Objective To evaluate the biocompatibility of acellular bladder matrix patch as the pelvic floor repair alternative ma-terial .Methods The combination of in vivo and in vitro biological experiments including cytotoxicity ,haemolysis and vaginal im-plant tests were employed to evaluate the biocompatibility of this material .Results In the cytotoxicity test ,the material toxicity was the grade 0-1 .The hemolysis rate of the material extract liquid was 1 .5% .The general and histological observation showed that the material did not cause the host immunologic rejection and led to slight foreign body reaction after implanting ,which was ba-sically degraded in 12 weeks after transplantation .Conclusion Acellular bladder matrix exhibits better biocompatibility ,but needs to adjust its degradation rate in order to adapt to the requirements of pelvic floor repair operation .

Objective:To observe the efficacy of rosuvastatin combined with the conventional treatment in the patients with acute cerebral infarction (ACI) and the influence on the serum levels of MMp2, vasostatin-2 and sICAM-1.Methods:Totally 136 patients with ACI were randomly divided into the routine treatment group and the rosuvastatin group with 68 ones in each .The patients in the routine treatment group were treated with the conventional treatment , and those in the rosuvastatin group were treated with rosuvastatin additionally.The treatment course was 15 days.The efficacy, adverse drug reactions and the changes of MMp 2, vasostatin-2 and sI-CAM-1 in the two groups were compared .Results:The effective rate was 92.65%in rosuvastatin group and that was 77.94%in the routine treatment group, and the difference was statistically significant (P<0.05).After the treatment, the levels of MMp2, vasosta-tin-2 and sICAM-1 for the mild, medium and severe types in the two groups were significantly decreased when compared with those be -fore the treatment (P<0.05), and the decrease for the same type in rosuvastatin group was more notable than that in the routine treat -ment group (P<0.05).The indices for different subgroups with various infarcts in rosuvastatin group were all lower than those for the same subgroup in the routine treatment group (P<0.05).The incidence of adverse drug reactions (ADR) in two group was no signifi-cant difference (P>0.05).Conclusion:Rosuvastatin used in the patients with ACI has better clinical efficacy than the routine treat-ment, which can reduce the levels of MMp 2, vasostatin-2 and sICAM-1 and is worthy of clinical promotion .

Objective To explore the real ear to coupler difference (RECD) changes in children with hearing aids .Methods 132 severe to profound hearing impaired children who came to hearing center for hearing aids exami-nation and adjustment were recruited into the study .They were put into 6 groups according to the test age ,<1 yr group(15 cases) ,1 yrs group(26 cases) ,2 yrs group(36 cases) ,3 yrs group(29 cases) and 4 yrs group(26 cases) . And all of them had the RECD tests for both ears with custom earmolds .Results The average RECDs for both ears decreased with the age increased .There were statistically differences for the same lateral ears when age differences surpass 2 years except for the difference for left ears between the children in the <1 yr group and 2 yrs group .This study showed there were statistically differences between left and right ears for majority of groups (except for 2 yrs group) .Conclusion RECD is an important factor for individual adjustment .The current results show that the chil-dren with hearing aids should have RECD tests for both ears at least once per two years .

Objective To study the correlation between cognitive distress and tinnitus related handicaps.Methods One hundred and ninety-two primary tinnitus subjects ninety-nine males and ninety-three females were included in this study.The average age was 45±15.52 years old.The average durations of tinnitus for male and female were 25.67±37.71 months and 27.12±45.42 months, respectively.The patients were asked to fill the Mandarin tinnitus questionnaire (MTQ) and Mandarin (Chinese) tinnitus handicap inventory (THI-CM).The correlation between cognitive distress (CD) and tinnitus related handicap was studied.Results The average score of MTQ was 36.95±20.06.The average score of CD (Q17,18,23,41, and 42)was 2.61.The average score of question 17,18, 23,41, and 42 of MTQ was 2.81,2.63,2.59,2.40, and 2.41,respectively.The average score of THI-CM was 23.89±20.06.The correlation between CD and THI-CM was 0.64(P<0.01);for male and female were 0.63 and 0.66(P<0.01),respectively.The correlations between CD and THI-CM among young, middle and old age groups were 0.02,0.07 and 0.38(P>0.01),respectively.The correlations between CD and THI-CM among the nondisabled, mild, moderate and severe groups according to the scores of THI-CM were 0.30(P<0.01),0.29(P>0.01),-0.12(P>0.01), and 0.23(P>0.01),respectively.Conclusion No strong correlation was demonstrated between the CD and the THI-CM.The same results were shown for males and female.No correlation was demonstrated between ages and cognitive distress.Correlation coefficient of cognitive distress was increased with age.The tinnitus handicaps of patients might be vulnerable to cognitive distress with ageing.

Objective To explore the signal-to-noise ratio loss (SNR loss) of the people with normal pure-tone audiograms .Methods A group of 10 patients were recruited into the study ,who complained they could not hear speech clearly in the real world environment but had normal pure-tone audiograms ,immittance and word rec-ognition score (WRS) results .The Mandarin hearing in noise test (M-HINT ) was administered to them and the results were compared to the normal ranges published in the journal .Results All of them had SNR loss when noise (speech spectrum) came from front of them ,but 9 patients had SNR loss when noise came from 90 degree left or 90 degree right of them .Conclusion The current study showed the patients had speech hearing loss in the noisy envi-ronment ,regardless of whether they had normal audiograms ,immittance and WRS results .So we should pay atten-tion to such patients and adopt some special tests (eg M-HINT) .It is better for us to communicate and counsel with them .

Objective To investigate residual hearing of children with sensorineural hearing loss in whom wave V was not found in ABR testing and to emphasize the importance of behavioral audiometry in determining the residual hearing.Methods Residual hearing obtained by behavioral audiometry of 101 children with SNHL was studied in relation to the absence of wave V in both click-ABR and tone burst-ABR tests.Results All children have residual hearing of different degrees at different frequencies.There appeared to be a higher percentage of lowfrequency residual hearing than middle and high frequencies.Also,the residual hearing at low frequencies appeared to be better than those in the middle and high frequencies.Average residual hearing thresholds in the right ears from 500 to 4 000 Hz were 106.81±7.13,110.00±7.90,111.78±5.22,112.06±7.08 dB HL and those in the left ears were 98.01±3.98,111.30±7.18,112.06±7.08,108.33±7.23 dB HL.Conclusion The absence of wave V in ABR does not mean total deafness.For those children with no wave V in ABR,behavioral audiometry must be conducted to determine children's behavioral hearing thresholds in order to know their residual hearing.

Objective To explore the clinical value of ITMAIS in the early prelingual auditory development (EPLAD)assessment for bilateral profound hearing impaired children with hearing aids.Methods Profound sensorineural hearing impaired children fitted with hearing aids during October 2008 and July 2011 in our center were recruited in this retrospective study, and they would be tested with the ITMAIS at baseline, 3 months, and 6 months after hearing aids fitting.A total of 51 children were recruited in the study, and divided into 2 age groups according to the age at fitting, 1 yr group (28 children) and 2 yrs group (23 children).Results The EPLAD of children in both groups improved significantly in the first half of year after fitting (P<0.05).The mean EPLAD levels of children in both groups were close to or achieved the mean level of severe sensorineural hearing impaired children without intervention when they had had the hearing aids for 6 months.Conclusion Hearing aids could help the children with profound sensorineural hearing loss to improve the abilities of EPLAD.ITMAIS is a simple, an effective tool for assessing the early outcome of children with hearing aids, especially for the children who could not cooperate with the behavioral hearing test.

Objective We undertook this study to analyze anxiety in tinnitus patients .Methods The partici‐pants were recruited from patients seeking treatment for primary tinnitus and were asked to complete self rating anx‐iety scale(SAS)and Chinese (Mandarin) tinnitus handicap inventory(THI -CM) .Results A total of 224 tinnitus patients were included in the study .The mean score of SAS was 46 ± 2 .55 .The average SAS score among different degrees of anxiety (no ,mild ,moderate ,severe) participants were 65 .63% ,20 .54% ,8 .04% ,5 .80% .The average SAS score for male and female were 46 .35 ± 12 .81 ,46 .28 ± 12 .40 ,respectively .No statistic differences were ob‐served among different genders whenever the degrees of anxiety and different ages (p>0 .01) .The mean SAS scores among young ,middle ,old age groups were 47 .72 ± 12 .80 ,44 .56 ± 12 .83 ,40 .28 ± 7 .24 ,respectively .The pearson correlation between tinnitus duration and the score of SAS was 0 .36(P=0 .594) .The pearson correlation between the scores of THI-CM and SAS was 0 .548(P<0 .01) .Conclusion Most tinnitus participants had mild or didn't have anxiety .Only 13 .84% participants have moderate or severe anxiety .Tinnitus handicap degree increased with the increase of anxiety .No anxiety difference was observed among different sex ,tinnitus duration and age groups . The anxiety of young age group was more severe than that of old groups .

OBJECTIVETo investigate the effect on intramuscular connective tissue and passive range of joint motion by the stress produced in limb lengthening.

METHODSAn animal model of limb lengthening was established in the tibia of rabbits. Distraction was initiated at a rate of 1 mm/d and 2 mm/d in two steps respectively, and both proceeded until 10% and 20% of the tibia length was achieved. Muscle samples were harvested at the time when distraction ended and at the 4th week of consolidation after the distraction. Scanning electron microscope was applied to observe the morphological changes of the perimysium. The goniometer, which we made for this study, was used to measure the passive range of joint motion.

RESULTSThe collagen fibers were partitioned in bundles, crimped and interconnected closely and orderly. In the regime of 1 mm/d distraction with 10% lengthening, no apparent changes of the collagen fiber and passive range of joint motion was demonstrated. When tibia was increased to 20%, the crimped fibers showed a tendency of being straightened while the passive range of joint motion was reduced. The findings remained the same at the 4th week of consolidation. In the regime of 2 mm/d distraction with 10% lengthening, the crimped structure of the collagen fibers in the perimysium disappeared and the fibers were almost straightened. Additionally, the interconnection of the collagen fibers became loosened and interstice was presented among the fibers. At the 4th week of consolidation, the restoration to the original crimped structure was not completed. When the lengthening ratio was increased to 20%, the collagen fibers were straightened completely. This condition remained unchanged throughout all 4 weeks. The passive range of joint motion was reduced dramatically in the regime of 2 mm/d distraction.

CONCLUSIONThe ultrastructure of perimysium and the passive range of joint motion in the regime of 1mm/d lengthening shows the condition closest to the normal ones. The regime of 2 mm/d lengthening may cause an apparent change in the ultrastructure of perimysium and passive range of joint motion.

Animals ; Bone Lengthening ; Collagen ; ultrastructure ; Connective Tissue ; injuries ; physiology ; ultrastructure ; Male ; Osteogenesis, Distraction ; Rabbits ; Range of Motion, Articular ; physiology ; Regeneration ; physiology

Objective To summarize the experience of diagnosis, treatment and prognosis of solid pseudopapillary tumors of the pancreas (SPT) in China. Methods The Chinese literature from January 1992 to April 2009 in Chinese Journal Full-text Database was systematically searched and a total of 439 cases of SPT from 42 reports were found. Clinical data of these cases were retrospectively analyzed. Results Among 439 was 28 years old (range 8 ～76 yrs). The clinical symptoms were recorded in 377 cases, including abdominal pain (35. 3%), mass (31. 3%), discomfort (7. 7%). 101 patients (26. 8%) were completely asymptomatic, and the lesions were detected during routine check-up. All of the patients underwent surgical resection. The preoperative misdiagnosis rate was 65.4% ( 161/246 ). The rate of curative resection was 97.3% (427/439). Mean diameter of the tumor was 7.8 cm ( range 1.5 ～ 25.0 cm). Among 394 patients with information on metastases or invasions, 80 patients(20.3% ) were positive. In all patients, 418(95.2% )were followed up and the mean follow-up period was 34 months ( range 1 month to 25 years ). During the follow-up period, 403 ( 96. 4% ) patients were alive with no evidence of recurrence or metastases, local recurrence developed in 4 patients, the liver metastases developed in 6 patients, 4 patients died from the disease. Conclusions SPT is a rare and potentially low-grade malignant tumor, and predominantly affect young women. The correct diagnosis depends on the histopathological examination. Radical surgical resection is the only effective treatment for SPT, which usually has an excellent prognosis.