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https://www.readbyqxmd.com/read/28542447/exploratory-plasma-proteomic-analysis-in-a-randomized-crossover-trial-of-aspirin-among-healthy-men-and-women
#1
Xiaoliang Wang, Ali Shojaie, Yuzheng Zhang, David Shelley, Paul D Lampe, Lisa Levy, Ulrike Peters, John D Potter, Emily White, Johanna W Lampe
Long-term use of aspirin is associated with lower risk of colorectal cancer and other cancers; however, the mechanism of chemopreventive effect of aspirin is not fully understood. Animal studies suggest that COX-2, NFκB signaling and Wnt/β-catenin pathways may play a role, but no clinical trials have systematically evaluated the biological response to aspirin in healthy humans. Using a high-density antibody array, we assessed the difference in plasma protein levels after 60 days of regular dose aspirin (325 mg/day) compared to placebo in a randomized double-blinded crossover trial of 44 healthy non-smoking men and women, aged 21-45 years...
2017: PloS One
https://www.readbyqxmd.com/read/28539336/nutritional-regulation-of-renal-lipogenic-factor-expression-in-mice-comparison-to-regulation-in-the-liver-and-skeletal-muscle
#2
Suk-Jeong Kim, Ji-Eun Kim, Yong-Woon Kim, Jong-Yeon Kim, So-Young Park
Regulation of lipogenesis by pathophysiological factors in the liver and skeletal muscle is well understood; however, regulation in the kidney is still unclear. To elucidate nutritional regulation of lipogenic factors in the kidney, we measured the renal expression of lipogenic transcriptional factors and enzymes during fasting and refeeding in chow-fed and high-fat-fed mice. We also examined the regulatory effect of the liver X receptor (LXR) on the expression of lipogenic factors. The renal gene expression of sterol regulatory element-binding protein (SREBP)-1c and fatty acid synthase (FAS) was reduced by fasting for 48 h and restored by refeeding, whereas the mRNA levels of forkhead box O (FOXO)1/3 were increased by fasting and restored by refeeding...
May 24, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28539329/aberrant-methylation-mediated-silencing-of-lncrna-meg3-functions-as-a-cerna-in-esophageal-cancer
#3
Zhiming Dong, Aili Zhang, Shengnan Liu, Fan Lu, Yanli Guo, Guoqiang Zhang, Fenglou Xu, Yabin Shi, Supeng Shen, Jia Liang, Wei Guo
Maternally expressed gene 3 (MEG3), a long non-coding RNA (lncRNA), has tumor suppressor properties and its expression is lost in several human tumors. However, its biological role in esophageal squamous cell carcinoma (ESCC) tumorigenesis is poorly defined. The present study determined the role and methylation status of MEG3 in esophageal cancer cells and ESCC clinical specimens, and further observed the competing endogenous RNA (ceRNA) activity of MEG3 in the pathogenesis and development of ESCC. Significant down-regulation of MEG3 was detected in esophageal cancer cells and ESCC tissues and the expression level of MEG3 was significantly increased in cancer cells after treated with the DNA methyltransferase inhibitor 5-Aza-dC...
May 24, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28536427/role-of-foxo1-and-apoptosis-in-pulmonary-vascular-remolding-in-a-rat-model-of-chronic-thromboembolic-pulmonary-hypertension
#4
Chaosheng Deng, Zhanghua Zhong, Dawen Wu, Yunfei Chen, Ningfang Lian, Haibo Ding, Qiaoxian Zhang, Qichang Lin, Shuang Wu
To explore the role of FoxO1 and apoptosis in a rat model of chronic thromboembolic pulmonary hypertension (CTEPH). Rats were randomly divided into a sham group (n = 45) and an experimental group (n = 45). Autologous blood clots were injected into rats three times to induce CTEPH. Rats were further divided into three subgroups: a 1-week subgroup (n = 15), a 2-week subgroup (n = 15), and a 4-week subgroup (n = 15). Mean pulmonary arterial pressure (mPAP) and histopathology were evaluated at each time point...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28535046/inhibitory-effect-of-piceatannol-on-tnf-%C3%AE-mediated-inflammation-and-insulin-resistance-in-3t3-l1-adipocytes
#5
Yanfang Li, Puyu Yang, Qimeng Chang, Jing Wang, Jie Liu, Yuan Lv, Thomas T Y Wang, Boyan Gao, Yaqiong Zhang, Liangli Lucy Yu
Piceatannol, a bioactive component in grapes and blueberry, was examined for its potential in decreasing the inflammatory activities in adipocytes using a co-cultured adipocytes and macrophages system, and suppressing TNF-α mediated inflammation and the related insulin resistance using a 3T3-L1 adipocytes model. Piceatannol treatment significantly reduced the release of inflammatory cytokines of TNF-α and MCP-1 in the co-cultured system and inhibited TNF-α induced expression of IL-6 and MCP-1 at both mRNA and protein levels in the 3T3-L1 adipocytes...
May 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28533273/akt-signaling-is-sustained-by-a-cd44-splice-isoform-mediated-positive-feedback-loop
#6
Sali Liu, Chonghui Cheng
Tumor cells nearly invariably evolve sustained PI3K/Akt signaling as an effective means to circumvent apoptosis and maintain survival. However, for those tumor cells that do not acquire PI3K/Akt mutations to achieve this end the underlying mechanisms have remained obscure. Here we describe the discovery of a splice isoform-dependent positive feedback loop that is essential to sustain PI3K/Akt signaling in breast cancer. Splice isoform CD44s promoted expression of the hyaluronan synthase HAS2 by activating the Akt signaling cascade...
May 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28529452/estradiol-suppresses-tlr4-triggered-apoptosis-of-decidual-stromal-cells-and-drives-an-anti-inflammatory-th2-shift-by-activating-sgk1
#7
Yiyun Lou, Minhao Hu, Qijing Wang, Mu Yuan, Ning Wang, Fang Le, Lejun Li, Shisi Huang, Liya Wang, Xiangrong Xu, Fan Jin
A pro-inflammatory cytokine profile at the feto-maternal interface may predispose immune maladaptation notably in early miscarriages. We investigated the involvement of estradiol (E2)-activated serum-glucocorticoid regulated kinase 1 (SGK1) in preserving the tolerogenic and pro-survival intrauterine microenvironment beneficial to gestation maintenance. Decidual SGK1 was down-regulated in early miscarriage, consistent with the lower serum E2 concentration seen in pregnancy loss. Lipopolysaccharide (LPS)/Toll-like receptors 4 (TLR4) signaling induced apoptosis and the pro-inflammatory T helper type (TH) 1 response of decidual stromal cells (DSCs) were associated with miscarriage...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28527887/mst1-deficiency-promotes-b-cell-responses-by-cd4-t-cell-derived-il-4-resulting-in-hypergammaglobulinemia
#8
Eunchong Park, Myun Soo Kim, Ju Han Song, Kyung Min Cho, Kyung-Hye Roh, Rana Lee, Tae Sung Kim
MST1 deficiency causes T and B cell lymphopenia, resulting in combined immunodeficiency. However, MST1-deficient patients also exhibit autoimmune-like symptoms such as hypergammaglobulinemia and autoantibody production. Recent studies have shown that the autoimmune responses observed in MST1-deficient patients were most likely attributable to defective regulatory T (Treg) cells instead of intrinsic signals in MST1-lacking B cells. Nevertheless, it is not determined how MST1 deficiency in T cells breaks B cell tolerance and causes systemic autoimmune-like phenotypes...
May 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28527877/esculetin-ameliorates-hepatic-fibrosis-in-high-fat-diet-induced-non-alcoholic-fatty-liver-disease-by-regulation-of-foxo1-mediated-pathway
#9
Anuradha Pandey, Priyank Raj, Santosh Kumar Goru, Almesh Kadakol, Vajir Malek, Nisha Sharma, Anil Bhanudas Gaikwad
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD), a chronic metabolic disorder is associated with oxidative stress, inflammation and fibrotic cascades. In this study, we aimed to examine the effects of Esculetin, a well-known anti-oxidant on TGF-β1 mediated liver fibrosis and FoxO1 activity. METHODS: A non-genetic murine model for NAFLD was developed by chronic high fat diet (HFD) (58% calories from fats) feeding in Wistar rats. The plasma biochemical parameters, liver function tests, oxidative stress, and histopathological alterations were assessed...
February 4, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28527875/magnolol-attenuates-the-inflammation-and-apoptosis-through-the-activation-of-sirt1-in-experimental-stroke-rats
#10
Dong-Quan Kou, Yan-Ling Jiang, Jia-Hua Qin, Yin-Hui Huang
BACKGROUND: Silent information regulator 1 (SIRT1), a histone deacetylase, plays a protective role in ischemic brain injury. Previous studies have shown that magnolol has a beneficial effect on ischemic stroke; however, the role of SIRT1 in the protective effect of magnolol against cerebral ischemia has not been investigated. METHODS: We used a middle cerebral artery occlusion model of stroke in rats. Before stroke induction, the rats received intraperitoneal injections of magnolol with or without the SIRT1 inhibitor, EX527...
January 10, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28521080/histology-fusion-status-and-outcome-in-metastatic-rhabdomyosarcoma-a-report-from-the-children-s-oncology-group
#11
Erin R Rudzinski, James R Anderson, Yueh-Yun Chi, Julie M Gastier-Foster, Caroline Astbury, Frederic G Barr, Stephen X Skapek, Douglas S Hawkins, Brenda J Weigel, Alberto Pappo, William H Meyer, Michael A Arnold, Lisa A Teot, David M Parham
BACKGROUND: Distinguishing alveolar rhabdomyosarcoma (ARMS) from embryonal rhabdomyosarcoma (ERMS) has historically been of prognostic and therapeutic importance. However, classification has been complicated by shifting histologic criteria required for an ARMS diagnosis. Children's Oncology Group (COG) studies after IRS-IV, which included the height of this diagnostic shift, showed both an increased number of ARMS and an increase in the proportion of fusion-negative ARMS. Following diagnostic standardization and histologic re-review of ARMS cases enrolled during this era, analysis of low-risk (D9602) and intermediate-risk (D9803) rhabdomyosarcoma (RMS) studies showed that fusion status rather than histology best predicts prognosis for patients with RMS...
May 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28514752/%C3%AE-msh-inhibits-adipose-inflammation-via-reducing-foxos-transcription-and-blocking-akt-jnk-pathway-in-mice
#12
Guannv Liu, Meihang Li, Muhammad Saeed, Yatao Xu, Qian Ren, Chao Sun
Alpha melanocyte stimulating hormone (αMSH) abates inflammation in multiple tissues, while Forkhead box proteins O (FoxOs) stimulate inflammatory cascade. However, the relationship between αMSH and FoxOs in adipose inflammation remains unclear. In this study, we used LPS-induced inflammation model, attempted to interpret the function of αMSH in inflammation and the interactions with FoxOs. Results indicated that upon inflammatory situation, the secretion of αMSH and the expression of its receptor MC5R were greatly decreased, but FoxOs expressions were elevated...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28512677/heterogeneity-of-proliferative-markers-in-pancreatic-%C3%AE-cells-of-patients-with-severe-hypoglycemia-following-roux-en-y-gastric-bypass
#13
Mary-Elizabeth Patti, Allison B Goldfine, Jiang Hu, Dag Hoem, Anders Molven, Jeffrey Goldsmith, Wayne H Schwesinger, Stefano La Rosa, Franco Folli, Rohit N Kulkarni
AIMS: Severe postprandial hypoglycemia with neuroglycopenia is an increasingly recognized, debilitating complication of Roux-en-Y gastric bypass (RYGB) surgery. Increased secretion of insulin and incretin hormones is implicated in its pathogenesis. Histopathologic examination of pancreas has demonstrated increased islet size and/or nuclear diameter in post-RYGB patients who underwent pancreatectomy for severe refractory hypoglycemia with neuroglycopenia (RYGB + NG). We aimed to determine whether β-cell proliferation or apoptosis is altered in RYGB + NG...
May 17, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28508859/plastic-roles-of-pericytes-in-the-blood-retinal-barrier
#14
Do Young Park, Junyeop Lee, Jaeryung Kim, Kangsan Kim, Seonpyo Hong, Sangyeul Han, Yoshiaki Kubota, Hellmut G Augustin, Lei Ding, Jin Woo Kim, Hail Kim, Yulong He, Ralf H Adams, Gou Young Koh
The blood-retinal barrier (BRB) consists of tightly interconnected capillary endothelial cells covered with pericytes and glia, but the role of the pericytes in BRB regulation is not fully understood. Here, we show that platelet-derived growth factor (PDGF)-B/PDGF receptor beta (PDGFRβ) signalling is critical in formation and maturation of BRB through active recruitment of pericytes onto growing retinal vessels. Impaired pericyte recruitment to the vessels shows multiple vascular hallmarks of diabetic retinopathy (DR) due to BRB disruption...
May 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28507478/melatonin-regulates-the-aging-mouse-hippocampal-homeostasis-via-the-sirtuin1-foxo1-pathway
#15
Anorut Jenwitheesuk, Parichart Boontem, Prapimpun Wongchitrat, Jiraporn Tocharus, Sujira Mukda, Piyarat Govitrapong
Sirtuin1 (SIRT1) and forkhead box transcription factor O subfamily 1 (FOXO1) play vital roles in the maintenance of hippocampal neuronal homeostasis during aging. Our previous study showed that melatonin, a hormone mainly secreted by the pineal gland, restored the impaired memory of aged mice. Age-related neuronal energy deficits contribute to the pathogenesis of several neurodegenerative disorders. An attempt has been made to determine whether the effect of melatonin is mediated through the SIRT1-FOXO1 pathways...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28506962/pair-feeding-but-not-insulin-phloridzin-or-rosiglitazone-treatment-curtails-markers-of-beta-cell-dedifferentiation-in-db-db-mice
#16
Emi Ishida, Ja Young Kim-Muller, Domenico Accili
Beta cell failure is a hallmark of type 2 diabetes. Among several cellular biological mechanisms of cellular dysfunction, we and others have recently proposed that dedifferentiation of beta cells can explain the slowly progressive onset and partial reversibility of beta-cell failure. Accordingly, we provided evidence of such processes in humans and experimental animal models of insulin-resistant diabetes. In this study, we asked whether beta cell dedifferentiation can be prevented with diet or pharmacological treatment of diabetes...
May 15, 2017: Diabetes
https://www.readbyqxmd.com/read/28506762/the-nuclear-phosphatase-scp4-regulates-foxo-transcription-factors-during-muscle-wasting-in-chronic-kidney-disease
#17
Xinyan Liu, Rizhen Yu, Lijing Sun, Giacomo Garibotto, Xia Lin, Yanlin Wang, Sandhya S Thomas, Rongshan Li, Zhaoyong Hu
Chronic kidney disease (CKD) and related inflammatory responses stimulate protein-energy wasting, a complication causing loss of muscle mass. Primarily, muscle wasting results from accelerated protein degradation via autophagic/lysosomal and proteasomal pathways, but mechanisms regulating these proteolysis pathways remain unclear. Since dephosphorylation of FoxOs regulates ubiquitin/proteasome protein metabolism, we tested whether a novel nuclear phosphatase, the small C-terminal domain phosphatase (SCP) 4, regulates FoxOs signaling and, in turn, muscle wasting...
May 12, 2017: Kidney International
https://www.readbyqxmd.com/read/28505239/foxo1-promotes-mitophagy-in-the-podocytes-of-diabetic-male-mice-via-the-pink1-parkin-pathway
#18
Wen Li, Mengmeng Du, Qingzhu Wang, Xiaojun Ma, Lina Wu, Feng Guo, Hongfei Ji, Fengjuan Huang, Guijun Qin
We recently showed that Forkhead-box class O1 (FoxO1) activation protects against high glucose-induced injury by preventing mitochondrial dysfunction in the rat kidney cortex. In addition, FoxO1 has been reported to mediate PINK1 transcription and promote autophagy in response to mitochondrial oxidative stress in murine cardiomyocytes. In this study, we ascertained whether over-expressing FoxO1 in the kidney cortex reverses pre-established diabetic nephropathy in animal models. The effect of FoxO1 on mitophagy signaling pathways was evaluated in mouse podocytes...
May 12, 2017: Endocrinology
https://www.readbyqxmd.com/read/28499891/sapho-autophagy-il-1-foxo1-and-propionibacterium-cutibacterium-acnes
#19
Jean-Marie Berthelot, Stéphane Corvec, Gilles Hayem
Overt infection by Propionibacterium acnes is lacking in many SAPHO syndromes, and antibiotics have only a transient and incomplete effect, either in SAPHO syndrome or acne. As several auto-inflammatory bone disorders sharing over-production of IL-1β can mimic SAPHO, this syndrome could partly depend on genetically encoded overproduction of IL-1β. However, cyclic intracellular infections, mostly by P. acnes, can contribute to the enhanced IL-1β release by some skin cells, and probably by bone cells. P. acnes is indeed a powerful trigger of NLRP3-inflammasome activation and IL-1β, leading to osteitis and enhanced mesenchymal cells differentiation in osteoblasts...
May 9, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28499186/effect-of-betaine-on-hepatic-insulin-resistance-through-foxo1-induced-nlrp3-inflammasome
#20
Dae Hyun Kim, Seong Min Kim, Bonggi Lee, Eun Kyeong Lee, Ki Wung Chung, Kyoung Mi Moon, Hye Jin An, Kyung Mok Kim, Byung Pal Yu, Hae Young Chung
In the present study, we attempted to elucidate whether molecular modulation of inflammation by betaine through the forkhead box O1 (FOXO1)-induced NLRP3 inflammasome improves insulin resistance. Betaine is a major water-soluble component of Lycium chinense. It mainly functions as an oxidative metabolite of choline by suppressing superoxide-induced free radicals by donating methyl groups. The FOXO1 transcription factor regulates various genes involved in cellular metabolic processes related to cell death as well as oxidative stress responses through binding to the thioredoxin-interacting protein (TXNIP)...
April 22, 2017: Journal of Nutritional Biochemistry
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