1.Clinical application of autoimmune neurological diseases related antibodies
Chinese Journal of Laboratory Medicine 2014;37(8):573-576
Autoimmune neurological diseases have a high morbidity and mortality,but are treatable if diagnosed earlier.Many auto-antibodies may become important laboratory biomarkers for the diagnosis,evaluating severity,prognosis,and even reflecting treatment response,of these diseases.With the development of new knowledge and diagnostic technology,there is a pending need for discovering new pathogenesis-based biomarkers with high sensitivity and specificity on autoimmune diseases of the nervous system.To fulfill this goal,the pathogenesis as well as translational studies in autoimmune diseases of the nervous system are highly warranted.Multi-center randomized double-blinded clinical trials are also necessary to appropriately evaluate the clinical value of these auto-antibodies.W henever possible,these validated autoantibody assays are readily encouraged to perform and popularize these methods in clinical practice.
2.Clinical observation of treatment in ovary endometriosis with mifepristone after laparoscopic surgery
Chinese Journal of Postgraduates of Medicine 2010;33(3):16-18
Objective To investigate the role of mifepristone in endometriosis after laparoscopic surgery. Methods One hundred and forty-three women diagnosed with endometriosis after laparoscopic surgery were divided into two groups: one group with 78 cases were given mifepristone at 10 mg once daily (mifepristone group),and the other group with 65 cases were given gestrinone at 2.5 mg,twice every week (gestrinone group). All patients were followed-up 1 to 2 years and observed curative effect, compared the therapy effect on endometriosis as well as the side effects of two drugs. Results The clinical symptom and sign were improved at 3, 6, 12 months in two groups (P< 0.01). The rate of efficiency was 85.9%(67/78) in mifepristone group,and 84.6%(55/65) in gestrinone group, there was no significant difference between two groups (P > 0.05). The rates of acne, weight gain, joint ache, aminotransferase increase was lower in mifepristone group than those in gestrinone group (P <0.01 or <0.05). The recovery time of ovulation or menstruation was shorter in mifepristone group [(12.0 ± 2.9), (26.8 ± 3.9) d]than those in gestrinone group [(25.3 ±3.7), (35.0±4.1) d](P<0.05). Conclusions Mifepristone seems to be an effective,safe,and convenient treatment for endometriosis with low-cost and few side effects. Therefore,it can be used as first choice for treatment of endometriosis after laparoscopic surgery.
3.Clinical analysis in patients with anti-N-methyl-D-aspartate receptor encephalitis
Chinese Journal of Neurology 2012;45(5):307-311
Objective To investigate the clinical features of anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis and the significance of anti-NMDAR antibody assay in clinical diagnosis.Methods Sixty-two patients were divided into 3 groups of encephalitis,encephalopathy and other central nervous system diseases based on their affliction. Anti-NMDAR antibody was detected by transfected cell-based indirect immunofluorescence assay in the serum and cerebrospinal fluid. The clinical features,laboratory tests,treatment and prognosis of NMDAR encephalitis were analyzed.ResultsAnti-NMDAR antibody was positive in serum and (or) cerebrospinal fluid of 9 patients (9/32,28% ) from encephalitis group.The positive rate of anti-NMDAR antibody in cerebrospinal fluid was higher than that in serum of these patients.Among them,5 patients with higher antibody titer had impaired blood-brain barrier.No tumor was detected in these 9 patients.The most predominant symptoms of anti-NMDAR encephalitis include fever,psychiatric disturbances,seizures,dystonia and autonomic dysfunction.Brain MRI and electroencephalography were also abnormal. Patients were responsive to early immunotherapy. Conclusion Detection of the anti-NMDAR antibody may be important for early diagnosis and treatment of autoimmune encephalitis.
4.Detection of the retina degeneration in the early stage of Alzheimer's disease by spectral domain optical coherence tomography
Xiangjun DAI ; Changzheng CHEN
The Journal of Practical Medicine 2017;33(8):1277-1280
Objective To evaluate the applicability and reliability of optical coherence tomography (OCT) technical in detecting the thickness changes of ganglion cell complex (GCC) and outer retinal layers (ORL) in Alzheimer's disease.Method 28 AD patients and 30 healthy control subjects were recruited.SD-OCT was used to measure the macular ganglion cell complex thickness and outer retinal thickness.Cognitive function was evaluated by Mini-Mental State examination (MMSE).Intra-ocular tension and axis length were measured at the same time.Results OCT data shows statistic difference of ganglion cell complex thickness between AD group and control group,while there is no significant difference of outer retinal layers thickness between the two groups.Significant correlations between GCC thickness and MMSE scores were observed.There was no significant correlation between the MMSE scores and the ocular tension.Conclusions Retinal thickness reduction of AD patients can be detected by OTC,and could be related with disease progression.OCT can be used to screen the early stage AD patient.
5.Material of tendon transplant and technique of tissue engineered tendon transplant
Jige CHEN ; Kaijun LIU ; Xiangjun BAI
Chinese Journal of Tissue Engineering Research 2007;11(5):994-996,1000
OBJECTIVE: To summarize the achievements of technique of tissue engineered tendon transplant on the basis of recent development of materials of tendon transplant at home and aboard.DATA SOURCES: A computer-based online search of Medline database was undertaken to identify articles about materials of tendon transplant and technique of tissue engineered tendon transplant published in English from January 1980 to January 2005, and the keywords were "tendon transplant, tissue engineer, progress". Meanwhile, Chinese relevant articles published between January 1990 and January 2005 were reviewed in CBM database with the keywords of "tendon transplant, tissue engineer, summarization" in Chinese.STUDY SELECTION: Relevant literatures about materials of tendon transplant and technique of tissue engineered tendon transplant were retrieved firstly, and the full-tests were further searched. Those about the materials of tendon transplant and technique of tissue engineered tendon transplant were selected; however, the reviews, repetitive studies and Meta analytic ones were excluded.DATA EXTRACTION: Among 45 articles, 30 ones about materials of tendon transplant and technique of tissue engineered tendon transplant met the required criteria.DATA SYNTHESIS: Main materials of tendon transplant are as follows: autologous tendon, allogeneic tendon, artificial tendon and tissue engineered tendon. Recently, studies on allogeneic tendon are more and more favorable. In late 1980s, establishment and development of tissue engineering bring a new way for repairing deficiency of tendon tissue.Studies on tissue engineered tendon are designed to transplant made-up tendon in vitro to deficient site of tendon in vitro in order to recover articular function. At present, we devote ourselves to study cytoskeleton which is characterized by virtues of both two materials. Combination with tendon cells in vitro can produce a nonvolatile and active tissue engineered tendon.CONCLUSION: Main materials of tendon transplant are as follows: autologous tendon, allogeneic tendon, artificial tendon and tissue engineered tendon. Further application of seed cells and extracellular matrix (ECM) will develop the research in tissue engineered tendon.
6.Comparison of clinical features of autoimmune encephalitis with viral encephalitis in patients with limbic encephalitis syndrome
Bo DENG ; Xiang LI ; Xiangjun CHEN
Chinese Journal of Neurology 2017;50(6):413-418
Objective To investigate the frequency of autoimmune encephalitis (AE) in limbic encephalitis (LE) syndrome and compare its clinical features with viral encephalitis.Methods Patients diagnosed with LE syndrome who admitted to Huashan Hospital between December 2015 and June 2016 were enrolled and screened for autoantibodies associated with AE (anti-N-methyl-D-aspartate receptor, anti-α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor, anti-gamma-amino-butyric acid B-receptor, anti-leucine-rich glioma inactivated 1 and anti-contactin-associated protein-like 2 antibodies) in cerebrospinal fluid (CSF) and serum. Their clinical features and auxiliary examinations were also collected and analyzed retrospectively. Results Fifty-four patients were diagnosed with LE syndrome, including 35 males and 19 females. The age of these patients was (38.98±17.29) (15-75) years. Twenty patients (37.0%) were identified as AE, 17 patients (31.5%) as viral encephalitis. Other cases included three (5.5%) with neurosyphilis, one (1.9%) with glioma and 13 (24.1%) of unknown cause. Young patients(15-29 years old)and patients older than 45 years accounted for 46.0% (17/37) and 37.8% (14/37) of all AE and viral encephalitis cases respectively. Patients with AE had longer disease progression time than patients with viral encephalitis ((22.45±11.62) d vs (6.24±2.95) d, t=6.015, P<0.01).Emergency hospitalization of patients with AE was less frequent than that of patients with viral encephalitis (3/20 vs 12/17, P=0.001). Patients with AE were less common to present with fever at disease onset than patients with viral encephalitis (8/20 vs 15/17, P=0.006). Seizures as the first neurological symptom were less common in AE than in viral encephalitis (2/20 vs 8/17, P=0.023). White blood cell counts in CSF were less frequently elevated in AE than in viral encephalitis (7/17 vs 12/15, P=0.036). The differences of age, gender, disease severity as well as abnormal rates of brain MRI, electroencephalogram and CSF protein were not statistically significant between the two groups. Tumors were discovered in 6 (6/19) patients with AE. Conclusions The frequency of AE in LE syndrome is not low. It is worthwhile to screen for autoantibodies associated with AE in patients diagnosed with LE syndrome. AE and viral encephalitis have their own characteristics, which could offer help in differential diagnosis between them and application of effective treatment.
7.Pingyangmycin Local Injection Under Suspension Microlaryngoscopy for Hemangioma at Laryngopharyngeal and Laryngeal in 22 Cases
Xiangjun CHEN ; Jianjian HUANG ; Guoyi LI
Herald of Medicine 2015;(5):621-623
Objective To study the therapeutic effect of pingyangmycin local injection under suspension microlaryngoscopy for treatment of laryngopharyngeal and laryngeal hemangioma. Methods The total of 44 cases of patients with laryngopharyngeal or laryngeal hemangioma were randomly divided into the experimental group ( n=22 ) and the control group (n=22). They were treated with bleomycin 5 mg or pingyangmycin 4-8 mg injection under suspension microlaryngoscopy in the hemangioma, respectively. If the treatments were not curative, repeated one more times in intermittent 15 d, but not more than 3 times. Therapeutic effect and adverse effect were recorded and analyzed. Results The total effective rate (95. 4%)in the experimental group was significantly better than that (59. 1%) in the control group (P<0. 05),and side reaction in two groups showed no significant variation. Conclusion Pingyangmycin local injection for treating laryngopharyngeal and laryngeal hemangioma is effective, less adverse reaction.
8.Hepatic cell apoptosis was triggerred by HBx accumulation and independent on verapamil.
Haiping, WANG ; Xiaoping, CHEN ; Xiangjun, BAI
Journal of Huazhong University of Science and Technology (Medical Sciences) 2004;24(3):281-3
In order to study the roles of HBx and calcium inhibitor verapamil in apoptosis of human normal hepatic cells, L02-off, a pTet-off stably integrated human hepatic cell line was established, in which HBx expression was tightly induced by Doxycycline. The effect of different amounts of HBx and verapamil on apoptosis of human normal hepatic cells was detected. The study showed that apoptosis was triggered by accumulation of intracellular HBx, while verapamil had no effects on the apoptotic process. It was concluded that apoptosis mediated by HBx was dose-dependent but calcium-independent.
Apoptosis/*drug effects
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Calcium/pharmacology
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Calcium Channel Blockers/pharmacology
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Cells, Cultured
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Dose-Response Relationship, Drug
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Hepatitis B Antigens/pharmacology
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Hepatocytes/*cytology
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Trans-Activators/*pharmacology
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Verapamil/*pharmacology
9.Influence of elicitors on growth and baicalin biosynthesis in hairy root of Scutellaria baicalensis
Xiangjun QI ; Lekang GUO ; Weina CHEN
Chinese Traditional and Herbal Drugs 1994;0(05):-
Objective To study the influence of elicitors on growth and baicalin biosynthesis in hairy root of Scutellaria baicalensis(HRSB).Methods The elicitors from the solution of Ca2+,Mg2+,Co2+ and fungal elicitors extracted from Aspergillus niger,A.oryzae,and Armillaria mellea were cocultivated with HRSB and the content of baicalin was determined by HPLC.Results Every elicitor has different influences on the growth and baicalin biosynthesis.When the concentration of A.niger was 40 mg/L,A.oryzae was 20 mg/L,and the Co2+ is 1.53?10-4 mmol/L,the content of baicalin increased respectively to 9.18%,8.81%,and 8.62%.Conclusion Elicitors could improve some specific secondary metabolic synthesis.The test implies that the elicitors of A.niger,A.oryzae,and Co2+ could effectively improve the synthesis of baicalin.
10.Cell suspension culture of Gentiana macrophylla(Ⅰ)
Xiangjun QI ; Ruyi CHEN ; Wei WANG
Chinese Traditional and Herbal Drugs 1994;0(03):-
Objective To establish cell suspension culture system of Gentiana macrophylla.Methods Good cell line was selected by the methods of small cell aggregate and the effects of different media,inoculation age of cells,initial pH value,culture temperature,and rotation speed on cell growth and gentiopicroside accumulation were investigated.Results The eligible cell suspension culture conditions were:MS media as the basic medium,cells with inoculation age of 15 d,initial pH 7,and rotation speed of 110 r/min at 25 ℃,culturing in Erlenmeyer flasks.Conclusion Optimal cell suspension culture system of G.macrophylla has been established by shake flasks.The different effects of media on cell growth and gentiopicroside accumulation indicate that some inorganic ions have significant effects on regulation.