Reversal of age-related cognitive impairments in mice by an extremely low dose of tetrahydrocannabinol

2018 ◽  
Vol 61 ◽  
pp. 177-186 ◽  
Author(s):  
Yosef Sarne ◽  
Roni Toledano ◽  
Lital Rachmany ◽  
Effrat Sasson ◽  
Ravid Doron
Keyword(s):  
Low Dose ◽  
Cognitive Impairments ◽  
Age Related

Low-dose aspirin prevents age-related endothelial dysfunction in a mouse model of physiological aging

2008 ◽  
Vol 294 (4) ◽  
pp. H1562-H1570 ◽  
Author(s):  
Hélène Bulckaen ◽  
Gaétan Prévost ◽  
Eric Boulanger ◽  
Géraldine Robitaille ◽  
Valérie Roquet ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Dysfunction ◽  
Protective Effect ◽  
Structural Changes ◽  
Low Dose ◽  
Age Groups ◽  
Dose Aspirin ◽  
Age Related ◽  
Low Dose Aspirin ◽  
Old Mice

The age-related impairment of endothelium-dependent vasodilatation contributes to increased cardiovascular risk in the elderly. For primary and secondary prevention, aspirin can reduce the incidence of cardiovascular events in this patient population. The present work evaluated the effect of low-dose aspirin on age-related endothelial dysfunction in C57B/J6 aging mice and investigated its protective antioxidative effect. Age-related endothelial dysfunction was assessed by the response to acetylcholine of phenylephrine-induced precontracted aortic segments isolated from 12-, 36-, 60-, and 84-wk-old mice. The effect of low-dose aspirin was examined in mice presenting a decrease in endothelial-dependent relaxation (EDR). The effects of age and aspirin treatment on structural changes were determined in mouse aortic sections. The effect of aspirin on the oxidative stress markers malondialdehyde and 8-hydroxy-2′-deoxyguanosine (8-OhdG) was also quantified. Compared with that of 12-wk-old mice, the EDR was significantly reduced in 60- and 84-wk-old mice ( P < 0.05); 68-wk-old mice treated with aspirin displayed a higher EDR compared with control mice of the same age (83.9 ± 4 vs. 66.3 ± 5%; P < 0.05). Aspirin treatment decreased 8-OHdG levels ( P < 0.05), but no significant effect on intima/media thickness ratio was observed. The protective effect of aspirin was not observed when treatment was initiated in older mice (96 wk of age). It was found that low-dose aspirin is able to prevent age-related endothelial dysfunction in aging mice. However, the absence of this effect in the older age groups demonstrates that treatment should be initiated early on. The underlying mechanism may involve the protective effect of aspirin against oxidative stress.

scholarly journals Low-Dose Ionizing Radiation Therapy: A Novel Treatment for Post-Concussion Syndrome?

Dose-Response ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 155932582110443
Author(s):  
Paul A. Oakley
Keyword(s):  
Oxidative Stress ◽  
Radiation Therapy ◽  
Ionizing Radiation ◽  
Neurodegenerative Disease ◽  
Low Dose ◽  
Post Injury ◽  
Post Concussion Syndrome ◽  
Persistent Symptoms ◽  
Age Related ◽  
Alzhiemer's Disease

A subset of victims who experience concussion suffer from persistent symptoms spanning months to years post-injury, termed post-concussion syndrome (PCS). Problematically, there is lack of consensus for the treatment of PCS. Concussion injury involves a neurometabolic cascade leading to oxidative stress and neuroinflammation which parallels the oxidative stress loading occuring from age-related neurodegenerative conditions. Historical and recent evidence has emerged showing the efficacy of low-dose radiation therapy for many human diseases including neurodegenerative diseases such as Alzhiemer’s disease (AD). Due to the pathognomonic similarities of oxidative stress and neuroinflammation involved in PCS and neurodegenerative disease, treatments that prove successful for neurodegenerative disease may prove successful for PCS. Recently, low-dose ionizing radiation therapy (LDIR) has been documented to show a reversal of many symptoms in AD, including improved cognition. LDIR is thought to induce a switching from proinflammatory M1 phenotype to an anti-inflammatory M2 phenotype. In other words, a continual upregulation of the adaptive protection systems via LDIR induces health enhancement. It is hypothesized LDIR treatment for PCS would mimic that seen from early evidence of LDIR treatment of AD patients who suffer from similar oxidative stress loading. We propose the application of LDIR is a promising, untapped treatment for PCS.

scholarly journals Impairments in Brain Bioenergetics in Aging and Tau Pathology: A Chicken and Egg Situation?

Cells ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2531
Author(s):  
Amandine Grimm
Keyword(s):  
Brain Metabolism ◽  
Brain Aging ◽  
Cognitive Impairments ◽  
Tau Phosphorylation ◽  
The Body ◽  
Tau Pathology ◽  
Age Related ◽  
Energy Consuming ◽  
Effects Of Aging ◽  
The Brain

The brain is the most energy-consuming organ of the body and impairments in brain energy metabolism will affect neuronal functionality and viability. Brain aging is marked by defects in energetic metabolism. Abnormal tau protein is a hallmark of tauopathies, including Alzheimer’s disease (AD). Pathological tau was shown to induce bioenergetic impairments by affecting mitochondrial function. Although it is now clear that mutations in the tau-coding gene lead to tau pathology, the causes of abnormal tau phosphorylation and aggregation in non-familial tauopathies, such as sporadic AD, remain elusive. Strikingly, both tau pathology and brain hypometabolism correlate with cognitive impairments in AD. The aim of this review is to discuss the link between age-related decrease in brain metabolism and tau pathology. In particular, the following points will be discussed: (i) the common bioenergetic features observed during brain aging and tauopathies; (ii) how age-related bioenergetic defects affect tau pathology; (iii) the influence of lifestyle factors known to modulate brain bioenergetics on tau pathology. The findings compiled here suggest that age-related bioenergetic defects may trigger abnormal tau phosphorylation/aggregation and cognitive impairments after passing a pathological threshold. Understanding the effects of aging on brain metabolism may therefore help to identify disease-modifying strategies against tau-induced neurodegeneration.

scholarly journals Therapy of bronchial asthma in children: age-related aspects

2021 ◽  
pp. 113-122
Author(s):  
Natalia A. Geppe ◽  
Elena G. Kondiurina ◽  
Vera A. Reviakina ◽  
Aleksandr B. Malakhov ◽  
Natalia G. Kolosova
Keyword(s):  
Bronchial Asthma ◽  
Low Dose ◽  
Clinical Symptoms ◽  
Bronchial Obstruction ◽  
Shortness Of Breath ◽  
Treatment And Prevention ◽  
Age Related ◽  
Asthma In Children ◽  
Global Initiative ◽  
Effective Drugs

Bronchial asthma (BA) is a disease that is one of the most frequent chronic diseases of childhood. Characteristic clinical symptoms of BA are wheezing, cough, difficulty in breathing, shortness of breath and, of course, recurrent episodes of bronchial obstruction. They require mandatory clarification of family and individual allergoanamnesis, assessment of symptoms, differential diagnosis with other diseases that may occur with BA. The Global Initiative for the Treatment and Prevention of Bronchial Asthma (GINA 20202021) preserves and develops the ageappropriate approach to verification of diagnosis and therapy selection, which is supported in the Russian National Program "Bronchial Asthma in Children" and in the Russian clinical guidelines "Bronchial Asthma 2021 When the diagnosis of BA is made, therapy should be started as early as possible. Administration of low-dose inhaled glucocorticosteroids (IGCS) immediately after the diagnosis allows not only to control the inflammatory process, which is the basis of BA, but also to reduce the severity of exacerbations. IGCS are the most effective drugs for children of any age, they ensure control of the disease and reduce the risk of AD exacerbations.

Preventing Alzheimer's Wandering

2019 ◽  
pp. 77-89
Author(s):  
Sara Paiva ◽  
Rui Peleja ◽  
Jorge Cunha ◽  
Carlos Abreu
Keyword(s):  
Quality Of Life ◽  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Quality Of Care ◽  
Cognitive Impairments ◽  
The Elderly ◽  
Strong Impact ◽  
Brain Disorder ◽  
Age Related

With increased life expectancy, the incidence of age-related cognitive impairments, faced by the elderly and older generations, is growing. Among the population with cognitive impairments, those that suffer from Alzheimer's disease are the most common. The Alzheimer's disease is a chronic degenerative brain disorder that is characterised by a failure of memory and, in some instances, by disorders in language, perception and planning. As a consequence of the progressive damages imposed by the illness, patients will increasingly seek and need assistance. This paper presents a tool to aid the development and managing of caregiving communities, comprising immediate family members, relatives, neighbours and healthcare professionals, to assist patients with Alzheimer's disease. Such communities could have a strong impact on the quality of care provided to the patients. At the same time, it is hoped that involving communities will significantly improve the quality of life of Alzheimer's patients and their families while reducing the costs related to the care provided.

Does consciousness matter?

2019 ◽  
pp. 165-188
Author(s):  
Peter Carruthers
Keyword(s):  
Moral Status ◽  
Cognitive Impairments ◽  
Phenomenal Consciousness ◽  
Human Infants ◽  
Age Related ◽  
Moral Status Of Animals

Chapter 7 concluded that there is no fact of the matter concerning phenomenal consciousness in animals, while also arguing that this conclusion is of no importance for science. The present chapter inquires whether it is nevertheless important in other ways, specifically for our ethical treatment of animals, arguing that it is not. But a challenge remains for those who theorize about the moral status of animals: they need to prize the foundations of their theories apart from assumptions about consciousness. The chapter also considers what should be said about the phenomenally conscious status of humans who, like animals, only partially share a full global-broadcasting architecture, such as human infants and people suffering from age-related cognitive impairments.

scholarly journals Jumping Stand Apparatus Reveals Rapidly Specific Age-Related Cognitive Impairments in Mouse Lemur Primates

PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0146238 ◽  
Author(s):  
Jean-Luc Picq ◽  
Nicolas Villain ◽  
Charlotte Gary ◽  
Fabien Pifferi ◽  
Marc Dhenain
Keyword(s):  
Cognitive Impairments ◽  
Mouse Lemur ◽  
Age Related
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