OBJECTIVE:To investigate the incidence,clinical features and influential factor of adverse drug events appeared in Zhuhai area.METHODS:246 cases with adverse drug events reported in our hospital from Jan.to Sep.in 2007 were analyzed statistically.RESULTS:Of the total drugs inducing adverse drug events(246 cases),anti-infectives took the lead(43.24%),which was related to its great variety,high application frequency and application range;78.05% were induced by intravenous infusion;41.12% were manifested as lesion of skin and its appendants;119(48.37%)failed to follow the direction of package inserts,of which,113 cases involved the use of anti-infectives.CONCLUSION:Medical workers should attach great importance to the acquisition of medication knowledge as well as the medication safety at each steps.

OBJECTIVE: To explore the characteristics and general pattern of adverse drug events(ADE) in Zhuhai area.METHODS: 311 ADE cases collected from Aug.2005 to Dec.2006 by Zhuhai workstation of Guangdong ARD Monitoring Center were statistically analyzed in respect of patients' age and sex,route of administration,category of drugs involved,ADR-involving organs/systems and clinical manifestations etc.RESULTS: The antiinfective drugs showed highest incidence rate of ADE,which caused ADE in 213 cases(68.49%).The most common clinical manifestations of the ADE were the damage of skin and adnexa,accounting for 51.45%(160 cases),all recovered after receiving corrsponding treatment.CONCLUSION: Allergic history of patients and their family members should be inquired in detail before the use of drugs and high alert should be given to pharmaceutical incompatibility,and the patients should be given fully attention after medication to reduce the incidence of ADE.

Peri-implantitis and implant failure are common issues in the implant dentistry. The contaminated implant can be treated with mechanical, chemical and assisted methods for the formation of re-osseointegration. Re-osseointegration is achievable with valid bone regeneration strategies. The survival rate of implant into the site of previous failure is lower than that of the initial implant. For the hopeless and failed implant, it is necessary to remove the implant with corresponding technique.

[Objective]To evaluate the effect of treatment of unstable intertrochanteric fracture with dynamic condylar screw.[Method]Fifty-six cases of unstable intertrochanteric fractures were treated with typical ORIF (open reduction and internal fixation) with dynamic condylar screw from 2000 to 2004. According to the Evan's classification systems, there were 19 cases of Evan's Ⅲ fracture, 27 cases of Evan's Ⅳ fracture and 10 cases oblique reverse Evan'sⅤ fracture. The average period of follow-up was 10 months (8～15 months).[Result]All cases had union with average union time of 4 months, no coxae inversion, fixation failure and fracture nonunion. The satisfactory rate of function was 89%. [Conclusion]For unstable intertrochanteric fracture,including Evan's Ⅲ, Evan's Ⅳ and oblique reverse Evan'sⅤ fracture, using DCS is a good method to improve the clinical results.

Stem cells are crucial for embryonic development and in the maintenance of adult cellular homeostasis.Understanding the regulatory network of stem cells,including embryonic and adult stem cells,will allow us to learn the pathogenesis and possibly design novel approaches to treat many diseases (such as cancer and degeneration).The retinoblastoma (Rb) pathway controls cellular proliferation,differentiation and death.More and more evidences support an important role of Rb activity in the biology of stem and progenitor cells.Transiently inactivating Rb pathway might favor the expanding of functional stem cell populations,thus have values in the future stem cell applications.

Objective To assess the efficacy of Xuezhikang capsule on hyperuricacidemia and its safety. Methods The study was designed as a random, double-blind placebo controlled clinical trial. 80 hyperuricacidemia patients were divided randomly into test group and control group (40 in test group and 40 in control group). The course of treatment was 28 days. Results 75 patients finished the trial (38 in test group and 37 in control group). After 28 days of treatment, the differences in reduction of UA, XOD, FINs, Homa-IR, TC, TG, Lp, CRP, ET, ?2-MG and elevation of HDL of the test group were statistic significance. No side effect was found in the trial. Conclusion Xuezhikang capsule has good clinical effect and safety in the treatment of hyperuricacidemia.

AIM: To investigate the enhancement of ethanol on percutaneous permeation and topical anaesthesia of tetracaine gel. METHODS: Tetracaine (4%, w/w) gels were prepared by using 20% and 70% ethanol as penetration enhancers. Franz diffusion chamber and UV spectrophotometry were adopted in the transdermal osmotic test of isolated mouse skin. Von Frey test was used to evaluate the topical anesthetic effect of tetracaine gels. RESULTS: 20% and 70% ethanol greatly improved the percutaneous permeation of tetracaine gel (P

Atomoxetine is a noradrenaline transmitter reuptake inhibitor which can selectively inhibit presynaptic noradrenaline transport protein,strengthen noradrenaline's resupination effect,and increases noradrenaline's activity released by synaptic cleft to improve the symptoms of the attention deficit hyperactivity disorder(ADHD)patients.ADHD patients often accompany with other psychological diseases like oppositional defiant disorder,anxiety disorder,which may hinder the diagnosis of ADHD.There is still no accepted effective medicine nowadays.Currently,research on the treatment of the ADHD is more and more popular.Good therapeutic effect of atomoxetine to treat ADHD has been found in resent studies.This article summarized the current management of using atomoxetine to treat ADHD.

BACKGROUND: Renin-angiotensin-aldosterone system existed in bone tissue. Recent studies on antihypertensive drugs found that angiotensin converting enzyme inhibitor type antihypertensive drug was possibly effective for osteoporosis. Perindopril is one of the commonly used antihypertensive drugs. Whether perindopril affected bone metabolism or could be used in anti-osteoporosis has not been reported.
OBJECTIVE: To observe effects of perindopril on bone metabolism in a rat model of osteoporosis induced by retinoic acid.
METHODS: Fifty Sprague-Dawley rats were randomly divided into five groups, with ten in each group. In the model group and each perindopril groups, rats were intragastricaly administered retinoic acid solution 80 mg/kg per day. After successful model establishment, rats in different perindopril groups were intragastrical y administered perindopril 2, 4 and 8 mg/kg per day, once a day, for 42 consecutive days. In the normal control and model groups, rats were given an equal volume of distil ed water. Serum calcium, phosphorus, alkaline phosphatase, bone mass and bone mineral density were detected in each group. Expression of bone specific alkaline phosphatase and tartrate-resistant acid phosphatase mRNA in bone tissue was determined.
RESULTS AND CONCLUSION: Compared with the model group, after treatment with perindopril, serum calcium and phosphorus levels were increased, alkaline phosphatase activities were significantly decreased, bone mass and bone mineral density were obviously increased in rats with retinoic acid-induced osteoporosis. Expression of bone specific alkaline phosphatase mRNA was higher in the perindopril 8 mg/kg group than in the perindopril 2 and 4 mg/kg groups and model group. Tartrate-resistant acid phosphatase mRNA expression was higher in the perindopril 8 mg/kg group than in the model group. These results indicated that perindopril could improve partial bone metabolic biochemical markers in osteoporosis rats, promoted bone formation by up-regulating bone specific alkaline phosphatase mRNA expression, and had a certain preventive effect on retinoic acid-induced osteoporosis.

Objective To prepare two types of biodegradable modified materials (chitosan and collagen)and evaluate whether the new materials are suitable for tissue engineering cartilage.Methods Collagen and chitosan were both modified by poly-γ-benzyl-L-glutamate-co-glutamine acid (PBLG-co-PGA) with different proportions.The contact angle,degradation rate,tensile strength,cell attachment and cytocompatibility were tested and compared.Results As the PBLG-co-PGA content varied,the degradation rates of PBLG-co-PGA composites became adjustable,the hydrophilicity of PBLG-co-PGA/chitosan was improved,and the tensile strength increased in PBLG-co-PGA/collagen composite.The composites with 30％ PBLG-co-PGA were chosen for cytocompatibility and cell attachment experiments.The rabbit condrocytes grew significantly better on PBLG-co-PGA/chitosan than on other three materials(P＜0.05).Conclusion PBLG can improve the hydrophilicity,tensile strength and regulate the degradation rate of composite materials,and the cytocompatibility of the composites with 30％ of PBLG is good,among which PBLG-co-PGA/chitosan can even promote cell proliferation.It could be a new choice of scaffold for tissue engineering cartilage.