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https://www.readbyqxmd.com/read/28345842/bone-mineral-density-in-survivors-of-childhood-acute-lymphoblastic-leukemia
#1
Farzaneh Rohani, Khadijeh Arjmandi Rafsanjani, Gholamreza Bahoush, Mansoureh Sabzehparvar, Mohammad Ahmadi
Background: The objective of this study was to evaluate bone mineral density (BMD) after completion of treatment for childhood acute lymphoblastic leukemia (ALL). Methods: In this cross-sectional study, 103 survivors of ALL aged 13.5 ± 0.45 who completed their treatment at least one year earlier were enrolled. Among these, 49.5% and 51.5% received chemotherapy alone and chemotherapy plus cranial radiotherapy, respectively. Bone mineral content, BMD, and bone mineral apparent density in the lumbar spine (LS), femoral neck (FN) and forearm were assessed using dual-energy X-ray absorptiometry (DEXA)...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28343296/ibuprofen-protects-from-cypermethrin-induced-changes-in-the-striatal-dendritic-length-and-spine-density
#2
Pratibha Tripathi, Ashish Singh, Lakshmi Bala, Devendra Kumar Patel, Mahendra Pratap Singh
Microgliosis and inflammation are major wrongdoers in cypermethrin-induced Parkinsonism along with oxidative stress, mitochondrial dysfunction and α-synuclein aggregation. Dopamine depletion could alter dendritic morphology, length and spine number in the striatum. Present study investigated the effect of ibuprofen on the dendritic morphology, length and spine density in cypermethrin PD model. Male pups were treated intraperitoneally with cypermethrin during postnatal days followed by adulthood to induce Parkinsonism using standard procedure along with controls...
March 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28342168/bone-mass-in-boys-with-autism-spectrum-disorder
#3
Chadi A Calarge, Janet A Schlechte
To examine bone mass in children and adolescents with autism spectrum disorders (ASD). Risperidone-treated 5 to 17 year-old males underwent anthropometric and bone measurements, using dual-energy X-ray absorptiometry and peripheral quantitative computed tomography. Multivariable linear regression analysis models examined whether skeletal outcomes differed among participants with (n = 30) versus without ASD (n = 156). After adjusting for potential covariates, having ASD was associated with significantly lower trabecular bone mineral density and bone strength at the radius, and with marginally lower total body less head bone mineral content (p < 0...
March 25, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28341925/relationship-between-serum-adiponectin-and-bone-mineral-density-in-male-patients-with-obstructive-sleep-apnea-syndrome
#4
Dong-Dong Chen, Jie-Feng Huang, Qi-Chang Lin, Gong-Ping Chen, Jian-Ming Zhao
PURPOSE: Obstructive sleep apnea syndrome (OSAS) is reported to have an association with bone mineral density (BMD). However, the underlying mechanism is far from clear. The aim of this study was to investigate the relationship between OSAS, bone turnover markers, and BMD and to evaluate the effect of adiponectin on BMD in patients with OSAS. METHODS: Seventy-one male patients with OSAS and 13 male control subjects were enrolled in this study. Serum adiponectin, calcium, phosphorus, 25-hydroxyvitamin-D3, β-isomerized form C-terminal telopeptide of type I collagen, osteocalcin, and procollagen type 1 N-propeptide were measured in all subjects, and BMD was evaluated by dual-energy X-ray absorptiometry (DEXA) in the lumbar spine (L1-L4), the femoral neck, and the hip total...
March 25, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28341899/cortical-microstructure-compensates-for-smaller-bone-size-in-young-caribbean-hispanic-versus-non-hispanic-white-men
#5
M D Walker, A Kepley, K Nishiyama, B Zhou, E Guo, T L Nickolas
Hispanic men have smaller bone size but thicker and denser cortices compared to white men, leading to similar mechanical competence. INTRODUCTION: The purpose of this study was to assess differences in vBMD and microarchitecture in young Caribbean Hispanic (n = 30) and non-Hispanic Caucasian (n = 30) men. METHODS: We measured areal bone mineral density (aBMD) at the spine, total hip (TH), femoral neck (FN), and forearm by dual-energy X-ray absorptiometry (DXA) and bone geometry, mass, microarchitecture, and mechanical competence by high-resolution peripheral quantitative computed tomography (HRpQCT), individual trabecula segmentation (ITS), and finite element analysis (FEA)...
March 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28341762/a-prospective-observational-study-on-effect-of-short-term-periodic-steroid-premedication-on-bone-metabolism-in-gastrointestinal-cancer-espresso-01
#6
Michio Nakamura, Atsushi Ishiguro, Tetsuhito Muranaka, Hiraku Fukushima, Satoshi Yuki, Kota Ono, Taichi Murai, Chika Matsuda, Ayane Oba, Kazufumi Itaya, Takayuki Sone, Masataka Yagisawa, Yuta Koike, Ayana Endo, Yoko Tsukuda, Yuji Ono, Takahiko Kudo, Atsushi Nagasaka, Shuji Nishikawa, Yoshito Komatsu
BACKGROUND: A multicenter prospective observational study evaluated the effect of gastrointestinal cancer chemotherapy with short-term periodic steroid premedication on bone metabolism. PATIENTS AND METHODS: Seventy-four patients undergoing chemotherapy for gastrointestinal cancer were studied. The primary endpoints were changes in bone mineral densities (BMDs) and metabolic bone turnover 16 weeks after initiation of chemotherapy. BMDs, measured by dual-energy x-ray absorptiometry, and serum cross-linked N-telopeptides of type I collagen (sNTX), and bone alkaline phosphatase (sBAP) were assessed for evaluation of bone resorption and formation, respectively...
March 24, 2017: Oncologist
https://www.readbyqxmd.com/read/28338888/vibration-transmission-of-the-spine-during-walking-is-different-between-the-lumbar-and-thoracic-regions-in-older-adults
#7
Dafne Zuleima Morgado Ramirez, Siobhan Strike, Raymond Lee
Background: fractures occur more commonly in the thoracic than in the lumbar spine. Physical activity complemented with pharmacological interventions has been advocated as a preventive measure for osteoporosis. However, walking has been shown to produce only a small improvement in spinal bone mineral density. The characteristics of vibration transmission during walking at the lumbar and thoracic spines may be different, and this may help explain the relative incidence of fractures in the two spine regions...
March 18, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28337771/5-ht7-receptor-shapes-spinogenesis-in-cortical-and-striatal-neurons-an-editorial-highlight-for-serotonin-5-ht7-receptor-increases-the-density-of-dendritic-spines-and-facilitates-synaptogenesis-in-forebrain-neurons
#8
EDITORIAL
Philippe Marin, Alexander Dityatev
Read the highlighted article 'Serotonin 5-HT7 receptor increases the density of dendritic spines and facilitates synaptogenesis in forebrain neurons' on doi: 10.1111/jnc.13962.
March 24, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28337524/quantitative-analysis-of-efficacy-and-associated-factors-of-calcium-intake-on-bone-mineral-density-in-postmenopausal-women
#9
J Wu, L Xu, Y Lv, L Dong, Q Zheng, L Li
A model-based meta-analysis method was performed to quantitatively analyze the efficacy characteristics of calcium intake in BMD increase among postmenopausal women. We found that age and calcium intake dose were key factors affecting the efficiency and onset of BMD change, and daily 1200 mg calcium was suggested to be a beneficial dosage. INTRODUCTION: This paper aims to quantify the efficacy of calcium intake in preventing bone mineral density (BMD) decrease among postmenopausal women and to investigate the factors that may affect the efficacy...
March 23, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28336441/chronic-stress-induced-dendritic-reorganization-and-abundance-of-synaptosomal-pka-dependent-cp-ampa-receptor-in-the-basolateral-amygdala-in-a-mouse-model-of-depression
#10
Eun-Surk Yi, Seikwan Oh, Jang-Kyu Lee, Yea-Hyun Leem
Chronic stress is a precipitating factor for disorders including depression. The basolateral amygdala (BLA) is a critical substrate that interconnects with stress-modulated neural networks to generate emotion- and mood-related behaviors. The current study shows that 3 h per day of restraint stress for 14 days caused mice to exhibit long-term depressive behaviors, manifested by disrupted sociality and despair levels, which were rescued by fluoxetine. These behavioral changes corresponded with morphological and molecular changes in BLA neurons, including chronic stress-elicited increases in arborization, dendritic length, and spine density of BLA principal neurons...
March 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28333212/structural-history-of-human-srgap2-proteins
#11
Michael Sporny, Julia Guez-Haddad, Annett Kreusch, Sivan Shakartzi, Avi Neznansky, Alice Cross, Michail N Isupov, Britta Qualmann, Michael M Kessels, Yarden Opatowsky
In the development of the human brain, human-specific genes are considered to play key roles, conferring its unique advantages and vulnerabilities. At the time of Homo lineage divergence from Australopithecus, SRGAP2C gradually emerged through a process of serial duplications and mutagenesis from ancestral SRGAP2A (3.4-2.4 Ma). Remarkably, ectopic expression of SRGAP2C endows cultured mouse brain cells, with human-like characteristics, specifically, increased dendritic spine length and density. To understand the molecular mechanisms underlying this change in neuronal morphology, we determined the structure of SRGAP2A and studied the interplay between SRGAP2A and SRGAP2C...
February 21, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28330908/the-effect-of-dairy-intake-on-bone-mass-and-body-composition-in-early-pubertal-girls-and-boys-a-randomized-controlled-trial
#12
Kara A Vogel, Berdine R Martin, Linda D McCabe, Munro Peacock, Stuart J Warden, George P McCabe, Connie M Weaver
Background: Calcium retention increases with increasing body mass index (BMI) on recommended calcium intakes. Dairy foods are an excellent source of essential nutrients that are needed to increase bone mineral content (BMC) and potentially decrease fracture.Objective: We compared children who were overweight with children who were healthy weight for the accrual of bone mass in response to an extra 3 servings dairy/d compared with usual intake.Design: Participants were 240 healthy boys and girls (64%), aged 8-15...
March 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28328853/updated-association-of-tea-consumption-and-bone-mineral-density-a-meta-analysis
#13
Zhao-Fei Zhang, Jun-Long Yang, Huan-Chang Jiang, Zheng Lai, Feng Wu, Zhi-Xiang Liu
BACKGROUND: Current studies evaluating the association of tea consumption and bone mineral density (BMD) have yielded inconsistent findings. Therefore, we conducted a meta-analysis to assess the relationship between tea consumption and BMD. METHODS: The PubMed, Embase, and Cochrane Library databases were comprehensively searched, and a meta-analysis performed of all observational studies assessing the association of tea consumption and BMD. Forest plots were used to illustrate the results graphically...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327181/soluble-oligomeric-amyloid-%C3%AE-induces-calcium-dyshomeostasis-that-precedes-synapse-loss-in-the-living-mouse-brain
#14
Michal Arbel-Ornath, Eloise Hudry, Josiah R Boivin, Tadafumi Hashimoto, Shuko Takeda, Kishore V Kuchibhotla, Steven Hou, Carli R Lattarulo, Arianna M Belcher, Naomi Shakerdge, Pariss B Trujillo, Alona Muzikansky, Rebecca A Betensky, Bradley T Hyman, Brian J Bacskai
BACKGROUND: Amyloid-β oligomers (oAβ) are thought to mediate neurotoxicity in Alzheimer's disease (AD), and previous studies in AD transgenic mice suggest that calcium dysregulation may contribute to these pathological effects. Even though AD mouse models remain a valuable resource to investigate amyloid neurotoxicity, the concomitant presence of soluble Aβ species, fibrillar Aβ, and fragments of amyloid precursor protein (APP) complicate the interpretation of the phenotypes. METHOD: To explore the specific contribution of soluble oligomeric Aβ (oAβ) to calcium dyshomeostasis and synaptic morphological changes, we acutely exposed the healthy mouse brain, at 3 to 6 months of age, to naturally occurring soluble oligomers and investigated their effect on calcium levels using in vivo multiphoton imaging...
March 21, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28327171/the-association-of-time-and-medications-with-changes-in-bone-mineral-density-in-the-2%C3%A2-years-after-critical-illness
#15
Neil R Orford, Michael Bailey, Rinaldo Bellomo, Julie A Pasco, Claire Cattigan, Tania Elderkin, Sharon L Brennan-Olsen, David J Cooper, Mark A Kotowicz
BACKGROUND: Critical illness is associated with increased risk of fragility fracture and loss of bone mineral density (BMD), although the impact of medication exposures (bone anti-fracture therapy or glucocorticoids) and time remain unexplored. The objective of this study was to describe the association of time after ICU admission, and post-ICU administration of bone anti-fracture therapy or glucocorticoids after critical illness, with change in BMD. METHODS: In this prospective observational study, conducted in a tertiary hospital ICU, we studied adult patients requiring mechanical ventilation for at least 24 hours and measured BMD annually for 2 years after ICU discharge...
March 21, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28326929/dendritic-spine-dysgenesis-in-superficial-dorsal-horn-sensory-neurons-after-spinal-cord-injury
#16
Xiaoyu C Cao, Laura W Pappalardo, Stephen G Waxman, Andrew M Tan
Neuropathic pain is a major complication of spinal cord injury, and despite aggressive efforts, this type of pain is refractory to available clinical treatment. Our previous work has demonstrated a structure-function link between dendritic spine dysgenesis on nociceptive sensory neurons in the intermediate zone, laminae IV/V, and chronic pain in central nervous system and peripheral nervous system injury models of neuropathic pain. To extend these findings, we performed a follow-up structural analysis to assess whether dendritic spine remodeling occurs on superficial dorsal horn neurons located in lamina II after spinal cord injury...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326352/aging-lifestyle-factors-hormones-and-bone-health-in-singaporean-men
#17
Victor Hng Hang Goh, William George Hart
PURPOSE: The present study examined how age, bodyweight, body fat, regular exercise and some endocrine factors are associated with osteoporosis, spine bone mineral density (Sbmd) and femoral neck bone mineral density (Fnbmd) in Singaporean men. METHODS: Body composition and bone scans of lumbar spine at L2-L4 and hip were carried out with duel-energy X-ray absorptiometry (DXA). Anthropometric parameters were measured and demographic data, medical history and exercise schedule were collected via a questionnaire...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326351/effects-of-low-dose-ibuprofen-supplementation-and-resistance-training-on-bone-and-muscle-in-postmenopausal-women-a-randomized-controlled-trial
#18
Whitney R D Duff, Saija A Kontulainen, Darren G Candow, Julianne J Gordon, Riley S Mason, Regina Taylor-Gjevre, Bindu Nair, Michael Szafron, Adam D G Baxter-Jones, Gordon A Zello, Philip D Chilibeck
PURPOSE: To compare the effects of nine months of exercise training and ibuprofen supplementation (given immeditately after exercise sessions) on bone and muscle in postmenopausal women. METHODS: In a double-blind randomized trial, participants (females: n = 90, mean age 64.8, SD 4.3 years) were assigned (computer generated, double blind) to receive supervised resistance training or stretching 3 days/week, and ibuprofen (400 mg, post-exercise) or placebo (i...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326299/the-association-between-dehydroepiandrosterone-sulfate-dhea-s-and-bone-mineral-density-in-korean-men-and-women
#19
Seung-Gun Park, Sena Hwang, Jong-Suk Kim, Kyung-Chae Park, Yuri Kwon, Kyong-Chol Kim
BACKGROUND: The relationship between dehydroepiandrosterone sulfate (DHEA-S) and bone mineral density (BMD) is controversial. And findings of most studies that have investigated this relationship are restricted to postmenopausal women. In this study, we investigated the relationship between serum DHEA-S and BMD in both men and women. METHODS: This cross-sectional study evaluated a total of 294 healthy Korean participants through a medical examination program. And a subgroup of 154 participants was subjected to a longitudinal analysis...
February 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28326019/nahs-protects-against-the-impairments-induced-by-oxygen-glucose-deprivation-in-different-ages-of-primary-hippocampal-neurons
#20
Qian Yu, Binrong Wang, Tianzhi Zhao, Xiangnan Zhang, Lei Tao, Jinshan Shi, Xude Sun, Qian Ding
Brain ischemia leads to poor oxygen supply, and is one of the leading causes of brain damage and/or death. Neuroprotective agents are thus in great need for treatment purpose. Using both young and aged primary cultured hippocampal neurons as in vitro models, we investigated the effect of sodium hydrosulfide (NaHS), an exogenous donor of hydrogen sulfide, on oxygen-glucose deprivation (OGD) damaged neurons that mimick focal cerebral ischemia/reperfusion (I/R) induced brain injury. NaHS treatment (250 μM) protected both young and aged hippocampal neurons, as indicated by restoring number of primary dendrites by 43...
2017: Frontiers in Cellular Neuroscience
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