OBJECTIVE: To discuss the limitation of the current TRIPS due to local protection and to seek for a balance between drug patent protection and public health.METHODS: The related clauses in TRIPS in terms of protection on drug patent and public health were introduced,and Nordhaus' model was used to analyze the conflict between drug patent protection and public health.RESULTS: The area with minimum level of drug patent protection can't be enlarged infinitely geographically.CONCLUSIONS: Preferential policies should be given to the developing countries to secure the public health while strengthening the drug patent protection gradually.

The basic design plan of unified intelligence system with a demonstration effect was worked out using the system integration method, and its technical implementation was elaborated in aspects of enterprise service bus, database integration, platform service, and key business application from the operational point. Its extended appli-cation in clinical practice, scientific research, decision-making and hospital management was studied in order to further improve the hospital management level.

Objective To explore transthyretin (TTR) effect on retinal vascular endothelial cells (hREC) under high glucose and hypoxia environment.Methods hREC and human retinal pigment epithelial cell (hRPEC) were cultured at low-glucose (LG),high glucose (HG) and hypoxia.The glucose concentration was increased from 5.5 mmol/L up to 25 mmol/L,and hypoxia was induced by 200 μmol/L CoCl2.The cells were divided into LG group,LG-hypoxia group,HG group,HG-hypoxia group according to the different cell culture environment.The growth index was detected at 0,4,8,16,24,36,48,60,72 hours after cultured.Furthermore,hREC and hRPEC were also cultured with additional TTR (4 μmol/L),respectively.Then transwell co-culture system was employed to reveal the effects of hRPEC on the growth of hREC.Results At 72 hours after cultured,the growth index of hREC and hRPEC in LG group were increased as compared with LG-hypoxia group and HG group (hREC:F=17.098,22.970;P＜0.05.hRPEC:F=45.442,9.011;P＜0.05);the growth index of hREC and hRPEC were decreased in HG group and HG-hypoxia group (hREC:F=146.184,P＜0.05;hRPEC:F=27.907,P＜0.05).Additionally,hREC could be significantly repressed by added TTR during culture with high concentration of glucose (F=161.430,24.106;P＜0.05).hREC could be significantly increased by added TTR during culture with low concentration of glucose (F =200.486,48.662;P ＜ 0.05).In co-culture process,hRPEC revealed inhibition activity against hREC under both natural and abnormal environment (LG group:F=15.711,P＜ 0.05;LG-hypoxia group:F =45.659,P＜0.05;HG group:F =7.857,P ＜0.05;HG-hypoxia group:F=6.348,P＜0.05).Conclusion Under high glucose and hypoxia environment,the growth of hREC from neovascular could be inhibited by TTR.

[Objective] To investigate the clinical efficacy of tacalcitol combined Halometasone sequential therapy in the patients of plaque psoriasis. [Methods] 117 cases of plaque psoriasis col ected between 2011.01 and 2013.02 were randomly divided into treatment group and control group. The treatment group were treated with tacalcitol and Halometasone therapy, and required topical use Halometasone(1 time/day) in the morning ,tacalcitol use in the evening(1 time/day) before the first 2 weeks. Continuous two weeks treatment from Monday to Friday with tacalcitol(2 times/day), Saturday and Sunday with Halometasone(2 times/day), final y the transition to be used alone tacalcitol(2 times/day) in the next two weeks of continuous treatment. Control group of pa-tients given alone Halometasone(2 times/day) for 6 consecutive weeks. Observe the adverse reactions PASI scores during and after completion of treatment within the two groups. Al patients were fol owed for three months, observed recurrence. [Results] The PASI score between two groups of patients declined during treatment, especial y at the 4th and 6th week within the treatment group. Both groups had no serious adverse reactions. In treatment group, 54 patients had effective responses, the total effective rate was 90%, significantly better than the control group(41 cases,71.9%). In the fol ow-up of 3 months, the recur-rence rate was 11.1%in the treatment group, significantly lower than the control group(31.6%). The difference of total efficiency and the recurrence rate with-in the two groups was statistical y significant. [Conclusion] Tacalcitol combined Halometasone sequential therapy of plaque psoriasis has significant clinical effi-cacy and low recurrence rate.

AIM: To observe and compare efficacy of the lower eyelid twitch shift joint outer canthal ligament shortening surgery and orbicularis muscle resection surgery to treat degenerative entropion.
METHODS: Patients with degenerative entropion in our hospital were selected. The test group was 40 cases ( 70 eyes), of which double eyes with attack (30 cases), and lower eyelid twitch shift joint outer canthal ligament shortening surgery was applied to the test group. Control group was 20 cases (26 eyes), of which double eyes with attack ( 6 cases ) , and the control group was used by orbicularis muscle resection surgery. The correction rate, double eyelid symmetry and overcorrection rate were observed in two groups at postoperative 1wk. The long-term recurrence rate, double eyelid symmetry and overcorrection rate with follow-up 6mo were observed.
RESULTS: After 1wk, the correction rate of experimental group 98. 6%, undercorrection rate of that was 1. 4%, all the eyelid was symmetry, only one eye with a slight overcorrection. Correction rate of control group was 92. 3%; all the eyelid was symmetry, and the poor rate of this group was 7. 7%. After 6mo, correction rate of experimental group was 95. 2%; undercorrection rate of experimental group was 3. 2%, and overcorrection rate was 1. 6%. Correction rate of control group was 87%, and 2 eyes of recurrence, 1 eye with a poor overcorrection. Double eyelid was symmetry, overcorrection rate difference was not statistically significant ( P > 0. 05 ), and the correction rate were significantly different (P<0. 05).
CONCLUSION: Compared toorbicularis muscle resection surgery, postoperative recurrence rate of lower eyelid twitch shift joint outer canthal ligament shortening surgery is significantly lowered.

Objective To detect the changes of serum complement 3(C_3) and C_4 in neonates with hypoxic-ischemic encephalopathy(HIE) and its effects on non-specific immunological function.Methods Sixty-seven neonates with HIE and 30 normal full-term infants were recruited in the study.According to characteristic of immunological function and severity of HIE,the neonates were divided into 1-3 day group(n=32)and 4-6 day group(n=35).In each group,it was divided into mild group and moderate-severe group.The complement in serum was detected by radial immunodiffusion assay with Behring Nephelometer 100 Analyzer.Results In 1-3 day group,levels of C_3,C_4 in serum were lower than those in control group(P

0.05).In 4-6 day group:percentages of CD3+ and CD4+ cells and ratio of CD4+/CD8+ in neonates with HIE were all obviously lower than those in control group(P0.05).The level of percentages of CD3+ and CD4+ cells and ratio of CD4+/CD8+ in 9 subjects with moderate-severe HIE were remarkably higher during recovery stage than those during acute stage(P

Objective: To retrospectively analyze the correlation between serum CA15-3 level and the molecular subtypes of metastatic breast cancer. Methods: A total of 268 patients diagnosed as having metastatic breast cancer in Hubei Cancer Hospital were recruited in this study. The serum CA15-3 level was examined by immunoradiometric assay, and the expression levels of ER (estrogen receptor), PR (progesterone receptor) and HER-2 (human epidermal growth factor receptor-2) were detected by immunohistochemistry and FISH (fluorescence in situ hybridization). The 268 patients were classified into 3 groups according to hormone receptor status: luminal subtype (ER-positive irrespective of HER-2-positive/negative and PR-positive/negative), HER-2 over-expression subtype (ER-negative/PR-negative/HER-2-positive) and basal-like subtype (ER-negative/PR-negative/HER-2-negative). The serum CA15-3 level and its elevation among freguency three subtypes of metastatic breast cancer were compared. Results: The average level of CA15-3 was significantly different among the three subtypes. The average level of CA15-3 in luminal subtype (96 U/mL) was significantly higher than those in HER-2 overexpression subtype (52 U/mL) and basal-like subtype (72 U/mL) (P = 0.017). The frequency of elevation of serum CA15-3 level in patients with luminal subtype (80.8%) was much higher than those in patients with HER-2 over-expression subtype (55.6%) and basal-like subtype (68.6%) (P = 0.002). Compared to other metastasis, the mean level of CA15-3 and the incidence of CA15-3 elevation were higher in patients with bone metastasis (P < 0.05). Conclusion: The serum CA15-3 level in patients with luminal subtype of metastatic breast cancer is obviously increased, and the frequency of elevation of serum CA15-3 level is also significantly higher. It is suggested that the detection of serum CA15-3 is more valuable in the surveillance of recurrence and metastasis luminal subtype of ER-positive of breast cancer. Copyright © 2012 by TUMOR.

A method of simultaneous determination of the eleven phenol and aniline dyes in oxidative hair dyes by ultrasonic-assisted extraction and high performance liquid chromatography-tandem mass spectrometry was developed. The orthogonal and single-factor experiments were designed to and optimize the ultrasonic-assisted extraction conditions, and the samples were extracted using 10 mL of 5% methanol under the conditions of ascorbic acid as an antioxidant for 10 min. The gradient elution program and the electrospray ionization mode change were together used for the optimization of the measurements, and the determinations were completed by using the multi-reaction monitoring scan. The detection limits were 1. 15-9. 43 μg/g, the recoveries of spiked samples were 88. 0%-118. 1%. The method can be used to determine trace prohibited and restricted dyes in hair dyes.

Hyperpolarization-activated and cyclic nucleotide-gated (HCN) channels, distributing in a variety of tissues, especially in excitable cells such as heart cells and many kinds of neurons, have an important role in the modulation of heart rate and neuronal excitability. Different from typical voltage-gated sodium channels and potassium channels, HCN channels were evoked inward currents when the cell was hyperpolarized. More and more recent studies have disclosed that HCN channels play important roles in the nervous system, which were linked with its special electrophysiological features as well as its regulatory effect on the cellular membrane excitability. HCN channels could be modulated by many factors including both extracellular molecules and intracellular signaling cascades, which made its functions complicated in the different condition. Based on its role, HCN channels are presumed to be a promising target for chronic pain and brain disorders. In this paper, we will focus on the advancement of roles of HCN channels in the neural system as well as its complex modulator factors.
Cyclic Nucleotide-Gated Cation Channels ; physiology ; Humans ; Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels ; physiology ; Membrane Potentials ; Neurons ; physiology ; Potassium Channels ; physiology