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Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease affecting both upper and lower motor neurons in the brain and spinal cord. One important aspect of ALS pathogenesis is superoxide dismutase 1 (SOD1) mutant-mediated mitochondrial toxicity, leading to apoptosis in neurons. This study aimed to evaluate the neural protective synergistic effects of ginsenosides Rg1 (G-Rg1) and conditioned medium (CM) on a mutational SOD1 cell model, and to explore the underlying mechanisms. We found that the contents of nerve growth factor, glial cell line-derived neurotrophic factor, and brain-derived neurotrophic factor significantly increased in CM after human umbilical cord mesenchymal stem cells (hUCMSCs) were exposed to neuron differentiation reagents for seven days. CM or G-Rg1 decreased the apoptotic rate of SOD1G93A-NSC34 cells to a certain extent, but their combination brought about the least apoptosis, compared with CM or G-Rg1 alone. Further research showed that the anti-apoptotic protein Bcl-2 was upregulated in all the treatment groups. Proteins associated with mitochondrial apoptotic pathways, such as Bax, caspase 9 (Cas-9), and cytochrome c (Cyt c), were downregulated. Furthermore, CM or G-Rg1 also inhibited the activation of the nuclear factor-kappa B (NF-κB) signaling pathway by reducing the phosphorylation of p65 and IκBα. CM/G-Rg1 or their combination also reduced the apoptotic rate induced by betulinic acid (BetA), an agonist of the NF-κB signaling pathway. In summary, the combination of CM and G-Rg1 effectively reduced the apoptosis of SOD1G93A-NSC34 cells through suppressing the NF-κB/Bcl-2 signaling pathway (Fig. 1 is a graphical representation of the abstract).
Assuntos
Humanos , NF-kappa B/metabolismo , Ginsenosídeos/farmacologia , Esclerose Lateral Amiotrófica/genética , Meios de Cultivo Condicionados/farmacologia , Superóxido Dismutase-1 , Doenças Neurodegenerativas , Neurônios/metabolismo , ApoptoseRESUMO
Objective To investigate the antimicrobial resistance profile of clinical isolates in Dongguan Tungwah Hospital during 2016.Methods Antimicrobial susceptibility testing was carded out for the clinical isolates collected from Dongguan Tungwah Hospital according to a unified protocol using Kirby-Bauer method or automated systems.Result were analyzed according to CLSI 2016 breakpoints.Results Of the 3 482 clinical isolates,gram positive cocci and gram negative bacilli accounted for 34.4％ (1 199/3 482) and 65.6％ (2 283/3 482),respectively.The prevalence of methicillin-resistant strains was in 28.7％ (86/300) in S.aureus and 77.7％ (300/386) in coagulase-negative Staphylococcus isolates.No staphylococcal strains were found resistant to vancomycin or linezolid.Overall,one E.faecium strain was identified as resistant to vancomycin by instrument method and confirmed by vancomycin E test.The prevalence of ESBLs-producing strains was 59.6％ (337/565) in E.coli and 29.8％ (115/386) in Klebsiella spp.(K.pneumoniae and K.oxytoca).Enterobacteriaceae strains were still highly susceptible to carbapenems.Overall,0.4％ and 0.2％ of the Enterobacteriaceae strains were resistant to imipenem and meropenem,respectively.About 38.3％ and 36.9％ of Acinetobacter strains were resistant to imipenem and meropenem,respectively.Conclusions Surveillance of antimicrobial resistance is most important and valuable for understanding the changing resistant pattern in local hospital and rational selection of antimicrobial agents.More attention should be paid to surveillance of antimicrobial resistance to avoid the spread of drug resistant strains.
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Objective To investigate the effect of seven-step exercise regurgitation in stage I exercises on the risk of fall in patients with acute ST-elevation myocardial infarction. Methods At the time of admission, 119 patients with acute ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention (PCI) were randomly divided into control group (n=58) and intervention group (n=61). All patients were given routine nursing within 7 days after operation. The patients in the intervention group were given the first three-step exercises based on the seven-step exercise regurgitation in stage I exercise apart from routine nursing within 7 days after operation. The risk of fallings was assessed on the 7th day after operation for the two groups. Result Compared with the control group, the risk of fallings on day five after operation in the intervention group was significantly lower than that in the control group (P<0.05). Conclusion The seven-step exercise of stage I cardiac rehabilitation can effectively reduce the risk of falling in patients with acute myocardial infarction after PCI.
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Objective To survey the resistance profile of clinical isolates to antibiotics across the hospitals in Dongguan,Guangdong Province during 2015.Methods Kirby-Bauer method or automated system was used to test the susceptibility of clinical isolates to selected antimicrobial agents.Results were analyzed according to CLSI 2015 breakpoints.The susceptibility data were analyzed using WHONET 5.6 software.Results A total of 29 665 strains of microorganisms were isolated,of which gram positive cocci accounted for 32.1％ (9 509/29 665) and gram negative bacilli accounted for 67.9％ (20 156/29 665),respectively.The prevalence of methicillinresistant Staphylococcus was 23.3％ (705/3 024) in S.aureus and 43.6％ (1 054/2 419) in coagulase-negative Staphylococcus.No vancomycin-resistant staphylococcal strain was found.ESBLs-producing strains accounted for 36.4％ (2 554/7 020) in E.coli and 24.5％(792/3 227) in Klebsiella isolates.The prevalence of carbapenem-resistant Enterobacteriaceae was 0.2％ (30/13 077).The prevalence of carbapenem-resistant Pseudomonas aeruginosa (CRPA) and carbapenem-resistant Acinetobacter baumannii (CRAB) was 16.0％ (500/3 116) and 53.9％ (827/1 533),respectively.The prevalence of penicillin-resistant S.pneumoniae (PRSP) strains was 10.1％ (142/1 404).Beta-lactamase was produced in 30.6％ (276/902) of the H.influenzae strains.The prevalence of vancomycin-resistant Enterococcus (VRE) strains was 0.7％ (10/1 441).Conclusions Periodic surveillance of antimicrobial resistance is valuable for rational antimicrobial therapy,formulation of treatment guidelines and infection control and prevention measures,as well as preventing the spread of drug-resistant strains.
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Objective To investigate the effect of seven-step exercise regurgitation in stage I exercises on the risk of fall in patients with acute ST-elevation myocardial infarction. Methods At the time of admission, 119 patients with acute ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention (PCI) were randomly divided into control group (n=58) and intervention group (n=61). All patients were given routine nursing within 7 days after operation. The patients in the intervention group were given the first three-step exercises based on the seven-step exercise regurgitation in stage I exercise apart from routine nursing within 7 days after operation. The risk of fallings was assessed on the 7th day after operation for the two groups. Result Compared with the control group, the risk of fallings on day five after operation in the intervention group was significantly lower than that in the control group (P<0.05). Conclusion The seven-step exercise of stage I cardiac rehabilitation can effectively reduce the risk of falling in patients with acute myocardial infarction after PCI.
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Objective To study the imaging findings, clinical and pathological characteristics of langerhans cell histiocytosis(LCH)in limbs of children, and to improve the imaging diagnostic accuracy of LCH . Methods Imaging findings and clinical data of 12 patients with limbs LCH were analyzed retrospectively. X-ray examination was performed in 10 cases, while 9 cases underwent CT and 7 cases underwent MRI examination. All imaging findings were analyzed. Results Seven lesions were solitary, including 4 lesions in the tibia, 2 in the radius and 1in the ulna. Five cases had limbs lesion in multiple sites, which included 12 bone lesions in total, with 6 lesions in the femur, 3 in the humerus (1 case involved the epiphysis), 2 in the tibia and 1in the radius. The X-ray or CT images of the lesions showed osteolytic destruction and swelling of the bone, which was commonly associated with the reaction of periosteum. Eleven cases were with peripheral soft tissue swelling, and one case had soft tissue mass. The lesions showed low signal on T1WI and high signal or mixed signal on T2WI. Six cases were diagnosed as LCH at the first time and the other 6 cases were diagnosed as infectious lesions. Twelve cases were regularly followed up after the treatment, and the prognosis of the patients with single lesion was better. Conclusions LCH of limbs usually involves diaphyseal and metaphyseal bone. The imaging features include osteolytic destruction and swelling of the bone, with peripheral soft tissue swelling or mass of the soft tissue. Although LCH of limbs has some specific imaging features, it is difficult to differentiate it from malignant bone tumors. Multi-imaging modalities such as radiography, CT and MRI imaging may suggest the diagnosis and provide important information for evaluating prognosis.
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AIM:28 patients with congestive heart failure (CHF) were selected in this studyThe therapeutic scheme was as follows:after withdrawal of other vasodilators,urapidil was given in dose of 100～400?g/min intravenous drip;in severe case,the administration continued for 24～72 h;treatment lasted 3～6 daysThe patients'blood pressure,heart rate and LVEF were measured before and after treatmentRESULTS:The patients'clinical manifestations were markedly improved with a total effective rate of 89%LVEF was improved obviously too and the product of systolic pressure and heart rate was decreasedCONCLUSION:Urapidil is a vasodilator with slight side effects,reliable effectiveness and moderate action,and has undoubted therapeutic effect on CHF