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https://www.readbyqxmd.com/read/27885368/structural-characterization-of-eash-aspergillus-japonicus-an-oxidase-involved-in-cycloclavine-biosynthesis
#1
Dorota Jakubczyk, Lorenzo Caputi, Clare E M Stevenson, David M Lawson, Sarah E O'Connor
Aj_EasH is a non-heme iron- and α-keto-glutarate-dependent oxidase that is responsible for an unusual cyclopropyl ring formation in the biosynthesis of the fungal ergot alkaloid cycloclavine. The three dimensional structure of Aj_EasH (2.2 Å resolution) reported here provides insight into the mechanism of this unusual and complex reaction.
November 25, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27883998/the-non-ergot-derived-dopamine-agonist-quinagolide-as-an-anti-endometriotic-agent
#2
Alpaslan Akyol, Ebru Kavak, Hadice Akyol, Şehmus Pala, Ferit Gürsu
AIM: The study aimed to investigate the efficacy of a dopamine agonist, quinagolide, on experimentally induced endometriosis in a rat model. METHODS: Twenty female Wistar rats were used in this experiment. Endometriosis was surgically induced by transplantation of autologous endometrial tissue. A second laparotomy was performed 4 weeks after the first one to assess the pre-treatment implant volumes, and peritoneal lavage with saline solution was performed to assess the peritoneal cytokine levels...
November 25, 2016: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/27882516/risk-of-medication-overuse-headache-across-classes-of-treatments-for-acute-migraine
#3
Kristian Thorlund, Christina Sun-Edelstein, Eric Druyts, Steve Kanters, Shanil Ebrahim, Rahul Bhambri, Elodie Ramos, Edward J Mills, Michel Lanteri-Minet, Stewart Tepper
BACKGROUND: The most commonly prescribed medications used to treat migraine acutely are single analgesics, ergots, opioids, and triptans. Due to varying mechanisms of action across drug classes, there is reason to believe that some classes may be less likely than others to elicit Medication Overuse Headache (MOH) than others. We therefore aimed to determine whether certain classes of acute migraine drugs are more likely to elicit MOH than others. METHODS: A comprehensive systematic literature was conducted to identify studies of varying designs that reported on MOH within the considered treatment classes...
December 2016: Journal of Headache and Pain
https://www.readbyqxmd.com/read/27873003/localization-of-ergot-alkaloids-in-sclerotia-of-claviceps-purpurea-by-matrix-assisted-laser-desorption-ionization-mass-spectrometry-imaging
#4
Julian Dopstadt, Simeon Vens-Cappell, Lisa Neubauer, Paul Tudzynski, Benedikt Cramer, Klaus Dreisewerd, Hans-Ulrich Humpf
The fungus Claviceps purpurea produces highly toxic ergot alkaloids and accumulates these in the hardened bodies of fungal mycelium. These so-called sclerotia, or ergot bodies, replace the crop seed of infected plants, which can include numerous important food- and feedstuff such as rye and wheat. While several studies have explored details of the infection process and development of ergot bodies, little information is available on the spatial distribution of the mycotoxins in the sclerotia. Here we used matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) at a lateral resolution of 35 μm to visualize the distribution of two representative alkaloids, ergocristine and ergometrine, produced by Ecc93 and Gal 310 variants of C...
November 21, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27861837/cardiovascular-events-conditions-and-procedures-among-people-with-episodic-migraine-in-the-us-population-results-from-the-american-migraine-prevalence-and-prevention-ampp-study
#5
Dawn C Buse, Michael L Reed, Kristina M Fanning, Tobias Kurth, Richard B Lipton
BACKGROUND: Though migraine, particularly migraine with aura, is a cardiovascular (CV) risk factor, the scope and distribution of cardiovascular disease in representative samples of people with migraine are not known. This is important because many widely used acute migraine treatments, including triptans, ergot alkaloids, and nonsteroidal anti-inflammatory drugs, carry precautions, warnings, or contraindications for use in persons with CV disease. OBJECTIVES: To assess the scope and distribution of cardiovascular events, conditions, and procedures in persons with episodic migraine in a representative sample of the US population, using data from the American Migraine Prevalence and Prevention (AMPP) Study...
November 12, 2016: Headache
https://www.readbyqxmd.com/read/27830762/production-of-ricinoleic-acid-containing-monoestolide-triacylglycerides-in-an-oleaginous-diatom-chaetoceros-gracilis
#6
Masataka Kajikawa, Tatsuki Abe, Kentaro Ifuku, Ken-Ichi Furutani, Dongyi Yan, Tomoyo Okuda, Akinori Ando, Shigenobu Kishino, Jun Ogawa, Hideya Fukuzawa
Ricinoleic acid (RA), a hydroxyl fatty acid, is suitable for medical and industrial uses and is produced in high-oil-accumulating organisms such as castor bean and the ergot fungus Claviceps. We report here the efficient production of RA in a transgenic diatom Chaetoceros gracilis expressing the fatty acid hydroxylase gene (CpFAH) from Claviceps purpurea. In transgenic C. gracilis, RA content increased at low temperatures, reaching 2.2 pg/cell when cultured for 7 d at 15 °C, without affecting cell growth, and was enhanced (3...
November 10, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27796464/ergot-and-non-ergot-dopamine-agonists-and-heart-failure-in-patients-with-parkinson-s-disease
#7
François Montastruc, Florence Moulis, Mélanie Araujo, Leila Chebane, Olivier Rascol, Jean-Louis Montastruc
PURPOSE: Some studies have suggested a potential risk of heart failure in patients with Parkinson's disease receiving dopamine (DA) agonists. However, the results are conflicting. We used VigiBase®, the World Health Organization (WHO) Global Individual Case Safety Reports (ICSRs) database, to investigate a potential signal strengthening of heart failure with DA agonists in Parkinsonian patients older than 45 years. METHODS: A case/non-case (disproportionality) analysis was performed in Vigibase® using ICSRs registered between 1978 and May 2016...
October 27, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27775849/continuous-flow-homolytic-aromatic-substitution-with-electrophilic-radicals-a-fast-and-scalable-protocol-for-trifluoromethylation
#8
Júlia L Monteiro, Paula F Carneiro, Petteri Elsner, Dominique M Roberge, Peter G M Wuts, Katherine C Kurjan, Bernhard Gutmann, C Oliver Kappe
We report an operationally simple and rapid continuous flow radical C-C bond formation under Minisci-type reaction conditions. The transformations are performed at or below room temperature employing hydrogen peroxide (H2 O2 ) and dimethylsulfoxide (DMSO) as reagents in the presence of an Fe(II) catalyst. For electron-rich aromatic and heteroaromatic substrates, C-C bond formation proceeds satisfactorily with electrophilic radicals including (.) CF3 , (.) C4 F9 , (.) CH2 CN, and (.) CH2 CO2 Et. In contrast, electron-poor substrates exhibit minimal reactivity...
October 24, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27765939/inadvertent-methylergonovine-administration-to-a-neonate
#9
Bryan M Corbett, Charles O'Connell, Mallory A Boutin, Nabil I Fatayerji, Charles W Sauer
BACKGROUND Methylergonovine is an ergot alkaloid used to treat post-partum hemorrhage secondary to uterine atony. Mistaking methylergonovine for vitamin K with accidental administration to the neonate is a rare iatrogenic illness occurring almost exclusively in the delivery room setting. Complications of ergot alkaloids in neonates include respiratory depression, seizures, and death. CASE REPORT A term infant was inadvertently given 0.1 mg of methylergonovine intramuscularly in the right thigh. The error was only noted when the vial of medication was scanned, after administration, identifying it as methylergonovine rather than vitamin K...
October 21, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27765252/newly-discovered-ergot-alkaloids-in-sorghum-ergot-claviceps-africana-occurring-for-the-first-time-in-israel
#10
J A Shimshoni, O Cuneah, M Sulyok, R Krska, E Sionov, S Barel, Y Meller Harel
Sorghum ergot is a disease caused commonly by C. africana. In 2015, ergot was identified for the first time in sorghum fields in Israel, leading to measures of eradication and quarantine. The aims of the study were to identify the ergot species by molecular and ergot alkaloid profile analysis, to determine the ergot alkaloid profile in pure honeydew and in infected sorghum silages and to estimate the safety of sorghum silages as a feed source. C. africana was rapidly and reliably identified by microscopical and molecular analysis...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27760024/development-and-validation-of-an-analytical-method-for-determination-of-ergot-alkaloids-in-animal-feedingstuffs-with-high-performance-liquid-chromatography-fluorescence-detection
#11
E Kowalczyk, E Patyra, A Grelik, K Kwiatek
A high performance liquid chromatography combined with fluorescence detection (HPLC-FLD) method was developed for determination of five ergot alkaloids (EA): ergometrine, ergotamine, ergocornine, ergocrypine and ergocristine in animal feedingstuffs. The method was based on the application of QuEChERS salts for extraction and modified QuEChERS dispersive SPE for the cleanup step. Alkaloids separation was performed on a C18, 250 mm x 4.6 mm, 5 μm column with the mobile phase containing ammonium carbonate and acetonitrile...
September 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/27725534/transdermal-patch-of-rotigotine-attenuates-freezing-of-gait-in-patients-with-parkinson-s-disease-an-open-label-comparative-study-of-three-non-ergot-dopamine-receptor-agonists
#12
Ken Ikeda, Takehisa Hirayama, Takanori Takazawa, Kiyokazu Kawabe, Yasuo Iwasaki
Objective Parkinson's disease (PD) is characterized by the progressive degeneration of the nigrostriatal dopaminergic neurons. Rotigotine is a non-ergot dopamine receptor agonist (DA). Its transdermal patch maintains the effective concentrations for 24 hours. Freezing of gait (FOG) is a common and devastating symptom in PD patients. Little is known about therapeutic effects of rotigotine on FOG in PD patients. Herein we compared how three non-ergot DAs of rotigotine, pramipexole LA and ropinirole CR influence FOG, besides classical motor deficits in PD patients...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27669299/vasoactivity-and-vasoconstriction-changes-in-cattle-related-to-time-off-toxic-endophyte-infected-tall-fescue
#13
James L Klotz, Glen E Aiken, Jessica R Bussard, Andrew P Foote, David L Harmon, Ben M Goff, F Neal Schrick, James R Strickland
Previous research has indicated that serotonergic and α-adrenergic receptors in peripheral vasculature are affected by exposure of cattle grazing toxic endophyte-infected (E+; Epichlöe coenophialia) tall fescue (Lolium arundinaceum). The objective of this experiment was to determine the period of time necessary for the vascular effects of ergot alkaloids to subside. Two experiments were conducted to investigate changes in vascular contractile response and vasoconstriction over time relative to removal from an ergot alkaloid-containing E+ tall fescue pasture...
2016: Toxins
https://www.readbyqxmd.com/read/27644255/field-testing-of-the-ichd-3%C3%AE-and-expert-opinion-criteria-for-chronic-migraine
#14
Huahua Jiang, Yong Deng, Yixin Zhang, Jieli Jin, Xueying Kong, Qiuwen Zhu, Kuiyun Wang, Jiying Zhou
BACKGROUND: Chronic headache (CrH) occurs commonly in the population, and chronic migraine (CM) accounts for much of the CrH. Diagnostic criteria for CM remain controversial, and this could lead to undertreatment of CM. The purpose of this study was to analyze the clinical profiles of CM and to field test the International Classification of Headache Disorders-3β criteria (ICHD-3β) and Expert Opinion criteria (EO) for CM application. METHODS: We retrospectively reviewed the medical records of CrH patients in our headache clinic during the period...
December 2016: Journal of Headache and Pain
https://www.readbyqxmd.com/read/27626256/-conservative-treatment-of-pelvic-varicose-veins-indications-for-and-possibilities-of-therapy
#15
S G Gavrilov, O O Turishcheva
The article is a literature review containing the data on various conservative methods of treatment for pelvic varicose veins. The authors present herein analysis of efficacy of using non-steroidal anti-inflammatory drugs, derivatives of ergot alkaloids, hormonal drugs, phleboprotectors, compression therapy in treatment of pelvic varicose veins, as well as indications for carrying out pharmacotherapy. Attention is drawn to the critically scarce number of studies dedicated to this issue, underlying the necessity of carrying out large multidisciplinary studies aimed at investigating the possibilities of non-surgical treatment of pelvic varicose veins...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/27598502/-ergotism-due-to-simultaneous-use-of-ergot-alkaloids-and-high-activity-antiretroviral-therapy
#16
Daniel Cifuentes M, Sergio Blanco L, Camila Ramírez F
High activity antiretroviral therapy may exacerbate the activity of ergot alkaloids due to an inhibition of cytochrome P450. We report a 57 years old female with AIDS treated with lamivudine, zidovudine, atazanavir, ritonavir and cotrimoxazole presenting with ischemic signs in the four limbs. There was acrocyanosis and weak radial and ulnar pulses. A family member referred that the patient used ergot alkaloids for headaches. An ergotism due to the simultaneous use of ergot alkaloids and antiretroviral therapy was suspected...
June 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27584949/simultaneous-determination-of-25-ergot-alkaloids-in-cereal-samples-by-ultraperformance-liquid-chromatography-tandem-mass-spectrometry
#17
Qiaozhen Guo, Bing Shao, Zhenxia Du, Jing Zhang
A liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) method was developed and validated for the simultaneous determination of 25 ergot alkaloids in cereal samples. The analytes included both -ine and -inine ergot alkaloids and were extracted using an acetonitrile and ammonium carbonate solution, followed by purification with C-18 sorbent. After full separation on a C18 column, the 25 ergot alkaloids were detected by LC-MS/MS using multiple reaction monitoring (MRM) in the positive ion mode...
September 21, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27582896/eletriptan-in-the-management-of-acute-migraine-an-update-on-the-evidence-for-efficacy-safety-and-consistent-response
#18
REVIEW
Matilde Capi, Martina Curto, Luana Lionetto, Fernando de Andrés, Giovanna Gentile, Andrea Negro, Paolo Martelletti
Migraine is a multifactorial, neurological and disabling disorder, also characterized by several autonomic symptoms. Triptans, selective serotonin 5-HT1B/1D agonists, are the first-line treatment option for moderate-to-severe headache attacks. In this paper, we review the recent data on eletriptan clinical efficacy, safety, and tolerability, and potential clinically relevant interactions with other drugs. Among triptans, eletriptan shows a consistent and significant clinical efficacy and a good tolerability profile in the treatment of migraine, especially for patients with cardiovascular risk factors without coronary artery disease...
September 2016: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/27571182/a-follow-up-study-of-the-prevalence-of-valvular-heart-abnormalities-in-hyperprolactinemic-patients-treated-with-cabergoline
#19
W M Drake, C E Stiles, J S Bevan, N Karavitaki, P J Trainer, D A Rees, T I Richardson, S E Baldeweg, N Stojanovic, R D Murray, A A Toogood, N M Martin, B Vaidya, T S Han, R P Steeds, F C Baldeweg, U E Sheikh, N Kyriakakis, S Parasuraman, L Taylor, N Butt, S Anyiam
: CONTEXT Uncertainty exists whether the long-term use of ergot-derived dopamine agonist (DA) drugs for the treatment of hyperprolactinemia may be associated with clinically significant valvular heart disease; and whether current regulatory authority guidelines for echocardiographic screening are clinically appropriate. OBJECTIVE: To provide follow-up echocardiographic data on a previously described cohort of patients treated with DA for lactotrope pituitary tumors; and to explore possible associations between structural and functional valve abnormalities with the cumulative dose of drug used...
August 29, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27562098/long-term-safety-and-effectiveness-of-pramipexole-in-tetrahydrobiopterin-deficiency
#20
Francesco Porta, Alberto Ponzone, Marco Spada
Tetrahydrobiopterin (BH4) deficiencies are inherited neuro-metabolic disorders leading to monoamine neurotransmitters deficiency. An individualized replacement therapy with neurotransmitters precursors is necessary to restore dopaminergic and serotoninergic homeostasis. The correction of dopaminergic tone is complicated, like in Parkinson disease, by l-dopa short half-life and adverse effects. To improve this picture, since 2009 we introduced the non-ergot dopamine agonist pramipexole as an adjunct to l-dopa therapy in the treatment of the most common causes of BH4 deficiency, 6-pyruvoyl tetrahydropterin synthase (PTPS) deficiency and dihydropteridine reductase (DHPR) deficiency...
December 0: European Journal of Paediatric Neurology: EJPN
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