Objective To study the cerebral energy metabolism changes of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) through hydrogen magnetic resonance spectroscopy examination (1 HMRS ) and its relationship with partial pressure of oxygen / carbon dioxide tension.Methods Totally 13 cases of AECOPD patients and 10 cases of age-matched healthy people underwent HMRS examination.The ratios of n-acetyl-aspartate(NAA)/creatine(Cr),choline (Cho)/Cr,myo-inositol(MI)/Cr of parieto-temporal and occipital areas of brain were detected.Blood gas analysis were also used to detect partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2).Results NAA / Cr of parieto-temporal and occipital areas of brain (1.32±0.12,1.48±0.12) were lower in AECOPD group than those in control group (1.45±0.11,1.58±0.10) (P＜ 0.05),MI/Cr (0.23±0.07,0.30±0.11) were also decreased compared with control group (0.40±0.14,0.46±0.12) (P＜ 0.01),while Cho/Cr of parieto -temporal and occipital areas of brain between the AECOPD group and control group showed no significant difference (P＞0.05).NAA/Cr of parieto temporal and occipital areas of brain were positively correlated with PaO2 (r=0.46 and 0.44),and MI/Cr of these areas of brain were also positively related with PaO2 (r=0.63 and 0.50),but MI / Cr of parieto tempora was negatively correlated with PaCO2 (r =- 0.472). Conclusions Cerebral metabolite changes may occur in AECOPD patients,and this has relationship with hypoxia and carbon dioxide retention.

A case of mercury-induced Baboon syndrome is reported.A 31-year-old female presented with a 2-3 day history of pruritic symmetric erythematous papules on both axillas,popliteal fossa,buttocks and groins.The patient was exposed to a broken mercury thermometer two days before the onset of the eruption.Patch testing showed that the patient was sensitive to ammoniated mercury,mercury,mercuric chloride and mercurochrome.The mercury levels in serum and full blood reached the up limit of normal value three days after the onset,and gradually decreased over time.The patient was diagnosed with Baboon syn- drome caused by mercury according to the clinical manifestation and results from laboratory studies.

Objective To evaluate the relationship between Henoch-Schonlein purpura (HSP) accompanying renal impairment and helicobater pylori(Hp) infection.Methods This study consisted of 304 patients with HSP.The patients were divided into 2 groups(group A and group B) based on Hp infection or not(91 cases in group A and 213 cases in group B).Compared with the rates of accompanying renal impairment in 2 groups.And observed the recovery from renal impairment between the patients who were turned into negative(group C)and patients still were positive after the anti-Hp therapy(group D).Numeration data were analyzed by ?2 test.Results Group A which was with Hp infected,the accompanying renal impairment ratio was 65.9%.Group B which was without Hp infected,the ratio was 35.2%.There was significant difference between 2 groups(?2=24.378 P

Objective: To discuss the application principle in tuina manipulation for lumbar intervertebral disc herniation (LIDH) in Chinese literatures published in recent 30 years. Methods: The three major Chinese databases, Wanfang Academic Journal Full-text Database (Wanfang), Chongqing VIP Database (CQVIP) and China National Knowledge Infrastructure (CNKI), were searched to collect the studies of tuina manipulations in treatment of LIDH published in recent 30 years. Clustering analysis was applied to analyze the top 20 tuina manipulations for LIDH. Results: The top 20 most frequently used manipulations for LIDH were Gun-rolling, Rou-kneading, Dian-digital pressing, oblique Ban-pulling, An-pressing, Tanbo-plucking, Bashen-pulling and extending, horizontal Tui-pushing, Na-grasping, Anrou-pressing and kneading, Dou-shaking, Yao-rocking, Ca-scrubbing, Pai-patting, post-extension Ban-pulling, Mo-rubbing, Zhen-vibrating, Nie-pinching, fist-back Ji-tapping, and dorsal Shen-extending methods. The involved manipulations can be divided into two categories by the treated body areas. One category is applied to the soft tissues, including Gun-rolling, Rou-kneading, Dian-digital pressing, An-pressing, Tanbo-plucking, horizontal Tui-pushing, Na-grasping, Anrou-pressing and kneading, Ca-scrubbing, Pai-patting, Mo-rubbing, Zhen-vibrating, Nie-pinching, and fist-back Ji-tapping methods. The other category is applied to bones and joints, including oblique Ban-pulling, Bashen-pulling and extending, Dou-shaking, Yao-rocking, post-extension Ban-pulling, and dorsal Shen-extending methods. Conclusion: Based on the treated body area, the tuina manipulations applied to treat LIDH are predominated by the ones performed on soft tissues, assisted by those on bones and joints. From the way of force exertion, the involved manipulations are majorly the swinging methods, followed by squeezing and pressing ones. The manipulations applied to bones and joints are predominated by the Ban-pulling ones, followed by the Bashen-pulling and extending ones.

Aged ; Balloon Valvuloplasty ; methods ; Coronary Artery Bypass, Off-Pump ; methods ; Coronary Artery Disease ; surgery ; Humans ; Male ; Middle Aged ; Pulmonary Valve Stenosis ; surgery

OBJECTIVE: To explore the postmortem changes of biomechanical properties of underwater corpses and value for estimating postmortem interval. METHODS: SD rats were sacrificed by cervical vertebra dislocation and stored in the water at constant temperature. The vessel wall, skin, muscle, small intestine and colon were sampled at different postmortem time points (0h, 6h, 12h, 18h, 24h, 30h, 36h, 42h, 48h, 60h, 72h, 96h, 120h, 144h, 168h, 192h). The biomechanics properties of different soft tissues including ultimate load, strain, maximum stress were measured by electronic universal material testing machine. RESULTS: Except for the vessel wall, the biomechanics properties of skin, muscle, small intestine and colon showed linear decrease gradually after death. Each tissue displayed its obvious "window period" for PMI estimation. CONCLUSION The time-sequential changes of biomechanical property parameters of soft tissue in underwater corpses are significantly correlated with PMI and it could be a simple and quantitive new technology for estimating PMI. The specific heat capacity of the heat-eliminating medium around the corpses probably is one of the physical factors to influence algor mortis, autolysis, putrefaction and biomechanics properties.
Animals ; Biomechanical Phenomena ; Cadaver ; Elastic Tissue/physiology* ; Forensic Pathology/methods* ; Intestines ; Male ; Muscles ; Postmortem Changes ; Rats ; Rats, Sprague-Dawley ; Skin ; Stress, Mechanical ; Time Factors ; Weight-Bearing

OBJECTIVETo assess the immunotoxicologic effects of genetically modified drought resistant wheat T349 with GmDREB1 gene.

METHODSA total of 250 female BALB/c mice (6-8 week-old, weight 18-22 g) were divided into five large groups (50 mice for each large group) by body weight randomly. In each large group, the mice were divided into five groups (10 mice for each group) by body weight randomly, which were set as negative control group, common wheat group, parental wheat group, genetically modified wheat group and cyclophosphamide positive control group, respectively. Mice in negative control and positive control group were fed with feedstuff AIN-93G, mice in common wheat group, non-genetically modified parental wheat group and genetically modified wheat group were fed with feedstuffs added corresponding wheat (proportion up to 76%) for 30 days, then body weight, organ coefficient of spleen and thymus, peripheral blood lymphocytes phenotyping, serum cytokine, serum immunoglobulin, antibody plaque-forming cell (PFC), serum 50% hemolytic value (HC50), mitogen-induced splenocyte proliferation, delayed-type hypersensitivity (DTH) reaction and phagocytic activities of phagocytes were detected respectively.

RESULTSAfter 30 days raise, among negative control group, common wheat group, non-genetically modified parental wheat group, genetically modified wheat group and cyclophosphamide positive control group, mice body weight were (21.0±0.3), (20.4±0.7), (21.1±1.0), (21.1±1.0), (19.4±1.0) g, respectively (F=7.47, P<0.01); organ coefficient of spleen were (0.407±0.047)%, (0.390±0.028)%, (0.402±0.042)%, (0.421±0.041)%, (0.304±0.048)%, respectively (F=12.41, P<0.01); organ coefficient of thymus were (0.234±0.032)%, (0.246±0.028)%, (0.249±0.040)%, (0.234±0.034)%, (0.185±0.039)%, respectively (F=5.58, P<0.01); the percentage of T cell in peripheral blood were (70.43±4.44)%, (68.33±5.37)%, (73.04±2.68)%, (74.42±2.86)%, (90.42±1.66)%, respectively (F=57.51, P<0.01); the percentage of B cell were (13.89±3.19)%, (15.34±4.84)%, (13.06±4.22)%, (12.93±2.36)%, (3.01±0.96)%, respectively (F=12.79, P<0.01); the percentage of Th cell were (55.87±3.80)%, (55.24±4.60)%, (57.92±3.70)%, (59.57±2.54)%, (77.37±2.31)%, respectively (F=68.58, P<0.01);the Th/Ts ratio were 4.16±0.29, 4.73±0.96, 4.19±0.78, 4.52±0.40, 6.34±0.73, respectively (F=17.57, P<0.01);the serum IgG were (1046.38±210.67), (1065.49±297.22), (1517.73±299.52), (1576.67±241.92), (1155.88±167.05) µg/ml, respectively (F=10.53, P<0.01); the serum IgM were (333.83±18.97), (327.73±27.72), (367.47±27.18), (363.42±46.14), (278.71±24.42) µg/ml, respectively (F=12.11, P<0.01); the serum IgA were (51.69±10.10), (42.40 ± 8.35), (32.11±4.22), (37.12±4.90), (41.45±8.89) µg/ml, respectively (F=8.25, P<0.01); the PFC were (29.2±14.6), (28.0±20.0), (34.8±30.9), (33.2±25.1), (4.8±5.3) per 10(6) splenocyte, respectively (F=3.33, P<0.05); the HC50 were 82.3±6.5, 79.7±4.6, 75.8±4.1, 74.9±3.6, 70.8±2.1, respectively (F=9.99, P<0.01);the LPS-induced splenocyte proliferation were 0.21±0.10, 0.21±0.14, 0.26±0.12, 0.25±0.14, 0.07±0.06, respectively (F=4.18, P<0.05).

CONCLUSIONThe genetically modified drought-resistant wheat T349 was substantially equivalent to parental wheat in the effects on immune organs and immunologic functions of mice, and it didn't show immunotoxicity.

Animals ; Cytotoxicity Tests, Immunologic ; Cytotoxicity, Immunologic ; Droughts ; Female ; Mice ; Mice, Inbred BALB C ; Plants, Genetically Modified ; immunology ; toxicity ; Triticum ; genetics ; immunology ; toxicity

OBJECTIVETo explore the impact of 36-hour sleep deprivation (SD) on the brain electrophysiological indicators of visuo-motor coupling in young soldiers.

METHODSDuring the 36-hour SD, 10 healthy young soldiers were tested on visuospatial rotation tasks by event-related potentials system before and after SD. The incubation period and amplitude of P500 as well as their error number and reaction time were measured.

RESULTSCompared with subjects in SD 0-hour,subjects in SD 36-hour had significantly increased error rate [(9.7 ± 3.9)% vs. (18.3 ± 4.5)%, P<0.05] and significantly increased reaction time [(632.5 ± 53.6) ms vs. (693.6 ± 65.7) ms, P < 0.05]. Subjects in SD 36-hour showed significantly reduced amplitudes than those in SD 0-hour [(8.7 ± 2.3) ΜV vs. (5.2 ± 1.6) ΜV, P < 0.05]. Additionally, subjects in SD 36-hour showed significantly increased P500 latencies than did those in SD 0-hour [(489.6 ± 42.6) ms vs .(530.2 ± 51.9) ms, P < 0.05]. Compared with subjects in SD 0-hour, the deficit was an absence of a mental rotation function SD 36-hour in subjects.

CONCLUSIONSThe 36-hour SD in young soldiers can harm the processing mechanism of visuo-motor coupling in a certain extent. SD can affect the fixed position ability of visual space cognition in young soldiers.

Adolescent ; Adult ; Evoked Potentials ; Feedback, Sensory ; Female ; Humans ; Male ; Military Personnel ; Reaction Time ; Sleep Deprivation ; physiopathology ; Young Adult

BACKGROUNDDegenerative lumbar scoliosis is common in older patients. Decreased bone density and the degeneration of intervertebral discs are considered to be correlated with degenerative lumbar scoliosis. A means of quantifying the relative signal intensity for degenerative disc disease has not been previously discussed. The purpose of this study was to compare bone mineral density and intervertebral disc degeneration between degenerative lumbar scoliosis and lumbar spinal stenosis patients in a nine-year retrospective study.

METHODSFrom January 2001 to August 2010, 96 patients with degenerative lumbar scoliosis were retrospectively enrolled and 96 patients with lumbar spinal stenosis were selected as controls. Cobb angle, height of the apical disc and the contiguous disc superiorly and inferiorly on convex and concave sides, the height of the convex and concave side of the apical and the contiguous vertebral body superiorly and inferiorly were measured in the scoliosis group. The height of L2/L3, L3/L4, L4/L5 discs and the height of L2/L4 vertebral body was measured in the control group. The grade of intervertebral disc degeneration was evaluated using T2WI sagittal images in both groups. The bone density of lumbar vertebrae was measured with dual-energy X-ray.

RESULTSIn scoliosis group, the intervertebral disc height on the convex side was greater than the height on the concave side (P < 0.001). The vertebral body height on the convex side was greater than the height on the concave side (P = 0.016). There was a significant difference between the scoliosis group and the control group (P = 0.003), and between T-value and the rate of osteoporosis between the two groups (both P < 0.001).

RESULTSwere verified using multiple linear regression analysis.

CONCLUSIONSDegenerative lumbar scoliosis is accompanied by height asymmetry between the intervertebral disc and vertebral body regarding the convex and concave surfaces. There is a positive correlation between the angle of scoliosis and the disc index, the degree of degeneration of the intervertebral disc, and a negative correlation between the angle of scoliosis and bone density.

Aged ; Bone Density ; physiology ; Female ; Humans ; Intervertebral Disc ; pathology ; Intervertebral Disc Degeneration ; pathology ; physiopathology ; Linear Models ; Male ; Middle Aged ; Retrospective Studies ; Scoliosis ; pathology ; Spinal Stenosis ; pathology