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Malnutrition is becoming a more prominent health problem, with an increasing number of elderly CKD patients being put on dialysis. In addition, the presence of inflammation, sarcopenia/frailty, diabetes, and CVD is a definite and independent risk factor associated with higher mortality in this population. Although the restriction of protein intake has been recommended to protect eGFR decline, hyperphosphatemia, and hyperkalemia in CKD patients, it might accelerate the loss of skeletal muscle and adipose mass, leading to a poor prognosis. Therefore, flexible responses are considered regarding whether protein restriction should be continued or loosened in pre-dialysis CKD patients. In undernourished elderly patients undergoing hemodialysis, sufficient calorie/protein intake is necessary to counteract the development of sarcopenia/frailty. It is expected that the application of new drugs including phosphate binders and potassium chelators may achieve both a high enough intake and balanced levels of phosphate and potassium. Furthermore, the improvement of deficient micronutrients and poor appetite is also necessary. Comprehensive care is essential for the wellbeing of elderly patients undergoing hemodialysis. The topicof this Special Issue is “Extension of Healthy Life Span of Dialysis Patients in the Era of a 100-Year Life”.

hypertension --- body weight --- mortality --- sodium --- dialysis --- malnutrition --- protein energy wasting (PEW) --- sarcopenia --- carnitine --- carnitine deficiency --- end-stage kidney disease --- peritoneal dialysis --- hemodialysis --- frailty --- protein energy wasting --- hypercatabolism --- renal rehabilitation --- exercise --- sarcopenia and frailty --- nutritional support --- protein synthesis --- muscle physiology --- physical activity --- exercise tolerance --- quality of life --- skeletal muscle --- aging --- chronic kidney disease --- diabetes --- CKD-MBD --- FGF23 --- aKlotho --- phosphate-binder --- zinc --- cardiovascular disease --- potassium --- potassium excretion --- blood pressure --- salt --- CKD --- fat mass --- visceral fat --- subcutaneous fat --- nutrition --- body mass index --- obesity paradox --- magnetic resonance imaging --- diffusion tensor imaging --- arterial spin labeling --- blood oxygenation level-dependent --- nutritional status --- dialysis patients --- clinical malnutrition --- older individuals --- n/a

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Creatine plays a critical role in cellular metabolism, primarily by binding with phosphate to form phosphocreatine (PCr) as well as shuttling high-energy phosphate compounds in and out of the mitochondria for metabolism. Increasing the dietary availability of creatine increases the tissue and cellular availability of PCr, and thereby enhances the ability to maintain high-energy states during intense exercise. For this reason, creatine monohydrate has been extensively studied as an ergogenic aid for exercise, training, and sport. Limitations in the ability to synthesize creatine and transport and/or store dietary creatine can impair metabolism and is a contributor to several disease states. Additionally, creatine provides an important source of energy during metabolically stressed states, particularly when oxygen availability is limited. Thus, researchers have assessed the role of creatine supplementation on health throughout the lifespan, as well as whether creatine availability may improve disease management and/or therapeutic outcomes. This book provides a comprehensive overview of scientific and medical evidence related to creatine's role in metabolism, health throughout the lifespan, and our current understanding of how creatine can promote brain, heart, vascular and immune health; reduce the severity of musculoskeletal and brain injury; and may provide therapeutic benefits in glucose management and diabetes, cancer therapy, inflammatory bowel disease, and post-viral fatigue.

Research & information: general --- Biology, life sciences --- Food & society --- ergogenic aids --- cellular metabolism --- phosphagens --- sarcopenia --- cognition --- diabetes --- creatine synthesis deficiencies --- concussion --- traumatic brain injury --- spinal cord injury --- muscle atrophy --- rehabilitation --- pregnancy --- immunity --- anti-inflammatory --- antioxidant --- anticancer --- creatine --- nutritional supplements --- fertility --- newborn --- development --- brain injury --- post-viral fatigue syndrome --- chronic fatigue syndrome --- GAA --- creatine kinase --- dietary supplements --- exercise --- skeletal muscle --- glycemic control --- type 2 diabetes mellitus --- phosphorylcreatine --- dietary supplement --- ergogenic aid --- youth --- athletes --- osteoporosis --- osteosarcopenia --- frailty --- cachexia --- innate immunity --- adaptive immunity --- inflammation --- macrophage polarization --- cytotoxic T cells --- toll-like receptors --- vascular pathology --- cardiovascular disease --- oxidative stress --- vascular health --- female --- menstrual cycle --- hormones --- exercise performance --- menopause --- mood --- children --- height --- BMI-for-age --- stature-for-age --- growth --- phosphocreatine --- creatine transporter --- supplementation --- treatment --- heart --- heart failure --- ischemia --- myocardial infarction --- anthracycline --- cardiac toxicity --- energy metabolism --- cell survival --- bioinformatics --- systems biology --- cellular allostasis --- dynamic biosensor --- pleiotropic effects of creatine (Cr) supplementation --- inflammatory bowel diseases (IBD) --- ulcerative colitis --- Crohn’s disease --- creatine kinase (CK) --- phosphocreatine (PCr) --- creatine transporter (CrT) --- intestinal epithelial cell protection --- intestinal tissue protection --- creatine perfusion --- organ transplantation --- Adenosine mono-phosphate (AMP) --- activated protein kinase (AMPK) --- liver kinase B1 (LKB1) --- mitochondrial permeability transition pore (mPTP) --- reactive oxygen species (ROS) --- glucose transporter (GLUT) --- T cell antitumor immunity --- metabolic regulator --- cancer immunotherapy --- supplements --- muscle damage --- recovery --- immobilization --- atrophy --- muscular dystrophy --- amyotrophic lateral sclerosis --- Parkinson’s Disease --- cardiopulmonary disease --- mitochondrial cytopathy --- hypertrophy --- athletic performance --- weightlifting --- resistance exercise --- training --- muscular power --- muscular adaptation --- muscle fatigue --- adipose tissue --- muscle strength --- physiological adaptation --- mitochondria --- thermogenesis --- MAP kinase signaling system --- sodium-chloride-dependent neurotransmitter symporters --- signal transduction --- intradialytic creatine supplementation --- hemodialysis --- muscle --- protein energy wasting --- clinical trial --- muscle weakness --- chronic fatigue --- cognitive impairment --- depression --- anemia --- resistance training --- sports nutrition --- strength --- toxicity --- methylation --- hyperhomocysteinemia --- neuromodulation --- MCDA --- mitochondriopathia --- cardiac infarction --- long COVID --- hypoxia --- stroke --- neurodegenerative diseases --- noncommunicable disease --- adenosine 5′-monopnophosphate-activated protein kinase --- anthracyclines --- creatine supplementation --- cardiac signaling --- cardiotoxicity --- doxorubicin --- soy --- vegetarian/vegan diet --- amino acids --- dietary ingredients --- performance --- ergogenic aids --- cellular metabolism --- phosphagens --- sarcopenia --- cognition --- diabetes --- creatine synthesis deficiencies --- concussion --- traumatic brain injury --- spinal cord injury --- muscle atrophy --- rehabilitation --- pregnancy --- immunity --- anti-inflammatory --- antioxidant --- anticancer --- creatine --- nutritional supplements --- fertility --- newborn --- development --- brain injury --- post-viral fatigue syndrome --- chronic fatigue syndrome --- GAA --- creatine kinase --- dietary supplements --- exercise --- skeletal muscle --- glycemic control --- type 2 diabetes mellitus --- phosphorylcreatine --- dietary supplement --- ergogenic aid --- youth --- athletes --- osteoporosis --- osteosarcopenia --- frailty --- cachexia --- innate immunity --- adaptive immunity --- inflammation --- macrophage polarization --- cytotoxic T cells --- toll-like receptors --- vascular pathology --- cardiovascular disease --- oxidative stress --- vascular health --- female --- menstrual cycle --- hormones --- exercise performance --- menopause --- mood --- children --- height --- BMI-for-age --- stature-for-age --- growth --- phosphocreatine --- creatine transporter --- supplementation --- treatment --- heart --- heart failure --- ischemia --- myocardial infarction --- anthracycline --- cardiac toxicity --- energy metabolism --- cell survival --- bioinformatics --- systems biology --- cellular allostasis --- dynamic biosensor --- pleiotropic effects of creatine (Cr) supplementation --- inflammatory bowel diseases (IBD) --- ulcerative colitis --- Crohn’s disease --- creatine kinase (CK) --- phosphocreatine (PCr) --- creatine transporter (CrT) --- intestinal epithelial cell protection --- intestinal tissue protection --- creatine perfusion --- organ transplantation --- Adenosine mono-phosphate (AMP) --- activated protein kinase (AMPK) --- liver kinase B1 (LKB1) --- mitochondrial permeability transition pore (mPTP) --- reactive oxygen species (ROS) --- glucose transporter (GLUT) --- T cell antitumor immunity --- metabolic regulator --- cancer immunotherapy --- supplements --- muscle damage --- recovery --- immobilization --- atrophy --- muscular dystrophy --- amyotrophic lateral sclerosis --- Parkinson’s Disease --- cardiopulmonary disease --- mitochondrial cytopathy --- hypertrophy --- athletic performance --- weightlifting --- resistance exercise --- training --- muscular power --- muscular adaptation --- muscle fatigue --- adipose tissue --- muscle strength --- physiological adaptation --- mitochondria --- thermogenesis --- MAP kinase signaling system --- sodium-chloride-dependent neurotransmitter symporters --- signal transduction --- intradialytic creatine supplementation --- hemodialysis --- muscle --- protein energy wasting --- clinical trial --- muscle weakness --- chronic fatigue --- cognitive impairment --- depression --- anemia --- resistance training --- sports nutrition --- strength --- toxicity --- methylation --- hyperhomocysteinemia --- neuromodulation --- MCDA --- mitochondriopathia --- cardiac infarction --- long COVID --- hypoxia --- stroke --- neurodegenerative diseases --- noncommunicable disease --- adenosine 5′-monopnophosphate-activated protein kinase --- anthracyclines --- creatine supplementation --- cardiac signaling --- cardiotoxicity --- doxorubicin --- soy --- vegetarian/vegan diet --- amino acids --- dietary ingredients --- performance