Humans ; Occupational Health ; Workplace ; statistics & numerical data

Objective To analyze the differences in the levels of serum adiponectin between premature neonates.and term neonates.To explore the effect of preterm on the level of serum adiponoctin and the mechanism by which prcterm contributes with the serious risk factor of type 2 diabetes and cardiovascular diseases in adulthood.Method The serum adiponectin concentration was quan-tified in 30 term neonates and 21 premature neonates hy immunoradiometric assay.Results The concentration of serum adiponeetin was (34.29?7.24) mg/L in premature neonates and(62.47?28.33) mg/L in term neonates. The level of serum adiponetin in pre-mature neonates was significantly lower than that in term neonates ( P

Objective To establish a real time reverse transcription polymerase chain reaction method for detecting WT1 and to understand the expression levels of WT1 in acute lymphocytic leukemia(ALL) of children through examining peripheral blood of leukemia children.Methods Thirty ALL patients, 13 non-leukemia Children and 18 normal children were included in this study. The method of real time RT-PCR detecting the expression of WT1 was established. The expression levels of WT1 gene were tested by this method.Results The expression levels of WT1 in 13 ALL with newly diagnosed patients were (105-106)copies/?g RNA, 12 with partial remission were (102-104)copies/?g RNA and 12 with complete remission were (0-102)copies/?g RNA.Conclusions Significant expression levels of WT1 in ALL are higher than those in non-leukemias and normal children.WT1 could be a marker for detecting minimal residual disease and evaluating therapy efficacy in ALL.

Adult ; Herpes Zoster ; etiology ; Herpesvirus 3, Human ; genetics ; Humans ; Male ; Middle Aged ; Mutation

In this study, the general bacterial probe and specific cellulolytic bacterial probes were used to quantify the bacteria in rumen. The total RNA were extracted and then hybridized with general bacterial probe after a dilution of concentration. The result showed that there was a high correlation between the hybridization signal and the dilution of total bacterial RNA. Based on the result above, the quantities of three cellulolytic bacteria in rumen sample were detected. The comparative RNA percentage of three cellulolytic bacteria to total bacterial RNA were similar to the previous reports. It can be concluded that the quantification of bacteria in rumen could be conducted by this approach, and which could be used in future research.

OBJECTIVE: To observe the expression of aquaporin 4 (AQP4) in diffuse brain injury (DBI) of rats and to explore the corresponding effect of AQP4 for brain edema. METHODS: The rat model of DBI was established using Marmarou's impact-compression trauma model. Brain water content was measured by dry-wet weight method. Blood-brain barrier permeability was evaluated by Evans blue (EB) staining. Immunohistochemical method was used to observe the expression of AQP4. RESULTS: Brain water content increased after 3 h and peaked at 24 h after DBI. Brain EB content significantly increased and peaked at 12 h after DBI. The expression of AQP4 significantly increased after 3 h and peaked at 24 h after DBI, and the number of AQP4 positive astrocytes increased. CONCLUSION The increment of the permeability of blood-brain barrier and the expression of AQP4 may contribute to the development of brain edema in rat DBI. The change of AQP4 expression in astrocytes may also contribute to determine DBI.
Animals ; Aquaporin 4/metabolism* ; Astrocytes ; Blood-Brain Barrier/metabolism* ; Brain ; Brain Edema/metabolism* ; Brain Injuries/metabolism* ; Cell Membrane Permeability/genetics* ; Disease Models, Animal ; Permeability ; Rats ; Water

A novel transferrin modified non-viral gene delivery system Tf-PLPD was developed and the related characteristics was investigated. Blank procationic liposomes were prepared by film dispersion-filteration method. PLPD was prepared as follows by first mixing the plasmid DNA and protamine together, then the resulted polyplexes were incubated for 10 min at room temperature, followed by addition of preformed blank procationic liposomes. Transferrin was adsorbed at the surface of PLPD via electrostatic interactions to form Tf-PLPD. Central composite design (CCD) was employed to optimize the formulation. The HepG2 cells were transfected using lacZ as reporter gene and characteristics such as the morphology, the mean particle size, the zeta potential and the transfection efficiency in HepG2 cells were further investigated by different methods. The resulting PLPD had a regular spherical surface with an average size of (228. 9 +/- 8. 0) nm (polydispersity index, PDI = 0. 122 +/- 0. 02, n = 3) , a zeta potential of ( - 25. 08 +/-2. 50) mV (n = 3) and a transfection efficiency of (12. 18 +/- 3. 80) mU x mg(-1) (protein). The Tf-PLPD had an average size of (240 +/- 12) nm (polydispersity index, PDI = 0. 150 +/- 0. 03, n = 3), a zeta potential of ( - 24. 10 +/- 2. 50) mV ( n = 3) and a transfection efficiency of (24. 26 +/- 2. 60) mU x mg(-1) (protein) , 20 times greater than that of the naked plasmid DNA. The presence of serum didn' t affect the tansfection activity of PLPD or Tf-PLPD. Compared to one kind of cationic liposomes (liposome-protamine-DNA, LPD), the PLPD and Tf-PLPD had much less cytotoxicity to three hepatic cell lines (including HepG2, SMMC7721 and Chang' s normal hepatocyte). The results indicated that the Tf-PLPD is a perspective non-viral vector for gene delivery systems.
Cations ; chemistry ; Cell Line ; Cell Line, Tumor ; Cell Survival ; DNA ; chemistry ; genetics ; Hepatocytes ; cytology ; metabolism ; Humans ; Liposomes ; chemistry ; Liver Neoplasms ; genetics ; pathology ; Particle Size ; Plasmids ; chemistry ; genetics ; Protamines ; chemistry ; Transfection ; methods ; Transferrin ; chemistry ; genetics

OBJECTIVETo explore the association and interaction between the components of metabolic syndrome (MS) and cardiovascular disease (CVD).

METHODIn this cohort study, participants (total 3598, male 1451) were recruited and followed up for five years from the program "prevention of multiple metabolic disorders and MS in Jiangsu province". We used modified Asian criteria of the National Cholesterol Education Program Adult Treatment Panel III (NCEP ATP III) to define the presence of MS. COX regression was used to analyze the association between the MS and its components with CVD; both the multiplication of blood pressure (BP) and 2, 3, or 4 other components of MS in the logistic regression model and the estimation of the relative excess risk due to interaction (RERI), the attributable proportion due to interaction (AP), and the synergy index (S) and 95% confidence intervals (95%CI) were used to evaluate the interactions between the components of MS.

RESULTSAfter adjustment for traditional CVD risks, the adjusted risk ratio (aRR) of CVD was 2.49 (95%CI: 1.59 - 3.90) in the MS group compared with the non-MS group at baseline. The aRRs of MS components to CVD were as follows: 1.44 (95%CI: 0.88 - 2.37) for waist circumference; 2.84 (95%CI: 1.73 - 4.68) for BP; 1.31 (95%CI: 0.83 - 2.07) for low high density lipoprotein; 1.84 (95%CI: 1.19 - 2.85) for triglyceride; 1.55(95%CI: 0.98 - 2.45) for fasting plasma glucose, respectively. BP was the single component significantly related to CVD (aRR = 2.58, 95%CI: 1.55 - 4.29). The risk of CVD was significantly increased (aOR = 4.47, 95%CI: 2.35 - 8.51) when BP was combined with 2, 3 or 4 other components of MS in the participants.

CONCLUSIONSOnly BP is an independent CVD risk factor in the components of MS, the risk of CVD was significantly increased when BP was combined with other components of MS in this cohort.

Adult ; Aged ; Blood Pressure ; Cardiovascular Diseases ; epidemiology ; etiology ; China ; epidemiology ; Cohort Studies ; Female ; Humans ; Male ; Metabolic Syndrome ; complications ; epidemiology ; Middle Aged ; Risk Factors

This study aims to investigate the change of plasma concentration of digoxin (DIG) in rats with ovariectomy. Twelve female SD rats were randomly assigned into ovariectomized group and sham group (n = 6). All rats plasma was collected after a single dose of 2 mg x kg(-1) DIG administrated orally, serum DIG concentration was determined by LC-MS/MS. The level of P-gp in the intestinal was analyzed by Western blotting. Pharmacokinetic calculations were performed on each individual using DAS 2.0 practical pharmacokinetic software. Compared with the sham group, C(max) of ovariectomized group decreased significantly (P < 0.01). There was no significant difference of AUC(0-t), and the level of P-gp was elevated in ovariectomized group. It was found that C(max) of DIG was significantly reduced after ovariectomy, and the change was associated with the decreased level of estrogen, which contributes to the increased level of P-gp.
ATP-Binding Cassette, Sub-Family B, Member 1 ; metabolism ; Animals ; Blotting, Western ; Chromatography, Liquid ; Digoxin ; blood ; pharmacokinetics ; Disease Models, Animal ; Estrogens ; blood ; Female ; Ovariectomy ; Rats ; Rats, Sprague-Dawley ; Tandem Mass Spectrometry

BACKGROUNDDiabetic cardiomyopathy is the major cause of morbidity and mortality in diabetic patients. Oxidative stress plays an important role in diabetic cardiomyopathy. This study aimed to investigate the effects of adiponectin on oxidative stress and apoptosis in human cardiac myocytes (HCM) cultured with high glucose.

METHODSThe cells were assigned to three group: control group, high glucose group and high glucose plus adiponectin group. After culture for 24, 48, 72 hours, oxidative stress was evaluated by detecting levels of malondialdehyde (MDA) and superoxide dismutase (SOD) in the supernatant of culture media. The expression of p66Shc and Heme oxygenase-1 (HO-1) was detected by real-time polymerase chain reaction (PCR). Flow cytometry was designed to observe and detect cellular apoptosis.

RESULTSOur findings showed significant increase in MDA levels and decrease in SOD activity in the high glucose group compared with the control group (P < 0.05). However, MDA levels were significantly decreased and SOD activity was significantly increased in the adiponectin group compared with those in the high-glucose group (P < 0.05). The mRNA expression of HO-1 in the high glucose group was significantly increased in a time-dependent manner compared with that in the control group (P < 0.05). Adiponectin further increased the mRNA expression of HO-1 induced by high glucose in a time-dependent manner (P < 0.05).The expression of p66Shc was significantly increased in high glucose group compared with that in the control group (P < 0.05). Adiponectin significantly suppressed the upregulation of p66Shc induced by high glucose (P < 0.05). The apoptotic rate of cardiomyocytes was significantly increased in the high glucose group compared with that in the control group while the apoptotic rate in the adiponectin group was remarkably declined in comparison with that in the high glucose group.

CONCLUSIONAdiponectin reduces high glucose-induced oxidative stress and apoptosis and plays a protective role in myocardial cells by upregulating the HO-1 expression and downregulating p66Shc expression.

Adiponectin ; pharmacology ; Apoptosis ; drug effects ; Cell Line ; Flow Cytometry ; Glucose ; pharmacology ; Humans ; Malondialdehyde ; metabolism ; Myocytes, Cardiac ; cytology ; drug effects ; metabolism ; Oxidative Stress ; drug effects ; Reverse Transcriptase Polymerase Chain Reaction ; Superoxide Dismutase ; metabolism