Objective To observe the protection effects of sodium ?-aescinate(SA) on the nervous function in the rats with early spinal cord injury(SCI). Methods One hundred and twenty SD rats were randomly divided into four groups(n=30).Rats in the blank control group were performed laminectomy only,while those in the other three groups were injured at the level of Tl1 spinal segment by Allen's weight drop method(10 g ?10 cm) and immediately intraperitoneally given normal saline(5.0 mg/kg)(control group), SA(5.0 mg/kg)(SA group) and methylprednisolone(100 mg/kg)(MP group) once daily,respectively.After 8 h,24 h,96 h,7 d and 14 d,spinal cord function change of posterior limb were determined with Rivlin method.The rats were sacrificed and the injured segments were resected for pathological analysis. Results As time prolonged,the rehabilitation of spinal cord function with various degree could be observed in each group.Function rehabilitation was found among the rats in the control group,SA group and MP group 96 h after injury,and more rehabilitation was gained later in the latter two groups,while that was not the case in the control group.Rats in the SA and MP group gained more significant rehabilitation than those in the control group(P0.05).It was revealed by pathological analysis that no necrotic neurons was found in the blank control group,and the necrotic neurons in the SA group and MP group were significantly less than the control group at the same time points(P

Objective To investigate the correlation of oxygen extraction rate (ERO2) with blood lactate clearance rate and cardiac output (CO) in the early stage of post-restoration of spontaneous circulation (ROSC) in patients resuscitated from cardiogenic cardiac arrest,and to analyze the relationship between the ERO2 and prognosis.Methods Fourteen patients successfully resuscitated from in-hospital cardiogenic cardiac arrest in the emergency ICU from October 2012 to January 2014 were retrospectively analyzed.These patients were assigned to survival group (n =5) or death group (n =9) as per the outcome at 72 h after ROSC.At admission (0 h),3,6 and 12 h after ROSC,arterial blood and venous blood were drawn to detect ERO2 and lactate clearance rate.Cardiac output (CO) was measured by thoracic impedance method,APACHE Ⅱ scores were assessed,and survival time was recorded.Results The patients in the death group died during the period of 12-72 hours after ROSC.The significantly decreased ERO2 at 6 h and 12 h after ROSC,and decreased blood lactate clearance rate and decreased CO at 3 h,6 h and 12 h after ROSC were found in the death group compared with the survival group (all P ＜ 0.05).The ERO2 at 6 h and 12 h after ROSC was significantly positively related to blood lactate clearance rate (r =0.857,r =0.947,both P ＜ 0.05) and CO (r =0.968,r =0.936,both P ＜ 0.05) at 3 h,6 h and 12 h after ROSC.The ERO2 at 6 h and 12 h after ROSC was significantly negatively related to APPACHE Ⅱ score (r =-0.970,r =-0.973,both P ＜ 0.05);APPACHE Ⅱ scores were significantly negatively correlated with blood lactate clearancerates (r=-0.880,r=-0.899,r=-0.850,all P＜0.05) and CO (r=-0.876,r=-0.922,r=-0.916,all P＜0.05) at 3 h,6 h and 12 h after ROSC.Conclusions The ERO2 at 6h after ROSC may be used to assess the severity and prognosis of patients resuscitated from cardiogenic cardiac arrest.

Animals ; Blood Glucose ; drug effects ; Body Weight ; drug effects ; Chronic Disease ; Female ; Hypoxia ; physiopathology ; KATP Channels ; drug effects ; Male ; Propylamines ; pharmacology ; Protective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo analyze the distribution of single nucleotide polymorphisms (SNP) of growth hormone receptor (GHR) gene in Chinese Han ethnic population.

METHODSThe sample of 106 unrelated healthy Chinese Hans was studied by sequencing exons of the GHR gene to detect SNP.

RESULTSThere were 6 SNP spots identified in exon 6 and exon 10. Five of them were found in exon 10, and one in exon 6. There were differences between the allele frequencies of the SNP we found and those in the NCBI database. The highest heterozygosity of the SNP was found at 1630 A > C (I526L), which was 47.6%. The SNP 1483 A > C (P477T), 1735 A > C (P561T) and 1319 G > T (C422F) had polarity change. The SNP 536 A > G in exon 6 from the NCBI database was not detected in this population. The allele distribution of SNP was in good unity with the Hardey-Weinberg equilibrium.

CONCLUSIONIt is suggested that the SNP of GHR are unevenly distributed and different in different ethnic populations.

Asian Continental Ancestry Group ; ethnology ; Female ; Gene Frequency ; Humans ; Male ; Polymorphism, Single Nucleotide ; Receptors, Somatotropin ; genetics

Clinical evidence of hematopoietic restoration with umbilical cord blood (UCB) grafts indicates the UCB can be a useful source of hematopoietic stem cells for routine bone marrow reconstitution. Considering (10 +/- 5) x 10(8) nucleared cells per cord blood unit, there is a potential limitation for the use of cord blood in adults, which, however, can be overcome by ex vivo expansion of cells. A prerequisite for expansion is the significantly higher recovery of MNC, CD34+ cells and colony-forming cells (CFC) by thawing cryopreserved MNC. Cooling rate always acts as a critical factor that can affect the recovery of cells. Although the rate of - 1 degrees C/min is adopted in most of the cryopreservations, no data has been reported about the detailed effects of different cooling rates. The aim of the study was to reveal the different effects of cooling rates on cryopreservation of hematopoietic stem cells from cord blood. UCB samples were collected, and cryopreserved as mononuclear cells (MNC) with different cooling rates of - 0.5 degrees C/min, - 1 degrees C/min, - 5 degrees C/min, and the recovery and viability of MNC and CD34+ cells, the clonogenic capacity and the ex vivo expansion potential of UCB progenitor cells were evaluated after thawing. With - 1 degrees C/min cooling rate, the recovery of MNC reached 93.3% +/- 1.8% , viability 95.0% +/- 3.9% , recovery of CD34+ cells 80.0% +/- 17.9% , and clonogenic recovery were 87.1% +/- 5.5%, 88.5% +/- 8.9%, 86.2% +/- 7.4% for BFU-E CFU-GM CFU-MK, respectively. After 14 days of liquid culture, no significant difference was detected in CFC expansion between fresh and cryopreserved MNC cells with - 1 degrees C/min cooling rate, but this was not the case with - 0.5 degreesC/min and - 5 degrees C/min. In conclusion, it was demonstrated that controlling the rate at - 1 degrees C/min is more suitable for cryopreservation of hematopoietic stem cells than - 0.5 degrees C/min and - 5 degrees C/min.
Cell Survival ; physiology ; Cells, Cultured ; Cryopreservation ; methods ; Erythroid Precursor Cells ; cytology ; Fetal Blood ; cytology ; Flow Cytometry ; Granulocyte-Macrophage Progenitor Cells ; cytology ; Hematopoietic Stem Cells ; cytology ; Humans

·AIM: To observe the therapeutic effect of visual perception training combined with total nutrition meal sequential therapy in the treatment of myopic amblyopia.·METHODS:Totally 73 children ( 135 eyes ) with myopic amblyopia were divided into control group ( 36 cases, 67 eyes) and treatment group (37 cases, 68 eyes) according to random number table. The control group were treated with traditional spectaculars and grating covering combined with fine eyesight training;the treatment group were treated with visual perception training combined with total nutrient meal sequential therapy. The visual acuity, diopter and average diopter of two groups were compared before and after treatment at 3, 6mo and 1a. The curative effect of two groups of children was compared after 1a treatment. And the adverse reactions were recorded in two groups during the treatment period. The recurrence rate of amblyopia in 1a follow-up was compared between two groups.·RESULTS: The difference of visual acuity between two groups was not significant at 3mo (P>0. 05). The visual acuity of the treatment group was significantly higher than that of the control group at 6mo and 1a (P<0. 05). There was no significant difference in diopter between the two groups after 3, 6mo and 1a (P>0. 05), but the average annual refractive changes in the treatment group were significantly lower than that in the control group ( P<0. 05). The basic cure rate and total effective rate of the treatment group were significantly higher than that of the control group (P<0. 05). There were no severe adverse reactions occurred between two groups during the treatment period. The recurrence rate of amblyopia in the treatment group was significantly lower than that in the control group (P<0. 05) after 1a follow-up.· CONCLUSION: Visual perception training combined with total nutrition meal sequential therapy in the treatment of myopic amblyopia in preschool children can significantly improve patients' visual acuity, reduce the average annual diopter changes, improve the therapeutic effect, reduce the recurrence rate of amblyopia.

BACKGROUNDInsulin resistance (IR) is significantly associated with coronary artery disease and cardiovascular events in patients with or without type 2 diabetes mellitus. This study aimed to evaluate the influence of IR on long-term outcomes of patients undergoing percutaneous coronary intervention (PCI) with sirolimus-eluting stent (SES) implantation.

METHODSA total of 467 consecutive patients undergoing SES-based PCI were divided into IR group (n = 104) and non-IR group (n = 363). The patients were followed up for one year. The rate of major adverse cardiac events (MACEs) including death, non-fatal myocardial infarction and recurrent angina pectoris was compared by the log-rank test, and the independent risk factors were identified by the Cox regression analysis.

RESULTSMACEs occurred more frequently, and cumulative survival rate was lower in the IR group than in the non-IR group during the follow-up (all P < 0.05). IR was an independent risk factor for the occurrence of cardiac death and non-fatal myocardial infarction (OR = 2.76, 95%CI = 1.35 - 5.47, P = 0.034). Old age, diabetes, and multi-vessel disease were determinants for recurrent angina pectoris after PCI (P < 0.05). Subgroup analysis revealed that IR (OR = 3.35, 95%CI = 1.07 - 13.59, P = 0.013) and multi-vessel disease (OR = 2.19, 95%CI = 1.01 - 5.14, P = 0.044) were independent risk predictors for recurrent angina pectoris in patients with diabetes after PCI.

CONCLUSIONSIR is associated with reduced MACE-free survival and remains an independent predictor for recurrent angina pectoris after PCI with SES implantation.

Adult ; Aged ; Angioplasty, Balloon, Coronary ; Coronary Artery Disease ; mortality ; therapy ; Diabetes Mellitus, Type 2 ; complications ; Drug-Eluting Stents ; Female ; Humans ; Insulin Resistance ; Male ; Middle Aged ; Proportional Hazards Models

Objective To evaluate the hypersusceptibility of Astragaloside injection on animal,and provide reference for clinical use with active systemic anaphylaxis (ASA),passive cutaneous anaphylaxis (PCA) and determination of serum sample titer.Methods ASA:Guinea pigs was ip with 0.4,1.6 mg/kg Astragaloside injection five times every other day.On the eleventh day after the last administration,the test substance was quickly injected to fore limb vein,and animal allergy symptoms were observed within 30 min.PCA:Astragaloside injection was ip injected to rats five times every other day and antiserum was collected.The antiserum was appropriately diluted,and sc injected to another group rats for passive sensitization.About 48 hours later,Astragaloside was quickly iv to rats,and the skin allergy was observed.Meanwhile,the antibody titer of the antiserum was determined.Results ASA:Astragaloside injection of 0.4,1.6 mg/kg in guinea pigs did not show any allergic reaction,that is,ASA was negative;PCA:Astragaloside injection of 0.5,2.0 mg/kg in rats did not show any allergic reaction,and Astragaloside specific antibodies were not determined in serum samples.That is,PCA was negative.Conclusion The results of ASA and PCA were negative in the experimental dose,and there was no specific antibody against Astragaloside in the serum prepared by PCA,which indicated that the possibility of hypersensitivity reaction was weak in clinical use.

Objective:To investigate the impact of the CD4+CD25nt/hiCD127lo regulatory T cell subset frequency on the immune status and disease progression of Chinese HIV-1 infected individuals.Methods:83 untreated HIV-infected individuals and 312 healthy control individuals of four distinct age groups were enrolled in the research. The CD4+ T cell absolute counts, phenotypes and frequency determination of CD4+CD25nt/hiCD127lo Regulatory T cell subsets was performed on freshly obtained whole blood samples by 3-color immune staining flow cytometry. The HIV-1 specific cellular immune function was test at single cell level by ELISpot. The corresponding plasma viral load was determined by NASBA.Results:The frequency of peripheral CD4+CD25nt/hiCD127lo regulatory T cells of HIV infected individuals in distinct disease progression status was dissimilar in China , and significantly increased in contrast to the healthy controls(P

To obtain higher potency and specificity, a series of 7-alkoxy analogues of illudalic acid was synthesized on the base of structure-activity relationship (SAR). All of these compounds exhibited submicromolar inhibition of the enzyme when tested against human leukocyte common antigen-related phosphatase (LAR) (for example, for 15e, IC50 = 180 nmol x L(-1)). They represent the most potent small-molecule inhibitors of LAR so far. These analogues also display excellent selectivity for LAR over other protein tyrosine phosphatases (PTPs) except for the highly homologous PTPsigma. The compound 15f is of 120-fold selectivity for LAR versus PTP-1B inhibition. The development of potent enzyme-specific inhibitors is so important that they may serve both as tools to study the role of LAR and as therapeutic agents for treatment of type II diabetes.
Coumarins ; chemical synthesis ; chemistry ; pharmacology ; Enzyme Inhibitors ; chemical synthesis ; chemistry ; pharmacology ; Inhibitory Concentration 50 ; Molecular Structure ; Receptor-Like Protein Tyrosine Phosphatases, Class 2 ; antagonists & inhibitors ; Structure-Activity Relationship