1.Some insights into clinical detection and analysis of serum lipoprotein for studies on integrated traditional Chinese and western medicine
Min ZHANG ; Yunqin CHEN ; Bingsheng YIN
Journal of Integrative Medicine 2004;2(2):154-8
Dyslipoproteinemia is correlated with the occurrence and development of atherosclerosis and cardiocerebral vascular diseases. The metabolism of serum lipoprotein, however, is a complicated and ordered metabolic process. On one hand, every organ, tissue and even cell of the body participates in and affects the state of serum lipoprotein dynamic balance (SLDB) in different degrees. On the other hand, SLDB is a direct factor for maintaining the normality of whole vascular system, especially the vascular endothelium system. The serum lipoprotein dynamic imbalance, as an inducement or even etiological factor, can bring about various clinical diseases. Therefore, integrated analysis is needed to appropriately assess the state of SLDB. It is suggested that serum lipoprotein dynamic imbalance syndrome should be the key risk factor for those related diseases. Serum lipoprotein electrophoretogram can ideally express the state of SLDB and be taken as a new index for cognizing the serum lipid metabolism and the function of speen-qi to distribute Jing (Essonse) in the integrated traditional Chinese and western medicine. Practice has showed that concrete integration and bilateral development should be one of the main tasks in current researches of integrated traditional Chinese and western medicine.
2.Effects of propofol and thiopental on the changes of blood-brain barrier permeability in focal cerebral ischemia reperfusion injury in rats
Hong WANG ; Yunqin SONG ; Zhijian ZHANG
Chinese Journal of Anesthesiology 1997;0(11):-
Objective To observe the effects of propofol or thiopental on the changes of blood brain barrier (BBB) permeability in focal cerebral ischemia Methods Focal cerebral ischemia model was induced with occluding the middle cerebral artery (MCA) Sixty adult male SD rats were divided randomly into 5 groups: control group(group MC): without any anesthetics; propofol pretreated group (group MP1) or thiopental pretreated group (group MT1): intravenous bolus of propofol 20mg/kg or thiopental 40mg/kg, followed by intravenous infusion of propofol or thiopental at rate of 50 60 mg?kg 1 ?h 1 or 100 120 mg?kg 1 ?h 1 ,respectively ,to achieve and maintain the EEG burst suppression 30 min before MCA occlusion until the beginning of reperfusion; propofol therapy group (group MP2) or thiopental therapy group (group MT2): from the beginning to the end of the reperfusion , propofol or thiopental was administered at the same dose as group MP1 or group MT1; Blood pressure, P ET CO 2, ECG and EEG were monitored throughout the experiment Rectal temperature was maintained between 37 5℃ and 38 5℃ At the end of the experiment, after intravenous bolus of 2% evans blue dye(EB) 3ml/kg, the brain was taken out to check out the extends and areas of EB staining on the surface and standardized serial coronal sections of the brain ,under the optical microscope and electromicroscope Results 1 Both propofol groups did not alleviate BBB permeability changes and cerebral damage 2 Cerebral injury was most slightly in group MT1 3 BBB permeability and brain injury in group MT2 were slighter than those in group MC and MP1, MP2 Conclusions Thiopental at the dose maintaining EEG burst suppressioncan can reduce the brain injury induced with ischemia and reperfusion, with the better protective effects following the prophylactic administration Propofol at that dose can not improve the cerebral ischemic reperfusion injury
3.INFLUENCE OF SEVOFLURANE ON BLOOD BRAIN BARRIER PERMEABILITY IN RATS
Hong WANG ; Yunqin SONG ; Zhijia ZHANG
Medical Journal of Chinese People's Liberation Army 1983;0(02):-
To observe the influence of different concentrations of sevoflurane on blood brain barrier permeability in rats, thirty adult male SD rats were randomly divided into three groups: control group (without general anesthetics), 1 MAC sevoflurane and 1.5 MAC sevoflurane groups (maintaining end expiratory concentration to 2.2% and 3.3% respectively for 1 hour). Before the end of the experiment, 2% Evans′ blue dye (EB, 3ml/kg) was intravenously injected. The range and areas of EB staining on the surface and standardized serial coronal section of the brain were assessed. The brain was also observed under the light microscope and electron microscope. The results indicated that sevoflurane at both concentrations did not increase the permeability of BBB to EB and lanthanum, and there were no significant changes in morphological features of central nervous system after inhalation of sevoflurane.
4.Effect of acupuncture on the ultramicrostructure of the injured lumbar nerve and inflammatory medium of rats
Yaochi WU ; Yunqin YU ; Junfeng ZHANG
Chinese Journal of Tissue Engineering Research 2005;9(37):182-184
BACKGROUND: Lumbar spinal nerve root compression causes the damage of neural function and abnormal neural action of lumbar spinal nerve root, which is related not only to mechanical injury of the compressed but also to inflammatory reaction.OBJECTIVE: To establish the animal model of lumbar nerve root compression and investigate the effect of acupuncture on the ultramicrostructure of the injured lumbar nerve and inflammatory medium of rats.DESIGN: A randomized controlled trial.SETTING: Department of Acupuncture & Moxibustion, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University.MATERIALS: The study was conducted in the Experimental Animal Center of Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University from January 2001 to January 2004. Totally 90 healthy male Wistar rats were randomly divided into model group and model + electroacupuncture group with 45 rats in each.METHODS: Clominorex was injected intraperitoneally for anesthesia.With interspace of spinous process of L5-6 as the center, the special silica gel slice was placed where the right side of L5 nerve root ran out of the dura mater sac, stabilized, sutured layer by layer, and covered with the aseptic gauze. Modeling group: No special disposal was made and the rats were fed regularly after modeling. Modeling + electro-acupuncture group:One day after modeling, a filiform needle of 28 gauge and 3.3 cm (1 inch)was used to puncture Huantiao and Yanglingquan points of the right hindlimb and Jiaji point of the right side of the oppressed nerve root. The oppressed injured lumbar nerve tissue was disposed after 15 days of modeling and 30 daysof modeling + electro-acupuncture, and observed with the optic microscope and electron microscope. The content of inflammatory medium such as prostaglandin E2 and5-hydroxy tryptamine was measured.MAIN OUTCOME MEASURES: [1] Results of damaged lumbar nerve root tissues under the electron microscope and light microscope; [2] content of inflammatory medium such as prostaglandin E2 and 5-hydroxy tryptamine.RESULTS: All the 90 rats entered the final analysis. [1] Hyperemia around the nervous tissues, edema and nerve root demyelination of electroacupuncture 15 days (model + electro-acupuncture group) were relieved.The structure of Schwann cells was normal. Massive inflammatory cells gathered around the nervous tissues in 30-day model group (model group).There was severe demyelination of nerve root tissues, and the gap between the nervous tissues widened and red blood cells leaked out. Demyelination of electro-acupuncture 30-day group (model + electro-acupuncture group)became mild and the edema in nerves was alleviated. [2] The content of prostaglandin E2 in the locally oppressed rat lumbar nerve tissues of 15-day and 30-day model + electro-acupuncture groups was obviously lower than that in 15-day and 30-day model groups [(61.17±9.77), (76.65±7.39) ng/L;(56.05±7.98), (71.04±6.99) ng/L, P < 0.01], while the content of 5-hydroxy tryptamine in the locally oppressed rat lumbar nerve tissues of 15-day and 30-day model + electro-acupuncture groups was obviously lower than that in 15-day and 30-day model groups [(1 413.4±194.5), (2 587.7±214.7) ng/L;(780.4±133.0), (1 355.0±147.7) ng/L, P < 0.01].CONCLUSION: Electro-acupuncture can alleviate inflammatory reaction around the injured lumbar nerves and improve the ultramicrostructure of lumbar nerve root. It has the effect of decreasing the content of prostaglandin E2 and 5-hydroxy tryptamine in oppressed lumbar nerve root tissues and partially inhibiting inflammatory reaction.
5.Pathogenic organisms analysis of 259 cases of suppurative endophthalmitis
Yunqin ZHANG ; Yuguo KANG ; Qiuni LIU
Chinese Journal of Primary Medicine and Pharmacy 2015;(z1):11-13
ObjectiveToanalyzethepathogensofsuppurativeendophthalmitis,theirdistributionanddrug susceptibility.Provide valuable information for the clinical options in effective use of antimicrobial agents.Methods Collected 259 cases of endophthalmitis from the patients with aqueous humor and vitreous fluid for pathogens and drug sensitivitytestinordertocarryontheanalysisoftheresults.Results 113casesofbacterialculturepositivein259 cases of specimens,with a detection rate of 43.63%.6 cases of multiple bacteria infection,and 2 case of fungal infec-tion.The total separation of pathogens was 120 strains.89 strains were gram positive coccus,accounting for 74.17%, 11 were gram positive bacillus strains, accounting for 9.17%, 13 strains of gram-negative bacilli, accounted for 10.83%,gram-negative in 5strains(4.17%),fungus in 2strains(1.67%).Conclusion Main pathogenic bacteria suppurative endophthalmitis is gram-positive, the pathogen species distribution and antimicrobial susceptibility of change should be timely monitored and the rational using of antibiotics can reduce the generation of drug-resistant strains.
6.The role of positron emission tomography in differentiating tumor recurrence from radiation necrosis in brain glioma patients
Yunqin LIU ; Liting QIAN ; Shicun WANG ; Hongyan ZHANG ; Jun MA ; Yufei ZHAO ; Guanghu LI
Chinese Journal of Radiation Oncology 2011;20(3):186-188
Objective To evaluate the role of 11C-methionine positron emission tomographv(MET PET-CT)in differentiating tumor recurrence from radiation necrosis in brain slioma patients.Methods From June 2008 to September 2009,30 brain glioma patients with suspected tumor recurvence or radiation necrosis after radiotherapy were evaluated by MET PET-CT.The median time between initial radiotherapy and PET examination was 13.5 months.Tumor recurrence were confirmed by histological analysis while necrosis was based on histological analysis or the subsequent clinical follow-up.Results Eighteen out of 19 patients were histologically confirmed tumor recurrence among those tumor recurrence shown by MET PET-CT after surgery or stereotactic biopsy.11 patients were considered to have radiation necrosis because of stable neurological sympotoms and without massive enlargement of the lesion during the after follow-up.The sensitivity,specificity and accuracy of MET PET-CT for detecting tumor recurrence were 100%,91.7%and 96.7%respectively.Conclusion MET PET-CT is a powerful tool in differentiating brain tumor recurrence from radiation necrosis after radiotherapy.
7.Clinical application of human serum kallikrein 6 for the diagnosis and monitor of epithelial ovarian cancer
Xufang QIAN ; Xiaojun YANG ; Xiangxiang BAO ; Yunqin CHEN ; Feiyun ZHENG ; Cixia SHUAI ; Wenhui ZHANG
Journal of Chinese Physician 2009;11(6):734-737
Objective The aim of this study was to investigate the clinical value of human serum Kallikrein 6 for the diagnosis and monitor of pithelial ovarian cancer. Methods Serum levels of KLK6 were analyzed with ELISA in 30 cases of epithelial ovarian carcinoma, 20 cases of benign ovarian tumor and 30 cases of healthy women. In the meantime, serum CAi25 was determined with chemiluminescence. Furthermore, serum levels of KLK6 and CA125 were also detected in 12 case of epithelial ovarian carcinoma with the same methods one week and the 3rd month postoperation of follow-up. Results Serum levels of KLK6 in epithelial ovarian carcinoma was higher than that in benign ovarian tumor and healthy women (P < 0.05). KLK6 also showed positive correlation with clinical stage, cytological grade, pelvic lymph node metastasis, recurrent or dead disease (P < 0. 05). On the contrary, KLK6 showed no significant correlation with pathological types (P >0. 05). After surgery of follow-up, KLK6 and CA125 were significantly decreased in 12 case of epithelial ovarian carcinoma (P < 0. 05). Furthermore, the total sensitivity and specificity of KLK6 in the diagnosis of epithelial ovarian carcinoma was 73.3% and 85.0% respectively, followed by the sensitivity to be 50. 0% and 88. 9% for the diagnosis of stage Ⅰ-Ⅱand Ⅲ-Ⅳ disease. Conclusion Our resuits showed KLK6 may be one of the reliable indexes for the diagnosis and monitor of ovarian cancer.
8.Clinical outcome at discharge and its risk factors of extremely preterm infants: a study of 179 cases
Yan ZHUANG ; Xirong GAO ; Xinhui LIU ; Yunqin WU ; Yuee XIONG ; Qiang LI ; Yu LIU ; Qiong ZHANG
Chinese Journal of Neonatology 2017;32(2):86-90
Objective To analysis the clinical outcome at discharge and its risk factors of extremely preterm infants.Method To retrospectively analysis the clinical outcome at discharge and it's risk factors of extremely preterm infants (less than 28 weeks gestation) admitted from September 2008 to August 2014 in our Hospital.Result A total of 179 cases were enrolled.Survival rate was 59.2% (106/179).Unfavorable outcome rate was 74.3% (133/179),among them 73 cases died.The top five causes of death were severe bronchopulmonary dysplasia (BPD) (28 cases),Ⅲ ~ Ⅳ o intraventricular hemorrhage (IVH) (19 cases),sepsis (16 cases) and necrotizing enterocolitis (NEC) (6 cases).Among the 60 survivals with unfavorable outcomes,35 cases had either severe neurologic or ophthalmological sequela,and 25 cases had severe pulmonary sequela.Univariate analysis showed that,comparing with improved group,unfavorable outcome group had higher rates of not receiving prenatal steroids,placental abruption,male,small for gestation age,resuscitation with chest compression,admission age older than 72 hour,severe respiratory distress syndrome (RDS),without pulmonary surfactant (PS) usage,mechanical ventilation beyond 2 weeks and sepsis (P < 0.05).Logistic regression analysis showed that those without prenatal steroids (OR =9.402,P =0.002),small for gestational age (OR =8.271,P =0.018),resuscitation with chest compression (OR =6.325,P =0.023),admission age older than 72 hour (OR =4.174,P =0.028) were independent risk factors for unfavorable outcome of extremely premature at discharge.Conclusion Extremely preterm infants have a higher rate of unfavorable outcome at discharge.Avoid small for gestational age,transfer properly and in time both in utero and after birth,and conduct prenatal steroids could improve their clinical outcome at discharge.
9.Effect of Total Flavonoids of Hippophae Rhamnoides on Contractile Mechanics and Calcium Transfer in Stretched Myocyte
Zhengrong WANG ; Ling WANG ; Huahu YIN ; Fangju YANG ; Yunqin GAO ; Zhujun ZHANG
Space Medicine & Medical Engineering 2000;13(1):6-9
Objective To study the role of total flavonoids of hippophae rhamnoides in improving contactile function of stretched cardiac myocyte.Method Flavonoids were given to stretched myocytes which were proved their contractile function decline and then myocyte contractile mechanics characteristics and calcium transfer were measured.Result Flavonoids increased myocyte contractility,as indicated by myocyte shortening,velocity of shortening,peak+dL/dt and peak-dL/dt during shortening,in a concentration-dependent manner (r>0.9,P<0.001),and with no relation to the intracellular calcium transfer in the myocytes.Conclusion Flavonoids of the traditional Chinese drug hippophae rhamnoids is effective in improving the contractile function of stretched cardiac myocyte in low dosage.
10.Influence of EGFR in B[a]P-induced SIRT1 activation in human bronchial epithelial cells
Min ZHANG ; Yunqin CUI ; Huanfang SONG ; Jianyi LYU ; Xiaohong XU ; Jimin GAO
Journal of Jilin University(Medicine Edition) 2016;42(4):731-736
Objective:To investigate the role of epidermal growth factor receptor (EGFR)in the regulation of B[a]P-induced silent information regulator 1 (SIRT1 ) activation in the human bronchial epithelial cells (BEAS-2B),and to clarify the relationship between EGFR/SIRT1 signal transduction pathway and the occurrence and development lung cancer.Methods:The prediction analysis of transcriptional factor binding sites of SIRT1 was performed by MOTIF SearchTM software.The primary cultivated BEAS-2B cells were divided into control group (without B[a]P exposure)and B[a]P groups (the cells were exposed to B[a]P for 6,12,24,48 h).RT-PCR and Western blotting method were carried out to detect the EGFR mRNA and protein expression levels.The BEAS-2B cells transfected with SIRT1 promotor luciferase reporter gene plasmid were treated with human epidermal growth factor (hEGF)and Genistein (tyrosine protein kinase inhibitor)for 24 h,the morphology of BEAS-2B cells was observed by inverted microscope, and luciferase reporter assay was used to test the SIRT1 transcriptional activity.The human lung tissue biopsies were acquired and the immunohistochemical analysis was used to determine the EGFR protein expression level.Results:The transcriptional factor binding sites of SIRT1 contained EGF, 2Fe-2S and vWF.Compared with control group,the expression levels of EGFR mRNA in B [a]P groups were increased in a time-dependent manner,and reached the peak at 12 h (P < 0.05);the EGFR protein expression levels were also increased (P <0.05).The SIRT1 luciferase activity in hEGF group was increased compared with control group (P <0.05);when hEGF and B[a]P worked together,the SIRT1 luciferase activity was increased even further (P <0.001). The cells showed arrangement and morphologic changes gradually when the B[a]P concentration was above 30 μmol · L-1. Genistein (30 μmol · L-1 )inhibited the increase of SIRT1 luciferase activity induced by B [a]P ,and there was significant difference compared with control group (P <0.05).The immunohistochemistry results showed that EGFR expression level in lung cancer tissue was higher than that in normal lung tissue (P < 0.001).Conclusion:EGFR can regulate the B [a]P-induced SIRT1 expression in BEAS-2B cells,and to cause lung chronic inflammation;EGFR/SIRT1 signal transduction pathway may play a role in the occurrence and development of lung cancer.