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https://www.readbyqxmd.com/read/28643167/microbiome-probiotics-and-neurodegenerative-diseases-deciphering-the-gut-brain-axis
#1
REVIEW
Susan Westfall, Nikita Lomis, Imen Kahouli, Si Yuan Dia, Surya Pratap Singh, Satya Prakash
The gut microbiota is essential to health and has recently become a target for live bacterial cell biotherapies for various chronic diseases including metabolic syndrome, diabetes, obesity and neurodegenerative disease. Probiotic biotherapies are known to create a healthy gut environment by balancing bacterial populations and promoting their favorable metabolic action. The microbiota and its respective metabolites communicate to the host through a series of biochemical and functional links thereby affecting host homeostasis and health...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28640632/gut-microbiota-nitric-oxide-and-microglia-as-pre-requisites-for-neurodegenerative-disorders
#2
Joyce Ka Yu Tse
Regulating fluctuating endogenous nitric oxide (NO) levels is necessary for proper physiological functions. Aberrant NO pathways are implicated in a number of neurological disorders, including Alzheimer's Disease (AD) and Parkinson's Disease. The mechanism of NO in oxidative and nitrosative stress with pathological consequences involves reactions with reactive oxygen species (e.g. superoxide) to form the highly reactive peroxynitrite, hydrogen peroxide, hypochloride ions and hydroxyl radical. NO levels are typically regulated by endogenous nitric oxide synthases (NOS), and inflammatory iNOS is implicated in the pathogenesis of neurodegenerative diseases, in which elevated NO mediates axonal degeneration and activates cyclooxygenases to provoke neuroinflammation...
June 22, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28628736/-it-s-definitely-not-alzheimer-s-perceived-benefits-and-drawbacks-of-a-mild-cognitive-impairment-diagnosis
#3
Tim Gomersall, Sarah Kate Smith, Charlotte Blewett, Arlene Astell
OBJECTIVES: To understand the perceived benefits and drawbacks of a mild cognitive impairment (MCI) diagnosis from the perspective of those living with the label. METHODS: Participants were included if they had recently (within 6 months) received a MCI diagnosis. We also recruited close family members to gain their perspectives. Each was interviewed separately with a semi-structured topic guide covering three areas: (1) experience of cognitive impairments and changes in the individual; (2) impact of cognitive impairment(s) on daily activities and social relationships; and (3) experience of the diagnosis process and living with the label...
June 19, 2017: British Journal of Health Psychology
https://www.readbyqxmd.com/read/28625939/promoting-the-maintenance-of-satisfactory-communication-strategies-used-by-caregivers-and-medical-staff-with-people-suffering-from-alzheimer-s-disease
#4
Marie Vachon, Marie-Christine Veilleux, Joël Macoir
The goal of this literature review was to determine communication strategies that foster interactions between individuals with Alzheimer's disease (AD) and caregivers or medical staff. A search of PubMed and PsycINFO databases was conducted using combinations of the following terms: Alzheimer, family, caregiver, communication, language, treatment, intervention, therapy, communication strategies, functional communication and daily living activities. Studies were chosen based on the original language of the text, year of publication, peer-review status and specificity of the results regarding communication strategies in AD...
June 1, 2017: Gériatrie et Psychologie Neuropsychiatrie du Vieillissement
https://www.readbyqxmd.com/read/28604627/the-role-of-affect-and-cognition-in-processing-messages-about-early-diagnosis-for-alzheimer-s-disease-by-older-people
#5
Patrick De Pelsmacker, Martine Lewi, Veroline Cauberghe
Through early diagnosis of symptoms, the Alzheimer's disease process can be decelerated. The main concern is to encourage the population at risk to take responsible actions at the earliest stage of the onset of the disease. Persuasive communication is essential to achieve this. In an experimental study, the evaluation of awareness messages for early diagnosis containing weak and strong arguments and negative and positive images was performed on a sample of older Belgians. The mediating role of affective responses and message thoughts was explored...
June 12, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28598839/functional-disintegration-of-the-default-mode-network-in-prodromal-alzheimer-s-disease
#6
Kim N H Dillen, Heidi I L Jacobs, Juraj Kukolja, Nils Richter, Boris von Reutern, Özgür A Onur, Karl-Josef Langen, Gereon R Fink
Neurodegenerative brain changes can affect the functional connectivity strength between nodes of the default-mode network (DMN), which may underlie changes in cognitive performance. It remains unclear how the functional connectivity strength of DMN nodes differs from healthy to pathological aging and whether these changes are cognitively relevant. We used resting-state functional magnetic resonance imaging to investigate the functional connectivity strength across five DMN nodes in 25 healthy controls (HC), 28 subjective cognitive decline (SCD) participants, and 25 prodromal Alzheimer's disease (AD) patients...
June 3, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28593829/communication-behaviors-associated-with-successful-conversation-in-semantic-variant-primary-progressive-aphasia
#7
Cathleen Taylor-Rubin, Karen Croot, Emma Power, Sharon A Savage, John R Hodges, Leanne Togher
BACKGROUND: Primary progressive aphasia (PPA) affects a range of language and cognitive domains that impact on conversation. Little is known about conversation breakdown in the semantic variant of PPA (svPPA, also known as semantic dementia). This study investigates conversation of people with svPPA. METHODS: Dyadic conversations about everyday activities between seven individuals with svPPA and their partners, and seven control pairs were video recorded and transcribed...
June 8, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28588474/a-life-long-approach-to-physical-activity-for-brain-health
#8
Helen Macpherson, Wei-P Teo, Luke A Schneider, Ashleigh E Smith
It is well established that engaging in lifelong Physical activity (PA) can help delay the onset of many chronic lifestyle related and non-communicable diseases such as cardiovascular disease, type two diabetes, cancer and chronic respiratory diseases. Additionally, growing evidence also documents the importance of PA for brain health, with numerous studies indicating regular engagement in physical activities may be protective against cognitive decline and dementia in late life. Indeed, the link between PA and brain health may be different at each stage of life from childhood, mid-life and late life...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28566449/the-role-of-perivascular-innervation-and-neurally-mediated-vasoreactivity-in-the-pathophysiology-of-alzheimer-s-disease
#9
REVIEW
Shereen Nizari, Ignacio A Romero, Cheryl A Hawkes
Neuronal death is a hallmark of Alzheimer's disease (AD) and considerable work has been done to understand how the loss of interconnectivity between neurons contributes to the associated dementia. Often overlooked however, is how the loss of neuronal innervation of blood vessels, termed perivascular innervation, may also contribute to the pathogenesis of AD. There is now considerable evidence supporting a crucial role for the neurovascular unit (NVU) in mediating the clearance of the β-amyloid (Aβ) peptide, one of the main pathological constituents of AD, from the brain...
June 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28548940/microbiota-gut-brain-axis-and-the-central-nervous-system
#10
REVIEW
Xiqun Zhu, Yong Han, Jing Du, Renzhong Liu, Ketao Jin, Wei Yi
The gut and brain form the gut-brain axis through bidirectional nervous, endocrine, and immune communications. Changes in one of the organs will affect the other organs. Disorders in the composition and quantity of gut microorganisms can affect both the enteric nervous system and the central nervous system (CNS), thereby indicating the existence of a microbiota-gut-brain axis. Due to the intricate interactions between the gut and the brain, gut symbiotic microorganisms are closely associated with various CNS diseases, such as Parkinson's disease, Alzheimer's disease, schizophrenia, and multiple sclerosis...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28534735/the-use-of-the-gaps-in-noise-test-as-an-index-of-the-enhanced-left-temporal-cortical-thinning-associated-with-the-transition-between-mild-cognitive-impairment-and-alzheimer-s-disease
#11
Vasiliki Vivian Iliadou, Doris-Eva Bamiou, Christos Sidiras, Nikolaos P Moschopoulos, Magda Tsolaki, Ioannis Nimatoudis, Gail D Chermak
BACKGROUND: The known link between auditory perception and cognition is often overlooked when testing for cognition. PURPOSE: To evaluate auditory perception in a group of older adults diagnosed with mild cognitive impairment (MCI). RESEARCH DESIGN: A cross-sectional study of auditory perception. STUDY SAMPLE: Adults with MCI and adults with no documented cognitive issues and matched hearing sensitivity and age. DATA COLLECTION: Auditory perception was evaluated in both groups, assessing for hearing sensitivity, speech in babble (SinB), and temporal resolution...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28533046/-are-language-disorders-in-alzheimer-s-disease-simply-aphasia
#12
REVIEW
Cyril Hazif-Thomas, Philippe Thomas
Alzheimer's disease is accompanied by gradual aphasia, becoming more severe when the cognitive disorders are more marked. However, the quality of care provided to the patient can modulate the evolution of these language difficulties. Aphasia is linked to a human communication deficiency and can be limited by taking into account the phatic function of language to keep the channels of communication open.
May 2017: Soins. Gérontologie
https://www.readbyqxmd.com/read/28532225/pneumonia-in-nursing-home-patients-with-advanced-dementia-decisions-intravenous-rehydration-therapy-and-discomfort
#13
Jenny T van der Steen, Paola Di Giulio, Fabrizio Giunco, Massimo Monti, Simona Gentile, Daniele Villani, Silvia Finetti, Francesca Pettenati, Lorena Charrier, Franco Toscani
BACKGROUND: Comfort may be an appropriate goal in advanced dementia. Longitudinal studies on physician decision-making and discomfort assessed by direct observation are rare, and intravenous rehydration therapy is controversial. METHODS: To assess treatment decisions and discomfort in patients with advanced dementia and pneumonia and to compare by intravenous rehydration therapy, we used data from the observational multicenter Italian End of Life Observatory-Prospective Study On DEmentia patients Care...
January 1, 2017: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/28527957/streptozotocin-alters-glucose-transport-connexin-expression-and-endoplasmic-reticulum-functions-in-neurons-and-astrocytes
#14
Joyshree Biswas, Sonam Gupta, Dinesh Kumar Verma, Sarika Singh
The study was undertaken to explore the cell-specific streptozotocin (STZ)-induced mechanistic alterations. STZ-induced rodent model is a well-established experimental model of Alzheimer's disease (AD) and in our previous studies we have established it as an in vitro screening model of AD by employing N2A neuronal cells. Therefore, STZ was selected in the present study to understand the STZ-induced cell-specific alterations by utilizing neuronal N2A and astrocytes C6 cells. Both neuronal and astrocyte cells were treated with STZ at 10, 50, 100 and 1000μM concentrations for 48h...
May 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28510506/signaling-at-the-crossroads-matrix-derived-proteoglycan-and-reactive-oxygen-species-signaling
#15
Madalina-Viviana Nastase, Andrea Janicova, Malgorzata Wygrecka, Liliana Schaefer
SIGNIFICANCE: Proteoglycans (PGs), besides their structural contribution, have emerged as dynamic components that mediate a multitude of cellular events. The various roles of PGs are attributed to their structure, spatial localization, and ability to act as ligands and receptors. Reactive oxygen species (ROS) are small mediators, which are generated in physiological and pathological conditions. Besides their reactivity and ability to induce oxidative stress, a growing body of data suggests that ROS signaling is more relevant than direct radical damage in development of human pathologies...
May 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28503675/costs-of-a-staff-communication-intervention-to-reduce-dementia-behaviors-in-nursing-home-care
#16
Kristine N Williams, Padmaja Ayyagari, Yelena Perkhounkova, Marjorie J Bott, Ruth Herman, Ann Bossen
CONTEXT: Persons with Alzheimer's disease and other dementias experience behavioral symptoms that frequently result in nursing home (NH) placement. Managing behavioral symptoms in the NH increases staff time required to complete care, and adds to staff stress and turnover, with estimated cost increases of 30%. The Changing Talk to Reduce Resistivenes to Dementia Care (CHAT) study found that an intervention that improved staff communication by reducing elderspeak led to reduced behavioral symptoms of dementia or resistiveness to care (RTC)...
2017: Journal of Nursing Home Research Sciences
https://www.readbyqxmd.com/read/28482505/sirna-nanoparticle-conjugate-in-gene-silencing-a-future-cure-to-deadly-diseases
#17
REVIEW
Rituparna Acharya, Suman Saha, Sayantan Ray, Sugata Hazra, Manoj K Mitra, Jui Chakraborty
Alzheimers, cancer, acquired immune deficiency syndrome (AIDS) are considered to be some of the most deadly diseases of the 21st century on account of their severity and rapid increase in the number of affected population and with scarce cases of recovery, they still remain a troubling paradox. Specifically, with millions of cancer patients worldwide and lack of proper cure for the same, understanding the deadly disease at the molecular level and planning a therapeutic strategy in the same line is the need of the hour...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28466655/pain-interference-and-depressive-symptoms-in-communicative-people-with-alzheimer-s-disease-a-pilot-study
#18
Jinjiao Wang, Mary S Dietrich, Sandra F Simmons, Ronald L Cowan, Todd B Monroe
OBJECTIVES: To examine pain interference in verbally communicative older adults with mild to moderate Alzheimer's disease (AD) and to examine the association of pain interference with cognitive function and depressive symptoms. METHOD: For this pilot study, we used a cross-sectional design to examine pain interference (Brief Pain Inventory-Short Form), cognitive function (Mini-Mental State Exam), and depressive symptoms (15-item Geriatric Depression Scale) in 52 older (≥65) communicative adults with AD who reported being free from chronic pain requiring daily analgesics...
May 3, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28461971/cholesterol-in-the-pathogenesis-of-alzheimer-s-parkinson-s-diseases-and-autism-link-to-synaptic-dysfunction
#19
A M Petrov, M R Kasimov, A L Zefirov
In our previous review, we described brain cholesterol metabolism in control conditions and in the case of some rare neurological pathologies linked to defects in the genes which are directly involved in the synthesis and/or traffic of cholesterol. Here, we have analyzed disruptions in cholesterol homeostasis in widespread neurodegenerative diseases (Alzheimer's and Parkinson's diseases) and autism spectrum disorders. We particularly focused on the synaptic dysfunctions that could arise from changes in both membrane cholesterol availability and oxysterol production...
January 2017: Acta Naturae
https://www.readbyqxmd.com/read/28447569/a-new-treatment-strategy-for-parkinson-s-disease-through-the-gut-brain-axis-the-glucagon-like-peptide-1-receptor-pathway
#20
Dong Seok Kim, Ho-Il Choi, Yun Wang, Yu Luo, Barry J Hoffer, Nigel H Greig
Molecular communications in the gut-brain axis, between the central nervous system and the gastrointestinal tract, arecritical for maintaining healthy brain function particularly in aging. Epidemiological analyses indicate type 2 diabetes mellitus (T2DM) is a risk factor for neurodegenerative disorders, including Alzheimer's disease (AD) and Parkinson's diseases (PD) for which aging shows a major correlative association. Common pathophysiological features exist between T2DM, AD and PD, including oxidative stress, inflammation, insulin resistance, abnormal protein processing and cognitive decline, and suggest that effective drugs for T2DM that positively impact the gut-brain axis could provide an effective treatment option for neurodegenerative diseases...
April 26, 2017: Cell Transplantation
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