Entity

Time filter

Source Type


Yao N.,Gansu College of Traditional Chinese Medicine | Wang X.,Xian Jiaotong University
American Journal of Chinese Medicine | Year: 2014

Oxymatrine, extracted from the herb Sophora alopecuraides L., was investigated to determine its anti-HBV immunomodulatory mechanism in vitro. Human peripheral lymphocytes were isolated from heparinized whole blood from 48 chronic hepatitis B (CHB) patients. The lymphocytes from each patient were divided into two groups according to pretreatment or no pretreatment with Oxymatrine in vitro. We examined the changes of expression and function of the toll-like receptor 9 (TLR9) signal transduction pathway in the peripheral lymphocytes with different treatment methods and investigated the synergism of Oxymatrine and the TLR9 ligand on antiviral cytokine secretions in vitro. The data showed Oxymatrine could induce antiviral cytokine secretions directly from the peripheral lymphocytes. For the TLR9 signal pathway, Oxymatrine not only augmented the expressions of TLR9 signal transduction molecules, but also activated the TLR9 signal function. This study has clearly demonstrated that TLR9 ligand could stimulate peripheral lymphocytes that have been pretreated with Oxymatrine. Furthermore, the quantity of antiviral cytokines secreted by the pretreated lymphocytes was greater than that of those without pretreatment. The interaction between the Oxymatrine and the TLR9 ligand appears to be synergistic. This study suggests Oxymatrine could be a strong immunomodulator, influence TLR9 signaling transduction, and synergistically improve the immune efficacy of the TLR9 ligand against CHB. © 2014 World Scientific Publishing Company & Institute for Advanced Research in Asian Science and Medicine. Source


Zhang S.,Lanzhou Industry Research Institute | Gao S.,Gansu College of Traditional Chinese Medicine | Gao G.,Lanzhou Industry Research Institute
Applied Biochemistry and Biotechnology | Year: 2010

A study of the cross-linking of β-galactosidase on magnetic beads is reported here. The magnetic beads were prepared from artemisia seed gum, chitosan, and magnetic fluid in the presence of a cross-linking regent (i.e., glutaraldehyde). The reactive aldehyde groups of the magnetic beads allowed the reaction of the amino groups of the enzymes. The animated magnetic beads were used for the covalent immobilization of β-galactosidase. The effect of various preparation conditions on the activity of the immobilized β-galactosidase, such as immobilizing time, amount of enzyme, and the concentration of glutaraldehyde, were investigated. The influence of pH and temperature on the activity and the stability of the enzyme, both free and immobilized, have been studied. And o-nitrophenyl-β-d-galactopyranoside (ONPG) was chosen as a substrate. The β-galactosidase immobilized on the magnetic beads resulted in an increase in enzyme stability. Optimum operational temperature for immobilized enzyme was 10 °C higher than that of free enzyme and was significantly broader. © 2009 Humana Press. Source


Guo X.,Northwest Normal University | Shang D.,Gansu College of Traditional Chinese Medicine
Mathematical Problems in Engineering | Year: 2013

The approximate solution of n th-order fuzzy linear differential equations in which coefficient functions maintain the sign is investigated by the undetermined fuzzy coefficients method. The differential equations is converted to a crisp function system of linear equations according to the operations of fuzzy numbers. The fuzzy approximate solution of the fuzzy linear differential equation is obtained by solving the crisp linear equations. Some numerical examples are given to illustrate the proposed method. It is an extension of Allahviranloo's results. © 2013 Xiaobin Guo and Dequan Shang. Source


Cheng F.,Gansu College of Traditional Chinese Medicine
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials | Year: 2011

To study the active ingredients of analgesic and anti-inflammatory from Meconopsis quintuplinervia, Tracking the active ingredients of such medicines. The compounds Meconopsis quintuplinervia,were separated with chromatography and its chemical structure was elucidated by means of MS, NMR spectroscopy methods respectively. Five compounds were obtaine as O-methylflavinantine (I), flavinantin (II), tricin (III), quercitrin (IV) and methyl linoleate (V). Compounds I is obtained from the plant for the first time. Source


Wang Q.,Gansu College of Traditional Chinese Medicine | Xue Y.,San Ai Tang Hospital
Oncology Letters | Year: 2015

Renal-type clear cell carcinoma of the prostate is a rare and novel tumor that has only been identified in recent years. The present study describes a lesion in the prostate of a 64-year-old male with a two-year history of urinary frequency, urgency and difficulty, who was admitted to the San Ai Tang Hospital for benign prostatic hyperplasia, and subsequently underwent transurethral resection of the prostate. In total, 12 g of tissue was resected, which demonstrated morphological and immunohistochemical similarities to clear cell carcinoma of the kidney. Ultrasound inspection and computed tomography revealed prostate enlargement. Although no renal-enclosed mass was identified, metastatic lesions were revealed in the lungs, sternum and clavicles. In addition, right pleural thickening and a small amount of effusion in the pleural cavity were detected. Clear cell carcinoma was identified throughout the prostate, with surrounding regions of ordinary-type prostatic adenocarcinoma (Gleason score, 4+4). The urinary bladder exhibited no dysplasia or neoplasia. It was therefore concluded that the tumor represented a primary renal-type clear cell carcinoma that had arisen in the prostate. To the best of our knowledge, this type of extra-renal tumor has only been reported in three other previous studies. © 2015, Spandidos Publications. All rights reserved. Source

Discover hidden collaborations