papilla

(redirected from dermal papilla)
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Related to dermal papilla: rete ridges
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  • noun

Words related to papilla

(botany) a tiny outgrowth on the surface of a petal or leaf

a small nipple-shaped protuberance concerned with taste, touch, or smell

a small projection of tissue at the base of a hair or tooth or feather

References in periodicals archive ?
Terskikh studies a type of cell called dermal papilla.
On gestation day 95, the stromal cells located at the end of the hair follicles surrounded the dermal papilla cells forming the hair bulbs.
Dermal papilla cells present different markers, including those from hair follicle cells and dermal fibroblasts [11].
Moreover, EGCG promotes hair growth by stimulating proliferation and inhibiting apoptosis of hair dermal papilla cells [16].
The dermal papilla cells (DPCs) are recognized as the signalling centre in hair follicle morphogenesis and cycling (Stenn and Paus, 2001).
The dermal papilla is a highly active group of cells, and it is derived from the dermis mesenchyme, located at the base of the hair follicle.
Focal melanin incontinence was seen in the dermal papilla [Figure 5].
The research team developed a protocol that coaxed human pluripotent stem cells to become dermal papilla cells.
"Our next step is to transplant human dermal papilla cells derived from human pluripotent stem cells back into human subjects," said Terskikh.
Dermal papilla (the base of the hair follicle) is the source of adult stem cells.
These findings are consistent with another study in which RA lead to accumulation of Hyaluronate (HA) producing gaps between the cells in the superficial layers of epidermis; this was produced by increased activity of keratinocytes.28Hair follicle morphogenesis and hair cycling are controlled by complex bidirectional ectodermal mesenchymal interactions between epidermal keratinocytes and a specialized population of fibroblasts with inductive morphogenic properties which mature into dermal papilla of the hair follicle.29 In our study number of hair follicles were reduced in treated group and most of them were arrested at germ stage.
In the hair follicle, Rizvi and Wong [26] determined that stem cells are located in the outer root sheath and the hair matrix around the dermal papilla [27], which is consistent with data from the current study.
"We also need to establish the role of the host epidermal cells that the dermal papilla cells interact with, to make the new structures."