Humans ; Thyroid Neoplasms

OBJECTIVE：To establish the method for content determination of 17 kinds of amino acids in Sargassum and its adulterants，and to carry out cluster analysis ，so as to provide reference for quality control of Sargassum. METHODS ：Totally of 18 batches of sample （S1-S6 as certified product ，S7-S18 as adulterants ）were collected. After acid hydrolysis ，amino acids contents were detected by using automatic amino acid analyzer. The separation was performed on LCAK 06/Na sulfonic acid cation exchange resin column with mobile phase consisted of buffer-regeneration system （gradient elution ）at the flow rate of 0.45 mL/min （elution pump ）and 0.25 mL/min（derivative pump ）. The detection wavelengths were set at 440 nm（proline）and 570 nm（other amino acids ），and the sample size volume was 50 μL. PASW Statistics 18.0 software was used ，and cluster analysis was conducted by using group connection method of cluster analysis with “square Euclidean distance ”as the measurement standard. RESULTS ：17 kinds of amino acids were well separated without interference from blank sample. The linear relationship between mass concentration and peak area was good （all r were over 0.998），and the upper and lower limits of the linear range were 48.06 μg/L （cystine）and 1.501 μg/L（glycine），respectively；RSDs of precision ，reproducibility and stability tests were lower than 2％. The average recoveries were between 90.60％-101.56％（RSDs were 0.88％-2.15％，n＝6）. 17 kinds of amino acids were detected in Sargassum and its adulterants ，among which the contents of glutamic acid ，aspartic acid ，leucine，alanine，glycine and valine were relatively high . Results of cluster analysis showed that 18 batches of sample were clustered into 4 categories，i.e. S 1-S6 into one category；S7-S9 into one category ；S10-S12，S16-S18 into one category ；S13-S15 into one category ；which was consistent with the identification result of Sargassum and its adulterants . CONCLUSIONS ：The method is simple ， rapid， accurate and reproducible，and can be used for the quantitative analysis and identification of amino acids in Sargassum and adulterants.

OBJECTIVE: The brain TXA(2) and PGI(2) levels in a new rodent model of impact acceleration diffuse brain injury alone and with hypotention and hyperthermia in combination were observed to look into the relationship between TXA(2), PGI(2) levels and different types of head injury. METHODS: Thirty-two SD rats were randomized into sham, head injury alone, secondary insult alone and head injury with secondary insult groups. At 4 hours after injury or experiment, all the rats were decapitated and their brains were sampled for radioimmunoassay (RIA) measurement. RESULTS: Compared with that of sham group there were no changes in TXA(2) and PGI(2) levels in injury alone group while there was a significant augmentation in PGI(2) level in insult alone group. Both TXA(2) and PGI(2) level in injury with secondary insult group increased significantly in comparison with that of sham at 4 hours postimpact. CONCLUSIONS: PGI(2) providing energy and precursors to the injured tissue and producing some vasoactive arachidonic products, especially TXA(2), is closely connected to the severity of brain damage.

OBJECTIVE: To study the changes of brain TXA(2) and PGI(2) levels in a new rodent model of impact acceleration diffuse brain injury with hypotention and hypoxia and the effect of diaspirin cross linked hemoglobin solution (DCLHb) on brain TXA(2) and PGI(2) levels. METHODS: Thirty-two male SD rats were randomized into sham, head injury alone, head injury with secondary insults and injury with insults followed by DCLHb administration groups. Animals were physiologically monitored throughout the experiment and the prostanoids were measured via radioimmunoassay (RIA). RESULTS: There were no changes in TXB(2) and 6-keto-PGF1alpha (stable metabolites of TXA(2) and PGI(2)) levels in injury alone group while TXB(2) level in secondary insults group elevated significantly and both TXB(2) and 6-keto-PGF1alpha levels in injury with insults followed by DCLHb administration augmented significantly in comparison with the corresponding value of sham at 4 h postimpact. CONCLUSIONS: The only increase in TXA(2) level in secondary insults rats suggests that there may be both thrombotic episodes and vasoconstriction leading to focal increase in micro-circulatory resistance which contributes to a decreased focal cerebral blood flow (CBF). And it is hypothesed that DCLHb may exert its protective properties through increasing PGI(2) production in injured brain by affecting CBF and cerebral perfusion pressure (CPP).

Objective: To study the relations between neck/shoulder or low back pain and their daily behavioral habits among middle school students in Shenzhen. Methods: We randomly chose 3 952 students from 10 high schools in Shenzhen to complete the questionnaires. Data was gathered and analyzed, using the IBM SPSS 23.0. Results: Of the 3 952 participants, 20.3% had neck/shoulder pain and 15.2% had low back pain. Among students experienced neck/shoulder pain, female (25.3%), high school (24.5%) and boarding students (24.4%) experienced higher rates of neck/shoulder pain (P<0.05). Female students (17.9%) also had higher rate of low back pain (P<0.05). Results from logistic regression analysis showed that factors as: gender, type of school, taking naps on the desk, staying up late, self-perceived stress from learning, overloading homework, time spent on mobile phone and TV, spending long time on computer etc. were related to the neck/shoulder pain (P<0.05). Factors as: gender, naps on the desk, stay up late, self-perceived stress, overloading homework, time spent on mobile phone and TV etc., were related to low back pain (P<0.05). Conclusion: Neck/shoulder pain and low back pain were both commonly seen while high self-perceived stress, sedentary behaviors and poor sleeping habits were associated with both neck/shoulder and low back pain in high school students in Shenzhen.
Female ; Habits ; Humans ; Low Back Pain ; Neck Pain ; Risk Factors ; Schools ; Shoulder ; Shoulder Pain ; Sleep ; Students ; Surveys and Questionnaires

In this article, 2 IHE integration profiles-RID integration profile and XDS integration profile, which are adopted widely in the applications of healthcare information exchange, are introduced and compared with each other in applicable occasions. In addition, their current developing status and prospects are give from the technical view.
Informatics ; instrumentation ; methods ; Systems Integration

This paper briefly introduces the history, definitions of some important words, working process, key concepts, connectathon testing, implementation of IHE, which can be regarded as an entry guide of IHE.
Informatics ; instrumentation ; methods ; Systems Integration

To evaluate lesion detection of MRI in knee joint osteoarthritis in patients with symptoms of pain, the correlation between MRI findings and varying degrees of reported pain was assessed. Twenty-eight patients (31 knees) with osteoarthritis were recruited for this study. The degree of knee pain was assessed by VRS scores. The knees were evaluated by plain film radiograph utilizing Kellgren-Lawrence scores. Multiple MR sequences were performed on a 1.5T MR-system, including sagittal and coronal dual fast spin echo (TR/TE 3660/11/120 ms, slice thickness 5 mm), coronal spin echo T1-weighted (TR/TE 360/9 ms, slice thickness 5 mm), sagittal fat saturated 3D-spoiled gradient-recalled echo (TR/TE 50/6 ms; slice thickness 1.5 mm; flip angle 40 degrees ), and 3D steady-state free precession (TR/TE 6/2.2 ms; slice thickness 1.6 mm; flip angle 30 degrees ) pulse sequences for the purpose of detecting abnormities of cartilage, menisci, the anterior cruciate ligaments, bone marrow edema-like lesions, osteophytes, synovitis, and joint effusions. MR findings were compared with the degree of pain using Fisher exact test with P values less than 0.05 indicating a statistically significant difference. The results showed that, of the 31 knees evaluated, mild pain was reported in 11 and severe pain in the remainder. Kellgren-Lawrence scores of all 31 evaluated OA knees were as follows: grade 1 lesions (n=6), grade 2 lesions (n=14), grade 3 lesions (n=8), and grade 4 lesions (n=3). Articular cartilaginous defects were found in 37.1% of knees. Abnormalities of the menisci and anterior cruciate ligaments, bone marrow edema-like lesions, osteophytes, synovitis, and joint effusions were detected in 32.3%, 38.7%, 45.2%, 100%, 15.1% and 67.7% of knees, respectively. Of these variables, only the differences in prevalence of joint effusions were significantly different in the mild and severe pain groups (P=0.004). It is concluded that MRI evaluates the entire joint structure of the osteoarthritic knee, demonstrating abnormalities of the cartilage, menisci, and anterior cruciate ligaments as well as bone marrow edema-like lesions, osteophytes, synovitis, and joint effusions. The difference in pain grading between OA patients reporting mild and severe degrees of pain is related to the presence of joint effusion.

Objective: To study the organic acids in the leaves of Cerbera manghas. Methods: The constituents were isolated by repeated column chromatography and their structures were elucidated on basis of physico-chemical constants and spectral data analyses. Results: Seven compounds were obtained and determined to be m-carboxyphenylacetic acid (1), p-hydroxybenzoic acid (2), protocatechuic acid (3), p-hydroxycin-namic acid (4), isophthalic acid (5), vanillic acid (6), and succinic acid (7). Conclusion: Compound 1 is a new natural product, compounds 2-6 are obtained from the plants of Cerbera L. for the first time.

Objective To study the analgesic, activating blood and resolving stasis effect of Ento-II plastic. Methods Hot plate procedure and torsion body method were used as analgesic experimental model to observe the analgesic effect of Ento-II plastic. The acute blood stasis rats experimental model was established through rat subcutaneous injection of high-dose adrenaline hydrochloride and soaked in ice water. Then, the blood stasis focal cerebral ischemia-reperfusion models were established by suture method on the rats. The hemorrheologic indicators were determined. Results Compared with control group, Ento-II plastic could significantly prolong pain thresholds in mice at 30, 60, and 90 min after final administration (P < 0.01). Ento-II plastics 20, 10, and 5 mg/kg dose groups could reduce aceticacid-induced mice writhing times and prolong the incubation period (P < 0.01). The experimental result of rats blood stasis focal cerebral ischemia-reperfusion at 24 h after reperfusion showed that Ento-II plastics 6.67, 3.33, and 1.67 mg/kg dose groups could obviously reduce the neurological function score and whole blood viscosity (P < 0.01). 3.33 mg/kg dose group could significantly reduce plasma viscosity, erythrocyte aggregation index, and casson viscosity (P < 0.05). The effect were similar to that of ligustrazine. 6.67 and 3.33 mg/kg dose groups could significantly reduce casson viscosity (P < 0.01). Conclusion Ento-II plastic has obvious analgesic effect and activating blood and resolving stasis effect.