Objective To investigate the feasibility of using a new type carina type tracheal prosthesis made of complex material to replace trachea and carina defects. Methods According to biomechanics index, a new carina type tracheal prosthesis was designed and constituted with carbon fiber and silicon. 19 dogs were divided into two groups randomly: group A(n=11), the carina type tracheal prosthesis anastomosed directly to dog′s trachea and bronchus;group B(n=8), based on group A, meanwhile the diaphragm was incised and the pedicel caul was transplanted from abdominal cavity to thorax to enwrap the carina type tracheal prosthesis and anastomotic site. Results The average survival period post operation in group A and group B were (3.462?1.849)d and (6.475?1.062)d ,respectively. There was significant difference of the survival period between two groups(P

Objective The determination of skeletal maturity is an important measure for selecting sports talent. The characteristics of skeletal development of hand and wrist in Chinese children were investigated in order to compare with overseas experiences. Methods The subjects were 16035 children, aged 2～18 years. The skeletal maturity of hand and wrist of the subjects was estimated by TW3 method and was compared with that of European, European North American and Japanese children. Results In comparison with European and American children, Chinese and Japanese children showed a similar patterns of skeletal maturation. The TW3-RUS skeletal maturity of Chinese children was retarded by 0.3～0.6 year in boys at the age of 8～12 and was very close to European and American in girls at the age of 5～10. Older than 12 years of age in boys and 10 years of age in girls, the TW3-RUS skeletal maturity of Chinese children accelerated and became advanced by 1.1～1.6 years in boys, by 1.2 years in girls. As compared with European and American children, the TW3-carpal maturity delayed by 0.3～0.6 year in Chinese boys at the age of 3～10 and by 0.2～0.4 year in Chinese girls at the age of 2～5. The TW3-carpal maturation accelerated after age of 10 in boys and age of 5 in girls. The age of complete maturity in all carpals was advanced by 1.4 year in boys and girls. Conclusion As compared with European and American children in 1970s-1990s, the delay of skeletal development of hand and wrist in Chinese children was not obvious in childhood, and the extent of advanced skeletal maturity and the age of advanced complete maturity of Chinese children are more evidently.

Objective To investigate cellular and behavioral effects of adenosine A2A receptor antagonist in a rat model of levodopa-induced motor complications.Methods The hemi-parkinsonian rat model was produced by stereotaxically injecting 6-OHDA to right medial forebmin bundle(MFB).Animals were intraperitoneally treated with levodopa 50 mg/kg plus benserazide 12.5 mg/kg twice a day for 22 days levodopa + vehicle.Rotational duration was estimated.After they were sacrificed,the expression of adenosine A2A receptor was observed by immunohistochemistry and Western blot.Results CSC,reversing the shortened rotational duration induced by levodopa,prolonged the rotational duration.This effect was maintained fil the end of the treatment.The chronic levedopa treatment induced an upregulation of adenosine A2A receptor expression in the lesioned striatum (IOD,(11.55±2.75)×104).The subsequent CSC treatment decreased the adenosine A2A receptor expression to the level of control (IOD,(6.02±1.29)× 104) and PD group (IOD,(5.60±1.83)×104>,F=33.31,P<0.05).Conclusion These results suggest that adenosine A2A receptor is probably involved in the development of levodopa induced motor complications and adenosine A2A receptor antagonist could be useful in the treatment of motor comphcations in parkinsonian patients.

OBJECTIVE To investigate the effect of sodium ferulate (SF) on lipopolysaccharide (LPS)-induced preterm delivery and intra-uterine fetal death (IUFD). METHODS Pregnant Kunming mice were subcutaneously pretreated with SF (25 or 50 mg · kg-1) from gestational day (GD) 10 to GD 15 and with the single injection of LPS (150μg·kg-1, ip) on GD15.5. The incidence of preterm delivery and IUFD was observed. HE staining was used for uterine and placental histological evaluation. The levels of thiobarbituric acid reactive substances (TBARS) and reduced glutathione (GSH) as well as the activities of glutathione S-transferase (GST) and glutathione peroxidase (GSH-Px) were detected in the maternal liver, placenta, and fetal liver using commercial kits. Interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) levels in amniotic fluid were evaluated by enzyme linked immunosorbent assay. RESULTS For LPS group, the incidence of preterm was 47.8%, delivery time was (17.5 ± 1.3) d, and the pups′survival rate was only 42.6%. Compared with LPS-treated group, SF 50 mg · kg-1 group showed a lower incidence of preterm (14.3%, P<0.01), longer gestational days (18.4 ± 0.5, P<0.05), and a higher pups′survival rate (75.6%, P<0.01). SF 50 mg · kg-1 restored the LPS-induced GSH both in the maternal and fatal liver (a tendency without statistical significance), GST activity〔(163±82) kU·g-1 protein vs (95±90) kU·g-1 protein, P<0.01)〕in the placenta, TBARS content〔(2.5±0.4)μmol·g-1 protein vs (3.1±0.6)μmol·g-1 protein, P<0.01〕in the fetal liver, and TNF-αlevel〔(11±8) ng·L-1 vs (20±8) ng·L-1, P<0.01〕in the amniotic fluid. SF also attenuated LPS-induced placental congestion and neutrophil infiltra?tion in the uterus. CONCLUSION SF may protect against LPS-induced preterm delivery and IUFD, and anti-oxidation as well as anti-inflammation may contribute to these effects.

BACKGROUND:Condylar fracture can occur under direct and indirect forces, and however, its risk and correlation with the impact site are rarely reported. OBJECTIVE:To quickly establish normal mandible three-dimensional finite element model and to analyze the strain conditions of the condyle under force at different parts of the mandible. METHODS: An adolescent volunteer was examined by multilayer spiral CT scans, whose mandible was normal and oral cavity was healthy. We used the reverse engineering software Mimics and large finite element software MSC.Patran to establish the three-dimensional finite element model of the mandible and to verify the feasibility of the model in the impact test at the body of the mandible, chin, mandibular angle and condyle. RESULTS AND CONCLUSION:A rapid establishment of mandible dimensional finite element biomechanical model could reproduce the morphology of the mandible, which was able to obtain the overal visual impression of the mandibular condyle. Geometric model included 80 044 nodes and 18 441 units. The mandibular chin, one side of the body, mandibular angle and condyle were given 100 N force respectively. The maximum equivalent stress of the bone cortex appeared in condylar region. So the mandibular condylar fractures were at the greatest risk. Experimental results contribute to mechanicaly analyze the condylar fracture type and to judge the severity of fractures.

Aim: To study the synthesis and anti-inflammatory activity of p-(sulfamyl) benzylidene-linked hetero-cyclic ketone derivatives. Methods: A series of p-(sulfamyl) benzylidene-linked heterocyclic ketone derivatives were synthesized. Anti-inflammatory activity was evaluated against xylene-induced ear oedema in mice and against carrageenan-induced paw oedema in rats. Gastrointestinal side effects in the rats were also examined after continu-ous introgastric administration of these compounds once daily for 7 days. Results: Twelve compounds( LHZ-101-LHZ-112) were synthesized and their structures were confirmed by IR, ~1H NMR, MS and elemental analysis. LHZ-105, LHZ-106 and LHZ-111 exhibited marked anti-inflammatory activity in xylene-induced mice ear swelling model. LHZ-106 and LHZ-111 showed significant anti-inflammatory activity in carrageenan-induced rat paw ede-ma model. LHZ-105, LHZ-106 and LHZ-111 had less gastrointestinal side effects than diclofenac sodium and CI-1004. Conclusion: These results suggest that some of these compounds have the potential for anti-inflammatory activity with few gastrointestinal side effects.

Objective To observe the efficacy of Tongmai Acupoint Plaster combined with Alprostadil injection for treatment of lower extremity arteriosclerosis obliterans (ASO). Methods Totally 180 cases of ASO Ⅱ(intermittent claudication period) patients were randomly divided into acupoint sticking group, combination group, Western medicine group, with 60 cases in each group. All groups quit smoking, had diet control, proper exercise, control of blood sugar, stop hypolipidemic and anti-coagulation medicine. The acupoint sticking group was treated with Tongmai Acupoint Plaster, each selected with the efficacy of treatment of lower limbs paralysis acupoint 10-12, alternating dressing; dressing was changed 1 time a day, 40 day as a treatment course. Western medicine group was given Alprostadil injection 10 μg, with 10 mL of normal saline, intravenous infusion, once a day, 15 d as a treatment course, for two courses, with 10 d as interval. Combination group was treated with Tongmai Acupoint Plaster combined with Alprostadil injection, the same as the application method above. The clinical efficacy, the scores of symptoms and signs, the ankle brachial index, blood lipid, the peak value of blood flow in the tibial anterior,posterior tibial, and dorsalis pedis arteries were observed and compared between the 2 groups. Results The total effective rate was 78.33% (47/60) in the acupoint sticking group, 80.00% (48/60) in the Western medicine group, and 93.33%(56/60) in the combination group, with the combination group better than the acupoint sticking group and Western medicine group (P<0.05). There was no statistical significance between acupoint sticking group and Western medicine group (P>0.05). There was statistical significance in scores of symptoms and signs, ankle brachial index before and after treatment in the three groups (P<0.05, P<0.01); There was no statistical significance after treatment (P>0.05). There was statistical significance in blood lipids before and after treatment in acupoint sticking group and combination group (P<0.05). There was statistical significance in tibial anterior, posterior tibial, and dorsalis pedis artery peak before and after treatment in the three groups (P<0.05, P<0.01). Conclusion Tongmai Acupoint Plaster has good efficacy in the treatment of ASO, equivalent with the efficacy of Alprostadil injection, which can regulate blood lipids and improve arterial blood flow. Ther combination of them has better efficacy.

Objective:To investigate the influencing factors of goiter in school-age children aged 8 to 10 in non-high iodine areas of Shijiazhuang City.Methods:In April 2018, 9 non-high iodine counties (cities) were selected as monitoring sites in Shijiazhuang City, and capacity proportional probability sampling (PPS) method was used. Each monitoring site was divided into five sampling areas according to five orientations: east, west, south, north, and middle, one township was selected from each area, one elementary school was selected from each township, and 40 school-age children aged 8 to 10 (balanced age, half males and half females) were selected from each school as respondents. Urine samples from any one time of children and drinking water samples from their village were collected, and urinary iodine and water iodine were detected by arsenic cerium catalytic spectrophotometry; the thyroid volume of children was measured by B ultrasound method; at the same time, the height and weight of children were measured and the body mass index was calculated. The influencing factors of goiter were analyzed by logistic regression analysis.Results:A total of 1 867 urine samples of school-age children were collected, and the median urinary iodine was 190.65 μg/L, which was in the suitable level of iodine. A total of 1 046 drinking water samples were collected, water iodine ranged from 0.11 to 87.91 μg/L, and the median water iodine was 3.01 μg/L. A total of 1 867 school-age children were tested thyroid, the median thyroid volume was 3.01 ml. The medians thyroid volume of boys and girls (928 and 939 cases) were 2.90 and 3.13 ml, respectively, the difference was statistically significant between sex ( U = 2.09, P < 0.05); the medians thyroid volume of children aged 8, 9, and 10 years old (622, 629, 616 cases) were 2.47, 2.87, and 3.13 ml, respectively, the differences were statistically significant among ages ( H = 203.96, P < 0.01); the medians thyroid volume of normal, overweight and obese children (1 231, 300, 336 cases) were 2.61, 3.05 and 3.16 ml, respectively, the differences were statistically significant among body mass index ( H = 65.55, P < 0.01). The results of multifactorial logistic regression analysis showed that female and obesity were risk factors of goiter in school-age children [odds ratio ( OR) = 2.08, 2.86, 95% confidence interval ( CI): 1.05 - 4.12, 1.39 - 5.88, P < 0.05]. Conclusion:Female and obesity are risk factors of goiter in school-age children aged 8 to 10 in non-high iodine areas of Shijiazhuang City.

BackgroundThe relationship between lipids and coronary artery disease has been well established. However, this is not the case between lipids and heart failure. Ironically, high lipid levels are associated with better outcomes in heart failure, but the mechan-isms underlying the phenomenon are not fully understood. This study was performed to test the hypothesis that reduced intestinal lipid absorption due to venous congestion may lead to low lipid levels.MethodsWe collected data of clinical characteristics, echocardio-graph, and lipid profile in 442 unselected patients with congestive heart failure. Correlations between lipid levels[including total cho-lesterol(TCL), high-density lipoprotein cholesterol(HDL-C), low-density lipoprotein cholesterol(LDL-C), and triglycerides(TG)]and right ventricle end diastolic diameter (RVEDD), left ventricle end diastolic diameter (LVEDD), right atrium diameter (RA), left atrium diameter (LA), or left ventricle ejection fraction (LVEF) were analyzed using Pearson correlation and partial correlation. RVEDD, LVEDD, RA, and LA were indexed to the body surface area.ResultsThere was a significantly inverse correlation between TCL le-vels and RVEDD (r=-0.34,P<0.001) and RA (r=-0.36,P<0.001). Other lipids such as LDL-C, HDL-C, and TG had asimilar inverse correlation with RVEDD and RA. All these correlations remained unchanged after adjusting for age, gender, smoking status, physical activity levels, comorbidities, and medication use.ConclusionsLipid levels were inversely correlated to RVEDD in patients with congestive heart failure; however, because this was an observational study, further investigation is needed to verify our results as wellas identify a causal relationship, if any.

Background Hyperuricemia is frequently present in patients with heart failure. Many pathological conditions, such as tissue ischemia, renal function impairment, cardiac function impairment, metabolic syndrome, and inflammatory status, may impact uric acid (UA) metabolism. This study was to assess their potential relations to UA metabolism in heart failure. Methods We retrospectively assessed clinical characteristics, echocardiological, renal, metabolic and inflammatory variables selected on the basis of previous evidence of their involvement in cardiovascular diseases and UA metabolism in a large cohort of randomly selected adults with congestive heart failure (n = 553). By clustering of indices, those variables were explored using factor analysis. Results In factor analysis, serum uric acid (SUA) formed part of a principal cluster of renal functional variables which included serum creatinine (SCr) and blood urea nitrogen (BUN). Univariate correlation coefficients between variables of patients with congestive heart failure showed that the strongest correlations for SUA were with BUN (r = 0.48, P < 0.001) and SCr (r = 0.47, P < 0.001). Conclusions There was an inverse relationship between SUA levels and measures of renal function in patients with congestive heart failure. The strong correlation between SUA and SCr and BUN levels suggests that elevated SUA concentrations reflect an impairment of renal function in heart failure.