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San Jose, Costa Rica

Romero-Arenas S.,San Antonio de Murcia Catholic University | Blazevich A.J.,Edith Cowan University | Martinez-Pascual M.,Santa Lucia University | Perez-Gomez J.,University of Extremadura | And 3 more authors.
Experimental Gerontology | Year: 2013

The aim of this study was to determine the efficacy of a program of high-resistance circuit (HRC) training, and to compare the effects of HRC to traditional heavy strength (TS) training on strength, muscle size, body composition and measures of cardiovascular fitness in a healthy elderly population. Thirty-seven healthy men and women (61.6. ±. 5.3. years) were randomly assigned to HRC (n. =. 16), TS (n. =. 14), or a control group (CG, n. =. 7). Training consisted of weight lifting twice a week for 12. weeks. Before and after the training, isokinetic peak torque in the upper and lower body, and body composition (dual X-ray absorptiometry) were determined. In addition, cardiovascular parameters were evaluated during an incremental treadmill test. Both HRC and TS groups showed significant increases in isokinetic strength (p<. 0.001), and the increase was significantly greater in the experimental groups than in CG (p<. 0.03). There were significant increases in lean mass (HRC, p<. 0.001; TS, p=. 0.025) and bone mineral density (HRC, p=. 0.025; TS, p=. 0.018) in the experimental groups. Only HRC showed a significant decrease in fat mass (p=. 0.011); this decrease was significantly greater in HRC than in CG (p=. 0.039). There were significant improvements in walking economy in the HRC group (p<. 0.049), although there were no statistical differences between groups. There were no changes in any variables in CG. Hence, HRC training was as effective as TS for improving isokinetic strength, bone mineral density and lean mass. Only HRC training elicited adaptations in the cardiovascular system and a decrease in fat mass. © 2013 Elsevier Inc. Source

Molina Nunez M.,Santa Lucia University
Blood Purification | Year: 2015

Background and Aims: A bicarbonate dialysate acidified with citrate (CD) has been reported to have local anticoagulant effect and improves biocompatibility. This study examines the effect of CD on dialysis efficiency, coagulation, acid-base status, electrolytes, and inflammation in patients in on-line hemodiafiltration (OL-HDF). Methods: 35 patients in OL-HDF were enrolled in a prospective, cross-over study for a 24-week period and two phases alternating CD and acetate dialysate fluid (AD). Parameters on study were predialysis levels of bicarbonate and ionic calcium, reactive C Protein (CRP), and beta-2 microglobulin (B2MG) and postdialysis levels of activated tromboplastine time, bicarbonate, and ionized calcium. Results: No significant differences in coagulation parameters, pH, and predialysis bicarbonate were found. The postdialysis bicarbonate and postdialysis calcium were lower with CD. Dialysis efficiency was greater with CD. Regarding inflammatory parameters, both CRP and B2MG were lower using CD. Conclusion: The use of CD is safe and effective in OL-HDF, and it improves dialysis efficacy, postdialysis alkalosis, and inflammation. © 2015 S. Karger AG, Basel Copyright © 2015, S. Karger AG. All rights reserved. Source

Popovic M.,University of Murcia | Gimenez de Bejar V.,Santa Lucia University | Popovic N.,University of Murcia | Caballero-Bleda M.,University of Murcia
Neurobiology of Learning and Memory | Year: 2015

The effect of scopolamine on the consolidation and forgetting of emotional memory has not been completely elucidated yet. The aim of the present study was to investigate the time course of scopolamine effect on consolidation and forgetting of passive avoidance response. In a first experiment of the present study, we tested the effect of scopolamine (1. mg/kg, i.p., immediately after acquisition), on 24. h and 48. h retention performance of the step-through passive avoidance task, in adult male Wistar rats. On the 24. h retested trial, the latency of the passive avoidance response was significantly lower, while on the 48. h retested trial it was significantly higher in scopolamine-than in the saline-treated group. In a second experiment, we assessed the 24. h time course of scopolamine (1. mg/kg) effect on memory consolidation in passive avoidance task. We found that scopolamine administration only within the first six and half hours after acquisition improved memory consolidation in 48. h retention performance. Finally, a third experiment was performed on the saline- and scopolamine-treated rats (given immediately after acquisition) that on the 48. h retention test did not step through into the dark compartment during the cut-off time. These animals were retested weekly for up to first three months, and after that, every three months until the end of experiment (i.e., 15. months after acquisition). The passive avoidance response in the saline treated group lasted up to 6. weeks after acquisition, while in the scopolamine treated group 50% of animals conserved the initial level of passive avoidance response until the experiment end point. In conclusion, the present data suggest that (1) improving or impairment effect of scopolamine given in post-training periods depends on delay of retention trial, (2) memory consolidation process could be modify by scopolamine within first six and half hours after training and (3) scopolamine could delay forgetting of emotional memory. © 2014 Elsevier Inc. Source

Conesa-Zamora P.,Santa Lucia University | Conesa-Zamora P.,University of Murcia
Gynecologic Oncology | Year: 2013

Despite the availability of prophylactic vaccines against human papillomavirus (HPV), cervical cancer (CC) is still a major problem globally. It is the cancer with the second highest incidence and the third highest mortality in women worldwide, but, in less developed countries, it is an even greater problem being the second most common cause of cancer death. Although HPV infection is one of the most common sexually transmitted diseases, and high-risk HPV16 is the most frequent genotype involved, only a small number of HPV-infected women develop high-grade squamous intraepithelial lesions whereas, in the remainder of the women, the virus disappears spontaneously. There is a lot of evidence to support the view that host-dependent immunologic status and HPV-induced immune evasion are responsible for persistent HPV infection and subsequent development of cervical neoplasia. Therefore, the role of the immune system, not only in viral clearance but also in tumor antigen recognition, is particularly relevant in the case of cervical carcinogenesis. A better understanding of these processes would help in the development of therapeutic vaccines. This review aims to explain which immune cells and molecules are involved in the process of viral and tumor recognition, how their failure can lead to cervical carcinoma and what are the main therapeutic strategies so far tested in preclinical models and clinical trials to stimulate the immune system in cervical carcinoma. © 2013 Elsevier Inc. Source

Sanchis J.,University of Valencia | Garcia-Blas S.,University of Valencia | Mainar L.,University of Valencia | Mollar A.,University of Valencia | And 8 more authors.
Heart | Year: 2014

Objectives: High-sensitivity troponin (hs-cTn) is substituting conventional cTn for evaluation of chest pain. Our aim was to assess the impact on patient management and outcome.Methods: A total of 1372 consecutive patients presenting at the emergency department with non-STelevation acute chest pain were divided into two periods according to the cTn assay used, conventional (n=699, March 2008 to July 2010) or hs-cTn (n=673, November 2010 to March 2013). Management policies were similar and according to guidelines. The primary endpoint was major adverse cardiac events (MACE) at 6 months (death, myocardial infarction, readmission by unstable angina or postdischarge revascularisation).Results: There were minor differences in baseline characteristics. In the hs-cTn period, more patients elevated cTn (73% vs 37%, p=0.0001) leading to more coronary angiograms (77% vs 55%, p=0.0001) and revascularisations (45% vs 31%, p=0.0001); conversely, fewer patients were initially assigned to exercise testing (14% vs 36%, p=0.0001) and, therefore, discharged early after a negative result (7% vs 22%, p=0.0001). At 6 months, 135 patients suffered MACE, including 54 deaths. After adjusting for a Propensity Score, hs-cTn use was not significantly associated with MACE (HR=0.99; 95% CI 0.70 to 1.41; p=0.98) or mortality (HR=1.02; 95% CI 0.59 to 1.77; p=0.95), though the risk of longer hospitalisation stay increased at the index episode (OR=1.35, 95% CI 1.07 to 1.71, p=0.02).Conclusions: hs-cTn simplified chest pain triage on avoiding a more complex evaluation with non-invasive tests in the chest pain unit, but prompted longer hospitalisations and more invasive procedures without impacting on the 6-month outcomes. Source

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