconazole shampoo, and considering that post-COVID hair loss might be an autoimmune response.

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Learn

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learn Overview

learn Keratin

learn Hydrolyzed Keratin

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