Adipocytes ; chemistry ; Blood Vessels ; Cytokines

Objective To evaluate the effect of permanent right ventricular apical (RVA) pacing in different cumulative percent of right ventricular pacing( CUM% VP) on the heart function and cardiac ventricle structure in subjects with normal basic heart function. Methods Patients who had implanted pacemaker when heart function was still normal were recruited in the study while they revisited for replacement or examinations of implanted pacemaker at outpatient. According to different CUM% VP, patients were divided into group A ( CUM% VP≥85% ,n =78) and group B( CUM% VP≤40% ,n =63) . The primary composite endpoint was defined as new-onset heart failure, death, left ventricular ( LV ) dysfunction and remodeling. The occurrence of endpoints were compared between the two groups. The left ventricular end-diastolic diameter (LVEDD), left ventricular ejection fraction (LVEF) and interventricular septum(IVS) were measured through baseline and follow-up, their absolute alterations ( △ LVEF, △ LVEDD and △ IVS ) were observed. Results The mean duration of two assessment was 7.4 years in group A and 7.7 years in group B, respectively. Before pacemaker implantation,there were no differences in age, sex, basic diseases, cardiac function and constituent ratio of pacemakers between the two groups. By comparing the outcomes of group A with those of group B at the end of follow up, we found that: △ LVEDD in group A was significantly larger than that in group B ( [3. 8 ± 0. 5] mm vs [1.4 ± 0. 4] mm,t = 4. 540,P ＜ 0. 01 ), △ LVEF was ( - 6.5 ± 1.2) % and ( - 3.3 ± 1.0) % in group A and B, respectively,with significant difference between the two groups(t = 2. 578 ,P ＜0. 01 ). There were no significant difference in AIVS between the two groups. No death occurred in both group at the end of follow up. The incidence of LV dysfunction and remodeling was 25.6% (20/78) in group A,which was significantly higher than that of 6.3% (4/63) in group B( x2 =9. 183 ,P =0. 002). and the incidence of new-onset heart failure was 10. 3% (8/78)in group A,which was significantly higher than that of 1.6% (1/63) in group B (x2 =4.383,P =0.036).Conclusion Among patients with normal basic LV function who underwent permanent RVA pacing,there are potential risk in developing LV remodel, function damage and heart failure. The risk increases with the pacing time getting longer and CUM% VP getting higher.

Carcinoma, Adenoid Cystic ; Female ; Humans ; Laryngeal Neoplasms ; Middle Aged

Objective: To prepare ibuprofen dispersible tablet and compare its pharmacokinetics and bioavailability with market tablets in rabbits. Methods: According to inspection of factors and orthogonal design, optimal formulation was decided. A randomized crossover and self control design was used. Eight healthy rabbits were single oral dosed with 100 mg ibuprofen dispersible tablet or market tablet, respectively. The plasma drug concentration was determined by HPLC method. The pharmacokinetic parameters were calculated by 3P87 program and the bioequivalence was assessed by NDST5.0 program. Results: A one compartment open model was adopted and the pharmacokinetic parameters of dispersible tablet and market tablet were as follows: c max were (9.79?2.25) and (4.54?1.50) ?g/ml; t max were (0.27?0.07) and (2.03?0.53) h; t 1/2 were (6.65? 2.14) and (9.17?4.38) h; AUC 0~∞ were (94.11?28.38) and (65.20?18.38) ?g?h?ml -1 , respectively. Ralative bioavailability of the dispersible tablet was 164.11% compared to market tablet. Conclusion: Ibuprofen dispersible tablet is administrated easily and absorbed quickly, and its bioavailability is far more better than the market one. [

With the progress of human civilization,the harmonious development of society is gradually realized by different researchers.Medicine,as a science directly serving humans,emphasizes more on humanism than other sciences.Medical research is not only characterized by scientificity and innovativeness,but also by ethicality.More and more biomedical journals are paying attention to issues of ethics.This review discussed the ethical issues in academic medical writing based on the Uniform Requirements for Manuscripts Submitted to Biomedical Journals published by International Committee of Medical Journal Editors (ICMJE) and the discussions by Committee on Publication Ethics (COPE).

Objective To analyze the pathological significance of CK5 expression in primary cutaneous amyloidosis(PCA).Methods The expression of CK5 in superficial dermis of PCA group and the control group[lichen planus(LP),lupus erythematosus(LE)]were detected by CK5 monoclonal antibody.The infiltration densities of CD3-positive T lymphocytes and CD68-positive macrophages in superficial dermis of PCA and control group were measured respectively by immunohistochemical staining using anti-CD3 antibodies and anti-CD68 antibodies.The skin lesions of PCA and control groups were analyzed by immunofluorescence to detect whether CK5 was phagocytosed by macrophages in superficial dermis.Results Totally,39 cases of PCA all were CK5-positive.Some control cases were positive.The number of CD3-positive T lymphocytes and CD68-positive macrophages in 8 cases of PCA group was lower than that of control group.The result of immunofluorescence colocalization of monoclonal anti-CK5 antibodies and anti-CD68 antibodies in 5 cases of PCA lesions was negative;that in 2 cases of LE lesions were both positive,and that in 2 cases of LP lesions were both negative.Conclusion Amyloid protein may be derived from the basal keratinocytes after interface damage.The amyloid protein deposits may be related to the number decrease or the functional defect of macrophages.

Objective:To investigate the psychosocial characteristics of the perpetrators and the victims of spouse violence (SV).Methods:80 families with a history of SV were randomly selected from communities, and their psychosocial characteristics were compared with control group of 96 non-SV families matched for family structure. A self-designed SV questionnaire, the self-report Symptom Checklist-90 (SCL-90), Eysenck's Personality Questionnaire (EPQ), Trait Coping Style and Questionnaire (TCSQ) were used in this cross-sectional survey.Results:65 husbands and 15 wives were identified as perpetrators, correspondingly 65 wives and 15 husbands as victims. The total score and factors scores of SCL-90, EPQ-N score, and scores of subjective social support, objective support and total supports were higher in perpetrators than their counterparts in control group. Negative coping style and EPQ-P score were respectively higher and lower in perpetrators than victims of SV (29.6?8.3/29.5?7.4,t=2.127, P

Some traditional Chinese medicine technologies,with strong safety, quick and significant effect, standerdized manipulation, simple operation and good prospect for promotion and application are selected in the research project for application and demonstration of rural health appropriate technology. Through the application of the project, we have new experience in medical teaching.

Objective To evaluate endoscopic ultrasonography (EUS) in assessing endoscopic re-sectability of early esophagogastric cancer. Methods Data of 65 consecutive cases suspected as having early esophagogastric cancer with EUS and confirmed by pathology after endoscopic mucosal resection or endoscop-ic submucosal dissection within 2 weeks were retrospectively analyzed. The invasion depth of the lesion de-tected by EUS was compared with that from pathology. Results The accuracy of EUS in diagnosis of depth of early cancer invasion was 93.8% (61/65), and the overall accuracy in assessment of endoscopic resectabili-ty was 89. 2%. Conclusion Endoscopic resectability of early esophagogastric cancer can be accurately eval-uated with EUS.

Objective To investigate the inhibitory mechanism of rabeprazole on acid secretion of parietal cells in rats. Methods Seventy two Spraque-Dawley rats were divided into control group(normal saline), low dose of rabeprazole group (rabeprazole 10 mg/kg) and high dose of rabeprazole group (rabeprazole 20 mg/kg) with 24 each. Four rats in each group were treated at 1 h, 2 h, 4 h, 6 h, 12 h and 24 h, respectively, pH value and activity of H+-K+-ATPase were tested by NaOH titrimetric method and chromatometry, respectively. The changes of ultrastructure of parietal cells were observed by electron microscope. Results Compared with control group(1.97±0.30), pH value in low (3.37± 0.97)and high (5.96±0.26)dose groups were significantly increased(P<0.01), and the activity of H+-K+-ATPase was inhibited obviously at 1 h after administration(3.28±0. 41 vs 1.47±0.27 and 0.92±0.07, P<0.05). Those differences could be found even at 12 h(P<0.01). The ultrastructural changes of parietal cells were consistent with the increase of pH value and decreased activity of H+-K+-ATPase. The significant difference was found in acid depression and excellent time between low and high dose of rabeprazole groups. Conclnsions The uhrastructural changes of parietal cells and the activity of H+-K+-ATPase can accurately reflect the acid secretion in rats. Rabeprazole has powerful and rapid effects in inhibiting acid secretion which correlates with the dosage.