Objective To compare the occurrence of the peripheral retinal degeneration in macular hole due to high myopia (＞-6.00 D) and trauma.Methods Data of 106 patients (106 eyes) with macular hole undergoing vitrectomy operation were analyzed,and they were divided into two groups according to myopic refractive degree:group A (68 eyes of 68 patients with high myopia) and group B (38 eyes of 38 patients with trauma).The peripheral retinas of all patients were examined carefully through preoperative three-mirror contact lens test and intraoperative the vitrectomy surgery.Results There were 52 eyes with peripheral retinal degeneration in group A,accounting for 76.47％,while group B had 8 eyes with peripheral retinal degeneration,accounting for 21.05％ in group B.The occurrence rates of peripheral retinal degeneration between the two groups approached significant difference (x2 =30.48,P =0.000).Among 52 eyes with retinal degeneration in the retina of the group A,non-oppressed whitening degeneration presented in 42 eyes,and the detection rate was 61.76％,lattice degeneration was in 44 eyes,with the detection rate of 64.71％,cystic degeneration in 19 eyes,with the detection rate of 27.94％ and other types of degeneration in 15 eyes,with the detection rate of 22.06％.There were 8 eyes with retinal degeneration in the retina of the group B,and non-oppressed whitening degeneration presented in 6 eyes,with the detection rate of 15.79％,lattice degeneration was in 7 eyes,with the detection rate of 18.42％,cystic degeneration in 4 eyes,with the detection rate of 10.53％ and other types of degeneration in 2 eyes,with the detection rate of 5.26％.Conclusion The occurrence rate of peripheral retinal degeneration in traumatic patients is obvious lower than that in patients with high myopia.

bjective:To investigate the coefficients of TEOAEs and DPOAEs based on various pass/fail criteria. Method:Thirty-six Australia infants were tested (age range: 1～6 months) using both TEOAE and DPOAE. Cohen′s Kappa (K) were used to analyze different criteria.Result:There is a significant low agreement in the screening outcomes between TEOAEs and DPOAEs, and different criteria for TEOAEs.Conclusion:The findings from the study of coefficients among commonly used screening pass/fail criteria suggested that there is no simple relationship among them. The possible reasons for weak agreement were discussed.

Objective To improve mental health of children in the rural area by intervention with moviewatching.Methods The participants were 438 students from Anhui province,including 273 students in grade 5 from two primary schools and 165 students in grade 2 from two middle schools.Subjects were randomly divided into two groups:an intervention group with movie-watching (n=188)and a control group(n=250).Results The inter-group difference between the pre-measurement and the post-measurement on depression and anxiety of the intervention groups and the control groups in grade 5 from two primary schools was not significant,while the intergroup difference between the pre-measurement and the post-measurement on value8(the intervention group (2669.52±2216.43),the control group(316.57±1410.83)),and the inter-group difference was significant(t_(values)=10.721,P=0.000).The inter-group difference between the pre-measurement and the post-depression, anxiety and values of the interntion groups and the control groups in grade 2from two middle schools was significant(t _(depression)=2.046,P=0.043;t _(state amxoetu)=3.507,P=0.001;t _(trait anxiety)=3.392,P=0.001;t _(values)=5.022,P=0.000)respectively).The intervention effect on mood of depression,anxiety and the values of intervention groups in grade 5 from two primary schools was not significant,while significant on values(F=91.62,P=0.000);while that of intervention groups in grade 2 from two =0.000 respectively).Conclusion Movie-watching intervention wag an effective way to improve middle school students' mental health and to develop correct values.Movie-watching should be an alternative way to improve met-al health of children in rural area for its operability.

Adult ; Cytomegalovirus ; Cytomegalovirus Infections ; Humans ; Liver Failure

Objective To study the expression of CD163 in macrophages and sCD163 level in the serum of neonatal rat model of Escherichia coli (E. coli) sepsis. Methods A total of 72 specific-pathogen-free (SPF) neonatal rats (P7) were randomly and equally assigned into experiment group and control group. E. coli was injected peritoneally and the sepsis model was established in the experiential group while normal saline (NS) was injected in the control group. Samples were collected at 2, 4, 6, 12, 24 h and 48 h after the treatment. CD163 expression in macrophages of lung and liver tissues were tested using immunohistochemical(IHC) method, and the dynamic changes of sCD163 concentration in the serum were monitored usingenzyme-linked immunosorbent assay (ELISA) method. Results In the experiment group, CD163 expression in macrophages of lung and liver were gradually decreased at eachtime point (P <0. 001). At 2 h, CD163 expression in macrophages showed no significant differences between the two groups (P >0. 05). At 4 h and later timepoints, the differences were statistically significant (P <0. 001) . Meanwhile, sCD163 in the serum increased gradually (P <0. 01). At 2 h, sCD163 in the serum showed no significant differences between the two groups (P >0. 05). At 4 h and later timepoints, the differences were statistically significant (P <0. 001). Conclusions CD163 plays an important role in sepsis.

Objective To observe any effect of low intensity pulsed ultrasound (LIPUS) on the expression of integrin-focal adhesion kinase (FAK)-mitogen-activated protein kinase (MAPK) mechanochemical transduction pathway-related proteins in the chondrocytes of rabbits with knee osteoarthritis (OA).Methods Of the 18 New Zealand white rabbits selected for the study,twelve received knee anterior cruciate ligament transection to model OA.The remaining 6 rabbits served as normal controls.At the 4th week after modeling the rabbits were sacrificed and chondrocytes were isolated and cultured in vitro.All the cultured cells were randomly divided into three groups:a normal control group (NC),an OA model group (OA) and an OA model plus LIPUS group (OA + LIPUS).When the cells had been cultured to the 2nd passage,the NC group and OA group cells had received no treatment.The OA + LIPUS group cells were exposed to 40 mW/cm2 of LIPUS for 20 min,once a day for 6 days.The expression of collagen protein type Ⅱ,aggrecan,MMP-13,integrin β1 p-FAK and p-p38,p-ERK1/2 and p-JNK Mapks were detected by Western blotting.Results Compared with the NC group,the expression of collagen type Ⅱ and aggrecan was significantly lower in the OA and OA + LIPUS groups,with more significantly lower expression of collagen type Ⅱ and aggrecan in the OA group than in the OA + LIPUS group.Compared with the NC group,the expression of MMP-13 was significantly higher in the OA and OA + LIPUS groups,with a significantly larger increase in the OA group.Compared with the NC group,the expression of integrin β1 and p-FAK was also significantly higher in the OA and OA + LIPUS groups,with a significantly larger increase in the OA + LIPUS group.Compared with the NC group,the expression of p-p38,p-ERK1/2 and p-JNK was also significantly higher in the OA group,but compared with the OA group,the expression of those kinases was,on average,significantly lower in the OA + LIPUS group.Conclusions LIPUS can inhibit the degradation of collagen type Ⅱ and aggrecan,and inhibit the expression of MMP-13,p-p38,p-ERK1/2 and p-JNK in OA chondrocytes,at least in vitro.At the same time,LIPUS can increase the expression of integrin β1 and p-FAK.The results show that LIPUS may activate an integrin-FAK-MAPK mechanochemical transduction pathway to induce changes in the extracellular matrix of chondrocytes.

Objective To investigate the utilization of contrast-enhanced ultrasound (CEUS) for the detection of splenic artery steal syndrome (SASS) after orthotropic liver transplantation (OLT).Methods Color Doppler flow imaging (CDFI) were performed at various time points post-operatively.CEUS and celiac angiography were conducted in patients suspected of SASS.Results 9 patients were suspected of SASS by slim or undetectable hepatic arterial Doppler blood signals by CDFI at various time points postoperatively.CEUS in 9 patients showed a delayed and weak contrast-enhanced blood signal in the hepatic artery associated with a rapid and intense enhancement of portal venous blood.No narrowing of a hyperintense signal was observed in the hepatic artery by CEUS.The 9 diagnoses of SASS were proven by celiac angiography.Conclusions SASS is identified as a sluggish and weak hyperintense blood signal in the hepatic artery without the narrowing and interruption of hypeintense signal in CEUS.CEUS is an effective imaging modality for detection of SASS following OLT.

BACKGROUND: Antigene RNAs (agRNAs) could be a useful tool to downregulate beta arrestin 2 (Arrb2) gene expressions, and realize gene knock-out effect in cell levels. OBJECTIVE: To observe the effects of agRNAs on DAMGO-induced mu-opioid receptor (MOR) desensitization in C17.2 cells by using agRNAs complementary to transcription start sites of beta arrestin 2 (Arrb2) to downregulate the gene expression in mouse C17.2 cells. METHODS: Mouse neural stem cells C17.2 was cultured in Dulbecco's minimal essential medium containing 10% fetal bovine serum, 10 mg/L penicillin and 10 mg/L ampicillin with 5% CO_2 at 37 ℃. The cells were passaged every 5 to 6 days after digestion with 0.25% trypsin when cells were 80% confluent. The expression of MOR on mouse C17.2 cells was detected by RT-PCR and immunocytochemical method. AgRNAs which could silence the expression of Arrb2 was transfected into C17.2 cells with Lipofectamine. The expression of green fluorescent protein gene was observed by fluorescence microscopy 24 hours after transfection. [~(35)S]GTPγS binding was assessed by autoradiography to examine the ability of the MOR to couple to G proteins on stimulation with selective agonist DAMGO.RESULTS AND CONCLUSION: The expression of MOR on C17.2 cells was confirmed by RT-PCR. The receptors were expressed on cell membrane and in plasma determined by immnocytochemistry. The expression of green fluorescent protein gene could be observed in C17.2 cells transfected with plasmid pGPU6/GFP/Arrb9 using fluorescent microsocpe. The results of [~(35)S]GTPγS binding showed that the stimulation ratio in cells with and without DAMGO stimulation or transfected with agRNAs were (113±14)%, (253±17)% and (239±15)% respectively. This indicated that agRNAs could downregulate the expression of beta-arrestin 2 and inhibit the desensitization of MOR.

The cytotoxicity of medical ultrasonic couplant was tested by MTT assay and agar overlay test. By MTT assay, when the inoculum density was high, the cytotoxicity level was low, or vice versa. The cytotoxicity grade tested by agar overlay was not accord to MTT assay's too. MTT assay is suitable to test the cytotoxicity of medical ultrasonic couplant because it is quantitative and more sensitive, however, the experimental condition and the preparative method of extraction should be determined.
Animals ; Cell Line ; Colorimetry ; Cytotoxicity Tests, Immunologic ; methods ; Mice ; Ultrasonics

Objective To observe the effect of low intensity pulsed ultrasound (LIPUS) on chondrocytes co-cultured with infrapatellar fat pads.Methods Twenty-four infrapatellar fat pads and cartilages from female knee trauma patients aged between 25 and 35 were cut and stained using hematoxylin-eosin staining.Chondrocytes were isolated from part of the integrated surface of the cartilages to be cultured in vitro.They were then randomly divided into a normal chondrocyte group (the control group),a normal chondrocyte+FCM (fat conditioned medium) group (the model group),a normal chondrocyte+ FCM + LIP US group (the treatment group),and a normal chondrocyte+ FCM + LIPUS + GRGDSP (an integrin inhibitor) group (the inhibited group).The treatment group and inhibited group received LIPUS at 40 mW/cm2 for 20 min once a day,while the other groups received sham LIPUS treatment.Five days later,the cells were collected and western blotting was used to examine the expression of type Ⅱ collagen (COL2),aggrecan (Acan),matrixmetalloproteinase (MMP)-13,integrin β1,phosphorylation-focal adhesion kinase (p-FAK) and phosphorylation p38 (p-p38).Results Western blotting showed that compared with the control group,the expression of COL2 and Acan was significantly lower in the model group,but that of MMP-13,integrin β1,p-FAK and p-p38 was significantly higher.As compared with the model group,the expression of COL2,Acan,integrin β1 and p-FAK was significantly higher,and that of MMP-13 and p-p38 was significantly lower in the treatment group.The expression of COL2,Acan,MMP-13,integrin β1,p-FAK and p-p38 showed no significant difference between the inhibited and model groups,but that of COL2,Acan,MMP-13,integrin β1,p-FAK and p-p38 was significantly different between the control and treatment groups.Conclusions LIPUS provides a protective effect on chondrocytes through inhibiting the expression of MMP-13 induced by adipokines and the degradation of COL2 and Acan through activating the integrin-FAK-p38 MAPK pathway.