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Zhang MZ, Niu XY, Dang JH, Sun JP, Wang WJ, Cheng JL, Zhang Y. [Analysis of changes in intrinsic neural timescales in male smoking addicts based on whole brain resting-state functional magnetic resonance imaging]. Zhonghua Yi Xue Za Zhi 2024; 104:1168-1173. [PMID: 38583048 DOI: 10.3760/cma.j.cn112137-20231010-00696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
Objective: To investigate the abnormal changes of intrinsic neural time scale (INT) in male smoking addicts based on whole brain resting state functional magnetic resonance imaging (rs-fMRI). Methods: A case-control study. The clinical data and whole brain rs-fMRI data of 139 male subjects, aged (34.1±8.8) years, recruited through the online platform from January 2019 to December 2021 were retrospectively analyzed. According to the existence of smoking addiction, they were divided into smoking addiction group (n=83) and healthy control group (n=56).INT was calculated to reflect the brain neural activity dynamics. Single sample t test was used to obtain the whole brain spatial distribution maps of INT in smoking addiction group and the control group. Then two-sample t test was conducted to explore the difference of INT between the smoking addition group and the healthy control group, with age and years of education as covariates. Finally, Spearman correlation analysis was used to explore the relationship between INT and nicotine dependence scale score and smoking index. Results: Subjects with smoking addiction and healthy control group showed a similar pattern of hierarchical neural timescales, namely shorter INT in sensorimotor areas and longer INT in parietal lobe, posterior cingulate cortex. In addition, in the smoking addiction group, the left medial occipital gyrus (peak t=-3.18), left suproccipital gyrus (peak t=-3.66), bilateral pericalar cleft cortex (left: peak t=-3.02, right: peak t=-3.22), bilateral lingual gyrus (left: peak t=-3.10, right: t peak=-3.04), left cuneus (peak t=-2.97), default network associated brain region [left anterior cuneus(peak t=-3.23), left angular gyrus (peak t=-3.07), and left posterior cingulate cortex (peak t=-3.54) were significantly lower than those of healthy controls (gaussian random field correction, voxel level all P<0.005, mass level all P<0.05). However, there was no significant correlation between INT and nicotine dependence scale score and smoking index (both P>0.05 after Bonferroni correction). Conclusion: Compared with healthy controls, smoking addicts showed abnormal changes in the dynamics of neural activity in the visual cortex and the default network.
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Affiliation(s)
- M Z Zhang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Y Niu
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J H Dang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J P Sun
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W J Wang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Li SJ, Zhang ZX, Liu J, Wang WJ, Wang J, Zhang Y, Cheng JL. [The value of T2 mapping for evaluating the pathological type, grade and depth of myometrial invasion in endometrial carcinoma]. Zhonghua Zhong Liu Za Zhi 2023; 45:673-680. [PMID: 37580272 DOI: 10.3760/cma.j.cn112152-20220124-00055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Objective: To investigate the value of T2 map and synthetic T2WI generated by T2 mapping in evaluating the histological type, pathological classification and depth of myometrial invasion of endometrial carcinoma (EC). Methods: Seventy-three patients with pathologically proven EC diagnosed at the First Affiliated Hospital of Zhengzhou University from December 2019 to December 2021 and 42 healthy volunteers were enrolled in the study. All subjects underwent conventional MRI, diffusion weighted imaging (DWI) and T2 mapping sequence for the pelvic cavity to test the T2 values and the apparent diffusion coefficient (ADC) of the focus nidus of the patients and the normal endometrium of the volunteers. The T2 and ADC values of EC vs normal endometrium, and those of different histological types and pathological grades were compared. The receiver operating characteristic (ROC) curves were constructed to evaluate the diagnostic performance of T2 and ADC values in determining the pathological type and classification of EC. In addition, two radiologists used synthetic T2WI combined with T2 map and conventional T2WI combined with DWI, respectively, to evaluate the depth of myometrial invasion, and compared the imaging results with the results of pathological diagnosis to evaluate the diagnostic efficacy of the two methods in determining the depth of myometrial invasion. Results: The T2 and ADC values of endometrial carcinoma were 85.0 (80.8, 92.5) ms and 0.71 (0.64, 0.77) ×10(-3) mm(2)/s, respectively, which were significantly lower than those of normal endometrium [147.4 (123.4, 176.7) ms and 1.46 (1.26, 1.76)×10(-3) mm(2)/s, respectively; both P<0.05]. The T2 values of endometrioid carcinoma (EA) [84.1 (79.5, 88.7) ms] were significantly lower than those of non-EA [98.8 (92.1, 102.8) ms; P<0.05]. There was no significant difference in ADC values between EA and non-EA (P=0.075). The T2 values of G1, G2 and G3 groups in EA were 89.1 (84.4, 94.4) ms, 83.6 (80.9, 86.2) ms, and 76.5 (71.4, 80.3) ms, respectively. There were significant differences in the T2 values between G1 vs G2, G1 vs G3, and G2 vs G3 groups, respectively (all P<0.017). Significant difference was also found in the ADC values between the G1 and G3 groups (P<0.017). The area under the ROC curve (AUC) of T2 values in distinguishing EA from non-EA was 0.867. The AUC of T2 values, ADC values and their combination in predicting high-grade EA was 0.888, 0.730 and 0.895, respectively. The accuracy of synthetic T2WI+ T2 map and conventional T2WI+ DWI in the diagnosis of deep myometrial invasion was 78.1% and 79.5%, respectively, with no significant difference (P>0.05). Conclusions: T2 mapping has great potential in preoperative evaluation of EC. The quantitative T2 value can be used in the diagnosis, pathological classification and grading of EC. The combination of synthetic T2WI and T2 map may be helpful to determine the depth of myometrial invasion.
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Affiliation(s)
- S J Li
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Z X Zhang
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Liu
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W J Wang
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Wang
- Division of Radiology, Anyang People's Hospital, Anyang 455000, China
| | - Y Zhang
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Division of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Xue KK, Chen JL, Wei YR, Chen Y, Han SS, Wang CH, Zhang Y, Song XQ, Cheng JL. [Abnormal changes of static and dynamic functional connectivity of dopaminergic midbrain in patients with first-episode schizophrenia and their correlations with clinical symptoms]. Zhonghua Yi Xue Za Zhi 2023; 103:1623-1630. [PMID: 37248062 DOI: 10.3760/cma.j.cn112137-20221118-02428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Objective: To investigate the abnormal changes of static functional connectivity (sFC) and dynamic functional connectivity (dFC) in the dopaminergic midbrain (ventral dorsal tegmental area and bilateral substantia nigra compacta, VTA/SNc) in patients with first-episode schizophrenia(SCH), and their correlation with the Positive and Negative Symptom Scale (PANSS). Methods: The data of 198 first-episode untreated schizophrenia patients and 199 healthy controls (HC) matched by age, sex and years of education who were admitted to the First Affiliated Hospital of Zhengzhou University from January 2019 to May 2022 were prospectively collected. All subjects underwent high resolution structural MRI and resting state functional magnetic resonance imaging (rs-fMRI) scanning. The dopaminergic midbrain (VTA/SNc) was defined as three regions of interest (ROI). The sFC and dFC analyses with VTA/SNc as seeds were performed to produce a whole-brain diagram initially, which subsequently were compared between schizophrenia group and HC group. Finally, the correlation analysis of sFC and dFC values with the PANSS scores were performed, including the positive scale score, negative scale score, general psychopathology scale score, total score and symptom scores. Results: There were 86 males and 112 females in SCH group, and aged (23±9) years. Meanwhile, there were 95 males and 104 females in HC group, and aged (22±5) years. In the SCH group, the positive (P), the negative (N) and the general psychopathology (G) scale scores and the total score (T) of the PANSS scale was 20±7, 21±7, 41±11 and 82±22, respectively. Compared with the HC group, the VTA showed decreased sFC with four clusters including cerebellar vermis 7/9, left putamen, right thalamus and left middle cingulate gyrus in the schizophrenia group (peak center, t=-4.35, -4.81, -4.35 and -4.65; voxel P<0.005; cluster P<0.05), the right SNc showed decreased sFC with four clusters including left cerebellar hemisphere 4/5/8, right putamen, right medial orbitofrontal gyrus and the left putamen in the schizophrenia group (peak center, t=-4.91, -5.15, -4.77 and -5.21; voxel P<0.005; cluster P<0.05), and the left SNc showed decreased sFC with four clusters including the left putamen, right putamen, right medial orbitofrontal gyrus and left middle cingulate gyrus in the schizophrenia group (peak center, t=-5.82, -4.83 and -4.65; voxel P<0.005; cluster P<0.05). Compared with the HC group, the VTA showed decreased dFC with the right inferior parietal gyrus, right angular gyrus and right superior parietal gyrus in schizophrenia group (t=-4.17). In the schizophrenia group, the sFC value of cluster 2 (left putamen) with VTA as seed and cluster 4 (left putamen) with right SNc as seed were positively correlated with the positive scale scores in PANSS (r=0.141, 0.169, both P<0.05). The sFC and dFC values of significant regions were also correlated with hallucination, delusion, suspicion, hostility, communication disorder, passivity/indifference, lack of communication, stereotyped thinking, depression, non-cooperation, lack of judgment and insight, impulse control disorder, active social avoidance (all P<0.05). Conclusion: The static and dynamic functional connectivity (stability) of VTA/SNc to cerebellum, thalamus, striatum, prefrontal lobe and cingulate gyrus in first-episode schizophrenia patients were decreased, which were closely related to the positive and negative symptoms of schizophrenia.
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Affiliation(s)
- K K Xue
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Chen
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y R Wei
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Chen
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S S Han
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - C H Wang
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Q Song
- Department of Psychiatry, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Shen J, Wang Z, Liu M, Zhu YJ, Zheng L, Wang LL, Cheng JL, Liu TT, Zhang GD, Yang TY, Wang X, Zhang L. LincRNA-ROR/miR-145/ZEB2 regulates liver fibrosis by modulating HERC5-mediated p53 ISGylation. FASEB J 2023; 37:e22936. [PMID: 37144417 DOI: 10.1096/fj.202201182rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 05/06/2023]
Abstract
The tumor suppressor p53 has been implicated in the pathogenesis of liver fibrosis. HERC5-mediated posttranslational ISG modification of the p53 protein is critical for controlling its activity. Here, we demonstrated that the expression of HERC5 and ISG15 is highly elevated, whereas p53 is downregulated, in fibrotic liver tissues of mice and transforming growth factor-β1 (TGF-β1)-induced LX2 cells. HERC5 siRNA clearly increased the protein expression of p53, but the mRNA expression of p53 was not obviously changed. The inhibition of lincRNA-ROR (ROR) downregulated HERC5 expression and elevated p53 expression in TGF-β1-stimulated LX-2 cells. Furthermore, the expression of p53 was almost unchanged after TGF-β1-stimulated LX-2 cells were co-transfected with a ROR-expressing plasmid and HERC5 siRNA. We further confirmed that miR-145 is a target gene of ROR. In addition, we also showed that ROR regulates the HERC5-mediated ISGylation of p53 through mir-145/ZEB2. Together, we propose that ROR/miR-145/ZEB2 might be involved in the course of liver fibrosis by regulating ISGylation of the p53 protein.
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Affiliation(s)
- Jie Shen
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Zhu Wang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Mei Liu
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Yu-Jie Zhu
- Department of Radiology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Ling Zheng
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Li-Li Wang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Jie-Ling Cheng
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Tong-Tong Liu
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Guo-Dong Zhang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Tian-Yu Yang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Xiao Wang
- Department of Radiology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Lei Zhang
- School of Pharmacy, Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
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Zhang XN, Cheng JL, Zhang Y, Song CR, Ma KR, Bai M, Wang KF, Mao XY. [Analysis of brain volume asymmetry and clinical application in patients with temporal lobe epilepsy with hippocampal sclerosis based on automatic brain segmentation]. Zhonghua Yi Xue Za Zhi 2023; 103:991-998. [PMID: 36990715 DOI: 10.3760/cma.j.cn112137-20220801-01673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Objective: To analyze whole brain structural volume asymmetry in temporal lobe epilepsy with hippocampal sclerosis (TLE-HS) using automated brain segmentation technology, and to investigate the application value of this technology in the diagnosis of TLE-HS and the performance in determining the location the lateralization of epileptogenic focus. Methods: Twenty-eight patients with TLE-HS were enrolled in the First Affiliated Hospital of Zhengzhou University from April 2019 to October 2020, including 13 females and 15 males, aged ranged from 18 to 63 (30±12) years, and these patients were divided two group according to the epilepsy lateralization, left TLE-HS(LTLE-HS) group (n=11), right TLE-HS(RTLE-HS) group (n=17) and 28 normal controls [aged ranged from 18 to 49 (29±10) years]. All of these subjects underwent three-dimensional T1 weighted image (3D T1WI). The differences of brain structure and volumes in LTLE-HS, RTLE-HS and normal controls group were retrospectively analyzed, and Pearson's correlation coefficient was used to evaluate the left and right volume correlations, and effect size was used for evaluating the differences in left and right volume averages. The asymmetry index (AI) of the left and right lateral volumes in each group was also calculated and compared among the three groups. Results: Standard volumes of all structures within the brain were asymmetric in the normal controls, LTLE-HS, and RTLE-HS groups, with smaller volumes of ipsilateral hippocampus than contralateral hippocampus in both the LTLE-HS and RTLE-HS groups(0.20%±0.03% vs 0.24%±0.02%,0.21%±0.03% vs 0.25%±0.02% respectively;both P<0.001), and smaller volumes of gray and white matter of the ipsilateral temporal lobe than contralateral in the LTLE-HS group(4.41%±0.38% vs 5.01%±0.43%,1.83%±0.22 % vs 2.22%±0.14%;both P<0.001). There was a moderate to strong linear correlation (0.553<r<0. 964,all P<0.05) between left and right lateral volumes in the normal controls, LTLE-HS, and RTLE-HS groups. All three groups showed the largest effect sizes in the cingulate gyrus (The effect sizes were 3.07, 4.85 and 4.22 in control, LTLE-HS and RTLE-HS, respectively.). The AI values of the hippocampus, temporal lobe gray matter, and temporal lobe white matter were statistically different among the three groups (-1.48±8.64 vs 15.91±10.15 vs -17.59±10.00, 7.46±2.67 vs 12.67±6.67 vs 3.67±6.15, 6.53±3.71 vs 19.91±9.85 vs 1.57±8.38;all P<0.001). Conclusion: Volumetric measurements by automated brain segmentation techniques can play an important role in preoperative assessment of TLE, and the asymmetry of brain volume may be of value in determining the localization and extent of the epileptogenic focus.
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Affiliation(s)
- X N Zhang
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - C R Song
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - K R Ma
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - M Bai
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - K F Wang
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Y Mao
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Li J, Gao XM, Cheng JL. [Relationship of diffusion kurtosis imaging parameters with the pathologic type and prognosis of rectal tumors]. Zhonghua Zhong Liu Za Zhi 2022; 44:1208-1213. [PMID: 36380670 DOI: 10.3760/cma.j.cn112152-20201019-00913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the application value of diffusion kurtosis imaging (DKI) in the differential diagnosis of rectal tumors and evaluating the prognostic factors associated with rectal adenocarcinoma. Methods: A total of 105 patients with rectal tumors admitted in the First Affiliated Hospital of Zhengzhou University from December 2018 to August 2020 were retrospectively analyzed. All patients underwent high-resolution magnetic resonance DKI scanning. The mean diffusivity (MD), mean kurtosis (MK) and apparent diffusion coefficient (ADC) were measured and the relationship of these parameters with pathological types and prognostic factors of rectal tumor were analyzed. The diagnostic efficacy of MD, MK, and ADC for positive circumferential resection margin (CRM) and extramural venous invasion (EMVI) of rectal adenocarcinoma was evaluated by the receiver operating characteristic (ROC) curve. Results: MD and ADC were only related to pathological type. The MD and ADC were (2.091±0.390)×10(-3) and (1.478±0.265)×10(-3) mm(2)/s in mucinous adenocarcinoma, higher than (1.136±0.182)×10(-3) and (0.767±0.077)×10(-3) mm(2)/s in unspecified adenocarcinoma and (1.617±0.697)×10(-3) and (0.940±0.179)×10(-3) mm(2)/s in tubulo-villous adenoma. The MD and ADC in unspecified adenocarcinoma were lower than those in tubule-villous adenoma (P<0.05). Nevertheless, MK was associated with pathological type, N stage, CRM and EMVI. The MK was 0.566±0.110 in mucinous adenocarcinoma, lower than 0.982±0.135 in unspecified adenocarcinoma and 0.827±0.121 in tubulo-villous adenoma. The MK in unspecified adenocarcinoma was higher than that in intubulo-villous adenoma. The MK was 0.984±0.107 in pN1-2, higher than 0.881±0.146 in pN0. The MK was 0.990±0.142 in positive CRM, higher than 0.862±0.114 in negative CRM. The MK was 0.996±0.140 in positive EMVI, higher than 0.832±0.100 in negative EMVI (P<0.05). The ROC curves showed that the AUCs of MD, MK and ADC in diagnosing positive CRM were 0.459, 0.653 and 0.408, respectively; with MK=1.006 as the optimal diagnostic threshold, the diagnostic sensitivity and specificity were 51.9% and 81.0%, respectively. The AUCs of MD, MK and ADC values in diagnosing positive EMVI were 0.510, 0.662 and 0.388, respectively; with MK=1.010 as the optimal diagnostic threshold, the diagnostic sensitivity and specificity were 50.9% and 87.5%, respectively. Conclusions: DKI quantitative parameter is helpful for discriminating rectal tubulo-villous adenoma, unspecified adenocarcinoma, and mucinous adenocarcinoma, and is helpful for predicting the prognosis of patients with rectal adenocarcinoma. High MK is associated with positive CRM and EMVI.
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Affiliation(s)
- J Li
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X M Gao
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Zhang MZ, Gao XY, Yang ZG, Wang WJ, Xu K, Cheng JL, Zhang Y. [Analysis of effective connectivity in default mode network in male long-term smokers based on dynamic causal modeling]. Zhonghua Yi Xue Za Zhi 2022; 102:2769-2773. [PMID: 36124348 DOI: 10.3760/cma.j.cn112137-20220705-01486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the alterations in effective connection of default mode network (DMN) in long-term male smokers and its correlation with clinical characteristics of smoking. Methods: A total of 131 subjects through WeChat platform and underwent resting-state functional magnetic resonance (rs-fMRI) examinations were recruited, including 76 long-term smokers [long-term smoking group, male, aged 20 to 55 (32.1±6.3) years] and 55 non-smokers [healthy controls, male, aged 20 to 55(32.3±7.4) years] from January 2014 to December 2018. Long-term smokers were defined as those who smoked at least 10 cigarettes per day for more than 2 years, and met the Diagnostic and Statistical Manual of Mental Disorders-Four Edition (DSM-Ⅳ) criteria for substance dependence. Four major nodes of DMN, including left inferior parietal lobule (LIPL), right inferior parietal lobule (RIPL), posterior cingulate cortex (PCC), medial prefrontal cortex (mPFC) were chosen as for the region of interest. The effective connectivity (EC) alterations of DMN between smoking group and healthy controls were compared using dynamic causal modeling (DCM). The correlation between EC with significant difference among the two groups and Nicotine Dependence Scale (FTND) score, pack-year score and smoking duration were evaluated. Results: Compared to the healthy controls, the EC of LIPL to PCC and PCC to mPFC were decreased in the smoking group (EC = -0.091, -0.174, respectively, Bayesian-PP>0.95), and the EC of RIPL to PCC was increased (EC = 0.136, Bayesian-PP>0.95). Besides, EC of LIPL to PCC showed negative correlation with pack-year scores(r=-0.282,P=0.017). No significant linear correlations were observed between EC with significant group difference and FTND score or smoking duration (r=-0.103、-0.089,all P>0.05). Conclusion: Long-term smokers showed multiple abnormalities in IPL-PCC-mPFC circuits, and associated with the pack-year scores.
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Affiliation(s)
- M Z Zhang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Y Gao
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Z G Yang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W J Wang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - K Xu
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of MRI, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Xie SS, Liu J, Song CR, Li ZQ, Zhang Y, Cheng JL. [Magnetic resonance imaging findings of intravascular papillary endothelial hyperplasia]. Zhonghua Yi Xue Za Zhi 2022; 102:961-964. [PMID: 35385969 DOI: 10.3760/cma.j.cn112137-20220223-00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This paper analyzed the imaging data of intravascular papillary endothelial hyperplasia (IPEH) in 5 cases, with 1 male, 4 females, aged 28-61 years. MRI of IPEH revealed well-demarcated masses with central iso-or hypointensity and peripheral hyperintensity on T2-weighted image(T2WI), as well as peripheral enhancement or hyperintensity on T2WI with/without hypointense foci, as well as homogeneous enhancement or heterogeneous enhancement with nonenhanced foci. CT demonstrated iso-or slightly hyperdense, well-circumscribed mass with bone destruction or calcification.
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Affiliation(s)
- S S Xie
- Department of MR, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J Liu
- Department of MR, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - C R Song
- Department of MR, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Z Q Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of MR, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MR, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Xu L, Yang TY, Zhou YW, Wu MF, Shen J, Cheng JL, Liu QX, Cao SY, Wang JQ, Zhang L. Bmal1 inhibits phenotypic transformation of hepatic stellate cells in liver fibrosis via IDH1/α-KG-mediated glycolysis. Acta Pharmacol Sin 2022; 43:316-329. [PMID: 33850278 PMCID: PMC8792062 DOI: 10.1038/s41401-021-00658-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 03/15/2021] [Indexed: 02/03/2023] Open
Abstract
Hepatic stellate cells (HSCs) play an important role in the initiation and development of liver fibrogenesis, and abnormal glucose metabolism is increasingly being considered a crucial factor controlling phenotypic transformation in HSCs. However, the role of the factors affecting glycolysis in HSCs in the experimental models of liver fibrosis has not been completely elucidated. In this study, we showed that glycolysis was significantly enhanced, while the expression of brain and muscle arnt-like protein-1 (Bmal1) was downregulated in fibrotic liver tissues of mice, primary HSCs, and transforming growth factor-β1 (TGF-β1)-induced LX2 cells. Overexpression of Bmal1 in TGF-β1-induced LX2 cells blocked glycolysis and inhibited the proliferation and phenotypic transformation of activated HSCs. We further confirmed the protective effect of Bmal1 in liver fibrosis by overexpressing Bmal1 from hepatic adeno-associated virus 8 in mice. In addition, we also showed that the regulation of glycolysis by Bmal1 is mediated by the isocitrate dehydrogenase 1/α-ketoglutarate (IDH1/α-KG) pathway. Collectively, our results indicated that a novel Bmal1-IDH1/α-KG axis may be involved in regulating glycolysis of activated HSCs and might hence be used as a therapeutic target for alleviating liver fibrosis.
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Affiliation(s)
- Lei Xu
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Tian-Yu Yang
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Yi-Wen Zhou
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Mei-Fei Wu
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jie Shen
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jie-Ling Cheng
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Qing-Xue Liu
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Shi-Yang Cao
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China
| | - Jian-Qing Wang
- The Fourth Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Lei Zhang
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, 230032, China.
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, 230032, China.
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Wang LN, Zhang Y, Gao DB, Cheng JL. [Interventional therapy for myelodysplastic syndrome complicated with acute myocardial infarction: a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:785-787. [PMID: 32957764 DOI: 10.3760/cma.j.cn112148-20200731-00608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- L N Wang
- Department of Cardiology, Baoji High-tech People's Hospital, Baoji 721006, China
| | - Y Zhang
- Department of Cardiology, Baoji High-tech People's Hospital, Baoji 721006, China
| | - D B Gao
- Department of Cardiology, Baoji High-tech People's Hospital, Baoji 721006, China
| | - J L Cheng
- Department of Cardiology, Baoji High-tech People's Hospital, Baoji 721006, China
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Cheng JL, Huang C, Zhang GJ, Liu DW, Li P, Lu CY, Li J. [Epidemiological characteristics of novel coronavirus pneumonia in Henan]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:327-331. [PMID: 32118390 DOI: 10.3760/cma.j.cn112147-20200222-00148] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective: To study the epidemiological characteristics of COVID-19 in Henan Province. Methods: An epidemiological study was conducted based on the latest epidemic information of 1 265 confirmed cases (including regional distribution, severe illness, and deaths) announced by Health Commission of Henan Province, as well as the details of 1 079 COVID-19 officially released by Health Commission of municipalities in Henan Province collected as of 24: 00 on February 19, 2020. Results: Among 1 079 patients diagnosed with COVID-19, there were 573 male (53.2%) and 505 female (46.8%), with the ratio of male to female of 1.14∶1; The majority of patients were 36-59 years old (553 cases, 51.3%), and the mean age was 46 (interquartile range is 24) years old; 515 cases (47.7%) had a history of living, traveling, doing business in Wuhan or a brief stopover at Wuhan train stop, and 382 (35.4%) had a history of close contact with confirmed patients; There were 72 severe cases (5.7%) in 1 265 patients, and the fatality rate was 1.5%. A high number of cases were reported in Xinyang (269 cases, 21.26%), Zhengzhou (156 cases, 12.33%), Nanyang (155 cases, 12.25%), Zhumadian (139 cases, 10.99%), followed by Shangqiu (91 cases, 7.19%), Zhoukou (76 cases, 6.01%). Among 605 patients, the symptoms were fever (553 cases, 91.4%), debilitation (44 cases, 7.3%), cough (110 cases, 18.2%), expectoration (19 cases, 3.1%), chills (6 cases, 1.0%), shiver (7 cases, 1.2%), running nose (21 cases, 3.5%), stuffy noses (8 cases, 1.3%), throat dryness and sore (24 cases, 4.0%), headache (21 cases, 3.5%), chest pain (6 cases, 1.0%), anhelation (18 cases, 3.0%), and gastrointestinal symptom (21 cases, 3.5%). The age of deaths ranged from 33 to 86 years old, with an average age of 72 (interquartile range of 17) years old; there be 7 males (63.6%) and 4 females (36.4%). Conclusion: The cases in Henan Province were mainly imported cases and had certain geographical location relevance; meanwhile, there was a family-focused incidence. The overall trend of new cases was wave-like decline, and the number of deaths was high among elderly men with underlying diseases.
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Affiliation(s)
- J L Cheng
- The First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Academy of Medical Science of Zhengzhou University, Zhengzhou 450052, China
| | - C Huang
- the First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - G J Zhang
- the First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - D W Liu
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - P Li
- the First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - C Y Lu
- The First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Academy of Medical Science of Zhengzhou University, Zhengzhou 450052, China
| | - J Li
- the First Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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12
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Xiang Y, Cheng ZP, Cheng JL, Fang SH, Li XX, Du PF. [Rapamycin eluting stent implantation in the treatment of total coronary artery occlusion in a case of Kawasaki disease]. Zhonghua Er Ke Za Zhi 2020; 58:145-147. [PMID: 32102153 DOI: 10.3760/cma.j.issn.0578-1310.2020.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Y Xiang
- Department of Pediatrics, the Second Hospital of Anhui Medical University, Hefei 230001, China
| | - Z P Cheng
- Department of Cardiovascular, the First Hospital of Anhui Medical University, Hefei 230001, China
| | - J L Cheng
- Department of Pediatrics, the Second Hospital of Anhui Medical University, Hefei 230001, China
| | - S H Fang
- Department of Pediatrics, the Second Hospital of Anhui Medical University, Hefei 230001, China
| | - X X Li
- Department of Pediatrics, the Second Hospital of Anhui Medical University, Hefei 230001, China
| | - P F Du
- Department of Pediatrics, the Second Hospital of Anhui Medical University, Hefei 230001, China
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13
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Shi YY, Zhang Y, Cheng JL, Zhu CD, Xu K, Wang WJ. [Study on the mechanism of brain damage based on structural covariant network to evaluate the brain structure of nicotine addicts]. Zhonghua Yi Xue Za Zhi 2019; 99:669-674. [PMID: 30831615 DOI: 10.3760/cma.j.issn.0376-2491.2019.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the neuromechanism of nicotine dependence, structural covariation networks (SCNs) based on voxel-based morphometry (VBM) were used to study the synergistic changes in gray matter volume in different cerebral cortices of nicotine dependent individuals. Methods: During the period from August 2016 to February 2018, a total of 118 long-term smokers and 57 non-smoking healthy controls (both 18-55 male volunteers) through online platforms and leaflets were recruited. The subjects were scanned with SIEMENS Skyro 3.0T magnetic resonance scanner and underwent routine MRI sequence (preliminary elimination of intracranial lesions) and 3D-T1 (3D-mprage) sequence structure. Two imaging experts used Matlab software platform to carry on segmentation by using SPM8, and to find out the differences between the two groups of brain regions, and differences in brain regions as region of interest (ROI) structure association network analysis. Results: The gray matter volume (GMV) of the right anterior central gyrus and the left inferior parietal lobe in the smoking group decreased(voxels size were 55 and 284, respectively), and no gray matter volume (GMV) area increased. The network structure of covariant analysis found that when the inferior parietal lobe as the seed points, the smoking group showed a rising trend in left parietal lobe and left temporal pole, bilateral middle temporal gyrus, left postcentral gyrus and right middle frontal gyrus gray matter volume, and a downtrend in the right side of the left medial frontal gyrus, superior parietal lobe, bilateral temporal gyrus, left cingulate gyrus and left cerebellum (central) compared with the control group. Conclusion: In long-term smokers, there is a volume change of gray matter in the brain structure. Abnormal changes in the structure covariant network of the inferior parietal lobe can lead to impaired brain function in nicotine dependent patients.
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Affiliation(s)
- Y Y Shi
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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14
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Wen BH, Cheng JL, Zhang HX, Zhang ZX, Wang FF, Xue KK. [The value of high resolution diffusion weighted imaging in differentiating benign and malignant epithelial tumors of parotid gland]. Zhonghua Yi Xue Za Zhi 2018; 98:1347-1351. [PMID: 29764037 DOI: 10.3760/cma.j.issn.0376-2491.2018.17.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the diagnostic value of RESOLVE DWI in the evaluation of benign and malignant epithelial tumors of parotid gland. Methods: A total of 106 patients in the First Affiliated Hospital of Zhengzhou University with epithelial tumors of parotid gland confirmed by pathology from July 2015 to October 2017 were retrospectively analyzed. All patients underwent preoperative routine MRI and RESOLVE DWI, the ADC average values were calculated, t test were used to compare the ADC values of benign and malignant epithelial tumors of parotid gland. Diagnostic performance of ADC value was compared using receiver operating characteristic (ROC)curves. Results: All lesions were solitary, including 69 benign epithelial tumors and 37 malignant epithelial tumors. The mean ADC values of pleomorphic adenoma and basal cell adenoma, adenolymphoma and malignant epithelial tumors were (1.47±0.16)×10(-3) mm(2)/s, (0.83±0.19)×10(-3) mm(2)/s and(1.14±0.14)×10(-3) mm(2)/s, the mean ADC value of adenolymphoma lower than the rest of the two groups, there were statistically significant differences among them (P<0.05). Using 0.94×10(-3) mm(2)/s≤ADC value≤1.28×10(-3)mm(2)/s as the critical value for diagnosing malignant epithelial tumors of parotid gland and comparing with pathological results, the result obtained had a sensitivity of 81.1%, specificity of 88.9%. ADC value had high correlations compared with pathological results, kappa value was 0.600. Conclusion: RESOLVE DWI can be applied in differential diagnosis between benign and malignant epithelial tumors of parotid gland.
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Affiliation(s)
- B H Wen
- Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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15
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Zhang Y, Cheng JL, Li Y. [Diffusion tensor imaging study of the protective effect of shRNA on matrix metalloproteinase-9 in middle cerebral artery occlusion rats]. Zhonghua Yi Xue Za Zhi 2018; 98:1176-1182. [PMID: 29690732 DOI: 10.3760/cma.j.issn.0376-2491.2018.15.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To investigate the cerebral protective effect of shRNA down-regulated matrix metalloproteinase-9(MMP-9) on cerebral infarction rats. Methods: 32 SD rats were randomly divided into four groups (8 for each group): group A (sham operation group): the branches of external carotid artery were only separated and ligated and were not be inserted thread; group B (MCAO group): rat MCAO models were made referring to the conventional Longa method; group C (physiological saline group): rats were injected with 5 μl saline two weeks before MCAO models; group D (lentivirus intervention group): rats were injected with 5 μl lentivirus-mediated shRNA two weeks before MCAO models.The diffusion tensor imaging(DTI) was used to evaluate the tissue of cerebral ischemic of middle cerebral artery occlusion(MCAO) in rats.At 4, 8, 12, 18 and 24 h after MCAO, the ADC value and FA value of the lesion side were calculated.The expression of MMP-9 protein in brain tissue of ischemic side was measured by Western blot, and the expression of MMP-9 protein was observed by paraffin section and immunohistochemistry.SPSS 17.0 software was used for statistical processing, and the difference was statistically significant in P<0.05. Results: At 4, 8, 12, 18, 24 h after ischemia, the values of ADC and FA in the ischemic area of the lentivirus intervention group were higher than those in the MCAO group, and the difference was statistically significant (the t values of ADC values at different time points were 8.78, 3.30, 3.58, 4.55 and 13.12, respectively P<0.05.The t values of FA values at different time points were 2.51, 5.87, 6.91, 4.97 and 4.58, respectively P<0.05). The expression of MMP-9 protein increased gradually after focal cerebral ischemia.The expression of MMP-9 protein in lentivirus intervention group was lower than MCAO group.The differences were statistically significant at each point (t values at different time points were 3.55, 6.11, 4.67, 4.63 and 2.77, respectively P<0.05). Conclusion: Lentivirus mediated shRNA inhibits the expression of MMP-9, reduces the vasogenic edema and plays a protective role in cerebral infarction.Magnetic resonance DTI can monitor dynamically the changes of ischemic area in rats with ischemic cerebral infarction.
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Affiliation(s)
- Y Zhang
- Department of First Affiliated Hospital of Zhengzhou University, Zhengzhou 450002, China
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Wang TH, Wang SY, Wang XD, Jiang HQ, Yang YQ, Wang Y, Cheng JL, Zhang CT, Liang WW, Feng HL. Fisetin Exerts Antioxidant and Neuroprotective Effects in Multiple Mutant hSOD1 Models of Amyotrophic Lateral Sclerosis by Activating ERK. Neuroscience 2018; 379:152-166. [PMID: 29559385 DOI: 10.1016/j.neuroscience.2018.03.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/06/2018] [Accepted: 03/08/2018] [Indexed: 11/29/2022]
Abstract
Oxidative stress exhibits a central role in the course of amyotrophic lateral sclerosis (ALS), a progressive neurodegenerative disease commonly found to include a copper/zinc superoxide dismutase (SOD1) gene mutation. Fisetin, a natural antioxidant, has shown benefits in varied neurodegenerative diseases. The possible effect of fisetin in ALS has not been clarified as of yet. We investigated whether fisetin affected mutant hSOD1 ALS models. Three different hSOD1-related mutant models were used: Drosophila expressing mutant hSOD1G85R, hSOD1G93A NSC34 cells, and transgenic mice. Fisetin treatment provided neuroprotection as demonstrated by an improved survival rate, attenuated motor impairment, reduced ROS damage and regulated redox homeostasis compared with those in controls. Furthermore, fisetin increased the expression of phosphorylated ERK and upregulated antioxidant factors, which were reversed by MEK/ERK inhibition. Finally, fisetin reduced the levels of both mutant and wild-type hSOD1 in vivo and in vitro, as well as the levels of detergent-insoluble hSOD1 proteins. The results indicate that fisetin protects cells from ROS damage and improves the pathological behaviors caused by oxidative stress in disease models related to SOD1 gene mutations probably by activating ERK, thereby providing a potential treatment for ALS.
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Affiliation(s)
- T H Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - S Y Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - X D Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - H Q Jiang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Y Q Yang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Y Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - J L Cheng
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - C T Zhang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - W W Liang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - H L Feng
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China.
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Zhang Y, Li YL, Cheng JL, Dong AK, Xu K, Li YL. [Resting-state network evaluation of chronic smokers by functional magnetic resonance imaging.]. Zhonghua Yi Xue Za Zhi 2017; 97:3724-3728. [PMID: 29325327 DOI: 10.3760/cma.j.issn.0376-2491.2017.47.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To explore the neuromechanism of nicotine smoking, we use independent component analysis (ICA) of resting-state functional magnetic resonance imaging (fMRI) to investigate the differences of functional connectivity of resting-state networks (RSN) in chronic smokers. Methods: Forty-five chronic smokers and thirty-four age and gender matched normal nonsmoking controls experienced resting-state fMRI scanning in 3.0T MRI scanner.Differences of the function connection in each RSN between chronic smokers group and nonsmoking controls group were analyzed by SPM software which was based on Matlab platform. Results: Compared with normal nonsmoking controls, changes of functional connectivity within each RSN in chronic smokers: (1) medial visual network: functional connectivity decreased in right cuneus (t=4.17, P<0.05) and left calcarine (t=3.08, P<0.05); (2) lateral visual network: decreased in left gyrus occipital superior (t=3.42, P<0.05); (3) occipital pole visual network: decreased in right gyrus occipital medius and left gyrus occipital medius (t=3.58, P<0.05); (4) dorsal attention network (DAN): increased in right gyrus occipital superior (t=3.42, P<0.05); (5) left frontoparietal network: decreased in left inferior parietal lobe (t=3.77, P<0.05); (6) right frontoparietal network: increased in right gyrus frontalis medius (t=3.42, P<0.05). Conclusion: There are some RSNs changes of chronic smokers compared with normal nonsmoking controls, with multiple brain regions functional connectivity abnormalities.
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Affiliation(s)
- Y Zhang
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Zhang Y, Dong AK, Cheng JL, Li YL, Zhu CD, Xu K. [Structural changes of brain gray matter in male long-term smokers under magnetic resonance imaging]. Zhonghua Yi Xue Za Zhi 2017; 97:3562-3566. [PMID: 29275596 DOI: 10.3760/cma.j.issn.0376-2491.2017.45.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate gray matter structure changes in long-term male smokers by voxel-based morphological method. Methods: Fifty long-term smokers and 37 non-smoking healthy volunteers were scanned with Siemens Skyro 3.0T magnetic resonance scanner from August 2014 to August 2016. The subjects underwent routine MRI (excluding intracranial lesions) sequences and 3D-T1 structural sequences (3D-mprage). SPM8 pretreatment based on Matlab was used to analyze the structural data. All of the data were analyzed by SPM8 software. The data were compared between groups with independent sample t test. Spearman correlation analysis was used to analyze the relationship between gray matter volume (GMV) and smoking data of two groups. Results: The gray matter volume of bilateral thalamic, right supramarginal gyrus, left supramarginal gyrus and left putamen of smoking group were (0.55±0.07), (0.40±0.05), (0.48±0.07) and (0.14±0.04) voxels, respectively, and the gray matter volume of the corresponding gyri in control group were (0.61±0.09), (0.43±0.06), (0.54±0.07) and (0.16±0.03) voxels, respectively; and the gray matter volume of smoking group were all lower than those in control group (t=-3.81, -3.51, -3.86, -2.33, all P<0.05), family wise error (FWE) correction (P<0.05). The gray matter volume of bilateral thalamus, right supramarginal gyrus and left putamen was negatively correlated with smoking index (r=-0.368, -0.189, -0.274, all P<0.05), and also negatively correlated with smoking years (r=-0.391, -0.221, -0.355, all P<0.05), and bilateral thalamus gray matter volume was negatively correlated with daily cigarette smoking (r=-0.186, P<0.05). Conclusion: The changes of brain structure of smokers mainly occur on reward-related pathways and marginal systems, and related to accumulation of cigarette smoking.
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Affiliation(s)
- Y Zhang
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Guo YF, Cheng JL, Zhang Y, Zhang CY, Wang WJ. [Value of diffusion-weighted imaging in differentiating sellar malignant germ cell tumors from raniopharyngioma]. Zhonghua Yi Xue Za Zhi 2017; 97:2903-2907. [PMID: 29050159 DOI: 10.3760/cma.j.issn.0376-2491.2017.37.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the diagnostic value of diffusion-weighted imaging (DWI) and apparent diffusion coefficient(ADC) values in the differentiation of sellar malignant germ cell tumors and raniopharyngioma. Methods: This retrospective study included 36 patients(14 cases of malignant germ cell tumor and 22 patients with raniopharyngioma) with histopathologically-confirmed sellar tumors from January 2013 to April 2017 in the First Affiliated Hospital of Zhengzhou University.All patients underwent conventional MRI and DWI before the treatment. ADC maps were reconstructed, and ADC values of the sellar lesions were calculated and compared between the groups. Diagnostic value of ADC was evaluated by receiver operating characteristic(ROC) curves. Results: The mean ADC values of malignant germ cell tumors were significantly lower than that in raniopharyngioma[(0.93±0.23)×10(-3) mm(2)/s vs (1.69±0.21)×10(-3) mm(2)/s, t=-10.19, P<0.01]. The area under the ROC curves of ADC values diagnosing malignant germ cell tumors and raniopharyngioma was 0.987. The optimal cutoff values of ADC for differential diagnosis of malignant germ cell tumors and raniopharyngioma was 1.52×10(-3) mm(2)/s, the sensitivity, specificity and accuracy was 81.2%, 100%, 88.9%, respectively. ADC value had a high consistency with pathological results (Kappa value was 0.887). Conclusion: Malignant germ cell tumors and raniopharyngioma have different ADC value, which can improve the diagnostic accuracy.
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Affiliation(s)
- Y F Guo
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Niu QH, Cheng JL, Song XQ, Yang L, Chu CY, Liu H, Zhang LF, Li Y, Li YH. [Correlation between the clinical symptoms and the activation pattern of brain neurons in patients with obsessive-compulsive disorder]. Zhonghua Yi Xue Za Zhi 2017; 97:1290-1294. [PMID: 28482427 DOI: 10.3760/cma.j.issn.0376-2491.2017.17.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the correlation between clinical symptoms of patients with obsessive-compulsive disorder (OCD) and the activation pattern of brain neurons at resting. Methods: A total of 26 patients diagnosed with fist-episode OCD were selected and underwent functional magnetic resonance imaging (fMRI) scanning at resting state. The fMRI data were processed by statistical parametric mapping (SPM8), Data Processing Assistant for Resting-State fMRI Analysis Toolkit (DPARSFA), and Resting State fMRI Data Analysis Toolkit (REST) software. With age as concomitant variable, Pearson Correlation Analysis was adopted to study the correlation between clinical symptoms (obsessive thoughts and compulsive behavior) of patients and their regional homogeneity ( ReHo) values of whole brain. Results: The positive correlation between obsessive thoughts score of patients with OCD and ReHo value lied in insular_L, insular_R, cerebellum_L, cerebellum_R, calcarine_L, cuneus_L. The negative correlation between obsessive thoughts score of patients with OCD and ReHo value lied in thalamus_L, precuneus_L, caudate_L, cingulum_R, frontal_R. The positive correlation between compulsive behavior score of patients with OCD and ReHo value lied in temporal_L, frontal_inf_orb_l, frontal_inf_orb_R, frontal_mid_L, precentral_R. The negative correlation between compulsive behavior score of patients with OCD and ReHo value lied in cingulum-L, cingulum-R, caudate_L. Conclusion: Different obsessive-compulsive symptoms has different image foundation, and the dysfunction of cingulate has a major impact on the incidence of both obsessive thoughts and compulsive behavior of OCD patients.
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Affiliation(s)
- Q H Niu
- Department of Psychiatry, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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21
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Li Y, Li MM, Zhang Y, Cheng JL, Shang ZG, Bu CX. [Utility of texture analysis of magnetic resonance imaging in differential diagnosis of common pediatric cerebellar tumors in children]. Zhonghua Yi Xue Za Zhi 2017; 96:1853-5. [PMID: 27356798 DOI: 10.3760/cma.j.issn.0376-2491.2016.23.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To analyze magnetic resonance images of the posterior cranial fossa tumors, and evaluate the texture characteristics of three kinds of children's posterior cranial fossa tumors by support vector machine (SVM). METHODS From May 2008 to August 2015, a total of 76 patients with children's posterior cranial fossa tumors in First Affiliated Hospital of Zhengzhou University were retrospectively analyzed, texture analysis was performed on the three types of tumors. RESULTS The 5 texture parameters extracted from the gray level co-occurrence matrix had at least 3 parameters which had statistically significant difference between the two different classes of data sets (P<0.05). For all kinds of data sets, the variance parameters of gray value of ROI region had statistically significant differences.The accuracy rate of SVM test in the remarkable difference of the ependymomas and medulloblastomas, the ependymomas and astrocytomas and the medulloblastomas and astrocytomas was 86.15%±4.16%, 73.63%±5.82% and 74.32%±5.85%, respectively. CONCLUSION The analysis of texture features can provide more quantitative information which could provide a new thought and method for the differential diagnosis of tumors in the posterior cranial fossa.
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Affiliation(s)
- Y Li
- Department of Magnetic Resonance, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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22
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Wang WJ, Cheng JL, Zhang Y. [Primary malignant melanoma misdiagnosed as meningioma in intracranial: a case report]. Zhonghua Zhong Liu Za Zhi 2017; 39:200-201. [PMID: 28316219 DOI: 10.3760/cma.j.issn.0253-3766.2017.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- W J Wang
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J L Cheng
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Zhang
- Department of MRI, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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23
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Cheng JL, Vermeulen N, Sipe JE. Second order optical nonlinearity of graphene due to electric quadrupole and magnetic dipole effects. Sci Rep 2017; 7:43843. [PMID: 28262762 PMCID: PMC5338322 DOI: 10.1038/srep43843] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/30/2017] [Indexed: 11/09/2022] Open
Abstract
We present a practical scheme to separate the contributions of the electric quadrupole-like and the magnetic dipole-like effects to the forbidden second order optical nonlinear response of graphene, and give analytic expressions for the second order optical conductivities, calculated from the independent particle approximation, with relaxation described in a phenomenological way. We predict strong second order nonlinear effects, including second harmonic generation, photon drag, and difference frequency generation. We discuss in detail the controllability of these effects by tuning the chemical potential, taking advantage of the dominant role played by interband optical transitions in the response.
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Affiliation(s)
- J L Cheng
- Brussels Photonics Team (B-PHOT), Department of Applied Physics and Photonics (IR-TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium.,Department of Physics and Institute for Optical Sciences, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 1A7, Canada
| | - N Vermeulen
- Brussels Photonics Team (B-PHOT), Department of Applied Physics and Photonics (IR-TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
| | - J E Sipe
- Department of Physics and Institute for Optical Sciences, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 1A7, Canada
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24
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Wei CL, Cheng JL, Khan MA, Yang LQ, Imani S, Chen HC, Fu JJ. An improved DNA marker technique for genetic characterization using RAMP-PCR with high-GC primers. Genet Mol Res 2016; 15:gmr8721. [PMID: 27706740 DOI: 10.4238/gmr.15038721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Random amplified polymorphic DNA (RAPD) is a widely used molecular marker technique. As traditional RAPD has poor reproducibility and productivity, we previously developed an improved RAPD method (termed RAMP-PCR), which increased the reproducibility, number of bands, and efficiency of studies on polymorphism. To further develop the efficiency of this method, we used high-GC content primers for improved RAMP-PCR with DNA samples from Lonicera japonica. Comparison of amplification profiles obtained by standard RAPD primers with those obtained by regular PCR and RAMP-PCR, and high-GC primers with regular PCR and RAMP-PCR showed that the average number of bands and polymorphisms per primer gradually and significantly increased (from 6.4 to 15.0 and from 4.6 to 10.2, respectively). Cluster dendrograms showed similar results, indicating that this new method is consistent and reproducible. A total of 22 samples from different species, including plants, animals, and humans, were used for RAMP-PCR with high-GC primers. Multiple bands were successfully amplified from all samples, demonstrating that this method is a reliable technique with consistent results and may be of general interest in studies on different genera and species. We developed highly effective DNA markers, which can provide a more effective and potentially valuable approach than traditional RAPD for the genetic identification of various organisms, particularly of medicinal plants.
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Affiliation(s)
- C L Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China.,The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - J L Cheng
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - M A Khan
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - L Q Yang
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - S Imani
- The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha City, Hunan Province, China
| | - J J Fu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China .,The Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China .,Judicial Authentication Center, Southwest Medical University, Luzhou City, Sichuan Province, China
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25
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Cheng JL, Yin ZC, Mei ZQ, Wei CL, Chen HC, Wu XS, Fu JJ. Development and significance of SCAR marker QG12-5 for Canarium album (Lour.) Raeusch by molecular cloning from improved RAPD amplification. Genet Mol Res 2016; 15:gmr8347. [PMID: 27706623 DOI: 10.4238/gmr.15038347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sequence-characterized amplified region (SCAR) is a valuable molecular marker for the genetic identification of any species. This marker is mainly derived from molecular cloning of random amplified polymorphic DNA (RAPD). We have previously reported the use of an improved RAPD technique for the genetic characterization of different samples of Canarium album (Lour.) Raeusch (C. album). In this study, DNA fragments were amplified using improved RAPD amplified from different samples of C. album. The amplified DNA fragment was excised, purified from an agarose gel and cloned into a pGM-T vector; subsequently, a positive clone, called QG12-5 was identified by PCR amplification and enzymatic digestion and sequenced by Sanger di-deoxy sequencing method. This clone was revealed consisting of 510 nucleotides of C. album. The SCAR marker QG12-5 was developed using specifically designed PCR primers and optimized PCR conditions. This SCAR marker expressed seven continuous "TATG" [(TATG)n] tandem repeats, which was found to characterize C. album. Subsequently, this novel SCAR marker was deposited in GenBank with accession No. KT359568. Therefore, we successfully developed a C. album-specific SCAR marker for the identification and authentication of different C. album species in this study.
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Affiliation(s)
- J L Cheng
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Z C Yin
- Key Laboratory of Genetics and Birth Health of Hunan Province, Family Planning Institute of Hunan Province, Changsha, Hunan, China.,Key Lab of MOE for Development Biology and Protein Chemistry, Center for Heart Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Z Q Mei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - C L Wei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan, China
| | - X S Wu
- Key Lab of MOE for Development Biology and Protein Chemistry, Center for Heart Development, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - J J Fu
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.,Judicial Authentication Center, Southwest Medical University, Luzhou, Sichuan, China
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26
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Khan MA, Cheng JL, Mei ZQ, Wei CL, Fu JJ. Development of two novel specific SCAR markers by cloning improved RAPD fragments from the medicinal mushroom Ganoderma lucidium (Leysser: Fr) Karst. Genet Mol Res 2016; 15:gmr8536. [PMID: 27706590 DOI: 10.4238/gmr.15038536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Development of sequence-characterized amplified region (SCAR) markers from random-amplified polymorphic DNA (RAPD) fragments is a valuable molecular approach for the genetic identification of different species. By using SCAR markers, molecular analysis is reduced to a simple polymerase chain reaction (PCR) analysis using primers designed from the amplicon sequence of RAPD. In this study, the DNA fragments from an improved RAPD amplification of Ganoderma species were cloned into a pGM-T vector; positive clones were identified by PCR amplification and enzymatic digestion, and finally, DNA fragments were sequenced using the Sanger sequencing method for developing the SCAR markers. Two SCAR markers, named LZ4-1 with 534 nucleotides, and LZ5-2 with 337 nucleotides were identified, which are specific to Ganoderma lucidium (Leysser: Fr) Karst species. BLAST of these two nucleotide sequences in the GenBank database showed no identity to other species. We deposited these sequences into the GenBank database (LZ4-1 accession No. KM391933, LZ5-2 accession No. KM391934). PCR assays confirmed them as novel molecular markers for G. lucidium (Leysser: Fr) Karst, which might be used for genetic authentication of adulterant samples. Thus, our study developed two specific SCAR markers for identifying and distinguishing the medicinal mushroom G. lucidium (Leysser: Fr) Karst from other Ganoderma species.
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Affiliation(s)
- M A Khan
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - J L Cheng
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Z Q Mei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - C L Wei
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - J J Fu
- Research Center for Preclinical Medicine, Southwest Medical University, Luzhou, Sichuan, China .,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China .,Judicial Authentication Center, Southwest Medical University, Luzhou, Sichuan, China
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27
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Chen LP, Zhao H, Lyu B, Cheng JL. [Environmental factors and primary biliary cirrhosis]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:541-544. [PMID: 27784437 DOI: 10.3760/cma.j.issn.1007-3418.2016.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The complex interplay between immune factors and genetic susceptibility plays an essential role in autoimmune diseases. This is especially true for primary biliary cirrhosis (PBC). PBC is an autoimmune cholestatic liver disease characterized by the destruction of the small intrahepatic bile ducts and the presence of high-titer antimitochondrial antibodies (AMA). Among the currently known risk factors, genetic predisposition remains to be the dominant one. However, it is insufficient to explain the different geographic distributions of PBC and the incomplete concordance in identical twins. This suggests an association between specific environmental factors and the development of PBC. Nevertheless, a clear and rational association of environmental factors with primary biliary cirrhosis has not yet been fully elucidated. Our current understanding of the environmental triggers of PBC is limited to numerous suspected factors involved in its development, such as xenobiotics, electrophilic drugs, infection, and other physical, chemical, and even biological factors. Although the factors leading to the breakdown of immune tolerance in PBC are still largely unknown, related geoepidemiological studies may help us better understand the impact of the environment. In addition, a better understanding of the interplay between environmental factors and PBC is the critical step toward improving our management and control of PBC and autoimmunity in general.
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Affiliation(s)
- L P Chen
- Department of Gastroenterology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - H Zhao
- Department of Gastroenterology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - B Lyu
- Institute of Liver Neoplasm, Zhongshan Hospital, Fudan University, Shanghai 201508, China
| | - J L Cheng
- Department of Gastroenterology, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
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28
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Cheng JL, Li J, Qiu YM, Wei CL, Yang LQ, Fu JJ. Development of novel SCAR markers for genetic characterization of Lonicera japonica from high GC-RAMP-PCR and DNA cloning. Genet Mol Res 2016; 15:gmr7737. [PMID: 27173286 DOI: 10.4238/gmr.15027737] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Sequence-characterized amplified region (SCAR) markers were further developed from high-GC primer RAMP-PCR-amplified fragments from Lonicera japonica DNA by molecular cloning. The four DNA fragments from three high-GC primers (FY-27, FY-28, and FY-29) were successfully cloned into a pGM-T vector. The positive clones were sequenced; their names, sizes, and GenBank numbers were JYHGC1-1, 345 bp, KJ620024; YJHGC2-1, 388 bp, KJ620025; JYHGC7-2, 1036 bp, KJ620026; and JYHGC6-2, 715 bp, KJ620027, respectively. Four novel SCAR markers were developed by designing specific primers, optimizing conditions, and PCR validation. The developed SCAR markers were used for the genetic authentication of L. japonica from its substitutes. This technique provides another means of developing DNA markers for the characterization and authentication of various organisms including medicinal plants and their substitutes.
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Affiliation(s)
- J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China
| | - J Li
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China
| | - Y M Qiu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China.,Maternal and Child Health Care Hospital of Zigong, Zigong, Sichuan, China
| | - C L Wei
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - L Q Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China.,Judicial Authentication Center, Sichuan Medical University, Luzhou City, Sichuan, China
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29
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Yang WC, Zhu L, Qiu YM, Zhou BX, Cheng JL, Wei CL, Chen HC, Li LY, Fu XD, Fu JJ. Isolation and analysis of cell-free fetal DNA from maternal peripheral blood in Chinese women. Genet Mol Res 2015; 14:18078-89. [PMID: 26782455 DOI: 10.4238/2015.december.22.34] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Non-invasive prenatal diagnosis is used to detect the genetic material of the fetus by isolating the cell-free fetal DNA (cffDNA) from maternal peripheral blood. In order to establish an isolation method for cffDNA from maternal peripheral blood in Chinese women, the cffDNA was acquired with a two-step centrifugation using a QlAamp DNA Blood mini kit. The SRY gene of plasma DNA was amplified by polymerase chain reaction (PCR). Real-time quantitative PCR was used to measure the concentration of cffDNA in maternal peripheral blood in different pregnant women. The results of the SRY gene amplification of plasma DNA from pregnant women was the same as that of the amniocyte DNA. The average concentration of cffDNA in maternal peripheral blood of pregnant women in different gestational stages was 0.98 ng/mL (0.26-1.49 ng/mL), 1.43 ng/mL (0.46- 2.34 ng/mL), and 1.95 ng/mL (0.65-6.81 ng/mL) from early, middle, and late gestational stages, respectively. The mean of cffDNA from total DNA in plasma in different stages of gestation was 22.28% (9.86-27.81%). The lowest concentration of DNA amplified by nested-PCR in our research was 10-4-10-3 ng/μL. The isolation method for cffDNA from maternal peripheral blood was successfully established and further research into its applications will be conducted.
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Affiliation(s)
- W C Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - L Zhu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - Y M Qiu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,Maternal and Child Health Care Hospital of Zigong, Zigong, Sichuan Province, China
| | - B X Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China
| | - C L Wei
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China
| | - H C Chen
- Department of Biochemistry, School of Life Sciences & the State Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan Province, China
| | - L Y Li
- Institute of Reproduction and Stem Cell Engineering, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China
| | - X D Fu
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou City, Sichuan Province, China.,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau (SAR), China.,Department of Obstetrics and Gynecology, First Affiliated Hospital of Sichuan Medical University, Luzhou, Sichuan Province, China
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Wei CL, Cheng JL, Yang WC, Li LY, Cheng HC, Fu JJ. Identification of the origin of marker chromosomes by two-color fluorescence in situ hybridization and polymerase chain reaction in azoospermic patients. Genet Mol Res 2015; 14:14488-95. [PMID: 26600507 DOI: 10.4238/2015.november.18.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Y chromosomal microdeletions at the azoospermia factor locus and chromosome abnormalities have been implicated as the major causes of idiopathic male infertility. A marker chromosome is a structurally abnormal chromosome in which no part can be identified by cytogenetics. In this study, to identify the origin of the marker chromosomes and to perform a genetic diagnosis of patients with azoospermia, two-color fluorescence in situ hybridization (FISH) and polymerase chain reaction (PCR) techniques were carried out. The marker chromosomes for the two patients with azoospermia originated in the Y chromosome; it was ascertained that the karyotype of both patients was 46,X, ish del(Y)(q11)(DYZ3+, DXZ1-). The combination of two-color FISH and PCR techniques is an important method for the identification of the origin of marker chromosomes. Thus, genetic counseling and a clear genetic diagnosis of patients with azoospermia before intracytoplasmic sperm injection or other clinical managements are important.
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Affiliation(s)
- C L Wei
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - W C Yang
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - L Y Li
- Insistitute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - H C Cheng
- Insistitute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
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31
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Yang WC, Zhu L, Zhou BX, Tania S, Zhou Q, Khan MA, Fu XL, Cheng JL, Lv HB, Fu JJ. Establishment and rapid detection of a heterozygous missense mutation in the CACNA1F gene by ARMS technique with double-base mismatched primers. Genet Mol Res 2015; 14:11480-7. [PMID: 26436388 DOI: 10.4238/2015.september.25.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Retinitis pigmentosa (RP) is a retinal degenerative disorder that often causes complete blindness. Mutations of more than 50 genes have been identified as associated with RP, including the CACNA1F gene. In a recent study, by employing next-generation sequencing, we identified a novel mutation in the CACNA1F gene. In this study, we used the amplification refractory mutation system (ARMS) and identified a single nucleotide change c.1555C>T in exon 13 of the CACNA1F gene, leading to the substitution of arginine by tryptophan (p.R519W) in a Chinese individual affected by RP. This study actually confirms this novel mutation, and establishes the ARMS technique for the detection of mutations in RP.
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Affiliation(s)
- W C Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - L Zhu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - B X Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - S Tania
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - Q Zhou
- Department of Ophthalmology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - M A Khan
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - X L Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - J L Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
| | - H B Lv
- Department of Ophthalmology, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan, China
| | - J J Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical Medicine, Luzhou Medical College, Luzhou, Sichuan, China
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Abstract
In order to investigate the association between osteoprotegerin (OPG) gene polymorphisms and rheumatoid arthritis (RA), we studied OPG rs3102735 T/C and rs2073618 G/C polymorphisms in a Chinese Han population comprising 574 patients with RA and 804 controls. Genotyping by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was conducted. Our data indicated that OPG rs3102735 T/C and rs2073618 G/C polymorphisms were not associated with the risk of RA. However, among older patients (≥55 years), patients with the OPG rs3102735 TC (TC vs TT: OR = 0.68, 95%CI = 0.49‑0.96, P = 0.029) and TC/CC (TC+CC vs TT: OR = 0.69, 95%CI = 0.49‑0.96, P = 0.026) genotypes showed a significantly lower risk of RA than patients with the TT genotype, while patients with the OPG rs2073618 GC (GC vs GG: OR = 1.53, 95%CI = 1.13‑2.07, P = 0.006) and GC/CC (GC+CC vs GG: OR = 1.43, 95%CI = 1.07‑1.92, P = 0.015) genotypes showed a significantly higher risk of RA than patients with the GG genotype. We also found a significantly increased risk of RA associated with the OPG rs2073618 GC (GC vs GG: OR = 1.44, 95%CI = 1.07‑1.93, P = 0.018) and GC/CC (GC+CC vs GG: OR = 1.39, 95%CI = 1.04‑1.86, P = 0.024) genotypes among functional class III+IV patients. Our results were obtained from only a moderate-sized sample and, thus, a larger study with a more diverse ethnic population is needed to confirm these results.
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Affiliation(s)
- X H Ye
- Department of Endocrinology, Affiliated Hospital of Nanjing Medical University, Changzhou Second People's Hospital, Changzhou, Jiangsu, China
| | - J L Cheng
- Department of Endocrinology, Affiliated Hospital of Nanjing Medical University, Changzhou Second People's Hospital, Changzhou, Jiangsu, China
| | - R P Liu
- Department of Orthopedics, Affiliated Hospital of Nanjing Medical University, Changzhou Second People's Hospital, Changzhou, Jiangsu, China
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Fu JJ, Mei ZQ, Tania M, Yang LQ, Cheng JL, Khan MA. Development of RAPD-SCAR markers for different Ganoderma species authentication by improved RAPD amplification and molecular cloning. Genet Mol Res 2015; 14:5667-76. [PMID: 26125765 DOI: 10.4238/2015.may.25.19] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The sequence-characterized amplified region (SCAR) is a valuable molecular technique for the genetic identification of any species. This method is mainly derived from the molecular cloning of the amplified DNA fragments achieved from the random amplified polymorphic DNA (RAPD). In this study, we collected DNA from 10 species of Ganoderma mushroom and amplified the DNA using an improved RAPD technique. The amplified fragments were then cloned into a T-vector, and positive clones were screened, indentified, and sequenced for the development of SCAR markers. After designing PCR primers and optimizing PCR conditions, 4 SCAR markers, named LZ1-4, LZ2-2, LZ8-2, and LZ9-15, were developed, which were specific to Ganoderma gibbosum (LZ1-4 and LZ8-2), Ganoderma sinense (LZ2-2 and LZ8-2), Ganoderma tropicum (LZ8-2), and Ganoderma lucidum HG (LZ9-15). These 4 novel SCAR markers were deposited into GenBank with the accession Nos. KM391935, KM391936, KM391937, and KM391938, respectively. Thus, in this study we developed specific SCAR markers for the identification and authentication of different Ganoderma species.
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Affiliation(s)
- J J Fu
- Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - Z Q Mei
- Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - M Tania
- Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - L Q Yang
- Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
| | - J L Cheng
- Research Center for Preclinical Medicine, Sichuan Medical University, Luzhou, Sichuan Province, China
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Abstract
We calculate the dc current induced second harmonic generation in doped graphene using the semiconductor Bloch equations under relaxation time approximations. We find that the maximum value of the effective second order susceptibility appears when the fundamental photon energy matches the chemical potential. For a surface current density 1.1 × 10(3) A/m and a relaxation time at optical frequencies of 13 fs, the effective second order susceptibility χeff(2);xxx can be as large as 10(-7)m/V for h̄ω = 0.2 eV or 10(-8) m/V for h̄ω = 0.53 eV.
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Abstract
A realistic pseudopotential model is introduced to investigate the phonon-induced spin relaxation of conduction electrons in bulk silicon. We find a surprisingly subtle interference of the Elliott and Yafet processes affecting the spin relaxation over a wide temperature range, suppressing the significance of the intravalley spin-flip scattering, previously considered dominant, above roughly 120 K. The calculated spin relaxation times T1 agree with the spin resonance and spin injection data, following a T(-3) temperature dependence. The valley anisotropy of T1 and the spin relaxation rates for hot electrons are predicted.
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Affiliation(s)
- J L Cheng
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China
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Abstract
BACKGROUND An improved light activated disinfection technique utilizing a specific photosensitizer formulation, liquid optical-conduit, oxygen-carrier and light energy of appropriate wavelength has been introduced recently. This study tested the efficacy of this improved light activated disinfection on ex vivo biofilms of Enterococcus faecalis at two different stages of maturation. METHODS Eighty-five tooth sections were prepared and endodontic biofilm of E. faecalis were grown within the root canal. In stage 1, conventional light activated disinfection (LAD), chemical disinfectant (sodium hypochlorite) and improved LAD were tested on four-day-old (immature) biofilms. In stage 2, conventional LAD, improved LAD and chemomechanical disinfection (alone and in combination with improved LAD) were tested on four-week-old (mature) biofilms. RESULTS Sodium hypochlorite and improved LAD showed the ability to significantly inactivate bacteria in four-day-old biofilms when compared to the control and LAD (p < 0.05). Inactivation of bacteria from deeper dentine was higher in improved LAD than sodium hypochlorite. In four-week-old biofilms, a combination of chemomechanical disinfection and improved LAD produced significant bacterial killing compared to either chemomechanical disinfection or improved LAD alone. CONCLUSIONS This study highlighted the potential of improved LAD to kill bacteria within dentinal tubules. In combination with chemomechanical preparation, the improved LAD significantly inactivated four-week-old biofilm bacteria.
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Affiliation(s)
- Z Lim
- Restorative Dentistry, Faculty of Dentistry, National University of Singapore, Singapore
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Chen JJ, Peck K, Hong TM, Yang SC, Sher YP, Shih JY, Wu R, Cheng JL, Roffler SR, Wu CW, Yang PC. Global analysis of gene expression in invasion by a lung cancer model. Cancer Res 2001; 61:5223-30. [PMID: 11431363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Metastasis is a complicated multistep process that involves interactions between cancer cells and their surrounding microenvironments. Previously, we have established a series of lung adenocarcinoma cell lines with varying degrees of invasiveness. Tracheal graft assay confirmed that cell lines with higher in vitro invasiveness had greater in vivo invasive potential. In this study, we used these model cell lines to identify invasion-associated genes using cDNA microarray with colorimetric detection. A more invasive subline, CL 1-5-F 4, derived from metastatic lung tumor of severe combined immunodeficient mice inoculated with CL 1-5 cells, was combined with CL 1-0, CL 1-1, and CL 1-5 in cDNA microarray screening. cDNA microarray membranes, each containing 9600 nonredundant expressed sequence tag clones, were used to identify differentially expressed genes in these cell lines. For statistical analysis, self-organizing map algorithm was performed to identify the expression patterns. Positive correlation between gene expression levels and cell line invasiveness was found in 2.9% of the 9600 putative genes. On the other hand, negative correlation was found in 3.3% of the genes. The trends of expression of some of the genes were also confirmed by Northern hybridization and flow cytometry. Our data demonstrated that genes related to cell adhesion, motility, angiogenesis, signal transduction, and some other expressed sequence tag genes may play significant roles in the metastasis process. These results substantiate the model system with which one can identify invasion-associated genes by using cDNA microarray and cancer cell lines of different invasiveness. This technique may allow us to explore complex interactions between multiple genes that orchestrate the process of cancer metastasis.
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Affiliation(s)
- J J Chen
- Department of Clinical Research, National Taiwan University Hospital, Taipei, Taiwan 100, Republic of China
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Cheng JL, Liu BL, Zhang Y, Tong WB, Yan Z, Feng BF. Hepatitis C virus in human B lymphocytes transformed by Epstein-Barr virus in vitro by in situ reverse transcriptase-polymerase chain reaction. World J Gastroenterol 2001; 7:370-5. [PMID: 11819792 PMCID: PMC4688724 DOI: 10.3748/wjg.v7.i3.370] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To study persistence and replication of hepatitis C virus (HCV) in patients' peripheral blood mononuclear cells (PBMC) cultured in vitro.
METHODS: Epstein-Barr virus (EBV) was used to transform the hepatitis C virus from a HCV positive patient to permanent lymphoblastoid cell lines (LCL). Positive and negative HCV RNA strands of the cultured cells and growth media were detected by reverse transcriptase-polymerase chain reaction (RT-PCR) each month. Core and NS5 proteins of HCV were further tested using immunohistochemical SP method and in situ RT-PCR.
RESULTS: HCV RNA positive strands were consistently detected the cultured cells for one year. The negative-strand RNA in LCL cells and the positive-strand RNA in supernatants were observed intermittently. Immunohistochemical results medicated expression of HCV NS3 and C proteins in LCL cytoplasm mostly. The positive signal of PCR product was dark blue and mainly localized to the LCL cytoplasm. The RT-PCR signal was eliminated by overnight RNase digestion but not DNase digestion.
CONCLUSION: HCV may exist and remain functional in a cultured cell line for a long period.
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Affiliation(s)
- J L Cheng
- Institute of Hepatology, People's Hospital, Medical Center of Beijing, University of Beijing, China
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Abstract
AIM: To examine the expression of activin A, a member of the transforming growth factor (TGF-β) superfamily, recently has been reported to beoverexpressed in liver cirrhosis, in the course of carbon tetrachloride-induced rat hepatic fibrosis.
METHODS: Hepatic fibrosis was induced in rats by subcutaneous injections of 40% carbon tetrachloride oily solution for a period of 1 to 7 weeks. At the end of 1, 2, 3, 4, 5, 6 and 7 weeks after carbon tetrachloride injections, the rats were killed in group (6-10 rats each time) for study. The activin A messenger RNA expression and its protein localization were assessed by semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) and immunohistochemistry.
RESULTS: The normal rat liver expressed activin A mRNA and protein, and its expression was transiently decreased and became undetectable after carbon tetrachloride injections for 2 or 3 weeks and then increased gradually. After injection of carbon tetrachloride for 6 and 7 weeks, activin A mRNA and protein expressions were significantly enchanced in rat liver. Compared with that of the normal rat liver. Activin A mRNA expression levels in rats receiving carbon tetrachloride injections for 6 and 7 weeks were 1.6 and 2.2 times that of those in normal rat liver respectively (0.456 ± 0.094 vs 0.286 ± 0.0670, P < 0.01; 0.620 ± 0.134 vs 0.286 ± 0.0670, P < 0.01). Immunohistochemistry showed that activin A expressed in hepatocytes of normal liver, and its expression was decreased in rats receiving carbon tetrachloride for 2 or 3 weeks. Compared with normal liver, activin A expression distribution mode changed in fibrotic liver, being increased significantly in hepatocytes around fibrotic areas.
CONCLUSION: Activin A expression was increased in late stage of hepatic fibrosis, and this may be involved in hepatic fibrosis formation in this period.
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Affiliation(s)
- X Huang
- Gastroenterology Department, Xinhua Hospital, Shanghai Second Medical University, Shanghai 200092, China
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Abstract
Resting objects can be described according to the physical forces operating on them, forces that are balanced in static scenes. We hypothesized that in a related way, the perception of static scenes and objects might involve a representation of underlying dynamics. In our first experiments, subjects were shown a picture of a plant resting upon a table or hanging from a hook, followed by a picture of the plant in the same position without the supporting table or hook. Subjects attempted to remember the position of the plant and were then shown a third display, in which the plant was in the same position or was slightly above or slightly below the original position. We found that subjects made more errors for test displays showing the plant slightly below, as compared with displays showing the plant slightly above, the original position. That is, memory for the position of the previously supported object was distorted in the direction consistent with what would happen if the plant was to lose its source of support in real life. This effect depends on the initial display of support; in Experiment 2 we found no memory asymmetry when the plant was initially displayed without support. We replicated the results of Experiments 1 and 2 with a new stimulus set and modified procedure in Experiment 3. In our fourth study we experimented with a slightly different stable situation: a spring with a box on top of it. We found that subjects misremembered the spring as either more compressed or less compressed as predicted by the implied dynamics of the display sequence. We discuss issues raised by our findings, including the possibility that the conscious experience of concreteness in static scenes stems from the representation of underlying forces.
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Affiliation(s)
- J J Freyd
- Department of Psychology, University of Oregon, Eugene 97403
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Chen RT, Lu ZX, Cheng JL, Xu B. [Study on antidotes of homoharringtonine]. Zhongguo Yao Li Xue Bao 1988; 9:477-80. [PMID: 3218544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Affiliation(s)
- J J Freyd
- Department of Psychology, University of Oregon, Eugene 97403
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43
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Zhu ZY, Cheng JL. [Nursing of patients undergoing auto-control ileostomy]. Zhonghua Hu Li Za Zhi 1985; 20:325-6. [PMID: 3854288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Cheng JL. [Use of a device for the decompression, cold-soaking and softening of Chinese medicinal plants]. Zhong Yao Tong Bao 1985; 10:18-9. [PMID: 2937567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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