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Flight medicine

Xinguang Sun, Yunfeng Zhang, Yinjun Yang, Jingjing Liu, Wei Zheng, Baiping Ma, Baolin Guo
Radix Dipsaci (RD), the dried root of Dipsacus asper, is used in traditional Chinese medicine as a remedy for bone fractures, traumatic hematoma, threatened abortion, and uterine bleeding. A novel ultra high-performance liquid chromatography coupled with quadrupole-time-of-flight tanderm mass spectrometry (UHPLC-Q-TOF/MS) approach was performed to rapidly characterize the chemical constituents of RD. Consequently, 21 compounds, including 12 iridoid glycosides (IGs), 4 furofuran lignans (FLs), and 5 phenolic acids (PAs) were discovered and identified from RD...
March 3, 2018: Journal of Pharmaceutical and Biomedical Analysis
Weiqing Qian, Yan Su, Yajie Zhang, Nianwei Yao, Nin Gu, Xu Zhang, Hong Yin
Osteoporosis is a serious public health problem and icariin (ICA) is the active component of the Epimedium sagittatum, a traditional Chinese medicinal herb. The present study aimed to investigate the effects and underlying mechanisms of ICA as a potential therapy for osteoporosis. Calvaria osteoblasts were isolated from newborn rats and treated with ICA. Cell viability, apoptosis, alkaline phosphatase activity and calcium deposition were analyzed. Bioinformatics analyses were performed to identify differentially expressed proteins (DEPs) in response to ICA treatment...
March 9, 2018: Molecular Medicine Reports
Yangyang Xu, Hao Cai, Gang Cao, Yu Duan, Ke Pei, Sicong Tu, Jia Zhou, Li Xie, Dongdong Sun, Jiayu Zhao, Jing Liu, Xiaoqi Wang, Lin Shen
Baizhu Shaoyao San (BSS) is a famous traditional Chinese medicinal formula widely used for the treatment of painful diarrhea, intestinal inflammation, and diarrhea-predominant irritable bowel syndrome. According to clinical medication, three medicinal herbs (Atractylodis Macrocephalae Rhizoma, Paeoniae Radix Alba, and Citri Reticulatae Pericarpium) included in BSS must be processed using some specific methods of stir-frying. On the basis of the classical theories of traditional Chinese medicine, the therapeutic effects of BSS would be significantly enhanced after processing...
March 3, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Ziqiang Li, Jia Liu, Deqin Zhang, Xi Du, Lifeng Han, Chunxiao Lv, Yanfen Li, Ruihua Wang, Baohe Wang, Yuhong Huang
BACKGROUND: Diabetes is a chronic disease associated with significant morbidity and mortality. Tangzhiqing tablet (TZQ), a Chinese traditional patent medicine, has been in phase 2 clinical trial for the treatment of diabetes mellitus. However, the current quality evaluation of TZQ still remains rather obscure. PURPOSE: The promising quality markers (Q-markers) of TZQ will be sought for its quality assessment and process control based on the qualitative, quantitative and dose-exposure-response analysis...
February 21, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Chunting Li, Navindra P Seeram
The red maple (Acer rubrum) species is economically important to North America because of its sap which is used to produce maple syrup. In addition, various other red maple plant parts, including leaves, were used as a traditional medicine by the Native Americans. Currently, red maple leaves are being used for nutraceutical and cosmetic applications but there are no published analytical methods for comprehensive phytochemical characterization of this material. Herein, a rapid and sensitive method using liquid chromatography with electrospray ionization time-of-flight tandem mass spectrometry was developed to characterize the phenolics in a methanol extract of red maple leaves and a proprietary phenolic-enriched red maple leaves extract (Maplifa™)...
March 7, 2018: Journal of Separation Science
Zhijun Diao, Jing Li, Qian Liu, Yutang Wang
Chicoric acid (CA) is an active derivative of caffeic acid, which is naturally present in many medicinal plants and vegetables. In the present study, the metabolic profile of CA was determined in rat plasma, urine and feces and was subsequently used to propose the metabolic pathways of CA. CA (100 mg/kg) was orally administered to rats by gastric intubation. Then, the plasma, urine and feces samples were collected and treated with methanol and acetonitrile (1:1, V/V) to precipitate the proteins. The pretreated samples were separated by ultra performance liquid chromatography (UPLC) equipped with an HSS T3 column (2...
February 13, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Won Tae Jeong, Heung Bin Lim
We developed a novel ultra performance liquid chromatography-quadrupole time-of-flight (UPLC-Q-TOF) mass spectrometry method that allows sensitive, rapid, and reliable detection and identification of six representative indole alkaloids (vincristine, vinblastine, ajmalicine, catharanthine, serpentine, and vindoline) that exhibit physiological activity in Catharanthus roseus (C. roseus). The alkaloids were eluted on a C18 column with acetonitrile and water containing 0.1% formic acid and 10 mM ammonium acetate, and separated with good resolution within 13 min...
February 17, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Tess Melinda Brodie, Vinko Tosevski
Mass cytometry (cytometry by time-of-flight, CyTOF) is a high-dimensional single-cell analytical technology that allows for highly multiplexed measurements of protein or nucleic acid abundances by bringing together the detection capacity of atomic mass spectroscopy and the sample preparation workflow typical of regular flow cytometry. In 2014 the mass cytometer was adapted for the acquisition of samples from microscopy slides (termed imaging mass cytometry), greatly increasing the applicability of this technology with the inclusion of spatial information...
2018: Methods in Molecular Biology
Jing-Zhe Wang, Yi-Fan Zhang, Feng Xu, Ming-Ying Shang, Guang-Xue Liu, Shao-Qing Cai
Harpagoside, an iridoid glycoside, is the major bioactive constituent of the traditional Chinese medicine Scrophulariae Radix. High-performance liquid chromatography with a diode array detector combined with electrospray ionization ion trap time-of-flight multistage mass spectrometry (HPLC-ESI-IT-TOF-MSn ) was used to profile and identify the metabolites of harpagoside in rats in vivo and to study the distribution of these metabolites in rats for the first time. A total of 45 metabolites were identified, 37 of which were postulated to be new compounds...
February 22, 2018: Biomedical Chromatography: BMC
Yong Yang, Hongmei Jia, Meng Yu, Chao Zhou, Lili Sun, Yang Zhao, Hongwu Zhang, Zhongmei Zou
Myocardial infarction (MI) occurs during a sustained insufficient blood supply to the heart, eventually leading to myocardial necrosis. Xin-Ke-Shu tablet (XKS) is a prescription herbal compound and a patented medicine extensively used in the clinical treatment of coronary heart disease (CHD). To understand the molecular mechanism of the XKS action against MI in detail, it is necessary to investigate the altered metabolome and related pathways coincident with clinical features. In this study, tissue-targeted metabonomics based on ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) were developed to explore the metabolic changes associated with XKS treatment in the heart tissue of rats with MI induced by a left anterior descending coronary artery ligation (LAD)...
March 15, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Elin Lindström, Anders Sundin, Carlos Trampal, Lars Lindsjö, Ezgi Ilan, Torsten Danfors, Gunnar Antoni, Jens Sörensen, Mark Lubberink
Resolution and quantitative accuracy of positron emission tomography (PET) are highly influenced by the reconstruction method. Penalized likelihood estimation algorithms allow for fully convergent iterative reconstruction, generating a higher image contrast while limiting noise compared to ordered subsets expectation maximization (OSEM). In this study, block-sequential regularized expectation maximization (BSREM) was compared to time-of-flight OSEM (TOF-OSEM). Various strengths of noise penalization factor β were tested along with scan durations and transaxial field of views (FOVs) with the aim to evaluate the performance and clinical use of BSREM for 18 F-FDG-PET-computed tomography (CT), both in quantitative terms and in a qualitative visual evaluation...
February 15, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Gang Bai, Tiejun Zhang, Yuanyuan Hou, Guoyu Ding, Min Jiang, Guoan Luo
BACKGROUND: The quality of traditional Chinese medicine (TCM) forms the foundation of its clinical efficacy. The standardization of TCM is the most important task of TCM modernization. In recent years, there has been great progress in the quality control of TCM. However, there are still many issues related to the current quality standards, and it is difficult to objectively evaluate and effectively control the quality of TCM. PURPOSE: To face these challenge, we summarized the current quality marker (Q-marker) research based on its characteristics and benefits, and proposed a reasonable and intelligentized quality evaluation strategy for the development and application of Q-markers...
January 31, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Jie Gao, Klaus Meyer, Katrin Borucki, Per Magne Ueland
Circulating proteins are widely used as biomarkers in clinical applications for the diagnosis, prediction and treatment of numerous diseases. Immunoassays are the most common technologies for quantification of protein biomarkers and exist in various formats. Traditional immunoassays offer sensitive and fast analyses, but cannot differentiate between proteoforms. Protein micro-heterogeneity, mainly due to post-translational modification, has been recognized as fingerprint for different pathologies, and knowledge about proteoforms is an important step towards personalized medicine...
February 8, 2018: Analytical Chemistry
Xiao-Ning Zhang, Jia Liu, Yang Liu, Yu Wang, Ann Abozeid, Zhi-Guo Yu, Zhong-Hua Tang
The medicinal plant Catharanthus roseus accumulates large numbers of terpenoid indole alkaloids (TIAs), including the pharmaceutically important vinblastine, vincristine, ajmalicine, and serpentine. The phytohormone ethylene or methyl jasmonate (MeJA) can markedly enhance alkaloid accumulation. The interaction between ethylene or MeJA in the regulation of TIA biosynthesis in C. roseus is unknown. Here, a metabolomics platform is reported that is based on liquid chromatography (LC) coupled with time-of-flight mass spectrometry to study candidate components for TIA biosynthesis, which is controlled by ethylene or MeJA in C...
February 6, 2018: Journal of Natural Products
Xueju Zhang, Zifeng Pi, Zhong Zheng, Zhiqiang Liu, Fengrui Song
Gardeniae Fructus is a widely used Traditional Chinese Medicines in treating various diseases. However, the absorbed components and metabolites of its main bioactive iridoid ingredients from iridoid extract of the fruits of Gardeniae Fructus in rat plasma need further study. In this study, a systematic method based on ultra-performance liquid chromatography-quadrupole-time-of-flight/mass spectrometry (UPLC-Q-TOF/MS) technique was developed to speculate the absorbed components and metabolites of iridoid extract in rat plasma after oral administration...
February 15, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Sunil Kumar, Awantika Singh, Brijesh Kumar
Phyllanthus species plants are a rich source of phenolics and widely used due to their medicinal properties. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed using high-pressure liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry (HPLC-ESI-QTOF-MS/MS) for the identification and characterization of quercetin, kaempferol, ellagic acid and their derivatives in ethanolic extracts of Phyllanthus species. The chromatographic separation was carried out on Thermo Betasil C8 column (250 mm×4...
August 2017: Journal of Pharmaceutical Analysis
Chang-Liang Yao, Hui-Qin Pan, Hui Wang, Shuai Yao, Wen-Zhi Yang, Jin-Jun Hou, Qing-Hao Jin, Wan-Ying Wu, De-An Guo
Liquid chromatography-mass spectrometry (LC-MS) guided isolation is a favored strategy to quickly and efficiently explore the chemical diversity of herbal medicines. In this study, two methods were adopted to improve the performance of the strategy, including offline two-dimensional (2D) LC to extend the peak capacities and predicted metabolites screening (PMS) to automatically screen the targets with expanded databases. Ginsenosides in the leaves of Panax notoginseng (PNL) were taken as a case. An offline 2D LC system was constructed with an orthogonality of 0...
January 26, 2018: Journal of Chromatography. A
Li-Li Sun, Meng Wang, Hui-Jie Zhang, Ya-Nan Liu, Xiao-Liang Ren, Yan-Ru Deng, Ai-Di Qi
Polygoni Multiflori Radix (PMR) is increasingly being used not just as a traditional herbal medicine but also as a popular functional food. In this study, multivariate chemometric methods and mass spectrometry were combined to analyze the ultra-high-performance liquid chromatograph (UPLC) fingerprints of PMR from six different geographical origins. A chemometric strategy based on multivariate curve resolution-alternating least squares (MCR-ALS) and three classification methods is proposed to analyze the UPLC fingerprints obtained...
January 2018: Journal of Food and Drug Analysis
Ran Wu, Shan Lin, Jinxin Wang, Saisai Tian, Xisong Ke, Yi Qu, Xinhui Tian, Xiaopo Qi, Ji Ye, Weidong Zhang
Qi-Jing-Sheng-Bai granule is an effective traditional Chinese medicine formula that has been widely used for the treatment of leukopenia post radiotherapy or chemotherapy. However, its chemical constituents were still unclear, which hindered interpreting bioactive constituents and studying integrative mechanisms. In this study, we developed a three-step strategy to characterize the chemical constituents and metabolites of Qi-Jing-Sheng-Bai by using ultra high performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry...
January 31, 2018: Journal of Separation Science
Bo Liu, Yanfang Yang, Hongbin Liu, Zhoutao Xie, Qun Li, Meng Deng, Fangping Li, Jingling Peng, Hezhen Wu
BACKGROUND: The Acanthaceae family is an important source of therapeutic drugs and ethno medicines. There are many famous medicinal plants from this family, such as Andrographis paniculata, Baphicacanthus cusia, and Dicliptera chinensis. Justicia procumbens (J. procumbens) is widely distributed in tropical and sub-tropical of the world. It has long been used in traditional Chinese medicine for cancer. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed the ethyl acetate extract of J...
January 25, 2018: Chemistry Central Journal
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