The study is to report the establishment of a method of screening the antitumor compounds based on the dynamic bio-response profile of cells to make up for the shortages of conventional end-point tests such as tedious operation and low sensitivity. Based on the principle of electric impedance of cells, the real-time cell electronic sensing (RT-CES) system was used to monitor the effect of epirubicin (EPI), cisplatinum (DDP) and carboplatin (CBP) on the growth of HepG2 cells, with the cell index (CI), half maximal inhibitory concentration (IC50) and detachment curve as evaluation indexes. Meanwhile, cell counting kit-8 (CCK-8) and microscopy were applied for verification. The results showed that CI curve could sensitively real-time profile the inhibitory effect of model drugs on HepG2 cells. The IC50 of EPI, DDP and CBP were 0.53 +/- 0.04, 9.79 +/- 0.26 and 597.00 +/- 3.79 microg x mL(-1), respectively. What's more, the significant differences of detachment curves of the three drugs indicated that their functional mechanisms might be different, this is consistent with the literature. The RT-CES system with non-invasive, label-free and real-time characteristics could be used to monitor the bio-response profile of the three drugs to HepG2 cells, allowing to qualitatively and quantitatively distinguish the antitumor activities of the three drugs, and could be a complementary method for the present screening of antitumor compounds.
Antineoplastic Agents ; pharmacology ; Biosensing Techniques ; methods ; Cell Count ; Cell Line, Tumor ; Cisplatin ; pharmacology ; Drug Screening Assays, Antitumor ; Electric Impedance ; Humans

This study aims at trying to establish a novel method of sterility test for injections based on biothermodynamics, in order to overcome the deficiencies of routine sterility tests such as long detecting cycle, low sensitivity and prone to misjudgments. A biothermodynamics method was adopted to rapidly detect the microorganism contamination of injections by monitoring the heat metabolism during the growth of microbe. The growth rate equal to or greater than zero and the heat power difference of P(i) and P(0) with three folds higher than the noise of baseline were chosen as indexes to study the heat change rule of microbe. In this way, the effectiveness of the new method to detect strains required by conventional sterility test or in injection samples was also investigated. Results showed that the Gram-positive bacteria, Gram-negative bacteria and fungi demanded by sterility testing methodology could be detected by biothermodynamics method within 10 hours, with the sensitivity lower than 100 CFU x mL(-1). Meanwhile, this method was successfully applied to the sterility test of Compound Yinchen injection (FFYC), Shuanghuanglian powder injection (SHL) and Compound Triamcinolone injection (TAND) which were sterilized with different degrees. Therefore, the biothermodynamics method, with advantages of fast detection and high sensitivity, could be a complementary solution for conventional sterility tests.
Anti-Inflammatory Agents ; administration & dosage ; chemistry ; Drug Contamination ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; Fungi ; isolation & purification ; Gram-Negative Bacteria ; isolation & purification ; Gram-Positive Bacteria ; isolation & purification ; Hot Temperature ; Injections ; Microbiological Techniques ; methods ; Sensitivity and Specificity ; Sterilization ; Triamcinolone ; administration & dosage ; chemistry

In vitro neuraminidase inhibition assays and ultrafiltration liquid chromatography with diodearray detector coupled to time of flight mass spectrometer (UPLC-DAD-TOF-MS) were combined to screen bioactive compounds inhibiting neuraminidase from Isatidis Radix. By comparing the compounds from Isatidis Radix before and after ultrafiltration, we found that arginine, goitrin and adenosinea can bind with neuraminidase, and the binding degree of the three compounds were (36.23 +/- 1.12)%, (32.54 +/- 1.02)% and (9.38 +/- 0.47)%, respectively. The IC50 of arginine and goitrin were (1.16 +/- 0.02), (1.20 +/- 0.02) g x L(-1), respectively. While the IC50 of adenosinea was higher than 500 g x L(-1). The results showed that arginine and goitrin might be the main compounds with antiviral activity of Isatidis Radix. This study may provide a useful method for the screening of bioactive compounds and quality control of Isatidis Radix.
Antiviral Agents ; analysis ; pharmacology ; Arginine ; analysis ; pharmacology ; Drug Evaluation, Preclinical ; Drugs, Chinese Herbal ; analysis ; pharmacology ; Isatis ; chemistry ; Mass Spectrometry ; Neuraminidase ; antagonists & inhibitors ; metabolism ; Orthomyxoviridae ; drug effects ; enzymology ; Oxazolidinones ; analysis ; pharmacology ; Plant Roots ; chemistry ; Ultrafiltration ; Viral Proteins ; antagonists & inhibitors ; metabolism

OBJECTIVETo investigate the diagnosis and treatment of serious pediatric airway obstruction.

METHODSSeventy three pediatric cases with serious airway obstruction, admitted to Shantou hospital from 1995 to 2005, were analyzed retrospectively.

RESULTSAmong the 73 cases, 28 cases (38.4%) with inflammatory disease and 33 cases (45.2%) with foreign body. In addition, 8 cases of laryngeal papilloma, 3 cases of laryngotracheobronchial spasm and 1 case of pharyngeal dysembryoma were also included in this study. The patients who had endotracheal intubation or tracheotomy were 39 cases (53.4%) and 27 cases (36.9%) respectively. Ten cases received non-surgery treatment. Seventy two cases diagnosis was confirmed and the related serious airway obstruction condition got stable within 12 hours. While serious complications occurred in 23 cases (31.5%) and operative complications occurred in 3 cases (4.1%). Four cases ( 5.5%) died and 68 cases (93.2%) were cured. One case refused to be treated.

CONCLUSIONSThe condition of serious pediatric airway obstruction patients is usually critical, the related causes could be complicated, quick diagnosis and timely removal of the obstruction factors are imperative.

Adolescent ; Airway Obstruction ; diagnosis ; therapy ; Child ; Child, Preschool ; Critical Illness ; Female ; Humans ; Infant ; Male ; Retrospective Studies ; Treatment Outcome

OBJECTIVETo investigate the operative effect and value of window partial laryngectomy for the treatment of stage T2-3 glottic laryngeal carcinoma.

METHODSFrom Oct. 2000 to Dec. 2006, the stage T2-3 glottic laryngeal carcinoma of 48 patients by properly selected were performed with window partial laryngectomy and laryngeal reconstruction. Twenty nine males and 19 females were included. Their ages ranged from 43 to 78 years (median 57.0 years). Before operation and in the 6 months after operation, these targets including auditory mental evaluation of hoarse degree, active degree and symmetry of vocal cord, glottic width in the time of quiet breathing, glottic closing degree in the time of phonating, respiratory function and swallowing function were surveyed. In addition, the things of recurrence and metastasis of tumors together with survival time of patients were following investigated.

RESULTSAll patients were decannulated successfully and incisions were healed smoothly. No operative complication occurred. Except active degree of vocal cord (P = 0.343), there were respectively significant difference between two group targets of auditory mental evaluation of hoarse degree (all P <0.01), symmetry of vocal cord (P = 0.000), glottic width in the time of quiet breathing (P = 0. 001), glottic closing degree in the time of phonating (P = 0.001) and respiratory function (P=0.001) those were investigated before operation and after operation. The swallowing function wasn't influenced (P= 0.310). There were laryngostenosis in 1 case, recurrence in 1 case (2.1%), cervical lymph node metastasis in 1 case and hepatic metastasis in 1 case. Two cases died. 3-year and 5-year overall survival rate were respectively 96.9% and 88.9%.

CONCLUSIONSThe study showed that window partial laryngectomy was successful for treating stage T2-3 glottic laryngeal carcinoma by properly selected. This operation was effective for reducing surgical invasion and beneficial to resume respiratory and vocal function.

Adult ; Aged ; Female ; Humans ; Laryngeal Cartilages ; surgery ; Laryngeal Neoplasms ; surgery ; Laryngectomy ; methods ; Male ; Middle Aged ; Treatment Outcome ; Vocal Cords

Objective To study the effect and mechanism of the dysfunction of CD4

AIM: To investigate the cytotoxic effects of the six protoberberine alkaloids (PAs) from Rhizoma Coptidis on HepG2 cells. METHOD: A systematic screening was conducted to investigate the dynamic response of HepG2 cells to the PAs using the impedance-based xCELLigence system. Cisplatin was selected as the positive control. The real time, concentration-response curves and the 50% inhibitory concentrations (IC50) were acquired to evaluate the anticancer activity of the PAs. RESULTS: All of the six PAs inhibited cell growth and induce death in HepG2 cells in a time- and concentration-dependent manner. The IC50 values of cisplatin, berberine, columbamine, coptisine, epiberberine, jatrorrhizine, and palmatine were 5.13, 42.33, 226.54, 36.90, 302.72, 383.54, and 456.96 μg·mL(-1), respectively. The results obtained using the xCELLigence system corresponded well with those of the conventional methods. CONCLUSION The xCELLigence system is a reliable and efficient tool for real-time screening of the cytotoxic effect of compounds in cell-based in vitro assays. Coptisine and berberine, with methylenedioxy group at C2 and C3 on the phenyl ring showed stronger effect.than the other four PAs. However, compared with cisplatin, the six PAs didn't show obvious cytotoxic effect on HepG2 cells. These results provided some useful data for the evaluation of the anticancer compounds, and the clinical application of traditional Chinese medicine.
Antineoplastic Agents, Phytogenic ; pharmacology ; therapeutic use ; Berberine ; analogs & derivatives ; pharmacology ; therapeutic use ; Berberine Alkaloids ; pharmacology ; therapeutic use ; Cell Death ; drug effects ; Cisplatin ; pharmacology ; therapeutic use ; Coptis ; chemistry ; Drug Evaluation, Preclinical ; methods ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Electric Impedance ; Hep G2 Cells ; Hepatoblastoma ; drug therapy ; physiopathology ; Humans ; Inhibitory Concentration 50 ; Liver Neoplasms ; drug therapy ; physiopathology ; Phytotherapy ; Rhizome ; chemistry