Benzene ; poisoning ; Chronic Disease ; Female ; Humans ; Middle Aged ; Occupational Diseases

Academic Dissertations as Topic ; Diagnostic Imaging ; Humans

Adolescent ; Adult ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Child ; Cytarabine ; administration & dosage ; Daunorubicin ; administration & dosage ; adverse effects ; Female ; Humans ; Leukemia, Myeloid, Acute ; drug therapy ; Male ; Middle Aged ; Mitoxantrone ; administration & dosage ; adverse effects ; Young Adult

Objective To construct the recombinant plasmid carrying shRNA to ATX and analyze the nucle- ic acid sequence for further searching new gene therapy method of tumor.Methods Two DNA sequences containing short hairpin structure were designed and synthesized.The complement form was obtained by annealing and inserted into vector Psilcncer2.1-U6 neo,and the recombinant plasmid was transformed into DH5a strain.Finally the plasmid identified by restriction enzyme was used for sequence analysis.Results The recombinant Psileneer2.1-U6 neo car- rying shRNA to ATX had been constructed and the aim sequence had been obtained.Conclusion The construction of the recombinant plasmid carrying shRNA to ATX lays the basis for the study of its inhibitive effect on tumor.

OBJECTIVETo reveal the relation between endogenous hormones and the flower bud differentiation in Schisandga chinensis.

METHODTop buds of extremely short branch and axillary buds of long branch in the same plant of S. chinensis were used as material and the contents of endogenous hormones were measured during different periods of the flower bud differentiation with HPLC.

RESULTThe result showed that flower bud differentiation and the formation of female flower were inhibited by high concentration of GA3 and were promoted by high concentration of ABA or ZT. Low ratio of GA3/ABA has the same result.

CONCLUSIONThere was a correlation between endogenous hormones and the flower bud differentiation of S. chinensis.

Abscisic Acid ; metabolism ; Flowers ; growth & development ; Germination ; Gibberellins ; metabolism ; Plant Growth Regulators ; metabolism ; Plants, Medicinal ; growth & development ; metabolism ; Schisandra ; growth & development ; metabolism ; Zeatin ; metabolism

Syndrome and formulae (or prescription) are two key issues in traditional Chinese medicine (TCM) and the premise research for material basis of TCM. However, vagueness of syndromes and complexity of formulae greatly limited the evaluation to syndromes and effective substance basis of prescription. Therefore, how to solve the evaluation of syndromes, confirming the efficacy material basis in prescription are the current hot issues of international concern. To solve these problems, establishing chinmedomics by integrated serum pharmacochemistry of TCM with metabolomics technology, that is a unique method of TCM research, made outstanding contributions in solving international concerns such as the effectiveness and security aspects of TCM. On the basis of the biological characterization of syndrome, the metabolic profiling of animal models of TCM syndrome, and related metabolic fingerprints as well as metabolic biomarkers were established to evaluate the overall effects of TCM formulae and corresponding relationship of syndrome-formulae. The active constituents were screened using the plotting of correlation between (endogenous) marker metabolites and (exogenous) serum constituents (PCMS), and is ongoing verification by further biological experiments. Correlation analysis between the ingredients in the body after oral formulae and endogenous markers in vivo can be used to clarify the active ingredients and synergistic properties. This method was successfully applied for rapid discovery of potentially bioactive components and metabolites from TCM, and through a series of studies on the chinmedomics, it proved that the established method could help to explore the effective substance for further research of TCM. As a new research approach, Chinmedomics is the best method to fit the holistic concept of TCM, and it can not only interpret the essence of syndrome but also elucidate the scientific connotation of Chinese medical formulae.
Animals ; Diagnosis, Differential ; Drug Prescriptions ; Drug Therapy ; Drugs, Chinese Herbal ; analysis ; pharmacokinetics ; Humans ; Medicine, Chinese Traditional

· AIM: To search an easy and simple way for intraocular implantation after the eye evisceration.· METHODS: Fifteen healthy New Zealand rabbits were divided into 5 groups according to the sacrifice time, and each group included 3 rabbits; the left eye received the injection of polymethyl methacrylate (PMMA) bone cement (2g per mL), while the right eye served as control. Under general anesthetia, a 3mm incision was made on the sclera,and the eye contents and pigment tissues were extruded out with fingers. Then, PMMA bone cement (2g per ml) was injected through the scleral incision. Both the operated eye and control eye of the rabbits were enucleated and weighed,The reaction of the operated eye (macroscopically and histopathologically) was noted at frequent interval. The obtained data were then analyzed with ANOVA (SPSS11.5).· RESULTS: There was swelling of eyelids and conjunctiva at the early time after the injection, but no significant difference between the weight of the left and right eyes was noted,Histopathologic examination showed scleral and other tissues necrosis at early period, and then the tissues reaction turned into a great deal of cell proliferation and finally into extensive fibro-connective tissues. Three months after the operation,neovascularization was observed in the cornea of the operated eyes. Histopathologic examination showed formation of fibro-membrane around the intraocular implant,and disappearance of the inflammation.· CONCLUSION: The method of injecting PMMA bone cement (2g per ml) to form an intraocular implant is quite simple and economical; this method is also easy to use clinically.

Aim To study the effect of estrogen on the migration of breast cancer cells and the possible underlying mechanisms.Methods Human breast cancer cell lines MCF-7(estrogen receptor, ER+) and MDA-MB-468(ER-) were employed as a model system.Cells were treated with E2 and pretreated with CANP inhibitor(calpeptin)where needed.Wound-healing assay was applied to evaluate cell migration, Western blot assay was performed to observe protein level, and fibronectin expression was silenced by specific siRNA transfection.Results ① Treatmentof MCF-7 and MDA-MB-468 cellswith E2(50 nmol·L-1) increased cell migration by(51.55±5.50) ％(P<0.01)and (40.78±4.78)％(P<0.05), respectively;② E2 significantly up-regulated the expression of FN protein in MCF-7 and MDA-MB-468 breast cancer cells, which was 2.11 times(P<0.05)and 1.86 times(P<0.01), respectively;③ Pretreatment with calpeptin(10 μmol·L-1) decreased E2-induced cell migration by (49.55±6.44)％(P<0.05) in MCF-7 and(36.85±4.40)％ (P<0.01)in MDA-MB-468 cells;④ Calpeptin pretreatment inhibited E2-induced fibronectin up-regulation by(80.12±4.55)％ and(78.84±5.70) ％(P<0.01), respectively;⑤ Knockdown of FN with siRNA suppressed cell E2-induced migration by(40.65±5.80)％(P<0.01)in MCF-7 and(40.88±6.02)％(P<0.05)in MDA-MB-468 cells.Conclusion E2 stimulates the migration of breast cancer cells with or without ER expression and a calpain-FN signaling pathway may be involved in the E2 action.

Objective To investigate the effects of morroniside on activation of caspase-3 in rats with focal cerebral ischemia/reperfusion. MethodsThe model was induced with occlusion of middle cerebral artery with suture embolus, ischemia for 30 min, and reperfusion for 72 h in rats. Vitamin E used for the positive control. The activity of caspase-3 was detected with spectrophotometry. ResultsCompared with sham group, the caspase-3 activity increased obviously in model rat. Compared with model group, Morroniside (30 mg/kg,90 mg/kg,270 mg/kg) decreased the activation of caspase-3 remarkably, which was dose-dependent (P<0.05). ConclusionMorroniside may reduce apoptosis by decreasing the activation of caspase-3 in rats.

ObjectiveTo investigate the effects of morroniside on IL-1β in rat cortex with focal cerebral ischemia/reperfusion.MethodsThe animal model was induced by occlusion of middle cerebral artery with suture embolus, ischemia for 30 min, and reperfusion for 72 h in rats. The content of IL-1β was detected with enzyme linked immunosorbent assay(ELISA).ResultsCompared with sham group, the content of IL-1β increased obviously in model rat. Compared with model group, morroniside(30 mg/kg, 90 mg/kg, 270 mg/kg) and colchicine (0.06 mg/kg) decreased the content of IL-1β significantly (P<0.001).ConclusionMorroniside may protect the cortex from inflammatory factor IL-1β.