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https://www.readbyqxmd.com/read/28938237/fertility-restoration-with-spermatogonial-stem-cells
#1
Francesca de Michele, Maxime Vermeulen, Christine Wyns
PURPOSE OF REVIEW: This review evaluates the state of the art in terms of challenges and strategies used to restore fertility with spermatogonial stem cells retrieved from prepubertal boys affected by cancer. Although these boys do not yet produce spermatozoa, the only option to preserve their fertility is cryopreservation of spermatogonial stem cells in the form of testicular cell suspensions or whole tissue pieces. Different techniques have been described to achieve completion of spermatogenesis from human, spermatogonial stem cells but none is yet ready for clinical application...
September 21, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28936534/tuneable-nature-of-metal-organic-frameworks-as-heterogeneous-solid-catalysts-for-alcohol-oxidation
#2
Amarajothi Dhakshinamoorthy, Abdullah M Asiri, Hermenegildo Garcia
Selective benzyl alcohol oxidation (BA) to benzaldehyde has been frequently used as a benchmark reaction to evaluate the catalytic activity of metal organic frameworks (MOFs) as oxidation catalysts. Substituted BAs, and aliphatic and allylic alcohols have also been often used as substrates in these studies. In the present review, the current state of the art of MOFs as heterogeneous catalysts for the oxidation of BA and other alcohols is described, grouping the reports according to the nature of the active sites present on the MOFs...
September 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28935945/synovial-tissue-research-a-state-of-the-art-review
#3
Carl Orr, Elsa Vieira-Sousa, David L Boyle, Maya H Buch, Christopher D Buckley, Juan D Cañete, Anca I Catrina, Ernest H S Choy, Paul Emery, Ursula Fearon, Andrew Filer, Danielle Gerlag, Frances Humby, John D Isaacs, Søren A Just, Bernard R Lauwerys, Benoit Le Goff, Antonio Manzo, Trudy McGarry, Iain B McInnes, Aurélie Najm, Constantino Pitzalis, Arthur Pratt, Malcolm Smith, Paul P Tak, Rogier Thurlings, João E Fonseca, Douglas J Veale
This corrects the article DOI: 10.1038/nrrheum.2017.115.
September 22, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28935100/a-critical-review-on-the-prospect-of-polyaniline-grafted-biodegradable-nanocomposite
#4
REVIEW
Mohammad Shahadat, Mohammad Zain Khan, Parveen Fatemeh Rupani, Asha Embrandiri, Saima Sultana, Shaikh Ziauddin Ahammad, S Wazed Ali, T R Sreekrishnan
Among the various electrically conducting polymers, polyaniline (PANI) has gained attentions due to its unique properties and doping chemistry. A number of electrically conducting biodegradable polymers has been synthesized by incorporating a biodegradable content of cellulose, chitin, chitosan, etc. in the matrix of PANI. The hybrid materials are also employed as photocatalysts, antibacterial agents, sensors, fuel cells and as materials in biomedical applications. Furthermore, these biodegradable and biocompatible conducting polymers are employed in tissue engineering, dental implants and targeted drug delivery...
September 6, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28934809/ct-and-mri-techniques-for-imaging-around-orthopedic-hardware
#5
Thuy Duong Do, Reto Sutter, Stephan Skornitzke, Marc-André Weber
Orthopedic hardware impairs image quality in cross-sectional imaging. With an increasing number of orthopedic implants in an aging population, the need to mitigate metal artifacts in computed tomography and magnetic resonance imaging is becoming increasingly relevant. This review provides an overview of the major artifacts in CT and MRI and state-of-the-art solutions to improve image quality. All steps of image acquisition from device selection, scan preparations and parameters to image post-processing influence the magnitude of metal artifacts...
September 21, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28934308/devices-and-tasks-involved-in-the-objective-assessment-of-standing-dynamic-balancing-a-systematic-literature-review
#6
Bálint Petró, Alexandra Papachatzopoulou, Rita M Kiss
BACKGROUND: Static balancing assessment is often complemented with dynamic balancing tasks. Numerous dynamic balancing assessment methods have been developed in recent decades with their corresponding balancing devices and tasks. OBJECTIVE: The aim of this systematic literature review is to identify and categorize existing objective methods of standing dynamic balancing ability assessment with an emphasis on the balancing devices and tasks being used. DATA SOURCES: Three major scientific literature databases (Science Direct, Web of Science, PLoS ONE) and additional sources were used...
2017: PloS One
https://www.readbyqxmd.com/read/28933723/artificial-lipid-membranes-past-present-and-future
#7
REVIEW
Christina G Siontorou, Georgia-Paraskevi Nikoleli, Dimitrios P Nikolelis, Stefanos K Karapetis
The multifaceted role of biological membranes prompted early the development of artificial lipid-based models with a primary view of reconstituting the natural functions in vitro so as to study and exploit chemoreception for sensor engineering. Over the years, a fair amount of knowledge on the artificial lipid membranes, as both, suspended or supported lipid films and liposomes, has been disseminated and has helped to diversify and expand initial scopes. Artificial lipid membranes can be constructed by several methods, stabilized by various means, functionalized in a variety of ways, experimented upon intensively, and broadly utilized in sensor development, drug testing, drug discovery or as molecular tools and research probes for elucidating the mechanics and the mechanisms of biological membranes...
July 26, 2017: Membranes
https://www.readbyqxmd.com/read/28933289/recent-applications-of-silver-amalgam-electrodes-for-analysis-of-pharmaceuticals-and-vitamins
#8
Sylwia Smarzewska, Radovan Metelka, Bogusław Baś, Karel Vytřas
The features and applications of silver amalgam electrodes in electroanalysis of pharmaceuticals and vitamins are summarized in this review. The state-of-art in the preparation and construction of solid silver amalgam electrodes for prolonged and user-friendly use is presented. Although not as widely spread as other electrode materials, silver amalgam possesses a unique and viable combination of favorable electrochemical properties, which are close to ideal mercury electrodes, non-toxic character, high durability and mechanical stability, if properly prepared...
September 20, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28933147/antimicrobial-chitosan-and-chitosan-derivatives-a-review-of-the-structure-activity-relationship
#9
Priyanka Sahariah, Már Másson
This review gives an updated overview of the current state-of-the-art for antimicrobial chitosan and chitosan derivatives and the effects of structural modifications on activity and toxicity. The various synthetic routes introduced for chemical modification of chitosan are discussed and the most common functional groups are highlighted. Different analytical techniques used for structural characterization of the synthesized chitosan derivatives are discussed and critically evaluated. For the purpose of this review, the antimicrobial chitosan derivatives have been classified on the basis of the type of functional group conjugated to the polymer backbone...
September 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28932912/behavioral-cognitive-and-emotional-coping-strategies-of-women-with-endometriosis-a-critical-narrative-review
#10
REVIEW
Cristina Zarbo, Agostino Brugnera, Luigi Frigerio, Chiara Malandrino, Massimo Rabboni, Emi Bondi, Angelo Compare
Endometriosis is a disabling and long-term medical condition affecting quality of life and mental health. Behavioral, cognitive, and emotional coping strategies, emotional intelligence, and metacognition could in part explain the link between the disease and impaired psychological and life functioning. This critical narrative review aimed at examining the state of the art of the relationships between endometriosis and these factors. According to PRISMA principles, we performed a systematic search for quantitative and qualitative studies on multiple electronic databases as regards coping strategies, emotional intelligence, and metacognition in women with endometriosis...
September 21, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/28932739/agonist-binding-to-chemosensory-receptors-a-systematic-bioinformatics-analysis
#11
Fabrizio Fierro, Eda Suku, Mercedes Alfonso-Prieto, Alejandro Giorgetti, Sven Cichon, Paolo Carloni
Human G-protein coupled receptors (hGPCRs) constitute a large and highly pharmaceutically relevant membrane receptor superfamily. About half of the hGPCRs' family members are chemosensory receptors, involved in bitter taste and olfaction, along with a variety of other physiological processes. Hence these receptors constitute promising targets for pharmaceutical intervention. Molecular modeling has been so far the most important tool to get insights on agonist binding and receptor activation. Here we investigate both aspects by bioinformatics-based predictions across all bitter taste and odorant receptors for which site-directed mutagenesis data are available...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28932701/mr-imaging-of-the-traumatic-triangular-fibrocartilaginous-complex-tear
#12
REVIEW
Alex W H Ng, James F Griffith, Cindy S Y Fung, Ryan K L Lee, Cina S L Tong, Clara W Y Wong, Wing Lim Tse, Pak Cheong Ho
Triangular fibrocartilage complex is a major stabilizer of the distal radioulnar joint (DRUJ). However, triangular fibrocartilage complex (TFCC) tear is difficult to be diagnosed on MRI for its intrinsic small and thin structure with complex anatomy. The purpose of this article is to review the anatomy of TFCC, state of art MRI imaging technique, normal appearance and features of tear on MRI according to the Palmar's classification. Atypical tear and limitations of MRI in diagnosis of TFCC tear are also discussed...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28927863/fast-and-slow-thinking-in-distressing-delusions-a-review-of-the-literature-and-implications-for-targeted-therapy
#13
Thomas Ward, Philippa A Garety
The recent literature on reasoning biases in psychosis and delusions is reviewed. The state-of-the-art knowledge from systematic reviews and meta-analyses on the evidence for jumping to conclusions is briefly summarised, before a fuller discussion of the more recent empirical literature on belief flexibility as applied to delusions. The methodology and evidence in relation to studies of belief flexibility and the Bias Against Disconfirmatory Evidence (BADE) across the delusional continuum will be critically appraised, and implications drawn for improving cognitive therapy...
September 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28927700/the-art-of-separation-and-adsorption-historical-review-of-apheresis-in-japan
#14
REVIEW
Hidenori Matsuo
Apheresis therapy was first introduced into Japan from the United State as plasmapheresis by a centrifuge method. However, the invention of hollow fiber has subsequently lead to a membrane plasma separation. Selective removal of the plasma or cell component has been improved and matured in clinical application. Therapeutic apheresis has progressed and diversified with the development of technology for membrane separation by hollow fiber and adsorption with a physicochemical adsorbent in Japan.
September 5, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28926956/carbonic-anhydrase-inhibition-and-the-management-of-hypoxic-tumors
#15
REVIEW
Claudiu T Supuran
Hypoxia and acidosis are salient features of many tumors, leading to a completely different metabolism compared to normal cells. Two of the simplest metabolic products, protons and bicarbonate, are generated by the catalytic activity of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1), with at least two of its isoforms, CA IX and XII, mainly present in hypoxic tumors. Inhibition of tumor-associated CAs leads to an impaired growth of the primary tumors, metastases and reduces the population of cancer stem cells, leading thus to a complex and beneficial anticancer action for this class of enzyme inhibitors...
September 16, 2017: Metabolites
https://www.readbyqxmd.com/read/28926952/medium-access-control-protocols-for-cognitive-radio-ad-hoc-networks-a-survey
#16
REVIEW
Mahdi Zareei, A K M Muzahidul Islam, Sabariah Baharun, Cesar Vargas-Rosales, Leyre Azpilicueta, Nafees Mansoor
New wireless network paradigms will demand higher spectrum use and availability to cope with emerging data-hungry devices. Traditional static spectrum allocation policies cause spectrum scarcity, and new paradigms such as Cognitive Radio (CR) and new protocols and techniques need to be developed in order to have efficient spectrum usage. Medium Access Control (MAC) protocols are accountable for recognizing free spectrum, scheduling available resources and coordinating the coexistence of heterogeneous systems and users...
September 16, 2017: Sensors
https://www.readbyqxmd.com/read/28926429/targeting-histone-acetylation-readers-and-writers-in-leukemia-and-cancer
#17
Christopher B Benton, Warren Fiskus, Kapil N Bhalla
Chromatin packaging of DNA provides a framework for transcriptional regulation. Modifications to DNA and histone proteins in nucleosomes lead to conformational changes, alterations in the recruitment of transcriptional complexes, and ultimately modulation of gene expression. We provide a focused review of control mechanisms that help modulate the activation and deactivation of gene transcription specifically through histone acetylation writers and readers in cancer. The chemistry of these modifications is subject to clinically actionable targeting, including state-of-the-art strategies to inhibit basic oncogenic mechanisms related to histone acetylation...
September 2017: Cancer Journal
https://www.readbyqxmd.com/read/28924922/assessing-the-non-tumorous-liver-implications-for-patient-management-and-surgical-therapy
#18
Pallavi Pandey, Ankur Pandey, Mary Dillhoff, Carl Schmidt, Ihab R Kamel, Timothy M Pawlik
INTRODUCTION: Hepatic resection is performed for various benign and malignant liver tumors. Over the last several decades, there have been improvements in the surgical technique and postoperative care of patients undergoing liver surgery. Despite this, liver failure following an extended hepatic resection remains a critical potential postoperative complication. Patients with underlying parenchymal liver diseases are at particular risk of liver failure due to impaired liver regeneration with an associated mortality risk as high as 60 to 90%...
September 18, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28921173/maximizing-safe-resections-the-roles-of-5-aminolevulinic-acid-and-intraoperative-mr-imaging-in-glioma-surgery-review-of-the-literature
#19
REVIEW
Eric Suero Molina, S Schipmann, W Stummer
Malignant glioma surgery involves the challenge of preserving the neurological status of patients harboring these lesions while pursuing a maximal tumor resection, which is correlated with overall and progression-free survival. Presently, several tools exist for assisting neurosurgeons in visualizing malignant tissue. Fluorescence-guided surgery (FGS) with 5-aminolevulinic acid (5-ALA) has increasingly been used during the last decade for identifying malignant glioma. Intraoperative magnetic resonance imaging (iMRI), first introduced in the mid-1990s, is being evaluated as a further tool to maximize the extent of resection...
September 18, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28921104/development-of-constant-ph-simulation-methods-in-implicit-solvent-and-applications-in-biomolecular-systems
#20
REVIEW
Fernando Luís Barroso daSilva, Luis Gustavo Dias
pH is a critical parameter for biological and technological systems directly related with electrical charges. It can give rise to peculiar electrostatic phenomena, which also makes them more challenging. Due to the quantum nature of the process, involving the forming and breaking of chemical bonds, quantum methods should ideally by employed. Nevertheless, due to the very large number of ionizable sites, different macromolecular conformations, salt conditions, and all other charged species, the CPU time cost simply becomes prohibitive for computer simulations, making this a quite complex problem...
September 18, 2017: Biophysical Reviews
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