Evaluation of the Efficacy and Safety of Polylevolactic Acid Injection Filling Combined With 1565nm Non-ablative Fractional Laser in the Treatment of Striae Distensae
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- The treatment effect is judged by color, area, concavity and convexity, and skin elasticity
研究概览
简要总结
- Striae distensae (SD), also known as stretch marks, are common, permanent dermal lesions that can be symptomatic and are considered aesthetically undesirable; thus, they pose a significant psychosocial and therapeutic challenge. SD arise in areas of dermal stretching and most commonly occur on the abdomen, breasts, buttocks, and thighs. Most literature has described SD during pregnancy(striae gravidarum) and puberty, with reported prevalences varying from 11% to 88%. Hormonal influences, reduced genetic expression of fibronectin, collagen, and elastin, and mechanical stretching of the skin have all been postulated to contribute to SD formation. In the acute phase, SD appear as red/violaceous lesions (striae rubrae; SR) that can be raised and symptomatic. The chronic form (striae albae; SA) exists as hypopigmented dermal depressions.
- Polylevolactic Acid(PLLA) is at present one of the most promising biodegradable polymers (biopolymers) and has been the subject of abundant literature over the last decade. PLLA can be processed with a large number of techniques and is commercially available (large-scale production) in a wide range of grades.
- Previous studies have found that 1565-nm laser can promote the synthesis of types I, III, and VII collagen and elastin, as well as the remodeling of dermal collagen. According to previous studies, dermal collagen deposition and remodeling may be related to the mechanism by which 1565-nm laser improves SD.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age: 18-50 years old, regardless of gender;
- •The clinical diagnosis was atrophic stria;
- •Patients with normal blood routine, liver and kidney function, and preoperative infection;
- •Able to communicate well with researchers and comply with the overall test requirements;
- •Willing to take and retain photos before and after treatment;
- •Volunteer and sign an informed consent form.
排除标准
- •Scar constitution;
- •Acute or chronic skin infections (including bacteria, viruses, and fungi) exist near the treatment area;
- •Those who are allergic to any component of the product;
- •Those who have been injected with anticoagulant drugs;
- •Those who have used other drugs, other substances, and other implant agents;
- •Patients with severe primary and psychiatric disorders such as heart, brain, liver, kidney, hematopoietic system, endocrine system, etc;
- •History of peripheral vascular disease, long-term alcoholism, diabetes, immunosuppression, disorder, drug abuse, etc;
- •Pregnant and lactating women;
- •Those who are critically ill and difficult to accurately evaluate the effectiveness and safety of the product.
结局指标
主要结局
The treatment effect is judged by color, area, concavity and convexity, and skin elasticity
时间窗: 4months
* Color: Ranked in order as follows: Purple red pink skin color, no change 0 point, 1 point added for each shade subtracted; * Area: 0 point: no change, 1 point: slightly improved, 2 points: significantly improved, 3 points: basically invisible; * Bump sensation: 0 point: no change, 1 point: slightly improved, 2 points: significantly improved, 3 points: bump basically eliminated; * Skin elasticity: 0 point: no change, 1 point: slightly improved, 2 points: significantly improved, 3 points: very satisfied; The total score of 6-12 points is basically cured; A total score of 3-5 points is significant; Effective with a total score of 1-2; A total score ≤ 1 is invalid. Total effective rate of treatment=(basically cured+significantly effective+effective)/total number of cases × 100%. Higher scores mean a better outcome.
次要结局
未报告次要终点