CO2点阵激光联合萘替芬酮康唑乳膏治疗甲真菌病疗效评价

目的：评价CO₂点阵激光联合萘替芬酮康唑乳膏外用治疗甲真菌病的临床疗效。方法：对2017年1月至2018年8月我科门诊甲真菌病患者患甲进行CO₂点阵激光照射（2周1次）,每日外涂萘替芬酮康唑乳膏治疗,共治疗16周。观察临床疗效、真菌学检查结果及不良反应发生情况。结果：共治疗35例患者,35个靶甲,其中指甲5个,趾甲30个;白色浅表型8个,远端侧位甲下型18个,近端甲下型9个。在第4次治疗后有效率为54.29%,真菌清除率为74.29%;疗程结束3个月后有效率为82.89%,真菌清除率为88.57%。结论：CO₂点阵激光联合萘替芬酮康唑乳膏治疗甲真菌病安全有效。     

超脉冲CO_2点阵激光联合外用药治疗顽固性白癜风的疗效评价

目的:评价超脉冲CO_2点阵激光联合外用药膏治疗顽固性白癜风的临床疗效。方法:将56例顽固性白癜风患者随机分成治疗组29例(皮损52块)和对照组27例(皮损48块),均外用丙酸氟替卡松乳膏及卡泊三醇每日1次,疗程12周。治疗组另给予CO_2点阵激光治疗,1次/3周,共4次。12周后评价疗效。结果:治疗组中有效皮损36块,有效率76.6%;对照组有效皮损18块,有效率42.9%,差异有显著性(P0.01)。结论:点阵激光联合外用药物治疗白癜风比单用药物疗效明显。     

点阵CO2激光治疗原发性皮肤淀粉样变病疗效评价

目的：评价点阵CO₂激光治疗原发性皮肤淀粉样变病的疗效。方法：采用点阵CO₂激光治疗躯干及四肢原发性皮肤淀粉样变病，60～80 mJ/脉冲,每4周1次，共治疗3次。根据皮损大小、色素沉着及瘙痒对皮损进行评分。结果：共收集2017年12月至2018年12月10例患者，其中苔藓样淀粉样变性4例，斑状淀粉样变性6例。皮损大小、色素沉着及瘙痒由治疗前的36分，35分，38分下降至9分,12分，4分。三次治疗后的总有效率为100%，显效率为90%。未出现严重不良反应。结论：点阵CO₂激光治疗原发性皮肤淀粉样变病安全有效。     

Fractional CO2 laser for the treatment of acne scars

Background Numerous reports have been published on skin rejuvenation by the so‐called fractional laser device that delivers a laser beam in a dot form over a grid pattern. Aims In this study, we characterized the effects of a fractional CO₂ laser on atrophic acne scars at the clinical and ultrastructural levels. Methods Seven healthy adult Japanese volunteers (aged 32–46 years, mean 37.6, five men and two women of Fitzpatrick skin type III) were recruited for this study. A fractional CO₂ laser device, SmartXide DOT (DEKA, Florence, Italy), was used with irradiation parameters set as follows: output power 10 W, pulse width 600 μs, dot spacing 800 μm, and stack 2 (irradiation output power 0.91 J/cm²). A clinical examination and punch biopsy of each subject was performed before and just after the irradiation, and also at week 3 after three irradiation sessions. The biopsy specimens were stained with toluidine blue and were examined ultrastructurally. Results Clinical improvement of the atrophic acne scars was observed at week 3 after the third irradiation session in all cases compared with the condition before treatment. Histologically, outgrowths of many degenerated elastic fibers were observed as irregular rod‐shaped masses in the superficial dermis prior to the treatment in the region of the acne scars. At week 3 after the third irradiation, the degenerated elastic fibers were no longer observed, and the elastic fibers were elaunin‐like. Conclusions The fractional CO₂ laser is considered to be very effective for treating atrophic acne scars.     

Fractional carbon dioxide laser versus combined fractional CO2 laser and platelet rich plasma in treatment of facial wrinkles: A comparative split face study

Background

Wrinkles are the most visible sign in skin aging and for which many people seek different aesthetic procedures. Treatment options varies from invasive to non-invasive procedures. Combining platelet rich plasma and fractional carbon dioxide laser (CO₂) has been used frequently for showing promising results in treating photoaged skin generally and wrinkles specifically since the microscopic thermal zones created by the fractional laser facilitates the delivery of the plasma into the dermis which aids the process of collagen induction and skin rejuvenation.

Aim of the work

To compare and assess the clinical efficacy of fractional CO₂ laser alone versus combined fractional CO₂ laser and platelet rich plasma in treatment of facial rhytides (in terms of size, depth, and overall appearance).

Subjects and Methods

Twenty-six female patients were selected and each face was split into 2 halves a control side (Laser + saline) and an experimental side (Laser + platelet rich plasma). Treatment plan was 1 laser session per month for a total of 4 sessions. Clinical objective evaluation was done by the Antera camera in addition to assessment by two blinded dermatologists.

Results

The combined treatment was as effective in improving wrinkles as fractional CO₂ laser alone. Antera camera scores showed statistical significance in overall wrinkles measurements on each side equally.

Conclusion

Both treatment modalities gave optimum cosmetic results with no significant difference noticed when compared with each other, although overall satisfaction with wrinkles and skin were statistically greater than the initial satisfaction scores.     

点阵CO_2激光联合液氮冷冻治疗鸡眼疗效评价

目的:评价点阵CO_2激光联合液氮冷冻治疗鸡眼的临床疗效。方法:85例鸡眼患者随机分为两组:治疗组43例,给予点阵CO_2激光联合液氮冷冻治疗;对照组42例,单用液氮冷冻治疗,10日1次,共治疗3次。结果:治疗组与对照组痊愈率分别为90.70%和52.38%,有统计学意义(P0.01);治疗组与对照组复发率分别为2.56%和9.09%,无统计学意义(P0.05)。结论:点阵CO_2激光联合液氮冷冻治疗鸡眼安全有效。     

超脉冲CO2激光联合布替萘芬软膏治疗甲真菌病的自身对照研究

目的：评价超脉冲CO2激光联合布替萘芬软膏治疗甲真菌病的疗效和安全性。方法：从同一甲真菌病患者中随机挑选一个或多个病甲分别作为治疗组和对照组,治疗组采用超脉冲CO2激光联合布替萘芬软膏外用治疗,激光每周治疗一次,4次后,每4周一次,布替萘芬软膏每日2次,指甲治疗12～16周,趾甲治疗20～24周。对照组仅外用布替萘芬软膏。结果：共治疗19例甲真菌病患者131个病甲,其中治疗组为66个病甲,对照组为65个病甲。治疗组有效率为51.52%高于对照组的18.46%,两者差异有显著性(P＜0.05);治疗组真菌镜检阴性率为66.67%高于对照组的26.15%,差异有显著性(P＜0.05)。结论：超脉冲CO2激光联合布替萘芬软膏治疗甲真菌病优于单用布替萘芬软膏。     

CO2点阵激光联合308 nm准分子激光治疗白癜风疗效和安全性meta分析

目的：评价CO₂点阵激光联合308 nm准分子激光治疗白癜风的临床疗效和安全性。方法：通过检索Cochrane Library、PubMed、Embase、万方、中国知网、维普数据库,收集CO₂点阵激光与308 nm准分子激光联合治疗白癜风相关的文献,运用软件（Revman 5.3）进行Meta分析。结果：13篇临床随机对照实验被纳入,其中1014处皮损给予CO₂点阵激光与308 nm准分子激光联合治疗,1005处皮损给予308 nm准分子激光单独治疗。结果显示：联合疗法总有效率和显效率优于单用308 nm准分子激光;两组不良反应发生率无明显差异。结论： CO₂点阵激光+308 nm准分子激光联合治疗白癜风的疗效优于单独使用308 nm准分子激光,且两种疗法的不良反应没有明显差异。     

Comparison of the efficacy of carboxytherapy versus fractional CO2 laser therapy for the treatment of periorbital dark circles: A randomized clinical trial

Background

Periorbital dark circles (PDC) is one of the most common cosmetic issues in today's society. Only moderate degree of improvement has been achieved by various available treatment options. The present study aimed to compare the clinical efficacy of carboxytherapy and fractional CO₂ laser therapy in the management of PDC.

Methods

In this split face study, 30 patients with bilateral PDC aged between 23 and 52 years were recruited who underwent carboxytherapy (n = 30) on PDC of one side of the face and fractional CO₂ laser therapy (n = 30) on the PDC of other side. The entire treatment comprised of four sessions of each therapy with an interval of 2 weeks each time. The assessment was based on both subjective methods (patients' satisfaction and physician's judgment) and objective method (based on digital standard photographs). The degree of improvement from the patient's point of view (patient satisfaction) and physician's point of view (physician satisfaction) was assessed in different therapy sessions in comparison with the improvement after first session.

Results

The study included 30 patients with mean age of 38.22 ± 8.3 years. The mean disease duration was 45 ± 12.3 months. After the second therapy session, patients' satisfaction was remarkably better in the fractional CO₂ laser therapy group than the carboxytherapy group, over the time. According to the physician satisfaction, the improvement rate was higher after the second and sixth weeks in the fractional CO₂ laser therapy group than the carboxytherapy group; whereas in other sessions, there were no statistically significant differences. There were no significant side effects observed in either group post-treatment each time.

Conclusion

Fractional CO₂ laser therapy is a better option to treat PDC than carboxytherapy. Also, mild side effects (including erythema, pain, and discomfort) were reported in both groups; with no significant difference between the groups.     

Fractional CO2 laser: a novel therapeutic device for refractory necrobiosis lipoidica

Necrobiosis lipoidica diabeticorum is a granulomatous skin disease of uncertain pathogenesis. Many therapeutic approaches have been reported in the literature, but none of them can be considered the gold standard. Fractional CO₂ laser treatment shows peculiar effects in the skin, mainly due to its ability of modulating cytokine pathways of tissue‐repairing mechanisms. Thus, we propose fractional CO₂ laser in the management of refractory necrobiosis lipoidica in selected recalcitrant patients.     

Effects of CO2 fractional laser therapy on peripheral blood cytokines in patients with vitiligo

Vitiligo is a disease pathologically characterized by specific damage to melanocytes. The aim of this study was to explore the mechanism underlying CO2 fractional laser treatment of vitiligo by detecting the levels of Th1 cytokines (IL‐2 and IFN‐γ), Th2 cytokines (IL‐4 and IL‐10), and Th17 cytokines (IL‐17 and IL‐23) in peripheral blood. Twenty five vitiligo patients were enrolled in this study and were treated with a CO2 fractional laser four to eight times. The cytokines of 25 vitiligo patients and 20 healthy volunteers were measured by enzyme‐linked immunosorbent assay. After CO2 fractional laser therapy, six cases were cured, and the apparent efficiency was 72.0% (18/25), while the efficiency was 92.0% (23/25). Before CO2 fractional laser therapy, IL‐2 and IFN‐γ levels in vitiligo patients were higher than those in the control group, but the difference was not statistically significant (p > .05). IL‐4, IL‐10, IL‐17, and IL‐23 levels were also higher in vitiligo patients than those in the control group (p < .05). After treatment, IL‐2 and IFN‐γ levels in vitiligo patients were lower than before treatment, but the difference was not statistically significant (p > .05), while IL‐4, IL‐10, IL‐17, and IL‐23 levels were significantly lower compared with before treatment (p < .05). The results show that CO2 fractional laser treatment has a good curative effect in the treatment of vitiligo.     

Skin tightening induced by fractional CO(2) laser treatment: Quantified assessment of variations in mechanical properties of the skin

Background Certain authors have reported the efficacy of fractional resurfacing laser treatment in patients with photodamaged skin resulting in skin tightening of treated area. Objective To assess skin tightening after CO₂ fractional resurfacing laser treatment by measuring variations in mechanical properties in treated areas. Dermal elasticity was measured using suction applied with an in vivo skin elasticity meter (Cutometer^®). Methods A prospective observational study was undertaken from January 2007 to August 2009. Laser treatment was performed with the SmartXide Dot^® (Deka^®, Firenze, Italy) CO₂ fractional resurfacing device. Patients were offered quantified analysis using the Cutometer^® before and after treatment. Results Seventeen patients (61 areas treated) were included in the study. Median delay between before and after cutometric evaluations was 80 days. We found significant improvement in elastic (R2 +5.9%), viscoelastic (R8 ?9.4%), fatigue (R3 and R9 ?16.2% and ?19.7%, respectively), and thickness (R0 ?14.9%) parameters. These results are consistent with significant tightening and also elastic tissue improvement. Conclusions It was possible to quantify skin tightening because of CO₂ fractional laser treatment using a noninvasive technique.     

The efficacy of fractional carbon dioxide (CO2) laser combined with terbinafine hydrochloride 1% cream for the treatment of onychomycosis

Background: Although systemic and topical antifungal agents are widely used to treat onychomycosis, oral medications can cause adverse effects and the efficacy of topical agents is not satisfying. Currently, laser treatment has been studied for its efficacy in the treatment of onychomycosis. Our study was aimed to evaluate the efficacy of fractional carbon dioxide (CO₂) laser treatment combined with terbinafine cream for 6 months in the treatment of onychomycosis and to analyze the influencing factors. Methods: A total of 30 participants (124 nails) with clinical and mycological diagnosis of onychomycosis received fractional CO₂ laser treatment at 2-week interval combined with terbinafine cream once daily for 6 months. The clinical efficacy rate (CER) was assessed from the percentage of fully normal-appearing nails or nails with ≤5% abnormal appearance, and the mycological clearance rate (MCR) was assessed from the percentage of nails with negative fungal microscopy. Results: The CER was evaluated at 3 time points: at the end of treatment (58.9%), at 1 month after the last treatment (63.5%), and at 3 months after the last treatment (68.5%). The MCRs at 1 month and 3 months after the last treatment were 77.4 and 74.2%, respectively. The evaluation of influencing factors showed significantly higher CER (p < 0.05) in nails of participants with age <50 years, distal lateral subungual onychomycosis (DLSO), superficial white onychomycosis (SWO), nail thickness <2 mm, affected first-to-fourth finger/toenails, Trichophyton rubrum, and Trichophyton mentagrophytes. All participants experienced tolerable mild burning sensation during laser treatment, but there were no other adverse reactions reported. Conclusions: Fractional CO₂ laser treatment combined with terbinafine cream for 6 months was an effective and safe method for the treatment of onychomycosis. There were 5 factors that positively influenced the treatment outcome: age, clinical type of onychomycosis, nail thickness, involved nail, and species of fungus.     

The efficacy of fractional CO2 laser in acne scar treatment: A meta‐analysis

Fractional CO₂ laser is a good option for treating acne scars. However, the clinical efficacy of this treatment modality requires further evidence. To perform a meta‐analysis to assess clinical improvements in acne scars with fractional CO₂ laser and non‐CO₂ laser therapies. Databases (PubMed, Embase, Cochrane Library) were searched using the search strategy to identify eligible studies. All statistical analyses were performed using the Review Manager 5.0, and a meta‐analysis was conducted to assess the effects of fractional CO₂ laser used as a treatment for acne scars. Eight studies were included for further analysis. There was no significant difference between fractional CO₂ laser and non‐CO₂ laser therapies in terms of clinical improvement, observer assessment (P = .19), patient assessment (P = .91), and incidence of post‐inflammatory hyperpigmentation (P = .69). The subgroup analyses showed that the duration of follow‐up had little effect on the evaluation of treatment effect. The efficacy of fractional CO₂ laser therapy in acne scars appeared to be equal to that of non‐CO₂ laser therapies. More well designed randomized controlled trials and more credible and standard evaluation criteria are needed, and the efficiency of combination therapy requires further analysis.     

Induction of apoptosis by fractional CO2 laser treatment

Abstract

Introduction: Fractional CO₂-laser is considered a preferential method for skin resurfacing, but little is known about the molecular mechanisms underlying this surgical tool. In the present study, we investigated the possible role of apoptosis by the sequential analysis of lesional skin after laser treatment, with special attention to power. Moreover, we have analyzed if there is a correlation with clinical improvement. Materials and methods: We evaluated the effects of fractional CO₂-laser in twelve patients with photodamage skin Fitzpatrick types I to III. Apoptosis markers were assessed by an immunohistochemical study on skin samples of foream at 24 h, 72 h and 7 days after the irradiation with 15 W or 20 W. Moreover, clinical improvement was assessed by iconography. Results: Fractional CO₂-laser induced an inflammatory repair process mediated by activation of apoptotic pathway that was completed in 7 days. The expression of proapototic markers, as annexin-VII and Caspases-9 was increased 24–72 hours after irradiation and decreased after 7 days. While the expression of the anti-apototic marker Bcl-2 increased progressively during 7 days after treatment. Conclusion: Our study suggests that the skin's appearance may be enhanced by creating skin changes through apoptosis. Apoptosis, one of the major mechanisms of cell death, might play a key role in initiating the paracrine cascades that lead to cell proliferation.     

CO2点阵激光与1550nm铒玻璃点阵激光治疗妊娠纹的自身对照研究

目的： 评价CO2点阵激光与1550nm铒玻璃点阵激光治疗妊娠纹的疗效及安全性。方法：收集妊娠纹患者,以前正中线分腹部为左右两侧,左侧妊娠纹采用10600nm CO2点阵激光,右侧妊娠纹采用1550nm铒玻璃点阵激光治疗。每次治疗间隔2个月,治疗3次,末次治疗后随访3个月。结果：剔除2例失访患者,共25例患者完成本研究。84%患者右侧和48%患者左侧的皮损改善51％～75％,差异有统计学意义（P<0.05）。自我满意度评分中80%患者对右侧满意,68%对左侧满意。治疗后20%患者左侧色素沉着,8%患者右侧色素沉着。患者在治疗过程中疼痛评分右侧（5.41±2.13分）高于左侧（4.19±2.12分）,两者差异有统计学意义（P<0.001）。两侧均未出现永久性色素改变。结论：1550nm铒玻璃点阵激光较10600 nmCO2点阵激光更能有效治疗妊娠纹。