1.Progress in clinical application of anti-CD20 monoclonal antibody in refractory nephrotic syndrome in children
Jinbo XIANG ; Guanguo SHEN ; Zheng LI ; Xiaoyan HU ; Tingting CAO ; Ziran XU ; Ting DING ; Jingbo LI
China Pharmacy 2025;36(16):2078-2084
Anti-CD20 monoclonal antibodies for the treatment of refractory nephrotic syndrome (RNS) in children. The first- generation rituximab is the most widely used in clinical practice; it shows definite efficacy in children with RNS, is recommended by guidelines, particularly for achieving a high remission rate in minimal change nephrosis, and can significantly reduce the cumulative use of glucocorticoids and immunosuppressants. The second-generation ofatumumab has potential as an alternative treatment for patients who are intolerant or resistant to rituximab, while the third-generation obinutuzumab has shown efficacy in complex cases such as rituximab resistance or post-transplant recurrence. However, there is still controversy regarding the optimization of rituximab treatment dosage and whether ofatumumab and obinutuzumab offer greater advantages than rituximab for the treatment of RNS in children. The most common adverse reaction induced by anti-CD20 monoclonal antibodies is infusion reactions, and long-term adverse events mainly include increased risks of sustained immunosuppression and infections. Rituximab has significant economic advantages for the treatment of RNS, but additional pharmacoeconomic research based on China’s healthcare environment is needed to evaluate the cost-effectiveness of ofatumumab and obinutuzumab in this population. Given that the current use of ofatumumab and obinutuzumab in this field is considered off-label use, clinical application should only proceed after a rigorous evaluation of the patient’s benefits and risks.
2.Application of precise-guided temporary fixation assistive devices in proximal femoral nail antirotation fixation for femoral intertrochanteric fractures.
Wanming QU ; Hongbin ZHOU ; Xiangwei ZHANG ; Qinghua XIANG ; Wenbin SHEN ; Xin YU ; Wenyao CHEN ; Xinzhi LI
Chinese Journal of Reparative and Reconstructive Surgery 2025;39(6):680-685
OBJECTIVE:
To investigate the feasibility and effectiveness of precise-guided temporary fixation assistive devices in assisting the main nail guide pin placement and precise temporary fixation in proximal femoral nail antirotation (PFNA) internal fixation of femoral intertrochanteric fractures.
METHODS:
A prospective randomized controlled study was conducted to analyze the clinical data of 60 patients with femoral intertrochanteric fractures over 65 years old who met the selection criteria between January 2020 and June 2022 and were treated with PFNA internal fixation. The patients were randomly divided into the trial group (auxiliary device guided main nail guide pin placement and temporary fixation) and the control group (conventional treatment), with 30 cases in each group. There was no significant difference in baseline data such as gender, age, cause of injury, time from injury to operation, fracture side, AO/Orthopaedic Trauma Association (AO/OTA) classification, and combined medical diseases between the two groups ( P>0.05). The operation time, times of main nail guide pin placement, intraoperative fluoroscopy frequency, intraoperative blood loss, and perioperative blood transfusion were recorded and compared between the two groups. The quality of fracture reduction was evaluated by CHANG Shimin et al criteria. Harris score was used to evaluate the hip function at 1 year after operation.
RESULTS:
In the trial group, 2 temporary fixation needles were successfully placed 2-5 times, including 2 times in 13 cases (43.3%), 3 times in 8 cases (26.7%), 4 times in 7 cases (23.3%), and 5 times in 2 cases (6.7%). The operation time, times of main nail guide pin placement, intraoperative fluoroscopy frequency, and intraoperative blood loss in the trial group were significantly less than those in the control group, and the reduction quality score was significantly better than that in the control group ( P<0.05). There was no significant difference in perioperative blood transfusion between the two groups ( P>0.05). All patients were followed up 12-19 months (mean, 15 months). There was no complication such as incision infection, deep vein thrombosis, or internal fixation loosening. At 1 year after operation, the Harris score of the affected hip joint in the trial group was significantly higher than that in the control group ( P<0.05).
CONCLUSION
The technique of main nail guide pin placement and temporary fixation under the guidance of auxiliary devices in PFNA internal fixation can achieve faster insertion of the main nail guide pin, accurate temporary fixation to maintain reduction, and avoid the subsequent operation space, so as to improve the effectiveness.
Humans
;
Bone Nails
;
Male
;
Female
;
Hip Fractures/surgery*
;
Fracture Fixation, Intramedullary/instrumentation*
;
Aged
;
Prospective Studies
;
Operative Time
;
Treatment Outcome
;
Fracture Fixation, Internal/instrumentation*
;
Aged, 80 and over
3.Predictive value of NUF2 for prognosis and immunotherapy responses in pan-cancer.
Yaobin WANG ; Liuyan CHEN ; Yiling LUO ; Jiqing SHEN ; Sufang ZHOU
Journal of Southern Medical University 2025;45(1):137-149
OBJECTIVES:
To investigate the association of NUF2 expression with tumor prognosis and its regulatory role in tumor microenvironment.
METHODS:
We analyzed NUF2 expression, its prognostic value, and is immune-related functions across different cancer types using datasets from the Human Protein Atlas (HPA), TCGA, GTEx, CCLE, and TIMER. RT-qPCR, Western blotting, and immunohistochemistry were used to detect NUF2 expression in liver cancer cell lines and tissue and blood samples from patients with liver cancer. GO, KEGG, and GSEA analyses were conducted to explore the molecular mechanisms of NUF2 and its related genes, and a competitive endogenous RNA (ceRNA) network for NUF2 in liver cancer was constructed.
RESULTS:
NUF2 expression was upregulated in the tumor tissues of 27 cancers and was associated with clinical stages in several cancers. High NUF2 expressions were correlated with poor overall survival, disease-specific survival, progression-free survival, and disease-free survival of cancer patients. NUF2 expression levels were positively correlated with tumor mutational burden, microsatellite instability, infiltrating immune cells, immune cell marker genes and immune checkpoint genes in different cancers. RT-qPCR, Western blotting, and immunohistochemistry confirmed that NUF2 expression was upregulated in liver cancer cell lines and tumor tissues and blood samples of liver cancer patients, and was decreased significantly after operation. GO, KEGG and GSEA analyses indicated that NUF2 was involved in chromosome segregation and cell cycle and was associated with glycine, serine and threonine metabolism.
CONCLUSIONS
NUF2 expression is upregulated in 27 cancers and is associated with clinical stage and poor prognosis in some malignancies. NUF2 expression is closely correlated with immune cell infiltration in different cancers, suggesting its potential value for predicting immunotherapy response in these cancers.
Humans
;
Prognosis
;
Immunotherapy
;
Tumor Microenvironment
;
Liver Neoplasms/metabolism*
;
Cell Line, Tumor
;
Neoplasms/genetics*
;
Gene Expression Regulation, Neoplastic
;
Biomarkers, Tumor/genetics*
4.Comparison of demographic and clinical characteristics of bipolar Ⅰ disorder and bipolar Ⅱ disorder
Li ZHOU ; Yiling XIE ; Tingting ZHANG ; Yueqin HUANG ; Liang ZHOU ; Yan LIU ; Bo LIU ; Jie ZHANG ; Yuandong GONG ; Zhongcai LI ; Bi LI ; Zhipeng LI ; Qingyuan ZENG ; Zonglin SHEN ; Wenming CHEN ; Zhaorui LIU ; Jin LU
Chinese Mental Health Journal 2024;38(1):33-41
Objective:To compare demographic characteristics,clinical characteristics,therapeutic characteris-tics and physiological indicators of patients with bipolar Ⅰ disorder and bipolar Ⅱ disorder.Methods:A total of 381 patients with bipolar disorder(BD)diagnosed by the Diagnostic and Statistical Manual of Mental Disorders 5 th Edi-tion(DSM-5)were selected,including 302 patients with BD-Ⅰ(79.27%),74 patients with BD-Ⅱ(19.42%)and 5 patients with other specific and related disorders(1.31%).Demographic and clinical characteristics were collected with self-designed clinical information questionnaire.Multivariate logistic regression and multivariate linear regres-sion analysis were used for analysis.Results:Compared with patients with BD-Ⅱ,patients with BD-Ⅰ had more risk to have psychotic features(OR=5.75,95%CI:2.82-11.76),longer disease duration,and more repeated transcra-nial magnetic therapy(OR=3.09,95%CI:1.02-9.35),higher uric acid,total cholesterol and high-density lipo-protein.BD-Ⅰ in Han nationality was more common(OR=11.50,95%CI:1.76-75.30),and had lower education level(OR=10.22,95%CI:1.16-89.77),and less family history of psychosis(OR=2.34,95%CI:1.01-5.42).Conclusion:There are significant differences between BD-Ⅰ and BD-Ⅱ in demographic and clinical charac-teristics,treatment status,and physiological indicators,which could provide clues for exploring the pathogenesis of bipolar disorder.
5.Identification and expression analysis of the YABBY gene family in strawberry.
Tingting YU ; Shurong SHEN ; Yiling XU ; Xinyu WANG ; Yao YU ; Bojun MA ; Xifeng CHEN
Chinese Journal of Biotechnology 2024;40(1):104-121
YABBY proteins are important transcription factors that regulate morphogenesis and organ development in plants. In order to study the YABBY of strawberry, bioinformatic technique were used to identify the YABBY gene families in Fragaria vesca (diploid) and Fragaria×ananassa (octoploid), and then analyze the sequence characters, phylogeny and collinearity of the family members. The RNA-seq data and the quantitative reverse transcription-polymerase chain reaction (qRT-PCR) technique were used to assay the expression patterns of the family members. A green fluorescent protein (GFP) was fused with FvYABBYs and transiently expressed in tobacco leaf cells for the subcellular localization. As the results, six FvYABBY genes and 26 FxaYABBY genes were identified from F. vesca and F.×ananassa, respectively. The FvYABBY genes were grouped into five clades, and five family members were orthologous with AtYABBY genes of Arabidopsis. In F. vesca, all of the FvYABBYs were basically not expressed not expressed in root and receptacle, while FvYABBY1, FvYABBY2, FvYABBY5 and FvYABBY6 were highly expressed in leaf, shoot, flower and achene. In F.×ananassa, FxaYABBY1, FxaYABBY2, FxaYABBY5 and FxaYABBY6 were expressed in achene, and all FxaYABBY were poorly or not expressed in receptacle. Additionally, under the abiotic stresses of low temperature, high salt and drought, the expression of FvYABBY1, FvYABBY3, FvYABBY4 and FvYABBY6 were down-regulated, FvYABBY5 was up-regulated, and FvYABBY2 was up-regulated and then down-regulated. In tobacco leaf cells, the subcellular localization of FvYABBY proteins were in the nucleus. These results provides a foundation for the functional researches of YABBY gene in strawberry.
Fragaria/genetics*
;
Arabidopsis
;
Biological Assay
;
Cold Temperature
;
Computational Biology
6.Role of HIF-1α-glycolytic pathway in propofol-induced attenuation of brain injury in acute sleep-deprived aged rats
Hao QI ; Zhou YOU ; Yiling LI ; Wei SHEN
Chinese Journal of Anesthesiology 2024;44(6):675-681
Objective:To evaluate the role of hypoxia-inducible factor 1α (HIF-1α)-glycolytic pathway in propofol-induced attenuation of brain injury in acute sleep-deprived aged rats.Methods:Forty-eight male SPF-grade healthy Sprague-Dawley rats, aged 20-22 weeks, weighing 500-600 g, were divided into 4 groups ( n=12 each) using a random number table method: control group (Con group), sleep deprivation group (SD group), sleep deprivation + propofol group (SP group), and sleep deprivation + propofol + DMOG group (SPD group). The sleep deprivation model was developed using a sleep deprivation apparatus in rats. At 20 and 3 h before sleep deprivation, 1% propofol at a dose of 0.04 mg/g was intraperitoneally injected in SP group, and 1% propofol at a dose of 0.04 mg/g and HIF-1α activator DMOG at a dose of 0.05 mg/g were intraperitoneally injected in SPD group. Cognitive function was assessed by fear conditioning test and novel object recognition test. After the behavioral testing, the blood and brain tissue samples were collected for determination of blood-brain barrier permeability (by Evans blue staining), apoptosis rate (by TUNEL staining), serum levels of neurofilament light chain protein (NfL) and neuron-specific enolase (NSE), contents of reactive oxygen species (ROS), interleukin-6 (IL-6), inducible nitric oxide synthase (iNOS), lactate and pyruvate (by enzyme-linked immunosorbent assay) and expression of HIF-1α, pyruvate kinase M2 (PKM2), hexokinase 2 (HK2), ionized calcium-binding adaptor molecule 1 (IBA1), and cleaved caspase-3 (by Western blot) and for microscopic examination of pathological changes of the hippocampal tissues. The lactate/pyruvate ratio was calculated. Results:Compared to Con group, the percentage of freezing time and recognition index were significantly decreased, serum concentrations of NSE and NfL, EB content in brain tissues, contents of ROS, IL-6 and iNOS in hippocampal tissues, and lactate/pyruvate ratio were increased, the expression of HIF-1α, PKM2, HK2, IBA1 and cleaved caspase-3 was up-regulated, the apoptosis rate was increased ( P<0.05), and the pathological damage to nerve cells in the hippocampus was found in SD group and SPD group. Compared to SD group, the percentage of freezing time and recognition index were significantly increased, serum concentrations of NSE and NfL, EB content in brain tissues, contents of ROS, IL-6 and iNOS in hippocampal tissues, and lactate/pyruvate ratio were decreased, the expression of HIF-1α, PKM2, HK2, IBA1 and cleaved caspase-3 was down-regulated, the apoptosis rate was decreased ( P<0.05), and the pathological damage to nerve cells in the hippocampus was significantly attenuated in SP group. Compared to SP group, the percentage of freezing time and recognition index were significantly decreased, the serum concentrations of NSE and NfL, EB content in brain tissues, contents of ROS, IL-6 and iNOS in hippocampal tissues, and lactate/pyruvate ratio were increased, the expression of HIF-1α, PKM2, HK2, IBA1 and cleaved caspase-3 was up-regulated, the apoptosis rate was increased ( P<0.05), and the pathological damage to nerve cells in the hippocampus was aggravated in SPD group. Conclusions:Propofol can attenuate acute sleep deprivation-induced brain injury in aged rats, and the mechanism may be related to inhibition of the HIF-1α-glycolytic pathway and reduction of neuroinflammatory responses.
7.Impact of different diagnostic criteria for assessing mild micro-hepatic encephalopathy in liver cirrhosis: an analysis based on a prospective, multicenter, real-world study
Xiaoyan LI ; Shanghao LIU ; Chuan LIU ; Hongmei ZU ; Xiaoqing GUO ; Huiling XIANG ; Yan HUANG ; Zhaolan YAN ; Yajing LI ; Jia SUN ; Ruixin SONG ; Junqing YAN ; Qing YE ; Fei LIU ; Lei HUANG ; Fanping MENG ; Xiaoning ZHANG ; Shaoqi YANG ; Shengjuan HU ; Jigang RUAN ; Yiling LI ; Ningning WANG ; Huipeng CUI ; Yanmeng WANG ; Chuang LEI ; Qinghai WANG ; Hongling TIAN ; Zhangshu QU ; Min YUAN ; Ruichun SHI ; Xiaoting YANG ; Dan JIN ; Dan SU ; Yijun LIU ; Ying CHEN ; Yuxiang XIA ; Yongzhong LI ; Qiaohua YANG ; Huai LI ; Xuelan ZHAO ; Zemin TIAN ; Hongji YU ; Xiaojuan ZHANG ; Chenxi WU ; Zhijian WU ; Shengqiang LI ; Qian SHEN ; Xuemei LIU ; Jianping HU ; Manqun WU ; Tong DANG ; Jing WANG ; Xianmei MENG ; Haiying WANG ; Zhenyu JIANG ; Yayuan LIU ; Ying LIU ; Suxuan QU ; Hong TAO ; Dongmei YAN ; Jun LIU ; Wei FU ; Jie YU ; Fusheng WANG ; Xiaolong QI ; Junliang FU
Chinese Journal of Hepatology 2023;31(9):961-968
Objective:To compare the differences in the prevalence of mild micro-hepatic encephalopathy (MHE) among patients with cirrhosis by using the psychometric hepatic encephalopathy score (PHES) and the Stroop smartphone application (Encephal App) test.Methods:This prospective, multi-center, real-world study was initiated by the National Clinical Medical Research Center for Infectious Diseases and the Portal Hypertension Alliance and registered with International ClinicalTrials.gov (NCT05140837). 354 cases of cirrhosis were enrolled in 19 hospitals across the country. PHES (including digital connection tests A and B, digital symbol tests, trajectory drawing tests, and serial management tests) and the Stroop test were conducted in all of them. PHES was differentiated using standard diagnostic criteria established by the two studies in China and South Korea. The Stroop test was evaluated based on the criteria of the research and development team. The impact of different diagnostic standards or methods on the incidence of MHE in patients with cirrhosis was analyzed. Data between groups were differentiated using the t-test, Mann-Whitney U test, and χ2 test. A kappa test was used to compare the consistency between groups. Results:After PHES, the prevalence of MHE among 354 cases of cirrhosis was 78.53% and 15.25%, respectively, based on Chinese research standards and Korean research normal value standards. However, the prevalence of MHE was 56.78% based on the Stroop test, and the differences in pairwise comparisons among the three groups were statistically significant (kappa = -0.064, P < 0.001). Stratified analysis revealed that the MHE prevalence in three groups of patients with Child-Pugh classes A, B, and C was 74.14%, 83.33%, and 88.24%, respectively, according to the normal value standards of Chinese researchers, while the MHE prevalence rates in three groups of patients with Child-Pugh classes A, B, and C were 8.29%, 23.53%, and 38.24%, respectively, according to the normal value standards of Korean researchers. Furthermore, the prevalence rates of MHE in the three groups of patients with Child-Pugh grades A, B, and C were 52.68%, 58.82%, and 73.53%, respectively, according to the Stroop test standard. However, among the results of each diagnostic standard, the prevalence of MHE showed an increasing trend with an increasing Child-Pugh grade. Further comparison demonstrated that the scores obtained by the number connection test A and the number symbol test were consistent according to the normal value standards of the two studies in China and South Korea ( Z = -0.982, -1.702; P = 0.326, 0.089), while the other three sub-tests had significant differences ( P < 0.001). Conclusion:The prevalence rate of MHE in the cirrhotic population is high, but the prevalence of MHE obtained by using different diagnostic criteria or methods varies greatly. Therefore, in line with the current changes in demographics and disease spectrum, it is necessary to enroll a larger sample size of a healthy population as a control. Moreover, the establishment of more reliable diagnostic scoring criteria will serve as a basis for obtaining accurate MHE incidence and formulating diagnosis and treatment strategies in cirrhotic populations.
8.A prospective multicenter and real-world study on the diagnostic value of combination of number connection test-B and line tracing test in mild hepatic encephalopathy
Junqing YAN ; Hongmei ZU ; Jing WANG ; Xiaoqing GUO ; Xiaoyan LI ; Shanghao LIU ; Huiling XIANG ; Zhaolan YAN ; Tong DANG ; Haiying WANG ; Jia SUN ; Lei HUANG ; Fanping MENG ; Qingge ZHANG ; Guo ZHANG ; Yan HUANG ; Shaoqi YANG ; Shengjuan HU ; Jigang RUAN ; Yiling LI ; Chuang LEI ; Ying SONG ; Zhangshu QU ; Ruichun SHI ; Qin LIU ; Yijun LIU ; Qiaohua YANG ; Xuelan ZHAO ; Caiyan ZHAO ; Chenxi WU ; Qian SHEN ; Manqun WU ; Yayuan LIU ; Dongmei YAN ; Chuan LIU ; Junliang FU ; Xiaolong QI
Chinese Journal of Digestion 2022;42(10):659-666
Objective:To investigate the diagnostic value of independent and combined subtests of the psychometric hepatic encephalopathy score (PHES) in mild hepatic encephalopathy(MHE) of patients with liver cirrhosis, so as to optimize the PHES.Methods:This was a prospective, multicenter and real-world study which was sponsored by the National Clinical Research Center of Infectious Diseases and the Portal Hypertension Consortium. Twenty-six hospitals from 13 provinces, autonomous regions and municipalities countrywide participated in this study, induding Tianjin Third Central Hospital, the Fourth People′s Hospital of Qinghai Province, the Second Affiliated Hospital of Baotou Medical College, the Third People′s Hospital of Taiyuan, the Fifth Medical Center of PLA General Hospital and so on. From October 2021 to February 2022, outpatients and hospitalized patients with liver cirrhosis and no obvious hepatic encephalopathy were consecutively enrolled. All patients received 5 PHES subjects in the same order: number connection test(NCT)-A, NCT-B, digit symbol test(DST), line tracing test(LTT) and serial dotting test(SDT), and the scores were calculated. The total score of PHES <-4 was taken as the cut-off value for diagnosing MHE. Compare the differences in each subtest between MHE group and non-MHE group. Receiver operating characteristic curve(ROC) and area under the curve(AUC) was performed to assess the diagnostic value of independent and combined subtests in MHE. Mann-Whitney U test and DeLong test were used for statistical analysis. Results:A total of 581 patients with liver cirrhosis were enrolled, 457 were diagnosed as MHE, and the incidence of MHE was 78.7%. The results of NCT-A, NCT-B, SDT, LTT, DST of MHE group were 60.00 s(47.01 s, 88.00 s), 90.45 s(69.32 s, 125.35 s), 74.00 s(57.65 s, 96.60 s), 74.72(60.00, 98.61) and 27.00(20.00, 36.00), respectively. Compared those of non-MHE group(34.00 s(29.15 s, 44.48 s), 50.00 s(40.98 s, 60.77 s), 50.00 s(41.07 s, 63.03 s), 46.23(38.55, 59.42) and 42.00(34.00, 50.75)), the differences were statistically significant( Z=12.37, 12.98, 9.83, 11.56, 10.66; all P<0.001). The AUC(95% confidence interval(95% CI)) of subtests of PHES NCT-B, NCT-A, LTT, DST and SDT alone in MHE diagnosis were 0.880(0.849 to 0.910), 0.862(0.828 to 0.896), 0.838(0.799 to 0.877), 0.812(0.772 to 0.851) and 0.788(0.743 to 0.832), respectively. The combination of 2 PHES subtests significantly increased the diagnostic efficacy. Among them the diagnostic efficacy of the combination of NCT-B and LTT was the best, the AUC(95% CI) was 0.924(0.902 to 0.947), the specificity was 91.9% and the sensitivity was 79.2%, which was better than a single PHES subtest (NCT-A, NCT-B, SDT, LTT and DST) and the combination of NCT-A and DST(AUC was 0.879, 95% CI0.847 to 0.910) which was recommended by guidelines on the management of hepatic encephalopathy in cirrhosis, the differences were statistically significant ( Z=3.78, 3.83, 5.57, 5.51, 5.38, 2.93; all P<0.01). Furthermore, compared between the combination of NCT-B and LTT and the combination of 3 subests of PHES, only the diagnostic efficacy of combination of NCT-B, LTT and SDT (AUC was 0.936, 95% CI 0.916 to 0.956) was better than that of the combination of NCT-B and LTT, the difference was statistically significant( Z=2.32, P=0.020). Conclusion:Based on the diagnostic efficacy and clinical feasibility of PHES subtests and their combinations, the combination of NCT-B and LTT is recommended for the diagnosis of MHE.
9.Biological function and molecular mechanism of the transcription factor GLKs in plants: a review.
Shurong SHEN ; Junjie YUAN ; Yiling XU ; Bojun MA ; Xifeng CHEN
Chinese Journal of Biotechnology 2022;38(8):2700-2712
GLKs (GOLDEN 2-LIKEs) are a group of plant-specific transcription factors regulating the chloroplast biogenesis, differentiation and function maintains by triggering the expression of the photosynthesis-associated nuclear genes (PhANGs). The GLKs also play important roles in nutrient's accumulation in fruits, leaf senescence, immunity and abiotic stress response. The expression of GLK genes were affected by multiple hormones or environmental factors. Therefore, GLKs were considered as the key nodes of regulatory network in plant cells, and potential candidates to improve the photosynthetic capacity of crops. Since numerous researches of GLKs have been reported in plants, the biological function, molecular mechanism of GLKs genes and its applications in breeding were summarized and a GLK-mediated signaling network model was developed. This review may facilitate future research and application of GLKs.
Chloroplasts/genetics*
;
Gene Expression Regulation, Plant
;
Photosynthesis/genetics*
;
Plant Breeding
;
Transcription Factors/metabolism*
10.Optimization of the Extraction Technology of Phenolic Acid from Amomum tsaoko
Hua SHEN ; Hongmei GUAN ; Yan ZHONG ; Yiling TANG ; Xin XU ; Min DAI ; Zhonghui PU
China Pharmacy 2021;32(14):1698-1702
OBJECTIVE:To opt imize the extraction technology of phenolic acid from Amomum tsaoko . METHODS :The extraction technology of phenolic acid from A. tsaoko was optimized by using Box-Behnken design-response surface methodology with ethanol volume fraction ,liquid-solid ratio and extraction time as factors ,using the total contents of protocatechuic acid and vanillic acid as response value. The optimizd extraction technology was vlidated. RESULTS :The optimal extraction technology was as follows :ethanol volume fraction 65%,liquid-solid ratio 4∶1(mL/g),extraction time 2.5 h. After 3 times of validation tests , average total content of protocatechuic acid and vanillic acid were 12.32 mg/g(RSD=0.26 %,n=3),average relative error of which with predicted value (12.63 mg/g)was 2.45%. CONCLUSIONS :The optimal technology is stable and feasible .

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