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https://www.readbyqxmd.com/read/28817419/the-association-of-fat-and-lean-tissue-with-whole-body-and-spine-bone-mineral-density-is-modified-by-hiv-status-and-sex-in-children-and-youth
#1
Denise L Jacobson, Jane C Lindsey, Brent A Coull, Kathleen Mulligan, Priya Bhagwat, Grace M Aldrovandi
BACKGROUND: HIV-infected (HIV-pos) male children/youth showed lower bone mineral density at sexual maturity than HIV-uninfected (HIV-neg) females. It is not known whether complications of HIV disease, including abnormal body fat distribution, contribute to lower bone accrual in male HIV-pos adolescents. METHODS: In a cross-sectional study, we evaluated the relationship between body composition (fat and lean mass) and bone mass in HIV-pos and HIV-neg children/youth and determined if it is modified by HIV status and sex...
August 16, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28816975/incidence-and-risk-factors-of-posterior-cage-migration-following-decompression-and-instrumented-fusion-for-degenerative-lumbar-disorders
#2
Hua Li, Hui Wang, Yanbo Zhu, Wenyuan Ding, Qian Wang
The aim of this study was to explore the incidence and risk factors for posterior cage migration (PCM) following decompression and instrumented fusion for degenerative lumbar disorders, and hope to provide references in decision making and surgical planning for spine surgeons.By retrieving the medical records from January 2011 to December 2015, 286 patients were retrospectively reviewed. According to the occurrence of PCM, patients were divided into 2 groups: PCM group and non-PCM (N-PCM). To investigate risk values for PCM, 3 categorized factors were analyzed statistically: patient characteristics: age, sex, body mass index, bone mineral density, duration of disease, diagnosis, comorbidity, smoke; surgical variables: surgery time, blood loss, surgical strategy, cage morphology, cage size, surgical segment, fusion number, source of bone graft, surgeon experience; radiographic parameters: preoperative lumbar lordosis, correction of lumbar lordosis, preoperative lumbar mobility, preoperative intervertebral height, change of intervertebral height, Modic changes, paraspinal muscle degeneration...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816930/associations-among-circulating-csf-1-estrogen-and-bone-mineral-density-in-postmenopausal-women-results-from-a-randomized-placebo-controlled-trial
#3
Andrea V Haas, Elaine Cong, Christine A Simpson, Nitin Sukumar, Yanhong Deng, Karl L Insogna
OBJECTIVE: This study addresses the relationship between circulating levels of colony-stimulating factor 1 (CSF-1) and rates of postmenopausal bone loss. The purpose was to test the hypothesis that CSF-1 levels would correlate with the rate of bone loss in estrogen-deficient woman. We further hypothesized that estrogen replacement would eliminate this association. METHODS: This was an ancillary study to the parent Kronos Early Estrogen Prevention Study (KEEPS)-a 4-year randomized placebo-controlled study that evaluated the effects of estrogen therapy on cardiovascular endpoints...
August 14, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28815738/the-effect-of-depression-generalized-anxiety-and-selective-serotonin-reuptake-inhibitors-on-change-in-bone-metabolism-in-adolescents-and-emerging-adults
#4
Chadi A Calarge, James A Mills, Kathleen F Janz, Trudy L Burns, Janet A Schlechte, William H Coryell, Babette S Zemel
OBJECTIVES: To prospectively examine the independent contribution of major depressive disorder (MDD), generalized anxiety disorder (GAD), and selective serotonin reuptake inhibitors (SSRIs) use to changes in bone metabolism in older adolescents and emerging adults. METHODS: Medically-healthy 15 to 20 year-olds who were unmedicated or within one month of starting an SSRI were prospectively followed. Psychiatric functioning and medication treatment were assessed monthly...
August 16, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28815553/osteoporosis-in-erythropoietic-protoporphyria-patients
#5
M Biewenga, R H S Matawlie, E C H Friesema, H Koole-Lesuis, M Langeveld, J H P Wilson, J G Langendonk
BACKGROUND: Erythropoietic protoporphyria is a rare metabolic disease with painful photosensitivity due to protoporphyrin IX accumulation, resulting in lifelong light avoidance behaviour. OBJECTIVES: The aim of this study was to evaluate bone mineral density and known osteoporosis risk factors in erythropoietic protoporphyria patients. METHODS: In this cross-sectional study all erythropoietic protoporphyria patients attending the Erasmus MC outpatient clinic that had undergone bone mineral density measurements were included...
August 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28815485/screening-for-osteoporosis-in-older-men-operating-characteristics-of-proposed-strategies-for-selecting-men-for-bmd-testing
#6
Susan J Diem, Katherine W Peters, Margaret L Gourlay, John T Schousboe, Brent C Taylor, Eric S Orwoll, Jane A Cauley, Lisa Langsetmo, Carolyn J Crandall, Kristine E Ensrud
BACKGROUND: The optimal approach for selecting men for bone mineral density (BMD) testing to screen for osteoporosis is uncertain. OBJECTIVE: To compare strategies for selecting older men for screening BMD testing. DESIGN: Prospective cohort study. PARTICIPANTS: A total of 4043 community-dwelling men aged ≥70 years at four US sites. MAIN MEASURES: BMD at the total hip, femoral neck, and lumbar spine using dual-energy x-ray absorptiometry (DXA)...
August 16, 2017: Journal of General Internal Medicine
https://www.readbyqxmd.com/read/28815389/spine-bone-mineral-density-increases-after-6%C3%A2-months-of-exclusive-lactation-even-in-women-who-keep-breastfeeding
#7
Sandra Cooke-Hubley, Beth J Kirby, James E Valcour, Gerald Mugford, Jonathan D Adachi, Christopher S Kovacs
This pilot study enrolled 31 women who had breastfed exclusively for 6 months. Lumbar and thoracic BMD increased 4 and 5%, respectively. Femoral neck and total body BMD did not change. Return of menses and progestin-only pill use were two potential signals that predicted a greater increase in BMD. PURPOSE/INTRODUCTION: The skeleton is resorbed during lactation to provide much of the calcium content of milk. After lactation ceases, these deficits in skeletal mineral content are largely restored, such that lactation has a neutral or protective effect against the long-term risk of low bone mineral density (BMD), osteoporosis, and fragility fractures...
August 16, 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28812320/the-relationship-between-periodontal-disease-tooth-loss-and-decreased-skeletal-bone-mineral-density-in-ageing-women
#8
Ivana Savić Pavičin, Jelena Dumančić, Tomislav Jukić, Tomislav Badel
AIM: Osteoporosis and periodontitis are both chronic diseases characterised by bone loss. Potential association is of great clinical importance because of multifactorial aetiology and common risk factors. The aim of this study was to determine relationship between bone mineral density (BMD), tooth loss and periodontal status taking into account age, number of years since onset of menopause and educational level. With increasing age, number of years since onset of menopause and lower educational level, decreased BMD, deteriorating periodontal status and greater tooth loss are expected...
August 15, 2017: Gerodontology
https://www.readbyqxmd.com/read/28809922/increased-signaling-by-the-autism-related-engrailed-2-protein-enhances-dendritic-branching-and-spine-density-alters-synaptic-structural-matching-and-exaggerates-protein-synthesis
#9
Asma Soltani, Solène Lebrun, Gilles Carpentier, Giulia Zunino, Sandrine Chantepie, Auriane Maïza, Yuri Bozzi, Claire Desnos, François Darchen, Olivier Stettler
Engrailed 1 (En1) and 2 (En2) code for closely related homeoproteins acting as transcription factors and as signaling molecules that contribute to midbrain and hindbrain patterning, to development and maintenance of monoaminergic pathways, and to retinotectal wiring. En2 has been suggested to be an autism susceptibility gene and individuals with autism display an overexpression of this homeogene but the mechanisms remain unclear. We addressed in the present study the effect of exogenously added En2 on the morphology of hippocampal cells that normally express only low levels of Engrailed proteins...
2017: PloS One
https://www.readbyqxmd.com/read/28808202/-borneol-is-neuroprotective-against-permanent-cerebral-ischemia-in-rats-by-suppressing-production-of-proinflammatory-cytokines
#10
Lei Chang, Chun-Yu Yin, Hai-Yin Wu, Bin-Bin Tian, Yan Zhu, Chun-Xia Luo, Dong-Ya Zhu
Stroke is one of the leading causes of disability and death globally. It occurs when a major artery is occluded in the brain and leads to death of cells within the injured tissue. (+)-Borneol, a simple bicyclic monoterpene extracted from traditional Chinese medicine, is widely used in various types of diseases. However, no study has proved the effects of (+)-borneol on functional recovery from permanent ischemic stroke and the mechanism is still unknown. Here, we report that in the rat model of permanent cerebral ischemia, we found that (+)-borneol (1...
July 13, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28808012/bdnf-trkb-controls-cocaine-induced-dendritic-spines-in-rodent-nucleus-accumbens-dissociated-from-increases-in-addictive-behaviors
#11
Ethan M Anderson, Anne Marie Wissman, Joyce Chemplanikal, Nicole Buzin, Daniel Guzman, Erin B Larson, Rachael L Neve, Eric J Nestler, Christopher W Cowan, David W Self
Chronic cocaine use is associated with prominent morphological changes in nucleus accumbens shell (NACsh) neurons, including increases in dendritic spine density along with enhanced motivation for cocaine, but a functional relationship between these morphological and behavioral phenomena has not been shown. Here we show that brain-derived neurotrophic factor (BDNF) signaling through tyrosine kinase B (TrkB) receptors in NACsh neurons is necessary for cocaine-induced dendritic spine formation by using either localized TrkB knockout or viral-mediated expression of a dominant negative, kinase-dead TrkB mutant...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28805705/changes-of-bone-related-minerals-during-denosumab-administration-in-post-menopausal-osteoporotic-patients
#12
Takako Suzuki, Yukio Nakamura, Hiroyuki Kato
OBJECTIVES: This retrospective study included 21 patients with primary osteoporosis who were treated with the anti-resorption drug, denosumab. To date, there has been no detailed report on the changes of bone-related minerals after anti-resorption drug therapy. METHODS: Twenty-one post-menopausal females were retrospectively enrolled. Serum zinc (Zn), magnesium (Mg), iron (Fe), copper (Cu), grip strength, and estimated glomerular filtration rate (eGFR) were examined at one week and 1, 2, 4, 6, 8, 10, and 12 months...
August 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28805099/short-term-daily-teriparatide-in-patients-with-rheumatoid-arthritis
#13
Tetsuya Kaneko, Koichi Okamura, Yukio Yonemoto, Chisa Okura, Takahito Suto, Masahiro Tachibana, Yasuyuki Tamura, Makoto Inoue, Hirotaka Chikuda
OBJECTIVE: The aim of this study was to compare the efficacy of six-month teriparatide treatment followed by six-month bisphosphonate therapy with 12-month bisphosphonate monotherapy in Japanese rheumatoid arthritis (RA) patients who had not been previously treated for osteoporosis. METHODS: A total of 34 RA patients with osteoporosis were enrolled. Thirteen patients received six-month teriparatide prior to six-month minodronate therapy (PTH group), and 21 patients received 12-month minodronate therapy (BP group)...
August 14, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28803923/stress-induced-neural-reorganization-a-conceptual-framework-linking-depression-and-alzheimer-s-disease
#14
REVIEW
Jennifer A Ross, Gediminas Gliebus, Elisabeth J Van Bockstaele
Chronic stress is a risk factor for a number of physiological disorders including cardiovascular disease, obesity and gastrointestinal disorders, as well as psychiatric and neurodegenerative disorders. There are a number of underlying molecular and cellular mechanisms altered in the course of chronic stress, which may increase the vulnerability of individuals to develop psychiatric disorders such as depression, and neurodegenerative disorders such as Alzheimer's Disease (AD). This is evident in the influence of stress on large-scale brain networks, including the resting state Default Mode Network (DMN), the effects of stress on neuronal circuitry and architecture, and the cellular and molecular adaptations to stress, which may render individuals with stress related psychiatric disorders more vulnerable to neurodegenerative disease later in life...
August 10, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28803898/electrospun-fibrous-membranes-featuring-sustained-release-of-ibuprofen-reduce-adhesion-and-improve-neurological-function-following-lumbar-laminectomy
#15
Shen Liu, Guoqing Pan, Guangwang Liu, José das Neves, Sa Song, Shuai Chen, Bangjun Cheng, Zhiyong Sun, Bruno Sarmento, Wenguo Cui, Cunyi Fan
Electrospun fibrous membranes provide suitable physical anti-adhesion barriers for reducing tissue anti-adhesion following surgery. However, often during the biodegradation process, these barriers trigger inflammation and cause a foreign body reaction with subsequent decrease in anti-adhesion efficacy. Here, a facile strategy comprising the incorporation of ibuprofen (IBU) into implantable membranes and its sustained release was proposed in order to improve anti-adhesion effects and neurological outcomes, namely to prevent failed back surgery syndrome (FBSS)...
August 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28802981/errors-in-patient-positioning-for-bone-mineral-density-assessment-by-dual-x-ray-absorptiometry-effect-of-technologist-retraining
#16
Sasivimol Promma, Chanika Sritara, Saowanee Wipuchwongsakorn, Krisanat Chuamsaamarkkee, Chirawat Utamakul, Wichana Chamroonrat, Arpakorn Kositwattanarerk, Yoch Anongpornjossakul, Kanungnij Thamnirat, Boonsong Ongphiphadhanakul
Improper positioning is one of the factors that can lead to incorrect bone mineral density (BMD) results. This study aimed to assess the frequencies of erroneous positioning during three periods: before retraining of the technologists (BR), after retraining (AR), and at the current timepoint 8 years after retraining (C). The BMD images of the first 150 consecutive patients who underwent DXA of the lumbar spine and hip during each of the three periods were retrospectively reviewed. Patients were excluded if they had severe scoliosis, rendering proper positioning impossible...
August 9, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28801997/prevalence-of-low-bone-mass-among-adolescents-with-nontransfusion-dependent-hemoglobin-e-%C3%AE-thalassemia-and-its-relationship-with-anemia-severity
#17
Pairunyar Nakavachara, Jaturat Petchkul, Krittha Jeerawongpanich, Pornpimol Kiattisakthavee, Teerarat Manpayak, Parichat Netsakulnee, Katharee Chaichanwattanakul, Julaporn Pooliam, Somdet Srichairatanakool, Vip Viprakasit
BACKGROUND: Low bone mass is common among adolescents with transfusion-dependent β-thalassemia despite adequate transfusion and iron chelation. However, there are few reports regarding bone mineral density (BMD) among adolescents with nontransfusion-dependent thalassemia (NTDT). Indeed, only BMD data in patients with nontransfusion-dependent (NTD) β-thalassemia intermedia have been reported. No previous study has investigated BMD among adolescents with NTD hemoglobin (Hb) E/β-thalassemia...
August 12, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28798977/risperidone-and-aripiprazole-alleviate-prenatal-valproic-acid-induced-abnormalities-in-behaviors-and-dendritic-spine-density-in-mice
#18
Yuta Hara, Yukio Ago, Atsuki Taruta, Shigeru Hasebe, Haruki Kawase, Wataru Tanabe, Shinji Tsukada, Takanobu Nakazawa, Hitoshi Hashimoto, Toshio Matsuda, Kazuhiro Takuma
RATIONALE: Rodents exposed prenatally to valproic acid (VPA) exhibit autism spectrum disorder (ASD)-like behavioral abnormalities. We recently found that prenatal VPA exposure causes hypofunction of the prefrontal dopaminergic system in mice. This suggests that the dopaminergic system may be a potential pharmacological target for treatment of behavioral abnormalities in ASD patients. OBJECTIVES: In the present study, we examined the effects of antipsychotic drugs, which affect the dopaminergic system, on the social interaction deficits, recognition memory impairment, and reduction in dendritic spine density in the VPA mouse model of ASD...
August 10, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28798036/why-don-t-serum-vitamin-d-concentrations-associate-with-bmd-by-dxa-a-case-of-being-bound-to-the-wrong-assay-implications-for-vitamin-d-screening
#19
Richard J Allison, Abdulaziz Farooq, Anissa Cherif, Bruce Hamilton, Graeme L Close, Mathew G Wilson
BACKGROUND: The association between bone mineral density (BMD) and serum25-hydroxyvitamin D (25(OH)D) concentration is weak, particularly in certain races (eg, BlackAfrican vs Caucasian) and in athletic populations. We aimed to examine if bioavailable vitamin D rather than serum 25(OH)D was related to markers of bone health within a racially diverse athletic population. METHODS: In 604 male athletes (Arab (n=327), Asian (n=48), Black(n=108), Caucasian (n=53)and Hispanic (n=68)), we measured total 25(OH)D, vitamin D-binding protein and BMD by DXA...
August 10, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28797019/associations-of-low-vitamin-d-and-elevated-parathyroid-hormone-concentrations-with-bone-mineral-density-in-perinatally-hiv-infected-children
#20
Denise L Jacobson, Charles B Stephensen, Tracie L Miller, Kunjal Patel, Janet S Chen, Russell B Van Dyke, Ayesha Mirza, Gertrud U Schuster, Rohan Hazra, Angela Ellis, Sean S Brummel, Mitchell E Geffner, Margarita Silio, Stephen A Spector, Linda A DiMeglio
BACKGROUND: Perinatally HIV-infected (PHIV) children have, on average, lower bone mineral density (BMD) than perinatally HIV-exposed uninfected (PHEU) and healthy children. Low 25-hydroxy vitamin D [25(OH)D] and elevated parathyroid hormone (PTH) concentrations may lead to suboptimal bone accrual. METHODS: PHIV and PHEU children in the Pediatric HIV/AIDS Cohort Study had total body (TB) and lumbar spine (LS) BMD and bone mineral content (BMC) measured by dual-energy x-ray absorptiometry; BMD z-scores (BMDz) were calculated for age and sex...
September 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
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