latanoprost and Alopecia

Androgenetic alopecia (AGA) is characterized by non-scarring follicle miniaturization. Despite the success of approved therapies, commonly reported side effects and the need for continual use has led to the investigation of alternative therapies. The aim of this paper is to critically review the success of off-label, topical monotherapies for treatment of AGA in men. A literature search was conducted to obtain randomized, controlled and blinded studies that investigated off-label, topical, monotherapies in male patients. Hair density, hair diameter and hair growth were used to evaluate treatment success. Fourteen off-label topical therapies were investigated among the 16 studies that met inclusion criteria. Nine off-label therapies were reported to produce a significantly greater improvement in hair restoration parameters (e.g. mean change from hair count and hair diameter) as compared to placebo (p < 0.05 for all treatments). In two studies, procyanidin oligomers exhibited greater efficacy over vehicle with response to mean change in hair density (hairs/cm

Topics: Administration, Topical; Adult; Alopecia; Biflavonoids; Catechin; Hair; Humans; Latanoprost; Off-Label Use; Proanthocyanidins; Randomized Controlled Trials as Topic; Treatment Outcome

Alopecia areata (AA) is a recurrent chronic disease that affects hair follicles and results in hair loss. Make an increase in the number, thickness, and length of eyelashes is an important side effect of latanoprost eye drop. This study aimed to evaluate the effect of hypertrichosis property of latanoprost in the treatment of scalp AA. In this randomized double-blind placebo-controlled trial, 30 participants with scalp AA assigned to receive either topical latanoprost 0.005% solution or placebo for 12 weeks. In both arms, patients also received clobetasol 0.05% cream in isopropyl alcohol (1:1). The hair loss area pictured at baseline and the end of the fourth, eighth, and twelfth weeks. According to the images, the dermatologist assessed the hair loss area, hair density, and the severity of alopecia. Latanoprost significantly increased hair density (37.2 ± 26.1 vs. 14.6 ± 18.6) and regrowth (58.3 ± 39.3 vs. 21.6 ± 24.1) based on the Severity of Alopecia Tool (SALT) system compared to the control group (p = 0.03 and 0.02, respectively). However, there were no significant differences between the two groups in reduction in the hair loss area and SALT, and the incidence of side effects (p = 0.718, 0.262, and ≥0.99, respectively). Results showed the acceptable safety and efficacy of latanoprost 0.005% solution to increase hair density and regrowth. So, it could be safely used for the management of scalp AA.

Topics: Alopecia; Alopecia Areata; Double-Blind Method; Humans; Latanoprost; Scalp; Treatment Outcome

Alopecia areata (AA), a polygenic and chronic autoimmune disease and there is no definitive cure. We aimed to evaluate latanoprost effects in patients with AA. In this controlled randomized double-blind clinical trial, we enrolled patients with AA randomly assigned to six groups of 18; Group 1 received latanoprost eye drops; group 2 minoxidil 5% solution; group 3 latanoprost eye drops and minoxidil 5% solution; group 4 betamethasone and minoxidil 5% solution; group 5 betamethasone solution and latanoprost eye drops; group 6 (the control group) betamethasone solution. The alopecia severity in patients before and after treatment was assessed by severity of alopecia tool (SALT). One hundred and eight patients, 50% male (mean age: 32.6 ± 10.4) were studied. The overall SALT score decreased in all. After 2 weeks, patients receiving betamethason-minoxidil and betamethason-latanoprost showed more decline in their SALT than other groups. In final, there was statistically significant difference among betamethasone-latanoprost group with minoxidil, betamethasone-minoxidil and betamethasone groups. Regrowth was higher in latanoprost and betamethasone-latanoprost groups than minoxidil. Topical latanoprost added to therapeutic efficacy of topical betamethason and minoxidil in treating patchy AA, suggesting it being beneficial and safe adjuvant therapy and add to efficacy of topical treatments without any adverse effects.

Topics: Administration, Topical; Adult; Alopecia; Alopecia Areata; Betamethasone; Double-Blind Method; Female; Humans; Latanoprost; Male; Minoxidil; Ophthalmic Solutions; Patient Satisfaction; Personal Satisfaction; Treatment Outcome; Young Adult

Latanoprost is a prostaglandin analogue used to treat glaucoma. It can cause adverse effects, such as iridial and periocular hyperpigmentation, and eyelash changes including pigmentation and increased thickness, length, and number. Latanoprost has been used to treat eyelash alopecia, but knowledge on its effects on human scalp hair growth is not available.. The primary objectives were to assess the efficacy of latanoprost on hair growth and pigmentation. The secondary objectives were to assess the effect on scalp pigmentation; investigate the treatment duration needed to affect hair growth, hair pigmentation, and scalp pigmentation; and assess safety of latanoprost.. Sixteen men with mild androgenetic alopecia (Hamilton II-III) were included. Latanoprost 0.1% and placebo were applied daily for 24 weeks on two minizones on the scalp. Measurements on hair growth, density, diameter, pigmentation, and anagen/telogen ratio were performed throughout the study.. At 24 weeks, an increased hair density on the latanoprost-treated site was observed compared with baseline (n = 16, P < .001) and placebo-treated site (P = .0004).. Only young men with mild androgenetic alopecia were included. The results may not be applicable to other patient groups. Choice of investigational site may have affected the results.. Latanoprost significantly increased hair density (terminal and vellus hairs) at 24 weeks compared with baseline and the placebo-treated area. Latanoprost could be useful in stimulating hair follicle activity and treating hair loss.

Topics: Administration, Topical; Adult; Alopecia; Dose-Response Relationship, Drug; Double-Blind Method; Drug Administration Schedule; Follow-Up Studies; Hair; Humans; Latanoprost; Male; Pigmentation; Pilot Projects; Prostaglandins F, Synthetic; Severity of Illness Index; Time Factors; Treatment Outcome; Young Adult

Alopecia is a condition associated with different etiologies, ranging from hormonal changes to chemotherapy, that affects over 80 million people in the USA. Nevertheless, there are currently few FDA-approved drugs for topical treatment, and existing formulations still present skin irritation issues, compromising treatment adherence. This work aimed to develop a safe formulation based on nanostructured lipid carriers (NLC) that entrap an association of minoxidil and latanoprost and target drug delivery to the hair follicles. To do so, thermal techniques combined with FTIR were used to assess the chemical compatibility of the proposed drug association. Then, NLC with 393.5 ± 36.0 nm (PdI < 0.4) and +22.5 ± 0.2 mV zeta potential were produced and shown to entrap 86.9% of minoxidil and 99.9% of latanoprost efficiently. In vitro, the free drug combination was indicated to exert positive effects over human primary epidermal keratinocytes, supporting cell proliferation, migration and inducing the mRNA expression of MKI67 proliferation marker and VEGF - a possible effector for minoxidil-mediated hair growth. Interestingly, such a favorable drug combination profile was optimized when delivered using our NLC. Furthermore, according to the HET-CAM and reconstructed human epidermis assays, the nanoformulation was well tolerated. Finally, drug penetration was evaluated in vitro using porcine skin. Such experiments indicated that the NLC could be deposited preferentially into the hair follicles, causing a considerable increase in the penetration of the two drugs in such structures, compared to the control (composed of the free compounds) and generating a target-effect of approximately 50% for both drugs. In summary, present results suggest that hair follicle-targeted delivery of the minoxidil and latanoprost combination is a promising alternative to treat alopecia.

Topics: Administration, Topical; Alopecia; Animals; Drug Delivery Systems; Hair Follicle; Humans; Latanoprost; Minoxidil; Swine

Latanoprost has recently been used to treat alopecia as it causes an increase in the capillary density of patients. This work presents for the first time the development of polymeric nanocapsules containing latanoprost for the topical treatment of alopecia. Poly-ε-caprolactone nanocapsules loading latanoprost were developed by nanoprecipitation of the polymer on the surface of drug oily nanodroplets. The method encapsulated 93.9 ± 0.4% of the drug into nanocapsules of 197.8 (± 1.2) nm (PdI = 0.15 ± 0.01). The nanosystem presented a zeta potential equal to - 30.1 ± 1.8 mV and was stable for at least 90 days when stored at 6°C. The colloidal aqueous dispersion was non-irritating, according to the in vitro HET-CAM test. The nanocapsules improved latanoprost accumulation into the hair follicles when topically applied on porcine skin, delivering 30% more drug to these skin structures relative to the control solution (P < 0.05). Also, with a simple manual massage, latanoprost accumulation was increased by twofold (P < 0.05). In conclusion, in addition to being a stable and safe formulation, nanocapsules enhanced latanoprost accumulation into the hair follicles, being a nanosystem with high potential for use as a topical formulation for the treatment of androgenic alopecia.

Topics: Administration, Topical; Alopecia; Animals; Humans; Latanoprost; Nanocapsules; Polymers; Swine

Latanoprost, a prostaglandin analog, has been reported to stimulate eyelash growth in patients using it in eye preparations for glaucoma and body and scalp hair growth when used topically in various animal models. Will prostaglandin analogs be the next agents used for forms of alopecia?

Topics: Alopecia; Animals; Dermatologic Agents; Hair; Humans; Latanoprost; Prostaglandins F, Synthetic

Latanoprost, a selective FP prostanoid receptor agonist used in the treatment of glaucoma, has a hypertrichotic side effect. Using the macaque model of androgenetic alopecia, we examined the effect of latanoprost on hair growth. Eight monkeys were divided into 2 groups; one group received a daily topical application of 50 microg/ml of latanoprost for 5 months; a control group had a daily application of vehicle. For an additional 3 months, 2 monkeys from each group were given 500 microg/ml latanoprost, while the remaining monkeys continued with the previous treatment. Hair growth was evaluated by monthly photographs and phototricho-graphic analysis. Fifty microg/ml of latanoprost caused minimal hair growth. Latanoprost at 500 microg/ml induced moderate to marked hair regrowth with 5-10% conversion of vellus hairs to intermediary or terminal hairs. The vehicle group showed no effect. Further evaluation of latanoprost as an agent for treatment of human androgenetic alopecia is indicated.

Topics: Administration, Topical; Alopecia; Animals; Disease Models, Animal; Dose-Response Relationship, Drug; Drug Administration Schedule; Female; Hair; Latanoprost; Macaca; Male; Pilot Projects; Prostaglandins F, Synthetic; Random Allocation; Reference Values; Treatment Outcome