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1.
Am J Phys Med Rehabil ; 103(3S Suppl 1): S62-S71, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38364033

RESUMO

OBJECTIVE: The aim of the study is to identify and appraise current evidence for rehabilitation interventions in head and neck cancer. DESIGN: A previously published scoping review spanning 1990 through April 2017 was updated through January 11, 2023 and narrowed to include only interventional studies (Arch Phys Med Rehabil. 2019;100(12):2381-2388). Included studies had a majority head and neck cancer population and rehabilitation-specific interventions. Pairs of authors extracted data and evaluated study quality using the PEDro tool. Results were organized by intervention type. RESULTS: Of 1338 unique citations, 83 studies with 87 citations met inclusion criteria. The median study sample size was 49 (range = 9-399). The most common interventions focused on swallow (16 studies), jaw (11), or both (6), followed by whole-body exercise (14) and voice (10). Most interventions took place in the outpatient setting (77) and were restorative in intent (65 articles). The overall study quality was fair (median PEDro score 5, range 0-8); none were of excellent quality (PEDro >9). CONCLUSIONS: Most head and neck cancer rehabilitation interventions have focused on restorative swallow and jaw exercises and whole-body exercise to address dysphagia, trismus, and deconditioning. More high-quality evidence for head and neck cancer rehabilitation interventions that address a wider range of impairments and activity and social participation limitations during various cancer care phases is urgently needed to reduce head and neck cancer-associated morbidity.


Assuntos
Transtornos de Deglutição , Neoplasias de Cabeça e Pescoço , Humanos , Terapia por Exercício , Transtornos de Deglutição/etiologia , Transtornos de Deglutição/reabilitação , Exercício Físico , Qualidade de Vida
2.
Artigo em Inglês | MEDLINE | ID: mdl-38207179

RESUMO

INTRODUCTION: Physical rehabilitation is increasingly incorporated throughout the allogeneic hematopoietic stem cell transplant (allo-HSCT) journey for older adults. OBJECTIVE: This study aimed to describe physical medicine and rehabilitation (PM&R)-related diagnoses, exercise barriers, and management recommendations for older adults before allo-HSCT. DESIGN: Fifty PM&R consults as part of the Enhanced Recovery-Stem Cell Transplant (ER-SCT) multidisciplinary prehabilitation program at a comprehensive cancer center were retrospectively reviewed. RESULTS: Many PM&R-related diagnoses (173), exercise barriers (55), and management recommendations (112) were found. Common diagnoses were musculoskeletal dysfunction (more commonly back, shoulder, then knee) (n = 39, 23%) and fatigue (n = 36, 21%). Common exercise barriers were also musculoskeletal dysfunction (more commonly back, knee, then shoulder) (total n = 20, 36%) and fatigue (n = 20, 36%). Most patients (n = 32, 64%) had 1 or more exercise barriers. Common PM&R management recommendations were personalized exercise counseling (n = 37, 33%), personalized nutrition management (n = 19, 17%), body composition recommendations (n = 17, 15%), medications (n = 15, 13%), and orthotics and durable medical equipment (n = 8, 7%). CONCLUSION: Routine PM&R referral of older allo-HSCT patients for prehabilitation resulted in the identification of many rehabilitative needs and substantial additional management recommendations. Increased early, collaborative prehabilitation efforts between PM&R and allo-HSCT teams to optimize care for these patients is recommended.

3.
JAMA Otolaryngol Head Neck Surg ; 149(8): 743-753, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37382963

RESUMO

Importance: Head and neck cancer-associated lymphedema (HNCaL) affects up to 90% of survivors of head and neck cancer and is a substantial contributor to disability following head and neck cancer treatment. Despite the prevalence and morbidity associated with HNCaL, rehabilitation interventions are not well studied. Objective: To identify and appraise the current evidence for rehabilitation interventions in HNCaL. Evidence Review: Five electronic databases were searched systematically from inception to January 3, 2023, for studies on HNCaL rehabilitation interventions. Study screening, data extraction, quality rating, and risk of bias assessment were performed by 2 independent reviewers. Findings: Of 1642 citations identified, 23 studies (1.4%; n = 2147 patients) were eligible for inclusion. Six studies (26.1%) were randomized clinical trials (RCTs) and 17 (73.9%) were observational studies. Five of the 6 RCTs were published during 2020 to 2022. Most studies had fewer than 50 participants (5 of 6 RCTs; 13 of 17 observational studies). Studies were categorized by intervention type, including standard lymphedema therapy (11 studies [47.8%]) and adjunct therapy (12 studies [52.2%]). Lymphedema therapy interventions included standard complete decongestive therapy (CDT) (2 RCTs, 5 observational studies), modified CDT (3 observational studies), therapy setting (1 RCT, 2 observational studies), adherence (2 observational studies), early manual lymphatic drainage (1 RCT), and inclusion of focused exercise (1 RCT). Adjunct therapy interventions included advanced pneumatic compression devices (APCDs) (1 RCT, 5 observational studies), kinesio taping (1 RCT), photobiomodulation (1 observational study), acupuncture/moxibustion (1 observational study), and sodium selenite (1 RCT, 2 observational studies). Serious adverse events were either not found (9 [39.1%]) or not reported (14 [60.9%]). Low-quality evidence suggested the benefit of standard lymphedema therapy, particularly in the outpatient setting and with at least partial adherence. High-quality evidence was found for adjunct therapy with kinesio taping. Low-quality evidence also suggested that APCDs may be beneficial. Conclusions and Relevance: The results of this systematic review suggest that rehabilitation interventions for HNCaL, including standard lymphedema therapy with kinesio taping and APCDs, appear to be safe and beneficial. However, more prospective, controlled, and adequately powered studies are needed to clarify the ideal type, timing, duration, and intensity of lymphedema therapy components before treatment guidelines can be established.


Assuntos
Neoplasias de Cabeça e Pescoço , Linfedema , Humanos , Linfedema/etiologia , Linfedema/terapia , Neoplasias de Cabeça e Pescoço/complicações , Exercício Físico , Sobreviventes , Estudos Observacionais como Assunto
4.
J Clin Med ; 12(12)2023 Jun 09.
Artigo em Inglês | MEDLINE | ID: mdl-37373639

RESUMO

Integrative oncology is a new and growing field of cancer care. Integrative oncology is a patient-centered, evidence-based field of comprehensive cancer care that utilizes integrative therapies such as mind-body practices, acupuncture, massage, music therapy, nutrition, and exercise in collaboration with conventional cancer treatments. Patient interest and utilization has been growing over the past two decades. Clinical research has shown the benefits of these approaches to improving symptom management and quality of life, and is now being incorporated into national guidelines from the National Comprehensive Cancer Network (NCCN) and American Society for Clinical Oncology (ASCO). The availability of these services at cancer centers is growing, although the structure and implementation of integrative oncology remains highly variable. This article discusses the benefits of integrative oncology and provides an overview of the current state of integrative oncology programs nationwide. Current challenges and opportunities for cancer centers to provide integrative services is reviewed in the areas of programmatic structure, clinical service, education, and research.

5.
J Appl Gerontol ; 41(5): 1480-1484, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35109691

RESUMO

This analysis examined whether a community-based intervention produced measurable improvements in dietary habits. MOVE UP combined translational, evidence-based weight management and healthy aging interventions using a non-randomized design. This 13-month intervention included 32 group sessions, explicit calorie and physical activity goals, self-monitoring, and nutrition education. Participants were (N = 297) older adults (mean = 68.0 years) with overweight and obesity. Diet was measured using Rate Your Plate (RYP)-Heart. Changes in scores from baseline to 5, 9, and 13 months were assessed using mixed models. MOVE UP successfully shifted eating patterns from baseline (mean = 50.9) to 5 months (mean = 55.1) (p < .0001) adjusted for age, sex, and race. Improvements persisted through 9 (mean = 54.7) and 13 months (mean = 55.0) (p < .0001). Although participants were not prescribed a specific diet, RYP-Heart indicated positive dietary shifts. Community-implemented behavioral weight loss interventions may assess the modifiability of dietary habits with a simple, easy-to-administer tool.


Assuntos
Vida Independente , Estilo de Vida , Idoso , Dieta , Humanos , Sobrepeso/terapia , Redução de Peso
6.
Curr Oncol Rep ; 24(4): 517-532, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35182293

RESUMO

PURPOSE OF REVIEW: Management of head and neck cancer (HNC) typically involves a morbid combination of surgery, radiation, and systemic therapy. As the number of HNC survivors grows, there is growing interest in rehabilitation strategies to manage HNC-related comorbidity. In this review, we summarize the current state of HNC rehabilitation research. RECENT FINDINGS: We have organized our review using the World Health Organization's International Classification of Function (ICF) model of impairment, activity, and participation. Specifically, we describe the current research on rehabilitation strategies to prevent and treat impairments including dysphagia, xerostomia, dysgeusia, dysosmia, odynophagia, trismus, first bite syndrome, dysarthria, dysphonia, lymphedema, shoulder syndrome, cervicalgia, cervical dystonia and dropped head syndrome, deconditioning, and fatigue. We also discuss the broader impact of HNC-related impairment by exploring the state of rehabilitation literature on activity, participation, psychosocial distress, and suicidality in HNC survivors. We demonstrate that research in HNC rehabilitation continues to focus primarily on impairment-driven interventions. There remains a dearth of HNC rehabilitation studies directly examining the impact of rehabilitation interventions on outcomes related to activity and participation. More high-quality interventional studies and reviews are needed to guide prevention and treatment of functional loss in HNC survivors.


Assuntos
Neoplasias de Cabeça e Pescoço , Pesquisa de Reabilitação , Fadiga , Humanos , Qualidade de Vida/psicologia , Sobreviventes
7.
Blood Cell Ther ; 5(2): 54-60, 2022 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-36710949

RESUMO

Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is an integral part of the treatment strategy for patients with malignant or non-malignant hematological diseases. Clinical outcomes of patients undergoing allo-HSCT have significantly improved in recent decades. However, transplant-related morbidity and mortality remain major issues for allo-HSCT recipients. With regard to nutrition, patients undergoing allo-HSCT are at high risk for malnutrition. It is expected that clinical practice concerning nutritional support in allo-HSCT has been improving in recent decades; however, no data directly support this expectation. One major issue in managing nutritional support during allo-HSCT is the lack of large-scale randomized prospective studies, which leads to a lack of well-established strategies. Accordingly, we need to gather data from studies in non-HSCT and allo-HSCT settings. In some Asia-Pacific countries, a physician's lack of knowledge of nutritional support may impede the application of nutritional support practices recommended by existing guidelines. Another barrier may be the lack of access to an adequately qualified or trained registered dietitian (RD) at allo-HSCT units. Adequate training in the nutritional management of allo-HSCT patients should be provided to all RDs working with HSCT. Herein, we summarize the information on nutritional support in allo-HSCT, focusing on an Asian perspective.

8.
Mol Immunol ; 128: 150-164, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33129017

RESUMO

During mammalian lymphoid development, Notch signaling is necessary at multiple stages of T lymphopoiesis, including lineage commitment, and later stages of T cell effector differentiation. In contrast, outside of a defined role in the development of splenic marginal zone B cells, there is conflicting evidence regarding whether Notch signaling plays functional roles in other B cell sub-populations. Complement receptor 2 (CR2) modulates BCR-signaling and is tightly regulated throughout differentiation. During B lymphopoiesis, CR2 is detected on immature and mature B cells with high surface expression on marginal zone B cells. Here, we have explored the possibility that Notch regulates human CR2 transcriptional activity using in vitro models including a co-culture system, co-transfection gene reporters and chromatin accessibility assays. We provide evidence that Notch signaling regulates CR2 promoter activity in a mature B cell line, as well as the induction of endogenous CR2 mRNA in a non-expressing pre-B cell line. The dynamics of endogenous gene activation suggests additional unidentified factors are required to mediate surface CR2 expression on immature and mature B lineage cells.


Assuntos
Complemento C3d/genética , Células Precursoras de Linfócitos B/fisiologia , Regiões Promotoras Genéticas/genética , Receptores de Complemento 3d/genética , Receptores Notch/genética , Transdução de Sinais/genética , Transcrição Gênica/genética , Linfócitos B/fisiologia , Diferenciação Celular/genética , Linhagem Celular , Linhagem Celular Tumoral , Cromatina/genética , Técnicas de Cocultura/métodos , Humanos , Células K562 , Ativação Linfocitária/genética , Linfopoese/genética
9.
Contemp Clin Trials ; 91: 105958, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32087342

RESUMO

BACKGROUND: Self-monitoring food intake and physical activity (PA) is positively related to weight loss and the addition of feedback (FB) messages has been shown to reinforce behavior change. Moreover, the more immediate the delivery of reinforcing FB messages, the more likely they will promote the desired behaviors. PURPOSE: Describe design and rationale of SMARTER, a National Institute of Heart, Lung, and Blood (NHLBI)-sponsored randomized, controlled trial, which compares the differential efficacy of two weight loss treatments among 530 adults, ages 18 and older. METHODS: Single-site, 2-group design trial with subjects randomized 1:1 to either: 1) self-monitoring (SM), where participants self-monitor diet, PA, and weight using a commercial smartphone application (app); or 2) SM + FB, where participants self-monitor and receive real-time, tailored feedback (FB) as pop-up messages up to 3 times/day for 12 months. Daily FB messages address diet and PA behaviors and a weekly FB message addresses self-weighing. We hypothesize that subjects assigned to SM + FB will show greater weight loss at 6 and 12 months and greater sustained engagement in the program than the SM group, measured by adherence to the study's lifestyle and SM protocol. We will explore temporal relationships of the frequency, timing, and type of FB delivered and subsequent lifestyle behaviors through examination of serially collected real-time SM (diet, PA, weight) data over 12 months. CONCLUSIONS: If efficacious, this fully scalable intervention could be efficiently translated and disseminated to reach large numbers of individuals through commercial apps at lower cost than existing in-person weight loss programs.


Assuntos
Retroalimentação , Estilo de Vida Saudável , Aplicativos Móveis , Programas de Redução de Peso/organização & administração , Pressão Sanguínea , Índice de Massa Corporal , Pesos e Medidas Corporais , Dieta , Exercício Físico , Monitores de Aptidão Física , Promoção da Saúde/organização & administração , Humanos , Sistemas de Alerta , Projetos de Pesquisa , Autocuidado , Autoeficácia , Redução de Peso
10.
Dalton Trans ; 47(29): 9579-9584, 2018 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-29974086

RESUMO

Catalytic hydroboration of ketones with pinacolborane was achieved with a 2D iron(ii) coordination polymer (CP) of a divergent 4,2';6',4''-terpyridine (tpy) derivative under mild conditions with high efficiency. This solid iron catalyst system is more active towards the hydroboration of ketones than that of aldehydes, displaying a different trend of reactivity from known homogeneous iron hydroboration catalysts.

11.
Psychol Addict Behav ; 32(4): 410-414, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29847978

RESUMO

Ethnic differences in smoking patterns and dependence have been observed between Caucasian and African American smokers: African Americans who smoke are more likely to be intermittent smokers (ITS), and daily smokers (DS) consume fewer cigarettes yet report more dependence. Participants' (N = 482, 67% Caucasian, 54% ITS) dependence was assessed by primary and secondary dependence subscales of the Wisconsin Inventory of Smoking Dependence Motives, the Nicotine Dependence Syndrome Scale, the Hooked on Nicotine Checklist, the Fagerström Test of Nicotine Dependence, and time to first cigarette after waking. We tested associations with dependence for ethnicity, smoker type, and an Ethnicity × Smoker Type interaction, using multivariable linear regression, with adjustment for age, sex, and education. Additional models adjusted for cigarettes per day and history of daily smoking. There was a significant interaction between ethnicity and smoker type for 5 of 6 measures of dependence (each scale assessed separately), such that African American ITS reported more dependence than Caucasian ITS, whereas dependence did not differ by ethnicity among DS. African American ITS smoked more cigarettes per day and were more likely to have a history of daily smoking than Caucasian ITS; after further adjustments for these differences, there were no significant interactions of ethnicity and smoker type for any measure. Among DS, dependence did not differ by race. African American ITS were more dependent than Caucasian ITS; this difference was explained by higher cigarette consumption and a higher proportion converted from DS to ITS among African Americans versus Caucasians. (PsycINFO Database Record


Assuntos
Negro ou Afro-Americano , Motivação , Fumar/etnologia , Tabagismo/etnologia , População Branca , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fumantes
12.
BMJ Case Rep ; 20172017 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-28062429

RESUMO

Complementary and alternative medicine (CAM) therapies are commonly incorporated into the care of patients with paediatric cancer. Many modalities are safe and effective during cancer treatment and have proved beneficial for symptom relief and quality of life. However, situations where alternative therapy is provided without allopathic medical care supportive care resources can pose a safety risk to patients. This report describes the case of a 16-year-old Chinese girl with metastatic Ewing sarcoma who sought treatment with alternative treatment in Mexico. When her disease progressed with an ensuing significant loss of function, the centre personnel were unable to respond to her acute deterioration or provide necessary medical care. This resulted in her being stranded in a foreign country paralysed, isolated, and with large unanticipated financial expenditures.


Assuntos
Neoplasias Ósseas/terapia , Terapias Complementares/efeitos adversos , Sarcoma de Ewing/terapia , Adolescente , Neoplasias Ósseas/economia , Terapias Complementares/economia , Efeitos Psicossociais da Doença , Progressão da Doença , Evolução Fatal , Feminino , Fraturas Espontâneas/economia , Fraturas Espontâneas/etiologia , Humanos , Recidiva Local de Neoplasia/economia , Recidiva Local de Neoplasia/etiologia , Costelas , Sarcoma de Ewing/economia , Fraturas da Coluna Vertebral/economia , Fraturas da Coluna Vertebral/etiologia , Neoplasias da Coluna Vertebral/secundário , Resultado do Tratamento
13.
J Cell Physiol ; 232(1): 182-91, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27064596

RESUMO

DICER is the central enzyme that cleaves precursor microRNAs (miRNAs) into 21-25 nucleotide duplex in cell lineage differentiation, identity, and survival. In the current study, we characterized the specific bone metabolism genes and corresponding miRNAs and found that DICER and Runt-related transcription factor 2 (Runx2) expressions increased simultaneously during osteogenic differentiation. Luciferase assay showed that Runx2 significantly increased the expression levels of DICER luciferase promoter reporter. Our analysis also revealed weaker DICER expression in embryos of Runx2 knock out mice (Runx2 -/-) compared with that of Runx2 +/- and Runx2 +/+ mice. We further established the calvarial bone critical-size defect (CSD) mouse model. The bone marrow stromal cells (BMSCs) transfected with siRNA targeting DICER were combined with silk scaffolds and transplanted into calvarial bone CSDs. Five weeks post-surgery, micro-CT analysis revealed impaired bone formation, and repairing in calvarial defects with the siRNA targeting DICER group. In conclusion, our results suggest that DICER is specifically regulated by osteogenic master gene Runx2 that binds to the DICER promoter. Consequently, DICER cleaves precursors of miR-335-5p and miR-17-92 cluster to form mature miRNAs, which target and decrease the Dickkopf-related protein 1 (DKK1), and proapoptotic factor BIM levels, respectively, leading to an enhanced Wnt/ß-catenin signaling pathway. These intriguing results reveal a central mechanism underlying lineage-specific regulation by a Runx2/DICER/miRNAs cascade during osteogenic differentiation and bone development. Our study, also suggests a potential application of modulating DICER expression for bone tissue repair and regeneration. J. Cell. Physiol. 232: 182-191, 2017. © 2016 Wiley Periodicals, Inc.


Assuntos
Diferenciação Celular/genética , Subunidade alfa 1 de Fator de Ligação ao Core/metabolismo , RNA Helicases DEAD-box/metabolismo , Células-Tronco Mesenquimais/metabolismo , Osteogênese/genética , Ribonuclease III/metabolismo , Animais , Linhagem Celular , Subunidade alfa 1 de Fator de Ligação ao Core/deficiência , RNA Helicases DEAD-box/genética , Camundongos , Camundongos Knockout , MicroRNAs/genética , Osteoblastos/metabolismo , RNA Mensageiro/metabolismo , RNA Interferente Pequeno/metabolismo , Ribonuclease III/genética
14.
J Gastrointest Oncol ; 6(3): 247-53, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26029450

RESUMO

BACKGROUND: Gastric adenocarcinoma (GAC) is one of the most commonly diagnosed cancers worldwide. Two standard approaches for treatment of resectable GAC include adjuvant 5-fluorouracil-based chemoradiotherapy [per Intergroup 0116 (INT-0116) trial and perioperative epirubicin, cisplatin, fluorouracil (ECF) chemotherapy per Medical Research Council Adjuvant Gastric Infusional Chemotherapy (MAGIC) trial]. Controversy remains regarding the most appropriate treatment strategy to decrease recurrence rates and improve survival following surgery. The purpose of this study was to analyze how patterns of care for patients with GAC treated at Emory University Hospital changed following publication of the MAGIC trial in 2006. METHODS: We analyzed a prospectively maintained database of 150 patients who underwent resection for GAC between December 2000 and June 2013. Patients were divided into two cohorts, Early [2000-2006] and late [2007-2013]. The primary objective was to compare the number of patients assigned to adjuvant chemoradiotherapy (aCRT) vs. perioperative chemotherapy (PC) throughout the study period and secondarily assess for recurrence patterns and survival outcomes for patients assigned to those two strategies. RESULTS: Between 2000 and 2013, 124 patients received adjuvant therapy for GAC. Fifty-four patients were treated with PC and 70 patients with aCRT. The early cohort included 56 patients, and the late cohort included 94 patients. There was no statistical difference in the number of patients receiving aCRT between the Early and Late cohorts [n=23 (50%) vs. 35 (38%) respectively, P=0.21]. PC increased from 2 patients (3.6%) in the Early cohort to 32 patients (34%) in the Late cohort (P<0.001). Four-year overall survival (OS) was 32.6% for the Early cohort and 68.8% for the Late cohort (P=0.010). Overall recurrence rate was 25.3% with no significant difference in rates of recurrence seen between the Early and Late cohorts. CONCLUSIONS: PC has become more prevalent in patients treated at Emory following publication of the MAGIC trial in 2006. OS, but not recurrence rates, has also improved since publication. Although improved survival is suggestive of improved care, the question of optimal treatment regimen remains open. Further prospective comparisons of PC and aCRT are needed to identify patient and disease parameters that may guide therapy selection.

15.
Stem Cells ; 33(1): 240-52, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25187480

RESUMO

Adiponectin (APN) is an adipocyte-secreted adipokine that exerts well-characterized antidiabetic properties. Patients with type 2 diabetes (T2D) are characterized by reduced APN levels in circulation and impaired stem cell and progenitor cell mobilization from the bone marrow for tissue repair and remodeling. In this study, we found that APN regulates the mobilization and recruitment of bone marrow-derived mesenchymal stem cells (BMSCs) to participate in tissue repair and regeneration. APN facilitated BMSCs migrating from the bone marrow into the circulation to regenerate bone by regulating stromal cell-derived factor (SDF)-1 in a mouse bone defect model. More importantly, we found that systemic APN infusion ameliorated diabetic mobilopathy of BMSCs, lowered glucose concentration, and promoted bone regeneration in diet-induced obesity mice. In vitro studies allowed us to identify Smad1/5/8 as a novel signaling mediator of APN receptor (AdipoR)-1 in BMSCs and osteoblasts. APN stimulation of MC3T3-E1 osteoblastic cells led to Smad1/5/8 phosphorylation and nuclear localization and increased SDF-1 mRNA expression. Although APN-mediated phosphorylation of Smad1/5/8 occurred independently from adaptor protein, phosphotyrosine interaction, pleckstrin homology domain, and leucine zipper containing 1, it correlated with the disassembly of protein kinase casein kinase 2 and AdipoR1 in immunoprecipitation experiments. Taken together, this study identified APN as a regulator of BMSCs migration in response to bone injury. Therefore, our findings suggest APN signaling could be a potential therapeutic target to improve bone regeneration and homeostasis, especially in obese and T2D patients.


Assuntos
Adiponectina/metabolismo , Doenças Ósseas/terapia , Células da Medula Óssea/citologia , Diabetes Mellitus Tipo 2/terapia , Células-Tronco Mesenquimais/citologia , Nicho de Células-Tronco/fisiologia , Células 3T3 , Animais , Doenças Ósseas/metabolismo , Doenças Ósseas/patologia , Células da Medula Óssea/metabolismo , Proliferação de Células/fisiologia , Quimiocina CXCL12/metabolismo , Diabetes Mellitus Tipo 2/metabolismo , Diabetes Mellitus Tipo 2/patologia , Humanos , Masculino , Células-Tronco Mesenquimais/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Receptores CXCR4/metabolismo , Transdução de Sinais , Transfecção
16.
Am J Physiol Endocrinol Metab ; 306(12): E1418-30, 2014 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-24780611

RESUMO

Adiponectin (APN), the most abundant adipocyte-secreted adipokine, regulates energy homeostasis and exerts well-characterized insulin-sensitizing properties. The peripheral or central effects of APN regulating bone metabolism are beginning to be explored but are still not clearly understood. In the present study, we found that APN-knockout (APN-KO) mice fed a normal diet exhibited decreased trabecular structure and mineralization and increased bone marrow adiposity compared with wild-type (WT) mice. APN intracerebroventricular infusions decreased uncoupling protein 1 (UCP1) expression in brown adipose tissue, epinephrine and norepinephrine serum levels, and osteoclast numbers, whereas osteoblast osteogenic marker expression and trabecular bone mass increased in APN-KO and WT mice. In addition, centrally administered APN increased hypothalamic tryptophan hydroxylase 2 (TPH2), cocaine- and amphetamine-regulated transcript (CART), and 5-hydroxytryptamine (serotonin) receptor 2C (Htr2C) expressions but decreased hypothalamic cannabinoid receptor-1 expression. Treatment of immortalized mouse neurons with APN demonstrated that APN-mediated effects on TPH2, CART, and Htr2C expression levels were abolished by downregulating adaptor protein containing pleckstrin homology domain, phosphotyrosine domain, and leucine zipper motif (APPL)-1 expression. Pharmacological increase in sympathetic activity stimulated adipogenic differentiation of bone marrow stromal cells (BMSC) and reversed APN-induced expression of the lysine-specific demethylases involved in regulating their commitment to the osteoblastic lineage. In conclusion, we found that APN regulates bone metabolism via central and peripheral mechanisms to decrease sympathetic tone, inhibit osteoclastic differentiation, and promote osteoblastic commitment of BMSC.


Assuntos
Adiponectina/farmacologia , Conservadores da Densidade Óssea/farmacologia , Medula Óssea/efeitos dos fármacos , Osso e Ossos/efeitos dos fármacos , Osteogênese/efeitos dos fármacos , Fragmentos de Peptídeos/farmacologia , Proteínas Recombinantes/farmacologia , Adiponectina/antagonistas & inibidores , Adiponectina/química , Adiponectina/genética , Adiposidade/efeitos dos fármacos , Animais , Conservadores da Densidade Óssea/administração & dosagem , Conservadores da Densidade Óssea/antagonistas & inibidores , Conservadores da Densidade Óssea/química , Medula Óssea/metabolismo , Osso e Ossos/diagnóstico por imagem , Osso e Ossos/metabolismo , Linhagem Celular , Regulação da Expressão Gênica/efeitos dos fármacos , Inativação Gênica , Humanos , Hipotálamo/citologia , Hipotálamo/efeitos dos fármacos , Hipotálamo/metabolismo , Infusões Intraventriculares , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Neurônios/citologia , Neurônios/efeitos dos fármacos , Neurônios/metabolismo , Fragmentos de Peptídeos/antagonistas & inibidores , Fragmentos de Peptídeos/química , Fragmentos de Peptídeos/genética , Conformação Proteica , Radiografia , Distribuição Aleatória , Proteínas Recombinantes/administração & dosagem , Proteínas Recombinantes/química
17.
BMC Cell Biol ; 12: 50, 2011 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-22098624

RESUMO

BACKGROUND: SOX4 is a developmental transcription factor that is required for differentiation and proliferation in multiple tissues. SOX4 is overexpressed in many human malignancies, but the precise role of SOX4 in cancer progression is still not well understood. Thus, the identification of additional SOX4 binding partners is essential for elucidating the mechanism of SOX4-mediated effects in cancer progression. RESULTS: Here, we have adapted a one-step affinity purification method that enables rapid purification of SOX4 complexes via intracellular biotinylation of the amino-terminus of SOX4 to perform large-scale proteomics analysis. We have discovered that junction plakoglobin (JUP) interacts with SOX4 in both the cytosol and the nucleus and the interaction between SOX4 and plakoglobin is significantly increased when prostate and breast cancer cells are stimulated with WNT3A. Interactions between SOX4 and plakoglobin were further enhanced by the nuclear export inhibitor leptomycin B (LMB), suggesting that plakoglobin promotes nuclear export of SOX4. The SOX4-plakoglobin complex affected the expression of Wnt pathway target genes and SOX4 downstream targets, such as AXIN2, DICER1, and DHX9. In addition, SOX4 DNA binding activity to the promoters of DICER1, AXIN2, DHX9 and SOX4 itself was reduced by conditions that promote SOX4-plakoglobin complex formation. Conditions that enhanced SOX4-plakoglobin interactions resulted in reduced transcriptional activity of ß-catenin luciferase reporters. CONCLUSIONS: These data suggest that this newly identified interaction between SOX4 and plakoglobin is inhibitory and provides new insights into the role of SOX4 in key pathways in cell proliferation, development, and cancer progression.


Assuntos
Neoplasias da Próstata/fisiopatologia , Fatores de Transcrição SOXC/metabolismo , Proteína Wnt3A/metabolismo , gama Catenina/metabolismo , Transporte Ativo do Núcleo Celular/efeitos dos fármacos , Antibióticos Antineoplásicos/farmacologia , Proteína Axina/genética , Proteína Axina/metabolismo , Linhagem Celular Tumoral , RNA Helicases DEAD-box/genética , RNA Helicases DEAD-box/metabolismo , DNA/metabolismo , Ácidos Graxos Insaturados/farmacologia , Humanos , Masculino , Proteínas de Neoplasias/genética , Proteínas de Neoplasias/metabolismo , Regiões Promotoras Genéticas , Ligação Proteica/efeitos dos fármacos , Interferência de RNA , RNA Interferente Pequeno , Ribonuclease III/genética , Ribonuclease III/metabolismo , Fatores de Transcrição SOXC/genética , Via de Sinalização Wnt , gama Catenina/antagonistas & inibidores , gama Catenina/genética
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