3.Relative bioavailablity of cefaclor effervescent tabletsin human volunteers
Fu-Rong QIU ; Jin-Mei JI ; Bo CHENG ; Zhao-Hong ZENG ; Hua SUN ; Guo-Guang MAO ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2000;0(02):-
Aim To study relative bioavailablity of cefaclor effervescent tablets in healthy volunteers. Methods According to the crossover design, A volunteers were each orally given a single does of the 0.75 g cefaclor effervescent tablets and cefaclor capsules with an interval of 5 days between the two formulations.The plasma concentrations of the drug were determined by RP-HPLC.Pharmacokinetic parameters were obtained by ATPK programe,and calculated on the basis of open single compartment model.Results After a single oral dose, the peak levels in plasma averaged Cmax(31.27?5.81)?g?ml-1 and(30.56?5.25) ?g?ml-1 at (0.58?0.12)h and(0.73?0.17)h and AUC0~4(35.48?4.65) ?g?h?ml-1 and (35.89?2.90) ?g?h?ml-1 for tablet and capsule,respectively. Conclusion The result shows that two formulations are bioequivalence.
4.Clinical significance of costimulatory molecule B7-H3 expression on CD3(+) T cells in colorectal carcinoma.
Yong MAO ; Jing SUN ; Wei-peng WANG ; Xue-guang ZHANG ; Dong HUA
Chinese Medical Journal 2013;126(16):3035-3038
BACKGROUNDB7-H3 has been widely studied in the context of tumor progression in recent years, and behaves as a tumor cell marker in a variety of tumors including colorectal carcinoma. The mechanism of B7-H3 in tumor progression is complicated and not clear yet. Studies have revealed that B7 family molecules are expressed on infiltrated lymphocytes as well as tumor cells in tumor microenvironment, which indicates that different expression pattern may lead to different clinical outcomes.
METHODSThe expression of B7-H3 was detected in tissues of 98 colorectal carcinoma patients by using immunohistochemistry. Then the expression of B7-H3 on CD3(+) T lymphocytes isolated from fresh cancer tissues of 12 colorectal carcinoma patients was analyzed by flow cytometry assay. The relationship between the expression of B7-H3 on CD3(+) T lymphocytes and patients' clinical pathological parameters was demonstrated with statistical analysis.
RESULTSPatients with more CD3(+) T cell infiltration survived much longer than patients with less CD3(+) T cell infiltration (P < 0.05); B7-H3 was highly expressed by infiltrating CD3(+) T lymphocytes in colorectal carcinoma tissues. The expression of B7-H3 was found to be significantly related with lymph node metastasis status (P < 0.05), but not with the patient's gender, age, tumor size, differentiation degree, depth of tumor invasion, Dukes' stage, distant metastasis and whether or not mucinous adenocarcinoma was present (P > 0.05). Moreover, the survival time of patients with low expression of B7-H3 was obviously longer than those of high B7-H3 expression patients, but the seven-year survival rate showed no difference between the high and low B7-H3 expression patients (P > 0.05).
CONCLUSIONThe negative costimulatory molecule B7-H3 on infiltrating CD3(+) T lymphocytes in colorectal carcinoma bears importance in the clinical pathological progress and prognosis of colorectal carcinoma.
Adult ; Aged ; B7 Antigens ; analysis ; CD3 Complex ; analysis ; Colorectal Neoplasms ; immunology ; mortality ; pathology ; Female ; Flow Cytometry ; Humans ; Immunohistochemistry ; Lymphocytes, Tumor-Infiltrating ; immunology ; Male ; Middle Aged ; Survival Rate ; T-Lymphocytes ; immunology
5.A network meta-analysis of treatment for newly diagnosed glioblastoma based on radiotherapy plus temozolomide
Mao-hua Zheng ; Hong-tao Sun ; Ji-guang Xu ; Yong-hong Zhang ; Gang Yang ; Lei-ming Huo ; Jin-hui Tian ; Ke-hu Yang ; Mao-hua Zheng ; Hong-tao Sun
Neurology Asia 2017;22(1):49-58
Background & Objective: Radiotherapy and temozolomide are the standard therapy for newly diagnosed
glioblastoma multiforme (GBM). However, it is unclear whether adding another agent to the commonly
used radiotherapy-temozolomide (RT + TMZ) benefits newly diagnosed GBM patients. The present
network meta-analysis aimed to assess the efficacy of combining other agents with RT + TMZ for
GBM treatment.
Methods: A comprehensive literature search was conducted on PubMed, EMBASE.com, Web of
Science, and the Cochrane Central Register of Controlled Trials from inception to September 23, 2014,
to include all randomized controlled trials of RT + TMZ-based therapy in GBM patients. Pairwise and
network meta-analyses were performed to compare the therapeutic regimens. Results: Seventeen studies
involving 4,148 patients were identified. The results of pairwise meta-analysis indicated no significant
differences among most comparison groups, except for bevacizumab + RT + TMZ versus RT + TMZ
for progression-free survival (hazard ratio [HR] = 0.71, 95% confidence interval [CI]: 0.59–0.86; P =
0.000) and RT + TMZ versus RT alone for overall survival (HR = 0.71, 95% CI: 0.58–0.88; P = 0.001).
The results of network meta-analysis also showed no significant differences in most comparisons;
however, adverse events were more common among patients receiving additional therapeutic agents
other than RT + TMZ. The ranking probability analysis indicated that bevacizumab + RT + TMZ and
nimustine + cisplatin + RT + TMZ were associated with the best progression-free and overall survival,
but they also caused the most adverse events in GBM patients. RT + bevacizumab + irinotecan had
the highest probability of being the best regimen for minimizing adverse events.
Conclusions: The addition of other targeted agents, particularly bevacizumab and nimustine, to
RT + TMZ could be slightly effective for the treatment of newly diagnosed GBM patients; however,
adverse events remained common.
Glioblastoma
6.Expression of hypoxia inducible factor-1α and correlated target genes in human laryngeal carcinoma.
Ou XU ; Xiao-ming LI ; Mao-xin WANG ; Yong-tao QU ; Xiu-ying LU ; Chun-guang SHAN ; Qing-jia SUN
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2012;47(4):330-333
OBJECTIVETo detect the expression of hypoxia inducible factor 1 alpha (HIF-1α), glucose transporter protein-1 (GLUT-1) and vascular endothelial growth factor (VEGF) in human laryngeal carcinoma tissue, and to study the relationship between hypoxia and HIF-1α, GLUT-1, VEGF in human laryngeal carcinoma Hep-2 cells and to explore the effect of HIF-1α, GLUT-1 and VEGF as endogenous hypoxic markers on laryngeal carcinoma.
METHODSThe expression levels of HIF-1α, GLUT-1 and VEGF were detected in 35 cases of laryngeal carcinoma by SP immunohistochemical methods and in Hep-2 cells by SP immunocytochemical methods. The relationship between HIF-1α and GLUT-1, VEGF protein expression was analyzed.
RESULTSOf the 35 cases, 16 cases expressed HIF-1α, 16 cases expressed GLUT-1, 19 cases expressed VEGF. The expression of HIF-1α and VEGF were closely correlated with pathologic grading and lymphnode metastasis. GLUT-1 was correlated with lymphnode metastasis. The expression levels of HIF-1α, GLUT-1 and VEGF in Hep-2 cells under hypoxic condition were higher than those under normoxic condition.
CONCLUSIONHIF-1α may promote the expression of GLUT-1 and VEGF in laryngeal carcinoma, furthermore promote tumor angiogenesis, invasion, and metastasis of the laryngeal carcinoma.
Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Cell Line, Tumor ; Female ; Glucose Transporter Type 1 ; metabolism ; Humans ; Hypoxia-Inducible Factor 1, alpha Subunit ; metabolism ; Laryngeal Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Vascular Endothelial Growth Factor A ; metabolism
7.Evaluation of early stage diffused liver lesions with MR functional diffusion-weighted imaging--an experimental study.
Sheng GUAN ; Wei-dong ZHAO ; Kang-rong ZHOU ; Wei-jun PENG ; Feng TANG ; Jian MAO ; Guang CAO ; Fei SUN
Chinese Journal of Hepatology 2005;13(7):524-527
OBJECTIVETo investigate the value of Diffusion-Weighted Imaging (DWI) in the diagnosis of early stage liver diffuse lesions.
METHODSDiethylnitrosamine (DEN) was used to induce liver lesions in rats. Sequential DWI studies were performed on the livers from 1 to 14 weeks after DEN was administered through drinking water. Comparing studies with a blank control group was set and pathohistological examinations of the livers were performed.
RESULTSNo obvious routine MRI morphological change was found in either group during this period, but DWI demonstrated heterogeneous changes in the test group at the cirrhosis stage. There was no significant alteration of the apparent diffusion coefficient (ADC) value in the control group during this period (P > 0.05). The ADC values of the test group began to decline from the fifth week. Until the tenth week, the ADC value of the test group decreased drastically and when b = 300 s/mm2 statistic, the results showed an obvious difference between the two groups. There were also differences between the ADC values at the 10th, the 9th and the 1st weeks of the test group (P < 0.05). When b = 600 s/mm2 and 1000 s/mm2, significant differences were found after the sixth week between the two groups (P < 0.01). The main pathohistological liver change in the test group during the 1 to 4 week period after DEN was administered was swelling of hepatocytes; during the 5 to 8 week period it was fibrous tissues hyperplasia, and in the 9 to 14 week period it was cirrhotic nodule formation.
CONCLUSIONMR functional DWI could detect liver diffuse lesions earlier than conventional MR imaging. Measurement of ADC value may be of use in early diagnosis of liver diffuse diseases and for monitoring the changes of the lesions.
Animals ; Chemical and Drug Induced Liver Injury ; Diethylnitrosamine ; Diffusion Magnetic Resonance Imaging ; methods ; Liver Diseases ; diagnosis ; pathology ; Male ; Rats ; Rats, Wistar
8.Development and clinical application of the EMG information management system.
Qiang ZHANG ; Zeng CAI ; Guang-yu DENG ; Mao-yue ZHANG ; San-chun YU ; Seng-gang SUN ; Yuan-wu MEI
Chinese Journal of Medical Instrumentation 2002;26(3):192-224
This paper introduces an EMG multi-gateway analysis diagnosis and information management system. The clinical applications show that this system has higher efficiency and standard report contents, and easy statistical analysis. And it also offers EMG standard figure, normal value data, nerve and muscle select scheme etc, for reference.
Automatic Data Processing
;
Computers
;
Electromyography
;
instrumentation
;
methods
;
Equipment Design
;
Humans
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Information Storage and Retrieval
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methods
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Management Information Systems
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Medical Records Systems, Computerized
;
standards
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Software
9.Study on the extraction recovery of ginsenoside Re in plasma by different solid-phase cartridges.
Xiang-Jun MAO ; Chen-Feng ZHANG ; Di SUN ; Long-Sheng SHENG ; Guang-Ji WANG ; Wen-Ying LIU
China Journal of Chinese Materia Medica 2005;30(19):1516-1518
OBJECTIVETo optimize the solid-phase extraction method by comparison of the extraction recovery of ginsenoside Re plasma samples.
METHODAfter extracted by different solid-phase cartridges with water, acetonitrile, and different content methanol elution, the plasma samples were analyzed on an Zorbax SB-C18 column with acetonitrile-water gradient elution. From the recovery achieved, the best solid phase cartridge was found.
RESULTThis method consists of using 40% methanol as the wash solvent, and 80% methanol for the elution. Among the three kinds of solid-phase being tested, Waters Oasis HLB cartridge was found to be the best one.
CONCLUSIONThe average extraction recovery of the Waters Oasis HLB cartridges was between 103%-113%, it can be used in the analysis of ginsenoside Re in plasma samples.
Chromatography, High Pressure Liquid ; methods ; Ginsenosides ; blood ; isolation & purification ; Humans ; Panax ; chemistry ; Plants, Medicinal ; chemistry
10.A review of 11 cases of immediate free flap transfer for treating the advanced osteoradionecrosis of mandible.
Chi MAO ; Guang-yan YU ; Xin PENG ; Yong-gang SUN ; Yi ZHANG ; Chuan-bin GUO
West China Journal of Stomatology 2004;22(4):305-308
OBJECTIVETo assess the effectiveness and reliability of free flap transfer for treating the advanced osteoradionecrosis (ORN) of mandible.
METHODSEleven cases of free flap transfer for treating the advanced ORN of mandible from October 1999 to February 2003 were reviewed. Data concerning the operation included site, stage and histology of primary tumor, dosage of radiotherapy, defect description, design of free flap, recipient vessel, free flap survival and complications.
RESULTSThere were 8 males and 3 females, with age ranged 29-65 years old. Fifteen free flaps were used for reconstructing the defects, 12 were fibula flap, 2 were rectus abdominis myocutaneous flap, and 1 was radial forearm flap. All the free flaps survived completely without partial or total necrosis. The complication rate was 36.4%. All patients had complete resolution of ORN symptoms. No evidence of ORN recurrence was observed in any patient.
CONCLUSIONFree flap transfer provides a reliable and effective means for treating the advanced ORN of mandible. Free fibula flap is the workhorse flap for reconstruction of mandible.
Adult ; Aged ; Female ; Free Tissue Flaps ; Humans ; Male ; Mandible ; pathology ; Middle Aged ; Osteoradionecrosis ; surgery ; Reconstructive Surgical Procedures