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Related Concept Videos

Renewal of Skin Epidermal Stem Cells01:12

Renewal of Skin Epidermal Stem Cells

The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular cells,...
The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
Cells of the Epidermis01:24

Cells of the Epidermis

The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...
Papillary Dermis01:11

Papillary Dermis

Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
Pigmentation01:19

Pigmentation

The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...

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Related Experiment Video

Updated: Jul 1, 2026

Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues
08:06

Y-27632 Enriches the Yield of Human Melanocytes from Adult Skin Tissues

Published on: July 8, 2020

Telomeres in skin aging.

Zibin Liu1, Chang Sun1, Zhaofeng Zhang2,3

  • 1Beijing Qingyan Boshi Health Management Co., Ltd, No. 36, Chuangyuan Road, Chaoyang District, Beijing, China.

Biogerontology
|March 30, 2025
PubMed
Summary
This summary is machine-generated.

Telomere length and telomerase activity are key indicators of skin aging. Research explores their role in skin aging, proposing telomere length as a predictor and discussing telomere-based anti-aging strategies.

Keywords:
Anti-aging strategiesCell agingSkin agingTelomeraseTelomeres

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Area of Science:

  • Dermatology
  • Molecular Biology
  • Gerontology

Background:

  • Skin aging is a complex process influenced by intrinsic and extrinsic factors.
  • Telomeres and telomerase activity are recognized as crucial indicators of cellular aging.
  • Understanding these mechanisms is vital for developing effective anti-aging interventions.

Purpose of the Study:

  • To comprehensively review the association between telomeres and skin aging.
  • To analyze the impact of telomere dynamics on skin biological functions.
  • To explore telomere length as a potential biomarker for predicting skin aging.

Main Methods:

  • Literature review summarizing telomere structure, function, and regulation.
  • Analysis of biological markers associated with telomere shortening and skin aging.
  • Synthesis of recent research on telomere length correlation with skin aging and predictive modeling.

Main Results:

  • Telomere attrition and altered telomerase activity are linked to skin aging processes.
  • Telomere length serves as a potential indicator for predicting skin aging.
  • Various anti-aging strategies targeting telomere protection have been identified.

Conclusions:

  • Telomeres play a significant role in the biological mechanisms of skin aging.
  • Telomere length offers a novel perspective for predicting and potentially intervening in skin aging.
  • This review provides a systematic overview and future directions for telomere-focused skin aging research.