Objective To study the changes of intestinal transit rate, quantity of enterochromaffin cells and expressions of 5-hydroxytryptamine receptor 3 (5-HT3R) in SD rats at different ages, and to investigate the possible mechanism of gastrointestinal dysfunction in aged rats. Methods Eighty healthy SD rats were divided into five groups: three months age, nine months age, eighteen months age, twenty-four months age and thirty months age,and there were sixteen rats in each group. The intestinal transit rate was detected. Immunohistochemistry staining was used to test the quality of chromaffin cells in mucosa and submucosa of jejunum, ileum and colon and to detect the expressions of 5-HT3R in intestinal myenteric plexus. Results The intestinal transit rate was significantly lower in thirty months age group than in three months age group [(52.1±9.8)% vs. (67.2±13.5)%, t=7.013, P=0.001]. In thirty months age group, the quality of chromaffin cells in mucosa and submueosa of jejunum, ileum and colon were 11.1±3.0, 10.6±1.9, 10.2±4.3, respectively, which were reduced compared with three months age group (22.9±6.2, 25.8±7.1, 23.0±5.7, t=3. 640,3. 384,4. 154, all P<0.01). The expressions of 5-HT3R in myenteric plexus of jejunum and ileum were reduced in thirty months age group than in nine months age group [4.8±1.4, 9.3±4.2 vs. 8.9±1.5, 14.5±5.3;t=3.464, 3.003,all P<0.01]. The expression of 5-HT3R in colon myenteric plexus were 5.0±1.3 and 9.0±1.7 in thirty months age group and three months age group, respectively (t=4.549,P<0.001). Conclusions In aged rats, the intestinal transit rate, quantity of enterochromaffin cells and expressions of 5-HT3R are decreased with ageing, and the gastrointestinal dysfunction may be associated with the changing of the quantity of enterochromaffin cells and expressions of 5-HT3R in myenteric plexus.

ObjectiveThe purpose of the present study was to discuss the method to avoid spillage by means of adding chemotherapeutic drugs into sealed transfusion bottles.Methods90 penicillin sealed bottles of the same batch number were randomly divided into the test group and the control group,each with 45 bottles.Standard method according to Basic Nursing was used to add chemotherapeutic drugs into transfusion bottles in the control group.Drugs were added into transfusion bottles under negative pressure in the test group.The operating time was measured,the spillage volume of puncture site was calculated and microbial detection of syringe was observed in the two groups.ResultsThere was a significant difference in the spillage volume of puncture site between the two groups (P<0.01),but no difference was seen in the operating time and microbial detection of syringe (P>0.05),ConclusionsThe spillage volume of puncture site was reduced significantly by means of adding chemotherapeutic drugs into transfusion bottles under negative pressure.This can decrease chemotherapeutic professional exposing risks and drug wastage.

Objective To restore the incisal angle defect of anterior upper teeth with partial cov-erage porcelain veneer, and evaluate the clinical performance of the restoration. Methods A total of 12 patients were included, and 14 anterior upper teeth with small incisal angle defect were involved in this study, after tooth reduction of 2 mm wider than the defect of every teeth, 14 partial coverage IPS-Empress Ⅱ veneers were made and binded with Variolink Ⅱ adhesive system. During the observation period of 36-48 months after insertion, prosthodontic results were evaluated, using the CDA quality e-valuation system, and marginal integrity, anatomic form, surface and color of the veneers, and sec-ondary caries were examined. Results During the period of 36-48 observation, all of the 14 restora-tions were rated satisfactory. Conclusions With strict control of indications, the partial coverage porcelain veneer could function satisfactorily as an alternative restoration for small incisal defect of an-terior upper teeth.

Objective To explore the etiology,clinical manifestations of infantal viral pneumonia in Luzhou area.Methods Five viral specific serum IgM antibodies were detected by enzyme-linked immunosorbent assay(ELISA) in acute period of viral pneumonia.Five kinds of virus were separated,as respiratory syncytial virue(RSV),influenza virus(IFV),adenovirus(ADV),cytonegalo virus(CMV),and parainfluenza virus(PIV).Serum specific IgM was positive,C-reactive protein(CRP) was less than 8 mg/L,and there was no(clini-)cal and laboratory proof of other pathogenic infection detected in 221 infants with pneumonia.Results 1.One hundred and four cases of viral infection were detected from 221 infants with pneumonia.The viral positive detected rate was 47.1%,and there were 75 cases of single viral infection(72.1%) and 29 cases of mixed viral infection(27.9%) among them.2.In the single viral infection,RSV was the first,IFV,ADV,PIV and CMV being the second,the third,the fourth,and the fifth respectively.3.The types of likely infection virus were different in different age-stage and seasons in infants.Conclusions The etiology of infantal pneumonia is complicated.The types of viral infection are various besides germ infection and the epidemic season peak;clinical manifestations are different.Earlier detection of(etiology) in infection will make clear the etiology and then take appropriate treatment measures to improve curative effect.

Objective To construct microvessel angiogenesis model in nonobese diabetic/severe combined immunodeficient disease(NOD/SCID) leukemia mice.Methods Divided NOD/SCID mice into group A:blank group;group B:endothelial cell(EC) injection group;group C:leukemia model mice with EC injection group.Microvessel density(MVD) in bone marrow was calculated with cnemis slice after immunohistochemistry dyeing.Evaluated leukemia burden in leukemia model mice.Results Bone marrow MVD in group C was significantly more than group B.Microvessels in leukemia mice had disordered branches and irregular cavity.The morphism of vessels was immature.Conclusions Microvessel angiogenesis model in NOD/SCID leukemia mice has been constructed successfully.It can be used in the study of anti-angiogenesis in leukemia and relative researches.

This study aims to investigate the relationship between odor and contents of the chemical compounds in Lonicera japonica, including chlorogenic acid, galuteolin and polyphenols. High performance liquid chromatography (HPLC) was applied to determine the contents of chlorogenic acid and galuteolin in L. japonica. The ponptent of polyphenols was determined by UV-Vis Spectrophotometry. Electronic nose was used to extract and measure the odor of L. japonica. Then SPSS 17.0 software was employed for data processing. There is a significant positive correlation between the comprehensive index value of aroma and the contents of chlorogenic acid and polyphenols. The regression equations have been established. However, the relationship between the comprehensive index value and the content of galuteolin is not obvious. This is proof that the odor of L. japonica has close connection with the chemical compounds. Therefore, this research offered a new method for initially determine or predict the content of the chemical composition in L. japonica,
Chlorogenic Acid ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Electronic Nose ; Lonicera ; chemistry ; Odorants ; analysis ; Polyphenols ; chemistry ; Smell

OBJECTIVETo analyze the differences between the oral microbiota of monozygotic and dizygotic twins by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE).

METHODSA total of 20 pairs of twin children were included in this study, in which 10 pairs were monozygotic (MZ) twins, and 10 pairs were dizygotic (DZ) twins. Of the 20 pairs, 10 pairs of twins had primary dentition, and 10 pairs had mixed dentition; 17 children had caries, and 23 children had no caries. Genomic DNA was extracted from saliva samples. The 16s rRNA was amplified and analyzed by PCR-DGGE. The PCR-DGGE band number and Shannon index were calculated.

RESULTSCluster analysis showed high similarity in the oral bacterial community seen in co-twins. However, no significant difference was seen between MZ and DZ twins. In the primary dentition, the PCR-DGGE band number and Shannon index of children with caries (11.00 +/- 1.56, 1.05 +/- 0.36) were lower than those of children without caries (14.00 +/- 2.74, 1.44 +/- 0.37) (P < 0.05). In mixed dentition, the PCR-DGGE band number and Shannon index of children with caries (11.88 +/- 4.05, 1.18 +/- 0.36) were lower than those of children without caries (14.31 +/- 5.71, 1.28 +/- 0.47), but the differences were not statistically significant (P > 0.05).

CONCLUSIONEnvironmental factors may have a stronger effect on the constitution of oral microbiota in children compared with genetic factors. Children without caries may have a richer microbial diversity compared with children with caries.

Bacteria ; Child ; Denaturing Gradient Gel Electrophoresis ; Dental Caries ; Female ; Humans ; Male ; Microbiota ; Mouth ; microbiology ; Polymerase Chain Reaction ; RNA, Ribosomal, 16S ; Saliva ; Twins, Monozygotic

Objective To evaluate the clinical value of contrast-enhanced ultrasound (CEUS) in preoperative diagnosis of anal fistula. Methods Forty-five patients with fistula in ano were evaluated by physical examination, then CEUS were peformed by injecting SonoVue through the external opening to enhance the detection of the fistulous track and the internal opening. The results of CEUS were matched with surgical features to establish their accuracy in preoperative assessment of anal fistula. Results Simple typing fistula was found in 19 of 45 patients and 26 patients had complex fistulas. The accurate diagnostic rates by conventional ultrasound of simple typing fistula and complex fistulas were 89. 5% and 61.5%,respectively,the accurate diagnostic rates by CEUS of simple typing fistula and complex fistulas were 94. 7% and 92.3%, respectively, there was no significant difference between conventional ultrasound and CEUS about simple typing fistula( P ＞0.05), and there was significant difference about complex fistulas ( P ＜0. 05). Conclusions CEUS has a good visibility and accurate rate for diagnosis of anal fistula,It plays an important role for operation.

Objective To investigate the effect of comprehensive nursing intervention and evaluate its role in the entire clinical course of in the treatment of children with severe burns. Methods A total of 60 children with 1-5 years old with clinical diagnosis of severe burns were randomly divided into experimental group and control group by random digits table method, 30 cases in each group. The control group received routine burn care. The experimental group received comprehensive nursing interventions on the basis of routine burn care and the intervention time covered the entire course of treatment. During hospitalization, the recovery and family social system were evaluated by anxiety scales and social support scales combined with the cure rate and hospitalization of children. Results Before intervention, the score of Anxiety Rating Scale was high in both groups of families, while Social Support Scale was lower, the difference was not statistically significant between the two groups (P>0.05). After intervention, the score of Anxiety Rating Scale and was Social Support Scale were (52.31±7.81), (31.52± 5.48)points in the experimental group, and (62.51 ± 6.52), (23.62 ± 5.62) points in the control group, and there were significant differences (t=5.491 3, 5.512 5, P<0.01). The length of stay was (18.34±3.58) d in the experimental group, and (21.82 ± 4.23) d in the control group, and there was significant difference(t=3.439 6, P<0.05). The cure rate was 93.33%(28/30) in the experimental group, and 56.67%(17/30) in the control group, and there was significant difference(χ2=10.755 6, P<0.05). Conclusions The comprehensive nursing intervention can provide comprehensive refinement of the overall care in children and their families, promote physical and psychological rehabilitation of children with severe burns, and repair their family and social support systems. The comprehensive nursing intervention has far-reaching implications for the rehabilitation of children with severe burns.

ObjectiveTo investigate the effects of Taijiquan training on bone density and balance function of post-menopause women. Methods59 volunteers of post-menopausal women were divided into Taijiquan group and control group. Bone density was examined with DPX-L. The balance function were recorded with win-pop balance monitor and star diagram. ResultsBone density in lumbar vertebra, left collum femoris and left Ward's septa were higher in the Taijiquan group than in the control group. The lengths of center excursive loci reduced in Taijiquan group. The distances that the foot could touch were longer at Posterolateral, posteromedial, posterior, lateral(back) directions in the Taijiquan group than in the control group. ConclusionTaijiquan training can improve the bone density and balance function in post-menopause women.