Laws of Syndrome and Prescription in Yin Deficiency Syndrome of Systemic Lupus Erythematosus Based on Complex Network Analysis / 中国实验方剂学杂志

Objective: To explore the laws of core symptom and traditional Chinese medicine(TCM) prescription in treatment of the Yin deficiency syndrome of systemic lupus erythematosus (SLE), in order to provide the objective basis for the treatment of SLE with TCM based on complex network. Method: Complex network analysis method was used to retrospectively study 322 TCM prescriptions collected from the First Affiliated Hospital of Guangzhou University of Chinese Medicine between January 2011 and May 2017 and 134 literatures about treatment of SLE with TCM through computer retrieval. The topological property parameters of the complex network were calculated, and used to analyze the structure of the core network and the compatibility rule of symptom and TCM. Then the core syndrome, herbs, compatibility rules and characteristics of commonly used prescriptions for SLE were analyzed. Result: The results of analysis of complex network showed that the core TCM herbs for Yin deficiency syndrome of SLE mainly included Rehmanniae Radix, Moutan Cortex, Paeoniae Radix Rubra, Anemarrhenae Rhizoma, Scutellariae Radix, Artemisiae Annuae Herba, Cornt Fructus, Gentianae Macrophyllae Radix, Trionycis Carapax, Ligustri Lucidi Fructus, Paeoniae Radix Alba, Poria, Alismatis Rhizoma, Coicis Semen, Dioscoreae Rhizoma, Glycyrrhizae Radix et Rhizoma, Pinelliae Rhizoma.Core prescriptions included Qinghao Biejia Tang and Liuwei Dihuang Wan. Core syndromes included fatigue, poor sleep, anorexia, low fever, five upset heat, night sweats, dizziness, rash, skin erythema, facial red butterfly erythema, dark red rash, alopecia, weak waist and knees, joint pain, muscle pain, tinnitus, thirst, sore throat, red tongue, tongue with less fur, and thready and rapid pulse. Compared with the diagnostic criteria of the syndrome, the core symptoms included some new common clinical symptoms, such as poor sleep, anorexia, facial red butterfly erythema, dark red rash. Conclusion: The main pathogenesis of SLE is Yin deficiency and blood heat, so the treatment should be nourishing Yin and generating body fluid, removing pathogenic heat from blood and clearing deficient heat. In this study, the results of clinical retrospective review and computer retrieval by the complex network analysis method were basically consistent with the clinical application. It can be used as a reference for the clinical syndrome differentiation and treatment of Yin deficiency syndrome of SLE.

Diagnostic Accuracy of Chinese Medicine Diagnosis Scale of Phlegm and Blood Stasis Syndrome in Coronary Heart Disease: A Study Protocol / 中国结合医学杂志

BACKGROUND@#Phlegm and blood stasis syndrome (PBSS) is one of the main syndromes in coronary heart disease (CHD). Syndromes of Chinese medicine (CM) are lack of quantitative and easy-implementation diagnosis standards. To quantify and standardize the diagnosis of PBSS, scales are usually applied.@*OBJECTIVE@#To evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD.@*METHODS@#Six hundred patients with stable angina pectoris of CHD, 300 in case group and 300 in control group, will be recruited from 5 hospitals across China. Diagnosis from 2 experts will be considered as the "gold standard". The study design consists of 2 phases: pilot test is used to evaluate the reliability and validity, and diagnostic test is used to assess the diagnostic accuracy of the scale, including sensitivity, specificity, likelihood ratio and area under the receiver operator characteristic (ROC) curve.@*DISCUSSION@#This study will evaluate the diagnostic accuracy of CM diagnosis scale of PBSS in CHD. The consensus of 2 experts may not be ideal as a "gold standard", and itself still requires further study. (No. ChiCTR-OOC-15006599).

Intervention and mechanism of exercises on primary osteoporosis / 中国组织工程研究

BACKGROUND: With the acceleration of aging population in the world, the prevalence of primary osteoporosis is increasing. Complications induced by primary osteoporosis will be a key public health problem, so its prevention and treatment is an issue of concern in the medical field. OBJECTIVE: To clarify the benign intervention mechanism of exercises on primary osteoporosis, and to analyze the mechanism of exercise effects on primary osteoporosis by literature and logical thinking methods, so as to find out the benign intervention mechanism, thereby providing theoretical reference for the patients and surgeons.METHODS: A computer-based online search was conducted in Elsevier Science-direct, Medline, EM, CNKI, and CJFD databases using the key words of "sports, osteoporosis, nutrition, hormone, depression" in English and Chinese, respectively. The search years ranged from 1990 to 2015. Totally 756 relevant articles were screened, and 52 eligible articles were finally included for analysis and discussion. RESULTS AND CONCLUSION: Primary osteoporosis is affected by hormone, nutrition, exercise, lifestyle and psychological factors. Exercises can mediate the secretion of hormones to regulate bone mass, which is a kind of direct physical stimulation to bone metabolism, further affecting the absorption of nutrients to maintain bone mass. Exercise makes active effect on lifestyle and psychology, thus affecting bone health. Therefore, the scientific and reasonable exercise has a benign intervention action on primary osteoporosis, and can be used to prevent primary osteoporosis.

Methological quality of systematic reviews and meta-analyses on acupuncture for stroke: A review of review / 中国结合医学杂志

<p><b>OBJECTIVE</b>To assess the methodological quality of systematic reviews and meta-analyses regarding acupuncture intervention for stroke and the primary studies within them.</p><p><b>METHODS</b>Two researchers searched PubMed, Cumulative index to Nursing and Allied Health Literature, Embase, ISI Web of Knowledge, Cochrane, Allied and Complementary Medicine, Ovid Medline, Chinese Biomedical Literature Database, China National Knowledge Infrastructure, Wanfang and Traditional Chinese Medical Database to identify systematic reviews and meta-analyses about acupuncture for stroke published from the inception to December 2016. Review characteristics and the criteria for assessing the primary studies within reviews were extracted. The methodological quality of the reviews was assessed using adapted Oxman and Guyatt Scale. The methodological quality of primary studies was also assessed.</p><p><b>RESULTS</b>Thirty-two eligible reviews were identified, 15 in English and 17 in Chinese. The English reviews were scored higher than the Chinese reviews (P=0.025), especially in criteria for avoiding bias and the scope of search. All reviews used the quality criteria to evaluate the methodological quality of primary studies, but some criteria were not comprehensive. The primary studies, in particular the Chinese reviews, had problems with randomization, allocation concealment, blinding, dropouts and withdrawals, intent-to-treat analysis and adverse events.</p><p><b>CONCLUSIONS</b>Important methodological flaws were found in Chinese systematic reviews and primary studies. It was necessary to improve the methodological quality and reporting quality of both the systematic reviews published in China and primary studies on acupuncture for stroke.</p>

Controversies on the values for health instruments of Chinese medicine / 中国结合医学杂志

Currently, there are increasing debates on the necessity of health instruments in Chinese medicine (CM) emerging in China. This study aims to reevaluate its status and values. Analyzing the causes, limits, advantages, and properties characters of health instruments in CM, it is found that weak fundamental research, incomplete self-awareness, and complicated social factors are the primary causes of debates. A comprehensive analysis showed health instruments in CM have health evaluation benefits to people from a dominant Chinese culture, meet the requirements of cultural background, and bring long-term value to Chinese instrument researches. However, its values and status should be treated differently depending on various subtypes. Although little theoretical and practical evidences proved that patients-reported health instruments in CM should be proposed independently, the doctors- and nurses-reported questionnaires are necessary. With this in mind, the study group proposes the 'Chinese cultural instruments (CCIs)' and 'health-related CCIs'. The latter one aims to evaluate the health status of people in a dominant Chinese culture. The CCIs theory represents Chinese instrument researches on a larger regional and higher level, and resolves the debates on instruments between CM and Western medicine in China. Health instruments in CM bring more scientific and social benefits for Chinese instrument researches. However, it does not include cultural demands, and lacks scientific significance. CCIs have all its virtues, and add solutions to the latter's theory bottleneck and scientific debates, thus bringing increased benefits to clinical assessment in complementary and alternative medicine researches.

Development and Evaluation of GS-SF for Gastric Stuffiness (Wei PI) Patients Based on Item Response Theory, Computerized Adaptive Testing, and Data Simiuation / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To develop and evaluate the short version of patient reported outcomes (PROs) questionnaire for gastric stuffiness (Wei Pi) patients with modern test theory and technologies, hoping to provide testing tools for related clinical practice and scientific researches with higher quality and less administrative and response burdens.</p><p><b>METHODS</b>Using descriptive study design, clinical data were collected with sociological questionnaire and previous developed full items version of PROs instrument for gastric stuffiness (Wei Pi) patients via field and online surveys between Sep 2011 and Mar 2012. The statistical analysis group identified the termination parameters firstly, and then selected items with discrimination, fitting residual, item information curve (IIC) , item characteristic curve (ICC), and the rank of computerized adaptive testing (CAT) select proportion, etc. After assumption evaluation of item response theory (IRT), IIC, ICC, difficulty coefficient distribution, items-response relation and thresholds, etc. were used for psychometric evaluation of instrument.</p><p><b>RESULTS</b>A total of 331 patients [Ages: 31.99 +/- 10.29 yrs; Male: 186 (56.3%)] were enrolled in statistical analysis. The test termination criterion was Max SE = 0.2 or Max items number =16. After items selection, a 15-item short version of instrument, which contains symptoms facet (8 items) and impact facet (7 items) was generated. With good unidimensionality, local independence, and monotonicity, the IC and ICC in IRT analysis showed good working capability of the questionnaire. The difficulty coefficient distribution and items-response relation were also rational, as well as response thresholds.</p><p><b>CONCLUSIONS</b>The short version of PROs instrument for adult gastric stuffiness (Wei Pi) patients was successfully developed and assessed. The instrument with good methodological and reporting quality could be used in clinical and scientific evaluating their symptoms and impact.</p>

Prenatal diagnosis of sirenomelia by two-dimensional and three-dimensional skeletal imaging ultrasound / 华中科技大学学报（医学）（英德文版）

This study sought to evaluate the contribution of two-dimensional ultrasound (2D-US) and three-dimensional skeletal imaging ultrasound (3D-SUIS) in the prenatal diagnosis of sirenomelia. Between September 2010 and April 2014, a prospective study was conducted in a single referral center using 3D-SUIS performed after 2D-US in 10 cases of sirenomelia. Diagnostic accuracy and detailed findings were compared with postnatal three-dimensional helical computed tomography (3D-HCT), radiological findings and autopsy. Pregnancy was terminated in all 10 sirenomelia cases, including 9 singletons and 1 conjoined twin pregnancy, for a total of 5 males and 5 females. These cases of sirenomelia were determined by autopsy and/or chromosomal examination. Initial 2D-US showed that there were 10 cases of oligohydramnios, bilateral renal agenesis, bladder agenesis, single umbilical artery, fusion of the lower limbs and spinal abnormalities; 8 cases of dipus or monopus; 2 cases of apus; and 8 cases of cardiac abnormalities. Subsequent 3D-SUIS showed that there were 9 cases of scoliosis, 10 cases of sacrococcygeal vertebra dysplasia, 3 cases of hemivertebra, 1 case of vertebral fusion, 3 cases of spina bifida, and 5 cases of rib abnormalities. 3D-SUIS identified significantly more skeletal abnormalities than did 2D-US, and its accuracy was 79.5% (70/88) compared with 3D-HCT and radiography. 3D-SUIS seems to be a useful complementary method to 2D-US and may improve the accuracy of identifying prenatal skeletal abnormalities related to sirenomelia.

General integral medicine: the strategic direction for complex health interventions / 中国中西医结合杂志

Nowadays, the simple combination of Western medicine (WM) and complementary and alternative medicine (CAM) cannot resolve all the health problems and various requirements. This article proposed the general integral medicine (GIM) theoretical model, which declares the disease causes analysis, clinical intervention and outcomes assessment should be recognized, managed and evaluated both from physiological, psychological, and spiritual status, and all the four dimensions: orthodox medicine (WM, Chinese medicine, etc.), individual inherent characteristics (emotion, attitude, psychology, etc.), cultural influences (doctors, caregivers, groups care, etc.), and natural environment and social systems (economic status, social security system, environmental pollution, etc). As for health outcomes assessment, a more comprehensive system including biological, doctors, patients, health intimate, social and environmental evaluations were required. The GIM model has individualized, dynamic, standardized, objective, systematic inherent characteristics, and opening and compatible external characteristics. It aims to provide the new theoretical guidance and strategic development direction for complex health interventions, and solve various medical related psychological and social problems.

Ultrasound imaging of acardia twin before and after blood spontaneously blocked and pump twin′s outcome analysis in twin reversed arterial perfusion sequence / 中华医学超声杂志（电子版）

Objective To discuss the ultrasound imaging of acardia twin before and after spontaneously blood blocked in twin reversed arterial perfusion sequence (TRAP), and to analyze the inlfuence factor for the prognosis of pump twin. Methods Seven TRAP with pump twins and acardia′s blood lfow blocked were diagnosed by US and autopsy in Hubei Women and Children′s Hospital between 2001 January to 2012 September. The ultrasound images, clinical data and pump twin’ outcome were analyzed. Results Ultrasound images showed skin edema, acardia, spine and lower limbs in seven acardia cases before blood blocked, among which 4 were acardius acephalus, 3 were acardius anceps. Single umbilical artery were detected in 7 cases with reversed umbilical artery perfusion toward fetus. Four cases had rare blood lfow (UA-PI ratio<0.7. Five acardia cases had slower growing rate than the pump twin. Ultrasound images showed no growing, no blood lfow in the acardia, the acardia twin became vagued in the second and third trimester, and ifnally developed into a paper fetus. A linear umbilical cord extend from umbilical region to placenta were found in 7 cases whose blood lfow were spontaneously blocked. Pump twin′s outcome:3 pump twins survived, 3 died in uterus, and 1 was induced labor due to hydrocephalus and cardiac failure. The most important factors that affected the prognosis of pump twin included:faster growing in acardia twin with less blood supply, abnormal brain and heart function in pump twin, chromosome abnormalities, abnormal amniotic fluid and cord entanglement. Conclusions Less blood flow and slow growth speed prompt in acardia twin suggested spontaneously acardia blood block. It is mandatory to monitor the pump twin after the spontaneous block of acardiac’s blood lfow.

Retrospective analysis for 104 cases of early-stage Hodgkin's Lymphoma treated with different modality therapies / 中国实验血液学杂志

This paper explored the curative effect of combined modality therapy and extended field radiotherapy for early-stage Hodgkin's Lymphoma. 104 cases of early-stage Hodgkin's Lymphoma from Jan 1987 to Dec 2010 in PLA Hospital 307 were retrospectively analyzed, including 76 cases in combined modality therapy group and 28 cases in extended field radiotherapy group, and the long-term efficacy and toxicity of two therapy modalities were evaluated. The results showed that the median survival time of 104 cases was 85.42 months, the complete remission rates of combined modality therapy and extended field radiotherapy groups were 72.4 and 71.4 respectively (P = 0.924); the overall response rates of combined modality therapy and extended field radiotherapy groups were 97.4 and 96.4 respectively (P = 0.779); the 5-year overall survival (OS) rates in the 2 groups were 89.5 and 89.1 respectively, and the 8-year OS rates of the 2 groups were 81.3 and 70.6. No statistical difference was found in above-mentioned 2 groups. Moreover, the 5-year progression free survival (PFS) rates of these 2 groups were 84.2 and 69.0 (P = 0.04), and 8-year PFS rates of these 2 groups were 80.0 and 55.5 (P = 0.04) respectively, the 5-year relapse rates of these 2 groups were 28.1 and 45.6 (P = 0.023) respectively. It is concluded that the combined modality therapy can raise the PFS rate and reduce the relapse rate as compared with extended field radiotherapy for early-stage Hodgkin's Lymphoma, but there is no difference in the overall survival rate between the 2 groups.

Evaluation of a scale of patient-reported outcomes for the assessment of myasthenia gravis patients in China / 中国结合医学杂志

<p><b>OBJECTIVE</b>To evaluate a scale of patient-reported outcomes for the assessment of myasthenia gravis patients (MG-PRO) in China.</p><p><b>METHODS</b>A total of 100 MG patients were interviewed for the field testing. Another 56 MG patients were selected and assessed with the MG-PRO scale before treatment and at 1, 2 and 4 weeks after treatment. The classical test theory and item response theory (IRT) were used to assess the psychometric characteristics of the MG-PRO scale.</p><p><b>RESULTS</b>The MG-PRO scale included 4 dimensions: physical, psychological, social environment, and treatment. Confirmatory factor analysis showed that each dimension was consistent with the theoretical construct. The scores of the physical and psychological dimensions increased significantly at 1 week after treatment (P<0.05). All the dimension scores and the MG-PRO score increased significantly at 2 and 4 weeks after treatment (P<0.05). IRT showed that person separation indices were greater than 0.8, most of the item fit residual statistics were within ± 2.5, and no item had uniform or non-uniform differential item functioning (DIF) between gender and age (<40, [Symbol: see text]40).</p><p><b>CONCLUSIONS</b>The MG-PRO scale is valid for measuring the quality of life (QOL) of MG patients, with good reliability, validity, responsiveness, and good psychometric characteristics from IRT. It can be applied to evaluate the QOL of MG patients and to assess treatment effects in clinical trials.</p>

Culture and identification of neural stem cells from mouse embryos / 中国当代儿科杂志

<p><b>OBJECTIVE</b>The purpose of this study was to culture and identify neural stem cells from mouse embryos in vitro using a modified method and provide a basis for further study of the biology of neural stem cells under hypoxia.</p><p><b>METHODS</b>The cells were isolated mechanically from the front cortex of fetal Institute of Cancer Research (ICR) mice on embryonic day 14. They were passaged by mechanical dissociation and enzymatic digestion. The neurospheres were identified by immunofluorescent staining of nestin. Cell differentiation was induced by 1% fetal bovine serum and then the cells were identified by immunohistochemistry of β-tubulin III and GFAP.</p><p><b>RESULTS</b>The cells obtained from the front cortex of fetal ICR mice had the capacity of forming neurospheres which showed nestin immunoreactive positivity. After being induced by 1% fetal bovine serum, the cells were differentiated into β-tubulin III-positive cells and GFAP-positive cells.</p><p><b>CONCLUSIONS</b>Using mechanical dissociation of primary cells and mechanical dissociation with enzymatic digestion of primary cells, the NSCs from the front cortex of mouse embryos can be obtained.</p>

Effect of glutamate on vascular endothelial growth factor mRNA and protein expressions in hypoxic rat astrocytes in vitro / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the effect of glutamate on the expression of vascular endothelial growth factor (VEGF) mRNA and protein in cultured rat astrocytes under hypoxia.</p><p><b>METHODS</b>Cultured rat astrocytes were randomly divided control group, glutamate group, hypoxia group and hypoxia+glutamate group. The cells in the control and glutamate groups were cultured under nomoxic condition (95% air and 5% CO(2)), and those in the other two groups under hypoxic condition (94% N(2), 5% CO(2) and 1% O(2)). The total RNA was extracted from the cells at different time points of hypoxic exposure for real-time FQ-PCR and ELISA to detect the expression of VEGF mRNA and protein in cultured astrocytes, respectively.</p><p><b>RESULTS</b>The expressions of VEGF mRNA and protein underwent no significant changes in the control glutamate groups, but increased obviously in both hypoxia and hypoxia+glutamate groups at 2, 4, 6, 8 and 12 h of hypoxic exposure. At these time points, VEGF expressions at both the mRNA and protein levels were significantly higher in hypoxia+glutamate group than in hypoxia group.</p><p><b>CONCLUSION</b>Glutamate at 1 micromol/L can further increase the expression of VEGF mRNA and protein in astrocytes exposed to hypoxia, which may result from the adaptive changes of glutamate receptors in hypoxic astrocytes.</p>

Combination of prenatal sonography and MRI in diagnosis of fetal urology reproductive system abnormalities / 中华医学超声杂志（电子版）

Objective To compare the diagnostic value of prenatal ultrasound with magnetic resonance imaging(MRI)in the abnormalities of fetal urinary reproductive system,and explore the value of combining prenatal ultrasound and MRI in diagnosis of fetal urinary and reproductive system abnormalities.MethodsTwenty-seven fetal abnormalities in urinary reproductive system detected by prenatal ultrasound received MRI examination within 24 hours after ultrasound,confirmed by autopsy or clinical follow-up.The results of prenatal ultrasound and MRI were analyzed retrospectively.Results Ultrasound,MRI,autopsy or after birth,postpartum follow-up confirmed 27 cases of Genitourinary system anomalies,including 2 cases of hydronephrosis,renal agenesis in 6 cases,14 cases of renal cystic disease,renal fusion in 3 cases,1 case of renal tumors,ovarian cyst in one case of crown .Fetal ultrasound can diagnose the majority of the genitourinary system anomalies (25/27),MRI can diagnose fetal anomalies of 26 cases of genitourinary system.Conclusion Ultrasound could diagnose the majority of fetal abnormalities in urology reproductive system accurately.However,combining ultrasound and MRI could establish more precise estimation in urology reproductive system,such as the level of obstruction of urinary system in hydronephrosis,the pulmonary hypoplasia secondary to urology system abnormalities,and location of cyst in the renal parenchyma or in the renal capsule.

Neurons in the corpus callosum of rats: expression of Cav2.2 and their connection / 中南大学学报(医学版)

OBJECTIVE@#To prove the existence neurons in the rat corpus callosum, the potential function of these neurons and their connection.@*METHODS@#Immunohistochemistry was used performed to examine the expressions of NeuN, a mature neuron marker,and N-type voltage-dependent valcium channel alpha1-subunit (Cav2.2)in the section of the rat corpus callosum. Horseradish peroxidase (HRP) normal sodium solution (30%), the retrograde tracer,was injected under the frontal forceps of corpus callousm and HRP absorbed by the process of neurons in the brain slices was stained with tetramethyl benzidine.@*RESULTS@#There were some NeuN positive cells in the rat corpus callosum and Cav2.2 was detected in some of these NeuN positive cells.Neurons with positive HRP were found in the rat corpus callosum and some of these neurons connected to the cortex or corpus striatum.@*CONCLUSION@#There are a few neurons in the corpus callosum of adult rats and some of them express Cav2.2. Neurons in the corpus callosum have connections with the brain cortex or corpora striatum.

A simple method for assessment of RNA integrity in laser capture microdissection samples / 南方医科大学学报

<p><b>OBJECTIVE</b>To develop a simple method for assessment of RNA integrity in laser capture microdissection (LCM) samples.</p><p><b>METHODS</b>The total RNA were isolated from the LCM samples and the sections before and after microdissection and examined by agarose gel electrophoresis. Real-time PCR was employed to assess the RNA from LCM samples, and the quantity of RNA was theoretically estimated according to the average total RNA product in mammalian cells (10 ng/1000 cells).</p><p><b>RESULTS</b>When the total RNA from the sections before and after microdissection was intact, the RNA from LCM samples also had good quality, and the 28S and 18S rRNAs were visualized by ethidium bromide staining. Real-time PCR also showed good RNA quality in the LCM samples.</p><p><b>CONCLUSION</b>A simple method for quantitative and qualitative assessment of the RNA from LCM samples is established, which can also be applied to assessment of DNA or proteins in LCM samples.</p>

Proliferation of neural progenitor cells in the subventricular zone and around the hematoma after intracerebral hemorrhage in adult rat / 南方医科大学学报

<p><b>OBJECTIVE</b>To examine the proliferation of the neural progenitor cells in the subventricular zone (SVZ) and around the hematoma after intracerebral hemorrhage (ICH) in adult rats.</p><p><b>METHODS</b>ICH was induced by stereotactic injection of type VII collagenase into the corpus striatum of adult rats, followed by pulse or continuous intrapenitoneal injection of bromodeoxyuridine (Brdu) to label the proliferating cells. The rats were sacrificed on days 2, 7, 14 and 28 following the ICH for immunohistochemistry of the tissues in the SVZ and around the hemotoma to determine the number of Brdu- immunoreactive cells.</p><p><b>RESULTS</b>With pulse Brdu labeling, a significant increase in the number of Brdu-immunoreactive cells in the ipsilateral and contralateral tissues in the SVZ and around the hematoma was observed 2-14 days, and the cell number reached the maximum on day 7 after ICH as compared with that of the sham-operated group. With continuous Brdu injection, the increase was observed on day 14 after ICH, and till day 28, the Brdu-immunoreactive cells in the SVZ decreased to the control level, but some positive cells still persisted in the tissues around the hematoma.</p><p><b>CONCLUSION</b>ICH induces transient and regional increase in the cell proliferation in the ipilateral and contraletral SVZ and tissues around the hematoma, and the proliferating cells in the SVZ may migrate towards the hematoma area.</p>

Effect of ligustrazine on nNOS expression and neuranagenesis in adult rats after cerebral ischemia-reperfusion injury / 南方医科大学学报

<p><b>OBJECTIVE</b>To observe the effect of ligustrazine on cell proliferation in the subventricular zone (SVZ) and dentate gyrus (DG) and nNOS expression in rat brain after cerebral ischemia-reperfusion injury.</p><p><b>METHODS</b>Male SD rats were randomly divided into normal control group, sham operation group, model group and ligustrazine treatment group. The latter two groups were further divided into 5 subgroups for observation at 1, 3, 7, 14 and 21 days after reperfusion following a 2-hour middle cerebral artery occlusion (MCAO). The cells in S phase were labeled with BrdU, and immunohistochemistry was employed to detect BrdU- and nNOS-positive cells. The numbers of BrdU-positive cells in the SVZ and DG were measured. The expression of nNOS was detected by Western blotting.</p><p><b>RESULTS</b>nNOS expression increased significantly in the model group as compared to the sham operation group (P<0.05), and ligustrazine treatment significantly lowered the expression level in comparison with the model group (P<0.05). Compared with the model group, a significant increase in BrdU-positive cells occurred in the SVZ of rats 1 and 3 days after igustrazine treatment (P<0.05), along with an increase of DG BrdU-positive cells.</p><p><b>CONCLUSION</b>Ligustrazine significantly restrains ischemia-reperfusion injury-induced nNOS activity enhancement and promotes cell proliferation in the SVZ and DG of adult rats after ischemia-reperfusion injury.</p>

Construction and identification of a plasmid with EGFP reporter gene for enhancer function analysis / 南方医科大学学报

<p><b>OBJECTIVE</b>To construct a plasmid vector with EGFP reporter gene for functional analysis of enhancers.</p><p><b>METHODS</b>EGFP DNA was amplified by PCR from plasmid pEGFP-N1 DNA and subcloned into plasmid PGL3-promoter backbone without luc(+) gene to construct the enhancer-identifying vector pEGFP-enhancer. Different copies of hypoxia response element (HRE) sequence were synthetized and subcloned into the multiple cloning site of the plasmid pEGFP-enhancer. Using Lipofectamine 2000, the recombined pEGFP-HRE and pEGFP-5HRE plasmids were transfected into the Hela cells respectively. After hypoxic or normoxic cell culture, EGFP expression in the cells was detected by flow cytometry and fluorescence microscopy.</p><p><b>RESULTS</b>After hypoxic exposure, the fluorescence intensity of EGFP in the Hela cells transfected with the plasmid increased with the enhancer HRE copies, while the fluorescence intensity underwent no significant changes after normoxic cell culture.</p><p><b>CONCLUSION</b>we have successfully constructed the enhancer expression vector plasmid pEGFP-enhancer, which can identify the activity of the enhancers through EGFP expression.</p>

Effect of ligustrazine on cell proliferation in subventricular zone in rat brain with focal cerebral ischemia-reperfusion injury / 中南大学学报(医学版)

OBJECTIVE@#To observe the effect of ligustrazine on cell proliferation in subventricular zone (SVZ) in rat brain with focal cerebral ischemia reperfusion injury.@*METHODS@#Male SD rats were randomly divided into a normal group,a sham operation group,a ligustrazine treatment group, and a control group. The ligustrazine treatment group and the control group were further divided into 5 subgroups: 1d, 3d, 7d, 14d, and 21d reperfusion after 2h middle cerebral artery occlusion (MCAO). The focal cerebral ischemia-reperfusion model was made by MCAO. S phase cells were labelled with BrdU. Immunohistochemistry method was conducted to detect the BrdU positive cells. The total number of BrdU positive cells in the SVZ was measured. The expression of neuro nitric oxide synthase (nNOS) was detected with Western blot method.@*RESULTS@#There was a significant increase of BrdU positive cells in SVZ of ligustrazine treatment in the 1d and 3d group compared with that of the control group (P<0.01). The total number of BrdU positive cells reached a peak in 7d group and declined afterwards. Cells proliferated also in SVZ on the contralateral side, and peaked at 7d. The nNOS expression of ligustrazine administration after the focal cerebral ischemia-reperfusion decreased at 1d and 3d after the reperfusion compared with that of the control group (P<0.05), and increased at 7d, but with no significant difference compared with that of the control group.@*CONCLUSION@#Ligustrazine may promote the cell proliferation in SVZ of adult rats with ischemia-reperfusion injury by decreasing the nNOS expression.