Aim To analyze the antibiotic activity and mechanism of a polypyridyl ruthenium complex. Meth-ods The antibacterial activity of [ ( Phen ) 2 Ru ( dp-pz) ] ( PF6 ) 2 was determined by MIC and MBC value. Based on a fluorescent activity of this complex, the flu-orescent emission spectra was used to analyze the com-bination of complex to DNA. Then the competition combination was analyzed between complex and Gold View to DNA. Lastly, gel electrophoresis of DNA was applied to detect the combination situation between complex and DNA. Results This kind of polypyridyl ruthenium complex showed a significant antibacterial activity with a minimum antibacterial conentration of 0. 2~0. 4 g · L-1 . That was caused by the combina-tion and distortion of DNA due to the activity of this complex. Conclusion The antibacterial activity and the mechanism of antibacterial activity about [ ( Phen) 2 Ru( dppz) ] ( PF6 ) 2 are confirmed in this re-search, which provides a good foundation for the devel-opment of such class of compound.

[Summary] This article reviewed the clinical features in two diabetes cases complicated with nasal‐brain mucormycosis by pathology and pulmonary mucormycosis. In one patient with diabetes combined with pulmonary mucormycosis ,manifestations of chest pain and hemoptysis ,the right upper lung biopsy tip morphology was consistent with Mucor ,successfully cured with amphotericin and operation treatment. The other patient with diabetes‐complicated nasal mucormycosis with headache and nasal cavity clump , showed black caseous matter ,finally hemiplegia. A nasal cavity tumor was proved by pathological examination. After treatment with fluconazole and operation ,the patientdied. Mucormycosisis rare and may be secondary to diabetes and hypoimmunity disease. It needs rapid diagnosis and treatment.

Acupuncture Therapy ; Adult ; Humans ; Male ; Myopathies, Structural, Congenital ; therapy

Objective To explore the treatment perscription with the method of integrated traditional and western medicine in type 2 diabetes.Methods With the methods of differential diagnosis of diseases in western medicine and differential symptoms and signs in traditional Chinese medicine(TCM),the diseases were separated into different patterns of syndrome and treated with propotional prescription of TCM.The curative effect was evaluated with the scores in the integration of symptoms and the changes on the levels of blood glucose and glycated-hemoglobin.Results Clinical curative effects were achieved using the prescription of TCM and the simple western medicines.The curative effects were much better on lowering integration of symptoms and the level of pre-meal blood glucose with the prescription of TCM than those of the simple western medicine.Conclusion The clinical curative effects are significant on relieving the clinical symptoms of patients with the prescription of TCM than those of the simple western medicine.

Objective To observe auditory brainstem response evoked at different electrode positions adopting electrode slices .Methods The ABRs of 12 normal guinea pigs (24 ears)were recorded by two methods using clicks as stimulation .Active electrode was positioned at the vertex while the ground electrode at the nose .The reference e‐lectrode was placed on bilateral pinnas or mastoids .Then observe waveforms ,response thresholds (RT) ,peak la‐tencies(PL) and inter-peak latencies (IPL)of ABR .Results No significant difference were observed in the RT ,Ⅰ ,Ⅱand Ⅲ PL ,Ⅰ - Ⅲ IPL of ABR between the two methods(P>0 .05) .When stimulation was decreasing and with the reference electrode slices placed at bilateral pinnas ,waveⅡpeak was stable and discernable of ABR record‐ings across twenty -four ears of guinea pigs .The amplitude decreased more slowly than any other waves ,and dis‐appeared at the last .While reference electrode slices were placed on bilateral mastoids ,the amplitude of wave Ⅲ de‐creased more slowly than any other waves except wave Ⅳ ,and disappeared at lost .Ⅱ - Ⅲ ,Ⅲ - Ⅳ IPL became shorter .These two positions both recorded amplitude higher and PL advanced for wave Ⅳ as the stimulation de‐creased by 20 to 40 dB nHL ,and Ⅲ - Ⅳ IPL became shorter .This phenomenon was more obvious when reference electrode was placed at mastoid .Conclusion Wave Ⅱwas more stable and discernible with reference electrode placed at the bilateral pinnas .Therefore wave Ⅱ recorded by this way can be a new method to record the ABR threshold of g uinea pig s .

Objective To observe the safety and effectiveness of high-dose chemotherapy(HDT) supported by autologous peripheral blood hematopoietic stem cells transplantation(APBHSCT) in the patients of terminal or relapsed malignant tumors.Methods The patients achieved CR or PR after 4 cycles of conventional salvage chemotherapy were divided into two groups randomly.26 patients in the research group were adapted APBHSC+HDC,50 patients in the control group were adapted 2～4 cycles of routine chemotherapy.Results In the research group,hematopoiesis was reconstructed in all patients,8 out of 17 patients who achieved PR after 4 cycles of conventional salvage chemotherapy turned into CR after APBHSC+HDC(CR rate 47.1%).In the control group,33 patients who achieved PR after 4 cycles of conventional salvage chemotherapy were still PR after 2～4 cycles of routine chemotherapy.The median survival period in the research group was 11 months,which was longer than the one in the control group.The survival rates of 2,3 and 4 years in the research group were evidently higher than the ones in the control group(P

As the rapid development of economy necessitates a large number of oil, the contradiction between energy supply and demand is further exacerbated by the dwindling reserves of petroleum resource. Therefore, the research of the renewable cellulosic biomass resources is gaining unprecedented momentum. Because xylose is the second most abundant monosaccharide after glucose in lignocellulose hydrolyzes, high-efficiency bioconversion of xylose becomes one of the vital factors that affect the industrial prospects of lignocellulose application. According to the research progresses in recent years, this review summarized the advances in bioconversion of xylose, which included identification and redesign of the xylose metabolic pathway, engineering the xylose transport pathway and bio-based chemicals production. In order to solve the energy crisis and environmental pollution issues, the development of advanced bio-fuel technology, especially engineering the microbe able to metabolize xylose and produce ethanol by synthetic biology, is environmentally benign and sustainable.
Bacteria ; genetics ; metabolism ; Escherichia coli ; genetics ; metabolism ; Ethanol ; metabolism ; Fermentation ; Fungi ; genetics ; metabolism ; Industrial Microbiology ; methods ; Metabolic Engineering ; Metabolic Networks and Pathways ; genetics ; Saccharomyces cerevisiae ; genetics ; metabolism ; Xylose ; metabolism

Objective:To explore the role of indoleamine-pyrrole 2,3-dioxygenase (IDO),an immunomodulatory enzyme,in renal cell carcinoma (RCC).Methods:A total of 40 patients diagnosed as RCC in the Second Xiangya Hospital were included in this study.All patients received nephrectomy.The histopathological features of samples were assessed semi-quantitatively.IDO mRNA level in RCC and non-RCC renal tissues was determined by real-time quantitative PCR (RT-qPCR).And the expression of IDO protein in endothelial cells was examined by immunohistochemistry; a Kaplan-Meier survival curves was calculated on the basis of IDO mRNA level.Results:Level of IDO mRNA in RCC samples was significantly higher than that in tumor-free samples with P＜0.001.Patients with high IDO expression had an significantly longer survival time than those with low IDO expression (P=0.01).There was a statistically significant inverse correlation between IDO and proliferation marker Ki67.Patients with high IDO level were of low Ki67 level,and vice versa (P＜0.01).Conclusion:IDO might be a prognostic biomarker for patients with RCC.

ObjectiveTo evaluate the discriminative stimulus effects of nicotine on the basis of a rat model of heroin discrimination.MethodsMale Sprague-Dawley rats were trained to discriminate 0.3 mg/kg heroin from saline under a fixed-ratio (FR10) schedule of food reinforcement.After training,different doses of heroin and nicotine were used to substitute for training dose of heroin,the dose-response curve for heroin and the discriminative stimulus effects of nicotine were identified in rats.ResultsAll rats reliably discriminated 0.3 mg/kg heroin from saline.Different doses of heroin ( 0.03,0.1,0.3,0.56 mg/kg ) produced ( 33.9 ± 15.0 ) ％,( 43.3 ± 13.3 ) ％,(98.7 ± 0.5 ) ％,(99.4 ± 0.2 ) ％ total responding on heroin associated lever,heroin at the doses of lower than 0.3 mg/kg produced the dose-dependent relationship in heroin-appropriate responding.In heroin-trained rats,nicotine at the dose of 0.03,0.1 mg/kg produced(1.9 ±1.1)％,(13.7 ±5.6)％ total responding on heroin associated lever,there were extremely significant differences with 0.3 mg/kg heroin control (P＜0.01).However,nicotine at the dose of 0.3,0.5 mg/kg produced ( 60.4 ± 16.1 ) ％,(65.9 ± 16.4) ％ total responding on heroin associated lever,there were no significant differences with 0.3 mg/kg heroin control (P＞ 0.05 ).ConclusionNicotine at the dose of 0.3,0.5 mg/kg can partially produce heroin-like discriminative stimulus effects.

Objective Hermaphroditic planarians possess a very important position in the systematic evolutionary history of animal, as they are capacity of complete regeneration. Hence, the research on histological structure of autofluorescence has been carried out to provide a crucial insight into the developmental and regenerative biology. Methods Part of histological structure of planarian (Dugesia japonica) was revealed with HE method, Masson method and Van Gieson method. Their autofluorescence was observed with ultraviolet. There were six planarians in each stained group and the autofluorescence group. Results Epidermis, outer epidermis of pharynx, protonephridium, intestine, the photoreceptor cells and longitudinal nerve cords, all radiated blue autofluorescence. The epithelial dissociation side of copulatory bursa radiated yellow autofluorescence, its middle part radiated blue autofluorescence, its fundus side radiated weakly blue autofluorescence. Testis could hardly give off autofluorescence. Pigment cells of eyepot could not give off autofluorescence. Conclusion The research on configuration and autofluorescence of planarian eye may offer help for the study of origin and evolutionary law on eye of invertebrate.