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https://www.readbyqxmd.com/read/27925440/enhancing-bioactive-properties-of-silk-fibroin-with-diatom-particles-for-bone-tissue-engineering-applications
#1
Thi Duy Hanh Le, Volha Liaudanskaya, Walter Bonani, Claudio Migliaresi, Antonella Motta
Many studies have highlighted the role of silicon in human bone formation and maintenance. Silicon, in fact, is considered to nucleate the precipitation of hydroxyapatite and to reduce the bone resorption. For this reason, we have combined silk fibroin with silicon releasing diatom particles, as potential material for bone tissue engineering applications. Sponges of fibroin loaded with different amounts and sizes of diatom particles were prepared by solvent casting-particulate leaching method, and their morphology, porosity and mechanical properties were evaluated...
December 7, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27923761/intraoperative-neurophysiological-monitoring-for-adult-patients-undergoing-posterior-spinal-fusion
#2
Nitin Agarwal, D Kojo Hamilton, Alp Ozpinar, Phillip Choi, Robert Hart, Ilker Yaylali
INTRODUCTION: Somatosensory evoked potentials (SSEP) and motor evoked potentials (MEP) are frequently used to monitor neurological function during spinal deformity surgery. The sensitivity and specificity of intraoperative neurophysiological monitoring (IONM) in patients undergoing posterior spinal fusion (PSF) in debatable. METHODS: A retrospective review of all patients undergoing PSF with IONM from October 2008 to December 2012 was performed. Factors including gender, operative time and spinal levels of posterior fusion were analyzed as risk factors for intraoperative alerts...
December 3, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27922964/the-effect-of-uniaxial-mechanical-stretch-on-wnt-%C3%AE-catenin-pathway-in-bone-mesenchymal-stem-cells
#3
Chuang Zhao, Yunfeng Li, Xuemei Wang, Shujuan Zou, Jing Hu, En Luo
Wnt/β-catenin signal is required in bone formation and remodling, but little is known about whether Wnt/β-catenin signal could promote osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMSCs) after uniaxial mechanical stretch. In this study, rat BMSCs were identified by flow cytometry and used for mechanical stretch. A custom-made uniaxial dynamic stretch apparatus was applied for rat BMSCs stretch. There were 2 groups in the study: the mechanical stretch group and the nonstretch control group...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922893/craniofacial-fibrous-dysplasia-retrospective-study-on-the-relationship-between-the-tumor-volume-changes-and-the-circulating-serum-calcitonin-and-serum-alkaline-phosphatase
#4
Mohammed Ahmed Hussein, In Sik Yun, Bo Ok Kim, Yong Oock Kim
BACKGROUND: The purpose of this study was to determine the usefulness of serum alkaline phosphatase (ALP) and calcitonin in the follow-up of tumor volume changes in patients with craniofacial fibrous dysplasia. METHODS: Twenty patients with isolated craniofacial fibrous dysplasia were included, who met our criteria for long-term follow-up. Three-dimensional computed tomography scans were obtained, and tumor segmentation was performed. The tumor volume was measured preoperatively, immediate postoperative and during long-term follow-up...
December 5, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27922245/a-novel-mutation-in-a-case-of-pseudohypoparathyroidism-type-ia
#5
Birgül Kırel, Meliha Demiral, Özkan Bozdağ, Kadri Karaer
Pseudohypoparathyroidism (PHP) type Ia is characterized by multiple hormone resistance; primarily parathyroid hormone (PTH) resistance and Albright's hereditary osteodystrophy (AHO) which involves skeletal and developmental defects. The AHO phenotype alone without hormone resistance is defined as pseudoPHP. A boy was first diagnosed as having both rickets and primary hypothyroidism at 2.5 months of age. His calcium level remained within normal levels after vitamin D treatment, but, elevated PTH and ALP levels and normal-high phosphate levels persisted during his follow-up by age of 2...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27921022/the-protective-effect-of-hydro-alcoholic-extract-of-mangrove-avicennia-marina-l-leaves-on-kidney-injury-induced-by-carbon-tetrachloride-in-male-rats
#6
Naser Mirazi, Seyedeh-Nahid Movassagh, Mahmoud Rafieian-Kopaei
BACKGROUND: Materials can cause liver and kidney damage which carbon tetrachloride is one of these substances. Medicinal plants and their essential oils and extracts have been used to a large extent as drugs to better control and management of kidney diseases. OBJECTIVES: The aim of this study was to investigate the effect of hydro-alcoholic extract of Avicennia marina leaves in the treatment of renal toxicity induced by carbon tetrachloride. METHODS: Forty-two male rats were randomly divided into 6 groups (n = 7): control (taking normal saline, 0...
October 2016: Journal of Nephropathology
https://www.readbyqxmd.com/read/27920819/co-administration-of-metformin-and-n-acetylcysteine-with-dietary-control-improves-the-biochemical-and-histological-manifestations-in-rats-with-non-alcoholic-fatty-liver
#7
Naglaa Mohamed El-Lakkany, Sayed Hassan Seif El-Din, Abdel-Nasser Abdel-Aal Sabra, Olfat Ali Hammam, Fatma Abdel-Latif Ebeid
Non-alcoholic fatty liver disease (NAFLD) is a burgeoning health problem that affects 1/3 of the adult population and an increasing number of children in developed countries. Oxidative stress and insulin resistance are the mechanisms that seem to be mostly involved in its pathogenesis. This study was conceived in a NAFLD rat model to evaluate the efficacy of both metformin (MTF) and N-acetylcysteine (NAC) with dietary control on biochemical and histologic liver manifestations. Rats were classified into nine groups; normal (I), NAFLD-induced by feeding high-fat diet (HFD; II) for 12 weeks, NAFLD switched to regular diet (RD; III), NAFLD-HFD or -RD treated with MTF in a dose of 150 mg/kg (IV, V), NAC in a dose of 500 mg/kg (VI, VII) or MTF+NAC (VIII, IX) respectively for 8 weeks...
October 2016: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27919752/bioavailable-25-oh-d-but-not-total-25-oh-d-is-an-independent-determinant-for-bone-mineral-density-in-chinese-postmenopausal-women
#8
Chenguang Li, Peizhan Chen, Xiaohua Duan, Jing Wang, Bing Shu, Xiaoguang Li, Qian Ba, Jingquan Li, Yongjun Wang, Hui Wang
Total 25(OH)D levels were determined to assess bone health in elderly populations; however, the bioavailability of 25(OH)D is regulated by the albumin and vitamin D binding protein (DBP) levels and DBP variations. Whether bioavailable 25(OH)D level is a superior biomarker for vitamin D than total 25(OH)D level regarding the BMD and the bone metabolism were not yet fully understood. With a community based cross-sectional study of 967 postmenopausal women, we found that the variant rs7041, but not rs4588, of DBP was significantly associated with the blood DBP level, which was positively correlated with the total 25(OH)D level but negatively associated with bioavailable 25(OH)D levels...
November 28, 2016: EBioMedicine
https://www.readbyqxmd.com/read/27919683/effects-of-c-terminal-amelogenin-peptides-on-the-metabolism-of-osteoblasts
#9
Tetsuya Awada, Ryo Kunimatsu, Yuki Yoshimi, Naoto Hirose, Tomomi Mitsuyoshi, Keisuke Sumi, Kotaro Tanimoto
OBJECTIVES: Amelogenins, enamel matrix proteins secreted by ameloblasts, comprise 90% of the developing extracellular enamel matrix. Recent evidence suggests that amelogenins might induce the proliferation of various cells. However, the residues comprising the active site of amelogenin remain unclear. Therefore, this study aimed to examine the effects of a human amelogenin C-terminal peptide (amgCP) on the metabolism of osteoblasts. MATERIALS AND METHODS: Mouse calvarial osteoblastic cells (MC3T3-E1) were cultured and treated with amgCP...
December 2, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27919182/treatment-resistant-schizophrenia-treatment-response-and-resistance-in-psychosis-trrip-working-group-consensus-guidelines-on-diagnosis-and-terminology
#10
Oliver D Howes, Rob McCutcheon, Ofer Agid, Andrea de Bartolomeis, Nico J M van Beveren, Michael L Birnbaum, Michael A P Bloomfield, Rodrigo A Bressan, Robert W Buchanan, William T Carpenter, David J Castle, Leslie Citrome, Zafiris J Daskalakis, Michael Davidson, Richard J Drake, Serdar Dursun, Bjørn H Ebdrup, Helio Elkis, Peter Falkai, W Wolfgang Fleischacker, Ary Gadelha, Fiona Gaughran, Birte Y Glenthøj, Ariel Graff-Guerrero, Jaime E C Hallak, William G Honer, James Kennedy, Bruce J Kinon, Stephen M Lawrie, Jimmy Lee, F Markus Leweke, James H MacCabe, Carolyn B McNabb, Herbert Meltzer, Hans-Jürgen Möller, Shinchiro Nakajima, Christos Pantelis, Tiago Reis Marques, Gary Remington, Susan L Rossell, Bruce R Russell, Cynthia O Siu, Takefumi Suzuki, Iris E Sommer, David Taylor, Neil Thomas, Alp Üçok, Daniel Umbricht, James T R Walters, John Kane, Christoph U Correll
OBJECTIVE: Research and clinical translation in schizophrenia is limited by inconsistent definitions of treatment resistance and response. To address this issue, the authors evaluated current approaches and then developed consensus criteria and guidelines. METHOD: A systematic review of randomized antipsychotic clinical trials in treatment-resistant schizophrenia was performed, and definitions of treatment resistance were extracted. Subsequently, consensus operationalized criteria were developed through 1) a multiphase, mixed methods approach, 2) identification of key criteria via an online survey, and 3) meetings to achieve consensus...
December 6, 2016: American Journal of Psychiatry
https://www.readbyqxmd.com/read/27918898/roles-of-l-type-calcium-channels-cav1-2-and-the-distal-c-terminus-dct-in-differentiation-and-mineralization-of-rat-dental-apical-papilla-stem-cells-rscaps
#11
Qianqian Gao, Jianping Ge, Yanqin Ju, Changsheng Li, Jian Gao, Meisheng Wu, Shouliang Zhao
OBJECTIVE: Voltage-gated inward Ca(2+) currents (ICa) are triggered by cell depolarization and commonly produce transient increases in the cytoplasmic free Ca(2+) concentration. The CaV1.2 distal C-terminus is susceptible to proteolytic cleavage, which yields a truncated CaV1.2 subunit and a cleaved C-terminal fragment (CCt or DCT). Stem cells from the apical papilla (SCAPs) has a capacity for differentiation into the odontoblastic-like cells in vitro and dentin forming in vivo, which makes SCAPs advantages in tissue engineering and regenerative endodontic...
November 4, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27918239/-137-caesium-in-samples-of-wild-grown-boletus-edulis-bull-from-lucca-province-tuscany-italy-and-other-italian-and-european-geographical-areas
#12
Laura Betti, Lionella Palego, Antonio Lucacchini, Gino Giannaccini
Samples of the edible mushroom Boletus edulis Bull. were studied to assess the risk for human health related to their content of the artificial radionuclide (137)Cs. Fresh B. edulis carpophores were collected in four undeveloped microhabitats of Lucca province (Tuscany, North-Central Italy). Dried non-cultivated samples coming from this same district and 11 other Italian provinces or European countries were instead purchased fromcommercial sources. Contents of (137)Cs, reported as Bq kg(‒1) dry weight (dw), were measured by γ-spectrometry...
December 5, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27918081/st1926-attenuates-steroid-induced-osteoporosis-in-rats-by-inhibiting-inflammation-response
#13
Hong-Xing Zhao, Yuan-Xia Huang, Jin-Gang Tao
Steroid, also known as glucocorticoid, induced osteonecrosis of the femoral head in young adults, which has been a challenging disorder for the frequent incidence of collapse of femoral head, leading to dysfunction of hip joint and impairing life quality of human. Bioavailable and less toxic synthetic retinoids, such as the atypical adamantyl retinoid ST1926, have been developed and investigated in clinical trials for many diseases. Serum lipid-related indicators were assessed to elucidate the role of ST1926 in regulating lipid metabolism...
December 5, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27917976/institutional-development-and-policy-frameworks-for-pastoralism-from-local-to-regional-perspectives
#14
B Bonfoh, G Fokou, L Crump, J Zinsstag, E Schelling
Pastoralists are among the most politically and economically marginalised communities in the world. They have less and less access to the natural resources on which their livelihoods depend and very limited access to basic socio-economic services and infrastructure. This paper builds on a number of studies carried out in the Sahel, the Horn of Africa, Central Asia and the Swiss Alps to address the institutional dynamics required for sustainable pastoralism. Specifically, the authors question the way in which institutions and policies are currently shaped and suggest that reforming these could contribute to new avenues for pastoralism...
November 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/27917341/the-effect-of-n-acetyl-cysteine-nac-on-aluminum-phosphide-poisoning-inducing-cardiovascular-toxicity-a-case-control-study
#15
Fakhreddin Taghaddosinejad, Esmaeil Farzaneh, Mahdi Ghazanfari-Nasrabad, Nastaran Eizadi-Mood, Morteza Hajihosseini, Omid Mehrpour
BACKGROUND: Aluminum phosphide (AlP) is a very effective indoor and outdoor pesticide. We investigated the effects of N-acetyl cysteine (NAC) on the survival time, hemodynamics, and cardiac biochemical parameters at various time intervals in some cases of AlP poisoning. METHODS: This research was a case-control study to evaluate 63 AlP poisoned patients during 2010-2012. Patients with cardiovascular complications of AlP to be treated with intravenous NAC plus conventional treatment were considered as the case group and compared with patients who did not receive NAC...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27917278/the-preventive-and-therapeutic-roles-of-phytoestrogen-%C3%AE-zearalanol-on-osteoporetic-rats-due-to-ovariectomization
#16
Shaochun Li, Weiwei Zhang, Fei Duan, Weihua Liu, Xiaofang Sun, Xuefeng Pan
OBJECTIVES: The aim of this study was to observe the influence of phytoestrogen α-Zearalanol on ovariectomy-induced postmenopausal osteoporosis in rats. MATERIALS AND METHODS: 40 SD female rats were randomly divided into four groups: Sham group, OVX group (ovariectomized and fed estrogen), α-Zearalanol group (ovariectomized and fed α-Zearalanol) and untreated group (ovariectomized). Three weeks later after surgery, α-Zearalanol and estradiol valerate were administered by oral gavage for 12 weeks to the α-Zearalanol group and the OVX group, respectively...
November 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27916908/epidermal-growth-factor-receptor-status-in-circulating-tumor-cells-as-a-predictive-biomarker-of-sensitivity-in-castration-resistant-prostate-cancer-patients-treated-with-docetaxel-chemotherapy
#17
Takatsugu Okegawa, Naoshi Itaya, Hidehiko Hara, Mitsuhiro Tambo, Kikuo Nutahara
OBJECTIVE: We examined whether epidermal growth factor receptor (EGFR) expression in circulating tumor cells (CTCs) can be used to predict survival in a population of bone-metastatic castration-resistant prostate cancer (mCRPC) patients treated with docetaxel chemotherapy. METHODS: All patients with mCRPC who had experienced treatment failure with androgen-deprivation therapy and had received docetaxel chemotherapy were eligible. CTCs and EGFR expression in CTCs were enumerated with the CellSearch System in whole blood...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916889/hyaluronic-acid-gel-based-scaffolds-as-potential-carrier-for-growth-factors-an-in-vitro-bioassay-on-its-osteogenic-potential
#18
Masako Fujioka-Kobayashi, Benoit Schaller, Eizaburo Kobayashi, Maria Hernandez, Yufeng Zhang, Richard J Miron
Hyaluronic acid (HA) has been utilized for a variety of regenerative medical procedures due to its widespread presence in connective tissue and perceived biocompatibility. The aim of the present study was to investigate HA in combination with recombinant human bone morphogenetic protein 9 (rhBMP9), one of the most osteogenic growth factors of the BMP family. HA was first combined with rhBMP9 and assessed for the adsorption and release of rhBMP9 over 10 days by ELISA. Thereafter, ST2 pre-osteoblasts were investigated by comparing (1) control tissue culture plastic, (2) HA alone, and (3) HA with rhBMP9 (100 ng/mL)...
November 30, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27916815/changes-in-biochemical-parameters-of-the-calcium-phosphorus-homeostasis-in-relation-to-nutritional-intake-in-very-low-birth-weight-infants
#19
Viola Christmann, Charlotte J W Gradussen, Michelle N Körnmann, Nel Roeleveld, Johannes B van Goudoever, Arno F J van Heijst
Preterm infants are at significant risk to develop reduced bone mineralization based on inadequate supply of calcium and phosphorus (Ca-P). Biochemical parameters can be used to evaluate the nutritional intake. The direct effect of nutritional intake on changes in biochemical parameters has not been studied. Our objective was to evaluate the effect of Ca-P supplementation on biochemical markers as serum (s)/urinary (u) Ca and P; alkaline phosphatase (ALP); tubular reabsorption of P (TrP); and urinary ratios for Ca/creatinin (creat) and P/creatinin in Very-Low-Birth-Weight infants on Postnatal Days 1, 3, 5, 7, 10, and 14...
November 29, 2016: Nutrients
https://www.readbyqxmd.com/read/27916732/ghrelin-improves-vascular-autophagy-in-rats-with-vascular-calcification
#20
Mingming Xu, Lin Liu, Chenfang Song, Wei Chen, Shuyan Gui
BACKGROUNDS: This study aimed to investigate whether ghrelin ameliorated vascular calcification (VC) through improving autophagy. METHODS: VC model was induced by nicotine plus vitamin D3 in rats and β-glycerophosphate in vascular smooth muscle cell (VSMC). Calcium deposition was detected by von Kossa staining or alizarin red S staining. ALP activity was also detected. Western blot was used to assess the protein expression. RESULTS: Ghrelin treatment attenuated the elevation of calcium deposition and ALP activity in VC model both in vivo and in vitro...
December 1, 2016: Life Sciences
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