The interaction of Klebsiella mytoca NG13/pMC73A with Eucalyptus were studied. The results showed that the root surface and even the inner cortex of Eucalyptus were colonized by K. oxytoca. The K. oxytoca was reisolated from rhizosphere, root surface and inner root of inoculated Eucalyptus. The inoculation with K. oxytoca stimulated the excretion of Eucalyptus root and affected the contents of amino acids, carbohydrates, phytohormones of root exudates. The seedlings of Eucalyptusto to inoculation with K. oxytoca increased growth, total dry matter and N content by 29.81% - 100.40% after 3 months in comparinson to the uninoculated seedlings.

Long non-coding RNA (lncRNA) widely exists in living organisms.It,whose length is more than 200 bp,can regulate the genic expression in the epigenetic,transcriptional and post-transcriptional level.Therefore,it can influence cell proliferation,apoptosis,vitality,immune response and oxidative stress.In recent years,the study of lncRNA is developing rapidly in the ophthalmic research,and this article reviews the latest research progress on mechanism of lncRNA in the ophthalmology disease.

Objective To set up an effective and low-price way for enriching dendritic cells precursor from chronic myelogeous leukemia by Percoll density gradients.Methods Peripheral blood mononuclear cells(PBMCs) were collected by separation through Ficoll-Hypaque,then PBMCs were separated by 55% Percoll gradients. The cell type and DCs expressing CD1a,CD86 were detected in the high-density group(C),low-density group(B) and non-Percoll separation group(A).Results After separation of 55% Percoll,the percentage of promyelocytes and myelocytes in group B was obviously higher than those in group A and group C(P

The genetic indentification of 16S rDNA or ITS, capability of phosphate-solubilization and pH of medium, and optimization of medium of some microorganism isolated from mangrove were investigated in this study. The result showed that the fungi normally had much higher capacity to dissolve the inorganic phosphate than the bacteria, the capacity of the fungi was closely correlated to the pH of medium, but the relationship was weak for the bacteria. It was illustrated by single factor experiments that the optimal carbon and nitrogen sources were maltose and urea respectively. The orthogonal design was employed in testing the optimum composition of medium composed of 5 g/L maltose, 0.05 g/L urea, 5 g/L NaCl, pH 5. In this optimal medium, the effectively enrichment of bacteria could reach up to 6.06?109 CFU/mL under 30?C for 48 hours cultivation.

AIM: To explore the significance of platelet activation, fibrinolytic activity and the changes of vasoactive mediators in acute myocardial infarction in rabbits and the intervention of amiodarone and metoprolol. METHODS: Fifty New Zealand white rabbits were randomly assigned to five groups, ten for each. Group Ⅰ: sham group, group Ⅱ: acute myocardial infarction(AMI) group, group Ⅲ: AMI and lidocaine group, group Ⅳ: AMI and amiodarone group, group Ⅴ: AMI and metoprolol group.The middle point of left ventricular coronary artery was ligated (groupⅡ,Ⅲ, Ⅳ and Ⅴ ) or a sham ligation(group Ⅰ). Four hours later, blood was collected for measuring plasma concentration of TXB 2, 6-Keto-PGF 1?, ET, NO, plasma activity of t-Pa and PAI.After that, the heart was taken out to evaluate the infarction size(IS). RESULTS: Plasma concentration of TXB 2, ET, NO and plasma activity of PAI were significantly higher in groupⅡ,Ⅲ, Ⅳ and Ⅴ than those in group Ⅰ(P0.05).Compared to group Ⅱ, plasma concentration of ET, NO and PAI activity were significantly decresed (P

ObjectiveTo determine the changes in tumor necrosis factor-α (TNF-α) and interleukin-lβ (IL-1β)expression after bone marrow mesenchymal stem cells (BMSCs) transplantation in a rat pup model of hypoxic-ischemic brain damage (HIBD) and discuss the anti-inflammatory mechanism of BMSCs transplantation in the repair of HIBD.MethodsThree-day-old Sprague-Dawley rat pups were randomly divided into three groups: the transplantation group, in which a model of HIBD was established by ligation of left common carotid artery and hypoxia for two hours followed by the injection of 2μl BMSCs (2×105 cells) into the lateral ventricle; the HIBD model group, in which HIBD model was established and 2μl phosphate saline buffer was injected into the lateral ventricle; and the sham-operation group, in which no intervention was given. Histological changes in the brain were detected by HE staining and the number of cells positive for ectodermal dysplasia-1 (ED-1) staining, which is a specific marker for activated microglia, was detected by immunohistochemistry. The protein and mRNA levels of TNF-α and IL-1β were determined by enzyme-linked immunosorbent assay and reverse transcription-polymerase chain reaction. One-way analysis of variance and LSD test were applied for statistical analysis.ResultsHE staining showed that cellular edema and necrocytosis was not observed in cerebral white matter on the 7th post-transplantation day in the transplantation group, but observed in the HIBD model group. In the sham-operation group, cerebral white matter was normal. The number of ED-1 positive cells in the transplantation group (26.3±2.5) was significantly lower than that in the HIBD model group (33.0±4.0), but higher than that in the sham-operation group (2.3±0.6) (LSD test, allP<0.05). The contents of TNF-α and IL-1β both in the transplantation group and the HIBD model group increased and peaked 24 h after transplantation, then gradually decreased, but did not reach normal levels (sham-operation group) on the 7th day. The contents of TNF-α and IL-1β in brain tissue in the HIBD model group [TNF-α: (3.03±0.10), (5.57±0.19), (7.78±0.19), (4.39±0.20), (2.70±019)μg/L; IL-1β:(293.1±7.9), (369.8±17.5), (303.6±23.9), (226.7±21.6), (183.9±33.4) ng/L] were significantly higher than those in the transplantation group [TNF-α: (2.84±0.20), (3.80±0.14), (4.63±0.17), (3.56±0.03), (1.99± 0.17)μg/L; IL-1β: (267.6±14.5), (323.5±26.9), (211.2±24.9), (140.8±7.4), (100.2±8.3) ng/L] at 6, 12, 24, 48 h and 7 days after BMSCs transplantation, respectively. The contents of TNF-α and IL-1β in the sham-operation group [TNF-α:(1.03±0.02), (1.13±0.03), (1.05±0.02), (1.09±0.02), (1.07±0.02)μg/L; IL-1β:(63.6±13.0), (64.0±11.3), (60.8±10.0), (67.9±13.5), (66.2±11.7) ng/L] were significantly lower than those in the transplantation group and HIBD model group (LSD test, allP<0.05). TNF-α and IL-1β mRNA at 24 h after transplantation in the HIBD model group (TNF-α: 2.69±0.43; IL-1β: 3.07±0.38) were significantly higher than those in the transplantation group (TNF-α: 1.61±0.29; IL-1β: 1.08±0.11) and those in the sham-operation group (TNF-α: 0.94±0.16; IL-1β: 1.08±0.11) (LSD test, allP<0.05).ConclusionsBMSCs may play an important role in the recovery of preterm HIBD and the mechanism may involve the inhibition of microglia activation and down-regulation of the expression of inflammatory factors.

Objective To investigate the mechanism related to reduced antibiotic sensitivity of Acinetobacter baumannii inducted by meropenem in vitro.Methods Three strains of clinically isolated carbapenems-sensitive Acinetobacter baumannii were induced by meropenem in vitro, and the mutant strains (MS1, MS2 and MS3) were obtained.Minimal inhibitory concentrations (MICs) of antimicrobial agents to strains before and after induction were determined by automatic drug sensitivity analyzer .The homology of strains was analyzed by Enterobacterial repetitive intergenic consensus -polymerase chain reaction ( ERIC-PCR).Modified Hodge test and EDTA-Na2-double disk synergy test were used to detect carbapenemase and metallo-β-lactamase (MBL), respectively.Main carbapenemase genes were detected by PCR and followed by DNA sequencing.Expressions of adeB and outer membrane proteins in strains before and after induction were detected with fluorescence quantitative PCR and SDS -polyacrylamide gel electrophoresis , respectively.t test was used for data analysis .Results The sensitivity of mutant Acinetobacter baumannii strains to meropenem and most antibiotics was reduced , except to imipenem, amikacin and polymyxin; and the reduced sensitivity to meropenem in MS2 and MS3 was of genetic stability.ERIC-PCR showed 100%homology between the mutant strains and parental strains .Both carbapenemase and metallo -β-lactamase were negative in mutant strains and parental strains , and only OXA-51 gene was found.The expressions of adeB gene in mutant strains were 24.26 ±0.91, while those in parental strains were 22.81 ±0.38, and the difference was not significant (t =2.534, P >0.05).Outer membrane protein with molecular weight 54 000 was missing in MS1, while that with molecular weight 47 000 was missing in MS2 and MS3.Conclusion Reduced antibiotics sensitivity in meropenem -induced Acinetobacter baumannii may be correlated with the deficiency of outer membrane protein with molecular weight 47 000.

Objective To analyze the epidemiological characteristics of brucellosis for improving its clinical and laboratory diag‐nostic ability .Methods The clinical and laboratorial data of the patients with brucellosis in our hospital from January 2013 to Sep‐tember 2015 were retrospectively analyzed .Results In 39 cases of brucellosis ,the majority had the sheep‐contacting history and the clinical manifestations were mainly fever (100 .0% ) ,bone and joint pain(64 .1% ) ,hidrosis(51 .3% ) ,weak(33 .3% ) ,lymph node en‐largement(23 .1% ) and hepatosplenomegaly(12 .8% ) .The laboratory detections showed the abnormal liver function ,rapid erythro‐cyte sedimentation rate(ESR) ,hypersensitive C ‐ reactive protein(hs‐CRP)increase ,lymphocytes percentage increase ,positive for brucellosis antibody agglutination test ,positive blood culture or medulloculture ,which was identified as Brucella melitensis by bacte‐riology .Conclusion The clinical manifestations of brucellosis are diversity and is easy to be misdiagnosed .The sporadic cases in northern Jiangsu area are increased year by year .The epidemiological clue should be paid attention to and the recognition on brucel‐losis should be strengthened .The patients with fever of undetermined origin should be conducted the blood culture and brucellosis antibody agglutination test as early as possible .

Objective To identify the drug resistance-related genes in a clinically isolated strain of Enterobacter cloacae.Methods A strain of Enterobacter cloacae was isolated from sputum of a patient with chronic obstructive pulmonary disease from the Affiliated Hospital of Xuzhou Medical University in March 2013.Modified Hodge test and metal enzyme inhibition test were performed for drug-resistant phenotype screening.Carbapenemase genes blaMUS-1, blaVIM-1, blaVIM-2, blaIMP, blaKPC-2, blaNDM-1, blaOXA-48 and blaGESwere amplified by polymerase chain reaction (PCR), and the positive products were sequenced and analyzed.Plasmid conjugation and transformation experiments were used to confirm that the resistance gene mediated by plasmids.Agar dilution method was used for antibiotic susceptibility test.Results Both modified Hodge test and metal enzyme inhibition test were positive in this strain of Enterobacter cloacae.blaNDM-1 gene and blaKPC-2 gene were detected by PCR, and further confirmed by sequencing.blaNDM-1 gene was carried by IncX plasmid with 54×103 bp, KPC-2 gene was carried by untyping plasmid with 42×103 bp.The strain was only sensitive to tetracycline (MIC=2 μg/mL) and tigecycline (MIC=1 μg/mL).The symptoms were improved after the patient was treated by tigecycline combined with Piperacillin/Tazobactam.Conclusion blaNDM-1 and blaKPC-2 genes in Enterobacter cloacae can be mediated by plasmids, and appropriate therapy for its infection should be based on the result of antibiotic susceptibility test.

Objective To evaluate the efficacy and safety of bortezomib-based chemotherapy and MPT regimen in the MM patients who were newly diagnosed or relapsed/refractory. Methods Twenty-seven MM patients were treated with bortezomib-based chemotherapy, median cycles:3 (range 1-5 cycles). Other 30patients received MPT chemotherapy. EBMT and WHO criteria were used to evaluate the therapeutic effects and the adverse effects, respectively. Results Bortezomib group: 21 patients (77.8 %) showed effects after the first cycle chemotherapy and 24 patients (88.8 %) showed effects after the whole therapy. In wich, 15 patients(94.0 %) and 9 patients (82.0 %) were newly diagnosed and relapsed/refractory, respectively. MPT group: 15patients (50.0 %) showed effects after the whole therapy. In wich, 12 patients (44.0 %) were newly diagnosed.And the other 3 were relapsed/refractory patients. The ORR in Bortezomib group was better than MPT group (P ＜0.05). The incidence of peripheral neuropathy, herpes and Ⅲ - Ⅳ grade thrombocytopenia in the bortezomib group was 10 patients (37.0 %), 7patients (26.0 %), 10 patients (37.0 %) respectively,and they were more common than MPT group, but the incidence of Ⅲ-Ⅳgrade anemia was 21 patients (70.0 %) and more comumom in the MPT group. The theraputic efficacy of bortezomib for renal insufficiency and normal renal function patients was similar, and no significant increase in all kinds of adverse effects. In MPT group,there were 4 patients with renal insufficiency, the serum level of creatinine in the 3 patients returned to normal after 5 cycles therapy. Conclusion Bortezomib-based chemotherapy is more effective than MPT regimen in the treatment of MM. The newly diagnosed, relapsed/ refractory and with renal insufficiency patients all can benefit from it. The adverse effects are mild and with better tolerance.