OBJECTIVETo map the regulatory domain of Escherichia coli T-protein.

METHODSFragmentation cloning was employed in cloning of 11 fragments from T-protein. The regulatory activity of each fragment was determined respectively.

RESULTSThe regulatory domain of T-protein was located in the C-terminal 270 amino acids, which was the same location as PDH domain.

CONCLUSIONT-protein has no independent regulatory domain.

Cloning, Molecular ; Deoxyribonucleases, Type I Site-Specific ; analysis ; chemistry ; genetics ; Escherichia coli Proteins ; analysis ; chemistry ; genetics ; Nucleic Acid Conformation ; Peptide Fragments ; chemistry ; genetics ; Protein Binding ; genetics ; Regulatory Elements, Transcriptional ; genetics

OBJECTIVETo perform a meta-analysis on clinical outcomes of minimally invasive percutaneous plate osteosynthesis (MIPPO) or open reduction and internal fixation (ORIF) for distal tibial fractures in adults.

METHODSPubmed database (from 1968 to March 2014), Cochrane library and CNKI database (from 1998 to March 2014) were searched. Case-control study on minimally invasive percutaneous plate osteosynthesis (MIPPO) or open reduction and internal fixation (ORIF) for distal tibial fractures in adults were chosen,and postoperative infection, operative time, blood loss, fracture nonunion rate, delayed union,fracture malunion rate were seen as evaluation index for meta analysis. The system review was performed using the method recommended by the Cochrane Collaboration.

RESULTSTotally 5 studies (366 patients) were enrolled. Meta-analysis showed that there were significant meaning in postoperative infection between MIPPO and ORIF [OR = 0.23,95% CI (0.06,0.92), P = 0.04]; fracture nonunion rate in MIPPO was lower than in ORIF group [OR = 0.16, 95% CI (0.03,0.76), P = 0.02]; operative time in MIPPO was shorter than in ORIF group, and had significant difference [MD = -14.42, 95% CI (-27.79, -1.05), P < 0.05]; blood loss in MIPPO was less than in ORIF group [MD= -87.17,95%CI (-99.20, -75.15), P < 0.05]; there was no obviously meaning in delayed union between two groups.

CONCLUSIONFor distal tibial fractures in adults, MIPPO has, advantages of short operative time, less blood loss, lower incidence of infection and fracture non-uniom, but with high fracture malunion rate. MIPPO for distal tibial fractures in adults is better than ORIF, and the best treatment should choose according to patient's condition.

Bone Plates ; Fracture Fixation, Internal ; methods ; Fracture Healing ; Humans ; Minimally Invasive Surgical Procedures ; methods ; Operative Time ; Tibial Fractures ; surgery

The viability and life span of pollen were evaluated by TTC (2,3,5-triphenyl tetrazlium chloride) and the peroxidase solution, the stigma receptivity were estimated by benzidine-H2O2 method and the fruiting characteristics were investigated. The results showed that (1) Anoectochilus roxburghii and A. formosanus appeared the same up-and-down trend of the pollen viability, increased and then decreased. The storage temperature and storage time had significant impact on the pollen viability. With the extension of storage time, the pollen activity decreased. 4 degrees C refrigerator storage may be extended the pollen vitality. (2) The stigma had receptivity in 1st day and reached the highest level in the 4th day after blooming. A. roxburghii lost receptivity in the 8th day while A. formosanus lost receptivity in the 10th day after blooming. (3) The different pollination had significant impact on seed setting rate. The seed setting rate of artificial cross-pollination was higher than that of the artificial self-pollination. Collecting pollen in the 3rd day and carrying out artificial cross-pollination in the 4th day after blooming can significantly improve seed setting rate. The results provided technical assurance for A. roxburghii and A. formosanus breeding of new varieties and seed breeding.
Cell Survival ; China ; Flowers ; physiology ; Fruit ; growth & development ; Orchidaceae ; growth & development ; physiology ; Pollen ; growth & development ; Reproduction ; Temperature

Objective To evaluate the melancholia incidence in the convalescence period of cerebral hemorrhage and its correlated factors.Methods Ninety-eight cerebral hemorrhage patients in the convalescence period were involved in this study.Melancholia was assessed by Hamilton depression scale (HAMD),neural functional deficiency was assessed by the national institute of health stroke scale (NIHSS),cognitive function deficiency was assessed by the Montreal cognitive assessment (MoCA) and neural functional deficiency recovery was assessed by modified Rankin scale (mRS).Hemorrhagic site and blood quantity were detected with CT.The blood flow of middle cerebral artery (MCA),anterior cerebral artery (ACA),posterior cerebral artery (PCA) was detected by TCD.Results The melancholia incidence in the convalescence period was 51.0％(50/98),34.0％(17/50) in males and 68.8％(33/48) in females,there was significant difference between the two (P ＜ 0.05 ).The scores of NIHSS and mRS had significantly positive correlation with HAMD (P ＜ 0.05 ),and had significantly negative correlation with MoCA (P ＜ 0.05 ).When the hemorrhagic site was in frontal lobe and blood quantity was 20-40 ml,the melancholia incidence was increased [76.2％ (16/21),62.5％ (25/40)].The average blood velocity of MCA,ACA and PCA in melancholia patients was significantly slower than that without melancholia patients,while resistance index was significantly higher in melancholia patients (P ＜ 0.05).Conclusions Melancholia incidence in the convalescence period of cerebral hemorrhage has positive correlation with sex,NIHSS,MoCA,hemorrhagic site and blood quantity.The average cerebral blood flow in the melancholia patients is significantly slower and resistance index is significantly higher.

Objective: To examine the modalities of treatment and clinical outcomes of emphysematous pyelonephritis (EPN), in order to improve the survival rate of EPN patients. Methods: Totally 14 patients diagnosed as EPN between October 2011 and November 2020 at Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine were included in this article. Data collection including patient demographics, clinical manifestations, management and clinical outcomes were conducted by retrospective charts review, after receiving the institutional review board's approval. There were 11 females and 3 males with a median age of 59 years (range: 52 to 73 years). The lesions were located on the left side in 10 patients and right side in 4 patients. All the 14 patients suffered from fever, and present with severe sepsis or septic shock. The median time from symptom onset to admission to hospital was 3 days(range: 2 to 5 days). All cases had diabetes mellitus. Escherichia coli was the most common organism been cultured (11 cases), while Klebsiella pneumonia was the second (3 cases). CT scan showed bubbly or located gas in the renal parenchyma in 5 cases and presence of steaky or mottled gas in the renal parenchyma in 9 cases. All patients had been admitted to ICU for anti-septic shock therapy. Three patients had undergone percutaneous catheter drainage along with broad-spectrum antibiotics therapy while 3 patients had immediate nephrectomy, the other 8 cases had a combination of an initial percutaneous catheter drainage and second stage nephrectomy. Results: In this case series, 3 patients were died from EPN while the other 11 were survived. The median ICU stay time was 6 days (range: 3 to 11 days). Of the 3 patients died from EPN, 2 had undergone percutaneous catheter drainage along and 1 had received immediate nephrectomy. Among the 11 patients who were survived, only 1 had received percutaneous catheter drainage while the other 10 received nephrectomy (8 patients had staged nephrectomy). Follow-up was performed 6 months after discharge. Of the 11 surviving patients, 2 were lost to follow-up, and the remaining 9 patients had an creatine level of (118.4±29.4) μmol/L (range: 89 to 176 μmol/L). Conclusions: For patients coupled with diabetes who were initially diagnosed as acute pyelonephritis, the possibility of EPN should be considered when the disease progressed rapidly especially septic shock occurred. On the basis of empirical broad-spectrum antibiotics therapy and standardized anti-septic shock treatment, a combination of an initial percutaneous catheter drainage and second stage nephrectomy could be efficacious.
Aged ; Emphysema/therapy* ; Escherichia coli Infections ; Female ; Humans ; Male ; Middle Aged ; Pyelonephritis/therapy* ; Retrospective Studies ; Treatment Outcome

OBJECTIVETo evaluate chemiluminescent immunoassay (CLIA), electrochemiluminescent immunoassay (ECLIA) and ELISA in determination of low level HBsAg.

METHODSAccording to the standard of CLIA Architect i2000, 70 samples were divided into three groups by HBsAg concentration : <1 ng/ml, 1-5 ng/ml and >4 ng/ml. The samples were also determined by ECLIA MODULAR170 and ELISA, and the results were compared with those measured by CLIA Architect i2000.

RESULTSThe concordance rates of ECLIA MODULAR170 with Architect i2000 was 79.2% for <1 ng/ml group, 100% for 1-5 ng/ml group, 100% for >4 ng/ml group. And the concordance rates of ELISA with Architect i2000 was 0 % for <1 ng/ml group, 45.5% for 1-5 ng/ml group and 100 % for >4 ng/ml group.

CONCLUSIONFor determination of low level HBsAg,CLIA Architect i2000 and ECLIA MODULAR170 have high credibility. ELISA is also credible when HBsAg >5 ng/ml, but not for low level HBsAg, especially for HBsAg <1 ng/ml.

Enzyme-Linked Immunosorbent Assay ; Hepatitis B Surface Antigens ; blood ; Humans ; Immunoassay ; methods ; Luminescent Measurements ; methods

OBJECTIVETo investigate the mechanisms of memory impairment induced by pentylenetetrazole (PTZ)-kindled epilepsy in rats and the effects of endogenous histamine.

METHODSRats were injected i. p with a subconvulsive dose of PTZ every 48 h until fully kindled. Memory was tested by shuttle box with passive avoidance. Brain histamine was measured spectrofluorometrically. Neurons of hippocampus were investigated with HE stain.

RESULTPTZ-kindled epilepsy caused memory impairment in rats, i .e. latency of passive avoidance was shortened in shuttle box. Pretreatment of histidine, the precursor of histamine, showed an ameliorating effect on memory impairment induced by epilepsy. Decreased histamine contents in the hippocampus, thalamus and hypothalamus were observed after fully kindled in rat. In addition, intact neurons of the CA1 and CA3 regions in hippocampus decreased to 72.7 % and 78.9 % compared with those in control group.

CONCLUSIONPTZ-kindled epilepsy causes memory impairment, and it might be due to a decrease of brain histamine and loss of hippocampal neurons induced by epilepsy.

Animals ; Epilepsy ; chemically induced ; complications ; metabolism ; Hippocampus ; metabolism ; pathology ; Histamine ; metabolism ; Kindling, Neurologic ; metabolism ; Male ; Memory Disorders ; etiology ; metabolism ; Neurons ; metabolism ; pathology ; Pentylenetetrazole ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Spectrometry, Fluorescence

OBJECTIVETo investigate the effects of the novel proteasome subunit Adrm1 knockdown by RNA interference on proliferation of colorectal cancer cells.

METHODSThe shRNA eukaryotic expression vector against Adrm1 was constructed and transfected into colon cancer RKO cells. The Adrm1-shRNA stable transfected clones were selected. Experimental cells were divided into 3 groups: the experimental group containing stable Adrm1-shRNA transfected cells, the control group containing only RKO colon cancer cells and stable empty vector transfected control group. The Adrm1 protein expression level was analyzed by Western blot. The colony-forming ability of the three groups was assessed by soft agar assay. The cell proliferation and apoptosis were analyzed by methyl thiazolyl tetrazolium (MTT) method and in situ end labeling (TUNEL) assay. Cell cycle changes were assayed by flow cytometry.

RESULTSAdrm1-shRNA effectively suppressed Adrm1 expression in the experimental group. Silencing of Adrm1 in RKO cells significantly inhibited their anchorage-independent growth, only occasional individual colonies were formed. The apoptosis rate of experimental group was (12.4 +/- 1.1)%, significantly higher than that of the stable empty vector transfected control group. The proportion of G(0)/G(1) and S/G(2) phase cells in the experimental group was (41.2 +/- 1.1)% and (58.8 +/- 1.1)%, respectively. The cells were arrested at G(1) phase. In addition, Adrm1 RNA interference combined with 5-Fu treatment significantly suppressed colorectal cancer cell growth in vitro.

CONCLUSIONSilencing of Adrm1 by RNA interference can significantly suppress proliferation of RKO cells through inducing apoptosis and arresting the cell cycle. The combined application of Adrm1 RNA interference and chemotherapy may become as a novel therapeutic strategy for Adrm1 overexpressed colorectal cancer.

Antimetabolites, Antineoplastic ; pharmacology ; Apoptosis ; Cell Cycle ; Cell Line, Tumor ; Cell Proliferation ; Colorectal Neoplasms ; metabolism ; pathology ; Drug Resistance, Neoplasm ; Fluorouracil ; pharmacology ; Genetic Vectors ; Humans ; Membrane Glycoproteins ; genetics ; metabolism ; Plasmids ; RNA Interference ; RNA, Small Interfering ; genetics ; Transfection

Adolescent ; Adrenalectomy ; adverse effects ; methods ; Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Laparoscopy ; adverse effects ; methods ; Male ; Middle Aged

Objective To explore the clinical value of serum ferritin (sFt) detection in patients with rheumatoid arthritis (RA) complicated with anemia.Methods From January 2014 to December 2016,154 female RA patients hospitalized at Bet jing Changping Hospital of Integrated Chinese and Western Medicine were enrolled and patients without other autoimmune diseases,severe liver and kidney disease,inflammatory infections and malignant tumors were excluded.At the same time,60 age-matched healthy physical examination were selected as a reference.The two groups were generally recorded physical ex amination,laboratory tests and activity index assessment.Comparison of the results of each group for statistical processing.Results The body mass index (BMI) of patients with anemia complicated with anemia (22.69± 3.89 kg/m2 vs 24.51 ± 3.61 kg/m2,t=-3.39,P＜0.001) and serum iron [9.95 (7.75)μmol/L vs 13.30 (7.80)μmol/L,F=-1.98,P＜0.001].However,the RA activity score (DAS28) and various activity indexes were significantly higher than those of non-concurrent anemia (F=1.71～2.14,all P＜0.05).However,there was no significant difference in sFt levels between the two groups (F=0.24,P=0.659).Patients with RA complicated with anemia had significantly higher ESR in patients with high sFt levels [29 (43)mm/h vs 59 (53)mm/h,F=4.35,P＜0.001] and had higher serum lipids,hypertension,diabetes.The incidence of cardiovascular disease,osteoporosis and hyperlipidemia was also higher,but the difference was not statistically significant.Conclusion RA complicated with anemia could aggravate the patient's condition.sFt may be used to assist the diagnosis and treatment of patients with RA complicated with anemia and monitor the occurrence of RA complications.