microRNAs (miRNAs) are an extensive class of -22-nucleotide (nt) endogenous noncoding RNAs regulating life activities ofmetazoans through binding to 3'-untranslated regions (3'-UTRs) of their target genes. This work aimed to identify yan gene in the silkworm, reveal its expression profile and confirm if it is one target of bmo-miR-7 and, as such, have potential for contributing to better understanding of the molecular mechanisms involved in the metamorphosis of silkworm. Based on homolog searching and PCR amplification, we cloned the coding sequence (CDS) of Bmyan, which encodes 476 amino acid residues and contains SAM-PNT and ETs domains. Quantitative PCR (q-PCR), RT-PCR and microarray data revealed high expression of Bmyan in the head, body wall and ovary of day-3 fifth instar larval silkworm, low or no expression in other tissues. It was lowly expressed in the early larval stages, but highly expressed from late spinning to day 4 pupa. The 3'-UTR of Bmyan was obtained by rapid-amplification of cDNA ends (3'RACE) and predicted to contain two potential recognition sites of bmo-miR-7. The luciferase reporter vector containing the 3'-UTR of Bmyan was constructed and co-transfected into BmE cell line with the mimic of bmo-miR-7 and the decreased relative activity of luciferase showed that Bmyan is one target of bmo-miR-7. This work helps further functional analysis of bmo-miR-7 and Bmyan in the silkworm.
3' Untranslated Regions ; Animals ; Bombyx ; genetics ; Cell Line ; Cloning, Molecular ; Female ; Genetic Vectors ; Insect Proteins ; genetics ; Larva ; Metamorphosis, Biological ; MicroRNAs ; genetics ; Pupa

Objective To evaluate the clinical and coronary angiographic features of non-Q wave and Q wave myocardial infarction in the elderly. Methods The clinical history(including hypertension and diabetes), complication and in-hospital mortality, blood lipid, serum CK-Mb, LVEF, and the record of the coronary stenosis by angiography 3-4 weeks after infarction were investigated in non-Q wave and Q wave myocardial infarction patients. Results The clinical history and blood lipid did not differ significantly between the NQMI and QMI patients. NQMI patients had a significantly lower maximal peak 〔(68.7?18.6) mmol/L vs (108.6?17.3)mmol/L, P0.05), but occlusion rate of infarct-related vessels in NQMI patients were lower. Conclusions Prognosis of NQMI patients is better than that of QMI patients in acute-phase, and the occlusion rate of infarct-related vessels in NQMI patients were lower.

Objective: To investigate the safety and efficacy of CARTO3 fast anatomical mapping during radiofrequency ablation in patients with paroxysmal atrial ifbrillation (PAF). Methods: A total of 120 PAF patients treated in our hospital from 2013-01 to 2015-07 were enrolled. All patients received CARTO3 system for mapping and they were randomly divided into 2 groups: Control group, the patients had selective pulmonary vein angiography, followed by conventional point by point method to reconstruct left atrial model for guiding the ablation of PFA and Treatment group, the patients had selective pulmonary vein angiography followed by fast anatomical mapping to build left atrial model for guiding the ablation of PFA; the rest operational steps such as trans-septal and circumferential pulmonary vein ablation were the same.n=60 in each group. The times of operation, X-ray exposure and the rates of success, complication occurrence were compared between 2 groups. Results: All patients were successfully completed radiofrequency ablation for PAF. Compared with Control group, Treatment group had increased modeling time (8.5 ± 3.6) min vs (5.2 ± 2.3) min, while decreased pulmonary vein ostium determing time (12.0 ± 5.6) min vs (25.0 ± 8.4) min, circumferential pulmonary vein ablation time (95.0 ± 22.0) min vs (115.0 ± 25.0) min and X-ray exposure time (15.0 ± 6.3) min vs (24.0 ±5.5) min, allP<0.05. The rates of success and complication occurrence were similar between 2 groups, P>0.05. Conclusion: CARTO3 fast anatomical mapping is safe and effective for guiding radiofrequency ablation in PAF patients, it may decrease the X-ray exposure time and operation time which were important for treating the relevant patients.

Objective: To compare the value of two 3D imaging reconstruction methods for left atria and pulmonary vein on guiding the catheter ablation for atrial fibrillation (AF). Methods: From January 2014 to January 2017, a total of 100 drug refractory paroxysmal AF patients were divided into left atria direct angiography group (n=50), and indirect angiography group (n=50). 3D CARTO system was applied for mapping and guiding the ablation procedure. Patients assigned to direct angiography group were treated as follows: intraoperative puncture of atrial septum, inject contrast agent directly into the left atrium, conduct left atrial and pulmonary venous rotation angiography, reconstruct three-dimensional image, integrate the image into real-time X-ray system to facilitate circumferential pulmonary vein isolation. Patients assigned into the indirect angiography group were treated as follows: inject contrast agent through the right ventricle, conduct delayed rotation angiography of the left atria and pulmonary vein to guide circumferential pulmonary vein fixation and ablation. The left atrial and pulmonary venous image acquisition, the operation and X-ray exposure time, the success rate and the incidence of complication of the two groups were compared. The patients were followed up for 3-6 months. Results: General clinical characteristics of the two groups were similar(all P>0.05). Ablation was successful in all 100 patients. The operation time[(112.0±21.4)min vs. (134.0±24.3)min]and X-ray exposure time((10.7±4.7)min vs. (15.8±5.2)min)were significantly lower in direct angiography group than in indirect angiography group (both P<0.01). There was no significant difference between the two groups in the immediate (86%(43/50) vs. 82%(41/50), P=0.59) and short-term (76%(38/50) vs. 72%(36/50), P=0.65) success rate and complication rate (1 aneurysm in the direct angiography group, 1 pericardial tamponade in the indirect angiography group). In-hospital mortality was zero percent. Conclusion It is safe and effective method to guide the radiofrequency catheter ablation of paroxysmal atrial fibrillation by reconstruction 3D image of left atrium and pulmonary vein. Compared with indirect angiography group, direct angiography group can improve the imaging quality of left atrium and pulmonary vein, decrease the X-ray exposure time of the ablation procedure.

Objective:To analyze the clinical characteristics of pesticide poisoning patients and explore the risk factors of acute kidney injury (AKI) .Methods:In September 2020, the clinical data of 155 patients with pesticide poisoning in the department of nephropathy, the Affiliated Hospital of Southwest Medical University from September 2018 to August 2020 were retrospectively analyzed. The patients were divided into AKI group (44 cases) and non AKI group (111 cases) according to the occurrence of AKI. The clinical characteristics, organ or system involvement and auxiliary examination results of the two groups were analyzed. Logistic regression was used to analyze the risk factors of AKI in patients with pesticide poisoning.Results:The types of pesticides causing poisoning mainly included herbicides, insecticides and biochemical pesticides. Compared with non AKI group, patients in AKI group had higher proportion of blood purification treatment and ICU monitoring treatment ( P<0.05) , and were more likely to be complicated with acute respiratory failure, pulmonary fibrosis, myocardial injury, multiple organ dysfunction syndrome (MODS) , acute pancreatitis and coagulation abnormalities ( P<0.05) . The mortality of AKI group (18.2%, 8/14) was significantly higher than that of non AKI group (0.9%, 1/111) ( P<0.05) . Univariate analysis showed that the time from poisoning to treatment > 6 h, high WBC count, neutrophil count, alanine aminotransferase, aspartate aminotransferase, high sensitive troponin T, myoglobin and creatine kinase isoenzyme were the risk factors of AKI in patients with pesticide poisoning ( P<0.05) . Multivariate logistic regression analysis showed that the time from poisoning to treatment >6 h was an independent risk factor for AKI in patients with pesticide poisoning ( P<0.05) . Conclusion:The mortality of AKI secondary to pesticide poisoning is high. Attention should be paid to the time from poisoning to treatment, inflammatory state and changes of liver and myocardial function.

Objective:To analyze the clinical characteristics of pesticide poisoning patients and explore the risk factors of acute kidney injury (AKI) .Methods:In September 2020, the clinical data of 155 patients with pesticide poisoning in the department of nephropathy, the Affiliated Hospital of Southwest Medical University from September 2018 to August 2020 were retrospectively analyzed. The patients were divided into AKI group (44 cases) and non AKI group (111 cases) according to the occurrence of AKI. The clinical characteristics, organ or system involvement and auxiliary examination results of the two groups were analyzed. Logistic regression was used to analyze the risk factors of AKI in patients with pesticide poisoning.Results:The types of pesticides causing poisoning mainly included herbicides, insecticides and biochemical pesticides. Compared with non AKI group, patients in AKI group had higher proportion of blood purification treatment and ICU monitoring treatment ( P<0.05) , and were more likely to be complicated with acute respiratory failure, pulmonary fibrosis, myocardial injury, multiple organ dysfunction syndrome (MODS) , acute pancreatitis and coagulation abnormalities ( P<0.05) . The mortality of AKI group (18.2%, 8/14) was significantly higher than that of non AKI group (0.9%, 1/111) ( P<0.05) . Univariate analysis showed that the time from poisoning to treatment > 6 h, high WBC count, neutrophil count, alanine aminotransferase, aspartate aminotransferase, high sensitive troponin T, myoglobin and creatine kinase isoenzyme were the risk factors of AKI in patients with pesticide poisoning ( P<0.05) . Multivariate logistic regression analysis showed that the time from poisoning to treatment >6 h was an independent risk factor for AKI in patients with pesticide poisoning ( P<0.05) . Conclusion:The mortality of AKI secondary to pesticide poisoning is high. Attention should be paid to the time from poisoning to treatment, inflammatory state and changes of liver and myocardial function.