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Objective: To explore the value of T2* mapping in quantitative evaluation on early changes of tibiofemoral joint cartilages of new recruits after intensive running training. Methods: Totally 22 male recruits underwent MRI of right knee joint before and after intensive running training, respectively. Tibiofemoral joint cartilages were divided into 6 regions, i.e. weight-bearing area and non-weight-bearing area of medial femoral condyle (MFC), weight-bearing area and non-weight-bearing area of lateral femoral condyle (LFC), medial tibial platform (MTP) and lateral tibial platform (LTP), and each area was further divided into shallow layer and deep layer. T2* values of shallow layer and deep layer of cartilage in each area before training, T2* values of cartilage in each area before and after training were measured and compared. Percentage changes of T2* value in each area before and after training were analyzed. Results: Before training, T2* values of shallow layer of cartilage in all areas of tibiofemoral joint were all higher than that of deep layer (all P<0.05). After training, T2* values of weight-bearing area of LFC, shallow layer of weight-bearing area of MFC, shallow layer of LTP and MTP were higher than that before training (all P<0.05). Statistical difference of percentage changes of T2* values of cartilage were found in all regions before and after training (F=3.66, P<0.05). Conclusion: T2* mapping can be used for noninvasive quantitative evaluation of early changes in new recruits' tibiofemoral joint cartilage after intensive running training.
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BACKGROUND:Comparison of the incidence of fracture can be used as a manner to evaluate the therapeutic effects of anti-osteoporosis drugs. At present, there are a few network meta-analysis on different kinds of anti-osteoporosis drugs. OBJECTIVE:To comprehensively evaluate the risks of different anti-osteoporosis drugs in reducing the vertebral and non-vertebral fractures in postmenopausal women by applying Network Meta-analysis. METHODS: We retrieved The Cochrane Library, PubMed, EMbase, Wanfang, China Biology Medicine, VIP and China National Knowledge Infrastructure for randomized controled trials about vertebral and non-vertebral fractures in postmenopausal women taking anti-osteoporosis drugs. Retrieval time was from building a database to July 2014. Two reviewers extracted and assessed independently the outcomes and quality of included trials according to inclusion and exclusion criteria. We used random effects Bayesian models and fixed effects Bayesian model in WinBUGS 1.4.3 combined R 3.03 software in the network meta-analysis. RESULTS AND CONCLUSION:Forty-six randomized controled trials on vertebral fracture and forty-two randomized controled trials on non-vertebral risk reduction with bisphosphonates (alendronate, risedronate, ibandronate, etidronate, and zoledronic acid), parathyroid hormone (teriparatide), biologics (denosumab), or selective estrogen receptor modulators (raloxifene, bazedoxifene) were identified by a systematic review. Individual study results were pooled in a network meta-analysis to indirectly compare treatment effects in postmenopausal women. The odd ratio and 95% confidence interval of drugs were estimated using random effects Bayesian models in WinBUGS 1.4.3. Zoledronic acid was best in the prevention of vertebral fractures. Risedronate reduced the risk of non-vertebral fracture in postmenopausal women better than other drugs. However, current network meta-analysis cannot give a certain conclusion. A large perspective study designed specialy for confirmation is needed to confirm the results of our study.
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Objective To study the expression changes of CD54 and CD106 in peripheral blood lymphocyte in patients with congest heart failure. Methods With FCM technique, the levels of CD54 and CD106 in lymphocyte from patients with CHF were measured , and those of patients with hypertension , patients with dilated cardiomyopathy and normal controls were measured at the same time. Cardiac function during heart failure episodes and remission stage was monitored by Color Doppler Echocardiography. Results Levels of CD54 and CD106 were significantly elevated in patients with hypertension , patients with active CHF and hypertension , patients with inactive CHF and hypertension when compared with those of normal controls. Levels of CD54 and CD106 were significantly elevated in patients of dilated cardiomyopathy , patients with active CHF and dilated cardiomyopathy , patients with inactive CHF and dilated cardiomyopathy when compared with those of normal controls. Levels of CD54 and CD106 in patients of CHF were elevated with the degree of CHF. There was significantly negative correlation between LVEF and CD54 of CHF. Conclusions CD54 and CD106 may use as the marker to monitor the progress of CHF.
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Objective To investigate the mechanism of heat transfer process in sand therapy in Uyghur medicine. Methods A mathematical model was developed to describe the heat transfer process between human body and the sand during sand therapy. Temperature field was numerically simulated and analyzed based on this model. Results Temperature field in both human tissues and sand was calculated. The surface temperature of the sand and skin surface changed significantly at the beginning of the sand therapy, while sand temperature (5 cm deep) almost kept constant. The skin temperature dramatically increased at the beginning of the sand therapy and then slightly dropped. When sand was deeper than 10 cm, the thickness of sand would not influence the temperature field in human tissues during sand therapy. High initial temperature of sand might cause harmful skin burn. Threshold skin burn occurred if initial temperature of sand was higher than 64.6 ℃ and if the therapy lasted more than 30 minutes.Conclusion Temperature fieled in human tissues varies significantly with the initial temperature of sand, thickness of sand, and duration of therapy.
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<p><b>OBJECTIVE</b>To identify the A3243G mutation of mitochondrial (mt) DNA in patients with latent autoimmune diabetes mellitus in adults (LADA) of Han nationality in the northeast area of China.</p><p><b>METHODS</b>Seventy-nine diabetics of Han nationality, whose families have resided in the northeast area of China for more than 3 generations, were divided into 3 groups: Group 1 (22 cases of type 2 diabetes with maternal inheritance history), Group 2 (34 cases of LADA), Group 3 (23 cases of type 1 diabetes in adolescents). The A3243G of mt DNA was detected in these 79 subjects with the method of PCR-RFLP.</p><p><b>RESULTS</b>None of the 79 diabetics studied was positively identified for the A3243G mutation of mt DNA.</p><p><b>CONCLUSION</b>The A3243G mutation of mt DNA might not be related to the onset of LADA in diabetic population of Han nationality in northeast area of China and there might not be close relationship between A3243G mutation of mt DNA and autoimmunity.</p>
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Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Autoimunes , Genética , DNA Mitocondrial , Genética , Diabetes Mellitus Tipo 1 , Genética , Diabetes Mellitus Tipo 2 , Genética , Mutação PuntualRESUMO
AIM: To observe the effect of phosphorylation protein kinase C delta (PKC?) on the procedure of PC12 cells apoptosis induced by 6-hydroxydopamine(6-OHDA) and to investigate the potential molecular pathogenesis of Parkinson disease.METHODS: TUNEL staining and transmission electron microscope were applied to measure apoptosis when dopaminergic PC12 cells exposed to the excitomotors and inhibitors of PKC before 6-OHDA for 18 hours. The expression of phosphorylation of PKC? was detected by Western blotting. RESULTS: PMA, an activating agent of PKC?, significantly increased PC12 cell apoptosis induced by 6-OHDA. Rottlerin, an inhibitor of PKC?, protected PC12 cells apparently. As contrast, bisindolylmaleimide I, an inhibitor of general PKC and G6976, the inhibitor of calcium-dependent PKC, did not show any protective role. CONCLUSION: The phosphorylation PKC? is one of the important links in the process of PC12 cell apoptosis induced by 6-OHDA. PKC? may directly participate in neurodegeneration process in parkinsonian.
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AIM:To observe the effects of prostaglandin E2 receptor1 (EP1) in neuronal cell death induced by hypoxia/reoxygenation and ischemia/reperfusion. METHODS:The cortical neurocytes of neonatal Wistar rats were cultured for 12 days and exposed to hypoxia/re-oxygenation to establish a hypoxia/re-oxygenation model. Another set of cultured primary neonatal cortical neurocytes of rats were pretreated with 17-pt (an antagonist of EP1),then underwent hypoxia for 3 h,re-oxygenated for 21 h. MTT reagent was added 1 h before measuring the cell viability. Neuron apoptosis was determined by flow cytometry. The protein expression was examined by Western blotting. RESULTS:Compared to the control cells (only underwent hypoxia /re -oxygenation and without any pretreatment),the neurons pretreated with 17-pt and then underwent hypoxia/re-oxygenation showed significantly lower survival rate (P
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AIM: To observe the role of peroxysome proliferator activated receptor-?(PPAR-?) and the relationship of cyclooxygenase-2(COX-2) and PPAR-? in injury of cultured rat cortical neurons induced by hypoxia/reoxygenation.METHODS: Primary rat cortical neurons were cultured.Experiments include control group,hypoxia/ reoxygenation group and hypoxia/ reoxygenation with PPAR-? agonist group.Cell viability was surveyed by MTT assay.COX-2 protein expression was measured by Western blotting.RESULTS: Neuron viability raised dramatically in hypoxia/reoxygenation with PPAR-? agonist group,compared with hypoxia/reoxygenation group(P