Objective: To investigate the enhancive effect of TNF-α on transfection efficiency of adenovi-rus in mononuclear cells of mouse and the enhancive capability of protection of bone marrow by MDR1. Meth-ods: Before the mononuclear cells of mouse were infected by recombinant adenovirus encoding human MDR1 gene, they had been pretreated by TNF-α. Transfection efficiency of adenovirus was monitored by fluo-rescence microscopy, immunohistochemistry and flow cytometry (FCM). mRNA and protein levels of MDR1 in the mononuclear cells of mouse were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot before and after treatment of TNF-α. Results: After treatment of TNF-α, tansfection rates of adenovirus were obviously increased in the treated group (26.26%) compared with the untreated group (11.96%). mRNA levels and protein levels of MDR1 were obviously increased in the treated group compared with the untreated group. Conclusion: TNF-α could enhance transfection efficiency of adenovirus in mononu-clear cells of mouse and enhance capability of protection of bone marrow by MDR1.

Objective To discuss the effect of cheiloplasty we designed an improved Black procedure that with microsurgical technique the tissue from lateral lips on the bilateral cleft lip were used to reconstruct the skin of anterior lip and the vermilion tubercle. Methods 36 cases of congenital bilateral complete cleft lip deformity were repaired through improved Black procedure and microsurgical method, including 19 patients with very short prolabium tissue, repairing insufficient skin and vermilion tubercle tissue by fissure lateral lip tissue. Results Following-up for 3 months to 3 years after treatment showed that 36 patients were with normal and symmetrical high of anterior lips, the chubby vermilion tubercles, the natural morphous of labial archs, the appropriate strength of labrums and the vermilion tubercles and lips without color difference, and the effects were satisfactory. Conclusion The improved Black procedure redeems the shortages of traditional Black procedure for the case with bilateralcomplete cleft lip and smaller anterior lip, such as the deficient height of anterior lips, eclabium and inadequate vermilion tubercles. By applying microsurgical technique, the procedure gives better upper lip function and aesthetic effect, and therefore it is worthy to be recommended in clinic.

Objective:To evaluate the effect and safety of rifabutin combined with multi-drugs in the treatment of multi-drug resist-ant tuberculosis with long-term therapy. Methods:Totally 86 cases of patients with multi-drug resistant tuberculosis were divided into the control group and the treatment group with 43 ones in each according to a random number table method. The two groups were trea-ted with levofloxacin, pasiniazid, ethambutol, protionamide and amikacin etc. The control group was treated with rifapentine, and the treatment group was treated with rifabutin additionally. After 18-month treatment, the negative conversion ratio of sputum smear and sputum mycobacterium tuberculosis culture, lesion absorption rate and cavity closure rate of X-ray chest radiograph and adverse reac-tions in the two groups were compared. Results:The negative conversion ratio of sputum smear and sputum mycobacterium tuberculosis culture in the treatment group was 41. 86% and 32. 56%, respectively, which were similar with those in the control group ( P >0. 05). There were no significant differences in lesion absorption rate and cavity closure rate of X-ray chest radiograph and adverse re-actions between the two groups (P>0. 05). Conclusion:Rifapentine or rifabutin combined with multi-drugs in the treatment of multi-drug resistant tuberculosis can improve the negative conversion rate of sputum mycobacterium and lesion absorption and cavity closure with high safety.

Objective To observe the immunologic effect of lactoferrin on repeated respiratory infection(IRRI) in children.Methods Ninety-eight cases of IRRI were divided into two groups randomly.The control group (48 cases)were treated with routine therapy.The treatment group(50 cases) were treated with lactoferrin based on routine therapy for 2-3 months.T cell subgroup,immunoglobulin and complements were determined before and after treatment.Results Total effective rates in treatment group and control group were 86% and 22.9% respectively.The therapeutic efficacy in treatment group was significantly higher than that in control group(P

BACKGROUND: Compared to those original viruses systems, adeasy adenovirus, a recombinant adenoviral system widely used in recent years, based on viruses with a deletion of both El and E3, reported by T.C. He in 1998, is an improved one. It simplifies the generation and production of such viruses and expedite the process of generating and testing recombinant adenoviruses using homologous recombination in bacteria rather than in eukaryotic cells. Moreover, it can be conveniently followed with the aid of green fluorescent protein encoded by EGFP gene incorporated into the viral backbone.OBJECTIVE: To construct the recombinant adenovirus and to evaluate them by transfect them to mesenchymal stem cells (MSCs)and detect the expression of target gene hlGF-I at gene and protein levels.DESIGN: Repetitive measurement wail.SETTING: The Institute of Pediatric Research, Chongqing University of Medical Science.METHODS: The study was performed at the Institute of Pediatric Research, Chongqing University of Medical Science from November 2004 to March 2005. After the amplification of truncated hlGF-1 gene from pcDNA3.l-hlGF-I by polymerase chain reaction (PCR), the gene fragment was inserted into the shuttle plasmid pAdtrack-CMV for homologous recombination with backbone plasmid pAdeasy-I in bacteria BJ5183 to get adenovirus.Ad-hlGF-1. The high titer adenovirus supernatant was obtained by repeated transducing of HEK 293 cells by adenovirus harvested after confirmation of the adenovirus structure. As target cells,MSCs were infected with adenovirus earned target gene, hIGF-1, to determine the expression of hlGF-1 gene.MAIN OUTCOME MEASURES: ① The construction of recombinant adenovirus vector;② the expression of target gene hIGF-1 in HEK 293 cells and the proper multiplicity of infection (MOI); ③ hIGF-1 gene expression in MSCs.RESULTS: The adenovirus vector based on adeasy system was constructed successfully and the Ad-hlGF transducing was successfully or efficiently expressed in MSCs cells. The ideal expression of harvested recombinant adenovirus in MSCs was detected by fluorescence microscope, RT-PCR, immunocytochemistry, and Western Blot.CONCLUSION: Adenovirus vector is an effective vector tools for gene expression and wansfection of MSCs. MSCs transduced with Ad-hIGF-1 maybe another option to gene-modified seed cells for articular cartilage tissue engineering.

Objective To establish written and electronic archives of Schistosoma japonicum antibody indirect hemagglutina-tion(IHA)tests. Methods In the process of schistosomiasis screening by IHA,the written records,electronic records,and se-rum sample bank were combined to make comprehensive archives. Results The S. japonicum antibody IHA test archives can pre-serve the schistosomiasis screening data in the long term and even can trace the source of experiments,and the operation was sim-ple. Conclusion The archives of S. japonicum antibody IHA tests are simple and useful,and worth of popularization.

Objective To investigate the value of ADC histogram analysis in the assessment of response to neoadjuvant chemotherapy (NACT) in patients with in locally advanced breast cancer (LABC). Methods Thirty?five female patients with invasive ductal carcinoma proved by pathology before NACT and treated with operation after NACT were retrospectively analyzed. All patients were received MR examination (including non?enhanced MRI, enhanced?MRI, and DWI) breast before NACT. After neoadjuvant chemotherapy, 19 of 35 patients were categorized as responders and 16 were categorized as non?responders according response evaluation criteria in solid tumors criteria. Per?patient weighted ADC histograms were generated. Mean ADC, mode ADC, maximum ADC, minimum ADC, median ADC, skewness, and kurtosis were analyzed by using t test between responders and non responders groups. ROC curves were constructed to determine the optimum threshold for each histogram parameter to differentiate non?responders and responders in breast cancers. The optimal threshold values, determined by maximal Youden index were selected when significant differences existed in two groups. Results Mean, minimum, skewness, and kurtosis of ADC between responders and non?responders group were(0.955 ± 0.135)× 10?3mm2/s,(0.535 ± 0.115)×10?3mm2/s,0.85±0.61, 2.93±0.17,and(1.103±0.233)×10?3 mm2/s,(0.650±0.104)×10?3mm2/s,-0.42± 0.17, 3.11 ± 0.25,respectively. Significant differences were found mean ADC, minimum ADC, skewness, and kurtosis (t=2.345, 3.096, 8.051 and 2.524,P<0.05), and there was no differences in mode, median, maximum between responders and non?responders(P>0.05).We set the optimal threshold criteria of mean ADC (0.956×10?3mm2/s), minimum ADC (0.580×10?3mm2/s), skewness (0.890), sensitivity, specificity of three parameters for predicting responders in LABC were 73.7%,62.5%, 78.9%,68.8%, and 63.2%,75.0%, respectively, and the areas under ROC curve of mean ADC, minimum ADC, skewness was 0.678, 0.770, and 0.890, respectively. Kurtosis of responders and non?responders did not get cutoff value for much more overlap. Conclusion ADC histogram analysis is valuable in predicting LABC in patients with NACT effect, the minimum and skewness of ADC is highest sensitivity, specificity, respectively.

Objective To investigate the value of diffusion weighted imaging (DWI)in identification of different molecular sub-types for breast cancer classifications.Methods All patients with breast cancer were divided into four subtypes groups by immuno-histochemistry results including Luminal A subtype,Luminal B subtype,HER2-over expressing (HER2-OE)subtype,and triple negative breast cancer (TNBC),respectively.The means of maximum,average,and minimum ADC of the lesions in all patients were recorded.The analysis of ANOVA and least significant difference test (LSD-t )were used for the statistical evaluation.Results There were significant differences in maximum ADC,average ADC,and minimum ADC among Luminal A subtype (n=21),Lu-minal B subtype (n=22),HER2-OE subtype (n=1 7)and TNBC subtype (n=12)groups (P =0.025,0.039 and 0.041,respec-tively).However,paired comparison in mean of maximum ADC,average ADC and minimum ADC by LSD-t multiple comparisons among Luminal A,Luminal B,HER2-OE and TNBC respectively were not significantly different.Conclusion DWI may be difficult to discriminate the molecular subtypes of breast cancer classification before surgery or biopsy.

BACKGROUND: Ramulus Uncariae et Uncus can be used to treat many diseases of cardiovesculer and neurosystem by calming and protecting endothelium and neuron.OBJECTIVE: To study the effects of drinking water extracts of Ramulus Uncariae et Uncus on body mass, food intake, energy intakes, serum glucose, insulin, total antioxidative ability of high-fat-fed rats.DESIGN: A completely randomized and controlled experiment.SETTING: Institute of Physiology, Foundational Medical College of Lanzhou University.MATERIALS: The experiment which is Gansu Province Key Labor of Pre-clinical Research for Chinese Herbs & New Drugs was carried out at the Physiological Laboratory of Institute of Foundational Medical College of Lanzhou University from March 2003 to May 2003. Twenty-seven healthy male SD rats were randomly divided into the following three groups (9 rats each group): namely, the normal control group, the high-fat-fed group and the Ramulus Uncariae et Uncus group.METHODS: [1] The rats of control group were fed with referenced diets(Protein, fat and carbohydrate was made up fore18.2%, 4.5%, 55.2% respectively), while the rats of high-fat-fed and the Ramulus Uncariae et Uncus group were fed with high-fat diets in which protein, fat and carbohydrate accounted for 23.7%, 21.6%, 39.0% respectively. [2]The rats in control and high-fat group could drink water freely every day while the rats in Ramulus Uncariae et Uncus group drank freely one percent water extract of Ramulus Uncariae et Uncus at the first day of the experiment, later the concentration of Ramulus Uncariae et Uncus increased gradually to six percent at the sixth day, which lasted until the end of the experiment. [3]Food intake was monitored daily, and body mass weekly at set time, the energy intake was calculated on basis of food intake. We calculated the Lee's Index [(body mass)1/3 (g) × 103 / body length (cm)]. [4] At the end of the seventh week, all rats were fasted for twelve hours to collect blood for the measure of some serum items. The serum levels of glucose were determined with hexokinase. The levels of insulin was measured by Radioimmunology methods. Malondiadehyde was measured by thiobarbituricbased colorimetric assay. Total antioxidative ability and free fatty acid were evaluated by colorimetric assay. [5] The difference of quantity data among the tree groups were statistically analyzed by F analysis, while the difference between two groups was analyzed by LSD methods. The main indexes of the experiment were body mass, food intake, energy intake, serum glucose after fasting, insulin, free fatty acid, malondialdehyde and total antioxidative ability respectively.RESULTS: Twenty-seven rats date was analyzed and nine rats in every group. [1] Body mass: Compared with the high-fat-fed group, body mass in rats of the control group and the Ramulus Uncariae et Uncus group were less from the end of the third week to the end of the experiment (P ＜ 0.05-0.01).As compared between the Ramulus Uncariae et Uncus group and the control group, there was no significant difference from the first week to the sixth week (P ＞ 0.05), while the body mass of the former group was bigger than that of the latter at the end of the seventh week (P ＜ 0.01). [2] Lee's Index of the rats in high-fat-fed group was significantly higher than those of the rats in the control and Ramulus Uncariae et Uncus group (P ＜ 0.01).[3] Food intake: From the first week, compared with the control group, the food intake of rats in Ramulus Uncariae et Uncus group was less (P ＜ 0.01)and lower than that in high-fat-fed group at the end of the third, fifth, sixth and seventh week, too (P ＜ 0.05-0.01). [4] Energy intake: As the food was high-fat, the Energy intake of rats in the Ramulus Uncariae et Uncus group was higher than that of the control group at the end of the first, second and forth week (P ＜ 0.05-0.01), while less than that of the high-fat-fed group at the end of the third, fifth, sixth and seventh week (P ＜ 0.01). [5] The serum glucose: There was no statistical significance among the three groups. [6]The level of serum insulin and malondiadehyde of the rats in high-fat-fed group were higher than that of the control group and the Ramulus Uncariae et Uncus (P ＜ 0.01). [7] The level of free fatly acid of rats in high-fat-fed group was higher than that of the control group (P ＜ 0.05), while there wasno statistical difference compared with the Ramulus Uncariae et Uncus group. [8] The level of total antioxidative of the rats in high-fat group was lower than that of the Ramulus Uncariae et Uncus group (P ＜ 0.01).CONCLUSION: [1] Drinking water extracts of Ramulus Uncariae et Uncus could inhibit the weight gain and food intake, [2] reduce level of free radical and insulin of serum, which could be caused by the dec lining of free fatty acid. [3] In the same time, increase the total antioxidative ability of the obese rats caused by high-fat diets.

Adolescent ; Amblyopia ; genetics ; Child, Preschool ; Female ; Finger Joint ; pathology ; Hearing Loss, Conductive ; congenital ; genetics ; Humans ; Male ; Pedigree ; Young Adult