A study was performed to validate 3 FMDV 3ABC-I-ELISA kits developed in China for the differentiation of FMDV infected and vaccinated animals.Sets of sera from naive and vaccinated cattle as well as from cattle that had been infected were tested for antibodies against nonstructural proteins (NSPs) of FMDV by commercial diagnosis kits,Ceditest(R)FMDV-NS (Ceditest(R) kit),UBI(R) FMDV NONSTRUCTURAL PROTEIN ELISA DIRECTION INSERT (UBI(R) kit) and a FMDV 3ABC-I-ELISA kitdeveloped at the Lanzhou Veterinary Research Institute.The test parameters (sensitivity and specificity) of the three kits were determined,and the result obtained from FMD 3ABC-I-ELISA kit was compared with that obtained from two foreign kits.The results indicated that the coincidence rate between the FMDV 3ABC-I-ELISA and Ceditest(R) kits was 98.05%,and the coincidence rate between the FMDV 3ABC-I-ELISA and UBI(R) kits was 94.4%; the sensitivity of both Ceditest(R) and FMDV 3ABC-I-ELISA kit was 100%.However,the sensitivity of the UBI(R) kit was only 81.8%.With sera from naive or vaccinated non-infected animals,the specificity of all tests exceeded 90%.

Objective To evaluate the diagnostic role of multi-slice CT(MSCT)angiography for tumors of intra-abdominal testes.Methods MSCT angiography of 5 cases with seminoma of intra-abdominal testes proved by surgery and pathology was analyzed.All patients were male,and the age ranged from 33 to 59 years with the mean of 43.6 years.Results(1)The arterial-supply of tumors completely came from the testicular artery of the same side.The arteries went into tumors from the posterior side.(2)The tumors had comparatively large volume with complete or incomplete amicula.The tumor density of 3 cases was inhomogeneous.The degree of entity augmentation of 5 patients was about 14—25 HU.Conclusion MSCT angiography can reveal the tumor vessel and is essential for the diagnosis of tumors of intra-abdominal testes.

Objective To examine the clinical manifestations and pulmonary radiological features in patients with triphosgene poisoning.Methods Clinical manifestations,laboratory tests and CT scans were analyzed retrospectively in 17 patients with triphosgene poisoning.We focused on the severity,development and repair of pulmonary impairment.Results Plain film and CT scans in five mild cases demonstrated bilateral scattered pulmonary patchy shadows.Of 12 cases with moderate to severe diseases,three showed bilateral multiple pulmonary patchy shadows and nodules with confluence of part of the lesions on plain film and CT scans;bilateral lungs were involved in nine cases with imaging findings of bilateral disseminated pulmonary round or ovary nodules with different size,ill-defined and partly-confluent patchy shadows and thickening of both interlobular septum and the wall of bronchus.Of clinical interests,imaging findings were closely correlated with clinical course and laboratory results.Conclusion Radiological examinations with plain films and CT scans could reveal the severity,evolvement of pulmonary edema in patients with triphosgene poisoning,and these are of clinical benefit in the early management and prognostic evaluation of patients with triphosgene poisoning.

OBJECTIVETo compare clinical efficacy differences among electroacupuncture (EA), transcutaneous electrical nerve stimulation (TENS) therapy and acupoint massage (AM) on periarthritis of shoulder.

METHODSOne hundred and twenty cases were randomly divided into an EA group, a TENS group and an AM group, 40 cases in each one. The selection of acupoints in the three groups were all the same, which were Jianqian (Extra), Xiabai (LU 4), Jianyu (LI 15), Binao (LI 14), Jianliao (TE 14), Naohui (TE 13), Xiaohai (SI 8) and Houxi (SI 3). EA was applied in the EA group with dense-disperse wave for 30 min, TENS therapy with dense-disperse wave for 30 min in the TENS group and AM combined with mobilization manipulation of Tuina on the shoulder in the AM group. All of the treatment was given once a day, six times a week and totally 4 weeks were required. The score of visual analogue scale (VAS) and improvement of shoulder joint activities in the three groups before and after the treatment were observed.

RESULTSAfter the treatment, the VAS score and activities of shoulder joint were all improved in the three groups (all P < 0.001) and AM group had more obvious improvement than TENS group and EA group (all P < 0.05). The effective and curative rate was 61.50 (24/39) in the AM group, which was superior to 42.9% (15/35) in the EA group and 44.4% (16/36) in the TENS group (both P < 0.05). The effective and curative rate of shoulder joint activities in the AM group was 61.5% (24/39), which was superior to 48.6% (17/35) in the EA group and 44.4% (16/36) in the TENS group (both P < 0.05).

CONCLUSIONThe acupoint massage has obvious clinical efficacy on periarthritis of shoulder, which could effectively relieve the pain and improve activities of shoulder joint, and it is superior to EA and TENS therapy.

Acupuncture Points ; Adult ; Aged ; Electroacupuncture ; Female ; Humans ; Male ; Massage ; Middle Aged ; Periarthritis ; physiopathology ; therapy ; Range of Motion, Articular ; Shoulder Joint ; physiopathology ; Transcutaneous Electric Nerve Stimulation

OBJECTIVETo investigate the feasibility of in vivo magnetic resonance imaging (MRI) tracking of transplanted adipose-derived stem cells (ADSCs) labeled with superparamagnetic iron oxide (SPIO) in rat heart.

METHODSADSCs were labeled with poly-L-lysine (PLL)-SPIO complexes. Intracellular iron uptake was identified by Prussian blue stain and transmission electromicroscopy. Trypan blue staining was used to test the viability of the labeled cells. In vitro MRI of labeled cells was performed. SPIO-labeled ADSCs were transplanted into normal rat hearts and were in vivo imaged with MRI. Image findings on MRI were correlated with histological findings of the rat hearts.

RESULTSThe labeling efficacy of ADSCs with PLL-SPIO was nearly 100%. Light microscopy revealed the SPIO particles were located in the cytoplasm of the ADSCs by Prussian blue staining. Transmission electromicroscopy revealed that the SPIO particles were located in the endosomes in the cytoplasm. There was no significantly deference in viability between labeled and unlabeled groups demonstrated by Trypan blue test (P > 0.05). MRI showed signal loss in gel mixed with labeled cells as compared with the unlabeled cells group and blank group. Signal void on rat hearts were demonstrated on MRI and were well correlated with histological findings where Prussian-blue-stain positive cells presented.

CONCLUSIONMRI can be used to in vivo track the transplanted ADSCs labeled with SPIO into rat hearts and facilitate to understand the conditions of the labeled cells in the transplanted areas.

Adipocytes ; cytology ; Animals ; Cell Differentiation ; Contrast Media ; administration & dosage ; Dextrans ; administration & dosage ; Feasibility Studies ; Image Enhancement ; methods ; Magnetic Resonance Imaging ; methods ; Magnetite Nanoparticles ; administration & dosage ; Male ; Myocardium ; cytology ; pathology ; Rats ; Rats, Wistar ; Stem Cell Transplantation ; methods ; Stem Cells ; cytology

OBJECTIVETo investigate the alteration of apparent diffusion coefficient (ADC) in diffusion-weighted MR imaging (MR-DWI) of liver fibrosis and its pathological basis in rabbits.

METHODSFive rabbits in the control group and 22 with experimental liver fibrosis induced by transperitoneal injection of carbon tetrachloride (CCl4) were examined with MR-DWI. Diffusion-weighted SE EPI sequence with a relatively high b factor (b=600 s/mm2) was used to measure the ADC. The mean values of ADC were compared among the rabbits in different stages of liver fibrosis and analyzed in relation to the pathological findings.

RESULTSThe mean ADC value decreased significantly with increased severity of liver fibrosis (P<0.05). Pathologically, the amount and extension of fibrotic matrix increased, and the hepatic necroinflammation worsened with the progression of the liver fibrosis.

CONCLUSIONThe ADC value decreases with the progression of liver fibrosis possibly as the result of water diffusion limitation due to increased fibrous tissue in the liver and abnormal water diffusion within the intracellular and extracellular spaces.

Animals ; Carbon Tetrachloride ; toxicity ; Liver Cirrhosis ; chemically induced ; diagnosis ; pathology ; Magnetic Resonance Imaging ; methods ; Male ; Rabbits ; Random Allocation

Objective To explore the risk factors of cardiovascular disease in adolescents with a family history of hypertension.Methods A cross-sectional study was conducted in 3874 adolescents ages 13-18 years,with normal BP in 3724 people.Based on family history of hypertension (FH),the cohort of adolescents were dichoto- mized as postive family history (FH~+,n=1145) and negative (FH~-,n=2579).Height,weight,waist circum- ference,hip circumference,blood pressure and fasting plasma glucose(FPG),total cholesterol(TC),triglyceride (TG) and high-density lipoprotein cholesterol(HDL-C) were determined.Results FH~+ adolescents had signifi- cantly higher levels of body mass index(BMI),waist circumference,WHR,FPG,TC and LDL-C(P

Objective To delineate the relationship between body mass index(BMI),waist-to-height ratio (WHtR)and hypertension in adolescents.Methods A cross-sectional study was conducted in 3874 adolescents ages 13-18 years.They were classified into four groups according to BMI and WHtR,group A:normal BMI and WHtR

The principle of Position Transformation Mechanical Ventilation (PTMV) was introduced briefly, and the mechanical structure and the intelligent control algorithm were studied. According to the principle and function requirement of PTMV, the mechanical structure of slip pole driven rocking chair(SPDRC) was proposed, the dynamics model of SPDRC was established, and the auto disturbance rejection controller was designed. The integrated model of control system was structured by using ADAMS and MATLAB, and the model validation and simulation were implemented. The simulation results indicate that the mechanical structure is feasible and the control process of ADRC is precise and steady.
Algorithms ; Models, Biological ; Posture ; Respiration, Artificial ; methods

To investigate the function of exogenous unsaturated fatty acids in hyposmotic membrane stretch enhancement of muscarinic current (ICCh) in antral circular smooth muscle cells of guinea pig, we recorded the membrane current with the conventional whole cell patch-clamp technique. I(CCh) elicited by 50 micromol/L carbachol (CCh) at the holding potential of 20 mV under isosmotic condition was taken as control. Hyposmotic membrane stretch increased I(CCh) to 226.0+/-21.0%. When the cells were pretreated with 5 micromol/L arachidonic acid (AA), linoleic acid (LA) or oleic acid (OA), I(CCh)was inhibited to 3.8+/-0.6%, 35.2+/-0.8% and 66.6+/-0.6% respectively. Hyposmotic membrane stretch increased I(CCh) to 106.0+/-2.5%, 173.2+/-6.8% and 222.1+/-11.0% of the control respectively. Five micromol/L AA inhibited hyposmotic membrane stretch-enhanced I(CCh) by 51.2+/-3.8%, while the control I(CCh) under isosmotic condition was inhibited by 96.2+/-1.6%. The results suggest that unsaturated fatty acids inhibited I(CCh) and the inhibitory effect is more significant when the unsaturation degree is increased. However, the unsaturated fatty acids are not involved in the increase of I(CCh) induced by hyposmotic membrane stretch.
Animals ; Fatty Acids, Unsaturated ; pharmacology ; Guinea Pigs ; Membrane Potentials ; drug effects ; Myocytes, Smooth Muscle ; cytology ; physiology ; Osmotic Pressure ; Patch-Clamp Techniques ; Pyloric Antrum ; cytology ; physiology ; Receptors, Muscarinic ; physiology ; Sodium Chloride