OBJECTIVE:To study the antiasthmatic effect of Mabuterol in guinea pigs.METHODS:Severe dyspnea was induced by2%acetylcholine and0.1%histamine solution in conscious guinea pigs.RESULTS:Experiment showed that Mabuterol could significantly inhibit the experimental asthma induced by mixture of2%acetylcholine and0.1%histamine solution in conscious guinea pigs.It also significantly prolonged the latency of induced asthma and decreased the number of guinea pigs on twitches induced by asthma.Bronchodilating effect of Mabuterol was in a dose-dependent manner.The ED 50 of Mabuterol was0.2mg/kg and95%confidence limit was0.08～0.49mg/kg.CONCLUSION:In comparison with salbutanmol,Mabuterol is longer in duration and more potent in action of bronchodilatation.

OBJECTIVETo describe the clinical manifestations and lung imaging characteristics of the human transmissible highly pathogenic H5N1 avian influenza.

METHODSThe clinical manifestations and lung imaging characteristics of human transmissible highly pathogenic H5N1 avian influenza in one patient were reviewed and analyzed.

RESULTSThe patient had the clear history of occupational exposure. The fever and symptoms of influenza were prominent at onset and associated with the symptoms of the digestive tract. The laboratory findings comprised the significant decrease of the white blood cell count and the lymphocyte number and the impairment of the liver function and the myocardial enzymes. The disease progressed rapidly and multiple organs including lung, heart, liver and kidneys were involved. It was ineffective to administer anti-fungal, anti-virus and anti-inflammation medicines. It was in vain to use mechanical ventilation and pneumothorax intubation and closed drainage as well as the support therapy. In the X-ray film, the lesions progressed quickly and changed diversely with absorption and development at the same time. The nasal and throat swabs and the gargle specimen were detected with RT-PCR and real time PCR by Chinese Center for Disease Control and Prevention. The results showed that both the specific HA and NA genes of the avian influenza virus H5N1 subtype were positive and in the same time a strain of avian influenza virus A/jiangxi/1/2005H5N1) was separated and obtained from the nasal and throat swabs. The autopsy showed that diffuse injury of alveolus in lungs, DIC and multiple organ injury.

CONCLUSIONThe human transmissible highly pathogenic H5N1 avian influenza is a lethal disease. The disease progresses rapidly with the absorption and development at the same time in the lungs and unfortunately there are no effective therapeutic measures. The prevention of the contagious disease for the occupationally exposed population should be emphasized.

Adult ; Humans ; Influenza A Virus, H5N1 Subtype ; Influenza, Human ; diagnosis ; etiology ; therapy ; Male ; Occupational Exposure ; adverse effects

Objective To evaluate the efficacy and safety of intense pulsed light (IPL) combined with hydroquinone cream for melasma treatment.Methods Thirty-five patients with melasma were treated between February 2015 and February 2017,20 patients treated with IPL combined with hydroquinone cream and 15 patients with IPL alone.All cases were female patients with Fitzpatrick skin types Ⅲ and Ⅳ,and subjected to 4 weeks treatment 1 time,5 times for a course of treatment.All patients were followed up for six months and the efficacy and safety of the treatment were analyzed comprehensively by subjective satisfaction and physician evaluation.Results All the patients were treated without discomfort and treated patients were effectively followed up.The satisfactory rate of IPL treatment group was 73.3％,and that of combined with hydroquinone cream group was 100％.Two groups of satisfactory rates were higher in IPL combined with hydroquinone cream.The total effective rate of the IPL treatment group was 53.3％ compared with that of the 35 patients before and after treatment;in IPL combined with hydroquinone cream treatment group the total effective rate was 85.0％.IPL combined with hydroquinone cream treatment group was significantly more effective than the treatment group (P＜0.05).All treatment patients did not present with tissue damage,pigmentation and other adverse reactions.Conclusions IPL combined with hydroquinone cream is a safe and effective treatment of melasma,and patients get a higher rate of satisfaction.

Objective To find the effects of varus degree on the early metabolic changes of the lateral compartment cartilage in knees with medial unicompartmental osteoarthritis by detecting glycosaminoglycan (GAG) in varus knees.Methods From June 2016 to December 2017,twenty middle-aged volunteers without osteoarthritis or coronal deformities were recruited as the control group.Sixty patients diagnosed as medial unicompartmental osteoarthritis were recruited as the osteoarthritis group.The patients were further divided into four groups according to the degrees of varus angle,namely 2°-5° varus group,5°-10° varus group,10°-15° varus group and ＞15° varus group with 15 patients in each group.Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) was performed in all participants.The dGEMRIC indices (T1Gd) representing GAG content were calculated in the weight-bearing femoral cartilage (wbFC),the posterior non-weight-bearing femoral cartilage (pFC),the lateral femoral cartilage (FC,wbFC+pFC) and the tibial cartilage (TC) in the lateral compartment by using Matlab 7.1 and MRIMapper software.Results T1Gd of wbFC,pFC,FC and TC were 400.3±51.5 ms,393.6±57.9 ms,397.5±52.3 ms and 448.6±62.5 ms in the control group,391.8±41.5 ms,407.2±43.8 ms,400.1±37.8 ms and 461.3±41.6 ms in 2°-5° varus group and 386.9±57.1 ms,401.3±73.5 ms,397.7±59.6 ms and 438.9±42.8 ms in 5°-10° varus group.There was no significant difference among the above three groups in T1Gd in any of the analyzed cartilage regions (P＞0.05).In 10°-15° varus group,T1Gd of wbFC,pFC,FC and TC were 380.1±45.5 ms,385.5±76.6 ms,384.0±53.5 ms and 400.2±43.8 ms,respectively.Although T1Gd of wbFC,pFC and FC in 10°-15° varus group were similar with that in the control group,2°-5° varus group and 5°-10° varus (P＞0.05),T1Gd of TC in 10°-15° varus group decreased significantly (P＜0.05).In addition,T1Gd of wbFC,pFC,FC and TC in ＞15° varus groupwere 327.7±54.3 ms,340.1±33.0 ms,334.9±36.0 ms and 363.6±48.6 ms,respectively.T1Gd of all regions of interest in ＞15° varus group were significantly lower than that informer four groups (P＜0.05).Conclusion In medial unicompartmental knee osteoarthritis,there is a relationship between varus degree and GAG content of the lateral compartment cartilage.If varus angle ≤10°,the GAG content of the lateral compartment cartilage was similar with the similar aged subjects without osteoarthritis.If varus angle ＞ 10°,GAG content of the lateral compartment decreases significantly.

Methomyl is a carbamate insecticide widely used in pesticides. Most of the poisoning methods are through digestive tract, respiratory tract and skin contact. At present, there is no report of poisoning caused by intramuscular injection. A case of poisoning caused by intramuscular injection of methomyl was analyzed retrospectively. About 4 minutes later, cholinergic crisis and central inhibition occurred. Venovenous-Extracorporeal Membrane Oxygenation (VV-ECMO) and atropine were given quickly. Finally, the patient was successfully rescued and had a good prognosis. After intramuscular injection of methomyl, cholinergic crisis can occur rapidly, and the onset rate is significantly faster than that of digestive tract, respiratory tract and skin contact.
Humans ; Retrospective Studies ; Methomyl ; Insecticides ; Pesticides ; Cholinergic Agents

To date, 205 compounds have been identified from different medicinal parts of Eucommia ulmoides, including lignans, iridoid terpenoids, phenols, flavonoids, terpenoids and steroids, polysaccharides and others. Their pharmacological effects include blood pressure-lowering, blood sugar-lowering, blood lipids-regulating, prevention of osteoporosis, anti-inflammation, liver protection, anti-cancer and so on. Their efficacy and mechanism from different parts are slightly different. In this paper, the chemical composition, pharmacological action and mechanism of different parts of E. ulmoides were systematically summarized, as well as its quality control and processing research, to provide theoretical basis for further rational development and utilization of E. ulmoides.
Eucommiaceae/chemistry* ; Flavonoids ; Iridoids ; Lignans ; Phenols ; Phytochemicals/pharmacology* ; Plants, Medicinal/chemistry* ; Polysaccharides ; Steroids ; Terpenes

Cinnamomum camphora is an important economic tree species in China. According to the type and content of main components in the volatile oil of leaf, C. camphora were divided into five chemotypes, including borneol-type, camphor-type, linalool-type, cineole-type, and nerolidol-type. Terpene synthase(TPS) is the key enzyme for the formation of these compounds. Although several key enzyme genes have been identified, the biosynthetic pathway of(+)-borneol, which has the most economic value, has not been reported. In this study, nine terpenoid synthase genes CcTPS1-CcTPS9 were cloned through transcriptome analysis of four chemical-type leaves. After the recombinant protein was induced by Escherichia coli, geranyl pyrophosphate(GPP) and farnesyl pyrophosphate(FPP) were used as substrates for enzymatic reaction, respectively. Both CcTPS1 and CcTPS9 could catalyze GPP to produce bornyl pyrophosphate, which could be hydrolyzed by phosphohydrolase to obtain(+)-borneol, and the product of(+)-borneol accounted for 0.4% and 89.3%, respectively. Both CcTPS3 and CcTPS6 could catalyze GPP to generate a single product linalool, and CcTPS6 could also react with FPP to generate nerolidol. CcTPS8 reacted with GPP to produce 1,8-cineol(30.71%). Nine terpene synthases produced 9 monoterpene and 6 sesquiterpenes. The study has identified the key enzyme genes responsible for borneol biosynthesis in C. camphora for the first time, laying a foundation for further elucidating the molecular mechanism of chemical type formation and cultivating new varieties of borneol with high yield by using bioengineering technology.
Cinnamomum camphora/enzymology* ; Alkyl and Aryl Transferases/chemistry*