Photodynamic Therapy of Cancer Cells with Methanesulfonate Salts of 5-Aminolevulinic Acid and Its Derivatives

A series of 5-aminolevulinic acid and its alkylester methanesulfonates was exploited to photodynamic therapy（PDT） of human lymphocytic cells, U-937 in vitro. The PDT efficiency is influenced by the concentration and incubation time. Generally, for ALA and its alkylester methanesulfonates, the cell survival rate decreases and the accumulation ability of PplX increases with the concentration and incubation time. We found that the longer carbon chain methanesulfonates（C5-S, C6-S, C8-S） exhibit better PDT effect than ALA methanesulfonate. This possibly provides a promising route to the clinical application ofPplX-mediated PDT to cancer cell.

OPTIMIZATIONS FOR 5-AMINOLEVULINIC ACID BASED PHOTODYNAMIC THERAPY IN PURGING LEUKEMIA CELL HL60

Objective To optimize experimental parameters for the photosensitization of 5-aminolevulinic acid (ALA) in promyelocytic leukemia cell HL60 and compare them with normal human peripheral blood mononuclear cell (PBMC). Methods ALA incubation time, wavelength applied to irradiate, concentration of ALA incubated, irradiation fluence may modulate the effect of 5-aminolevulinic acid based Photodynamic Therapy (ALA-PDT).The high-pressure mercury lamps of 400W served as light source, the interference filter of 410nm, 432nm, 545nm, 577nm were used to select the specific wavelength. Fluorescence microscope was used to detect the fluorescence intensity and location of protoporphyrin IX (PpIX) endogenously produced by ALA. MTT assay was used to measure the survival of cell. Flow cytometry with ANNEXIN V FITC kit (contains annexin V FITC, binding buffer and PI) was used to detect the mode of cell death. Results ① 1mmol/L ALA incubated 1×105/mL HL60 cell line for 4 hours, the maximum fluorescence of ALA induced PpIX was detected in cytomembrane. ② Irradiated with 410nm for 14.4J/cm2 can result in the minimum survivability of HL60 cell. ③ The main mode of HL60 cell death caused by ALA-PDT is necrosis. Conclusion ALA for 1mmol/L, 4 hours for dark incubation time, 410nm for irradiation wavelength, 14.4J/cm2 for irradiation fluence were the optimal parameters to selectively eliminate promyelocytic leukemia cell HL60 by ALA based PDT. The photosensitization of ALA based PDT caused the necrosis of HL60 cell, so it could be used for inactivation of certain leukemia cells.

Recent advances in photodynamic diagnosis of gastriccancer using 5-aminolevulinic acid

Photodynamic diagnosis based on 5-aminolevulinic acidinduced protoporphyrin IX has been clinically applied in many fields based upon its evidenced efficacy and adequate safety. In order to establish a personalized medicine approach for treating gastric cancer patients, rapid intraoperative detection of malignant lesions has become important. Feasibility of photodynamic diagnosis using 5-aminolevulinic acid for gastric cancer patients has been investigated, especially for the detection of peritoneal dissemination and lymph node metastasis. This method enables intraoperative realtime fluorescence detection of peritoneal dissemination, exhibiting higher sensitivity than white light observation without histopathological examination. The method also enables detection of metastatic foci within excised lymph nodes, exhibiting a diagnostic accuracy comparable to that of a current molecular diagnostics technique. Although several complicating issues still need to be resolved, such as the effect of tissue autofluorescence and the insufficient depth penetration of excitation light, this simple and rapid method has the potential to become a useful diagnostic tool for gastric cancer, as well as urinary bladder cancer and glioma.

Development of a Photodynamic Diagnosis Method for Oral Squamous Cell Carcinoma Using 5-Aminolevulinic Acid and a Luminescence Plate Reader

Purpose: To establish a simple and accurate photodynamic diagnosis (PDD) method for oral squamous cell carcinoma (OSCC). Methods: OSCC cell lines HSC-2, HSC-3, HSC-4, and Sa3, and normal human oral keratinocytes (HOK) were used. First, we examined the amount of cells needed to detect differences in fluorescence intensities for PDD. OSCC cell lines were adjusted to concentrations of 1 × 104 (104), 1 × 105 (105), and 1 × 106 (106) cells/ml. The experimental groups comprised a group with 5-aminolevulinic acid (5-ALA (+)), and a group without 5-ALA (5-ALA (-)). For each OSCC cell line, 100 μl of each concentration of cells of the 5-ALA groups was seeded onto fluorescence plates, and fluorescence intensity was measured at 60-min intervals for 240 min. Results are expressed as the ratio of fluorescence intensity in 5-ALA (+) to 5-ALA (-). As cells at the concentration of 106 cells/ml provided the clearest results, fluorescence intensities of all cell lines were measured using this concentration at 20-min intervals for 700 min using the same methods. Results: The 5-ALA (+) to (-) ratio increased in a cell concentration-dependent manner at 240 min;the ratio was highest with 106 cells/ml and lowest with 104 cells/ml. With 106 cells/ml in the 5-ALA (+) group, fluorescence intensity increased in a metabolic time-dependent manner;the increase was highest in HSC-2 cells, followed by HSC-4 cells, HSC-3 cells, Sa3 cells, and HOK. Fluorescence intensity was significantly enhanced after 40 min in HSC-2, HSC-3, and HSC-4 cells, after 60 min in Sa3 cells, and after 100 min in HOK compared to the 5-ALA (-) group (P < 0.05). Moreover, fluorescence intensity was significantly increased in OSCC cell lines compared to HOK after 40 min. Conclusion: Early detection of OSCC is possible by screening only microplate reader measurements of fluorescence intensity for PDD.

Comparison of photodynamic therapy for skin cancers and pre-cancers with δ-aminolevulinic acid

Objective:The aim of the study was to compare the effects of photodynamic therapy(PDT) with δ-aminolevulinic acid(ALA) for patients with different kinds of skin cancers and pre-cancers.Methods:The present study enrolled seventyfive cases,which included 17 cases of actinic keratosis(AK),9 cases of Bowen's disease,11 cases of superficial basal cell carcinomas(BCC),23 cases of nodule basal cell carcinomas and 15 cases of squamous cell carcinomas(SCC),and every patient had single lesion.All patients were treated with 20% ALA topically and He-Ne laser weekly for three times,and followed up 1-3 years.Results:After therapy,the rates of complete reaction(CR) were 100% in AK lesions,77.8% in Bowen's diseases,90.9% in superficial BCCs,47.8% in nodule BCCs,and 50.3% in SCCs,which had significant differences among these five kinds of lesions(H = 18.27,P < 0.05).The therapeutic effectiveness of ALA-PDT for AK was superior to that of Bowen's disease(Q = 4.364,P < 0.05),superficial BCC(Q = 5.55,P < 0.01),SCC(Q = 8.94,P < 0.01) and nodule BCC(Q = 17.91,P < 0.01);the effect of Bowen's disease was better than that of SCC(Q = 7.8,P < 0.01),nodule BCC(Q = 13.44,P < 0.01);the effect of superficial BCC was better than that of SCC(Q = 9.73,P < 0.01),nodule BCC(Q = 16.28,P < 0.01),but similar with Bowen's disease(Q = 0.96,P > 0.05);the effect of SCC was better than that of nodule BCC(Q = 17.74,P < 0.01).Conclusion:Our study shows that therapeutic effectiveness of ALA-PDT for AK is best in five diseases,and Bowen's disease and superficial BCC are secondary,while nodule BCC and SCC are at the bottom.

5-aminolaevulinic Acid-photodynamic Therapy for the Treatment of Cervical Condylomata Acuminata

Objective To investigate the efficacy and safety of photodynamic therapy （PDT） with topical 5-aminolaevulinic acid （ALA） on cervical condylomata acuminata. Methods Patients with cervical condylomata （n=30） were allocated into primary and recurrent group, and were given topical ALA under occlusive dressing for 3 hours followed by irradiation with semiconductor laser at a dose of 100 Jcm 2 and a power of 100 roW. The treatment was repeated 7 days later if the lesion was not completely removed after the first treatment. Complete response rate and recurrence rate of wart lesions as well as rate of adverse reaction were analyzed. Results The total complete response rate of PDT was 100% and the total recurrence rate was 5% after 3 months of follow-up. Recurrence rate of recurrent group was significantly lower than that of prior managements （100%, P〈0.01）. The side effects of PDT in patients mainly included mild burning and/or stinging restricted to the illuminated areas, and was significant lower than their own control （25% vs. 100%, P〈0.05）. Conclusion Compared with conventional therapies, topical application of ALA-PDT is a simple, effective, safe, well-tolerated, and low recurrence rate treatment for cervical condylomata acuminata.

Clinical applications of 5-aminolevulinic acid-mediated fluorescence for gastric cancer

5-aminolevulinic acid(ALA) is a naturally occurring amino acid that is a protoporphyrin IX(Pp IX) precursor and a next-generation photosensitive substance. After exogenous administration of ALA, Pp IX specifically accumulates in cancer cells owing to the impaired metabolism of ALA to Pp IX in mitochondria, which results in a red fluorescence following irradiation with blue light and the formation of singlet oxygen. Fluorescence navigation by photodynamic diagnosis(PDD) using ALA provides good visualization and detection of gastric cancer lesions and is a potentially valuable diagnostic tool for gastric cancer for evaluating both the surgical resection margins and extension of the lesion. Furthermore, PDD using ALA might be used to detect peritoneal metastases during preoperative staging laparoscopy, where it could provide useful information for the selection of a therapeutic approach. Another promising application for this modality is in the evaluation of lymph node metastases. Photodynamic therapy(PDT) using ALA to cause selective damage based on the accumulation of a photosensitizer in malignant tissue is expected to be a non-invasive endoscopic treatment for superficial early gastric cancer. ALA has the potential to be used not only as a diagnostic agent but also as a therapeutic drug, resulting in a new strategy for cancer diagnosis and therapy. Here, we review the current use of PDD and PDT in gastric cancer and evaluate its future potential beyond conventional modalities combined with a light energy upconverter, a light-emitting diode and nearinfrared rays as light sources.

5-Aminolevulinic Acid (5-ALA): Analysis of Preclinical and Safety Literature

Problem: 5-ALA has been used for many years at relatively high dose amounts in single doses for photodynamic therapy and immunofluorescence of tumors. An analysis of compiled data relating to safety and any side-effects about the use of 5-ALA at low doses has not yet been published. Purpose: This report analyzes data about the safety of the use of 5-Aminolevulinic Acid (5-ALA) in low doses as a supplement over an extended period of time. Methods: This investigation is a systematic analysis of the current literature ((Medline, and SBI) and snowballing techniques) related to the safety and efficacy of 5-ALA in animals and humans. Clinical trials in progress using 5-ALA were also analyzed. Constant comparative analyses were used to synthesize the findings. Results: The safety of low-dose 5-ALA as a supplement has been demonstrated by animal and human studies. The results suggest that none of the investigations document the presence of symptoms or abnormal laboratory results of clinical significance. The minor laboratory changes documented were judged not clinically significant.

Low Frequency Ultrasonication Induced Antitumor Effect in 5-Aminolevulinic Acid Treated Malignant Glioma

We investigated the feasibility of sonodynamic therapy for glioma by low frequency ultrasoundwith5-aminolevulinic acid (5-ALA), a precursor of protoporphyrin IX (PpIX) in heme synthetic process. In vivo tumor model was made by inoculating human glioma cell line U87-MG subcutaneously in nude mice. The tumor was sonicated by 25-kHz ultrasound 4 hours following administration of 5-ALA. The tumor size decreased in 5-ALA administered (ALA(+)US(+)) mice, while increased in non-5-ALA administrated (ALA(-)US(+)) mice and non-sonicated mice (ALA(+)US(-)). The immunohistochemical analysis revealed an apoptotic change in tumor tissue of ALA(+)US(+) mice. The results showed the therapeutic effect of 25 kHz ultrasound for the glioma in 5-ALA administered tumor-bearing mice by inducing apoptotic change of tumor cells. This is a first report to elucidate the feasibility of therapeutic use of 25 kHz, relatively low frequency, ultrasound in sonodynamic therapy using 5-ALA as a sonosensitizer precursor. The utilization of this frequency will contribute to the development of sonodynamic therapy for gliomas and the spread of this technique in many hospitals that possess ultrasonic aspirators.

CO_(2)LASER PLUS PHOTODYNAMIC THERAPY VERSUS CO_(2)LASER IN THE TREATMENT OF CONDYLOMA ACUMINATUM:A RANDOMIZED COMPARATIVE STUDY

To compare the efficacy and safety of CO_(2)laser plus 5-aminolevulinic acid(ALA)photodynamic therapy(PDT)with CO_(2)laser for the treatment of multiple condyloma acuminatum(CA),120 patients with multiple CA were allocated into two groups—combined group(CO_(2)laser plus ALA-PDT,n=60)and CO_(2)laser group(CO_(2)laser plus placebo-PDT,n=60).After CO_(2)laser,a 20%ALA or a placebo solution was applied to the CA area 3 h before illumination with red light(635 nm,100mW/cm^(2),80 J/cm^(2)).The treatment was repeated seven days after the first treatment if the lesions were not completely resolved.The complete response rate,recurrence rate and adverse effects in the two groups were analyzed.After two treatments,the complete response rates in the CO_(2)laser group and combined group were 100%(509/509)and 100%(507/507)in the CA(p>0:05),respectively.The recurrence rates in the CO_(2)laser group and combined group were 44.9%(229/509)and 10.6%(54/507)in the CA(p<0:05),respectively.The adverse effects in CO_(2)laser group was more than that in combined group.The combined group is a more effective treatment for multiple CA compared with CO_(2)laser group.T/S.Style the highlighted text as abstract.

Clinical Effect of Photodynamic Therapy Combined Cryotherapy on Nonmelanoma Skin Cancer

The purpose of this study was to investigate the clinical efficacy of photodynamic combined freezing in patients with non-melanoma skin cancer(NMSC).First,according to the treatment regimen,96 patients with NMSC were divided into study group(n=50)and control group(n=46).The control group was treated with 5-amino-ketovalic acid photodynamic therapy(ALAPDT),while the study group was treated with ala-PDT combined with cryotherapy.Visual analogue scale(VAS)scores,visual satisfaction,clinical efficacy,adverse reactions,and progression-free survival were compared between the two groups.The results showed that VAS score in the study group was slightly higher than that in the control group,but the difference was not statistically significant(P>0.05).The appearance satisfaction and total effective rate of patients in the study group were higher than those in the control group,and the difference was statistically significant(P<0.05).The total incidence of adverse reactions in the study group was slightly higher than that in the control group,but the difference was not statistically significant(P>0.05).3 years progressionfree survival time and 3 years progression-free survival rate were compared between the two groups,and the difference was not statistically significant(P>0.05).Therefore,the combination of PDT and cryotherapy for non-melanoma skin cancer has a good clinical effect,which is conducive to the recovery of skin lesions,high patient satisfaction,fewer adverse reactions,and longer progression-free survival.In addition,the combined therapy can provide a new treatment idea for non-melanoma skin cancer patients who are not suitable for surgical treatment.

ALA-PDT对K562、HL60细胞株破坏的实验研究

探讨基于氨乙酰丙酸介导的光动力作用(ALA-PDT)对白血病细胞株HL60和K562细胞的杀伤模式及其可能机制。在ALA-PDT处理细胞的优化条件下,用透射电镜对处理细胞进行超微结构观察,选择AnnexinV-FITC/PI双标法明确ALA-PDT对两种白血病细胞的杀伤模式,PI染色流式细胞仪分析ALA-PDT后细胞周期的变化,以Fluo-3/AM为钙离子指示剂采用激光共聚焦显微镜检测细胞内钙离子浓度的变化。透射电镜观察发现PDT后即刻的细胞呈现典型的凋亡小体,24h后大部分发生坏死;双标法检测显示PDT后即刻及24h后细胞的死亡模式分别以凋亡和凋亡后坏死为主。光动力作用后即刻和作用后2h,K562细胞S期所占的比例分别为57.67%±1.13%和84.77%±6.20%,HL60细胞S期所占的比例分别为74.6%±7.27%和84.60%±1.74%;两种细胞内钙离子浓度的均明显升高。在最佳试验条件下,凋亡是ALA-PDT杀伤白血病细胞K562和HL60细胞的最初模式,而凋亡后坏死为其主要模式,ALA-PDT使白血病细胞株阻滞于S期,在白血病细胞株死亡的过程中,细胞内钙离子浓度的增加可能起着重要的作用。

5-氨基酮戊酸光动力疗法(ALA-PDT)治疗Bowen病的临床分析

目的分析5-氨基酮戊酸(ALA)光动力学疗法(PDT)治疗Bowen病的临床近期效果。方法选择经病理组织学检查确诊为Bowen病患者23例,随机分为治疗组12例和对照组11例。治疗组皮损处局部外用20%ALA霜,3 h后行红光照射,剂量为(100～120)J/cm2,照射时间约20～30 min,4周内每周照射1次。对照组每日外用5-氟尿嘧啶软膏(5-FU软膏)2次,用药4周。比较两组患者的临床疗效。结果治疗组完全有效率91.67%,总有效率100%;对照组完全有效率27.27%,总有效率90.91%。治疗组的完全有效率明显优于对照组,两组间差异有统计学意义(P<0.01)。结论 ALA-PDT治疗Bowen病简单有效、耐受性好,且无严重副作用,值得临床推广。

5-ALA-PDT对A431细胞的抑制作用及细胞凋亡的诱导作用

目的探讨5-ALA-PDT对A431细胞增殖与凋亡的影响。方法将细胞分为对照组以及不同剂量的5-ALA-PDT处理组(5-ALA孵育浓度分别为:0.05、0.1、0.2、0.4、0.8 mg/ml,激光能量密度分别为1.25、2.5、5 J/cm^2),处理24 h后采用MTT法检测5-ALA-PDT对A431细胞存活率的影响,采用流式细胞术(FCM)检测5-ALA-PDT对A431细胞的周期及凋亡的影响。结果 MTT法检测结果显示在不同的5-ALA孵育浓度(0.05、0.1、0.2、0.4、0.8 mg/ml)和不同的激光能量密度(1.25、2.5、5 J/cm^2)处理A431细胞时,当激光的能量密度和孵育的浓度都较低的时候.在5-ALA-PDT的作用下,A431细胞的杀伤曲线平缓的下降,然而伴随着激光的能量密度和光敏剂5-ALA浓度的不断加强,可见抑制曲线的下降速度十分迅速,各组细胞的存活率在达到较高的强度时呈现相接近的趋势。当5-ALA孵育浓度达到0.8 mg/ml时,不同激光能量密度处理的细胞存活率差异无统计学意义(P>0.05);5-ALA-PDT作用后使A431细胞滞留在G0/Gl期,A431细胞的增殖指数(PI)降低;与对照组相比,5-ALA-PDT处理后可以显著增加A431细胞的凋亡率和坏死率(P<0.05)。结论 5-ALA-PDT显著抑制皮肤鳞状细胞癌A431细胞的增殖,促进A431细胞的凋亡。

CO_2激光联合5-氨基酮戊酸光动力疗法(ALA-PDT)对尖锐湿疣患者的治疗效果及安全性

目的:探讨CO_2激光联合5-氨基酮戊酸光动力疗法(ALA-PDT)对尖锐湿疣患者的治疗效果及安全性。方法:整取抽样2015年1月~2016年1月我院就诊的尖锐湿疣患者84例,按数字奇偶法分为2组,奇数进入对照组42例,单纯采取CO_2激光治疗,偶数进入观察组42例,采取ALA-PDT联合CO_2激光治疗,比较两组治疗效果。结果:对照组比较,观察组治愈率提高,复发率降低,差异有统计学意义(P<0.05)。结论:对尖锐湿疣患者采取ALA-PDT联合CO_2激光治疗的效果显著,有效缓解患者症状,且复发率低。

5-氨基酮戊酸光动力疗法(ALA-PDT)联合CO_2激光治疗尖锐湿疣的效果观察

目的观察5-氨基酮戊酸光动力疗法(ALA-PDT)联合CO_2激光治疗尖锐湿疣的效果。方法将尖锐湿疣患者90例随机分为研究组和对照组,每组45例。研究组患者采用ALA-PDT联合CO_2激光治疗,对照组患者单独采用CO_2激光治疗,比较2组患者的治疗效果。结果研究组康复率明显高于对照组,复发率低于对照组,差异均有统计学意义(P<0.05)。结论 ALA-PDT联合CO_2激光治疗尖锐湿疣患者有较高临床疗效,值得临床推广。

5-ALA-PDT对糖尿病患者伴发的红癣的疗效研究

目的:研究5-氨基酮戊酸光动力学疗法对糖尿病患者伴发的红癣的疗效。方法:将入选的50例患者随机分为两组(研究组和对照组),每组25例。5-氨基酮戊酸光动力学疗法用于研究组;硫磺软膏用于对照组。结果:研究组的临床症状评分、治愈率和总有效率均明显优于对照组,差异有统计学意义(P<0.05)。结论:5-氨基酮戊酸光动力学疗法能有效治疗糖尿病患者伴发的红癣。

5-氨基酮戊酸光动力治疗对鲍温病皮损中p53 Caveolin-1表达的影响

目的:探讨5-氨基酮戊酸光动力疗法对鲍温病皮损中p53、Caveolin-1表达的影响及意义。方法:运用5-氨基酮戊酸光动力疗法治疗鲍温病及周围正常皮肤组织各40例,采用免疫组织化学技术(SP法)检测光动力治疗前后鲍温病及周围正常皮肤组织中p53、Caveolin-1的阳性细胞表达率。结果:治疗前p53蛋白在正常皮肤组织及BD中表达的阳性率分别为10%、40%(χ^(2)=11.202,P<0.001),差异有统计学意义。治疗后p53在正常皮肤组织及BD的阳性率为10%、5%(χ^(2)=0.712,P=0.399),两者间差异无统计学意义。治疗前后p53在BD中的阳性表达率差异有统计学意义(χ^(2)=14.811,P<0.001)。治疗前Caveolin-1在正常皮肤组织及BD中阳性表达率为15%、55%(χ^(2)=14.449,P<0.001),两者间差异有统计学意义。治疗后正常皮肤组织及BD中Caveolin-1的阳性率为5%、12.5%(χ^(2)=0.816,P=0.366),差异无统计学意义。治疗前后Caveolin-1在BD中的阳性表达率差异有统计学意义(χ^(2)=19.013,P<0.001)。BD中p53与Caveolin-1阳性表达呈正相关性(r=0.533,P=0.015)。结论:p53及Caveolin-1的高表达可能与BD的发生密切关联,且ALA-PDT能够抑制p53及Caveolin-1的表达,从而抑制疾病的发展。通过更大样本量的研究,p53及Caveolin-1可能会成为皮肤相关疾病的诊断工具,并为其治疗提供新的靶点。

5-氨基酮戊酸光动力疗法治疗非黑色素瘤性皮肤癌患者的临床疗效

目的探讨5-氨基酮戊酸光动力疗法(ALA-PDT)治疗非黑色素瘤性皮肤癌(NMSC)患者的临床疗效。方法根据治疗方案的不同将52例NMSC患者分为A组(25例)和B组(27例),A组患者接受手术治疗,B组患者在A组的基础上接受ALA-PDT治疗。比较两组患者的临床疗效、血清学指标[转录中介因子1-γ(TIF1-γ)、Nodal、白细胞介素-1β(IL-1β)、转化生长因子-β1(TGF-β1)]、皮损面积、生活质量[生活质量综合评定问卷-74(GQOLI-74)]及外观满意度。结果B组患者的总有效率、外观总满意度均高于A组,差异均有统计学意义(P﹤0.05)。治疗后4周,两组患者TIF1-γ、Nodal、IL-1β、TGF-β1水平均低于本组治疗前,皮损面积均小于本组治疗前,GQOLI-74各维度评分均高于本组治疗前,B组患者TIF1-γ、Nodal、IL-1β、TGF-β1水平均低于A组,皮损面积小于A组,GQOLI-74各维度评分均高于A组,差异均有统计学意义(P﹤0.05)。结论ALA-PDT治疗NMSC患者效果较好,可降低血清学指标水平,减小皮损面积,提高患者外观满意度和生活质量。

ALA-PDT联合他克莫司软膏对玫瑰痤疮患者症状缓解时间及生活质量的影响

目的:探究5-氨基酮戊酸-光动力疗法(ALA-PDT)联合他克莫司软膏对玫瑰痤疮患者症状缓解时间及生活质量的影响。方法:选取2020年6月—2023年8月中国人民解放军陆军第七十三集团军医院接收的90例玫瑰痤疮患者,以随机数字表法分为两组,即对照组(n=45)、观察组(n=45)。对照组用他克莫司软膏治疗,观察组予以ALA-PDT联合他克莫司软膏治疗,均治疗4周。比较两组疗效、症状缓解时间、症状积分及生活质量[皮肤病生活质量指数(DLQI)]。结果:与对照组比,观察组总有效率高,症状缓解时间均早,差异均有统计学意义(P<0.05);治疗后,两组症状积分、DLQI评分均下降,且观察组均低于对照组,差异均有统计学意义(P<0.05)。结论:ALA-PDT联合他克莫司软膏治疗玫瑰痤疮可提高效果,缩短症状缓解时间,提高患者生活质量。