1.Investigation on the current status and optimization strategies for the standardized on-the-job training for community clinical pharmacists in Shanghai
Yangjiayi XIANG ; Jing SHENG ; Liping WANG ; Lie LUO ; Yuan YUAN ; Xiaodan ZHANG ; Yan LI ; Bin WANG ; Guanghui LI
China Pharmacy 2025;36(13):1568-1573
OBJECTIVE To systematically investigate the current status and effectiveness of the standardized on-the-job training program for community clinical pharmacists in Shanghai, and to provide a scientific basis for optimizing the training scheme. METHODS A questionnaire survey was conducted to collect the data from trainees and mentor pharmacists who participated in the program between 2016 and 2024. The survey examined their basic information, evaluations of the training scheme, satisfaction with training outcomes, and suggestions for improvement. Statistical analyses were also conducted. RESULTS A total of 420 valid responses were collected, including 340 from trainees and 80 from mentor pharmacists. Before training, only 30.29% of trainees were engaged in clinical pharmacy-related work, whereas this proportion increased to 73.24% after training. Most mentor pharmacists had extensive experience in clinical pharmacy (76.25% with ≥5 years of experience) and mentoring (78.75% with ≥3 teaching sessions). Totally 65.59% of trainees and 55.00% of mentor pharmacists believed that blended training yielded the best learning outcomes. Over 80.00% of both trainees and mentor pharmacists considered the overall training duration, theoretical study time, and practical training time to be reasonable. More than 95.00% of trainees and mentor pharmacists agreed that the homework and assessment schemes were appropriate. Trainees rated the relevance of training content to their actual work highly (with an average relevance score >4.5), though they perceived the chronic disease medication therapy management module as significantly more challenging than the prescription review and evaluation module and the home-based pharmaceutical care module. The average satisfaction score of trainees and mentor pharmacists with the training effectiveness of each project was above 4 points, indicating a high overall satisfaction. Inadequate provision of teaching resources was unanimously recognized by trainees and mentor pharmacists as the key area requiring improvement. CONCLUSIONS The standardized on-the-job training program for community clinical pharmacists in Shanghai has contributed to improving pharmaceutical services in community healthcare settings. However, ongoing improvements must concentrate on content design, resource development, and faculty cultivation.
2.Self-sufficient nanoparticles with dual-enzyme activity trigger radical storms and activate cascade-amplified antitumor immunologic responses.
Liping BAI ; Jin YANG ; Siting YU ; Zhongzheng XIANG ; Yuanyuan ZENG ; Meiling SHEN ; Xiaorong KOU ; Qinjie WU ; Changyang GONG
Acta Pharmaceutica Sinica B 2024;14(2):821-835
Radiotherapy (RT) can potentially induce systemic immune responses by initiating immunogenic cell death (ICD) of tumor cells. However, RT-induced antitumor immunologic responses are sporadic and insufficient against cancer metastases. Herein, we construct multifunctional self-sufficient nanoparticles (MARS) with dual-enzyme activity (GOx and peroxidase-like) to trigger radical storms and activate the cascade-amplified systemic immune responses to suppress both local tumors and metastatic relapse. In addition to limiting the Warburg effect to actualize starvation therapy, MARS catalyzes glucose to produce hydrogen peroxide (H2O2), which is then used in the Cu+-mediated Fenton-like reaction and RT sensitization. RT and chemodynamic therapy produce reactive oxygen species in the form of radical storms, which have a robust ICD impact on mobilizing the immune system. Thus, when MARS is combined with RT, potent systemic antitumor immunity can be generated by activating antigen-presenting cells, promoting dendritic cells maturation, increasing the infiltration of cytotoxic T lymphocytes, and reprogramming the immunosuppressive tumor microenvironment. Furthermore, the synergistic therapy of RT and MARS effectively suppresses local tumor growth, increases mouse longevity, and results in a 90% reduction in lung metastasis and postoperative recurrence. Overall, we provide a viable approach to treating cancer by inducing radical storms and activating cascade-amplified systemic immunity.
3.Correlation between lncRNA GAS5 and LHPP expression and epithelial-mesenchymal transformation in non-small cell lung cancer tissues and clinical significance
Liping CHEN ; Qiang JI ; Yanhong CHEN ; Yongxing SHI ; Ping FENG ; Weijia LIN ; Baoli XIANG ; Jianqing ZHAO
International Journal of Laboratory Medicine 2024;45(3):301-307,313
Objective To investigate the correlation between the expression of long non-coding ribonucleic acid growth arrest specific 5(lncRNA GAS5),phospholysine phosphohistidine inorganic pyrophosphate phos-phatase(LHPP)and epithelial-mesenchymal transition(EMT)in cancer tissues of patients with non-small cell lung cancer(NSCLC)and its clinical significance.Methods Cancer tissues and adjacent tissues of 90 patients with NSCLC who underwent surgical resection in the First Hospital Affiliated to Hebei North College from June 2018 to January 2020 were collected.The expressions of lncRNA GAS5,LHPP and EMT-associated pro-teins[E-calmodulin(E-Cad),N-calmodulin(N-Cad),and vimentin(VIM)]were detected by real-time fluores-cence quantitative polymerase chain reaction.The relationship between lncRNA GAS5 and LHPP mRNA and clinicopathological features in cancer tissues of NSCLC patients was analyzed,and the correlation between ln-cRNA GAS5 and LHPP mRNA and EMT-associated proteins expression in cancer tissues of NSCLC patients was analyzed by Pearson correlation.Kaplan-Meier method was used to plot the survival curves of NSCLC pa-tients with different lncRNA GAS5 and LHPP mRNA expressions,and multivariate Cox regression was used to analyze the prognostic factors of NSCLC patients.Results The expressions of lncRNA GAS5,LHPP mR-NA and E-Cad mRNA in cancer tissues of NSCLC patients were lower than those in adjacent tissues,while the expressions of N-Cad mRNA and VIM mRNA were higher than those in adjacent tissues,with statistical sig-nificance(P<0.05).Pearson correlation analysis showed that lncRNA GAS5 in cancer tissues of NSCLC pa-tients was positively correlated with E-Cad mRNA expression(r=0.724,P<0.001),and negatively correla-ted with N-Cad mRNA and VIM mRNA expression(r=-0.699,-0.689).P<0.001);lncRNA GAS5 was positively correlated with LHPP mRNA expression(r=0.651,P<0.001).The mRNA expressions of ln-cRNA GAS5 and LHPP in cancer tissues of NSCLC patients with different degrees of differentiation,tumor TNM stage and lymph node metastasis were significantly different(P<0.05).Kaplan-Meier survival curve a-nalysis showed that the 3-year overall survival rate in the lncRNA GAS5 high expression group[68.18%(30/44)]was higher than that in the lncRNA GAS5 low expression group[36.96%(17/46)].The 3-year overall survival rate in the high LHPP mRNA expression group[67.39%(31/46)]was higher than that in the lowLHPP mRNA expression group[36.36%(16/44)],and the difference was statistically significant(x2=10.274,10.322,P<0.05).Low differentiation,TNM stage Ⅲ and lymph node metastasis were independent risk factors for death in NSCLC patients,and lncRNA GAS5≥1.32 and LHPP mRNA≥1.12 were independ-ent protective factors(P<0.05).Conclusion The low expression of lncRNA GAS5 and LHPP mRNA in cancer tissues of patients with NSCLC is related to EMT-associated proteins expression,differentiation de-gree,tumor TNM stage,lymph node metastasis and prognosis,and may become a new target for the diagnosis and treatment of NSCLC.
4.Comparison of Wild and Cultivated Codonopsis pilosula Based onTraditional Quality Evaluation
Xiaoyan LAN ; Chunfang TIAN ; Zhilai ZHAN ; Li ZHOU ; Xiang LI ; Zidong QIU ; Tiegui NAN ; Qili YUAN ; Xiaoliang LIN ; Congkui TIAN ; Meilan CHEN ; Liping KANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(14):156-164
ObjectiveTo conduct a systematic comparative study on wild and cultivated Codonopsis pilosula(CP) from three aspects, including characters, microscopy, and contents of primary and secondary metabolites. MethodWild and cultivated CP samples were collected, their characters were measured using vernier caliper, tape measure and balance, the paraffin sections were stained with safranin-fixed green dyeing, and their microstructure were observed under the optical microscope. The content of alcohol-soluble extracts in wild and cultivated CP was determined according to the method for determination of extract under CP in the 2020 edition of Chinese Pharmacopoeia, the starch content was determined by anthrone colorimetry, the content of total polysaccharides was determined by kit method, Fiber analyzer was used to determine the content of fiber components, and ultra performance liquid chromatography(UPLC) was used to determine the content of monosaccharides, disaccharides and some secondary metabolites. Multivariate statistical analysis methods such as principal component analysis(PCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA) were employed to screen key differential components between wild and cultivated CP on the basis of variable importance in the projection(VIP) value>1 and P<0.05. ResultIn terms of morphological characteristics, the "lion's head-like" shape, longitudinal wrinkles, and circumferential wrinkles below the root cap of wild CP were more pronounced in wild CP compared to the cultivated ones. Regarding transverse sectional features, wild CP had more fissures on the outer side of the cortex and a larger duramen. Under microscopic examination, wild CP had more stone cells, a larger proportion of xylem, and the presence of cork cells arranged in rings in the xylem, while cultivated CP has a larger proportion of phloem, smaller vessel diameters, and a more loosely arranged vascular system. In terms of primary metabolites, the contents of 45% ethanol-soluble extract and total polysaccharides in cultivated CP were significantly higher than those in the wild ones(P<0.05), the contents of lignin, hemicellulose, cellulose, fructose and glucose in wild CP were significantly higher than those in the cultivated ones(P<0.05), while sucrose content in the cultivated CP was significantly higher than that in the wild ones(P<0.05). Concerning secondary metabolites, the contents of tryptophan and tangshenoside Ⅰ in cultivated CP were significantly higher than those in the wild ones(P<0.05), whereas the contents of lobetyolinin, lobetyol and atractylenolide Ⅲ in wild CP were significantly higher than those in the cultivated ones(P<0.05). ConclusionThere are significant differences between wild and cultivated CP in terms of morphological characteristics, microscopic features and chemical composition. Glucose, fructose, sucrose, tangshenoside Ⅰ, tryptophan and cellulose components are the key differential components between wild and cultivated CP. Wild CP contains more polyacetylenes and fructose, whereas cultivated CP has higher levels of tangshenoside Ⅰ and sucrose, with noticeably lower cellulose content. These distinctions may be related to their growth conditions, growth years and cultivation techniques. Based on the results of this study, it is recommended to increase polyacetylenes and the content ratio of fructose to sucrose as an indicators to characterize different production methods of CP, in order to guide the high-quality production of CP.
5.Comparison of Wild and Cultivated Paeoniae Radix Rubra Based on Traditional Quality Evaluation
Chunfang TIAN ; Qiannan HU ; Zhilai ZHAN ; Xiaoyan LAN ; Xiang LI ; Li ZHOU ; Tiegui NAN ; Zidong QIU ; Liping KANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(14):165-174
ObjectiveTo compare wild and cultivated Paeoniae Radix Rubra(PRR) in three aspects, including character, microscope, determination of primary and secondary metabolites. MethodSeventeen batches of wild and nine batches of cultivated PRR were collected,their character data were measured by vernier caliper and scales, and their paraffin sections were made by safranin-fixed green dyeing for the observation of microscopic features. The content of ethanol-soluble extracts and total tannin from wild and cultivated PRR was determined by the method of general principle 2201 and 2202 in the 2020 edition of Chinese Pharmacopoeia, the content of polysaccharides was determined by phenol-sulfuric acid method. Anthrone colorimetry was used to determine the content of starch, and Van Soest method of washing fiber was used to determine the content of fiber. The contents of fructose, glucose and sucrose in wild and cultivated PRR were determined by ultra-high performance liquid chromatography evaporative light scattering detection(UPLC-ELSD), and the secondary metabolites(gallic acid, methyl gallate, catechin, oxypaeoniflorin, albiflorin, paeoniflorin, ellagic acid, 1,3,4,6-tetragalloylglucose, galloylpaeoniflorin, 1,2,3,4,6-O-pentagalloylglucose, naringenin, benzoylpaeoniflorin and benzoylalbiflorin) were determined by UPLC. Principal component analysis(PCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA) were used to analyze the data of wild and cultivated PRR, the contribution of different factors to the difference was determined according to the variable importance in the projection(VIP) value>1 and P<0.05. ResultIn term of characters, wild PRR showed the traditional characteristic of Zaopi Fencha, its outer skin was loose and easy to fall off, its surface had longitudinal furrow and wrinkle, but the outer skin of cultivated PRR was not easy to fall off, and its surface was relatively smooth. The radial texture of xylem of wild PRR cross-section was more obvious, showing radial striations, vacuoles and more cracks, while the radial texture of xylem of cultivated PRR cross-section was not obvious, dense and some had cracks. Microscopically, the number of radial vessels arranged in the xylem of wild PRR was more than that of cultivated PRR, the number of calcium oxalate clusters in the phloem and xylem of wild PRR was more than that of cultivated PRR, while the number of starch grains was significantly higher in cultivated PRR. In terms of the content of primary chemical constituents, the contents of polysaccharides and starch of cultivated PRR were significantly higher than those of wild PRR(P<0.05), while the contents of cellulose, lignin, fructose and glucose of wild PRR were significantly higher than those of cultivated PRR(P<0.05). The results of determination of 13 secondary metabolites showed that the contents of paeoniflorin, methyl gallate, catechin and oxypaeoniflorin in wild PRR were significantly higher than those in cultivated PRR(P<0.05), while the contents of albiflorin, gallic acid, ellagic acid, naringenin, benzoylpaeoniflorin and benzoylalbiflorin were significantly lower than those of cultivated PRR(P<0.05). A total of 10 variables contributing to the differentiation between wild and cultivated PRR were screened, including albiflorin, cellulose, benzoylpaeoniflorin, oxypaeoniflorin, naringenin, ellagic acid, starch, lignin, paeoniflorin and total tannins. ConclusionThere are significant differences between wild and cultivated PRR in characters, microscopic characteristics, contents of primary and secondary metabolites. It is suggested that the content ratio of paeoniflorin and albiflorin, the contents of oxypaeoniflorin and cellulose can be used as indicators to characterize production methods of PRR so as to improve the quality standard of PRR. This study can provide reference for the improvement of quality standard of PRR and the guidance of high quality production of PRR.
6.Efficacy observation of clinical medication guided by genetic testing of antipsychotic drugs in patients with schizophrenia
Haiyan WANG ; Jianfeng CAO ; Liping FU ; Liangcheng XIANG ; Tao TIAN ; Jixiang WANG ; Ming SHI ; Xiaojun LI ; Chunguang TANG
Sichuan Mental Health 2024;37(5):420-426
Background Results of genetic testing for antipsychotic drugs can guide the rational use of drugs in clinical practice and help improve the clinical symptoms of patients with schizophrenia.However,there is currently limited evidence in China regarding the impact of genetic testing results on medication adherence,social function and drug side effects of antipsychotic drug treatment.Objective To explore the improvement of clinical symptoms,medication adherence and social function in patients with schizophrenia under the guidance of antipsychotic drug gene testing results and examine the safety of drug treatment,so as to provide references for ifor precise treatment of schizophrenia patients.Methods Patients with acute schizophrenia who received hospitalization at Dazhou Minkang Hospital from July 2019 to August 2021 as well as met the diagnostic criteria of the International Classification of Diseases,tenth edition(ICD-10)were selected as research subjects(n=144).Based on random number table,subjects were divided into study group and control group,with 72 cases in each group.Control group received drug treatment based on the doctor's clinical experience,while study group received drug treatment based on the results of gene testing for antipsychotic drug.Both treatments lasted for 12 weeks.At baseline as well as 2,4,8 and 12 weeks after treatment,Positive and Negative Syndrome Scale(PANSS),8-item Morisky Medication Adherence Scale(MMAS-8),Social Functional Rating Scale(SFRS)and Treatment Emergent Symptom Scale(TESS)were adopted for assessment.Result Time effect and group effect of the reducing rate of PANSS,MMAS-8 and SFRS scores in the groups were statistically significant(Ftime=95.251,6.650,14.101,Fgroup=38.055,58.175,128.221,P<0.01).The interaction effect of the reduction rates of MMAS-8 scores in two groups was statistically significant(Finteraction=5.837,P<0.01).The group effect and interaction effect of the severity scores of drug side effects and patient pain scores in two groups were statistically significant(Fgroup=7.553,81.533,Finteraction=8.693,9.322,P<0.01).Conclusion In terms of improving clinical symptom relief,medication adherence,social function and drug side effects,medication for patients with schizophrenia guided by genetic testing of antipsychotic drugs may be more effective than that relying on medication based on clinical experience.
7.Effect and mechanism of miR-217 targeting ERK2 expression on activity and immune escape of non-small cell lung cancer cells
Liping CHEN ; Ping FENG ; Weijia LIN ; Baoli XIANG ; Jianqing ZHAO ; Qiang JI ; Yanhong CHEN ; Yongxing SHI
Chinese Journal of Immunology 2024;40(9):1895-1901
Objective:To investigate the effect and mechanism of miR-217 targeted regulation of extracellular signal-regulated kinase 2(ERK2)expression on activity and immune escape of non-small cell lung cancer cells(NSCLC).Methods:qRT-PCR was used to detect expression levels of miR-217 and ERK2 mRNA in NSCLC tissues,adjacent tissues,and HLF-1,A549 and HCC827 cell lines.Analyzed prognosis and survival status of NSCLC patients with different miR-217 expression level.Bioinformatics and dual luciferase gene reporting experiments were used to analyze the targeting relationship between miR-217 and ERK2.Cultivated NSCLC A549 cells and divided them into NC group,miR-217 inhibitor group,miR-217 mimic group,miR-217 mimic+ERK2 NC group and miR-217 mimic+ERK2 group.Except for the NC group without any treatment,all other groups were transfected with corresponding plasmids to analyze the proliferation activity and immune escape status of A549 cells in each group,and clarified the mechanism of action.Results:Compared with adjacent tissues,expression of miR-217 in NSCLC tissue was decreased,while expression of ERK2 mRNA was increased(P<0.05).Compared with human normal lung fibroblast HLF-1 cell lines,expression of miR-217 in NSCLC cell lines A549 and HCC827 were decreased,while expression of ERK2 mRNA was increased(P<0.05).Analysis of the relationship be-tween miR-217 and prognosis of NSCLC patients based on Kaplan-Meier Plotter database showed that low expression of miR-217 was associated with poor prognosis of patients(HR=0.90,P=0.033).Dual fluorescein reporter genes showed matching sequences between the 3'UTR regions of miR-217 and ERK2.miR-217 mimic fragment could inhibit ERK2-WT signal,but had no effect on ERK2-MUT.Compared with NC group,cell proliferation activity,PD-L1 and PD-L2 mRNA expression levels of miR-217 inhibitor group were in-creased,while CD8+T cell activity was decreased,and cell proliferation activity,PD-L1 and PD-L2 mRNA expression levels of miR-217 mimic group were decreased,while CD8+T cell activity was increased(P<0.05).Compared with miR-217 mimic group,cell pro-liferation activity,CD8+T cell activity,PD-L1 and PD-L2 mRNA expression levels of miR-217 mimic+ERK2 NC group had no signifi-cant changes(P>0.05),cell proliferation activity,PD-L1 and PD-L2 mRNA expression levels of miR-217 mimic+ERK2 group were increased,while CD8+T cell activity was decreased(P<0.05).Conclusion:Overexpression of miR-217 can reduce the activity of NSCLC cell A549,inhibit the expression of PD-L1,activate CD8+T cells in tumor microenvironment,and then inhibit immune es-cape,which may play a role by targeting ERK2.
8.Influence of gender on prognosis of atrial fibrillation patients after left atrial appendage occlusion
Liping LIU ; Xiang XU ; Chen WAN ; Feng LIU ; Qing YAO ; Binbin WANG ; Wen YAN ; Ling SONG ; Zhiyuan SONG ; Huakang LI
Journal of Army Medical University 2024;46(15):1797-1802
Objective To explore the influence of gender on the prognosis of patients with atrial fibrillation(AF)undergoing left atrial appendage occlusion(LAAO).Methods All non-valvular AF patients who were admitted in our hospital and underwent LAAO from August 2014 to August 2021 were enrolled and grouped according to gender.Their general information,including gender,age,comorbid underlying diseases,and results of transthoracic echocardiography and transesophageal echocardiography(TEE)were collected.The incidences of device-related thrombosis(DRT),pericardial tamponade,stroke,bleeding,hospitalization for heart failure,and cardiac death were recorded during follow-up.The influence of gender on the prognosis of these patients was analyzed.Results There were totally 673 patients with non-valvular AF were enrolled,including 366 males and 307 females,at a mean age of 68.2±9.4 years.When compared with the male patients,the female ones had a higher CHA2DS2-VASc score(P<0.01),but smaller proportions of history of stroke,average compression ratio of occluders,and incidence of residual shunt(<3 mm)after occlusion(P<0.05).In 45~60 d after surgery,TEE revealed that there were 17 cases of DRT,including 8 males(2.2%)and 9 females(2.9%),though without statistical difference between the groups.Among the 17 DRT cases,1 experienced stroke,and the incidence of stroke was 5.9%in those with DRT and 0.5%without.There were 4 cases of postoperative pericardial tamponade,including 1 in the male group and 3 in the female group(no significant difference),and all of them were improved after pericardial puncture and fluid extraction.During the follow-up period of 40.2±20.5 months,no obvious differences were observed between the 2 groups in terms of stroke,bleeding,hospitalization for heart failure,and cardiogenic death.Conclusion Gender shows no significant effect on the prognosis of patients with non-valvular AF after LAAO.
9.Application of low negative pressure liposuction combined with bipolar radiofrequency in repairing facial fat overfilling
Lei YI ; Xiang LIU ; Weifeng PAN ; Yue MAI ; Min YIN ; Shanshan WU ; Miaomiao LI ; Liping YI ; Changqing YAN
Chinese Journal of Medical Aesthetics and Cosmetology 2024;30(3):267-271
Objective:To investigate the safety and efficacy of low negative pressure fat suction combined with bipolar radiofrequency in repairing facial fat overfilling.Methods:A total of 29 patients with facial fat overfilling underwent low negative pressure fat suction combined with bipolar radiofrequency between February 2022 and October 2023 in Changsha My Like Medical Cosmetology Hospital. All patients were female. The mean age was 35.7 years (range, 25-51 years) and the mean body mass index was 20.3 (range, 16.8-24.3 kg/cm 2). The mean time after autologous fat transplantation was 53.4 months (range, 19-96 months). Postoperative patient satisfaction surveys were conducted, and 2 independent doctors evaluated clinical effect preoperative and postoperative photographs at 3-6 months postoperatively. Results:There were 29 cases (100%) underwent liposuction in the pre-zygomatic region, and the amount of fat was 4.1-12.6 (7.95±1.85) ml. There were 4 cases (13.8%) underwent liposuction in the forehead, and the amount of fat was 1.8-5.2 (2.75±0.50) ml. There were 7 cases (24.1%) underwent liposuction in the temporal region, and the amount of fat was 2.8-6.5 (3.86±1.07) ml. There were 8 cases (27.6%) underwent liposuction in the cheek, and the amount of fat was 5.2-10.5 (7.25±2.12) ml. There were 18 cases (62.1%) underwent liposuction in the perioral region, and the amount of fat was 3.7-9.5 (6.33±1.28) ml. The energy delivered by bipolar radiofrequency was 3.3-10.2 (5.71±2.27) KJ. 82.8% of patients were satisfied with their postoperative effect (24/29 patients). 86.2% of doctors were satisfied with the postoperative effect (25/29 patients). Two out of 29 patients (6.9%) developed irregularity by liposuction.Conclusions:Low negative pressure liposuction combined with bipolar radiofrequency can effectively reduce the fat, narrow the tissue gap and improve facial sagging, which is an effective method for repairing facial fat overfilling.
10.Efficacy and safety of microneedle injection of extracellular vesicles from mesenchymal stem cells in treatment of melasma
Liping YI ; Yue MAI ; Min YIN ; Shanshan WU ; Jiawei HE ; Miaomiao LI ; Lei YI ; Shuaihua LI ; Huan ZHOU ; Peihui LI ; Shan YIN ; Qilei HE ; Jia ZHOU ; Changqing YAN ; Xiang LIU
Chinese Journal of Medical Aesthetics and Cosmetology 2024;30(6):536-540
Objective:To explore the effect and safety of mesenchymal stem cell exosome microneedle introduction in the treatment of melasma.Methods:Thirty cases of female patients with stable melasma in the Department of Dermatology, Changsha Meilai Medical Beauty Hospital, aged (36±5) years and with a disease duration of (42.4±20.7) months, from July 2021 to July 2022, were retrospectively included. According to Fitzpatrick skin typing, 23 cases of type Ⅲ and 7 cases of type Ⅳ were included. All patients were locally anesthetized with lidocaine cream for 30 min, and rolled with a 0.5 mm needle in a zigzag pattern with even force, in the order of the right cheek, the left cheek, the forehead, the nose, the mandible, and the upper lip. During the rolling process, 3 ml of MSC exosome medical liquid wound dressing was applied to the facial skin, and after it was fully absorbed, exosome was locally readministered in the area of melasma. Treatment ended with a slight redness at the site of application. 1 MSC exosome wound dressing was appllied as a cold compress for 15 min after treatment. Treatment was given once every 2 weeks for 6 consecutive sessions. All the patients were followed up at 4 and 12 weeks after the last session, and the area and severity index of melasma (MASI) were scored before and after the treatment, the clinical efficiency and patient satisfaction rate and the incidence of adverse reactions were also counted.Results:At 4 and 12 weeks after the end of treatment, the skin color of all 30 patients was brighter than that before treatment, and no recurrence of melasma symptoms seen. At 12 weeks after the end of treatment, the decrease rate of MASI score was 66.1%, among which the decrease rate of MASI score in patients with type Ⅲ melasma was 63.9%, and the decrease rate of MASI score in patients with type Ⅳ melasma was 63.9%. Among the 30 patients, 1 case was cured, 25 cases showed obvious improved, 4 cases were improved, and no cases were ineffective, with an effective rate of 86.7% (26/30). Five patients were very satisfied, 18 patients were satisfied, 6 patients were generally satisfied, and 1 patient was dissatisfied; the patient satisfaction rate was 76.7% (23/30). No serious adverse reactions occurred in all patients.Conclusions:MSC exosome microneedle introduction is safe and effective in the treatment of melasma without serious adverse reactions.

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