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https://www.readbyqxmd.com/read/28918533/the-associations-between-dietary-patterns-and-bone-health-according-to-the-tgf-%C3%AE-1-t869%C3%A2-c-polymorphism-in-postmenopausal-iranian-women
#1
Sajjad Moradi, Leila Khorrami-Nezhad, Sima Ali-Akbar, Fatemeh Zare, Tanaz Alipour, Azadeh Dehghani Kari Bozorg, Mir Saeed Yekaninejad, Zhila Maghbooli, Khadijeh Mirzaei
BACKGROUND/OBJECTIVE: Recent studies have shown that dietary variants and genetic variants play a decisive role in the risk of developing osteoporosis. Therefore, the objective of the present study was to examine associations between dietary pattern and bone health, according to the TGF-β1 T869→C polymorphism, in postmenopausal Iranian women. MATERIALS AND METHODS: In this study, 264 postmenopausal women aged from 46 to 78 years were examined. Body composition was measured by a body composition analyzer and physical activity by the short-form physical activity questionnaire...
September 16, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28917003/effects-of-obesity-and-diabetes-on-rate-of-bone-density-loss
#2
W D Leslie, S N Morin, S R Majumdar, L M Lix
In this large registry-based study, women with diabetes had marginally greater bone mineral density (BMD) loss at the femoral neck but not at other measurement sites, whereas obesity was not associated with greater BMD loss. Our data do not support the hypothesis that rapid BMD loss explains the increased fracture risk associated with type 2 diabetes and obesity observed in prior studies. INTRODUCTION: Type 2 diabetes and obesity are associated with higher bone mineral density (BMD) which may be less protective against fracture than previously assumed...
September 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28916840/a-novel-col1a2-c-propeptide-cleavage-site-mutation-causing-high-bone-mass-osteogenesis-imperfecta-with-a-regional-distribution-pattern
#3
T Rolvien, U Kornak, J Stürznickel, T Schinke, M Amling, S Mundlos, R Oheim
Osteogenesis imperfecta (OI) is typically characterized by low bone mass and increased bone fragility caused by heterozygous mutations in the type I procollagen genes (COL1A1/COL1A2). We report two cases of a 56-year-old woman and her 80-year-old mother who suffered from multiple vertebral and non-vertebral fractures with onset in early childhood. A full osteologic assessment including dual-energy X-ray absorptiometry (DXA), high-resolution peripheral quantitative computed tomography (HR-pQCT), and serum analyses pointed to a high bone mineral density (BMD) in the hip (DXA Z-score + 3...
September 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28913325/bone-loss-prevention-of-bisphosphonates-in-patients-with-inflammatory-bowel-disease-a-systematic-review-and-meta-analysis
#4
REVIEW
Yan Hu, Xiaoting Chen, Xiaojing Chen, Shuang Zhang, Tianyan Jiang, Jing Chang, Yanhong Gao
OBJECTIVE: The purpose of this study was to evaluate the effect of bisphosphonates in improving bone mineral density (BMD) and decreasing the occurrence rate of fractures and adverse events in patients with inflammatory bowel disease (IBD). METHODS: Randomized controlled trials (RCTs) which use bisphosphonates in IBD patients were identified in PubMed, MEDLINE database, EMBASE database, Web of Knowledge, and the Cochrane Databases between 1990 and June 2016. People received bisphosphonate or placebos with a follow-up of at least one year were also considered...
2017: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28911966/fluoxetine-administration-during-adolescence-attenuates-cognitive-and-synaptic-deficits-in-adult-3%C3%A3-tgad-mice
#5
Dong-Sheng Sun, Li-Feng Gao, Li Jin, Hao Wu, Qun Wang, You Zhou, Shuhao Fan, Xia Jiang, Dan Ke, Hao Lei, Jian-Zhi Wang, Gong-Ping Liu
Fluoxetine (FLX) has broad neurobiological functions and neuroprotective effects; however, the preventive effects of FLX on cognitive impairments in Alzheimer's disease (AD) have not been reported. Here, we studied whether adolescent administration of fluoxetine can prevent memory deficits in AD transgenic mice that harbour PS1m146v, APPswe and TauP301L mutations (3 × TgAD). FLX was applied through peritoneal injection to the mice at postnatal day 35 (p35) for 15 consecutive days, and the effects of FLX were observed at 6-month...
September 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28911145/bone-mineral-density-after-cessation-of-gh-treatment-in-young-adults-born-sga-a-5-year-longitudinal-study
#6
Carolina C J Smeets, Manouk van der Steen, Judith S Renes, Anita C S Hokken-Koelega
Context: Short children born small for gestational age (SGA) have below-average bone mineral density (BMD). Growth hormone (GH) treatment improves height and BMD in short SGA children. Longitudinal data on BMD in adults born SGA, after GH cessation (GH-stop), are lacking. Objective: To determine BMD in young adults born SGA during 5 years after GH-stop. Methods: In 173 GH-treated adults born SGA (SGA-GH), BMD of total body (BMDTB) and bone mineral apparent density of lumbar spine (BMADLS) were measured longitudinally at adult height (AH) and 6 months, 2 years, and 5 years thereafter...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28903900/genetics-association-study-and-functional-analysis-on-osteoporosis-susceptibility-gene-bdnf
#7
Man Yang, Bing-Jie Lu, Yuan-Yuan Duan, Xiao-Feng Chen, Jian-Gang Ma, Yan Guo
To explore the relationship between brain-derived neurotrophic factor (BDNF) gene and bone mineral density (BMD) in Chinese Han population, we performed association analysis of 14 tag SNPs on BDNF gene with hip/spine BMD in 1300 Han Chinese samples from Shaanxi Province. We found that 8 of the 14 SNPs were significantly associated with hip or spine BMD (P < 0.05). Moreover, the SNP rs16917237 was significantly associated with both hip and spine BMD, with significant Bonferroni correlation (P value 0.05/14 = 0...
August 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28901203/the-role-of-monocyte-percentage-in-osteoporosis-in-male-rheumatic-diseases
#8
Yu-Jih Su, Chao Tung Chen, Nai-Wen Tsai, Chih-Cheng Huang, Hung-Chen Wang, Chia-Te Kung, Wei-Che Lin, Ben-Chung Cheng, Chih-Min Su, Sheng-Yuan Hsiao, Cheng-Hsien Lu
Osteoporosis is easily overlooked in male patients, especially in the field of rheumatic diseases mostly prevalent with female patients, and its link to pathogenesis is still lacking. Attenuated monocyte apoptosis from a transcriptome-wide expression study illustrates the role of monocytes in osteoporosis. This study tested the hypothesis that the monocyte percentage among leukocytes could be a biomarker of osteoporosis in rheumatic diseases. Eighty-seven males with rheumatic diseases were evaluated in rheumatology outpatient clinics for bone mineral density (BMD) and surrogate markers, such as routine peripheral blood parameters and autoantibodies...
September 1, 2017: American Journal of Men's Health
https://www.readbyqxmd.com/read/28899992/depletion-of-progranulin-reduces-glun2b-containing-nmda-receptor-density-tau-phosphorylation-and-dendritic-arborization-in-mouse-primary-cortical-neurons
#9
Francesca Longhena, Michela Zaltieri, Jessica Grigoletto, Gaia Faustini, Luca La Via, Roberta Ghidoni, Luisa Benussi, Cristina Missale, PierFranco Spano, Arianna Bellucci
Loss-of-function mutations in the progranulin (PGRN) gene are a common cause of familial frontotemporal lobar degeneration (FTLD). This an age-related neurodegenerative disorder characterized by brain atrophy in the frontal and temporal lobes and with typical symptoms such as cognitive and memory impairment, profound behavioral abnormalities and personality changes, that are thought to be related to connectome dysfunctions. Recently, PGRN reduction has been found to induce a behavioural phenotype reminiscent of FTLD symptoms in mice by affecting neuron spine density and morphology, suggesting that the protein can influence neuronal structural plasticity...
September 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28894789/impact-of-the-mk-vi-skinsuit-on-skin-microbiota-of-terrestrial-volunteers-and-an-international-space-station-bound-astronaut
#10
Richard A Stabler, Helena Rosado, Ronan Doyle, David Negus, Philip A Carvil, Juan G Kristjánsson, David A Green, Rafael Franco-Cendejas, Cadi Davies, Andreas Mogensen, Jonathan Scott, Peter W Taylor
Microgravity induces physiological deconditioning due to the absence of gravity loading, resulting in bone mineral density loss, atrophy of lower limb skeletal and postural muscles, and lengthening of the spine. SkinSuit is a lightweight compression suit designed to provide head-to-foot (axial) loading to counteract spinal elongation during spaceflight. As synthetic garments may impact negatively on the skin microbiome, we used 16S ribosomal RNA (rRNA) gene amplicon procedures to define bacterial skin communities at sebaceous and moist body sites of five healthy male volunteers undergoing SkinSuit evaluation...
2017: NPJ Microgravity
https://www.readbyqxmd.com/read/28894687/the-pedicles-are-not-the-densest-regions-of-the-lumbar-vertebrae-implications-for-bone-quality-assessment-and-surgical-treatment-strategy
#11
Eric A Hohn, Bryant Chu, Audrey Martin, Elizabeth Yu, Connor Telles, Jeremi Leasure, Tennyson L Lynch, Dimitriy Kondrashov
STUDY DESIGN: Cadaver study. OBJECTIVE: To determine the bone density of lumbar vertebral anatomic subregions. Bone mineral density (BMD) is a major factor in osseous fixation construct strength. The standard region for implant fixation of the spine is the pedicle; however, other regions may be more viable options with higher bone quality. METHODS: Using computed tomography images, the spine was digitally isolated by applying a filter for adult bone...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28893875/duration-of-antiresorptive-activity-of-zoledronate-in-postmenopausal-women-with-osteopenia-a-randomized-controlled-multidose-trial
#12
RANDOMIZED CONTROLLED TRIAL
Andrew Grey, Mark J Bolland, Anne Horne, Borislav Mihov, Greg Gamble, Ian R Reid
BACKGROUND: Intravenous zoledronate 5 mg annually reduces fracture risk, and 5 mg every 2 years prevents bone loss, but the optimal dosing regimens for these indications are uncertain. METHODS: We conducted a 3-year open-label extension of a 2-year randomized, placebo-controlled, double-blind study. Late postmenopausal women with osteopenia were assigned to receive a single baseline dose of 1 mg, 2.5 mg or 5 mg of zoledronate or placebo. The primary outcome was change in spine bone mineral density (BMD)...
September 11, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28893468/chinese-herbal-medicine-for-osteoporosis-a-meta-analysis-of-randomized-controlled-trials
#13
REVIEW
Yong-Xiang Jin, Peng Wu, Yi-Fan Mao, Bo Wang, Jia-Feng Zhang, Wen-Liang Chen, Zhong Liu, Xiao-Lin Shi
Osteoporosis is a major public health problem in the elderly population. Several studies have suggested that Chinese herbal medicine has antiosteoporotic activities that might be beneficial for osteoporosis. This study aimed to assess the effectiveness of Chinese herbal medicine in osteoporosis patients. We comprehensively searched for randomized controlled trials (until December 2016) that compared Chinese herbal medicine with Western medicine in adults with osteoporosis and reported bone mineral densities (BMDs)...
September 8, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28892067/association-of-the-serotonin-transporter-linked-polymorphic-region-genotype-with-lower-bone-mineral-density
#14
M I Lapid, S Kung, M A Frye, J M Biernacka, J R Geske, M T Drake, M D Jankowski, B L Clarke
The serotonin transporter-linked polymorphic region (5-HTTLPR) of the serotonin transporter gene (SLC6A4) S allele is linked to pathogenesis of depression and slower response to selective serotonin reuptake inhibitors (SSRIs); depression and SSRIs are independently associated with bone loss. We aimed to determine whether 5-HTTLPR was associated with bone loss. This cross-sectional study included psychiatric patients with both 5-HTTLPR analysis and bone mineral density (BMD) assessment (hip and spine Z-scores if age <50 years and T-scores if ⩾50 years)...
August 22, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28889244/lumbar-subtotal-corpectomy-non-fusion-model-produced-using-a-novel-prosthesis
#15
Jiantao Liu, Feng Zhang, Zhengchao Gao, Yuhuan Li, Binbin Niu, Xijing He
OBJECTIVE: In this study, we aimed to design a movable artificial lumbar complex (MALC) prosthesis for non-fusion reconstruction after lumbar subtotal corpectomy and to establish an in vitro anterolateral lumbar corpectomy non-fusion model for evaluating the biomechanical stability, preservation of segment movements and influence on adjacent inter-vertebral movements of this prosthesis. METHODS: Imaging was performed on a total of 26 fresh goat lumbar spine specimens to determine which of the specimens did not meet the requirements (free of deformity and fractures); the residual specimens were randomly divided into an intact group, a fusion group and a non-fusion group...
September 9, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28889007/selective-deletion-of-the-oxytocin-gene-remodels-the-number-and-shape-of-dendritic-spines-in-the-medial-amygdala-of-males-with-and-without-sexual-experience
#16
Roberta Oriques Becker, Alberto A Rasia-Filho, Márcia Giovenardi
Oxytocin has central actions that modulate synaptic plasticity and the occurrence of social behavior in rodents. The posterodorsal medial amygdala (MePD) composes a sexually dimorphic neural circuit for the display of male sexual behavior. Local dendritic spines are notably plastic and affected by context-dependent social stimuli. Here, we examined the effects of the selective deletion of the OT gene (OTKO) in the number and shape of Golgi-impregnated dendritic spines in the MePD of näive and sexually experienced (SexExp) male mice (n=6 each group)...
September 6, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28883860/impact-of-beverage-consumption-age-and-site-dependency-on-dual-energy-x-ray-absorptiometry-dexa-measurements-in-perimenopausal-women-a-prospective-study
#17
Huan-Chu Lo, Duen-Pang Kuo, Yen-Lin Chen
INTRODUCTION: The aim of this study was to determine the best site for bone mineral density (BMD) measurements based on T-scores, age, and beverage consumption. MATERIAL AND METHODS: In this prospective study, 271 women stratified by age (average age: 61.9 years) underwent dual energy X-ray absorptiometry (DEXA) scanning of their lumbar spine, hips, and forearms. Osteoporosis was defined as a BMD of 2.5 standard deviations or more below the mean peak bone mass based on a reference population of adult women (translated as a T-score ≤ -2...
August 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28883020/increased-gsnor-expression-during-aging-impairs-cognitive-function-and-decreases-s-nitrosation-of-camkii%C3%AE
#18
Yuying Zhang, Kaiyuan Wu, Wenting Su, Deng-Feng Zhang, Ping Wang, Xinhua Qiao, Qin Yao, Zengqiang Yuan, Yong-Gang Yao, Guanghui Liu, Chen Zhang, Limin Liu, Chen Chang
As the population ages, an increasing number of people suffer from age-related cognitive impairment. However, the mechanisms underlying this process remain unclear. Here, we found that S-nitrosoglutathione reductase (GSNOR), the key enzyme that metabolizes intracellular nitric oxide (NO) and regulates S-nitrosation, was significantly increased in the hippocampus of both aging humans and mice. Transgenic mice overexpressing GSNOR exclusively in neurons showed cognitive impairment in behavioral tests, including the Morris water maze, fear conditioning and the Y-maze test...
September 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28882412/a-flavonoid-agonist-of-the-trkb-receptor-for-bdnf-improves-hippocampal-neurogenesis-and-hippocampus-dependent-memory-in-the-ts65dn-mouse-model-of-ds
#19
Fiorenza Stagni, Andrea Giacomini, Sandra Guidi, Marco Emili, Beatrice Uguagliati, Maria Elisa Salvalai, Valeria Bortolotto, Mariagrazia Grilli, Roberto Rimondini, Renata Bartesaghi
Intellectual disability is the unavoidable hallmark of Down syndrome (DS), with a heavy impact on public health. Reduced neurogenesis and impaired neuron maturation are considered major determinants of altered brain function in DS. Since the DS brain starts at a disadvantage, attempts to rescue neurogenesis and neuron maturation should take place as soon as possible. The brain-derived neurotrophic factor (BDNF) is a neurotrophin that plays a key role in brain development by specifically binding to tropomyosin-related kinase receptor B (TrkB)...
September 4, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28880744/the-effects-of-phenylethanoid-glycosides-derived-from-herba-cistanche-on-cognitive-deficits-and-antioxidant-activities-in-male-samp8-mice
#20
Jian-Xin Jia, Xu-Sheng Yan, Zhi-Ping Cai, Wei Song, Dong-Sheng Huo, Bai-Feng Zhang, He Wang, Zhan-Jun Yang
Cognitive deficits are closely associated with hippocampal synaptic changes. Phenylethanoid glycosides (PhG), derived from Herba cistanche, are known to exert protective effects on cognitive deficits in Alzheimer's disease (AD); however, the underlying mechanisms of this herbal extract on cognitive performance remain unclear. The aim of this study was thus to examine the protective mechanism attributed to PhG on cognitive deficits in an AD senescence accelerated mouse prone 8 (SAMP8) model. Cognitive deficit parameters examined included (1) Morris water maze (MWM) assessing cognitive performance and (2) quantification of dendritic spine density in hippocampal CA1 region by Golgi staining, a molecular biomarker of synaptic function...
September 7, 2017: Journal of Toxicology and Environmental Health. Part A
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