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https://www.readbyqxmd.com/read/29161661/chlorogenic-acid-prevents-diabetic-nephropathy-by-inhibiting-oxidative-stress-and-inflammation-through-modulation-of-the-nrf2-ho-1-and-nf-%C3%A4-b-pathways
#1
Liping Bao, Jushuang Li, Dongqing Zha, Lian Zhang, Ping Gao, Tao Yao, Xiaoyan Wu
Oxidative and inflammatory damage have been suggested to play important roles in the pathogenesis of diabetic nephropathy (DN). Chlorogenic acid (CGA) is one of the most abundant polyphenols and has known immunoprotective, antioxidant and anti-inflammatory properties. In the present study, animal experiments were designed to examine the protective effects of CGA in DN, and cellular experiments were designed to explore the underlying mechanisms. CGA significantly attenuated diabetic renal damage based on histological pathology and molecular biological methods...
November 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29160881/effect-of-nobiletin-on-the-mapk-nf-%C3%AE%C2%BAb-signaling-pathway-in-the-synovial-membrane-of-rats-with-arthritis-induced-by-collagen
#2
Guliang Yang, Shiming Li, Li Yuan, Yiwen Yang, Min-Hsiung Pan
Nobiletin (5,6,7,8,3',4'-hexamethoxyflavone) is a natural compound in the fruit peel of citrus fruit in the Rutaceae family. It is active in inhibiting inflammation, reducing plasma lipids and has anti-oxidative properties. In studying the effect of nobiletin on rheumatoid arthritis (RA), the collagen-induced arthritis (CIA) model on Sprague-Dawley (SD) rats was established by bovine type II collagen (BIIC), and the effect of nobiletin on RA was investigated using hematoxylin-eosin (H&E) staining, serum enzyme linked immunosorbent assay (ELISA) detection and western blotting...
November 21, 2017: Food & Function
https://www.readbyqxmd.com/read/29160745/the-unveiling-of-the-warburg-effect-and-the-inscribed-innovative-approach-to-a-radical-non-toxic-anticancer-therapy
#3
Olivia Crociani, Ilaria Marzi, Maria Grazia Cipolleschi, Antonella Mannini, Massimo Contini, Massimo Olivotto
The purpose of this research has been deciphering the Warburg paradox, the biochemical enigma unsolved since 1923. This paradox consists of the aerobic pyruvate conversion to lactate brought about by anaplastic cancer, through the metabolic pathway known as aerobic glycolysis. This pathway implies a heavy energetic waste. We solved the enigma by demonstrating that its specific character, i.e. the forced aerobic lactate exportation, represents a crucial metabolic device to counteract the cytotoxic effect produced by an excess of pyruvate at the connection of glycolysis with the Krebs cycle...
November 21, 2017: Cell Cycle
https://www.readbyqxmd.com/read/29160602/mitochondrial-ribosome-bl34-mutants-present-diminished-translation-of-cytochrome-c-oxidase-subunits
#4
Raquel Fonseca Guedes-Monteiro, José Ribamar Ferreira-Junior, Lucas Bleicher, Francisco G Nóbrega, Antoni Barrientos, Mario H Barros
Saccharomyces cerevisiae mitoribosomes are specialized in the translation of a few number of highly hydrophobic membrane proteins, components of the oxidative phosphorylation system. Mitochondrial characteristics, such as the membrane system and its redox state driven mitoribosomes evolution through great diversion from their bacterial and cytosolic counterparts. Therefore, mitoribosome presents a considerable number of mitochondrial-specific proteins, as well as new protein extensions. In this work we characterize temperature sensitive mutants of the subunit bL34 present in the 54S large subunit...
November 21, 2017: Cell Biology International
https://www.readbyqxmd.com/read/29159707/propionyl-coa-carboxylase-pcca-1-and-pccb-1-gene-deletions-in-caenorhabditis-elegans-globally-impair-mitochondrial-energy-metabolism
#5
Kimberly A Chapman, Julian Ostrovsky, Meera Rao, Stephen D Dingley, Erzsebet Polyak, Marc Yudkoff, Rui Xiao, Michael J Bennett, Marni J Falk
Propionic acidemia (PA) is a classical inborn error of metabolism with high morbidity that results from the inability of the propionyl-CoA carboxylase (PCC) enzyme to convert propionyl-CoA to methylmalonyl-CoA. PA is inherited in an autosomal recessive fashion due to functional loss of both alleles of either PCCA or PCCB. These genes are highly conserved across evolutionarily diverse species and share extensive similarity with pcca-1 and pccb-1 in the nematode, Caenorhabditis elegans. Here, we report the global metabolic effects of deletion in a single PCC gene, either pcca-1 or pccb-1, in C...
November 20, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29159335/protective-effects-of-lipoic-acid-against-acrylamide-induced-neurotoxicity-involvement-of-mitochondrial-energy-metabolism-and-autophagy
#6
Ge Song, Zhigang Liu, Luanfeng Wang, Renjie Shi, Chuanqi Chu, Man Xiang, Qi Tian, Xuebo Liu
Acrylamide (ACR) is a chronic neurotoxin that is generated in high-starch foods during heat processing. Alpha-lipoic acid (LA) is an antioxidant that occurs in most plants and animals. The objective of this study was to reveal the mechanism of ACR-triggered neurotoxicity and identify the protective role of LA in SH-SY5Y cells. In this study, LA restored ACR-stimulated depletion of glutathione content and mitochondrial membrane potential, moderated the activation of inflammatory pathways, and recovered the Keap1/Nrf2 pathway...
November 21, 2017: Food & Function
https://www.readbyqxmd.com/read/29158872/neuroprotective-and-cognitive-enhancing-effects-of-microencapsulation-of-mulberry-fruit-extract-in-animal-model-of-menopausal-women-with-metabolic-syndrome
#7
Supannika Kawvised, Jintanaporn Wattanathorn, Wipawee Thukham-Mee
Currently, the neuroprotectant and memory-enhancing agent for menopausal women with metabolic syndrome is required. Based on the advantages of polyphenolics on numerous changes observed in menopause with metabolic syndrome and the encapsulation method, we hypothesized that microencapsulated mulberry fruit extract (MME) could protect brain damage and improve memory impairment in an animal model of menopause with metabolic syndrome. To test this hypothesis, MME at doses of 10, 50, and 250 mg/kg was given to female Wistar rats which were induced experimental menopause with metabolic syndrome by bilateral ovariectomy (OVX) and fed with high-carbohydrate high-fat (HCHF) diet for 8 weeks...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29158198/vitamin-c-exerts-novel-protective-effects-against-cadmium-toxicity-in-mouse-spermatozoa-by-inducing-the-dephosphorylation-of-dihydrolipoamide-dehydrogenase
#8
Lirui Wang, Peifei Li, Yi Wen, Qiangzhen Yang, Linqing Zhen, Jieli Fu, Yuhua Li, Sisi Li, Chengxiao Han, Xinhong Li
Cadmium (Cd) has been reported to inhibit mouse sperm motility by inducing the tyrosine phosphorylation of dihydrolipoamide dehydrogenase (DLD). This study aimed to assess the potential effects of vitamin C (Vc) on ameliorating Cd-induced tyrosine phosphorylation of DLD and the specific underlying mechanism. Vc induced the dephosphorylation of DLD or inhibited the tyrosine phosphorylation of DLD. Accordingly, DLD activity, nicotinamide adenine dinucleotide hydrogen (NADH) levels, ATP levels and motility parameters were all restored to normal levels by Vc...
November 17, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/29158183/serine-prevented-high-fat-diet-induced-oxidative-stress-by-activating-ampk-and-epigenetically-modulating-the-expression-of-glutathione-synthesis-related-genes
#9
Xihong Zhou, Liuqin He, Shengnan Zuo, Yumei Zhang, Dan Wan, Ciming Long, Pan Huang, Canrong Wu, Xin Wu, Gang Liu, Yulong Yin
Serine deficiency has been observed in patients with nonalcoholic fatty liver disease (NAFLD). Whether serine supplementation has any beneficial effects on the prevention of NAFLD remains unknown. The present study was conducted to investigate the effects of serine supplementation on hepatic oxidative stress and steatosis and its related mechanisms. Forty male C57BL/6J mice (9week-old) were randomly assigned into four groups (n=10) and fed: i) a low-fat diet; ii) a low-fat diet supplemented with 1% (wt:vol) serine; iii) a high-fat (HF) diet; and iv) a HF diet supplemented with 1% serine, respectively...
November 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29158051/the-regulation-of-foxo1-and-its-role-in-disease-progression
#10
REVIEW
Ya-Qi Xing, Ang Li, Yang Yang, Xiao-Xia Li, Li-Nan Zhang, Hui-Cai Guo
Cell proliferation, apoptosis, autophagy, oxidative stress and metabolic dysregulation are the basis of many diseases. Forkhead box transcription factor O1 (FOXO1) changes in response to cellular stimulation and maintains tissue homeostasis during the above-mentioned physiological and pathological processes. Substantial evidences indicate that FOXO1's function depends on the modulation of downstream targets such as apoptosis- and autophagy-associated genes, anti-oxidative stress enzymes, cell cycle arrest genes, and metabolic and immune regulators...
November 17, 2017: Life Sciences
https://www.readbyqxmd.com/read/29156421/impaired-mitochondrial-respiration-in-human-carotid-plaque-atherosclerosis-a-potential-role-for-pink1-in-vascular-smooth-muscle-cell-energetics
#11
Craig K Docherty, Andy Carswell, Elaine Friel, John R Mercer
BACKGROUND AND AIMS: DNA damage and mitochondrial dysfunction are thought to play an essential role in ageing and the energetic decline of vascular smooth muscle cells (VSMCs) essential for maintaining plaque integrity. We aimed to better understand VSMCs and identify potentially useful compensatory pathways that could extend their lifespan. Moreover, we wanted to assess if defects in mitochondrial respiration exist in human atherosclerotic plaques and to identify the appropriate markers that may reflect a switch in VSMC energy metabolism...
November 13, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29155869/nf-%C3%AE%C2%BAb-pathways-are-involved-in-m1-polarization-of-raw-264-7-macrophage-by-polyporus-polysaccharide-in-the-tumor-microenvironment
#12
Chun-Ping Liu, Xian Zhang, Qing-Long Tan, Wen-Xing Xu, Chang-Yuan Zhou, Min Luo, Xiong Li, Run-Yue Huang, Xing Zeng
Bladder cancer is one of the most malignant tumors closely associated with macrophages. Polyporus polysaccharide (PPS) has shown excellent efficacy in treating bladder cancer with minimal side effects. However, the molecular mechanisms underlying the effects of PPS in inhibiting bladder cancer remain unclear. In this study, we used macrophages cultured alone or with T24 human bladder cancer cell culture supernatant as study models. We found that PPS enhanced the activities of IFN-γ-stimulated RAW 264.7 macrophages, as shown by the release of inducible nitric oxide synthase (INOS), secretion of tumor necrosis factor (TNF)-α and interleukin (IL)-6, phagocytosis activity, as well as expression of M1 phenotype indicators, such as CD40, CD284 and CD86...
2017: PloS One
https://www.readbyqxmd.com/read/29155213/human-umbilical-vein-endothelium-derived-exosomes-play-a-role-in-foetoplacental-endothelial-dysfunction-in-gestational-diabetes-mellitus
#13
Tamara Sáez, Rocío Salsoso, Andrea Leiva, Fernando Toledo, Paul de Vos, Marijke Faas, Luis Sobrevia
Gestational diabetes mellitus (GDM) characterizes by foetoplacental endothelial dysfunction. Human umbilical vein endothelial cells (HUVECs) from women with GDM show increased L-arginine transport via the human cationic amino acid transporter 1 (hCAT-1). Moreover, expression of endothelial nitric oxide synthase (eNOS) and nitric oxide synthesis are increased. Exosomes are increased in maternal plasma from GDM. We evaluated the role of foetoplacental endothelial exosomes on endothelial dysfunction in GDM. Exosomes were isolated from HUVECs from normal (ExN) and GDM (ExGDM) pregnancies...
November 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29155101/type-i-ifn-related-netosis-in-ataxia-telangiectasia-and-artemis-deficiency
#14
Ersin Gul, Esra Hazar Sayar, Bilgi Gungor, Fehime Kara Eroglu, Naz Surucu, Sevgi Keles, Sukru Nail Guner, Sıddıka Fındık, Esin Alpdündar, Ihsan Cihan Ayanoglu, Basak Kayaoglu, Busra Nur Geçkin, Hatice Asena Sanli, Tamer Kahraman, Cengiz Yakicier, Meltem Muftuoglu, Berna Oguz, Deniz Nazire Cagdas Ayvaz, Ihsan Gursel, Seza Ozen, Ismail Reisli, Mayda Gursel
BACKGROUND: Pathological inflammatory syndromes of unknown etiology are commonly observed in Ataxia telangiectasia (AT) and Artemis deficiency. Similar inflammatory manifestations also exist in STING-associated vasculopathy in infancy (SAVI) patients. OBJECTIVE: To test the hypothesis that the inflammation associated manifestations observed in AT and Artemis deficient patients stem from increased type I IFN signature leading to neutrophil mediated pathological damage...
November 15, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29155008/-alternative-fuels-contributing-to-mitochondrial-electron-transport-importance-of-non-classical-pathways-in-the-diversity-of-animal-metabolism
#15
REVIEW
Allison E McDonald, Nicolas Pichaud, Charles-A Darveau
The study of glycolysis, the TCA cycle, and oxidative phosphorylation in animals has yielded a wealth of information about bioenergetics. Less is known about how animals use fuels other than glucose and less characterized enzymes that are also used to provide electrons to the electron transport system. It has become clear that bioenergetic flexibility is employed by a wide variety of animals in order to successfully grow, maintain cells, and reproduce, and has contributed to the exploitation of new environments and ecological niches through evolution...
November 15, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29154926/site-specific-effects-of-apolipoprotein-e-expression-on-diet-induced-obesity-and-white-adipose-tissue-metabolic-activation
#16
Aikaterini Hatziri, Christina Kalogeropoulou, Eva Xepapadaki, Eleni Birli, Eleni A Karavia, Eugenia Papakosta, Serafoula Filou, Caterina Constantinou, Kyriakos E Kypreos
Apolipoprotein E (APOE) has been strongly implicated in the development of diet induced obesity. In the present study, we investigated the contribution of brain and peripherally expressed human apolipoprotein E3 (APOE3), the most common human isoform, to diet induced obesity. In our studies APOE3 knock-in (Apoe3(knock-in)), Apoe-deficient (apoe(-/-)) and brain-specific expressing APOE3 (Apoe3(brain)) mice were fed western-type diet for 12week and biochemical analyses were performed. Moreover, AAV-mediated gene transfer of APOE3 to apoe(-/-) mice was employed, as a means to achieve APOE3 expression selectively in periphery, since peripherally expressed APOE does not cross barrier (BBB) or blood-cerebrospinal fluid barrier (BCSFB)...
November 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29154835/sirt5-and-post-translational-protein-modifications-a-potential-therapeutic-target-for-myocardial-ischemia-reperfusion-injury-with-regard-to-mitochondrial-dynamics-and-oxidative-metabolism
#17
REVIEW
Rongjun Zou, Wanting Shi, Jun Tao, Hongmu Li, Xifeng Lin, Songran Yang, Ping Hua
SIRT5 is a sirtuin family member that participates in dynamic and reversible protein chemical modification after translation. It has pivotal roles in the regulation of numerous aspects of myocardial energy metabolism and cardiac functions. Recent studies suggest that down-regulation of this regulator significantly increased the extent of myocardial infarction during ischemia-reperfusion injury (IRI). Accordingly, SIRT5 is emerging as a major contributor to the pathogenesis of IRI and may possess therapeutic potential for reversing mitochondrial respiratory chain disturbances and cellular damage attributed to ischemia-reperfusion...
November 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29154797/caryophyllane-sesquiterpenes-inhibit-dna-damage-by-tobacco-smoke-in-bacterial-and-mammalian-cells
#18
Silvia Di Giacomo, Lorena Abete, Rossana Cocchiola, Gabriela Mazzanti, Margherita Eufemi, Antonella Di Sotto
In the present study, the ability of the natural sesquiterpene β-caryophyllene (CRY) and its metabolite β-caryophyllene oxide (CRYO) to inhibit the genotoxicity of a condensate of cigarette smoke (CSC) was evaluated both in bacterial and mammalian cells. Also, the inhibition of the CSCmediated STAT3 phosphorylation and intracellular oxidative stress was evaluated as potential chemopreventive mechanism. Under our experimental conditions, both the sesquiterpenes exhibited antimutagenic properties, being CRY the most potent compound...
November 14, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29154192/resveratrol-attenuates-testicular-apoptosis-in-type-1-diabetic-mice-role-of-akt-mediated-nrf2-activation-and-p62-dependent-keap1-degradation
#19
Yuguang Zhao, Wenjing Song, Zhenyu Wang, Zongqiang Wang, Xing Jin, Jiancheng Xu, Ling Bai, Yuying Li, Jiuwei Cui, Lu Cai
Infertility is a common complication in diabetic men, mainly due to the loss of germ cells by apoptotic cell death. However, effective and safe approaches to prevent diabetic induction of testicular apoptosis for diabetic patients have not been available. Resveratrol (RSV), a group of compounds called polyphenols from plants, has been indicated its promising used clinically for cancers and cardiovascular diseases. Therefore, the present study aimed determining whether RSV attenuates type 1 diabetes (T1D)-induced testicular apoptotic cell death in a mouse model...
November 8, 2017: Redox Biology
https://www.readbyqxmd.com/read/29153548/n-me-trichodermamide-b-isolated-from-penicillium-janthinellum-with-antioxidant-properties-through-nrf2-mediated-signaling-pathway
#20
Zhen Yang, Mei-Lin Zhu, De-Hai Li, Rong Zeng, Bing-Nan Han
A new trichodermamide-like alkaloid, N-Me-trichodermamide B (compound 1), was isolated from a marine fungus Penicillium janthinellum HDN13-309. The structure and absolute configuration of compound 1 were determined by extensive NMR analysis and the modified Mosher's method. This new alkaloid exhibited cellular protection from the H2O2-induced oxidative damage, and the mechanism study revealed that this antioxidant activity was regulated through Nrf2-mediated signaling pathway in HaCaT human keratinocytes. In addition, the inhibitor of p38 abrogated compound 1-induced phosphorylation of p38, up-expression of HO-1, and the nuclear localization of Nrf2...
October 31, 2017: Bioorganic & Medicinal Chemistry
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