Objective To explore the production of medical polypropylene anti-bacterial mesh coated with triclosan,and study the properties of its controlled-release drugs,as well as the efficiency of the mesh coated with triclosan.Methods A medical polypropylene anti-bacterial mesh coated with triclosan was produced by the method of solvent evaporation,with triclosan as antibacterial agent and ethylene-vinyl alcohol copolymer as carrier.The meshes were divided into four groups: A,B,C and D.The meshes in A,B and C(experimental) groups were coated with triclosan,and D group was control group.The ultrastructure of meshes of the 4 groups was observed under electron microscope.The slip diffusion method was used to observe the diameter of bacteriostasis-rings in different time periods.At the same time,we observed the maximum tensile strength of the mesh in transverse and longitudinal axis when they were pulled off before and after the experiment.Results The surfaces of B group were uniform and smooth,and the coating could continuously release drugs during 7 days in sodium chloride.The diameter of bacteriostasis-rings in B group was significantly larger than that in control group(P

The clinical and pathological data of eight cases of nasal solitary keratoacanthoma were analyzed and relevant literatures were reviewed. All of the cases were verified via pathological examination after local lesion excision, along with reconstruction of tissue defects in external nose. The patients were all primary healed. With a follow up from 8 months up to 7 years, only one case relapsed one year after first surgery, and given another operation, no recurrence happened thereafter. The other seven cases did not recur so far. The nasal solitary keratoacanthoma is a squamous tumor with potential malignancy, which manifests similarly with squamous cell carcinoma, and the correct diagnosis requires comprehensive judgment from both the clinical and histopathological characteristics. The disease shows favorable prognosis and low recurrence rate.
Adult ; Aged ; Female ; Humans ; Keratoacanthoma ; Male ; Middle Aged ; Nose Neoplasms

Objective To construct human apolipoprotein O (apolipoprotein O, ApoO) expression vector and obtain recombinant fusion protein thioredoxin (Trx)-ApoO by pET prokaryotic expression system. Methods The ApoO gene fragment from the human liver cDNA library was amplified by PCR. The resulting product was cloned into pET-32a(+) vector and sequenced. The confirmed cDNA was cloned into plasmid E.coli DH10B and then transformed into E.coli BL 21 (DE3) where it was induced to express protein by isopropyl β-D-1-thiogalactopyranoside (IPTG).The fusion protein was purified by Ni-NTA resin. Results The ApoO gene was cloned by PCR and a 519 bp DNA fragment was shown on the agarose electrophoresis. The cloned gene was sequenced and demonstrated to have the same sequence as that of human ApoO gene in GenBank which justified a successful construction of recombinant plasmid. ApoO cDNA gene fragment was induced by IPTG, and a 34 kD recombinant fusion protein Trx-ApoO was tested on sodium dodecyl sulfate polyacrylamide (SDS-PAGE). Conclusion Human ApoO gene is successfully cloned and its recombinant fusion protein Trx-ApoO is expressed.

AIM:To investigate the differences among Lenstar 900, A-scan ultrasound and keratometer in measurement of axial length ( AL ) , anterior chamber depth ( ACD ) and corneal curvature ( K1 , K2 , Km ) , and evaluate the consistency of the instruments, with the purpose providing references for the clinical application of Lenstar 900.
METHODS: In this study we picked up 36 patients ( 50 eyes ) underwent cataract surgery, and lens nucleus hardness were under level IV. Before the operation, AL, ACD and K1 , K2 , Km were measured by Lenstar 900, A-scan ultrasound and keratometer respectively. The differences between the results were compared by the paired t-test. The correlation of the results was analyzed by Pearson correlation analysis, and the consistency was measured by Bland-Ahamn method.
RESULTS: The mean AL and ACD values measured by Lenstar 900 and A-scan ultrasound had no significantly statistic differences (P>0. 05). The K1, K2, Km measured by Lenstar 900 and keratometer were not significantly statistical different (P>0. 05). The results measured by these three instruments had close linearity correlation ( r>0.9, P<0. 01). The consistency of the results was well in Bland-Ahamn analysis.
CONCLUSION:The preoperatively biometric result of Lenstar 900, A - scan ultrasound and keratometer in patients with cataract are all reliable, and they can be substituted by each other. However, Lenstar 900 can not only measure AL, ACD and corneal curvature at the same time, but also cornal thickness, lens thickness, white to white, pupil size, optical axis eccentricity, retinal thickness and so on. It has a number of advantages such as non-touching, convenient and efficient, and can be recommended to use widely.

Human bocavirus (HBoV) 1-4 have been detected both in respiratory and stool samples since the first HBoV was discovered in 2005. HBoV-1 is mostly associated with respiratory infection, while HBoV 2-4 are usually associated with intestinal tract infection. A variety of signs and symptoms have been described in patients with HBoV infection, including cough, wheezing, pneumonia, and diarrhea, but the research on pathogenic mechanism of HBoV is limited because HBoV cannot be cultured in vitro due to the lack of appropriate host cells. Three-dimensional epithelial cell culture, reverse genetics, and viral metagenomics are identified as novel tools that may promote the research on pathogenic mechanism of HBoV and the discovery of new viruses. This review summaries currently available diagnostic approaches such as electron microscopy, cell culture, PCR, and immunoassay in order to provide a method reference for indepth research on HBoV.
Animals ; Human bocavirus ; genetics ; growth & development ; isolation & purification ; pathogenicity ; Humans ; Parvoviridae Infections ; diagnosis ; virology ; Viral Proteins ; genetics ; metabolism ; Virology ; methods ; Virulence ; Virus Cultivation

An anaerobic sequencing batch reactor (ASBR) was used to treat thermal denitration tail liquid and microbial community was studied. Activated sludge was taken from the reactor for scanning electron microscope analysis. The images showed that the dominant cells in the flora were oval cocci. Its diameter was about 0.7 μm. Through a series of molecular biology methods such as extracting total DNA from the sludge, PCR amplification, positive clone authentication and sequencing, we obtained the 16S rDNA sequences of the flora. Phylogenetic tree and clone library were established. The universal bacteria primers of 27F-1492R PCR amplification system obtained 85 clones and could be divided into 21 OTUS. The proportions were as follows: Proteobacteria 61.18%; Acidobacteria 17.65%; Chlorobi 8.24%; Chlorofexi 5.88%; Gemmatimonadetes 3.53%; Nitrospirae 2.35% and Planctomycetes 1.18%. The specific anammox bacterial primers of pla46rc-630r and AMX368-AMX820 PCR amplification system obtained 45 clones. They were divided into 3 OTUS. Candidatus brocadia sp. occupied 95.6% and unknown strains occupied 4.4%.
Ammonia ; chemistry ; Bacteria ; Phylogeny ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S ; Sewage ; microbiology

Objective To discuss the relationship between c-reactive protein and prognosis of acute coronary syndrome.Methods C-reactive protein of 60 acute coronary syndrome aged patients was evaluated.The patients were divided into two groups:one group with higher CRP level and another group with normal CRP level.The following-up duration was 6 months.After correct therapy,the morbidity of re-angina,arrbythmia,heart failure,re-infarction and cardiac death was compared.Results The morbidity of re-angina,arrhythmia,heart failure,re-infarction,cardiac death was 46.3%(19/41),43.9%(18/41),9.8%(4/41),22.0%(9/41),7.3%(3/41)respectively in higher Clip levd group;The morbidity of re-angina,arrhythmia,heart failure,re-infarction was 15.8%(3/19),10.5%(2/19),5.3%(1/19),5.3%(1/19)respectively in normal CRP group and there was no cardiac death accident.There was significant difference between the two groups.Conclusion CRP plays an important role in the onset of acute coronary syndrome,and its level is related with the higher morbidity of re-angina,arrbythmia,heart failure,re-infarction and cardiac death.

OBJECTIVETo observe the clinical efficacy differences between regular acupuncture combined with acupuncture at trigone of urinary bladder and simple regular acupuncture for treatment of urination dysfunction induced by spinal cord injury.

METHODSSixty patients were randomized into an observation group and a control group, 30 cases in each one. The control group was treated with regular acupuncture at Sanyinjiao (SP 6), Zusanli (ST 36), Zhongwan (CV 12) and Tianshu (ST 25), etc. Based on the treatment of control group, the observation group was additionally treated with intensive needling at trigone of urinary bladder, once a day, 30 min per treatment. Ten treatments were considered as one course, and there was an interval of two days between courses, 4 courses of treatment were given in two groups. The improvement of urination function in two groups was evaluated, and the efficacy of urination function in two groups was compared.

RESULTSAfter treatment, the times of urine leakage, maximum urine output, bladder capacity and residual urine were all improved in two groups (all P<0.05). The improvement of times of urine leakage, bladder capacity and residual urine in the observation group was superior to that in the control group (all P<0.05). The total effective rate was 96.7% (29/30) in the observation group, which was superior to 83.3% (25/30) in the control group (P<0.05).

CONCLUSIONThe efficacy of regular acupuncture combined with intensive needling at trigone of urinary bladder on urination dysfunction induced by spinal cord injury is significantly superior to that of simple regular acupuncture.

Acupuncture Points ; Acupuncture Therapy ; Adolescent ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Spinal Cord Injuries ; complications ; Treatment Outcome ; Urination ; Urination Disorders ; etiology ; physiopathology ; therapy ; Young Adult

BACKGROUND:Previous studies have demonstrated that nano-hydroxyapatite/polyamide 66 (nHA/PA66) composites as a root canal filing material possess the basic physical and chemical properties, have antibacterial properties against the infection of medulary cavity, and have no cytotoxicity. However, it is rarely reported as a direct pulp capping agent.
OBJECTIVE: To observe the histological reaction of nHA/PA66 composites as the pulp capping agent.
METHODS:The first and second molars from 12 Wistar rats were selected to prepare class I cavities by exposing the dental pulp. Then, these rats were randomized into three groups and subjected to dental pulp capping using nHA/PA66 composite, nHA and calcium hydroxide, respectively, folowed by filing with glass ionomer cement. At 7 and 30 days after filing, histological changes of odontoblasts and microvessels in the dental pulp were observed using ink perfusion method.
RESULTS AND CONCLUSION: At 7 days after filing, significant changes in dental pulp fibroblast proliferation, predentin thickening, dilation of blood vessels were observed in the nHA/PA66 group; only dental pulp fibroblast proliferation with no predentin thickening and dilation of blood vessels was found in the nHA group; in the calcium hydroxide group, the pulp tissues in the pulp chamber were mostly damaged, and obvious hyperplasia in dental pulp fibroblasts and certain inflammatory cel infiltration with vascular necrosis were observed. At 30 days after filing, predentin thickness was increased further, dental pulp fibroblasts proliferated, the number of odontoblasts increased, and dilation of blood vessels was observed in the nHA/PA66 group; predentin thickening and dilation of blood vessels were obviously visible in the nHA group; pulp necrosis was found on the pulp surface below the pitting pore, odontoblasts grew actively at the pulp junction, with no obvious thickening of the predentin, and there were dense vessels below the necrotic area. These findings indicate that the nHA/PA66 composite can induce the regeneration of dental pulp cels.

BACKGROUND:The mechanical properties of SonicFil ultrasonic resin are better than those of the traditional light-cured composite resin, but its effect on odontoblasts and dental pulp vessels is unclear.
OBJECTIVE:To study the effect of SonicFil ultrasonic resin on odontoblasts and dental pulp vessels of rats using histological methods.
METHODS:Twenty-five Wistar rats are selected for experiment. Ninety-six teeth from the first and second molars were selected and randomly divided into SonicFil ultrasound resin group and Filtek Z350 nano resin group with 48 teeth in each group. Experimental teeth in each group were equaly subdivided into 7 days group and 30 days group. Besides, randomly selected five teeth with no intervention served as normal control group. After anesthesia and disinfection, class I cavities on the occlusal surface of the maxilary first and second molars were prepared and filed with SonicFil ultrasound resin and Filtek Z350 nano resin group, respectively. The rats were sacrificed by ink perfusion method, and tooth specimens were taken to observe the changes of odontoblasts and pulp microvessels.
RESULTS AND CONCLUSION: At 7 days after filing, two groups had similar changes in the pulp presenting with mild inflammation. Besides, there were scattered inflammatory cels distributing in the cave pulp tissue, and in most of the specimens, odontoblasts arranged disorderly with little vacuoles and microvascular dilatation in the pulp. At 30 days after filing, in the SonicFil ultrasonic resin group, odontoblasts arranged orderly, inflammatory reaction and microvascular dilatation disappeared basicaly. In contrast, in the Filtek Z350 nano resin group, disordered odontoblasts decreased, inflammatory reaction weakened, as wel as microvascular dilatation became less. These results show that under the experimental condition, both of the SonicFil ultrasonic resin and Filtek SonicFil Z350 nano resin play certain roles in the formation of odontoblasts and dental pulp vessels, but over time al of these effects can automaticaly disappear.