Due to the limitation of length of stay, hospital costs, medical conditions, and other restrictions, the time in the hospital for rehabilitation therapy is limited for patients with stroke in the convalescent stage. They need to continue rehabilitation treatment at home after being discharged from hospital. The provision of rehabilitation for stroke patients is one of professional courses in community care. Community nurses guide for home-based rehabilitation through a variety of guidance methods plays a positive role in improving the quality of life of the patients.

Objective To explore the effects of brain derived neurotrophic factors (BDNF) on concentrations of cerebral endogenous opioid peptides(EOP)in neonatal rats subject to with hypoxic ischemic brain injury (HIBI). Methods Seven day old Sprague Dawley rats were randomly divided into a HIBI+BDNF group (group A),a HIBI group (group B) and a sham operation group (group C). Models of HIBI were established by use of permanent ligation of the left common carotid artery followed by 2.5 hours ofinhalation of 8%O 2+92%N 2, then 0.5 ?g BDNF was injected into the parietal cerebral ventricle in group A immediately. Contents of dynorphin A 1 13 like, ? endorphin like and leu enkaphalin like immunoreactivities (ir DynA 1 13 , ir ? EP and ir LEK) in cortex and hippocampus were measured at 0, 60, 120 min after administration of BDNF. Results The concentrations of ir DynA 1 13 and ir ? EP in the cortex and hippocampus in group B were increased significantly than those in group C at most time points( P

AIM To observe the effects of different interval administration of exogenous brain derived neurotrophic factor (BDNF) on hypoxic ischemic encephalopathy in neonatal rats. METHODS BDNF (0 5 ?g) was microinjected intracerebroventricularly at 0, 1 and 4 h after the hypoxic ischemic encephal opathy in 7 d neonatal Sprague Dawley rats undergone by ligation of left common carotid artery followed by a 2 5 h inhalation of humidified 8% O 2+92% N 2 at 37℃ immediately after the injury, respectively. Changes of brain edema, levels of malondialehyde (MDA) and neuronal apoptosis at the left cortex and hippocampus were investigated 24 h after the injury. RESULTS The most prominent effect of BDNF was seen in 0 h group with a marked decreases in brain edema and levels of MDA and a significantly alleviated neuronal apoptosis while it was lowered obviously when administered at 4 h after the insult. CONCLUSION BDNF exerts a prominent protective effect on hypoxic ischemic encephalopathy in neonatal rats when given as early as possible after the injury rather than later administration.

Objective To explore the possibility of polymethyl methacrylate (PMMA) bone cement as the carrier for lipophilic drugs through in vitro cytotoxicity study and molecular modeling with PMMA and 17-allylamino-17-demethoxy-geldanamycin (17-AAG) loaded PMMA bone cement.Methods The 17-AAG loaded bone cement was made by mixing method.In vitro antitumor activity with MTT assay for PMMA,17-AAG,the 24 h and 48 h released solution of 17-AAG loaded PMMA bone cement were evaluated.Through Material Studio 5.0,the interaction between 17-AAG and PMMA through the model of Amorphous Cell and energy optimization of Forcite was explored.Results The inhibition ratio of MMA for tumor cells is 9.21％±0.06％ with 50 μmol/L.The 24 h released solution of 17-AAG loaded PMMA bone cement (17-AAG∶ PMMA=1∶ 4 000) inhibits the tumor cells 66.15％±0.43％ which has a quick released influence on 17-AAG.The inhibition of 24 h released solution of 17-AAG-loaded PMMA bone cement (17-AAG∶PMMA=1 ∶ 1 000,1∶2 000) shows no significance compared with PMMA released solution (P＜0.05).The 48 h released solution of 17-AAG-PMMA (17-AAG∶ PMMA=1∶ 1 000,1∶2 000,1∶4 000) inhibits U26630.25％±4.47％,30.24％±3.42％,50.52％±5.20％,with a significant difference with PMMA.The molecular model showed that the interaction between 17-AAG and PMMA was van der Waalz bonds,which drove 17-AAG inside or on the surface of PMMA bone cement.Conclusion PMMA bone cement can be used as a carrier for lipophilic drugs.It has antitumor activity and influences the release of 17-AAG with different ratio,for example it has a sustained-released influence on 17-AAG in 17-AAG-PMMA (17-AAG∶PMMA=1 ∶ 1 000,1∶2 000).Molecular model implies that 17-AAG exists inside or on the surface the PMMA bone cement through van der Waalz bonds.

Objective To survey on satisfaction degree of preventive medicine undergraduates on tutorial system and to improve the effects of tutorial system.Methods Totally 73 students of preventive medicine,who would graduate in 2012,were asked to fill the questionnaires by themselves.Main contents of questionnaires include effects,satisfaction score,expectations and reality benefits,requirements for the tutors and problems of the tutorial system.Chi-square was used to test the differences between expectations and reality benefits and the significance level was set as P ＜ 0.05.Results More than half of the students thought that the effect of tutorial system was general while 43.8％students thought good and excellent.Percentages of satisfaction score over 50,over 80 and over 90 were 75.3％,41.1％ and 12.3％,respectively.Statistical analysis shown that the real benefits from research activities were more than expectation (P ＜ 0.001),while the real benefits from tutor's academic encouragement,job guidance and life values were lower than expectation (P =0.026,P =0.003,P =0.010).Students expected to have more opportunities with the professors in the future.However,there were 17.8％ students hardly attended the activities of tutorial system,in which lack of understanding of tutorial system was the main reason and without enough time was another reason.Conclusions Students basically satisfies with tutorial system and the satisfaction degree needs to be improved.Roles of tutorial system should be fully strengthened by the management department,tutors and students.

Objective To investigate subacute exposure of airborne particulate matter (PM) on pregnancy and fetal development in female mice. Methods Forty female and forty male ICR adult mice group (A), small (B) , middle (C) , large (D) or overdose (E) PM challenge groups (n = 8 - 11), and were administered with 30 μl of phosphate buffered solution (A) or resuspended standard PM SRM 1649a at 0.09 (B), 0.52 (C), 1.85 (D) or 69.2 (E) μg/μl, once per trid from d 0 till d 19 of pregnancy via instillation onto the base of the tongue. Fetal mice were harvested by cesarean section at the time when spontaneous delivery occurred. Body weight of the pregnant mice, gestational days, intrauterine survival and growth, hepatic and pneumonic histopathological changes of the fetal mice were investigated. Lung/body and liver/body weight ratios were calculated. Expressions of mRNA and protein of CYP1A1 in the fetal lung and CYP1 A2 in the fetal liver were assayed. Results (1) All of the pregnant mice survived pregnancy throughout the entire experiment. Body weight of the pregnant mice was not significantly different among all the groups at gestational d 1 and 7 (P ＞ 0.05), but significantly lower in group E [(41.8 ± 5.8) and (48.9 ± 8.9) g] than in group A [(45.9 ± 1.8) and (56.2 ± 4.9) g] at gestational d 14 and 18 (P ＜0.05). The gestational days were significantly decreased in group E [(19.3 ± 1.3) d] when compared with group A [(20.5 ± 0.7) d; P ＜ 0.05] and were not significantly different among groups A, B, C and D (P ＞ 0.05). Lung/body and liver/body weight ratios of the fetal mice were significantly increased in group E [(1.21 ±0.18) and (4.68 ±0.21)%] as compared with groups A, B, C and D (P＜0.05). (2)Mortality rates of the fetuses were significantly higher in group E (23.0%) than in groups A (0.8%), B (0.9%), C (1.7%) and D (3.7%) (P ＜ 0.05), but were not significantly different among groups A,B, C and D (P ＞ 0.05) despite of an increasing tendency. (3) Pathological changes in the liver and lung of the fetuses were conspicuous in group E. The fetal liver injury was histopathologically evidenced by deranged tissue structure, degenerated parenchyma of hepatic cells, and mildly stained cytoplasm. Adipose degeneration was represented by clear-boundary intracytoplasmic vacuoles in most of the liver cells, and cell pyknosis with heavily stained cytoplasm was observed in some of the liver cells. Inflammatory cell infiltration and focal necrosis were occasionally found in the hepatic tissue. The fetal lung exhibited bronchiole with narrow lumina, vascular engorgement in the submucosal layer, interstitial and alveolar edema, thickened alveolar septum, granulocyte and lymphocyte infiltrations within the pulmonary alveoli and around the bronchioles. The above pathological changes were lesser in groups C and D, and were not or least found in groups A and B. (4) Protein expressions of CYP1A1 in the fetal lung and CYP1A2 in the fetal liver were significantly increased in group E (1.20 ± 0.40 and 2.55 ± 0.89) when compared with group A (0.77 ±0.36 and 2.08 ±0.31) (P ＜ 0.05). mRNA expressions of CYP1A1 in the fetal lung were significantly increased in groups C (0.36 ±0.12), D (0.41 ±0.08) and E (0.43 ±0.11) compared with group A (0.21 ±0.10), and significantly increased in groups D and E compared with group B (0.28 ±0.10,P＜0.05). mRNA expressions of CYP1 A2 in the fetal liver were significantly increased in groups C (0.37 ±0.13), D (0.36 ±0.14) and E (0.43 ±0.16) compared with group A (0.21 ±0.03), and significantly increased in group E compared with group B (0.24± 0.11, P ＜ 0.05). Conclusions PM elicited embryotoxigenicity and resulted in adverse pregnancy outcomes in mice by intrauterine exposure of overdose PM. The expressions of cancer-related genes CYP1A1 and CYP1A2 were up-regulated in organs after the middle- and large-dose subacute exposure of PM, which may have a potential role on the future development.

Objective To investigate the risk factors and anticoagulation parameters in patients of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) combined with deep venous thrombosis (DVT). Methods All of 110 AECOPD patients were divided into two groups according to Doppler examination of lower extremities: DVT group and non-DVT group. The risk factors and anticoagulation parameters were compared. Results Twelve cases (10.9%) were in DVT group,of whom 2 cases (1.8%)had pulmonary embolism. The rate of lying in bed > 3 d, smoke, mechanical ventilation, hospital stays and the levels of PaCO2 were significantly higher in DVT group than those in non-DVT group (P < 0.01 or <0.05 ). In DVT group, the activity of antithrombin Ⅲ and the level of protein S decreased (P < 0.05 ), and the level of D-Dimer increased (P < 0.05). Conclusions Long-term bed, smoke and mechanical ventilation requirement are the main risk factors of DVT in patients with AECOPD. Respiratory failure (type Ⅱ ) is easier to combine with DVT. Abnormality of coagulation and fibrinolytic system exists in AECOPD with DVT.

BACKGROUND:Results of recent studies demonstrated the modulation of thymosin β4 on hair cycle and regeneration, but the mechanism of action remains unclear.
OBJECTIVE:To investigate the mechanism by which thymosinβ4 increases hair regeneration through Wnt signal pathway.
METHODS:After the mouse model of depilation was established using rosin/paraffin mixed agents, the experimental animals were randomly assorted to three different groups, including low-dose, high-dose and control groups, and a dose of 0.3μg/50μL, 3μg/50μL thymosinβ4 and PBS was administered on the depilated backs every 12 hours, respectively. Then photography, hematoxylin-eosin staining, immunohistochemistry and in situ hybridization were applied to observe the growth of hair, and the expressions ofβ-catenin and LEF-1 mRNA in different groups at different time were quantitatively evaluated.
RESULTS AND CONCLUSION:The hair growth of the low-dose group was faster than that of the other groups. Hematoxylin-eosin staining demonstrated inflammatory cel s infiltration in the dermis after depilation, and the number of hair fol icles that were in the phase of anagen was much more than the other groups as time went by. Immunohistochemistry ofβ-catenin showed the accumulation of intra-cel ularβ-catenin in the low-dose group at the bulge of fol icles assessed by integrated absorbance analysis (P<0.05), so did the in situ hybridization of LEF-1 mRNA. Low-dose thymosinβ4 accelerates hair growth through Wnt signal pathway by elevating the level ofβ-catenin and LEF-1 mRNA.

Objective To investigate the relationship between maternal exposure to airborne inhalable particulate matters (PM10) in the first trimester of pregnancy and the risk of fetal congenital deformity.Methods Relationship between exposure to airborne PM10 during the 1st,2nd,3rd and 1-3 months of gestation and the risk of fetal anomalies in 203 pregnant women with deformed fetuses,which paralleled to normal pregnant women with discrepancy of conception date ＜30 days (control),were retrospectively analyzed by a case-control study from May 14,2007 to April 30,2012 in Fujian Medical University and Fuzhou General Hospital.Multivariate Logistic regression adjusted for potential confounders including maternal age,gravidity and parity was performed for data analysis.Results According to the inclusion and exclusion criteria,178 pregnant women with deformed fetuses and 356 controlled cases were enrolled.The average levels of PM10 exposed in pregnant women Withfetal cardiovascular anomalies during 1-3 months of gestation were significantly higher than in the controls [(73.80±11.55) μg/m3 vs (70.49±10.83) μg/m3] (t=2.066,P=0.040),but PM10 exposure in the 1st,2nd and the 3rd month of pregnancy were comparable between the observed and control groups [(74.00±17.34) μg/m3 vs (71.70±15.39) μg/m3,t=0.992,P=0.322;(75.15±16.80) μg/m3 vs (71.38±15.66) μg/m3,t=1.625,P=0.106; (70.28±15.84) μg/m3 vs (69.41± 15.84) μg/m3,t=0.383,P=0.702].There were no significant differences of PM10 exposure levels when compared between facial-cervical anomalies,neurologic anomalies and total anomalies and their corresponding controls (P＞0.05).Each increased quartile of the PM10 exposure levels was associated with an elevated risk of fetal cardiovascular anomalies by 1.218 folds (OR =2.218,95 ％ CI:1.232-3.994,P=0.008).Paired multivariate Logistic regression analysis revealed,a positive correlation between PM10 levels at 1-3 months of gestation and fetal cardiovascular anomalies (OR =1.106,95％CI:1.035-1.183,P =0.003).Conclusions Maternal exposure to PM10 in the first trimester of pregnancy possibly exerts negative effects on fetal cardiovascular anomalies.

Objective To study the radiosensitivity enhancement effects of recombinant adenovirus mediated retinoblastoma 94 gene on the growth of esophageal carcinoma cells EC109.Methods EC109cells was transfected with recombinant Rb94 gene adenovirus and irradiated by 137Cs γ-rays.The cohorts were divided into groups as blank control,Ad-LacZ,Ad-Rb94,radiation and Ad-Rb94 combined with radiation.Cell inhibition ratio,cell cycle and expression of retinoblastoma protein of EC109 cells were analyzed.Results The growth of EC109 cells transfected with Ad-Rb94,radiation and Ad-Rb94 combined with radiation group was all inhibited.The group of Ad-Rb94 combined with radiation resulted in greater inhibition of cells growth compared with Ad-Rb94 group and radiation group ( F =23.31,P ＜0.05 ).Cells of G2 phases of EC109 cancinoma cells for Ad-Rb94 combined with radiation group were the highest,which was 50％.The combination of Ad-Rb94 and radiation group resulted in the greatest expression of retinoblastoma protein,which reached 71％,significantly higher than Ad-Rb94 infection and radiation groups ( x2 =8.31,6.73,P ＜ 0.05 ).Conclusions Retinoblastoma 94 gene combined with ionizing radiation can enhance the radiation sensitivity of EC109 cells.