1.Effect of differential electroacupuncture frequencies on behavior of acute stress depression model of C57BL/6 mice
Weidong LI ; Jun LU ; Ya TU
Chinese Journal of Behavioral Medicine and Brain Science 2009;18(2):134-135
Objective To explore the effect of different frequencies interference of electoracupuncture on acute stress of C57BL/6 mice. Methods Thirty male C57BL/6 mice were randomly divided into model group,2Hz electroacupunture group and 100 Hz electroacupunture group.After interfering 7 days by electroacupuncture,all the mice were carried forced swimming tests and tail suspension test,and the immobility time in 5 minutes were taken down. Results The immobility time of forced swimming test and tail suspension test of 2 Hz eletroacupuncture group(32.00±14.73)s,(72.50±20.44)s was shorter than those of 100 Hz electoracupuncture group(145.60±34.62)s,(124.22±21.67)s( P <0.05); and the immobility time of 2 Hz eletroacupuncture group was shorter than that of model group(129.50±33.94)s,(142.23±20.05)s( P <0.05); but the immobility time of 100 Hz electroacupuncture group was no difference with that of model group( P >0.05). Conclusions The effect of 2 Hz eletroacupuncture could improve the behaviors of the acute stress of C57BL/6 mice and had the more effectiveness on anti-depression.
2. Use of the American Experiences for Reference on the Intervention of Pharmacists to Prescribing Behavior in China
Chinese Pharmaceutical Journal 2018;53(24):2132-2136
OBJECTIVE: To strengthen pharmacist intervention in prescribing behavior of doctors, so as to further standardize prescribing behavior.METHODS: Through the review of the advantages and disadvantages of the relevant laws, education training and assessment system for prescription intervention in the USA, a deep analysis was made in combination with the Chinese system and the characteristics of the medical staff.RESULTS: A new clinical pathway was introduced to standardize the intervention of doctors′ prescriptions, so as to improve the level of diagnosis and treatment and the environment for medical treatment in China.CONCLUSION: Improving pharmacists′ professional accomplishment and introducing Internet model and intelligent medical technology can improve the linkage among clinical, community medical institutions and social pharmacies, and also enhance the feasibility and reliability of Internet prescription drug purchase intervention. Promote the closed-loop connection and continuous upgrading of the pharmaceutical industry chain, gradually realize the standardization model of diagnosis and treatment, and then promote the results of the overall medical level.
3.Anatomical study of the corneal structures of three experimental animal models by in vivo Confocal microscopy
Lu-lu, WANG ; Yang, JING ; Li-ya, WANG
Chinese Journal of Experimental Ophthalmology 2012;30(7):608-612
Background Noninvasive methods such as in vivo confocal microscopy and Orbscan Ⅱ corneal topography have been used to examine ocular surface structure at the cellular level.However,very few domestic reports about the corneal structures of experimental animals investigated by confocal microscopy are available.Objective This study was to compare the anatomical differences of the corneal structures of three frequently used experimental animals presented by in vivo confocal microscopy,and to offer a database on the information provided by the in vivo study of the corneal structures of these animals.Methods Bilateral corneas of 3 clean adult male New Zealand rabbits,3 clean adult male Lewis rats and 3 clean adult male Swiss mice were examined by in vivo confocal microscopy.The morphological characteristics of every layer of the corneas and the endothelial cell densities were analyzed and compared.Results Superficial epithelium cells of the three animal models were characterized as polygon cells with high or low reflective border.The arrangement of the basal epithelial cells was regular with tight contacts but these cells lacked visible nuclei.The Bowman' s layer of cornea presented as an amorphous sheet containing abundant subepithelial plexus.In the rabbits,a highly reflective structure in the corneal stroma wasconfirmed as the nucleus,and the cell density of the posterior stroma was significantly lower than that of anterior stroma(387.5 cells/mm2 versus 223.5 cells/mm2)(U =0.000,P =0.000).Massive light-reflecting astreoids were displayed in the stroma of the rats and the mice.Corneal endothelial cells(CECs)of the three animal models had similar shapes and arrangements,presenting with high refractive cell bodies with dark borders and honeycomb-like arrangements.The CECs densities were 2192.5,1936.0,1565.0 cells/mm2 in the New Zealand rabbits,Lewis rats and Swiss mice,respectively,showing a statistically significant difference among them(H =49.940,P =0.000),and that of the rabbits was significantly higher than that in the rats and mice(x2 =0.000,P =0.000;x2 =0.000,P=0.000).Significant difference was also seen between the rats and the mice in the CECs densities(x2=0.000,P=0.000).Conclusions The CECs of the three animal modes are similar in morphology.But the structures of their stromal cells and endothelial cell densities are different.The combination of in vivo confocal microscopy and Orbscan Ⅱ corneal topography offers high-resolution imaging for each layer of the cornea.
5. Effects of DACT2 on epithelial mesenchymal transition of glioma cells and its potential mechanism
Journal of Xi'an Jiaotong University(Medical Sciences) 2019;40(3):387-392
Objective: To investigate the effects and potential mechanism of tumor suppressor dishevelled-binding antagonist of beta-catenin 2 (DACT2) on epithelial-mesenchymal transition of glioma cells. Methods: The expressions of DACT2 in glioma cells U87, U251, A172 and SHG44 were detected by RT-PCR after 5-Aza treatment. The methylation status of DACT2 promoter was detected by methylation specific PCR (MSP). Western blot was used to detect the expression of DACT2 protein. U87 cells overexpressing DACT2 were constructed and verified by Western blot. Transwell assay was used to detect cell migratory and invasive ability. The protein levels of E-cadherin, Vimentin, MMP2 and Wnt/β-cadherin pathway proteins, i.e., active-β-cadherin, p-β-cadherin and total β-cadherin, in cells were detected by Western blot. Results: DACT2 expression was observed in all these cells after 5-Aza treatment; untreated U87 and U251 cells did not express DACT2 while A172 and SHG44 cells showed weak expression. The DACT2 promoter was completely methylated in U87 and U251 cells, and partially methylated in A172 and SHG44 cells. The level of DACT2 in U87 and U251 cells was lower than that in A172 and SHG44 cells (P<0.05). After transfection of pcDNA3.1-DACT2, the expression of DACT2 in U87 cells increased significantly (P<0.05), U87 cells overexpressing DACT2 were successfully constructed. Overexpression of DACT2 could significantly inhibit epithelial-mesenchymal transition, invasion and migration of U87 cells and block Wnt/β-catenin pathway activation (P<0.05). Conclusion: The DACT2 promoter in glioma cells is highly methylated, and the exogenous overexpression of DACT2 can promote the epithelial mesenchymal transition, invasion and migration of U87 cells. The underling mechanism may be related to the regulation of Wnt/β-catenin pathway by DACT2.
6.Detection and Analysis of Bacteria Producing Extended Spectrum ?-Lactamases in Children with Lower Respiratory Tract Infection
lu, HUANG ; wei, JI ; jun-hua, WU ; ya-li, LUO
Journal of Applied Clinical Pediatrics 2006;0(22):-
Objective To understand the status and drug resistant patterns of strains of extended spectrum ?-lactamase(ESBLs) in children with lower respiratory tract infection,and to give clinical suggestions for rational treatment.Methods Escherichia coli and klebsiella pneumoniae were isolated from the 2 969 nasopharyngeal secretions which collected from lower respiratory tract of children in our hospital from Jan.2006 to Dec. 2007.Dual-sheets and sheets-diffusing method (K-B method) were used to determine the ESBLs and antibiotic susceptibility was tested by K-B method which included 18 kinds of antibiotics,the results were marked by resistant,intermedial and sensitive.Chi-square test was used to analyze the data.Results Total 135 strains were detected,73 strains were escherichia coli,of which 54 strains(74.0%)produced ESBLs,62 strains were klebsiella pneumoniae,of which 33 strains(53.2%)produced ESBLs.The 2 bacterias were found more in children with 1-6 months old than those in other age groups,the ratio of which were 50 strains and 41 strains,respectively (Pa0.05).The resistant rate of ESBLs-producing strains to penicillins,cephalosporins,quinolones,aminoglycosides and sulfamido was higher than that of non ESBLs-producing strains respectively.And the resistant rates to beta-lactam antibiotics of ESBLs strains were located on a high level.Whether producing ESBLs or not,the 2 bacterias were still sensitive to amikacin,cefoxitin,cefoperazone/sulbactam and imipenem.Conclusions The prevalences of ESBLs-producing escherichia and klebsiella pneumonia were high.There was a multi-drug resistance to the varied antibiotics.It is very important to make sputum culture and use sensitive antibiotics in treatment according to drug sensitivity test to control the occurrence and conveying of the ESBLs.
7.High Risk Factors of Brain Injury in Preterm Infants
ya-dong, LU ; deng-li, LIU ; xiao-ming, BEN
Journal of Applied Clinical Pediatrics 2006;0(24):-
Objective To explore the high risk factors of brain injury in preterm infants,and to reduce its morbidity and improve the developmental outcome.Methods One hundred and thirty preterm infants,who were admitted to our neonatal intensive care unit(NICU)between Aug.2005 and Aug.2007,were scanned by echo in 1,3,4,7,15 days,and 1,3 and 6 months after birth,respectively.Those who had intraventricular hemorrhage(IVH)of grade Ⅰor Ⅱ were regarded as mild brain injury,whereas those who had IVH of grade Ⅲ or Ⅳ or periventricular leukomalacia(PVL)were regarded as severe brain injury.Logistic regression was adopted to analyze 17 factors:gestational age,birth weight,hypertension syndrome during pregnancy,premature rupture of membranes,modalities of delivery,fetal distress,asphy-xiate,resuscitation,surfactant,apnea,seizures,hypoxia,hypercarbia,hypocarbia,acidosis,use of oxygen,nasal constant positive airway pressure or mechanical ventilation.Results Among 130 preterm infants,88 cases(66.7%)were detected with brain injury,which included 29 cases(33%)with mild brain injury(5 cases with IVH of grade Ⅰ,24 cases with IVH of grade Ⅱ)and 59 cases(67%)with severe brain injury(53 cases with IVH of grade Ⅲ,1 case with IVH of grade Ⅳ and 5 cases with PVL).Gestational age and birth weight were the fundamental factors of brain injury in premature infants.The smaller the gestational age and the lower the birth weight,the highter the brain injury rate.Resuscitation,hypoxia,the use of auxiliary ventilation were also important high risk factors of brain injury in preterm infants.All these high risk factors could influence the autoregulation of cerebral blood and trigger or aggravate brain injury of preterm infants.Conclusions Smaller gestational age,lower birth weight,resuscitation,hypoxia,the use of auxiliary ventilation were all the high risk factors of brain injury in premature infants,which could influence the parameters of cerebral blood dynamics by influencing cerebral blood autoregulation of preterm infants and lead to the occurrence of brain injury in premature.
8.Study on Ultrasonic Follow-up on Atheriosclerosis in Familial Hypercholesterolemia
qiang, YONG ; zhi-an, LI ; jie, LIN ; lu-ya, WANG
Journal of Applied Clinical Pediatrics 2006;0(13):-
Objective To identify the arteriosclerosis (AS)changes in peripheral artery and abdominal aorta of patients with familial hypercholesterolemia(FH) during follow-up.Methods Seventeen patients of 6 FH [5 male and 12 female with average age of (16.12?6.65) years old],along with 17 subjects of matching sexes and ages with normal blood cholesterol as healthy control group,underwent examination by color doppler ultrasound,and changes of intima-media thickness (IMT) in peripheral artery and abdominal aorta,severity of stenosis,morphology,and function were observed.Results For 17 patients of FH,the total cholesterol(TC),low density lipoprotein cholesterol(LDL-C) in serum were higher significantly and high density lipoprotein cholesterol (HDL-C) was lower significantly than those in healthy control group(Pa0.05).The IMT of carotid aorta,subclavicular aorta,common abdominal artery,and common femoral artery in 13 patients were showing various degrees of increase,yielding an average of 2.9 mm.As patients aged,this phenomenon was reported to be more profound in common abdominal aorta and femoral artery.Conclusions Patients of FH show AS lesion in early stage and it worsened as they aged,from carotid arteries to common abdominal aorta and femoral artery.Color doppler ultrasound can be a non-invasive examination for monitoring the progress of AS in blood vessels in patients of diagnosed FH.