[Objective]To investigate the clinical application of treating soft tissue defects of the feet、ankle and lower one third of the legs with reverse saphenous neurocutaneous concomitant vessel pedicled island flap.[Method]From March 1999 to June 2003,six cases of soft tissue defects of the feet,ankle and lower one third of the legs were treated with reverse saphenous neurocutaneous concomitant vessel pedicled island flap.The size of flaps were from 12 cm?7 cm to 5 cm?3 cm,aver aging 8 cm?5 cm.[Result]Flaps of 6 cases survived all showing good quality.After 10 months to 3 years follow-up,all of the six cases were thinked very good.[Conclusion]The reversed saphenous neurocutaneous concomitant vessel pedicled island flap treating soft tissue defects of the feet,the ankle and the lower one third of legs is easy to be performed.The flap has liable blood supply and does not sacrifice the major arteries.

Objective To explore the impact of a“one-week”staged multivessel percutaneous coronary intervention (PCI) versus culprit-only PCI on deaths and major adverse cardiac events (MACE). Methods We retrospectively analyzed 447 patients with multivessel disease who experienced a ST-segment elevation myocardial infarction (STEMI) within 12 h before undergoing PCI between July 26, 2008 and Septem-ber 25, 2011. After completion of PCI in the infarct artery, 201 patients still in the hospital agreed to undergo PCI in non-infarct arteries with more than 70%stenosis for a“one-week”staged multivessel PCI. A total of 246 patients only received intervention for the culprit vessel. Follow-up ended on September 9, 2014. This study examined the differences in deaths from any cause (i.e., cardiac and noncardiac) and MACE between the two treatment groups. Results Compared to a culprit-only PCI treatment approach, the“one-week”staged multivessel PCI was strongly associated with greater benefits for 55-month all cause death [41 (16.7%) vs.13 (6.5%), P=0.004] and MACE [82 (33.3%) vs. 40 (19.9%), P=0.002] rates. In addition, there were significant differences in the number of myocardial infarctions [43 (17.5%) vs. 20 (10.0%), P=0.023], coronary-artery bypass grafting [CABG;20 (8.1%) vs. 6 (3.0%), P=0.021], and PCI [31 (12.6%) vs. 12 (6.0%), P=0.018]. Patients undergoing culprit-only PCI compared to“one-week”PCI had the same number of stent thrombosis events [7 (2.8%) vs. 3 (1.5%), P=0.522]. Conclusions Compared to a culprit-only PCI treatment approach,“one-week”staged multi-vessel PCI was a safe and effective selection for STEMI and multi-vessel PCI.

ObjectiveTo investigate the effect of anisodamine on the expression of connexin 43 (Cx43) in swine ventricular myocardium after resuscitation from cardiac arrest.Methods The experiment was conducted on healthy pigs, and they were randomly divided into three groups, namely sham group, epinephrine group (control group) and anisodamine group (experimental group, animals were resuscitated combined with injection of 0.4 mg/kg of anisodamine), with 5 pigs in each group. Model of ventricular fibrillation was reproduced by alternating current challenge, and cardiopulmonary resuscitation (CPR) was performed 8 minutes after cardiac arrest. Left ventricular myocardium was harvested at 24 hours after restoration of spontaneous circulation. The expression and distribution of Cx43 were observed by immunofluorescence, Cx43 mRNA expression was assessed with reverse transcription-polymerase chain reaction (RT-PCR), and the protein expressions of Cx43 and phosphorylation of Cx43 (p-Cx43) were analyzed by Western Blot.Results The positive expression of Cx43 in ventricular muscle was distributed uniformly, mostly at the end-to-end linkage of myocardial cells, with a few side-to-side linkage in sham group. The positive expression of Cx43 in control group was significantly weaker than that in the sham group, and the signal intensity was significantly declined (4.35±2.10 vs. 10.02±3.66,P< 0.01). The positive expression of Cx43 at the end-to-end linkage and side-to-side linkage was irregular in experimental group, and the signal intensity was obviously higher than that in the control group (7.91±2.54 vs. 4.35±2.10,P< 0.05), but it was significantly weaker than that in the sham group (7.91±2.54 vs. 10.02±3.66,P< 0.05). For control group and experimental group, the Cx43 mRNA and protein expressions were significantly lower than those of the sham group [Cx43 mRNA (A value): 0.32±0.05, 0.32±0.03 vs. 0.48±0.07; Cx43 protein (A value): 0.43±0.03, 0.50±0.07 vs. 0.65±0.04, allP< 0.01], and there were no significant differences between experimental group and control group (allP> 0.05). The p-Cx43 protein expression of control group was significantly lower than that of the sham group (A value: 0.22±0.03 vs. 0.37±0.06,P< 0.01), and it was significantly higher in the experiment group than that in the control group (A value: 0.29±0.07 vs. 0.22±0.03, P< 0.01), but there was no significant difference with the sham group (P> 0.05). No significant difference in p-Cx43/Cx43 was found among sham, control, and experiment groups (0.57±0.09, 0.51±0.05, 0.58±0.06, all P> 0.05).ConclusionAnisodamine can improve the abnormal expression of Cx43 in ventricular muscle of pigs with cardiac arrest, which may be related to the protection effect of anisodamine on cardiac conduction.

ObjectiveTo determine the expression of matrix metalloproteinase-2 (MMP-2),cysteine rich protein 61 (Cyr61) and CD25 in esophageal carcinoma and investigate their clinical significance.MethodThe expression of MMP-2, Cyr61 and CD25 in 68 cases of esophageal tumor tissues (esophageal carcinoma group ) and part-cancer( para-cancer group ) and 68 cases of reflux esophagitis (control group ) was detected by immunohistochemical method and the results were statistically analysed. ResultsThe positive expression rates of MMP-2,Cyr61 and CD25 were 82.35％(56/68), 73.53％(50/68) and 89.71％(61/68)respectively in esophageal carcinoma group,there were significant differences compared with those in paracancer group and control group(P ＜ 0.05) ; while there was no significantdifference between para-cancer group and control group (P ＞ 0.05 ). The positive expression rates of MMP-2, Cyr61 and CD25 in esophageal carcinoma group in different T stage, N stage and M stage all had statisticall differences (P ＜ 0.05),while there was no significant difference in different degree of differentiation (P ＞ 0.05 ). ConclusionMMP-2,Cyr61 and CD25 is highly expressed in esophageal carcinoma,there is some significance for understanding the occurrence, development and prognosis of esophageal carcinoma.

OBJECTIVETo study Chrysanthemum morifolium dry matter accumulation and absorption characteristics of nitrogen, phosphorus and potassium at different growth stages.

METHODThrough the field experiment and the sampling analysis, the absorbing capacity of nitrogen, phosphorus and potassium as well as the growth of plant at different growth stages in Ch. morifolium were analyzed.

RESULTThe dry matter accumulation reached 70.4% of the total accumulation within 60-150 days after transplantation. Dry matter mainly distributed in leaf within 60 days after transplantation, the distribution ratio in the stem was higher than that in leaf within 60-150 days after transplantation, the highest distribution ratio was the flower, and the second was the root within 150-210 days after transplantation. The accumulative capacity of N, P and K by Ch. morifolium was lower within 45 days after transplantation, which only accounted for 16.14%, 13.39% and 10.19% of total absorptive capacity, respectively. But it increased rapidly within 45-150 days after transplantation, which accounted for 71.86%, 63.81% and 62.94% respectively. The nitrogen accumulation was slower, while the accumulation of phosphorus and potassium was increased rapidly, within 150-210 days after transplantation. The distribution ratio of nitrogen, phosphorus and potassium was different within different organs in different growth stages. The distribution ratio of nitrogen, phosphorus and potassium was mainly distributed in stem and leaf, within 150 days after transplantation, then transferring to the flower and root, the transferring efficiency was N > P > K.

CONCLUSIONthe absorption capacity of K was the highest, followed by N and P. The N : P205 : K2O ratio was 1 : 0.88 : 1.58. Correlation analysis showed that dry matter accumulation and nitrogen, phosphorus and potassium accumulation correlated positively. For producing 1g dry matter, Ch. morifolium needed to absorb 5.198 1 mg N, 4.329 5 mg P205 and 7.138 5 mg K20 from soil and fertilizer.

Absorption ; Chrysanthemum ; growth & development ; metabolism ; Fertilizers ; analysis ; Nitrogen ; metabolism ; Phosphorus ; metabolism ; Plant Leaves ; growth & development ; metabolism ; Plant Roots ; growth & development ; metabolism ; Plant Stems ; growth & development ; metabolism ; Potassium ; metabolism

Objective To investigate the short?term functional connectivity (FC) changes of default mode network (DMN) after liver transplantation (LT) by using seed?based functional connectivity analysis of resting?state functional MRI (rs?fMRI). Methods Eighteen cirrhotic patients as transplant candidates and 20 healthy controls were included in this study. All the patients underwent rs?fMRI examination before and one month after LT. The data were analyzed using DPARSF and REST software. Seed?based functional connectivity analysis was used to isolate the DMN. The posterior cingulate cortex (PCC) was chosen as seed region for the DMN map. Maps of the DMN were compared among the groups. Values of Z reflecting the functional connectivity of 3 groups were obtained. Two?sample t?test was performed to explore the DMN difference between cirrhotic patients and controls, and we used paired t tests to examine for any differences in functional connectivity before and after LT. Pearson correlation analysis was performed to explore the relationship between the changes of functional connectivity with that of clinical indexes and neuropsychological test scores pre?and post?LT. Results Typically spatial distributions of the DMN were found in all the groups. According to paired t test, post?LT patients showed increased FC in left medial prefrontal cortex (t=3.31, P<0.05), while decreased FC in left precuneus and left lateral temporal cortex (t=-3.37,-4.53,respectively, both P<0.05). Compared to healthy controls, pre?LT patients showed decreased FC in the right precuneus, bilateral medial prefrontal cortex, bilateral inferior parietal cortex, and bilateral lateral temporal cortex(t=-4.32—3.00, all P<0.05), and post?LT patients showed decreased FC in right precuneus, left posterior cingulate cortex, bilateral inferior parietal cortex, and bilateral lateral temporal cortex(t=-4.33—2.99,all P<0.05). Pearson correlation analysis revealed positively correlation between the changes of functional connectivity in left medial prefrontal cortex with that of DST (r=0.543, P=0.02). Conclusions This study found that the DMN FC of post?LT patients still lower than that of healthy controls one month after LT. The left medial prefrontal cortex was the first brain region that showed increased FC, while the FC of some regions continued to decrease, suggesting that brain function reorganization can continue after LT. Rs?fMRI can be used to observe the DMN changes in post?LT patients.

ObjectiveTo investigate the effect and medical cost of different revascularization strategies for acute myocardial infarction (AMI) patients with multi-vessel disease (MVD).Methods A prospective randomized controlled trial (RCT) was conducted. From January 2009 to June 2012, patients with AMI and MVD undergoing primary percutaneous coronary intervention (PCI) were enrolled. They were randomly assigned to group A [staged PCI for non-infarction related artery (non-IRA) within 7-10 days after AMI] and group B (subsequent PCI for non-IRA recommended only for those with evidence of ischemia). All of patients were given optimized medical therapy according to clinical guideline, and they were followed up for 24 months at regular intervals. Major adverse cardiovascular events(MACE) including recurrence of myocardial infarction and death due to cardiac ailments were recorded. Meanwhile, re-hospitalization from cardiac causes, recurrence of angina, heart failure, and re-PCI, number of stents, total hospital stay days, and total medical expenditure were recorded.Results A total of 428 patients accomplished the 24-month follow up. All the patients underwgennt PCI for non-IRA in group A (215 patients), while 62 patients in group B (213 patients) undergone PCI for myocardial ischemia, and 51 patients received non-IRA treatment. There was no significant difference in MACE incidence between group A and group B [8.4% (18/215) vs. 10.8% (23/213),χ2= 0.727,P = 0.394]. The difference of death rate due to cardiac causes (5.1% vs. 6.6%), recurrence of myocardial infarction (4.2% vs. 6.6%), and heart failure (4.2% vs. 7.0%) were not significantly different between groups A and B (allP> 0.05). The rate of recurrence of angina (14.4 % vs. 32.9%), re-hospitalization from cardiac causes (14.4% vs. 33.8%), and re-treatment of implanting stents (12.6% vs. 29.1%) were significantly lower in group A than group B (allP< 0.01), and the rate of revascularization was significantly higher in group A than group B (10.7% vs. 5.2%,P< 0.05). The total number of stents (610 vs. 366), mean number of stents per patient (2.83±0.91 vs. 1.72±0.91,t = 12.725,P = 0.000), and total cost per patient (kRMB: 63.7±12.6 vs. 51.5±12.3,t = 10.107,P = 0.000) in group A were significantly higher than those in group B. Total hospital stay days in group A was significantly less than group B (days: 8.21±2.45 vs. 9.89±3.23, t = 6.071,P = 0.000). Because non-IRA-vascular reconstruction rate was low in group B, the rate of usingβ-blocker and anti-anginal agents during the 24-month follow up in group B was significantly higher than group A [59.2% (126/213) vs. 47.0% (101/215),χ2= 6.371,P = 0.012; 56.3% (112/213) vs. 17.6% (36/215),χ2 = 64.704,P = 0.000]. Conclusions In patients with AMI and MVD undergone emergency PCI, staged PCI within 7-10 days for non-IRA cannot decrease the incidence of myocardial infarction and death due to cardiac causes, recurrence of angina and rehospitalization for cardiac causes was diminished, and it may increase the number of stents and medical cost significantly.

Objective To observe the changes of behavior,blood cortisol level,glucocorticoid receptors (Grs) and mineralocorticoid receptors (MRs) in hippocampus area after four weeks of unpredictable chronic mild stress,and to investigate the probable role of hypothalamus-pituitary-adrenal (HPA) axis in the pathogenesis of depression in aged people.Methods Aged male Wister rats were randomly assigned to control group and model group.The model group received unpredictable mild stress,including food and water deprivation,restrain,tail clipping,forced swimming,white noise,cage titling and cage rotating for 4 weeks,while the control group was undisturbed unless routine feeding and cage changing.After 4 weeks of procedure,the behavior changes were assessed by sucrose intake test,open-field test and state evaluation,serum cortisol level was measured by chemiluminescent assay,the qualitation and quantitation of GRs and MRs in hippocampus area were evaluated by immunohistochemistry and Western blotting respectively.All data were analyzed by using t-test.Results Body weight,the grooming score,activities in openfield test,food intake and sucrose intake were decreased in model group as compared with control group after 2 weeks of chronic mild stress (all P＜0.01),suggesting the stress induced depressive-like behavior effects on aged rats.Serum cortisol level was elevated in model group as compared with control group after 4 weeks of chronic mild stress (P＜0.01).A decrease of the neurons was found in CA3 of hippocampus,but not in DG area.In CA3 area,GR positive neurons were decreased,but no significant decrease was found in MR positive neurons.Conclusions The chronic mild stress leading to depressive-like behavior effects in aged rats induces overall HPA axis dysfunction,elevation of serum cortisol level,impairment of hippocampus neurons and decrease of GR positive neurons.The HPA axis dysfunction induced by chronic mild stress may play an important role in the pathogenesis of depression.

Objective:To investigate the effect of the application of "internet +" disease management based on the AISAS model on the young and middle-aged patients after PCI therapy.Method:A total of 90 young and middle-aged patients hospitalized in cardiological department of the First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital) were enrolled between June 2018 to October 2019, and they were randomly divided into observation group and control group with 45 cases in each group. Patients in the control group received telephone follow-up while "internet +" disease management based on the AISAS model was applied in the observation group. The drug therapy compliance, acquisition of the disease knowledge, quality of life, anxiety and depression levels, return to workand incidence of cardiovascular events.Results:One year after the intervention, the drug therapy compliance score, disease-related knowledge score, quality of life score, SAS and SDS scores of the observation group were 7.55±1.21, 7.29±1.27, 701.17±74.86, 32.55± 4.31, 34.74±4.16, the scores of patients in the control group were 6.48±1.56, 6.12±1.94, 670.58±65.29, 41.72±4.33, 40.79±4.17. The difference was statistically significant ( t value was 2.066-11.203, P<0.05). The comparison between the return of the patients and the incidence of cardiovascular events in the two groups was statistically significant ( χ2 value was 5.031, 11.275, P<0.05). Conclusion:This management model can increase the knowledge of disease PCI postoperative patients, improve their quality of life, make patients return to society earlier, and promote the improvement of the quality of continuous nursing service.

Microbial metabolic engineering and synthetic biology are important disciplines of microbial technology nowadays. Microbial cells are fast growing, easy to be cultivated in large scale, clear in genetic background and convenient in genetic modification. They play an important role in many domains. Microbial cell factory means an artificial microbial metabolic system that can be used in chemical production. The construction of a microbial cell factory needs transferring of multiple genes or a whole metabolic pathway, which may cause some problems such as metabolism imbalance and accumulation of mesostates. This review focuses on the regulation strategies of different levels involving simultaneous engagement of multiple genes. Future perspectives on the development of this domain were also discussed.
Bacteria ; genetics ; Fungi ; genetics ; Gene Expression Regulation ; Gene Regulatory Networks ; genetics ; Genetic Engineering ; Industrial Microbiology ; Metabolic Engineering ; methods ; Metabolic Networks and Pathways ; genetics