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Objective:To study the effect and mechanism of mitochondria-targeted antioxidant peptide SS-31 on sepsis-induced acute kidney injury (AKI).Methods:Sixty adult male C57BL/6 mice were randomly divided into four groups according to the random number table method: sham group (10 mice), positive control group (10 mice), sepsis model group (20 mice), and SS-31 peptide group (20 mice). The sepsis-induced AKI mouse model was reproduced by cecal ligation and puncture (CLP). The sham group only received laparotomy. SS-31 peptide (5 mg/kg) was intraperitoneally injected in SS-31 peptide group and positive control group 30 minutes after the operation, while an equivalent amount of normal saline was given in sham group and sepsis model group for 7 days. The blood samples were collected 24 hours after the operation from orbit, and the serum was collected to test the serum creatinine (SCr) and blood urea nitrogen (BUN). The mice were sacrificed 7 days after surgery. The kidney tissues were collected to observe the pathologic structure changes under the hematoxylin-eosin (HE) staining by light microscope. And the mitochondrial ultrastructure was checked under the transmission electron microscope. Cell apoptosis was detected by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling method (TUNEL). The expression level of peroxisome proliferator-activated receptorγ coactivator-1α (PGC-1α), adenosine monophosphate-activated protein kinase (AMPK), and cleaved caspase-3 protein were tested by Western blotting.Results:Compared with sham group, the levels of SCr and BUN were significantly increased in sepsis model group [SCr (μmol/L): 93.12±11.80 vs. 32.94±3.37, BUN (mmol/L): 41.36±6.48 vs. 9.49±3.58, both P<0.05]. The expression levels of AMPK, PGC-1α and cleaved caspase-3 protein increased (AMPK/β-actin: 0.30±0.02 vs. 0.12±0.01, PGC-1α/β-actin: 0.38±0.03 vs. 0.16±0.02, cleaved caspase-3/β-actin: 0.20±0.01 vs. 0.11±0.02, all P<0.05). HE staining showed that inflammatory cell was infiltrated, glomerular basement membrane was exposed and vacuole-like transparent casts were found in the lumen. Mitochondria were damaged under electron microscope with swelling, ridge disappearance and ruptured membranes, with increasing of apoptotic cells [cells: 24.00 (18.75, 31.00) vs. 2.00 (0.72, 3.25) , P<0.05]. Meanwhile, compared with sepsis model group, the levels of SCr, BUN and the expressions of AMPK, PGC-1α, cleaved caspase-3 protein were significantly decreased in the SS-31 peptide group [SCr (μmol/L): 71.33±10.14 vs. 93.12±11.80, BUN (mmol/L): 27.00±5.52 vs. 41.36±6.48, AMPK/β-actin: 0.23±0.01 vs. 0.30±0.02, PGC-1α/β-actin: 0.27±0.02 vs. 0.38±0.03, cleaved caspase-3/β-actin: 0.13±0.01 vs. 0.20±0.01, all P < 0.05]. HE staining showed that cell swelling reduced, the mitochondrial structure was intact, the ridge swelling was also reduced, and the membrane structure was relatively intact, the number of apoptotic cells was significantly reduced [cells: 13.00 (9.00, 16.50) vs. 24.00 (18.75, 31.00) , P<0.05]. Conclusion:The protective effect of SS-31 peptide on organ dysfunction induced by sepsis-induced AKI is related to maintaining mitochondrial homeostasis and inhibiting cell apoptosis.
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Objective To analyze the process of triage in disaster rescue action performed by a mobile medical unit so that the rescue process can be improved , the efficiency of rescue enhanced , and the decision on health service in rescue action is supported.Methods The process of triage in disaster rescue action was modeled based on stochastic Petri net while the performance of the model was analyzed quantitatively .Results and Conclusion The critical factor which affects the efficiency of rescue work is obtained by analyzing the performance of the model .
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Objective To construct an executable model of a hypoxia response network (HRN) and to analyze the dynamic evolution mechanism of an HRN including randomness as well as concurrency based on computer simulation. Methods Specific evolution rules and Gillespie algorithm were adoped to study the dynamic evolution of the structural model based on the construction of a structural model of an HRN using stochastic Petri net ( SPN ) .Results Dynamic evolution laws of an HRN were obtained and the simulation results were consistent with laboratory results in response to descript switch-like behavior of an HRN .Conclusion A visualization model of the HRN can be achieved using SPN method.Simulation results achieved by executing the model based on stochastic simulation using specific kinetic parameters can serve as a nice complement to traditional laboratory results , which can help shed light on the structure and function characteristics of an HRN.
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With the great progress in information technology , military medical evacuation has become an extremely important research topic about any information-based war.Thus, this paper aims to analyze the application and effect of modern information technology in military medical evacuation .This paper starts with the developments of modern military medical evacuation and the key areas of military medical evacuation research .Then, the effect of modern information technology on military medical evacuation is discussed regarding the search for and rescue of the wounded , medical treatment of the wounded ,and command and control system of military medical evacuation .Finally, the key technologies for the above tasks are introduced .
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Objective To establisha high altitude military medicine digital library ( HAMMDL) in order to integrate high altitude military medicine ( HAMM ) digital resources and promote transformation of HAMM technology to health service application.Methods The solution of Web 3.0-basedHAMMDL was proposed.Ontology, the metadata and Wiki paradigm were used to manage and present resources , while the Model-View-Controller pattern was used in software design .Results Based on analysis of the functional requirements and key techniques of HAMMDL , design principles were proposed the hierarchical software architecture pattern was designed , the software supporting technology was provided and the construction method of HAMM ontologies was discussed .Conclusion With the synthesized application of relative technologies , smart utilization and socialized content management pattern of HAMM digital resources can be achieved .
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Objective To investigate the feasibility and effectiveness of ‘ group-head responsibility teaching method' in the physiology experiment teaching.Methods Totally 422 students of clinical medicine major in 2010 grade were randomly divided into two groups:212 students in control and 210 in study group.For students in control group,principles,procedures,items of experiment and computer operation were first taught,then experiment was performed while for those in study group,initial procedures were firstly explained,then the group heads were called together to observe the experiment preformed by teacher,after that the group heads returned to assist other students performing the experiment.Finally,experiment success rates,scores of final-term experiment operation,theoretical exam and report of two groups were compared and analyzed.Meanwhile,questionnaire survey was conducted.Results Success rates were improved significantly in study group than in control group (x2 =37.42,P =0.0000).There were significant differences in operation scores (t =4.3213,P =0.0000),theoretical exam scores (t =6.8744,P =0.0000) and report scores (t =15.298,P =0.0000) between the two groups.Conclusions ‘ Group-head responsibility teaching method' is better than traditional lecture-style teaching method and it can promote comprehensive capabilities of students.
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Objective To analyze the effects of flexible ureteroscopic Holmium laser lithotripsy on renal function in the treatmen of renal calculi. Methods From October 2010 to March 2012,41 cases of solitary renal calculi (24 males and 17 females) were treated with flexible ureteroscopic Holmium laser lithotripsy ( FURL).Patient's mean age was 51.9 ± 15.9 years ( range from 31 to 88 years).Locations of renal calculi detected by image study were 22 cases in middle and upper calyx,9 cases in lower calyx,10 case in renal pelvis.The mean size of calculi was 16.9 ±6.0 mm (range from 10 to 28 mm).Blood samples (2 h pre-operatively,and then 2 h,12 h,24 h,48 h,72 h post-operatively) were collected and serum NGAL,serum Cys-C were tested Results The measured levels of pre-operative NGAL and Cys-C were 3.5 ± 0.6μg/L,501.7±121.3 μg/L,and levels of post-operative NGAL at 2 h,12 h,24 h,48 h and 72 h were 4.2±0.8 μg/L,5.0±1.0 μg/L,4.9±1.4 μg/L,4.3± 1.1 μg/L and 3.8 ±0.1 μg/L,while the according levels of Cys-C were ( 516.4 ± 126.2 ) μg/L,( 723.8 ± 134.8 ) μg/L,( 770.4 ± 162.8 ) μg/L,(671.7 ± 138.3 ) μg/L and 574.0 ± 116.7 μg/L.Serum NGAL began to increase 2 hours after operation (P ＜0.05,and reached the peak in 12 hours,it began to decline 12 hours after surgery,but it was still higher at 72 hours than pre-operative level (P ＜ 0.05.Serum Cys-C showed no obvious ascent 2 hours after operation in FURL group ( P ＞ 0.05 ),but increased obviously 12 hours after operation and lowered down after the peak that occurred 24 hours after surgery.Serum Cys-C still remain above the baseline 72 hours after operation (P ＜0.05). Conclusions Flexible ureteroscope lithotripsy can cause reversible damage to renal function after surgery.
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Objective To evaluate the efficiency and clinical value of modular flexible ureteroscope combined with Holmium laser lithotripsy for treatment of renal calculi. MethodsA total of 46 patients with renal calculi were treated with modular flexible ureteroscope combined with Ho:YAG lithotripsy in our hospital from December 2009 to May 2011.There were 19 cases in middle and upper calyx,8 cases in lower calyx,15 case in renal pelvic,and 4 cases in multiple calyxes.The calculi diameter ranged from 6mm to 31 mm (average in 15 ± 7.9 mm).Flexible ureteroscope was used to find renal calculus under epidural anesthesia,and Holmium laser lithotripsy was used at a maximum energy of 12 to 20W (0.8 - 1.0 J/15 -20Hz).F5 or F6 double-J tubes and catheters were indwelled routinely postoperatively.-examine with KUB and removethe catheter 2 days after operation.Re-examine with B-ultrasonography or KUB 4 weeks after op-eration to evaluate the stone free rate.Residual stones ≥4 mm were regarded as clinical significance of residual stone fragments. Results 45 operations were successful except one case changed to percutaneous nephrolithotomy (PCNL) because of ureteral stricture.The operation time was 45 -150 min (average in 110.4 ±25.3 min).The patients were discharged from hospital in 2 -5 days(average in 3 days) after operation.The stone detection rate was 95.6％ (44/46),and the stone free rate was 86.9％ (40/46) after one operation. No severe complications such as ureteral perforation or hemorrhea occurred. Conclusions Modular flexible ureteroscope combined with Holmium laser lithotripsy is effective and safe for treatment ofrenal calculi,meanwhile it can decrease the high maintenance costs of integrated flexible ureteroscope.
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<p><b>OBJECTIVE</b>To explore the effects of Guizhi Tang on the inflammatory cytokines in myocardial ischemia and hyperlipidemia rats.</p><p><b>METHOD</b>The early changes of hyperlipid and atherosclerosis are caused by utilizing multiple factors including feeding hyperlipid and propylthiouracil and high doses of vitamin D3 for 12 weeks. Sixty male SD rats were randomly divided in to 5 groups: control group, model group, simvastatin group, low-dosage Guizhi Tang group, high-dosage Guizhi Tang group. At the end of six weeks treatment, pituitrin(pit) is abdominal cavity injected every 24 hours for a total of three times. Detecting the serum levels of SES, CRP, NO, SOD, MDA and the content of cardiac muscle tissue SOD, MDA, The expression of TNF-alpha in cardiac muscle tissue was detected by immunohistochemistry.</p><p><b>RESULT</b>Guizhi Tang significantly decreased levels of SES, CRP and MAD, increased levels of NO and SOD, Guizhi Tang markedly decreased the level of protein expression of TNF-alpha in cardiac muscle tissue.</p><p><b>CONCLUSION</b>Guizhi Tang may inhibit the proinflammatory factors and oxidation in myocardial ischemia and hyperlipidemia rats.</p>
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Animals , Male , Rats , C-Reactive Protein , Metabolism , Cytokines , Metabolism , Drugs, Chinese Herbal , Pharmacology , Hyperlipidemias , Blood , Metabolism , Pathology , Inflammation , Metabolism , Malondialdehyde , Blood , Metabolism , Myocardial Ischemia , Blood , Metabolism , Pathology , Myocardium , Metabolism , Pathology , Nitric Oxide , Metabolism , Rats, Sprague-Dawley , Superoxide Dismutase , Blood , Metabolism , Tumor Necrosis Factor-alpha , MetabolismABSTRACT
Objective To compare the efficacy and complications of Chinese Shang Ring circumcision with conventional circumcisiom Methods Clinical data of 479 cases of Chinese Shang Ring circumcision and 354 cases of conventional circumcision with complete follow-up were analyzed.Comparisons were made between the two groups on operation time,pain score,blood loss,postoperative complications,postoperative satisfaction with penile appearance,wound healing time and treatment costs. Results There was no statistical difference in age and foreskin status between the two groups (P＞0.05).For the Shang Ring group,the operation time was(5±1)rain,blood loss was (0.98±1.14)ml,pain score during operation was 0.25±0.54,24-hour pain score after operation was 1.63±0.87,the postoperative complication rate was 6.89% (33/479),wound healing time was (20±5)d,the satisfaction rate of appearance was 99.79% (478/479),and treatment cost was (871±52) yuan.For the conventional group,the operation time was (27±5) min,blood loss was (8.30±3.60)ml,pain score during operation was 3.29±1.57,24-hour pain score after operation was 5.56±1.42,the postoperative complication rate was 13.28%(47/354),wound healing time was (13±2)d,satisfaction rate of appearance was 92.37% (327/354),and treatment cost was (554±46) yuan.Compared with the conventional group,the Shang Ring group had a shorter operation time,less blood loss,less pain score,higher appearance satisfaction rate and a lower complication rate (P＜0.05).But wound healing time was longer and treatment cost was higher in the Shang Ring group (P＜0.05). Conclusions Chinese Shang Ring circumcision is simpler and an improved approach over conventional circumeision with shorter operative time,less blood loss,less pain,relatively lower complication rate and higher satisfaction and acceptability.
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Objective The current study is aimed to investigate the association of single nucleotide polymorphisms and gene expression in peptidylarginine deiminase Ⅳ (PADI4) with rheumatoid arthritis (RA).Methods The gene expression of PADI4 was examined using real-time quantitative reverse transcription-polymcrase chain reaction (RT-PCR) in 70 patients with RA and 81 healthy controls. Four exonie SNPs of the PADI4 gene (PADI4_89, _90, _92, _104) were genotyped using DNA sequencing and TA cloning.Results The distribution of PADI4_89, _90, _104 SNPs in RA was different from that of healthy controls. The increased RA susceptibility was significantly associated with minor alleles. When haplotypes were construe -ted with 4 SNPs, two major haplotypes, ACCC and GTGT were found in all samples, and GTGT haplo-type (carrying only the minor alleles) was significandy associated with increased RA susceptibility (P<0.01)in comparison with the reference haplotype ACCC. There was over expression of PADI4 in RA than controls(P<0.05). C, enotypes carrying the minor alleles had higher expression level of PADI4 in RA and controls than those with the common alleles. Conclusion PADI4 SNPs and haplotypes are associated with RA susceptibility in Chinese. PADI4 is over-expressed in the blood of RA patients, and there is significant association between the haplotypes and expression level of the PADI4 gene.
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s:Objective To explore effect of the Tangshen Tongluo (TSTL) recipe on ET and ANP in patients with early diabetic nephropathy (DN). Methods 45 Cases of early DN patients were randomly divided into the TSTL recipe group (25 cases) and Lotensin group (20 cases). After the treatment of TSTL recipe and Lotensin, TCM symptom, the level of FBG, HbA1c, ET, ANP, TC, TG, HDL-C, LDL-C and urine micro albumen excretion rate (UAER) were detected. Results After the treatment of TSTL recipe and Lotensin, TCM symptom, the level of FBG, ET, ANP, TC, TG, LDL-C and UAER were found markedly lower in the TSTL recipe than that in the Lotensin group (P
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Objective To observe the therapeutic effect of the Zishen Huoxue Jiedu (ZSHXJD) method on patients with chronic renal failure (CRF). Methods 252 cases of CRF were treated by ZSHXJD method. TCM symptom, the serum level of Cr, BUN, ET, ANP, IL-8, ?2-mg, HGB and level of urine protein were detected. Results After the treatment, TCM symptom, the level of Cr, BUN, ET, ANP, IL-8, ?2-mg and urine protein were found markedly lower than that before the treatment (P
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In this paper,teaching idea,teaching method,study motives,study method,study strategy and other aspects have been investigated,analysed and studied according to the problem "spending more time studying English and taking less effect"in English teaching in order to change teaching idea,reform English teaching cotent and teaching methord,train good study strategy,arouse the enthusilasm of students,raise the English teaching.quality and train fine talents.
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Objective The Application of Circular Mapping during Circumferential Pulmonary Vein Ablation (CPVA) for Atrial Fibrillation Guided by Ensite/NavX System. Methods To evaluate the effect of combined circular mapping on the success rate of CPVA. 61 consecutive cases (40 males and 21 females) were included in the study. 50 cases with paroxysmal atrial fibrillation (PAF) and 11 cases with chronic atrial fibrillation (CAF) underwent CPVA guided by the Ensite/NavX system. A circular electrode catheter was used to map the pulmonary vein (PV) potentials. Pulmonary vein isolation was taken as the endpoint for ablation. Results All the 61 cases underwent the procedure successfully. LPVs were isolated in 34 cases and 35 cases underwent single RPVs isolation. Circumferential ablation of both LPVs and RPVs were carried out in 23 cases. Atrial fibrillation was terminated when delivering radiofrequency energy in 16 cases with PAF and 5 cases with CAF. The termination sites were located near the anterior or posterior roof of the superior PVs in 19 cases and at the mid-portion of the posterior wall from RSPV in 1 case. Atrial fibrillation was terminated when after comple to LPV ablation in 1 case. During the follow-up of 6?2 months, 42 PAF cases and 5 of 11 CAF cases were atrial fibrillation free. The total success rate was 77%. Complications: Pericardium effusion was found in 1 case and disappeared after pericardium puncture and drainage. 1 case developed hemothorax and was cured after thorax puncture and drainage. Conclusion The application of circular mapping during circumferential pulmonary vein ablation guided by Ensite/NavX System contributes to improve the success rate of atrial fibrillation ablation.