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parkinson's prevention

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https://www.readbyqxmd.com/read/28221817/neuroprotective-effect-of-omega-3-polyunsaturated-fatty-acids-in-the-6-ohda-model-of-parkinson-s-disease-is-mediated-by-a-reduction-of-inducible-nitric-oxide-synthase
#1
Marco Aurélio Mori, Ana Marcia Delattre, Bruno Carabelli, Claudia Pudell, Mariza Bortolanza, Pedro Vinícius Staziaki, Jesuí Vergilio Visentainer, Paula Fernandes Montanher, Elaine A Del Bel, Anete Curte Ferraz
OBJECTIVE: Parkinson's disease (PD) is characterized by deterioration of the nigrostriatal system and associated with chronic neuroinflammation. Glial activation has been associated with regulating the survival of dopaminergic neurons and is thought to contribute to PD through the release of proinflammatory and neurotoxic factors, such as reactive nitric oxide (NO) that triggers or exacerbates neurodegeneration in PD. Polyunsaturated fatty acids (PUFAs) exert protective effects, including antiinflammatory, antiapoptotic, and antioxidant activity, and may be promising for delaying or preventing PD by attenuating neuroinflammation and preserving dopaminergic neurons...
February 21, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28220836/nucleobindin-1-binds-to-multiple-types-of-pre-fibrillar-amyloid-and-inhibits-fibrillization
#2
Alessandra Bonito-Oliva, Shahar Barbash, Thomas P Sakmar, W Vallen Graham
During amyloid fibril formation, amyloidogenic polypeptides misfold and self assemble into soluble pre-fibrillar aggregates, i.e., protofibrils, which elongate and mature into insoluble fibrillar aggregates. An emerging class of chaperones, chaperone-like amyloid binding proteins (CLABPs), has been shown to interfere with aggregation of particular misfolded amyloid peptides or proteins. We have discovered that the calcium-binding protein nuclebindin-1 (NUCB1) is a novel CLABP. We show that NUCB1 inhibits aggregation of islet-amyloid polypeptide associated with type 2 diabetes mellitus, a-synuclein associated with Parkinson's disease, transthyretin V30M mutant associated with familial amyloid polyneuropathy, and Aβ42 associated with Alzheimer's disease by stabilizing their respective protofibril intermediates...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28219641/neural-stem-cell-therapy-for-neurodegenerative-disorders-the-role-of-neurotrophic-support
#3
Samuel E Marsh, Mathew Blurton-Jones
Neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, and Huntington's disease currently affect tens of millions of people worldwide. Unfortunately, as the world's population ages, the incidence of many of these diseases will continue to rise and is expected to more than double by 2050. Despite significant research and a growing understanding of disease pathogenesis, only a handful of therapies are currently available and all of them provide only transient benefits. Thus, there is an urgent need to develop novel disease-modifying therapies to prevent the development or slow the progression of these debilitating disorders...
February 17, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28205624/the-small-molecule-auten-99-autophagy-enhancer-99-prevents-the-progression-of-neurodegenerative-symptoms
#4
Tibor Kovács, Viktor Billes, Marcell Komlós, Bernadette Hotzi, Anna Manzéger, Anna Tarnóci, Diána Papp, Fanni Szikszai, Janka Szinyákovics, Ákos Rácz, Béla Noszál, Szilvia Veszelka, Fruzsina R Walter, Mária A Deli, Laszlo Hackler, Robert Alfoldi, Orsolya Huzian, Laszlo G Puskas, Hanna Liliom, Krisztián Tárnok, Katalin Schlett, Adrienn Borsy, Ervin Welker, Attila L Kovács, Zsolt Pádár, Attila Erdős, Adam Legradi, Annamaria Bjelik, Károly Gulya, Balázs Gulyás, Tibor Vellai
Autophagy functions as a main route for the degradation of superfluous and damaged constituents of the cytoplasm. Defects in autophagy are implicated in the development of various age-dependent degenerative disorders such as cancer, neurodegeneration and tissue atrophy, and in accelerated aging. To promote basal levels of the process in pathological settings, we previously screened a small molecule library for novel autophagy-enhancing factors that inhibit the myotubularin-related phosphatase MTMR14/Jumpy, a negative regulator of autophagic membrane formation...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204825/morroniside-protects-sk-n-sh-human-neuroblastoma-cells-against-h2o2-induced-damage
#5
Jing-Xing Zhang, Rui Wang, Jin Xi, Lin Shen, An-You Zhu, Qi Qi, Qi-Yi Wang, Lun-Jun Zhang, Feng-Chao Wang, He-Zuo Lü, Jian-Guo Hu
Oxidative stress-induced cell injury has been linked to the pathogenesis of neurodegenerative disorders such as spinal cord injury, Parkinson's disease, and multiple sclerosis. Morroniside is an antioxidant derived from the Chinese herb Shan-Zhu-Yu. The present study investigated the neuroprotective effect of morroniside against hydrogen peroxide (H2O2)-induced cell death in SK-N-SH human neuroblastoma cells. H2O2 increased cell apoptosis, as determined by flow cytometry and Hoechst 33342 staining. This effect was reversed by pretreatment with morroniside at concentrations of 1-100 µM...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28203477/imaging-and-quantitative-analysis-of-the-interstitial-space-in-the-caudate-nucleus-in-a-rotenone-induced-rat-model-of-parkinson-s-disease-using-tracer-based-mri
#6
Deyong Lv, Jingbo Li, Hongfu Li, Yu Fu, Wei Wang
Parkinson's disease (PD) is characterized by pathological changes within several deep structures of the brain, including the substantia nigra and caudate nucleus. However, changes in interstitial fluid (ISF) flow and the microstructure of the interstitial space (ISS) in the caudate nucleus in PD have not been reported. In this study, we used tracer-based magnetic resonance imaging (MRI) to quantitatively investigate the alterations in ISS and visualize ISF flow in the caudate nucleus in a rotenone-induced rat model of PD treated with and without madopar...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28199883/acetyl-l-carnitine-protects-dopaminergic-nigrostriatal-pathway-in-6-hydroxydopamine-induced-model-of-parkinson-s-disease-in-the-rat
#7
Siamak Afshin-Majd, Keyhan Bashiri, Zahra Kiasalari, Tourandokht Baluchnejadmojarad, Reza Sedaghat, Mehrdad Roghani
Parkinson's disease (PD) is a movement disorder and the second most common neurodegenerative disease worldwide in which nigrostriatal dopaminergic neurons within substantia nigra pars compacta (SNC) are lost, with clinical motor and non-motor symptoms including bradykinesia, resting tremor, rigidity, stooping posture and cognitive deficits. This study was undertaken to evaluate the neuroprotective potential of acetyl-l-carnitine (ALC) against unilateral striatal 6-hydroxydopamine (6-OHDA)-induced model of PD and to explore some involved mechanisms...
February 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28193696/astrocytic-orosomucoid-2-modulates-microglial-activation-and-neuroinflammation
#8
Myungjin Jo, Jong-Heon Kim, Gyunjee Song, Minchul Seo, Eun Mi Hwang, Kyoungho Suk
Orosomucoid (ORM) is an acute-phase protein that belongs to the immunocalin subfamily, a group of small-molecule binding proteins with immunomodulatory functions. Little is known about the role of ORM proteins in the central nervous system. The aim of the present study was to investigate the brain expression of ORM and its role in neuroinflammation. Expression of Orm2, but not Orm1 or Orm3, was highly induced in the mouse brain after systemic injection of lipopolysaccharide (LPS). Plasma levels of ORM2 were also significantly higher in patients with cognitive impairment than in normal subjects...
February 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28192111/effects-of-progesterone-administered-after-mptp-on-dopaminergic-neurons-of-male-mice
#9
Nadhir Litim, Marc Morissette, Thérèse Di Paolo
Progesterone neuroprotection of striatal dopamine (DA) in male mice lesioned with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) was previously reported when administered before MPTP or an hour after. A dose of MPTP to induce a partial lesion was used to model early stages or prodromal Parkinson. We hypothesized that brain DA can be restored by progesterone administered early (24 h) or later (5 days) after MPTP. Male mice received 4 injections of MPTP (8 mg/kg) and progesterone (8 mg/kg) once daily for 5 days started 24 h or 5 days after MPTP...
February 10, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28190394/neuroprotective-effect-of-atremorine-in-an-experimental-model-of-parkinson%C3%A2-s-disease
#10
Ivan Carrera, Lucia Fernandez-Novoa, Carolina Sampedro, Ramon Cacabelos
Parkinsonian-like state was generated in mice by the administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) to study the effects of Atremorine in Parkinson's disease (PD) related neuropathology and behavior deficits. This devastating disease is caused by the progressive degeneration of dopaminergic neurons in the substantia nigra. Numerous therapeutic strategies have been developed to protect neuronal damage, although no effective treatment for PD has been validated yet. This study tested the preventive and therapeutic neuroprotective effect of Atremorine on MPTP parkinsonian mouse model...
February 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28181071/neurotrophic-effect-of-asiatic-acid-a-triterpene-of-centella-asiatica-against-chronic-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-hydrochloride-probenecid-mouse-model-of-parkinson-s-disease-the-role-of-mapk-pi3k-akt-gsk3%C3%AE-and-mtor-signalling-pathways
#11
Jagatheesan Nataraj, Thamilarasan Manivasagam, Arokiasamy Justin Thenmozhi, Musthafa Mohamed Essa
Regulation of various signalling (Ras-MAPK, PI3K and AKT) pathways by augmented activity of neurotrophic factors (NTFs) could prevent or halt the progress of dopaminergic loss in Parkinson's disease (PD). Various in vitro and in vivo experimental studies indicated anti-parkinsonic potential of asiatic acid (AA), a pentacyclic triterpene obtained from Centella asiatica. So the present study is designed to determine the neurotrophic effect of AA against 1-methyl 4-phenyl 1, 2, 3, 6-tetrahydropyridine hydrochloride/probenecid (MPTP/p) neurotoxicity in mice model of PD...
February 8, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28178902/nanobiomaterials-applications-in-neurodegenerative-diseases
#12
Daniela Silva Adaya, Lucinda Aguirre-Cruz, Jorge Guevara, Emma Ortiz-Islas
The blood-brain barrier is the interface between the blood and brain, impeding the passage of most circulating cells and molecules, protecting the latter from foreign substances, and maintaining central nervous system homeostasis. However, its restrictive nature constitutes an obstacle, preventing therapeutic drugs from entering the brain. Usually, a large systemic dose is required to achieve pharmacological therapeutic levels in the brain, leading to adverse effects in the body. As a consequence, various strategies are being developed to enhance the amount and concentration of therapeutic compounds in the brain...
February 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28176658/a-structural-view-of-%C3%AE-b-crystallin-assembly-and-amyloid-aggregation
#13
Zhenying Liu, Shengnan Zhang, Dan Li, Cong Liu
The major len protein αB-crystallin (αB) is an intracellular chaperone. It belongs to the family of small heat shock protein (sHsps) which plays a critical role in maintaining protein homeostasis and preventing protein aggregation, especially under stress conditions. Dysfunction of αB is closely related to cataract, and many neurodegenerative diseases including Alzheimer's, Parkinson's, and Creutzfeldt-Jakob disease. Due to the extremely heterogeneous and polydispersed nature of αB, it remains unclear how αB self-assemblies and prevents its client proteins from aggregation...
February 6, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28167788/crystal-structure-of-the-adenosine-a2a-receptor-bound-to-an-antagonist-reveals-a-potential-allosteric-pocket
#14
Bingfa Sun, Priti Bachhawat, Matthew Ling-Hon Chu, Martyn Wood, Tom Ceska, Zara A Sands, Joel Mercier, Florence Lebon, Tong Sun Kobilka, Brian K Kobilka
The adenosine A2A receptor (A2AR) has long been implicated in cardiovascular disorders. As more selective A2AR ligands are being identified, its roles in other disorders, such as Parkinson's disease, are starting to emerge, and A2AR antagonists are important drug candidates for nondopaminergic anti-Parkinson treatment. Here we report the crystal structure of A2A receptor bound to compound 1 (Cmpd-1), a novel A2AR/N-methyl d-aspartate receptor subtype 2B (NR2B) dual antagonist and potential anti-Parkinson candidate compound, at 3...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28167258/protective-effect-of-nrf2-are-activator-isolated-from-green-perilla-leaves-on-dopaminergic-neuronal-loss-in-a-parkinson-s-disease-model
#15
Yuta Masaki, Yasuhiko Izumi, Atsuko Matsumura, Akinori Akaike, Toshiaki Kume
Parkinson's disease (PD) is a neurodegenerative disorder characterized by a selective loss of dopaminergic neurons in the substantia nigra (SN), and oxidative stress is thought to contribute to the pathogenesis. The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway, which is a cellular defense system against oxidative stress, is a promising target for therapeutics aimed at reducing neuronal death in PD. Previously, we have isolated 2',3'-dihydroxy-4',6'-dimethoxychalcone (DDC) from green perilla leaves as an activator of the Nrf2-ARE pathway...
February 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28164765/commonalities-in-biological-pathways-genetics-and-cellular-mechanism-between-alzheimer-disease-and-other-neurodegenerative-diseases-an-in-silico-updated-overview
#16
Khurshid Ahmad, Mohammad Hassan Baig, Gohar Mushtaq, Mohammad Amjad Kamal, Nigel H Greig, Inho Choi
Alzheimer's disease (AD) is the most common and well-studied neurodegenerative disease (ND). Biological pathways, pathophysiology and genetics of AD show commonalities with other NDs viz. Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS), Huntington's disease (HD), Prion Disease and Dentatorubral-pallidoluysian atrophy (DRPLA). Many of the NDs, sharing the common features and molecular mechanisms suggests that pathology may be directly comparable and be implicated in disease prevention and development of highly effective therapies...
February 3, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28164279/calcipotriol-inhibits-%C3%AE-synuclein-aggregation-in-sh-sy5y-neuroblastoma-cells-by-a-calbindin-d28k-dependent-mechanism
#17
Alexandre N Rcom-H'cheo-Gauthier, Adrian C B Meedeniya, Dean L Pountney
Many neurodegenerative diseases are characterized by the formation of microscopically visible intracellular protein aggregates. α-Synuclein is the key aggregating protein in Parkinson's disease which is characterized by neuronal cytoplasmic Lewy body inclusions. Previous studies have shown relative sparing of neurons in Parkinson's disease and dementia with Lewy bodies that are positive for the vitamin D-dependent calcium buffering protein, calbindin-D28k and that α-synuclein aggregates are excluded from calbindin-D28k-positive neurons...
February 6, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28157651/sesamin-imparts-neuroprotection-against-intrastriatal-6-hydroxydopamine-toxicity-by-inhibition-of-astroglial-activation-apoptosis-and-oxidative-stress
#18
Tourandokht Baluchnejadmojarad, Monireh Mansouri, Jamileh Ghalami, Zahra Mokhtari, Mehrdad Roghani
Parkinson's disease (PD) is one of the most prevalent neurodegenerative disorders in elders. Sesamin is a lignan compound and the active constituent of sesame oil with antioxidant and anti-inflammatory properties. This study was carried out to explore the mechanisms underlying sesamin effect against unilateral striatal 6-hydroxydopamine (6-OHDA) model of PD. Intrastriatal 6-OHDA-lesioned rats were pretreated with sesamin at doses of 10 or 20mg/kg/day for one week. Sesamin at a dose of 20mg/kg attenuated motor imbalance in narrow beam test, lowered striatal level of malondialdehyde (MDA) and reactive oxygen species (ROS), improved superoxide dismutase (SOD) activity, lowered striatal caspase 3 activity and α-synuclein expression, attenuated glial fibrillary acidic protein (GFAP) immunoreactivity, depressed nigral neuronal apoptosis, and prevented damage of dopaminergic neurons using tyrosine hydroxylase (TH) immunohistochemistry...
January 31, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28155912/repurposing-doxycycline-for-synucleinopathies-remodelling-of-%C3%AE-synuclein-oligomers-towards-non-toxic-parallel-beta-sheet-structured-species
#19
Florencia González-Lizárraga, Sergio B Socías, César L Ávila, Clarisa M Torres-Bugeau, Leandro R S Barbosa, Andres Binolfi, Julia E Sepúlveda-Díaz, Elaine Del-Bel, Claudio O Fernandez, Dulce Papy-Garcia, Rosangela Itri, Rita Raisman-Vozari, Rosana N Chehín
Synucleinophaties are progressive neurodegenerative disorders with no cure to date. An attractive strategy to tackle this problem is repurposing already tested safe drugs against novel targets. In this way, doxycycline prevents neurodegeneration in Parkinson models by modulating neuroinflammation. However, anti-inflammatory therapy per se is insufficient to account for neuroprotection. Herein we characterise novel targets of doxycycline describing the structural background supporting its effectiveness as a neuroprotector at subantibiotic doses...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28154522/metal-dyshomeostasis-and-their-pathological-role-in-prion-and-prion-like-diseases-the-basis-for-a-nutritional-approach
#20
REVIEW
Mattia Toni, Maria L Massimino, Agnese De Mario, Elisa Angiulli, Enzo Spisni
Metal ions are key elements in organisms' life acting like cofactors of many enzymes but they can also be potentially dangerous for the cell participating in redox reactions that lead to the formation of reactive oxygen species (ROS). Any factor inducing or limiting a metal dyshomeostasis, ROS production and cell injury may contribute to the onset of neurodegenerative diseases or play a neuroprotective action. Transmissible spongiform encephalopathies (TSEs), also known as prion diseases, are a group of fatal neurodegenerative disorders affecting the central nervous system (CNS) of human and other mammalian species...
2017: Frontiers in Neuroscience
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