1.Development of HIS for medicine warehouse management
Chinese Medical Equipment Journal 1989;0(04):-
Based on Belphi7.0, this paper designs a software of HIS for medicine warehouse management, which can provide timely dynamic information of the medicine. With the application of this software, required medicine can be supplied in time and the overstocking can be diminished, thus not only accelerates medicine circulation, but greatly promotes work and management efficiency. The combination of this software and HIS shows such advantages as quick response, comprehensive information, convenient installment, practical and safe in application, etc.
2.Pharmacokinetics of Pirarubicin in Patients With Breast Cancer
Jianrong HE ; Yan ZHANG ; Jianfeng CHANG
China Pharmacy 2001;12(6):352-353
AIM: To estabish a HPLC assay for the determination of pirarubicin(Pir) in plasma.METHODS: Daunomycin(DM) was used as the internal standard.Plasma samples were extracted with CHCl3∶ CH3OH(2∶ 1) .0.4M NH4Cl buffer(pH=9.0) solution: CH2OH(1∶ 9) and the internal standard were added.Separation was carried out on a 250mm× 4.6mm(5μ m) phenomenex column with 0.04M KH2PO4(pH=3.0) ∶ CH3CN(68∶ 32) as mobile phase.Fluorescent detector was set at an excitation wavelength of 480nm and an emission wavelength of 550nm.RESULTS: The calibration curves for serum Pir was linear over the range of 5~1 000ng/ml(r=0.9 997) .The recovery of Pir was 95.3% .The within-day and between-day variations were less than 5% .T1/2β , CLs, Vd and AUC of Pir were(12.8± 5.9) h, (128.3± 52.6) L/(m2· h) , (1 754.3± 478.2) L/m2 and (428.7± 137.2) ng/(h· ml) , respectively.CONCLUSION: The method is suited for monitoring blood concentration and pharmacokinetic study of Pir.
3.Influence of cytokines on expression of thyrotropin receptor and adipogenesis in patients with Graves ophthalmopathy during the adipogenesis of orbital adipocytes
Yuqing YAN ; Jianfeng HE ; Kaijun LI
Chinese Journal of Tissue Engineering Research 2007;0(28):-
BACKGROUND:Thyroid-stimulating hormone receptor is an autoantigen shared by thyroid follicuar cells and ocular orbital tissues,and cytokines plays an important role on the pathogenesis of Graves ophthalmopathy(GO) . It is still a puzzle that the relation of cytokines and thyroid-stimulating hormone receptor in the pathogenesis of GO. OBJECTIVE:To study the influence of various cytokines on the expression of thyroid-stimulating hormone receptor in the process of adipogenesis of in vitro cultured orbital adipose cells in GO patients. DESIGN,TIME AND SETTING:A single sample observation was carried out in the Central Laboratory,Department of Ophthalmology,Sun Yat-sen University(Guangzhou,Guangdong,Province) from September 2003 to March 2004. MATERIALS:Orbital adipose cells were obtained from eight serious GO patients undergoing orbital decompression. Recombinant human interleukin 2(IL-2) ,IL-4,IL-6,IL-10,and interferon ?(IFN-?) were purchased from PEORO TECH EC Company. METHODS:Orbital adipose cells were cultured and treated by groups. IL-2,IL-4,IL-6,IL-10 and IFN-? was added to the culture media in the experimental group,while no any cytokine was given in the untreated group,and orbital adipose cells were primarily cultured in the control group. The cells were all collected twelve days later. MAIN OUTCOME MEASURES:The expression of thyroid-stimulating hormone receptor was examined with reverse transcriptase-polymerase chain reaction,and the content of cyclic adenosine monophosphate was measured with simultaneous radioimmunoassay. The quantitation of adipose in cells was detected by staining intracytoplasmic lipids with oil red O. RESULTS:The expression of thyroid-stimulating hormone receptor was significantly higher in cells treated with IL-2,IL-4,IL-6 and IL-10 than that in the untreated cells and in the cells treated with IFN-?. Treatment of GO orbital adipose cells with IL-2,IL-4,IL-6 and IL-10 during differentiation resulted in significantly greater cyclic adenosine monophosphate production by different degrees. The highest production achieved in the treatment with IL-6,which was two times as many as control group. The cyclic adenosine monophosphate production was significantly lower in the cells treated with IFN-? than in the untreated cells. CONCLUSION:IL-6,IL-4 and IL-10 can upregulate the expression of thyroid-stimulating hormone receptor in the orbital adipose cells of GO patients,and stimulate adipose differentiation. Conversely,IFN-? can restrain this process.
4.Infection with avian influenza A(H7N9) virus and epidemic analysis
Dan LIN ; Jianfeng XIE ; Yansheng YAN
Chinese Journal of Zoonoses 2017;33(3):185-194,201
The situation of the ongoing fifth epidemic (beginning October,2016) of human infection with avian influenza A (H7N9) virus are more serious than the first four ones.As of March 8,2017,the fifth epidemic reported 40.00% of the cumulative cases.Recently,the pathogenic study reported two new human infections in Guangdong with an influenza A(H7N9)virus strain for which gene sequencing analysis revealed mutations in the haemagglutinin (HA) gene that resulted in the insertion of basic amino acids at the cleavage site of this protein,known to confer increased pathogenicity in chickens.However,most strains show no obvious difference in pathogenic characteristics compared with those detected during the first four waves.Although epidemiological studies showed that 3 clusters with limited human-to-human transmission have been investigated during the current wave,there are no indications of sustained person-to-person spread.Based on epidemic analysis and risk assessment results,it's likely that human infections with H7N9 virus will continue to occur in China,but epidemiological and pathogenic analysis suggested that it's unlikely to have a continued transmission of this virus.Profound public health significance would be presented by strengthening etiology and epidemiology studies of avian influenza A(H7N9) virus.
5.A New Method to Segment Multiple Sclerosis Lesions Using Multispectral Magnetic Resonance Images.
Yan XIANG ; Jianfeng HE ; Lei MA ; Jiaping XU
Journal of Biomedical Engineering 2015;32(2):330-335
Magnetic resonance (MR) images can be used to detect lesions in the brains of patients with multiple sclerosis (MS). An automatic method is presented for segmentation of MS lesions using multispectral MR images in this paper. Firstly, a Pd-w image is subtracted from its corresponding T1-w images to get an image in which the cerebral spinal fluid (CSF) is enhanced. Secondly, based on kernel fuzzy c-means clustering (KFCM) algorithm, the enhanced image and the corresponding T2-w image are segmented respectively to extract the CSF region and the CSF-MS lesions combinatoin region. A raw MS lesions image is obtained by subtracting the CSF region from CSF-MS region. Thirdly, based on applying median filter and thresholding to the raw image, the MS lesions were detected finally. Results were tested on BrainWeb images and evaluated with Dice similarity coefficient (DSC), sensitivity (Sens), specificity (Spec) and accuracy (Acc). The testing results were satisfactory.
Algorithms
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Brain
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pathology
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Humans
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Image Enhancement
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Magnetic Resonance Imaging
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Multiple Sclerosis
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diagnosis
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Sensitivity and Specificity
6.A new model of anterior spinal cord injury syndrome
Jinyu YAN ; Jianfeng LI ; Xu ZHANG ; Zunnan LIU
Chinese Journal of Physical Medicine and Rehabilitation 2011;33(4):241-244
Objective To evaluate a new model of anterior spinal cord injury (SCI) syndrome and to explore the pathophysiology of SCI. Methods Fifty-five Wistar rats were randomly divided into a sham-operated group ( 10 rats) and an experimental group (45 rats). A metal hook was fixed in front of the rats'abdomens to compress the ventral part of the spinal cord in the experimental group. According to the degree and time of compression,the rats in the experimental group were divided into light, moderate, heavy injury subgroups. The tilt board test and the Bosso-Beattie- Bresnahan (BBB) locomotor rating scale were used to assess the rats' behavior at the 1st , 7th andl4th days and after 4 and 8 weeks. The latency of somatosensory evoked potential (SEP) and motor evoked potential (MEP) were measured before and 8 weeks after the operation. Results After the operation the gradients in the tilt board test and BBB scores in the experimental subgroups were all significantly lower than in the sham-operated group. There were also significant differences among the 3 severity subgroups. Eight weeks after the operation the average MEP latencies in the experimental subgroups were significantly longer than in the sham-operated group, and there were also significant differences among the 3 severity sub-groups. MEP in the heavy injury subgroup was significantly longer compared with the sham-operated group. Conclusions Obvious behavioral and neuroelectrophysiological changes were observed in the injured rats. Models of different severity could be prepared and reproduced to simulate clinical SCI.
7.Stereological study on the synapse loss in visual cortex of mouse after prenatal alcohol exposure
Yan XI ; Junshi ZHANG ; Jianfeng ZANG ; Shuguang WEN ; Jinbo DENG
Acta Pharmaceutica Sinica 2010;45(6):705-10
In order to understand the alcohol's toxicity to the quantitative alternations of synapses in mouse visual cortex, the expression of synaptophysin after prenatal alcohol exposure was investigated. In present study, the experimental mice at P0, P7, P14 and P30 were grouped, as control, 2 g x kg(-1) alcohol treatment and 4 g x kg(-1) alcohol treatment. The pre-synaptic elements which were used to represent synapses were marked with synaptophysin (a synaptic vesicle associated protein) by immunocytochemistry technique. The synaptophysin positive boutons in layer VI of visual cortex were imaged under laser confocal microscope. With stereological methods, the number cal density of synapse in visual cortex was calculated in different groups at various ages. Moreover, Western blotting was carried out to detect the expression of synaptophysin in visual cortex. The results showed that prenatal alcohol exposure could cause synaptic loss with long-term effect and in a dose dependent manner. For instance, there were significant difference among the different treatment groups of P0, P14 and P30 as well (P < 0.05). Western blotting supported the results of immunofluorescent labeling. In conclusion, prenatal alcohol exposure can induce the synaptic loss dose dependently and with long-term effect. Our findings implicate that the synaptic loss with long-term effect in CNS probably contributes to the lifelong mental retardation and memorial lowliness associated with childhood FAS.
8.Reconstruct bladder function and prevent urinary tract infection of patients with spinal cord injury
Jinyu YAN ; Jianfeng LI ; Xu ZHANG ; Zunnan LIU
Chinese Journal of Postgraduates of Medicine 2010;33(29):27-29
Objective To observe the effectiveness of comprehensive rehabilitation for neurogenic bladder of patients with spinal cord injury and prevent urinary tract infection (UTI). Methods Fifty-seven patients with spinal cord injury were randomly divided into two groups: treatment group (29 cases) and control group (28 cases). The patients in treatment group were treated with comprehensive rehabilitation,while those in control group were treated mainly with catheterization and TDP equipment. Scored with Barthel index and the rate of UTI. Results It was shown that the improvement of Barthel index after treatment [(8.93 ± 6.27) scores] and the rate of UTI [13.79%(4/29)] were significantly better than those in control group[(5.16 ± 6.82) scores,67.86%(19/28)], which had significant differences (P< 0.05). Conclusion Comprehensive rehabilitation can reconstruct bladder function and prevent UTI of patients with spinal cord injury effectively.
9.Preliminary establishment of indicator system for midwifery quality evaluation guided by evidence-based theory of midwifery quality
Yuejiao ZHAO ; Li HUANG ; Jianfeng ZHANG ; Yan DING
Chinese Journal of Nursing 2017;52(5):592-598
Objective To develop an indicator system for evaluating midwifery quality. Methods Guided by the latest evidence-based framework of midwifery quality,based on indicator selection principle,the indicator system for evaluating midwifery quality was preliminarily developed by literature review,expert meeting,theoretical analysis and expert consultation,for further validation through large-scale Delphi method. Results The indicator pool for mid-wifery quality evaluation was identified by literature review,including indicator name and definition of special indi-cator. The indicator system was finalized through comprehensive analysis and selection,and consisted of 45 indica-tors. The expert consultation questionnaire response rate was 100%,the rate of experts who provided written sug-gestions was 81.3%,the authority coefficient was 0.92,the coefficients of variation of indicators ranged from 0 to 0.29. Conclusion The preliminarily developed indicator system for midwifery quality evaluation guided by the lat-est evidence-based framework of midwifery quality was scientific,oriented and accessible,which could be further ex-amined through large-scale Delphi method.
10.Design of an injury device to establish spinal cord dorsal compression injury models in rats
Jianfeng LI ; Shiqing FENG ; Runfu XIA ; Jinyu YAN
Chinese Journal of Tissue Engineering Research 2015;(18):2856-2861
BACKGROUND:With the development of spinal cord injury study, different methods of establishing spinal cord injury models have emerged, including spinal cord contusion, fal ing weight, spinal compression, chemical burn, radiation, hormone, spinal transection and hemi-section. However, lots of them are not perfect enough.
OBJECTIVE:To design the injury device of spinal cord injury and establish different degrees of spinal cord injury models.
METHODS:To design the device of producing spinal cord injury and establish different degrees of spinal cord dorsal compression injury in Sprague-Dawley rats by various weights (m1=10 g, m2=20 g, m3=30 g) and time points (T1=3 s, T2=5 s). Rats were randomly divided as m1T1, m2T1, m3T1, m1T2, m2T2 and m3T2 groups. While sham group was also made.
RESULTS AND CONCLUSION:Basso-Beattie-Bresnahan (BBB) score in injury groups decreased significantly after operation, when compared with the sham group (P<0.01). The m 1T1 group showed no significant difference in BBB score from other groups (P<0.01). The BBB score of m1T2 group was significant higher than m2T2 group and m3T2 group at 8 weeks after operation (P<0.05). The somatosensory evoked potential and motion evoked potential of injury groups were longer than sham group at 8 weeks after operation (P<0.01). The motion evoked potential of each injury groups were significantly longer after operation (P<0.05). The somatosensory evoked potential was significantly longer in injury groups, except m1T1 and m1T2 groups (P<0.05). The self-designed device can be applied to establish different degrees of spinal cord injury models.