1.Verification of Ancient and Modern Circling Acupuncture Manipulations
Yuan XU ; Chao WANG ; Jingqing KANG ; Bo CHEN ; Yi GUO
Shanghai Journal of Acupuncture and Moxibustion 2015;(2):173-175
By sorting out the literature on circling acupuncture manipulation in past dynasties’ acupuncture books and famous doctors’ treatises and selecting representative doctors and works, this article summarizes, sorts out and analyzes the definition, performance, action and application of circling acupuncture manipulation and explores its essence in order to promote the inheritance of circling acupuncture manipulation as old and very effective therapy and better its clinical application.
2.Expression of AKT2 gene in human liver cancer and its clinical significance
Yi XIE ; Xin CHEN ; Haixin QIAN ; Wanghe WANG ; Chao ZHANG
Chinese Journal of Hepatobiliary Surgery 2012;18(1):34-36
ObjectiveTo study the expression of AKT2 gene in liver cancer and its relationship to tumor progression.MethodsThe expression of AKT2 in liver cancer was detected by SP immunohistochemical stainin and reverse transcription polymerase chain reaction (RT-PCR).Four patients with benign liver tumors were used as control.ResultsThe positive rates of AKT2 in liver cancer tissue and benign control tissue were 62.5% (28/32) and 0% (0/4),respectively.The difference was significant.In addition,a positive expression of AKT2 correlated significantly with poor differentiation,positive lymph node and distant metastasis.The median survival after surgery was significantly shorter in patients with positive than with negative AKT2 (76d vs 463d).ConclusionThe detection of AKT2 was useful in assessing the progression of liver cancer,in determining prognosis and eventually in rendering a possible target for novel therapeutic strategies.
3.Transient expression and biological activity identification of human pigment epithelium-derived factor in mammary cell line SP2/0
Yi DAI ; Wenjing SHI ; Yuxiong WANG ; Min YU ; Chao CHEN
Chinese Journal of Perinatal Medicine 2011;14(6):347-353
Objective To construct eukaryotic expression plasmid pIRESneo3-pigment epithelium-derived factor (PEDF) and detect its transient expression in SP2/0 cells. Methods Specific primers were designed based on the mature peptide sequence of human PEDF cDNA in the GenBank. Human PEDF gene was cloned into the eukaryotic expression vector pIRESneo3. The PEDF DNA was transfected into SP2/0 with LipofectamineTM 2000. The recombinant human PEDF protein expressed in SP2/0 cell culture supernatant was identified by Western blot and enzyme-linked immunosorbent assay. The biological activity of the recombinant human PEDF was measured by 3-(4,5-dimethylthiazol-z-y1)-2,5-diphenytetrazolium bromide(MTT) method. Results PCR amplification, restriction enzyme digestion and DNA sequencing confirmed that the mature peptide sequence of human PEDF cDNA was successfully cloned into the eukaryotic expression vector pIRESneo3. And the plasmid was transfected into SP2/0 cells, which could secret PEDF. Western blot analysis showed that there was only one obvious band at the position of relative molecular weight of 50 000, and it is equivalent to the expected value. Enzyme-linked immunosorbent assay suggested that the content of PEDF began to rise after transfection, and peaked at 36 h [(0.92±0.04) μg/ml]. The proliferation of human umbilical vein endothelial cell line was significantly inhibited by supernatant after transfection of 36 h (P<0.05). Conclusions The eukaryotic expression plasmid pIRESneo3-PEDF had been successfully constructed and active human PEDF was transiently secreted, which made a foundation for further study of stable expression and purification of PEDF. This protein could be a potential medication for preventing and managing retinopathy of prematurity.
4.Expressions of E-cadherin and N-cadherin in prostate cancer and their implications.
Yi LIU ; Xian-Guo CHEN ; Chao-Zhao LIANG
National Journal of Andrology 2014;20(9):781-786
OBJECTIVETo investigate the differences in the expressions of E-cadherin and N-cadherin between high-risk prostate cancer and low- and medium-risk prostate cancer, and analyze their correlation with the age, serum PSA level, and Gleason score of the patients.
METHODSWe retrospectively analyzed the clinical data of 42 cases of prostate cancer, which were divided into a low- and medium-risk group (group A, n = 15) and a high-risk group (group B, n = 27). We measured the expressions of E-cadherin and N-cadherin by immunohistochemical staining, compared their differences between the two groups, and analyzed their correlation with the age, serum PSA level, and Gleason score of the patients.
RESULTSImmunohistochemical staining showed that the expression of E-cadherin was significantly higher in group A than in B (6.1 +/- 0.51 vs 4.2 +/- 0.37, P < 0.01), and so was its positive rate (73.3% vs 25.9%, P < 0.05). The positive rate of E-cadherin was also markedly higher in the patients with serum PSA < 20 microg/L than in those with serum PSA > or = 20 microg/L (66.7% vs 29.6%, P < 0.05), and so was it in the patients with the Gleason score 5-7 than in those with 8-10 (60.9% vs 21.1%, P < 0.05). On the contrary, the N-cadherin expression was significantly lower in group A than in B (3.7 +/- 0.32 vs 7.5 +/- 0.58, P < 0.01), and so was its positive rate (13.3% vs 59.3%, P < 0.01). The positive rate of N-cadherin was also remarkably lower in the patients with the Gleason score 5-7 than in those with 8-10 (26.1% vs 63.2%, P < 0.05). However, there were no statistically significant differences in the N-cadherin expression between the patients with serum PSA < 20 microg/L and those with serum PSA > or = 20 microg/L (P > 0.05), nor in the expressions of E-cadherin and N-cadherin between the patients aged > or = 70 years and those aged < 70 years (P > 0.05).
CONCLUSIONThe expressions of E-cadherin and N-cadherin are significantly different between high-risk prostate cancer and low- and medium-risk prostate cancer, which suggests that both may correlate with the invasion and metastasis of prostate cancer as well as with the serum PSA level and Gleason score of the patients.
Age Factors ; Aged ; Aged, 80 and over ; Antigens, CD ; metabolism ; Cadherins ; metabolism ; Epithelial-Mesenchymal Transition ; Humans ; Male ; Middle Aged ; Prostate-Specific Antigen ; blood ; Prostatic Neoplasms ; metabolism ; pathology ; Retrospective Studies
5.Comparison of two methods of extrapolating sweep pattern visual evoked potential acuity
Chao, FENG ; Chang-zheng, CHEN ; An-huai, YANG ; Yi-qiao, XING ; Lian-fang, YI
Chinese Journal of Experimental Ophthalmology 2011;29(11):1028-1031
Background Sweep pattern visual evoked potential (SVEP) is an objective method of visual test.There is a clear correlation between SVEP acuity and subjective vision,but they are not identical.Recent studies showed that new regression method can improve the accuracy of SVEP acuity. Objective This trial was to investigate and compare the outcome between amplitude-spatial frequency (A-SP) regression method and amplitudelogVA (A-logVA) regression method in extrapolating the SVEP acuity.Methods SVEP was recorded in 113 eyes of 64 subjects using GT-2000 ( Guo Te,China) with the gratings of 10 different spatial frequency from 0.99 to 12.89 cpd as stimulus.The 1 13 eyes included cataract,glaucoma,corneal disease,optical neuropathy,retinal disease,ocular trauma,refractive error and normal eyes.The correlation were analyzed of SVEP acuity,decimal visual acuity and LogMAR visual acuity.The response were averaged and DFT on the monitor display.SVEP acuity was calculated by extrapolating 0 response amplitude.Results The correlation indices of decimal visual acuity curves obtained by the A-logVA function was 0.663,and that obtained by the A-SP function was 0.705.The positive correlation was seen between subjective decimal visual acuity and A-logVA decimal visual acuity (r =0.540,P< 0.01 ) and between subjective decimal acuity and decimal acuity calculated by the A-SP regression method (r=0.620,P<0.01 ).SVEP decimal acuity calculated by the A-SP function regression method was significantly different from the that calculated by the A-logVA function regression method (Z =-8.688,P<0.01 ).And the correlation indices of LogMAR visual acuity curves obtained by the A-logVA function was 0.733 and that obtained by the A-SP function was 0.715.The positive correlation was found between the subjective LogMAR acuity and that calculated by the A-SP regression method (r=0.700,P< 0.01 ) and between the subjective LogMAR acuity and LogMAR acuity calculated by the A-logVA regression method (r=0.710,P<0.01 ).SVEP LogMAR acuity from A-SP function regression method was significantly different from the LogMAR acuity from A-logVA function regression method (Z=-8.748,P<0.01 ).No significant differences of VA LogMAR were found in gender,eyes,type of disease and age(x2 =2.171,P=0.338;x2 =0.976,P=0.614;x2 =6.032,P=0.420;x2 =14.720,P=0.257 ).Conclusions SVEP can obtain the visual outcome in human.The amplitude-logVA function regression method is more accurate in extrapolating SVEP acuity.
6.Bedside video electroencephalogram within 6 hours after birth in diagnosis of perinatal hypoxic-ischemic encephalopathy and prognosis of short-term neural and behavioral development
Tian QIU ; Pengling QIU ; Tianlan CHEN ; Daokai SUN ; Chao CHEN ; Yi WANG
Chinese Journal of Perinatal Medicine 2010;13(4):307-313
Objective To evaluate the diagnostic value of bedside video electroencephalogram (VEEG) in neonatal within 6 h after birth in diagnosing hypoxic-ischemic encephalopathy ( HIE) and the correlation of bedside VEEG results and early neural and behavioral development. Methods Neonatal severe asphyxia cases were collected and bedside VEEG and HIE were recorded and graduated. The sensitivity and specificity of different VEEG degrees within 6 h after birth were calculated in prognosing HIE degree. The sensitivity and specificity of abnormal VEEG performed within 6 h, the third day and the seventh day after birth, respectively, were compared in prognosing HIE. Neonatal behavior neurological assessment (NBNA) was performed at 7 to 14 days of age, EEG and general movements assessment (GMs), developmental screening test for child under six(DST) when patients were 3 months old, and EEG, Bayley scales of infant development(BSID) at 6 months old to analyze the correlation of bedside VEEG results and early neural and behavioral development. Results Forty-eight severe asphyxia neonatal were included, among which 12 severe asphyxia and 36 HIE, including 14 mild, 12 moderate and 10 severe HIE. There were nine normal and 39(81. 3%) abnormal VEEG including 16 mild, 11 moderate, five severe abnormal and seven inactive VEEG within 6 h after birth. There were 32(88. 9%) abnormal VEEG within 6 h after birth in 36 HIE patients. Significant positive correlation was found between VEEG within 6 h after birth and HIE (r= 0.849, P<0. 01). Severe abnormal and inactive EEG within 6 h after birth showed sensitivity of 100%, specificity of 94. 7% in predicting severe HIE. The sensitivity of VEEG testing at 6 h,3 and 7 d in predicting HIE were 88. 9%, 83. 9% and 28. 6% , correspondingly the specificity were 41.7%, 91. 7% and 100%, respectively. Nine patients with continually abnormal VEEG died in hospital. The NBNA scores of patients with moderate and severe abnormal EEG were significantly lower than those with normal EEG (both P<0. 01), the NBNA scores of patients with severe abnormal EEG were significantly lower than those with moderate abnormal EEG (P<0. 05). Thirty-five patients were followed up in the hospital at 3 months old, and 32 patients had DST >85 and three had DST between 70 and 84 with abnormal EEG. GMs assessment of one of the three patients showed absence of fidget movements, cuing a chance of cerebral palsy. Fourteen patients were followed up in hospital at 6 months old, and seven of them had abnormal EEG, four had abnormal BSID with abnormal EEG. Conclusions VEEG within 6 h after birth shows high sensitivity and specificity in prognosing HIE, and much relates to short-term neural and behavior development.
7.Detection of T cells and melanocytes in skin of patients with psoriasis and their clinical significance
Chao LUAN ; Hao CHEN ; Yonghong YANG ; Yiqun JIANG ; Yi LIU ; Min CHEN ; Baoxi WANG
Chinese Journal of Dermatology 2015;48(4):240-244
Objective To investigate the relationship of CD4+ and CD8+ T cells with melanocytes in skin of patients with psoriasis,and to study their clinical significance.Methods Tissue specimens were obtained from both lesional and nonlesional skin of 29 patients with progressive psoriasis and 5 patients with regressive psoriasis,as well as from normal skin of 6 healthy individuals.Immunohistochemical staining was performed to determine the quantity and distribution of CD4+ T and CD8+ T cells,as well as the quantity of melanocytes and proportion of cells containing pigment granules in the basal layer of these specimens.Statistical analysis was carried out with the software SPSS 18.0 by one-way analysis of variance (ANOVA),least significant difference (LSD) test and Pearson correlation analysis.Results In patients with psoriasis,the mean number of CD4+ T cells per high-power (× 200) field was significantly larger in lesional skin than in nonlesional skin (epidermis:5.29 ± 4.66 vs.0,P< 0.05;dermis:77.50 ± 43.66 vs.9.67 ± 7.73,P< 0.05),so was the mean number of CD8+ T cells per high-power (× 200) field (epidermis:7.83 ± 6.27 vs.0.71 ± 1.20,P< 0.05;dermis:46.08 ± 34.26 vs.5.54 ± 4.43,P < 0.05).A significant increase was also observed in the number of CD4+ and CD8+ T cells in lesional skin of patients with psoriasis compared with the normal control skin (both P < 0.05).The lesional skin of patients with psoriasis also showed significandy increased number of melanocytes (103.45 ± 16.96),but decreased proportion of pigment granule-containing cells (7.45% ± 3.86%) in the basal layer compared with nonlesional skin (43.62 ± 14.20,P< 0.05;43.10% ± 14.91%,P< 0.05) and normal control skin (43.33 ± 14.02,P< 0.05;54.17% ± 29.40%,P < 0.05).There were no significant differences in either the mean number of CD4+ T cells,CD8+ T cells and melanocytes or the proportion of pigment granule-containing cells between nonlesional psoriatic skin and normal control skin (all P > 0.05).The mean number of melanocytes was significantly higher in regressive psoriatic lesions than in white patches arising in subsided psoriatic lesions (P < 0.05) and normal control skin (P < 0.05),but similar between white patches and normal control skin (P > 0.05),while the proportion of pigment granule-containing cells was insignificantly lower in regressive psoriatic lesions than in white patches (P > 0.05),and significantly lower in regressive psoriatic lesions and white patches than in normal control skin (both P < 0.05).Neither the number of CD4+ T cells nor that of CD8 + T cells was correlated with the number of melanocytes or the proportion of pigment granule-containing cells in progressive psoriatic lesions (both P > 0.05),while the number of both CD4 + T cells and CD8 + T cells was positively correlated with that of melanocytes (r =0.46 and 0.56,respectively,both P < 0.05),but uncorrelated with the proportion of pigment granule-containing cells in nonlesional psoriatic skin (both P > 0.05).Conclusions In progressive psoriatic lesions,there is a significant increase in the number of CD4+ and CD8 + T cells as well as melanocytes in the basal layer,but a significant decrease in the proportion of pigment granule-containing cells.After subsidence of psoriatic lesions,both the number of melanocytes and proportion of pigment granule-containing cells gradually reach the levels in normal skin of healthy individuals.
8.Rapid PCR authentication Lonicera japanica.
Chao JIANG ; Jing-Yi HOU ; Lu-Qi HUANG ; Yuan YUAN ; Min CHEN ; Yan JIN
China Journal of Chinese Materia Medica 2014;39(19):3668-3672
To simply and rapid authenticate Lonicera japanica. Rapid allele-specific PCR primer was designed base on trnL-trnF 625 G/T Single nucleotide polymorphism and the PCR reaction systems including annealing temperature was optimized; optimized results were performed to authenticate L. japanica and its 9 adulterants. When 100 x SYBR Green I was added in the PCR product of 87 degrees C initial denatured 1 min; 87 degrees C denatured 5 s, 68 degrees C annealing 5 s, 30 cycle; L. japanica visualize strong green fluorescence under 365 nm UV lamp whereas adulterants without. The results indicate rapid allele-specific PCR could authenticate L. japanica and its adulterants rapidly and simply.
Alleles
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DNA Primers
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genetics
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Drug Contamination
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prevention & control
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Lonicera
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classification
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genetics
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Polymerase Chain Reaction
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methods
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Quality Control
9.Progress in encephalopathy of prematurity.
Zhi-Heng HUANG ; Yi SUN ; Chao CHEN
Chinese Journal of Contemporary Pediatrics 2011;13(10):771-775
The preterm birth has been increasing for the last decade. With the development of neonatal intensive care techniques, the survival rate of preterm infants is increased markedly. However, the brain of preterm infants is so vulnerable to injury that preterm brain injury has become an enormous public health problem. Hypoxia-ischemia and infection/inflammation are two main perinatal risk factors causing premyelinating oligodendrocyte and cortical neuron injury. Encephalopathy of prematurity is characterized by diffuse white matter injury and neuronal/axonal disruption, leading to neurological disabilities such as cognitive impairment and cerebral palsy. The advancement in imaging techniques, especially magnetic resonance imaging, provides more information for preterm brain injury and brain development, which contributes to the diagnosis and follow-up of the preterm infants. This article reviews the progress in encephalopathy of prematurity in order to open a new window to prophylaxis and management of this disease.
Brain Diseases
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diagnosis
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pathology
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therapy
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Humans
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Infant, Newborn
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Infant, Premature
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Infant, Premature, Diseases
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diagnosis
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pathology
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therapy
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Leukomalacia, Periventricular
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diagnosis
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Magnetic Resonance Imaging
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Neurons
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pathology
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Tomography, X-Ray Computed
10.Montreal cognitive assessment for cognitive detection in brain trauma patients with normal mini-mental state examination scores
Yi ZHANG ; Qiujin YAO ; Chao CHEN ; Yehuan WU ; Yu ZHANG ; Ya WANG ; Yilin YANG
Chinese Journal of Trauma 2015;31(7):604-607
Objective To evaluate the Montreal cognitive assessment (MoCA) for detecting the mild cognitive impairment (MCI) in brain trauma patients with normal mini-mental state examination (MMSE) scores.Methods Fifty brain trauma patients with normal MMSE scores hospitalized from January 2013 to June 2014 were subjected to the MoCA test.The patients were classified as cognitive impairment group scored less than 26 on the MoCA and cognitive normal group scored 26 or above on the MoCA.Differences in MMSE and MoCA scores of the two groups were compared.Receiver operative characteristic (ROC) curve was used to determine the optimal cut-off scores in screening for MCI.Results Overall MMSE and MoCA scores were (27.84 ± 0.89) points and (23.24 ± 2.90) points.There was a positive correlation between MoCA and MMSE total scores (r =0.355 2,P < 0.05).MCI was found in 79% of the brain trauma patients using the MoCA.MMSE total score and subscores were all similar between the two groups.MoCA total score and subscores of attention,language,abstraction and delayed recall were much higher in cognitive normal group than in cognitive impairment group (P <0.05),but there were no significant differences in visuospatial,naming and oritention domains.Area under the ROC curve for MoCA(0.871 ± 0.038) was larger compared with MMSE (0.796 ± 0.054) (Z =3.592,P < 0.05).The optimal cut-off scores of MoCA and MMSE for the identification of MCI were 25.5 and 28.5 respectively.Conclusions MoCA and MMSE total scores are positively correlated.MoCA is a better detector for the identification of MCI in brain trauma patients than the MMSE.