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https://www.readbyqxmd.com/read/28640347/psychotria-viridis-chemical-constituents-from-leaves-and-biological-properties
#1
Débora B S Soares, Lucienir P Duarte, André D Cavalcanti, Fernando C Silva, Ariadne D Braga, Miriam T P Lopes, Jacqueline A Takahashi, Sidney A Vieira-Filho
The phytochemical study of hexane, chloroform and methanol extracts from leaves of Psychotria viridis resulted in the identification of: the pentacyclic triterpenes, ursolic and oleanolic acid; the steroids, 24-methylene-cycloartanol, stigmasterol and β-sitosterol; the glycosylated steroids 3-O-β-D-glucosyl-β-sitosterol and 3-O-β-D-glucosyl-stigmasterol; a polyunsaturated triterpene, squalene; the esters of glycerol, 1-palmitoylglycerol and triacylglycerol; a mixture of long chain hydrocarbons; the aldehyde nonacosanal; the long chain fat acids hentriacontanoic, hexadecanoic and heptadenoic acid; the ester methyl heptadecanoate; the 4-methyl-epi-quinate and two indole alkaloids, N,N-dimethyltryptamine (DMT) and N-methyltryptamine...
April 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28637808/dmt-efficiently-inhibits-hepatic-gluconeogenesis-involving-g%C3%AE-q-signaling-pathway
#2
Ting-Ting Zhou, Fei Ma, Xiao-Fan Shi, Xin Xu, Te Du, Xiao-Dan Guo, Gai-Hong Wang, Liang Yu, Vatcharin Rukachaisirikul, Li-Hong Hu, Jing Chen, Xu Shen
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease with complicated pathogenesis, and targeting gluconeogenesis inhibition is a promising strategy for anti-diabetic drug discovery. G protein-coupled receptors (GPCRs) are classified as distinct families by heterotrimeric G proteins, primarily including Gαs, Gαi and Gαq. Gαs-coupled GPCRs function potently in the regulation of hepatic gluconeogenesis through activating cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA) pathway, and Gαi-coupled GPCRs exhibit inhibitory effect on adenylyl cyclase and reduce intracellular cAMP level...
June 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28635617/the-dosimetric-impact-of-gadolinium-based-contrast-media-in-gbm-brain-patient-plans-for-a-mri-linac
#3
Syed Bilal Ahmad, Moti Raj Paudel, Arman Sarfehnia, Anthony Kim, Geordi Pang, Mark Ruschin, Arjun Sahgal, Brian M Keller
Dosimetric effects of gadolinium based contrast media (Gadovist) were evaluated for the Elekta MRI Linear accelerator (MRL) using the research version of Monaco treatment planning system (TPS). In order to represent a gadolinium uptake it was manually assigned to a phantom as well as to the Gross Tumour Volume (GTV) of 6 Glioblastoma Multiforme (GBM) patients. A preliminary estimate of dose enhancement, due to gadolinium, was performed using the phantom irradiated with a single beam. More complicated assessment was performed for the GBM patients using a 7 field IMRT technique...
June 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28635362/costs-and-effectiveness-of-fingolimod-versus-alemtuzumab-in-the-treatment-of-highly-active-relapsing-remitting-multiple-sclerosis-in-the-uk-retreatment-discount-and-disutility
#4
Stephen M Montgomery, Jeanette Kusel, Richard Nicholas, Nicholas Adlard
OBJECTIVE: Patients with relapsing-remitting multiple sclerosis (RRMS) treated with disease modifying therapies (DMTs) who continue to experience disease activity may be considered for escalation therapies such as fingolimod or may be considered for alemtuzumab. Previous economic modelling used Markov models; applying one alternative technique, discrete event simulation (DES) modelling, allows retreatment and long-term adverse events (AEs) to be included in the analysis. METHODS: A DES was adapted to model relapse-triggered retreatment with alemtuzumab and the effect of including ongoing quality-adjusted life year (QALY) decrements for AEs that extend beyond previous one year Markov cycles...
June 21, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28625125/dreams-and-psychedelics-neurophenomenological-comparison-and-therapeutic-implications
#5
Rainer Kraehenmann
A resurgence of neurobiological and clinical research is currently underway into the therapeutic potential of serotonergic or 'classical' psychedelics, such as the prototypical psychedelic drug lysergic acid diethylamide (LSD), psilocybin (4-phosphoryloxy-N,N-dimethyltryptamine), and ayahuasca - a betacarboline- and dimethyltryptamine (DMT)-containing Amazonian beverage. However, the mechanisms of therapeutic action are still not fully explained. Given that an altered state of consciousness is a common denominator that characterizes all classical psychedelics and given that both rapid eye movement sleep (REMS) and psychedelics modulate perception, mental imagery, emotion activation, fear memory extinction, and sense of self and body, in the present article, these two states of consciousness are systematically compared, and therapeutically relevant conclusions are drawn based on available evidence...
June 18, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28617367/-current-algorithms-of-diagnosis-and-treatment-of-multiple-sclerosis-based-on-the-individual-assessment-of-the-patient
#6
A N Boyko, E I Gusev
This review presents the current knowledge on diagnosis, therapy of relapses of multiple Sclerosis (MS) and disease-modifying therapy (DMT) in MS. Algorithms of diagnosis and therapy of MS are presented. Special attention is paid to the analysis of efficacy, tolerability and safety of DMT in MS.
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28616447/natalizumab-pml-survivors-with-subsequent-ms-treatment-clinico-radiologic-outcome
#7
Elisabeth Maillart, Jean-Sebastien Vidal, David Brassat, Bruno Stankoff, Agnès Fromont, Jérôme de Sèze, Frédéric Taithe, Pierre Clavelou, Bertrand Bourre, Valérie Delvaux, Audrey Rico, Pierre Labauge, Ayman Tourbah, Christine Lebrun, Jean Pelletier, Thibault Moreau, Céline Louapre, Catherine Lubetzki, Caroline Papeix
OBJECTIVE: To describe the clinico-radiologic outcome of MS patients with natalizumab-related progressive multifocal leukoencephalopathy (Nz-PML) surviving and receiving disease-modifying therapy (DMT). METHODS: We describe clinical and radiologic evolution of Nz-PML survivors in an observational retrospective multicenter cohort to clarify the effect of different subsequent MS DMT strategies. Twenty-three patients from 11 centers were analyzed. Outcomes were (1) clinical efficacy of post-PML MS DMT, (2) radiologic efficacy of post-PML MS DMT, (3) radiologic evolution of PML lesion, and (4) disability progression...
May 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28615928/using-a-multidimensional-unfolding-approach-to-assess-multiple-sclerosis-patient-preferences-for-disease-modifying-therapy-a-pilot-study
#8
Angel Perez Sempere, Vanesa Vera-Lopez, Juana Gimenez-Martinez, Elena Ruiz-Beato, Jesús Cuervo, Jorge Maurino
PURPOSE: Multidimensional unfolding is a multivariate method to assess preferences using a small sample size, a geometric model locating individuals and alternatives as points in a joint space. The objective was to evaluate relapsing-remitting multiple sclerosis (RRMS) patient preferences toward key disease-modifying therapy (DMT) attributes using multidimensional unfolding. PATIENTS AND METHODS: A cross-sectional pilot study in RRMS patients was conducted. Drug attributes included relapse prevention, disease progression prevention, side-effect risk and route and schedule of administration...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28607755/access-and-barriers-to-ms-care-in-latin-america
#9
REVIEW
Víctor M Rivera, Miguel Angel Macias
Multiple sclerosis (MS), an epidemiologically emergent disorder in Latin America (LATAM), poses substantial socioeconomic challenges to a region where most countries remain as economies in development. MS is not health priority despite its economic and communitarian impact with a relatively low prevalence. MS treatments in LATAM have evolved from earlier long-term oral steroids and immunosuppression protocols, to platform disease modifying therapies (DMTs), to the current landscape with more advanced therapeutic molecules...
January 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/28607751/assessment-of-treatment-patterns-associated-with-injectable-disease-modifying-therapy-among-relapsing-remitting-multiple-sclerosis-patients
#10
J Nicholas, J J Ko, Y Park, P Navaratnam, H S Friedman, F R Ernst, V Herrera
BACKGROUND: Availability of oral disease-modifying therapy (DMT) for relapsing-remitting multiple sclerosis (RRMS) may affect injectable DMT (iDMT) treatment patterns. OBJECTIVE: The objective of this paper is to evaluate iDMT persistency, reasons for persistency lapses, and outcomes among newly diagnosed RRMS patients. METHODS: Medical records of 300 RRMS patients initiated on iDMT between 2008 and 2013 were abstracted from 18 US-based neurology clinics...
January 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/28572730/characteristics-burden-of-illness-and-physical-functioning-of-patients-with-relapsing-remitting-and-secondary-progressive-multiple-sclerosis-a-cross-sectional-us-survey
#11
Hillary J Gross, Crystal Watson
BACKGROUND: Although most patients with relapsing-remitting multiple sclerosis (RRMS) will develop secondary progressive multiple sclerosis (SPMS), little is known about the burden of multiple sclerosis by disease subtype. This study describes the burden of disease in terms of demographics, disease severity, symptoms, health care resource and disease-modifying therapy (DMT) utilization, work and activity impairment, and physical functioning of SPMS and RRMS patients. METHODS: SPMS and RRMS patient responses from the 2012 and 2013 waves of the US National Health and Wellness Survey were evaluated to detect differences in demographics, disease severity, symptoms, and health care resource and DMT utilization...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28569652/something-new-about-something-old-a-10-year-follow-up-on-classical-and-new-psychoactive-tryptamines-and-results-of-analysis
#12
Álvaro José Palma-Conesa, Mireia Ventura, Liliana Galindo, Francina Fonseca, Marc Grifell, Pol Quintana, Iván Fornís, Cristina Gil, Magí Farré, Marta Torrens
New psychoactive tryptamines may be a public health risk since they intend to mimic the hallucinogenic effects of regulated psychoactive drugs. Few studies describe uses and clinical effects of unregulated new psychoactive tryptamines. This study aims (1) to explore the presence of tryptamines classified as NPS among the substances delivered for analysis to a harm-reduction organization; (2) to describe the substances found in the samples after analysis; and (3) to compare analytical results of regulated vs...
June 1, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28565805/effects-of-dual-modified-resistant-indica-rice-starch-on-azoxymethane-induced-incipient-colon-cancer-in-mice
#13
Huaibo Yuan, Xiping Zhu, Deyi Chen, Wenjuan Wang, Shaohua Meng, Junhui Wang
In this study, the effects of different doses of dual modification-treated (DMT) indica rice resistant starch (IR-RS) on azoxymethane (AOM)-induced early colon cancer in mice were investigated. The investigated factors included body weight, gastrointestinal emptying rate, the number and morphology of aberrant crypt foci (ACFs) and the specific expressions of adenomatous polyposis coli (APC), B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax) and cytochrome c genes. The results demonstrated that DMT IR-RS controlled the increase in the body weights of the mice, increased the gastrointestinal emptying rates and reduced the numbers of ACFs and aberrant crypts...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28562125/a-discrete-choice-experiment-to-determine-uk-patient-preference-for-attributes-of-disease-modifying-treatments-in-multiple-sclerosis
#14
Catherine Bottomley, Andrew Lloyd, Gary Bennett, Nicholas Adlard
AIMS: The recent licensing of Disease Modifying Treatments (DMTs) for Multiple Sclerosis (MS) has increased available treatment options. The aim of this study was to explore MS patients' preference for the different attributes of DMTs in the UK. MATERIALS AND METHODS: Attributes (treatment characteristics) for inclusion in the discrete choice experiment (DCE) were determined through published literature and interviews with 12 people with MS. Seven attributes were selected...
June 14, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28560548/media-use-sports-activities-and-motor-fitness-in-childhood-and-adolescence
#15
Sebastian Kaiser-Jovy, Anja Scheu, Klaus Greier
BACKGROUND: Physical activity is one of the key determinants of physical, mental, and social health of children and adolescents. Therefore, the early development of health-relevant behavior patterns is of high relevance. AIM: To examine the impact of selected socioeconomic factors as well as media consumption, on sports activities and the motor skills of 10- to 14-year-old secondary school students. METHODS: Body height and body weight were measured...
May 30, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28554311/the-role-of-sigma-1-receptor-an-intracellular-chaperone-in-neurodegenerative-diseases
#16
Botond Penke, Lívia Fülöp, Mária Szűcs, Ede Frecska
Widespread protein aggregation occurs in the living system under stress or during aging, owing to disturbance of endoplasmic reticulum (ER) proteostasis. Many neurodegenerative diseases may have a common mechanism: the failure of protein homeostasis. Perturbation of ER results in unfolded protein response (UPR). Prolonged chronical UPR may activate apoptotic pathways and cause cell death. ER is associated to mitochondria by the mitochondria-associated ER-membrane, MAM. The sigma-1 receptor (Sig-1R), a well-known ER-chaperone localizes in the MAM...
May 28, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28540034/ayahuasca-dimethyltryptamine-and-psychosis-a-systematic-review-of-human-studies
#17
REVIEW
Rafael G Dos Santos, José Carlos Bouso, Jaime E C Hallak
Ayahuasca is a hallucinogen brew traditionally used for ritual and therapeutic purposes in Northwestern Amazon. It is rich in the tryptamine hallucinogens dimethyltryptamine (DMT), which acts as a serotonin 5-HT2A agonist. This mechanism of action is similar to other compounds such as lysergic acid diethylamide (LSD) and psilocybin. The controlled use of LSD and psilocybin in experimental settings is associated with a low incidence of psychotic episodes, and population studies corroborate these findings. Both the controlled use of DMT in experimental settings and the use of ayahuasca in experimental and ritual settings are not usually associated with psychotic episodes, but little is known regarding ayahuasca or DMT use outside these controlled contexts...
April 2017: Therapeutic Advances in Psychopharmacology
https://www.readbyqxmd.com/read/28537110/three-year-clinical-outcomes-of-relapsing-multiple-sclerosis-patients-treated-with-dimethyl-fumarate-in-a-united-states-community-health-center
#18
Kyle Smoot, Kateri J Spinelli, Tamela Stuchiner, Lindsay Lucas, Chiayi Chen, Lois Grote, Elizabeth Baraban, Kiren Kresa-Reahl, Stanley Cohan
BACKGROUND: Following approval of dimethyl fumarate (DMF), we established a registry of relapsing multiple sclerosis (RMS) patients taking DMF at our community MS center. OBJECTIVE: To track DMF patients' tolerability, disease progression, and lymphopenia. METHODS: Patients prescribed DMF for RMS from March 2013 to March 2016 were prospectively enrolled ( N = 412). Baseline data, clinical relapses, magnetic resonance imaging (MRI) activity, discontinuation, and lymphocyte counts were captured through chart review...
May 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28526762/exacerbation-of-thromboinflammation-by-hyperglycemia-precipitates-cerebral-infarct-growth-and-hemorrhagic-transformation
#19
Jean-Philippe Desilles, Varouna Syvannarath, Véronique Ollivier, Clément Journé, Sandrine Delbosc, Célina Ducroux, William Boisseau, Liliane Louedec, Lucas Di Meglio, Stéphane Loyau, Martine Jandrot-Perrus, Louis Potier, Jean-Baptiste Michel, Mikael Mazighi, Benoit Ho-Tin-Noé
BACKGROUND AND PURPOSE: Admission hyperglycemia is associated with a poor outcome in acute ischemic stroke. How hyperglycemia impacts the pathophysiology of acute ischemic stroke remains largely unknown. We investigated how preexisting hyperglycemia increases ischemia/reperfusion cerebral injury. METHODS: Normoglycemic and streptozotocin-treated hyperglycemic rats were subjected to transient middle cerebral artery occlusion. Infarct growth and brain perfusion were assessed by magnetic resonance imaging...
May 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28525587/assessing-the-psychedelic-after-glow-in-ayahuasca-users-post-acute-neurometabolic-and-functional-connectivity-changes-are-associated-with-enhanced-mindfulness-capacities
#20
Frederic Sampedro, Mario de la Fuente Revenga, Marta Valle, Natalia Roberto, Elisabet Domínguez-Clavé, Matilde Elices, Luís Eduardo Luna, José Alexandre S Crippa, Jaime E C Hallak, Draulio B de Araujo, Pablo Friedlander, Steven A Barker, Enrique Álvarez, Joaquim Soler, Juan C Pascual, Amanda Feilding, Jordi Riba
Background: Ayahuasca is a plant tea containing the psychedelic 5-HT2A agonist N,N-dimethyltryptamine (DMT) and harmala monoamine-oxidase inhibitors. Acute administration leads to neurophysiological modifications in brain regions of the default mode network (DMN), purportedly through a glutamatergic mechanism. Post-acutely, ayahuasca potentiates mindfulness capacities in volunteers, and induces rapid and sustained antidepressant effects in treatment-resistant patients. However, the mechanisms underlying these fast and maintained effects are poorly understood...
May 19, 2017: International Journal of Neuropsychopharmacology
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