0.05); the levels of LL, LI, RRS in CBA group and CBA+IBT group were significantly lower than those in control group(P

We put forward an image rendering system based on pipeline framework for processing and displaying medical images. Compared to original computer graphics algorithms divided into volume rendering and surface rendering, this framework can effectively comprehend methods of computer graphics and image processing, import some new concepts such as vertex buffer, pixel buffer and texture buffer. We implement Shaded Surface Display, Maximum Intensity Projection, Digitally Reconstructed Radiography, Multi planar Reformation, Curved Planar Reformation and Interactive Virtual Endoscopy in our new developed PACS image system.
Algorithms ; Computer Systems ; Image Processing, Computer-Assisted ; methods ; Imaging, Three-Dimensional ; Medical Records Systems, Computerized ; Radiology Information Systems ; Software

The pathogenicity of a field isolate of Marek's disease virus (MDV) named GXY2 integrated with retroviral long terminal repeat (LTR) sequence from a chicken with MD tumors was evaluated. Experimental chickens were divided into group A, B, C, D and E. The later four groups were vaccinated on one-day-old with CVI988/Rispens for group B and D, with HVT for group C and E, while group A was taken as no-vaccinated control. On 8-day-old, group A, B and C were challenged with GXY2 by intra-abdominal injection, group D and E were kept as un-challenged control. All the birds were raised routinely until 82 days post-challenge (PC), died birds during the experiment and the slaughtered birds at the end of the experiment were necropsied and examined for gross lesions of MD and further confirmed by a developed polymerase chain reaction (PCR) based differential diagnosis technique for avian neoplastic diseases. The results showed that time of onset of MD death of group A, B and C were PC 25, 77 and 29 days with the incidences of visible MD visceral tumors. On PC 82 days, tumor incidences and mortalities of group A, B and C were 72%, 34.8% and 50%, 84%, 21.7% and 20%, respectively. The vaccination protection of CVI988/Rispense and HVT were 51.67% and 30.56% respectively. Among all the visceral organs, heart had the highest tumor incidences (23.5%), and then followed by liver (14.7%) and gizzard (10.3%). The weight-gain of unvaccinated birds was significantly depressed and severe dystrophy of thymus and bursa of Fabricius were also found. The results of the study demonstrated that isolate GXY2 possessed the ability of causing acute tumors and overcoming the protection of the vaccinations of either CVI988/Rispense or HVT.
Animals ; Chickens ; Mardivirus ; genetics ; pathogenicity ; Marek Disease ; pathology ; virology ; Polymerase Chain Reaction ; Retroviridae ; genetics ; Terminal Repeat Sequences ; genetics

AIM: To measure the anatomical character of nasolacrimal dust by spiral CT 3D reconstruction in children.METHODS: The length of nasolacrimal dust and the angles between nasolacrimal dust and vertical plane,horizontal plane and coronal plane in 27 children(54 eyes) and 15 adults(30 eyes) were surveyed using spiral CT 3D reconstruction. While the length of nasolacrimal dust in 7 dead children(14 eyes) body were surveyed as comparison by anatomical method. The RESULTS:were analyzed by software SPSS 13.0 statistically. RESULTS: The length of nasolacrimal dust was 10.06±0.29mm in children and 11.51±1.54mm in adults by spiral CT 3D reconstruction,as 9.95±0.31mm in dead children body by anatomical method,with significant statistical difference between that of children and adults. The angles between nasolacrimal dust and vertical plane,horizontal plane and coronal plane in children were 7.96°±1.62°,73.24°±6.75°,and 12.31°±2.03° respectively,while the corresponding angels in adults were 8.08°±0.63°,72.69°±3.85° and 12.09°±1.21°. The difference between them had no statistical meaning. CONCLUSION: The anatomical data of children nasolacrimal dust obtained from spiral CT 3D reconstruction have important guidance to the therapy of nasolacrimal dust diseases in children.

OBJECTIVETo investigate the change of nerve growth factor (NGF) mRNA in human detrusor in bladder outlet obstruction (BOO) with benign prostatic hyperplasia (BPH) and their implication.

METHODSEight cases of bladder cancer and 40 patients with BPH were included in this study. All patients were divided into three groups, a control group, an obstructive detrusor stability group and an obstructive detrusor instability group. NGF mRNA in detrusor from all patients was measured using a RT-PCR.

RESULTSThe RT-PCR study indicated that NGF mRNA was expressed in detrusor of three groups of patients. There were significant differences among the three groups (P < 0.01). The expression of NGF mRNA in the obstructive instability group was higher than that in the obstructive stability group and in the control group. The NGF mRNA level in the obstructive stability group was higher than that in the control group.

CONCLUSIONThe expression of NGF mRNA in detrusor was elevated in BOO with BPH. The elevated expression of NGF mRNA might be correlated with detrusor instability (DI) due to BOO.

Aged ; Aged, 80 and over ; Humans ; Male ; Middle Aged ; Nerve Growth Factor ; genetics ; metabolism ; Prostatic Hyperplasia ; metabolism ; RNA, Messenger ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Urinary Bladder ; metabolism ; Urinary Bladder Neck Obstruction ; metabolism ; Urodynamics ; physiology

OBJECTIVETo explore cell death and apoptosis in rat hippocampal neurons at different time points after ischemia, hypoxia and reperfusion injury and to elucidate time window characteristics in ischemia neuronal injury.

METHODSHippocampal neurons were obtained from rat embryo and were cultured in vitro. The ischemia and reperfusion of cultured rat hippocampal neurons were simulated by oxygen-glucose deprivation (OGD) and recovery. OGD at different time points (0.25 h to 3.0 h) and then the same recovery (24 h) were prepared. Annexin V-PI staining and flow cytometry examined neuron death and apoptosis at different time after injury.

RESULTSAfter OGD and recovery, both necrosis and apoptosis were observed. At different times after OGD, there were statistically significant differences in neuron necrosis rate (P < 0.05), but not in apoptosis rate (P > 0.05). At recovery, survival rate of hippocampal neurons further decreased while apoptosis rate increased. Furthermore, apoptosis rates of different time differed greatly (P < 0.05). Apoptosis rate gradually increased with significant difference among those of different time points (P < 0.05). However, 2 h after ischemia, apoptosis rate decreased markedly.

CONCLUSIONSApoptosis is an important pathway of delayed neuron death. The therapeutic time window should be within 2 h after cerebral ischemia and hypoxia.

Animals ; Apoptosis ; physiology ; Brain Ischemia ; pathology ; Cell Death ; physiology ; Cell Hypoxia ; Cells, Cultured ; Disease Models, Animal ; Female ; Fetus ; cytology ; Flow Cytometry ; Hippocampus ; pathology ; Neurons ; pathology ; Pregnancy ; Pregnancy, Animal ; Probability ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; pathology ; Sensitivity and Specificity ; Time Factors

The triterpenoids of Dichrocephala benthamii were investigated by means of silica gel, Sephadex LH-20 and semi-preparative HPLC. Nine triterpenoids were isolated from D. benthamii. By analysis of the EI-MS, NMR spectra and comparison to the data reported in literatures, the structures of these compounds were determined as β-amyrin formiate (1), β-amyrin acetate (2), β-amyrenol (3), β-amyrone (4), 3β-hydroxy-olean-11, 13 (18)-diene (5) , Δ12-oleanene (6) , friedelin (7), dammaradienyl acetate (8), epi-friedeband (9), respectively. Compounds 1-8 were isolated for the first time form this genus, compound 9 was isolated for the first time from this plant, whereas β-amyrin formiate (1) was a new natural product.
Asteraceae ; chemistry ; Triterpenes ; chemistry ; isolation & purification

Objective To investigate the effect of acupoint catgut embedding combined with Ziwu-Liuzhu theory based acupuncture on the clinical efficacy and sleep quality of depressive patients. Methods A total of 64 patients who met the inclusion criteria were randomly divided into two groups, 32 in each group. The control group was treated with routine electro-acupuncture, while the observation group was treated with acupoint catgut embedding combined with Ziwu-Liuzhu theory based acupuncture. Both groups were treated for 8 weeks. Sleep quality was assessed by Pittsburgh Sleep Quality Index (PSQI), and depression was assessed by Hamilton Depression Scale (HAMD) to evaluate the clinical efficacy. Results After treatment, the HAMD score (11.3 ± 2.4 vs. 14.5 ± 2.6, t=4.986) and PSQI index (9.6 ± 2.3 vs. 11.8 ± 2.5, t=3.307) in the observation group were significantly lower than those in the control group (P<0.01). The quality of life (12.9 ± 2.3 vs. 11.3 ± 2.5, t=2.598) and mental health score (13.5 ± 2.4 vs. 11.3 ± 2.6, t=3.413) of WHOQOL-BREF scale in the observation group were significantly higher than those in the control group (P<0.01). The total effective rate was 93.8％ (30/32) in the observation group and 75.0％ (24/32) in the control group. There were significant differences between the two groups (χ2=4.246, P=0.038). Conclusions Acupoint catgut embedding combined with Ziwu-Liuzhu theory based acupuncture can effectively improve depressive state, sleep quality and quality of life in patients with depression, and the curative effect is better than conventional electro- acupuncture treatment.

AIM To observe the effect of Yinao Jieyu Granules (Curcumae Radix,Schisandrae chinensis Fructus,Gardeniae Fructus,etc.) on rats depression induced by olfactory bulbectomy (OB).METHODS The model rats randomly divided into model group,Fluoxetine Hydrochloride Capsules group,Yinao Jieyu Granules groups (7.29,3.65 and 1.82 g crude drug/kg) went on with their corresponding intragastric administration once per day (the same volume of purified water for the model group) for 2 weeks.The weight,food intake,liquid consumption,open field test,killing test,light/dark transition test and step-down test were checked every week before and after the administration.The blood sample and brain tissue were procured within 2 hours after the final administration.The serum CRH,ACTH and CORT concentration and the content of hippocampal monoamine neurotransmitters 5-HT,DA and NE were tested by ELISA method.RESULTS Compared with the model group,rats of Yinao Jieyu Granules groups (7.29-3.65 g crude drug/kg) displayed a better sucrose consumption improvement (P ＜ 0.05);more content increase of hippocampal tissue 5-HT (P ＜ 0.05);longer duration time in the dark and on the platform before the error making (P ＜ 0.05);less horizontal and vertical movement,and more significant content decrease of the serum CRH (P ＜ 0.05).CONCLUSION Yinao Jieyu Granules can relieve the depression behaviors of OB animals,and the mechanism may associate with its efficacy on 5-HT and CRH modulation.

BACKGROUNDEndovascular therapy is a treatment option for localized occlusion of the subclavian artery. In this report the long-term experience with 59 patients is presented.

METHODSBetween June 1998 and September 2008, we used endovascular therapy to treat 61 subclavian arterial obstructive lesions in 59 patients (46 males and 13 females, 34 - 82 years of age with a mean age (61.9 + or - 11.0) years). Twenty patients (34%) had clinical symptoms due to vertebrobasilar insufficiency, 26 (44%) had disabling arm ischemia, and 13 (22%) had both symptoms. We performed all procedures under local anesthesia. The approaches were from the femoral artery (n = 47), brachial artery (n = 1, involving bilateral subclavian disease) or both (n = 11). Sixty stents were implanted. All patients were followed-up at 1, 3, 6, and 12 months post-procedure, and annually thereafter.

RESULTSWe achieved technical success in 58 (95.1%) arteries, all of which were stented. There were three technical failures; two were due to the inability to cross over an occlusion, necessitating the switch to an axillo-axillary bypass, and the third was due to shock after digital subtraction angiography and prior to stenting. Arterial stenosis pre- and post-stenting was (83.6 + or - 10.8)% and (2.5 + or - 12.5)% (P < 0.01). Clinical success was achieved in 55 of the 59 patients (93.4%). Of the four clinical failures, three were technical and the remaining patient had a stent thrombosis. Systolic blood pressure difference between the two brachial arteries was (44.7 + or - 18.5) vs. (2.2 + or - 3.9) mmHg (P < 0.01). Primary patency was 98% at 12 months, 93% at 24 months, and 82% at 5 years. Five patients were lost to follow-up by 12 months post-stenting. Significant recurrent obstruction developed in five patients with resumption of clinical symptoms. The overall survival rate was 98.2% at 12 months, 89.5% at 24 months, and 84.5% at 5 years.

CONCLUSIONSEndovascular therapy for proximal subclavian arterial obstructive lesions is effective and successful. This minimally invasive treatment may be the first choice of treatment for proximal subclavical arterial obstructive lesions.

Adult ; Aged ; Aged, 80 and over ; Arterial Occlusive Diseases ; pathology ; therapy ; Female ; Humans ; Male ; Middle Aged ; Stents ; Subclavian Artery ; pathology ; Subclavian Steal Syndrome ; pathology ; therapy ; Vertebrobasilar Insufficiency ; pathology ; therapy