125 results about "Dermal papillae" patented technology

A method using optical coherence tomography to capture the microvascular network of the superficial layer of the finger skin for the purpose of fingerprint authentication and liveness detection. At the dermal papilla region, the vascular pattern follows the same pattern of the fingerprint and this vascular pattern forms a live vascular fingerprint. This live vascular fingerprint provides for ultrahigh security and a unique way for fingerprint-based personal verification. Because the system is based on blood flow, which only exists in a living person, the technique is robust against spoof attaching. After performing non-contact in-vivo imaging of a human fingertip, a three dimensional vasculature image is reconstructed from a plurality of vasculature tomography images and at least one vasculature fingerprint image which corresponds to the fingertip is extracted from the three dimensional vasculature image. This extracted image may then be compared to known fingerprint database for authentication or for liveness detection.

A method for the preparation of dermal papilla tissue comprising the step of culturing mesenchymal stem cells in a medium having a specific composition is provided. The method makes it possible to form in vitro a quantity of dermal papilla tissues having hair follicle inducting ability and, accordingly, it can be effectively used for the treatment of alopecia through cell transplantation.

The invention relates to a preparation method of artificial skin, in particular to a preparation method of artificial skin with hair follicles and the skin made by the method, belonging to biomedical field. The preparation method comprises the following steps: (1) preparing the epithelial cells of the hair follicle; (2) culturing the dermal papilla cells; (3) culturing the artificial skin with hair follicles. The preparation method of artificial skin has the advantages that: (1) the invention originally prepares artificial skin with hair follicles on skin support by hair follicle cells, and reduces the antigenicity greatly compared with the artificial skin made by animal cells; (2) the artificial skin comprises hair follicles, and enable to do physiological functions of skin; (3) the artificial skin is not easy to shrink but easy to absorb; (4) the artificial skin can be used as wound-cover material for large area burn wounded person in clinic and accelerates the wound to heal naturally; (5) the invention resolves the trouble of skin source for large area burn; (6) the preparation method is reasonable in design, convenient in operation and easy in scale production.

A dermal papilla cell growth promoter, a hair growth stimulant and a hair growth tonic containing a compound having an activity of inhibiting the function of WNT-5A.

The present invention provides a method for maintaining and promoting hair thickening by increasing the expression of keratinocyte growth factor (FGF-7) in hair follicle cells, and preferably dermal papilla cells, a composition for increasing expression of FGF-7 that contains adenosine and/or a derivative thereof, and particularly, an external scalp preparation for maintaining and promoting hair thickening.

Whether or not a sample of skin or of a skin equivalent contains such amount of a papillary fibroblast population as to be considered a normal skin is determined by labelling said skin or skin equivalent with at least one antibody specific for papillary fibroblasts and evaluating the extent of such labelling as a marker for skin or skin equivalent quality.

The application describes a method of generating a hair follicle, comprising administering a composition comprising epidermal matrix cells, dermal papilla cells, dermal sheath cells and outer root sheath cells to the scalp of a mammal. The composition may optionally be administered with a hair growth agent and/or a carrier. The application also describes a composition comprising epidermal matrix cells, dermal papilla cells, dermal sheath cells and outer root sheath cells and the use of the composition to generate hair follicles.

Methods for identifying trichogenic dermal cells, including dermal papilla cells and dermal sheath cells, capable of inducing hair follicle formation when injected into skin are provided. It has been discovered that EGF latrophilin and seven transmembrane domain-containing protein 1 (ELTD1). Transmembrane Protein 108 (TMEM1 08), Hyaluronan and proteoglycan link protein 1 (HAPLN1) are biomarkers that can be used to detect, identify, and distinguish trichogenic dermal cells, i.e., that are able to induce hair follicle formation, from other skin cells. Populations of skin cells enriched with trichogenic dermal cells can be produced by selecting for and enriching for dermal cells that express ELTD1, TMEM1 08, HAPLN1, or a combination thereof.

The invention relates to an injection capable of treating androgenetic alopecia with dermal papilla cell exosomes. The injection is a normal saline solvent containing dermal papilla cell exosomes. A preparation method of the injection comprises fiver steps including dermal papilla cell separation, dermal papilla cell adherent culture, dermal papilla cell stimulation induced culture, exosome freezedried powder preparation, and injection preparation. The amount of the exosomes secreted by the dermal papilla cells prepared using the preparation method is large, the content of effective components capable of promoting hair regeneration is high, and the treatment effect of the injection on androgenetic alopecia is excellent.

A method of enabling effective hair growth and furthermore, inducing hair growth closely similar to the natural hair state in the case of transplanting dermal papillae or cultured dermal papilla cells into the skin to regenerate the hair, characterized by comprising transplanting a composition containing the following components into an epidermis defect site: (a) dermal papillae or dermal papilla cells, (b) an epidermal tissue or epidermal cells and/or (c) a tissue constituting hair follicles or cells thereof.

An object of the present invention is to promote hair growth or hair regeneration by promoting formation and/or regeneration of hair follicles. A method is provided for promoting formation and/or regeneration of hair follicles, comprising maintaining or increasing expression of one or a plurality of genes involved in cell adhesion in dermal papilla cells.

The present invention relates to dermal papilla-specific markers and a method for isolating dermal papilla cells using the same. Dermal papilla cells isolated in accordance with the method of the invention and treated with BMP6 are useful for promoting hair growth.

The invention discloses a hair growth inducer, which comprises an active ingredient composed of tofacitinib and minoxidil with a mass percentage of 0.1:99.9-99.9:0.1. The hair growth inducing agent provided by the invention, its active ingredient comprises tofacitinib and minoxidil, wherein tofacitinib is a kind of JAK inhibitor, can interact with target cells (such as dermis, epidermis, dermal papilla cells or hair follicles) Cell) specific protein active site selectively binds, inhibits the transmission of cell pathway signals and the synthesis of characteristic cytokines, thereby reducing the symptoms associated with hair loss diseases; Minoxidil is a potassium ion channel opener that can directly relax Vascular smooth muscle has a powerful dilation effect on small arteries, reduces peripheral resistance, promotes the growth of hair follicle cells, and thus regenerates hair; the combination of these two substances synergistically acts on the target protein of target cells and vascular smooth muscle, and inhibits cytokines Synthesis and accelerated blood circulation, in order to achieve a significant effect of promoting hair regeneration.

Provided are a pharmaceutical composition, a cosmetic composition and health foods for preventing and treating alopecia disorder, which include a norgalanthamine compound as an active ingredient. Since the norgalanthamine compound has an effect on growth and proliferation of dermal papilla cells that play an important role in hair growth, the norgalanthamine compound may be used for the pharmaceutical composition, the cosmetic composition and health foods, which are useful in preventing and treating alopecia disorder.

The invention discloses a method for restoring the dryness or proliferative ability of hair follicle-derived cells, comprising the following steps: cutting umbilical cord with removed arteries and veins, culturing by adding a low-sugar DMEM culture solution containing bovine serum and penicillin-streptomycin, and carrying out subculture by trypsinization when mesenchymal stem cell fusion reaches 70-80%; continuously culturing by replacing a medium without exosome serum when the cells are passaged to the 3rd to 5th generation and cell fusion reaches 60-80%; extracting by a ultracentrifugation method to obtain exosomes of mesenchymal stem cells; carrying out isolated culture on dermal papillae cells by an improved two-step enzymatic method; and culturing the obtained dermal papillae cells ina DEME basal medium, which contains PDGF, KGF, VEGF and exosomes of mesenchymal stem cells. The method of the invention can effectively restore the dryness of hair follicle-derived cells, and regulates the normal physiological metabolism of hair follicle cells by secreting various regulatory factors, thus solving the problem of alopecia from the perspective of hair follicle physiology.

Pharmaceutical compositions for promoting hair follicle regeneration and their respective preparation methods are provided to overcome the ineffectiveness and low efficiency of the conventional hair follicle regeneration techniques. The methods for preparing the pharmaceutical compositions for promoting hair follicle regeneration include seeding dermal papilla cells and adipocyte lineage cells on a culture material in order for the dermal papilla cells and the adipocyte lineage cells to jointly assemble cell spheres. The pharmaceutical compositions can effectively enhance the effect and efficiency of hair follicle regeneration and thereby promote the regeneration of hair follicles.

The invention discloses a preparation method of a cell suspension for promoting hair regeneration and preventing alopecia. According to the method, scalp epidermal cells and dermal papilla cells are separated from scalp tissues, and the scalp epidermal cells and the dermal papilla cells are subjected to multiplication culture to prepare the cell suspension for preparing an injection for treating androgenic alopecia, and the injection is derived from patients without immune rejection reaction, has good cell activity, strong regeneration capability and high effective rate for treating the androgenic alopecia; and moreover, the injection can be prepared only by taking a small amount of scalp tissues, and the transplantation efficiency is high.