[Age structures of Spodiopogon sibiricus populations on weedy meadow and elm woodland in Songnen Plain, northeast China].

In 2003 and 2006, investigations were made on the age structures of Spodiopogon sibiricus populations as well as the matter productivities and vegetative reproduction capacities of different age-class modules of the populations on the weedy meadow and elm woodland in Songnen Plain of northeast China. At the two habitats, the tillers of S. sibiricus all consisted of 2-3 age classes, and the rhizomes all composed of 4 age classes.

catena-Poly[[dibromidomercury(II)]-μ-3,6-bis-(2-pyridyl-sulfan-yl)pyridazine-κN:N].

In the title coordination polymer, [HgBr(2)(C(14)H(10)N(4)S(2))](n), the Hg(II) atom is four-coordinated in a distorted tetra-hedral geometry by the two N atoms of the pyridyl groups of different 3,6-bis-(2-pyridyl-sulfan-yl)pyridazine ligands and two Br atoms. The bridging function of the cis ligands leads to a helical chain structure along [100].

[Analysis of clinical characteristics and antimicrobial resistance of carbapenem-resistant Acinetobacter baumannii infections in children].

Objective: This study aimed to summarize the clinical characteristics and antimicrobial resistance of carbapenem-resistant Acinetobacter baumannii (CRAB) infections in children, identify its risk factors and to raise the level of diagnosis and treatment of this disease.

Method: The data of clinical and antimicrobial susceptibility of 32 cases of CRAB and 64 cases of carbapenem-susceptible Acinetobacter baumannii (CSAB) infections as control seen between January 1, 2004 and December 31, 2010 in Yuying Children's Hospital Affiliated to Wenzhou Medical College were analyzed retrospectively.

Result: Thirty-two cases of CRAB infections were identified, 21 were male and 11 female.

A new langbeinite-type phosphate: K(2)AlSn(PO(4))(3).

Single crystals of the title compound, dipotassium aluminium tin(IV) tris-[phosphate(V)], K(2)AlSn(PO(4))(3), were synthesized by a high temperature reaction in a platinum crucible. In the structure, the Al(III) and Sn(IV) atoms occupy the same site on a threefold rotation axis with occupational disorder in a 1:1 ratio. In the three-dimensional structure, Al/SnO(6) octa-hedra and PO(4) tetra-hedra are inter-connected via their vertices, yielding a [Al/SnP(3)O(12)](n) framework.

[Synthesis and fluorescence properties of the complexes [(Tb(x)Y(1-x)) (HL)L'Cl x 1/2H2O]].

By replacing a part of terbium ions with yttrium ions using doping method, a series of dinuclear complexes of 1,3,5-benzene tricarboxylic acid (H3BTC) and phenanthroline (phen) with different molar ratios of Tb3+ to Y3+ were synthesized in the present paper. Their elemental analysis, rare earth complexometric titration, molar conductivity, IR spectra and UV spectra were studied, and the contents of terbium and yttrium of three doped complexes were measured by a plasma emission spectrophotometer. Their chemical formula is inferred to be (Tb(x)Y(1-x)) (HL)L'Cl x 1/2H2O (x = 0.

The safety-influencing factors in use of the tonics of Chinese medicine: a meta-analysis based on the case reports in periodicals.

Objective: To identify the possible safety-influencing factors in use of the tonics of Chinese medicine.

Methods: The related case reports published in periodicals published from 1949 to 2006 were analyzed with the bibliometrics method. Possibility on safety assessment of Chinese materia medica was discussed as well with the method of link analysis.

[Effect of metformin on apoptosis of renal cell carcinoma cells in vitro and its mechanisms].

Objective: To evaluate the effect of metformin on the apoptosis of renal cell carcinoma (RCC) cells in vitro and its mechanisms.

Methods: Fluorescent microscopy and flow cytometry were used to examine the changes in the apoptosis of 786-O cells after metformin treatment. The possible signaling molecules involved in this process were analyzed by immunoblot analysis of AMP-activated protein kinase (AMPK) signaling and caspase 9.

[Progress of the hydrokinetic chromatography and its application in the characterization of particulate drug delivery systems].

In the present paper, the basic principles, the device and the analytical method of the hydrodynamic chromatography (HDC) were summarized, which is most widely used in hydrokinetic chromatography. The application of the hydrodynamic chromatography in the determination of the particle size and size distribution of the particulate drug delivery system was also reviewed. The method can determine the particle size of nano- and micron-scale particulate drug delivery systems rapidly.

Bis[N-benzyl-2-(quinolin-8-yl-oxy)acetamide] monohydrate.

In the title compound, 2C(18)H(16)N(2)O(2)·H(2)O, the dihedral angles between the quinoline rings and the benzene rings in the two independent acetamide mol-ecules are 80.09 (5) and 61.23 (5)°.

Weight of the IDSA/ATS minor criteria for severe community-acquired pneumonia.

Background: The 2007 Infectious Disease Society of America (IDSA)/American Thoracic Society (ATS) guidelines defined severe community-acquired pneumonia (CAP) when patients fulfilled three out of nine minor criteria. Whether each of the criteria is of equal weight is not clear. The purpose of this study was to determine the weight of the minor criteria.

Cloning of a vacuolar H(+)-pyrophosphatase gene from the halophyte Suaeda corniculata whose heterologous overexpression improves salt, saline-alkali and drought tolerance in Arabidopsis.

Salt, saline-alkali conditions, and drought are major environmental factors limiting plant growth and productivity. The vacuolar H(+)-translocating inorganic pyrophosphatase (V-H(+)-PPase) is an electrogenic proton pump that translocates protons into vacuoles in plant cells. Expression of V-H(+)-PPase increases in plants under a number of abiotic stresses, and is thought to have an important role in adaptation to abiotic stress.

[An evaluation of clinical characteristics and prognosis of brain-stem infarction in diabetics].

Objective: To analyze the relationship between diabetics and the onset, clinical outcomes and prognosis of brainstem infarction, and to evaluate the impact of diabetes on brainstem infarction.

Method: Compare 172 cases of acute brainstem infarction in patients with or without diabetes. Analyze the associated risk factors of patients with brain-stem infarction in diabetics by multi-variate logistic regression analysis.

Pharmacokinetics and safety of a new bioengineered thrombolytic agent, human tissue urokinase type plasminogen activator in Chinese healthy volunteers.

The aim of our study was to investigate the pharmacokinetics and safety of human tissue urokinase type plasminogen activator (HTUPA) in healthy Chinese subjects after intravenous administration. Thirty-two subjects were given intravenous injection doses of 5-35 mg of HTUPA for safety evaluation. Twenty-four subjects were given 10, 20 or 30 mg HTUPA for pharmacokinetic assessment.

Active research fields of acupuncture research: a document co-citation clustering analysis of acupuncture literature.

Objective: This study aims to gain an overview of the active fields of acupuncture research in the last 5 to 10 years and before that.

Methods: Document co-citation clustering analysis method was used in this article. ISI web of knowledge-SCI-EXPANDED was used to retrieve the cited references of the documents published under the topic "acupuncture.

PPARδ agonists have opposing effects on insulin resistance in high fat-fed rats and mice due to different metabolic responses in muscle.

Background And Purpose: The peroxisome proliferator-activated receptor (PPAR)δ has been considered a therapeutic target for diabetes and obesity through enhancement of fatty acid oxidation. The present study aimed to characterize the effects of PPARδ agonists during insulin resistance of the whole body, muscle and liver.

Experimental Approach: Wistar rats and C57BL/J6 mice were fed a high fat diet (HF) and then treated with PPARδ agonists NNC61-5920 and GW501516.

[The effects of glycemic control on ophthalmic refraction in diabetic patients].

Objective: To evaluate effects of glycemic control on refraction in diabetic patients.

Methods: Twenty newly diagnosed diabetic patients were included in this study. The random blood glucose, glycosylated hemoglobin A1c (HbA1c) levels, fasting C-peptide and postprandial 2 h C-peptide levels were measured before treatment.

[Study on method of time-resolved fluorescence spectra for rare fluorescence chelate].

In the present paper, the technology of time-resolved fluorescence spectra was investigated in order to improve the sensitivity of the solid-phase time-resolved fluorescence immunoassay. The fluorescence properties, fluorescence intensity and detection method of the novel complexes 4,4'-dibromo-6,6'-bis(N,N-bis(ethoxycarbonylmethyl) amino methyl)-2,2'-bipyridine were investigated through self-developed solid-phase time-resolved fluorescence immunoassay instrument. At the same time, the Eu-TTA-phen and Eu-beta-NTA-TOPO series of Eu(III) compounds were detected.

[Use of recombinant human luteinizing hormone for ovulation stimulation in in vitro fertilization-embryo transfer].

Objective: To evaluate application of recombinant human luteinizing hormone (r-hLH) used in ovarian stimulation of assisted reproductive technique and impact on outcome of pregnancy.

Methods: From Apr. to Jul.

Dwarf apple MbDREB1 enhances plant tolerance to low temperature, drought, and salt stress via both ABA-dependent and ABA-independent pathways.

In higher plants, DREB1/CBF-type transcription factors play an important role in tolerance to low temperatures, drought, and high-salt stress. These transcription factors bind to CRT/DRE elements in promoter regions of target genes, regulating their expression. In this study, we cloned and characterized a novel gene encoding a DREB1 transcription factor from dwarf apple, Malus baccata (GenBank accession number: EF582842).

[Multidimensional spatial triangular area as an index for the evaluation of the release-absorption correlation of multiple component traditional Chinese medicines].

The paper is aimed to provide a novel index, named as multidimensional spatial triangular area, for the evaluation of the release-absorption correlation of multiple component traditional Chinese medicines (TCMs). The applicability of the method was demonstrated by the example data. The method and standard practice for evaluation of the release-absorption correlation for western medicines with single compound could not be applied to TCMs with multiple components.

[Molecular evolution and regulatory mechanism of microRNAs].

MicroRNAs, a type of small non-coding RNA specialized in regulation of gene expression, extensively participate in biological development, cell differentiation, apoptosis, and other cellular processes. MiRNAs evolved independently in different strains and generally conserved in the process of evolution. This review summarized the origin, regulation of methylation, and evolutionary conservation of miRNAs.

Poor coronary collateral vessel development in patients with mild to moderate renal insufficiency.

Background: The development of coronary collaterals is crucial to survival through acute ischemia. Mild to moderate loss of renal function has been suggested to play a role in this event, but evidential data are scarce. The aim of this study was to investigate the relationship between mild to moderate renal insufficiency and coronary collateral development in patients with chronic total coronary artery occlusion.

[Optimization of extraction technics of total saponins from Pulsatilla cernua].

Objective: The extraction condition of total saponins from Pulsatilla cenua by ultrasonic wave was optimized by single factor and orthogonal experiments.

Methods: The largest absorbency of saponin was intended to be 470 nm by wavelength scan method with the pulchinenoside B4 as control sample, the linear relationship was observed between the absorbency and the content of saponin in the range of 0 - 0.040 mg/mL.

[An analysis of the cause and countermeasure of death of patients with severe obstructive sleep apnea hypopnea syndrome].

Objective: To discuss the causes and countermeasures of death of severe obstructive sleep apnea hypopnea syndrome (OSAHS) patients undergoing tests or treatment.

Methods: A retrospective study of the data of six patients with severe OSAHS who died undergoing tests or treatment in 6 hospitals was conducted.

Results: Among the 6 patients, overly fat were found in 2 cases, hypertension in 2 cases, cardiac diseases in 2 cases, abnormal pulmonary function or chest X-ray in 2 cases, diabetes in 2 cases, while 2 cases had no above positive finding.

[Study of SMN gene in Chinese children with spinal muscular atrophy].

Objective: To study the incidence of homozygous absence of SMN1 exons 7 and 8, SMN gene conversion frequency and SMN subtle mutations in children with spinal muscular atrophy (SMA).

Methods: The homozygous deletion was detected by PCR-RFLP in 106 Chinese children with SMA, gene conversion by RFLP and subtle mutations by sequencing.

Results: The rate of deletion of SMN1 exons 7 and/or 8 was 91.