1.Diagnostic value of a combined serology-based model for minimal hepatic encephalopathy in patients with compensated cirrhosis
Shanghao LIU ; Hongmei ZU ; Yan HUANG ; Xiaoqing GUO ; Huiling XIANG ; Tong DANG ; Xiaoyan LI ; Zhaolan YAN ; Yajing LI ; Fei LIU ; Jia SUN ; Ruixin SONG ; Junqing YAN ; Qing YE ; Jing WANG ; Xianmei MENG ; Haiying WANG ; Zhenyu JIANG ; Lei HUANG ; Fanping MENG ; Guo ZHANG ; Wenjuan WANG ; Shaoqi YANG ; Shengjuan HU ; Jigang RUAN ; Chuang LEI ; Qinghai WANG ; Hongling TIAN ; Qi ZHENG ; Yiling LI ; Ningning WANG ; Huipeng CUI ; Yanmeng WANG ; Zhangshu QU ; Min YUAN ; Yijun LIU ; Ying CHEN ; Yuxiang XIA ; Yayuan LIU ; Ying LIU ; Suxuan QU ; Hong TAO ; Ruichun SHI ; Xiaoting YANG ; Dan JIN ; Dan SU ; Yongfeng YANG ; Wei YE ; Na LIU ; Rongyu TANG ; Quan ZHANG ; Qin LIU ; Gaoliang ZOU ; Ziyue LI ; Caiyan ZHAO ; Qian ZHAO ; Qingge ZHANG ; Huafang GAO ; Tao MENG ; Jie LI ; Weihua WU ; Jian WANG ; Chuanlong YANG ; Hui LYU ; Chuan LIU ; Fusheng WANG ; Junliang FU ; Xiaolong QI
Chinese Journal of Laboratory Medicine 2023;46(1):52-61
Objective:To investigate the diagnostic accuracy of serological indicators and evaluate the diagnostic value of a new established combined serological model on identifying the minimal hepatic encephalopathy (MHE) in patients with compensated cirrhosis.Methods:This prospective multicenter study enrolled 263 compensated cirrhotic patients from 23 hospitals in 15 provinces, autonomous regions and municipalities of China between October 2021 and August 2022. Clinical data and laboratory test results were collected, and the model for end-stage liver disease (MELD) score was calculated. Ammonia level was corrected to the upper limit of normal (AMM-ULN) by the baseline blood ammonia measurements/upper limit of the normal reference value. MHE was diagnosed by combined abnormal number connection test-A and abnormal digit symbol test as suggested by Guidelines on the management of hepatic encephalopathy in cirrhosis. The patients were randomly divided (7∶3) into training set ( n=185) and validation set ( n=78) based on caret package of R language. Logistic regression was used to establish a combined model of MHE diagnosis. The diagnostic performance was evaluated by the area under the curve (AUC) of receiver operating characteristic curve, Hosmer-Lemeshow test and calibration curve. The internal verification was carried out by the Bootstrap method ( n=200). AUC comparisons were achieved using the Delong test. Results:In the training set, prevalence of MHE was 37.8% (70/185). There were statistically significant differences in AMM-ULN, albumin, platelet, alkaline phosphatase, international normalized ratio, MELD score and education between non-MHE group and MHE group (all P<0.05). Multivariate Logistic regression analysis showed that AMM-ULN [odds ratio ( OR)=1.78, 95% confidence interval ( CI) 1.05-3.14, P=0.038] and MELD score ( OR=1.11, 95% CI 1.04-1.20, P=0.002) were independent risk factors for MHE, and the AUC for predicting MHE were 0.663, 0.625, respectively. Compared with the use of blood AMM-ULN and MELD score alone, the AUC of the combined model of AMM-ULN, MELD score and education exhibited better predictive performance in determining the presence of MHE was 0.755, the specificity and sensitivity was 85.2% and 55.7%, respectively. Hosmer-Lemeshow test and calibration curve showed that the model had good calibration ( P=0.733). The AUC for internal validation of the combined model for diagnosing MHE was 0.752. In the validation set, the AUC of the combined model for diagnosing MHE was 0.794, and Hosmer-Lemeshow test showed good calibration ( P=0.841). Conclusion:Use of the combined model including AMM-ULN, MELD score and education could improve the predictive efficiency of MHE among patients with compensated cirrhosis.
2.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.
3.Effect of outpatient cardiac rehabilitation on quality of life and lifestyle changes in patients with coronary heart disease
Xiling QI ; Ailing HUANG ; Jing WU ; Chuang ZENG ; Xiaoyu SHEN
Chinese Journal of General Practitioners 2022;21(12):1127-1132
Objective:To investigate the effect of outpatient cardiac rehabilitation on the quality of life and lifestyle changes in patients with coronary heart disease.Methods:A total of 135 patients with coronary heart disease who received exercise rehabilitation in the Cardiac Rehabilitation Center of Second Hospital of Shanxi Medical University were enrolled in the study. Among them, 63 cases seldom attended (≤12 sessions, low-attending group), 37 cases less frequently attended (13-24 sessions, medium-attending group) and 35 cases attended frequently (≥25 sessions, high-attending group). The clinical data, cardiac rehabilitation, Seattle Angina Scale (SAQ) score and SF-36 quality of life score before and after rehabilitation, and lifestyle changes such as out-of-hospital exercise were documented and compared among the three groups.Results:Compared with baseline, the 5-dimensional scores of SAQ and the 9-dimensional scores of SF-36 (except for role-emotional and health change) were not significantly improved after cardiac rehabilitation in low-attending group ( P>0.05), while the angina stability, angina frequency, treatment satisfaction of SAQ, and bodily pain, health change of SF-36 in medium-attending group were improved ( P<0.05), and both SAQ and SF-36 in high-attending group were increased ( P<0.05). After cardiac rehabilitation, the SAQ and SF-36 scores of patients in high-attending group were significantly higher than those of patients in low-attending group ( P<0.05). The lifestyle was changed in 77.14%(27/35)patients of high-attending group, which was higher and that of low-attending group(38.10%, 24/63) (χ 2=13.74, P<0.001). Conclusion:The outpatient exercise rehabilitation can improve the quality of life and change lifestyle of patients with coronary heart disease; and the effect of rehabilitation is associated with the attending frequency.
4.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.
5.Construction of a nomogram prediction model for pathological complete response (pCR) of ipsilateral supraclavicular lymph node after neoadjuvant chemotherapy for breast cancer with first diagnosis of ipsilateral supraclavicular lymph node metastasis.
Min Hao LYU ; De Chuang JIAO ; Jun Zhao WU ; Pei Qi TIAN ; You Zhao MA ; Zhen Zhen LIU ; Xiu Chun CHEN
Chinese Journal of Oncology 2022;44(2):160-166
Objective: To develop a predictive model for pathologic complete response (pCR) of ipsilateral supraclavicular lymph nodes (ISLN) after neoadjuvant chemotherapy for breast cancer and guide the local treatment. Methods: Two hundred and eleven consecutive breast cancer patients with first diagnosis of ipsilateral supraclavicular lymph node metastasis who underwent ipsilateral supraclavicular lymph node dissection and treated in the Breast Department of Henan Cancer Hospital from September 2012 to May 2019 were included. One hundred and forty two cases were divided into the training set while other 69 cases into the validation set. The factors affecting ipsilateral supraclavicular lymph node pCR (ispCR)of breast cancer after neoadjuvant chemotherapy were analyzed by univariate and multivariate logistic regression analyses, and a nomogram prediction model of ispCR was established. Internal and external validation evaluation of the nomogram prediction model were conducted by receiver operating characteristic (ROC) curve analysis and plotting calibration curves. Results: Univariate logistic regression analysis showed that Ki-67 index, number of axillary lymph node metastases, breast pCR, axillary pCR, and ISLN size after neoadjuvant chemotherapy were associated with ispCR of breast cancerafter neoadjuvant chemotherapy (P<0.05). Multivariate logistic regression analysis showed that the number of axillary lymph node metastases (OR=5.035, 95%CI: 1.722-14.721, P=0.003), breast pCR (OR=4.662, 95%CI: 1.456-14.922, P=0.010) and ISLN size after neoadjuvant chemotherapy (OR=4.231, 95%CI: 1.194-14.985, P=0.025) were independent predictors of ispCR of breast cancer after neoadjuvant chemotherapy. A nomogram prediction model of ispCR of breast cancer after neoadjuvant chemotherapy was constructed using five factors: number of axillary lymph node metastases, Ki-67 index, breast pCR, axillary pCR and size of ISLN after neoadjuvant chemotherapy. The areas under the ROC curve for the nomogram prediction model in the training and validation sets were 0.855 and 0.838, respectively, and the difference was not statistically significant (P=0.755). The 3-year disease-free survival rates of patients in the ispCR and non-ispCR groups after neoadjuvant chemotherapy were 64.3% and 54.8%, respectively, with statistically significant differences (P=0.024), the 3-year overall survival rates were 83.8% and 70.2%, respectively, without statistically significant difference (P=0.087). Conclusions: Disease free survival is significantly improved in breast cancer patients with ispCR after neoadjuvant chemotherapy. The constructed nomogram prediction model of ispCR of breast cancer patients after neoadjuvant chemotherapy is well fitted. Application of this prediction model can assist the development of local management strategies for the ipsilateral supraclavicular region after neoadjuvant chemotherapy and predict the long-term prognosis of breast cancer patients.
Axilla/pathology*
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Breast Neoplasms/pathology*
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Female
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Humans
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Lymph Node Excision
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Lymph Nodes/pathology*
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Lymphatic Metastasis/pathology*
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Neoadjuvant Therapy
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Nomograms
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Retrospective Studies
6.Comparison of pathogenicity and gene expression profiles between adult Schistosoma japonicum isolated from hilly and marshland and lake regions of Anhui Province
Jia-ling WU ; Ming-chuang HU ; Qi WANG ; Dao-hua LIU ; Le-sheng ZHANG ; Lei ZHU ; Cheng-song SUN ; Zhi-guo CAO ; Tian-ping WANG
Chinese Journal of Schistosomiasis Control 2022;34(6):580-587
Objective To compare the differences in pathogenicity and gene expression profiles between adult Schistosoma japonicum isolated from hilly and marshland and lake regions of Anhui Province, so as to provide the scientific evidence for formulating the precise schistosomiasis control strategy in different endemic foci. Methods C57BL/6 mice were infected with cercariae of S. japonicum isolates from Shitai County (hilly regions) and Susong County (marshland and lake regions) of Anhui Province in 2021, and all mice were sacrificed 44 days post-infection and dissected. The worm burdens, number of S. japonicum eggs deposited in the liver, and the area of egg granulomas in the liver were measured to compare the difference in the pathogenicity between the two isolates. In addition, female and male adult S. japonicum worms were collected and subjected to transcriptome sequencing, and the gene expression profiles were compared between Shitai and Susong isolates of S. japonicum. The differentially expressed genes (DEGs) were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. Results The total worm burdens [(14.50 ± 3.96) worms/mouse vs. (16.10 ± 3.78) worms/mouse; t = 0.877, P = 0.392], number of female and male paired worms [(4.50 ± 0.67) worms/mouse vs. (5.10 ± 1.45) worms/mouse; t = 1.129, P = 0.280], number of unpaired male worms [(5.50 ± 4.01) worms/mouse vs. (5.60 ± 1.69) worms/mouse; t = 0.069, P = 0.946], number of eggs deposited in per gram liver [(12 116.70 ± 6 508.83) eggs vs. (16 696.70 ± 4 571.56) eggs; t = 1.821, P = 0.085], and area of a single egg granuloma in the liver [(74 359.40 ± 11 766.34) µm2 vs. (74 836.90 ± 13 086.12) µm2; t = 0.081, P = 0.936] were comparable between Shitai and Susong isolates of S. japonicum. Transcriptome sequencing identified 584 DEGs between adult female worms and 1 598 DEGs between adult male worms of Shitai and Susong isolates of S. japonicum. GO enrichment analysis showed that the DEGs between female adults were predominantly enriched in biological processes of stimulus response, cytotoxicity, multiple cell biological processes, metabolic processes, cellular processes and signaling pathways, cellular components of cell, organelles and cell membranes and molecular functions of binding and catalytic ability, and KEGG enrichment analysis showed that these DEGs were significantly enriched in pathways of vascular endothelial growth factor signaling, glutathione metabolism, arginine and proline metabolism. In addition, the DEGs between male adults were predominantly enriched in biological processes of signaling transduction, multiple cell biological processes, regulation of biological processes, metabolic processes, development processes and stimulus responses, cellular components of extracellular matrix and cell junction and molecular functions of binding and catalytic ability, and these DEGs were significantly enriched in pathways of Wnt signaling, Ras signaling, natural killer cells-mediated cytotoxicity, extracellular matrix-receptor interactions and arginine biosynthesis. Conclusions There is no significant difference in the pathogenicity between S. japonicum isolates from hilly and marshland and lake regions of Anhui Province; however, the gene expression profiles vary significantly between S. japonicum isolates.
7.Expression and clinical significance of P-selectin and HPA in benign and malignant hydatidform mole tissues
Jie-Min QI ; Shu-Li YU ; Xing-Wu BAI ; Chuang WANG
Chinese Journal of Clinical and Experimental Pathology 2019;35(3):273-277
Purpose To investigate the expression characteristics and significance of P-selectin and HPA in benign and malignant hydatidform mole tissues. Methods By using immunohistochemical technique SP and RT-PCR, the expression of Pselectin and HPA was detected in 40 cases of benign hydatidiform mole tissues, and 12 malignant hydatidiform mole tissues.Meanwhile, 40 cases of normal placental villi tissues were observed. Results The protein positive rate and protein relative quantity expression and the mRNA relative quantity expression of P-selectin and HPA were gradually increasing in normal placenta villi tissues, benign hydatidiform mole tissues, and malignant hydatidiform mole tissues. The differences between groups were statistically significant (all P<0.05). The expression of P-selectin and HPA showed positive correlation (all P<0.05) in benign and malignant hydatidform mole tissues. Conclusion The over-expression of P-selectin and HPA promotes the occurrence and development of hydatidform mole. The detection of the expression levels of P-selectin and HPA is of great significance for the differential diagnosis and prognosis assessment of benign and malignant hydatidform mole. It could become a biological predictor of malignant development of hydatidform mole.
8.Effects of electroacupuncture of different frequencies on free radicals in hippocampus of mice with vascular dementia
Ze-Hui WU ; Xiao-Kang XU ; Yu-Lei LIANG ; Chuang ZHANG ; Xiao-Qi ZHANG ; Xin ZHANG ; Xuan-Ping ZHANG ; Hui-Zhen ZHANG ; Fei GUO ; Yan-Ping YANG
Journal of Acupuncture and Tuina Science 2018;16(5):297-302
Objective:To observe the effects of electroacupuncture (EA) of three different frequencies (2 Hz,80 Hz and 2 Hz/80 Hz) on the free radicals in hippocampus of vascular dementia (VD) model mice.Methods:A total of 100 Kunming mice were randomly divided into a sham operation group,a model group,a 2 Hz EA group,an 80 Hz EA group and a 2 Hz/80 Hz EA group,with 20 mice in each group.The ischemia-reperfusion VD model was established by repeated blockade of bilateral common carotid arteries.Mice in EA groups began EA treatment on the 4th day after the operation.Baihui (GV 20),Dazhui (GV 14),Geshu (BL 17) and Zusanli (ST 36) were punctured and then connected to EA instrument,with different waves of 2 Hz,80 Hz or 2 Hz/80 Hz (10 min/time) applied accordingly,once a day.During the jumping stand experiment,the learning performance,memory performance and hippocampal calcitonin gene-related peptide (CGRP),nitric oxide synthase (NOS),malondialdehyde (MDA),changes in superoxide dismutase (SOD) and true choline esterase (TChE) were observed.In hippocampus,the CGRP level was determined by radioimmunoassay;the MDA level was determined by thiobarbituric acid colorimetric method;the activities of NOS and TChE were determined by spectrophotometry;the activity of SOD was determined by xanthine oxidase method.Results:Compared with the sham operation group,the performances of learning and memory decreased significantly in the model group (P<0.01);in hippocampus,the CGRP level decreased,the MDA level increased,the activities of NOS and TChE increased,and the activity of SOD decreased in the model group.Compared with the model group,the learning and memory performances of the EA groups were significantly improved (P<0.05 or P<0.01);in hippocampus,the CGRP level increased,the MDA level decreased,the NOS and TChE activities decreased,and the SOD activity increased (P<0.05 or P<0.01).Among EA groups,the 2 Hz/80 Hz EA group was superior to the 2 Hz EA group and the 80 Hz EA group (P<0.05 or P<0.01).Conclusion:EA can improve the cognitive impairment of mice with ischemia-reperfusion VD.The mechanism may be related to the improvement of cerebral blood circulation,regulation of the central neurotransmitters,fighting lipid peroxidation and promoting nerve cell repair.The therapeutic effects of EA with different frequencies were different,and the intervention effect by EA at 2 Hz/80Hz is the most significant.
9.Study on anti-inflammatory activities of bile from Channa argus
Xiaodong WU ; Weiyan QI ; Yao DONG ; Chuang GE ; Hanmei XU
Chinese Pharmacological Bulletin 2017;33(7):941-945
Aim To study the anti-inflammatory activity of the Channa argus bile.Methods The bile was isolated and purified by extraction and silica gel column chromatography.Then the compounds were identified by hydrogen and carbon spectra.The spleen lymphocytes proliferation assay and Lipopolysaccharide(LPS) induced mouse macrophage RAW264.7 releasing Nitrogen Monoxide(NO) experiment were used to evaluate the anti-inflammatory activity.Results Compound(C1) of sodium taurocholate and compound(C2) of sodium taurochenodeoxycholate were isolated by activity tracing.The cell relative viabilities of the two compounds on Concanavalin A(Con A) induced spleen lymphocytes proliferation assay were 65.9%±11.7% and 60.5%±9.4%, which were significantly different from the result of model group (P<0.01), respectively.The NO production of LPS-induced RAW264.7 release of NO was (16.4±1.9) μmol·L-1 and (15.5±1.7) μmol·L-1, which were significantly different from the result of model group(P<0.01).Conclusion Sodium taurocholate and sodium taurochenodeoxycholate from Channa argus perform the anti-inflammatory activities but have no cytotoxic effect on spleen lymphocytes and macrophage.
10.Gene expression profile of continuous mechanical stress-induced osteoblastic differentiation of rat bone marrow stromal cells
Peng ZHANG ; Bing FANG ; Chuang-qi YU ; Qing-gang DAI ; Yu-qiong WU ; Xiao YANG ; Ling-yong JIANG
Journal of Medical Biomechanics 2014;29(1):E014-E019
Objective To evaluate differences in genes expression of rat bone marrow stromal cells (rBMSCs) under continuous mechanical strain by gene microarray technology.Methods rBMSCs were isolated and cultured in vitro. Continuous stresses with amplitude of 10% and frequency of 1 Hz were applied on rBMSCs for 6 hours by Flexercell mechanical loading system to investigate rBMSC gene expression profiles, and quantitative PCR was used to verify gene expression changes related to osteoblastic differentiation. Results Compared with the control group, 1 244 differentially expressed genes were found in mechanical loading group, among which 793 genes were up-regulated, while 451 genes were down-regulated.GO (gene ontology) analysis suggested that differentially expressed genes were mainly involved in multicellular organismal development, cell differentiation, chemotaxis, cell adhesion and so on. Four signaling pathways as Notch, Wnt, FGF and IGF might participate in the regulation of stress-induced osteoblastic differentiation. PCR validation results were consistent with the gene chip results. Conclusions Mechanical stress could induce osteoblastic differentiation of the BMSCs, while several differentially expressed genes screened by gene microarray may attribute to this process.

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