Objective To explore the value of monitoring in vertebral and spinal cord operation by the real-time monitoring of the spinal cord in the process of operation.Methods Nineteen cases were included by the real-time monitoring of spinal cord in the process of operation.Japanese Orthopaedic Association(JOA) score was used to evaluate the clinical efficacy during following-up before and discharge after operation,6 months and 12 months after operation.Results Intraoperative ultrasound monitoring in the 19 patients had no symptom of spinal cord injury and other complications within the plant without loosening fracture occurred were bony fusion; the average JOA scores in the patients before operation,discharge after operation,6 months and 12 months after operation were 8.80±1.60,14.00±1.57,14.60±1.61 and 14.80±1.58,respectively.The improvement rate of JOA score for discharge after operation,6 months and 12 months after operation were individually 51.6%,61.3%,and 64.5%.The JOA score after operation was obviously higher than that before operation.The significant difference between the two groups was observed in the experiment (P<0.05).The cervical spinal canal sagittal diameter significantly increased after operation (mean sagittal diameter of the expansion of 6.6 mm),compared with that before the trial (P<0.05).Conclusion The real-time monitoring with ultrasonography during operation can identify the change of spinal cord and provide the image evidence of operative efficiency to avoid the injury in vertebral and spinal cord operation.

OBJECTIVE: To investigate the relationship between the mutation and abnormal expression of p16 gene in peripheral lung carcinoma and its CT manifestations. METHODS: Immunohistochemistry and PCR-SSCP were used to detect P16 protein expression and p16 gene mutation of 52 cases of peripheral lung cancer. All patients were scanned with spiral CT before the operation and proved by pathology. RESULTS: Of the 52 cases of lung cancer tissues, the negative expression rate of p16 gene protein was 53.8% (28/52), and the deletion or mutation rate of the exon 2 was 23.1% (12/52). There were significant statistical differences of p16 gene defect and its protein loss rates among groups of different clinical stages (P < 0.05), but among groups of different tissue types, different differentiation degree p16 gene defect and its protein loss rates showed no significant statistical difference (P > 0.05). In lung cancer patients with CT appearances of thin spicule, speculated protuberance, pleural indentation, and metastasis of lymph node, p16 gene and its protein loss rates were much higher than those without CT manifestations mentioned above (P < 0.05). However, there were no statistical differences among groups of different tumor sizes, with or without lobulation, with or without cavity, and different contrast enhanced CT values (P > 0.05). CONCLUSION p16 gene mutation and abnormal expression may play an important role in the occurrence and development of lung cancer, and it is relative to CT appearances of lung cancer. p16 gene may be used as a predicting index for clinical diagnosis and prognosis assessment.
Adult ; Aged ; Carcinoma, Squamous Cell ; diagnostic imaging ; genetics ; Female ; Gene Deletion ; Genes, p16 ; Humans ; Lung Neoplasms ; diagnostic imaging ; genetics ; Male ; Middle Aged ; Point Mutation ; Tomography, X-Ray Computed

We detected Zika virus (ZIKV) in a febrile case returning from Suriname and entry China from Guangzhou Baiyun International Airport Port.Serum and saliva samples were collected from a suspected case returning from Suriname.We detected ZIKV RNA using real-time fluorescence RT-PCR methods by both in-house reagent and commercial detection kits.RT-PCR detection was carried out with saliva sample and sequence analysis was performed.Phylogenetic tree was constructed to analyze the source of imported cases.Real-time fluorescent RT-PCR result showed that saliva was detected ZIKV RNA positive while for serum was weakly positive.A specific 1 500 bp fragment in size was amplified with saliva sample by RT-PCR.Sequence analysis showed 99％ homologous to the corresponding sequence of Brazil ZIKV (GenBank No.KX197250).Phylogenetic tree indicated it was located on African lineage.According to the epidemiological investigation results,clinical manifestations and nucleic acid detection of case,the suspected case was confirmed to infect Zika virus,being the first case from Suriname into Guangdong Province.

BACKGROUNDBacterial pneumonia in the recipients of liver transplantation (LTX) is a common postoperative complication influencing the prognosis greatly. In this article, the diagnosis and treatment of bacterial pneumonia in 33 LTX recipients are reported.

METHODSFrom February 1999 to January 2003, a total of 103 patients underwent allogeneic LTX at our center; afterwards, a retrospective analysis was made on their postoperative clinical manifestations, including symptoms (expectoration, panting and fever), sign (rale), results of laboratory examinations (white blood cell count and sputum culture of tracheal secretions or pleural fluid culture), and chest X-ray films. The following data of the pneumonia and non-pneumonia groups were collected, and the rank sum test (SPSS 11.0, Wilcoxon's method) was used to analyze the duration of postoperative respirator utilization and the volume of pleural effusion through pleurocentesis or pleural drainage.

RESULTSIn the 103 patients, 33 experienced 53 episodes of bacterial pneumonia during their hospital stay after transplantation, 14 of them (42.42%) had more than three manifestations of the seven mentioned above. The pathogens causing bacterial pneumonia included Pseudomonas aeruginosa (17.48%), Klebsiella pneumoniae (15.53%), Acinetobacter baumannii (10.68%), and Staphylococcus aureus (7.77%). Amilkacin, tienam, ciprofloxacin, vancomycin, etc. were the antibiotics of choice against those bacteria. Acute rejection occurred during the treatment of bacterial pneumonia in 16 patients, and 5 of them died. Wilcoxon's rank sum test of the data indicated that the pneumonia group had longer duration of postoperative ventilator treatment and larger volume of pleural effusion than the non-pneumonia group (P < 0.05).

CONCLUSIONSThe clinical manifestations of pneumonia after LTX might be atypical, and special attention should be paid to the respiratory symptoms and signs within 2 months after LTX. Whenever the diagnosis of bacterial pneumonia is confirmed, consideration should be given to reasonable use of antibiotics and regulation of immunity in addition to other routine therapies.

Adult ; Aged ; Anti-Bacterial Agents ; therapeutic use ; Female ; Humans ; Liver Transplantation ; adverse effects ; Male ; Middle Aged ; Pneumonia, Bacterial ; diagnosis ; drug therapy ; immunology ; Postoperative Complications ; diagnosis ; drug therapy ; immunology ; Retrospective Studies

OBJECTIVETo observe the effect of tetrandrine on activity of collagenase derived from human hypertrophic scar for the sake of clarifying the mechanism as tetrandrine acting on scar.

METHODSThe experimental concentration was controlled below that of cell proliferation inhibited, SDS-PAGE electrophoresis was adopted to separate collagenase from extracellular matrix, and then activated by trypsin analyzed the activity of collagenase with density scanning apparatus. At the same time quantity of extracellular collagen was measured using improved chloraseptine T oxidizing assay, moreover analyzed correlation between activity of collagenase and quantity of extracellular collagen.

RESULTSIn the concentration below the lever of inhibiting fibroblast proliferation, the total activity of collagenase could be significantly increased by tetrandrine with dosage-dependence associated with quantity of extracellular collagen reduced, which was much greater than that of triamcinolone.

CONCLUSIONIncreasing activity of collagenase on degradation of collagen even in a lower concentration was one of the mechanisms of tetrandrine treating hypertrophic scar.

Benzylisoquinolines ; pharmacology ; Cell Proliferation ; drug effects ; Cells, Cultured ; Cicatrix, Hypertrophic ; metabolism ; pathology ; Collagenases ; metabolism ; Fibroblasts ; cytology ; Humans

OBJECTIVETo explore the "hemi-clamshell" approach to the resection of the apical chest tumors, and to evaluate its advantages of operative safety and completeness.

METHODSWe conducted a retrospective review of the records of 27 patients undergoing resection of the primary apical chest tumors from January 1995 to January 2001. Tumor type included NSCLC, sarcoma, neurofibromatosis, esophageal carcinoma. Data collected included clinical presentation, tumor type and involvement, type of resection, complication, and survival.

RESULTSA clinical operation for gross-total resection of tumors and invaded structures was performed on six patients by means of a successful anterior approach. Among other 21 patients on whom a clinical operation was performed by posterior approach, only 13 patients obtained gross-total resection. There were significant difference between the two groups (P < 0.01). The mean duration for follow-up was 29 months, and the overall median survival was 21 months. Median survival in patients undergoing gross-total resection was 29 months, and this is significantly better than in incomplete resection group (P < 0.01).

CONCLUSIONSThe anterior "hemi-clamshell" approach is a successful technique for the exposure and resection of these tumors and invaded structures. Release of symptoms and long-term survival is acceptable if complete resection can be performed.

Adolescent ; Adult ; Aged ; Female ; Follow-Up Studies ; Humans ; Lung Neoplasms ; surgery ; Male ; Middle Aged ; Neoplasms ; surgery ; Prognosis ; Retrospective Studies ; Thoracic Surgical Procedures ; methods ; Thorax ; pathology ; Treatment Outcome

This study aims to investigate the characteristics of genomic variation of pandemic A/H1N1/2009 influenza virus isolated in Fujian Province, China. Complete genome sequence analysis was performed on 14 strains of pandemic A/H1N1/2009 influenza virus isolated from Fujian during 2009-2012. All virus strains were typical low-pathogenic influenza viruses, with resistance to amantadine and sensitivity to neuraminidase inhibitors. Eight genome fragments of all strains were closely related to those of A/California/07/2009 (H1N1) vaccine strain, with > or = 98.2% homology. Compared with the vaccine strain, the influenza strains from Fujian had relatively large variation, and variation was identified at 11 amino acid sites of the HA gene of A/Fujiangulou/SWL1155/2012 strain, including 4 sites (H138R, L161I, S185T, and S203T) involved inthree antigen determinants (Ca, Sa, and Sb). In conclusion, the influenza vaccine has a satisfactory protective effect on Fujian population, but the influenza strains from Fujian in 2012 has antigenic drift compared with the vaccine strain, more attention should therefore be paid to the surveillance of mutations of pandemic A/H1N1/2009 influenza virus.
Antiviral Agents ; pharmacology ; China ; epidemiology ; Drug Resistance, Viral ; genetics ; Genome, Viral ; genetics ; Genomics ; Humans ; Influenza A Virus, H1N1 Subtype ; drug effects ; genetics ; immunology ; physiology ; Influenza, Human ; epidemiology ; prevention & control ; Pandemics ; prevention & control ; Viral Vaccines ; immunology

Objective:To develop a single-tube one-step multiplex nested real-time reverse transcription polymerase chain reaction (RT-PCR) assay for the simultaneous detection of 2019-nCoV, influenza A virus, influenza B virus and internal-control with human-derived gene.Methods:This study included 30 positive specimens for 2019-nCoV nucleic acid detection and 336 screening specimens collected from the arrivals at Guangzhou Baiyun Airport between February 2020 and February 2022. Sixty-four positive specimens of other respiratory pathogens were also collected from the arrivals at Guangzhou Baiyun Airport during the three-year period before the occurrence of COVID19 outbreak in 2020, and 7 positive viral strains of respiratory pathogens were provided by collaborative laboratories. In order to establish a set of multiplex nested real-time RT-PCR assay, a group of primers and probe combinations for a multiplex nested real-time RT-PCR was designed and screened according to a selection of nucleotide conserved regions of the ORF and N genes of 2019-nCoV and the M gene of influenza A and B viruses, while nested amplification primers and probe for the internal-control with human-derived gene were introduced. Then the prepared pseudovirus-positive quality control and sample discs were applied to evaluate the sensitivity and specificity. Clinical specimens were performed to validate the applicability of the method.Results:The results show that the established one-step multiplex nested real-time RT-PCR assay can specifically detect 2019-nCoV and influenza A and B viruses, with the limit-of-detection of about 125 copies/ml for 2019-nCoV and about 250 copies/ml for influenza A and B viruses. Totally 101 positive samples of various respiratory pathogens were detected, showing that the detection sensitivities of 2019-nCoV and influenza A and B viruses were 96.67%, 92.86% and 96.15%, respectively, with the specificity of 100%. No false-positive detection was found in the applied detection of more than 300 clinical samples.Conclusions:A one-step multiplex nested real-time RT-PCR assay for 2019-nCoV, influenza A and B viruses and human-derived gene internal-control was developed. The assay has good sensitivity and specificity and can be used for rapid screening of 2019-nCoV and influenza A and B viruses in high-volume samples.

OBJECTIVETo investigate the distribution of single nucleotide polymorphisms (SNPs) in CAPN10 gene in Chinese population and their relation with type 2 diabetes mellitus in Han people of Northern China.

METHODSCAPN10 gene was sequenced to detect SNPs in different nationalities of China. Five SNPs were chosen to perform case-control study and haplotype analysis in 156 normal Han people of Northern China and 173 type 2 diabetes. One SNP was also analyzed with transmission-disequilibrium test (TDT) and sib transmission-disequilibrium test (STDT) in 68 type 2 diabetes pedigrees (377 people).

RESULTSA total of 40 SNPs were identified in length of 8,936 bp, with an average of 1 in every 223 bp. The SNPs in CAPN10 gene did not distribute evenly and the SNPs in Chinese were different from those reported in Mexican American. There was no significantly statistical difference in the allele frequency of the 5 SNPs between case and control, and the haplotype frequencies in the two groups were not significantly different. No positive results was found in TDT and STDT analysis.

CONCLUSIONSThe SNP distribution of CAPN10 gene differs in different nationalities. The studied SNPs in CAPN10 gene may not be the major susceptibility ones of type 2 diabetes mellitus in Han people of Northern China.

Calpain ; genetics ; Case-Control Studies ; China ; Diabetes Mellitus, Type 2 ; ethnology ; genetics ; Ethnic Groups ; Genetic Predisposition to Disease ; Humans ; Polymerase Chain Reaction ; Polymorphism, Single Nucleotide

OBJECTIVETo investigate the distribution of the single nucleotide polymorphisms (SNPs) in CAPN10 gene in Chinese population and their relation with type 2 diabetes mellitus in Han people of Northern China.

METHODSCAPN10 gene was sequenced to detect SNPs in 27 samples of different nationalities in China. 5 SNPs were genotyped with single-base extension (SBE) method to perform case-control study in 156 normal Han people of Northern China and 173 type 2 diabetes and the 3 positive loci reported in the article were performed haplotype analysis. One positive locus was also analyzed with transmission-disequilibrium test (TDT) and sib transmission-disequilibrium test (STDT) in 68 type 2 diabetes pedigrees (377 cases).

RESULTSA total of 40 SNPs were identified in length of 8,936 bp, with an average of 1 in every 223 bp; The SNPs in CAPN10 gene did not distribute evenly and the SNPs in Chinese was different from that reported in American Mexicans. There was no significantly statistical difference in the allele frequency of the 5 SNPs between case and control (P > 0.05), and the haplotype frequencies in the two groups were not much different (P > 0.05). There was no positive results in TDT and STDT analysis (P > 0.05).

CONCLUSIONSThe SNP distribution of CAPN10 gene varies with different nationalities. The studied SNPs in CAPN10 gene may not be the major susceptibility ones of type 2 diabetes mellitus in Han people of Northern China.

Alleles ; Asian Continental Ancestry Group ; Case-Control Studies ; Diabetes Mellitus, Type 2 ; genetics ; Ethnic Groups ; Genetic Predisposition to Disease ; Genetic Testing ; Genotype ; Humans ; Polymorphism, Single Nucleotide