1.Randomized Controlled Study of Baoshen Prescription in Treating Stage Ⅳ Diabetic Nephropathy in Patients with Syndromes of Qi-Yin Deficiency and Kidney Collateral Stasis and Obstruction
Yiting QIU ; Shuangshuang HONG ; Zhiqiu LIU ; Xinru SUN ; Yuefen WANG ; Mengchao LIU ; Wenjing ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):124-131
ObjectiveTo evaluate the clinical efficacy and safety of Baoshen prescription in the treatment of stage Ⅳ diabetic nephropathy (DN) in the patients with syndromes of Qi-Yin deficiency and kidney collateral stasis and obstruction, and to explore the mechanism of this prescription delaying the disease progression. MethodsA randomized, controlled, double-blind, multicenter clinical trial was conducted, in which 94 stage Ⅳ DN patients with syndromes of Qi-Yin deficiency and kidney collateral stasis and obstruction were randomly assigned into Baoshen prescription and control groups (47 cases). The treatment lasted for 12 weeks. The primary efficacy indicators were mainly renal function indexes, including urine albumin-to-creatinine ratio (UACR), 24-hour urine total protein (24 h-UTP), serum creatinine (SCr), and estimated glomerular filtration rate (eGFR). The secondary efficacy indicators were metabolic memory of hyperglycemia, podocyte epithelial-to-mesenchymal transdifferentiation-related indexes, and TCM syndrome score. ResultsAfter 12 weeks of treatment, the Baoshen prescription group showed lowered levels of advanced glycation end products (lgAGEs), connective tissue growth factor (CTGF), type Ⅳ collagen (Col-Ⅳ), receptor of AGEs (RAGE), urinary fibroblast-specific protein-1 (FSP-1), UACR, 24 h-UTP, and glycated hemoglobin (HbAlc) (P<0.05), and an upward trend of miR-21 mRNA. The control group showed elevated levels of SCr and UREA and lowered levels of urinary FSP-1, eGFR, and HbAlc (P<0.05). After treatment, the Baoshen prescription group had lower levels of lgAGEs, CTGF, urinary FSP-1, SCr, UACR, and 24 h-UTP and higher levels of Col-Ⅳ and eGFR than the control group (P<0.05). In addition, the Baoshen prescription group showed statistically significant differences in SCr, eGFR, UACR, and 24 h-UTP before and after treatment (P<0.05). ConclusionBaoshen prescription can effectively improve the renal function, reduce the urinary protein level, and alleviate clinical symptoms in stage Ⅳ DN patients with syndromes of Qi-Yin deficiency and kidney collateral stasis and obstruction. The mechanism may be related to the metabolic memory of hyperglycemia and epithelial-to-mesenchymal transdifferentiation of podocytes.
2.Protective Effect of Taohong Siwutang on Cerebral Ischemia-reperfusion Injury Based on A1/A2 Phenotype Transformation of Astrocytes Mediated by JAK2/STAT3 Pathway
Huifang WANG ; Xinru CHEN ; Mengyuan CHEN ; Xian ZHOU ; Lan HAN ; Weidong CHEN ; Zhaojie JI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):25-34
ObjectiveTo investigate whether the effect of Taohong Siwutang on cerebral ischemia-reperfusion (CIRI) injury in rats is related to the regulation of astrocyte polarization and explore the related mechanism. MethodsEighty-four male SD rats were randomly assigned to the following groups: A sham operation group, a model group, Taohong Siwutang treatment groups (low dose, medium dose, and high dose), ligustrazine phosphate tablet (LPT) group, and AG490 group. All groups, except for the sham operation group, underwent middle cerebral artery occlusion/reperfusion (MCAO/R) modeling and were treated for seven days. The neurological impairment was evaluated using the Longa score. The volume of cerebral infarction was assessed through 2,3,5-triphenyltetrazolium chloride (TTC) staining. Real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) and Western blot analyses were performed to analyze the mRNA and protein expression levels of cortical complement 3 (C3), S100 calcium-binding protein A10 (S100A10), Janus kinase 2 (JAK2), and signal transducer and activator of transcription 3 (STAT3). Additionally, protein expression levels of vascular endothelial growth factor-A (VEGF-A) were assessed, and the mRNA expression levels of inflammatory factors, including interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α), were evaluated. Glial fibrillary acidic protein (GFAP) and C3, S100A10 and Co-localization was detected via immunofluorescence double staining. Lastly, VEGF expression levels were measured using enzyme-linked immunosorbent assay (ELISA). ResultsCompared with the sham operation group, the model group showed a significant increase in cerebral infarction volume and neurological impairment (P<0.01). C3 protein levels were elevated, while S100A10 levels were decreased. Pathway-related markers were significantly upregulated (P<0.05, P<0.01), and VEGF-A protein levels were significantly reduced (P<0.01). The mRNA expression of inflammatory factors was significantly upregulated (P<0.01). Co-localization analysis showed significantly increased GFAP and C3 fluorescence intensity (P<0.01) and greatly decreased GFAP and S100A10 fluorescence intensity (P<0.01). Additionally, VEGF content was significantly elevated (P<0.01). Compared with the model group, medium- and high-dose Taohong Siwutang and LPT groups exhibited a significant reduction in cerebral infarction volume and neurological impairment (P<0.01). Groups treated with low, medium, and high doses of Taohong Siwutang and LPT group exhibited a decrease in C3 protein expression levels and an increase in S100A10 expression levels (P<0.01). In the high-dose Taohong Siwutang and AG490 groups, both protein and mRNA expression of C3 and pathway-related markers were significantly downregulated (P<0.05, P<0.01), while S100A10 expression and VEGF-A protein levels were significantly increased (P<0.01). Additionally, the mRNA expression levels of inflammatory factors were significantly reduced (P<0.01). The co-localization fluorescence intensity of GFAP and C3 significantly decreased (P<0.01), while that of GFAP and S100A10 greatly increased (P<0.01). Furthermore, VEGF content exhibited a marked elevation (P<0.01). ConclusionTaohong Siwutang exerts a protective effect in rats with cerebral CIRI injury. The underlying mechanism is associated with the downregulation of the JAK2/STAT3 signaling pathway, promotion of A2-type astrocyte polarization, reduction of inflammatory factor release, and enhancement of VEGF production.
3.Protective Effect of Taohong Siwutang on Cerebral Ischemia-reperfusion Injury Based on A1/A2 Phenotype Transformation of Astrocytes Mediated by JAK2/STAT3 Pathway
Huifang WANG ; Xinru CHEN ; Mengyuan CHEN ; Xian ZHOU ; Lan HAN ; Weidong CHEN ; Zhaojie JI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):25-34
ObjectiveTo investigate whether the effect of Taohong Siwutang on cerebral ischemia-reperfusion (CIRI) injury in rats is related to the regulation of astrocyte polarization and explore the related mechanism. MethodsEighty-four male SD rats were randomly assigned to the following groups: A sham operation group, a model group, Taohong Siwutang treatment groups (low dose, medium dose, and high dose), ligustrazine phosphate tablet (LPT) group, and AG490 group. All groups, except for the sham operation group, underwent middle cerebral artery occlusion/reperfusion (MCAO/R) modeling and were treated for seven days. The neurological impairment was evaluated using the Longa score. The volume of cerebral infarction was assessed through 2,3,5-triphenyltetrazolium chloride (TTC) staining. Real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) and Western blot analyses were performed to analyze the mRNA and protein expression levels of cortical complement 3 (C3), S100 calcium-binding protein A10 (S100A10), Janus kinase 2 (JAK2), and signal transducer and activator of transcription 3 (STAT3). Additionally, protein expression levels of vascular endothelial growth factor-A (VEGF-A) were assessed, and the mRNA expression levels of inflammatory factors, including interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α), were evaluated. Glial fibrillary acidic protein (GFAP) and C3, S100A10 and Co-localization was detected via immunofluorescence double staining. Lastly, VEGF expression levels were measured using enzyme-linked immunosorbent assay (ELISA). ResultsCompared with the sham operation group, the model group showed a significant increase in cerebral infarction volume and neurological impairment (P<0.01). C3 protein levels were elevated, while S100A10 levels were decreased. Pathway-related markers were significantly upregulated (P<0.05, P<0.01), and VEGF-A protein levels were significantly reduced (P<0.01). The mRNA expression of inflammatory factors was significantly upregulated (P<0.01). Co-localization analysis showed significantly increased GFAP and C3 fluorescence intensity (P<0.01) and greatly decreased GFAP and S100A10 fluorescence intensity (P<0.01). Additionally, VEGF content was significantly elevated (P<0.01). Compared with the model group, medium- and high-dose Taohong Siwutang and LPT groups exhibited a significant reduction in cerebral infarction volume and neurological impairment (P<0.01). Groups treated with low, medium, and high doses of Taohong Siwutang and LPT group exhibited a decrease in C3 protein expression levels and an increase in S100A10 expression levels (P<0.01). In the high-dose Taohong Siwutang and AG490 groups, both protein and mRNA expression of C3 and pathway-related markers were significantly downregulated (P<0.05, P<0.01), while S100A10 expression and VEGF-A protein levels were significantly increased (P<0.01). Additionally, the mRNA expression levels of inflammatory factors were significantly reduced (P<0.01). The co-localization fluorescence intensity of GFAP and C3 significantly decreased (P<0.01), while that of GFAP and S100A10 greatly increased (P<0.01). Furthermore, VEGF content exhibited a marked elevation (P<0.01). ConclusionTaohong Siwutang exerts a protective effect in rats with cerebral CIRI injury. The underlying mechanism is associated with the downregulation of the JAK2/STAT3 signaling pathway, promotion of A2-type astrocyte polarization, reduction of inflammatory factor release, and enhancement of VEGF production.
4.Mechanism of Congrong Zonggan Capsules in Improving Neuroinflammation and Cognitive Impairment in 5×FAD Mice Based on NF-κB/NLRP3 Signaling Pathway
Yanru ZHOU ; Xinru GU ; Yuru LIU ; Shun ZHANG ; Yaozhong LYU ; Zhenzhong WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(10):130-138
ObjectiveTo investigate the effects of Congrong Zonggan capsules (CRZG) on cognitive impairment in the Alzheimer's disease (AD) model of mice and its related mechanisms. MethodsSPF grade 4-week-old 5×FAD mice were divided into a model group, low-dose CRZG (0.819 g·kg-1) and high-dose CRZG (1.638 g·kg-1) groups, and Donepezilepezil hydrochloride group (2 mg·kg-1), with eight mice in each group. Eight C57 mice with the same background were set as the normal group. After one week of adaptive feeding, mice were orally administered continuously for six months. On the 5th month of drug administration, Y maze, new object recognition, and Morris water maze tests were conducted separately. After administration, mouse brain tissue was taken, and the levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in brain tissue were detected by enzyme-linked immunosorbent assay (ELISA). Immunofluorescence (IF) was used to detect the expression of small glial cell markers Iba1, astrocyte markers GFAP, and amyloid protein 1-42 (Aβ1-42) in the hippocampus of the brain tissue. The hematoxylin-eosin (HE) staining was used to detect pathological changes in the hippocampus of brain tissue. Western blot was used to detect the expression of nuclear factor-κB (NF-κB) p65, NOD-like receptor protein 3 (NLRP3), cleaved Caspase-1, apoptosis-associated speck-like protein containing a CARD (ASC), and other proteins in the brain tissue. ResultsCompared with those in the normal group, the mice in the model group had obvious cognitive impairment. The spontaneous alternation rate of the Y maze was decreased, and the discrimination index of novel object recognition was decreased significantly (P<0.01). The escape latency in the water maze was shortened significantly (P<0.01). The contents of IL-6 and TNF-α in brain tissue were increased. The fluorescence levels of Iba1 and Aβ1-42 in the hippocampus were significantly increased (P<0.01). There was a significant increase in neuronal lesions, neuronal atrophy, loose arrangement of tissue structure, and abnormal erythrocyte aggregation in the hippocampus. The protein expressions of p-NF-κB p65/NF-κB p65, cleaved Caspase-1, ASC, IL-6, and IL-1β were significantly increased (P<0.05, P<0.01). Compared with the model group, the spontaneous alternation rate and discrimination index of the high-dose CRZG group were increased significantly (P<0.01), and the escape latency was shortened significantly (P<0.05, P<0.01). The content of IL-6 decreased in the brain, and that of TNF-α dropped significantly (P<0.01). The expression of Iba1 protein and Aβ1-42 in the hippocampus decreased significantly (P<0.05, P<0.01). The hippocampal neurons were densely arranged, and the pyramidal nuclei were clear and centered. The abnormal aggregation of red blood cells was alleviated. The value of p-NF-κB/NF-κB proteins and the expression of ASC, cleaved Caspase-1, IL-6, and IL-1β were significantly decreased (P<0.05, P<0.01). ConclusionCRZG can effectively improve cognitive impairment in 5×FAD mice with Alzheimer's disease, and its mechanism may be related to the regulation of the NF-κB/NLRP3 pathway to reduce the abnormal activation of microglia and inhibit neuroinflammation.
5.The Current Status and Prospects of the Application of Digital Technology in the Field of Pharmacovigilance of Rare Diseases
Ying CAO ; Xinru LIU ; Shengfeng WANG ; Lin ZHUO
JOURNAL OF RARE DISEASES 2025;4(1):22-29
To summarize the current status in the application of digital and intelligent technologies in the field of pharmacovigilance and to provide reference to the selection and development of methods for pharmacovigilance of rare diseases. Searched five major databases-CNKI, WANFANG, VIP, PubMed, and Embase, selected and the data of application of digital technology in the field of drug vigilance for rare diseases, extracted relevant information and conducted a systematic review. The application of digital technology in drug surveillance has not yet been used in the special field of rare diseases. Relevant case studies are insufficient. Two major challenges need to be addressed. One is the insufficient data sources and the other is technical limitations. Based on the characteristics of drugs for rare diseases, this paper identifies data sources and intelligent technologies suitable for the field of drug vigilance for rare disease, proposes direction for potential development in the future, and makes targeted suggestions.
6.Association analyses of early medication clocking-in trajectory with smart tools and treatment outcome in pulmonary tuberculosis patients
Chunhua XU ; Zheyuan WU ; Yong WU ; Qing WANG ; Zichun WANG ; Nan QIN ; Xinru LI ; Yucong YAO ; Kehua YI ; Yi HU
Shanghai Journal of Preventive Medicine 2025;37(3):210-214
ObjectiveTo construct a group-based trajectory model (GBTM) for early medication adherence check-in, and to analyze the relationship between different trajectories and treatment outcomes in tuberculosis patients using data that were generated from smart tools for monitoring their medication adherence and check-in. MethodsFrom October 1, 2022 to September 30, 2023, a total of 163 pulmonary tuberculosis patients diagnosed in Fengxian District were selected as the study subjects. The GBTM was utilized to analyze the weekly active check-in trajectories of the subjects during the first 4 weeks and establish different trajectory groups. The χ² tests were employed to compare the differences between groups and logistic regression analysis was conducted to explore the relationship between different trajectory groups and treatment outcomes. ResultsA total of four groups were generated by GBTM analyses, of which a low level of punch card was maintained in group A, 6% of the drug users increased rapidly from a low level in group B, 17% of drug users increased gradually from a low level in group C, and 18% of drug users maintained a high level of punch card in group D. The trajectory group was divided into two groups according to homogeneity, namely the low level medication punch card group (group A) and the high level medication punch card group (group B, group C, and group D). The results of multivariate logistic regression analyses revealed that low-level medication check-in (OR=3.250, 95%CI: 1.089‒9.696), increasing age (OR=1.030, 95%CI: 1.004‒1.056), and not undergoing sputum examination at the end of the fifth month (OR=2.746, 95%CI: 1.090‒7.009) were significantly associated with poor treatment outcomes. ConclusionThe medication check-in trajectory of pulmonary tuberculosis patients within the first 4 weeks is correlated with adverse outcomes, or namely consistent low-level medication adherence check-ins are associated with poor treatment outcomes, while high-level medication adherence check-ins are associated with a lower incidence of adverse outcomes.
7.Research Progress on Signaling Pathways Related to Treatment of Diabetic Cognitive Dysfunction with Traditional Chinese Medicine: A Review
Xinrui LI ; Yuqing WANG ; Ming SU ; Xinru SUN ; Hui ZHANG ; Kangning XIAO ; Shanxin LIU ; Xinjun ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(19):225-232
Diabetic cognitive dysfunction (DCD) is one of the complications of diabetes, which is characterized by impaired brain structure and progressively decreased learning and memory ability. With the increasing incidence of diabetes worldwide, DCD has become a serious medical and social problem. However, its pathophysiological mechanisms are not well understood. The occurrence and development of DCD involve multiple pathological links and mechanisms, and the prevention and treatment require multi-link and multi-target therapeutic measures. At present, there is no specific drug to prevent or improve DCD. Hypoglycemic drugs such as metformin and vigagliptin or anti-dementia drug including Donepezil are commonly used in clinical treatment to delay the occurrence and progression of cognitive dysfunction, but these drugs have a single target and obvious side effects. Traditional Chinese medicine has a long history in the prevention and treatment of diabetes and central cognitive diseases, and it has many unique advantages such as multiple components, multiple targets, side effects, and low price. A large number of studies have confirmed that traditional Chinese medicine has a significant prevention and treatment effect on DCD, which can improve insulin resistance, synaptic dysfunction, inflammation, oxidative stress, endoplasmic reticulum stress, and neuronal apoptosis by regulating phosphatidylin-ositol 3-kinase (PI3K)/protein kinase B (Akt), advanced glycation end products (AGEs)/advanced glycation end products receptor (RAGE)/nuclear transcription factor-κB (NF-κB), NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome, and endoplasmic reticulum stress and nuclear factor E2 related factor 2 (Nrf2)/antioxidant response element (ARE) signaling pathways. This article reviewed the effects and related mechanisms of traditional Chinese medicine on DCD in recent years, so as to provide a reference for the prevention and treatment of DCD by traditional Chinese medicine.
8.Pharmacokinetics of Purine Benzamides PLB-E and PLB-P in Rats
Xinru WANG ; Xi MAI ; Zhiwang ZHOU ; Lina HONG ; Lihua FENG
Chinese Journal of Modern Applied Pharmacy 2024;41(12):1615-1620
OBJECTIVE
To establish a method for the determination of the concentrations of anti-tumor lead compounds purine benzamides PLB-E and PLB-P in rat plasma by HPLC and apply to study pharmacokinetics.
METHODS
The established HPLC was used to determine the plasma drug concentrations of rats at different time points after intravenous administration of 5, 10, 20 mg·kg–1 (low, medium, high doses) of PLB-E and PLB-P, and the pharmacokinetic parameters of each compound were calculated using DAS 3.3.0 software.
RESULTS
PLB-E and PLB-P had good linear relationship in the range of 2–120, 3–60 μg·mL–1, respectively(r2>0.999). The RSD of inter-day and intra-day precision were <15%. The extraction recoveries were 87.48%–92.84% and 88.24%–92.60%, respectively. The main pharmacokinetic parameters of PLB-E and PLB-P after a single intravenous injection of 5, 10, 20 mg·kg–1 were as follows, the average Cmax was (20.30±2.39), (40.63±3.40), (63.62±7.55)mg·L–1 and (13.21±1.40), (24.87±1.33), (32.83±0.65)mg·L–1, respectively. AUC(0-∞) were (104.67±48.39), (177.42±84.11), (194.32±91.48)mg·h·L–1 and (106.75±54.21), (179.90±93.59), (253.56±126.17)mg·h·L–1, respectively. Tmax of each dose was 0.08 h.
CONCLUSION
The HPLC method established in this study meets the requirements for the determination of biological samples through methodological verification, which is applicable to the determination of the concentration of PLB-E and PLB-P in rat plasma and the pharmacokinetic study. The pharmacokinetic process of PLB-E and PLB-P in rats conforms to the two-compartment model, and conforms to the nonlinear kinetic elimination.
9.Discussion on Differentiation and Treatment of Sudden Hearing Loss by Traditional Chinese Medicine Based on the Classification of Hearing Curve
Xinru WANG ; Yang LI ; Jiajia ZHANG ; Yan MENG ; Chongyang ZHANG ; Xueshi DI ; Zhiwei FENG ; Junjie LIANG ; Peng BAI
Journal of Traditional Chinese Medicine 2024;65(11):1126-1131
Pure-tone audiometry can be performed to evaluate the type and degree of hearing loss, whose results can be divided into four types including low-frequency descending, high-frequency descending, flat descending and total deafness. The low-frequency descending type of sudden hearing loss (SHL) is more likely to be spleen deficiency and dampness exuberance, the high-frequency descending type is often due to yin deficiency of liver and kidney, the flat descending type is commonly associated with qi and blood depletion, and the type of total deafness is often linked to blood stasis. Our team has further developed a comprehensive diagnostic and therapeutic approach for SHL, emphasizing "the integration of disease and syndrome, the combination of acupuncture and herbal medicine, and dynamically administering treatment". Firstly, it advocates integrating disease diagnosis with syndrome differentiation. Secondly, it recommends combining acupuncture and herbal medicine, with local acupoints such as Ermen (TE 21), Tinggong (SI 19), Tinghui (GB 2), and Yifeng (TE 17) used to unblock the auditory orifice, and herbal prescriptions tailored to the hearing curve patterns. For the low-frequency descending type, it is recommended to fortify the spleen and percolate dampness by taking distal points of spleen channel and stomach channel and using Shenling Baizhu Powder (参苓白术散). For the high-frequency descending type, the method of nourishing kidney and calming liver is recommended, using distal points of kidney and liver channels and taking Erlong Zuoci Pills (耳聋左慈丸). Regarding the flat descending type, tonifying qi and nourishing blood is advised, for which acupoints of Conception Vessel, spleen, stomach and large intestine channels can be needled, and Yiqi Congming Decoction (益气聪明汤) can be administered. For the total deafness type, it is recommended to activate blood and dissipate stasis, often with Xuehai (SP 10) and Geshu (BL 17) needled and Tongqiao Huoxue Decoction (通窍活血汤) administered. All these are conducted to treat the root and branch simultaneously. At the same time, it emphasizes the need to consider complex syndrome presentations and disease progression, dynamically analyze the disease causes and mechanisms, and adjust treatment according to the changing syndromes. In conclusion, this article is expected to inspire clinical diagnosis and treatment of SHL.
10.Analysis of learning curve for robot-assisted laparoscopic radical prostatectomy: a single operator’s initial experience in 65 cases
Ruihang ZHANG ; Jianwen HUANG ; Ying WANG ; Xinru ZHANG ; Lujie SONG ; Qiang FU ; Yinglong SA
Journal of Modern Urology 2024;29(3):219-223
【Objective】 To explore the learning curve of single-surgeon robot-assisted laparoscopic radical prostatectomy (RARP), which provides a reference for physicians who intend to carry out RARP. 【Methods】 The clinical data of 65 prostate cancer patients who underwent RARP in our hospital during Sep.2022 and Dec.2023 were retrospectively analyzed.The patients’ median age was 67.5(58.1-82.4) years, median total prostate-specific antigen (PSA) was 15.6 (6.7-98.4) ng/mL, median body mass index (BMI) was 20.8(17.4-27.3) and preoperative clinical stage of tumor was T2aN0M0-T3bN1M0.The cumulative sum (CUSUM) method was used to fit the learning curves of machine installation time and operation time.According to the inflection points, the learning curves were divided into different learning stages, and the clinical data of patients at different learning stages were compared. 【Results】 The learning curve of RARP was 12 cases.The 65 cases were divided into three stages: 1st-12th cases in the learning stage, 13rd-43rd cases in the mastery stage, and 44th-65th cases in the proficiency stage.With the increase of the number of surgical cases, the median operation time [191(100-360) min vs. 116(83-165) min vs. 90(75-105) min] and median intraoperative blood loss [403(180-900) mL vs. 236(180-305) mL vs. 94(30-200) mL] in the three stages showed a gradual downward trend (P<0.05).The median machines installation time of the learning stage was significantly longer than that in the mastery stage and the proficiency stage [25(21-28) min vs. 12(11-15) min vs. 12(11-14) min] (P<0.05).The positive surgical marginrate (PSM) in the learning stage was significantly higher than that in the mastery stage and proficiency stage (41.7% vs.22.6% vs.22.7%) (P<0.05). 【Conclusion】 For surgeons with rich experience in traditional laparoscopic surgery, the learning curve of RARP is about 12 cases, and after 43 cases, the operation time and intraoperative blood loss can be further reduced.


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