Deflazacort (DFZ, a prodrug) is well absorbed and rapidly metabolized into the active metabolite 21-hydroxydeflazacort (21-OH DFZ) after oral administration. The aim of this study is to evaluate the pharmacokinetic properties of 21-OH DFZ in healthy Chinese volunteers after a single and multiple oral administration of DFZ tablets under fed condition. Twelve volunteers (six males and six females) were administered a single dose of 6 mg or 12 mg or 24 mg of DFZ in three different periods separately, according to the 3 x 3 Latin square design. Between each administration period there was a washout period of one week. The multiple-dose study of 12 mg dose DFZ per day for 7 consecutive days was started after a 1 w washout period when the single-dose study completed. The pharmacokinetic parameters of 21-OH DFZ after the single oral administration of 6 mg, 12 mg and 24 mg DFZ tablets were as follows: (37.7 +/- 11.6), (61.5 +/- 17.7) and (123 +/- 23) ng x mL(-1) for C(max); (1.90 +/- 0.32), (1.96 +/- 0.27) and (2.13 +/- 0.34) h for t1/2; (96.6 +/- 25.9), (190 +/- 44) and (422 +/- 107) ng x h x mL(-1) for AUC(0-14 h), respectively. After the multiple dose administration, the mean plasma concentration at steady-state C(av) was (7.00 +/- 1.66) ng x mL(-1) and the degree of plasma concentration fluctuation DF was 7.7 +/- 1.2. The results showed that the pharmacokinetic characteristics of 21-OH DFZ in healthy Chinese volunteers were linear over the dose range of 6 to 24 mg. No significant gender differences were found in the pharmacokinetics of 21-OH DFZ in healthy Chinese volunteers. After the multiple dose administration of 12 mg DFZ for 7 d, no accumulation of 21-OH DFZ in healthy Chinese volunteers was observed.
Administration, Oral ; Area Under Curve ; Asian Continental Ancestry Group ; Female ; Healthy Volunteers ; Humans ; Male ; Pregnenediones ; pharmacokinetics ; Tablets

Congenital Hyperinsulinism ; diagnosis ; Humans ; Infant, Newborn ; Male

Living with internationalization, it becomes increasingly important to develop the ability of acquiring knowledge from and publishing professional articles international medical journals.However, current English teaching in colleges is predominantly by cramming method and without clear aims.As a result, students make little learning progress.Production-oriented Approach, proposed by Professor Qiufang Wen, is an important theory to reform the modern English Teaching.Based on this theory, we designed and performed the course of Medical English Writing and Literature Reading for graduate students.For the aim of literature writing, we matched the teaching content with the pertinent language ability to achieve the goal.The process of teaching was initiated with output, followed by input, then tested by another output.As a result, students′ writing was improved effectively in correctness and in awareness of the rules.In addition, their ability to comprehend difficult and long sentences was also found to be improved.We believe Production-oriented Approach conforms to the requirements of English Teaching in college and can contribute to the teaching goal.

Adult ; Aged ; Antigens, CD34 ; metabolism ; Chondrosarcoma, Mesenchymal ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Hemangiopericytoma ; metabolism ; pathology ; radiotherapy ; surgery ; Humans ; Male ; Meningeal Neoplasms ; metabolism ; pathology ; radiotherapy ; surgery ; Meningioma ; metabolism ; pathology ; Middle Aged ; Neoplasm Recurrence, Local ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Solitary Fibrous Tumors ; metabolism ; pathology ; Vimentin ; metabolism ; Young Adult

After 28 foreign species of AM fungi were inoculated in sterilized soil, the effects of the AM mycorrhizal colonization and the medicine quality of Paris polyphylla var. yunnanensis were observed by combination of inoculation test in pot at room temperature and instrumental analysis. The results showed that, compared with control group (CK), the inoculation of foreign AM fungi in the soil influenced the spore density, mycorrhizal infection rate, and colonization intensity of AM fungi in root system of P. polyphylla var. yunnanensis. The inoculation of foreign AM fungi enhanced the mycorrhiza viability of P. polyphylla var. yunnanensis by increasing the activity of succinic dehydrogenase (SDH) and alkaline phosphatase (ALP) in intraradical hyphae. The content of single steroid saponin in rhizome of P. polyphylla var. yunnanensis showed variation after P. polyphylla var. yunnanensis was inoculated by different foreign species of AM fungi, which was beneficial for increasing the medicine quality; however, the kinds of steroid saponin showed no difference. In a degree, there was a selectivity of symbiosis between P. polyphylla var. yunnanensis and foreign AM fungi. And we found that the Claroideoglomus claroideum and Racocetra coralloidea were best foreign AM fungi species for cultivating P. polyphylla var. yunnanensis under field condition.
Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; analysis ; Fungi ; classification ; growth & development ; Liliaceae ; chemistry ; growth & development ; microbiology ; Mycorrhizae ; classification ; growth & development ; Plant Roots ; chemistry ; growth & development ; microbiology ; Quality Control

Objective To study the effects of N-acetyl-seryl-aspartyl-lysyl-proline(AcSDKP) on proliferation and synthesis and secretion of extracellular matrix(ECM) in rat active hepatic stellate cells(HSCs). Methods Primary cultures of HSCs when actived were subjected to AcSDKP(0.01, 0.1, 1, 10 and 100 nmol/L, respectively) treatment, and control group was established. The expression of collagen Ⅰ(ColⅠ) and collagen Ⅲ(Col Ⅲ) mRNA were analyzed with RT-PCR. The proliferation of HSCs was detected by MTT. Hyaluronic acid (HA) and laminin(LN) in the supernatant were determined by enzyme-linked immunosorbent assay. Results Compared with control group, the proliferation of active HSCs was significantly inhibited by 1 and 10 nmol/L AcSDKP. 1, 10 nmol/L AcSDKP and 0.1 to 100 nmol/L AcSDKP significantly inhibited the expression of HSCs ColⅠ mRNA and Col Ⅲ mRNA, respectively. Expression of HA and LN in the supernatant were significantly inhibited by 0.1, 1, 10 nmol/L and 0.1, 1 nmol/L AcSDKP, respectively. ConclusionAcSDKP can inhibit synthesis and secretion of ECM in active HSCs in a dose-dependent manner, with a maximum inhibition effect at 1 nmol/L AcSDKP. The mechanism may involve the inhibition of the proliferation of HSCs,which leads to the decrease of HSCs that synthesize and secrete ECM.

Objective To identify serum biomarkers for rheumatoid arthritis(RA)by protein finger- print pattern. Methods One hundred and forty-one serum samples of 90 RA patients, 20 systemic lupus ery- thematosus(SLE)patients, and 31 healthy individuals were randomly divided into training set(n=93, 60 RA patients, 13 SLE patients and 20 healthy individuals)and test set(n=48, 30 RA patients, 7 SLE patients and 11 healthy individuals). They were detected by surface enhanced laser desorption/ionization-time of flight- mass spectrometry(SELDI-TOF-MS). The protein fingerprint pattern obtained from SELDI-TOF was trained by a multi-layer artificial neural network(ANN)to establish a diagnostic model. Results The detective mod- el obtained by ANN was used to detect the 48 unknown serum samples. The sensitivity and specificity for RA detection was 90% and 90.9% respectively. Conclusion In comparison with traditional methods, SELDI- TOF-MS could identify new serum biomarkers in RA. Combined with ANN, it provides high sensitivity and specificity for RA diagnosis.

Most chemical medicines have polymorphs. The difference of medicine polymorphs in physicochemical properties directly affects the stability, efficacy, and safety of solid medicine products. Polymorphs is incomparably important to pharmaceutical chemistry, manufacturing, and control. Meantime polymorphs is a key factor for the quality of high-end drug and formulations. Polymorph prediction technology can effectively guide screening of trial experiments, and reduce the risk of missing stable crystal form in the traditional experiment. Polymorph prediction technology was firstly based on theoretical calculations such as quantum mechanics and computational chemistry, and then was developed by the key technology of machine learning using the artificial intelligence. Nowadays, the popular trend is to combine the advantages of theoretical calculation and machine learning to jointly predict crystal structure. Recently, predicting medicine polymorphs has still been a challenging problem. It is expected to learn from and integrate existing technologies to predict medicine polymorphs more accurately and efficiently.

Objective To explore the relationship among expression of peroxisome proliferators-activated receptors γ (PPARγ) in human glioma, malignancy and outcome. Methods The level of PPARγ was detected with immunohistochemistry in the glioma from 48 cases with glioma. The progression-free survival and overall survival were compared with Kaplan-Meier survival curve between the patients with more expression of PPARγ and less ones. Results The expression of PPARγ decreased (P<0.01) with the the tumor malignancy increasing from grade I to IV, which was negatively correlated (r=-0.770, P<0.01). Both the progression-free and overall survival time were significant difference between the patients with more expression of PPARγ and less ones (P<0.01). Conclusion PPARγ expression correlates with the malignancy of human glioma, which may predict the outcome of the patients.

In this paper, the varying pattern of the amount of rhizospheric microorganisms, including bacteria, actinomycetes and fungus, was observed during the cultivation of Paris polyphylla var. yunnanensis. And the correlations between number of rhizospheric microorganisms and the quality of P. polyphylla var. yunnanensis were also studied. The results showed that the rhizospheric microorganism source of P. polyphylla var. yunnanensis was rich. The distribution of rhizospheric microorganisms (soil bacteria, fungus, actinomycetes, potassium-solubilizing bacteria, inorganic phosphorus-solubilizing bacteria, organic phosphorus-solubilizing bacteria) collected from different origin places existed significant difference (P < 0.05). The varying pattern for the amount of rhizospheric microorganisms was showed as following: the amount of bacteria > the amount of actinomycetes > the amount of fungus. The medicinal quality of P. polyphylla var. yunnanensis was influenced by their habits, and the increase of cultivation years caused the obvious decrease of the quality of P. polyphylla var. yunnanensis. Therefore, the increase of cultivation years will cause the variation of the soil micro-ecology flora, and decrease the nutrient absorption and the utilization of P. polyphylla var. yunnanensis, which will make the decrease of the medical quality of P. polyphylla var. yunnanensis.
Bacteria ; genetics ; growth & development ; isolation & purification ; Biodiversity ; China ; Fungi ; genetics ; growth & development ; isolation & purification ; Liliaceae ; chemistry ; microbiology ; Plant Extracts ; analysis ; Rhizome ; chemistry ; microbiology ; Rhizosphere ; Saponins ; analysis ; Soil Microbiology