BACKGROUND: Striae distensae (SD), linear scars of derma, caused by disproportionate skin stretching, which indicates a cosmetic problem and even endangers individuals\' psychosocial health. Microneedling, representing a relatively new procedural therapy, has shown brightening but diverse results in the remedy of SD. Our study systematically investigates and further evaluates the efficacy of microneedling for SD.
METHODS: This study was conducted following the PRISMA guidelines. According to the preplanned search strategy, four electronic databases were comprehensively searched for eligible clinical controlled studies. Standardized mean difference (SMD) and odd ratio (OR) with 95% confidence intervals were calculated for continuous data and dichotomous data, respectively.
RESULTS: According to the predetermined criteria, eleven eligible articles of six RCTs and five non-RCTs were included. Concerning clinical improvement, a significant difference was observed in the microneedle radiofrequency treatment subgroup (SMD: 0.57, 95% CI 0.20-0.94, P = 0.003). The pooled result of the second subgroup revealed that microneedling and lasers producing almost comparable effectiveness for treating SD with no significant difference (P = 0.35). The analysis result of the third subgroup of microneedling versus non-laser therapy indicated significant difference at the 5% significance level (SMD:1.01, 95% CI 0.51-1.51, P < 0.0001). With regard to patient satisfaction, the pooled estimate concluded that participants\' satisfaction with therapeutic effect between MRF and laser group was comparable (P = 0.26), whereas microneedling exhibited significant superiority than both laser (P = 0.04) and non-laser treatments (SMD: 0.95, 95% CI 0.52-1.38, P < 0.0001). Occurrence of post-inflammatory hyperpigmentation (PIH) was not obvious in microneedling therapy compared to other treatments, and a statistically difference was observed (P = 0.0003). Microneedling treatment caused significant pain compared with laser therapy (P < 0.00001).
CONCLUSIONS: This systematic review and meta-analysis has provided initial evidence of the efficacy and safety of microneedling technology for SD.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

BACKGROUND: Striae distensae (SD) is a challenging cosmetic condition. Ablative fractional laser (AFL) is an effective method for treating SD. Recently, fractional radiofrequency (FRF) has been shown to be a promising treatment for SD; however, few studies have shown the differences between FRF and AFL in the treatment of SD.
OBJECTIVE: This study aimed to evaluate and compare the clinical efficacy and safety of bipolar FRF with 2940-nm erbium yttrium aluminum garnet (Er:YAG) AFL in the treatment of SD.
METHODS: Twenty volunteers with abdominal SD were enrolled in this study. One half of the abdomen was treated with 2940-nm Er:YAG AFL, whereas the other half was treated with bipolar FRF, with three sessions at 4-week intervals. Photographic evaluations of clinical improvement were conducted by two independent investigators before and after treatment, and the patients provided self-assessments. Two participants underwent three punch biopsies, one before treatment and two obtained from bilateral representative skin lesions on the abdomen 3 months following the final treatment.
RESULTS: Clinical improvements were observed in SD on both sides of the abdomen after the two treatments. Post-treatment skin biopsies revealed increased thickness in the epidermis and dermis, and higher collagen and elastin density compared to those at the baseline. No statistically significant differences were observed in the clinical outcomes between the two treatment approaches.
CONCLUSIONS: The efficacy and safety of bipolar FRF treatment are comparable to those of 2940-nm Er:YAG AFL treatment, providing an alternative and effective treatment for SD.

BACKGROUND: Striae Distensae (SD) is a common dermatological lesion. The mechanism of formation is unclear, the prevailing theory is mechanical pulling of the skin and hormonal changes. Traditional SD treatment methods include topical drugs, photoelectric therapy, stripping and others, but each has limitations. Stromal vascular fraction gel (SVF-gel) is a filler physically prepared from granular fat, enriched with adipose-derived stem cells (ADSCs) and extracellular matrix (ECM). A good effect in the treatment of neck lines, wounds, acne, and other aspects. SD formation and treatment goals are comparable to those of neck lines. In this study, SVF-gel filling will be used to treat mature SD, and its effectiveness and safety will be discussed in detail.
METHODS: From December 2019 to June 2022, recruit patients who want to treat SD caused by obesity or pregnancy among those who have \"autologous fat aspiration\" to change their body shape. Preoperatively, the area to be treated for SD was marked, autologous fat aspiration was performed, and the aspirated fat was prepared as SVF-gel and filled into the preoperatively marked SD. All patients had preoperative and postoperative follow-up with planar photographs and VISIA skin analyzer photographs to assess surgical results and safety from subjective and objective perspectives.
RESULTS: A total of 36 patients were enrolled, with 31 of them successfully followed up on. The mean Global Aesthetic Improvement Scale (GAIS) score six months after surgery was 1.87 ± 0.03. At six months postoperatively, the overall patient satisfaction rate was 90%. The depth, area, and color of SD improved six months after surgery, and no serious complications occurred in any of the patients.
CONCLUSIONS: SVF-gel is a safe and effective method of improving mature SD and can be used as a clinical treatment option.

暂无摘要。

Striae distensae (stretch marks/striae gravidarum) is one of the common cosmetic problems that can cause psychological distress and anxiety to patients due to its disfiguring damage, especially for women. The etiology of striae distensae is currently unknown, and risk factors include low maternal age, family history of stretch marks, excessive weight gain during pregnancy, and high neonatal weight. This article reviews the latest literature on the most commonly used, most popular, and novel treatment modalities and analyzes the hot spots and difficulties in striae distensae treatment in recent years. Topical treatment modalities are mainly used as an adjunctive treatment. Ablative lasers and non-ablative lasers are the most popular, among which picosecond has been tried in striae distensae treatment in the last two years. Combined treatment modalities are currently a hot spot for SD treatment, and microneedle radiofrequency and fractional CO2 laser combined with other treatments are the most common. Microneedle radiofrequency is the most commonly used and achieved therapeutic effect among the combined treatment modalities.

暂无摘要。

Striae gravidarum is a common dermatologic condition for females caused by multiple factors during pregnancy. It remains a therapeutic challenge especially in the striae alba (SA) stage, generating psychological and emotional distress to those affected. This study aims to compare the efficacy and safety of 1565-nm non-ablative fractional laser (NAFL) and fractional microneedle radiofrequency (MRF) for treatment of SA striae gravidarum. Fourteen Chinese women with SA striae gravidarum were included in this study. Patient abdomens were randomly divided into NAFL and MRF treatment sides, treated three times at 6-week intervals. Treatment efficacy was evaluated by subjective (clinical assessments, patient satisfaction rating, adverse effects assessment) assessments and objective (skin melanin index measurement, histological study) assessments. Clinical assessment suggested MRF was more effective (P = 0.0143) for improving the appearance of SA striae gravidarum. Both NAFL and MRF demonstrated effective improvement (P = 0.0082 and P = 0.0158, respectively), with no significant difference according to patient satisfaction ratings and changes in melanin index (P = 0.5900). Both treatments induced limited adverse reactions, but MRF treatment caused significant pain compared with the more moderate NAFL treatment (P = 0.0003). MRF treatment increased neocollagen and elastic fibers more significantly than NAFL, based on histological assessments (P = 0.0298 and P = 0.0048, respectively). MRF treatment improved collagen regeneration in SA striae gravidarum more than NAFL but caused considerable pain during treatment. Corresponding treatment or therapeutic strategies should be applied according to clinical scenario.

The term striae gravidarum (SG) refers to a kind of striae distensae (SD) that develops particularly during pregnancy. According to the level of maturity of the lesions, SG is divided into striae rubra (SR) and striae alba (SA). The pathogenesis remains unclear; recent studies have implicated abnormalities in elastic fibers, collagen fibrils, and other extracellular matrix (ECM) components. Changes in the expression of hormone receptors and hormone levels have also been hypothesized. Considering this new information, we reviewed successful treatments of SG and listed them in two tables. Our review found that topical treatments were relatively weak compared with laser and light treatment, with which the appearance of SR and SA can be significantly improved. Lasers combined with other modalities, such as additional energy devices and topical agents, were also proven effective, but more large-scale trials are necessary.

BACKGROUND: Striae distensae (SD) are common and aesthetically undesirable dermal lesions. The aim of this study is to comprehensively evaluate the effectiveness of different therapies in treating striae distensae using network meta-analysis.
METHODS: A systematic search of electronic databases up to December 1, 2019 was conducted. Randomized controlled trails (RCTs) examining the effectiveness of different methods in treating striae distensae were included. The primary outcomes are clinical effective rate and patient\'s satisfaction degree. Risk of bias was assessed by the Cochrane risk of bias tool. Network meta-analysis was based on Bayesian framework.
RESULTS: Fourteen trails that met the criteria with 651 subjects were included. The results of the network meta-analysis show that topical tretinoin combined bipolar radiofrequency showed the highest probability of being the best method to improve the clinical effectiveness and patient satisfaction rate of treating SD (84.5% and 95.7% respectively), closely followed by bipolar radiofrequency (75.3% and 84.3% respectively). Among laser treatment, CO2 fractional laser is superior to other lasers in the clinical effectiveness and patient satisfaction (72.0% and 58.1% respectively). Statistics showed the topical tretinoin was the worst-performing option in improving the clinical effectiveness and patient satisfaction rate of SD treatment (5.4% and 5.1% respectively).
CONCLUSIONS: Based on the results of network meta-analysis, we recommend treating striae distensae with bipolar radio frequency combined topical tretinoin. The commonly used CO2 fractional laser can be considered as alternative treatment candidate. Additional large-scale RCTs are necessary to obtain more precise estimates of their relative efficacy.

BACKGROUND: Striae distensae (SD) has a known psychological impact due to the resulting cosmetic disfigurement. Many treatment modalities have been used over the years, but no standard interventions or evaluation methods have been proposed to date.
OBJECTIVE: We compared the efficacy and safety of non-insulated microneedle radiofrequency (NIMRF) and fractional CO2 laser treatments of SD by objective measurements with dermoscopy and VISIA.
METHODS: Fourteen females with severe SD were enrolled. These subjects had been treated three sessions of NIMRF and fractional CO2 laser for the right and left abdomen, respectively. Dermoscopy and VISIA imaging data, and photographs were collected at baseline and 2 months after the last treatment session. The global aesthetic improvement scale (GIAS) was scored by patients, and blinded investigators, pain score and satisfaction score were also documented. Any side effects were recorded.
RESULTS: Ten patients completed the study. The GIAS from investigators and patients showed an overall improvement but without a significant difference (P = 0.18, P = 0.17, respectively). The decreased width measured by dermoscopy was between 5% and 32% (right side) and 6-31% (left side). There was no significant difference between both sides in either the per-protocol or intention to treat analyses (P = 0.149, P = 0.161, respectively). The mean pain score was 5.35 and 2.35 on the right side and left side, respectively, which was significant (P = 0.0016). Post-inflammatory hyperpigmentation (PIH) manifested in six patients on their left sides and four patients on their right sides. In most cases, this had resolved by the 3-month follow-up.
CONCLUSIONS: Non-insulated microneedle radiofrequency and fractional CO2 laser are both effective and safe treatment options for SD. PIH is a possible side effect but is more likely with fractional CO2 laser treatment. However, it clears up in most cases. Dermoscopy and VISIA are both convenient, digitalized methods of tracking subtle changes and monitoring the efficacy of SD treatments.