Background The pathogenesis of myopia is currently unclear. Studies showed that retinoic acid regulates the development of myopia. Whether IRBP, a retinoid transport proteins, participates in the development of myopia or not is unknown. Objective The aim of this study was to investigate the expression of interphotoreceptor retinoid-binding protein (IRBP) in the retina of guinea pig with lens-induced myopia and study the relationship between IRBP expression and experimental myopia. Methods Fifty guinea pigs were randomized into the normal controls(n=10) ,defocus Ⅰ group (n=20) and defocus Ⅱ group (n=20). Guinea pigs in the defocus Ⅰ groups wore -10. 00 D lenses on the right eyes for 14 days and the defocus Ⅱ group for 28 days. The left eyes of both defocus groups did not wear any lens served as self-control. The refraction diopter and axial length were measured before and after wearing lenses. The protein expression of IRBP in the retina was detected by immunohistochemisty and Western blot. RT-PCR was used to observe the level of IRBP mRNA in the retina. Result Compared with the control eyes,the right eyes in the defocus Ⅰ and Ⅱ groups developed to ( -5. 53±1.93) D and (-8.69±2.46) D, and the ocular axial length elongated to (0. 31±0. 15 ) mm and (0.41 ±0. 13 ) mm, showing statistically significant differences between them ( group Ⅰ: t= 12. 57,29.63 ,P＜0.05 ;group Ⅱ :t= 15.82,44.35 ,P＜0.05 ) ,and the degree of myopia was lower and axial length was shorter in group Ⅰ than the eyes of group Ⅱ ( P＜0.05 ). There was no statistically significant differences found between the left eyes of defocus group Ⅰ and defocus group Ⅱ or eyes of the control group in diopter and axial length (P＞0.05). Immunochemistry revealed that the mean gray value of IRBP protein expression was 165.62t4. 93 and 171.00±4. 25 in defocus Ⅰ group and defocus Ⅱ group and was significantly higher than that of the self-control eyes and the normal control group ( 156. 31±4.00,155.26 ±3.49 and 158.61 ±4. 58 ) ( P＜0.05 ). Western blot demonstrated that the expressios of IRBP protein were down-regulated and RT-PCR showed the IRBP mRNA level of IRBP was significantly lower in defocusIgroup and defocusⅡgroup,compared with the self-control eyes and the normal control group (P＜0. 05). Conclusion Expression of IRBP in guinea pig may play a role in lens-induced myopia.

According to the requirements of ptobiotics, we have separated 13 strains of Lactobacillus from the content in gut of lactating piglet. Among them 3strains are L. acidophilus, one is L. casei, one is L. atenaforme and 8 strains are L. fermentum. They can resist 1.0% bile salt and the acidity of pH3.0, can inhibit pathogenic Escherichia coli and Staphylococcus aureus. They are safe and non-toxic to mice.

Objective To explore the effect of early systemic phased exercise post mastectomy on the recovery of activities of daily living. Methods 100 patients who received modified radical mastectomy were assigned to the experimental group and control group with 50 patients in each group. They all accepted routine nursing, and the experimental group accepted early systemic phased exercise in addition. They were assessed with range of motion (ROM) of shoulder and modified Barthel Index (MBI). Results ROM of shoulder improved in 90% of the experimental group and 70% of the control group (P<0.05). MBI was (84.5±18.2) in the experimental group and (51.8±16.6) in control group (P<0.05) . Conclusion Early systemic phased exercises may promote the recovery of the affected arm for the patients post mastectomy.

Objective:To understand the responsiveness of community health service institutions in Henan Province. Methods:This research collected information through questionnaire investigations. The object of the investigations is key informants familiar with community health service institutions. Various dimensions of responsiveness within Henan province community health service institutions are determined through a multiple-input pecking order graph. The fuzzy comprehen-sive evaluation method is used to evaluate the level of responsiveness. Responsiveness inequality index is used to measure the distribution of reactions. Results:A total of 431 valid key informants were surveyed. The various dimensions of the questionnaire of Cronbach alpha coefficient was greater than 0. 623;the total scale of the Cronbach alpha coefficient was 0. 850;the correlation coefficient of each dimension of test-retest reliability were greater than 0. 907. The levels of responsive-ness and distribution index were 8. 33 and 0. 2744, respectively;each dimension by order of importance:timely attention>dignity>infrastructure>communication>confidentiality >social support >selective >autonomy. Approximately 50% of key informants considered that vulnerable groups in community health service institutions were sometimes or often treated unfairly. Conclusion:Key informants considered the responsiveness level of overall higher community health service institu-tions in Henan Province was high, and the distribution of responsiveness was relative equilibrium. However, there is a large shortage of infrastructure, privacy protection, doctor-patient communication, etc.

A questionnaire survey on chronic heart failure management was conducted in 110 physicians from Xindu,Supo,Jiajiang and Xinhua community hospital in Chengdu from January 2007 to June 2010.Results showed that 77.3％ (85/110) of community physicians lacked knowledge about prevention,diagnosis and treatment of chronic heart failure,and the diagnostic accuracy rate was only 51.3％ (40/78) in these community hospitals.There was lack of awareness of the guideline of chronic heart failure:the rate of β blockers use was 15.0％ (6/40) and only 5.0％ (2/40) used the target dose; the rate of angiotensin converting enzyme inhibitor use was 17.5％ (7/40) and only 7.50％ (3/40) used the target dose.In addition,90％ (99/110) of community doctors lacked the education and management for patients with heart failure.The survey suggests that the current situation of chronic heart failure management in community physicians in Chengdu is unsatisfactory.It is necessary to strengthen the training of community physicians.

OBJECTIVE: To analyze the amount and inflammatory components of the sputum in patients with "disharmony of stomach", including gastroesophageal reflux disease, peptic ulcer and chronic gastritis. METHODS: Sputum production was induced by inspiration of aerosol of 3.5% hypertonic saline with ultrasonic nebulizer, and the total cell count in the sputum was examined. Sputum smear stained with Gimsa was used in differential counting under light microscope. Bacterial culture in the sputum was performed in the usual way. Peak expiratory flow (PEF) was tested to study the airway responsiveness. RESULTS: The amount of sputum, the total cells and eosinophils in the sputum of the patients with "disharmony of stomach" were higher than those of the control. PEF decreased following sputum induction. These parameters returned to control level after treatment with Chinese herbs. Bacterial culture was negative. CONCLUSION: "Disharmony of stomach" can cause the bronchial inflammation (non-infection) characterized by eosinophil increase.

Objective To construct prokaryotic vector and express human herpes virus 8 (HHV8) small capsid protein open reading frame 65 (ORF65) in Escherichia coli.Methods DNA was extracted from BCB-1 cells (HHV8-positive but EBV-negative).HHV80RF65 coding sequence was amplified by PCR and inserted into the prokaryotic expression vector pThioHisA.Recombinant plasmid was transformed into E.coli BL21 to express fusion protein induced by IPTG.The expressed products were purified by affinity chromatography on Ni-NTA resin.The antigenieity and the specificity of the recombinant proteins was identified by Western blot with HHVS-positive serum samples.ELISA coating with the recombinant proteins was used to screen 568 serum samples,which were simultaneously detected by IFA kit(Biotrin) and ELISA kit(Qiagen).Results Gene sequencing showed that the target gene was identical with that of HHV8 standard species,the 31 500 fusion protein was found in SDS-PAGE.ELISA coating with the recombinant proteins had a good agreement with IFA kit(Biotrin) and ELISA kit(Qiagen).The detection for the clinical samples showed the ELISA kit was feasible,applicable and consistant.Conclusion The recombinant proteins showed good antigenicity,and it is valuable for further study on HHV8 specific antibody detection.

Objective To improve the diagnosis and management of parapharyngeal space(PPS)neoplasms. Methods Records of 85 patients with PPS neoplasms operated in 11 years were reviewed with regard to presenting signs and symptoms,histological characteristics,imaging technique,surgical approach and postoperative complica- tions.Results Benign rumors were found in 77 cases and malignant tumors were founded in 8 cases.Forty-one tu- mors originated from salivary glands;neurogenic tumors were found in 36 patients and 8 patients with tumors in oth- er organs.All were treated by surgical operation:the trans-eervical approach was used in 76 cases,tans-oral in 6 cases and the combined transoral-cervical approach in 3 cases.The complications after operation were facial nerve palsy(4 cases),hypoglossal nerve paralysis(2 cases)Horner syndrome(2 cases),vocal cord paralysis(2 cases),thyroid gland fistula(1 case),infects(1 case)and difficulty in breathing(1 case).Conclusion Tumors originated from salivary glands were the most common neoplasms in the primary parapharyngeal space neoplasms,and neurogenic tumors fol- lowed.High-resolution computed tomography or magnetic resonance imaging was essential for diagnosis and presurgi- cal planning.The transcervical approach was the preferred procedure for PPS tumors.

Objective To study the regulation role on molecular level of hCG on P450scc,P450c17 and 3?HSD in adult mouse Leydig cells. Methods Leydig cells of adult mice were cultured in vitro for 1 and 8 hours with or without hCG,then P450scc,P450c17 and I,VI total 3?HSD mRNA levels were measured respectively by the semi quantitative RT PCR as well as Scal restriction endonuclease incised methods.Meanwhile,the testosterone contents were measured in two groups. Results 1.In stimulated group Leydig cells cultured for 1 and 8 hours with hCG,the testosterone contents were higher significantly than those in control groups(1 hour P 0.05),but the ratio of type VI/I 3?HSD mRNA gradually increased. Conclusion hCG can stimulate the transcription of P450scc,P450c17 and type VI 3?HSD in adult mouse Leydig cells.

Objective To analyze the pregnant outcome of women with chronic hypertension,and to investigate the high risk factors associated with harmful maternal and perinatal prognosis.Methods Of the 14127 deliveries in Peking University First Hospital from Jan 2001 to Dec 2005,121 pregnant women with chronic hypertension were identified and divided into two groups:chronic hypertension with and without preeclampsia(group PE,64 cases;group N-PE,57 cases).The maternal and perinatal outcomes of the two groups and the high risk factors for adverse maternal and perinatal prognosis were analyzed.Results(1) The incidence of pregnancy with chronic hypertension was 0.86%(121/14127).(2)The incidences of placental abruption,pulmonary edema and retinopathy in groups PE and N-PE were 16%(10/64)vs 2% (1/57),11%(7/64)vs 0 and 41%(26/64)vs 16%(9/57,P