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Parkinsons Disease & NIR

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69 papers 0 to 25 followers Effect of trans-cranial and intracranial near infrared light in Parkinson's Disease. Plus assorted articles on PD which will be helpful in trying to understand the effect of NIR in PD.
https://www.readbyqxmd.com/read/26297812/transcranial-direct-current-stimulation-in-parkinson-s-disease-neurophysiological-mechanisms-and-behavioral-effects
#1
REVIEW
Sanne Broeder, Evelien Nackaerts, Elke Heremans, Griet Vervoort, Raf Meesen, Geert Verheyden, Alice Nieuwboer
Recent research has highlighted the potential of transcranial direct current stimulation (tDCS) to complement rehabilitation effects in the elderly and in patients with neurological diseases, including Parkinson's disease (PD). TDCS can modulate cortical excitability and enhance neurophysiological mechanisms that compensate for impaired learning in PD. The objective of this systematic review is to provide an overview of the effects of tDCS on neurophysiological and behavioral outcome measures in PD patients, both as a stand-alone and as an adjunctive therapy...
October 2015: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27889907/activation-of-nur77-in-microglia-attenuates-proinflammatory-mediators-production-and-protects-dopaminergic-neurons-from-inflammation-induced-cell-death
#2
Tian-Ya Liu, Xiao-Ying Yang, Long-Tai Zheng, Guang-Hui Wang, Xue-Chu Zhen
Microglia-mediated neuroinflammation plays a critical role in the pathological development of Parkinson's disease (PD). Orphan nuclear receptor Nur77 (Nur77) is abundant in neurons, while its role in microglia-mediated neuroinflammation remains unclear. The present data demonstrated that the expression of Nur77 in microglia was reduced accompanied with microglia activation in response to lipopolysaccharide (LPS) in vitro and in experimental MPTP-PD mouse model. Nur77 overexpression or application of Nur77 agonist CsnB suppressed the expression of proinflammatory genes, such as iNOS, COX-2, IL-1β, and TNF-α in the activated microglia, while silenced Nur77 exaggerated the inflammatory responses in microglia...
November 27, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27900499/cardiac-parasympathetic-dysfunction-in-the-early-phase-of-parkinson-s-disease
#3
Masashi Suzuki, Tomohiko Nakamura, Masaaki Hirayama, Miki Ueda, Masahisa Katsuno, Gen Sobue
Cardiac parasympathetic function is strongly affected by aging. Although sympathetic dysfunction has been well documented in Parkinson's disease (PD), cardiac parasympathetic dysfunction has not been well studied. The objective of this study was to clarify the development of cardiac parasympathetic dysfunction in the early phase of PD and to explore the age-corrected correlation between cardiac parasympathetic dysfunction and cardiac sympathetic dysfunction. We reviewed 25 healthy controls and 56 patients with idiopathic PD of Hoehn and Yahr stages I-III...
November 29, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/22666627/patterns-of-cell-activity-in-the-subthalamic-region-associated-with-the-neuroprotective-action-of-near-infrared-light-treatment-in-mptp-treated-mice
#4
Victoria E Shaw, Cassandra Peoples, Sharon Spana, Keyoumars Ashkan, Alim-Louis Benabid, Jonathan Stone, Gary E Baker, John Mitrofanis
We have shown previously that near-infrared light (NIr) treatment or photobiomodulation neuroprotects dopaminergic cells in substantia nigra pars compacta (SNc) from degeneration induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in mice. The present study explores whether NIr treatment changes the patterns of Fos expression in the subthalamic region, namely, the subthalamic nucleus (STN) and zona incerta (ZI); both cell groups have abnormally overactive cells in parkinsonian cases. BALB/c mice were treated with MPTP (100-250 mg/kg) or saline either over 30 hours followed by either a two-hour or six-day survival period (acute model) or over five weeks followed by a three-week survival period (chronic model)...
2012: Parkinson's Disease
https://www.readbyqxmd.com/read/27720003/epidemiology-of-parkinson-disease
#5
Andrea Lee, Rebecca M Gilbert
Parkinson disease (PD) is a common progressive neurodegenerative condition, causing both motor and non motor symptoms. Motor symptoms include stiffness, slowness, rest tremor and poor postural reflexes, whereas nonmotor symptoms include abnormalities of mood, cognition, sleep and autonomic function. Affected patients show cell loss in the substantia nigra pars compacta, and accumulation of aggregated alpha-synuclein into intracellular structures called Lewy bodies, within specific brain regions. The main known non modifiable risk factor is age...
November 2016: Neurologic Clinics
https://www.readbyqxmd.com/read/27734267/anti-inflammatory-and-neuroprotective-effects-of-pge2-ep4-signaling-in-models-of-parkinson-s-disease
#6
Suraj S Pradhan, Kirstie Salinas, Alexis C Garduno, Jenny U Johansson, Qian Wang, Amy Manning-Bog, Katrin I Andreasson
Inflammation is a ubiquitous factor accompanying normal aging and neurodegeneration, and recent studies indicate a major contribution of inducible cyclooxygenase (COX-2) and its downstream prostaglandin signaling pathways in modulating neuroinflammatory responses and neuronal function. We have previously shown that the prostaglandin PGE2 receptor EP4 suppresses innate immune responses in models of systemic inflammation. Here we investigated the role of the EP4 receptor in models of Parkinson's disease (PD)...
October 12, 2016: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/27762319/midbrain-gene-screening-identifies-a-new-mesoaccumbal-glutamatergic-pathway-and-a-marker-for-dopamine-cells-neuroprotected-in-parkinson-s-disease
#7
Thomas Viereckel, Sylvie Dumas, Casey J A Smith-Anttila, Bianca Vlcek, Zisis Bimpisidis, Malin C Lagerström, Åsa Konradsson-Geuken, Åsa Wallén-Mackenzie
The ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) of the midbrain are associated with Parkinson's disease (PD), schizophrenia, mood disorders and addiction. Based on the recently unraveled heterogeneity within the VTA and SNc, where glutamate, GABA and co-releasing neurons have been found to co-exist with the classical dopamine neurons, there is a compelling need for identification of gene expression patterns that represent this heterogeneity and that are of value for development of human therapies...
October 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/25469453/the-effect-of-different-doses-of-near-infrared-light-on-dopaminergic-cell-survival-and-gliosis-in-mptp-treated-mice
#8
COMPARATIVE STUDY
Nabil El Massri, Daniel M Johnstone, Cassandra L Peoples, Cécile Moro, Florian Reinhart, Napoleon Torres, Jonathan Stone, Alim-Louis Benabid, John Mitrofanis
We have used the MPTP (1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) mouse model to explore whether (i) the neuroprotective effect of near infrared light (NIr) treatment in the SNc is dose-dependent and (ii) the relationship between tyrosine hydroxylase (TH)+ terminal density and glial cells in the caudate-putamen complex (CPu). Mice received MPTP injections (50 mg/kg) and 2 J/cm2 NIr dose with either 2 d or 7 d survival period. In another series, with a longer 14 d survival period, mice had a stronger MPTP regime (100 mg/kg) and either 2 J/cm2 or 4 J/cm2 NIr dose...
2016: International Journal of Neuroscience
https://www.readbyqxmd.com/read/15561420/some-certainty-for-the-zone-of-uncertainty-exploring-the-function-of-the-zona-incerta
#9
REVIEW
J Mitrofanis
The zona incerta (ZI), first described over a century ago by Auguste Forel as a "region of which nothing certain can be said," forms a collection of cells that derives from the diencephalon. To this day, we are still not certain of the precise function of this "zone of uncertainty" although many have been proposed, from controlling visceral activity to shifting attention and from influencing arousal to maintaining posture and locomotion. In this review, I shall outline the recent advances in the understanding of the structure, connectivity and functions of the ZI...
2005: Neuroscience
https://www.readbyqxmd.com/read/27262035/reply
#10
John Mitrofanis, Cécile Moro, Alim-Louis Benabid
No abstract text is available yet for this article.
August 2016: Annals of Neurology
https://www.readbyqxmd.com/read/26777890/intranasal-insulin-protects-against-substantia-nigra-dopaminergic-neuronal-loss-and-alleviates-motor-deficits-induced-by-6-ohda-in-rats
#11
Y Pang, S Lin, C Wright, J Shen, K Carter, A Bhatt, L-W Fan
Protection of substantia nigra (SN) dopaminergic (DA) neurons by neurotrophic factors (NTFs) is one of the promising strategies in Parkinson's disease (PD) therapy. A major clinical challenge for NTF-based therapy is that NTFs need to be delivered into the brain via invasive means, which often shows limited delivery efficiency. The nose to brain pathway is a non-invasive brain drug delivery approach developed in recent years. Of particular interest is the finding that intranasal insulin improves cognitive functions in Alzheimer's patients...
March 24, 2016: Neuroscience
https://www.readbyqxmd.com/read/22194706/micrornas-in-human-diseases-from-autoimmune-diseases-to-skin-psychiatric-and-neurodegenerative-diseases
#12
Tai-You Ha
MicroRNAs (miRNAs) are small noncoding RNA molecules that negatively regulate gene expression via degradation or translational repression of their target messenger RNAs (mRNAs). Recent studies have clearly demonstrated that miRNAs play critical roles in several biologic processes, including cell cycle, differentiation, cell development, cell growth, and apoptosis and that miRNAs are highly expressed in regulatory T (Treg) cells and a wide range of miRNAs are involved in the regulation of immunity and in the prevention of autoimmunity...
October 2011: Immune Network
https://www.readbyqxmd.com/read/27693549/pharmacologic-antagonism-of-dopamine-receptor-d3-attenuates-neurodegeneration-and-motor-impairment-in-a-mouse-model-of-parkinson-s-disease
#13
Daniela Elgueta, María S Aymerich, Francisco Contreras, Andro Montoya, Marta Celorrio, Estefanía Rojo-Bustamante, Eduardo Riquelme, Hugo González, Mónica Vásquez, Rafael Franco, Rodrigo Pacheco
Neuroinflammation involves the activation of glial cells, which is associated to the progression of neurodegeneration in Parkinson's disease. Recently, we and other researchers demonstrated that dopamine receptor D3 (D3R)-deficient mice are completely refractory to neuroinflammation and consequent neurodegeneration associated to the acute intoxication with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). In this study we examined the therapeutic potential and underlying mechanism of a D3R-selective antagonist, PG01037, in mice intoxicated with a chronic regime of administration of MPTP and probenecid (MPTPp)...
September 28, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27539857/a-novel-developmental-role-for-dopaminergic-signaling-to-specify-hypothalamic-neurotransmitter-identity
#14
Yu-Chia Chen, Svetlana Semenova, Stanislav Rozov, Maria Sundvik, Joshua L Bonkowsky, Pertti Panula
Hypothalamic neurons expressing histamine and orexin/hypocretin (hcrt) are necessary for normal regulation of wakefulness. In Parkinson's disease, the loss of dopaminergic neurons is associated with elevated histamine levels and disrupted sleep/wake cycles, but the mechanism is not understood. To characterize the role of dopamine in the development of histamine neurons, we inhibited the translation of the two non-allelic forms of tyrosine hydroxylase (th1 and th2) in zebrafish larvae. We found that dopamine levels were reduced in both th1 and th2 knockdown, but the serotonin level and number of serotonin neurons remained unchanged...
October 14, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27563362/potential-role-of-caffeine-in-the-treatment-of-parkinson-s-disease
#15
Mohsin H K Roshan, Amos Tambo, Nikolai P Pace
Parkinson's disease [PD] is the second most common neurodegenerative disorder after Alzheimer's disease, affecting 1% of the population over the age of 55. The underlying neuropathology seen in PD is characterised by progressive loss of dopaminergic neurons in the substantia nigra pars compacta with the presence of Lewy bodies. The Lewy bodies are composed of aggregates of α-synuclein. The motor manifestations of PD include a resting tremor, bradykinesia, and muscle rigidity. Currently there is no cure for PD and motor symptoms are treated with a number of drugs including levodopa [L-dopa]...
2016: Open Neurology Journal
https://www.readbyqxmd.com/read/27613667/dopamine-and-temporal-attention-an-attentional-blink-study-in-parkinson-s-disease-patients-on-and-off-medication
#16
H A Slagter, N C van Wouwe, K Kanoff, R P P P Grasman, D O Claassen, W P M van den Wildenberg, S A Wylie
The current study aimed to shed more light on the role of dopamine in temporal attention. To this end, we pharmacologically manipulated dopamine levels in a large sample of Parkinson's disease patients (n=63) while they performed an attentional blink (AB) task in which they had to identify two targets (T1 and T2) presented in close temporal proximity among distractors. We specifically examined 1) differences in the magnitude of the AB between unmedicated Parkinson patients, who have depleted levels of striatal dopamine, and healthy controls, and 2) effects of two dopaminergic medications (l-DOPA and dopamine agonists) on the AB in the Parkinson patients at the group level and as a function of individual baseline performance...
October 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27708130/distinct-brain-networks-underlie-cognitive-dysfunction-in-parkinson-and-alzheimer-diseases
#17
Paul J Mattis, Martin Niethammer, Wataru Sako, Chris C Tang, Amir Nazem, Marc L Gordon, Vicky Brandt, Vijay Dhawan, David Eidelberg
OBJECTIVE: To determine whether cognitive impairment in Parkinson disease (PD) and Alzheimer disease (AD) derives from the same network pathology. METHODS: We analyzed (18)F-fluorodeoxyglucose PET scans from 40 patients with AD and 40 age-matched healthy controls from the Alzheimer's Disease Neuroimaging Initiative and scanned an additional 10 patients with AD and 10 healthy controls at The Feinstein Institute for Medical Research to derive an AD-related metabolic pattern (ADRP) analogous to our previously established PD cognition-related pattern (PDCP) and PD motor-related pattern (PDRP)...
November 1, 2016: Neurology
https://www.readbyqxmd.com/read/27545884/the-mitochondria-regulated-immune-pathway-activated-in-the-c-%C3%A2-elegans-intestine-is-neuroprotective
#18
Madhusudana Rao Chikka, Charumathi Anbalagan, Katherine Dvorak, Kyle Dombeck, Veena Prahlad
Immunological mediators that originate outside the nervous system can affect neuronal health. However, their roles in neurodegeneration remain largely unknown. Here, we show that the p38MAPK-mediated immune pathway activated in intestinal cells of Caenorhabditis elegans upon mitochondrial dysfunction protects neurons in a cell-non-autonomous fashion. Specifically, mitochondrial complex I dysfunction induced by rotenone activates the p38MAPK/CREB/ATF-7-dependent innate immune response pathway in intestinal cells of C...
August 30, 2016: Cell Reports
https://www.readbyqxmd.com/read/27622213/adult-conditional-knockout-of-pgc-1%C3%AE-leads-to-loss-of-dopamine-neurons
#19
Haisong Jiang, Sung-Ung Kang, Shuran Zhang, Senthilkumar Karuppagounder, Jinchong Xu, Yong-Kyu Lee, Bong-Gu Kang, Yunjong Lee, Jianmin Zhang, Olga Pletnikova, Juan C Troncoso, Shelia Pirooznia, Shaida A Andrabi, Valina L Dawson, Ted M Dawson
Parkinson's disease (PD) is a chronic progressive neurodegenerative disorder. Recent studies have implicated a role for peroxisome proliferator-activated receptor γ coactivator protein-1α (PGC-1α) in PD and in animal or cellular models of PD. The role of PGC-1α in the function and survival of substantia nigra pars compacta (SNpc) dopamine neurons is not clear. Here we find that there are four different PGC-1α isoforms expressed in SH-SY5Y cells, and these four isoforms are expressed across subregions of mouse brain...
July 2016: ENeuro
https://www.readbyqxmd.com/read/27551449/involvement-of-inhibitory-pas-domain-protein-in-neuronal-cell-death-in-parkinson-s-disease
#20
S Torii, S Kasai, A Suzuki, Y Todoroki, K Yokozawa, K-I Yasumoto, N Seike, H Kiyonari, Y Mukumoto, A Kakita, K Sogawa
Inhibitory PAS domain protein (IPAS), a repressor of hypoxia-inducible factor-dependent transcription under hypoxia, was found to exert pro-apoptotic activity in oxidative stress-induced cell death. However, physiological and pathological processes associated with this activity are not known. Here we show that IPAS is a key molecule involved in neuronal cell death in Parkinson's disease (PD). IPAS was ubiquitinated by Parkin for proteasomal degradation following carbonyl cyanide m-chlorophenyl hydrazone treatment...
2015: Cell Death Discovery
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