Animals ; Drug Tolerance ; Glycogen Synthase Kinase 3 ; metabolism ; Glycogen Synthase Kinase 3 beta ; Morphine ; Phosphorylation ; Rats ; Signal Transduction

Objective To explore the neuroprotection of Pabing Formula I Granules for Parkinson's disease (PD) rats. Methods PD rats were induced with injection of 6-hydroxy dopamine twice stereotaxically into the left striatum. 40 rats modeled successfully were divided into model group (n=12), high dose group (n=14) and low dose group (n=14), and the other 8 rats were as normal group. The high dose group and low dose group received Pabing Formula I Granules 18 g/kg and 9 g/kg respectively, while the model group and normal group were given distilled water at the same volume, once a day for 32 d. Then, they were assessed with rotation test. The activities of superoxide dismutase (SOD), the levels of glutathione (GSH) and malonaldehyde (MDA) of their left striatum were measured, and the expression of P-Akt (ser 473), Bcl-2, and Bax in substantia nigra were detected with immunohistochemistry. Results The rotation released was significant different among the model, high dose and the low dose groups after treatment (P<0.01), with the activities of SOD (P<0.01) and the content of GSH (P<0.01) increasing and the content of MDA (P<0.01) descreasing. There was significant difference in the content of GSH (P<0.01) and MDA (P<0.01) between the high and the low dose groups. There was significant difference in expression of P-Akt (ser 473), Bcl-2 and Bax among the model, high dose and the low dose groups, as well as the Bcl-2/Bad ratio (P<0.05). Conclusion Pabing Formula I Granules plays neuroprotective effect through enhancing antioxidation and eliminating free radicals ability and Akt signaling pathway, which appears as dose-effect relationship.

Objective To study on the characterization of MICA/B genetic polymorphism in a northern Chinese Hunan Han population.Methods Ninty-five unrelated individuals were involved in this study and MICA/B genotypes were determined by two methods:PCR-sequence-specific primers (PCR-SSP) and PCR-sequence-based typing (PCR-SBT).Results In northern Hunan Han population,eleven MICA alleles were found,among which MICA * 010 (28.95％),MICA * 008 ∶ 01 (20.53％) and MICA * 002 ∶ 01 (15.79％) were the common alleles.Five MICA-STR(short tandem repeat) alleles were found,among which MICA * A5 (37.89％) and MICA * A5.1 (21.05％) predominated.In this population,ten MICB alleles were found.The common alleles were MICB * 005 ∶ 02/* 010 (58.42％),MICB * 002 ∶ 01 (10.00％),and MICB * 008 (7.89％).Two kinds of MICA-MICB haplotypes were MICA * 004-MICB * 004 ∶ 01 and MICA * 010-MICB * 005 ∶ 02/010 in significant linkage disequilibrium.This study also showed MICA/B gene with high polymorphism in different populations.Conclusion MICA/B alleles distribution in northern Hunan Han population with its unique characteristics.

Objective To develop a sensitive,specific, simple and rapid quantitative real-time PCR (Q-PCR) assay for detection of Staphylococcus aureus with SmartCycler.Methods According to the nuc gene sequences specific to S.aureus, a pair of primers and one TaqMan probe were designed. An internal amplification control (IAC) which is a chimeric double-stranded DNA constructed from a fragment of the Listeria monocytogenes hly gene flanked by the nuc-specific target sequences was added to the reaction system. This IAC was detected using a second TaqMan probe labeled with a different fluorophore. The performance of the nuc-IAC Q-PCR was evaluated using artificially contaminated drinking water and commercial UTH whole milk samples spiked with ATCC 6538.Results The nuc-IAC assay could be used reliably for detection with a sensitivity of 5 copies of linear plasmid DNA per reaction, 10 fg of genomic DNA in 62.5% of the reactions or 50 cfu/ml S.aureus cells with 50% probability. The quantification was linear (r~2≥0.998) over a 6-log dynamic range, with a PCR efficiency over 0.967. The 5×10~2 CFU per 25 ml mimic sample of drinking water or milk could be detected by this assay consistently and quantifiably.Conclusion The nuc-IAC Q-PCR assay for S.aureus is developed. It could not only be applied for the quantitative detection of S.aureus, but also prevent the false negatives and underestimations of contamination loads due to PCR failure.

Objective The aim of this prospective observational study was to analyze the prevalence and the predictive factors of hemorrhagic events after abdominal paracentesis in patients with acute-on-chronic liver failure (ACLF).Methods ACLF patients who received at least one episode of abdominal paracentesis were prospectively enrolled between January 2010 to December 2013. Prevalences of intraperitoneal and abdomen hemorrhage complications were examined. t test was performed for continuous variables and chi-square test was performed for categorical variables.Binary Logistic regression was used to analyze the risk factors of hemorrhage.Results A total of 525 abdominal paracenteses were carried out on 185 ACLF patients within a 4-year period,with 289 (55 .0%)for diagnostic purpose and 236 (45 .0%)for therapeutic purpose.A total of 16 (3.0%)hemorrhagic complications were identified, with 4 cases of abdominal wall hematomas and 12 cases of intraperitoneal hemorrhage.Patients were divided into hemorrhage group and non-hemorrhage group according to this complication.Age,gender, Child-Pugh score,volume of ascitic fluid removed,underlying cirrhosis,platelet count and thrombin time were not significantly different between two groups (all P > 0.05 ).Patients with bleeding events had lower fibrinogen levels and higher prothrombin time,international normalized ratio,activated partial thromboplastin time and model for end-stage liver disease score (all P <0.05).After adjustment of other factors,multivariate regression analysis indicated that low fibrinogen level was the only independent predictor of hemorrhagic complication (OR=0.105,95%CI :0.018-0.608,P =0.012).Conclusion Low fibrinogen level is the independent predictor of severe hemorrhagic complications following paracenteses in patients with ACLF.

Objective To investigate the development of tidal breathing lung function in very low birth weight infants with bronchopulmonary dysplasia(BDP).Methods Two hundred and sixty-two very low birth weight infants hospitalized in Wenzhou Children′s Hospital were enrolled as objects.All infants were given the tidal breathing pulmonary function test within a week before discharge and at the corrected age of 6 to 8 months.According to clinical diagnosis,they were divided into BPD group(n=65) and non-BPD group(n=197),and BPD group were divided into mild group(n=31),moderate group(n=20) and severe group(n=14) according to the severity.The lung function indexes were compared between different groups.Results The results of the test within a week before discharge displayed that the respiratory rates in the BPD groups were higher than those in the non-BPD group(all P＜0.05).The peak expiratory flow(TPEF),tidal expiratory flow at 75%,50%,and 25% tidal volume(TEF75,TEF50,TEF25) in moderate to severe BPD group were higher than those in other groups(all P＜0.05),while in mild BPD group were higher than those in non-BPD group(all P＜0.05).The ratio of time to peak tidal expiratory flow to total expiratory time (TPEF/TE),ratio of volume to peak tidal expiratory flow to total expiratory volume (VPEF/VE) were lower in BPD group than those in non-BPD group,the decline was more obvious as the BPD was more serious(all P＜0.05).No significant differences were found between groups in tidal volume(P＞0.05).The result at the corrected age of 6 to 8 months displayed that TPEF,TEF75,TEF50,TEF25 in severe BPD group were still higher than those in any other group(all P＜0.05),while TPEF/TE,VPEF/VE were lower than those in any other group(all P＜0.05),no significant differences were found between other groups in other indicators(P＞0.05).Conclusion Preterm infants BPD have different degrees of lung injury,but as the age grows some lung function indexes can improve gradually(at the corrected age of 6 to 8 months).However,early severe small airway obstruction is still serious.Therefore,it′s important to prevent and treat BPD for the prevention and regulation of respiratory tract disease in future.

Objective To evaluate the value of ultrasound (US) in assessment knee joint inflammation in patients with juvenile rheumatoid arthritis(JRA).Methods US scans of the knees obtained in 30 children at clinically active stage; JRA was compared with those obtained in 30 healthy children and 10 JRA patients in clinical remission.Results Changes in synovial membrane thickness and presence of fluid in suprapatellar bursa showed statistically significant differences between JRA patients with active disease and the other subjects.Alterations in contour of the articular cartilage were demonstrated in 10 knees of patients with JRA.Conclusion US is a simple sensitive and reliable methods for the assessment and monitoring of knee joint involvement in JRA.

OBJECTIVETo explore the clinical efficacy of the arthroscopic Mender II stapler for the treatment of patients with meniscus anterior horn injury needing meniscal suture repair.

METHODSAmong 47 patients with meniscus anterior horn injury, 29 patients were male and 18 patients were female, ranging in age from 12 to 31 years old, with a mean age of (20.53± 4.12) years old. The duration of disease ranged from 3 to 35 days, and the average duration was (12.43±5.74) days. The Mender II stapler was used to carry out arthroscopic suture from outside to inside. The Lysholm knee scoring system was used to evaluate and analyze preoperative and postoperative symptoms, such as pain, limping embolism and so on.

RESULTSForty-six patients were followed up, and the duration ranged from 12 to 48 months, with a mean of (20.53±4.12) years. The incision healed at the first stage without important vessels and nerves injuries. The symptoms of the locked knee joint disappeared, and symptoms such as pain, limp, swelling and limitation of activity improved. The Lysholm score increased from preoperative 52.33±7.31 to postoperative 86.74±6.92.

CONCLUSIONUsing Mender II stapler to treat patients with meniscus anterior horn injury who were treated with arthroscopic suture from outside to inside is effective to improve symptoms, and to obtain good short-term results.

Adolescent ; Adult ; Arthroscopy ; methods ; Child ; Female ; Humans ; Male ; Menisci, Tibial ; surgery ; Suture Techniques ; Tibial Meniscus Injuries

OBJECTIVETo study 3 different strategies of urine drainage following hypospadias urethroplasty, the clinical nursing in their application, and their effects.

METHODSWe retrospectively analyzed the clinical data of 595 cases of hypospadias treated by urethroplasty. After surgery, 133 of the patients underwent urine drainage by suprapubic cystostomy (group A), 202 by urethral stent- tube indwelling (group B), and 260 by early initiative micturition with the urethral stent-tube (group C). All the patients received routine postoperative nursing care required for hypospadias repair.

RESULTSOperations were successfully completed in all the cases. Group C showed a remarkably shorter hospital stay and lower incidence rates of urinary fistula and urethral stricture than groups A and B (P<0.05), but there were no significant differences in the three indexes between A and B (P<0.05).

CONCLUSIONFor urine drainage following hypospadias repair, early initiative micturition with the urethral stent-tube can significantly reduce postoperative complications, decrease difficulties and workload of nursing care, and shorten the hospital stay of the patient.

Cystostomy ; Drainage ; methods ; Humans ; Hypospadias ; surgery ; Length of Stay ; Male ; Postoperative Complications ; prevention & control ; Reconstructive Surgical Procedures ; Retrospective Studies ; Stents ; Urethra ; surgery ; Urethral Stricture ; prevention & control ; Urinary Fistula ; prevention & control ; Urine ; Urologic Surgical Procedures, Male

OBJECTIVETo screen human stem cell factor (hSCF) mimetic peptides in vitro with a phage-display random peptide library.

METHODSPhage clones with high hSCF receptor (rc-kit/Ig 1-3)-binding activity was screened from phage-displayed random hepta/dodecapeptide library by phage enzyme-linked immunosorbent assay (ELISA). Phage single DNA was extracted and sequenced. Four kinds of peptide with higher c-Kit/Ig 1-3 binding activity were chosen for synthesis and characterized by using cell proliferation assay with 3-(4,5-dimethylthiazol-2-yl)2,5-diphenyltetrazolium bromide (MTT) method in UT-7 cells.

RESULTSEleven Ph.D.-C7C clones and eight Ph.D-12 phage clones with high hSCF receptor-binding activity were selected from phage-displayed random hepta/dodecapeptide library, respectively. Sequence analysis showed there were no homologous sequence between hSCF and these screened mimetic peptides except one homologous sequence DPSPHTH found in heptapeptide library. All these four synthesized peptides (CE3, CE16, LE4, and LE20), particularly CE16 and LE20, stimulated UT-7 cell proliferation.

CONCLUSIONFour hSCF mimetic peptides were successfully isolated from phage-displayed random peptide library..

Humans ; Peptide Library ; Peptides ; genetics ; isolation & purification ; Stem Cell Factor ; genetics ; isolation & purification