Chinese meteria medica (CMM) chain is a long-span chain covering agriculture which mainly depends on the forces of nature as well as high-tech CMM industry, CMM expertise industry and fast developing CMM circulation industry. Imbalance among the development of these industries produces bottlenecks and hinders the operation of the entire production chain. After analyzing the structure of Chinese meteria medica industrial chain from the perspective of national economy industry, three industry classifications and differentiation of factor intensity, we conclude that the complex structure of CMM industry chain is attributable to these three aspects. And the complexity is mainly shown at complex industry, varied product types, different coordination of various industrial sections and different technical growth speed of varied industry. We propose that structural complexity is the natural property of the chain, which is the main reason of industry sector development imbalance and bottleneck. Results of this research could provide theoretical analysis for future research on the coordination of industrial chain and the efficiency of resource allocation.
China ; Drug Industry ; economics ; standards ; Medicine, Chinese Traditional ; economics ; standards ; Plants, Medicinal ; chemistry

The objective of the medical students’ education cost control is to reasonably reduce the education cost differences caused by mismanagement and insufficient investment. The budget is an important tool for the control;the elabrate cost accounting is the essential information condition for the control. It is proposed that enhancing the control power must clear responsibility cost, the education quality cost is guaranteed through both increasing income and reducing expenditure.

Objective To study the predictive value of high-sensitivity C-reactive protein (hs-CRP) to perineonate mortality in early onset severe pre-eclampsia (EOSPE) pregnant women. Methods Seventy-five pregnant women with EOSPE (EOSPE group) and 75 pregnant women with gestational hypertension (control group) were selected. The serum tumor necrosis factor (TNF)-α, interleukin (IL)-2 and hs-CRP levels were detected. The data of perineonate death in EOSPE group were recorded, then the pregnant women were divided into death subgroup and survival subgroup. Results The hs-CRP, TNF-αand IL-2 levels in EOSPE group were significantly higher than those in control group:(7.2 ± 2.1) mg/L vs. (2.5 ± 1.0) mg/L, (28.9 ± 5.3) ng/L vs. (12.4 ± 3.5) ng/L and (134.3 ± 34.6) ng/L vs. (104.2 ± 28.5) ng/L, and there were statistical differences (P<0.05). In EOSPE group, 18 perineonates died (death subgroup), and 57 perineonates were survival (survival subgroup). The hs-CRP in death subgroup was significantly higher than that in survival subgroup: (8.9 ± 1.3) mg/L vs. (7.1 ± 1.2) mg/L, and there was statistical difference (P<0.05). But there were no statistical differences in TNF-αand IL-2 between death subgroup and survival subgroup (P>0.05). Receiver operating characteristic curve analysis result showed that the best threshold of hs-CRP for predicting the perineonate mortality caused by EOSPE was 7.98 mg/L, and the area under the curve was 0.779 (95％CI 0.637 to 0.922), with a sensitivity of 0.83 and a specificity of 0.68. Conclusions Inflammatory reaction is involved in the pathophysiological process of EOSPE, and hs-CRP is a good index to predict perineonate death in EOSPE pregnant women.

Objective: To intimately assess the internal stress distribution in ceramic veneer bonding layer. Methods:Six buccolingual cross section models of the incisor restored with IPS-Empress ceramic veneer were built with the MSC/NASTRAN software. 2D-finite element method was used to analyze the stress distribution regularity of the bonding layer on the models under different functional load. Results: Stress concentration areas of ceramic veneer bonding layer were regularly located on the incisal margin and cervical margin. Under the same condition, incisal load caused highest stresse on the adhesive layer. Following the load shift from incisal to gingival area, the stress was gradually decreased.When the functional load acted on the palate margin of the restoration, the compressive stress on the bonding layer was significantly increased. Different load angle generated stress change in the bonding layer. The shear stress on adhesive layer increased following the horizontal load angle increasing close to the debonding level. Among the different incisal reduction designs there was no significant Von Mises stress variation under the same load condition. However, when the incisal edge was reduced by more than 4 mm, the tensile stresses in the bonding layer greatly increased. Conclusion: Restoration margin should be kept away from the tooth contact area, be exposed to minimal occlusion contact. The functional load should be induced to follow the tooth long axis. Edge to edge occlusion should be avoided. When incisal areas need to be altered, the incisal overlap or butt margin design will not cause any stress problem in the bonding layer. When restoring the incisal defect for more than 4 mm, the bonding agents must be selected carefully.

Objective To understand the situation of indoor air fluoride and arsenic pollution caused by coal-burning and the impact of the pollution on children health in the rural area,southern Shaanxi Province.Method 77 fluoride samples and 186 arsenic samples were collected in 65 investigated villages of 5 counties in southern Shaanxi Province.13 120 children aged 8-12 years were selected for dental fluorosis examination,13 386 children aged 6-18 years for arsenism examination.Results Both of the average content of fluoride and arsenic in the indoor air exceeded the national standard limit.Fluorine content was 0.001-0.541 mg/m3 with an average of 0.038 4 mg/m3,arsenic content was 0.00-63.83 ?g/m3 with an average of 4.76 ?g/m3.The prevalence rates of dental fluorosis and arsenism were 45.50% and 1.86% respectively.Conclusion The indoor air fluoride and arsenic pollution caused by coal-burning in the investigated rural area is serious and the pollution has caused the prevalence of endemic fluorosis and endemic arsenism among the local children.

Dating of injury and the discrimination in trauma and disease is always an important hot topic in the field of forensic medicine. Lumbar disc herniation is a kind of physiological degeneration. To seek a method for deducing the occurrence time of traumatic LDH exactly, this article reviewed the correlation between humoral, celllur immunity and the occurrence time of LDH. It is suggested that some characteristic changes of the expression of IgG,IgM,macrophages may be a helpful method for the occurrence time deduction of traumatic LDH.

Objective To determine the prevalence of vulvovaginal candidiasis(VVC) in pregnant women,to test its antifungal susceptibility to miconazole,clotrimazole,fluconazole, itrocona- zole,and nystatin and to treat VVC with miconazole in pregnancy. Methods Vaginal swabs were collected from unselected pregnant women in prenatal clinic. The antifungal susceptibility of 131 strains of Candidas to miconazole,clotrimazole,fluconazole,itroconazole,and nystatin were detected by Neo-Sensitabs susceptibility testing. 66 cases of VVC were treated with 6 day-course of miconazole(400 mg/d). Results The prevalence of VVC in pregnant women was 12.7%(127/1000). 37.4%(374/1000) had previous VVC. 0.6%(6/1000)of women were recurrent VVC(RVVC),which occupied 4.7%(6/127) of VVC. C. albicans was the most frequently(87.1%) isolated pathogen followed by C. glabrata (9.9%) ,C. tropicalis(1.5%),and C. krsei(1.5%). The resistant rate of C. albicans to miconazole,clotrimazole,fluconazole,itroconazole,and nystatin was 10.5%、2.6%、 6.1%、 7.9%,and 0. All 13 strains of C. glabrata was susceptible to miconazole,nystatin and susceptible or susceptible-dependent-upon-dose (SDD) to clotrimazole,fluconazole,and itroconazole. The mycological cure rate of miconazole on day 7～14 and day 28～42 was 84.8%(56/66 cases) and 80.3% (53/66 cases). Conclusions VVC is very common in pregnancy. C. albicans is the predominant Candida species in VVC and has some resistance to miconazole,clotrimazole,fluconazole,itroconazole,and nystatin. Miconazole therapy is effective on VVC treatment in pregnant women. Non-effective treatment might be associated with Candidas resistance.

Objective To evaluate the effects of different doses of epidural capsaicin on pain threshold, neurological function and spinal neurons.Methods Thirty-six male New Zealand white rabbits weighing 2.5-3.0 kg were randomly divided into 4 groups (n = 9 each): control group and 3 capsaicin groups (Cap 1, 2, 3). The animals were anesthetized with 10% chloral hydrate 50-75 mg?kg-1 i.v. . An intrathecal catheter was inserted at L6,7 interspace and correct placement was confirmed by outflow of CSF. 1 ml of 0.1 % ( Cap1) , 0.25 % ( Cap2 ) or 0.5% (Cap3 ) capsaicin was injected intrathecally 24 h after IT catheter was placed. Threshold to noxious thermal stimuli was measured and gait of the hind limbs were assessed using Johnson score (5 = normal, 0 = completely paralyzed), before and 1, 3, 7, 10, 15, 20, 25, 30 days after IT injection. On the 2nd day after IT injection 3 animals were killed in each group and the lumbar segment of spinal cord (L6,7) was immediately removed for light and electron microscopic examination. Results The threshold to noxious thermal stimuli was significantly higher in the 3 capsaicin groups than in control group ( P

Objective To establish a simple , practical , highly-effective and stable method for the isolation and cultivation of rat hair follicle cells. Methods Under sterile condition, single hair follicle was taken out after the skin around the barbel of SD neonatal rats was sheared off. And then the hair follicles were digested with two-step method with Type Ⅰcollagenase and trypsin. The obtained cell suspension was planted into the culture plate which was covered with extracellular matrix, and then was cultivated with K-SFM culture medium containing fetal bovine serum with volume fraction of 1%. On the next day, K-SFM culture medium was replaced with serum-free culture medium. The remaining tissues were cut into pieces and spread out in the culture flask, and then were cultivated with HG-DMEM culture medium containing serum. Two kinds of cells were harvested and then were identified by immunofluorescence. The hair follicle epithelial cells were tested by flow cytometer. Results The hair follicle epithelial cells obtained through the above methods showed rapid adherence, and were round or polygon-like , with typical cobblestone-like morphology. The long spindle-shaped cells were seen around the tissues cultivated, having many protrusions on the surface of the cells, and they were interconnected into reticular structure. The expression of cytokeratin 15, cytokeratin 19 and β1 integrin in epithelial cells were positive. Most of the epithelial cells were in the G1 phase, accounting for 75.6%. The expression of laminin ( LN), fibronectin ( FN) and vimentin in the connective tissue sheath cells were also positive. Conclusion The cells harvested by modified two-step enzyme digestion method have confirmed as hair follicle cells and fibroblasts, and the obtained cells are of rapid adherence, good homogeneity, and active proliferation.

Objective To explore the feasibility of repairing skin defect with Pelnac tissue engineering skin and cultured epidermal stem cells ( ESCs) and fibroblasts. Methods ESCs and fibroblasts in SD rats were isolated and cultured in vitro, and then were detected by immunohistochemistry. Fibroblasts were seeded in Pelnac material to construct dermis, and ESCs were seeded on the surface of dermis to construct tissue engineering skin. Thirty BALC/c nude mice were randomly divided into groups A, B and C. After mouse back skin defect model was established, group A was transplanted with Pelnac material, group B was transplanted with compound of Pelnac and fibroblasts, and group C was transplanted with Pelnac tissue engineering skin. The wound healing was observed after operation. The wound tissues were sampled for pathological histology test on the 5th and 7th day after transplantation. Results The expression of cytokeratin 15 and β1 integrin in ESCs was positive, and the expression of laminin ( LN) and fibronectin ( FN) in fibroblasts was positive. In group C, the wound healing of nude mice was the best, characterized by the proliferation of fibroblasts, obvious new capillaries and regularly arranged epidermal cells at the transplantation sites. Conclusion Pelnac tissue engineering skin has good effects on promoting repair of skin defect of nude mice.