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obesity and falls

Zeeshan Ali, P Charukeshi Chandrasekera, John J Pippin
Obesity and type 2 diabetes mellitus (T2DM) have reached pandemic proportions worldwide, and considerable research efforts have been dedicated to investigating disease pathology and therapeutic options. The two hallmark features of T2DM, insulin resistance and pancreatic dysfunction, have been studied extensively by using various animal models. Despite the knowledge acquired from such models, particularly mechanistic discoveries that sometimes mimic human T2DM mechanisms or pathways, many details of human T2DM pathogenesis remain unknown, therapeutic options remain limited, and a cure has eluded research...
March 2018: Alternatives to Laboratory Animals: ATLA
Arthur M Lee, Rebecca J Scharf, Mark D DeBoer
OBJECTIVE: The aim of this study was to determine if food insecurity is an independent risk factor for obesity in U.S. children. METHODS: We analyzed data from a nationally representative sample of children participating in the Early Childhood Longitudinal Study-Kindergarten Cohort 2011. Statistical analyses were performed to evaluate longitudinal associations between food security and body mass index (BMI) z-score. All regression models included race/ethnicity, household income, and parental education...
February 5, 2018: Nutrition
Alfonso Reimúndez, Carlos Fernández-Peña, Guillermo García, Rubén Fernández, Purificación Ordás, Rosalía Gallego, José L Pardo-Vazquez, Victor Arce, Félix Viana, Rosa Señarís
The coupling of energy homeostasis to thermoregulation is essential to maintain homeothermy in changing external environments. We studied the role of the cold thermoreceptor TRPM8 in this interplay in mice of both sexes. We demonstrate that TRPM8 is required for a precise thermoregulation in response to cold, in fed and fasting. Trpm8-/- mice exhibited a fall of 0.7 °C in core body temperature (Tc) when housed at cold temperatures, and a deep hypothermia (below 30 °C) during food deprivation. In both situations TRPM8-deficiency induced an increase in tail heat loss...
March 12, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
Simona Delle Monache, Patrizia Di Fulvio, Ester Iannetti, Luca Valerii, Ludovica Capone, Maria Giovanna Nespoli, Mauro Bologna, Adriano Angelucci
BACKGROUND & AIMS: Vitamin D is a pleiotropic hormone targeting several tissues and is involved in basic homeostatic processes, including bone mineralization, immune response and muscle strength. Although hypovitaminosis D is common in Europe and North America, representing a risk factor for several chronic diseases, the contribution of factors other than sun exposure is largely underestimated. METHODS: In our study, we retrospectively collected data from medical records of women with age between 19 and 80 screened in Central Italy (42°N) for increased risk of metabolic syndrome...
March 2, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
Camilla L Asferg, Søren J Nielsen, Ulrik B Andersen, Allan Linneberg, Jens P Goetze, Jørgen L Jeppesen
Atrial natriuretic peptide (ANP) is primarily seen as a hormone involved in salt and water homeostasis and blood pressure regulation. Evidence supports a link between metabolism and ANP. Circulating ANP concentrations are low in obese individuals with insulin resistance and hyperinsulinemia. The dynamic relationship between insulin and ANP has been sparsely studied. We therefore measured circulating concentrations of midregional proatrial natriuretic peptide (MR-proANP), a stable marker of ANP secretion, and insulin in lean and obese men during an oral glucose challenge...
March 7, 2018: Peptides
Rebecca Schnall, Haomiao Jia, Susan Olender, Melissa Gradilla, Nancy Reame
OBJECTIVE: The majority of people living with HIV in the United States are now over the age of 50, but symptom burden research has seldom included older women or the potential role of menopause. The aim of the study was to examine the influence of menopause as part of sex differences in HIV symptom burden. METHODS: A cross-sectional study was conducted that included both a sex-based analysis of previously reported HIV symptom characteristics of 1,342 respondents to an online survey (males, n = 957; female, n = 385) and a follow-up online survey of menstrual bleeding patterns (inferred menopause) in eligible females (n = 242) from the respondent pool...
March 5, 2018: Menopause: the Journal of the North American Menopause Society
Qin Zhang, Huanyu Guo, Haifeng Gu, Xiaohong Zhao
Background: Frailty associated with aging increases the risk of falls, disability, and death. We investigated gender-associated factors for frailty. Methods: Data of 3,079 geriatric subjects were retrieved from the National Health and Nutrition Examination Survey (NHANES) 2007-2010 database. After excluding 1,126 subjects with missing data on frailty, medical history and survival, data of 1,953 patients were analyzed. Main endpoints were frailty prevalence, mortality rates and causes of death...
2018: PeerJ
Malgorzata A Desmond, Jakub Sobiecki, Mary Fewtrell, Jonathan C K Wells
Cardiovascular disease (CVD) is the largest contributor to global mortality, and this trend is expected to continue. Although mortality rates have been falling, adverse developments in obesity and diabetes threaten to reverse this. It has been estimated that the only viable strategy to reduce the epidemic is to focus on population-wide risk factor reduction. Primordial prevention, a strategy aimed at avoiding the development of risk factors before the disease onset, has been shown to reduce the CVD epidemic substantially...
March 1, 2018: Nutrition Reviews
Ning Zhang, Yanhua Zhou, Bo Zhang, Susan F Lu, Laurel Copeland, Jerry H Gurwitz
Background: To examine the association between body mass index (BMI) and the risk for falls and hip fractures among nursing home (NH) residents. Methods: A cohort study of newly admitted NH residents, excluding those with a prior history of hip fracture. Using the Minimum Data Set 2.0 (2006-2010), we determined the occurrence of new falls and hip fractures among NH residents during their first three months of stay. Residents were categorized as underweight (BMI < 18...
February 28, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
David Scott, Catherine Shore-Lorenti, Lachlan B McMillan, Jakub Mesinovic, Ross A Clark, Alan Hayes, Kerrie M Sanders, Gustavo Duque, Peter R Ebeling
OBJECTIVES: To determine whether associations of calf muscle density with physical function are independent of other determinants of functional decline in overweight and obese older adults. METHODS: This was a secondary analysis of a cross-sectional study of 85 community-dwelling overweight and obese adults (mean±SD age 62.8±7.9 years; BMI 32.3±6.1 kg/m2; 58% women). Peripheral quantitative computed tomography assessed mid-calf muscle density (66% tibial length) and dual-energy X-ray absorptiometry determined visceral fat area...
March 1, 2018: Journal of Musculoskeletal & Neuronal Interactions
Laurence G Trahair, Tongzhi Wu, Christine Feinle-Bisset, Chinmay S Marathe, Christopher K Rayner, Michael Horowitz, Karen L Jones
Meal consumption leads to an increase in sympathetic output to compensate for hemodynamic changes and maintain blood pressure (BP). Obesity is associated with a blunting of the sympathetic response to meal ingestion, but interpretation of studies investigating these responses is compromised by their failure to account for the rate of gastric emptying, which is an important determinant of postprandial cardiovascular and sympathetic responses and, in both health and obesity, exhibits a wide interindividual variation...
February 2018: Physiological Reports
Beom-Young Cho, Dong-Chul Seo, Hsien-Chang Lin, David K Lohrmann, Andrea K Chomistek
INTRODUCTION: This study examined the associations of BMI category and central obesity status, with falls among community-dwelling older adults in the U.S. METHODS: Data were drawn from the 2012 and 2014 U.S. Health and Retirement Study, a nationally representative longitudinal panel study funded by the National Institute of Aging. The study participants were U.S. community-dwelling older adults aged ≥65 years (N=3,383). Multiple logistic regression and Poisson regression analyses examined the associations of BMI category and central obesity (waist circumference >102 cm in men and >88 cm in women) with experiencing a fall and fall injury, after adjusting for all other covariates...
February 9, 2018: American Journal of Preventive Medicine
Josianne Rodrigues-Krause, Mauricio Krause, Alvaro Reischak-Oliveira
Context • Dancing has been used as a form of exercise to improve functional and metabolic outcomes during aging. The field lacks randomized, clinical trials (RCTs) evaluating metabolic outcomes related to dance interventions, but dancing may be a form of exercise that could induce positive effects on the metabolic health of older adults. However, primary studies seem very heterogonous regarding the trial designs, characteristics of the interventions, the methods for outcomes assessments, statistical powers, and methodological quality...
February 10, 2018: Alternative Therapies in Health and Medicine
George A Kanakis, Eberhard Nieschlag
Klinefelter syndrome (KS) is the most frequent chromosome disorder in males (1:650 newborn males), defined by 47,XXY karyotype. The classical phenotype is that of a tall male with relatively long legs, small, firm testes and gynecomastia. Azoospermia and infertility are almost inevitably present, but may be overcome by TESE and ICSI. Nevertheless, a broad spectrum of phenotypes has been described and more than 70% of the actually existing KS men may remain undiagnosed throughout their lifespan. Accordingly, hypogonadism is usually not evident until early adulthood and progresses with ageing...
January 31, 2018: Metabolism: Clinical and Experimental
Jacqueline K Limberg, Winston Guo, Michael J Joyner, Nisha Charkoudian, Timothy B Curry
Blood pressure (BP) reactivity is predictive of cardiovascular disease. We hypothesized the BP response at the onset of isometric handgrip exercise would occur earlier and to a lesser degree in individuals who underwent bariatric surgery when compared to obese adults and the reliance on total peripheral resistance (TPR) would be attenuated. METHODS: Twenty-six individuals (7 non-obese, 11 obese, 8 post-bariatric surgery) completed isometric handgrip exercise (40% maximum voluntary contraction) to exhaustion...
December 21, 2017: Journal of Applied Physiology
D Grahame Hardie
Living cells obtain energy either by oxidizing reduced compounds of organic or mineral origin or by absorbing light. Whichever energy source is used, some of the energy released is conserved by converting adenosine diphosphate (ADP) to adenosine triphosphate (ATP), which are analogous to the chemicals in a rechargeable battery. The energy released by the conversion of ATP back to ADP is used to drive most energy-requiring processes, including cell growth, cell division, communication and movement. It is clearly essential to life that the production and consumption of ATP are always maintained in balance, and the AMP-activated protein kinase (AMPK) is one of the key cellular regulatory systems that ensures this...
January 2018: Journal of the Royal Society, Interface
O Ramos-Lopez, J I Riezu-Boj, F I Milagro, L Goni, M Cuervo, J A Martinez
BACKGROUND AND AIMS: A precise nutrigenetic management of hypercholesterolemia involves the understanding of the interactions between the individual's genotype and dietary intake. The aim of this study was to analyze the response to two dietary energy-restricted interventions on cholesterol changes in carriers of two ADRB2 polymorphisms. METHODS AND RESULTS: A 4-month nutritional intervention was conducted involving two different hypo-energetic diets based on low-fat (LF) and moderately high-protein (MHP) dietary patterns...
December 5, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Hema Chagarlamudi, Juhee Kim, Edward Newton
OBJECTIVES: Pregnancy outcomes and infant growth and development are influenced by various prenatal and postnatal factors. Gestational weight gain (GWG) is an important indicator of pregnancy management and outcomes. Information about the interaction between prenatal obesity and depression on GWG among low-income women is limited. There also is a lack of information about morbid obesity and GWG. The purpose of this study was to examine the associations of prepregnancy weight status, including morbid obesity as a separate group, and prenatal depression with GWG using electronic medical records in an academic prenatal clinic serving a largely low-income population...
January 2018: Southern Medical Journal
Qingwei Hu, Lu Shi, Liwei Chen, Lu Zhang, Khoa Truong, Alex Ewing, Jiande Wu, John Scott
BACKGROUND: Weight loss surgery is a common procedure in the United States. OBJECTIVE: As weight loss surgery is largely an elective procedure for which patients and physicians can choose the timing, it could be helpful to explore the seasonality pattern of its perioperative adverse outcomes to help decide the timing of this surgery. SETTING: United States. METHODS: We used an obese adult sample (age ≥20 yr) of patients who underwent weight loss surgeries from the Premier Healthcare Database from 2011 to 2014...
December 1, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
Samuel Torres-Landa, Umashankkar Kannan, Isabella Guajardo, Octavia E Pickett-Blakely, Daniel T Dempsey, Noel N Williams, Kristoffel R Dumon
Obesity is a spreading epidemic associated with significant morbidity and mortality with a prevalence of over 36% worldwide. In the face of a growing epidemic, increasing medical costs, and the disappointing limitations of medical and lifestyle modification bariatric surgery was found to consistently lead to significant weight loss and improvement in obesity-associated comorbidities when compared to non-surgical interventions. Bariatric procedures fall within three basic categories: restrictive procedures, malabsorptive procedures, and procedures that combine both restrictive and malabsorptive mechanisms...
December 14, 2017: Minerva Chirurgica
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