This treatment seems very odd, and as the paper clearly stipulate :
"Although
the exact mechanism of action of hair growth stimulation by PDO threads remains speculative, it is likely to
be similar to that of microneedling, involving enhanced expression of hair-related genes, release of growth factors like PDGF and direct activation of stem cells in the hair bulge area"
I don't think this procedure alone can be self sufficient to treat Androgenetic Alopecia, but could represent one more weapon in this battle
IMHO, I think there are other factors at play, as
@ALightInTheDark said
Botox and lifting solution seems effective on AAG.
There has been evidence in the past that Botox is effective, not by enhancing Wnt or releasing growth factors, but by reducing pressure on the perforating vasculature, and therefore increasing blood flow and oxygen concentration.The enzymatic conversion of testosterone to dihydrotestosterone is oxygen dependent. In low-oxygen environments, the conversion of testosterone to dihydrotestosterone is favored, whereas in high-oxygen environments, more testosterone is converted to estradiol.
Scalp skin tension measured on Androgenetic Alopecia patients
Treatment of Male Pattern Baldness with Botulinum Toxin: A Pilot Study
http://journals.lww.com/plasreconsurg/Fulltext/2010/11000/Treatment_of_Male_Pattern_Baldness_with_Botulinum.79.aspx?WT.mc_id=HPxADx20100319xMP<br />
This PDO threads procedure seems to cumulate both advantages as reducing scalp pressure and increasing blood flow
"During insertion, the scalp skin was stretched by the surgeon’s non-dominant hand to make it taut"
"...and
improved microcirculation seem to be the plausible mechanisms"
"Polydioxanone (PDO) filament, a synthetic absorbable suture prepared from polyester, poly (p-dioxanone) has high flexibility and high retention strength,
is non-allergenic and has a slow absorption rate (6–8 months)."
But also regulation of gene expression, Wnt signaling, and growth factors release by
foreign body reaction, and wounding like microneedling, again for 6-8 months
This is overall quite interesting, but ultimately the hormonal main culprit of this disease is unchanged.
But combined with a good androgen receptors antagonists, results can be even better