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Glossary Shadow Cells

Shadow cells are a type of keratinocyte found in the hair follicle, specifically in the outer root sheath. They are characterized by their large size and reduced cytoplasmic content, which gives them a "shadowy" appearance under a microscope. These cells play a role in the hair growth cycle and are thought to be involved in the regeneration of hair follicles. Their presence and behavior can be relevant in understanding hair loss conditions, as changes in shadow cell populations may indicate disruptions in normal hair follicle function.

Related Terms

Ghost Cells

Research

5 / 305 results

research Bullous pilomatrixoma: Without a “Shadow” of doubt – Role of ROSE and cytology

1 citations , January 2022 in “Indian dermatology online journal”

This case report documents the presentation and diagnosis of a rare bullous pilomatrixoma in a 20-year-old female using fine needle aspiration cytopathology, highlighting diagnostic challenges and features.

research Brown shadow in lichen nitidus: A dermoscopic marker!

5 citations , January 2018 in “Indian Dermatology Online Journal”

This case report describes a strong dermoscopic and histopathological correlation in lichen nitidus, helping differentiate it from other similar conditions.

research The promising prospect of human hair follicle regeneration in the shadow of new tissue engineering strategies

February 2024 in “Tissue & Cell”

This review evaluates recent advancements in hair follicle bioengineering and discusses the potential for developing effective treatments for hair loss through tissue engineering, despite current challenges in creating functional cultured human hair cells.

research Expression of type I hair keratins in follicular tumours

26 citations , May 2001 in “British Journal of Dermatology”

This study suggests that pilomatrixomas' maturation towards areas of shadow cells is linked to a gradual loss of differentiation-specific hair keratins, supporting a hair matrix origin for the tumor.

research Pilomatricoma can differentiate not only towards hair matrix and hair cortex, but also follicular infundibulum, outer root sheath and hair bulge

18 citations , March 2009 in “Experimental Dermatology”

This study suggests that pilomatricoma can differentiate towards various hair follicle structures, including hair matrix, hair cortex, follicular infundibulum, outer root sheath, and hair bulge.

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community Why do celebrities call it Propecia while everyone else calls in Finasteride?

in Finasteride/Dutasteride 134 upvotes 1 year ago

Celebrities often use brand names like Propecia for finasteride due to brand recognition, marketing, and potential sponsorships. In contrast, the general public and online communities may use generic names, reflecting differences in cultural and healthcare practices.

community 22M , A year of progress on finesteride

39 upvotes 1 month ago

A 22-year-old male experienced progress with 0.5 mg daily finasteride for hair loss but noticed recent shedding, which may be a synchronized shed. Users suggest continuing the current dose, considering increasing to 1 mg, or exploring additional treatments like GHK-cu, while noting that watery semen is a common side effect.

community Hairloss has made me unrecognisable

123 upvotes 4 months ago

Hair loss has severely impacted the mental health and confidence of young individuals, making them feel unrecognizable and isolated. Treatments like oral minoxidil, finasteride, and PRP sessions are being considered, but results and side effects vary, leaving many feeling hopeless.

community 5 months on topical min + dermarolling 40m

403 upvotes 5 months ago

A 40-year-old male experienced significant hair regrowth and no hair fall after 5 months using topical minoxidil, dermarolling with a 1.0mm roller, Nizoral shampoo, and biotin gummies. He previously stopped oral finasteride due to daily pill concerns but now uses topical treatments without noticeable side effects.

community PP405 timeframe ? Could it replace current treatments ?

in Update 34 upvotes 1 year ago

PP405 is a potential new hair loss treatment that might replace finasteride and minoxidil, but it is still in clinical trials and may not be available until 2028-2031. There is skepticism about its effectiveness, with only a 20% increase in hair density observed in some participants.

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