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Home News

Has baldness finally been cured?

A drug developed to treat brittle bones could cure baldness, suggests a new study. Researchers found that the drug, originally designed as a treatment for osteoporosis, has a “dramatic stimulatory effect” on human hair follicles donated by patients undergoing hair transplantation surgery. Currently only two drugs – minoxidil and finasteride – are available for treatment […]

Joe Mellor by Joe Mellor
2018-05-08 19:00
in News, Science
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A drug developed to treat brittle bones could cure baldness, suggests a new study.

Researchers found that the drug, originally designed as a treatment for osteoporosis, has a “dramatic stimulatory effect” on human hair follicles donated by patients undergoing hair transplantation surgery.

Currently only two drugs – minoxidil and finasteride – are available for treatment of male-pattern balding.

But both those medications have side effects, and often produce disappointing hair regrowth results.

The only other option available to patients is a hair transplant.

Dr Nathan Hawkshaw and colleagues at The University of Manchester’s Centre for Dermatology Research sought to develop new ways to promote human hair growth with the hope of finding new drugs for treating androgenetic alopecia.

The approach was to first identify the molecular mechanisms of an old immunosuppressive drug, Cyclosporine A (CsA), which has been used since the 1980s as a crucial drug that suppresses transplant rejection and autoimmune diseases.

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However, it often has severe side-effects, the least serious – but most interesting – of which is that it enhances cosmetically unwanted hair growth.

The researchers conducted a full gene expression analysis of isolated human scalp hair follicles treated with CsA.

The analysis revealed that CsA reduces the expression of SFRP1, a protein that inhibits the development and growth of many tissues, including hair follicles.

The researchers said that the analysis also explans why CsA so often induces undesired hair growth in patients as it removes an inbuilt and potent molecular brake on human hair growth.

Immunofluorescence of β-catenin protein (red) and cell nuclei (blue) in the human hair follicle bulb, the command center for maintaining hair growth.

They said the inhibitory mechanism is completely unrelated to CsA’s immunosuppressive activities, making SFRP1 a “new and highly promising” therapeutic target for anti-hair loss strategies.

After some detective work, Dr Hawkshaw found that a compound originally developed to treat osteoporosis, called WAY-316606, targets the same mechanism as CsA by specifically antagonising SFRP1.

When he then treated hair follicles with WAY-316606, the unrelated agent also effectively enhanced human hair growth like CsA.

He argued that the external application of WAY-316606, or similar compounds to balding human scalp, may promote hair growth to the same magnitude as CsA or even better, but without its side effects.

Dr Hawkshaw said: “Thanks to our collaboration with a local hair transplant surgeon, Dr Asim Shahmalak, we were able to conduct our experiments with scalp hair follicles that had generously been donated by over 40 patients and were then tested in organ cultures.

“This makes our research clinically very relevant, as many hair research studies only use cell culture.”

He added: “When the hair growth-promoting effects of CsA were previously studied in mice, a very different molecular mechanism of action was suggested; had we relied on these mouse research concepts, we would have been barking up the wrong tree.

“The fact this new agent, which had never even been considered in a hair loss context, promotes human hair growth is exciting because of its translational potential: it could one day make a real difference to people who suffer from hair loss.

“Clearly though, a clinical trial is required next to tell us whether this drug or similar compounds are both effective and safe in hair loss patients.”

England rugby scrum-half gets hair transplant after getting taunted for going bald

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