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https://www.readbyqxmd.com/read/28735526/the-biocompatibility-of-bone-cements-progress-in-methodological-approach
#1
Carlo Dall'Oca, Tommaso Maluta, Gian Mario Micheloni, Matteo Cengarle, Giampaolo Morbioli, Paolo Bernardi, Andrea Sbarbati, Daniele Degl'Innocenti, Franco Lavini, Bruno Magnan
The ideal bone graft substitute should have certain properties and there are many studies dealing with mixture of polymethylmetacrilate (PMMA) and β-tricalciumphospate (β-TCP) presenting the best characteristics of both. Scanning Electron Microscopy (SEM), for ultra-structural data, resulted a very reliable in vivo model to better understand the bioactivity of a cement and to properly evaluate its suitability for a particular purpose. The present study aims to further improve the knowledge on osteointegration development, using both parameters obtained with the Environmental Scanning Electron Microscopy (ESEM) and focused histological examination...
May 4, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735226/perinatal-fluoxetine-effects-on-social-play-the-hpa-system-and-hippocampal-plasticity-in-pre-adolescent-male-and-female-rats-interactions-with-pre-gestational-maternal-stress
#2
Mary Gemmel, Mariah Hazlett, Eszter Bögi, Sonsoles De Lacalle, Lesley A Hill, Nikolaos Kokras, Geoffrey L Hammond, Christina Dalla, Thierry D Charlier, Jodi L Pawluski
Selective serotonin reuptake inhibitor medications (SSRIs) are the first lines of treatment for maternal affective disorders, and are prescribed to up to 10% of pregnant women. Concern has been raised about how perinatal exposure to these medications affect offspring neurobehavioral outcomes, particularly those related to social interactions, as recent research has reported conflicting results related to autism spectrum disorder (ASD) risk in children prenatally exposed to SSRIs. Therefore, the aim of this work was to investigate the effects of perinatal exposure to the SSRI fluoxetine on social play behaviors and the hypothalamic pituitary adrenal system, using a model of pre-gestational maternal stress...
July 15, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28734649/maxillary-and-mandibular-non-hodgkin-lymphoma-with-concurrent-periapical-endodontic-disease-diagnosis-and-management
#3
Jennifer M Dolan, Anna DeGraft-Johnson, Neville McDonald, Brent B Ward, Tycel J Phillips, Stephanie M Munz
Extranodal non-Hodgkin lymphoma (NHL) in the oral region can present similarly to diseases of odontogenic origin. The objective of this report was to describe a rare case of maxillary and mandibular NHL that presented similarly to and concurrently with lesions of odontogenic origin.A unique case of extranodal NHL, which presented at the apices of maxillary and mandibular teeth in conjunction with lesions of odontogenic origin in a 68-year-old white man, is described. The patient sought care because of a lesion in the right maxillary paranasal region that caused him paresthesia...
July 19, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28732031/breast-tissue-ablation-with-irreversible-electroporation-in-rabbits-a-safety-and-feasibility-study
#4
Wenlong Zhang, Wanning Wang, Wei Chai, Xiaomei Luo, Jiannan Li, Jian Shi, Liqi Bi, Lizhi Niu
BACKGROUND AND AIM: Irreversible electroporation (IRE) was confirmed to control several solid tumors effectively in vivo. Our preclinical study aimed to assess the feasibility and safety of IRE in the breast of rabbit. METHODS: Thirty New Zealand white rabbits were randomly divided into 3 groups of 10 rabbits (control group, IRE group A, and B). Two mono-electrode needles were inserted into the breast tissue by percutaneous puncture. Electrocardiogram and vital signs were monitored before, during, and after ablation...
2017: PloS One
https://www.readbyqxmd.com/read/28731709/agronomic-effectiveness-of-granulated-and-powdered-p-exchanged-mg-al-ldh-relative-to-struvite-and-map
#5
Maarten Everaert, Fien Degryse, Mike J McLaughlin, Dirk E De Vos, Erik Smolders
Layered double hydroxides (LDHs) used to recover P from wastewater have recently been proposed as new slow-release fertilizers. Here, the use of P-exchanged Mg-Al LDHs as powdered or granulated fertilizer is explored and compared with mono-ammonium phosphate (MAP), a fully water-soluble fertilizer, and with struvite, a recycled phosphate fertilizer with lower solubility. First, these three fertilizers were compared in a 100-day incubation experiment using P diffusion visualization and chemical analysis to assess P release from either granules or powdered fertilizer in three different soils...
July 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28731663/-pulmonary-actinomycosis-and-tuberculosis-a-comorbidity-pediatric-case
#6
Elsa D Bisero, Graciela F Luque, Cristina N Rizzo, Alejandra E Zapata, María S Cuello
Actinomycosis is a chronic suppurative infection, produced by anaerobic Gram-positive bacteria or microaerobic Actinomyces species. It is rare in children and adolescents and it is more common in immunocompromised. Mycobacterium tuberculosis collaborates on the development of the disease. Pulmonary involvement appears as a picture of chronic condensation that does not improve with conventional antibiotic treatment. Classic complications affecting the thoracic wallwith drainage in «sulfur granule» and fistulization are described less frequently nowadays...
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28731002/neuropathogenesis-by-chandipura-virus-an-acute-encephalitis-syndrome-in-india
#7
REVIEW
Sourish Ghosh, Anirban Basu
Chandipura virus (CHPV) has been contributing to the rising number of premature deaths due to acute encephalitis syndrome for over a decade in India. CHPV belongs to the family Rhabdoviridae. Neuropathogenesis of CHPV has been well established but the exact route of entry into the central nervous system (CNS) and the triggering factor for neuronal death are still unknown. Rabies virus and vesicular stomatitis virus, which are related closely to CHPV, enter the CNS retrogradely from peripheral or olfactory neurons...
January 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28730385/the-role-of-f-actin-in-the-transport-and-secretion-of-chromaffin-granules-an-historic-perspective
#8
REVIEW
Luis M Gutiérrez, José Villanueva
Actin is one of the most ubiquitous protein playing fundamental roles in a variety of cellular processes. Since early in the 1980s, it was evident that filamentous actin (F-actin) formed a peripheral cortical barrier that prevented vesicles to access secretory sites in chromaffin cells in culture. Later, around 2000, it was described that the F-actin structure accomplishes a dual role serving both vesicle transport and retentive purposes and undergoing dynamic transient changes during cell stimulation. The complex role of the F-actin cytoskeleton in neuroendocrine secretion was further evidenced when it has been proved to participate in the scaffold structure holding together the secretory machinery at active sites and participate in the generation of mechanical forces that drive the opening of the fusion pore, during the first decade of the present century...
July 20, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28730320/esophageal-bezoar-due-to-karaya-gum-granules-used-as-a-laxative
#9
Sern Wei Yeoh
Esophageal obstruction from soluble fiber laxatives, such as karaya gum, has been rarely reported in the literature. However, as such preparations are widely commercially available, it is important for gastroenterologists to be aware of their potential to form a bezoar in the esophagus due to swelling on contact with liquid. This report highlights such a case and discusses its challenging management.
July 20, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28729759/transcriptome-wide-identification-and-characterization-of-starch-branching-enzyme-in-finger-millet
#10
Rajhans Tyagi, Apoorv Tiwari, Vijay Kumar Garg, Sanjay Gupta
Starch-branching enzymes (SBEs) are one of the four major enzyme classes involved in starch biosynthesis in plants and play an important role in determining the structure and physical properties of starch granules. Multiple SBEs are involved in starch biosynthesis in plants. Finger millet is calcium rich important serial crop belongs to grass family and the transcriptome data of developing spikes is available on NCBI. In this study it was try to find out the gene sequence of starch branching enzyme and annotate the sequence and submit the sequence for further use...
2017: Bioinformation
https://www.readbyqxmd.com/read/28728906/surgical-management-of-strabismus-following-choroidal-melanoma-plaque-brachytherapy
#11
Shatha H Alfreihi, Stacy L Pineles, Tara A McCannel, Angelica M Prada, Federico G Velez
PURPOSE: To characterize intraoperative findings, surgical approach, and postoperative outcomes in patients undergoing strabismus surgery following plaque brachytherapy for ocular melanoma. METHODS: The records of all patients who underwent plaque brachytherapy for choroidal melanoma between May 2007 and June 2016 were reviewed retrospectively to identify those who subsequently required strabismus surgery. RESULTS: Of the 461 patients who underwent plaque brachytherapy during the study period, 13 (2...
July 17, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28727810/cucumber-mosaic-virus-coat-protein-modulates-the-accumulation-of-2b-protein-and-antiviral-silencing-that-causes-symptom-recovery-in-planta
#12
Xiao-Peng Zhang, De-Shui Liu, Teng Yan, Xiao-Dong Fang, Kai Dong, Jin Xu, Ying Wang, Jia-Lin Yu, Xian-Bing Wang
Shoot apical meristems (SAM) are resistant to most plant viruses due to RNA silencing, which is restrained by viral suppressors of RNA silencing (VSRs) to facilitate transient viral invasion of the SAM. In many cases chronic symptoms and long-term virus recovery occur, but the underlying mechanisms are poorly understood. Here, we found that wild-type Cucumber mosaic virus (CMVWT) invaded the SAM transiently, but was subsequently eliminated from the meristems. Unexpectedly, a CMV mutant, designated CMVRA that harbors an alanine substitution in the N-terminal arginine-rich region of the coat protein (CP) persistently invaded the SAM and resulted in visible reductions in apical dominance...
July 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28727742/physical-structure-and-absorption-properties-of-tailor-made-porous-starch-granules-produced-by-selected-amylolytic-enzymes
#13
Yi-Seul Jung, Byung-Hoo Lee, Sang-Ho Yoo
Porous starch granules (PSGs) with various pores and cavity sizes were prepared by amylolysis enzymes. The greatest hydrolysis rate on corn starch granule was observed with α-amylase, followed by gluco- and β-amylases. Temperature increase enhanced glucoamylase reaction rate more drastically than other enzyme treatments. Final hydrolysis level with glucoamylase reached to 66.9%, close to 67.5% of α-amylolysis. The α-amylase-treated PSGs displayed the greatest pore size and ratio of cavity-to-granule diameters...
2017: PloS One
https://www.readbyqxmd.com/read/28727479/extracellular-chloride-is-required-for-efficient-platelet-aggregation
#14
Kirk A Taylor, Darren G S Wilson, Matthew T Harper, Nicholas Pugh
Anion channels perform a diverse range of functions and have been implicated in ATP release, volume regulation, and phosphatidylserine exposure. Platelets have been shown to express several anion channels but their function is incompletely understood. Due to a paucity of specific pharmacological blockers, we investigated the effect of extracellular chloride substitution on platelet activation using aggregometry and flow cytometry. In the absence of extracellular chloride, we observed a modest reduction of the maximum aggregation response to thrombin or collagen-related peptide...
July 20, 2017: Platelets
https://www.readbyqxmd.com/read/28727170/entire-papilla-preservation-technique-in-the-regenerative-treatment-of-deep-intrabony-defects-1-year-results
#15
Serhat Aslan, Nurcan Buduneli, Pierpaolo Cortellini
AIM: This study evaluates the clinical performance of a novel tunnel-like surgical technique in the treatment of isolated deep intrabony defects. MATERIAL AND METHODS: Twelve patients presenting with at least one isolated deep intrabony defect received regenerative periodontal treatment with "entire papilla preservation" technique. Access to the intrabony defect for debridement was provided by a bevelled vertical releasing incision positioned in the buccal gingiva of the neighbouring interdental space...
July 20, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28726976/absence-of-transforming-growth-factor-beta-1-in-murine-platelets-reduces-neointima-formation-without-affecting-arterial-thrombosis
#16
Katrin Schaefer, Eva Schütz, Magdalena L Bochenek, Dennis R Riehl, Markus Bosmann, Thomas Münzel, Stavros Konstantinides, Katrin Schäfer
Platelet degranulation at the site of vascular injury prevents bleeding and may affect the chronic vascular wound healing response. Transforming Growth Factor (TGF)-β1 is a major component of platelet α-granules known to accumulating in thrombi. It was our aim to determine the role of TGFβ1 released from activated platelets for neointima formation following arterial injury and thrombosis. Mice with platelet-specific deletion of TGFβ1 (Plt.TGFβ-KO) underwent carotid artery injury. Immunoassays confirmed the absence of active TGFβ1 in platelet releasates and plasma of Plt...
July 20, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28726787/alkbh7-drives-a-tissue-and-sex-specific-necrotic-cell-death-response-following-alkylation-induced-damage
#17
Jennifer J Jordan, Sophea Chhim, Carrie M Margulies, Mariacarmela Allocca, Roderick T Bronson, Arne Klungland, Leona D Samson, Dragony Fu
Regulated necrosis has emerged as a major cell death mechanism in response to different forms of physiological and pharmacological stress. The AlkB homolog 7 (ALKBH7) protein is required for regulated cellular necrosis in response to chemotherapeutic alkylating agents but its role within a whole organism is unknown. Here, we show that ALKBH7 modulates alkylation-induced cellular death through a tissue and sex-specific mechanism. At the whole-animal level, we find that ALKBH7 deficiency confers increased resistance to MMS-induced toxicity in male but not female mice...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726779/maml1-acts-cooperatively-with-gli-proteins-to-regulate-sonic-hedgehog-signaling-pathway
#18
Roberta Quaranta, Maria Pelullo, Sabrina Zema, Francesca Nardozza, Saula Checquolo, Dieter Matthias Lauer, Francesca Bufalieri, Rocco Palermo, Maria Pia Felli, Alessandra Vacca, Claudio Talora, Lucia Di Marcotullio, Isabella Screpanti, Diana Bellavia
Sonic hedgehog (Shh) signaling is essential for proliferation of cerebellar granule cell progenitors (GCPs) and its misregulation is linked to various disorders, including cerebellar cancer medulloblastoma. The effects of Shh pathway are mediated by the Gli family of transcription factors, which controls the expression of a number of target genes, including Gli1. Here, we identify Mastermind-like 1 (Maml1) as a novel regulator of the Shh signaling since it interacts with Gli proteins, working as a potent transcriptional coactivator...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726740/cyclic-peptides-as-novel-therapeutic-microbicides-engineering-of-human-defensin-mimetics
#19
REVIEW
Annarita Falanga, Ersilia Nigro, Margherita Gabriella De Biasi, Aurora Daniele, Giancarlo Morelli, Stefania Galdiero, Olga Scudiero
Cyclic peptides are receiving significant attention thanks to their antimicrobial activity and high serum stability, which is useful to develop and design novel antimicrobial agents. Antimicrobial peptides appear to be key components of innate defences against bacteria, viruses, and fungi. Among the others, defensins possess a strong microbicidial activity. Defensins are cationic and amphipathic peptides with six cysteine residues connected by three disulfide bonds found in plants, insects, and mammals; they are divided in three families: α-, β-, and θ-defensins...
July 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28726666/-pathomorphological-changes-under-latent-mastoiditis
#20
Kh Chitadze, T Jorbenadze, M Adamia
In our opinion it is caused by incomplete awareness of the distribution of pathological process and the character of morphological changes in the patients. In this regard, we studied structural changes in the soft and bone tissue taken from various cavities of the middle ear system. Operating material was formed in paraffin after the fixation and proper processing. We proceed with decalcification of bone tissues in 15-20% nitric acid. We painted 5-6 mm thick peels prepared on the rotating microtome with hematoxylin and eosin...
June 2017: Georgian Medical News
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