Effect Of Microneedles Research Articles

The Effect of Microneedling on Skin Histology: Review of Literature

The Effect of Microneedling on Skin Histology: Review of Literature

Evaluation of microneedling with and without injectable-platelet rich fibrin for gingival augmentation in thin gingival phenotype-A randomized clinical trial

ObjectiveThe purpose of the current study was to investigate the effect of micro needling (MN) on gingival thickness (GT) and keratinized tissue width (KTW) in individuals with thin gingival phenotypes, either with or without injectable platelet-rich fibrin (i-PRF). Materials and methodsIn this randomized, split-mouth clinical trial, 15 systemically healthy patients, with thin gingival phenotype (<1.5 mm) were randomly treated with MN + i-PRF and MN. MN was performed on one side, and MN + i-PRF on the contralateral side of the same arch at 4 sessions with 10-day intervals. GT; KTW the primary outcome and Plaque index; gingival index Secondary outcome were assessed at baseline and at 1st, 3rd, and 6th months post-treatment. ResultsThe results of the present study showed that both techniques demonstrated a statistically significant increase in GT. GT showed a statistically significant increase from baseline (0.453 ± 0.069 mm in MN, 0.451 ± 0.069 mm in MN + i-PRF) (p = 0.81) to 1 month (0.567 ± 0.075 mm in MN, 0.649 ± 0.075 mm in MN + i-PRF) (p < 0.001*). A follow-up at 3rd month (0.566 ± 0.076 mm in MN, 0.647 ± 0.091 mm in MN + i-PRF) (p < 0.001*) and 6th month (0.564 ± 0.076 mm in MN, 0.644 ± 0.089 mm in MN + i-PRF) (p < 0.001*) showed a statistically significant increase. Intergroup comparison showed a statistically significant GT increase in MN + i-PRF sites at all the time intervals. No, statistically significant difference in KTW was observed in both groups from baseline to 6 months. ConclusionsThe utilization of MN + i-PRF stands as a minimally invasive, non-surgical method to improve GT. Interestingly, using i-PRF as an additional component demonstrated more favorable outcomes compared to using MN alone in enhancing tissue thickness.

The Effect of Microneedling on Acne Scars

The Effect of Microneedling on Acne Scars

A Review Article on Transdermal Drug Delivery System Based On- Microneedles

Every drug delivery system should work toward preserving the drug's appropriate dose and facilitating its full metabolism within the body. Transdermal delivery of very large ionic and hydrophilic molecules is made possible by the microneedle array. Studies on the effectiveness of microneedles have been conducted extensively. Soon, the market for commercial microneedle-based goods will grow, and they may eventually have a major impact on clinical medicine. This article provides an overview of microneedles, discussing their history, many varieties, current state, potential applications, and recent technological developments.

Penetration Enhancement Strategies for Intradermal Delivery of Cromolyn Sodium.

This study aimed to explore the use of chemical and physical enhancement strategies for the intradermal delivery of cromolyn sodium (CS) for treatment of atopic dermatitis. CS gels were formulated to individually contain 2.5 and 9% salcaprozate sodium (SNAC) as a potential chemical enhancer. The effect of microneedles, alone and in combination with SNAC, was investigated via in vitro permeation studies. Skin impedance and FTIR evaluation of SNAC-treated stratum corneum (SC) was done and compared to the control. The amount of drug delivered in the dermis after 24h by the 2.5% and 9% SNAC gels was 23.29 ± 1.89µg/cm2 and 35.87 ± 2.23µg/cm2, respectively, which were significantly higher than the control (p < 0.05) but were not remarkably different from each other (p > 0.05). Microneedles enhanced permeation in both the control and 2.5% SNAC groups (p < 0.05); however, no synergistic enhancement was observed when microneedle and SNAC treatments were combined (p > 0.05). Over 24h of treating the SC with 2.5% SNAC, FTIR evaluation showed stretches on the CH2 asymmetric and symmetric stretching vibrations observed at 2920.23cm-1 and 2850.79cm-1 respectively in untreated SC, which shifted to higher wavenumbers and indicated some lipid fluidizing effect. However, no significant drop in skin impedance was seen with SNAC as compared to the control (p > 0.05). SNAC was concluded to have skin permeation enhancement effect on CS, while microneedles effectively enhanced CS permeation even in the absence of SNAC.

A histopathological and clinical assessment on the effect of microneedling on the autologous platelet-rich plasma in the experimental wound healing model Running Title: Assessment on effect of microneedling on PRP in the wound

A histopathological and clinical assessment on the effect of microneedling on the autologous platelet-rich plasma in the experimental wound healing model Running Title: Assessment on effect of microneedling on PRP in the wound

SKIN MICRONEEDLING PLUS SPOT TRICHLOROACETIC ACID PEEL IN THE TREATMENT OF ATROPHIC POST ACNE SCARS: COMPARATIVE SPLIT FACE STUDY

Background: Post Acne scarring is an unfortunate and frequent complication of acne vulgaris that results in many psychological and emotional problems for patients and the families. Acne scarring may be either atrophic or hypertrophic. Atrophic acne scars are further subdivided morphologically into boxcar, icepick, or rolling scars. Objective: To compare between the effect of microneedling using dermapen and microneedling plus medium depth chemical peeling using T.C.A 30% in post acne atrophic scars. Patients and methods: This study was carried out on 30 patients with different clinical variants of atrophic post acne scars diagnosed clinically on the basis of typical appearance of skin lesions. Patients were recruited from Dermatology Department outpatient clinic in Al-Azhar University hospitals from April 2019 to December 2019. Their ages ranged from 18: 30 years. Assessment of scars in both sides of face was done for their type, number, depth (severity) before and after each session and when the follow up period became completed (2 weeks after the last session). Digital Facial photographs for right and left sides of the face were obtained before treatment, during each session, and when the follow up period became completed (2 weeks after the last session). Results: Most of the patients (60%) achieved marked improvement, 30% achieved good improvement and 10% achieved excellent improvement on the left side of the face, while on the right side of the face most of patients (73.3%) achieved good response and 26.7 % achieved poor response. The mean percentage of improvement of the left side was 55.5 %, while the percentage of improvement of the right side was 33%. Conclusion: Automated microneedling (Dermapen) and T.C.A 30% chemical peel were minimally invasive simple, cheap and effective techniques in the treatment of post acne atrophic scars and improved skin homogeneity and texture. Microneedling plus spot T.C.A 30% have the advantage of rapid healing, short down time, eliminating most of risks and negative side-effects of laser resurfacing or cross technique. The treatment can be performed in an office setting and did not need any extensive special training or expensive instruments and can be used for rejuvenation of the skin, remodeling of the scar. Combination of automated microneedling with other modalities as spot T.C.A 30% for the treatment of post acne atrophic scars gave better results than the use of single modality of treatment as microneedling alone.

The Permeability of Poly(lactic-co-glycolic acid) Nanoparticles Loaded with Psoralen to Human Skin in Medical Chemotherapy

Objective: In order to improve the clinical efficacy and reduce the side effects, PLGA nanoparticles loaded with psoralen for external use were prepared, and the permeation, distribution and influencing factors of PLGA nanoparticles delivered via microneedles in human skin were investigated. Methods: The psoralen nanoparticles were prepared by solvent replacement and interfacial polymer deposition. The percutaneous process of PLGA nanoparticles loaded with psoralen was observed with Franz diffusion cell and laser confocal microscope. The distribution of the nanoparticles in each cortex was quantified by HPLC. Results: The retention of PLGA nanoparticles delivered via microneedles in the skin was significantly increased (P &lt; 0.01), and the retention in the epidermis was greater than that in the dermis (P &lt; 0.01); the release rate in vitro was 75.58% after 24 hours, and less than 0.5% after 48 hours. Conclusion: PLGA nanoparticles loaded with psoralen can effectively promote the penetration and distribution of PLGA nanoparticles in human skin after being delivered to human skin through microneedles. With the increase of depth, the amount of PLGA nanoparticles gradually decreases, and with the extension of time, the penetration promotion effect of microneedles is more obvious. PLGA nanoparticles loaded with psoralen may become one of the clinical methods to improve the photochemotherapy of psoralen and develop a new transdermal drug delivery system to reduce its toxic and side effects.

Comparison between the therapeutic effect of microneedling versus tretinoin in patients with comedonal acne: a randomized clinical trial

Background: Microneedling has been shown to be a clinically effective and safe treatment for comedonal acne vulgaris. The aim of the present study was to compare the clinical effectof microneedling and the most commonly used topical drug, tretinoin, in the treatment of comedonal acne.Methods: Patients with comedonal acne (n = 82) were randomized to receive topical tretinoin (n = 41) or 6 sessions of microneedling (n = 41) over a period of 3 months. Objective assessments suchas changes in acne severity score by global acne grading system (GAGS) and patients’ subjective satisfaction were investigated at the baseline, at the end of the treatment period, and at the3-month follow up.Results: GAGS was significantly reduced in both microneedling (7.8±3.8 to 3.5±2.6) and tretinoin (8±3.8 to 6.6±3.2) groups at the end of the treatment course compared with the baseline. Theoverall acne severity index reduction in microneedling group was significantly higher than that of the tretinoin group (P<0.001). Improvement in acne severity was also more permanent bymicroneedling. The severity of acne in tretinoin recipients was increased to 8.2±3.2 at the follow-up visit, while it remained nearly unchanged in the microneedling group. (3.3±2.4). Patients’subjective assessment concerning acne improvement was significantly more satisfactory in microneedling group (P<0.001). Conclusion: Compared with tretinoin, microneedling seems to be a more effective, permanent and satisfactory treatment in the treatment of comedonal acne.

The effect of microneedling on scars resulting from induced cutaneous injuries in rats

The effect of microneedling on scars resulting from induced cutaneous injuries in rats

Synergic effect of microneedle and iontophoresis on transdermal delivery of human growth hormone

Synergic effect of microneedle and iontophoresis on transdermal delivery of human growth hormone

Split face comparative study for efficacy of microneedling alone versus microneedling combined with vitamin c in treating facial acne scars

Background: Microneedling a newer treatment modality for facial acne scars induces collagen production through mechanical stimulation of the dermis and leads to the softening of scars, realignment of collagen bundles and stimulation of new collagen. Topical vitamin C have beneficial effect on acne and improves acne scarring when used in conjunction with glycolic acid peels and post-laser resurfacing. Aims: Split face comparative assessment of the efficacy of microneedling therapy versus microneedling therapy in conjunction with topical vitamin C in facial acne scars. Materials and Methods: This study was performed on 50 patients having facial acne scars after taking informed written consent. The face was divided into right and left half from midline. On the half of face only microneedling and on other side of face microneedling therapy with topical vitamin C (5% L-ascorbic acid) has been used. A total of three session at 4 weeks interval was done in each patient. Facial scars was assessed clinically to grade the severity of scarring, as per the ECCA grading system. Results: Gradual improvement in global score & acne scar types after each sitting of Microneedling as well as Microneedling + Topical Vitamin-C observed. Overall mean percentage improvement with Microneedling + Topical Vitamin-C was more than the mean percentage improvement with Microneedling alone. Conclusion: Microneedling shows significant clinical improvement in the M type scars (rolling), and U type scars (boxcar) and modest improvement in V type scars (ice-pick). Effect of microneedling is enhanced by combining the procedure with application of topical vitamin C.

The effect of microneedles on the skin permeability and antitumor activity of topical 5-fluorouracil

Topical 5-fluorouracil (5-FU) is approved for the treatment of superficial basal cell carcinoma and actinic keratosis. However, 5-FU suffers from poor skin permeation. Microneedles have been successfully applied to improve the skin permeability of small and large molecules, and even nanoparticles, by creating micron-sized pores in the stratum corneum layer of the skin. In this report, the feasibility of using microneedles to increase the skin permeability of 5-FU was tested. Using full thickness mouse skin mounted on Franz diffusion apparatus, it was shown that the flux of 5-FU through the skin was increased by up to 4.5-fold when the skin was pretreated with microneedles (500μm in length, 50μm in base diameter). In a mouse model with B16-F10 mouse melanoma cells implanted in the subcutaneous space, the antitumor activity of a commercially available 5-FU topical cream (5%) was significantly enhanced when the cream was applied on a skin area that was pretreated with microneedles, as compared to when the cream was simply applied on a skin area, underneath which the tumor cells were implanted, and without pretreatment of the skin with microneedles. Fluorouracil is not approved for melanoma therapy, but the clinical efficacy of topical 5-FU against tumors such as basal cell carcinoma may be improved by integrating microneedle technology into the therapy.

The Effect of Microneedling with a Roller Device on the Viability of Random Skin Flaps in Rats

In a random pattern skin flap, distal flap necrosis occurs as a result of inadequate blood flow. Microneedling with a handheld roller device is a new treatment modality, especially for facial rejuvenation. In this study, the authors used microneedling to increase flap viability. Forty adult male Sprague-Dawley rats were divided into two groups of 20. The study group was exposed to McFarlane flap elevation and repositioning. The microneedling procedure was performed four times: 3 days before, on the day of, and on the third and sixth days after surgery. The control group was only exposed to surgery. The skin flap necrosis area was measured on the seventh postoperative day topographically by digital imaging and scintigraphy. After determination of necrosis area, the amount of neovascularization and number of vascular structures within the papillary dermal layer were counted histopathologically. The mean percentages of necrosis in the flap area as determined by the Digimizer analysis program were 37.51 ± 5.08 in the control group and 29.42 ± 7.37 in the study group. The mean percentages of flap necrosis of the control group and the study group as determined by radionuclide scintigraphy were 31.4 ± 4.1 and 22.8 ± 5.0, respectively. The comparison of flap necrosis percentages showed that the study group had significantly lower values (p < 0.001). Vessel counts in the study group also showed significant increase (p < 0.05). The authors' study showed that the microneedling method applied directly on the flap could be a faster, safer, and more effective therapy modality to increase flap viability.

Effect of microneedle on the pharmacokinetics of ketoprofen from its transdermal formulations

Non-invasive transdermal delivery using microneedle arrays was recently introduced to deliver a variety of large and hydrophilic compounds into the skin, including proteins and DNA. In this study, a microneedle array was applied to the delivery of a hydrophobic drug, ketoprofen, to determine if transdermal delivery in rats can be improved without the need for permeation enhancers. The ability of a microneedle to increase the skin permeability of ketoprofen was tested using the following procedure. A microneedle array was inserted into the lower back skin of a rat using a clip for 10 min. Subsequently, 24 mg/kg of a ketoprofen gel was loaded on the same site where the microneedle had been applied. Simultaneously, the microneedle was coated with 24 mg/kg of a ketoprofen gel, and inserted into the skin using a clip for 10 min. As a negative control experiment, only 24 mg/kg of the ketoprofen gel was applied to the shaved lower back of a rat. Blood samples were taken at the indicated times. The plasma concentration (Cp) was obtained as a function of time (t), and the pharmacokinetic parameters were calculated using the BE program. The group loaded with the microneedle coated with ketoprofen gel showed a 1.86-fold and 2.86-fold increase in the AUC and Cmax compared with the ketoprofen gel alone group. These results suggest that a microneedle can be an ideal tool for transdermal delivery products.