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https://www.readbyqxmd.com/read/27904493/beta-2-adrenergic-receptor-activation-enhances-neurogenesis-in-alzheimer-s-disease-mice
#1
Gao-Shang Chai, Yang-Yang Wang, Amina Yasheng, Peng Zhao
Impaired hippocampal neurogenesis is one of the early pathological features of Alzheimer's disease. Enhancing adult hippocampal neurogenesis has been pursued as a potential therapeutic strategy for Alzheimer's disease. Recent studies have demonstrated that environmental novelty activates β2-adrenergic signaling and prevents the memory impairment induced by amyloid-β oligomers. Here, we hypothesized that β2-adrenoceptor activation would enhance neurogenesis and ameliorate memory deficits in Alzheimer's disease...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27903338/-ultrasound-imaging-increases-first-attempt-success-rate-of-neuraxial-block-in-elderly-patients
#2
J Geng, X L Chen, X D Wang, X Y Guo, M Li
Objective: To verify whether preprocedural ultrasound of the lumbar spine could improve first-attempt success rate (defined as a successful neuraxial anesthesia with only one skin puncture) of neuraxial block in elderly patients. Methods: From septemble 2015 to February 2016, 200 elderly patients undergoing lower-limb surgery with neuraxial block at the Peking Universty Third Hospital were enrolled in this study.RandA 1.0 software was used to randomize patients into two groups: conventional surface landmark-guided group (group LM) and ultrasound-assisted group (group US)...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27894941/one-year-of-abaloparatide-a-selective-peptide-activator-of-the-pth1-receptor-increased-bone-mass-and-strength-in-ovariectomized-rats
#3
Aurore Varela, Luc Chouinard, Elisabeth Lesage, Robert Guldberg, Susan Y Smith, Paul J Kostenuik, Gary Hattersley
Abaloparatide is a novel 34 amino acid peptide selected to be a potent and selective activator of the parathyroid hormone receptor 1 (PTHR1) signaling pathway. The effects of 12months of abaloparatide treatment on bone mass, bone strength and bone quality was assessed in osteopenic ovariectomized (OVX) rats. SD rats were subjected to OVX or sham surgery at 6months of age and left untreated for 3months to allow OVX-induced bone loss. Eighteen OVX rats were sacrificed after this bone depletion period, and the remaining OVX rats received daily s...
November 25, 2016: Bone
https://www.readbyqxmd.com/read/27891035/intradiscal-and-intra-articular-facet-infiltrations-with-plasma-rich-in-growth-factors-reduce-pain-in-patients-with-chronic-low-back-pain
#4
Fernando Kirchner, Eduardo Anitua
CONTEXT: Low back pain (LBP) is a complex and disabling condition, and its treatment becomes a challenge. AIMS: The aim of our study was to assess the clinical outcome of plasma rich in growth factors (PRGF-Endoret) infiltrations (one intradiscal, one intra-articular facet, and one transforaminal epidural injection) under fluoroscopic guidance-control in patients with chronic LBP. PRGF-Endoret which has been shown to be an efficient treatment to reduce joint pain...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27886018/radiofrequency-activated-pmma-augmentation-through-cannulated-pedicle-screws-a-cadaver-study-to-determine-the-biomechanical-benefits-in-the-osteoporotic-spine
#5
T Karius, C Deborre, D C Wirtz, C Burger, A Prescher, A Fölsch, K Kabir, R Pflugmacher, H Goost
INTRODUCTION: PMMA-augmentation of pedicle screws strengthens the bone-screw-interface reducing cut-out risk. Injection of fluid cement bears a higher risk of extravasation, with difficulty of application because of inconsistent viscosity and limited injection time. OBJECTIVE: To test a new method of cement augmentation of pedicle screws using radiofrequency-activated PMMA, which is suspected to be easier to apply and have less extravasations. METHODS: Twenty-seven fresh-frozen human cadaver lumbar spines were divided into 18 osteoporotic (BMD ≤ 0...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27873505/hyperbaric-oxygen-pretreatment-improves-cognition-and-reduces-hippocampal-damage-via-p38-mitogen-activated-protein-kinase-in-a-rat-model
#6
Baisong Zhao, Yongying Pan, Zixin Wang, Haiping Xu, Xingrong Song
PURPOSE: To investigate the effects of hyperbaric oxygen (HBO) pretreatment on cognitive decline and neuronal damage in an Alzheimer's disease (AD) rat model. MATERIALS AND METHODS: Rats were divided into three groups: normal saline (NS), AD, and HBO+AD. In the AD group, amyloid β peptide (Aβ)₁₋₄₀ was injected into the hippocampal CA1 region of the brain. NS rats received NS injection. In the HBO+AD group, rats received 5 days of daily HBO therapy following Aβ₁₋₄₀ injection...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27870896/m30-antagonizes-indoleamine-2-3-dioxygenase-activation-and-neurodegeneration-induced-by-corticosterone-in-the-hippocampus
#7
Chun-Sing Lam, George Lim Tipoe, Johnny Kong-Ching Wong, Moussa B H Youdim, Man-Lung Fung
Monoamine oxidases (MAO), downstream targets of glucocorticoid, maintain the turnover and homeostasis of monoamine neurotransmitters; yet, its pathophysiological role in monoamine deficiency, oxidative stress and neuroinflammation remains controversial. Protective effects of M30, a brain selective MAO inhibitor with iron-chelating antioxidant properties, have been shown in models of neurodegenerative diseases. This study aims to examine the neuroprotective mechanism of M30 against depressive-like behavior induced by corticosterone (CORT)...
2016: PloS One
https://www.readbyqxmd.com/read/27870618/spinal-injections-for-pain-management
#8
William E Palmer
Image-guided spinal injection is commonly performed in symptomatic patients to decrease pain severity, confirm the pain generator, and delay or avoid surgery. This article focuses on the radiologist as spine interventionist and addresses the following four topics relevant to the radiologist who performs corticosteroid injections for pain management: (a) the rationale behind corticosteroid injection, (b) the interaction with patients, (c) the role of imaging in procedural selection and planning, and (d) the pearls and pitfalls of fluoroscopically guided injections...
December 2016: Radiology
https://www.readbyqxmd.com/read/27835935/a-new-vertebral-body-replacement-strategy-using-expandable-polymeric-cages
#9
Xifeng Liu, Alex Paulsen, Hugo Giambini, Ji Guo, Alan Miller, Po-Chun Lin, Michael J Yaszemski, Lichun Lu
We have developed a novel polymeric expandable cage that can be delivered via a posterior-only surgical approach for the treatment of non-contained vertebral defects. This approach is less invasive than an anterior-only or combined approach and much more cost effective than currently used expandable metal cages. The polymeric expandable cage is composed of oligo poly(ethylene glycol) fumarate (OPF), a hydrogel that has been previously shown to have excellent nerve and bone tissue biocompatibility. OPF hydrogel cages can expand to twice their original diameter and length within a surgical time frame following hydration...
November 11, 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27833319/-99m-tc-methylene-diphosphonate-single-photon-emission-computed-tomography-computed-tomography-improves-the-diagnostic-accuracy-of-osteoid-osteoma
#10
Samuel Brian Squier, Jacob Ian Lewis, Joseph Matthew Accurso, Manoj Kumar Jain
We present a case of a 17-year-old football player who had previously received multiple facet joint injections for presumed secondary osteoarthritis. (99)mTc-methylene diphosphonate single-photon emission computed tomography/computed tomography imaging of the cervical spine demonstrated focal increased radiopharmaceutical activity in the right C2 lamina, which was associated with an osteolytic lesion with a central irregular sclerotic nidus. Surgical pathology confirmed an osteoid osteoma.
October 2016: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/27800076/-the-contribution-of-mri-in-the-management-of-slowly-progressive-nontraumatic-spinal-cord-compression
#11
Nfally Badji, Hamidou Deme, Geraud Akpo, Boucar Ndong, Mouhamadou Hamine Toure, Sokhna Ba Diop, El Hadji Niang
Slow spinal cord compressions are due to the development of an expansive lesion within the medullary canal. This is a very common condition whose diagnosis is primarily clinical. The magnetic resonance imaging occupies a central and currently irreplaceable position in diagnosis and localization as well as in etiological research. Etiology of cancer is predominant in Europe. This study aims to describe the MRI features of slow spinal cord compressions and to determine its etiologic profile. This is a retrospective study of 97 cases whose data were collected at the Department of Radiology, National University Hospital Centre (CHUN) of Fann, over a period of 30 months (from March 8, 2010 to September 29 2012)...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27792054/evaluation-and-treatment-of-lumbar-facet-cysts
#12
Barrett S Boody, Jason W Savage
Lumbar facet cysts are a rare but increasingly common cause of symptomatic nerve root compression and can lead to radiculopathy, neurogenic claudication, and cauda equina syndrome. The cysts arise from the zygapophyseal joints of the lumbar spine and commonly demonstrate synovial herniation with mucinous degeneration of the facet joint capsule. Lumbar facet cysts are most common at the L4-L5 level and often are associated with spondylosis and degenerative spondylolisthesis. Advanced imaging studies have increased diagnosis of the cysts; however, optimal treatment of the cysts remains controversial...
December 2016: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27785742/combined-effects-of-phytoestrogen-genistein-and-silicon-on-ovariectomy-induced-bone-loss-in-rat
#13
Shanshan Qi, Hongxing Zheng
This study was performed to evaluate the effect of concomitant supplementation of genistein and silicon on bone mineral density and bone metabolism-related markers in ovariectomized rat. Three-month-old Sprague Dawley female rats were subjected to bilateral ovariectomy (OVX) or sham surgery, and then the OVX rats were randomly divided into four groups: OVX-GEN, OVX-Si, OVX-GEN-Si, and OVX. Genistein and silicon supplementation was started immediately after OVX and continued for 10 weeks. In the OVX-GEN group, 5 mg genistein per gram body weight was injected subcutaneously...
October 26, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27784858/reproductive-experience-modified-dendritic-spines-on-cortical-pyramidal-neurons-to-enhance-sensory-perception-and-spatial-learning-in-rats
#14
Jeng-Rung Chen, Seh Hong Lim, Sin-Cun Chung, Yee-Fun Lee, Yueh-Jan Wang, Guo-Fang Tseng, Tsyr-Jiuan Wan
Behavioral adaptations during motherhood are aimed at increasing reproductive success. Alterations of hormones during motherhood could trigger brain morphological changes to underlie behavioral alterations. Here we investigated whether motherhood changes a rat's sensory perception and spatial memory in conjunction with cortical neuronal structural changes. Female rats of different statuses, including virgin, pregnant, lactating, and primiparous rats were studied. Behavioral test showed that the lactating rats were most sensitive to heat, while rats with motherhood and reproduction experience outperformed virgin rats in a water maze task...
October 25, 2016: Experimental Animals
https://www.readbyqxmd.com/read/27777209/-effect-of-diallyl-disulfide-on-learning-and-memory-abilities-and-hippocampal-synapses-in-mouse-models-of-alzheimer-s-disease
#15
Ji-Xia Chai, Hui-Hui Li, Yuan-Yuan Wang, Qiang Chai, Wen-Xin He, Yan-Mei Zhou, Xiao-Dong Hu, Zhen-Huan Wang
OBJECTIVE: To explore the effect of diallyl disulfide (DADS) on hippocampal synapses and learning and memory abilities in a mouse model of A1zheimer's disease (AD). METHODS: Mouse models of AD established by agglutinated Aβ1-42 injection in the lateral cerebral ventricle were randomized into 4 groups and treated with DADS at the daily doses of 0, 10, 50 and 100 mg/kg by gavage for 30 consecutive days. The learning and memory abilities of the mice were assessed with Morris water maze test; the structures of the dendritic spines and synapses in CA1 region of the hippocampus were observed under transmission electron microscope with silver staining; PSD95 and SYP protein and mRNA expressions in the hippocampus were detected with Western blotting and RT-PCR...
October 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27777051/patient-reported-outcomes-after-lumbar-epidural-steroid-injection-for-degenerative-spine-disease-in-depressed-versus-non-depressed-patients
#16
Elliott J Kim, Silky Chotai, David P Stonko, Joseph B Wick, Byron J Schneider, Matthew J McGirt, Clint J Devin
BACKGROUND CONTEXT: Non-operative modalities such as lumbar epidural steroid injections (LESI) are often used in the setting of lumbar spine disorders where other conservative measures have failed. Concomitant depression can lead to worse outcomes in lumbar spine pathology. A number of studies have demonstrated an association between preoperative depression and poor outcomes following surgery but the effect of depression on outcomes following non-operative modalities is poorly understood...
October 21, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27770337/current-concepts-for-the-diagnosis-and-management-of-eosinophilic-granuloma-of-bone
#17
Andrea Angelini, Andreas F Mavrogenis, Eugenio Rimondi, Giuseppe Rossi, Pietro Ruggieri
This review summarizes current concepts in the diagnosis and management of the patients with eosinophilic granuloma. Given the benign biology, the clinical course, and the pediatric group of patients that this condition more commonly affects, a treatment approach that carries a lower risk of complications while ensuring a successful cure is desirable. Variable treatment options have been reported with satisfactory results and a recurrence rate of less than 20 %. In this setting, symptomatic lesions that are accessible in the spine or the extremities may be treated with intralesional methylprednisolone injection after tissue biopsy for histological diagnosis...
October 21, 2016: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/27765707/subsequent-healthcare-utilization-associated-with-early-physical-therapy-for-new-episodes-of-low-back-pain-in-older-adults
#18
Deven A Karvelas, Sean D Rundell, Janna L Friedly, Alfred C Gellhorn, Laura S Gold, Bryan A Comstock, Patrick J Heagerty, Brian W Bresnahan, David R Nerenz, Jeffrey G Jarvik
BACKGROUND: The association between early physical therapy (PT) and subsequent healthcare utilization following a new visit for low back pain is not clear, particularly in the setting of acute low back pain. PURPOSE: To estimate the association between initiating early physical therapy following a new visit for an episode of low back pain and subsequent back-pain-specific health care utilization in older adults. STUDY DESIGN/SETTING: Prospective cohort study...
October 17, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27756229/acute-transverse-myelitis-of-the-cervical-spine-secondary-to-psoas-abscess
#19
Hongyu He, Lirong Jin, Minjie Ju, Guowei Tu, Zhe Luo
BACKGROUND: Acute transverse myelitis is uncommon and presumably results from an autoimmune process or a preceding infection. Most cases of bacterial myelitis are due to hematogenous dissemination from urinary or respiratory tract infections or contiguous spreading from a neighboring infected structure. A psoas abscess rarely spreads to higher levels of the spinal cord. No cases of acute cervical myelitis due to a psoas abscess have been previously reported. CASE PRESENTATION: A 34-year-old man was transferred to our hospital due to progressive muscle weakness, sensory deficits and severe hypotension...
October 18, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27746535/the-effect-of-multimodal-analgesia-on-minimum-alveolar-concentration-of-isoflurane-for-skin-incision-at-constant-bispectral-index
#20
Keelara Shivalingaiah Savitha, Radhika Dhanpal, J Shilpa
BACKGROUND: Multimodal analgesia (MMA) by synergy with volatile anesthetics minimizes their use thus decreasing operation theater pollution and greenhouse gas emission. AIMS: To estimate minimum alveolar concentration (MAC) requirement of isoflurane (ISO) for skin incision with use of MMA in the study group versus conventional regime in the control group for a constant bispectral index (BIS). To observe the side effects of analgesic drugs administered in the study...
September 2016: Anesthesia, Essays and Researches
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