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https://www.readbyqxmd.com/read/28109285/korean-mistletoe-viscum-album-coloratum-extract-regulates-gene-expression-related-to-muscle-atrophy-and-muscle-hypertrophy
#1
Juseong Jeong, Choon-Ho Park, Inbo Kim, Young-Ho Kim, Jae-Min Yoon, Kwang-Soo Kim, Jong-Bae Kim
BACKGROUND: Korean mistletoe (Viscum album coloratum) is a semi-parasitic plant that grows on various trees and has a diverse range of effects on biological functions, being implicated in having anti-tumor, immunostimulatory, anti-diabetic, and anti-obesity properties. Recently, we also reported that Korean mistletoe extract (KME) improves endurance exercise in mice, suggesting its beneficial roles in enhancing the capacity of skeletal muscle. METHODS: We examined the expression pattern of several genes concerned with muscle physiology in C2C12 myotubes cells to identify whether KME inhibits muscle atrophy or promotes muscle hypertrophy...
January 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28108329/exercise-increases-mitochondrial-complex-i-activity-and-drp1-expression-in-the-brains-of-aged-mice
#2
Aaron M Gusdon, Jason Callio, Giovanna DiStefano, Robert M O'Doherty, Bret H Goodpaster, Paul M Coen, Charleen T Chu
Exercise is known to have numerous beneficial effects. Recent studies indicate that exercise improves mitochondrial energetics not only in skeletal muscle but also in other tissues. While exercise elicits positive effects on memory, neurogenesis, and synaptic plasticity, the effects of exercise on brain mitochondrial energetics remain relatively unknown. Herein, we studied the effects of exercise training in old and young mice on brain mitochondrial energetics, in comparison to known effects on peripheral tissues that utilize fatty acid oxidation...
January 17, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28107911/a-positively-charged-porous-graphitic-carbon-stationary-phase-for-hydrophilic-interaction-liquid-chromatography
#3
Yanjie Hou, Feifang Zhang, Xuefang Liu, Yanjun Ren, Bingcheng Yang
High chemical inertness of porous graphitic carbon particles (PGC) makes their surface modification rather difficult. Here a facile way is proposed to prepare a PGC stationary phase with quaternary ammonium-polyvinyl alcohol mixed functional groups for hydrophilic interaction liquid chromatography (HILIC) by generating a thin layer of polyvinyl alcohol (PVA) and poly(diallyldimethylammonium chloride) (DDAC) copolymer onto PGC particles. The phase shows obvious positively electrostatic character and typical HILIC character, exhibiting different selectivity relative to several HILIC phases and bare PGC...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107769/the-transcriptional-modulator-ifrd1-controls-pgc-1%C3%AE-expression-under-short-term-adrenergic-stimulation-in-brown-adipocytes
#4
Gyujin Park, Tetsuhiro Horie, Takashi Kanayama, Kazuya Fukasawa, Takashi Iezaki, Yuki Onishi, Kakeru Ozaki, Yukari Nakamura, Yukio Yoneda, Takeshi Takarada, Eiichi Hinoi
Sympathetic tone activates the function of classical brown adipocytes, which constitutively exist in the brown adipose tissue, and inducible brown adipocytes (so-called beige adipocytes), which sporadically reside within the white adipose tissue. Here we identified the transcriptional modulator interferon-related developmental regulator 1 (Ifrd1) as a negative regulator of thermogenic and mitochondrial gene expression in brown adipocytes. Ifrd1 expression was markedly induced by cold exposure and administration of CL-316243 (a β3 adrenergic agonist) in interscapular brown adipose and inguinal subcutaneous white adipose tissues, but not in epididymal visceral white adipose tissue, in vivo...
January 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28107010/phase-equilibria-of-water-co2-and-water-n-alkane-mixtures-from-polarizable-models
#5
Hao Jiang, Ioannis George Economou, Athanassios Z Panagiotopoulos
Phase equilibria of water/CO2 and water/n-alkane mixtures over a range of temperatures and pressures were obtained from Monte Carlo simulations in the Gibbs ensemble. Three sets of Drude-type polarizable models for water, namely the BK3, GCP, and HBP models, were combined with a polarizable Gaussian charge CO2 (PGC) model to represent the water/CO2 mixture. The HBP water model describes hydrogen bonds between water and CO2 explicitly. All models underestimate CO2 solubility in water if standard combining rules are used for the dispersion interactions between water and CO2 ...
January 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28104916/trpv1-activation-counters-diet-induced-obesity-through-sirtuin-1-activation-and-prdm-16-deacetylation-in-brown-adipose-tissue
#6
P Baskaran, V Krishnan, K Fettel, P Gao, Z Zhu, J Ren, B Thyagarajan
BACKGROUND/OBJECTIVE: An imbalance between energy intake and expenditure leads to obesity. Increasing metabolism and thermogenesis in brown adipose tissue (BAT) can help in overcoming obesity. Here, we investigated the effect of activation of transient receptor potential vanilloid subfamily 1 (TRPV1) in the upregulation of thermogenic proteins in BAT to counter diet-induced obesity. SUBJECTS/METHODS: We investigated the effect of dietary supplementation of capsaicin (TRPV1 agonist) on the expression of metabolically important thermogenic proteins in BAT of wild type and TRPV1(-/-) mice that received either a normal chow or high fat (±capsaicin; TRPV1 activator) diet by immunoblotting...
January 20, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28104756/sugar-nucleotide-quantification-by-liquid-chromatography-tandem-mass-spectrometry-reveals-a-distinct-profile-in-plasmodium-falciparum-sexual-stage-parasites
#7
Borja López-Gutiérrez, Rhoel R Dinglasan, Luis Izquierdo
The obligate intracellular lifestyle of Plasmodium falciparum and the difficulties to obtain sufficient amounts of biological material has hampered the study of specific metabolic pathways in the malaria parasite. Thus, for example, the pools of sugar nucleotides required to fuel glycosylation reactions have never been studied in-depth in well-synchronized asexual parasites or in other stages of its life cycle. These metabolites are of critical importance, especially considering the renewed interest in the presence of N -, O - and other glycans in key parasite proteins...
January 19, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28101336/regulatory-elements-and-transcriptional-control-of-chicken-vasa-homologue-cvh-promoter-in-chicken-primordial-germ-cells
#8
So Dam Jin, Bo Ram Lee, Young Sun Hwang, Hong Jo Lee, Jong Seop Rim, Jae Yong Han
BACKGROUND: Primordial germ cells (PGCs), the precursors of functional gametes, have distinct characteristics and exhibit several unique molecular mechanisms to maintain pluripotency and germness in comparison to somatic cells. They express germ cell-specific RNA binding proteins (RBPs) by modulating tissue-specific cis- and trans-regulatory elements. Studies on gene structures of chicken vasa homologue (CVH), a chicken RNA binding protein, involved in temporal and spatial regulation are thus important not only for understanding the molecular mechanisms that regulate germ cell fate, but also for practical applications of primordial germ cells...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28099124/browning-of-white-adipose-tissue-lessons-from-experimental-models
#9
Thereza Cristina Lonzetti Bargut, Vanessa Souza-Mello, Marcia Barbosa Aguila, Carlos Alberto Mandarim-de-Lacerda
Beige or brite (brown-in-white) adipocytes are present in white adipose tissue (WAT) and have a white fat-like phenotype that when stimulated acquires a brown fat-like phenotype, leading to increased thermogenesis. This phenomenon is known as browning and is more likely to occur in subcutaneous fat depots. Browning involves the expression of many transcription factors, such as PR domain containing 16 (PRDM16) and peroxisome proliferator-activated receptor (PPAR)-γ, and of uncoupling protein (UCP)-1, which is the hallmark of thermogenesis...
January 18, 2017: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/28096382/mitochondrial-activation-chemicals-synergize-with-surface-receptor-pd-1-blockade-for-t-cell-dependent-antitumor-activity
#10
Kenji Chamoto, Partha S Chowdhury, Alok Kumar, Kazuhiro Sonomura, Fumihiko Matsuda, Sidonia Fagarasan, Tasuku Honjo
Although immunotherapy by PD-1 blockade has dramatically improved the survival rate of cancer patients, further improvement in efficacy is required to reduce the fraction of less sensitive patients. In mouse models of PD-1 blockade therapy, we found that tumor-reactive cytotoxic T lymphocytes (CTLs) in draining lymph nodes (DLNs) carry increased mitochondrial mass and more reactive oxygen species (ROS). We show that ROS generation by ROS precursors or indirectly by mitochondrial uncouplers synergized the tumoricidal activity of PD-1 blockade by expansion of effector/memory CTLs in DLNs and within the tumor...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096217/high-throughput-analysis-reveals-novel-maternal-germline-rnas-crucial-for-primordial-germ-cell-preservation-and-proper-migration
#11
Dawn A Owens, Amanda M Butler, Tristan H Aguero, Karen M Newman, Derek Van Booven, Mary Lou King
During oogenesis, hundreds of maternal RNAs are selectively localized to the animal or vegetal pole, including determinants of somatic and germline fates. Although microarray analysis has identified localized determinants, it is not comprehensive and is limited to known transcripts. Here, we utilized high-throughput RNA-sequencing analysis to comprehensively interrogate animal and vegetal pole RNAs in the fully grown Xenopus laevis oocyte. We identified 411 (198 annotated) and 27 (15 annotated) enriched mRNAs at the vegetal and animal pole, respectively...
January 15, 2017: Development
https://www.readbyqxmd.com/read/28095627/melatonin-regulates-lipid-metabolism-in-porcine-oocytes
#12
Jun-Xue Jin, Sanghoon Lee, Anukul Taweechaipaisankul, Geon A Kim, Byeong Chun Lee
It is being increasingly recognized that the processes of lipogenesis and lipolysis are important for providing an essential energy source during oocyte maturation and embryo development. Recent studies demonstrated that melatonin has a role in lipid metabolism regulation, including lipogenesis, lipolysis and mitochondrial biogenesis. In this study, we attempted to investigate the effects of melatonin on lipid metabolism during porcine oocyte in vitro maturation. Melatonin treatment significantly enhanced the number of lipid droplets (LDs) and upregulated gene expression related to lipogenesis (ACACA, FASN, PPARγ, and SREBF1)...
January 17, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28092746/supranutritional-selenium-intake-from-enriched-milk-casein-impairs-hepatic-insulin-sensitivity-via-attenuated-irs-pi3k-akt-signaling-and-decreased-pgc-1%C3%AE-expression-in-male-sprague-dawley-rats
#13
Priska Stahel, Julie J Kim, Scott R L Cieslar, Jenny M Warrington, Changting Xiao, John P Cant
Selenium (Se)-enriched milk provides antioxidant benefits and has therapeutic potential against cancer. However, both antidiabetic and prodiabetic effects have been attributed to Se. Our objective was to evaluate the effect of Se-enriched milk casein on insulin sensitivity in rats when given at the requirement of 0.25 ppm Se and supranutritionally on both low- and high-fat diets. Two hundred sixteen male Sprague-Dawley rats were fed low- or high-fat diets containing one, two or eight times the Se requirement in a randomized block design...
January 7, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28091624/paracrine-cross-talk-between-skeletal-muscle-and-macrophages-in-exercise-by-pgc-1%C3%AE-controlled-bnp
#14
Regula Furrer, Petra S Eisele, Alexander Schmidt, Markus Beer, Christoph Handschin
Activation of resident and infiltrating immune cells is a central event in training adaptation and other contexts of skeletal muscle repair and regeneration. A precise orchestration of inflammatory events in muscle fibers and immune cells is required after recurrent contraction-relaxation cycles. However, the mechanistic aspects of this important regulation remain largely unknown. We now demonstrate that besides a dominant role in controlling cellular metabolism, the peroxisome proliferator-activated receptor γ co-activator 1α (PGC-1α) also has a profound effect on cytokine expression in muscle tissue...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091351/supplementing-the-maternal-diet-of-rats-with-butyrate-enhances-mitochondrial-biogenesis-in-the-skeletal-muscles-of-weaned-offspring
#15
Yanping Huang, Shixing Gao, Guo Jun, Ruqian Zhao, Xiaojing Yang
The present study aimed to investigate the effects of maternal dietary butyrate supplementation on energy metabolism and mitochondrial biogenesis in offspring skeletal muscle and the possible mediating mechanisms. Virgin female rats were randomly assigned to either control or butyrate diets (1 % butyrate sodium) throughout gestation and lactation. At the end of lactation (21 d), the offspring were killed by exsanguination from the abdominal aorta under anaesthesia. The results showed that maternal butyrate supplementation throughout gestation and lactation did not affect offspring body weight...
January 16, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28090143/acute-exercise-regulates-adipogenic-gene-expression-in-white-adipose-tissue
#16
Y Shen, H Zhou, W Jin, H J Lee
White adipose tissue expansion is associated with both hypertrophy and hyperplasia of adipocytes. Exercise training results in adipocyte hypotrophy by activating lipolysis, but it is poorly understood whether exercise regulates adipogenesis by altering adipogenic gene expression. The purpose of this study was to evaluate the effect of a single bout of swimming exercise on adipogenic gene expression in white adipose tissue (WAT). Male C57BL/6J mice were divided into two groups: a sedentary control group and a 120-minute swimming exercise group...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28089435/jejunal-gluconeogenesis-associated-with-insulin-resistance-level-and-its-evolution-after-roux-en-y-gastric-bypass
#17
Carolina Gutierrez-Repiso, Sara Garcia-Serrano, Francisco J Moreno-Ruiz, Guillermo Alcain-Martinez, Francisca Rodriguez-Pacheco, Eduardo Garcia-Fuentes
BACKGROUND: Intestinal gluconeogenesis (GNG) may play an important role in glucose homeostasis, but there is little information about the condition in humans. OBJECTIVES: To study the relationship between intestinal GNG and insulin resistance, its association with the evolution of morbidly obese patients after bariatric surgery, and the effect of insulin and or leptin. SETTING: Regional university hospital, Malaga (Spain). METHODS: Jejunal mRNA expression of genes involved in GNG was analyzed in 3 groups of morbidly obese patients who underwent Roux-en-Y gastric bypass: with low insulin resistance (MO-low-IR), with high insulin resistance (MO-high-IR), and with type 2 diabetes treated with metformin (MO-metf-T2D)...
December 2, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28087733/metformin-restores-the-mitochondrial-network-and-reverses-mitochondrial-dysfunction-in-down-syndrome-cells
#18
Antonella Izzo, Maria Nitti, Nunzia Mollo, Simona Paladino, Claudio Procaccini, Deriggio Faicchia, Gaetano Calì, Rita Genesio, Ferdinando Bonfiglio, Rita Cicatiello, Elena Polishchuk, Roman Polishchuk, Paolo Pinton, Giuseppe Matarese, Anna Conti, Lucio Nitsch
Alterations in mitochondrial activity and morphology have been demonstrated in human cells and tissues from individuals with Down syndrome (DS), as well as in DS mouse models. An impaired activity of the transcriptional coactivator PGC-1α/PPARGC1Adue to the overexpression of chromosome 21 genes, such as NRIP1/RIP140, has emerged as an underlying cause of mitochondrial dysfunction in DS. We tested the hypothesis that the activation of the PGC-1α pathway might indeed reverse this mitochondrial dysfunction.
January 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28079150/sustained-kidney-biochemical-derangement-in-treated-experimental-diabetes-a-clue-to-metabolic-memory
#19
Antonio Anax F de Oliveira, Tiago F de Oliveira, Larissa L Bobadilla, Camila C M Garcia, Carolina Maria Berra, Nadja C de Souza-Pinto, Marisa H G Medeiros, Paolo Di Mascio, Roberto Zatz, Ana Paula de M Loureiro
The occurrence of biochemical alterations that last for a long period of time in diabetic individuals even after adequate handling of glycemia is an intriguing phenomenon named metabolic memory. In this study, we show that a kidney pathway is gradually altered during the course of diabetes and remains persistently changed after late glycemic control in streptozotocin-induced diabetic rats. This pathway comprises an early decline of uric acid clearance and pAMPK expression followed by fumarate accumulation, increased TGF-β expression, reduced PGC-1α expression, and downregulation of methylation and hydroxymethylation of mitochondrial DNA...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078450/genome-wide-methylation-profiles-in-primary-intracranial-germ-cell-tumors-indicate-a-primordial-germ-cell-origin-for-germinomas
#20
Shintaro Fukushima, Satoshi Yamashita, Hisato Kobayashi, Hirokazu Takami, Kohei Fukuoka, Taishi Nakamura, Kai Yamasaki, Yuko Matsushita, Hiromi Nakamura, Yasushi Totoki, Mamoru Kato, Tomonari Suzuki, Kazuhiko Mishima, Takaaki Yanagisawa, Akitake Mukasa, Nobuhito Saito, Masayuki Kanamori, Toshihiro Kumabe, Teiji Tominaga, Motoo Nagane, Toshihiko Iuchi, Koji Yoshimoto, Masahiro Mizoguchi, Kaoru Tamura, Keiichi Sakai, Kazuhiko Sugiyama, Mitsutoshi Nakada, Kiyotaka Yokogami, Hideo Takeshima, Yonehiro Kanemura, Masahide Matsuda, Akira Matsumura, Kazuhiko Kurozumi, Keisuke Ueki, Masahiro Nonaka, Akio Asai, Nobutaka Kawahara, Yuichi Hirose, Tatusya Takayama, Yoichi Nakazato, Yoshitaka Narita, Tatsuhiro Shibata, Masao Matsutani, Toshikazu Ushijima, Ryo Nishikawa, Koichi Ichimura
Intracranial germ cell tumors (iGCTs) are the second most common brain tumors among children under 14 in Japan. The World Health Organization classification recognizes several subtypes of iGCTs, which are conventionally subclassified into pure germinoma or non-germinomatous GCTs. Recent exhaustive genomic studies showed that mutations of the genes involved in the MAPK and/or PI3K pathways are common in iGCTs; however, the mechanisms of how different subtypes develop, often as a mixed-GCT, are unknown. To elucidate the pathogenesis of iGCTs, we investigated 61 GCTs of various subtypes by genome-wide DNA methylation profiling...
January 11, 2017: Acta Neuropathologica
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