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https://www.readbyqxmd.com/read/27905947/fibroblast-growth-factor-21-potentially-inhibits-microrna-33-expression-to-affect-macrophage-actions
#1
EDITORIAL
Yuan Guo, Fei Luo, Yuhong Yi, Danyan Xu
Atherosclerosis is a chronic inflammatory disease with complex pathological processes. MicroRNA-33 (miR-33), a novel non-coding RNA that coexpresses with sterol regulatory element-binding proteins (SREBPs), affects macrophage actions to prevent atherosclerosis. Fibroblast growth factor 21 (FGF21) is an important regulator of lipid metabolism, especially for macrophage-related cholesterol export, but the mechanism is not fully studied. Interestingly, FGF21 has been evidenced to prevent atherosclerosis via inhibiting SREBP-2 expression...
December 1, 2016: Lipids in Health and Disease
https://www.readbyqxmd.com/read/27904677/an-engineered-fgf21-variant-ly2405319-can-prevent-non-alcoholic-steatohepatitis-by-enhancing-hepatic-mitochondrial-function
#2
Ju Hee Lee, Yea Eun Kang, Joon Young Chang, Ki Cheol Park, Hyeon-Woo Kim, Jung Tae Kim, Hyun Jin Kim, Hyon-Seung Yi, Minho Shong, Hyo Kyun Chung, Koon Soon Kim
Non-alcoholic fatty liver disease (NAFLD) is a prevalent obesity-related disease that affects large populations throughout the world due to excessive calorie intake and an increasingly sedentary lifestyle. Fibroblast growth factor 21 (FGF21) has recently emerged as a promising therapeutic candidate for the treatment of obesity and diabetes. FGF21 is a starvation-induced pleiotropic hormone with various beneficial metabolic effects, and pharmacological treatment in rodents has been shown to improve insulin sensitivity and decrease simple fatty liver disease...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27902456/long-term-caloric-restriction-in-apoe-deficient-mice-results-in-neuroprotection-via-fgf21-induced-ampk-mtor-pathway
#3
Claire Rühlmann, Tjark Wölk, Tobias Blümel, Laura Stahn, Brigitte Vollmar, Angela Kuhla
Caloric restriction (CR) decelerates the aging process, extends lifespan and exerts neuroprotective effects in diverse species by so far unknown mechanisms. Based on known neuroprotective effects of fibroblastic growth factor 21 (Fgf21) we speculate that CR upregulates Fgf21, which phosphorylates neuronal AMP-activated protein kinase (AMPK), leading to a decrease of mammalian target of rapamycin (mTOR) signaling activity and an inhibition of tau-hyperphosphorylation. This in turn reduces the formation of neurofibrillary tangles, a neuropathological hallmark of Alzheimer´s disease...
November 29, 2016: Aging
https://www.readbyqxmd.com/read/27892934/treatment-with-fgfr2-iiic-monoclonal-antibody-suppresses-weight-gain-and-adiposity-in-kka-y-mice
#4
K Nonogaki, T Kaji, T Yamazaki, Mari Murakami
Expression of β-Kotho, fibroblast growth factor receptor (FGFR)-1c and 2c, which bind FGF21, is decreased in the white adipose tissue of obese mice. The aim of the present study was to determine the role of FGFR2c in the development of obesity and diabetes in KKA(y) mice. Treatment with mouse monoclonal FGFR2-IIIc antibody (0.5 mg kg(-1)) significantly suppressed body weight gain and epididymal white adipose tissue weight in individually housed KKA(y) mice while having no effect on daily food intake. In addition, treatment with FGFR2-IIIc antibody significantly increased plasma-free fatty acid levels while having no effect on blood glucose or plasma FGF21 levels...
November 28, 2016: Nutrition & Diabetes
https://www.readbyqxmd.com/read/27889897/growth-differentiation-factor-15-is-a-novel-diagnostic-biomarker-of-mitochondrial-diseases
#5
Xinbo Ji, Lizhen Zhao, Kunqian Ji, Yuying Zhao, Wei Li, Rui Zhang, Ying Hou, Jianqiang Lu, Chuanzhu Yan
The present study aimed to investigate whether serum growth differentiation factor 15 concentration is a valuable and reliable diagnostic biomarker of mitochondrial diseases. We examined consecutive patients with mitochondrial diseases, in comparison with patients with non-mitochondrial disease neuromuscular disorders and healthy controls. The serum concentrations of growth differentiation factor 15 were measured by ELISA, and compared with those of FGF21, lactate, and creatine kinase. We also evaluated the correlations between growth differentiation factor 15 concentrations and the Newcastle Mitochondrial Disease Adult Scale, numbers of ragged-red fibers, and COX-negative fibers in the biopsied muscles...
November 26, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27883936/relationship-between-fgf21-and-ucp1-levels-under-time-restricted-feeding-and-high-fat-diet
#6
Nava Chapnik, Yoni Genzer, Oren Froy
Fibroblast growth factor 21 (FGF21) exhibits a circadian oscillation, and its induction is critical during fasting. When secreted by liver and skeletal muscle, FGF21 enhances thermogenic activity in brown adipose tissue (BAT) by utilizing uncoupling protein 1 (UCP1) to dissipate energy as heat. Recently, it has been reported that UCP1 is not required for FGF21-mediated reduction in body weight or improvements in glucose homeostasis. As the relationship between FGF21 and UCP1 induction in tissues other than BAT is less clear, we tested the effect of restricted feeding (RF) and high dietary fat on FGF21 circadian expression and its correlation with UCP1 expression in liver and white adipose tissue (WAT)...
November 2, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27882323/effect-of-methionine-restriction-on-bone-density-and-nk-cell-activity
#7
Mingxin Li, Lidong Zhai, Wanfu Wei, Jingming Dong
Methionine restriction (MR) is proven to increase the lifespan; and it also affects the bone density and the innate immune system. The aim of this study is to explore the effect of methionine restriction on bone density and natural killer (NK) cells. C57BL/6J mice were subjected to either basal diet (BD, containing 0.80% methionine) or methionine-restricted diet (containing 0.14% methionine). Mice with MR diet displayed reduced bone mass and decrease in the cytotoxicity of NK from the spleen, compared to BD animals...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27878865/fibroblast-growth-factor-21-night-watch-advances-and-uncertainties-in-the-field
#8
REVIEW
A Kharitonenkov, R DiMarchi
Fibroblast growth factor (FGF) 21 belongs to a hormone-like subgroup within the FGF superfamily. The members of this subfamily, FGF19, FGF21 and FGF23, are characterized by their reduced binding affinity for heparin that enables them to be transported in the circulation and function in an endocrine manner. It is likely that FGF21 also acts in an autocrine and paracrine fashion, as multiple organs can produce this protein and its plasma concentration seems to be below the level necessary to induce a pharmacological effect...
November 22, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27875248/vildagliptin-and-caloric-restriction-for-cardioprotection-in-pre-diabetic-rats
#9
Pongpan Tanajak, Hiranya Pintana, Natthaphat Siri-Angkul, Juthamas Khamseekaew, Nattayaporn Apaijai, Siriporn C Chattipakorn, Nipon Chattipakorn
Long-term high-fat diet (HFD) consumption causes cardiac dysfunction. Although calorie restriction (CR) has been shown to be useful in obesity, we hypothesized that combined CR with dipeptidyl peptidase-4 (DPP-4) inhibitor provides greater efficacy than monotherapy in attenuating cardiac dysfunction and metabolic impairment in HFD-induced obese-insulin resistant rats. Thirty male Wistar rats were divided into 2 groups to be fed on either a normal diet (ND, n = 6) or a HFD (n = 24) for 12 weeks. Then, HFD rats were divided into 4 subgroups (n = 6/subgroup) to receive just the vehicle, CR diet (60% of mean energy intake and changed to ND), vildagliptin (3 mg/kg/day) or combined CR and vildagliptin for 4 weeks...
February 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/27875243/rev-erb%C3%AE-regulates-fgf21-expression-in-the-liver-via-hepatic-nuclear-factor-6
#10
Rohit Chavan, Nadia Preitner, Takashi Okabe, Laureen Mansencal Strittmatter, Cheng Xu, Jürgen A Ripperger, Nelly Pitteloud, Urs Albrecht
The circadian clock contributes to the timing of many body functions including metabolism and reproduction. The hepatokine fibroblast growth factor 21 (FGF21) is a critical metabolic regulator involved in regulation of fertility. Here we show that lack of the clock component REV-ERBα elevates FGF21 levels in liver and plasma. At the molecular level REV-ERBα modulates the expression of FGF21 via the liver specific hepatic nuclear factor 6 (HNF6). We conclude, that REV-ERBα regulates metabolism and reproduction at least in part via regulation of Fgf21...
November 14, 2016: Biology Open
https://www.readbyqxmd.com/read/27853148/the-lipid-sensor-gpr120-promotes-brown-fat-activation-and-fgf21-release-from-adipocytes
#11
Tania Quesada-López, Rubén Cereijo, Jean-Valery Turatsinze, Anna Planavila, Montserrat Cairó, Aleix Gavaldà-Navarro, Marion Peyrou, Ricardo Moure, Roser Iglesias, Marta Giralt, Decio L Eizirik, Francesc Villarroya
The thermogenic activity of brown adipose tissue (BAT) and browning of white adipose tissue are important components of energy expenditure. Here we show that GPR120, a receptor for polyunsaturated fatty acids, promotes brown fat activation. Using RNA-seq to analyse mouse BAT transcriptome, we find that the gene encoding GPR120 is induced by thermogenic activation. We further show that GPR120 activation induces BAT activity and promotes the browning of white fat in mice, whereas GRP120-null mice show impaired cold-induced browning...
November 17, 2016: Nature Communications
https://www.readbyqxmd.com/read/27832059/elevated-serum-fibroblast-growth-factor-21-in-humans-with-acute-pancreatitis
#12
Vivek K Shenoy, Kristin M Beaver, Ffolliott M Fisher, Garima Singhal, Jody R Dushay, Eleftheria Maratos-Flier, Sarah N Flier
BACKGROUND: The metabolic regulator Fibroblast Growth Factor 21 (FGF21) is highly expressed in the acinar pancreas, but its role in pancreatic function is obscure. It appears to play a protective role in acute experimental pancreatitis in mice. The aim of this study was to define an association between FGF21 and the course and resolution of acute pancreatitis in humans. METHODS AND PRINCIPAL FINDINGS: Twenty five subjects with acute pancreatitis admitted from May to September 2012 to the Beth Israel Deaconess Medical Center (BIDMC) were analyzed...
2016: PloS One
https://www.readbyqxmd.com/read/27826354/the-effects-on-weight-loss-and-gene-expression-in-adipose-and-hepatic-tissues-of-very-low-carbohydrate-and-low-fat-isoenergetic-diets-in-diet-induced-obese-mice
#13
Tomomi Yamazaki, Sumire Okawa, Mayumi Takahashi
BACKGROUND: Obesity is caused by excessive fat or carbohydrate intake. The improvement of obesity is an important issue, especially in Western societies. Both low-carbohydrate diet (LCD) and low-fat diet (LFD) are used to achieve weight loss in humans. To clarify the mechanisms underlying LCD-induced weight loss, especially in early stage, we compared the gene expression in liver, white adipose tissue (WAT) and brown adipose tissue (BAT) of a very-low carbohydrate diet (VLCD)- and LFD-fed diet-induced obese (DIO) mice...
2016: Nutrition & Metabolism
https://www.readbyqxmd.com/read/27818935/intestinal-crebh-overexpression-prevents-high-cholesterol-diet-induced-hypercholesterolemia-by-reducing-npc1l1-expression
#14
Takuya Kikuchi, Kana Orihara, Fusaka Oikawa, Song-Iee Han, Motoko Kuba, Kanako Okuda, Aoi Satoh, Yoshinori Osaki, Yoshinori Takeuchi, Yuichi Aita, Takashi Matsuzaka, Hitoshi Iwasaki, Shigeru Yatoh, Motohiro Sekiya, Naoya Yahagi, Hiroaki Suzuki, Hirohito Sone, Yoshimi Nakagawa, Nobuhiro Yamada, Hitoshi Shimano
OBJECTIVE: The transcription factor cyclic AMP-responsive element-binding protein H (CREBH, encoded by Creb3l3) is highly expressed in the liver and small intestine. Hepatic CREBH contributes to glucose and triglyceride metabolism by regulating fibroblast growth factor 21 (Fgf21) expression. However, the intestinal CREBH function remains unknown. METHODS: To investigate the influence of intestinal CREBH on cholesterol metabolism, we compared plasma, bile, fecal, and tissue cholesterol levels between wild-type (WT) mice and mice overexpressing active human CREBH mainly in the small intestine (CREBH Tg mice) under different dietary conditions...
November 2016: Molecular Metabolism
https://www.readbyqxmd.com/read/27811171/fibroblast-growth-factor-21-reverses-suppression-of-adiponectin-expression-via-inhibiting-endoplasmic-reticulum-stress-in-adipose-tissue-of-obese-mice
#15
Qinyue Guo, Lin Xu, Jiali Liu, Huixia Li, Hongzhi Sun, Shufang Wu, Bo Zhou
Fibroblast growth factor 21 (FGF21) has recently emerged as a novel endocrine hormone involved in the regulation of glucose and lipid metabolism. However, the exact mechanisms whereby FGF21 mediates insulin sensitivity remain not fully understood. In the present study, FGF21was administrated in high-fat diet-induced obese mice and tunicamycin-induced 3T3-L1 adipocytes, and metabolic parameters, endoplasmic reticulum (ER) stress indicators, and insulin signaling molecular were assessed by Western blotting. The administration of FGF21 in obese mice reduced body weight, blood glucose and serum insulin, and increased insulin sensitivity, resulting in alleviation of insulin resistance...
November 3, 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27803896/roles-of-fgf-signals-in-heart-development-health-and-disease
#16
REVIEW
Nobuyuki Itoh, Hiroya Ohta, Yoshiaki Nakayama, Morichika Konishi
The heart provides the body with oxygen and nutrients and assists in the removal of metabolic waste through the blood vessels of the circulatory system. It is the first organ to form during embryonic morphogenesis. FGFs with diverse functions in development, health, and disease are signaling proteins, mostly as paracrine growth factors or endocrine hormones. The human/mouse FGF family comprises 22 members. Findings obtained from mouse models and human diseases with FGF signaling disorders have indicated that several FGFs are involved in heart development, health, and disease...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27798284/assessment-of-growth-and-metabolism-characteristics-in-offspring-of-dehydroepiandrosterone-induced-polycystic-ovary-syndrome-adults
#17
Ying Huang, Jiang-Man Gao, Chun-Mei Zhang, Hong-Cui Zhao, Yue Zhao, Rong Li, Yang Yu, Jie Qiao
Polycystic ovary syndrome (PCOS) is a common reproductive disorder that has many characteristic features including hyperandrogenemia, insulin resistance and obesity, which may have significant implications for pregnancy outcomes and long-term health of women. Daughters born to PCOS mothers constitute a high-risk group for metabolic and reproductive derangements, but no report has described potential growth and metabolic risk factors for such female offspring. Hence, we used a mouse model of dehydroepiandrosterone (DHEA)-induced PCOS to study the mechanisms underlying the pathology of PCOS by investigating the growth, developmental characteristics, metabolic indexes and expression profiles of key genes of offspring born to the models...
December 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27797398/hepatic-chemerin-mrna-expression-is-reduced-in-human-nonalcoholic-steatohepatitis
#18
Rebekka Pohl, Elisabeth M Haberl, Lisa Rein-Fischboeck, Sebastian Zimny, Maximilian Neumann, Charalampos Aslanidis, Doris Schacherer, Sabrina Krautbauer, Kristina Eisinger, Thomas S Weiss, Christa Buechler
BACKGROUND: Chemerin is associated with insulin resistance and is expressed in the liver. Nonalcoholic fatty liver disease (NAFLD) is related to impaired insulin sensitivity, but studies evaluating hepatic and serum chemerin in NAFLD resulted in discordant data. MATERIALS AND METHODS: Chemerin mRNA was determined in the liver tissue obtained from 33 controls and 76 NAFLD patients. Chemerin serum levels were measured in a different cohort of patients with ultrasound-diagnosed NAFLD and the respective controls...
October 31, 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27794110/the-swinging-pendulum-of-biomarkers-in-mitochondrial-disease-the-role-of-fgf21
#19
Hannah E Steele, Rita Horvath, Robert W Taylor
No abstract text is available yet for this article.
October 28, 2016: Neurology
https://www.readbyqxmd.com/read/27794108/fgf21-is-a-biomarker-for-mitochondrial-translation-and-mtdna-maintenance-disorders
#20
Jenni M Lehtonen, Saara Forsström, Emanuela Bottani, Carlo Viscomi, Olivier R Baris, Helena Isoniemi, Krister Höckerstedt, Pia Österlund, Mikko Hurme, Juulia Jylhävä, Sirpa Leppä, Ritva Markkula, Tiina Heliö, Giuliana Mombelli, Johanna Uusimaa, Reijo Laaksonen, Hannu Laaksovirta, Mari Auranen, Massimo Zeviani, Jan Smeitink, Rudolf J Wiesner, Kazuto Nakada, Pirjo Isohanni, Anu Suomalainen
OBJECTIVE: To validate new mitochondrial myopathy serum biomarkers for diagnostic use. METHODS: We analyzed serum FGF21 (S-FGF21) and GDF15 from patients with (1) mitochondrial diseases and (2) nonmitochondrial disorders partially overlapping with mitochondrial disorder phenotypes. We (3) did a meta-analysis of S-FGF21 in mitochondrial disease and (4) analyzed S-Fgf21 and skeletal muscle Fgf21 expression in 6 mouse models with different muscle-manifesting mitochondrial dysfunctions...
October 28, 2016: Neurology
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