3.Advances in the Isolation Methods of Fungal Polyketide Synthase Genes
Shao-Hua YAN ; Liang GUO ; Yan-Ping LI ; Yang XU ;
China Biotechnology 2006;0(07):-
Fungal polyketide synthases are responsible for the biosynthesis of secondary metabolites such as pigments, mycotoxins, and they are very important in pharmacology , food science and agriculture. The recent advances in the methods for the isolation and manipulation of multiple classes of polyketide synthase genes from fungi were introduced. It is useful for discovery of novel fungal polyketide synthase gene clusters. These methods can also be useful for revealing the genetic potential of fungi to produce multiple types of bioactive polyketide.
5.Structure relationship of nitrochlorobenzene catalytic degradation process in water over palladium-iron bimetallic catalyst.
Shao-feng NIU ; Hong-yi ZHOU ; Xu-ping AO ; Xin-hua XU ; Zhang-hua LOU
Journal of Zhejiang University. Science. B 2006;7(7):548-552
Two isomers of nitrochlorobenzene (o-, and p-NCB) were treated by a Pd/Fe catalyst in aqueous solutions through catalytic amination and dechlorination. Nitrochlorobenzenes are rapidly converted to form chloroanilines (CAN) first through an amination process, and then rapidly dechlorinated to become aniline (AN) and Cl(-), without the involvement of any other intermediate reaction products. The amination and dechlorination reaction are believed to take place predominantly on the surface site of the Pd/Fe catalysts. The dechlorination rate of the reductive degradation of the two isomers of nitrochlorobenzene (o-, and p-NCB) in the presence of Pd/Fe as a catalyst was measured experimentally. In all cases, the reaction rate constants were found to increase with the decrease in the Gibbs free energy (correlation with the activation energy) of NCBs formation; the activation energy of each dechlorination reaction was measured to be 95.83 and 77.05 kJ/mol, respectively for o- and p-NCB. The results demonstrated that p-NCBs were reduced more easily than o-NCBs.
Catalysis
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Industrial Waste
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prevention & control
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Iron
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chemistry
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Isomerism
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Kinetics
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Metals
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chemistry
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Nitrobenzenes
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chemistry
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Palladium
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chemistry
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Structure-Activity Relationship
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Waste Disposal, Fluid
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methods
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Water
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chemistry
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Water Purification
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methods
6.IL15 DNA adjuvant enhances cellular and humoral immune responses induced by DNA and adenoviral vectors encoding HIV-1 subtype B gp160 gene.
Ke XU ; Shao-Hua XU ; Xia FENG ; Shuang-Qing YU ; Yi ZENG
Chinese Journal of Virology 2014;30(1):62-65
To enhance the immunogenicity of DNA and adenoviral vector vaccines expressing HIV-1 subtype B gp160, human interleukin 15 (hIL15) DNA adjuvant (pVR-hIL15) was constructed. BALB/c mice received DNA prime/protein boost immunization with pVR-HIVgp160/Ad5-HIVgp160 alone or combined with pVR-hIL15. Cellular and humoral immune responses were evaluated by IFN-gamma enzyme-linked immunosorbent spot assay and enzyme-linked immunosorbent assay, respectively. Compared with those immunized with vaccines alone, the mice immunized with vaccines combined with pVR-hIL15 had significantly increased specific cellular response and antibody titer (P < 0.05). It suggests that the IL15 DNA adjuvant can enhance the immune responses induced by prime-boost regimen using DNA and adenoviral vector encoding HIV-1 subtype B gp160.
Adenoviridae
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genetics
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Adjuvants, Immunologic
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Animals
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Antibodies, Viral
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immunology
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Antibody Specificity
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Female
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Genetic Vectors
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genetics
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HIV Envelope Protein gp120
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immunology
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HIV Envelope Protein gp160
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genetics
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immunology
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HIV Envelope Protein gp41
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immunology
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Humans
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Immunity, Cellular
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Immunity, Humoral
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Interleukin-15
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genetics
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Mice
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Mice, Inbred BALB C
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Vaccines, DNA
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genetics
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immunology
7.Surgical treatment for posterior Pilon fracture through posterolateral approach.
Shao-hua JIA ; Cheng-long HUANG ; Hong-wei XU ; Sui-liang GONG
China Journal of Orthopaedics and Traumatology 2016;29(6):557-560
OBJECTIVETo explore clinical results of open reduction and internal fixation (ORIF) for posterior Pilon fracture through posterolateral approach.
METHODSSeventeen patients with posterior Pilon fracture were treated through posterolateral approach from February 2010 to April 2013. Among them,including 11 males and 6 females aged from 29 to 59 with an average of 43.4 years old. All fractures were associated with more than 20% of articular surface of distal tibial. The causes of injury included falling down (11 cases), traffic accident (4 cases) and sports injury(6 cases). Fracture classification was based on posterior pilon fracture by YU Guang-rong, including type I (6 cases), type II (2 cases) and type III (6 cases). Fracture healing time, fracture reduction and postoperative complications were observed, AOFAS score were applied to evaluate clinical efficacy.
RESULTSAll patients were followed up from 13 to 24 months with an average of 20.5 months. All incisions were healed at stage I, and fractures obtained healing,the time of fracture healing ranged from 12 to 21 weeks with an average of 15.2 weeks. No incision infection, neurovascular injury, bone ununion and fracture deformity were found after operation. Postoperative AOFAS score was 92.0 ± 10.2, and 14 cases got excellent results, 2 good and 1 moderate.
CONCLUSIONPosterior pilon fracture through posterolateral approach could obtain effective reduction, stable fixation. It is a safe, simple and effective operation for treating posterior Pilon fracture, and it is worth popularizing.
Adult ; Ankle Fractures ; surgery ; Ankle Joint ; surgery ; Female ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery
8.Ifosfamide and vinorelbine combined chemotherapy in the treatment of advanced non-small cell lung cancer
Yi LAO ; Shao-Feng CHEN ; Gui-Hua LEI ; De-Ming XU ; Wei WANG ; Hai-Ming ZHONG ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(08):-
Objective To evaluate therapeutic effects and toxicity of advanced non-small cell lung cancer (NSCLC)treated by combining chemotherapy on ifosfamide(IFO)and vinorelbine(NVB).Methods 107 cases pa- tients with advanced NSCLC were enrolled.IFO was given in a dosage of 1.5g/m~2 on day 1 to 4.and NVB in a dosage of 25mg/m~2 on day 1 and 8.It was repeated every three or four weeks,up to two to four cycles.Results Two patients had complete response and 40 patients had partial response.The overall response rate was 47.7% ,the median survival time 10.3 months,1-year and 2-year survival rate was 42% and 12.3%,respectively.The main toxicity was bone marrow suppression.Conclusion The regimen is effective,sale and tolerable in advanced non- small cell lung cancer therapy.
9.Magnetic resonance cholangiopancreatography to analyze the risk factor before laparoscopic cholecystectomy
Hao TANG ; Chuxiao SHAO ; Yonghong XU ; Xiaoxi FAN ; Feng CHENG ; Hua DONG
Chinese Journal of Digestive Endoscopy 2009;26(2):76-78
Objective To assess the diagnostic value of MRCP before LC.Methods 944 cases with chronic calculous cholecystitis underwent MRCP before LC from June 2004 to June 2007 in our department.incidence rate of cholecvstolithiasis together with common bile duct stones and incidence rate of anatomic abnormity of bile duct were collected.Results The incidence rate of cholecvstolithiasis together with common bile duct stones were 8.1%(77/944),and the oecurence ofACBDS were 1.2%(11/944).The incidence rate of anatomic abnormity of bile duct were 3.7%(35/944).ConclusionMRCP can not only offer a excellent diagnostic value of ACBDS and anatomic abnormity of bile duct,but also reduce the occurrence of CBDS remainder and iatrogenic bile duct iniuries.
10.Epidemiological characteristics of Mycoplasma pneumoniae infection in hospitalized children in Suzhou from 2007 to 2013
Shenghao HUA ; Xuejun SHAO ; Ping HE ; Ying JIN ; Jian JI ; Jun XU
International Journal of Laboratory Medicine 2015;(18):2638-2639,2642
Objective To investigate status and epidemiological characteristics of Mycoplasma pneumoniae (MP) infection in hospitalized children with respiratory tract infections from 2007 to 2013 in Suzhou region .Methods MP was determined by fluores‐cence quantitative polymerase chain reaction(PCR) in 34 332 sputum specimens of hospitalized children with respiratory tract infec‐tions in the Children′s Hospital Affiliated to Soochow University from 2007 to 2013 .Results The total detection rate of MP was 19 .01% in children with respiratory tract infections in Suzhou from 2007 to 2013 .Annual MP infection rates from 2007 to 2013 were 5 .45% ,6 .95% ,14 .06% ,18 .51% ,4 .85% ,25 .94% and 28 .68% respectively ,among which the infection rates of MP in 2012 and 2013 were significantly higher than that in other years (P<0 .05) .The infection rates of MP in female children(21 .01% )was higher than that in male children(17 .81% ) ,there was statistically significant difference(P<0 .05) .The infection rates of MP in children <1 years old ,1- <4 years old ,4- <7 years old and 7-14 years old were 8 .88% ,18 .05% ,35 .28% and 52 .39% respec‐tively ,and significant differences of infection rates of MP were observed among the age groups(P<0 .05) .The infection rates of MP in spring ,summer ,autumn and winter were 15 .96% ,28 .38% ,21 .71% and 11 .01% respectively ,and significant differences of in‐fection rates of MP were observed among the seasons(P<0 .05) .Conclusion MP is one of the most common pathogens responsible for respiratory tract infection in children ,which shows gender ,age and season differences in infection rate .Children aged 7 to 14 years old are susceptible to be infected by MP in summer and autumn ,especially in July and August ,so it is necessary to strengthen the prevention of MP infection .