Objective To express the plasminogen activator(Pla) of Yersinia pestis and one of its gene fragments,and to detect their immunological reactivity.Methods The pla gene and its specific gene fragment pla-c were amplified by PCR using the EV76 strain as a template.PCR products were then ligated with the plasmid pET32a (+).The recombinant plasmids pET32a (+)-pla and pET32a (+)-pla-c were subsequently trausformed into E.coli BL21 (DE3).The expressed products were purified by HIS affinity chromatography,and their immunological reactivity was detected by Western blotting.Results The recombinant Pla(52.8 × 103) was expressed as inclusion bodies,and the recombinant Pla-c protein (24.0 × 103) was expressed in the soluble form.These two recombinant proteins reacted with anti-Yersinia pestis EV76 rabbit sera.Conclusions The recombinant Pla and its specific fragments have displayed immunological reactivity,and can be served as an alternative diagnosis method for Yersinia pestis.

Background and purpose: Because of the aggressive nature of hilar cholangiocarcinoma and the absence of effective adjuvant therapy, surgical radical resection offers hilar cholangiocarcinoma patients the only choice. Research focus include preoperative assessment, the use of preoperative biliary drainage, the range of hepatic resection, and the range of lymphadenectomy. To investigate the clinical experience and efifcacy of combined hepatectomy in the treatment of hilar cholangiocarcinoma. Methods: Two hundred and seven patients with hilar cholangiocarcinoma treated surgically in the First Afifliated Hospital of Kunming Medical University form Jan. 2007 to Oct. 2013 were retrospectively analyzed. Results:Of the 207 patients, 125 patients who received radical resection (R0 resection) and the curative resection rate was 60.4%. One hundred and iffty-six cases were treated in combined hepatectomy group, 51 cases in non-hepatectomy group, the rate of R0 resection was 70.5%in hepatectomy group and 29.4%in non-hepatectomy group, and the difference was signiifcant (P<0.01). Two patients died perioperatively, the main postoperative complications included hepatic function insufifciency and bile leakage. One hundred and seventy-two patients were followed up, the median survival time of the 102 patients who received R0 resection was 45 months, and the 1, 3, 5 year survival rates were 96.1%, 59.1%and 17.2%. The median survival time of the 70 patients who received R1-2 resection was 26 months, and the 1, 3 year survival rates were 81.3%and 19.2%, and none of the patient survived for over 5 years. The survival rate of patients who received R0 resection was signiifcantly higher than those who received R1-2 resection (χ2=39.121, P<0.01). In the hepatectomy group was awarded the R0 resection in patients with postoperative 1, 3, 5 year survival rate was 97.8%, 63.9% and 18.0%, in non-hepatectomy group received R0 resection in patients with postoperative 1, 3, 5 year survival rate was 83.3%, 20.8%and 8.3%. There were signiifcant differences in the postoperative survival rate between both group (χ2=5.988, P=0.014). Conclusion:Radical excision is the key to improve the long term survival. Combined hemihepatectomy and standardized lymph node resection has signiifcantly improved the radical resection rate and the efifcacy of treatment for hilar cholangiocarcinoma.

Acupuncture Therapy ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Periarthritis ; physiopathology ; therapy ; Shoulder Joint ; injuries ; physiopathology ; Young Adult

Professor YU Shu-zhuang is a distinguished acupuncturist in China. He has practiced the TCM acupuncture-moxibustion clinical, educational and scientific research for 60 years in his life. In clinic, he summarized the experiences "five-ming first"; in treatment, he insisted "dredging" and "regulating", protecting the function of spleen and stomach, and needles should be less but specific. In the meanwhile, he made a deep study on the function and clinical effects of specific acupoints, and used the research results of propagated sensation along channel to guide clinical treatment, forming his special academic points. Professor YU has educated a great number of acupuncture-moxibustion talents in China and foreign countries, making great contribution to the popularization of acupuncture-moxibustion in the worldwide.
Acupuncture ; education ; history ; Acupuncture Points ; Acupuncture Therapy ; history ; China ; History, 20th Century ; History, 21st Century

BACKGROUND:Vertebroplasty and kyphoplasty for osteoporotic vertebral compression fractures can result in many complications, such as bone cement leakage and adjacent-level fractures.
OBJECTIVE:To verify the possibility of biodegradable mesh-like microporous polymer bal oon for the treatment of osteoporotic vertebral compression fractures.
METHODS:Biodegradable mesh-like microporous P(DLLA-CL) bal oons were fabricated by electrospinning technique. Coated bal oons with the same specification was fabricated by coating P(DLLA-CL) onto the same mould. Morphology of the bal oons was observed by scanning electron microscopy. The bal oon leakage was observed by eyes after the injection of water or cement. The initial strength and stiffness were measured by a universal testing machine. The proliferation of MC3T3-E1 cel s on the bal oons was determined by laser confocal microscope and cel counting kit-8 assays. The biodegradation of bal oons in simulated body fluid, porcine pancreatic lipase, and fresh human serum was studied by residual weighing and scanning electron microscopy observation. Burst pressure of bal oons was measured after the bal oon was placed into a hole in the vertebral bone. For the in vitro calcium release tests, the bal oons were fil ed with calcium cement, tied, placed into 6atm ultrapure water, and then the calcium concentration was regularly determined.
RESULTS AND CONCLUSION:Mesh-like microporous bal oons presented with good fiber morphology, thickness distribution, and the presence of pores;on the coated bal oon surface, there was absence of specific morphology and porosity. Compared with the coated bal oon, the mesh-like microporous bal oon showed better mechanical properties, liquid permeability and burst pressure, to prevent leakage of bone cement and promote osteoblast adhesion and proliferation. In addition, the degradation of the mesh-like microporous bal oons was more uniform and stable than the coated bal oons, which may increase the calcium concentration in the injured vertebrae and wil be beneficial to the new bone growth and fracture healing.

Adolescent ; Adult ; Female ; Humans ; Male ; Meridians ; Middle Aged ; Moxibustion ; Spondylitis, Ankylosing ; therapy ; Young Adult

BACKGROUND:It has become a focus to look for new vertebral body fil ing materials which have the biomechanical property, biological activity and low cement leakage rate.
OBJECTIVE:To investigate the biomechanical characters and cement leakage rate of the vertebral bodies implanted with biodegradable reticulated bal oon and calcium phosphate.
METHODS:Thirty-two vertebral bodies from pigs were randomly divided to four groups. For A group, 2.5-3.0 mL polymethacrylate cement was injected into the body through a unilateral thoracic pedicle pathway;for B group, 2.5-3.0 mL calcium phosphate cement were injected by the same protocol;for C group, the biodegradable reticulated bal oons fil ed with 2.5-3.0 mL calcium phosphate cement were implanted;D group, including normal vertebral bodies, was designed as controls. Leakage of bone cement was observed in each group. The load-shift curves were recorded by an electronic universal testing machine (SCHENCK RSA-250).
RESULTS AND CONCLUSION:The stiffness and strength of A group were significantly higher than those of D group (P<0.05), and the stiffness and strength of B group were statistical y lower than those of D group (P<0.05). The stiffness and strength of C group, otherwise, were similar with those of D group (P>0.05). Cement leakage rate of C group was lower than that of A or B group (P<0.05). Vertebral bodies implanted with biodegradable reticulated bal oons may lead to similar biomechanical characters as the normal vertebral bodies and reduce the cement leakage rate.

To reveal the effect of rotation cropping and bacterial manure on the growth of Chrysanthemum morifolium and screen the beneficial endophytic, the diversity of endophytic and dominant genera of different treatment groups were analyzed. Four different treatments were continuous cropping, rotation, self-made organic fertilizer and commercially available fertilizer, respectively. Endophytic bacterial diversity and dominant genera in different organs were examined using Terminal Restriction Fragment Length Polymorphism (T-RFLP). The results showed that enzyme Hae III was more appropriate than enzyme Hinfl because the number of TRFs digested by enzyme Hae III was more than that of enzyme Hinfl. In comparison of diversity, the endophytic bacterial communities' diversity index in group of cropping rotation and fertilizer was higher than that of continuous cropping which indicated that the addition of exogenous microorganism in soil could increase the diversity of plant endophyte. 18 dominant species were selected, including 3 kinds of Firmicutes, 4 kinds of Actinomycetes and 11 kinds of Proteobacteria. The results of dominant species comparison showed that the number of dominant species in continuous cropping of Ch. morifolium was significantly less than that of the rotation group. Some dominant bacteria in rotation group and fertilizer group such as Arthrobacter, Streptomyces, Streptomyces, Flavobacterium and Mycobacterium were not found in the continuous cropping of Ch. mortfolium group. Dominant species of fertilizer treatment group was similar with the rotation group, and the continuous cropping group's dominant species was more abundant. It indicates that these bacteria may be able to mitigate hindrance in continuous cropping, especially the Flavobacterium which can decompose the pathogenic fungi is worthy of further attention. Compared with leaves, there are more dominant species in roots and stems. The diversity of edophytic bacterial communities in continuous cropping of Ch. morifolium stays below than that in the rotation of Ch. morifolium, and fertilizer treatment can increase the diversity of continuous cropping so that it could mitigate hindrance in continuous cropping.
Actinobacteria ; physiology ; Agriculture ; Biodiversity ; Chrysanthemum ; growth & development ; microbiology ; Deoxyribonucleases, Type II Site-Specific ; Endophytes ; Fertilizers ; Gram-Positive Bacteria ; physiology ; Phylogeny ; Plant Leaves ; Plant Roots ; microbiology ; Polymorphism, Restriction Fragment Length ; Proteobacteria ; physiology ; RNA, Ribosomal, 16S ; chemistry ; genetics ; Soil ; Soil Microbiology

Objective To evaluate the safety and feasibility of laparoscopic left hepatectomy in patients with primary hepatic carcinoma. Methods Retrospective analysis was conducted in clinical data of left hepatectomy from 2007 to 2014,including 47 cases of laparoscopic hepatectomy and 46 cases of open hepatectomy. The intraoperative and postoperative data of the two surgical methods were compared to evalu-ate whether laparoscopic left hepatectomy is safe and feasible. Results The tumor size were bigger in the open hepatectomy [(56. 57 ± 24. 56) mm vs. (64. 11 ± 33. 39) mm,P=0. 218]. The laparoscopic left hepatectomy resulted in shorter operation time [(217. 53 ± 60. 22) min vs.(306.80±119.91)min],andtherewasasignificantlydifference(P<0.05).Theintraoperativebloodlosswerelesserinthelaparo-scopic left hepatectomy [(350. 21 ± 197. 98) mL vs. (556. 74 ± 471. 41) mL],and there was a significantly difference (P<0. 05). The lap-aroscopic left hepatectomy had a smaller intraoperative blood transfusion rate (12. 8% vs. 32. 6%,P<0. 05). The length of ICU stay,time for gastroentestinal function recovery, postopetative hospital stay were shorter than those of open left hepatectomy (P<0. 05). There was no significant difference of postoperative complication rate between them (14. 9% vs. 23. 9%,P=0. 271). The survival rates of 1-and 3-year after operation in patients with laparoscopic left hepatectomy were 91. 5% and 83. 0% respectively,while 84. 8% and 76. 1% in patients un-derwent open hepatectomy. The tumor-free survival rates 1-and 3-year after operation were 74. 5% and 59. 6% in patients with laparoscopic left hepatectomy respectively,while 65. 2% and 54. 3% in patients underwent open hepatectomy. Conclusion Laparoscopic left hepatectomy for primary hepatic carcinoma is safe and feasible. Laparoscopic left hepatectomy could be a consideration as the standard surgical methods for hepatic carcinoma.

Objective:To investigate the relationship between the distance from the upper and lower resection margin and the gastric cancer patients with R0 resection and no distant metastasis.Methods:Retrospective analysis of 281 patients with gastric cancer in our hospital,the relationship between the age,sex,tumor size,tumor size,vascular invasion,lymph node metastasis,TNM stage,type of gastric cancer,tumor location and operation mode was analyzed.To compare the survival time of patients with different upper and lower margins.Results:The increase of the distance from upper resection margin was significantly related to the tumor size＞5 cm,TNM stage,type of gastric cancer,tumor location,and the difference was statistically significant(P＜0.05);The distance of lower resection margin was significantly correlated with tumor size＞5cm,vascular invasion,lymph node metastasis and TNM stage,type of gastric cancer,and the difference was statistically significant (P＜0.05);Themedian survival timein patientsof upper resection marginr□3cm with 48 months of the 5-year follow-up period was significantly higher than that in patients of the resection margin＞3cmwith 46 months (P＜0.001).Themedian survival timein patientsof lower resection margin□3cm with 45 months of the 5-year follow-up period was significantly higher than that in patients of the resection margin＞3cm with 44 months (P＜0.001).Conclusion:Gastric cancer postoperative upper and lower resection margin was significantly related with tumor size,TNM staging factors,and the median survival time of upper and lower resection margin＞5 cm was significantly lower than that of the resection margin3 cm.