Download or read book An Essay on the Shaking Palsy written by James Parkinson and published by . This book was released on 1817 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Levodopa pharmacokinetics from stomach to brain written by Maria Nord and published by Linköping University Electronic Press. This book was released on 2019-01-07 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parkinson’s disease (PD) is one of the most common neurodegenerative disorders and it is caused by a loss of dopamine (DA) producing neurons in the basal ganglia in the brain. The PD patient suffers from motor symptoms such as tremor, bradykinesia and rigidity and treatment with levodopa (LD), the precursor of DA, has positive effects on these symptoms. Several factors affect the availability of orally given LD. Gastric emptying (GE) is one factor and it has been shown to be delayed in PD patients resulting in impaired levodopa uptake. Different enzymes metabolize LD on its way from the gut to the brain resulting in less LD available in the brain and more side effects from the metabolites. By adding dopa decarboxylase inhibitors (carbidopa or benserazide) or COMT-inhibitors (e.g. entacapone) the bioavailability of LD increases significantly and more LD can pass the blood-brain-barrier and be converted to DA in the brain. It has been considered of importance to avoid high levodopa peaks in the brain because this seems to induce changes in postsynaptic dopaminergic neurons causing disabling motor complications in PD patients. More continuously given LD, e.g. duodenal or intravenous (IV) infusions, has been shown to improve these motor complications. Deep brain stimulation of the subthalamic nucleus (STN DBS) has also been proven to improve motor complications and to make it possible to reduce the LD dosage in PD patients. In this doctoral thesis the main purpose is to study the pharmacokinetics of LD in patients with PD and motor complications; in blood and subcutaneous tissue and study the effect of GE and PD stage on LD uptake and the effect of continuously given LD (CDS) on LD uptake and GE; in blood and cerebrospinal fluid (CSF) when adding the peripheral enzyme inhibitors entacapone and carbidopa to LD infusion IV; in brain during STN DBSand during oral or IV LD treatment. To conclude, LD uptake is more favorable in PD patients with less severe disease and GE is delayed in PD patients. No obvious relation between LD uptake and GE or between GE and PD stage is seen and CDS decreases the LD levels. Entacapone increases the maximal concentration of LD in blood and CSF. This is more evident with additional carbidopa and important to consider in avoiding high LD peaks in brain during PD treatment. LD in brain increases during both oral and IV LD treatment and the DA levels follows LD well indicating that PD patients still have capacity to metabolize LD to DA despite probable pronounced nigral degeneration. STN DBS seems to increase putaminal DA levels and together with IV LD treatment also increases LD in brain possibly explaining why it is possible to decrease LD medication after STN DBS surgery. Parkinsons sjukdom (PS) är en av de vanligaste s.k. neurodegenerativasjukdomarna och orsakas av förlust av dopamin(DA)producerande nervceller i hjärnan. Detta orsakar motoriska symptom såsom skakningar, stelhet och förlångsammade rörelser. Levodopa (LD) är ett ämne, som kan omvandlas till DA i hjärnan och ge symptomlindring och det är oftast förstahandsval vid behandling av patienter med PS. Flera faktorer påverkar tillgängligheten av LD, bl.a. den hastighet som magsäcken tömmer sig med och denna verkar förlångsammad hos personer med PS vilket ger sämre tillgänglighet av LD i blodet och därmed i hjärnan. LD bryts även ner i hög grad av olika enzym ute i kroppen vilket leder till mindre mängd LD som hamnar i hjärnan och till fler nedbrytningsprodukter som orsakar biverkningar. Tillägg av enzymhämmare leder till ökad mängd LD som kan nå hjärnan och omvandlas till DA. Det anses viktigt att undvika höga toppar av LD i hjärnan då dessa verkar bidra till utvecklandet av besvärliga motoriska komplikationer hos patienter med PS. Om LD ges mer kontinuerligt, exempelvis som en kontinuerlig infusion in i tarmen eller i blodet, så minskar dessa motoriska komplikationer. Inopererande av stimulatorer i vissa delar av hjärnan (DBS) har också visat sig minska dessa motoriska komplikationer och även resultera i att man kan minska LD-dosen. Huvudsyftet med den här avhandlingen är att studera LD hos patienter med PS; i blod och fettvävnad då LD ges i tablettform och se om det finns något samband med LD-upptag och hastigheten på magsäckstömningen (MT) och om kontinuerligt given LD påverkar LD-upptaget eller MT; i blod och i ryggmärgsvätska då enzymhämmarna entakapon och karbidopa tillsätts LD; i hjärna vid behandling med DBS och då LD ges både som tablett och som infusion i blodet. Sammanfattningsvis kan vi se att LD-upptaget är mer gynnsamt hos patienter med PS i tidigare skede av sjukdomens komplikationsfas. MT är förlångsammad hos patienter med PS och det är inget tydligt samband mellan LD-upptag och MT eller mellan MT och sjukdomsgrad. Kontinuerligt given LD minskar LDnivåerna. Enzymhämmaren entakapon ökar den maximala koncentrationen av LD i blod och ryggmärgsvätska och effekten är mer tydlig vid tillägg av karbidopa vilket är viktigt att ta i beaktande vid behandling av PS för att undvika höga toppar av LD i hjärnan. LD ökar i hjärnan då man behandlar med LD i tablettform och som infusion i blodet och DA-nivåerna i hjärnan följer LD väl vilket visar på att patienter med PS fortfarande kan omvandla LD till DA trots trolig uttalad brist av de DA-producerande nervcellerna i hjärnan. DBS verkar öka DA i vissa områden i hjärnan och tillsammans med LD-infusion i blodet verkar det även öka LD i hjärnan och det kan förklara varför man kan sänka LDdosen efter DBS-operation.

Download or read book Hepatotoxicity written by Hyman J. Zimmerman and published by Lippincott Williams & Wilkins. This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the foremost authority in the field, this volume is a comprehensive review of the multifaceted phenomenon of hepatotoxicity. Dr. Zimmerman examines the interface between chemicals and the liver; the latest research in experimental hepatotoxicology; the hepatotoxic risks of household, industrial, and environmental chemicals; and the adverse effects of drugs on the liver. This thoroughly revised, updated Second Edition features a greatly expanded section on the wide variety of drugs that can cause liver injury. For quick reference, an appendix lists these medications and their associated hepatic injuries. Also included are in-depth discussions of drug metabolism and factors affecting susceptibility to liver injury.

Download or read book Awakenings written by Oliver Sacks and published by Vintage. This book was released on 2013-05-29 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classic account of survivors of the sleeping-sickness during the great epidemic just after World War I—and their return to the world after decades of “sleep.” • “One of the most beautifully composed and moving works of our time" (The Washington Post) from the distinguished neurologist and the national bestselling author of The Man Who Mistook His Wife for a Hat. Awakenings—which inspired the major motion picture starring Robert DeNiro and Robin Williams—is the remarkable story of a group of patients who contracted sleeping-sickness during the great epidemic just after World War I. Frozen for decades in a trance-like state, these men and women were given up as hopeless until 1969, when Dr. Oliver Sacks gave them the then-new drug L-DOPA, which had an astonishing, explosive, "awakening" effect. Dr. Sacks recounts the moving case histories of his patients, their lives, and the extraordinary transformations which went with their reintroduction to a changed world.

Download or read book Parkinson s Disease written by National Collaborating Centre for Chronic Conditions (Great Britain) and published by Royal College of Physicians. This book was released on 2006 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book L Dopa and Parkinsonism written by André Barbeau and published by Philadelphia : F. A. Davis Company. This book was released on 1970 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The New Parkinson s Disease Treatment Book written by J. Eric Ahlskog, PhD, MD and published by Oxford University Press. This book was released on 2015-08-03 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fundamental guide to the most effective treatments for Parkinson's Disease, from a Mayo Clinic doctor with thirty years of clinical and research experience. In this second edition follow-up to the extremely successful first edition, Dr. Ahlskog draws on thirty years of clinical experience to present the definitive guide to dealing with all aspects of Parkinson's Disease, from treatment options and side effects to the impact of the disease on caregivers and family. Dr. Ahlskog's goal is to educate patients so that they can better team up with their doctors to do battle with the disease, streamlining the decision-making process and enhancing their treatment. To do this, Dr. Ahlskog offers a gold mine of information, distilled from his years of experience treating people with Parkinson's at the Mayo Clinic. In addition to providing a comprehensive account of Parkinson's medications, this book also examines additional aspects of treatment, such as the role of nutrition, exercise, and physical therapy. Although many commendable texts have been written on the subject of Parkinson's Disease, their discussions of treatment have not been in depth. Dr. Ahlskog sifts through aspects of the disease in order to give the reader a comprehensive sense of Parkinson's and the best available treatment options. With a broader understanding of the disease and the available options, patients are able to make more informed choices, and doctors are able to provide more tailored care. This book delivers hopeful, helpful, and extensive information to all parties concerned: patients, caregivers, and doctors. The ultimate guide to symptoms and treatment, this thoroughly updated second edition is the first place patients should turn for reliable, easy-to-grasp information on Parkinson's Disease.

Download or read book Oxidative Stress and Neurodegenerative Disorders written by G. Ali Qureshi and published by Elsevier. This book was released on 2007-03-22 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidative stress is the result of an imbalance in pro-oxidant/antioxidant homeostasis that leads to the generation of toxic reactive oxygen species. Brain cells are continuously exposed to reactive oxygen species generated by oxidative metabolism, and in certain pathological conditions defense mechanisms against oxygen radicals may be weakened and/or overwhelmed. DNA is a potential target for oxidative damage, and genomic damage can contribute to neuropathogenesis. It is important therefore to identify tools for the quantitative analysis of DNA damage in models on neurological disorders. This book presents detailed information on various neurodegenerative disorders and their connection with oxidative stress. This information will provide clinicians with directions to treat these disorders with appropriate therapy and is also of vital importance for the drug industries for the design of new drugs for treatment of degenerative disorders.* Contains the latest information on the subject of neurodegenerative disorders* Reflects on various factors involved in degeneration and gives suggestions for how to tackle these problems

Download or read book The Treatment of Parkinsonism with L Dopa written by John Marks and published by Elsevier Publishing Company. This book was released on 1974 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diagnosis and Treatment of Parkinson s Disease written by Cindy Levine and published by Department of Health and Human Services Pu Ncy for Healthcare Res. This book was released on 2003-01-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Etiology of Parkinson s Disease written by Jonas H. Ellenberg and published by CRC Press. This book was released on 1995-03-01 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference provides a detailed overview of current concepts regarding the cause of Parkinson's disease-emphasizing the issues involved in the design, implementation, and analysis of epidemiological studies of parkinsonism.

Download or read book Mucuna versus Parkinson treatment with natural levodopa written by Rafael González Maldonado and published by Rafael González Maldonado. This book was released on 2014-08-19 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Mucuna pruriens” is a bean that grows in the tropics. It is very rich in natural levodopa that is better tolerated and more potent than the synthetic levodopa in Sinemet or Stalevo. Two prestigious neurologists have patented extracts of mucuna seeds as a treatment for Parkinson's. Meanwhile, patients have recorded their positive experiences with mucuna; they buy it online (no prescription needed) and use it in secrecy without consulting their neurologist. Neither the patients nor the doctors (most of them) have clear ideas about this plant, its ingredients (not only levodopa), the proportions in which it is absorbed, or how to manage it. "Mucuna versus Parkinson: Natural Levodopa Treatment" is so far the most complete and up-to-date monograph on the subject, it describes the theoretical and practical approaches to the use of this plant as a treatment option for Parkinson's disease. Also included are more than one hundred of references.

Download or read book L Dopa and Parkinsonism written by Manuel Riklan and published by Charles C. Thomas Publisher. This book was released on 1973 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parkinson s Disease and Related Disorders written by Peter Riederer and published by Springer Science & Business Media. This book was released on 2006-11-23 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive overview on current clinical and basic research issues related to Parkinson’s disease and its related disorders. The book is the result of the 16th International Congress of Parkinson’s Disease and Related disorders congress 2005. Its contents are suitable for neurologists, psychiatrists, neurosurgeons, basic researchers, geneticians and patients as well as their relatives.

Download or read book Parkinson s Disease Current and Future Therapeutics and Clinical Trials written by Néstor Gálvez-Jiménez and published by Cambridge University Press. This book was released on 2016-03-24 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book emphasizes treatment options for Parkinson's disease, providing the necessary clinical and scientific basis for the foundations of solid therapeutics.

Download or read book Non Motor Symptoms of Parkinson s Disease written by K. Ray Chaudhuri and published by Oxford University Press, USA. This book was released on 2014 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Patients with Parkinson's disease (PD) are known to suffer from motor symptoms of the disease, but they also experience non-motor symptoms (NMS) that are often present before diagnosis or that inevitably emerge with disease progression. The motor symptoms of Parkinson's disease have been extensively researched, and effective clinical tools for their assessment and treatment have been developed and are readily available. In contrast, researchers have only recently begun to focus on the NMS of Parkinson's Disease, which are poorly recognized and inadequately treated by clinicians. The NMS of PD have a significant impact on patient quality of life and mortality and include neuropsychiatric, sleep-related, autonomic, gastrointestinal, and sensory symptoms. While some NMS can be improved with currently available treatments, others may be more refractory and will require research into novel (non-dopaminergic) drug therapies for the future. Edited by members of the UK Parkinson's Disease Non-Motor Group (PD-NMG) and with contributions from international experts, this new edition summarizes the current understanding of NMS symptoms in Parkinson's disease and points the way towards future research.

Download or read book Imaging Acute Neurologic Disease written by Massimo Filippi and published by Cambridge University Press. This book was released on 2014-09-11 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive survey of best practice in using diagnostic imaging in acute neurologic conditions. The symptom-based approach guides the choice of the available imaging tools for efficient, accurate, and cost-effective diagnosis. Effective examination algorithms integrate neurological and imaging concepts with the practical demands and constraints of emergency care.