Bronchopulmonary Dysplasia ; Humans

Following ageing, memory and learning attenuate apparently. Mechanisms responsible for the aging related memory and learning deficit may involve in synaptic morphology and fanction deterioration in hippocampas, changes of central neurotransmitter systems、 brain intracellular calcium ions concentration、 gene expression and neurotrophasthemic etc. The mechanisms of aging related attenuation in memory and learning is summarized.

Objective To study the effects of bone marrow mesenchymal stem cells transplantation on functional recovery of the injured rats spinal cord.Methods MSCs labeled with Brdu were transplanted into rats model of spinal cord half-transection injury.The open-field BBB scoring system was employed to evaluate behavioral changes.MSCs' survival after transplantation was identified by BrdU immunohisto chemistry.We observed the reconstruction of neuronal circuits by HRP coloration.The recovery of transduction function after spinal injury was examined by cortex somatosensory evoked potential (CSEP).Results Treated rats generally showed better functional recovery than control rats after operation.BrdU-positive cells could be found in the spinal cord injury site one week after transplantation.At two months after transplantation, HRP-positive cells could be found at rostral of the spinal cord injury site of treated rats, but not be found in control.CSEP could be evoked at treated rats from two months after transplantation,but not in controls.Conclusion MSCs may survive in the spinal cord injury site via local injection immediately after spinal cord injury, and may promote regeneration of the injured axons.

OBJECTIVE:To study the effect of the extracts of Paederia scandens (EPS) on acute gouty arthritis induced by monosodium urate in rats. METHODS: Monosodium urate crystals were used to establish gouty arthritis model in rats, with ankle joints' swelling degree at different time after modeling measured using paw volume measuring meter and gaits of rats scored at 24h after modeling. Pathological changes of articular tissues of rats were observed with HE staining and TNF-? and IL-1? levels were monitored by Radioimmunoassay. RESULTS:EPS could significantly inhibit joint swelling of rats and improve the gaits; histopathologically, EPS could abate tissue swelling of ankle joints, reduce inflammatory cell infiltration of articlar tissues and improve the pathological changes of synovial membranes. Radiommunoassay revealed that EPS could reduce levels of TNF-? and IL-1? in rats' synovial membranes. CONCLUSION:EPS have remarkable efficacy in improving symptoms of acute gouty arthritis induced by monosodium urate crystals in rats, which might be related to its inhibition on levels of IL-1? and TNF-?.

OBJECTIVE: To study the antidepressant effects of total flavone of A( TFA) on post stroke depression ( PSD) in rats. METHODS: Middle cerebral artery occlusion ( MCAO) followed by isolation feed and irritable stimuli was used to induce PSD. Behaviours of rats were detected by open- field test . The effects of TFA on the indexes of hemorheology and brain homogenate lipid peroxidation were also tested. RESULTS: TFA could increase the crossing and rearing scores in open- field test, inhibit the elevation of whole blood viscosity as well as plasma viscosity at high- middle- low shear rates, increase the erythrocyte deformation, enhance the activities of Superoxide Dismutase ( SOD) and Glutathione Peroxidase ( GSH- Px) , and reduce Malondialdehyde ( MDA) content in brain homogenate in PSD in rats. CONCLUSIONS: TFA produces an antidepressant- like effect in PSD rats. This mechanism may be in association with attenuating hemorheological parameters and decreasing lipid peroxidative damage.

Objective:To explore the value of combined detection of PCT and IL-6 in differential diagnosis SIRSin ICU patients.Methods:100 patients with ICU admitted to our hospital from 2013 to 2016 were choosen,including 61 cases with non septic SIRS and 39 cases with sepsis,and 50 healthy persons over the same period were selected as control,and they were divided into non-septic group,sepsis group and control group.The levels of serum PCT and IL-6 were detected by electrochemiluminescence assay,and took PCT of 2 g/L and IL-6 of 50 ng/L for the critical value to identify non infectious SIRS and sepsis,to evaluate the clinical diagnostic value of combined detection.Results:The maximum values of PCT and IL-6in the non-septic group respectively were 0.91 ± 0.54 μg/L and 62.77± 11.75 ng/L,in the septic group respectively were 24.49± 5.00 μg/L and 1542.69± 361.66 ng/L,in the control group respectively were 0.08± 0.06 tμg/L and 3.68± 1.11 ng/L,the maximum values of PCT and IL-6 in the non-sepsis group and the sepsis group were significantly higher than control group (P＜0.05).Compared with the non-septic group,the maximum valuesin sepsis group were significantly increased (P＜0.05).The proportions of PCT ＞ 2 g/L and IL-6 ＜ 50ng/L in the non-septic group respectively were 21.31％ and 65.57％,in the septic group respectively were 92.31％ and 87.18％,the proportions of PCT＞2 g/L,IL-6＜50 ng/L in the sepsis groupwere significantly higher chan those in the non-septic group (P＜0.05).The positive predictive values,sensitivity and specificity of PCT were higher than IL-6,the positive value,specificity of combined detection was higher than IL-6 and PCT,while the sensitivity of combined detection was higher than IL-6,P＜0.05.Conclusions:Combined detection of PCT and IL-6 is helpful for differential diagnosis of sepsis and non-septic SIRS.

Objective To compare the efficacy of insulin aspart and human soluble insulin on postprandial glucose control and blood glucose excursion in type 2 diabetic patients managed with insulin pump therapy. Methods All of 345 hospitalized type 2 diabetic patients were randomized divided into two groups. One group underwent insulin pump therapy with insulin aspart (aspart group, 173 cases),another group with human soluble insulin (humulin R group, 172 cases). Capillary glucose concentrations were measured at 9 time points,including preprandial,2 hours postprandial,bedtime (22:00),midnight(0:00) and 3:00 every day during the treatment. The change of blood glucose at each time point and the variation of postprandial blood glucose excursion was compared between the two groups. The frequency of hypoglycemia was also evaluated. Results After treatment, fasting blood glucose and post breakfast and post dinner blood glucose levels were decreased more significantly in the aspart group than those in the humulin R group. And a significantly smaller postprandial blood glucose excursion was shown in the aspart group compared with that in the humulin R group (P< 0.05). The time to achieve good glycemic control in the aspart group was (4.40 ± 2.16) d, significantly shorter than that in the humulin R group[(5.68 ± 2.29) d](P< 0.05). The incidence of hypoglycemia was significantly lower in the aspart group (P <0.05). Conclusion Insulin aspart results in better control of blood glucose and less glycemic variability compare with human soluble insulin in type 2 diabetic patients during delivery by continuous subcutaneous insulin infusion.

OBJECTIVETo investigate the application of osteotomy template manufactured via 3D printing technique in bilateral sagittal split osteotomy (BSSO).

METHODSThe patient group consisted of 32 patients (17 males and 15 females) with mandibular hypoplasia who underwent a BSSO setback (Hunsuck modification; 64 splits). The mean age at the time of surgery was 23.5 years (range 1.9-35 years). All patients were scanned using cone beam computed tomography (CBCT) to create a 3D model of the mandibular, and the osteotomy template of the inner horizontal ramus of mandible bone incision was manufactured via 3D printing technique. All splits underwent operation with or without the osteotomy template by either a young doctor (attending doctor) or a doctor with extensive orthognathic surgery experience (chief doctor). The time it took to perform the mandible bone incision of the inner horizontal ramus of each group was recorded. Postoperative CBCT scan was performed, and the lingual split scale was used to assess the effect of the operation.

RESULTSPrimary healing of incisions was observed in all patients, and no serious complications occurred. The time it took to perform the mandible bone incision of the inner horizontal ramus was significantly different in the four groups (F=30.059, P<0.05), and it was longer in the group of the attending doctor without osteotomy template than in the other three groups (P<0.05). No significant difference was observed in the other groups (P>0.05). Although all splits (n=64) were performed according to the standardized protocol, only 59.38% (38/64) of the fracture lines run according to the Hunsuck's description. By contrast, only 21.88% (14/64) run through the mandibular canal and 18.75% (12/64) was split. The database was analyzed using crosstabs and via Fisher exact test. The split pattern was influenced by the application of an osteotomy template (P<0.05).

CONCLUSIONThe application of osteotomy template manufactured via 3D printing technique in BSSO was effective, which enabled the young doctor to complete the operation faster and with good results.

ObjectiveTo evaluate the gastroprotective activity of ascaridole.MethodsThe gastroprotective effect of ascaridole was evaluated on ulcer healing in rats with acetic acid-induced chronic gastric ulcer,pylorus ligation- and Aspirininduced gastric ulcer.Ascaridole was ig administered with the dosages of 10 and 20 mg/kg once daily for 7 d.Results Ascaridole showed the significant anti-ulcer effects.In acetic acid-induced gastric ulcer rats,the ulcer areas after 10 and 20 mg/kg of ascaridole treatment were (65.1 ± 20.0) and (50.6 ± 11.0) mm2,respectively,which were significant lower (P ＜ 0.01) than that of the control group [(116.7 ± 35.8) mm2].For pylorus ligation model,ascaridole showed a gastric ulcer healing effect in a dose-dependent manner.Ascaridole at the dose of 20 mg/kg showed 50％ ulcer protection and had a significant (P ＜ 0.05) gastroprotective activity since it decreased the total acidity and pepsin activity.Compared to the control group,the two dosages of ascaridole showed the significant reduction (P ＜ 0.05) in the ulcer index on Aspirin-induced ulcer.ConclusionThis study provides evidence that ascaridole shows potential efficacy on the healing of gastric ulcers induced by acetic acid,Aspirin,and pylorus ligation.

ObjectiveToinvestigatethecharacteristicsofsinglelacunarinfarct(SLI)andipsilateral multiple lacunar infarction (MLI), and the differences of risk factors and and pathologies betw een them. Methods The clinical data of al patients w ith cerebral infarction in acute internal carotid artery territory from August 1, 2008 to December 13, 2014 w ere analyzed retrospectively. Lacunar infarctions w ere screened according to the clinical manifestations and imaging findings. The patients w ere divided into a SLI, a unilateral MLI in the same blood supply area (MLI 1) and a unilateral MLI in the different blood supply area (MLI 2) group according to the number and location of the lesions show ed on diffusion w eighted imaging. Multivariate logistic regression analysis w as used to identify potential independent risk factors. Results The incidences of ipsilateral carotid plaque (73.33%vs.48.67%; χ2 =5.801, P=0.016), ipsilateral unstable carotid plaque ( 70.0%vs.42.5%; χ2 =7.192, P= 0.007 ), and ipsilateral carotid stenosis ≥50%(16.67%vs.1.77%; χ2 =8.327, P=0.004) of the MLI 1 group w ere significantly higher than those of the SLI group; the incidence of atrial fibril ation of the MLI 2 group w as significantly higher than that of the SLI group (40.0%vs.0.88%; χ2=15.887, P<0.001); there w ere no significant differences in the remaining risk factors among each group. Multivariate logistic regression analysis showed that atrial fibrilation (odds ratio [OR] 14.452, 95% confidence interval [CI] 1.558-134.011; P=0.019) and ipsilateral carotid stenosis ≥50% (OR 11.483, 95%CI 2.202-59.891; P=0.011) w ere the independent risk factors for MLI. Conclusions MLI may have different risk factors and pathogeneses w ith SLI. Atherosclerotic lesions and embolism are the important pathogeneses of MLI, w hile SLI is not.