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https://www.readbyqxmd.com/read/29163135/neuroprotective-effect-of-ligustilide-through-induction-of-%C3%AE-secretase-processing-of-both-app-and-klotho-in-a-mouse-model-of-alzheimer-s-disease
#1
Xi Kuang, Hong-Jing Zhou, Amy H Thorne, Xi-Nan Chen, Lin-Jiao Li, Jun-Rong Du
Emerging evidence suggests that alpha-processing single transmembrane proteins, amyloid precursor protein (APP) and anti-aging protein Klotho, are likely to be involved in the progression of Alzheimer's disease (AD). The natural phthalide Ligustilide (LIG) has been demonstrated to protect against aging- and amyloid-β (Aβ)-induced brain dysfunction in animal models. The present study is to investigate the effects of LIG on cognitive deficits and metabolism of both APP and Klotho and its underlying mechanism in AD double-transgenic (APP/PS1) mice and cultured human cells...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29154273/association-between-%C3%AE-klotho-and-deep-white-matter-lesions-in-the-brain-a-pilot-case-control-study-using-brain-mri
#2
Nagato Kuriyama, Etsuko Ozaki, Toshiki Mizuno, Masafumi Ihara, Shigeto Mizuno, Teruhide Koyama, Daisuke Matsui, Isao Watanabe, Kentaro Akazawa, Kazuo Takeda, Akihiro Takada, Masaaki Inaba, Shinsuke Yamada, Koka Motoyama, Wakiko Takeshita, Komei Iwai, Kanae Hashiguchi, Daiki Kobayashi, Masaki Kondo, Aiko Tamura, Kei Yamada, Masanori Nakagawa, Yoshiyuki Watanabe
BACKGROUND: The anti-aging protein, α-Klotho, may be involved in cognitive decline and has potential as a surrogate marker that reflects dementia. However, the role of α-Klotho in the brain has not been sufficiently investigated. OBJECTIVE: Here, we investigated the association between α-Klotho and cognitive decline that is associated with cerebral deep white matter lesions (DWMLs). METHODS: Two hundred-eighty participants (187 males and 93 females, mean age: 70...
November 16, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29146232/parathyroidectomy-in-patients-with-chronic-kidney-disease-impacts-of-different-techniques-on-the-biochemical-and-clinical-evolution-of-secondary-hyperparathyroidism
#3
Roxana de Fátima Camelo Albuquerque, Cinthia Esbrile Moraes Carbonara, Rita de Cássia T Martin, Luciene Machado Dos Reis, Climério Pereira do Nascimento, Sérgio Samir Arap, Rosa M A Moysés, Vanda Jorgetti, Fábio L M Montenegro, Rodrigo Bueno de Oliveira
BACKGROUND: Parathyroidectomy (PTx) decreases the mortality rate of refractory secondary hyperparathyroidism (rSHP) due to chronic kidney disease. A consensus regarding which techniques of PTx are associated with better outcomes is not available. The aims of this study are to evaluate the clinical and laboratory evolution of 49 hemodialysis patients with rSHP who underwent PTx using different techniques. METHODS: Patients underwent subtotal PTx (sub-PTx) or total PTx with autotransplantation (AT) of 45 (PTx-AT45) or 90 parathyroid fragments (PTx-AT90) and were followed for 12 months...
November 13, 2017: Surgery
https://www.readbyqxmd.com/read/29142604/klotho-expression-is-correlated-to-molecules-associated-with-epithelial-mesenchymal-transition-in-lung-squamous-cell-carcinoma
#4
Takayuki Ibi, Jitsuo Usuda, Tatsuya Inoue, Akira Sato, Kyoshiro Takegahara
Klotho is known as an anti-aging gene. We previously reported that the expression of Klotho is a postoperative prognostic factor for patients with lung large cell neuroendocrine carcinoma and lung small cell carcinoma. Recently, Klotho was shown to suppress the epithelial-mesenchymal transition (EMT). In the present study, we examined the association between the expression of Klotho and the regulation of EMT in lung squamous cell carcinoma. We immunohistochemically examined the expression of Klotho in patients with lung squamous cell carcinoma who had undergone surgical resection or photodynamic therapy...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29132901/an-implication-of-klotho-related-molecules-in-different-smoking-related-health-outcomes-between-men-and-women
#5
Kaori Nakanishi, Makoto Nishida, Ryohei Yamamoto, Masahiro Koseki, Toshiki Moriyama, Keiko Yamauchi-Takihara
BACKGROUND: Men and women react differently to some disease states, and women are reported to be more sensitive than men to the toxic effects of smoking. We examined the serum concentration of Klotho-related molecules, α-Klotho (αKl) and fibroblast growth factor (FGF)-21, and the influence of smoking on these molecules in both sexes. METHODS: Subjects included 90 men and 140 women in good health who underwent a health examination. RESULTS: Among male subjects, serum concentrations of FGF-21, soluble sαKl, and inflammation-related cytokine interleukin (IL)-6 were significantly higher in smokers than in never-smokers...
November 10, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29131380/upregulation-of-prmt6-by-lps-suppresses-klotho-expression-through-interaction-with-nf-%C3%AE%C2%BAb-in-glomerular-mesangial-cells
#6
Kuen-Daw Tsai, Wen-Xi Lee, Wei Chen, Bo-Yu Chen, Kuan-Lin Chen, Tzu-Chia Hsiao, Sue-Hong Wang, Yi-Ju Lee, Shan-Yuan Liang, Jia-Ching Shieh, Ting-Hui Lin
Lipopolysaccharide (LPS) released from gram-negative bacteria stimulates immune responses in infected cells. Epigenetic modifications such as DNA methylation and protein methylation modulate LPS-induced innate immune gene expressions. Expression of the Klotho protein decreased with LPS treatment in rats. In a cellular model, information regarding the effect of LPS on Klotho expression was meager. In the present study, we demonstrated that LPS triggered global DNA and protein methylation in glomerular mesangial MES-13 cells...
November 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29107939/klotho-improves-cardiac-function-by-suppressing-reactive-oxygen-species-ros-mediated-apoptosis-by-modulating-mapks-nrf2-signaling-in-doxorubicin-induced-cardiotoxicity
#7
Huolan Zhu, Yan Gao, Shunming Zhu, Qianwei Cui, Jie Du
BACKGROUND Anthracyclines-induced cardiotoxicity has become one of the major restrictions of their clinical applications. Klotho showed cardioprotective effects. This study aimed to investigate the effects and possible mechanisms of klotho on doxorubicin (DOX)-induced cardiotoxicity. MATERIAL AND METHODS Rats and isolated myocytes were exposed to DOX and treated with exogenous klotho. Specific inhibitors and siRNAs silencing MAPKs were also used to treat the animals and/or myocytes. An invasive hemodynamic method was used to determine cardiac functions...
November 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29107062/the-anti-aging-protein-klotho-alleviates-injury-of-nigrostriatal-dopaminergic-pathway-in-6-hydroxydopamine-rat-model-of-parkinson-s-disease-involvement-of-pka-camkii-creb-signaling
#8
Tourandokht Baluchnejadmojarad, Seyed-Mohammad Eftekhari, Nida Jamali-Raeufy, Sobhan Haghani, Hossein Zeinali, Mehrdad Roghani
Parkinson's disease (PD) is a prevalent movement disorder in the elderly. PD is hallmarked with progressive deterioration of mesencephalic dopaminergic neurons and development of debilitating motor and non-motor clinical symptoms. Klotho protein is the product of an aging-suppressor gene that its overexpression could protect neurons against oxidative injury. This study was undertaken to explore whether exogenous klotho could alleviate injury of nigrostriatal dopaminergic pathway in 6-hydroxydopamine (6-OHDA) rat model of PD...
October 31, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29098321/sugar-sweetened-beverage-intake-associations-with-fasting-glucose-and-insulin-concentrations-are-not-modified-by-selected-genetic-variants-in-a-chrebp-fgf21-pathway-a-meta-analysis
#9
Nicola M McKeown, Hassan S Dashti, Jiantao Ma, Danielle E Haslam, Jessica C Kiefte-de Jong, Caren E Smith, Toshiko Tanaka, Mariaelisa Graff, Rozenn N Lemaitre, Denis Rybin, Emily Sonestedt, Alexis C Frazier-Wood, Dennis O Mook-Kanamori, Yanping Li, Carol A Wang, Elisabeth T M Leermakers, Vera Mikkilä, Kristin L Young, Kenneth J Mukamal, L Adrienne Cupples, Christina-Alexandra Schulz, Tzu-An Chen, Ruifang Li-Gao, Tao Huang, Wendy H Oddy, Olli Raitakari, Kenneth Rice, James B Meigs, Ulrika Ericson, Lyn M Steffen, Frits R Rosendaal, Albert Hofman, Mika Kähönen, Bruce M Psaty, Louise Brunkwall, Andre G Uitterlinden, Jorma Viikari, David S Siscovick, Ilkka Seppälä, Kari E North, Dariush Mozaffarian, Josée Dupuis, Marju Orho-Melander, Stephen S Rich, Renée de Mutsert, Lu Qi, Craig E Pennell, Oscar H Franco, Terho Lehtimäki, Mark A Herman
AIMS/HYPOTHESIS: Sugar-sweetened beverages (SSBs) are a major dietary contributor to fructose intake. A molecular pathway involving the carbohydrate responsive element-binding protein (ChREBP) and the metabolic hormone fibroblast growth factor 21 (FGF21) may influence sugar metabolism and, thereby, contribute to fructose-induced metabolic disease. We hypothesise that common variants in 11 genes involved in fructose metabolism and the ChREBP-FGF21 pathway may interact with SSB intake to exacerbate positive associations between higher SSB intake and glycaemic traits...
November 2, 2017: Diabetologia
https://www.readbyqxmd.com/read/29096595/pleiotropic-actions-of-fgf23
#10
Reinhold G Erben
Fibroblast growth factor-23 (FGF23) is a bone-derived hormone, mainly produced by osteoblasts and osteocytes in response to increased extracellular phosphate and circulating vitamin D hormone. Endocrine FGF23 signaling requires co-expression of the ubiquitously expressed FGF receptor 1 (FGFR1) and the co-receptor α-Klotho (Klotho). In proximal renal tubules, FGF23 suppresses the membrane expression of the sodium-phosphate cotransporters Npt2a and Npt2c which mediate urinary reabsorption of filtered phosphate...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/29092060/evidence-for-bone-and-mineral-metabolism-alterations-in-children-with-autosomal-dominant-polycystic-kidney-disease
#11
Stéphanie De Rechter, Justine Bacchetta, Nathalie Godefroid, Laurence Dubourg, Pierre Cochat, Julie Maquet, Ann Raes, Jean De Schepper, Pieter Vermeersch, Maria Van Dyck, Elena Levtchenko, Patrick D'Haese, Pieter Evenepoel, Djalila Mekahli
Context: Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease. Hypophosphatemia was demonstrated in adult patients with preserved renal function, together with high fibroblast growth factor 23 (FGF23) and low soluble Klotho levels. The latter explained the relative FGF23 hyporesponsiveness in this cohort. Objective: Evaluating phosphate and bone mineral metabolism in children with ADPKD compared with what is known in adult ADPKD patients...
November 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29081845/the-effects-of-aerobic-and-anaerobic-exercises-on-circulating-soluble-klotho-and-igf-i-in-young-and-elderly-adults-and-in-cad-patients
#12
REVIEW
Moran S Saghiv, D Ben Sira, E Goldhammer, M Sagiv
Different studies support the notion that chronic aerobic exercises training can influence the circulating levels of soluble-Klotho (s-Klotho) and insulin-like growth factor 1 (IGF-I). The effects of s-Klotho include improving the quality of life, alleviating the negative impact of age on the body's work capacity, and possibly increasing longevity. This review provides an overview of the latest findings in this field of research in humans. The different modes of dynamic exercise and their impact on circulating levels of s-Klotho and IGF-I in young adult athletes, untrained young adults, trained healthy older adults, untrained healthy older adults, and coronary artery disease (CAD) patients are reviewed and discussed...
January 2017: J Circ Biomark
https://www.readbyqxmd.com/read/29074818/randomized-clinical-trial-of-sevelamer-carbonate-on-serum-klotho-and-fibroblast-growth-factor-23-in-ckd
#13
Sophie Liabeuf, Jean-Philippe Ryckelynck, Najeh El Esper, Pablo Ureña, Christian Combe, Bertrand Dussol, Denis Fouque, Philippe Vanhille, Luc Frimat, Eric Thervet, Romuald Mentaverri, Dominique Prié, Gabriel Choukroun
BACKGROUND AND OBJECTIVES: Epidemiologic studies suggest that higher serum phosphaturic hormone fibroblast growth factor 23 levels are associated with increase morbidity and mortality. The aim of the FGF23 Reduction Efficacy of a New Phosphate Binder in CKD Trial was to evaluate the effect of sevelamer carbonate on serum C-terminal fibroblast growth factor 23 levels in normophosphatemic patients with CKD stage 3b/4. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Patients with CKD, eGFR between 45 and 15 ml/min per 1...
October 26, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29071768/protective-effect-of-salvianolic-acid-a-on-ischaemia-reperfusion-acute-kidney-injury-in-rats-through-protecting-against-peritubular-capillary-endothelium-damages
#14
Zuokai Zhang, Dong Qi, Xuekai Wang, Zhenfang Gao, Peng Li, Wenbo Liu, Xiao Tian, Yue Liu, Mingyan Yang, Ke Liu, Huaying Fan
Renal ischaemia-reperfusion (I/R) injury is the most common cause of acute kidney injury (AKI). Peritubular capillary (PTC) endothelium damages are an important pathogenesis during I/R AKI. Salvianolic acid A (SAA) possesses various pharmacological activities. The study investigated whether SAA ameliorated I/R AKI through protecting against PTC endothelium damages. Male Sprague-Dawley rats were divided into 6 groups: control, sham, I/R, and I/R plus SAA (2.5, 5, 10 mg/kg) groups. Rats were subjected to bilateral renal pedicle clamping for 60 min, and killed at 24 hr after reperfusion...
October 26, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29063524/on-the-relationship-between-proteinuria-and-plasma-phosphate
#15
Sophie de Seigneux, Alexandra Wilhelm-Bals, Marie Courbebaisse
Albuminuria is strongly associated with renal and cardiovascular outcomes independently of renal function level. However, the pathophysiology of these associations is debated. In chronic kidney disease (CKD), phosphate retention participates in cardiovascular events and increased cardiovascular mortality. We hypothesised that albuminuria may modulate tubular phosphate handling by the kidney. To verify this hypothesis, we first studied the association between phosphataemia and albuminuria in children with nephrotic syndrome and in adults with CKD...
October 24, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29061648/plasma-s-klotho-is-related-to-kidney-function-and-predicts-adverse-renal-outcomes-in-patients-with-advanced-chronic-kidney-disease
#16
Qi-Feng Liu, Jian-Ming Ye, Li-Xia Yu, Ao-Lin He, Qiang Sun, Da-Wei He, Sha-Sha Li
To investigate whether the soluble Klotho (s-Klotho) level in patients with chronic kidney disease (CKD) is related to kidney function and whether a low s-Klotho level can predict adverse renal outcomes or CKD progression in patients with advanced CKD. 112 patients with CKD stages 3-5 and 30 healthy volunteers were enrolled. Blood samples were collected to measure serum creatinine, calcium, phosphorus, intact parathyroid hormone, and hemoglobin. s-Klotho and fibroblast growth factor 23 (FGF23) were determined by ELISA...
October 23, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29056164/adam17-a-new-player-in-the-pathogenesis-of-chronic-kidney-disease-mineral-and-bone-disorder
#17
Alessandra F Perna, Alessandra Pizza, Annarita Di Nunzio, Rocco Bellantone, Marco Raffaelli, Tommaso Cicchella, Giovanni Conzo, Luigi Santini, Miriam Zacchia, Francesco Trepiccione, Diego Ingrosso
The triad composed by α-Klotho, fibroblast growth factor-23, and its receptor are involved in the pathogenesis of chronic kidney disease-mineral and bone disorder. A disintegrin and metalloproteinase 17 (ADAM17) is a metalloproteinase causing the proteolytic shedding of α-Klotho from the cell membrane, and its role in chronic kidney disease-mineral and bone disorder is not yet known. We studied the circulating levels of the above-mentioned mediators in patients with secondary hyperparathyroidism due to uremia, compared to control subjects, as well as in patients with primary hyperparathyroidism...
November 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29053774/plasma-klotho-and-frailty-in-older-adults-findings-from-the-inchianti-study
#18
Michelle Shardell, Richard D Semba, Rita R Kalyani, Stefania Bandinelli, Aric A Prather, Chee W Chia, Luigi Ferrucci
Background: The hormone klotho, encoded by the gene klotho, is primarily expressed in the kidney and choroid plexus of the brain. Higher klotho concentrations have been linked to better physical performance; however, it is unknown whether klotho relates to frailty status in older adults. Methods: Plasma klotho was measured in 774 participants aged ≥ 65 years enrolled in InCHIANTI, a prospective cohort study comprising Italian adults. Frailty status was assessed at three and six years after enrollment...
October 19, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29046474/human-alternative-klotho-mrna-is-a-nonsense-mediated-mrna-decay-target-inefficiently-spliced-in-renal-disease
#19
Rik Mencke, Geert Harms, Jill Moser, Matijs van Meurs, Arjan Diepstra, Henri G Leuvenink, Jan-Luuk Hillebrands
Klotho is a renal protein involved in phosphate homeostasis, which is downregulated in renal disease. It has long been considered an antiaging factor. Two Klotho gene transcripts are thought to encode membrane-bound and secreted Klotho. Indeed, soluble Klotho is detectable in bodily fluids, but the relative contributions of Klotho secretion and of membrane-bound Klotho shedding are unknown. Recent advances in RNA surveillance reveal that premature termination codons, as present in alternative Klotho mRNA (for secreted Klotho), prime mRNAs for degradation by nonsense-mediated mRNA decay (NMD)...
October 19, 2017: JCI Insight
https://www.readbyqxmd.com/read/29040534/macrophages-escape-klotho-gene-silencing-in-the-mdx-mouse-model-of-duchenne-muscular-dystrophy-and-promote-muscle-growth-and-increase-satellite-cell-numbers-through-a-klotho-mediated-pathway
#20
Michelle Wehling-Henricks, Steven S Welc, Guiseppina Samengo, Chiara Rinaldi, Catherine Lindsey, Ying Wang, Jeongyoon Lee, Makoto Kuro-O, James G Tidball
Duchenne muscular dystrophy (DMD) is a muscle wasting disease in which inflammation influences the severity of pathology. We found that the onset of muscle inflammation in the mdx mouse model of DMD coincides with large increases in expression of pro-inflammatory cytokines [tumor necrosis factor-α (TNFα); interferon gamma (IFNγ)] and dramatic reductions of the pro-myogenic protein Klotho in muscle cells and large increases of Klotho in pro-regenerative, CD206+ macrophages. Furthermore, TNFα and IFNγ treatments reduced Klotho in muscle cells and increased Klotho in macrophages...
October 12, 2017: Human Molecular Genetics
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