1.Progress in the pathogenesis of obesity-induced hypertension
Journal of Chinese Physician 2017;19(5):798-800,封3
Obesity is one of the major risk factors of primary hypertension,with the dramatic increase in obesity.Obesity-induced hypertension also gradually increases.Due to promoting the occurrence and development of high blood pressure,obesity has caused wide public concern.In recent years,the pathogenesis of obesity-induced hypertension has become the study hotspot.However,fat and blood pressure relationship is complicated.This review article emphatically reviewed the activation of the sympathetic nervous system,the renin-angiotensin-aldosterone system (RAAS) activation,insulin and insulin resistance,leptin and leptin resistance,the gastrointestinal tract anomalies in the pathogenesis of obesity hypertension of the latest research progress.
2.The mechanism of apoptosis induced by homoharringtonine in HL-60 cells
Chinese Journal of Pathophysiology 2000;0(07):-
AIM: To study the signal transduction pathway of apoptosis initiation induced by homoharringtonine in HL-60 cells. METHODS: After establishing the model of apoptosis initiation induced by homoharringtonine in HL-60 cells, at the point of apoptosis initiation, molecular caspase-3, Bcl-2, Bax and Fas/FasL were measured with flow cytometry and transmission electron microscope. ERK2 and P38 expression in HL-60 cells were detected by using immunohistochemistry. RESULTS: The model of apoptosis initiation induced by homoharringtonine was established in HL-60 cells. At the point of apoptosis initiation, upregulation of caspase-3 and decrease in Bcl-2/Bax were observed. However, the expression of Fas/FasL did not significantly change. ERK2 expression decreased and P38 expression increased. CONCLUSIONS: Caspase-3, Bcl-2, Bax and mitogen activated protein kinase pathways were involved in signal transduction of apoptosis initiation induced by homoharringtonine in HL-60 cells. [
3.Progress in the treatment of loco-regionally advanced nasopharyngeal carcinoma
China Oncology 2000;0(06):-
90% with better sparing of the surrounded normal tissue.However,the metastasis rate is still 20%-25%,which limits the improvement of overall survival(OS).To consolidate the local control rate and reduce the metastasis rate,it is necessary to combine chemotherapy with radiotherapy.According to clinical randomized studies and meta-analysis,chemotherapy can improve the OS of loco-regionally advanced nasopharyngeal carcinoma by more than 6% with radiotherapy alone as baseline.Concurrent chemo-radiotherapy is the most promising strategy to cope with the disease.This review has summarized the progress in the area of combination of chemotherapy and radiotherapy for the treatment of loco-regionally advanced nasopharyngeal carcinoma.
4.Effects of propofol on myocardial NT-κB and INOS during myocardial ischemia-reperfusion in isolated rat hearts
Chinese Journal of Anesthesiology 2008;28(7):648-650
Objective To investigate the effects of propofol on myocardial nuclear factor kappaB(NF-κB)and inducible nitric oxide synthase (iNOS) during myocardial ischemia-reperfusion (I/R) in isolated rat hearts.Methods Twenty-four adult SD rats of both sexes weighing 200-300 g were randomly divided into 3 groups (n=8 each):group Ⅰ control (C) ; group Ⅱ I/R and group Ⅲ propofol + I/R (P).The animals were anesthetized with intrxperitoneal urethane 1.0 g/kg and their hearts were excised.The aorta was cannulated and the hearts were retrogradely pedused with oxygenated K-H solution in a Langandorff apparatus for 20 min.In group C the hearts were continuously perfused with K-H solution for 110 min.In I/R group after 20 min stabilization the hearts were made globally ischemic for 30 min followed by 60 rain reperfusion.In group P the hearts were peffused with K-H solution containing 50 μmol/L propofol for 20 min,the hearts were then made globally ischemic for 30 min followed by 60 min repedusinn with K-H solution containing 50 μmol/L propofol.Cardiac troponinI (cTnI) concentration in coronary effluent was measured at the end of 20 min stabilization before myocardial isobemia (baseline) and at 10 min(T1) and 60 min (T2) of reperfusion.Myocardial specimen was obtained frem left ventricle at 60 min of repeffusion for determination of MDA content,SOD and iNOS activity,the expression of NF-κB and IκB (by immuno-histochemistry).Results The cTnI concentration in coronary effluent was significantly higher at T1 and T2 in group I/R and at T2 in group P than in group C.The NF-κB expression was significantly higher while IκB expression was lower in I/R and P group than in group C.iNOS activity was higher in I/R group than in control group but there was no significant difference in iNOS between group P and C.Propofol administered before and after myocardial ischemia significantly attenuated I/R-induced changes listed above.Conclusion Propofol can attenuate myocardial ischemia-reperfusien injury through reducing the NF-κB activation and suppressing the iNOS activity.
6.Piezoelectric Immunoglobulin Microarray Immunosensor
Chunyan YAO ; Weiling FU ; Qinghai CHEN
Chinese Journal of Nosocomiology 2005;0(11):-
OBJECTIVE To develop new 2?5 type of piezoelectric immunoglobulin microarray immunosensor for determination of immunoglobulin.The energy converters are 10MHz AT-cut quartz crystals with gold-coated(electrodes).The monoclonal antibodies of immunoglobulin are immobilized onto the surfaces of crystals gold(electrodes) by staphylococcal protein A(SPA).METHODS The standard substance and serum were detected to find the detection time,temperature and specificity of the immunosensor.RESULTS The piezoelectric quartz(crystal) immunoglobulin microarray immunosensor could complete the detection in 15 min without nonspecific(response).Under the optimized conditions,the experimental results showed that the piezoelectric immunosensor had good(response) to immunoglobulin whose frequency shifts were linearly dependent on immunoglobulin (concentration) in different range.The piezoelectric microarray immunosensor had been used to detect(immunoglobulin) in serum,the analytical results given by this method were in satisfactory agreement with those given by traditional (immunoassay),with correlation coefficient of 0.94,0.94,0.94,0.92 and 0.91.(CONCLUSIONS) Piezoelectric microarray immunosensor for the determination of immunoglobulin is of high(sensitivity),high specificity,high analysis speed,unnecessary labelling,simple operation,real-time detection,(repeated) use,etc.It is suitable for (detecting) of immunoglobulin and should be used for clinical detection.
7.A case report of spinal cord injury treated by olfactory ensheathing cells transplantation plus acupuncture rehabilitative therapy
Chunyan LUO ; Hongyun HUANG ; Lin CHEN
Chinese Journal of Tissue Engineering Research 2007;0(07):-
To cure one patient with spinal cord injury (SCI), who hospitalized for both legs couldn't moving for 21 years after external injury, by using the olfactory ensheathing cells (OECs) transplant and acupuncture treatment. The patient was diagnosed as ischemic SCI (below the T11) according to the neurological test and MRI for dorsal vertebra. T11 spinous process was made to be the center mark through operation with the length of about 3 cm. The area between the atrophique spinal cord and normal spinal cord without vessel was selected and injected with OECs 0.5?109 L-1. Hemostasis, stitching, binging and fixation were performed respectively, and normal treatment was given by using antibiotics. At 14 days after operation, the temperature on skin increased a little, and acupuncture treatment and rehabilitation therapy were performed. The acupoints were as following: Baihui (DU21), Yintang (EX-HN3), Hegu (LI4), Zhongji (RN3), Guanyuan (RN4), Biguan (ST31), Fengshi (GB31), Futu (ST32), Dubi (EX-LE5), Zusanli (ST36), Xuehai (SP10), Yinlingquan (SP9), Sanyinjiao (SP6), Jiexi (ST41), Taixi (KI3), Fuliu (KI7), Taichong (LR3), and Shenmai (BL62). The treatment was given by mild reinforcing and attenuating with 30-minute retention. The rehabilitation: The needle pressing, manipulation for muscular atrophy, bicycle practicing, andimperative standing were performed. After 2 weeks, the skin temperature of the patient increased with obvious improvement in his right leg. The physical strength of the patient was reinforced with less perspiration, and the patient could walk 3 km without fatigue, which indicated that after OECs transplant, treatment with acupuncture, massage and other rehabilitation trainings could facilitated the improvement of SCI of the advance stage as well as the amelioration of muscular atrophy.
8.Research advances in clinicopathological features of patients with chronic HBV infection and normal alanine aminotransferase level
Yanping LI ; Chunyan LI ; Yanping CHEN
Journal of Clinical Hepatology 2017;33(8):1568-1571
It was generally considered that patients with chronic HBV infection and normal alanine aminotransferase (ALT) level had no or mild liver pathological changes,but in recent years,a large number of studies have found that such patients may also have marked inflammation and fibrosis in the liver.This article discusses the association between clinical features and liver pathological features in patients with chronic HBV infection and normal ALT level and points out that age,sex,HBeAg status,HBV DNA load,ALT level,and liver stiffness measurement are associated with liver pathological changes.Monitoring of these clinical indices helps with early detection of liver pathological changes in patients with chronic HBV infection and normal ALT level.
9.Research on the IgE, EOS, LTE-4 content and its clinical significance with the inacute phase of pediatric asthma
Junfang GONG ; Chunyan WANG ; Jiaolei CHEN
Chinese Journal of Biochemical Pharmaceutics 2017;37(2):300-301,304
Objective To explore the clinical significance of total serum immunoglobulin ( IgE) , peripheral blood eosinophils ( EOS) and urinary leukotriene E4 ( LTE-4 ) detection on pediatric asthma clinical symptoms of the inacute phase .Methods 90 cases with pediatric asthma clinical symptoms of the inacute phase from March 2014 to March 2015 were selected as experimental group, and divided into the general asthma group(n=32), the moderate asthma group(n=31), the sereval asthma group(n=27) and another 30 health children as control group.Give each patients children doses of β2 agonists (LABA) as monotherapy, and inhaled corticosteroids (ICS) used as combination therapy.The use of LABA is 3-4 times/d.After three months' treatment, clinical efficacy were evaluated, and IgE, EOS, LTE-4 content were detected.Results After 3 months' treatment, IgE, EOS, LTE-4 contents in three experiment groups were significantly decreased (P<0.05), improved to the basic condition compared to control groups.The clinical efficacy among three groups had no significant differences.Conclusion IgE, EOS, LTE-4 levels detection of patients with pediatric asthma clinical symptoms of the inacute phase had evaluation significance, can be a good indicator of pediatric asthma health recovery in patients of the inacute phase.
10.Study Status of Quality Control and Analysis Methods for Vitamin C Injections
Chunyan SUN ; Tianming DING ; Ninglin CHEN
China Pharmacist 2014;(5):868-870
Vitamin C injections are a national essential drug with wide clinical applications and instable property. In order to pro-vide the reference for further analysis on the quality status of vitamin C injections and improve the quality,the research on the stability, quality control and analysis methods was summarized in the study.