Objective: To establish the methods for extraction and isolation of punicalagin from pomegranate peel, and further study the purification and quantification of punicalagin. Methods: Using an ultrasonic-assisted extraction method, punicalagin in pomegranate peel was extracted at room temperature by 50% ethanol with 20-fold volume of raw material. The content of punicalagin in the crude extract was determined by HPLC. To optimize the purification process of punicalagin, static adsorption and desorption experi-ments were employed to study five kinds of macroporous adsorbent resins (D101, A8-8, NKA-9, HPD-100 and HPD-500) for the one with the highest purification efficacy of punicalagin. In addition, the technical parameters of the macroporous adsorbent resin were opti-mized to obtain punicalagin with higher purity. Punicalagin was further separated and purified by using a reverse phase MCI GEL CHP20P column. Results:HPD500 resin showed the best ability to absorb and separate punicalagin in among five kinds of macro-porous adsorbent resins. The best technical parameters were as follows:the mass concentration of sample solution was 15 mg·ml-1 , the loading amount was 2BV, the pH was 2 and the eluting solvent was 8BV of 30% ethanol. With the best process as described a-bove, the content of punicalagin extracted from pomegranate peel increased from 10. 3% to 30. 7%. The obtained punicalagin could be further purified to 61. 3% from 30% in ethanol eluate by the reverse phase MCI GEL CHP20P column. Conclusion:HPD500 resin is the most effective in the purification of punicalagin from pomegranate peel, and the content of punicalagin can be dramatically increased after the purification by a reverse phase MCI GEL CHP20P column. The optimized process shows good reproducibility and stability.

Objective To investigate the drug resistance and genotype of methicillin-resistant Staphylococcus (MRS), and to study the epidemiology of drug resistance in Staphylococcus. Methods Drug susceptibility tests were performed for 138 Staphylococcus strains clinically isolated, and mecA gene was detected with PCR. For mecA positive strains, Staphylococcal cassette chromosome mec (SCCmec) gene was detected by two multiplex PCR assays. Results Seven (10.8%) out of 65 Staphylococcus aureus strains were methicillin-resistant Staphylococcus aureus (MRSA) strains, and 44 (60.3%) out of 73 coagulase negative Staphylococcus strains were methicillin-resistant coagulase negative Staphylococcus (MRCNS)strains. There was statistical significance on the difference of isolation rates (x2 = 37. 05, P ＜0.01). No vancomycin or nitrofurantoin resistant strain was found. There were 52 (52/138, 37.7%) mecA positive strains, including 16 SCCmec type Ⅰ strains, 1 type Ⅱ strain, 13 type Ⅲ strains, 9 type Ⅳ strains and 4 type Ⅴ strains. Conclusions Drug resistance in MRS is increasingly serious. MRCNS strains are more popular than MRSA in clinic, and SCCmec Ⅰ and Ⅲ may account for most infections.

Crigler-Najjar Syndrome ; complications ; diagnosis ; Female ; Humans ; Infant ; Jaundice ; etiology

OBJECTIVE: To study the correlation of daily living activities with location and severity of trau- matic brain injury (TBI) and to provide a theoretical basis for improving the accuracy of expert opinion. METHODS: Five hundred and one cases of patients with TBI were selected. Detailed records included following: pre-injury situation, location and severity of injury, treatment and education. Daily living activi- ties scale (Barthel index) was applied to test the subjects' daily living activities. The relevance among location and severity of TBI and Barthel index was statistically analyzed. RESULTS: In mild TBI group, there was no significant difference in Barthel index among each location (P>0.05). In moderate TBI group, there were significant differences in Barthel index between subarachnoid hemorrhage and cerebral lobe injury, also between parietal, occipital lobes injury and frontal lobe injury, parietal, occipital lobes injury and temporal lobe (P<0.05), respectively, whereas no significant difference in Barthel index between frontal lobe injury and temporal lobe injury (P>0.05). In severe TBI, there were significant differences in Barthel index between every two different locations (P<0.05). CONCLUSION There is some correlation between the location of TBI and Barthel index, which provides an important reference value for analyzing and determining daily living activities after TBI.
Activities of Daily Living ; Adult ; Brain Injuries/rehabilitation* ; Female ; Humans ; Male ; Outcome Assessment, Health Care ; Trauma Severity Indices

Actins ; analysis ; Antigens, CD34 ; analysis ; Carcinoma, Papillary ; classification ; metabolism ; pathology ; Female ; Humans ; Immunohistochemistry ; Keratin-19 ; analysis ; Keratin-20 ; analysis ; Muscle, Smooth ; chemistry ; Pancreatic Neoplasms ; classification ; metabolism ; pathology ; Proto-Oncogene Proteins c-kit ; analysis ; Receptors, Estrogen ; analysis ; Receptors, Progesterone ; analysis

Objective To evaluate the application of high-throughput shell vial assay in a clinical laboratory for detection of respiratory viruses from patients with ILI in Guangzhou between January and June, 2009. Methods Six hundred and fifty-two pharyngeal swab specimens were taken from ILI patents. Centrifugation-enhanced shell vials including 4 cell lines (MDCK, Hep-2, LLC-MK2 and MRC-5) were used for culture of respiratory viruses for 2-3 days. The cultures were identified by observation of cytopathic effect (CPE) , hemmaglution or hemmadsorption test as well as immunofluorescence staining. Results A total of 161 swab samples (24.69% ,161/652) were shown to have any one of the 5 common respiratory viruses including influenza A viruses ( 38. 51% , 62/161 ), influenza B virus ( 54. 65% , 88/161 ), parainfluenza viruses (4. 96% , 8/161 ) , adenovirus ( 1. 24% , 2/161 ), and respiratory syncytial virus (0. 62% ,1/161). The turnaround time was 2d for influenza viruses, 3d for adenovirus and parainfluenza viruses respectively. Conclusions (1) The shell vial method was effective, rapid and high throughout for the detection of respiratory viruses in clinical laboratories.(2)Influenza viruses were dominant in the swab samples from patients with ILI in Guangzhou between January and June with the highest appearance in the summer influenza B vires was the most common pathogen in patients with ILI in this study.

Objective To explore the replantation methods of the amputated tisue mass of fingers. Methods Fifteen cases were replanted using the physiological blood circulation replantation and the no physi- ological blood circulation replantation.Results All eleven cases survived with the physiological blood circu- lation replantation,one case failure with no physiological blood circulation replantation.Postoperative follow up ranged from six months to two years,with an average of fifteen months,the function and appearance were satis- factory.According to Hand Surgery of Chinese Medical Association' s functional evaluation in digital replanta- tion,eleven cases were excellent and two cases were good,the excellent and good rates were up to 86.7%. Conclusion For the amputated tissue mass of fingers,the physiological blood circulation replantation is the best choose.

OBJECTIVEThe prostate apoptosis response factor-4 (Par-4) gene was originally identified by differential screening for genes that are up-regulated when prostate cells are induced to undergo apoptosis. Par-4 was found to possess potent apoptotic activity in various cellular systems in response to numerous stimuli. The aim of this study was to explore the effects of small interfering RNA (siRNA) against Par-4 gene on the apoptosis of human bone marrow mesenchymal stem cells (hBMSCs) exposed to glutamate.

METHODSPrimary culture of hBMSCs was carried out and siRNAs targeted Par-4 gene (Par-4-SiRNA) were chemically synthesized. Eukaryocytic expression vector was built and were transfected into hBMSCs with liposome. After selecting with G418, the stable cell clones were treated with glutamate. The expression of Par-4 mRNA was determined by real-time PCR. The apoptosis of hBMSCs was quantified by flow cytometry. Western blotting was used to detect the protein levels of phosphorylated Akt1 (Thr308). Relative Caspase-3 activity was determined by colorimetric assay.

RESULTSThe Par-4-SiRNA-1 and Par-4-siRNA-2 could markedly down-regulate the mRNA levels of Par-4 gene in hBMSCs. With the transfections of Par-4-SiRNA-1 and Par-4-SiRNA-2, the levels of Par-4 mRNA were respectively decreased by 88% and 67%. Both Par-4-SiRNA-1 and Par-4-SiRNA-2 inhibited significantly the apoptosis of hBMSCs induced by glutamate, in which the percentages of apoptotic cells were respectively decreased to 38.80% +/- 3.97% (P < 0.01) and 45.49% +/- 4.32% (P < 0.01) from 60.30% +/- 6.82%. Western blot assays demonstrated that, glutamate down-regulated the expression of phosphorylated Akt1 proteins in hBMSCs (89.07 +/- 6.42 and 28.30 +/- 5.65, respectively, P < 0.01). However, Par-4-SiRNA-1 and Par-4-SiRNA-2 could markedly recover the down-regulation of Akt1 proteins induced by glutamate (63.56 +/- 6.75 and 45.59 +/- 4.88, respectively, P < 0.01). And the relative Caspase-3 activity which was enhanced by the treatment with glutamate (0.1428 +/- 0.0495 and 0.8616 +/- 0.1051, P < 0.01), was suppressed by Par-4-SiRNA-1 and Par-4-SiRNA-2 (0.8616 +/- 0.1051 and 0.6581 +/- 0.0555, respectively, P < 0.01).

CONCLUSIONSiRNA against Par-4 gene could inhibit the apoptosis of hBMSCs induced by glutamate, and its inhibitory effects may be mediated by the up-regulation of phosphorylated Akt1 and the suppression of the relative Caspase-3 activity.

Apoptosis ; genetics ; Apoptosis Regulatory Proteins ; genetics ; Bone Marrow Cells ; cytology ; metabolism ; Caspase 3 ; metabolism ; Cells, Cultured ; Gene Expression Regulation ; Humans ; Mesenchymal Stromal Cells ; cytology ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; RNA, Small Interfering

OBJECTIVERespiratory syncytial virus (RSV) infects nearly all children under two years of age. It is poorly understood why a few children who were infected with RSV develop bronchiolitis that require hospital admission while most have a relatively minor illness. Several recent studies have obtained some indications for the involvement of genetic heterogeneity in RSV bronchiolitis, implying that the clinical outcome of RSV infection perhaps is determined by genetic factors. Regulated on activation, normal T cell expressed and secreted RANTES plays a key role in the pathophysiology of RSV bronchiolitis. The purpose of this study was to explore the genetic association between the RANTES gene promoter -28C/G polymorphism and RSV bronchiolitis in Chinese Han ethnic group population.

METHODSThe study recruited 238 hospitalized patients (186 male and 52 female) under 12 months of age, with a clinical diagnosis of bronchiolitis due to RSV, the sex, age, hospital stay, SaO2 at the time of admission, personal and family history of atopy were recorded. The 288 healthy control subjects (206 male and 82 female), who had no evidence of personal or familial history of atopy and no history of wheezing, were chosen at the same time. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to identify the polymorphism at position -28C/G of the RANTES promoter. The total IgE concentrations in serum samples were measured by enzyme-linked immunosorbent assay (ELISA). The absolute peripheral blood eosinophil counts were measured by using an automated hematology analyzer.

RESULTSThe distribution of RANTES -28C/G gene polymorphism was in accordance with Hardy-Weinberg equilibrium. Compared to control subjects, significant difference was demonstrated for genotypes and allele frequencies of the RANTES -28C/G polymorphism in patients with RSV bronchiolitis (G = 10.22, P < 0.01; chi2 = 9.708, P < 0.01). Compared with the wild type CC, the -28G allele carriers demonstrated a 2.09-fold increased risk of RSV bronchiolitis (OR = 2.09, 95% CI = 1.32 - 3.30, P < 0.01). Interestingly, both the percentage of personal history of atopy and the percentage of family history of atopy for the -28G allele carriers were significantly higher (P < 0.05) than that for those CC homozygotes carriers in RSV bronchiolitis. Compared with the wild type CC, the -28G allele carriers demonstrated a 1.85-fold increased risk of the personal history of atopy (OR = 1.85, 95% CI = 1.01 - 3.38, P = 0.045) and a 1.91-fold increased risk of the family history of atopy (OR = 1.91, 95% CI = 1.03 - 3.54, P = 0.037), and the absolute peripheral blood eosinophil counts for the -28G allele carriers were significantly higher (P < 0.05).

CONCLUSIONThe RANTES gene promoter -28C/G polymorphism is associated with the susceptibility to RSV bronchiolitis, and the -28G allele is an important predisposing factor for the personal history of atopy and the family history of atopy in RSV bronchiolitis.

Alleles ; Bronchiolitis ; genetics ; virology ; Case-Control Studies ; Chemokine CCL5 ; genetics ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Humans ; Infant ; Male ; Polymorphism, Genetic ; Promoter Regions, Genetic ; Respiratory Syncytial Virus Infections ; complications ; genetics

OBJECTIVERespiratory syncytial virus (RSV) infects nearly all children under two years of age. It is not understood why some develop serious bronchiolitis. Whether there is a genetic component is not known. The nature of the association between RSV bronchiolitis and subsequent wheezing remains unknown. interleukin-8 (IL-8) is a potent neutrophil chemokine and activator, which plays a role in virus-induced wheezing diseases. The purpose of this study was to assess the genetic association between the IL-8 gene promoter -251A/T polymorphism and RSV bronchiolitis and post-bronchiolitis wheezing in children.

METHODSTotally 320 children who were hospitalized for bronchiolitis together with positive immunofluorescence for RSV were recruited in this study from Jan. 2002 to Jan. 2004. A group of 272 healthy children were enrolled as controls. The age of these children ranged from 1 to 12 months. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to identify the polymorphism at position-251 of the IL-8 promoter in RSV bronchiolitis and control groups. The total IL-8 and IgE concentrations in serum samples were measured by enzyme-linked immunosorbent assay (ELISA). The patients with RSV bronchiolitis were followed up in order to analyze the occurrence of wheezing post-bronchiolitis.

RESULTS(1) Both A allele and T allele were detected at -251 of the IL-8 promoter; the prevalence of the A allele in RSV bronchiolitis group was 45.6%, as compared with 37.7% in normal group. The prevalence of IL-8-251A allele was significantly different between the two groups (P < 0.05). (2) For genotypes T/T, A/T, A/A in RSV bronchiolitis, level of serum IL-8 were (17 +/- 6) ng/L, (21 +/- 7) ng/L, (24 +/- 9) ng/L, respectively, the difference was significant among the three genotypes (P < 0.01). (3) The prevalence of the A allele in the group who wheezed after the episode of RSV bronchiolitis was 54.6%, as compared with 35.8% in the group who had bronchiolitis but did not go on to wheeze. The prevalence of IL-8-251A allele was significantly different between the two groups (P < 0.05).

CONCLUSIONPolymorphism of IL-8 promoter-251A/T was associated with susceptibility to RSV bronchiolitis in children. The association of IL-8-251A with severe RSV bronchiolitis is most marked in the children who go on to wheeze.

Adolescent ; Alleles ; Bronchiolitis ; complications ; Child ; Child, Preschool ; Chromosome Mapping ; Enzyme-Linked Immunosorbent Assay ; Female ; Genetic Predisposition to Disease ; Genotype ; Humans ; Infant ; Interleukin-8 ; genetics ; Male ; Polymorphism, Genetic ; Respiratory Sounds ; etiology ; genetics ; Respiratory Syncytial Virus Infections ; complications ; virology