Skin ageing and the smoker

Smokers look older than non-smokers of the same age, probably because they have higher levels of MMP-1 (matrix metalloproteinase 1) in their skin, according to a study in 24 March Lancet. MMP-1 is a zinc-dependent metalloproteinase that degrades collagen, which is important in maintaining the mechanical/elastic properties of connective tissue in the skin.Lahmann et al from Guy's, King's and St Thomas' School of Medicine, London, used PCR to measure mRNA in the buttock skin of 14 smokers and 19 n

| 1 min read

Register for free to listen to this article
Listen with Speechify
0:00
1:00
Share

Smokers look older than non-smokers of the same age, probably because they have higher levels of MMP-1 (matrix metalloproteinase 1) in their skin, according to a study in 24 March Lancet. MMP-1 is a zinc-dependent metalloproteinase that degrades collagen, which is important in maintaining the mechanical/elastic properties of connective tissue in the skin.

Lahmann et al from Guy's, King's and St Thomas' School of Medicine, London, used PCR to measure mRNA in the buttock skin of 14 smokers and 19 non-smokers. They found significantly more MMP-1 mRNA in the skin of smokers than in non-smokers. But the quantity of mRNA for the tissue inhibitor of metalloproteinases 1 (TIMP-1) did not differ between non-smokers and smokers (Lancet 2001, 357:935-936).

These findings confirm similar in vitro results in dermal fibroblasts and the authors suggest that MMP-1 might be important in the face-ageing effects of tobacco smoking, perhaps in combination with sunlight. (The ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!
Already a member? Login Here

Meet the Author

  • Tudor Toma

    This person does not yet have a bio.
Share
May digest 2025 cover
May 2025, Issue 1

Study Confirms Safety of Genetically Modified T Cells

A long-term study of nearly 800 patients demonstrated a strong safety profile for T cells engineered with viral vectors.

View this Issue
iStock

TaqMan Probe & Assays: Unveil What's Possible Together

Thermo Fisher Logo
Meet Aunty and Tackle Protein Stability Questions in Research and Development

Meet Aunty and Tackle Protein Stability Questions in Research and Development

Unchained Labs
Detecting Residual Cell Line-Derived DNA with Droplet Digital PCR

Detecting Residual Cell Line-Derived DNA with Droplet Digital PCR

Bio-Rad
How technology makes PCR instruments easier to use.

Making Real-Time PCR More Straightforward

Thermo Fisher Logo

Products

fujirebio-square-logo

Fujirebio Receives Marketing Clearance for Lumipulse® G pTau 217/ β-Amyloid 1-42 Plasma Ratio In-Vitro Diagnostic Test

The Scientist Placeholder Image

Biotium Launches New Phalloidin Conjugates with Extended F-actin Staining Stability for Greater Imaging Flexibility

Leica Microsystems Logo

Latest AI software simplifies image analysis and speeds up insights for scientists

BioSkryb Genomics Logo

BioSkryb Genomics and Tecan introduce a single-cell multiomics workflow for sequencing-ready libraries in under ten hours