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Sex and Aging

Caroline Charette, Krista L Best, Emma M Smith, William C Miller, François Routhier
Background: Mobility limitations represent the third most prevalent cause of disability, affecting more than 1.9 million community-dwelling Canadians. Walking aids are often prescribed to reduce the impacts of mobility impairments. There are limited data on walking aids since 2004. Objective: The objective of this study was to investigate the prevalence of walking aid use in Canada and to explore demographic characteristics among users of walking aids. Design: The design used was a secondary analysis of a cross-sectional national survey...
March 14, 2018: Physical Therapy
Arjun Sethi, Valerie Voon, Hugo D Critchley, Mara Cercignani, Neil A Harrison
Computational models of reinforcement learning have helped dissect discrete components of reward-related function and characterize neurocognitive deficits in psychiatric illnesses. Stimulus novelty biases decision-making, even when unrelated to choice outcome, acting as if possessing intrinsic reward value to guide decisions toward uncertain options. Heightened novelty seeking is characteristic of attention deficit hyperactivity disorder, yet how this influences reward-related decision-making is computationally encoded, or is altered by stimulant medication, is currently uncertain...
March 13, 2018: Brain: a Journal of Neurology
Xu Chen, Stefan Gustafsson, Thomas Whitington, Yan Borné, Erik Lorentzen, Jitong Sun, Peter Almgren, Jun Su, Robert Karlsson, Jie Song, Yi Lu, Yiqiang Zhan, Sara Hägg, Per Svensson, Karin E Smedby, Susan L Slager, Erik Ingelsson, Cecilia M Lindgren, Andrew P Morris, Olle Melander, Thomas Karlsson, Ulf de Faire, Kenneth Caidahl, Gunnar Engström, Lars Lind, Mikael C I Karlsson, Nancy L Pedersen, Johan Frostegård, Patrik K E Magnusson
Phosphorylcholine (PC) is an epitope on oxidized low-density lipoprotein (oxLDL), apoptotic cells and several pathogens like Streptococcus pneumoniae. Immunoglobulin M against PC (IgM anti-PC) has the ability to inhibit uptake of oxLDL by macrophages and increase clearance of apoptotic cells. From our genome-wide association studies (GWAS) in four European-ancestry cohorts, six SNPs in 11q24.1 were discovered (in 3002 individuals) and replicated (in 646 individuals) to be associated with serum level of IgM anti-PC (the leading SNP rs35923643-G, combined beta=0...
March 14, 2018: Human Molecular Genetics
Robert Dziedzic, Tomasz Marjanski, Franciszek Binczyk, Joanna Polanska, Wioletta Sawicka, Witold Rzyman
OBJECTIVES: The video-assisted thoracoscopic surgery (VATS) approach has become a standard for the treatment of early-stage non-small-cell lung cancer (NSCLC). Recently published meta-analyses proved the benefit of VATS versus thoracotomy for overall survival (OS) and reduction of postoperative complications. The aim of this study was to compare early outcomes, long-term survival and rate of postoperative complications of the VATS approach versus thoracotomy. METHODS: In this retrospective cohort study, we analysed 982 individuals who underwent surgical resection for Stage I-IIA NSCLC between 2007 and 2015...
March 14, 2018: European Journal of Cardio-thoracic Surgery
Satoshi Murao, Yasunori Takata, Mitsugi Yasuda, Haruhiko Osawa, Fumikazu Kohi
Background: Considering sex differences, salt sensitivity and insulin resistance (IR), the effect of sodium restriction and increased potassium intake on blood pressure remains unclear in normotensive Asian individuals, compared to that in hypertensive patients. Methods: To assess the influence of sodium and potassium intake in normotensive individuals, we evaluated the estimated 24-hour urinary sodium and potassium excretion rate in 3,392 drug-naïve normotensive Japanese individuals (average age: 48...
March 14, 2018: American Journal of Hypertension
Erika Obikane, Tomohiro Shinozaki, Daisuke Takagi, Norito Kawakami
BACKGROUND: Childhood abuse is associated with adult suicidal behaviors, partially mediated by mental disorders. However, the direct effect of childhood abuse not mediated by mental disorders is uncertain because the same risk factors serve as mediators and confounders of mental disorders and suicidal behaviors. The aim of the study was to estimate the direct effect of childhood abuse not mediated by mental disorders on suicidal behaviors using marginal structural models. METHODS: We used cross-sectional data of Japanese adults in Tokyo and neighboring prefectures (The Japanese Study on Stratification, Health, Income, and Neighborhood)...
February 22, 2018: Journal of Affective Disorders
Kouta Suzuki, Hidehito Niimura, Ryoko Yamazawa, Takahiro Nemoto, Masaaki Murakami, Masaru Mimura, Masafumi Mizuno
INTRODUCTION: In recent years, the early detection and treatment of the first episode of schizophrenia (FES) has attracted worldwide attention. In Japan, psychiatric care has changed to an open and accessible framework over the past decade. Therefore, the duration of untreated psychosis (DUP) is thought to have been shortened. The purposes of this study were to investigate whether recent DUP periods are shorter than they were 10 years ago and whether the DUP at present differs among psychiatric facilities...
March 7, 2018: Asian Journal of Psychiatry
Alexandra M V Wennberg, Clinton E Hagen, Mary M Machulda, John H Hollman, Rosebud O Roberts, David S Knopman, Ronald C Petersen, Michelle M Mielke
Levels of insulin-like growth factor (IGF)-1, IGF-binding protein (IGFBP)-3, and their ratio in the blood may be useful for monitoring those at risk of cognitive and functional decline. However, the association between IGF measures and functional and cognitive outcomes has been mixed, and the associations may vary by sex. The present study investigated the cross-sectional, sex-specific associations between serum measures total IGF-1, IGFBP-3, and the IGF-1/IGFBP-3 ratio, gait speed, and cognition in 1320 cognitively unimpaired participants aged 50-95 years enrolled in the Mayo Clinic Study of Aging...
February 19, 2018: Neurobiology of Aging
Lara M Wierenga, Marieke G N Bos, Elisabeth Schreuders, Ferdi Vd Kamp, Jiska S Peper, Christian K Tamnes, Eveline A Crone
The onset of adolescence in humans is marked by hormonal changes that give rise to secondary sexual characteristics, noted as puberty. It has, however, proven challenging to unravel to what extent pubertal changes may have organizing effects on the brain beyond chronological age, as reported in animal studies. The present longitudinal study aimed to characterize the unique effects of age and puberty on subcortical brain volumes and included three waves of data collection at two-year intervals and 680 T1-weighted MRI scans of 271 participants (54% females) aged between 8 and 29 years old...
March 8, 2018: Psychoneuroendocrinology
Sandrina Nunes, Dalila Alves, Patrícia Barreto, Miguel Raimundo, Maria da Luz Cachulo, Cláudia Farinha, Inês Laíns, João Rodrigues, Carlos Almeida, Luísa Ribeiro, João Figueira, Lelita Santos, Rufino Silva
OBJECTIVES: This study aimed to characterize the association of lifestyle and nutritional risk profiles with age-related macular degeneration (AMD) in two subpopulations with differing AMD prevalence. METHODS: This case-control study (n = 1992) included 768 patients with AMD and 1224 age- and sex-matched participants without AMD with a single visit at a primary health care unit. Enrolled participants completed a validated lifestyle and food frequency questionnaire...
March 13, 2018: Nutrition
Jole Mariella, Eleonora Iacono, Aliai Lanci, Barbara Merlo, Caterina Palermo, Lee Morris, Carolina Castagnetti
The umbilical cord (UC), the connection between mother and fetus via the umbilical vessels, carries nutrients and oxygenated blood to the fetus through the umbilical vein and removes deoxygenated blood and waste products via the umbilical arteries. It is designed to protect blood flow to the fetus during pregnancy. In equine medicine, only a few studies have described the UC, and most of these involved Thoroughbreds. The present study describes and compares the macroscopic features of the equine umbilical cord in three different breeds and in relation to the foal's gender...
March 7, 2018: Theriogenology
Axel C Carlsson, Jan-Håkan Jansson, Stefan Söderberg, Toralph Ruge, Anders Larsson, Johan Ärnlöv
BACKGROUND AND AIMS: Soluble receptors for tumor necrosis factor alpha (sTNFR1 and sTNFR2) have been associated with cardiovascular diseases, and some evidence points towards a difference in associated risk between men and women. We aimed to study the association between sTNFR1 and sTNFR2 and incident myocardial infarctions (MI) and to explore the influence of established cardiovascular risk factors in men and women. METHODS: We conducted a nested case control study in three large Swedish cohorts, including 533 myocardial infarction cases, and 1003 age-, sex- and cohort-matched controls...
March 9, 2018: Atherosclerosis
Chia-Wen Li, Chia-Jui Yang, Hsin-Yun Sun, Mao-Song Tsai, Shih-Ping Lin, Te-Yu Lin, Chien-Yu Cheng, Yi-Chien Lee, Yu-Shan Huang, Chun-Eng Liu, Yuan-Ti Lee, Hung-Jen Tang, Ning-Chi Wang, Shu-Hsing Cheng, Wen-Chien Ko, Chien-Ching Hung
OBJECTIVE: The study aimed to describe the evolution of the seroprevalence of hepatitis C virus (HCV) among human immunodeficiency virus (HIV)-positive patients included in two cohorts in Taiwan. METHODS: We retrospectively collected the information on demographic and clinical characteristics of 4,025 and 3,856 HIV-positive Taiwanese, who were aged 18 years or older at designated hospitals around Taiwan in 2004-2007, when an outbreak of HIV infection was occurring, and 2012-2016, when the outbreak was controlled with the implementation of harm reduction program, respectively...
2018: PloS One
Bimala Sharma, Eun Woo Nam
This study aimed to assess the prevalence and correlates of condom use at last sexual intercourse among people aged 15-49 years in Nepal. Secondary data analysis was performed using the Nepal Demographic and Health Survey 2011. The study was restricted to the respondents who reported ever having had sexual intercourse; 9843 females and 3017 males were included. Condom use was assessed by asking if respondents used condoms in their most recent sexual intercourse. Chi-square test and multivariate logistic regression analysis were performed using Complex Sample Analysis Procedure to adjust for sample weight and multistage sampling design...
March 16, 2018: International Journal of Environmental Research and Public Health
Stefanie Kroeze, Pascale Ondoa, Cissy M Kityo, Margaret Siwale, Sulaimon Akanmu, Maureen Wellington, Marleen de Jager, Prudence Ive, Kishor Mandaliya, Wendy Stevens, T Sonia Boender, Marieke E de Pundert, Kim C E Sigaloff, Peter Reiss, Ferdinand W Wit, Tobias F Rinke de Wit, Raph L Hamers
OBJECTIVE: To assess incidence, determinants and clinical consequences of suboptimal immune recovery in HIV-1 infected adults in sub-Saharan Africa with sustained viral suppression on antiretroviral therapy (ART). DESIGN: Multi-country prospective cohort. METHODS: Suboptimal immune recovery was defined as proportions of participants who failed to attain clinically relevant CD4 cell count thresholds (>200, >350 and >500 cells/μL) despite sustained viral suppression on continuous first-line ART...
March 15, 2018: AIDS
Maartje Dijkstra, Rik H W Van Lunsen, Katherine W Kooij, Udi Davidovich, Rosan A Van Zoest, Ferdinand W M N Wit, Maria Prins, Peter Reiss, Maarten F Schim Van Der Loeff
INTRODUCTION: HIV-1-infected men who have sex with men (MSM) more often experience sexual dysfunctions than the general population. We assessed associations between HIV-1 status and decreased sexual functioning among MSM. METHODS: We used cross-sectional data from 399 HIV-1-infected MSM mostly on combination antiretroviral therapy (cART) and 366 HIV-1-uninfected MSM aged ≥45 years participating in the AGEhIV Cohort Study. The study questionnaire included questions on erectile function, sexual satisfaction, and sexual desire...
March 15, 2018: AIDS
Felicia C Chow, Michael R Wilson, Kunling Wu, Ronald J Ellis, Ronald J Bosch, Benjamin P Linas
OBJECTIVE: To investigate the incidence of first-ever stroke/transient ischemic attack (TIA) and associated risk factors in a cohort of persons living with HIV infection (PLWH). DESIGN: Observational cohort study METHODS:: We determined incidence rates of first-ever stroke/TIA in PLWH after ART initiation from the AIDS Clinical Trials Group ALLRT cohort and its parent trials. Poisson regression models evaluated baseline and time-varying covariates as risk factors for stroke/TIA...
March 15, 2018: AIDS
Siti Azdiah Abdul Aziz, Megan Mcstea, Nor Syuhada Ahmad Bashah, Meng Li Chong, Sasheela Ponnampalavanar, Sharifah Faridah Syed Omar, Helmi Sulaiman, Iskandar Azwa, Maw Pin Tan, Adeeba Kamarulzaman, Reena Rajasuriar, Shahrul Bahyah Kamaruzzaman
OBJECTIVES: In a clinic-based, treated HIV-infected cohort, we identified individuals with sarcopenia and compared with age, sex and ethnically matched controls; and investigated associated risk factors and health outcomes. DESIGN: Sarcopenia (age-related muscle loss) causes significant morbidity to the elderly, leading to frequent hospitalizations, disability and death. Few have characterized sarcopenia in the HIV-infected who experience accelerated aging. METHODS: Sarcopenia was defined as low muscle mass with weak grip strength and/or slow gait speed using lower 20th percentiles of controls...
March 15, 2018: AIDS
Jimena López-Arrabé, Pat Monaghan, Alejandro Cantarero, Winnie Boner, Lorenzo Pérez-Rodríguez, Juan Moreno
Oxidative stress can contribute to an acceleration of telomere erosion, leading to cellular senescence and aging. Increased investment in reproduction is known to accelerate senescence, generally resulting in reduced future reproductive potential and survival. To better understand the role played by oxidative status and telomere dynamics in the conflict between maintenance and reproduction, it is important to determine how these factors are related in parents and their offspring. We investigated the relationship between oxidative status and telomere measurements in pied flycatchers (Ficedula hypoleuca)...
May 2018: Physiological and Biochemical Zoology: PBZ
Francisco Martín Rodríguez, Cristina Fernández Pérez, Miguel Castro Villamor, José Luis Martín Conty, Pedro Arnillas Gómez, Verónica Casado Vicente
OBJECTIVES: Our aim was to determine the usefulness of level D personal protective equipment (PPE) in safeguarding health care staff who perform cardiopulmonary resuscitation (CPR). MATERIAL AND METHODS: Quasi-experimental, uncontrolled trial in 96 volunteers chosen randomly and stratified by sex, level of training, and professional category. The subjects were selected from a convenience sample of 164 nurses, physicians, and students of nursing and medicine (40 men [41...
2018: Emergencias: Revista de la Sociedad Española de Medicina de Emergencias
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