Curcumin attenuates cytoplasmic/endoplasmic reticulum stress, apoptosis and cholinergic dysfunction in diabetic rat hippocampus

AbstractDiabetes mellitus (DM) is associated with the increased risk of the central nervous system complications as cerebrovascular disease, impaired cognition, dementia and neurodegeneration. Curcumin is a polyphenol with anti-oxidant, anti-inflammatory, anti-hyperlipidemic, and anti-cancer effects. Therefore, the present study was aimed to focus on the mechanistic insights of diabetes-induced hippocampal neurodegeneration in addition to shedding the light on the modulatory effect of curcumin. Twenty-eight male Wistar rats were randomly divided into four groups. Type I DM was induced by a single intra-peritoneal injection of streptozotocin (STZ) (65  mg/kg b.w.). Curcumin (100 mg/kg b.w.) was given to the diabetic group after the induction and for eight weeks. Hippocampal glucose-regulated protein 78 (GRP78), activating transcription factor 4 (ATF-4), Bcl2 and choline acetyl transferase (ChAT) genes expression were assessed. Heat shock protei n 70 (HSP70), Bcl-2-Associated X protein (Bax), Interferon-γ (INF-γ) and CCAAT-enhancer-binding protein homologous protein (CHOP) levels in the hippocampus were immunoassayed, in addition to the assessment of glycemic and redox status. Curcumin significantly improved blood glucose level, redox sta tus, cellular stress, and decreased INF-γ and Bax levels, down-regulated GRP78 and ATF-4 expression, meanwhile, up-regulated Bcl2 and ChAT expression in hippocampus. Histological findings proved the biochemical and ...
Source: Metabolic Brain Disease - Category: Neurology Source Type: research

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Evidence strongly suggests that the global faltering of mitochondrial function throughout the body with advancing age has a lot to do with a decline in the effectiveness of mitophagy. Mitochondria are the power plants of the cell, a herd of hundreds swarming and replicating like bacteria in every cell to produce the chemical energy store molecule ATP. Mitophagy is the specialized form of autophagy that destroys worn and damaged mitochondria, recycling their component parts. Without it, cells would become overtaken by broken, malfunctioning mitochondria. Mitochondrial dysfunction leads to too little ATP, but also higher lev...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
Fight Aging! publishes news and commentary relevant to the goal of ending all age-related disease, to be achieved by bringing the mechanisms of aging under the control of modern medicine. This weekly newsletter is sent to thousands of interested subscribers. To subscribe or unsubscribe from the newsletter, please visit: https://www.fightaging.org/newsletter/ Longevity Industry Consulting Services Reason, the founder of Fight Aging! and Repair Biotechnologies, offers strategic consulting services to investors, entrepreneurs, and others interested in the longevity industry and its complexities. To find out m...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Authors: Severinsen MCK, Pedersen BK Abstract Physical activity decreases the risk of a network of diseases and exercise may be prescribed as medicine for lifestyle-related disorders such as type 2 diabetes, dementia, cardiovascular diseases and cancer. During the past couple of decades, it has been apparent that skeletal muscle works as an endocrine organ, which can produce and secrete hundreds of myokines that exert their effects in either autocrine, paracrine or endocrine manners. Recent advances show that skeletal muscle produces myokines in response to exercise, which allow for crosstalk between the muscle and...
Source: Endocrine Reviews - Category: Endocrinology Tags: Endocr Rev Source Type: research
In this study, we found that older nematodes have higher ROS levels. Interestingly, after hydrogen treatment, the ROS levels were significantly decreased, and hydrogen could significantly extend the lifespans of the N2, sod-3 and sod-5 mutant strains, by approximately 22.7%, 9.5%, and 8.7%, respectively. In addition, aging is regulated by a variety of pathways, such as the insulin signaling pathway, the rapamycin target signaling pathway, and the caloric restriction pathway. However, our results showed that the lifespans of the daf-2 and daf-16 strains, in which these pathways are upregulated, were not affected afte...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In conclusion, our study demonstrated that Nrf2 deficiency promoted the increasing trend of autophagy during aging in skeletal muscle. Nrf2 deficiency and increasing age may cause excessive autophagy in skeletal muscle, which can be a potential mechanism for the development of sarcopenia. To What Degree is Chondrocyte Hypertrophy in Osteoarthritis Due to Cellular Senescence? https://www.fightaging.org/archives/2020/04/to-what-degree-is-chondrocyte-hypertrophy-in-osteoarthritis-due-to-cellular-senescence/ Senescent cells are large. They do not replicate, that function is disabled, but it is as if they go ...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
This study delves into the mechanisms by which a short period of fasting can accelerate wound healing. Fasting triggers many of the same cellular stress responses, such as upregulated autophagy, as occur during the practice of calorie restriction. It isn't exactly the same, however, so it is always worth asking whether any specific biochemistry observed in either case does in fact occur in both situations. In particular, the period of refeeding following fasting appears to have beneficial effects that are distinct from those that occur while food is restricted. Multiple forms of therapeutic fasting have been repor...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
We report a new class of natural-product-inspired covalent inhibitors of telomerase that target the catalytic active site. Age-Related Epigenetic Changes that Suppress Mitochondrial Function https://www.fightaging.org/archives/2020/03/age-related-epigenetic-changes-that-suppress-mitochondrial-function/ Today's open access research reports on two specific epigenetic changes observed in old individuals that act to reduce mitochondrial function. This joins an existing list of genes for which expression changes are known to impact mitochondrial function with age. A herd of hundreds of mitochondria are found ...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
You may have already heard the term “insulin resistance,” as it has been widely discussed by doctors and the media. But did you know that you can reduce or reverse it in the vast majority of people? Insulin resistance, i.e., the inability of the body’s cells, especially liver, muscle, and brain, to respond to insulin and allow blood sugar to enter cells, drives numerous abnormal health conditions including type 2 diabetes, hypertension, coronary heart disease, fatty liver, Alzheimer’s dementia, and cancer. It is therefore a driving force behind so many modern and common chronic health conditions. Yo...
Source: Wheat Belly Blog - Category: Cardiology Authors: Tags: Open can belly fat can insulin resistance be reversed lose weight reduce belly fat reverse inflammation visceral fat wheat belly Source Type: blogs
In this study, we intravenously administrated the young mitochondria into aged mice to evaluate whether energy production increase in aged tissues or age-related behaviors improved after the mitochondrial transplantation. The results showed that heterozygous mitochondrial DNA of both aged and young mouse coexisted in tissues of aged mice after mitochondrial administration, and meanwhile, ATP content in tissues increased while reactive oxygen species (ROS) level reduced. Besides, the mitotherapy significantly improved cognitive and motor performance of aged mice. Our study, at the first report in aged animals, not only prov...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Researchers here apply modern genomics approaches to assessing the ability of calorie restriction to slow the progression of aging. As is usually the case, beyond greater understanding of the complexities of the metabolic response to calorie restriction, the goal is to find potential points of intervention that have as yet gone unremarked. Single genes where expression might be changed in order to mimic some fraction of the response to a lower calorie intake. Taken more broadly, exploration that might lead to the development of novel calorie restriction mimetics represents a sizable fraction of all present work on interven...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
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