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Drug induced parkinsonism

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https://www.readbyqxmd.com/read/29684590/a-synthetic-snake-venom-based-tripeptide-glu-val-trp-protects-pc12-cells-from-mpp-toxicity-by-activating-the-ngf-signaling-pathway
#1
Carolina P Bernardes, Neife A G Santos, Flavia M Sisti, Rafaela Scalco Ferreira, Norival A Santos-Filho, Adélia C O Cintra, Eduardo M Cilli, Suely V Sampaio, Antonio C Santos
Venom small peptides that target neurotrophin receptors might be beneficial in neurodegeneration, including Parkinsońs disease (PD). Their small size, ease of synthesis, structural stability and target selectivity make them important tools to overcome the limitations of endogenous neurotrophins as therapeutic agents. Additionally, they might be optimized to improve resistance to enzymatic degradation, bioavailability, potency and, mainly, lipophilicity, important to cross the blood brain barrier (BBB). Here, we evaluated the neuroprotective effects and mechanisms of the synthetic snake-venom-based peptide p-BTX-I (Glu-Val-Trp) in PC12 cells treated with MPP+ (1-methyl-4-phenylpyridinium), a dopaminergic neurotoxin that induces Parkinsonism in vivo...
April 20, 2018: Peptides
https://www.readbyqxmd.com/read/29681401/capacity-control-and-responsibility-in-parkinson-s-disease-patients-with-impulse-control-disorders-views-of-neurological-and-psychiatric-experts
#2
Andrew Dawson, Jordie Michael, Ella Dilkes-Frayne, Wayne Hall, Nadeeka N Dissanayaka, Adrian Carter
Dopamine replacement therapy can induce impulse control disorders (ICDs) (e.g., hypersexuality) in susceptible Parkinson's disease patients. ICDs can sometimes result in criminal offending. In a number of past Commonwealth cases, it appears offending ICD patients have been considered to be suffering from 'irresistible impulses' such that their decision-making capacity, behavioural control and responsibility were totally compromised. This contrasts with courts' general scepticism of drug-induced 'compulsion' in cases of addiction-related offending...
April 19, 2018: International Journal of Law and Psychiatry
https://www.readbyqxmd.com/read/29678288/internalization-of-g-protein-coupled-receptors-implication-in-receptor-function-physiology-and-diseases
#3
REVIEW
Davide Calebiro, Amod Godbole
G protein-coupled receptors (GPCRs) are the largest family of membrane receptors and mediate the effects of numerous hormones and neurotransmitters. The nearly 1000 GPCRs encoded by the human genome regulate virtually all physiological functions and are implicated in the pathogenesis of prevalent human diseases such as thyroid disorders, hypertension or Parkinson's disease. As a result, 30-50% of all currently prescribed drugs are targeting these receptors. Once activated, GPCRs induce signals at the cell surface...
April 2018: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29678162/tacrolimus-induced-parkinsonism-in-a-patient-after-liver-transplantation-case-report
#4
Karin Gmitterová, Michal Minár, Miroslav Žigrai, Zuzana Košutzká, Alice Kušnírová, Peter Valkovič
BACKGROUND: Hepatic encephalopathy may manifest by a wide spectrum of neuropsychiatric symptoms, including cognitive impairment, seizures or extrapyramidal symptoms. The liver transplant can lead to improvement of the signs of encephalopathy but subsequent immunosuppressive treatment might possess pronounced neurotoxicity. CASE PRESENTATION: We present a case report of a patient with chronic liver disease who developed signs of Parkinsonism after an orthotopic liver transplant, with consecutive immunosuppressant treatment with tacrolimus...
April 20, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29671021/protective-effect-of-vinpocetine-against-neurotoxicity-of-manganese-in-adult-male-rats
#5
Rania I Nadeem, Hebatalla I Ahmed, Bahia M El-Sayeh
Manganese (Mn) is required for many essential biological processes as well as in the development and functioning of the brain. Extensive accumulation of Mn in the brain may cause central nervous system dysfunction known as manganism, a motor disorder associated with cognitive and neuropsychiatric deficits similar to parkinsonism. Vinpocetine, a synthetic derivative of the alkaloid vincamine, is used to improve the cognitive function in cerebrovascular diseases. It possesses antioxidant and antiinflammatory properties...
April 18, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29665383/impact-of-aging-alzheimer-s-disease-and-parkinson-s-disease-on-the-blood-brain-barrier-transport-of-therapeutics
#6
Yijun Pan, Joseph A Nicolazzo
Older people are at greater risk of medicine-induced toxicities resulting from either increased drug sensitivity or age-related pharmacokinetic changes. The scenario is further complicated with the two most prevalent age-related neurodegenerative diseases, Alzheimer's disease (AD) and Parkinson's disease (PD). With aging, AD and PD, there is growing evidence of altered structure and function of the blood-brain barrier (BBB), including modifications to tight junctions and efflux transporters, such as P-glycoprotein...
April 14, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29661694/descriptive-epidemiology-of-parkinsonism-in-the-canton-of-geneva-switzerland
#7
Vanessa Fleury, Pauline Brindel, Nicolas Nicastro, Pierre R Burkhard
OBJECTIVES: A large descriptive cross-sectional population-based prevalence study as well as a retrospective incidence study were undertaken to ascertain the frequency of Parkinson's Disease (PD) and other types of degenerative and non-degenerative parkinsonism in the Canton of Geneva, Switzerland. METHODS: An extensive case-finding approach including records from public hospitals, private neurologists and nursing homes was utilized. All patients with a diagnosis of parkinsonism established between 2003 and 2012 were included...
April 9, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29649746/degradation-of-alpha-synuclein-by-dendritic-cell-factor-1-delays-neurodegeneration-and-extends-lifespan-in-drosophila
#8
Shiqing Zhang, Ruili Feng, Yanhui Li, Linhua Gan, Fangfang Zhou, Shiquan Meng, Qian Li, Tieqiao Wen
Parkinson's disease (PD) is a common neurodegenerative disease associated with the progressive loss of dopaminergic neurons in the substantia nigra. Proteinaceous depositions of alpha-synuclein (α-syn) and its mutations, A30P and A53T, are one important characteristic of PD. However, little is known about their aggregation and degradation mechanisms. Dendritic cell factor 1 (DCF1) is a membrane protein that plays important roles in nerve development in mouse. In this study, we aimed to show that DCF1 overexpression in a PD Drosophila model significantly ameliorates impaired locomotor behavior in third instar larvae and normalizes neuromuscular junction growth...
March 13, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29627381/restorative-effect-of-l-dopa-treatment-against-ochratoxin-a-induced-neurotoxicity
#9
Pratiksha V Bhat, T Anand, Manu T Mohan, Farhath Khanum
The toxic effects of Ochratoxin A (OTA), a fungal secondary metabolite of the genera Aspergillus and Penicillium with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) a Parkinson inducing drug were investigated to evaluate the neurotoxic effects exerted by OTA. OTA is known to contaminate food and feedstuff leading to a wide range of toxicity like nephrotoxicity, hepatotoxicity, and immunotoxicity. However, due to the dearth of available information on the possible mechanisms of OTA neurotoxicity and neurodegeneration the current study was undertaken...
April 5, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29626177/diabetes-mellitus-and-parkinson-disease
#10
Gennaro Pagano, Sotirios Polychronis, Heather Wilson, Beniamino Giordano, Nicola Ferrara, Flavia Niccolini, Marios Politis
OBJECTIVE: To investigate whether diabetes mellitus is associated with Parkinson-like pathology in people without Parkinson disease and to evaluate the effect of diabetes mellitus on markers of Parkinson pathology and clinical progression in drug-naive patients with early-stage Parkinson disease. METHODS: We compared 25 patients with Parkinson disease and diabetes mellitus to 25 without diabetes mellitus, and 14 patients with diabetes mellitus and no Parkinson disease to 14 healthy controls (people with no diabetes mellitus or Parkinson disease)...
April 6, 2018: Neurology
https://www.readbyqxmd.com/read/29621183/tau-induced-pathology-in-epilepsy-and-dementia-notions-from-patients-and-animal-models
#11
REVIEW
Marina P Sánchez, Ana M García-Cabrero, Gentzane Sánchez-Elexpuru, Daniel F Burgos, José M Serratosa
Patients with dementia present epilepsy more frequently than the general population. Seizures are more common in patients with Alzheimer's disease (AD), dementia with Lewy bodies (LBD), frontotemporal dementia (FTD) and progressive supranuclear palsy (PSP) than in other dementias. Missense mutations in the microtubule associated protein tau (MAPT) gene have been found to cause familial FTD and PSP, while the P301S mutation in MAPT has been associated with early-onset fast progressive dementia and the presence of seizures...
April 5, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29618426/anticataleptic-activity-of-zamzam-water-in-chlorpromazine-induced-animal-model-of-parkinson-disease
#12
Bushra Riaz, Rahila Ikram, Bushra Sikandar
Parkinsonism is characterized by rest tremor, inflexibility, balance debilitation, slow motion and dementia. It is known to be caused by the deficiency of dopaminergic neurons in nigrostriatal pathway. Different studies propose that oxidative burden may be included in the apoptotic process in parkisnons disease. Zamzam water being alkaline in composition may diminish the oxidative stress and hence relieve the symptoms. Therefore, the purpose of this study was to explore the neuroprotective effect of zamzam water in chlorpromazine induced animal model of Parkinsonism...
March 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29615861/lead-induced-atypical-parkinsonism-in-rats-behavioral-electrophysiological-and-neurochemical-evidence-for-a-role-of-noradrenaline-depletion
#13
Mariam Sabbar, Claire Delaville, Philippe De Deurwaerdère, Nouria Lakhdar-Ghazal, Abdelhamid Benazzouz
Background: Lead neurotoxicity is a major health problem known as a risk factor for neurodegenerative diseases, including the manifestation of parkinsonism-like disorder. While lead is known to preferentially accumulate in basal ganglia, the mechanisms underlying behavioral disorders remain unknown. Here, we investigated the neurophysiological and biochemical correlates of motor deficits induced by sub-chronic injections of lead. Methods: Sprague Dawely rats were exposed to sub-chronic injections of lead (10 mg/kg, i...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29605730/metabotropic-glutamate-receptors-targets-for-neuroprotective-therapies-in-parkinson-disease
#14
REVIEW
Gunasingh J Masilamoni, Yoland Smith
Metabotropic glutamate receptors (mGluRs) are heavily expressed throughout the basal ganglia (BG), where they modulate neuronal excitability, transmitter release and long term synaptic plasticity. Therefore, targeting specific mGluR subtypes by means of selective drugs could be a possible strategy for restoring normal synaptic function and neuronal activity of the BG in Parkinson disease (PD). Preclinical studies have revealed that specific mGluR subtypes mediate significant neuroprotective effects that reduce toxin-induced midbrain dopaminergic neuronal death in animal models of PD...
March 29, 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29605442/intranasal-administration-of-sodium-dimethyldithiocarbamate-induces-motor-deficits-and-dopaminergic-dysfunction-in-mice
#15
Josiel M Mack, Tainara M Moura, Débora Lanznaster, Franciane Bobinski, Caio M Massari, Tuane B Sampaio, Ariana E Schmitz, Luiz F Souza, Roger Walz, Carla I Tasca, Anicleto Poli, Richard L Doty, Alcir L Dafre, Rui D Prediger
The primary etiology of Parkinson's disease (PD) remains unclear, but likely reflects a combination of genetic and environmental factors. Exposure to some pesticides, including ziram (zinc dimethyldithiocarbamate), is a relevant risk factor for PD. Like some other environmental neurotoxicants, we hypothesized that ziram can enter the central nervous system from the nasal mucosa via the olfactory nerves. To address this issue, we evaluated the effects of 1, 2 or 4 days of intranasal (i.n., 1 mg/nostril/day) infusions of sodium dimethyldithiocarbamate (NaDMDC), a dimethyldithiocarbamate more soluble than ziram, on locomotor activity in the open field, neurological severity score and rotarod performance...
March 29, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29569570/behavioral-and-psychological-symptoms-in-lewy-body-disease-a-review
#16
Lucie Jurek, Mathieu Herrmann, Mathilde Bonze, Sophie Brunet, Catherine Padovan, Jean-Michel Dorey
Dementia with Lewy bodies (DLB) is a common neurodegenerative disease, second in terms of prevalence after Alzheimer's disease (AD). DLB may be suspected according to three core features which are cognitive and motor fluctuations, early visual hallucinations and parkinsonism; and more recently, according to the new criteria, REM sleep behavior disorder (RBD). Behavorial and psychological symptoms associated with DLB are more frequent, more severe and appear earlier than those found in other neurodegenerative diseases...
March 1, 2018: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/29561612/a-small-molecule-activator-of-unc-51-like-kinase-1-ulk1-that-induces-cytoprotective-autophagy-for-parkinson-s-disease-treatment
#17
Liang Ouyang, Lan Zhang, Shouyue Zhang, Dahong Yao, Yuqian Zhao, Guan Wang, Leilei Fu, Peng Lei, Bo Liu
UNC-51-like kinase 1 (ULK1), the yeast Atg1 ortholog, is the sole serine-threonine kinase and initiating enzyme in autophagy, which may be regarded as a target in Parkinson's disease (PD). Herein, we discovered a small molecule 33i (BL-918) as a potent activator of ULK1 by structure-based drug design. Subsequently, some key amino acid residues (Arg18, Lys50, Asn86 and Tyr89) were found to be crucial to the binding pocket between ULK1 and 33i by site-directed mutagenesis. Moreover, we found that 33i induced autophagy via the ULK complex in SH-SY5Y cells...
March 21, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29558946/the-antioxidant-and-neurochemical-activity-of-apium-graveolens-l-and-its-ameliorative-effect-on-mptp-induced-parkinson-like-symptoms-in-mice
#18
Pennapa Chonpathompikunlert, Phetcharat Boonruamkaew, Wanida Sukketsiri, Pilaiwanwadee Hutamekalin, Morakot Sroyraya
BACKGROUND: Apium graveolens L. is a traditional Chinese medicine prescribed as a treatment for hypertension, gout, and diabetes. This study aimed to determine the neuroprotective effects of A. graveolens extract against a Parkinson's disease (PD) model induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in C57BL/6 mice. METHODS: Male C57BL/6 mice treated with MPTP were orally dosed with A. graveolens extract daily for 21 days. Behavioral tests, including a rotarod apparatus, a narrow beam test, a drag test, a grid walk test, a swimming test, and a resting tremor evaluation, were performed...
March 20, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29552616/methylation-profile-of-induced-pluripotent-stem-cells-generated-by-integration-and-integration-free-approaches
#19
Rinat Sultanov, Olga Lebedeva, Georgij Arapidi, Maria Lagarkova, Sergei Kiselev
The genetic reprogramming technology allows generation of induced pluripotent stem cells (iPSCs) from somatic cells (Takahashi and Yamanaka, 2006) [1]. iPSCs have the ability to self-renew, and to differentiate into any type of somatic cells, and are considered as a promising tool for drug development, disease modeling, and regenerative medicine. The reprogramming factors (oct4, sox2, klf4, c-myc) can be delivered to the cell nucleus either by vectors integrating into the genome (lentiviruses, retroviruses) or by non-integrative methods (e...
April 2018: Data in Brief
https://www.readbyqxmd.com/read/29533362/antipsychotic-induced-pisa-syndrome-a-2-year-follow-up-study
#20
Yen-Feng Lee
OBJECTIVES: Pisa syndrome is characterized by lateral trunk flexion. It is an uncommon adverse drug reaction in patients on antipsychotic medication. Although Pisa syndrome has been reported in patients on antipsychotic treatment, previous studies have not discussed the prognosis of patients with Pisa syndrome. We studied psychiatric patients with Pisa syndrome following antipsychotic treatment for a 2-year period. METHODS: From January 2012 to December 2014, 13 inpatients with Pisa syndrome following antipsychotic treatment were identified at our institution, from a prospectively collected database...
March 2018: Clinical Neuropharmacology
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