An online solid phase extraction ( SPE ) coupled with high performance liquid chromatography (HPLC)-mass spectrometry (MS) method was developed for the separation of 1,3,5,7-tetraacetyl-1,3,5,7-tetraazacyclooctane ( TAT ) and 1 , 3 , 5-triacetyl-1 , 3 , 5-triazacyclohexane ( TRAT ) which are the synthetic intermediates of cyclotetramethylenetetranitramine ( HMX) . In this experiment, molecularly imprinted polymers with TAT as the template were used as SPE sorbents. PC HILIC column was employed in liquid chromatographic separation. The parameters of SPE-HPLC were optimized. Acetonitrile was selected as the loading solution with flow rate of 0. 1 mL/min. After flushed by ethyl acetate, the TAT adsorbed on SPE was eluted by methanol, which was also used as the mobile phase in HPLC separation. The mass spectrometry was coupled with HPLC to identify the corresponding peaks. Under the optimized conditions, the linear detection range of this method was 6. 0 mg/L to 500. 0 mg/L, with the detection limit of 1. 8 mg/L (3σ). The enriching factor was 400 times and TAT recovery was 79%–93% in the standard addition experiment.

Objective To investigate the changes of protein kinase C(PKC)activity in peripheral blood T lymphocytes in children with chronic idiopathic thrombocytopenic purpura(CITP)and the relationship between PKC activity,T lymphocytes activation and thrombocytes decrease.Methods Collecting sterile peripheral blood from CITP children(n=30)and healthy children(n=30),T lymphocytes were isolated and purified by the T cell segregation enrichment column,the PKC activity was detected by non-radioactive assay.Soluble interleukin-2 receptor(sIL-2R),which was T cell activated marker,was determined by enzyme-linked immunoabsorbent assay(ELISA),platelet was counted by cell counting meter.Results Compared with healthy children,PKC activity was significantly enhanced in CITP children[(0.94?0.23)mmol/(min?L)vs(0.50?0.17)mmol/(min?L),t= 8.42 P

Objective To demonstrate the visual results and complications of an cryopexy in combination with intravitreal injection of expending gas in the therapy of primary rhegmatogenous retinaldetachment (RRD). Methods Thirty-two cases (32 eyes) were retrospectively reviewed in this study. The RRD diagnosis was confirmed by best corrected visual acuity,slit-lamp microscope,indirected ophthalmoscope and Goldman three-mirror contact lens. All patients had undergone cryopexy with intravitreal gas injection and assisted by correct body position. Patients were followed for 6 to 24 months. Post-operative BCVA,final anatomical outcome, complications and failed cases were analyzed. Results The reattachment rate of cryopexy with intravitreal gas injection was 81%(26/32 eyes). Four eyes required additional scleral buckling. Two eyes needed additional vitrectomy with intravitreal injection of expending gas (SF6).Final retinal reattachment was achieved in all 32 subjects (100%). Postoperative BCVA was significantly improved (P < 0.01). Conclusion Cryopexy with intravitreal gas injection is a simple,less trauma, lower cost and effective surgery for primary rhegmatogenous retinaldetachment.

Objective To find out the risk factors of postoperative low cardiac output syndrome(LCOS) of patients undergoing cardiac valvular surgery in ICU in order to provide basic for prevention and control measures.Methods Ninety-six valve replacement patients with valvular heart disease were enrolled as our subjects and they were hospitalized in ICU of the First People's hospital of Yichang from Jan.2008 to May.2013.The patients postoperative LCOS (Dopamine ＞ 10 μg/(kg · min)) were served as observation group (n =41),and the other were control groups(n =55).All data of the patients were recorded.Non-conditions Logistic regressions analysis were adopted to analyze the independent risk factors which resulted in LCOS undergoing cardiac valvular surgery.Results Of 96 patients undergoing cardiac vavular surgery,41cases (42.7％) had postoperative LCOS.Single factor analysis showed that hepatomegaly (P =0.007),course of diseases ≥ 15 years (P =0.042),cardiopulmonary bypass ≥ 120 min (x2 =3.937,P =0.047),pre-operative cardiac function ≥ Ⅲ degree (P =0.003) were the independent risk factors of postoperative LCOS undergoing cardiac valvular surgery.The Logistic multi factor regression analysis showed that the independent risk factors of postoperative LCOS undergoing cardiac valvular surgery included course of diseases ≥ 15 years (OR =2.825,95％ CI =(1.015-7.861)),Pre-operative cardiac function ≥ Ⅲ degree (OR =7.306,95％ CI =(2.050-26.035),P=0.002).Conclusion Course of diseases ≥15 years and Pre-operative cardiac function≥ Ⅲ-Ⅳ degree are the independent risk factors of LCOS undergoing cardiac valvular surgery.

This study was to evaluate the effect of individualized health education on blood glucose control in type 2 diabetic(T2D)Patients.Two hundred and thirty-eight T2D patients were randomly received individualized diabetes education(intervention group)or general education(control group).At 48 week,change of blood glucose control from baseline was observed.The blood glucose level and HbA1c in the intervention group were lower than those in the control group[(7.1±0.8)vs (9.3±6.5)mmol/L,(7.0 ±1.3)%vs(8.0%±1.0)%;P＜0.05].Thus,individualized diabetes education might be helpful for blood glucose control in T2D patients.

A novel member of extremely halophilic archaea, strain AJ2, was isolated from Ayakekum Lake located in Altun Mountain National Nature Reserve of Xinjiang Uygur Autonomous Region in China. The strain AJ2 requires at least 10% (w/v) NaCl and grows 10% to 30% (optimum at 20%). Phylogenetic analysis based on 16S rDNA sequence comparison revealed that strain AJ2 clustered to three Natrinema species with less than 97.7% sequence similarities, suggesting AJ2 is a novel member of Natrinema. A bacteriorhodopsin-encoding (bop) gene was subsequently detected in the AJ2 genome using the polymerase chain reaction technique. The cloning and sequencing of a 401 base pairs fragment indicated the deduced amino acid sequence of bop from AJ2 is different from that reported for bacteriorhodopsins. This is the first reported detection of a bop gene in Natrinema.
Bacteriorhodopsins ; genetics ; metabolism ; Cell Proliferation ; Gene Expression Profiling ; Genome, Archaeal ; Halobacteriaceae ; classification ; isolation & purification ; physiology ; Phylogeny ; Sequence Analysis, DNA ; Species Specificity

With references of historical materials and modern literature regarding acupoint characteristic, a secondary analysis on the concept, origin, related factors and research methods in present research of acupoint characteristic is performed. The acupoint characteristic should be considered as an acupoint inherent attribute that could explain physiological and pathological manifestations at the same time, including location attribute and function attribute, which is related with time and treatment method. Some re-thinking on acupoint characteristic is proposed as well as advice on further research method and direction, hoping to promote the research development of acupoint characteristic.
Acupuncture Points ; Acupuncture Therapy ; history ; China ; History, Ancient ; Humans ; Medicine in Literature ; Meridians

OBJECTIVETo investigate the effects of different concentrations of lipopolysaccharide (LPS), tumor necrosis factor α (TNFα), interleukin-6 (IL-6), dexamethasone (Dex), and insulin on the mRNA and protein expressions of GPR54 in the MCF7 cell line in vitro.

METHODSMCF7 breasr cancer cells were cultured and treated with different concentrations of LPS (10 and 20 µg/ml), TNFα (20 and 100 ng/ml), IL-6 (10 and 20 ng/ml), Dex (10(-6) and 10(-7) mol/L), and insulin (0.01 and 0.1 IU/L). Those treated with culture fluid only served as controls. The mRNA and protein expressions of GPR54 were measured by real-time PCR and Western blot, respectively, after 6, 24, 48, and 72 hours of treatment.

RESULTSCompared with the blank con- trol, LPS (10 and 20 µg/ml), TNFα (20 and 100 ng/ml), IL-6 (10 and 20 ng/ml), Dex (10(-6) and 10(-7) mol/L), and insulin (0.01 and 0.1 IU/L) significantly increased the expressions of GPR54 mRNA (P < 0.05) and protein (P < 0.05).

CONCLUSIONLPS, TNFα, IL-6, Dex, and insulin evidently increase the expression of GPR54 in the MCF7 cell line, indicating their influence on the function of gonads by regulating the GPR54 level.

Blotting, Western ; Dexamethasone ; administration & dosage ; pharmacology ; Glucocorticoids ; administration & dosage ; pharmacology ; Gonads ; drug effects ; metabolism ; Humans ; Hypoglycemic Agents ; administration & dosage ; pharmacology ; Insulin ; administration & dosage ; pharmacology ; Interleukin-6 ; administration & dosage ; pharmacology ; Lipopolysaccharides ; administration & dosage ; pharmacology ; MCF-7 Cells ; RNA, Messenger ; metabolism ; Real-Time Polymerase Chain Reaction ; Receptors, G-Protein-Coupled ; drug effects ; genetics ; metabolism ; Receptors, Kisspeptin-1 ; Time Factors ; Tumor Necrosis Factor-alpha ; administration & dosage ; pharmacology

Objective Obtaining chemical constituents of Angelica apaensis collected in Qiaojia County of Yunnan Province and detecting their anti-tumor activities in vitro. Methods The MeOH extract of was repeatedly subjected to column chromatography over silica gel, Sephadex LH-20 and/or RP-18 and semipreparative HPLC. Their anti-tumor activities in vitro were measured by MTT colorimetric assay. Results Eight compounds were isolated from the roots of this plant. Conclusion The major type of chemical constituents of in Yunnan is furocoumarin. These separated compounds showed weak anti-tumor activity in vitro.