Objective To investigate the effect of modified Huangqi-Jianzhong decoction on healing quality of gastric ulcer in rats and to explore its mechanism. Methods 40 Wistar rats were randomly divided into a normal group, a model group, a modified Huangqi-Jianzhong decoction group and a omeprazole group (n=10) according to the random number table method. These rats were used to model of chronic gastric ulcer induced by acetic acid 100%. On third day after surgery, the rats in the modified Huangqi-Jianzhong decoction group were treated with 10% of the modified Huangqi-Jianzhong decoction according to the dose of 20 ml per kilogram of body weight. The rats in the omeprazole group were treated with a 3% omeprazole suspension according to the of 20 ml per kilogram of body weight. The rats in the normal group and the model group were treated with the same volume of saline. After treated with corresponding treatment for 16 days, the gastric mucosa pathology, ulcer index, regenerative mucosal thickness, mucosal surface mucus thickness, muscularis mucosal layer width of the defect, cystically dilated glands number and level of serum prostaglandin (6-K-PGF1α), epidermal growth factor (EGF), nitric oxide (NO) were observed. Results Compared with the model group, the rat ulcer index (8.95 ± 2.78 mm2 vs. 20.82 ± 5.12 mm2), mucosal muscularis defect width (123.56 ± 32.89 μm vs. 229.32 ± 49.69 μm), cystic glandular expansion (1.65 ± 0.76 vs. 6.12 ± 1.23) were lower in the modified Huangqi-Jianzhong decoction group (P<0.01). Thickness of regenerated mucosa (329.55 ± 32.22 μm vs. 198.22 ± 5.83 μm), the surface thickness of mucus (44.3 ± 2.8 μm vs. 24.5 ± 7.8 μm), serum 6-K-PGF1α (93.7 ± 8.9 pg/ml vs. 58.5 ± 5.8 pg/ml), EGF (2.11 ± 0.29 ng/L vs. 0.82 ± 0.20 ng/L) , NO (0.51 ± 0.03 μmol/L vs. 0.22 ± 0.05 μmol/L) was higher (P<0.01). In addition to the ulcer index, other each target improvement flavored were better in the modified Huangqi-Jianzhong decoction group than in the omeprazole group (P<0.05). Conclusion Modified Huangqi-Jianzhong decoction can improve the quality of ulcer healing by promoting gastric mucosa ulcer repair, reducimg ulcer index, mucous muscularis layer defect width and cystic glandular expansion and improving the thickness of regenerative mucosa, mucosal surface mucus thickness and cyst, EGF, NO level and thus improve the experimental gastric ulcer healing quality.

Objective To investigate transmission routes of healthcare-associated infection(HAI)caused by methi-cillin-resistant Staphylococcus aureus (MRSA),and make effective measures for preventing and controlling the oc-currence and epidemic of HAI caused by multidrug-resistance bacteria.Methods From February 24 to March 29, 2012,12 MRSA-infected patients were performed epidemiological study,these patients underwent bronchoscopy be-cause of tracheal stenosis,strains were identified by amplifying the sequences of 16S rRNA ,femA and mecA with real-time quantitative polymerase chain reaction (PCR),homology analysis of strains were performed by Spa geno-typing.Results All 12 MRSA-infected patients were susceptible to multidrug-resistance bacterial infection,5 cases of MRSA infection occurred during this hospitalization.Detection of specimens from health care workers and envi-ronment were all negative;Spa gene of all 12 MRSA isolates was type t 030 ,which was the main epidemic strain in Asia;Spa gene of Staphylococcus aureus isolated from nurses’noses was type t1425 .Conclusion The assumption of MRSA spread among health care workers aren’t supported by the epidemiological investigation results,genotypes of 12 MRSA isolates are identical,but the result of gene typing can’t be as the evidence of homology of infection ;patients at high risk for MRSA infection should be screened as early as possible,early contact isolation should be performed,so as to prevent and control the occurrence of HAI.

Objective The purpose of the study was to investigate the changes and clinical significance of matrix metalloproteinase (MMP)-1,MMP-3,tissue inhibitor of metalloproteinase (TIMP),interleukin (IL)-1,tumor necrosis factor (TNF)-α and transforming growth factor(TGF)-β in juvenile idiopathic arthritis (JIA).Methods Thirty-two JIA subjects and 28 controls (traumatic arthritis patients) were included into this study.The MMP-1,MMP-3,TIMP,IL-1,TNF-α and TGF-β level in the serum and synovia were assessed by ELISA.The WBC count,the level of CRP,ESR,RF were also detected.Independent t-test and Pearson's analysis were adopted for data analysis.Results ① The level of MMP-1,MMP-3,IL-1 and TNF-α in the serum was (158±67) ng/ml,(212±89) ng/ml,(39±19) pg/ml,(26±10) pg/ml respectively,which was significantly higher than that of the control group (all P＜0.05) ; the ratio of MMP-3/TIMP-1 (0.86±0.32) was higher in the study group than that of the control group (P＜0.05),while the value of TIMP-1,TGF-β was (248±88),(17±9) ng/ml respectively,which was lower than that of the control group (P＜0.05).The value of seral MMP-3,MMP-3/TIMP-1 was positively correlated with that of WBC,CRP,ESR in the JIA group (all P＜0.05).② The value of MMP-1,MMP-3,IL-1 and TNF-α in the synovia was (216±78) ng/nl,(766±291)ng/ml,(56±21) pg/ml,(36±14) pg/ml respectively,which was higher than that of the control group (all P＜0.05); the ratio of MMP-3/TlMP-1 (2.68±0.89) was higher than that of the control group (P＜0.05),while the value of TIMP-1,TGF-β was (286±88) ng/ml,(12±4) ng/ml respectively,which was lower than that of the control group (all P＜0.05).③ The value of MMP-1,MMP-3,TIMP-1,IL-1 and TNF-α in the synovia was higher than that in the serum (all P＜0.05),while the value of TGF-β was lower than that in the serum (P＜0.05).Conclusion The value of MMP-1,MMP-3,IL-1 and TNF-α increases both in the serum and synovia,while the value of TIMP-1 decreases.The value of TGF-β decreases,which may have protective effect on JIA.The ratio of MMP-3/TIMP-1 in the serum is positively correlated to inflammation parameters,which may be used to judge the activity of illness in JIA.

Objective:To investigate the efficiency and pharmacoeconomics of pegylated recombinant human granulocyte colony-stimulating factor (PEG-rhG-CSF) for mobilization of peripheral blood stem cells (PBSCM) in patients with multiple myeloma (MM).Methods:The data of 91 patients with newly treated MM who were hospitalized in the First Hospital of Jilin University and Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College from January 2015 to October 2017 were retrospectively analyzed. According to the patient's wishes, a high-dose chemotherapy combined with subcutaneous injection of PEG-rhG-CSF or recombinant human granulocyte colony-stimulating factor (rhG-CSF) was used for stem cell mobilization in 42 and 49 patients, respectively. The number of mononuclear cells (MNC) and CD34 + cells collected after mobilization, the maximum absolute neutrophil count (mANC), the cost of mobilization, and the engraftment time of white blood cells and platelets after transplantation were compared between the two groups. Results:The median number of MNC collected after mobilization in the PEG-rhG-CSF group and rhG-CSF group were 5.86×10 8/kg [(1.08-24.54)×10 8/kg] and 6.61×10 8/kg [(0.83-33.80)×10 8/kg], and the difference was not statistically significant ( U = 883.00, P = 0.245); while the median number of CD34 + cells collected after mobilization in the PEG-rhG-CSF group was higher than that in the rhG-CSF group [5.56×10 6/kg (0.94-19.90)×10 6/kg and 4.82×10 6/kg (1.12-14.61)×10 6/kg], and the difference was statistically significant ( U = 732.00, P = 0.038). The median number of mANC during mobilization in the PEG-rhG-CSF group was lower than that in the rhG-CSF group [20.50×10 9/L (7.26-61.30)×10 9/L and 32.08×10 9/L (6.92-69.99)×10 9/L], and the difference was statistically significant ( U = 490.00, P = 0.001). After autologous stem cell transplantation (ASCT), the time-to-recovery of white blood cell count (WBC) to 1.0×10 9/L in the PEG-rhG-CSF group was shorter than that in the rhG-CSF group [(11.59±1.98) d vs. (12.93±2.83) d], and the difference was statistically significant ( t = -2.395, P = 0.019), and the time-to-recovery of platelet count (Plt) to 20.0×10 9/L in the PEG-rhG-CSF group was also shorter than that in the rhG-CSF group [(12.86±2.62) d vs. (14.80±5.47) d], but the difference was not statistically significant ( t = -1.749, P = 0.085). The total mobilization cost of the PEG-rhG-CSF group was not statistically different from that of the rhG-CSF group [(21 405.47±7 365.98) yuan vs. (22 976.83±10 264.34) yuan, t = -0.721, P = 0.474]. Conclusions:PEG-rhG-CSF combined with high-dose chemotherapy is an effective option for PBSCM in MM patients, and its mobilization cost is equivalent to rhG-CSF. Therefore, PEG-rhG-CSF may be a better choice for PBSCM in MM patients.

Amino Acid Metabolism, Inborn Errors ; diagnosis ; genetics ; therapy ; Death, Sudden ; etiology ; Hereditary Central Nervous System Demyelinating Diseases ; diagnosis ; etiology ; Humans ; Hydroxymethylglutaryl-CoA Synthase ; deficiency ; Infant, Newborn ; Male ; Mutation ; Oxo-Acid-Lyases ; genetics ; Spectrometry, Mass, Electrospray Ionization ; Tandem Mass Spectrometry

AIK is a novel cationic peptide with potential antitumor activity. In order to construct the AIK expression vector by Gateway technology, and establish an optimal expression and purification method for recombinant AIK, a set of primers containing AttB sites were designed and used to create the AttB-TEV-FLAG-AIR fusion gene by overlapping PCR. The resulting fusion gene was cloned into the donor vector pDONR223 by attB and attP mediated recombination (BP reaction), then, transferred into the destination vector pDESTl 5 by attL and attR mediated recombination (LR reaction). All the cloning was verified by both colony PCR and DNA sequencing. The BL21 F. coli transformed by the GST-AIR expression plasmid was used to express the GST-AIK fusion protein with IPTG induction and the induction conditions were optimized. GST-AIR fusion protein was purified by glutathione magnetic beads, followed by rTEV cleavage to remove GST tag and MTS assay to test the growth inhibition activity of the recombinant AIR on human leukemia HL-60 cells. We found that a high level of soluble expression of GST-AIK protein (more than 30% out of the total bacterial proteins) was achieved upon 0.1 mmol/L ITPG induction for 4 h at 37 °C in the transformed BL21 F. coli with starting OD₆₀₀ at 1.0. Through GST affinity purification and rTEV cleavage, the purity of the resulting recombinant AIK was greater than 95%. And the MTS assays on HL-60 cells confirmed that the recombinant AIK retains an antitumor activity at a level similar to the chemically synthesized AIK. Taken together, we have established a method for expression and purification of recombinant AIK with a potent activity against tumor cells, which will be beneficial for the large-scale production and application of recombinant AIK in the future.
Antimicrobial Cationic Peptides ; biosynthesis ; Antineoplastic Agents ; metabolism ; Escherichia coli ; metabolism ; Genetic Vectors ; HL-60 Cells ; Humans ; Polymerase Chain Reaction ; Recombinant Proteins ; biosynthesis ; Sequence Analysis, DNA

Objective To investigate the variation characteristics of adenovirus type 55 (HAdV-B55) gene on plateaus.Methods Throat swabs were collected from HAdV-B55 infected patients and used for virus isolation in HEp-2 cells.The whole-genome sequence was obtained by PCR and sequencing.HAdV-B55 gene sequence was blast with the previously reported virus.Results HAdV-B55 strains were isolated from throat swabs, which were named LS89/Tibet/2016.The whole-genome sequence was obtained and submitted to GenBank with the accession number of KY002683.No large fragment gene recombination was found between this HAdV-B55 strain and previous strains, and the sequence similarity with QS-DLL strain was 99.9%.Conclusion This study provides more information for the evolution patterns of adenovirus 55 and will contribute to the prevention and control of HAdV-B55 infection in the future.

OBJECTIVETo delineate the clinical, biochemical and genetic mutational characteristics of a child with mitochondrial complex III deficiency.

METHODSClinical information and results of auxiliary examination of the patient were analyzed. Next-generation sequencing of the mitochondrial genome and related nuclear genes was carried out. Suspected mutation was confirmed in both parents with Sanger sequencing. Heterozygous deletion was mapped with chromosomal microarray analysis and confirmed with real-time PCR.

RESULTSThe patient presented with vomiting, polypnea, fever, metabolic acidosis, hyperlactatemia, hypoglycemia, dysfunction of coagulation and immune system, in addition with increased lactate dehydrogenase and creatine kinase isoenzyme. Elevation of blood alanine and acylcarnitines as well as urinary ketotic dicarboxylic acid were also noted. The patient also presented development delay, mental retardation and hypotonia. Sequence analysis revealed two mutations in the nuclear gene UQCRB, which included a previously reported frameshift mutation c.306_309delAAAA(p.Arg105Lysfs*22) and a novel large deletion encompassing the entire UQCRB gene.

CONCLUSIONThe clinical, biochemical and gene mutation characteristics of a child with mitochondrial complex III deficiency caused by mutations of the UQCRB gene have been delineated.

Adult ; Base Sequence ; Carrier Proteins ; genetics ; Electron Transport Complex III ; deficiency ; genetics ; Female ; Humans ; Infant ; Male ; Mitochondrial Diseases ; genetics ; Molecular Sequence Data ; Mutation

Objectives: To evaluate the clinical characteristics and prognosis of high risk cytogenetic abnormalities (HRCA) and various combinations of cytogenetic abnormality in patients with newly-diagnosed multiple myeloma (NDMM) . Methods: This retrospective study collected 182 NDMM patients in the First Affiliated Hospital of Jilin University between Nov. 2009 and May 2018. HRCA included 1q+, del (17p) , t (4;14) , and t (14;16) detected by FISH, and non-HRCA included del (13q) , t (11;14) detected by FISH. The clinical characteristics among three groups, including cases who carrying a single HRCA, 1 HRCA in combination with non-HRCA and cases carrying two or more HRCAs (double/triple-hit) were observed. Kaplan-Meier curve was used to analyze both progression-free survival (PFS) and overall survival (OS) for the three groups. Results: The survivals of patients with 1 HRCA in combination with non-HRCA were similar to those with two or more HRCAs (double/triple-hit) , the median PFS (mPFS) was 19.1 m vs 12.1 m (P=0.248) and median OS (mOS) was 29.6 m vs 29.3 m (P=0.774) . Furthermore, the prognosis of these two groups were both inferior to patients with a single HRCA, respectively. (mPFS: 32.2 m, P=0.040, P=0.001; mOS: 42.3 m, P=0.021, P=0.041) . Strikingly, both the mPFS and the mOS of patients with 1 HRCA in combination with non-HRCA (regardless of high risk or not) were significantly shorter than that of cases with a single HRCA (mPFS: 15.1 m vs 32.2 m, HR=2.126, 95%CI 1.176-3.843, P=0.005; mOS: 29.3 m vs 42.3 m, HR=1.442, 95%CI 0.705-2.950, P=0.011) . Conclusion It is of prognostic significance value for detecting double/triple-hit based on FISH cytogenetics in NDMM.

Objective: To evaluate the prognostic significance of combining ISS-Ⅲ and high risk cytogenetic abnormalities [HRCAs, including 1q gain/amplification and del (17p) ] in patients with newly-diagnosed multiple myeloma (NDMM) . Methods: The clinical characteristics and relevant variables were retrospectively analyzed in a total of 270 NDMM patients diagnosed between November 2009 and May 2018. ISS-Ⅲ stage and HRCAs [detected by FISH, including 1q gain/amplification and del (17p) ] were defined as risk factors (hit) . Based to the number of hit per case, these patients were divided into four groups carrying 0 to 3 risk factors, respectively. Progress-free survival (PFS) and overall survival (OS) were then analyzed using the Kaplan-Meier estimator. Results: Patients who carried single hit (n=120, 44.4%) had shorter median PFS (23.0 vs 28.9 months; P>0.05) and OS (42.3 vs 53.7 months; P>0.05) than those with no risk factors (n=66, 24.4%) . Of note, the outcome of patients who had two or more risk factors (double/triple, n=84, 31.1%) was much worse than those with either no or one risk factor, indicated by significantly reduced median PFS (14.5 months; HR=1.584, 95%CI 1.082-2.319; P=0.003 for double/triple vs single hit) and OS (18.4 months, HR=2.299, 95%CI 1.485-3.560; P<0.001 for double/triple vs single hit) . Strikingly, patients who had three risk factor (triple hit, n=5, 1.9%) displayed the poorest survival with extraordinarily shorter PFS (0.9-15.1 months) and OS (0.9-18.9 months) compared to those carrying two risk factors (double hit) . Analogous results were obtained when different combinations of ISS stages and HRCAs were analyzed. Conclusion These results suggest a potential but rather important role of combining multiple (e.g. double or triple) adverse factors determined via the routine ISS staging and FISH detection of cytogenetic abnormalities in risk stratification and prognostic prediction, which might be helpful to identify high risk patients more precisely at diagnosis. It also raised a possibility that a small group of ISS-Ⅲ patients carrying both 1q gain/amplification and del (17p) might represent an "extremely-high risk" subset of MM.