OBJECTIVE:To provide reference for improving the practical application of fluorescence quantitative reverse tran-scription-polymerase chain reaction (RT-PCR) for the live-attenuated mumps vaccine manufacturing. METHODS:A regression equation of standard titer-ct value was established;micro cytopathic effect(micro-CPE)and fluorescence quantitative RT-PCR were respectively adopted for the titer of 10 batches of single harvest liquid of live-attenuated mumps vaccine and end products,and the results were compared. RESULTS:According to the t-test analysis,the P were respectively 0.743 and 0.868,and the average val-ues were in the range of (-0.174,0.094) and (-0.113,0.153),with no significant differences. They were similar. CONCLU-SIONS:Fluorescence quantitative RT-PCR can be used for the titer detection of single harvest liquid and end products in the pro-cess of live-attenuated mumps vaccine manufacturing. And it is expected to further upgrade to Chinese Pharmacopoeia method.

Objective The aim of this study is to explore the significance of fitting hearing aids before cochle_ar implantation by studying the postoperative impact on neural response telemetry (NRT ) threshold ,the subjective threshold(T -level) and maximal comfort level(C-level) values .Methods A total of 45 patients with cochlear im_plants were divided into 3 groups:patients in group HA1(n=17)had worn hearing aids preoperatively more than 6 months and the age of starting wearing hearing aids was yonger than 3 .5 years old ,patients in group HA2(n=8) had worn hearing aids preoperatively more than 6 months and the starting age was older than 3 .5 years old ,patients in group NHA(n=20 )never wore hearing aids before ACI .The postoperative electrode impedance ,NRT value and T -level and C -level were evaluated at 3rd ,6th ,and 12th months ,respectively .ResuIts Electrode impedances were 10 .9 ± 2 .1 kΩ in NHA group ,10 .5 ± 2 .3 kΩ in HA1 group ,10 .7 ± 2 .7 kΩ in HA2 group ,respectively ,and there were no statistically significant differences .Significant differences were found between group HA1 and group NHA ,group HA1 and group HA2 in terms of NRT threshold value ,T -level or C-level(P<0 .05) .There were no statistically significant differences between group HA2 and group NHA with respect to NRT threshold values ,T-level as well as C-level(P>0 .05) .ConcIusion The results of this study showed that wearing hearing aids for a longer time before CI was beneficial for hearing rehabilitation postoperatively .

OBJECTIVE: To investigate the bacteria distribution, drug bacterial sensitivity characteristics of the rural chronic rhinosinusitis (CRS). And to explore the effect of antibiotic on pathogenic bacteria culture. METHOD: Choose nasal sinus secretions from 115 CRS patients living in rural areas. Aerobic bacteria culture, anaerobic bacteria culture and drug sensitive test were procedured for each sample. At the same time the use of antibiotics nearly 2 months and nearly 2 weeks were collected. RESULT: Among one hundred and fifteen specimens, 17 kinds of germs were detected in 37 cases, the positive rate of aerobic bacteria was 32.17%. Staphylococcus aureus and epidermis staphylococcus aureus the most common type of aerobe in CRS patients at rural areas. There was negative result in the anaerobic bacteria culture of 17 maxillary sinus specimen. The cases of using antibiotics nearly 2 months was up to 90, accounting for 78.26%. Nearly 2 weeks, 73 cases, accounting for 63.48%. The chi-square analysis showed high bacterial culture rate, in chronic rhinosinusitis with nasal polyps (CRSwNP group), which revealed correlation between bacterial infection factors and nasal polyps formation. For CRS patients with positive result of bacterial culture, they were sensitive to ofloxacin, cefotaxime, organism, ciprofloxacin, magnitude cephalosporin, and were drug fast to penicillin G, ampicillin, erythromycin. CONCLUSION No specific differences was found in the bacteria distribution of rural CRS. antibiotics abusage in rural CRS patients and the anaerobic bacteria culture techniques is the main factor resulting in low culture rate. Rational use of antimicrobial agents should be established on the basis of the bacterial culture and drug sensitive test.
Adolescent ; Adult ; Aged ; Anti-Bacterial Agents ; therapeutic use ; Bacteriological Techniques ; Chronic Disease ; Female ; Humans ; Male ; Microbial Sensitivity Tests ; Middle Aged ; Rural Population ; Sinusitis ; drug therapy ; microbiology ; Young Adult

ObjectiveTo investigate the expression and the clinical significance of Clusterin protein in invasive ductal breast cancer.MethodsThe expression of Clusterin protein in 70 cases of invasive ductal breast cancer,20 cases of breast hyperplasia,and 10 cases of adjacent normal breast tissue was examined with SP immunohistochemistry (IHC),and their correlation with some clinicopathological parameters were studied.ResultsClusterin expression was detected in 71.4％of breast cancer tissues,which was significantly higher than that in benign lesions (20.0 ％) and adjacent normal tissues (0) (x2 =17.143,P ＜ 0.05; x2 =19.048,P ＜ 0.05).Clusterin expression in breast cancer was relevant to the histological grade (x2 =5.233,P ＜ 0.05),lymph node metastasis (x2 =4.677,P ＜ 0.05),and the progression in the clinical stage (x2 =4.667,P ＜ 0.05),but irrelevant to the age (x2 =0.024,P ＞ 0.05) and tumor size (x2 =0.406,P ＞ 0.05).Clusterin expression was negatively correlated to the expression of ER and PR in breast cancer tissues (r =-0.362,P ＜ 0.05 and r =-0.290,P ＜ 0.05,respectively),but uncorrelated with C-erbB-2 expression(r =0.129,P ＞ 0.05).Conclusion Clusterin overexpressed in breast cancer tissues suggests an important role of clusterin in invasive ductal breast cancer carcinogenesis and development through inhibition of cell apoptosis. It may become new clinical diagnosis marker for breast cancer and novel target for breast cancer therapy.

Caveolin-1(Cav-1) is a scaffold protein of caveolae that acts as a tumor modulator by interacting with cell adhesion molecules and signaling receptors.Evidence from a variety of studies indicate that caveolin-1 exhibits the heterogeneity of Cav-1 expression in different tumors.Current research has clearly established a role for Cav-1 as a a novel prognostic marker,Future studies will undoubtedly offer novel exciting opportunities to develop anti-cancer therapies.

Objective To study the serum free carnitine level and change trend in premature infantwith hyaline membrane disease (HMD) within postnatal 7 d .MethodTotally 63 preterm newbornwith gestational age of 28-32 weekin the NICU of thihospital were selected ,among them 32 caseof HMD were taken athe observation group and othe31 preterm newbornwithouHMD athe control group .The free carnitine level wameasured within 6 h aftebirth ,on 3 ,7 d by using the tandem masspectrum method .ResultThe free carnitine level within 6 h aftebirth had no statistical difference between the observation group and the control group[(23 .57 ± 7 .45)μmol/L v.(24 .34 ± 5 .73)μmol/L ,t=0 .48 ,P=0 .630] ,the free carnitine level on 3 d in the observation group wasignificantly lowethan thain the control group [(19 .21 ± 6 .83)μmol/L v.(23 .74 ± 7 .13)μmol/L ,t=2 .57 ,P=0 .010];the free carnitine level on 7 d in the observation group waalso significantly lowethan thain the control group [(16 .62 ± 7 .95)μmol/L v.(22 .83 ± 6 .56)μmol/L ,t=3 .39 ,P=0 .001] .The free carnitine level aftebirth in the control group remained stable ,which a3 time pointof 6h ,3 ,7 d had no statistical difference(F=0 .42 ,P=0 .660);whereathe free carnitine level wagradually decreased aftebirth ,which a3 time pointof 6 h ,3 ,7 had statistical difference(F=7 .13 ,P=0 .001) .Conclu-sion The free carnitine level aftebirth in preterm newbornwith HMD igradually decreased ,which needmore carnitine fopromoting the generation of pulmonary surfactan.

Objective To study the indications ,surgical techniques of cochlear implantation in bilateral severe sensorineural hearing loss patients with otitis media with effusion .Methods Retrospective study of the data was col-lected from 30 bilateeral severe sensorineural hearing loss patients receiving cochlear implantation .CI was performed with round window insertion in 30 patients with otitis media with effusion .Results One stage operations of CI with round window insertion were carried out for 30 patients with otitis media with effusion .All electrodes were implan-ted successfully ,in which the CI went normally and electrode array were protected well .All implant devices had worked normally and all patients had performed well during an average of 1~3 years follow -up .Conclusion Bilat-eral severe sensorineural hearing loss patients with otitis media with effusion could be performed cochlear implanta-tion with round window insertion in one stage ,and it was safe and effective .

Objective The goal of the present experimental study is to investigate effects on the injection of a-dult rabbit autologous skeletal myoblasts into the thyroarytenoid(TA)muscle after recurrent laryngeal nerve (RLN) damage and traumatic vocal cords .Methods 20 adult New Zealand white rabbits were used for the establishment of an animal model simulating the cut -off of the left recurrent laryngeal nerve and the left vocal cord trauma scar for-mation after traumatic damage .Then from the rabbits ,the sternocleidomastoid muscle cells were cultured ,separa-ted and expanded .After 12 weeks ,the 20 animals were randomly divided into group A ,group B with 10 in each group .Group A(myoblast injection group) in the left vocal cord thyroarytenoid muscle injection of myoblasts 0 .3 ml ,the right vocal cord without any treatment served as normal controls ;Group B(saline injection control group) in the left vocal cord thyroarytenoid muscle was injected with normal saline ,the right vocal cord without any treatment as normal controls ,respectively ,were observed after 12 weeks of bilateral thyroarytenoid muscle fiber diameters and vocal cord volumes .Results After 12 weeks ,Group A's left thyroarytenoid muscle injection of bilateral thyroaryten-oid muscle fiber diameter and the vocal volume size was not significantly different (P>0 .05) ,thyroarytenoid muscle fiber diameter and the vocal cord volume on Group B's injected side was significantly smaller than Group A (P<0 .05) .Conclusion The thyroarytenoid muscle injection of autologous myoblasts can effectively treat recurrent la-ryngeal nerve (RLN) injury and traumatic vocal cords .

With redox-sensitive fluorescene probes DCFH-DA and DHR123, the formation of cytosolic and intramitochondrial reactive oxygen species (ROS) inside immature rat cerebellar granule cells during the apoptosis induced by nitric oxide donor S-nitroso-N-acetyl-pennicillamine (SNAP) was monitored by laser confocal scanning microscopy. The cytosolic and intramitochondrial ROS increase significantly after 0.5 mmol/L SNAP treatment for 1 h. Pre-treatment with the nitric oxide scavenger hemoglobin can effectively inhibit the formation of cytosolic and intrarnitochondrial ROS and protect neurons from apoptosis. Adding glutathione can also protect neurons from apoptosis, and the cytotoxity of nitric oxide increases significantly while the synthesis of glutathione is inhibited. The results indicated that ROS might be involved in NO-induced apoptosis in neural cells and glutathione might be the endogenesis antioxidant to protect neurons from oxidative injury.

Objective To approch the characteristic of diagnosis and treatment of optic nerve injury in double wall optic canal.Methods Six patients,with double wall optic canal found by CT,were treated by drug,operation and visual rehabilitation training.The results of CT,vision-evoked potential and visual recovery were analysed.Results In 6 patients,4 were holo-double wall optic canal and 2 were mero-double wall optic canal,4 were found having bone fracture.All the 6 cases were effective to treatment including 3 patients whose vision was over 0.1.Conclusion In double wall optic canal,the degree of optic nerve injury is slight,visual recovery is better by drug,operation and visual rehabilitation training.