Androgenetic Alopecia
Androgenetic Alopecia - Related Videos
03:22
Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
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Cited by 54 •
2018
This paper aims to describe the interfollicular autologous platelet-rich plasma injections (0.20 mL x cm2) in the scalp of 23 patients affected by androgenetic alopecia at a depth of 5 mm using a medical injector gun equipped with a 30 gauge needle, in three sessions.
06:58
Frailty Assessment in an Aging Mouse Model
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2025
The goal of the present protocol is to provide instructions and guidelines for assessing physical frailty in C57Bl/6x129J laboratory mice. Specific details regarding each measure used in the physical frailty index are explained. Several methods for reporting frailty results are also presented.
05:28
Targeted Expression of GFP in the Hair Follicle Using Ex Vivo Viral Transduction
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Cited by 1 •
2008
The hair follicle is a highly complex appendage of the skin containing a multiplicity of cell types. The follicle undergoes constant cycling through the life of the organism including growth and resorption with growth dependent on specific stem cells. The targeting of the follicle by genes and stem cells to change its properties, in particular, the nature of the hair shaft is, discussed. Hair follicle delivery systems are described, such as liposomes and viral vectors for gene therapy. The...
12:23
Granulocyte-dependent Autoantibody-induced Skin Blistering
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2012
In the animal model described in our present work, purified IgG antibodies against a stretch of 200 amino acids (aa 757-967) of collagen VII are injected repeatedly into mice reproducing the blistering phenotype as well as the histo- and immunopathological features characteristic to human epidermolysis bullosa acquisita (EBA)1.
06:32
Operating Procedures of the Electrochemotherapy for Treatment of Tumor in Dogs and Cats
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Cited by 45 •
2016
Electrochemotherapy is the local treatment of solid tumors. The main mechanism is electroporation-mediated permeabilization of the tumor cells' membrane which enables increased internalization of cytostatics like bleomycin and cisplatin. Thus, antitumor effectiveness is potentiated at the site of the application of electric pulses to the tumors.
FAQs
The key molecular event is androgen receptor activation by dihydrotestosterone in susceptible follicles. This signaling shortens the hair-growth phase, so repeated cycles produce progressively miniaturized follicles and finer, shorter hairs. Studying this sequence helps bioengineers connect a defined molecular trigger with a measurable tissue-level outcome when testing models or candidate interventions.
Genetically influenced androgen sensitivity determines which follicles respond strongly to the hormonal signal. That sensitivity is therefore a central variable in experimental design: models can account for the susceptible follicle state rather than treating all follicles as biologically equivalent. This principle also supports personalized strategies, because restoration research can address follicle-specific responses.
Three-dimensional follicle models give researchers a bioengineered system for investigating follicle biology and tissue regeneration. Their value lies in providing a test setting in which androgen-related mechanisms and prospective interventions can be examined before focusing on restoration strategies. In this context, the models support drug screening alongside direct study of the biological changes associated with hair loss.
Each bioengineering component contributes a different experimental function. Cultured cells provide biological material for studying follicle behavior, biomaterials help construct engineered environments, and controlled delivery systems regulate how a candidate treatment is presented. Combining these elements allows investigators to examine mechanism and intervention within a designed platform, linking cellular responses to possible follicle-regeneration outcomes.
A typical research workflow begins by establishing a three-dimensional follicle model, incorporating cultured cells or biomaterials, and then applying a controlled delivery system to evaluate a potential therapy. Researchers can investigate androgen-related follicle changes and determine whether an intervention supports the intended regenerative objective. The workflow connects model construction, treatment testing, and outcome interpretation.
Bioengineered androgenetic alopecia systems support drug screening, hair-follicle regeneration research, and personalized treatment development. They provide a framework for studying the molecular effect of dihydrotestosterone, testing candidate therapies, and exploring how engineered interventions might restore growth. Within bioengineering, the condition serves both as a biological problem and as a test case for tissue-regeneration strategies.