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https://www.readbyqxmd.com/read/28642856/longitudinal-change-in-trabecular-bone-score-during-and-after-treatment-of-osteoporosis-in-postmenopausal-korean-women
#1
Mi-Seon Shin, Eun-Hee Cho, Ha Young Kim
BACKGROUND: The aim of this study was to evaluate the longitudinal changes of trabecular bone score (TBS) during and after bisphosphonate (BP) treatment in postmenopausal Korean women with osteoporosis. METHODS: We analyzed 191 patients who took BP and underwent bone mineral density (BMD) test for the period from January 2010 to December 2015. The mean follow up period during treatment and after treatment was 22.8 months and 18 months, respectively. The TBS and BMD values were evaluated by the percent changes relative to the baseline...
May 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28642854/measurement-uncertainty-in-spine-bone-mineral-density-by-dual-energy-x-ray-absorptiometry
#2
Ae-Ja Park, Jun-Il Yoo, Jee-Hye Choi, Kyun Shik Chae, Chang Geun Kim, Dal Sik Kim
BACKGROUND: The purpose of this study was to calculate the measurement uncertainty of the process of bone mineral density (BMD) analysis using dual energy X-ray absorptiometry with traceability. METHODS: Between March 2015 and October 2016, among healthy participants in their 20s and 30s, the study included those who had not taken calcium, vitamin D supplements and steroids and were without a history of osteoporosis, osteopenia and diseases related to osteoporosis...
May 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28642852/fracture-preventing-effects-of-maxmarvil%C3%A2-tablets-alendronate-5-mg-calcitriol-0-5-%C3%A2%C2%B5g-in-patients-with-osteoporosis
#3
Jun-Il Yoo, Yong-Chan Ha, Ye-Yeon Won, Kyu-Hyun Yang, Sang-Bum Kim, Ju-Hyung Yoo, Dong-Soo Kim
BACKGROUND: The purpose of this prospective, open-label, observational study was to assess the fracture preventing effect of Maxmarvil® tablets (alendronate 5 mg + calcitriol 0.5 µg) in patients with osteoporosis and to evaluate the change in bone mineral density (BMD) at the minimum 1-year follow-up. METHODS: In this multicenter observational study, 691 patients with osteoporosis (aged 50 years or older) were treated with alendronate 5 mg + calcitriol 0.5 µg/day during their normal course of care...
May 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28642689/integrating-neural-circuits-controlling-female-sexual-behavior
#4
REVIEW
Paul E Micevych, Robert L Meisel
The hypothalamus is most often associated with innate behaviors such as is hunger, thirst and sex. While the expression of these behaviors important for survival of the individual or the species is nested within the hypothalamus, the desire (i.e., motivation) for them is centered within the mesolimbic reward circuitry. In this review, we will use female sexual behavior as a model to examine the interaction of these circuits. We will examine the evidence for a hypothalamic circuit that regulates consummatory aspects of reproductive behavior, i...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28642011/comparison-of-indian-council-for-medical-research-and-lunar-databases-for-categorization-of-male-bone-mineral-density
#5
Surya K Singh, Vivek Patel, Balram Gupta
The mainstay of diagnosis of osteoporosis is dual-energy X-ray absorptiometry (DXA) scan measuring areal bone mineral density (BMD) (g/cm(2)). The aim of the present study was to compare the Indian Council of Medical Research database (ICMRD) and the Lunar ethnic reference database of DXA scans in the diagnosis of osteoporosis in male patients. In this retrospective study, all male patients who underwent a DXA scan were included. The areal BMD (g/cm(2)) was measured at either the lumbar spine (L1-L4) or the total hip using the Lunar DXA machine (software version 8...
June 19, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28641933/the-role-of-sleep-in-regulating-structural-plasticity-and-synaptic-strength-implications-for-memory-and-cognitive-function
#6
REVIEW
Frank Raven, Eddy A Van der Zee, Peter Meerlo, Robbert Havekes
Dendritic spines are the major sites of synaptic transmission in the central nervous system. Alterations in the strength of synaptic connections directly affect the neuronal communication, which is crucial for brain function as well as the processing and storage of information. Sleep and sleep loss bidirectionally alter structural plasticity, by affecting spine numbers and morphology, which ultimately can affect the functional output of the brain in terms of alertness, cognition, and mood. Experimental data from studies in rodents suggest that sleep deprivation may impact structural plasticity in different ways...
May 18, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28641114/a-critical-role-of-presynaptic-cadherin-catenin-p140cap-complexes-in-stabilizing-spines-and-functional-synapses-in-the-neocortex
#7
Min-Yin Li, Wan-Ying Miao, Qiu-Zi Wu, Shun-Ji He, Guoquan Yan, Yanrui Yang, Jia-Jia Liu, M Mark Taketo, Xiang Yu
The formation of functional synapses requires coordinated assembly of presynaptic transmitter release machinery and postsynaptic trafficking of functional receptors and scaffolds. Here, we demonstrate a critical role of presynaptic cadherin/catenin cell adhesion complexes in stabilizing functional synapses and spines in the developing neocortex. Importantly, presynaptic expression of stabilized β-catenin in either layer (L) 4 excitatory neurons or L2/3 pyramidal neurons significantly upregulated excitatory synaptic transmission and dendritic spine density in L2/3 pyramidal neurons, while its sparse postsynaptic expression in L2/3 neurons had no such effects...
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28640843/metabolic-milieu-associates-with-impaired-skeletal-characteristics-in-obesity
#8
Heli T Viljakainen, Heikki A Koistinen, Taina Tervahartiala, Timo Sorsa, Sture Andersson, Outi Mäkitie
High leptin concentration, low-grade inflammation, and insulin resistance often coexist in obese subjects; this adverse metabolic milieu may be the main culprit for increased fracture risk and impaired bone quality seen in patients with type 2 diabetes. We examined the associations of leptin, hs (high sensitivity)- CRP and insulin resistance with bone turnover markers (BTMs) and bone characteristics in 55 young obese adults (median BMI 40 kg/m2) and 65 non-obese controls. Mean age of the subjects was 19.5 ± 2...
2017: PloS One
https://www.readbyqxmd.com/read/28639995/recovery-of-bone-mineral-density-following-discontinuation-of-tenofovir-based-hiv-pre-exposure-prophylaxis
#9
David V Glidden, Kathleen Mulligan, Vanessa McMahan, Peter L Anderson, Juan Guanira, Suwat Chariyalertsak, Susan P Buchbinder, Linda Gail Bekker, Mauro Schechter, Beatriz Grinsztejn, Robert M Grant
BACKGROUND: Oral tenofovir disoproxil fumarate (TDF) for HIV prevention and treatment is associated with decreases in bone mineral density (BMD). Previous reports suggest that these changes may be reversible after discontinuation of TDF. SETTING: A metabolic substudy of 498 participants in a randomized, placebo-controlled HIV prevention trial of oral co-formulated TDF with emtricitabine (TDF/FTC, Truvada®) for HIV preexposure prophylaxis (PrEP) enrolling a global sample of men who have sex with men and trans women...
June 19, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28639157/exercise-for-improving-bone-health-in-women-treated-for-stages-i-iii-breast-cancer-a-systematic-review-and-meta-analyses
#10
REVIEW
Canan P Fornusek, Sharon L Kilbreath
PURPOSE: The purpose of this study was to evaluate the efficacy of exercise, either alone or in combination with other interventions, compared to a control, for the preservation of bone mineral density (BMD) in early breast cancer (BC) patients. METHODS: A systematic search was conducted to identify randomized or quasi-randomized trials which met inclusion criteria including prescribed exercise for ≥12 months. Ten publications from seven randomized controlled trials (RCTs), involving 1199 participants, were identified...
June 21, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28639046/is-multidetector-ct-based-bone-mineral-density-and-quantitative-bone-microstructure-assessment-at-the-spine-still-feasible-using-ultra-low-tube-current-and-sparse-sampling
#11
Kai Mei, Felix K Kopp, Rolf Bippus, Thomas Köhler, Benedikt J Schwaiger, Alexandra S Gersing, Andreas Fehringer, Andreas Sauter, Daniela Münzel, Franz Pfeiffer, Ernst J Rummeny, Jan S Kirschke, Peter B Noël, Thomas Baum
OBJECTIVE: Osteoporosis diagnosis using multidetector CT (MDCT) is limited to relatively high radiation exposure. We investigated the effect of simulated ultra-low-dose protocols on in-vivo bone mineral density (BMD) and quantitative trabecular bone assessment. MATERIALS AND METHODS: Institutional review board approval was obtained. Twelve subjects with osteoporotic vertebral fractures and 12 age- and gender-matched controls undergoing routine thoracic and abdominal MDCT were included (average effective dose: 10 mSv)...
June 21, 2017: European Radiology
https://www.readbyqxmd.com/read/28638994/adherence-to-mediterranean-diet-in-relation-to-bone-mineral-density-and-risk-of-fracture-a-systematic-review-and-meta-analysis-of-observational-studies
#12
Hanieh Malmir, Parvane Saneei, Bagher Larijani, Ahmad Esmaillzadeh
PURPOSE: We aimed to systematically review available data on the association between adherence to MD and BMD as well as risk of fractures and to summarize this information through a meta-analysis. METHODS: Previous studies in the field of adherence to MD in relation to BMD and risk of fracture were selected through searching PubMed, Scopus, ISI Web of Science and Google Scholar databases prior to June, 2016 using Mesh and non-Mesh relevant keywords. RESULTS: In the meta-analysis of four effect sizes, obtained from three studies, we found that adherence to MD was associated with a 21% reduced risk of hip fracture (overall RR 0...
June 21, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28636875/effects-of-prenatal-binge-like-ethanol-exposure-and-maternal-stress-on-postnatal-morphological-development-of-hippocampal-neurons-in-rats
#13
Ewa Jakubowska-Dogru, Birsen Elibol, Ilknur Dursun, Sinan Yürüker
BACKGROUND: Alcohol is one of the most commonly used drugs of abuse negatively affecting human health and it is known as a potent teratogen responsible for fetal alcohol syndrome (FAS), which is characterized by cognitive deficits especially pronounced in juveniles but ameliorating in adults. Searching for the potential morphological correlates of these effects, in this study, we compared the course of developmental changes in the morphology of principal hippocampal neurons in fetal-alcohol (A group), intubated control (IC group), and intact control male rats (C group) over a protracted period of the first two postnatal months...
June 18, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28634551/mechanisms-and-consequences-of-dopamine-depletion-induced-attenuation-of-the-spinophilin-neurofilament-medium-interaction
#14
Andrew C Hiday, Michael C Edler, Asma B Salek, Cameron W Morris, Morrent Thang, Tyler J Rentz, Kristie L Rose, Lisa M Jones, Anthony J Baucum
Signaling changes that occur in the striatum following the loss of dopamine neurons in the Parkinson disease (PD) are poorly understood. While increases in the activity of kinases and decreases in the activity of phosphatases have been observed, the specific consequences of these changes are less well understood. Phosphatases, such as protein phosphatase 1 (PP1), are highly promiscuous and obtain substrate selectivity via targeting proteins. Spinophilin is the major PP1-targeting protein enriched in the postsynaptic density of striatal dendritic spines...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28633291/p2x7-receptors-drive-spine-synapse-plasticity-in-the-learned-helplessness-model-of-depression
#15
L Otrokocsi, Á Kittel, B Sperlágh
Background: Major depressive disorder is characterized by structural and functional abnormalities of cortical and limbic brain areas, including a decrease in spine synapse number in the dentate gyrus (DG) of the hippocampus. Recent studies highlighted that both genetic and pharmacological invalidation of the purinergic P2X7 receptor (P2rx7) leads to antidepressant-like phenotype in animal experiments, however, the impact of P2rx7 on depression-related structural changes in the hippocampus is not clarified yet...
June 13, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28631873/roles-of-afadin-in-functional-differentiations-of-hippocampal-mossy-fiber-synapse
#16
Xiaoqi Geng, Tomohiko Maruo, Kenji Mandai, Irwan Supriyanto, Muneaki Miyata, Shotaro Sakakibara, Akira Mizoguchi, Yoshimi Takai, Masahiro Mori
A hippocampal mossy fiber synapse has a complex structure and is implicated in learning and memory. In this synapse, the mossy fiber boutons attach to the dendritic shaft by puncta adherentia junctions and wrap around a multiply-branched spine, forming synaptic junctions. We have recently shown using transmission electron microscopy, immunoelectron microscopy and serial block face-scanning electron microscopy that atypical puncta adherentia junctions are formed in the afadin-deficient mossy fiber synapse and that the complexity of postsynaptic spines and mossy fiber boutons, the number of spine heads, the area of postsynaptic densities and the density of synaptic vesicles docked to active zones are decreased in the afadin-deficient synapse...
June 20, 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28628374/effects-of-a-multispecies-probiotic-supplement-on-bone-health-in-osteopenic-postmenopausal-women-a-randomized-double-blind-controlled-trial
#17
Sadegh Jafarnejad, Kurosh Djafarian, Mohammad Reza Fazeli, Mir Saeed Yekaninejad, Abdolrahman Rostamian, Seyed Ali Keshavarz
OBJECTIVE: The development of alternative approaches to prevent and/or treat osteoporosis, as a chronic progressive bone disease, is being considered currently. Among dietary supplements, probiotics may have favorable effects on bone metabolism. Therefore, the aim of this study was to evaluate the effects of a multispecies probiotic supplementation on bone biomarkers and bone density in osteopenic postmenopausal women. METHODS: This randomized double-blind placebo-controlled clinical trial was performed on 50 patients with osteopenia aged 50-72 years...
June 19, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28626757/actn3-gene-and-susceptibility-to-sarcopenia-and-osteoporotic-status-in-older-korean-adults
#18
Jinkyung Cho, Inhwan Lee, Hyunsik Kang
BACKGROUND: Little information is available about molecular markers for sarcopenia and osteoporosis in Asian populations. OBJECTIVE: This study investigated the association of the ACTN3 polymorphism with sarcopenia and osteoporotic status in older Korean adults. METHODS: Older Korean 62 men and 270 women (mean age 73.7 ± 6.6 years) participated in this study. Body mass index, percent body fatness, appendicular skeletal muscle mass, and bone mineral density of the lumbar spine, femur, and total body were analyzed with dual-energy X-ray absorptiometry...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28626166/efficacy-of-denosumab-for-osteoporosis-in-three-female-patients-with-osteogenesis-imperfecta
#19
Masashi Uehara, Yukio Nakamura, Jun Takahashi, Mikio Kamimura, Shota Ikegami, Takako Suzuki, Shigeharu Uchiyama, Tomomi Yamaguchi, Tomoki Kosho, Hiroyuki Kato
Osteogenesis imperfecta (OI) is an inherited bone disorder that causes fractures due to impaired production of collagen type I. In recent years, denosumab, a human monoclonal antibody against receptor activator of nuclear factor κB ligand (RANKL), has become widely used as an anti-osteoclastic agent for osteoporosis. This study investigated osteoporotic cases of OI to examine effects of denosumab on bone fragility. This was a retrospective, consecutive case series that included 3 female patients aged 42, 40, and 14 years, respectively...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28624935/eldecalcitol-an-active-vitamin-d3-derivative-prevents-trabecular-bone-loss-and-bone-fragility-in-type-i-diabetic-model-rats
#20
Satoshi Takeda, Mitsuru Saito, Sadaoki Sakai, Kenji Yogo, Keishi Marumo, Koichi Endo
Diabetes mellitus is known to adversely affect the bones and be associated with increased fracture risk. We examined whether eldecalcitol (ELD), an active vitamin D3 derivative, could inhibit the diabetic bone loss in streptozotocin-induced type I diabetic rats. ELD (10, 20, or 40 ng/kg), alfacalcidol (ALF; 25, 50, or 100 ng/kg), or vehicle was administered 5 times per week for 12 weeks from 1 week after diabetes induction. Normal control rats received the vehicle. Bone turnover markers, bone mineral density (BMD), and biomechanical strength of the lumbar spine and femur were measured, and bone histomorphometry was performed...
June 17, 2017: Calcified Tissue International
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