Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 41
Filtrar
1.
Eur J Hosp Pharm ; 2024 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-38844328

RESUMO

OBJECTIVE: To identify and promote hospital pharmacy initiatives to improve the management of patients with hereditary angioedema (HAE) within the Spanish healthcare system. METHOD: A panel of experts comprising hospital pharmacists, an allergist and a nurse/member of the Spanish Hereditary Angioedema Association (Asociación Española de Angioedema Familiar) highlighted initiatives to improve care for patients with HAE after identifying, evaluating and prioritising them. Prioritisation was assessed based on the impact on patient care and the feasibility of their implementation on a scale of 1-5. RESULTS: Seven key areas of activity for the role of hospital pharmacists in the management of patients with HAE were identified: evaluation and selection of medicines; hospital pharmacy dispensation and telepharmacy; pharmacotherapy follow-up and telemedicine; coordination with other healthcare teams involved in the care of patients with HAE; patient health education and training; research on HAE; and continuous education and training of hospital pharmacy service personnel. Ten initiatives with a mean impact score of 5 and a mean feasibility score of ≥4.1 were considered as high-priority initiatives. Half of the initiatives belong to the area concerning patient education and training (50%), followed by care coordination initiatives (30%) and continuous education and training (20%). CONCLUSIONS: Ten high-priority initiatives for the management of patients with HAE were identified by a panel of experts. The implementation of such initiatives by the hospital pharmacy service should enhance the management of patients with HAE in the Spanish healthcare system.

2.
Orphanet J Rare Dis ; 19(1): 210, 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38773490

RESUMO

BACKGROUND: Hereditary angioedema due to C1 inhibitor deficiency (HAE-C1INH) is a genetic rare disease characterized by recurrent, transient and unpredictable episodes of cold, non-pruriginous oedema without associated urticaria. The characteristics of the disease have a considerable impact on the quality of life of patients. The aim of this study was to increase understanding of the patient journey of HAE in Spain. METHODS: A multidisciplinary committee of 16 HAE experts (allergy, immunology, emergency department, hospital pharmacy and nursing) and 3 representatives of the Spanish Hereditary Angioedema Patient Association (AEDAF) who were patients or caregivers participated in the study. A review of the publications on HAE treatment was performed. Semi-structured interviews were performed to HAE experts, patients, or caregivers. Three meetings with the experts, patients and caregivers were held to share, discuss, and validate data obtained from literature and interviews and to build the model. RESULTS: Throughout the project, the patient journey has been drawn up, dividing it into the stages of pre-diagnosis, diagnosis and treatment/follow-up. Some areas for improvement have been identified. Firstly, there is a need to enhance awareness and training on HAE among healthcare professionals, with a particular emphasis on primary care and emergency department personnel. Secondly, efforts should be made to minimize patient referral times to allergy/immunology specialists, ensuring timely access to appropriate care. Thirdly, it is crucial to encourage the study of the relatives of diagnosed patients to early identify potential cases. Fourthly, equitable access to self-administered treatments should be ensured, facilitated by systems that enable medication delivery at home and proper education and training for patients. Equitable access to long-term prophylactic treatment should also be prioritized for all patients in need. To standardize HAE management, the development of consensus guidelines that reduce variability in clinical practice is essential. Lastly, promoting research studies to enhance knowledge of the disease and align its treatment with new developments in the healthcare field should be encouraged. CONCLUSIONS: The knowledge of the patient journey in HAE allowed us to identify improvement areas with the final aim to optimize the disease management.


Assuntos
Angioedemas Hereditários , Humanos , Angioedemas Hereditários/diagnóstico , Angioedemas Hereditários/terapia , Espanha , Qualidade de Vida , Feminino , Masculino
3.
Artigo em Inglês | MEDLINE | ID: mdl-33804846

RESUMO

Although the consumption of fruits and vegetables is being promoted by different institutions as a key question of public health, their consumption is decreasing and their waste is increasing. To address this situation, we propose to include the consumer's perception of the quality (from a sensory point of view) of a fruit, in particular Valencian oranges, in the supplier's selection process by retailers. To do so, we use a combination of consumer and trained sensory panels and Analytic Hierarchy Process (AHP). This approach is completely novel in the literature. According to the expert panel, the most important criteria when evaluating the quality of an orange are fruity smell, juiciness, sweetness and acidity. These criteria are related to the freshness and taste of the oranges. Consumers found the methodology proposed useful and easy to develop. The application of the AHP methodology has helped to facilitate a participatory discussion among consumers on the concept of the quality of the oranges. The methodology proposed can help the agrifood sector in different ways up and down the supply chain. Specially, it can contribute to better meet consumer's demands, increasing the consumption of fruits and vegetables and reducing its waste.


Assuntos
Citrus sinensis , Comportamento do Consumidor , Frutas , Olfato , Paladar
4.
Nanomaterials (Basel) ; 11(1)2021 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-33429994

RESUMO

A suitable way to modify the electronic properties of graphene-while maintaining the exceptional properties associated with its two-dimensional (2D) nature-is its functionalisation. In particular, the incorporation of hydrogen isotopes in graphene is expected to modify its electronic properties leading to an energy gap opening, thereby rendering graphene promising for a widespread of applications. Hence, deuterium (D) adsorption on free-standing graphene was obtained by high-energy electron ionisation of D2 and ion irradiation of a nanoporous graphene (NPG) sample. This method allows one to reach nearly 50 at.% D upload in graphene, higher than that obtained by other deposition methods so far, towards low-defect and free-standing D-graphane. That evidence was deduced by X-ray photoelectron spectroscopy of the C 1s core level, showing clear evidence of the D-C sp3 bond, and Raman spectroscopy, pointing to remarkably clean and low-defect production of graphane. Moreover, ultraviolet photoelectron spectroscopy showed the opening of an energy gap in the valence band. Therefore, high-energy electron ionisation and ion irradiation is an outstanding method for obtaining low defect D-NPG with a high D upload, which is very promising for the fabrication of semiconducting graphane on large scale.

5.
Behav Brain Res ; 400: 113048, 2021 02 26.
Artigo em Inglês | MEDLINE | ID: mdl-33279639

RESUMO

Physical exercise has been associated with improved cognition and may even reduce memory deficits after brain injuries. The aims of this work were to: 1) assess whether voluntary physical exercise can reduce the deficits associated with traumatic brain injury (TBI) in two different components of episodic-like memory based on object recognition, temporal order memory ("when"), and object location memory ("where"); and 2) determine whether changes in levels of brain-derived neurotrophic factor (BDNF) in the hippocampus and prefrontal cortex, as well as alterations in hippocampal cytokines, insulin-like growth factor-1 (IGF-1) and vascular endothelial growth factor (VEGF), may influence the effects exercise has on either or both tasks. The rats were distributed into a sham group, a TBI group that remained sedentary (TBI-sed), and a TBI group that had access to a running wheel for a 25-day period from post-injury day 11 (TBI-exe). The rats were sacrificed after the "where" memory task, at post-injury day 37. Physical exercise restored the "when" and "where" memories, which had been impaired by the TBI, and increased the concentration of BDNF in the hippocampus, but not the prefrontal cortex. Neither TBI nor exercise were found to significantly affect hippocampal cytokines, IGF-1 or VEGF at this time post-injury. BDNF levels showed significant positive correlations with exercise, and with "when" (but not "where") memory. These results indicate that post-injury physical exercise restores "when" and "where" object recognition memory tasks after TBI, and that increased BDNF seems to be involved in this effect, particularly with regard to "when" memory.


Assuntos
Lesões Encefálicas Traumáticas , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Hipocampo , Transtornos da Memória , Memória Episódica , Condicionamento Físico Animal/fisiologia , Reconhecimento Psicológico/fisiologia , Memória Espacial/fisiologia , Animais , Lesões Encefálicas Traumáticas/complicações , Lesões Encefálicas Traumáticas/fisiopatologia , Lesões Encefálicas Traumáticas/reabilitação , Citocinas/metabolismo , Modelos Animais de Doenças , Terapia por Exercício , Hipocampo/imunologia , Hipocampo/metabolismo , Masculino , Transtornos da Memória/etiologia , Transtornos da Memória/fisiopatologia , Transtornos da Memória/reabilitação , Ratos Sprague-Dawley
6.
Front Pharmacol ; 11: 1331, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32982742

RESUMO

BACKGROUND: Low-cardiac output syndrome (LCOS) after cardiac surgery secondary to systemic hypoperfusion is associated with a higher incidence of renal and neurological damage. A range of effective therapies are available for LCOS. The beneficial systemic effects of levosimendan persist even after cardiac output is restored, which suggests an independent cardioprotective effect. METHODS: A double-blind clinical trial was conducted in patients with a confirmed diagnosis of LCOS randomized into two treatment groups (levosimendan vs. dobutamine). Monitoring of hemodynamic (cardiac index, systolic volume index, heart rate, mean arterial pressure, central venous pressure, central venous saturation); biochemical (e.g. creatinine, S100B protein, NT-proBNP, troponin I); and renal parameters was performed using acute kidney injury scale (AKI scale) and renal and brain ultrasound measurements [vascular resistance index (VRI)] at diagnosis and during the first 48 h. RESULTS: Significant differences were observed between groups in terms of cardiac index, systolic volume index, NT-proBNP, and kidney injury stage at diagnosis. In the levosimendan group, there were significant variations in AKI stage after 24 and 48 h. No significant differences were observed in the other parameters studied. CONCLUSION: Levosimendan showed a beneficial effect on renal function in LCOS patients after cardiac surgery that was independent from cardiac output and vascular tone. This effect is probably achieved by pharmacological postconditioning. CLINICAL TRIAL REGISTRATION: EUDRA CT, identifier 2014-001461-27. https://www.clinicaltrialsregister.eu/ctr-search/search?query=2014-001461-27.

7.
Qual Health Res ; 30(12): 1913-1923, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32564706

RESUMO

The prevention of falls is an integral part of the safety culture of health institutions with mandatory fall prevention programs set within health care facilities. Care providers are key in identifying the risks of falls and in implementing strategic actions to prevent them. With the aim to better understand practices of fall prevention, we conducted a synthesis of qualitative evidence on care providers' practices to prevent older people from falling in health care facilities. This synthesis is part of an integrative review of the role of care providers in fall prevention of adults aged 65 years and above. Primary studies were synthesized with the emerging core category of "a complex decision" and described by four emerging conditions that make that decision complex: (a) permanent threat of a fall, (b) continuous flow of information, (c) lack of control, and (d) ethical dilemmas and moral issues over the course of action. The present synthesis shows that before implementing preventive actions, care providers consider the conditions in which they are immersed, in this way situating their preventive actions in a clinical and a moral context.


Assuntos
Acidentes por Quedas , Instalações de Saúde , Acidentes por Quedas/prevenção & controle , Adulto , Idoso , Idoso de 80 Anos ou mais , Humanos , Princípios Morais
8.
Exp Neurol ; 326: 113178, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31926165

RESUMO

Physical exercise can reduce the cognitive decline associated with traumatic brain injury, yet little is known about the optimal administration schedules. Here, different protocols of voluntary wheel running were evaluated for their effects on object recognition memory (ORM), neuroprotection (NeuN+ cells), microglial reactivity (Iba1 staining) and neurogenesis (DCX+ cells) after controlled cortical impact injury (CCI). CCI-lesioned rats were divided into a sedentary group and three exercise groups: early discontinued exercise (3 weeks of exercise initiated 4 days post-injury, followed by 4 weeks in a sedentary state); delayed exercise (3 weeks of exercise initiated 4 weeks post-injury), and early continuous exercise (7 weeks of exercise starting 4 days post-injury). The deficits induced by CCI in a 24 h ORM test were reversed in the delayed exercise group and reduced in the early discontinued and early continuous groups. The early discontinued protocol also reduced the loss of NeuN+ cells in the hilus, while attenuated microglial reactivity was found in the dorsal hippocampus of both the early exercising groups. Running at the end of the experiment increased the number of DCX+ cells in the early continuous and delayed groups, and an inverted U-shaped relationship was found between the mean daily exercise time and the amount of neurogenesis. Thus, exercise had benefits on memory both when it was commenced soon and later after injury, although the neural mechanisms implicated differed. Accordingly, the effects of exercise on memory and neurogenesis appear to not only depend on the specific temporal schedule but also, they may be influenced by the amount of daily exercise.


Assuntos
Lesões Encefálicas Traumáticas/psicologia , Memória , Condicionamento Físico Animal/métodos , Condicionamento Físico Animal/psicologia , Reconhecimento Psicológico , Animais , Antígenos Nucleares/genética , Lesões Encefálicas Traumáticas/patologia , Proteínas de Ligação ao Cálcio/genética , Giro Denteado/patologia , Proteínas do Domínio Duplacortina , Proteína Duplacortina , Hipocampo/patologia , Masculino , Proteínas dos Microfilamentos/genética , Microglia/patologia , Proteínas Associadas aos Microtúbulos/genética , Proteínas Associadas aos Microtúbulos/metabolismo , Proteínas do Tecido Nervoso/genética , Neurogênese , Neuropeptídeos/genética , Neuropeptídeos/metabolismo , Neuroproteção , Desempenho Psicomotor , Ratos , Ratos Sprague-Dawley , Corrida , Fatores de Tempo
10.
J Adv Nurs ; 75(7): 1575-1584, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30816569

RESUMO

AIM: The gap between research and clinical practice leads to inconsistent decision-making and clinical audits are an effective way of improving the implementation of best practice. Our aim is to assess the effectiveness of a model that implements evidence-based recommendations for patient outcomes and healthcare quality. DESIGN: National quasi-experimental, multicentre, before and after study. METHODS: This study focuses on patients attending primary care and hospital care units and associated socio-healthcare services. It uses the Joanna Brigg's Institute Getting Research into Practice model, which improves processes by referring to prior baseline clinical audits. The variables are process and outcome criteria for pain, urinary incontinence, and fall prevention, with data collection at baseline and key points over 12 months drawn from clinical histories and records. Project funding was received from the Spanish Strategic Health Action in November 2014. DISCUSSION: The project results will provide knowledge on the effectiveness of the Getting Research into Practice model, to apply evidence-based recommendations for the detection and management of pain, urinary incontinence, and fall prevention. It will also establish whether using research results, based on clinical audits and situation analysis, is effective for implementing evidence-based recommendations and improving patients' health. IMPACT: This nationwide Spanish project aims to detect and prevent high-prevalence healthcare problems, namely pain in patients at any age and falls and urinary incontinence in people aged 65 and over. Tailoring clinical practice to evidence-based recommendations will reduce unjustified clinical variations in providing healthcare services. Clinical Trial ID: NCT03725774.


Assuntos
Qualidade da Assistência à Saúde , Acidentes por Quedas/prevenção & controle , Idoso , Auditoria Clínica , Tomada de Decisões , Humanos , Manejo da Dor/normas , Espanha , Incontinência Urinária/prevenção & controle
11.
Rev Sci Instrum ; 89(6): 065109, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29960557

RESUMO

Serious radiation damage due to the high energy neutron/gamma fluxes is expected for optical materials such as scintillators, windows, and lenses which will be part of the plasma diagnostics in future fusion devices. Radiation induced absorption represents a major concern for these components for which experimental validation under as near as possible reactor conditions becomes essential. A new experimental system has been developed at the CIEMAT Nayade 60Co gamma irradiation facility for in situ radiation induced optical absorption measurements, covering a spectral range between 370 and 730 nm. This setup consists in a rotating sample holder which allows one to collect incident light (reference signal) and transmitted light through the material to be tested as a function of irradiation dose. This is an advanced and robust system which overcomes the important experimental difficulties that radiation involves providing a valuable testing capability for transmission components and scintillators under realistic fusion conditions. A detailed description of the experimental arrangement, together with preliminary tests carried out for system validation is given in this paper.

12.
Aesthetic Plast Surg ; 42(5): 1421-1428, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29770862

RESUMO

INTRODUCTION: Anaplastic large cell lymphoma associated with breast implants is receiving increased attention. Most cases have been reported in Europe, North America (USA and Canada), Australia and New Zealand. Fewer cases have been reported in Latin America (including Mexico), Africa and Asia. METHODS: This report was delivered during our national plastic surgery meeting in Cancun in May 2017. Before the meeting, two participants reviewed the literature. The review was performed using the following information sources: PubMed, Embase, Cochrane, Fisterra, Google Scholar and LILACS, with entries from 1980 to August 2015 in several languages (English, Spanish, French and Portuguese). The results were revealed during the meeting to the other participants. The consensus was divided into two parts. The first part included an open-ended question regarding the incidence and prevalence of the problem. The second part included clinical scenarios with different items that were rated by the participants. After this activity, accordance among the responses was evaluated. RESULTS: Seven cases were reported during the meeting (3 from Mexico, 3 from Chile and 1 from Argentina). Fifty percent of the participants reported consulting with guidelines and clinical centers to help with potential cases. Most agreed that further studies must be done in cases of chronic seroma where the capsule plays an important role. DISCUSSION: A current debate exists about the incidence of this problem in Latin America because we did not report the same number of cases as Europe, Australia or North America. More studies are required to determine the differences among reports in Latin America. CONCLUSION: Most representatives agreed that further studies must be done. Concern is increasing, and the problem is known. Other factors involved may be considered, and the problem must not be ignored. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .


Assuntos
Implante Mamário/efeitos adversos , Implantes de Mama/efeitos adversos , Neoplasias da Mama/etiologia , Linfoma Anaplásico de Células Grandes/etiologia , Guias de Prática Clínica como Assunto , Adulto , Implante Mamário/métodos , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/patologia , Consenso , Feminino , Humanos , Incidência , América Latina/epidemiologia , Linfoma Anaplásico de Células Grandes/epidemiologia , Linfoma Anaplásico de Células Grandes/patologia , Pessoa de Meia-Idade , Medição de Risco
14.
BMC Pregnancy Childbirth ; 16: 78, 2016 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-27084092

RESUMO

BACKGROUND: The "Mackey Childbirth Satisfaction Rating Scale" (MCSRS) is a complete non-validated scale which includes the most important factors associated with maternal satisfaction. Our primary purpose was to describe the internal structure of the scale and validate the reliability and validity of concept of its Spanish version MCSRS-E. METHODS: The MCSRS was translated into Spanish, back-translated and adapted to the Spanish population. It was then administered following a pilot test with women who met the study participant requirements. The scale structure was obtained by performing an exploratory factorial analysis using a sample of 304 women. The structures obtained were tested by conducting a confirmatory factorial analysis using a sample of 159 women. To test the validity of concept, the structure factors were correlated with expectations prior to childbirth experiences. McDonald's omegas were calculated for each model to establish the reliability of each factor. The study was carried out at four University Hospitals; Alicante, Elche, Torrevieja and Vinalopo Salud of Elche. The inclusion criteria were women aged 18-45 years old who had just delivered a singleton live baby at 38-42 weeks through vaginal delivery. Women who had difficulty speaking and understanding Spanish were excluded. RESULTS: The process generated 5 different possible internal structures in a nested model more consistent with the theory than other internal structures of the MCSRS applied hitherto. All of them had good levels of validation and reliability. CONCLUSIONS: This nested model to explain internal structure of MCSRS-E can accommodate different clinical practice scenarios better than the other structures applied to date, and it is a flexible tool which can be used to identify the aspects that should be changed to improve maternal satisfaction and hence maternal health.


Assuntos
Parto Obstétrico/psicologia , Idioma , Parto/psicologia , Satisfação do Paciente , Escalas de Graduação Psiquiátrica/normas , Traduções , Adolescente , Adulto , Parto Obstétrico/métodos , Análise Fatorial , Feminino , Humanos , Pessoa de Meia-Idade , Projetos Piloto , Gravidez , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários , Adulto Jovem
15.
Scientifica (Cairo) ; 2016: 9151490, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27127685

RESUMO

The aim of this research is to evaluate whether posttraining systemic epinephrine is able to improve object recognition memory in rats with memory deficits produced by traumatic brain injury. Forty-nine two-month-old naïve male Wistar rats were submitted to surgical procedures to induce traumatic brain injury (TBI) or were sham-operated. Rats were trained in an object recognition task and, immediately after training, received an intraperitoneal injection of distilled water (Sham-Veh and TBI-Veh group) or 0.01 mg/kg epinephrine (TBI-Epi group) or no injection (TBI-0 and Sham-0 groups). Retention was tested 3 h and 24 h after acquisition. The results showed that brain injury produced severe memory deficits and that posttraining administration of epinephrine was able to reverse them. Systemic administration of distilled water also had an enhancing effect, but of a lower magnitude. These data indicate that posttraining epinephrine and, to a lesser extent, vehicle injection reduce memory deficits associated with TBI, probably through induction of a low-to-moderate emotional arousal.

16.
Nurse Educ Today ; 37: 103-7, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26718539

RESUMO

BACKGROUND: Writing a bachelor thesis (BT) is the last step to obtain a nursing degree. In order to perform an effective assessment of a nursing BT, certain reliable and valid tools are required. OBJECTIVES: To develop and validate a 3-rubric system (drafting process, dissertation, and viva) to assess final year nursing students' BT. DESIGN: A multi-disciplinary study of content validity and psychometric properties. The study was carried out between December 2014 and July 2015. SETTINGS: Nursing Degree at Universitat Jaume I. Spain. PARTICIPANTS: Eleven experts (9 nursing professors and 2 education professors from 6 different universities) took part in the development and content validity stages. Fifty-two theses presented during the 2014-2015 academic year were included by consecutive sampling of cases in order to study the psychometric properties. METHODS: First, a group of experts was created to validate the content of the assessment system based on three rubrics (drafting process, dissertation, and viva). Subsequently, a reliability and validity study of the rubrics was carried out on the 52 theses presented during the 2014-2015 academic year. RESULTS: The BT drafting process rubric has 8 criteria (S-CVI=0.93; α=0.837; ICC=0.614), the dissertation rubric has 7 criteria (S-CVI=0.9; α=0.893; ICC=0.74), and the viva rubric has 4 criteria (S-CVI=0.86; α=8.16; ICC=0.895). CONCLUSION: A nursing BT assessment system based on three rubrics (drafting process, dissertation, and viva) has been validated. This system may be transferred to other nursing degrees or degrees from other academic areas. It is necessary to continue with the validation process taking into account factors that may affect the results obtained.


Assuntos
Dissertações Acadêmicas como Assunto , Psicometria/métodos , Estudantes de Enfermagem , Estudos Transversais , Bacharelado em Enfermagem , Humanos , Reprodutibilidade dos Testes , Espanha
17.
Behav Neurosci ; 129(2): 149-59, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25730123

RESUMO

The consequences of traumatic brain injury (TBI) sustained during late adolescence (7 weeks old) on spontaneous object recognition memory and on anxiety-like behaviors in the elevated plus maze were tested in rats during adulthood. Testing took place at 2 different postinjury times, in separate groups: 3 and 6 weeks, when animals were 10 and 13 weeks old, respectively. The rats were either submitted to controlled cortical impact injury, an experimental model of focal TBI with contusion, or were sham-operated. TBI animals failed to remember the familiar object and had a significantly lower performance than sham-operated animals, indicating memory disruption, when the retention delay was 24 hr, but not when it was 3 hr. TBI did not have any significant effect on the main anxiety-related behaviors, but it reduced time in the central platform of the elevated plus maze. The effects of TBI on memory and on anxiety-like behaviors were similar at the 2 postinjury times. In both TBI and sham-operated groups, animals tested 6 weeks after surgery had lower anxiety-related indices than those tested at 3 weeks, an effect that might be indicative of reduced anxiety levels with increasing age. In summary, focal TBI with contusion sustained during late adolescence led to object recognition memory deficits in a 24-hr test during adulthood but did not have a major impact on anxiety-like behaviors. Memory deficits persisted for at least 6 weeks after injury, indicating that spontaneous modifications of these functional disturbances did not take place along this time span.


Assuntos
Ansiedade/fisiopatologia , Lesões Encefálicas/psicologia , Reconhecimento Psicológico/fisiologia , Fatores Etários , Animais , Ratos , Ratos Sprague-Dawley
18.
Food Technol Biotechnol ; 53(4): 397-406, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27904374

RESUMO

In the present work, we investigate how the degree of ripeness (low, low-medium, medium and medium-high) affects the physical and compositional changes, as well as antioxidant properties of pomegranate fruit (cv. Mollar de Elche). The skin, pellicle, seed and juice were analysed. The fruit mass increased and the fruit skin became reddish (higher a* and lower h*) as the fruit ripening progressed. The lowest concentrations of flavonoids and hydrolysable tannins were recorded in skin and pellicles at medium-high maturity stage, which explains the decrease in the total phenols and reducing power during ripening of pomegranate. On the contrary, the highest concentration of flavonoids (165 mg of quercetin equivalents per 100 mL of juice) was determined in the juice at the most advanced ripening stage, concomitant with the highest total phenols (1695 mg of gallic acid equivalents per 100 mL of juice). Higher DPPH scavenging activity and an increase in the reducing power of juice were also observed during ripening. The trend of the above-mentioned properties allowed describing the fruit development and maturity.

19.
J Neurotrauma ; 32(10): 739-51, 2015 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-25144903

RESUMO

The biochemical and cellular events that lead to secondary neural damage after traumatic brain injury (TBI) contribute to long-term disabilities, including memory deficits. There is a need to search for single and/or combined treatments aimed at reducing these TBI-related disfunctions. The effects of citicoline and of voluntary physical exercise in a running wheel (3 weeks), alone or in combination, on TBI-related short-term (3 h) and long-term (24 h) object recognition memory (ORM) deficits and on neurogenesis and neuroprotection were examined using a rodent model of TBI (controlled cortical impact injury). Citicoline improved memory deficits at the two times tested, while physical exercise only in the long-term test. Physical exercise had a clear neuroprotective effect as indicated by reduced interhemispheric differences in hippocampal formation and lateral ventricle volumes and in density of mature neurons in the hilus of the dentate gyrus and the perirhinal cortex. Physical exercise also increased cell proliferation and neurogenesis in the granular cell layer of the dentate gyrus. Some degree of neuroprotection of citicoline was suggested by reduced interhemispheric differences in the volume of the hippocampal formation. Contrary to what was expected, the effects of citicoline and physical exercise did not sum up. Further, a negative interference between both treatments was found in several behavioral and histological variables. The promising profiles of both treatments as therapeutic tools in TBI when applied singly underscore the need to perform further works looking for other combined treatment regimens that increase the benefit of each treatment alone.


Assuntos
Lesões Encefálicas/fisiopatologia , Lesões Encefálicas/terapia , Citidina Difosfato Colina/farmacologia , Atividade Motora/fisiologia , Neurogênese/fisiologia , Neuroproteção/fisiologia , Nootrópicos/farmacologia , Reconhecimento Psicológico/fisiologia , Animais , Comportamento Animal/efeitos dos fármacos , Comportamento Animal/fisiologia , Lesões Encefálicas/tratamento farmacológico , Terapia Combinada , Citidina Difosfato Colina/administração & dosagem , Modelos Animais de Doenças , Masculino , Memória de Longo Prazo/efeitos dos fármacos , Memória de Longo Prazo/fisiologia , Memória de Curto Prazo/efeitos dos fármacos , Memória de Curto Prazo/fisiologia , Neurogênese/efeitos dos fármacos , Neuroproteção/efeitos dos fármacos , Nootrópicos/administração & dosagem , Ratos , Ratos Sprague-Dawley , Reconhecimento Psicológico/efeitos dos fármacos
20.
Biol Open ; 3(10): 924-36, 2014 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-25217619

RESUMO

The acquisition of invasiveness is characteristic of tumor progression. Numerous genetic changes are associated with metastasis, but the mechanism by which a cell becomes invasive remains unclear. Expression of p85ß, a regulatory subunit of phosphoinositide-3-kinase, markedly increases in advanced carcinoma, but its mode of action is unknown. We postulated that p85ß might facilitate cell invasion. We show that p85ß localized at cell adhesions in complex with focal adhesion kinase and enhanced stability and maturation of cell adhesions. In addition, p85ß induced development at cell adhesions of an F-actin core that extended several microns into the cell z-axis resembling the skeleton of invadopodia. p85ß lead to F-actin polymerization at cell adhesions by recruiting active Cdc42/Rac at these structures. In accordance with p85ß function in invadopodium-like formation, p85ß levels increased in metastatic melanoma and p85ß depletion reduced invadopodium formation and invasion. These results show that p85ß enhances invasion by inducing cell adhesion development into invadopodia-like structures explaining the metastatic potential of tumors with increased p85ß levels.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA