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https://www.readbyqxmd.com/read/28927936/rapid-quantitative-detection-of-glucose-content-in-glucose-injection-by-reaction-headspace-gas-chromatography
#1
Wei-Qi Xie, Yi-Xian Gong, Kong-Xian Yu
This work investigates an automated technique for rapid detecting the glucose content in glucose injection by reaction headspace gas chromatography (HS-GC). This method is based on the oxidation reaction of glucose in glucose injection with potassium dichromate. The carbon dioxide (CO2) formed from the oxidation reaction can be quantitatively detected by GC. The results show that the relative standard deviation (RSD) of the present method was within 2.91%, and the measured glucose contents in glucose injection closely match those quantified by the reference method (relative differences <6...
September 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28915274/prevalence-of-mind-and-body-exercises-mbe-in-relation-to-demographics-self-rated-health-and-purchases-of-prescribed-psychotropic-drugs-and-analgesics
#2
Lina Rådmark, Linda L Magnusson Hanson, Eva Bojner Horwitz, Walter Osika
This study aims to identify any differences regarding gender, age, socioeconomic status (SES), self-rated health, perceived stress and the purchase of prescribed drugs among people who practice mind and body exercises (MBE) extensively compared to people who do not. METHODS: The study includes 3,913 men and 4,803 women aged 20-72 who participated in the Swedish Longitudinal Occupational Survey of Health (SLOSH). The respondents were divided into three groups depending on frequency of MBE practice (never/seldom/often)...
2017: PloS One
https://www.readbyqxmd.com/read/28880235/risk-assessment-of-metals-in-urban-soils-from-a-typical-industrial-city-suzhou-eastern-china
#3
Gang Wang, Hou-Qi Liu, Yu Gong, Yang Wei, Ai-Jun Miao, Liu-Yan Yang, Huan Zhong
Risk of metals in urban soils is less studied, compared to that in other types of soils, hindering accurate assessment of human exposure to metals. In this study, the concentrations of five metals (As, Cd, Cr, Pb, and Hg) were analyzed in 167 surface soil samples collected from Suzhou city and their potential ecological and human health risks were assessed. The mean concentrations of As, Cd, Pb, and Hg except Cr, were higher than the background values in Jiangsu Province. Metal concentrations varied among districts, where sites of high contamination showed a punctate distribution...
September 7, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28691150/quantitative-analysis-of-total-starch-content-in-wheat-flour-by-reaction-headspace-gas-chromatography
#4
Wei-Qi Xie, Yi-Xian Gong, Kong-Xian Yu
This paper proposed a new reaction headspace gas chromatographic (HS-GC) method for efficiently quantifying the total starch content in wheat flours. A certain weight of wheat flour was oxidized by potassium dichromate in an acidic condition in a sealed headspace vial. The results show that the starch in wheat flour can be completely transferred to carbon dioxide at the given conditions (at 100 °C for 40 min) and the total starch content in wheat flour sample can be indirectly quantified by detecting the CO2 formed from the oxidation reaction...
July 10, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28684007/efficient-determination-of-average-valence-of-manganese-in-manganese-oxides-by-reaction-headspace-gas-chromatography
#5
Wei-Qi Xie, Yi-Xian Gong, Kong-Xian Yu
This work investigates a new reaction headspace gas chromatographic (HS-GC) technique for efficient quantifying average valence of manganese (Mn) in manganese oxides. This method is on the basis of the oxidation reaction between manganese oxides and sodium oxalate under the acidic condition. The carbon dioxide (CO2) formed from the oxidation reaction can be quantitatively analyzed by headspace gas chromatography. The data showed that the reaction in the closed headspace vial can be completed in 20min at 80°C...
June 23, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28639260/improving-thermostability-of-r-selective-amine-transaminase-from-aspergillus-terreus-through-introduction-of-disulfide-bonds
#6
Dong-Fang Xie, Hui Fang, Jia-Qi Mei, Jin-Yan Gong, Hong-Peng Wang, Xiu-Ying Shen, Jun Huang, Le-He Mei
To improve the thermostability of (R)-selective amine transaminase from Aspergillus terreus (AT-ATA), we used computer software Disulfide by Design and Modelling of Disulfide Bonds in Proteins to identify mutation sites where the disulfide bonds were most likely to form. We obtained three stabilized mutants (N25C-A28C, R131C-D134C, M150C-M280C) from seven candidates by site-directed mutagenesis. Compared to the wild type, the best two mutants N25C-A28C and M150C-M280C showed improved thermal stability with a 3...
June 21, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28626434/the-effect-of-diaphragmatic-breathing-on-attention-negative-affect-and-stress-in-healthy-adults
#7
Xiao Ma, Zi-Qi Yue, Zhu-Qing Gong, Hong Zhang, Nai-Yue Duan, Yu-Tong Shi, Gao-Xia Wei, You-Fa Li
A growing number of empirical studies have revealed that diaphragmatic breathing may trigger body relaxation responses and benefit both physical and mental health. However, the specific benefits of diaphragmatic breathing on mental health remain largely unknown. The present study aimed to investigate the effect of diaphragmatic breathing on cognition, affect, and cortisol responses to stress. Forty participants were randomly assigned to either a breathing intervention group (BIG) or a control group (CG). The BIG received intensive training for 20 sessions, implemented over 8 weeks, employing a real-time feedback device, and an average respiratory rate of 4 breaths/min, while the CG did not receive this treatment...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28493227/-complementary-and-alternative-procedures-for-fibromyalgia-syndrome-updated-guidelines-2017-and-overview-of-systematic-review-articles
#8
J Langhorst, P Heldmann, P Henningsen, K Kopke, L Krumbein, H Lucius, A Winkelmann, B Wolf, W Häuser
BACKGROUND: The regular update of the guidelines on fibromyalgia syndrome, AWMF number 145/004, was scheduled for April 2017. METHODS: The guidelines were developed by 13 scientific societies and 2 patient self-help organizations coordinated by the German Pain Society. Working groups (n =8) with a total of 42 members were formed balanced with respect to gender, medical expertise, position in the medical or scientific hierarchy and potential conflicts of interest...
June 2017: Der Schmerz
https://www.readbyqxmd.com/read/28470779/quantification-of-anhydride-groups-in-anhydride-based-epoxy-hardeners-by-reaction-headspace-gas-chromatography
#9
Wei-Qi Xie, Yi-Xian Gong, Kong-Xian Yu
We demonstrate a reaction headspace gas chromatographic method for quantifying anhydride groups in anhydride-based epoxy hardeners. In this method, the conversion process of anhydride groups can be realized by two steps. In the first step, anhydride groups in anhydride-based epoxy hardeners completely reacted with water to form carboxyl groups. In the second step, the carboxyl groups reacted with sodium bicarbonate solution in a closed sample vial. After the complete reaction between the carboxyl groups and sodium bicarbonate, the CO2 formed from this reaction was then measured by headspace gas chromatography...
May 4, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28186925/a-critical-appraisal-of-the-methodology-and-quality-of-evidence-of-systematic-reviews-and-meta-analyses-of-traditional-chinese-medical-nursing-interventions-a-systematic-review-of-reviews
#10
Ying-Hui Jin, Guo-Hao Wang, Yi-Rong Sun, Qi Li, Chen Zhao, Ge Li, Jin-Hua Si, Yan Li, Cui Lu, Hong-Cai Shang
OBJECTIVE: To assess the methodology and quality of evidence of systematic reviews and meta-analyses of traditional Chinese medical nursing (TCMN) interventions in Chinese journals. These interventions include acupressure, massage, Tai Chi, Qi Gong, electroacupuncture and use of Chinese herbal medicines-for example, in enemas, foot massage and compressing the umbilicus. DESIGN: A systematic literature search for systematic reviews and meta-analyses of TCMN interventions was performed...
November 14, 2016: BMJ Open
https://www.readbyqxmd.com/read/28181684/exercise-based-cardiac-rehabilitation-for-adults-with-atrial-fibrillation
#11
REVIEW
Signe S Risom, Ann-Dorthe Zwisler, Pernille P Johansen, Kirstine L Sibilitz, Jane Lindschou, Christian Gluud, Rod S Taylor, Jesper H Svendsen, Selina K Berg
BACKGROUND: Exercise-based cardiac rehabilitation may benefit adults with atrial fibrillation or those who had been treated for atrial fibrillation. Atrial fibrillation is caused by multiple micro re-entry circuits within the atrial tissue, which result in chaotic rapid activity in the atria. OBJECTIVES: To assess the benefits and harms of exercise-based rehabilitation programmes, alone or with another intervention, compared with no-exercise training controls in adults who currently have AF, or have been treated for AF...
February 9, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28178165/ablation-of-idiopathic-ventricular-arrhythmia-using-zero-fluoroscopy-approach-with-equivalent-efficacy-and-less-fatigue-a-multicenter-comparative-study
#12
MULTICENTER STUDY
Yan Wang, Guang Zhi Chen, Yan Yao, Yang Bai, Hui Min Chu, Ke Zhong Ma, Reginald Liew, Hao Liu, Guo Qiang Zhong, Yu Mei Xue, Shu Lin Wu, Yi Fu Li, Chun Xia Zhao, Qi Gong Liu, Li Lin, Lin Wang, Dao Wen Wang
The efficacy of a completely zero-fluoroscopy (ZF) approach for the catheter ablation of idiopathic ventricular arrhythmias (VAs) and whether it has advantages over the conventional fluoroscopy (F) approach are still unknown. The aim of this study was to compare the safety and efficacy of a completely ZF approach with those of the conventional F approach in the ablation of idiopathic VAs.We conducted a prospective study involving 7 centers in China. Consecutive patients (n = 489, mean age 45.3 ± 15...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28100321/-application-of-esmolol-in-severe-hand-foot-and-mouth-disease
#13
RANDOMIZED CONTROLLED TRIAL
Lei Zhu, Bo-Xiang Qi, Dai-Hua Fang, Gong-Jian Qi, Kun Gao, Bao-Li Hu
OBJECTIVE: To study the clinical effect and mechanism of action of esmolol in the treatment of severe hand, foot, and mouth disease (HFMD). METHODS: A prospective randomized controlled trial was performed. A total of 102 children with severe HFMD were enrolled in the study and were randomly divided into conventional treatment and esmolol treatment groups (n=51 each). The children in the conventional treatment group were given conventional treatment according to the guidelines for the diagnosis and treatment of HFMD...
January 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/27975327/levels-and-distributions-of-organochlorine-pesticides-in-the-soil-groundwater-system-of-vegetable-planting-area-in-tianjin-city-northern-china
#14
Hong-Wei Pan, Hong-Jun Lei, Xiao-Song He, Bei-Dou Xi, Yu-Ping Han, Qi-Gong Xu
To study the influence of long-term pesticide application on the distribution of organochlorine pesticides (OCPs) in the soil-groundwater system, 19 soil samples and 19 groundwater samples were collected from agricultural area with long-term pesticide application history in Northern China. Results showed that the composition of OCPs changed significantly from soil to groundwater. For example, ∑DDT, ∑HCH, and ∑heptachlor had high levels in the soil and low levels in the groundwater; in contrast, endrin had low level in the soil and high level in the groundwater...
April 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/27814849/multimodal-compared-to-pharmacologic-treatments-for-chronic-tension-type-headache-in-adolescents
#15
Peter Przekop, Allison Przekop, Mark G Haviland
Chronic tension-type headache (CTTH) in children and adolescents is a serious medical condition, with considerable morbidity and few effective, evidence-based treatments. We performed a chart review of 83 adolescents (age range = 13-18 years; 67 girls and 16 boys) diagnosed with CTTH. Two treatment protocols were compared: multimodal (osteopathic manipulative treatments, mindfulness, and qi gong) and pharmacologic (amitriptyline or gabapentin). Four outcomes (headache frequency, pain intensity, general health, and health interference) were assessed at three time points (baseline, 3 months, and 6 months)...
October 2016: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/27814417/novel-de-novo-heterozygous-frameshift-mutation-of-the-adar1-gene-in-heavy-dyschromatosis-symmetrica-hereditaria
#16
LETTER
Cheng-Rang Li, Hui Li, Rui-Xing Yu, Zhi-Liang Li, Qi Li, Juan-Qin Gong
No abstract text is available yet for this article.
September 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27688180/design-and-discovery-of-4-anilinoquinazoline-urea-derivatives-as-dual-tk-inhibitors-of-egfr-and-vegfr-2
#17
Hai-Qi Zhang, Fei-Hu Gong, Ji-Qing Ye, Chi Zhang, Xiao-Hong Yue, Chuan-Gui Li, Yun-Gen Xu, Li-Ping Sun
EGFR and VEGFR-2 are involved in pathological disorders and the progression of different kinds of tumors, the combined blockade of EGFR and VEGFR signaling pathways appears to be an attractive approach to cancer therapy. In this work, a series of 4-anilinoquinazoline derivatives containing substituted diaryl urea or glycine methyl ester moiety were designed and identified as EGFR and VEGFR-2 dual inhibitors. Compounds 19i, 19j and 19l exhibited the most potent inhibitory activities against EGFR (IC50 = 1 nM, 78 nM and 51 nM, respectively) and VEGFR-2 (IC50 = 79 nM, 14 nM and 14 nM, respectively), they showed good antiproliferative activities as well...
January 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27646279/mind-body-interventions-for-irritable-bowel-syndrome-patients-in-the-chinese-population-a-systematic-review-and-meta-analysis
#18
Weidong Wang, Fang Wang, Feng Fan, Ana Cristina Sedas, Jian Wang
PURPOSE: The aim of this study is to identify and assess evidence related to the efficacy of mind-body interventions on irritable bowel syndrome (IBS) in the Chinese population. METHOD: Drawn from Chinese databases, nine RCTs and three Q-E studies were included in the systematic review. The methodological quality of RCTs was evaluated based on the following criteria: adequate sequence generation, allocation concealment, blinding, completeness of outcome data, selective reporting, and other potential biases...
September 19, 2016: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/27583423/complementary-integrative-therapies-that-work-a-review-of-the-evidence
#19
REVIEW
Benjamin Kligler, Raymond Teets, Melissa Quick
Significant evidence supports the effectiveness and safety of several complementary or integrative treatment approaches to common primary care problems. Acupuncture is effective in the management of chronic low back pain. Mind-body interventions such as cognitive behavior therapy, yoga, tai chi, qi gong, and music therapy may be helpful for treating insomnia. Exercise can reduce anxiety symptoms. Herbal preparations and nutritional supplements can be useful as first-line therapy for certain conditions, such as fish oil for hypertriglyceridemia, St...
September 1, 2016: American Family Physician
https://www.readbyqxmd.com/read/27011063/regulation-of-multi-drug-resistance-in-hepatocellular-carcinoma-cells-is-trpc6-calcium-dependent
#20
Liang Wen, Chao Liang, Enjiang Chen, Wei Chen, Feng Liang, Xiao Zhi, Tao Wei, Fei Xue, Guogang Li, Qi Yang, Weihua Gong, Xinhua Feng, Xueli Bai, Tingbo Liang
Hepatocellular carcinoma (HCC) is notoriously refractory to chemotherapy because of its tendency to develop multi-drug resistance (MDR), whose various underlying mechanisms make it difficult to target. The calcium signalling pathway is associated with many cellular biological activities, and is also a critical player in cancer. However, its role in modulating tumour MDR remains unclear. In this study, stimulation by doxorubicin, hypoxia and ionizing radiation was used to induce MDR in HCC cells. A sustained aggregation of intracellular calcium was observed upon these stimuli, while inhibition of calcium signalling enhanced the cells' sensitivity to various drugs by attenuating epithelial-mesenchymal transition (EMT), Hif1-α signalling and DNA damage repair...
March 24, 2016: Scientific Reports
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