AIM: To investigate the efficacy and safety of needle revision with 5-fluorouracil (5-FU) on the dysfunctional filtering blebs after trabeculectomy and to assess the factors that may impact the success.
METHODS:Eighty- three eyes in 76 patients underwent the needle revision and 5-FU subconjunctive injection for the dysfunctional blebs after trabeculectomy and were followed up for 12mo. The intraocular pressure ( IOP), the number of drugs, corneal endothclium, bleb morphology and complications were observed and recorded.
RESULTS: IOP decreased significantly from 35. 3 ±5. 8mmHg(1kPa = 7. 5mmHg) of pre - needling to 17. 0 ±4. 3mmHg of post - needling ( P < 0. 01 ); the average numbers of medications decreased significantly from 1. 7±0. 9 of pre-needing to 0. 4±0. 7 of post-needing (P<0. 01). At 12mo after needling, the success rate of filtering blebs was 89. 2% and the complete success rate was 69. 9%. The Kaplan - Meier survival analysis estimated mean survival period was 11. 0mo (95% CI: 10. 3 - 11. 6). Statistically, there were no significant difference on needling effect with reference to the types of glaucoma, the use of mitomycin C ( MMC ) during the previous filtration surgery, the ages of patients, the intervals of needling operation from previous trabeculectomy, while there were significant difference on needling effect with reference to bleb appearance before needling, and the mean number of needling in patients that had surgery within 3mo were less than those who had surgery for more than 3mo.
CONCLUSION: The needle revision combined with 5-FU is a safe, effective and simple method. Dysfunctional blebs should be treated early after trabeculectomy.

OBJECTIVE: To investigate the inhibition effects of Tianshen Yizhi Recipe (TSYZR), a compound traditional Chinese herbal medicine, on decreased expression of nicotinic acetylcholine receptor (nAChR) and the neurotoxicity as well as lipid peroxidation induced by beta-amyloid peptide (Abeta) in human SH-SY5Y neuroblastoma cells. METHODS: The SH-SY5Y cells were treated by a certain concentration of TSYZR, and then exposed to Abeta(25-35). Methyl thiazolyl tetrazolium reduction assay was carried out to understand the influences of the drugs on cellular viability. Expressions of nAChR subunits (alpha3 and alpha7) at protein and mRNA levels were detected by Western-blotting and reverse transcription polymerase chain reaction, respectively. Lipid peroxidation was measured by thiobarbituric acid to observe the capacity of antioxidant of the drugs. RESULTS: TSYZR at a safe concentration could increase alpha7 protein in the cells, inhibit decreased expressions of alpha3 and alpha7 nAChR subunit proteins, prevent lower expression of alpha7 mRNA in SH-SY5Y cells induced by Abeta, reduce the neurotoxicity and lipid peroxidation resulting from Abeta, but had no significant effect on the lower expression of alpha3 mRNA. CONCLUSIONS: TSYZR can up-regulate the expression of alpha7 nAChR subunit protein and prevent decreased expressions of nAChRs and neurotoxicity as well as lipid peroxidation induced by Abeta. This drug may play an important therapeutic role in treatment of Alzheimer disease.

OBJECTIVETo study the effects of beta-amyloid peptide (Abeta) on cell membrane lipids and cholinergic receptors of human neuroblastoma cells.

METHODSHuman SH-SY5Y neuroblastoma cells were treated with different concentrations of Abeta(1-42) with and without pretreatment of vitamin E. MTT [3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide] reduction, lipid peroxidation, protein oxidation and phospholipids were measured by spectrophotometry. Levels of cholesterol and unbiquinone were determined by high-performance liquid chromatography (HPLC). The numbers of cholinergic receptor binding sites were determined by receptor binding assay and the protein levels of nicotinic receptor alpha3 and alpha7 subunits were studied by Western blotting.

RESULTSSH-SY5Y cells showed decreased reduction rates of MMT and phospholipids, and increased lipid peroxidation and protein oxidation after exposure to Abeta (0.1 micromol/L) as compared to the control. The number of cholinergic receptor binding sites, the protein level of nicotinic receptor alpha3 and alpha7 subunits and the content of ubiquinone decreased in cells treated with high dose of Abeta (1 micromol/L). Although the level of cholesterol was not changed in any way, vitamin E partially prevented the neurotoxic effects of Abeta.

CONCLUSIONbeta-amyloid peptide reduces the level of cell membrane lipids and cholinergic receptors in human SH-SY5Y neuroblastoma cells, likely through the induction of an enhanced oxidative stress.

Amyloid beta-Peptides ; administration & dosage ; metabolism ; toxicity ; Cell Line, Tumor ; Cell Membrane ; metabolism ; Cholesterol ; metabolism ; Dose-Response Relationship, Drug ; Humans ; Lipid Peroxidation ; drug effects ; Malondialdehyde ; metabolism ; Membrane Lipids ; metabolism ; Neuroblastoma ; metabolism ; pathology ; Oxidative Stress ; drug effects ; Peptide Fragments ; administration & dosage ; metabolism ; toxicity ; Phospholipids ; metabolism ; Receptors, Nicotinic ; metabolism ; Ubiquinone ; metabolism ; Vitamin E ; metabolism ; pharmacology

OBJECTIVETo explore the expression of uncoupling protein-2 mRNA in brown adipose tissue, white adipose tissue and skeletal muscle of diet-induced obesity-resistant (DIO-R) rats.

METHODSFifty male Sprague-Dawley (SD) rats were randomly divided into a control group and a high-fat group and fed with basic diet and high-fat diet respectively for 13 weeks. DIO-R and DIO rats were selected according to their body weight. The change of body weight and the intake of total calorie were observed. Reverse transcription-polymerase chain reaction (RT-PCR) was used to measure the expression of UCP2 mRNA in rat.

RESULTSBody weight and total calorie intake in DIO-R rats (425.1 +/- 27.1) g, (31,693 +/- 946) kJ were significantly lower than those in DIO rats (489.7 +/- 20.5) g, (34,363 +/- 1465) kJ. The peak area of UCP2 mRNA in white adipose tissue in DIO-R rats was 352 +/- 30 and in DIO rats was 101 +/- 12. The peak areas of UCP2 mRNA in skeletal muscle in DIO-R and DIO rats were 130 +/- 15 and 170 +/- 12, respectively. The peak areas of UCP2 mRNA in brown adipose tissue of DIO and DIO-R rats were 124 +/- 14 and 147 +/- 19, respectively.

CONCLUSIONThe expression of UCP2 mRNA in white adipose tissue of DIO-R rats increased significantly. These results suggest that obesity-resistance was associated with a tissue-specific increase in UCP2 expression.

Adipose Tissue ; drug effects ; metabolism ; Animals ; Body Weight ; drug effects ; Dietary Fats ; administration & dosage ; Gene Expression ; genetics ; Ion Channels ; Male ; Membrane Transport Proteins ; genetics ; Mitochondrial Proteins ; genetics ; Muscle, Skeletal ; drug effects ; metabolism ; Obesity ; etiology ; genetics ; RNA, Messenger ; genetics ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reverse Transcriptase Polymerase Chain Reaction ; Uncoupling Protein 2

OBJECTIVETo discuss the advantages and disadvantages of transcallosal-interforniceal approach for resection of the third ventricle and the pineal region tumors.

METHODSThe clinical data of 24 cases from July 2008 to March 2011 were retrospectively analyzed. All 24 patients operated by transcallosal-interforniceal approach, among them, there were 14 males and 10 females, with a average age of 32 years ranged from 17 to 65 years and with medical history from 1 month to 10 years. Issues of managements were analyzed and discussed, including reasonable incision design, the managements of draining vein, the site and the length of the incision of the corpus callosum, tumor exposure in increased intracranial pressure, prevention of complications, skills of surgery, treatments of obstructive hydrocephalus, and postoperative managements.

RESULTSIn the 24 cases, there were 5 cases of pineal parenchymal tumors, 4 cases of germinoma, 3 cases of astrocytoma, 2 cases of hypothalamus hamartomas, 2 cases of ependymoma, 2 cases of mixed germ cell tumour, 2 cases of malignant lymphomas, 1 case of pineoblastoma, 1 case of dermoid cyst, 1 case of chordoid glioma and 1 case of craniopharyngioma. After surgeries, total removal achieved in 9 cases, and subtotal removal in 10 cases and partial removal in 5 cases. Operative mortality was 0. Combined third ventriculostomy were performed in 13 cases. Postoperative complications occurred in 5 cases, including frontoparietal epidural hematoma in 1 case; postoperative short-term memory loss in 3 cases, postoperative memory loss within 1 month in 2 cases and within 3 months in 1 case; frontoparietal subdural effusion in 1 case and the effusion disappeared without any treatment. Ventriculoperitoneal shunt was performed in 1 case.

CONCLUSIONSThe transcallosal-interforniceal approach is ideal for the removal of tumors in third ventricle as well as majority tumor in posterior of third ventricle in a skillful hand. Tumor resection combined with third ventriculostomy is the significant advantages in the approach.

Adolescent ; Adult ; Aged ; Brain Neoplasms ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Microsurgery ; Middle Aged ; Retrospective Studies ; Third Ventricle ; Young Adult

OBJECTIVETo evaluate different methods by treating water-decocted liquid of 6 Chinese medical herbs and 4 co-prescription respectively with alcohol, ultrafilter, macroporousresin and clarifier.

METHODThe contents of target component in those extracts were determined with HPLC or titration, and quantitative and qualitative determination of the impurity components, such as polysaccharide and protein, was made.

RESULTEach method showed its advantages and disavantages.

CONCLUSIONDifferent method can be chosen according to the clinical and preparation demands or the characteristic of components.

Drug Combinations ; Drugs, Chinese Herbal ; administration & dosage ; analysis ; isolation & purification ; Methods ; Plants, Medicinal ; chemistry ; Polysaccharides ; analysis

Infectious bursal disease virus (IBDV), the causative agent of a highly contagious disease in chickens, carries a small nonstructural protein (NS). In this study, vvIBDV Gx-VP5 genes were cloned into plasmid pET30a( + ) and expressed in E. coli with IPTG inducing. BALB/c mice were immunized with the purified recombinant fusion protein. SP2/0 myeloma cells and spleen cells of BALB/c mice were fused by PEG(MW1500), three hybridoma cell lines were examined by indirect ELISA and clone for three times by limited dilution, and were named as 4B4, 6D12, 3E8. The subtype of the monoclonal antibodies were IgG1 with a subtype identified ELISA kit, and light chains were kappa. The ascites titers of monoclonal antibodies were 5 x 10(4), 3.5 x 10(4), 3 x 10(4) by indirect ELISA, respectively. Indirect ELISA and Western blot results showed that the monoclonal antibodies only acted with VP5 protein, IF analysis indicated that three monoclonal antibodies acted with IBDV Gt. There were specific fluorescence in detected Vero E6 cells which transient expressed VP5 protein by IFA. Therefore, monoclonal antibodies specific to IBDV VP5 proteins are specific method for detected VP5 proteins, and base on establish stabilize expressed VP5 protein Vero cell lines to research IBDV VP5 protein function.
Animals ; Antibodies, Monoclonal ; biosynthesis ; immunology ; Antibodies, Viral ; biosynthesis ; immunology ; Chickens ; Escherichia coli ; genetics ; metabolism ; Female ; Hybridomas ; secretion ; Immunization ; Infectious bursal disease virus ; immunology ; Mice ; Mice, Inbred BALB C ; Viral Nonstructural Proteins ; immunology

OBJECTIVETo develop a multiplexed mutagenically separated PCR (MS-PCR) for single nucleotide polymorphism (SNP) loci typing in mitochondrial DNA coding regions and to study the applications in investigating the allele frequencies and haplotypes of four SNP loci in mitochondrial DNA coding regions in Chinese Chengdu Han population.

METHODSFour SNP loci C12705T, A8701G, G8584A and C10400T, two allele specific forward primer with 4 bases different in size and a common reverse primer were designed for SNP typing. The primers simultaneously were amplified in a single tube. The genotyping of SNPs was determined by the two allele specific fragments different in size after polyacrylamide gel and silver staining.

RESULTSThe different SNP loci comprised a single band with different size respectively. Typing results were completely consistent with those by direct sequencing. The allelic frequencies of C12705T, A8701G, G8584A and C10400T were 0.3813/0.6187, 0.4813/0.5187, 0.8250/0.1750 and 0.4938/0.5062 respectively. A total of 6 different haplotypes was identified and the genetic diversity reached 0.7137.

CONCLUSIONMultiplexed MS-PCR is a simple, rapid, accurate and efficient method for SNP typing, which will be very powerful for SNPs in the database establishing of mitochondrial DNA coding regions, the testing of forensic and population genetics research.

Base Sequence ; DNA, Mitochondrial ; chemistry ; genetics ; Gene Frequency ; Genetic Variation ; Genotype ; Humans ; Polymerase Chain Reaction ; methods ; Polymorphism, Single Nucleotide ; genetics ; Sequence Analysis, DNA

OBJECTIVE: To explore the role of diaphgram fatigue in the death from hanging with bound upper limbs of rabbits. METHODS: Rabbits were hanged with upper limbs bound, then the data of EMGdi were gathered RESULTS: By analyzing power spectral of EMGdi in experiment, we compare the ratio change of H/L between pre-experiment and post-experiment. There is a significance decrease of the ratio of H/L, so it indicates that diaphgram fatigue does exist. CONCLUSION Diaphgram fatigue plays an important role in the death from hanging with limbs of rabbits bound.
Animals ; Asphyxia/physiopathology* ; Cause of Death ; Diaphragm/physiopathology* ; Electromyography ; Female ; Forensic Medicine ; Male ; Muscle Fatigue ; Rabbits

OBJECTIVETo investigate the frequencies of GSTM1, GSTT1 and GSTP1 polymorphisms in Dong, Yi and Yao ethnic groups from Guizhou.

METHODSIn 321 volunteers who were population-based, GSTM1 and GSTT1 polymorphisms were analyzed by a multiplex-PCR procedure, whereas GSTP1 polymorphism was analyzed by PCR-RFLP method.

RESULTSNull genotype for GSTM1 and GSTT1 was 59.6%-71.2% and 39.4%-72.5%, respectively. The genotypic distribution of GSTP1 was 63.3%-75% for AA, 23.2%-35.8% for AG, 0-1.9% for GG, whereas the allelic frequencies were 81.2%-86.6% for the A allele, and 13.4%-18.8% for the G allele.

CONCLUSIONThere is a significant relationship between GSTT1 frequencies and ethnic populations.

Aged ; Aged, 80 and over ; Asian Continental Ancestry Group ; genetics ; China ; ethnology ; Ethnic Groups ; genetics ; Female ; Gene Frequency ; genetics ; Genotype ; Glutathione S-Transferase pi ; genetics ; Glutathione Transferase ; genetics ; Humans ; Male ; Middle Aged ; Mutation ; Polymorphism, Genetic