Objective To investigate the diagnostic value of apparent diffusion coefficient in the evaluation of sinonasal masses.Methods Sixty-seven sinonasal solid masses over 1 cm in diameter confirmed by pathology were retrospectively analyzed,all patients underwent preoperative routine MRI with DWI,the ADC values were measured in ROI within the solid mass.The patients were divided into benign and malignant groups by the histopathology,according to pathological findings,the patients were further divided into the hematolymphoid tumors,the malignancy of epithelium and mesenchymal tissue,the benign tumors of epithelial and mesenchymal tissue,and vasogenic masses.ANOVA test and t test were used to compare the ADC values of different groups.The receiver operating characteristic curve (ROC) was constructed using various cut points of ADC for different parameters to confirm the diagnostic threshold value and evaluate the diagnostic efficacy.Results All lesions were solitary.There were 22 malignant tumors,of which 6 lesions were hematolymphoid tumors and 16 lesions malignancy from epithelium and mesenchymal tissue.There were 45 benign tumors,of which 22 lesions were benign tumors from epithelium and mesenchymal tissue and 23 lesions vasogenic masses.The mean ADC value of malignant and benign masses was(0.88 ± 0.26) × 10-3 mm2/s and (1.54 ± 0.41) × 10-3 mm2/s respectively.There was statistically significant differences between them (t =6.897,P ＜ 0.01).The mean ADC value was(0.63 ± 0.10) × 10-3 mm2/s in hematolymphoid tumors,(0.97 ±0.24) × 10 3 mm2/s in malignancy from epithelium and mesenchymal tissue,(1.38 ± 0.23) × 10-3 mm2/s in benign tumors from epithelium and mesenchymal tissue,(1.68 ± 0.49) × 10-3 mm2/s in vasogenic masses respectively.There was statistically significant difference among all 4 groups(F =22.788,P ＜ 0.01),and the differences between any 2 groups were still statistically significant(P ＜ 0.05).The area under the ROC calculated was 0.945.Using an ADC value of 1.08 × 10-3 mm2/s as the threshold value for differentiating malignant from benign lesions,the best result obtained had a sensitivity of 81.8％ (18/22),specificity of 97.8％ (44/45),accuracy of 92.5 ％ (62/67).Conclusion The ADC value is a valuable tool in differentiating benign from malignant masses and different kinds of masses in sinus and nasal cavity.

Objective To observe the effects of hyperbaric oxygen (HBO) on cerebral small vessel disease (CSVD) and on learning,memory and the expression of brain-derived neurotrophic factor (BDNF) and acetylcholine (Ach) in the cerebral cortex and hippocampus.Methods Sixty healthy,male Wistar rats were studied.Allograft thrombosis particles 48 to 74 μm in diameter were injected into the rats' external carotid arteries to create a CSVD model.The rats were then divided randomly into a hyperbaric oxygen group,a nimotop group and a control group.The hyperbaric oxygen group rats were given hyperbaric oxygen therapy 12 hours after the modeling.The nimotop group rats were given nimodipine by intragastric perfusion 12h after the modeling.The rats in the control group had no special intervention.At 7,14 and 28 days after the modeling,any changes in learning and memory were assessed with a Morris water maze test.Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of BDNF in the cerebral cortex and of Ach in the hippocampus at 28 days.Results At both 14 and 28 days the average escape latency of the rats in the hyperbaric oxygen group was significantly shorter than those of the nimotop and control groups.The average platform crossing time had increased significantly more than in the nimotop and control groups.At both 14 and 28 days the escape latency and platform crossing times of the nimotop group were significantly better than in the control group.Ach content and BDNF content were significantly higher in the HBO group than in the nimotop and control groups.Conclusions Hyperbaric oxygen treatment can promote BDNF release in CSVD,which is helpful to protect and repair neural mitochondria,to maintain the cortex and hippocampal neurotransmitters on a stable level,and to improve learning and memory.Its effect is better than that of nimotop.

Objective To investigate the value of high-frequency ultrasound in diagnosis of thyroid carcinoma by comparative analysis of high-frequency ultrasound and spiral CT imaging results. Methods The imaging results of patients with thyroid carcinoma proved by postoperative pathology or biopsy results were reviewed.High-frequency ultrasound and spiral CT were used to examine the 35 patients in The Tumor Hospital of Harbin Medical University between 2007 and 2009. Results Diagnosis of thyroid carcinoma by application of Highfrequency ultrasound were 27 cases, diagnosis rate was 77.1%(27/35);by spiral CT were 25 cases, diagnosis rate was 71.4% (25/35);comparison of the two methods showed no significant difference (x2= 0.3, P ＞ 0.05). Combined application of high-frequency ultrasound and spiral CT diagnosed 33 patients with thyroid carcinoma, diagnosis rate was 94.3%(33/35), which was significantly higher than that of high-frequency ultrasound alone or that of spiral CT alone(compared with high-frequency ultrasound, x2 = 4.2, P ＜ 0.05;and spiral CT, x2 = 6.4, P ＜ 0.05). Conclusion Combined application of high-frequency ultrasound and spiral CT can improve the diagnosis rate of thyroid carcinoma.

OBJECTIVETo compare the clinical efficacy difference between electroacupuncture (EA) at qijie area combined with spine balance-regulating massage and medication for posterior circulation ischemia (PCI).

METHODSOne hundred cases of PCI were randomly divided into a treatment group (50 cases) and a medication group (50 cases). The treatment group was treated with EA at Baihui (GV 20), Sishencong (EX-HN 1), Fengchi (GB 20), Shenshu (BL 23), Danzhong (CV 17), etc. in qijie area combined with spine muscle-relieving massage and comprehensive chiropractic. The medication group was treated with oral administration of nimodipine (30 mg per time, three treatments per day) and vinpocetine injection with 500 mL of glucose injection or intravenous drip of 500 mL 0.9% sodium chloride injection, once a day. Ten treatments were taken as one course in both groups, and two courses were given. The symptom score, mean resistance index (RI) of vertebral artery (VA) and basilar artery (BA), mean velocity of blood flow (Vm) and comprehensive clinical efficacy were compared before and after treatment in two groups.

RESULTSThe cured and markedly effective rate was 79.6% (39/49) in the treatment group, which was superior to 54.7% (23/42) in the medication group (P<0.05). The symptom score was both significantly improved after treatment in two groups (both P<0.05), which was more obvious in the treatment group (P<0.05). The RI of VA and BA, Vm of VA and BA were significantly improved after treatment in two groups (all P<0.05), which were more obvious in the treatment group (all P<0.05).

CONCLUSIONThe electroacupuncture combined with spine balance-regulating massage has superior effect on improving mean velocity of blood flow and resistance index of vertebral artery and basilar artery as well as symptom score to medication, and is believed to be a safe and effective treatment for posterior circulation ischemia.

Acupuncture Points ; Aged ; Blood Circulation ; Combined Modality Therapy ; Electroacupuncture ; Female ; Humans ; Ischemia ; physiopathology ; therapy ; Male ; Massage ; Middle Aged ; Treatment Outcome

Objective To examine the expression of ATP-binding cassette transporter A1(ABCA1)in eukaryotie cells and the effect of arsenic resistance after the transfection of eukaryotic expression vector containing ABCA1 gene.Methods HeLa cells were transfected with the recombinant plasmid by lipofectaonmine 2000 (recombinant plasmid group),empty plasmid and untransfected HeLa cell as the control group.The level of the mRNA was examined by real-time PCR,and the expression of ABCA1 protein wag examined by Western blot,the change of cell survival rate was examined by methyl thiazolyl tetrazolium(MTT)after exposure in a series of arsenic [0(contro1),4,8,16,32,64,128 μmol/L]for 48 hours.Results Expression level of ABCA1 mRNA in recombinant plasmid,empty plasmid and untransfeeted groups was(2.09±0.08)×10-4,(0.09±0.02)×10-4,(0.08±0.02)×10-4,there was a significant difference between the groups(F=1499.23,P<0.01).The level of ABCA1 mRNA in recombinant plasmid group was higher than empty plasmid and untransfected group(all P<0.01).Western blot showed that specific protein straps existed at 254×103 in all the three groups,with a similar size to the ABCA1 protein.The amount of the recombinant plasmid group was higher than the other two groups.MTT shows that arsenic concentration at 4,8,16,32,64,128 μmol/L,the survival rates of recombinant plasmid group was(94.8±0.9)%,(86.5 ± 2.6)%, (77.8 ± 2.0)%, (56.0 ± 2.0)%, (23.8 ± 1.7)%, (18.6 ± 0.6)%, higher than that of empty plasmid group[ (85.3 ± 1.1)%, (78.7 ± 0.6)%, (67.8 ± 2.4)%, (43.2 ± 1.5)%, (14.5 ± 1.3)%, (8.0 ± 0.4)%], the difference of survival rate had a statistical signifieance(t = 18.985,6.689,5.922,9.504,9.481,32.634, all P < 0.01). Conclusions ABCA1 protein is over expressed in HeLa cells after transfect ABCA1 gene. ABCA1 protein increases resistance of arsenic in HeLa cells.

Permeability is a key factor in the bioavailability of oral drugs. Therefore, in the early stage of drug discovery, accurate and efficient evaluation of drug permeability is essential. The parallel artificial membrane permeability assay (PAMPA) with Caco-2 cells model was used by the industry as early evaluation methods. At present, the Ussing chamber rat model is also widely used. This review summarizes the human data for the in vivo single-pass perfusion technique (Loc-I-Gut) – the gold standard, and then focuses on the basic principles, experimental operation, and efficiency of the three in vitro methods, with correlation to the effective permeability coefficient (P_eff) and fractional absorbed (Fa) in man. We provide recommendations for the use of proper permeability methods at different stages in drug discovery and development.

Abdominal Injuries ; complications ; Adenosarcoma ; etiology ; Adult ; Cicatrix ; complications ; Endometriosis ; complications ; Female ; Humans

In this study, OVA-induced asthma mice was taken as the model, and orally administered with different concentration of ethanol extracts of crude and processed Stemona tuberosa, in order to determine the cytokine level released from Th1 and Th2 in splenocytes. RT-PCR was carried out to determine the genetic expression of T-bet/GATA-3 in lung, and compare the differentiation between ethanol extracts of crude and processed S. tuberosa in therapeutic effect on asthma in mice. According to the results, compared with the crude samples, processed samples significantly increased the levels of inflammatory factor INF-gamma (P < 0.05) and decreased IL-5 (P < 0.05) in splenocytes. According to the RT-PCR results, the administration of processed samples could increase the ratio of T-bet/GATA-3 (P < 0.05). The experiment showed that ethanol extracts of both crude and processed S. tuberosa could treat asthma by regulating Th1/Th2 ratio, but processed samples showed more notable effect. This indicated that crude and processed S. tuberosa had significant pharmacological difference. Therefore, it was more rational to apply processed S. tuberosa in clinical treatment of asthma and chronic cough, which layed a foundation for further revealing the processing mechanism of S. tuberosa.
Administration, Oral ; Animals ; Asthma ; drug therapy ; immunology ; metabolism ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; GATA3 Transcription Factor ; metabolism ; Gene Expression Regulation ; drug effects ; Mice ; Mice, Inbred BALB C ; Stemonaceae ; chemistry ; T-Box Domain Proteins ; metabolism ; Th1 Cells ; drug effects ; secretion ; Th2 Cells ; drug effects ; secretion

Aged ; Female ; Histiocytoma, Malignant Fibrous ; metabolism ; pathology ; surgery ; Humans ; Immunohistochemistry ; Spleen ; chemistry ; pathology ; surgery ; Splenectomy ; Splenic Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Aim To investigate the effect of magnetic nanoparticleencapsulated epirubicin(MNPE) on inducing apoptosis of human liverHep-6 tumor cell line in vitro and provide new method for local ablation ofliver in order to improve survival period of patients and quality oflife. Methods Inductive apoptosis of nano-magnetic pharmoparticle toHep-6 tumor cell of primonary hepatic cell caner was investigated by DNAelectrophoresis, electron nicroscopy , and flow cytometry analysis. Theseitems were divided into three groups, control, drug-control, and grouptreated with magnetic nauoparticle encapsulated epirubicin. The changes ofhuman liver Hep-6 apoptosis induced by magnetic nanoparticle encapsu-lated epirubicin were observed on different time-point and with differentnanoparticle encapsulated epirubicin and control group of biaoroubixingwere divided into high-dosage and low-dosage group. And the ultimateconcentration of 10 mg/L and 100 mg/L were given respectively on hu-group was iucreased from 25% to 54% after 24 hours. The apoptosis ratein the experimental group, biaoroubixing group and control group was78%, 53% and 2% respectively after 36 hours. There was significantdifference( t = 3.05. P ＜ 0.05) between the results of each group. Theapoptosis rate and quantity of medicine presented positive relativity withtime ( r = 0.96, P ＜ 0.05 ) .Conclusion Magnetic nanopartiele encap-sulated epirubicin presents the advantages of slow degradation, release ofmagnetic nanoparticle system and better target and can induce apoptosis ofliver tumor Hep cell.