1.Preventing hearing loss from portable music player use.
David KOH ; Joyce Jeanne LIM ; Peter LU
Singapore medical journal 2014;55(3):171-172
Female
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Hearing Loss, Noise-Induced
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diagnosis
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Humans
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Leisure Activities
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Male
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Music
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Noise
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adverse effects
2.Detection of the diagnosis about primary hepatocellular carcinoma with the AFP-IgM immune complexes in serum
Jingting JIANG ; Changping WU ; Jun WU ; Xihu QIN ; Dacheng SUN ; Mei JI ; Bin XU ; Haifeng DENG ; Mingyang LU ; Guoping ZHOU ; Min LI ; Xiao ZHENG ; Jian LIU ; Liangrong SHI ; Xu NING ; Nilssonehle PETER
Chinese Journal of Laboratory Medicine 2008;31(7):789-792
Objective To evaluate the significance of AFP-IgM, this is one of new tumor markers, in the diagnosis of primary hepatocellular carcinoma (PHC). Methods The contents of AFP-IgM and AFP in serum of 103 healthy subjects, 74 patients suffered primary hepatic carcinoma, 27 patients affected by liver cirrhosis and 63 patients affected by chronic hepatitis were detected by means of enzyme linked immunosorbent assay and electrochemiluminescence. No-PHC is comprised of liver cirrhosis,chronic hepatitis and health subjects as control group. Results The area under ROC curve of AFP was larger than that of AFP-IgM (0.85 vs 0.72, Z=3.21) and the best cut-off value of AFP-IgM and AFP was 3×105-AU/L and 10 ug/L respectively, which was determined by ROC curve. Under the cut-off value, the sensitivity of AFP- lgM and AFP for PHC were 64.9% and 79.7%, and the specificity were 75.6% and 80.3%, yet their efficacies were similar. However, for early diagnosis of liver cancer (stage Ⅰ and Ⅱ), the area under ROC curve of AFP-IgM was larger than that of AFP (0.91 vs 0.82,Z=1.73). The sensitivity of AFP-IgM andAFP were 94.4% and 72. 2%, and the specificity were 81.9% and 79.9%. The differences of AFP-IgMand AFP for early diagnosis of liver cancer were statistically significant. When both of the test results combined AFP-IgM with AFP are positive, it can be diagnosed as liver cancer. The specificity of combineddetermination of the two forms was 89.1%, and the efficacy was 79. 0%. Conclusions Both of thesensitivity and specificity of the AFP-IgM test were higher than that of the AFP for early diagnosis of livercancer. We also found that combined determination of the two forms significantly increased the specificityand the positive predictive value for the diagnosis of PHC, thus AFP-IgM was of especially significance forearly diagnosis of liver cancer.
3.Validity assessment and determination of the cutoff value for the Index of Complexity, Outcome and Need among 12-13 year-olds in Southern Chinese.
Zheng-Yu LIAO ; Fan JIAN ; Hu LONG ; Yun LU ; Yan WANG ; Zhi YANG ; Yu-Wei HE ; Peter WAMALWA ; Jing WANG ; Nian-Song YE ; Sheng WANG ; Wen-Li LAI
International Journal of Oral Science 2012;4(2):88-93
To validate the use of the Index of Complexity, Outcome and Need (ICON) in assessing orthodontic treatment need among 12-13 year-olds in southern China, we determined the threshold value of ICON based on Chinese orthodontists' judgments. The samples consisted of 335 students in grade 7 from 16 randomly selected middle schools in Chengdu, China. Three associate professors provided ICON scores for each participant and the results were compared with the gold standard judgments from 25 experts on treatment needs. Based on the gold standard, 195 casts belonged to the treatment category, while the rest 140 belonged to the no-treatment category. With the international cutoff point of 43, the sensitivity and specificity of the ICON score were 0.29 and 0.98.The best compromise between sensitivity and specificity in Chengdu, compared with the gold standard, was found at a cutoff point of 29, and the sensitivity and specificity were 0.88 and 0.83. When used to evaluate the treatment need of 12-13 year-olds in southern China, the international ICON cutoff value did not correspond well with Chinese orthodontists' judgments; a lower cutoff value of 29 offered a greater sensitivity and specificity with respect to expert orthodontists' perception of treatment need.
Adolescent
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Child
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China
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epidemiology
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Cross-Cultural Comparison
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Data Collection
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Dental Health Surveys
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methods
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standards
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Female
;
Health Services Needs and Demand
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statistics & numerical data
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Humans
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Male
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Malocclusion
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diagnosis
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epidemiology
;
Needs Assessment
;
statistics & numerical data
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Observer Variation
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Orthodontics, Corrective
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standards
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statistics & numerical data
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Reference Values
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Reproducibility of Results
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Sensitivity and Specificity
4.Hypnosis to Reduce Distress in Children Undergoing Anorectal Manometry: A Randomized Controlled Pilot Trial
Desiree F BAALEMAN ; Mana H VRIESMAN ; Ilan J N KOPPEN ; Kim M OSBORNE ; Marc A BENNINGA ; Miguel SAPS ; Desale YACOB ; Peter L LU ; Frederick W WOODLEY ; Carlo Di LORENZO
Journal of Neurogastroenterology and Motility 2022;28(2):312-319
Background/Aims:
To assess the effectiveness and feasibility of a brief session of hypnosis to reduce distress in children with functional constipationundergoing anorectal manometry (ARM).
Methods:
A partially-blinded randomized controlled pilot trial was conducted in children 4-18 years old scheduled for ARM. Children were randomized to receive a brief session of hypnosis prior to ARM or standard care. Non-blinded and blinded observers rated the child’s level of distress using the Observation Scale of Behavioral Distress and a 4-point-Likert scale, respectively. Differences between groupswere analyzed using Fisher’s exact test or Mann-Whitney U test as appropriate.
Results:
Data from 32 children (15 hypnosis and 17 standard care) were analyzed. Prior to insertion of the catheter, the observed mean levels of distress were lower in the hypnosis group according to both the non-blinded observer (median 0.0 [interquartile range {IQR} 0.0-0.3] vs 1.4 [IQR 0.3-2.4]; P = 0.009) and the blinded observer (median 0.0 [IQR 0.0-0.0] vs 0.5 [IQR 0.0-1.0]; P = 0.044). During ARM, observed and reported levels of distress did not differ significantly. In the hypnosis group, 92.9% of parents and childrenreported that hypnosis helped the child to relax. There were no significant differences in resting pressure, squeeze pressure, or duration of the procedure between both groups.
Conclusion
A brief session of hypnosis for children before ARM is an easily incorporable intervention that lowers distress levels prior to theprocedure and is positively perceived by children and parents.
5.Chinoketides A and B, Two New Antimicrobial Polyketides from the Endophytes of Distylium chinense with the “Black-Box” Co-culture Method
Meng Meng LV ; Ming Hui TAN ; Li Wen LU ; Rong Hua ZHANG ; Zhi Yong GUO ; Cheng Xiong LIU ; Jin YANG ; Kun ZOU ; Peter PROKSCH
Natural Product Sciences 2018;24(3):159-163
Two new polyketides, chinoketides A and B (1 – 2) with a known compound xylarphthalide A (3), were isolated from the solid medium of the endophytes from the leaves of the relic plant Distylium chinense with the “black-box” co-culture method, and the structures of two new compounds were elucidated by NMR, MS and CD spectra. And the absolute configurations of chinoketides A (1) and B (2) were determined as 2R,3R,8S and 5R,6S by calculating their ECD spectra to compare with the experimental CD spectra. Finally, the antimicrobial activities were evaluated to Erwinia carotovora sub sp. Carotovora (Jones) Bersey et al, and the results showed that compounds 1 – 3 displayed the antimicrobial activities with MIC value at 20.5, 30.4 and 10.2 µg/mL.
Coculture Techniques
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Endophytes
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Methods
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Pectobacterium carotovorum
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Plants
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Polyketides
6.Bridging the structure gap between pellets in artificial dissolution media and in gastro-intestinal tract in rats.
Hongyu SUN ; Siyu HE ; Li WU ; Zeying CAO ; Xian SUN ; Mingwei XU ; Shan LU ; Mingdi XU ; Baoming NING ; Huimin SUN ; Tiqiao XIAO ; Peter YORK ; Xu XU ; Xianzhen YIN ; Jiwen ZHANG
Acta Pharmaceutica Sinica B 2022;12(1):326-338
Changes in structure of oral solid dosage forms (OSDF) elementally determine the drug release and its therapeutic effects. In this research, synchrotron radiation X-ray micro-computed tomography was utilized to visualize the 3D structure of enteric coated pellets recovered from the gastrointestinal tract of rats. The structures of pellets in solid state and in vitro compendium media were measured. Pellets in vivo underwent morphological and structural changes which differed significantly from those in vitro compendium media. Thus, optimizations of the dissolution media were performed to mimic the appropriate in vivo conditions by introducing pepsin and glass microspheres in media. The sphericity, pellet volume, pore volume and porosity of the in vivo esomeprazole magnesium pellets in stomach for 2 h were recorded 0.47, 1.55 × 108 μm3, 0.44 × 108 μm3 and 27.6%, respectively. After adding pepsin and glass microspheres, the above parameters in vitro reached to 0.44, 1.64 × 108 μm3, 0.38 × 108 μm3 and 23.0%, respectively. Omeprazole magnesium pellets behaved similarly. The structural features of pellets between in vitro media and in vivo condition were bridged successfully in terms of 3D structures to ensure better design, characterization and quality control of advanced OSDF.
7.Not Available.
Weile YE ; Jiaojiao WANG ; Peter J LITTLE ; Jiami ZOU ; Zhihua ZHENG ; Jing LU ; Yanjun YIN ; Hao LIU ; Dongmei ZHANG ; Peiqing LIU ; Suowen XU ; Wencai YE ; Zhiping LIU
Acta Pharmaceutica Sinica B 2024;14(1):1-19
Bioactive compounds derived from herbal medicinal plants modulate various therapeutic targets and signaling pathways associated with cardiovascular diseases (CVDs), the world's primary cause of death. Ginkgo biloba, a well-known traditional Chinese medicine with notable cardiovascular actions, has been used as a cardio- and cerebrovascular therapeutic drug and nutraceutical in Asian countries for centuries. Preclinical studies have shown that ginkgolide B, a bioactive component in Ginkgo biloba, can ameliorate atherosclerosis in cultured vascular cells and disease models. Of clinical relevance, several clinical trials are ongoing or being completed to examine the efficacy and safety of ginkgolide B-related drug preparations in the prevention of cerebrovascular diseases, such as ischemia stroke. Here, we present a comprehensive review of the pharmacological activities, pharmacokinetic characteristics, and mechanisms of action of ginkgolide B in atherosclerosis prevention and therapy. We highlight new molecular targets of ginkgolide B, including nicotinamide adenine dinucleotide phosphate oxidases (NADPH oxidase), lectin-like oxidized LDL receptor-1 (LOX-1), sirtuin 1 (SIRT1), platelet-activating factor (PAF), proprotein convertase subtilisin/kexin type 9 (PCSK9) and others. Finally, we provide an overview and discussion of the therapeutic potential of ginkgolide B and highlight the future perspective of developing ginkgolide B as an effective therapeutic agent for treating atherosclerosis.