keyword
MENU ▼
Read by QxMD icon Read
search

Neurodegeneration

keyword
https://www.readbyqxmd.com/read/28650104/alzheimer-s-disease-and-metabolic-syndrome-a-link-from-oxidative-stress-and-inflammation-to-neurodegeneration
#1
REVIEW
Eduardo Rojas-Gutierrez, Guadalupe Muñoz-Arenas, Samuel Treviño, Blanca Espinosa, Raúl Chavez, Karla Rojas, Gonzalo Flores, Alfonso Díaz, Jorge Guevara
Alzheimer's disease (AD) is the most common cause of dementia and one of the most important causes of morbidity and mortality among the aging population. AD diagnosis is made post-mortem, and the two pathologic hallmarks, particularly evident in the end stages of the illness, are amyloid plaques and neurofibrillary tangles (NFT). Currently, there is no curative treatment for AD. Additionally, there is a strong relation between oxidative stress, metabolic syndrome (MetS) and AD. The high levels of circulating lipids and glucose imbalances amplify lipid peroxidation that gradually diminishes the antioxidant systems, causing high levels of oxidative metabolism that affects cell structure, leading to neuronal damage...
June 26, 2017: Synapse
https://www.readbyqxmd.com/read/28649609/insomnia-and-somnolence-in-idiopathic-rbd-a-prospective-cohort-study
#2
Ronald B Postuma, Jean-François Gagnon, Amelie Pelletier, Jacques Y Montplaisir
Although some sleep disorders are markers of prodromal Parkinson's disease and dementia with Lewy bodies, it is unclear whether insomnia and somnolence can predict disease. We assessed a large cohort of patients with idiopathic rapid eye movement sleep behavior disorder and age/sex matched controls, comparing the Epworth sleepiness scale, the Insomnia Severity Index, the Pittsburgh Sleep Quality Index, and polysomnographic variables. In those with repeated scales, we assessed change over time. Finally, we assessed whether sleep abnormalities predicted defined neurodegenerative disease...
2017: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/28649514/early-hematopoietic-stem-cell-transplantation-in-a-patient-with-severe-mucopolysaccharidosis-ii-a-7%C3%A2-years-follow-up
#3
Anneliese L Barth, Tatiana S P C de Magalhães, Ana Beatriz R Reis, Maria Lucia de Oliveira, Fernanda B Scalco, Nicolette C Cavalcanti, Daniel S E Silva, Danielle A Torres, Alessandra A P Costa, Carmem Bonfim, Roberto Giugliani, Juan C Llerena, Dafne D G Horovitz
Mucopolysaccharidosis type II (MPS II - Hunter syndrome) is an X-linked lysosomal storage disorder caused by a deficiency in the enzyme iduronate-2 sulfatase (I2S), leading to the accumulation of the glycosaminoglycans, affecting multiple organs and systems. Enzyme replacement therapy does not cross the blood brain barrier, limiting results in neurological forms of the disease. Another option of treatment for severe MPS, hematopoietic stem cell transplantation (HSCT) has become the treatment of choice for the severe form of MPS type I, since it can preserve neurocognition when performed early in the course of the disease...
September 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28649492/relationship-between-brainstem-neurodegeneration-and-clinical-impairment-in-traumatic-spinal-cord-injury
#4
Patrick Grabher, Claudia Blaiotta, John Ashburner, Patrick Freund
BACKGROUND: Brainstem networks are pivotal in sensory and motor function and in recovery following experimental spinal cord injury (SCI). OBJECTIVE: To quantify neurodegeneration and its relation to clinical impairment in major brainstem pathways and nuclei in traumatic SCI. METHODS: Quantitative MRI data of 30 chronic traumatic SCI patients (15 with tetraplegia and 15 with paraplegia) and 23 controls were acquired. Patients underwent a full neurological examination...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28649200/cognitive-variability-during-middle-age-possible-association-with-neurodegeneration-and-cognitive-reserve
#5
Daniel Ferreira, Alejandra Machado, Yaiza Molina, Antonieta Nieto, Rut Correia, Eric Westman, José Barroso
Objective: Increased variability in cognition with age has been argued as an indication of pathological processes. Focusing on early detection of neurodegenerative disorders, we investigated variability in cognition in healthy middle-aged adults. In order to understand possible determinants of this variability, we also investigated associations with cognitive reserve, neuroimaging markers, subjective memory complaints, depressive symptomatology, and gender. Method: Thirty-one 50 ± 2 years old individuals were investigated as target group and deviation was studied in comparison to a reference younger group of 30 individuals 40 ± 2 years old...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28648389/stress-primes-microglial-polarization-after-global-ischemia-therapeutic-potential-of-progesterone
#6
Claudia Espinosa-Garcia, Iqbal Sayeed, Seema Yousuf, Fahim Atif, Elena G Sergeeva, Gretchen N Neigh, Donald G Stein
Despite the fact stress is associated with increased risk of stroke and worsened outcome, most preclinical studies have ignored this comorbid factor, especially in the context of testing neuroprotective treatments. Preclinical research suggests that stress primes microglia, resulting in an enhanced reactivity to a subsequent insult and potentially increasing vulnerability to stroke. Ischemia-induced activated microglia can be polarized into a harmful phenotype, M1, which produces pro-inflammatory cytokines, or a protective phenotype, M2, which releases anti-inflammatory cytokines and neurotrophic factors...
June 22, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28648146/emerging-roles-of-protein-disulfide-isomerase-in-cancer
#7
Eunyoug Lee, Do Hee Lee
Protein disulfide isomerase (PDI) family is a group of multifunctional endoplasmic reticulum (ER) enzymes mediating the formation of disulfide bonds, catalyzing the cysteine-based redox reactions and assisting the quality control of the client proteins. Recent structural and functional studies have demonstrated that PDI members not only play an essential role in the proteostasis in the ER but also exert diverse effects in numerous human diseases including cancer and neurodegenerative diseases. Increasing evidence suggests that PDI is actively involved in the proliferation, survival, and metastasis of several types of cancer cells...
June 26, 2017: BMB Reports
https://www.readbyqxmd.com/read/28647871/cytoskeleton-as-a-target-of-quinolinic-acid-neurotoxicity-insight-from-animal-models
#8
REVIEW
Paula Pierozan, Regina Pessoa-Pureur
Cytoskeletal proteins are increasingly recognized as having important roles as a target of the action of different neurotoxins. In the last years, several works of our group have shown that quinolinic acid (QUIN) was able to disrupt the homeostasis of the cytoskeleton of neural cells and this was associated with cell dysfunction and neurodegeneration. QUIN is an excitotoxic metabolite of tryptophan metabolism and its accumulation is associated with several neurodegenerative diseases. In the present review, we provide a comprehensive view of the actions of QUIN upstream of glutamate receptors, eliciting kinase/phosphatase signaling cascades that disrupt the homeostasis of the phosphorylation system associated with intermediate filament proteins of astrocytes and neurons...
June 24, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28647514/aqueous-cigarette-tar-extracts-disrupt-corticogenesis-from-human-embryonic-stem-cells-in-vitro
#9
Aynun N Begum, Jose S Aguilar, Yiling Hong
BACKGROUND: Cigarette butts are the most common form of litter in the world, and approximately 4.5 trillion smoked cigarettes are discarded every year worldwide. Cigarette butts contain over 4000 chemicals, many of which are known to have neurotoxic effects. Stem cell neuronal differentiation provides an excellent cellular model with which to examine the impact of aqueous cigarette tar extracts (ACTEs) on neurodevelopment. METHODS: We have developed a neurosphere-based stem cell neuronal differentiation protocol that can recapitulate corticogenesis and produce cell types that are similar to upper and lower layer cortical projection neurons found in the germinal zone of the developing human cortex...
June 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28647491/emerging-pharmacological-approaches-to-promote-neurogenesis-from-endogenous-glial-cells
#10
REVIEW
Enrica Boda, Giulia Nato, Annalisa Buffo
Neurodegenerative disorders are emerging as leading contributors to the global disease burden. While some drug-based approaches have been designed to limit or prevent neuronal loss following acute damage or chronic neurodegeneration, regeneration of functional neurons in the adult Central Nervous System (CNS)still remains an unmet need. In this context, theexploitation of endogenous cellsources has recently gained an unprecedented attention, thanks to the demonstration that, in some CNS regions or under specific circumstances, glial cells can activate spontaneous neurogenesis or can be instructed to produceneurons in the adult mammalian CNS parenchyma...
June 21, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28647367/mitochondrial-quality-control-pathways-pink1-acts-as-a-gatekeeper
#11
Elvira P Leites, Vanessa A Morais
Mitochondria have a pivotal role in the maintenance of cell homeostasis and survival. Mitochondria are involved in processes such as ATP production, reactive oxygen species production, apoptosis induction, calcium homeostasis and protein degradation. Thus, mechanisms that regulate the intrinsic quality of mitochondria have a crucial role in dictating overall cell fate. The importance of these well-regulated mechanisms is highlighted in disease scenarios such as neurodegeneration, cancer and neuromuscular atrophy...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646838/immune-response-cytokines-as-potential-biomarkers-for-ddt-induced-neurodegeneration
#12
Héctor Luis Maldonado-Pérez, Judith Graber, Mark Gregory Robson
Background: The world incidence rate of Alzheimer’s Disease (AD) is 64 cases per 1,000 individuals. Due to the aging population, the prevalence of AD is however increasing and yet, little remains known about the etiology of AD. Objective: Previous studies suggested relationships between AD, neuro-inflammation and organochloride pesticide exposures, therefore, we aimed to study the association between DDT and possible biomarkers of AD. Materials and Methods: We explored literature on inflammation, pesticide exposure and biomarkers associated with AD...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28646794/dexibuprofen-prevents-neurodegeneration-and-cognitive-decline-in-appswe-ps1de9-through-multiple-signaling-pathways
#13
Miren Ettcheto, Elena Sánchez-López, Laura Pons, Oriol Busquets, Jordi Olloquequi, Carlos Beas-Zarate, Merce Pallas, Maria Luisa García, Carme Auladell, Jaume Folch, Antoni Camins
The aim of the present study is to elucidate the neuronal pathways associated to NSAIDs causing a reduction of the risk and progression of Alzheimer's disease. The research was developed administering the active enantiomer of ibuprofen, dexibuprofen (DXI), in order to reduce associated gastric toxicity. DXI was administered from three to six-month-old female APPswe/PS1dE9 mice as a model of familial Alzheimer's disease. DXI treatment reduced the activation of glial cells and the cytokine release involved in the neurodegenerative process, especially TNFα...
June 15, 2017: Redox Biology
https://www.readbyqxmd.com/read/28646348/tau-induced-ca-2-calmodulin-dependent-protein-kinase-iv-activation-aggravates-nuclear-tau-hyperphosphorylation
#14
Yu-Ping Wei, Jin-Wang Ye, Xiong Wang, Li-Ping Zhu, Qing-Hua Hu, Qun Wang, Dan Ke, Qing Tian, Jian-Zhi Wang
Hyperphosphorylated tau is the major protein component of neurofibrillary tangles in the brains of patients with Alzheimer's disease (AD). However, the mechanism underlying tau hyperphosphorylation is not fully understood. Here, we demonstrated that exogenously expressed wild-type human tau40 was detectable in the phosphorylated form at multiple AD-associated sites in cytoplasmic and nuclear fractions from HEK293 cells. Among these sites, tau phosphorylated at Thr205 and Ser214 was almost exclusively found in the nuclear fraction at the conditions used in the present study...
June 23, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/28646336/nogo-a-antibodies-enhance-axonal-repair-and-remyelination-in-neuro-inflammatory-and-demyelinating-pathology
#15
Benjamin V Ineichen, Sandra Kapitza, Christiane Bleul, Nicolas Good, Patricia S Plattner, Maryam S Seyedsadr, Julia Kaiser, Marc P Schneider, Björn Zörner, Roland Martin, Michael Linnebank, Martin E Schwab
Two hallmarks of chronic multiple sclerosis lesions are the absence of significant spontaneous remyelination and primary as well as secondary neurodegeneration. Both characteristics may be influenced by the presence of inhibitory factors preventing myelin and neuronal repair. We investigated the potential of antibodies against Nogo-A, a well-known inhibitory protein for neuronal growth and plasticity, to enhance neuronal regeneration and remyelination in two animal models of multiple sclerosis. We induced a targeted experimental autoimmune encephalomyelitis (EAE) lesion in the dorsal funiculus of the cervical spinal cord of adult rats resulting in a large drop of skilled forelimb motor functions...
June 23, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28645787/striatal-hypodopamine-phenotypes-found-in-transgenic-mice-that-overexpress-glial-cell-line-derived-neurotrophic-factor
#16
Hidekazu Sotoyama, Yuriko Iwakura, Kanako Oda, Toshikuni Sasaoka, Nobuyuki Takei, Akiyoshi Kakita, Hideki Enomoto, Hiroyuki Nawa
Glial cell line-derived neurotrophic factor (GDNF) positively regulates the development and maintenance of in vitro dopaminergic neurons. However, the in vivo influences of GDNF signals on the brain dopamine system are controversial and not fully defined. To address this question, we analyzed dopaminergic phenotypes of the transgenic mice that overexpress GDNF under the control of the glial Gfap promoter in the brain. Compared with wild-type, the GDNF transgenic mice contained higher levels of GDNF protein and phosphorylated RET receptors in the brain...
June 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28645156/rem-sleep-behavior-disorder-and-cognitive-impairment-in-parkinson-s-disease
#17
Natalia Jozwiak, Ronald B Postuma, Jacques Montplaisir, Véronique Latreille, Michel Panisset, Sylvain Chouinard, Pierre-Alexandre Bourgouin, Jean-François Gagnon
Study Objectives: REM sleep behavior disorder (RBD) is a parasomnia affecting 33 to 46% of patients with Parkinson's disease (PD). The existence of a unique and specific impaired cognitive profile in PD patients with RBD is still controversial. We extensively assessed cognitive functions to identify whether RBD is associated with more severe cognitive deficits in nondemented patients with PD. Methods: One hundred and sixty-two participants, including 53 PD patients with RBD, 40 PD patients without RBD, and 69 healthy subjects, underwent polysomnography, a neurological assessment, and an extensive neuropsychological exam to assess attention, executive functions, episodic learning and memory, visuospatial abilities, and language...
June 22, 2017: Sleep
https://www.readbyqxmd.com/read/28644588/clinical-consensus-guidelines-on-the-application-of-cerebrospinal-fluid-biomarkers-for-alzheimer-s-disease-diagnosis-recommendations-of-the-irish-network-for-biomarkers-in-neurodegeneration
#18
A M Miller, E Begley, R Coen, M Doyle, J Dunne, S Hutchinson, S P Kennelly, R A Kenny, R P Killeen, A Lynch, S O'Dwyer, C O'Neill, S S O'Sullvan, M J Rowan, N Sheehy, C McGuigan, B A Lawlor
It is accepted that a lumbar puncture (LP) and cerebrospinal fluid (CSF) biomarker analysis support the routine diagnostic work-up for the differential diagnosis of dementia due to Alzheimer's disease (AD) within certain patient cohorts1. These tests, which measure CSF protein concentrations of amyloid-β42 (Aβ42), total tau (t-tau) and phospho tau (p-tau), were recently validated, accredited and made available clinically for the first time in Ireland. A working group, comprising Irish clinical and scientific researchers, met to review a) the validation results; b) international consensus opinions, and c) research and clinical evidence as to the clinical utility of CSF biomarker analysis for AD dementia diagnosis...
December 12, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/28643372/fine-tuning-perk-signaling-for-neuroprotection
#19
REVIEW
Mark Halliday, Daniel Hughes, Giovanna Mallucci
Protein translation and folding are tightly controlled processes in all cells, by proteostasis, an important component of which is the unfolded protein response (UPR). During periods of endoplasmic reticulum stress due to protein misfolding, the UPR activates a coordinated response in which the PERK branch activation restricts translation, while a variety of genes involved with protein folding, degradation, chaperone expression and stress responses are induced through signaling of the other branches. Chronic overactivation of the UPR, particularly the PERK branch is observed in the brains of patients in a number of protein misfolding neurodegenerative diseases, including Alzheimer's, and Parkinson's diseases and the taopathies...
June 23, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28643232/caffeine-protects-against-anticonvulsant-induced-neurotoxicity-in-the-developing-rat-brain
#20
Stefanie Endesfelder, Ulrike Weichelt, Cornelia Schiller, Marco Sifringer, Ivo Bendix, Christoph Bührer
Phenobarbital is the most commonly used drug for the treatment of neonatal seizures but may induce neurodegeneration in the developing brain. Methylxanthine caffeine is used for the treatment of apnea in newborn infants and appears to be neuroprotective, as shown by antiapoptotic and anti-inflammatory effects in oxidative stress models in newborn rodents and reduced rates of cerebral palsy in human infants treated with caffeine. We hypothesized that caffeine may counteract the proapoptotic effects of phenobarbital in newborn rats...
June 22, 2017: Neurotoxicity Research
keyword
keyword
1393
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"