Female ; Humans ; Lymph Nodes ; Lymphatic Metastasis ; Middle Aged ; Neck ; Nose Neoplasms ; pathology ; Rhabdomyosarcoma, Embryonal ; pathology

Now the in-service staff have been permitted to apply for master's degree with the same educational level aspostgraduates. This is a signal reforming policy in postgraduate education and degrees management area in China. Manyhigher professionals are trained for our socialist modernization construction by this education technology. Although therelatively perfect system to manage this project was established in China, there are still some problems demandingprompt solution on the management thoughts, management process as well as management methods in some authorizedunits.

Objective To study the bioactive components from stems of Schisandra propinqua var. intermedia. Methods Compounds were separated with acombination of multi-chromatography. Their che- mical structures were determined on the basis of spectral analysis and chemical evidence. Results Nine compounds were isolated from S. propinqua var. intermedia. The structures were elucidated as vanillic acid- 4- O-?-D-allopyranoside (Ⅰ), salidroside (Ⅱ), 2-hydroxy-5-(2-hydroxyethyl)-phenyl-?-D-glucopyranoside (Ⅲ), 3, 4-dimethoxyphenyl-4-?-D-glucopyranoside (Ⅳ), 3, 5-dihydroxybenzoic acid-4-O-?-D-glucopyranoside (Ⅴ), 3, 5-dimethoxy-4-hydroxy-benzoic acid (Ⅵ), 4-methoxy-benzoic acid (Ⅶ), vanillic acid (Ⅷ) and protocatechuic acid (Ⅸ). Conclusion Compound Ⅰ is a new phenolic alloside and others are isolated from S. propinqua var. intermedia for the first time.

Berbamine ( Ber. ) is a bis-benzyl-isoquinoline alkaloid isolated from the traditional Chinese medical herb, Berberis poiretis, and has Vide pharmacological effects. Clinical studies have demonstrated that Ber. had an effect of ingreasing the number of leukocytes in various leukocytopenia. But, up till now it has not been reported that Ber. take effect on enzymic metablism of inner cell and isoenzyme in the process of increasing leukocyte. The experiment observed the mice dynamic change of LDH in leukocyte and LDH isoenzyme of serum by cytochemistry and plane polyacrylamide gel electrophoresis tech-nigue. The result indicates that LDH enzyme reaction of granulocyte have increased in Ber. group and intensity of enzyme reaction has a positive interralation with the time of administrations. All specimen show 5 zones after LDH isoenzyme pattern analyse. The proportion of LDH-5 was changed and LDH-5 sub-band was detected in control and combination group. The experiment indicated that Ber. can affeet enzymic metablism of inner cell in the process of increasing leukocyte. There was simultaneously with a change in ratio of LDH isoenzyme pattern.

BACKGROUND: Telomerase can maintain the telomere length and avoid cel replicative senescence and apoptosis in somatic cells. Its catalytic subunit cal ed telomerase reverse transcriptase has roles in mediating cellsurvival and anti-apoptotic functions. OBJECTIVE: To evaluate the effects of human telomerase reverse transcriptase on amyloid β1-40-induced human embryonic cortical neurons injury. METHODS: Human cortical neurons derived from 12-16 weeks old aborted fetuses were transfected with recombinant adenovirus vector encoding human telomerase reverse transcriptase. Expression of human telomerase reverse transcriptase was evaluated by immunocytochemical staining. Telomerase activity was measured using a PCR-based telomeric repeat amplification protocol enzyme-linked immunosorbent assay kit. Human embryonic cortical neurons were treated with 10 μmol/L ol/L amyloid β1-40 after transfected for 3 days. Cel viability, reactive oxygen species levels and glutathione contents in human embryonic cortical neurons were respectively detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, fluorescent probe 2',7'-dichlorodihydrofluorescein diacetate and chromatometry. RESULTS AND CONCLUSION: Expression of human telomerase reverse transcriptase reached peak at 3 days after transfection, and the telomerase activity was rebuilt; 10 μmol/L amyloid β1-40 could significantly reduce the cel viability of neurons and glutathione content (P < 0.05 and P < 0.01), and increase the reactive oxygen species levels (P < 0.05). The neurons transfected with human telomerase reverse transcriptase gene could be significantly against the toxicity of amyloid β1-40 and increase the cel viability and glutathione content (P < 0.05 and P < 0.01), and decrease the reactive oxygen species levels (P < 0.05). The results indicate that human telomerase reverse transcriptase can protect amyloid β1-40-induced human embryonic cortical neurons injury

A high performance liquid chromatography-tandem mass spectrometric( HPLC-MS/MS) method was developed for the simultaneous determination of four phenolic and salicylanilide anthelmintics including nitroxinil, oxyclozanide, closantel and rafoxanide in cattle and ovine tissues. Muscle, liverand kidney were extracted with acetonitrile-acetone(60:40, V/V)and fat with 1% triethylamine in acetonitrile, then the extract was purified with MAX solid-phase extraction column. Qualitative and quantitative analysiswas achieved by HPLC-MS/MS undernegative multiple reaction monitoring ( MRM) mode. Good correlation coefficients were obtained (R>0. 99) in the concentration range of 1-100 μg/L. The limits of detection (LOD) and limits of qualification (LOQ) for the four compounds were 1 and 2. 5 μg/kg, respectively. The mean recoveries at the four levels of LOQ, 0. 5 maximum residue limit (MRL), MRL, 2MRL were between 71% and 112%,with the intra-day relative standard deviation(RSD)in the range of 1. 1%-14. 0%and inter-day RSD in the range of 6. 4%-14. 7%. Forty samples from the market were analyzed with the method, only two samples were found to show phenolic and salicylanilide anthelmintics residues.

Objective To explore true thoughts and experience about student-based nursing teaching rounds among vocational college nursing students in Pediatric during the initial stage of clinical practice.Methods Interview was conducted on 27 nursing students of seven focus groups with semi-structured interview.The data was transcribed based on the tape and were analyzed by Giorgi analysis.Results Nursing students held positive attitude to this mode.Three themes were extracted:stimulating nursing students' learning potential,enhancing the comprehensive ability of nursing students; some students had difficulties in case selection,disease analysis and physical examination; suggesting that detailed rounds guideline should be issued to students first,and teaching rounds should be held every two weeks.Conclusions We should strengthen training of the ability of nursing assessment in pediatrics for nursing students,play the role of facilitator and advocate self-directed learning methods.

Objective To investigate the effects of almitrine-raubasine on learning-memory ability and brain choline acetyltransferase (ChAT) activity in chronic episodic hypoxia (EHYP) rat. Methods After establishing the rat model of EHYP, almitrine-raubasine (0.03 tablets/250 g body weight , Bid) was given to the EHYP rats. The learning-memory ability was evaluated by using passive avoidance test and the ChAT activity in three different brain regions (including cerebral cortex, hippocampus and striatum) was determined using radiochemical method. Results As compared with the controlled rats, the performance on passive avoidance test of EHYP rats was impaired significantly (P

The effects of ovariectomy (OVX) an d pinealectomy (PX) on apoptosis of cingulated gyrus cell in rats were investiga ted. The results suggest that OVX or PX could induce apoptosis in cingulated gyr us cells, the effect by PX is more serious than that by OVX, and combining effec t of 2 operations is more serious than either effect alone. The effects of OVX a nd PX on cell apoptosis are not related to glial cells.

OBJECTIVE To investigate the reasons and preventive measures of recurrent laryngeal nerve injury during operation in patients with benign thyroid neoplasm. METHODS The clinical data of 2243 cases with benign thyroid neoplasm were reviewed. The relations among different neoplasm regions, different procedures and injury of recurrent laryngeal nerve were analyzed. RESULTS Injury incidence of recurrent laryngeal nerve in this study was 3.0 %. In cases with nodular goiter on the dorsum of thyroid and recurrent laryngeal nerve exposed during operation, injury incidence of recurrent laryngeal nerve was 1.0 %. And there was no recurrent laryngeal nerve injury in cases with nodular goiter on other region of the thyroid. In cases used locality protection during operation, injury incidence of recurrent laryngeal nerve was 7.6 % when benign lesions on the dorsum of thyroid and was 0.17 % when benign lesions on other region of the thyroid. CONCLUSION In cases with nodular goiter or adenoma on the dorsum of thyroid, exposing recurrent laryngeal nerve is necessary during operation and in cases with benign lesions on other region of thyroid, locality protection is useful. There are three major routes for recurrent laryngeal nerve exposure.