2.A case of child myiasis.
Guo-guang XIAO ; Jian-jun DENG ; Lin LIAO
Chinese Journal of Pediatrics 2010;48(9):719-719
Child, Preschool
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Humans
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Male
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Myiasis
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diagnosis
4.Monitoring results of individual doses to medical radiation workers in Jiangxi province from 2014 to 2018
Ning ZHOU ; Lei DENG ; Zhe WANG ; Jian WANG ; Yishui CHEN ; Yongquan LIU ; Jun DENG
Chinese Journal of Radiological Medicine and Protection 2021;41(2):116-121
Objective:To analyze the levels of individual doses to radiation workers receiving medical radiation exposure in hospitals in Jiangxi province, so as to provide reference for radiation protection.Methods:The radiation workers of different types in medical institutions in Jiangxi were investigated from 2014 to 2018, involving diagnostic radiology, radiotherapy, nuclear medicine and interventional radiology. Statistical analyses were made of the individual doses to medical radiation workers in the province.Results:The total number of monitored workers were 23 833 with average annual individual effective dose of 0.316 mSv. NR1 and NR5, the ratios of the number of workers receiving annual individual doses exceeding 1 and 5 mSv to the total monitored workers were 4.32% and 0.10%, respectively. During the five-year period, the average annual individual effective dose showed a upward and then downward trend, with peak appearing in 2017. A total of 17 909 diagnostic radiologists were monitored, accounting for 75.14% of the total number of monitored workers. The average annual individual effective dose received by workers was 0.329 mSv, the highest, in interventional radiology, followed by diagnostic radiology 0.318 mSv, nuclear medicine 0.283 mSv, and radiotherapy 0.269 mSv, respectively. There were statistically significant differences among radiation workers of different types ( χ2=489.39, P<0.001). Conclusions:The average annual individual effective dose to the radiation workers in medical institutions in Jiangxi province meets the relevant national standards, but with an upward trend in nuclear medicine. The higher levels of individual doses to radiation workers are seen in primary and secondary hospitals. It should be strengthen the oversight of radiation workers in nuclear medicine and in primary and secondary hospitals.
5.Factors influencing short-term prognosis of tuberculous meningitis in children.
Qiong LIAO ; Jian-Jun DENG ; Si-Yan DENG ; Chao-Min WAN
Chinese Journal of Contemporary Pediatrics 2012;14(5):328-331
OBJECTIVETo study the factors influencing short-term prognosis of tuberculous meningitis (TBM) in children.
METHODSThe clinical data of 137 hospitalized children with TBM between January 2007 and February 2011 were retrospectively reviewed. A total of 30 potential factors influencing short-term prognosis of TBM were evaluated by univariate analysis and multivariate logistic regression analysis.
RESULTSClinical staging showed that of the 137 children 21 cases (15.3%) were in the early stage, 67 cases (48.9%) in the medium stage and 49 cases (35.8%) in the late stage of TBM. The univariate analysis revealed 8 factors associated with a poor short-term prognosis: clinical stage of TBM (late), coma, positive Babinski signs, cranial nerve involvements, paralysis, seizures, obvious abnormalities in brain computed tomography (CT) or magnetic resonance imaging (MRI) and elevated protein concentrations in cerebrospinal fluid (CSF). Factors associated with a favourable short-term prognosis for TBM included glucocorticoid steroids therapy, positive reaction of PPD skin test and an increased length of stay in hospital. Multivariate logistic analysis revealed two independent risk factors for a poor short-term prognosis: clinical stage of TBM (late) (OR: 11.168, 95%CI: 3.521-35.426) and positive signs of meningeal irritation (OR: 4.275, 95%CI: 1.043-17.521). An increased length of stay in hospital was shown as a favorable factor (OR: 0.893, 95%CI: 0.825-0.968).
CONCLUSIONSLate-stage TBM and positive signs of meningeal irritation suggest a poor prognosis, while an appropriately longer length of stay in hospital may contribute to a favorable short-term prognosis for children with TBM.
Adolescent ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Prognosis ; Retrospective Studies ; Tuberculosis, Meningeal ; complications ; diagnosis
6.Study on regulatory effect of Danshensu on lipid metabolism of hyperlipidemia rats.
Juan CHEN ; Jun DENG ; Yu-yan ZHANG ; Jian-guo LI ; Fei-yu WU ; Hai-tong WAN
China Journal of Chinese Materia Medica 2015;40(2):313-317
OBJECTIVETo explore the effect of Danshensu on the lipid metabolism of hyperlipidemic rats.
METHODSixty clean male SD rats were selected. Twelve of them were selected in the basic control group and fed with common foods, and the remaining rats were fed with the high-fat feeds. After the successful modeling, they were randomly divided into the high-fat control group and low dose (10 mg x kg(-1) x d(-1)), medium dose (20 mg x kg(-1) x d(-1)) and high dose (40 mg x kg(-1) x d(-1)) Danshensu (dissolved in saline) groups. Both of the two groups were abdominally injected with the same volume of normal saline once a day for consecutively 30 days. The serum TG, TC, HDL-C and liver ACC1, FAS, HMGR, CPT-I mRNA expressions were detected.
RESULT AND CONCLUSIONDanshensu could inhibit the LDL-C level, timely clear redundant cholesterol and effectively regulate the lipid metablism of hyperlipidemic rats by reducing the TC content, decrease the fatty acid by reducing the FAS mRNA expression, and reduce the synthesis levels of endogenous cholesterol by inhibit the HMGR mRNA expression.
Animals ; Hyperlipidemias ; drug therapy ; metabolism ; Lactates ; pharmacology ; Lipid Metabolism ; drug effects ; Male ; Rats ; Rats, Sprague-Dawley
7.Comparison of BISAP, Ranson's, APACHE Ⅱ and CTSI scores in evaluating the severity of acute pancreatitis
Jinyan ZOU ; Jun LIN ; Sanfeng YI ; Qin XIANG ; Jian SHANG ; Bing XIA ; Changsheng DENG
Chinese Journal of Digestive Surgery 2014;13(1):39-43
Objective To investigate the value of the bedside index for severity in acute pancreatitis (BISAP),Ranson's,APACHE Ⅱ and computed tomography severity index (CTSI) scoring system in evaluating the severity of acute pancreatitis.Methods The clinical data of 385 patients with acute pancreatitis who were admitted to the Zhongnan Hospital of Wuhan University from 2005 to 2011 were retrospectively analyzed.The values of 4 scoring systems including BISAP,Ranson's,APACHE Ⅱ and CTSI in predicting the incidences of severe acute pancreatitis,local complications and death were investigated by Chi-square test and receiver operating characteristic curv e.Odds ratio (OR) was calculated.The differences of areas under the curves (AUC) were analyzed using the Z test.Results The incidences of severe acute pancreatitis,local complications and mortality of patients with BISAP score ≥ 3 were 64.4% (56/87),16.1% (14/87) and 8.0% (7/87),which were significantly higher than 13.4% (40/298),6.4% (19/298) and 0.3 % (1/298) of patients with BISAP score ≤ 2 (x2 =93.4,8.1,19.7,P < 0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with Ranson's score≥3 were 52.7% (48/91),22.0% (20/91) and 7.7% (7/91),which were significantly higher than 16.3% (48/294),4.4% (13/294) and 0.3% (1/294) of patients with Ranson's score ≤2 (x2 =49.2,27.3,18.5,P <0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with APACHE Ⅱ score ≥ 8 were 46.6% (27/58),20.7% (12/58) and 8.6% (5/58),which were significantly higher than 21.1% (69/327),6.4% (21/327) and 0.9% (3/327) of patients with APACHE Ⅱ score≤7 (x2 =17.0,12.8,14.4,P <0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with CTSI score ≥4 were 51.4% (19/37),51.4% (19/37),16.2% (6/37),which were significantly higher than 22.2% (77/347),4.0% (14/347),0.6% (2/347) of patients with CTSI score≤3 (x2 =15.1,95.3,40.1,P < 0.05).The sensitivity,specificity,positive and negative predictive values of BISAP were 58%,89%,64%,86%,respectively,and the AUC was 0.848,which were significantly higher than the other 3 systems (Z =2.02,4.22,4.78,P < 0.05).The sensitivity,specificity,positive and negative predictive values of CTSI were 58%,95%,51% and 96%,respectively,and the AUC was 0.926,which was significantly higher than the other 3 systems (Z =3.99,3.24,4.06,P < 0.05).The sensitivity,specificity,positive and negative predictive values of BISAP were 88%,79%,8% and 100%,respectively,and the AUC was 0.855,with no significant difference compared with the other 3 systems (Z =0.81,0.03,0.14,P > 0.05).Conclusions The accurate rate of BISAP in predicting the severe acute pancreatitis is higher than Ranson's,APACHE Ⅱ and CTSI.The accurate rate of CTSI in predicting the incidence of local complications is higher than the other 3 systems.There is no significant difference of the 4 systems in predicting the mortality.The BISAP scoring system is helpful in early diagnosis of severe acute pancreatitis,and making the individualized treatment plan,thus improving the prognosis of patients.
8.Three Electrodes Biosensor for Alcohol in Whole Blood Based on Multi-wall Carbon-nanotube
Shenghang ZHEN ; Jun ZHENG ; Chaoshi ZOU ; Yan WANG ; Yang ZHU ; Shixiong DENG ; Guoming XIE ; Jian WANG
Chinese Journal of Analytical Chemistry 2010;38(3):389-392
A novel disposable three electrodes blood alcohol biosensor strip was fabricated by a screen printing technique. Multi-wall carbon nanotube(MWCNT), Meldola′s(MB), alcohol dehydrogenase(ADH)and nicotinamide adenine dinucleotide cofactor (NAD+) were modified on the surface of the carbon working electrode. Then hydrophilic membrane was stuck in the outermost of the three electrodes to make a reaction camera of 5 μL. Experimental results indicated that the biosensor possessed good accuracy and stability, the linear response range was 0.5-20 mmol/L with correlation coefficient of 0.9949, detection limit was 0.22 mmol/L, and the response time was less than 15 s. Some influencing factors to the biosensor were investigated, such as the pH, temperature and interferences. Correlation analysis showed that there was a significant correlation between the methods of biosensor and the headspace vapor phase chromatography in 10 whole blood samples(r=0.97583). Small volume whole blood sucked using siphonage to detect blood alcohol directly and quantitatively was the obvious character of the biosensor.
9.Study on distribution and dynamic accumulation of catalpol and total iridoid in fresh Rehmannia glutinosa.
Xue-Qi JI ; Peng SUN ; Jian-Jun QI ; Deng-Qun LIAO ; Xian-En LI
China Journal of Chinese Materia Medica 2014;39(3):466-470
Iridoid glycosides were the main active ingredient of Rehmannia glutinosa, of which catalpol has the highest content. This work will provide theoretical basis for metabolic study and cultivation of iridoids on the basis of the dynamic accumulation of catalpol and total iridoids in the growth of R. glutinosa. The samples of rehmannia 85-5 were gathered in the same filed from July to October. The contents of catalpol and total iridoid glycosides were measured by HPLC and specteophotometric, respectively. The results showed that youngest leaves had the higher content of catalpol and total iridoid glyosides than that of the other two leaf ages in the same growth stage from July to September, while their content of catalpol and total iridoid glycosides were all decreased as the growth of leaves of R. glutinosa. The content of catalpol didn't differ significantly from July to September, whereas it has significantly increased in October in the three leaf stage. In the same stage, the wider the root diameter is, the higher content of the effective components are. In August and September, the total iridoid glycosides have the fastest accumulation. The content of catalpol was increased as the accumulation of total iridoid glycosides.
Iridoid Glucosides
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metabolism
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Iridoids
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metabolism
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Plant Roots
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metabolism
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Rehmannia
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growth & development
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metabolism
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Seasons
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Water
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metabolism
10.Characterization of Melanin Produced by a Wild-type Strain of Bacillus cereus
Jian-Ping ZHANG ; Jun CAI ; Yin-Yue DENG ; Yue-Hua CHEN ;
Microbiology 1992;0(01):-
Bc58 is a UV resistant wild type strain that has an ability to produce a sorrel pigment induced by L-tyrosine.The FT-IR spectra and chemical tests of its pigment are similar to that of the standard melanin(Sigma).By bioassay shows that the LC_(50) of a Bt formulation added with the melanin of Bc58 and exposed to UV for 5 h is 16.1?g/mL,which is similar to that of Bt formulation without treated with UV,however,it is almost double higher than that of Bt formulation exposed to UV without the melanin of Bc58.The result of SDS-PAGE indicates that the melanin of Bc58 can protect the insecticidal crystal proteins from degradation.It suggests that an excellent UV protective agent to the insecticidal crystal proteins of Bt formulation.