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Nature medicine

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https://www.readbyqxmd.com/read/27933367/antipsychotic-inductors-of-brain-hypothermia-and-torpor-like-states-perspectives-of-application
#1
REVIEW
Yury S Tarahovsky, Irina S Fadeeva, Natalia P Komelina, Maxim O Khrenov, Nadezhda M Zakharova
Hypothermia and hypometabolism (hypometabothermia) normally observed during natural hibernation and torpor, allow animals to protect their body and brain against the damaging effects of adverse environment. A similar state of hypothermia can be achieved under artificial conditions through physical cooling or pharmacological effects directed at suppression of metabolism and the processes of thermoregulation. In these conditions called torpor-like states, the mammalian ability to recover from stroke, heart attack, and traumatic injuries greatly increases...
December 8, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27932369/patient-safety-in-community-dementia-services-what-can-we-learn-from-the-experiences-of-caregivers-and-healthcare-professionals
#2
Sophie Behrman, Philip Wilkinson, Helen Lloyd, Charles Vincent
OBJECTIVES: this study aims to explore how patient safety in community dementia services is understood by caregivers, and healthcare professionals. METHODS: cross-sectional analysis of guided one-to-one interviews with 10 caregivers, and 10 healthcare professionals. RESULTS: caregivers and healthcare professionals identified a range of issues including medication errors, mis-communication between professionals, unclear service pathways and the effects of stress on caregivers' behaviour...
December 7, 2016: Age and Ageing
https://www.readbyqxmd.com/read/27931836/erythropoietin-and-thrombopoietin-mimetics-natural-alternatives-to-erythrocyte-and-platelet-disorders
#3
REVIEW
Usha Gutti, Satya Ratan Pasupuleti, Itishri Sahu, Aneesh Kotipalli, Ram Babu Undi, Ravinder Kandi, Raja Gopal Venakata Saladi, Ravi Kumar Gutti
Erythropoietin (EPO) and thrombopoietin (TPO) plays a major role in the regulation of hematopoietic development. Though, blood transfusion was the most widely used method to treat low blood count, over the years with advancements in recombinant technology and drug designing, the EPO and TPO mimetics are dominating the therapeutics industry. On the other hand, the recombinant human EPO and TPO are associated either with reduced half-life or immune reactions. The restoration of alternate medicine in recent years has the hope to overcome limitations associated with recombinant technology, to treat various disorder including blood diseases, with low to no side effects...
December 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/27931527/radiobiology-in-cardiovascular-imaging
#4
REVIEW
Pat Zanzonico, Lawrence Dauer, H William Strauss
The introduction of ionizing radiation in medicine revolutionized the diagnosis and treatment of disease and dramatically improved and continues to improve the quality of health care. Cardiovascular imaging and medical imaging in general, however, are associated with a range of radiobiologic effects, including, in rare instances, moderate to severe skin damage resulting from cardiac fluoroscopy. For the dose range associated with diagnostic imaging (corresponding to effective doses on the order of 10 mSv [1 rem]), the possible effects are stochastic in nature and largely theoretical...
December 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27931138/medicinal-plants-and-natural-products-in-amelioration-of-arsenic-toxicity-a-short-review
#5
Sanijb Bhattacharya
CONTEXT: Chronic arsenic toxicity (arsenicosis) is considered a serious public health menace worldwide, as there is no specific, safe, and efficacious therapeutic management of arsenicosis. OBJECTIVES: To collate the studies on medicinal plants and natural products with arsenic toxicity ameliorative effect, active pre-clinically and/or clinically. METHODS: Literature survey was carried out by using Google, Scholar Google and Pub-Med. Only the scientific journal articles found on the internet for last two decades were considered...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27928834/fast-fourier-based-simulation-of-off-resonance-artifacts-in-steady-state-gradient-echo-mri-applied-to-metal-object-localization
#6
Frank Zijlstra, Job G Bouwman, Ieva Braškutė, Max A Viergever, Peter R Seevinck
PURPOSE: To accelerate simulation of off-resonance artifacts in steady-state gradient echo MRI by using fast Fourier transforms and demonstrate its applicability to metal object localization. THEORY AND METHODS: By exploiting the repetitive nature of steady-state pulse sequences it is possible to use fast Fourier transforms to calculate the MR signal. Based on this principle, a method for fast simulation of off-resonance artifacts was designed. The method was validated against Bloch simulations and MRI scans...
December 7, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27927849/the-effect-of-serum-vitamin-d-levels-on-ovarian-reserve-markers-a-prospective-cross-sectional-study
#7
Panagiotis Drakopoulos, Arne van de Vijver, Valerie Schutyser, Stevan Milatovic, Ellen Anckaert, Johan Schiettecatte, Christophe Blockeel, Michel Camus, Herman Tournaye, Nikolaos P Polyzos
STUDY QUESTION: Is there any association between serum 25-OH vitamin D levels and ovarian reserve markers in infertile women? SUMMARY ANSWER: Vitamin D is not associated with the ovarian reserve markers, anti-mullerian hormone (AMH) and antral follicle count (AFC), in infertile women. WHAT IS KNOWN ALREADY: The mechanism underlying the relationship between vitamin D deficiency and reproduction is still unclear; however, evidence indicates a potential direct negative impact on ovarian function...
December 6, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27926533/andrographolide-impedes-cancer-stemness-and-enhances-radio-sensitivity-in-oral-carcinomas-via-mir-218-activation
#8
Po-Yu Yang, Pei-Ling Hsieh, Tong Hong Wang, Cheng-Chia Yu, Ming-Yi Lu, Yi-Wen Liao, Tzu-Hsin Lee, Chih-Yu Peng
Current evidence suggests that oral cancer stem cells (OCSCs) possess high tumorigenic and metastatic properties as well as chemo- and radioresistance. In this study, we demonstrated that andrographolide, the main bioactive component in the medicinal plant Andrographis, significantly reduced oncogenicity and restored radio-sensitivity of ALDH1+CD44+ OCSCs. Mechanistic studies showed that andrographolide treatment increased the expression of microRNA-218 (miR-218), leading to the downregulation of Bmi1. We showed that knockdown of miR-218 in ALDH1-CD44- non-OCSCs enhanced cancer stemness, while silencing of Bmi1 significantly counteracted it...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925305/extracellular-matrix-in-epitheliochorial-endotheliochorial-and-haemochorial-placentation-and-its-potential-application-for-regenerative-medicine
#9
REVIEW
Ara da Anunciação, A M Mess, D Orechio, B A Aguiar, P O Favaron, M A Miglino
A placenta is defined as structural approximation of maternal and foetal tissues to perform physiological exchange. Associated processes of differentiation and the establishment of its cells take place within the extracellular matrix (ECM) that provides a rich environment of collagens, fibronectins, cytokines and other components. Placental ECM is promising for tissue regeneration purposes, because it has immune tolerance capacities that may cause only minimal rejections of transplants with immunological differences between donor and recipient...
December 7, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27924131/optimizing-micropropagation-of-drought-resistant-pyrus-boissieriana-buhse
#10
Maryam Zakavi, Hossein Askari, Neda Irvani
The present study concentrated on introducing a micropropagation protocol for a drought resistant genotype from Pyrus boissieriana, which is the second most naturally widespread pear species in Iran with proper physiological and medicinal properties. Proliferating microshoot cultures were obtained by placing nodal segments on MS medium supplemented with BAP and IBA or NAA. The highest number of shoots (27 shoots per explant) were obtained with 1.5 mg l(-1) BAP and 0.05 mg l(-1) IBA, but this combination did not produce shoots of desirable length (>1...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27921037/acute-kidney-injury-in-western-countries
#11
REVIEW
Josée Bouchard, Ravindra L Mehta
BACKGROUND: Acute kidney injury (AKI) is frequent and is associated with poor outcomes, including increased mortality, higher risk of chronic kidney disease, and prolonged hospital lengths of stay. The epidemiology of AKI mainly derives from studies performed in Western high-income countries. More limited data are available from Western low-income and middle-income countries (LMICs) located in Central and South America. SUMMARY: In this review, we summarize the most recent data on the epidemiology of AKI in Western countries, aiming to contrast results from industrialized high-income countries with LMICs...
October 2016: Kidney Diseases
https://www.readbyqxmd.com/read/27921036/acute-kidney-injury-in-asia
#12
REVIEW
Li Yang
BACKGROUND: Acute kidney injury (AKI) is a common disorder and is associated with a high morbidity and mortality worldwide. The diversity of the climate and of the socioeconomic and developmental status in Asia has a great influence on the etiology and presentation of AKI in different regions. In view of the International Society of Nephrology's 0by25 initiative, more and more attention has been paid to AKI in Asian countries. SUMMARY: In this review, we summarize the recent achievements with regard to the prevalence and clinical patterns of AKI in Asian countries...
October 2016: Kidney Diseases
https://www.readbyqxmd.com/read/27921034/crowdsourcing-precision-cerebrovascular-health-imaging-and-cloud-seeding-a-million-brains-initiative%C3%A2
#13
David S Liebeskind
Crowdsourcing, an unorthodox approach in medicine, creates an unusual paradigm to study precision cerebrovascular health, eliminating the relative isolation and non-standardized nature of current imaging data infrastructure, while shifting emphasis to the astounding capacity of big data in the cloud. This perspective envisions the use of imaging data of the brain and vessels to orient and seed A Million Brains Initiative™ that may leapfrog incremental advances in stroke and rapidly provide useful data to the sizable population around the globe prone to the devastating effects of stroke and vascular substrates of dementia...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27920947/the-daniel-k-inouye-college-of-pharmacy-scripts-poha-berry-physalis-peruviana-with-potential-anti-inflammatory-and-cancer-prevention-activities
#14
Leng Chee Chang, Mayuramas Sang-Ngern, John M Pezzuto, Carolyn Ma
The Daniel K. Inouye College of Pharmacy, during a historic event in Spring 2016, graduated the first two students in the Pacific region to earn a PhD in pharmaceutical sciences at the University of Hawai'i at Hilo. The college offers PhD programs in these five disciplines: Cancer Biology, Medicinal Chemistry, Pharmaceutics, Pharmacognosy, and Pharmacology. One of the Pharmacognosy dissertations focused on plant-derived natural products with potential anti-inflammatory and cancer chemopreventive activities...
November 2016: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/27919656/biotransformation-of-isofraxetin-6-o-%C3%AE-d-glucopyranoside-by-angelica-sinensis-oliv-diels-callus
#15
Di Zhou, Yuhua Zhang, Zhe Jiang, Yue Hou, Kun Jiao, Chunyan Yan, Ning Li
Isofraxetin-6-O-β-d-glucopyranoside, identified from traditional medicinal herbal Xanthoceras sorbifolia Bunge, has been demonstrated to be a natural neuroinflammatory inhibitor. In order to obtain more derivatives with potential anti-neuroinflammatory effects, biotransformation was carried out. According to the characteristics of coumarin skeleton, suspension cultures of Angelica sinensis (Oliv.) Diels callus (A. sinensis callus) were employed because of the presence of diverse phenylpropanoids biosynthetic enzymes...
November 24, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27919219/ston-exploring-biological-pathways-using-the-sbgn-standard-and-graph-databases
#16
Vasundra Touré, Alexander Mazein, Dagmar Waltemath, Irina Balaur, Mansoor Saqi, Ron Henkel, Johann Pellet, Charles Auffray
BACKGROUND: When modeling in Systems Biology and Systems Medicine, the data is often extensive, complex and heterogeneous. Graphs are a natural way of representing biological networks. Graph databases enable efficient storage and processing of the encoded biological relationships. They furthermore support queries on the structure of biological networks. RESULTS: We present the Java-based framework STON (SBGN TO Neo4j). STON imports and translates metabolic, signalling and gene regulatory pathways represented in the Systems Biology Graphical Notation into a graph-oriented format compatible with the Neo4j graph database...
December 5, 2016: BMC Bioinformatics
https://www.readbyqxmd.com/read/27919007/challenges-in-assignment-of-allosteric-effects-in-cytochrome-p450-catalyzed-substrate-oxidations-to-structural-dynamics-in-the-hemoprotein-architecture
#17
Peter Hlavica
Cytochrome P450s (CYP) represent a superfamily of b-type hemoproteins catalyzing NAD(P)H-dependent oxidative biotransformation of a vast array of natural and xenobiotic compounds. Many eu- and prokaryotic members of this class of monooxygenases display complex non-Michaelis-Menten saturation kinetics, suggestive of homo-/heterotropic cooperativity arising from substrate-/effector-induced allosteric interactions. Here, the paradigm of multiple-ligand occupancy of the catalytic pocket in combination with enzyme oligomerization provides the most favored explanations for the atypical kinetic patterns...
November 25, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/27916903/combined-use-of-zoledronic-acid-augments-ursolic-acid-induced-apoptosis-in-human-osteosarcoma-cells-through-enhanced-oxidative-stress-and-autophagy
#18
Chia-Chieh Wu, Yi-Fu Huang, Chen-Pu Hsieh, Pin-Ju Chueh, Yao-Li Chen
Ursolic acid (UA), a naturally occurring pentacyclic triterpene acid found in many medicinal herbs and edible plants, triggers apoptosis in several tumor cell lines but not in human bone cancer cells. Most recently, we have demonstrated that UA exposure reduces the viability of human osteosarcoma MG-63 cells through enhanced oxidative stress and apoptosis. Interestingly, an inhibitor of osteoclast-mediated bone resorption, zoledronic acid (ZOL), also a third-generation nitrogen-containing bisphosphonate, is effective in the treatment of bone metastases in patients with various solid tumors...
November 30, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27916421/protective-potential-of-averrhoa-bilimbi-fruits-in-ameliorating-the-hepatic-key-enzymes-in-streptozotocin-induced-diabetic-rats
#19
Surya B Kurup, Mini S
BACK GROUND: Diabetes is a mutifactorial disease which leads to several complications. Currently available drug regimens for management of diabetes have certain drawbacks. Need for safer and effective medicines from natural sources having potent antidiabetic activity. Averrhoa bilimbi Linn. (Oxalidaceae) is a medicinal plant and is reported to possess hypoglycemic activity. OBJECTIVE: To investigate the antidiabetic potential of Averrhoa bilimbi fruit extract in streptozotocin-induced diabetic rats...
December 1, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27915455/overexpression-of-atedt1-promotes-root-elongation-and-affects-medicinal-secondary-metabolite-biosynthesis-in-roots-of-transgenic-salvia-miltiorrhiza
#20
Yu Liu, Geng Sun, Zhaohui Zhong, Linyi Ji, Yong Zhang, Jianping Zhou, Xuelian Zheng, Kejun Deng
Medicinal secondary metabolites (salvianolic acids and tanshinones) are valuable natural bioactive compounds in Salvia miltiorrhiza and have widespread applications. Improvement of medicinal secondary metabolite accumulation through biotechnology is necessary and urgent to satisfy their increasing demand. Herein, it was demonstrated that the overexpression of the transcription factor Arabidopsis thaliana-enhanced drought tolerance 1 (AtEDT1) could affect medicinal secondary metabolite accumulation. In this study, we observed that the transgenic lines significantly conferred drought tolerance phenotype...
December 3, 2016: Protoplasma
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