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osteoporosis and running

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https://www.readbyqxmd.com/read/28669122/validation-of-a-dice-simulation-against-a-discrete-event-simulation-implemented-entirely-in-code
#1
Jörgen Möller, Sarah Davis, Matt Stevenson, J Jaime Caro
BACKGROUND: Modeling is an essential tool for health technology assessment, and various techniques for conceptualizing and implementing such models have been described. Recently, a new method has been proposed-the discretely integrated condition event or DICE simulation-that enables frequently employed approaches to be specified using a common, simple structure that can be entirely contained and executed within widely available spreadsheet software. To assess if a DICE simulation provides equivalent results to an existing discrete event simulation, a comparison was undertaken...
July 1, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28656107/the-cooccurrence-of-obesity-osteoporosis-and-sarcopenia-in-the-ovariectomized-rat-a-study-for-modeling-osteosarcopenic-obesity-in-rodents
#2
Zahra Ezzat-Zadeh, Jeong-Su Kim, P Bryant Chase, Bahram H Arjmandi
BACKGROUND: Obesity, osteoporosis, and sarcopenia may individually occur due to age-related gradual alterations in body composition. This study investigates the cooccurrence of these age-related diseases in female animals with low levels of ovarian hormone in the absence of complex multifactorial process of chronological aging. METHODS: Thirty-six 5- and 10-month-old female rats were chosen to model pre- and postmenopausal women, respectively. Rats were divided into three treatment groups in each age category-sham, ovariectomized (ovx), and ovx + E2 (17β-estradiol, 10 μg/kg)-and were pair-fed...
2017: Journal of Aging Research
https://www.readbyqxmd.com/read/28389933/effect-of-radiation-dose-reduction-on-texture-measures-of-trabecular-bone-microstructure-an-in-vitro-study
#3
Muthu Rama Krishnan Mookiah, Thomas Baum, Kai Mei, Felix K Kopp, Georg Kaissis, Peter Foehr, Peter B Noel, Jan S Kirschke, Karupppasamy Subburaj
Osteoporosis is characterized by bone loss and degradation of bone microstructure leading to fracture particularly in elderly people. Osteoporotic bone degeneration and fracture risk can be assessed by bone mineral density and trabecular bone score from 2D projection dual-energy X-ray absorptiometry images. However, multidetector computed tomography image based quantification of trabecular bone microstructure showed significant improvement in prediction of fracture risk beyond that from bone mineral density and trabecular bone score; however, high radiation exposure limits its use in routine clinical in vivo examinations...
April 7, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28374174/serum-sclerostin-increases-after-acute-physical-activity
#4
Marie-Eva Pickering, Marie Simon, Elisabeth Sornay-Rendu, Karim Chikh, Marie-Christine Carlier, Anne-Lise Raby, Pawel Szulc, Cyrille B Confavreux
Physical activity has a major impact on bone density and on osteoporosis prevention. Sclerostin is produced by osteocytes and inhibits bone formation. The impact of exercise on sclerostin secretion has not been studied so far. This pilot study aimed to explore circulating sclerostin levels immediately after acute exercise. Healthy young women practicing physical activity less than 120 min per week were enrolled. The exercise was a 45-min, low-speed, treadmill running test. Blood samples were taken at rest before exercise and within 5 min after the end of exercise...
April 3, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28064225/influence-of-mechanical-force-on-bone-matrix-proteins-in-ovariectomised-mice-and-osteoblast-like-mc3t3-e1-cells
#5
Meng Zhang, Shintaro Ishikawa, Tomoko Inagawa, Hideshi Ikemoto, Shiyu Guo, Masataka Sunagawa, Tadashi Hisamitsu
AIM: To investigate the effect of mechanical stress on periostin and semaphorin-3A expression in a murine model of postmenopausal osteoporosis and in osteoblast-like MC3T3-E1 cells. MATERIALS AND METHODS: Female mice were divided into three groups and treated with a sham operation, ovariectomy (OVX) or OVX plus treadmill training (OVX+Run). After 10 weeks, tibias were used for histological analysis. MC3T3-E1 cells were burdened by mechanical stress using a centrifuge or were treated with periostin, and the production of biologically-active semaphorin-3A was examined in vitro...
January 2, 2017: In Vivo
https://www.readbyqxmd.com/read/28056595/concomitant-and-previous-osteoporotic-vertebral-fractures
#6
Markus Lenski, Natalie Büser, Michael Scherer
Background and purpose - Patients with osteoporosis who present with an acute onset of back pain often have multiple fractures on plain radiographs. Differentiation of an acute osteoporotic vertebral fracture (AOVF) from previous fractures is difficult. The aim of this study was to investigate the incidence of concomitant AOVFs and previous OVFs in patients with symptomatic AOVFs, and to identify risk factors for concomitant AOVFs. Patients and methods - This was a prospective epidemiological study based on the Registry of Pathological Osteoporotic Vertebral Fractures (REPAPORA) with 1,005 patients and 2,874 osteoporotic vertebral fractures, which has been running since February 1, 2006...
April 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/27935995/into-the-bowels-of-depression-unravelling-medical-symptoms-associated-with-depression-by-applying-machine-learning-techniques-to-a-community-based-population-sample
#7
Joanna F Dipnall, Julie A Pasco, Michael Berk, Lana J Williams, Seetal Dodd, Felice N Jacka, Denny Meyer
BACKGROUND: Depression is commonly comorbid with many other somatic diseases and symptoms. Identification of individuals in clusters with comorbid symptoms may reveal new pathophysiological mechanisms and treatment targets. The aim of this research was to combine machine-learning (ML) algorithms with traditional regression techniques by utilising self-reported medical symptoms to identify and describe clusters of individuals with increased rates of depression from a large cross-sectional community based population epidemiological study...
2016: PloS One
https://www.readbyqxmd.com/read/27852187/prevention-of-breast-cancer
#8
REVIEW
Ian N Olver
Modifiable lifestyle factors may reduce the risk of developing breast cancer. Obesity is associated particularly with post-menopausal breast cancer. Diet is important, and exercise equivalent to running for up to 8 hours each week reduces the risk of breast cancer, both in its own right and through reducing obesity. Alcohol consumption may be responsible for 5.8% of breast cancers in Australia and it is recommended to reduce this to two standard drinks per day. Drinking alcohol and smoking increases the risk for breast cancer and, therefore, it is important to quit tobacco smoking...
November 21, 2016: Medical Journal of Australia
https://www.readbyqxmd.com/read/27661008/treadmill-running-exercise-prevents-senile-osteoporosis-and-upregulates-the-wnt-signaling-pathway-in-samp6-mice
#9
Xi Chen, Lihui Li, Jianmin Guo, Lingli Zhang, Yu Yuan, Binglin Chen, Zhongguang Sun, Jiake Xu, Jun Zou
This study examined the effects of different exercise intensities and durations on bone mineral density (BMD) and bone strength in senescence-accelerated mouse prone 6 (SAMP6) and determined the involvement of the Wnt signaling pathway in exercise-induced osteogenesis. Three-month-old male SAMP6 mice were randomly assigned to different speeds of treadmill running exercise representing low, medium and high intensity, with the duration of five and nine weeks, respectively. We showed that medium-intensity exercise had positive effects on skeletal health, including BMD and bone strength, and the efficacy was higher than that of low-intensity exercise...
November 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27504361/the-effect-of-some-polymorphisms-in-vitamin-d-receptor-gene-in-menopausal-women-with-osteoporosis
#10
Morteza Dehghan, Razieh Pourahmad-Jaktaji
INTRODUCTION: Vitamin D receptor gene is one of candidate genes related to osteoporosis expansion. The association of ApaI, TaqI, BsmI polymorphisms in vitamin D receptor gene with bone metabolism and density has been area of interest in many studies. AIM: This study was conducted to further investigate the association between the ApaI, TaqI, BsmI polymorphisms and bone density. This study was analytical study. Centers for bone density measurement in southwestern Iran...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27310096/rheumatologic-and-extraintestinal-manifestations-of-inflammatory-bowel-diseases
#11
REVIEW
Ripalta Colìa, Addolorata Corrado, Francesco Paolo Cantatore
Inflammatory bowel diseases (IBDs) often present as a complex inflammatory process wherein colon lesions (ulcerative colitis, UC) or widespread ulceration and fissure (Crohn's disease, CD) might be accompanied by ancillary extraintestinal manifestations (EIMs) that could involve almost every organ system, but also by autoimmune disorders ranging from psoriasis and rheumatoid arthritis to connective tissue diseases. Certain EIMs are more common related to the activity of the IBD (joint, skin, ocular and oral manifestations), other EIMs typically run a course independent of the IBD activity (hepatobiliary disorders) and some are non-specific disorders (osteoporosis and amyloidosis)...
December 2016: Annals of Medicine
https://www.readbyqxmd.com/read/27098383/combination-of-weight-bearing-training-and-anti-mstn-polyclonal-antibody-improve-bone-quality-in-rats
#12
Liang Tang, Xiaohang Gao, Xiaoying Yang, Didi Zhang, Xiaojun Zhang, Haiping Du, Yanqi Han, Lijun Sun
Weight-bearing exercise is beneficial to bone health. Myostatin (MSTN) deficiency has a positive effect on bone formation. We wondered if a combination of weight-bearing training and polyclonal antibody for MSTN (MsAb) would augment bone formation to a greater degree than single treatment. In this study, rats were randomly assigned to four groups: Control, weight-bearing training (WT), MsAb, and WT+MsAb. The trained rats ran at 15 m/min bearing with 35% of their body weight, 40 min/day (2 min of running followed by 2 min of rest), 6 days/week, for 8 weeks...
December 2016: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27033288/a-curious-case-of-stress-fracture-in-a-transsexual-athlete
#13
Tom Richardson, Michael Grant, Prakash Chandran
Femoral neck stress fractures in young healthy individuals are rare and occur in those who take part in physical training with repetitive loading and those with osteoporosis. Bone density is related to sex hormone status, which is artificially manipulated during gender reassignment. Conflicting evidence currently exists on the effect of cross sex hormone treatment on bone density, with no literature suggesting a link between hormone treatment in gender reassignment and stress fractures. Our aim is to highlight the potential risk of stress fractures amongst transsexual patients receiving cross sex hormones as part of gender reassignment...
March 31, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27022545/osteoporosis-diagnosis-and-treatment
#14
Márcio Passini Gonçalves de Souza
Articles that update the state of knowledge regarding osteoporosis run the risk of quickly becoming obsolete because research and studies on osteoporosis today are arousing great interest among researchers, the pharmaceutical and medical equipment industries, governments and even WHO. All orthopedists know about osteoporosis because of its most deleterious effect: osteoporotic fracture. Osteoporosis without fractures does not arouse suspicion because this is a pathological condition with a nonspecific clinical profile...
May 2010: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/26930021/why-perimenopausal-women-should-consider-to-use-a-levonorgestrel-intrauterine-system
#15
Dirk Wildemeersch
OBJECTIVE: The use of a levonorgestrel intrauterine system (LNG-IUS) is useful in preventing pregnancy and for the treatment of menstrual disturbances. A smooth or symptom-free transition to and through menopause is possible when LNG-IUS is combined with estrogen therapy. Unfortunately the majority of physicians are generally unaware of this usefulness combined hormonal therapy in the pre-, peri- and postmenopausal women. DESIGN AND METHOD: Based on long-term clinical experience with LNG-IUS in the form of Femilis®, 104 women where followed from the premenopause through the menopausal transition into the postmenopause...
August 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/26899180/serum-nitrate-and-nitrite-are-associated-with-the-prevalence-of-various-chronic-diseases-except-cancer
#16
Nadezhda G Gumanova, Alexander D Deev, Marina V Klimushina, Alexander Y Kots, Svetlana A Shalnova
BACKGROUND: Nitric oxide and its metabolites, nitrate and nitrite, are important regulators linked to various diseases. We studied the association of fasting serum concentrations of nitrate and nitrite, combined as NOx, without special diet, with the prevalence of various chronic diseases. METHODS: Fasting concentrations of NOx were assayed in a cohort of 1087 patients recruited to Stress Aging and Health in Russia study that represents male and female population in Moscow, Russia, over 55 years of age...
April 2017: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/26676632/-fls-three-letters-alter-secondary-fracture-prevention
#17
N Suhm, C Meier, M Kraenzlin, E Kungler, B Savic, S Mueller, M Jakob, D Rikli
The increasing importance of preventive measures in the field of orthopedics and trauma surgery becomes apparent because of the demographic changes and the high risk for secondary fractures following osteoporotic fractures. Within the fracture treatment chain, orthopedics and trauma surgery are in the "pole position" to initiate these measures in geriatric patients. In the past orthopedists and trauma surgeons have constantly accused of neglecting secondary fracture prevention in fragility fracture patients...
January 2016: Der Unfallchirurg
https://www.readbyqxmd.com/read/26510846/hip-fractures-preceding-distal-radius-fractures-and-screening-for-osteoporosis-should-we-be-screening-earlier-a-minimum-10-year-retrospective-cohort-study-at-a-single-centre
#18
Z J Daruwalla, S S Huq, K L Wong, P Y Nee, K M Leong, K R Pillay, D P Murphy
UNLABELLED: Both men and women who sustain a fracture of the distal forearm run an increased risk of sustaining a subsequent hip fracture. Our study implies that these patients may not necessarily constitute a group in which osteoporosis screening is warranted. INTRODUCTION: People who sustain a distal radius fracture run an increased risk of sustaining a subsequent hip fracture. However, many institutions only screen for osteoporosis at the time of a hip fracture...
January 2016: Osteoporosis International
https://www.readbyqxmd.com/read/26448063/interaction-between-physical-activity-and-smoking-on-lung-muscle-and-bone-in-mice
#19
Nele Cielen, Karen Maes, Nele Heulens, Thierry Troosters, Geert Carmeliet, Wim Janssens, Ghislaine N Gayan-Ramirez
Physical inactivity is an important contributor to skeletal muscle weakness, osteoporosis, and weight loss in chronic obstructive pulmonary disease. However, the effects of physical inactivity, in interaction with smoking, on lung, muscle, and bone are poorly understood. To address this issue, male mice were randomly assigned to an active (daily running), moderately inactive (space restriction), or extremely inactive group (space restriction followed by hindlimb suspension to mimic bed rest) during 24 weeks and simultaneously exposed to either cigarette smoke or room air...
May 2016: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/26445510/beyond-hit-and-run-stem-cells-leave-a-lasting-memory
#20
COMMENT
Kelvin S Ng, Thomas M Kuncewicz, Jeffrey M Karp
While mesenchymal stem cells (MSCs) are rapidly cleared from the body following systemic transplantation, their therapeutic benefits typically persist. In this issue, Liu et al. (2015) reveal that the ability of transplanted MSCs to alleviate osteoporosis in systemic lupus erythematosus is maintained through epigenetic changes conferred by secretory action of the MSCs.
October 6, 2015: Cell Metabolism
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