Aging ; psychology ; Animals ; Drugs, Chinese Herbal ; pharmacology ; Learning ; drug effects ; Male ; Memory ; drug effects ; Rats ; Rats, Wistar

AIM: The current study was designed to construct eukaryotic expression vector containing NK4 gene and transfect it into human pancreatic cancer cell lines.METHODS: The recombinant of pcDNA3/hNK4 was digested by restriction enzyme, the NK4 gene was cloned into a high effective eukaryotic expressing plasmid which contains CMV2 immediate early gene promoter and then transiently introduced into the pancreatic cancer cell line SW1990 by lipofectamine and clonal cell lines that secrete high levels of NK4 protein were isolated.The expression of NK4 was observed by RT-PCR and Western blot, in vitro the vascular endothelial cell proliferation inhibiting activity of NK4 was examined by 3-[4,5-dimethylthiazolzyl]-2,5-diphenyl tetrazolium bromide(MTT) method. RESULTS: A specific expression of NK4 gene mRNA by lipofectamine-mediated transfer exhibited only in SW1990/NK4 cells,Western blot analysis demonstrated that there was positive expression of NK4 protein(50 kD).The NK4 inhibited proliferation of the vascular endothelial cells in vitro. CONCLUSION: The recombinant of pRC/CMV2-hNK4 is a high effective expressing eukaryotic vector.The bio-engineering product of the NK4 is an angiogenesis inhibitor and may play an important role in the gene therapy for tumor.

OBJECTIVE:To study the effect of Typhae pollen decoction on isolated uterine smooth muscle(USM)contraction of rats at postconceptual stage. METHODS:16 Wistar rats at postconceptual stage were selected and USM strips were isolated. T. pollen decoction 0(blank control),2,4,8 and 12 mg(medicinal material)/ml were added respectively;the effects of T. pollen de-coction on USM strips contraction were observed,and mean tension,duration of contraction and frequency were measured and re-corded. The effects of T. pollen decoction on USM strips contraction were investigated after pretreatment of prostaglandin synthase inhibitor indometacin(1×10-7 mol/ml)and calcium channel blocker verapamil(1×10-7 mol/ml);USM tension,duration of contrac-tion and frequency were measured and recorded. RESULTS:Compared with blank control group,T. pollen decoction 4,8 and 12 mg(medicinal material)/ml could increase USM tension,duration of contraction and frequency(P<0.05);after added verapamil and indometacin,T. pollen decoction decreased USM tension,shortened duration of contraction and decreased frequency (P<0.05). CONCLUSIONS:T. pollen decoction can strengthen USM strips contraction,and the effect is inhibited by prostaglandin syn-thase inhibitor and calcium channel blocker.

Objective To evaluate the payment effect of hospitalization expense under the urban employee basic medical insurance in Guangzhou.Methods Analyze the differences between the expenses paid by medical insurance with actual hospitalization expenses of the 22 settlement units from 1 5 tertiary hospitals,and the expense settlement data of the insured patients,based on the early,the mid-term,and the recent periods since the urban employee basic medical insurance was implemented since 2002.Results The ratio of good payment effect units reduced to 9.09%(the recent)from 42.86%(the earlier).The ratio of poor payment effect units was 42.86% in the early,to mid-term 18.18%,and sharply increased to 77.27%in the near term.The settlement units which exceeded its flat standard accounted for 52%,50%, and 91%respectively(in the early,the mid-term,and the recent).The medical insurance agency and the hospital shared the overrun costs by 52.88%and 47.12%respectively in 201 1.Conclusion The payment effect of the urban employee medical insurance was greatly influenced by the adjustment of medical insurance policy and the payment ability of the pooling fund.It should improve the payment effect of the medical insurance timely,so as to ensure the hospitals’operation normally.The hospitals should take the effective cost management measures so as to deal with the increasing cost control pressure.

In order to increase the yield and quality of the medicinal plant and enhance the competitive power of industry of medicinal plant in our country, this paper analyzed the status, problem and countermeasure of the tissue culture of medicinal plant on large scale. Although the biotechnology is one of the most efficient and promising means in production of medicinal plant, it still has problems such as stability of the material, safety of the transgenic medicinal plant and optimization of cultured condition. Establishing perfect evaluation system according to the characteristic of the medicinal plant is the key measures to assure the sustainable development of the tissue culture of medicinal plant on large scale.
Drug Industry ; methods ; standards ; Medicine, Chinese Traditional ; methods ; standards ; Plants, Genetically Modified ; Plants, Medicinal ; genetics ; growth & development ; Quality Control ; Tissue Culture Techniques ; methods ; standards

ObjectiveTo explore the efficacy of 131 Ⅰ treatment in Graves' disease,and to analyze the related factors.MethodIn 87 patients with Graves' disease,thyroid uptake ratio( TUR ) and its effective half-life(EHL) were compared before and after 131 Ⅰ treatment.The weight of thyroid gland was evaluated with radio-imaging and type B ultrasonography.ResultThe dose of 131 Ⅰ was ( 185.2 ± 148.0 ) MBq.The TUR of tracer dose and therapeutic 131 Ⅰ dose were 76.5 ％ ±8.2％ and 73.3 ％ ±9.0％ ( t =2.451,P =0.008 ).The EHL were ( 5.2±0.7 ) and ( 5.0 ±0.8 )days,respectively ( t =1.998,P =0.023 ).After followe-up of ( 57.0 ±26.3 ) months,49 patients ( 56.3 ％ ) became euthyroid,14 ( 16.1％ )manifested delayed hypothyroidism,and 24 (27.6％)remained in hyperthyroidism.Thyroid autoantibodies were found in 34.5％ patients,of whom,the incidence of hypothyroidism was higher in patients with positive autoantibodies than those with negative ones (30.0％ vs 8.8％,x2 =6.560,P =0.009 ).ConclusionBoth TUR and EHL of therapeutic doses of 131 Ⅰ are lower than the tracer doses.Positive thyroid autoantibodies may affect the outcome of the 131 Ⅰ treatment.

A total of 167 coronary heart disease (CHD) patients were divided into metabolic syndrome (MS) group (68 cases) and non-MS group (99 cases). There were significant differences in the disease-related metabolic indicators and coronary angiography (multivessel lesions, diffuse stenosis, occlusive lesions, Ginsini score) between MS group and non-MS group ( all P<0.05 ). When the patients with MS were divided into 3 groups according to the number of componernts of MS, three lesions, diffuse stenosis, and occlusive lesions were more frequent in five components group compared with three components group. Ginsini points rised with the increased risk factors. There existed differences in Ginsini score between three components group and four, five components group (P<0. 05 or P<0.01 ). Multivariable logistic regression analysis showed that obesity, hypertension,diabetes, high low-density lipoprotein-cholesterol, and low high-density lipoprotein-cholesterol were the predictors of CHD in patients with MS (P<0.05 or P<0.01 ).

Objective To establish a method of sperm DNA extraction in mixed stain by using DNase-Ⅰ purificationcombined with alkaline lysis method in forensic science.Methods 79 mixed stain samples of criminal cases were collected.Sperm DNA was extracted using the purification of DNase-Ⅰ binding alkaline lysis method.16 STR loci were genotyped with fluorescent multiplex amplification system.The typing results were compared with that of extracted using two-step differential extraction procedure.Results Of all 79 mixed stain samples,64 samples were genotyped successfully by using DNase-Ⅰ purification combined with alkaline lysis method while 57 samples were genotyped successfully with two-step differential extraction procedure.There was significant difference between two methods(P=0.039).The purification of DNase-Ⅰ binding alkaline lysis method had a higher success rate and lower cost than that of two-step differential extraction procedure.Conclusion Purification of DNase-Ⅰ binding alkaline lysis method can increase the typing success rate of the mixed stain samples.The method is simple,rapid and easy to be automated,and suitable for forensic identification test.

Macrophages are heterogeneous and diversified, and can be polarized into different phenotypes in various microenvironments and physiological or pathological conditions. Major macrophage subpopulations including classically activated(M1) and alternatively activated(M2) macrophages, which represent different surface receptors, secret different cytokines and chemokines, are regulated by different signal paths of transcriptions and epigenetic levels, and play distinctive roles in tumor progress. TCMs may improve the microenvironment by regulating phenotype polarization of macrophages. So far, specific biomarkers and polarized molecules mechanisms generated through the macrophage polarization approach are still unclear. In this article, we merely summarize the advance in domestic and foreign studies on phenotype polarization of macrophages and regulatory mechanisms and look into the future of intervention with TCMs.
Animals ; Cell Polarity ; Humans ; Macrophages ; physiology ; Medicine, Chinese Traditional ; Neoplasms ; drug therapy ; immunology ; Phenotype

Objective To investigate the influence of benzopyrene on extracellular matrix(ECM) protein deposition of human airway smooth muscle cells(HASMC) and the related pathway mechanism.Methods HASMC were primarily cultured and the 2-6 generations cells were applied in this experiment.The expression amount of ECM gene and protein was detected by real time PCR and Western Blot the phosphorylation level was analyzed by using the Western Blot method.Results Benzopyrene could to increase the expression of HASMC collagen Ⅰ α1 protein (P＜0.01) and ECM protein (including collagen Ⅰ α1,versican,fibronectin,laminin α2) mRNA(P＜0.05).Benzopyrene could induce the rapid increase of ERK1/2 phosphorylation level (P＜0.01).Furthermore,the ERK pathway inhibitor PD98059 could significantly inhibit the increase of benzopyrene-induced collagen Ⅰ α1 (P＜0.01)and ECM protein(including collagen Ⅰ α1,versican,fibronectin,laminin α2) mRNA expression(P＜0.01).Conclusion Benzopyrene induces the ECM protein deposition of HASMC by activating the ERK1/2 pathway,blocking the ERK1/2 signal pathway can inhibit the benzopyrene-induced airway remodeling.