Abstract:
:Levodopa (LD) is one of the most effective drugs for clinical symptoms in patients with Parkinson disease (PD). Most PD patients are advanced in age and may have trouble with LD absorption because aging influences drug absorption processes. Previous reports have indicated that ascorbic acid (AsA) can reduce LD dosage without losing its effectiveness. The current study sought to determine whether AsA affects LD absorption in elderly PD patients. Sixty-seven elderly PD patients took a tablet orally containing 100 mg LD and 10 mg carbidopa following an overnight fast. Plasma LD concentrations were determined at 6 points up to 3 hours, using high-performance liquid chromatography with electrochemical detection. The area under the curve (AUC), peak drug concentration (Cmax), and time to peak drug concentration (Tmax) were calculated. The pharmacokinetic evaluation was repeatedly performed 1 week later in the same way except for adding 200 mg AsA to the tablet. The changes in AUC, Cmax, and Tmax between the tests were evaluated. Significant changes in these parameters were not observed when analyzed using data from all patients. However, significant increases in AUC and Cmax, and a significant reduction in Tmax by adding AsA were observed in 25 patients with baseline AUC < or =2500 ng.hour/mL. In conclusion, AsA can improve LD absorption in elderly PD patients with poor LD bioavailability. LD therapy in combination with AsA may be one of the strategies for PD treatment.
journal_name
Clin Neuropharmacoljournal_title
Clinical neuropharmacologyauthors
Nagayama H,Hamamoto M,Ueda M,Nito C,Yamaguchi H,Katayama Ydoi
10.1097/01.wnf.0000150865.21759.bckeywords:
subject
Has Abstractpub_date
2004-11-01 00:00:00pages
270-3issue
6eissn
0362-5664issn
1537-162Xpii
00002826-200411000-00003journal_volume
27pub_type
临床试验,杂志文章abstract::Cyclosporine A (CsA) neurotoxicity is an iatrogenic disease with significant morbidity and occasional mortality. We retrospectively reviewed the cases of CsA neurotoxicity among bone marrow transplant recipients at our institution, and summarized the current literature on the subject. The neurologic presentation is va...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:10.1097/00002826-199903000-00001
更新日期:1999-03-01 00:00:00
abstract:OBJECTIVE:Although hormone replacement therapy (HRT) improves menopausal depressive symptoms, women unresponsive to HRT need an antidepressant drug as an effective adjunctive therapy. The aim of this study was to assess whether the herbal medicine Unkei-to has an impact on HRT-resistant menopausal depressive symptoms a...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.wnf.0000138634.34498.05
更新日期:2004-07-01 00:00:00
abstract::A correlation was found among the degree of memory loss, intellectual impairment, the quantity of senile plaques, and a decrease in choline acetyltransferase and acetylcholinesterase activity in patients affected by senile dementia of the Alzheimer type. In this study, patients were subjected to a series of computeriz...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00002826-198312000-00005
更新日期:1983-01-01 00:00:00
abstract::Apomorphine, the first dopamine agonist to be synthesized, has received a renewed interest in the last few years. This compound acts powerfully on D1 and D2 dopamine receptors and has the most complete pharmacological profile of all clinically available dopamine agonists. When given subcutaneously, apomorphine consist...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:10.1097/00002826-199406000-00004
更新日期:1994-06-01 00:00:00
abstract:OBJECTIVE:Use of antipsychotic agents in the management of various psychopathologies in Child and Adolescent Psychiatric practice is gradually increasing. This study aimed to evaluate the sociodemographic and clinical features of children and adolescents who applied to an outpatient clinic of child and adolescent psych...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000263
更新日期:2018-01-01 00:00:00
abstract:OBJECTIVE:Psychogenic polydipsia occurs frequently in patients with chronic psychiatric illness and is often unmanageable. We herein report 5 patients in whom acetazolamide was trialed for this symptom. METHODS:We encountered a case in which polydipsia improved with incidental administration of acetazolamide. We then ...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0b013e318205070b
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVES:Treatment-resistant depression is a common occurrence in clinical practice as well as combination treatment with 2 different antidepressants. In the present case series, we study the effectiveness of the addition of reboxetine, during 12 weeks, to 14 outpatients diagnosed with major depressive disorder, acco...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/01.WNF.0000228211.19818.14
更新日期:2006-07-01 00:00:00
abstract::Recent reports suggest some utility for famotidine, a histamine type 2 (H2) antagonist, in the treatment of schizophrenia. The current report describes a treatment-resistant patient with chronic undifferentiated schizophrenia whose most dramatic symptomatic improvements were temporarily related to the open-label addit...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/00002826-199508000-00009
更新日期:1995-08-01 00:00:00
abstract::Over the last several years, the therapeutic approach to bacterial meningitis has been changing. The neurological complications of bacterial meningitis result from an inflammatory process that is initiated by the lysis of bacteria in the subarachnoid space by antibiotics; to alter the pathophysiologic events initiated...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:10.1097/00002826-199310000-00001
更新日期:1993-10-01 00:00:00
abstract::Daily 20-mg doses of Copolymer 1 have been shown to significantly decrease the relapse rate in patients with multiple sclerosis (MS). In the present open-label study, patients with relapsing MS were treated with the same dose of Copolymer 1 administered on alternate days. Sixty-eight patients were recruited: fifty-one...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/00002826-200201000-00002
更新日期:2002-01-01 00:00:00
abstract:OBJECTIVES:Perampanel is a recently introduced antiepileptic drug (AED) with a unique action mechanism of noncompetitive and selective α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid antagonist. Because of delayed approval of perampanel in most Asian countries, there is limited information on the clinical usefulne...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000255
更新日期:2018-01-01 00:00:00
abstract::Antiepileptic drugs (AEDs) suppress seizures by selectively modifying the excitability of neurons and blocking seizure firing with minimal disturbance of nonepileptic activity. All AEDs have been shown to work by at least one of 3 main mechanisms of action: through modulation of voltage-gated ion channels, enhancement...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:10.1097/wnf.0b013e3180413d7d
更新日期:2007-07-01 00:00:00
abstract::A group of four monkeys was rendered parkinsonian with the toxin MPTP. They were then treated chronically with L-DOPA/benserazide 50/12.5 mg/kg given orally daily for 2 months. This dose produced a striking antiparkinsonian effect, but all animals manifested dyskinesia. A series of agents acting primarily on neurotran...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/00002826-199310000-00004
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVE:As the fiberoptic gastroscopy using midazolam is being in widespread use, the exact nature of midazolam on memory should be clarified. We intended to examine whether midazolam causes selective anterograde amnesia and what impact it has on other aspects of memory and general cognitive function. METHODS:We rec...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000067
更新日期:2015-03-01 00:00:00
abstract::In a double-blind, 4 week study, 42 chronic schizophrenic inpatients receiving antipsychotic and antiparkinsonian (AP) drugs for greater than 3 months were either switched to placebo or maintained on biperiden. In the majority of the patients no clinically apparent discomfort was observed, and only two of 21 placebo p...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章
doi:10.1097/00002826-198708000-00008
更新日期:1987-08-01 00:00:00
abstract::Infantile spasms are the main feature in West syndrome, an age-related epilepsy syndrome that affects 1 in every 2,000-4,000 infants. The authors provide a comprehensive review of the literature about infantile spasms and their therapy. In the United States, the drug of choice for infantile spasms, at least the crypto...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:10.1097/00002826-200203000-00001
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abstract::The anticonvulsant potential of lamotrigine (LTG) has been extensively assessed in open and double-blind clinical trials including patients with different types of epilepsy. In this review, the neurophysiologic and neuropsychologic profile of LTG is discussed. The electroencephalographic (EEG) findings reveal that the...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章,评审
doi:
更新日期:1999-05-01 00:00:00
abstract::Dehydroepiandrosterone (DHEA) is an important neurosteroid and has demonstrated efficacy in the improvement of mood and energy. The authors previously reported the efficacy of DHEA augmentation in the management of negative, depressive, and anxiety symptoms of schizophrenia. To characterize further the effects of DHEA...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.wnf.0000188716.25211.58
更新日期:2005-11-01 00:00:00
abstract:OBJECTIVES:To assess quantitatively the influence of rotigotine transdermal patch on daytime sleepiness, the most common adverse event by non-ergot dopamine agonists (DAs), in Parkinson disease (PD) patients. METHODS:An open-label study enrolled PD patients with unsatisfactory control of motor symptoms. Treatment with...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000110
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study is to investigate the safety and efficacy of aripiprazole in first-episode drug-naive patients with schizophrenia. METHODS:A total of 45 patients were enrolled in an open-label 12-week study. Dosing was determined by clinical judgment. The main efficacy measure was the Brief Psychia...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0b013e31817c6b06
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abstract:BACKGROUND:The cerebellum has traditionally been regarded as an organ of motor coordination. However, the importance of the cerebellum in psychiatric disorders, behavior, and cognition is increasingly being recognized. There is no consensus concerning treatment of schizophrenia-like psychosis after cerebellar pathology...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0b013e31821f4d91
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVES:Obsessive-compulsive disorder (OCD) is notably a comorbid disorder in patients with schizophrenia. This study aimed to evaluate clinical features and correlates of early onset patients with schizophrenia with OCD. METHODS:In the present study, we included 10 patients with both schizophrenia and OCD and 19 p...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000248
更新日期:2017-11-01 00:00:00
abstract::A 21-year-old patient developed rhabdomyolysis during his nineteenth week of treatment with clozapine for drug-resistant schizophrenia. No risk factors for rhabdomyolysis were found, but the calcium-dependent potassium efflux, normally responsible for membrane hyperpolarization and muscle refractoriness, was severely ...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:
更新日期:1998-07-01 00:00:00
abstract::In nine patients with orthostatic hypotension due to multiple system atrophy, the effects of octreotide (100 micrograms s.c.), a somatostatin analogue, on blood pressure (BP), heart rate (HR), and norepinephrine (NE) plasma levels after 60 degrees head up tilt test were evaluated by a randomly controlled study. Octreo...
journal_title:Clinical neuropharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00002826-199502000-00012
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND:Topiramate (TPM) is a fructose derivative, which was originally developed as an antiepileptic. In this context, movement disorders (MDs) are possible adverse events secondary to TPM. CASE REPORTS:Two patients (cases 1 and 2) developed myoclonus, and the other 2 had restless leg syndrome (RLS, cases 3 and 4)...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/WNF.0000000000000395
更新日期:2020-07-01 00:00:00
abstract::Chronic treatment of rats with dexfenfluramine decreased the concentrations of circulating corticosterone, fatty acid, glycerol, and triacylglycerol after feeding a test load of fructose. It also decreased the rise in adrenalin in the blood of rats that were anaesthetized with urethane. These effects of dexfenfluramin...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract::Intravenous injection of low doses of naloxone was found to reverse the respiratory depression induced by apomorphine in chloralose-anesthesized dogs. Similar results were obtained with haloperidol, whereas yohimbine remained ineffective. These data suggest that apomorphine depresses respiratory rate through a mechani...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/00002826-199210000-00009
更新日期:1992-10-01 00:00:00
abstract::Venlafaxine (VEN) pharmacokinetics and effects on the brain monoamine output were investigated in the context of experimental hepatic encephalopathy (HE). Systemic VEN (10 mg/kg; subcutaneous) was administered to chronic portacaval shunted (PCS) and sham-operated rats. Their neocortical extracellular levels of 5-HT, 5...
journal_title:Clinical neuropharmacology
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doi:
更新日期:1998-09-01 00:00:00
abstract::To investigate clinical aspects of the neutropenia induced by high-dose intravenous immunoglobulin therapy (IVIG) we performed serial hematology, including differentiation of white blood cells (WBC), before and after 22 instances of IVIG in 16 patients with neuroimmunologic disorders. WBC and neutrophils showed a sign...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
doi:10.1097/00002826-200311000-00009
更新日期:2003-11-01 00:00:00
abstract:OBJECTIVE:Multiple sclerosis (MS) is a degenerative neurological condition that results in impairments in multiple domains including cognition, fatigue, and mood. Dalfampridine-extended release (D-ER) has been approved to improve walking in persons with MS. It is plausible that D-ER could improve cognition, fatigue, an...
journal_title:Clinical neuropharmacology
pub_type: 杂志文章
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更新日期:2016-03-01 00:00:00