July 2022 in “Journal of Investigative Dermatology” High platelet numbers in PRP may not be essential for hair growth, and certain growth factors could negatively affect treatment outcomes for hair loss.
3 citations
,
April 2021 in “PLoS ONE” Pulse electric fields can control the release of growth factors and serotonin from platelet-rich plasma, offering a tailored approach to wound healing.
13 citations
,
January 2020 in “Experimental Dermatology” PRP growth factor concentrations vary, no significant hair growth difference found.
5 citations
,
March 2020 in “Aids Reviews” Hair antiretroviral concentration is affected by hair type, segment position, housing, drug use, sexual behavior, kidney function, and genetics.
69 citations
,
May 2016 in “General and Comparative Endocrinology” External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.
118 citations
,
October 2014 in “Journal of Dairy Science” Tail switch hair is best for measuring cortisol in Holstein cows, with white hair and multiparous cows showing higher levels.
October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
136 citations
,
February 2017 in “International Journal of Molecular Sciences” PRP treatment improves hair growth, and the device used can affect results, with some being more effective.
11 citations
,
April 2020 in “Animals” Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
2 citations
,
December 2023 in “International journal of molecular sciences” Understanding keratinization is crucial for treating skin conditions like ichthyoses and psoriasis.
March 2023 in “Медицинский совет” Minoxidil works better for hair regrowth if you have higher SULT1A1 enzyme activity and ATP concentration.
33 citations
,
June 1995 in “International journal of legal medicine” Environmental factors can greatly reduce drug levels in hair.
115 citations
,
August 2020 in “International Journal of Molecular Sciences” A PRP concentration of 1.0 × 10^6 plt/μL is best for tissue repair.
64 citations
,
April 1972 in “American Journal of Clinical Nutrition” Hair chromium levels reflect nutritional status after standard washing.
January 2023 in “Journal of orthopedics & bone disorders” Platelet-rich plasma may not be very effective for bone healing and hair growth due to a substance it contains that blocks these processes.
EGF helps goat hair stem cells grow best at 15 ng/mL.
14 citations
,
March 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Patients with severe alopecia areata have higher levels of MIF, which decrease after successful treatment.
81 citations
,
September 2005 in “The American journal of pathology” Activin helps skin growth and healing mainly through stromal cells and affects keratinocytes based on its amount.
April 2026 in “Mathematics” This study presents a probabilistic framework using Monte Carlo simulations to quantify variability in platelet dose delivered (PDD) in platelet-rich plasma (PRP) therapies. By modeling PDD as a random variable influenced by platelet count, concentration factor, injected volume, and processing efficiency, the study conducted 100,000 iterations to explore uncertainty propagation. The simulations showed a right-skewed distribution of PDD with a median of 3.1 × 10^9 platelets and a coefficient of variation over 50%. Sensitivity analysis identified injected volume and concentration factor as major contributors to variability, with significant interaction effects. The findings highlight the utility of probabilistic modeling in understanding variability sources in PRP preparation and offer a framework for uncertainty quantification in similar biomedical systems.
November 2023 in “Global journal of medical research” Understanding the properties of hyaluronic acid helps improve its use in facial aging treatments.
12 citations
,
December 2020 in “Frontiers in Cell and Developmental Biology” The review found that the way Platelet-Rich Plasma is made varies a lot, which can change the results of medical treatments.
July 2023 in “Aesthetic Plastic Surgery” More research is needed to confirm if Platelet-Rich Plasma (PRP) is effective for treating hair loss.
8 citations
,
September 2016 in “Asian journal of beauty & cosmetology” Dendropanax morbifera leaf extract could be good for hair growth and cosmetic products because of its antioxidant properties and growth factor effects.
January 2014 in “Международный журнал прикладных и фундаментальных исследований” Zinc affects hair growth and may be linked to hair loss.
October 2022 in “Linköping University medical dissertations” The method shows hair testosterone levels reflect those in saliva, but are affected by various factors and may indicate a risk for heart attack.
January 1994 in “Skin research” EGF and TGF-α help maintain hair cell cultures, but TGF-β1 stops their growth.
July 2018 in “Hair transplant forum international” Different PRP systems produce varying levels of platelet concentrations.
23 citations
,
May 2009 in “International Journal of Dermatology” AR gene not major factor in female hair loss; different from male hair loss.
1 citations
,
January 2023 in “International journal of urology” Low zinc levels are linked to low testosterone but not to sexual problems.
December 2025 in “Biology Bulletin Reviews” Hair cortisol can indicate animal stress but varies with many factors.