Objective To explore the smoking cessation intervention impact on lung with genetic polymorphism of SOD3. The aim is to further reveal the importance of smoking cessation intervention on early COPD patients. Meth-ods 60 COPD patients with smoking cessation intervention and 40 COPD patients without intervention ( the control group) were enrolled in this study. Limosis peripheral blood was taken and whole blood corpuscle genomic DNA was extracted. The genetic polymorphism of SOD3 genes was determined by ligase detection reaction and polymerase chain reaction ( LDR-PCR) and serum SOD3 concentration was measured using ELISA. Lung function between the two groups before and after intervention were detected by microspirometry. Results ①The FEV1% and the FEV1/FVC% were increased after 3 and 6 months intervention in smoking cessation group(P<0.05). But there was no significant difference ( P <0.05 ) between 3 and 6 months. ② Different SOD3 genotypes have no significant on COPD pulmonary function after intervention(P>0.05). ③The serum of SOD3 concentration of COPD intervention group and the control have no significance after intervention ( P>0.05 ) . ④ The serum of SOD3 concentration a-bout CC and CG/GG genotype in COPD intervention group have no significance after 3 and 6 months intervention ( P>0.05 ) . Conclusion Smoking cessation interventions for patients with COPD pulmonary function improves significance in short-term. But different SOD3 genotypes have no effect on lung function after intervention. Smoking cessation intervention has no effect on in serum SOD3 concentration of COPD patients, and has no relationship be-tween the expression of SOD3 genetype.

Objective To preliminarily select safe parameters for different forms of teeth by irradiating 532 nm picosecond Nd∶YAG laser on human isolated teeth with different irradiation time length and power.Methods Isolated human teeth including anterior teeth,premolars,molars were irradiated with 532 nm picosecond laser.Repeated measurements were made for each tooth by thermometer to measure the temperature of pulp chamber on different time point and power,and the temperature change (△T) was calculated.Results △T of the anterior irradiation group at 0.6 W,30 s;0.8 W,20 s and 30 s;1.0 W,10 s,20s and 30s were more than 5.6 ℃,which was the same with that of premolar group at 1.0 W,30s.△T of the molar group at 1.0 W,30 s was less than 5.6 ℃.Under certain power,the temperature of pulp chamber increased with the prolonging of irradiation time (P＜0.05).At a certain time,temperature increased with the power (P＜0.05).Conclusions It is safe to carry out operation on the parameters setting of 0.8 W,10 s and 0.6 W,20 s irradiation for anteriors teeth;0.4 W,30 s,0.8W,30 s and 1.0 W,20 s for premolar teeth,and 1 W,30 s for molar teeth.In the application of 532 nm picosecond laser,attention is required to be paid on parameter setting to control input power and irradiation time.

Objective To study the association between neonatal asphyxia and blood glucose disorder. Methods A total of 134 cases of neonatal asphyxia born in the Maternal and Child Hospital of Hubei Province between January 2013 and January 2015 were included in this study. Blood glucose levels were determined within 30 min after birth and before glucose infusion. The infants were divided into the mild asphyxia group (Apgar score 4 to 7) and severe asphyxia group (Apgar score 0 to 3) according to the Apgar score at 5 min after birth. Statistical analyses were performed using the two-sample t-test and Chi-square test. Results The incidence of asphyxia was 3.2‰(134/41 875). Hypoglycemia was the main blood glucose disorder in the mild asphyxia group [12% (13/112)], and hyperglycemia was the main blood glucose disorder in the severe asphyxia group [32%(7/22)]. The average blood glucose level was higher in the severe asphyxia group than in the mild asphyxia group [(5.8±3.4) vs (5.0±2.3) mmol/L, t=21.979, P=0.001]. In the severe asphyxia group, the incidence of hypoglycemia was higher [18% (4/22) vs 12% (13/112), χ2=7.464, P=0.006] and the average blood glucose level was lower [(1.8±0.7) vs (2.1±0.4) mmol/L, t=5.247, P=0.042],and the incidence of hyperglycemia was also higher [32% (7/22) vs 9% (10/112), χ2=11.679, P=0.001] and the blood glucose level was higher [(11.6±3.8) vs (9.3±2.0) mmol/L, t=1.106, P=0.048]. Conclusion Neonatal asphyxia can lead to blood glucose disorders. The incidence and the severity of these disorders were higher in neonates with severe asphyxia.

Objective To study the application of photodynamic therapy (PDT) for dental caries prevention using whole body luminescence fiber,and to investigate the effects of PDT on the content of Ca and P in rat molar enamel.Method The rat dental caries model was established by inoculating with S.mutans.Eighty male rats were randomly divided into five groups,including three experimental groups:17 mW (8 mW/cm2) PDT (group A),34 mW (15 mW/cm2) PDT (group B),68 mW (30 mW/cm2) PDT (group C),a positive control group:20 g/L NaF solution (group D),and a negative control group:0.9％ physiological saline (group E).The experimental groups were treated by 40 μg/mL hematoporphyrin monomethyl ether (HMME) and 650 nm diode laser irradiation.The experiments were conducted for 4 weeks.The contents of Ca and P in the molars of each group were measured by inductively coupled plasma emission spectrometry.Results The contents of Ca and P in group B,C and D after PDT were significantly higher than those in group A and E (all P＜0.05).The contents of Ca and P in group A showed no significant difference before and after PDT,while those in groups B and C showed significant increase after PDT (all P＜O.05).The increment of Ca in group A after PDT was lower than that in group D (P＜0.05),while those in group B and C were significantly higher than those in group D (all P＜0.05).There was no significant difference in the increment of Ca and P between group B and C after PDT.Conclusions In the range of the experimental parameters,the PDT promoted effect of tooth remineralization is better than 20 g/L NaF.The levels of Ca and P in the tooth enamel can be promoted by PDT treatment,and the contents of Ca and P are related to the pewer of PDT.The effect of low power PDT on the remineralization of enamel is not obvious.The contents of Ca and P in the tooth enamel are increased with laser power of PDT.When the laser power increased to a certain value,the change in contents of the two elements is not obvious.PDT can maintain the tooth remineralization microenvironment.

BACKGROUND:Tissue engineering provides new ideas and approaches for repair of cartilage defects.
OBJECTIVE:To develop a complete set of solutions for construction of tissue engineered cartilagein vitro, with chondrocytes as seed cels and cross-linked sodium hyaluronate as scaffold materials.
METHODS: New Zealand rabbit articular chondrocytes were isolated, counted, and then cultured and passaged to prepare cellsuspension. Toluidine blue staining, RT-PCR and immunocytochemistry were exerted to evaluate the cultured cels. Chondrocytes were seeded and co-cultured with cross-linked sodium hyaluronate scaffold for 21 days. Then, RNA was isolated for RT-PCR, and frozen sections were prepared for morphological observation and immunohistochemistry study.
RESULTS AND CONCLUSION:The chondrocytes could adhere to the cross-linked sodium hyaluronate scaffold and aggregate, growing between fibers or adhering to the scaffold in a monolayer manner. The transcripts of cartilage specific aggrecan gene and colagen type II alpha 1 gene and cartilage specific protein colagen type II were expressed in cel-scaffold complexes to maintain the phenotype of chondrocytes. Cel-scaffold complexes co-cultured in vitro can form cartilage extracelular matrix, by which tissue engineered cartilage is expected to be obtained.

Objective To examine the separate or combined effects of aerobic exercise and AlaGln administration on patients with type 2 diabetes mellitus(T2DM).Methods T2DM was induced in rats by feeding a high-fat diet and injecting a low dose of streptozocin.Then they were trained for 8 weeks with or without administration of alanyl glutamine(Ala-Gln).At the end of training,the content of fasting serum glucose (FBG),insulin (INS),C-peptide and glucagon like peptide-1 (GLP-1) were measured and homeostasis model assessment of insulin resistance (HOMA-IR) was calculated.Results Compared with the normal rats,significant increase was observed in the FBG concentration(P＜0.05)and HOMA-IR(P＜0.05),but significant decrease in C-peptide(P＜0.05) and GLP-1(P＜0.01) of the type 2 diabetic rats.Aerobic exercise resulted in significant decrease in the FBG and HOMA-IR levels,but significant increase in the concentration of C-peptide(P＜0.01).Ala-Gln administration reduced FBG (P＜0.05),and promoted the concentrations of serum insulin (P＜0.05),C-peptide (P＜0.01) and GLP-1(P＜0.05) significantly.The combination of aerobic exercise with Ala-Gln administration had a significant interaction on promoting serum insulin(P＜0.05),but not on decreasing FBG and HOMA-IR,or increasing C-peptide and GLP-1.Conclusion The aerobic exercise or Ala-Gln administration can significantly lower blood glucose levels by improving the impaired insulin secretion in type 2 diabetic rats,and their combination has a synergistic effect on promoting insulin secretion.

The nursing experience of one hemaphagocytic syndrome patient with skin damage complication who underwent haploidentical hematopoietic stem cell transplantation were summarized. The patients gradually appeared ulceration of elbow joint skin, perianal mucosa, and bilateral axillary skin during the phase of agranulocytopenia and immune inhibition after transplantation. The overall skin ulceration area was accounted for 13% of total body surface area. We chose different dressings, combination anti-infection with promoting wound healing for nursing and achieved great effect. The skin lesions gradually healed and the patient went to the general ward successfully.

Objectives To analyse the etiology and clinical characteristics of syncope in children. Methods The clinical data of 128 children with syncope were retrospectively analyzed. Results According to the definition of syncope and supporting test results, 20 cases of non-syncopal conditions were excluded. In 108 cases of syncope, there were 70 cases (64.81%) of neurally mediated syncope, 8 cases (7.41%) of cardiogenic syncope, and 24 cases (22.22%) of unexplained syncope. Eighty-five cases (78.71%) had incentives before the onsets. Twenty-one cases (19.44%) had the family histories of syncope. One case (0.93%) had the family history of sudden death. The neurally mediated syncope and cardiogenic syncope had the feature of recurrent attacks. The VVS were preceded by limbs weakness, pale complexion, darkness in front of eyes, hearing loss, nausea and chest pain, the POTS by palpitation, chest pain and weakness, the OH by darkness in front of eyes, pale complexion and hearing loss, and the car-diogenic syncope by precordial discomfort, pain and chest pain. Conclusions The VVS is one of the most common cause of syn-cope in children. The onsets of the various types of syncope often have incentives and are preceded by some symptoms. Most of them have the feature of recurrent attacks.

Objective To evaluate the effectiveness of bioelectrical impedance analysis(BIA) interventions on volume status in hemodialysis patient. Methods Searched The Cochrane Library, PubMed, EMbase, EBsco, Wanfang Data, China Biology Medicine, China National Knowledge Infrastructure to collect clinical trials. The retrieval time was from database to July 15, 2016. The studies were selected according to the inclusion and exclusion criteria and were critically appraised by two reviewers. Then the data of included studies were extracted. Meta-analysis was conducted by using RevMan 5.3 software and descriptive analysis. Results Ten clinical trials were included six random control trial, one controlled clinical trail, three longitudinal study, involving 2009 patients. The results of Meta-analysis showed that the effectiveness of BIA interventions on volume management could improve blood pressure (P=0.001), protect the heart function(left ventricular mass index,P=0.002), compared with the clinical evaluation method, the BIA assessment of dry weight of hemodialysis patients could reduce hospitalization rate 14%. Descriptive analysis showed that BIA intervention volume management had certain advantages for the survival benefit of patients, but the current research was still few, had not yet come to a certain conclusion. Conclusions BIA can improve the management of the volume status and dry weight of hemodialysis patients, so as to it can improve the clinical benefit and survival benefit of patients.Better methods and guidelines for assessing DW and using BIA need to be developed.We propose that experienced HD nursing staff be trained in the use of the BIA to help monitor patient over hydration and approximate dry weight in consultation with the nephrologists responsible for the care of these patients so as to obviate excessive residual over hydration between nephrology reviews.

Objective To analyze mRNA expression of silent information regulator 6 (SIRT6) gene in the blood of population with family history of longevity in Bama county of Guangxi and to explore its association with SIRT6 gene polymorphism and its protein Methods One hundred and thirty-seven people (aged 30 ~ 106, 70 males, 67 females, 6.57% Han nationality, 93.43% Zhuang and Yao nationalities) with family history of longevity (long-lived family history group), and 91 people (aged 22~89, 51 males, 40 females, all Zhuang and Yao nationalities) without family history of longevity were recruited in the study (non-long-lived family history group). Real-time fluorescence quantitative RT-PCR was used to detect mRNA expression of SIRT6 gene in two groups. Results SIRT6 mRNA expression of total and femals in long-lived family history group were higher than those in non-long-lived family history group (P<0.05). mRNA expression of GG and CG genotype of SIRT6 (rs350846) and G allele carriers in long-lived family history group were all higher than those in non-long-lived family history group and the difference was statistically significant (P<0.05). SIRT6 mRNA expression was not associated with serum SIRT6 protein in long-lived family history group (P>0.05). Conclusion The expression of mRNA in SIRT6 gene may be associated with familial aggregation of longevity in Bama County of Guangxi and high expression of mRNA of SIRT6 in G allele carriers contributes to longevity.