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1.
Proc Natl Acad Sci U S A ; 115(31): E7341-E7350, 2018 07 31.
Artigo em Inglês | MEDLINE | ID: mdl-30030284

RESUMO

The 9 + 2 axoneme structure of the motile flagellum/cilium is an iconic, apparently symmetrical cellular structure. Recently, asymmetries along the length of motile flagella have been identified in a number of organisms, typically in the inner and outer dynein arms. Flagellum-beat waveforms are adapted for different functions. They may start either near the flagellar tip or near its base and may be symmetrical or asymmetrical. We hypothesized that proximal/distal asymmetry in the molecular composition of the axoneme may control the site of waveform initiation and the direction of waveform propagation. The unicellular eukaryotic pathogens Trypanosoma brucei and Leishmania mexicana often switch between tip-to-base and base-to-tip waveforms, making them ideal for analysis of this phenomenon. We show here that the proximal and distal portions of the flagellum contain distinct outer dynein arm docking-complex heterodimers. This proximal/distal asymmetry is produced and maintained through growth by a concentration gradient of the proximal docking complex, generated by intraflagellar transport. Furthermore, this asymmetry is involved in regulating whether a tip-to-base or base-to-tip beat occurs, which is linked to a calcium-dependent switch. Our data show that the mechanism for generating proximal/distal flagellar asymmetry can control waveform initiation and propagation direction.


Assuntos
Dineínas/química , Flagelos/fisiologia , Axonema/química , Flagelos/química , Multimerização Proteica
2.
J Gen Intern Med ; 34(2): 235-242, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30334182

RESUMO

BACKGROUND: Guidelines recommend fracture risk assessment in postmenopausal women aged 50-64, but the optimal method is unknown. OBJECTIVES: To compare discrimination and calibration of the Fracture Risk Assessment Tool (FRAX) and Garvan fracture risk calculator for predicting fractures in postmenopausal women aged 50-64 at baseline. DESIGN: Prospective observational study. PARTICIPANTS: Sixty-three thousand seven hundred twenty-three postmenopausal women aged 50-64 years participating in the Women's Health Initiative Observational Study and Clinical Trials. MAIN MEASURES: Incident hip fractures and major osteoporotic fractures (MOF) during 10-year follow-up. Calculated FRAX- and Garvan-predicted hip fracture and MOF fracture probabilities. KEY RESULTS: The observed 10-year hip fracture probability was 0.3% for women aged 50-54 years (n = 14,768), 0.6% for women aged 55-59 years (n = 22,442), and 1.1% for women aged 60-64 years (n = 25,513). At sensitivity thresholds ≥ 80%, specificity of both tools for detecting incident hip fracture during 10 years of follow-up was low: Garvan 30.6% (95% confidence interval [CI] 30.3-31.0%) and FRAX 43.1% (95% CI 42.7-43.5%). At maximal area under the receiver operating characteristic curve (AUC(c), 0.58 for Garvan, 0.65 for FRAX), sensitivity was 16.0% (95% CI 12.7-19.4%) for Garvan and 59.2% (95% CI 54.7-63.7%) for FRAX. At AUC(c) values, sensitivity was lower in African American and Hispanic women than among white women and lower in women aged 50-54 than those 60-64 years old. Observed hip fracture probabilities were similar to FRAX-predicted probabilities but greater than Garvan-predicted probabilities. At AUC(c) values (0.56 for both tools), sensitivity for identifying MOF was also low (range 26.7-46.8%). At AUC(c) values (0.55 for both tools), sensitivity for identifying any clinical fracture ranged from 18.1 to 34.0%. CONCLUSIONS: In postmenopausal women aged 50-64 years, the FRAX and Garvan fracture risk calculator discriminate poorly between women who do and do not experience fracture during 10-year follow-up. There is no useful threshold for either tool.


Assuntos
Fraturas Ósseas/diagnóstico , Fraturas Ósseas/epidemiologia , Pós-Menopausa/fisiologia , Saúde da Mulher/tendências , Fatores Etários , Feminino , Seguimentos , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Fraturas por Osteoporose/diagnóstico , Fraturas por Osteoporose/epidemiologia , Valor Preditivo dos Testes , Curva ROC , Fatores de Risco
3.
Curr Oncol Rep ; 21(9): 80, 2019 07 29.
Artigo em Inglês | MEDLINE | ID: mdl-31359189

RESUMO

PURPOSE OF REVIEW: Malnutrition is a common and under-recognized geriatric condition in older adults with cancer. This review describes the public health burden, malnutrition prevention, and the relationship among cancer cachexia, malnutrition, and sarcopenia. Finally, clinical practice recommendations on malnutrition and prevention are presented. RECENT FINDINGS: Advanced age and cancer stage, frailty, dementia, major depression, functional impairment, and physical performance are important risk factors for malnutrition in older adults with cancer. The Mini Nutrition Assessment (MNA), Malnutrition Universal Screening Tool (MUST), and Patient Generated Subjective Global Assessment (PG-SGA) are the most commonly used assessment tools in older adults with cancer. In addition, malnutrition is independently associated with poor overall survival and quality of life, longer hospital stays, greater hospital cost, and hospital readmission. Comprehensive malnutrition prevention is required for improving the nutrition status among older adults with cancer.


Assuntos
Desnutrição/etiologia , Neoplasias/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Fragilidade/etiologia , Fragilidade/metabolismo , Humanos , Desnutrição/metabolismo , Neoplasias/metabolismo , Qualidade de Vida , Fatores de Risco
4.
Support Care Cancer ; 26(5): 1561-1568, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29197959

RESUMO

PURPOSE AND INTRODUCTION: A growing number of cancer patients are older adults aged 65 years and older. Patients with cancer are at increased risk for developing osteoporosis, falls, and fractures. We sought to identify the incidence of fractures in older adults who underwent cancer care between January 2013 and December 2015. METHODS: A comprehensive geriatric assessment was performed, and bone densitometry was measured at baseline, with a 2-year follow-up. RESULTS: In this study, among 304 patients with gastrointestinal, urologic, breast, lung, and gynecologic cancers we evaluated, and who completed the bone density testing (n = 199), 80% had osteoporosis or low bone mass (osteopenia). There was a higher prevalence of osteoporosis in cancer patients (40 vs. 16%, p = 0.05) than in population studies. Vitamin D insufficiency (< 30 ng/ml) was identified in 49% of tested cases (n = 245). Risk factors for low bone mass or osteoporosis were advanced age (p = 0.05), malnutrition (p = 0.04), and frailty (p = 0.01). Over the following 2 years (median follow-up 18 months), there was an incidence of fractures of 110 per 1000 person-years, or 2.8 times higher than reported in individuals without cancer. Risk factors for fractures included advanced age (70-79 vs. 60-69 years, p = 0.05) and frailty (p = 0.03). CONCLUSION: Most older cancer patients studied have osteoporosis or low bone mass, resulting in an almost 3-fold increase in fracture risk as compared to epidemiologic studies. Bone health issues are commonly seen in older cancer patients, we recommend universal bone density testing. The initiation of antiresorptive treatment when findings are of osteopenia or osteoporosis will reduce the risk of fractures.


Assuntos
Fraturas Ósseas/etiologia , Avaliação Geriátrica/métodos , Neoplasias/complicações , Deficiência de Vitamina D/complicações , Idoso , Idoso de 80 Anos ou mais , Feminino , Hospitais , Humanos , Masculino , Neoplasias/patologia , Fatores de Risco , Texas
5.
Breast Cancer Res Treat ; 164(1): 57-67, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28417335

RESUMO

PURPOSE: As clinical studies have correlated RANK expression levels with survival in breast cancer, and that RANK signaling is dependent on its cognate ligand RANKL, we hypothesized that dual protein expression further stratifies the poor outcome in TNBC. METHODS: RANK mRNA and protein expression was evaluated in TNBC using genomic databases, cell lines and in a tissue microarray of curated primary tumor samples derived from 87 patients with TNBC. RANK expression was evaluated either by Mann-Whitney U test on log-normalized gene expression data or by Student's t test on FACS data. Analysis of RANK and RANKL immunostaining was calculated by H-score, and correlations to clinical factors performed using χ 2 or Fisher's exact test. Associations with RFS and OS were assessed using univariate and multivariate Cox proportional hazard models. Survival estimates were generated using the Kaplan-Meier method. RESULTS: In three distinct datasets spanning 684 samples, RANK mRNA expression was higher in primary tumors derived from TNBC patients than from those with other molecular subtypes (P < 0.01). Cell surface-localized RANK protein was consistently higher in TNBC cell lines (P = 0.037). In clinical samples, TNBC patients that expressed both RANK and RANKL proteins had significantly worse RFS (P = 0.0032) and OS (P = 0.004) than patients with RANK-positive, RANKL-negative tumors. RANKL was an independent, poor prognostic factor for RFS (P = 0.04) and OS (P = 0.01) in multivariate analysis in samples that expressed both RANK and RANKL. CONCLUSIONS: RANK and RANKL co-expression is associated with poor RFS and OS in patients with TNBC.


Assuntos
Prognóstico , Ligante RANK/genética , Receptor Ativador de Fator Nuclear kappa-B/genética , Neoplasias de Mama Triplo Negativas/genética , Adulto , Idoso , Biomarcadores Tumorais/genética , Intervalo Livre de Doença , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Neoplasias de Mama Triplo Negativas/classificação , Neoplasias de Mama Triplo Negativas/patologia
6.
J Clin Densitom ; 20(3): 379-388, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28739082

RESUMO

Osteoporosis is a silent disease until fractures occur, patient recognition is the greatest clinical challenge. Although more than 20 million women in the US are estimated to have established osteoporosis the majority are not appropriately identified. Bone densitometry is the current gold standard for diagnosis of osteoporosis; but may not be feasible or cost-effective to recommend for all postmenopausal women. Therefore, questionnaires incorporating risk factors have been developed to aid the clinician in identifying women with osteoporosis. We will review Qfracture, CAnadian Risk for Osteoporosis Calculator (CAROC), the Simple Calculated Osteoporosis Risk Index (SCORE), the Osteoporosis Risk Assessment Index (ORAI), the Osteoporotic Self-assessment Tool (OST), ABONE, and the United States Preventive Services Task Force recommendations.


Assuntos
Osteoporose/complicações , Osteoporose/diagnóstico , Fraturas por Osteoporose/etiologia , Inquéritos e Questionários , Algoritmos , Humanos , Medição de Risco/métodos , Fatores de Risco
7.
J Health Commun ; 22(10): 808-817, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28922062

RESUMO

Osteoporosis burden is significant in cancer survivors. Websites providing health information abound, but their development, quality, and source of information remain unclear. Our aim was to use a systematic and transparent approach to create an educational website on bone health, and to evaluate its potential to improve knowledge, self-management, and awareness in prostate cancer (PCa) and breast cancer (BCa) survivors. Guided by the Health Belief Model, we created a website using international standards and evaluated it in 10 PCa and 10 BCa survivors with self-administered questionnaire before, after, and 1 month after navigating the website. The mean scores on the knowledge questionnaire at baseline, postintervention and 1 month were, respectively, 5.1 (±2.0), 6.9 (±2.5), and 6.7 (±2.4), p < .008, in PCa and 3.4 (±2.7), 7.6 (±3.0), and 6.5 (±3.8), p  = .016, in BCa survivors. Acceptability ratings ranged from 60% to 100%. Participants found the website useful, helpful, and able to raise bone health awareness. Our website improved bone health knowledge in both PCa and BCa survivors. A systematic and transparent approach to the development of online educational websites could result in a tool capable of meeting the educational needs of targeted consumers. Cancer survivors could benefit from proven online educational tools.


Assuntos
Neoplasias da Mama/terapia , Promoção da Saúde/métodos , Internet , Osteoporose/prevenção & controle , Educação de Pacientes como Assunto , Neoplasias da Próstata/terapia , Sobreviventes/psicologia , Idoso , Feminino , Seguimentos , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Autocuidado/psicologia , Inquéritos e Questionários , Sobreviventes/estatística & dados numéricos
8.
J Natl Compr Canc Netw ; 14(11): 1357-1370, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27799507

RESUMO

Cancer is the leading cause of death in older adults aged 60 to 79 years. Older patients with good performance status are able to tolerate commonly used treatment modalities as well as younger patients, particularly when adequate supportive care is provided. For older patients who are able to tolerate curative treatment, options include surgery, radiation therapy (RT), chemotherapy, and targeted therapies. RT can be highly effective and well tolerated in carefully selected patients, and advanced age alone should not preclude the use of RT in older patients with cancer. Judicious application of advanced RT techniques that facilitate normal tissue sparing and reduce RT doses to organs at risk are important for all patients, and may help to assuage concerns about the risks of RT in older adults. These NCCN Guidelines Insights focus on the recent updates to the 2016 NCCN Guidelines for Older Adult Oncology specific to the use of RT in the management of older adults with cancer.


Assuntos
Oncologia , Idoso , Idoso de 80 Anos ou mais , Humanos
9.
Curr Oncol Rep ; 18(11): 65, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27613166

RESUMO

A significant proportion of cancer patients and survivors are age 65 and over. Older adults with cancer often have more complex medical and social needs than their younger counterparts. Geriatric medicine providers (GMPs) such as geriatricians, geriatric-trained advanced practice providers, and geriatric certified registered nurses have expertise in caring for older adults, managing complex medical situations, and optimizing function and independence for this population. GMPs are not routinely incorporated into cancer care for older adults; however, their particular skill set may add benefit at many points along the cancer care continuum. In this article, we review the role of geriatric assessment in the care of older cancer patients, highlight specific case scenarios in which GMPs may offer additional understanding and insight in the care of older adults with cancer, and discuss specific mechanisms for incorporating GMPs into oncology care.


Assuntos
Avaliação Geriátrica , Pessoal de Saúde/normas , Serviços de Saúde para Idosos/provisão & distribuição , Serviços de Saúde para Idosos/normas , Neoplasias/terapia , Adulto , Idoso , Serviços de Saúde para Idosos/tendências , Humanos
10.
Pediatr Radiol ; 44(2): 173-80, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24057195

RESUMO

BACKGROUND: Nephrogenic systemic fibrosis is a fibrosing disorder associated with exposure to gadolinium-based contrast agents in people with severely compromised renal function. OBJECTIVE: The purpose of this study was to determine the reported number of cases of nephrogenic systemic fibrosis in children using three distinct publicly available data sources. MATERIALS AND METHODS: We conducted systematic searches of the U.S. Food and Drug Administration Adverse Event Reporting System (FAERS), the International Center for Nephrogenic Systemic Fibrosis Research (ICNSFR) registry and published literature from January 1997 through September 2012. We contacted authors of individual published cases to obtain follow-up data. Data sets were cross-referenced to eliminate duplicate reporting. RESULTS: We identified 23 children with nephrogenic systemic fibrosis. Seventeen had documented exposure to gadolinium-based contrast agents. Six children had been reported in both the FAERS and the literature, four in the FAERS and the ICNSFR registry and five in all three data sources. CONCLUSION: Nephrogenic systemic fibrosis has been rarely reported in children. Although rules related to confidentiality limit the ability to reconcile reports, active pharmaco-vigilance using RADAR (Research on Adverse Drug events And Reports) methodology helped in establishing the number of individual pediatric cases within the three major data sources.


Assuntos
Sistemas de Notificação de Reações Adversas a Medicamentos/estatística & dados numéricos , Gadolínio/efeitos adversos , Imageamento por Ressonância Magnética/estatística & dados numéricos , Notificação de Abuso , Dermopatia Fibrosante Nefrogênica/induzido quimicamente , Dermopatia Fibrosante Nefrogênica/epidemiologia , Adolescente , Distribuição por Idade , Criança , Feminino , Humanos , Incidência , Masculino , Medição de Risco , Distribuição por Sexo , Estados Unidos/epidemiologia
11.
Periodontol 2000 ; 61(1): 177-94, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23240949

RESUMO

Menopause is a natural process that occurs in women's lives as part of normal aging. Many women go through the menopausal transition with few or no symptoms, while some have significant, or even disabling, symptoms. This manuscript reviews the physiologic processes and symptoms connected with menopause and the diseases associated with menopause, as well as how menopausal symptoms are managed.


Assuntos
Sistema Endócrino/fisiologia , Menopausa/fisiologia , Envelhecimento/fisiologia , Feminino , Hormônios Esteroides Gonadais/fisiologia , Terapia de Reposição Hormonal , Fogachos/fisiopatologia , Humanos , Osteoporose Pós-Menopausa/etiologia , Perimenopausa/fisiologia
12.
Am J Hosp Palliat Care ; 38(4): 320-325, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33030019

RESUMO

OBJECTIVE: Explore veteran-specific factors impacting the acceptance of palliative care services at a Veterans Health Administration hospital. METHODS: Prospective, focused one-on-one interviews were conducted with 18 inpatient veterans with an initial consult to receive palliative care services. Domains impacting reception of outpatient palliative care management were evaluated including knowledge deficit, emotional barriers, physical barriers, psychosocial barriers, and physical support. Themes and trends from interview responses were analyzed using a qualitative directed content analysis approach. RESULTS: The following themes were discovered to influence veteran participation in outpatient palliative care: Knowledge Deficit, Environmental Factors, Positive Patient Satisfaction, Openness to Technology, and Resiliency. Characteristics of veterans interviewed included an average age of 71 with an average distance from the hospital of 59 miles. CONCLUSION: The identification of factors impacting veteran access to palliative care will be used to guide interventions and improve receipt of services. Care of seriously ill veterans may be substantially improved by facilitating access to palliative care.


Assuntos
Enfermagem de Cuidados Paliativos na Terminalidade da Vida , Veteranos , Idoso , Hospitais , Humanos , Cuidados Paliativos , Estudos Prospectivos , Pesquisa Qualitativa , Estados Unidos , United States Department of Veterans Affairs
13.
Clin Nutr ; 40(3): 966-977, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-32665101

RESUMO

BACKGROUND & AIMS: In this study, we assessed the prevalence of malnutrition and its association with overall survival among patients with cancer aged 65 years and older. METHODS: In this retrospective cohort study, patients receiving cancer care underwent a comprehensive geriatric assessment (CGA). Malnutrition status was determined through the CGA. We used univariate and multivariable Cox regression survival analyses to assess the association between baseline malnutrition and survival. RESULTS: A total of 454 patients with cancers were included in the analysis. The median age was 78 years and men and women were equally represented. Forty-two percent (n = 190) were malnourished at baseline, and 33% died during the follow-up (range 0.2-51.1 month). Univariate analysis showed that malnutrition increased the risk of all-cause mortality in older patients with cancer (HR, 1.49; 95% CI, 1.08-2.05; p = 0.01). In the multivariate Cox regression model, malnutrition increased the risk of all-cause mortality (HR, 1.87; 95% CI, 1.10-3.17; p = 0.02) in older patients with solid tumors. However, malnutrition did not increase the risk of all-cause mortality for hematologic malignancies. CONCLUSIONS: In our study, we found that malnutrition was a risk factor for mortality in older cancer patients, especially in older patients with solid tumors. Prospective inter ventional studies are recommended.


Assuntos
Desnutrição/mortalidade , Neoplasias/mortalidade , Idoso , Idoso de 80 Anos ou mais , Causas de Morte , Feminino , Avaliação Geriátrica , Humanos , Masculino , Desnutrição/etiologia , Neoplasias/complicações , Avaliação Nutricional , Estado Nutricional , Prevalência , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Análise de Sobrevida
14.
Clin Cancer Res ; 15(11): 3850-5, 2009 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-19458059

RESUMO

PURPOSE: Serious adverse drug event (sADE) reporting to Institutional Review Boards (IRB) is essential to ensure pharmaceutical safety. However, the quality of these reports has not been studied. Safety reports are especially important for cancer drugs that receive accelerated Food and Drug Administration approval, like imatinib, as preapproval experience with these drugs is limited. We evaluated the quality, accuracy, and completeness of sADE reports submitted to an IRB. EXPERIMENTAL DESIGN: sADE reports submitted to an IRB from 14 clinical trials with imatinib were reviewed. Structured case report forms, containing detailed clinical data fields and a validated causality assessment instrument, were developed. Two forms were generated for each ADE, the first populated with data abstracted from the IRB reports, and the second populated with data from the corresponding clinical record. Completeness and causality assessments were evaluated for each of the two sources, and then compared. Accuracy (concordance between sources) was also assessed. RESULTS: Of 115 sADEs reported for 177 cancer patients to the IRB, overall completeness of adverse event descriptions was 2.4-fold greater for structured case report forms populated with information from the clinical record versus the corresponding forms from IRB reports (95.0% versus 40.3%, P < 0.05). Information supporting causality assessments was recorded 3.5-fold more often in primary data sources versus IRB adverse event descriptions (93% versus 26%, P < 0.05). Some key clinical information was discrepant between the two sources. CONCLUSIONS: The use of structured syndrome-specific case report forms could enhance the quality of reporting to IRBs, thereby improving the safety of pharmaceuticals administered to cancer patients.


Assuntos
Sistemas de Notificação de Reações Adversas a Medicamentos/estatística & dados numéricos , Sistemas de Notificação de Reações Adversas a Medicamentos/normas , Comitê de Profissionais , Sistemas de Notificação de Reações Adversas a Medicamentos/organização & administração , Antineoplásicos/efeitos adversos , Benzamidas , Ensaios Clínicos como Assunto , Revisão de Uso de Medicamentos/organização & administração , Revisão de Uso de Medicamentos/normas , Revisão de Uso de Medicamentos/estatística & dados numéricos , Fraturas Ósseas/induzido quimicamente , Insuficiência Cardíaca/induzido quimicamente , Humanos , Mesilato de Imatinib , Infecções/induzido quimicamente , Neoplasias/tratamento farmacológico , Piperazinas/efeitos adversos , Vigilância de Produtos Comercializados/normas , Vigilância de Produtos Comercializados/estatística & dados numéricos , Edema Pulmonar/induzido quimicamente , Pirimidinas/efeitos adversos , Fatores de Tempo
15.
BMJ Support Palliat Care ; 10(3): 363-368, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31239256

RESUMO

BACKGROUND: Malnutrition is common in older adults with cancer and is associated with adverse clinical outcomes. We assessed and compared the validity of three tools commonly used to screen for malnutrition: The Mini Nutritional Assessment (MNA), weight loss and body mass index (BMI). METHODS: In this retrospective study, we reviewed patients over age 65 with a diagnosis of cancer who were treated at the MD Anderson Cancer Center between 1 January 2013 and 31 March 2017. All patients in this study were evaluated by a trained geriatrician as part of a comprehensive geriatric assessment (CGA). Malnutrition was diagnosed by both CGA and clinical examination. The sensitivity, specificity and Cohen's κ of each tool was also compared with the clinical diagnosis. RESULTS: A total of 454 older patients with cancer who had malnutrition information available were included in the analyses. The median age was 78%, and 42% (n=190) were clinically diagnosed with malnutrition at baseline. When the MNA was performed, 105 out of 352 patients (30%) were malnourished, and 122 (35%) at risk of malnutrition. Weight loss >3 kg was seen in 183 out of 359 (51%) patients, and BMI <20 kg/m2 was found in 30 of the 454 (7%) patients. MNA had the highest validity (area under curve (AUC)=0.83) and reliability (κ=0.67), weight loss had moderate validity (AUC=0.73) and reliability (κ=0.46), while BMI had the lowest validity (AUC=0.55) and reliability (κ=0.55). CONCLUSIONS: For clinical practice, MNA should be incorporated for standard assessment/screening for these older patients with cancer.


Assuntos
Índice de Massa Corporal , Avaliação Geriátrica/métodos , Desnutrição/diagnóstico , Programas de Rastreamento/normas , Avaliação Nutricional , Idoso , Idoso de 80 Anos ou mais , Biomarcadores , Feminino , Humanos , Masculino , Desnutrição/etiologia , Programas de Rastreamento/métodos , Neoplasias/complicações , Reprodutibilidade dos Testes , Estudos Retrospectivos , Sensibilidade e Especificidade , Redução de Peso
16.
BMJ Support Palliat Care ; 10(1): 25-35, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30244203

RESUMO

OBJECTIVES: A growing number of patients with cancer are older adults. We sought to identify the predictors for overall survival (OS) in older adults with solid tumour and haematological malignancies between January 2013 and December 2016. METHODS: Retrospective cohort study. A comprehensive geriatric assessment was performed, with a median follow-up of 12.8 months. ANALYSIS: univariate and multivariate Cox proportional hazards regression analysis. RESULTS: In this study, among the 455 patients with last follow-up date or date of death, 152 (33.4%) died during the follow-up. The median follow-up is 12.8 months (range 0.2-51.1 months) and the median OS is 20.5 months (range 0.3-44.5 months). Among all older patients with cancer, predictors of OS included male gender, cancer stage, malnutrition, history of smoking, heavy alcohol use, frailty, weight loss, major depression, low body weight and nursing home residence. Traditional performance scores (Eastern Cooperative Oncology Group (ECOG) and Karnofsky Performance Scale (KPS)) were predictors of OS. Independent predictors included age >85 years and haematological malignancies. Among solid tumours (n=311) in addition to the above predictors, comorbidity, gait speed and vitamin D deficiency were associated with OS. CONCLUSIONS: We identified specific geriatric factors associated with OS in older patients with cancer, and comparable in predictive ability to traditional performance scores such as KPS and ECOG. Prospective studies will be necessary to confirm our findings.


Assuntos
Neoplasias/mortalidade , Idoso , Idoso de 80 Anos ou mais , Feminino , Avaliação Geriátrica , Humanos , Avaliação de Estado de Karnofsky , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Análise de Sobrevida
17.
Spine (Phila Pa 1976) ; 45(8): E430-E438, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-31770343

RESUMO

STUDY DESIGN: Retrospective cohort study of the Own the Bone database which is a fracture liaison service designed to improve recognition and treatment of osteoporosis. OBJECTIVE: To use the Own the Bone (OTB) database to 1) examine the specific demographics of patients presenting with a low-energy clinical vertebral fracture (VFX) and 2) compare demographic and fracture-specific risk factors between patients with clinical VFX versus patients with nonvertebral low-energy fracture (NVFX). SUMMARY OF BACKGROUND DATA: Large database studies have described risk factors for developing VFX. It is well described that a history of previous VFX portends an increased risk of future VFX. Few studies have reported cohorts from a fracture liaison service such as the OTB initiative. METHODS: 35,039 unique cases of fragility fracture occurred between 2009 and 2016 and were included in analysis. VFX accounted for 3395 (9.9%) of the presenting fractures at OTB enrollment. The demographics, lifestyle factors, medication use, and fracture-specific data for patients in the OTB registry with vertebral fractures were summarized and then statistically compared to those with nonvertebral fragility fractures. RESULTS: The majority of VFX patients were Caucasian, postmenopausal women (74.4%). There was an increased likelihood of presenting with a vertebral fracture in patients who sustained a previous VFX after the age of 50, while patients who sustained a prior nonvertebral fracture (NVFX) were more likely to present with a subsequent NVFX. After controlling for patients with a history of fracture after the age of 50, VFX patients (vs. NVFX) were more likely to be age 70-79, class 1 obesity, with a history of taking anti-osteoporotic prescription medications. CONCLUSIONS: Multiple factors were associated with a significantly increased risk of VFX compared with NVFX. Understanding the risk factors unique to fragility VFX is a critical component for targeting "at-risk" patients and preventing future osteoporosis-related fractures and their consequences. LEVEL OF EVIDENCE: 4.


Assuntos
Bases de Dados Factuais/tendências , Ortopedia/tendências , Osteoporose/epidemiologia , Fraturas por Osteoporose/epidemiologia , Fraturas da Coluna Vertebral/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Densidade Óssea/fisiologia , Vértebras Cervicais/lesões , Gerenciamento de Dados/métodos , Gerenciamento de Dados/tendências , Feminino , Humanos , Vértebras Lombares/lesões , Masculino , Pessoa de Meia-Idade , Osteoporose/diagnóstico , Fraturas por Osteoporose/diagnóstico , Sistema de Registros , Estudos Retrospectivos , Fatores de Risco , Fraturas da Coluna Vertebral/diagnóstico , Vértebras Torácicas/lesões , Estados Unidos/epidemiologia
18.
Lancet Oncol ; 9(12): 1166-72, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19038763

RESUMO

More than half of all serious adverse reactions are identified 7 or more years after a drug receives approval from the US Food and Drug Administration (FDA). In 2002, 9 months after the intravenous bisphosphonate zoledronic acid received regulatory approval for marketing, the FDA received reports of nine patients with cancer, who were treated with zoledronic acid, who unexpectedly developed osteonecrosis of the jaw. During the next 2 years, three oral surgeons described 104 patients with cancer with osteonecrosis of the jaw in the medical literature and identified intravenous bisphosphonate therapy as being common to the care of these patients. In subspecialty medical, radiology, and dental journals, case reports and case series described clinical features of osteonecrosis of the jaw in patients with cancer who were treated with bisphosphonates. Manufacturer-sponsored epidemiological studies reported the first estimates of the incidence of this toxic effect, ranging from 0.1% to 1.8%. By contrast, independent epidemiological efforts from clinicians and the International Myeloma Foundation reported incidence estimates between 5% and 10%. Between 2003 and 2005, warnings about the risks of bisphosphonate-associated osteonecrosis were disseminated by national regulatory agencies, the manufacturers of bisphosphonates, and the International Myeloma Foundation. From 2006, independent clinical recommendations for diagnosis, prevention, and treatment of this toxic effect have been disseminated by manufacturers, national regulatory authorities, the International Myeloma Foundation, and medical specialty organisations. Furthermore, independent efforts by pharmaceutical manufacturers, dental and medical professionals, a non-profit organisation (the International Myeloma Foundation), patients, and regulatory authorities has led to the rapid identification and dissemination of safety information for this serious adverse reaction. Better coordination of safety-related pharmacovigilance initiatives is now needed.


Assuntos
Antineoplásicos/efeitos adversos , Difosfonatos/efeitos adversos , Arcada Osseodentária/efeitos dos fármacos , Osteonecrose/induzido quimicamente , Administração Oral , Sistemas de Notificação de Reações Adversas a Medicamentos , Antineoplásicos/administração & dosagem , Conservadores da Densidade Óssea/efeitos adversos , Difosfonatos/administração & dosagem , Aprovação de Drogas , Feminino , Humanos , Imidazóis/efeitos adversos , Incidência , Infusões Intravenosas , Arcada Osseodentária/patologia , Masculino , Osteonecrose/epidemiologia , Osteonecrose/cirurgia , Pamidronato , Fatores Desencadeantes , Extração Dentária , Estados Unidos/epidemiologia , United States Food and Drug Administration , Ácido Zoledrônico
19.
J Geriatr Oncol ; 10(6): 874-883, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-30917937

RESUMO

BACKGROUND: Some studies have shown that malnutrition is associated with increased risk of mortality in older adults with cancer. However, evidence of its effect is limited and inconsistent. To assess the effect of malnutrition on overall survival in older adults with cancer, we performed a meta-analysis of available studies. METHODS: We systematically searched MEDLINE, EMBASE, Web of Science, CINAHL, and PsycINFO for observational studies that examined the association between malnutrition and risk of mortality in older adults with cancer (≥65 years). Malnutrition is defined according to assessment and screening tools in different studies. Older adults with malnutrition were compared with those with normal nutrition for overall survival. A random-effect model was fitted to estimate the summary relative risk (RR) and 95% confidence interval (CI). Between-studies heterogeneity was measured with the I2 statistic. RESULTS: Ten studies met the inclusion criteria, and a total of 4692 older adults with cancer were included in the meta-analysis. Heterogeneity existed among the different studies (I2 = 73.7%, p < 0.01). Malnutrition was significantly positively associated with increased risk of all-cause mortality (RR: 1.73; 95% CI: 1.23-2.41) compared with those with good nutrition status. A sensitivity analysis of 2773 older adults with cancer on the malnutrition assessed by Mini Nutrition Assessment (MNA), found that malnutrition is still associated with higher risk for all-cause mortality (RR = 2.13, 95% CI: 1.34-3.39). CONCLUSION: Our meta-analysis of observational studies found a significant effect of malnutrition on overall survival in older adults with cancer.


Assuntos
Desnutrição/mortalidade , Neoplasias/mortalidade , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Feminino , Geriatria/métodos , Humanos , Masculino , Desnutrição/diagnóstico , Desnutrição/terapia , Oncologia/métodos , Avaliação Nutricional , Apoio Nutricional/métodos , Estudos Observacionais como Assunto
20.
J Geriatr Oncol ; 10(5): 763-769, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30982752

RESUMO

BACKGROUND: >60% of patients with cancer are 65 years of age and older, and malnutrition is commonly encountered in older adults. OBJECTIVE: To assess the prevalence and factors associated with malnutrition in older patients with cancer. METHODS: In this cross-sectional study, patients with cancer underwent a comprehensive geriatric assessment (CGA). Malnutrition status was diagnosed by clinical assessment including screening tools such as Mini Nutrition Assessment (MNA), weight loss, and BMI. ANALYSIS: Descriptive statistics, chi-Square and logistic regression analysis were used to assess factors associated with malnutrition. RESULTS: A total of 454 patients with malnutrition information available were included in analysis. The median age was 78, range 65-96 years and comorbid diagnoses included dementia, mild cognitive impairment, frailty, and functional impairment. A total of 41.9% (n = 190) were diagnosed with malnutrition during the CGA. In the multivariable analysis, major depression and frailty were significantly associated with malnutrition. After controlling for potential confounders, patients who had malnutrition were 2.53-times more likely to have major depression (OR = 2.53, 95% CI: 1.23-5.24, p = 0.01) and 3.82 times more likely to have frailty (OR = 3.82, 95% CI: 1.35-10.84, p = 0.01) than those without malnutrition. CONCLUSIONS: Despite significant advances in cancer and supportive care, malnutrition remains a significant and highly prevalent public health problem among older patients with cancer. Identifying factors associated with risk for malnutrition in this patient population can help develop preventive strategies as part of care. Prospective studies are recommended.


Assuntos
Atividades Cotidianas , Transtorno Depressivo Maior/epidemiologia , Fragilidade/epidemiologia , Desnutrição/epidemiologia , Neoplasias/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Disfunção Cognitiva/epidemiologia , Comorbidade , Demência/epidemiologia , Feminino , Fragilidade/fisiopatologia , Avaliação Geriátrica , Humanos , Masculino , Avaliação Nutricional , Prevalência , Fatores de Risco , Deficiência de Vitamina D/epidemiologia , Velocidade de Caminhada
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