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1.
Int Wound J ; 21(3): e14816, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38445749

RESUMO

AIM: To gain a greater understanding of how compression therapy affects quality of life, this systematic review appraised existing published studies measuring the impact of compression therapy on health quality of life (HRQoL), and pain, among people with venous leg ulcers (VLU). METHOD: Five databases were searched, and two authors extracted data and appraised the quality of selected papers using the RevMan risk of bias tool. Due to heterogeneity in the types of compression and instruments used to evaluate HRQoL, meta-analysis was not appropriate; thus, a narrative synthesis of findings was undertaken. RESULTS: Ten studies were included, 9 RCTs and one before-after study. The studies employed nine different HRQoL tools to measure the impact of a variety of compression therapy systems, with or without an additional exercise programme, versus other compression systems or usual care, and the results are mixed. With the use of the Cardiff Cardiff Wound Impact Schedule, the SF-8 and the SF-12, study authors found no differences in QoL scores between the study groups. This is similar to one study using QUALYs (Iglesias et al., 2004). Conversely, for studies using EuroQol-5D, VEINES-QOL, SF-36 and CIVIQ-20 differences in QoL scores between the study groups were noted, in favour of the study intervention groups. Two further studies using QUALYs found results that favoured a two-layer cohesive compression bandage and the TLCCB group, respectively. Results for the five studies that assessed pain are also mixed, with one study finding no difference between study groups, one finding that pain increased over the study period and three studies finding that pain reduced in the intervention groups. All studies were assessed as being at risk of bias in one or more domains. CONCLUSION: Results were varied, reflecting uncertainty in determining the impact of compression therapy on quality of life and pain among people with a venous leg ulcer. The heterogeneity of the compression systems and the measures used to evaluate HRQoL make it a challenge to interpret the overall evidence. Further studies should strive for homogeneity in design, interventions and comparators to enhance both internal and external validity.


Assuntos
Bandagens Compressivas , Qualidade de Vida , Úlcera Varicosa , Humanos , Bases de Dados Factuais , Dor , Úlcera Varicosa/terapia
2.
J Cardiol ; 83(3): 184-190, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37684005

RESUMO

BACKGROUND: As the catheter-based device closure of the patent foramen ovale (PFO) is expanding, novel devices aim to address the limitations of first-generation occluders (e.g. bulk, erosion, dislodgment). The second-generation device from Encore Medical (Eagan, MN, USA) features an articulating frame structure which allows the device to better conform to atrial anatomies, has lower disc thickness and metal mass/surface area, and is fully retrievable at any point in the procedure. The aim of the study was to evaluate the feasibility and safety of a novel low-profile, fully retrievable, Encore PFO closure device in the animal model. METHODS: Six swine underwent implantation of the novel PFO occluder under fluoroscopic and intra-cardiac echocardiography guidance and survived for 140 days. Interim transthoracic echocardiography (TTE) was conducted on Day 29. Following terminal angiography and TTE at 140 days, the hearts were subjected to gross and histopathologic analysis. RESULTS: All animals were successfully implanted and survived for 140 days. Interim TTE revealed proper device retention with no blood flow across the septum or thrombus in any of the animals. X-ray and pathology results showed preserved implant integrity with no fractures, and complete integration of the devices into the septum with complete re-endothelialization and nearly complete coverage by a mature, relatively thin neoendocardium. No surface fibrin deposition or thrombosis was reported. CONCLUSIONS: In the standard porcine model, device retention and biocompatibility remained favorable following structural and functional device modifications exemplified by the second-generation PFO occluder from Encore Medical, including marked reduction of metal mass.


Assuntos
Forame Oval Patente , Dispositivo para Oclusão Septal , Suínos , Animais , Resultado do Tratamento , Cateterismo Cardíaco/métodos , Ecocardiografia , Forame Oval Patente/diagnóstico por imagem , Forame Oval Patente/cirurgia , Fluoroscopia
3.
J Tissue Viability ; 32(4): 618-626, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37423836

RESUMO

AIM: To determine the monetary costs identified in economic evaluations of treatment with compression bandages among adults with venous leg ulcers (VLU). METHOD: A scoping review of existing publications was conducted in February 2023. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used. RESULTS: Ten studies met the inclusion criteria. To place the costs of treatment into context, these are reported in conjunction with the healing rates. Three comparisons were made: 1.4 layer compression versus no compression (3 studies). One study reported that 4 layer compression was more expensive than usual care (£804.03 vs £681.04, respectively), while the 2 other studies reported the converse (£145 vs £162, respectively) and all costs (£116.87 vs £240.28 respectively). Within the three studies, the odds of healing were statistically significantly greater with 4 layer bandaging (OR: 2.20; 95% CI: 1.54-3.15; p = 0.001).; 2.4 layer compression versus other compression (6 studies). For the three studies reporting the mean costs per patient associated with treatment (bandages alone), over the treatment period, analysis identified a mean difference (MD) in costs for 4 layer vs comparator 1 (2 layer compression, short-stretch compression, 2 layer compression hosiery, 2 layer cohesive compression, 2 layer compression) of -41.60 (95% CI: 91.40 to 8.20; p = 0.10). The OR of healing for 4 layer compression vs comparator 1 (2 layer compression, short-stretch compression, 2 layer compression hosiery, 2 layer cohesive compression, 2 layer compression) is: 0.70 (95% CI: 0.57-0.85; p = 0.004). For 4 layer vs comparator 2 (2 layer compression) the MD is: 14.00 (95% CI: 53.66 to -25.66; p < 0.49). The OR of healing for 4 layer compression vs comparator 2 (2 layer compression) is: 3.26 (95% CI: 2.54-4.18; p < 0.00001). For comparator 1 (2 layer compression, short-stretch compression, 2 layer compression hosiery, 2 layer cohesive compression, 2 layer compression) vs comparator 2 (2 layer compression) the MD in costs is: 55.60 (95% CI: 95.26 to -15.94; p = 0.006). The OR of healing with Comparator 1 (2 layer compression, short-stretch compression, 2 layer compression hosiery, 2 layer cohesive compression, 2 layer compression) is: 5.03 (95% CI:4.10-6.17; p < 0.00001). Three studies presented the mean annual costs per patient associated with treatment (all costs). The MD is 172 (150-194; p = 0.401), indicating no statistically significant difference in costs between the groups. All studies showed faster healing rates in the 4 layer study groups. 3. Compression wrap versus inelastic bandage (one study). Compression wrap was less expensive than inelastic bandage (£201 vs £335, respectively) with more wounds healing in the compression wrap group (78.8%, n = 26/33; 69.7%, n = 23/33). CONCLUSION: The results for the analysis of costs varied across the included studies. As with the primary outcome, the results indicated that the costs of compression therapy are inconsistent. Given the methodological heterogeneity among studies, future studies in this area are needed and these should use specific methodological guidelines to generate high-quality health economic studies.


Assuntos
Úlcera da Perna , Úlcera Varicosa , Adulto , Humanos , Bandagens Compressivas , Úlcera Varicosa/terapia , Custos de Cuidados de Saúde , Pressão , Análise Custo-Benefício , Úlcera da Perna/terapia
4.
Int Wound J ; 20(2): 430-447, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35855678

RESUMO

This meta-review aimed to appraise and synthesise findings from existing systematic reviews that measured the impact of compression therapy on venous leg ulcers healing. We searched five databases to identify potential papers; three authors extracted data, and a fourth author adjudicated the findings. The AMSTAR-2 tool was used for quality appraisal and the certainty of the evidence was appraised using GRADEpro. Data analysis was undertaken using RevMan. We identified 12 systematic reviews published between 1997 and 2021. AMSTAR-2 assessment identified three as high quality, five as moderate quality, and four as low quality. Seven comparisons were reported, with a meta-analysis undertaken for five of these comparisons: compression vs no compression (risk ratio [RR]: 1.55; 95% confidence interval [CI] 1.34-1.78; P < .00001; moderate-certainty evidence); elastic compression vs inelastic compression (RR: 1.02; 95% CI: 0.96-1.08; P < .61 moderate-certainty evidence); four layer vs

Assuntos
Úlcera da Perna , Úlcera Varicosa , Humanos , Bandagens Compressivas , Úlcera Varicosa/terapia , Meias de Compressão , Cicatrização , Análise de Dados , Úlcera da Perna/terapia
5.
Head Neck ; 43(10): 3062-3075, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34235804

RESUMO

BACKGROUND: Little is documented regarding objective financial metrics and their impact on subjective financial toxicity in head and neck cancer (HNC) survivors. METHODS: In a cross-sectional analysis, 71 survivors with available claims data for HNC-specific out-of-pocket expenses (OOPE) completed a survey including patient-reported, subjective financial toxicity outcome tools: the Comprehensive Score for financial Toxicity (COST) and the Financial Distress Questionnaire (FDQ). RESULTS: Worse COST scores were significantly associated with lower earnings at survey administration (coefficient = 3.79; 95% CI 2.63-4.95; p < 0.001); loss of earnings after diagnosis (coefficient = 6.03; 95% CI 0.53-11.52; p = 0.032); and greater annual OOPE as a proportion of earnings [log10(Annual OOPE:Earnings at survey): coefficient = -5.66; 95% CI -10.28 to -1.04; p = 0.017]. Similar results were found with FDQ. CONCLUSION: Financial toxicity is associated with particular socioeconomic characteristics which, if understood, would assist the development of pre-treatment screening tools to detect at-risk individuals and intervene early in the HNC cancer survivorship trajectory.


Assuntos
Efeitos Psicossociais da Doença , Neoplasias de Cabeça e Pescoço , Estudos Transversais , Neoplasias de Cabeça e Pescoço/terapia , Gastos em Saúde , Humanos , Sobreviventes
6.
J Foot Ankle Surg ; 60(5): 1063-1067, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33896722

RESUMO

Blastomycosis is a rare condition affecting specific endemic areas in North America. Blastomycosis is characterized primarily as a pulmonary disease but can disseminate to affect other organ systems. Osteomyelitis due to disseminated blastomycosis is a rare condition with limited functional reconstructive options in a young adult. We present a rare case with prolonged antifungal therapy and staged reconstruction with a total talus prosthesis.


Assuntos
Blastomicose , Procedimentos Ortopédicos , Osteomielite , Tálus , Antifúngicos/uso terapêutico , Blastomicose/diagnóstico , Blastomicose/tratamento farmacológico , Blastomicose/cirurgia , Humanos , Osteomielite/tratamento farmacológico , Osteomielite/cirurgia , Próteses e Implantes , Tálus/cirurgia , Adulto Jovem
8.
Med Acupunct ; 30(5): 282-284, 2018 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-30377465

RESUMO

Background: Botulinum toxin type A injection is a common and safe procedure used for the treatment of overactive muscles through local injection. This toxin inhibits the release of acetylcholine in the neuromuscular junction. The benefits usually last only 3-6 months; thus, repeated injections are often required. The procedure, however, can be difficult if a patient's spasticity and pain prevents access to the muscles for injection or if a patient is anxious. Battlefield Acupuncture (BFA), a technique developed by Richard C. Niemtzow, MD, PhD, MPH, in 2001, is a form of auricular acupuncture using a very specific sequence of gold Aiguille semipermanente needles inserted into the ear. BFA can be very effective for reducing pain quickly, with few potential side-effects. Cases: BFA was performed prior to Botulinum toxin A injections on 2 patients who had either pain limitations or anxiety limitations during prior Botulinum toxin A injections. Case 1 was a 70-year-old male veteran with painful, right upper-extremity spasticity with hand contractures. Case 2 was a 69-year-old male veteran with spasticity who had anxiety related to his fear of needles. Results: Application of BFA prior to Botulinum toxin A injections enabled the 2 patients who either had pain limitations or anxiety limitations to tolerate the toxin injections much better. Conclusions: BFA is a safe and effective treatment option for rapid pain reduction, enabling Botulinum toxin A to be administered more easily to patients who have had pain or anxiety during prior injections.

9.
J Int Soc Sports Nutr ; 15(1): 27, 2018 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-29866199

RESUMO

BACKGROUND: Athletes commonly consume insufficient fluid and electrolytes just prior to, or during training and competition. Unlike non-athletes or athletes who do not engage in frequent rigorous and prolonged training sessions, "hard trainers" may require additional sodium and better benefit from a hydration plan tailored to their individual physiology. The purpose of this randomized cross-over study was to determine whether a hydration plan based off of an athlete's sweat rate and sodium loss improves anaerobic and neurocognitive performance during a moderate to hard training session as well as heart rate recovery from this session. METHODS: Collegiate athletes who were injury free and could exercise at ≥ 75% of their maximum heart rate for a minimum of 45 min were recruited for this randomized, cross-over study. After completing a questionnaire assessing hydration habits, participants were randomized either to a prescription hydration plan (PHP), which considered sweat rate and sodium loss or instructed to follow their normal ad libitum hydration habits (NHP) during training. Attention and awareness, as well as lower body anaerobic power (standing long jump) were assessed immediately before and after a moderate to hard training session of ≥ 45 min. Heart rate recovery was also measured. After a washout period of 7 days, the PHP group repeated the training bout with their normal hydration routine, while the NHP group were provided with a PHP plan and were assessed as previously described. RESULTS: Fifteen athletes from three different sports, aged 20 ± 0.85 years, participated in this study. Most participants reported feeling somewhat or very dehydrated after a typical training session. Compared to their NHP, participants following a PHP jumped 4.53 ± 3.80 in. farther, tracked moving objects 0.36 ± 0.60 m/second faster, and exhibited a faster heart rate recovery following a moderate to hard training session of 45-120 min in duration. CONCLUSION: A tailored hydration plan, based on an athlete's fluid and sodium loss has the potential to improve anaerobic power, attention and awareness, and heart rate recovery time.


Assuntos
Desempenho Atlético/psicologia , Ingestão de Líquidos , Sódio/análise , Sudorese , Água/fisiologia , Atletas , Atenção , Conscientização , Estudos Cross-Over , Feminino , Frequência Cardíaca , Humanos , Masculino , Testes de Estado Mental e Demência , Fenômenos Fisiológicos da Nutrição Esportiva , Suor , Equilíbrio Hidroeletrolítico , Adulto Jovem
10.
Ecol Evol ; 8(2): 1328-1338, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29375801

RESUMO

Unmanned aircraft systems (UAS) are relatively new technologies gaining popularity among wildlife biologists. As with any new tool in wildlife science, operating protocols must be developed through rigorous protocol testing. Few studies have been conducted that quantify the impacts UAS may have on unhabituated individuals in the wild using standard aerial survey protocols. We evaluated impacts of unmanned surveys by measuring UAS-induced behavioral responses during the nesting phase of lesser snow geese (Anser caerulescens caerulescens) in Wapusk National Park, Manitoba, Canada. We conducted surveys with a fixed-wing Trimble UX5 and monitored behavioral changes via discreet surveillance cameras at 25 nests. Days with UAS surveys resulted in decreased resting and increased nest maintenance, low scanning, high scanning, head-cocking and off-nest behaviors when compared to days without UAS surveys. In the group of birds flown over, head-cocking for overhead vigilance was rarely seen prior to launch or after landing (mean estimates 0.03% and 0.02%, respectively) but increased to 0.56% of the time when the aircraft was flying overhead suggesting that birds were able to detect the aircraft during flight. Neither UAS survey altitude nor launch distance alone in this study was strong predictors of nesting behaviors, although our flight altitudes (≥75 m above ground level) were much higher than previously published behavioral studies. Synthesis and applications: The diversity of UAS models makes generalizations on behavioral impacts difficult, and we caution that researchers should design UAS studies with knowledge that some minimal disturbance is likely to occur. We recommend flight designs take potential behavioral impacts into account by increasing survey altitude where data quality requirements permit. Such flight designs should consider a priori knowledge of focal species' behavioral characteristics. Research is needed to determine whether any such disturbance is a result of visual or auditory stimuli.

11.
J Aging Phys Act ; 25(3): 453-463, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28095099

RESUMO

This cluster-randomized trial was designed to determine the efficacy of a 6-month exercise-nutritional supplement program (ENP) on physical function and nutritional status for older adults and the feasibility of implementing this program in a senior living setting. Twenty senior-living facilities were randomized to either a 3 day per week group-based ENP led by a trained facility staff member or a health education program (SAP). Participants (N = 121) completed a short physical performance battery, 400-m walk, handgrip strength test, and mini-nutrition assessment. 25-hydroxyvitamin D [25(OH)D], insulin-like growth-factor 1 (IGF-1), and activity level were also measured. The ENP did not significantly improve physical function or nutritional status compared with the SAP. Compared with baseline, participants in the ENP engaged in 39 min less physical activity per week at 6 months. Several facility characteristics hindered implementation of the ENP. This study highlights the complexity of implementing an evidence-based program in a field setting.


Assuntos
Suplementos Nutricionais , Terapia por Exercício/métodos , Instituição de Longa Permanência para Idosos , Limitação da Mobilidade , Casas de Saúde , Aptidão Física/fisiologia , Idoso , Análise por Conglomerados , Feminino , Força da Mão/fisiologia , Humanos , Fator de Crescimento Insulin-Like I/análise , Masculino , Estado Nutricional , Análise e Desempenho de Tarefas , Resultado do Tratamento , Vitamina D/análogos & derivados , Vitamina D/análise
12.
Gerontologist ; 56(4): 669-76, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26035904

RESUMO

PURPOSE OF THE STUDY: Older adults are among the most challenging population groups to enroll into health-related research. This article describes two methods used by investigators to recruit mobility limited older adults residing at assisted living or senior housing (SH) facilities into a facility-led exercise-nutrition research study. DESIGN AND METHODS: Sedentary older adults were recruited from 42 different assisted living facilities (ALFs) or SH communities. Two different recruitment approaches were used: At 22 sites, investigators conducted heavily advertised informational sessions to recruit participants (Info only). At 20 locations, these sessions were preceded by attendance of a study team member at various activities offered by the facility over the preceding 2 weeks (activity attendance). Population reach, enrollment, personnel cost, and time required to recruit at least five participants at each facility was measured. Reasons for declining participation and withdrawal rate were also measured. RESULTS: Sixty percent more residents elected to be screened for eligibility when study personnel attended an activity offered by the facility. Activity attendance resulted in significantly less time, costs, and participant withdrawals compared with facilities with no activity attendance. IMPLICATIONS: Study team member attendance at activities offered by senior living facilities reduces cost and duration of recruitment and improves study retention. Interventions targeting this demographic are likely to benefit from deliberately building trust and familiarity among the resident population at senior living communities as part of the recruitment process.


Assuntos
Moradias Assistidas , Habitação para Idosos , Limitação da Mobilidade , Seleção de Pacientes , Participação Social , Idoso , Idoso de 80 Anos ou mais , Custos e Análise de Custo , Exercício Físico , Feminino , Humanos , Masculino , Ciências da Nutrição
13.
Astrophys J ; Volume 817(No 1)2016 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-32020923

RESUMO

The evolved, massive highly eccentric binary system, η Car, underwent a periastron passage in the summer of 2014. We obtained two coordinated X-ray observations with XMM-Newton and NuSTAR during the elevated X-ray flux state and just before the X-ray minimum flux state around this passage. These NuSTAR observations clearly detected X-ray emission associated with η Car extending up to ~50 keV for the first time. The NuSTAR spectrum above 10 keV can be fit with the bremsstrahlung tail from a kT ~6 keV plasma. This temperature is ΔkT ~2 keV higher than those measured from the iron K emission line complex, if the shocked gas is in collisional ionization equilibrium. This result may suggest that the companion star's pre-shock wind velocity is underestimated. The NuSTAR observation near the X-ray minimum state showed a gradual decline in the X-ray emission by 40% at energies above 5 keV in a day, the largest rate of change of the X-ray flux yet observed in individual η Car observations. The column density to the hardest emission component, N H ~1024 H cm-2, marked one of the highest values ever observed for η Car, strongly suggesting the increased obscuration of the wind-wind colliding X-ray emission by the thick primary stellar wind prior to superior conjunction. Neither observation detected the power-law component in the extremely hard band that INTEGRAL and Suzaku observed prior to 2011. The power-law source might have faded before these observations.

14.
Catheter Cardiovasc Interv ; 86(1): 173-81, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24130158

RESUMO

OBJECTIVES: Aimed to evaluate the feasibility of deployment and healing response of a novel transcatheter left atrial appendage (LAA) occlusion device in the canine model BACKGROUND: LAA occlusion is proposed to reduce the risk of stroke in atrial fibrillation patients METHODS: Transseptal puncture and device deployment was guided under fluoroscopy and transesophageal echocardiography (TEE) in five dogs. First, a distal cylindrical bulb occluder was released and secured to the appendage wall with hooks. Subsequently, a proximal sail was unfolded, covering the LAA ostium. Rotational angiography, TEE, and histology outcomes were assessed 30 days following implantation RESULTS: Pre-operative TEE revealed the mean diameter of the LAA ostium to be 17.2 ± 1.6 mm with a depth of 18.5 ± 1.7 mm. The landing zone for the distal bulb was measured to be 12.8 ± 1.3 mm. The mean bulb diameter at implant was 16.8 ± 1.8 mm. Post-operative TEE showed adequate positioning and successful LAA occlusion with all implanted devices. Pericardial effusion requiring pericardiocentesis was seen in one animal following device implantation. At 30 days, TEE revealed full occlusion of all LAA ostia with the exception of a minimal peri-device leak (<3 mm) observed in one animal. No pericardial effusion or device-related thrombus formation was found at termination. Histological analysis confirmed circumferential occlusion of all appendages and complete neointimal coverage on the luminal aspect of the occluder CONCLUSION: The percutaneous delivery of a novel self-positioning LAA occlusion device is feasible and safe in a canine model. At 30 days, all devices displayed complete healing and occlusion of the LAA without any device related adverse events.


Assuntos
Apêndice Atrial/cirurgia , Fibrilação Atrial/cirurgia , Procedimentos Cirúrgicos Cardíacos/instrumentação , Acidente Vascular Cerebral/prevenção & controle , Suturas , Animais , Fibrilação Atrial/complicações , Fibrilação Atrial/diagnóstico , Cateterismo Cardíaco , Modelos Animais de Doenças , Cães , Ecocardiografia Transesofagiana , Fluoroscopia , Ligadura/instrumentação , Acidente Vascular Cerebral/etiologia
16.
Curr Phys Med Rehabil Rep ; 2(4): 273-289, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25411651

RESUMO

It has been estimated that more than 1.6 million individuals in the United States have undergone at least one amputation. The literature abounds with research of the classifications of such injuries, their etiologies, epidemiologies, treatment regimens, average age of onset (average age of amputation), and much more. The subpopulation that is often overlooked in these evaluations, however, is comprised of individuals who have suffered multiple limb loss. The challenges faced by those with single-limb loss are amplified for those with multiple limb loss. Pain, lifestyle adjustment, and quality of life return are just a few key areas of concern in this population. Along with amputations resulting from trauma, many individuals with multiple amputations have endured them as a result of dysvascular disease. Over recent years, amputations as a result of dysvascular disease have risen to comprise more than 80 % of new amputations occurring in the United States every year. This compares to just 54 % of total current prevalence. Those with diabetes comorbid with dysvascular disease make up 74 % of those with dysvascular amputations, and these individuals with diabetes comorbid with dysvascular disease have a 55 % chance of enduring an amputation of their contralateral limb within 2-3 years of their initial amputation. With the well-documented aging of the nation's population and the similarly skyrocketing prevalence of dysvascular disease and diabetes, it can be expected that the number of individuals with multiple limb loss will continue to increase in the United States. This article outlines the recommended measures of care for this particular subpopulation, including pain management, behavioral health considerations, strategies for rehabilitation for various levels and variations of multiple limb loss, and the assistive technology and adaptive equipment that might be available for these individuals to best enable them to continue healthy, fulfilling lives following amputation.

17.
Mol Aspects Med ; 38: 1-53, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24813475

RESUMO

Cardiovascular disease remains the leading cause of morbidity and mortality in the United States and other developed countries, and is fast growing in developing countries, particularly as life expectancy in all parts of the world increases. Current recommendations for the prevention of cardiovascular disease issued jointly from the American Academy of Cardiology and American Heart Association emphasize that lifestyle modification should be incorporated into any treatment plan, including those on statin drugs. However, there is a dearth of data on the interaction between diet and statins with respect to additive, complementary or antagonistic effects. This review collates the available data on the interaction of statins and dietary patterns, cognition, genetics and individual nutrients, including vitamin D, niacin, omega-3 fatty acids, fiber, phytochemicals (polyphenols and stanols) and alcohol. Of note, although the available data is summarized, the scope is limited, conflicting and disparate. In some cases it is likely there is unrecognized synergism. Virtually no data are available describing the interactions of statins with dietary components or dietary pattern in subgroups of the population, particularly those who may benefit most were positive effects identified. Hence, it is virtually impossible to draw any firm conclusions at this time. Nevertheless, this area is important because were the effects of statins and diet additive or synergistic harnessing the effect could potentially lead to the use of a lower intensity statin or dose.


Assuntos
Interações Alimento-Droga , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacocinética , Doenças Cardiovasculares/prevenção & controle , Cognição/efeitos dos fármacos , Dieta , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Estados Unidos
18.
J Nutr Gerontol Geriatr ; 31(3): 176-89, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22888837

RESUMO

In our efforts to understand how various dietary factors can influence the risk and progression of chronic disease, much recent research has focused on phytochemicals. Phytochemicals are defined as nonessential nutrients found in plant-based food, many of which have been established as bioactive and thus may affect human health. The largest group of phytochemicals is the polyphenols, comprised principally of the flavonoids, which are characterized chemically by two benzene rings joined by a linear carbon chain. Evidence from observational studies indicates that regular consumption of foods containing flavonoids may reduce the risk several chronic conditions, including neurodegenerative diseases, atherosclerosis, and certain forms of cancer. These results have generated considerable interest in flavonoids, although much basic information about their nutrient characteristics in humans remains limited, e.g., their bioavailability and metabolism, interactions with other dietary factors, mechanisms of action, and intakes associated with specific health outcomes. Although flavonoids are commonly defined as dietary antioxidants and their putative health benefits commonly attributed to this mechanism, it now appears their principal actions are mediated in vivo via other biochemical and molecular pathways.


Assuntos
Doença Crônica/prevenção & controle , Dieta , Flavonoides/uso terapêutico , Plantas Comestíveis/química , Flavonoides/efeitos adversos , Flavonoides/química , Flavonoides/farmacologia , Humanos , Extratos Vegetais/efeitos adversos , Extratos Vegetais/química , Extratos Vegetais/farmacologia
19.
J Mol Endocrinol ; 47(1): 109-117, 2011 08.
Artigo em Inglês | MEDLINE | ID: mdl-21830321

RESUMO

Estrogen and testosterone are thought to modulate coronary heart disease (CHD) risk. To examine how these hormones affect human macrophage cholesterol transport, a key factor in atherogenesis, we obtained monocytes from healthy male and postmenopausal female donors (age 50­70 years). Cells were allowed to differentiate in autologous serum. Human monocyte-derived macrophages (HMDMs) were exposed to estrogen, testosterone, or vehicle, during differentiation.Cells were cholesterol enriched with oxidized low-density lipoprotein (oxLDL) in the presence of treatment. Cell cholesterol mass, efflux, and the expression of proteins involved in HMDM cholesterol transport were examined.Estrogen significantly reduced cholesteryl ester (CE) content in both female and male HMDMs while having no measurable effect on cholesterol efflux. Testosterone did not affect cholesterol content or efflux. Both hormones significantly but modestly affected the gene expression of several proteins involved in HMDM transport, yet these effects did not translate into significant changes in protein expression. In THP-1 macrophages, the effect of estrogen on CE content was more potent in unloaded macrophages and was estrogen receptor dependent. A trend for a reduction in nonoxLDL uptake by estrogen was observed and was also found to be dependent upon estrogen receptor activation. Our data indicate that estrogen, but not testosterone, reduces CE accumulation in HMDMs obtained from a CHD age relevant population, independent of changes in the expression of proteins important to macrophage cholesterol transport. In THP-1 cells, this effect is reduced in the presence of oxLDL, indicating that a pro-atherogenic lipoprotein milieu is an important variable in sex hormone modulation of CHD.


Assuntos
Colesterol/metabolismo , Estradiol/farmacologia , Lipoproteínas/metabolismo , Macrófagos/metabolismo , Idoso , Células Cultivadas , Ésteres do Colesterol/metabolismo , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Feminino , Perfilação da Expressão Gênica , Humanos , Lipoproteínas LDL/farmacologia , Macrófagos/efeitos dos fármacos , Masculino , Pessoa de Meia-Idade , Pós-Menopausa/sangue , Testosterona/farmacologia , Transcrição Gênica/efeitos dos fármacos , Triglicerídeos/sangue
20.
J Endocrinol ; 206(2): 217-24, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20484148

RESUMO

Inflammation plays a central role in the development and progression of coronary heart disease (CHD). The sex hormones estrogen and testosterone have been shown to modify the inflammatory response by influencing cytokine expression in human macrophages obtained from younger individuals. The effect of these hormones on the expression of proinflammatory markers in macrophages obtained from a CHD age-relevant population has not been studied. Human monocyte-derived macrophages (HMDMs) were obtained from healthy normolipidemic men and postmenopausal women (age 50-70 years), and cultured in autologous serum along with both physiological and supraphysiological concentrations of estrogen or testosterone. HMDMs were stimulated with oxidized low-density lipoproteins, and the expression of the cytokines tumor necrosis factor alpha (TNF-alpha or TNF), interleukin (IL)6, and IL-1 beta (IL1B) and of the acute-phase protein C-reactive protein (CRP) was measured. Both physiological and supraphysiological concentrations of testosterone reduced the expression and secretion of TNF-alpha and reduced the expression of IL-1 beta, but did not affect the expression of IL6 or CRP. Estrogen did not modify the expression of TNF-alpha, IL6, and IL-1 beta. Estrogen caused a variable response in CRP expression that was positively associated with the plasma small dense LDL-cholesterol concentration of the donors. There were no gender differences in any of the observed effects. Our results indicate that testosterone may exert anti-inflammatory effects by reducing macrophage TNF-alpha expression, while the effects of estrogen on macrophage CRP expression may depend upon the extracellular lipid environment.


Assuntos
Proteína C-Reativa/metabolismo , Citocinas/metabolismo , Estrogênios/metabolismo , Macrófagos/metabolismo , Pós-Menopausa/metabolismo , Testosterona/metabolismo , Idoso , LDL-Colesterol/sangue , Doença das Coronárias/metabolismo , Estradiol/metabolismo , Feminino , Humanos , Inflamação/metabolismo , Interleucina-1beta/metabolismo , Interleucina-6/metabolismo , Masculino , Pessoa de Meia-Idade , Monócitos , Pós-Menopausa/sangue , Valores de Referência , Fator de Necrose Tumoral alfa/metabolismo
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