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https://www.readbyqxmd.com/read/28644716/the-effects-of-acute-carbohydrate-and-caffeine-feeding-strategies-on-cycling-efficiency
#1
Matthew Cole, James G Hopker, Jonathan D Wiles, Damian A Coleman
To assess the effect of carbohydrate and caffeine on gross efficiency (GE), 14 cyclists (V̇O2max 57.6 ± 6.3 ml.kg(-1.)min(-1)) completed 4 × 2-hour tests at a submaximal exercise intensity (60% Maximal Minute Power). Using a randomized, counter-balanced crossover design, participants consumed a standardised diet in the 3-days preceding each test and subsequently ingested either caffeine (CAF), carbohydrate (CHO), caffeine+carbohydrate (CAF+CHO) or water (W) during exercise whilst GE and plasma glucose were assessed at regular intervals (~30 mins)...
June 23, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28629764/oral-versus-topical-calcium-channel-blockers-for-chronic-anal-fissure-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#2
REVIEW
Shaheel M Sahebally, Khalid Ahmed, Raminta Cerneveciute, Asif Iqbal, Stewart R Walsh, Myles R Joyce
BACKGROUND: Chemical sphincterotomy with pharmacological agents is recommended as first line therapy for chronic anal fissures (CAF). Calcium channel blockers (CCB) are associated with similar efficacy but fewer side effects compared to nitrates. However, the optimal formulation (oral versus topical) is unknown. We aimed to perform a systematic review and meta-analysis to compare the effectiveness of oral and topical CCB in the treatment of CAF. METHODS: PubMed and Embase online databases were searched for relevant articles...
June 16, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28625953/the-relationship-between-the-expressions-of-tumor-associated-fibroblasts-cav-1-and-mct4-and-the-prognosis-of-papillary-carcinoma-of-breast
#3
Yuanyuan Zhai, Lijun Chai, Jianzhong Chen
The aim of this study was to evaluate the expression levels of Cav-1 and MCT4 in the tumor stroma CAFs. Immunohistochemical method was used to detect the expression of Cav-1 and MCT4 in 86 cases of IMPC, with 105 cases of non-specific invasive ductal carcinoma (IDC-NOS) as control. Their differential expression in different histological types were compared and relationship between the expression of Cav-1 and IMPC in the MCT4 and the main pathological features such as age, tumor size and histological grades were analyzed...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28609501/coronally-advanced-flap-technique-to-treat-class-i-and-ii-gingival-recession-in-combination-with-connective-tissue-graft-or-equine-collagen-matrix-a-retrospective-study
#4
Giacomo Tarquini
This retrospective study aimed to compare the effectiveness of an equine collagen matrix (ECM) with that of a subepithelial connective tissue graft (CTG) in patients affected by Class I and II gingival recessions treated with a coronally advanced flap (CAF) technique. Records of 50 consecutive patients were analyzed. Recession depth, probing depth, keratinized tissue width, and percentage of root coverage had been recorded at baseline and at the 1-year follow-up. The number of patients that achieved complete root coverage was also assessed...
July 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28605656/metabolism-shapes-the-tumor-microenvironment
#5
REVIEW
Miguel Reina-Campos, Jorge Moscat, Maria Diaz-Meco
Tumors are strongly influenced by the surrounding normal tissue, which forms a specialized niche termed the tumor microenvironment (TME). The TME is modeled by cancer cells for their own benefit through a complex array of interactions. The identification of new forms of communication within the TME, which are dependent on the tumor's metabolic activity, has expanded our understanding of this heterocellular regulation and has revealed potential therapeutic targets. This review will summarize recent findings on the metabolic regulation of tumor cells by the TME...
June 9, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28605029/the-pancreatic-cancer-microenvironment-a-true-double-agent
#6
REVIEW
Laleh G Melstrom, Marcela D Salazar, Don J Diamond
The tumor microenvironment in pancreatic cancer is a complex balance of pro- and anti-tumor components. The dense desmoplasia consists of immune cells, extracellular matrix, growth factors, cytokines, and cancer associated fibroblasts (CAF) or pancreatic stellate cells (PSC). There are a multitude of targets including hyaluronan, angiogenesis, focal adhesion kinase (FAK), connective tissue growth factor (CTGF), CD40, chemokine (C-X-C motif) receptor 4 (CXCR-4), immunotherapy, and Vitamin D. The developing clinical therapeutics will be reviewed...
June 12, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28598402/cognitive-performance-enhancement-induced-by-caffeine-carbohydrate-and-guarana-mouth-rinsing-during-submaximal-exercise
#7
Laura Pomportes, Jeanick Brisswalter, Laurence Casini, Arnaud Hays, Karen Davranche
The aim of this study was to investigate the influence of serial mouth rinsing (MR) with nutritional supplements on cognitive performance (i.e., cognitive control and time perception) during a 40-min submaximal exercise. Twenty-four participants completed 4 counterbalanced experimental sessions, during which they performed MR with either placebo (PL), carbohydrate (CHO: 1.6 g/25 mL), guarana complex (GUAc: 0.4 g/25 mL) or caffeine (CAF: 67 mg/25 mL) before and twice during exercise. The present study provided some important new insights regarding the specific changes in cognitive performance induced by nutritional supplements...
June 9, 2017: Nutrients
https://www.readbyqxmd.com/read/28596490/a-genetic-polymorphism-repurposes-the-g-protein-coupled-and-membrane-associated-estrogen-receptor-gper-to-a-transcription-factor-like-molecule-promoting-paracrine-signaling-between-stroma-and-breast-carcinoma-cells
#8
Marco Pupo, Alexandre Bodmer, Melissa Berto, Marcello Maggiolini, Pierre-Yves Dietrich, Didier Picard
GPER is a membrane-associated estrogen receptor of the family of G-protein coupled receptors. For breast cancer, the contribution of GPER to promoting the proliferation and migration of both carcinoma cells and cancer-associated fibroblasts (CAFs) in response to estrogen and other agonists has extensively been investigated. Intriguingly, GPER was previously found to be localized to the nucleus in one isolate of breast CAFs. Moreover, this nuclear GPER was shown to bind regulatory sequences of cancer-relevant target genes and to induce their expression...
May 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28594480/comparison-of-drug-benefits-provided-by-veterans-affairs-canada-and-the-canadian-forces-health-services-group
#9
Matthew Chow, Charles J Wicks, Janice Ma, Sylvain Grenier
BACKGROUND: Drug benefits are provided at public expense to all actively serving Canadian Armed Forces (CAF) personnel, with ongoing drug coverage offered by Veterans Affairs Canada (VAC) for selected conditions following termination of employment. Differences in drug coverage between these programs could introduce risks for treatment disruption. OBJECTIVES: Work was undertaken to establish a process that would allow systematic comparison of the entire VAC and CAF formularies, and to identify and explain discordant listings in 14 therapeutic categories that pose risk of adverse outcomes with sudden treatment interruption...
May 23, 2017: Journal of Population Therapeutics and Clinical Pharmacology
https://www.readbyqxmd.com/read/28581528/dna-methylation-variations-are-required-for-epithelial-to-mesenchymal-transition-induced-by-cancer-associated-fibroblasts-in-prostate-cancer-cells
#10
C Pistore, E Giannoni, T Colangelo, F Rizzo, E Magnani, L Muccillo, G Giurato, M Mancini, S Rizzo, M Riccardi, N Sahnane, V Del Vescovo, K Kishore, M Mandruzzato, F Macchi, M Pelizzola, M A Denti, D Furlan, A Weisz, V Colantuoni, P Chiarugi, I M Bonapace
Widespread genome hypo-methylation and promoter hyper-methylation of epithelium-specific genes are hallmarks of stable epithelial-to-mesenchymal transition (EMT), which in prostate cancer (PCa) correlates with castration resistance, cancer stem cells generation, chemoresistance and worst prognosis. Exploiting our consolidated 'ex-vivo' system, we show that cancer-associated fibroblasts (CAFs) released factors have pivotal roles in inducing genome methylation changes required for EMT and stemness in EMT-prone PCa cells...
June 5, 2017: Oncogene
https://www.readbyqxmd.com/read/28574782/rna-based-ovarian-cancer-research-from-a-gene-to-systems-biomedicine-perspective
#11
Esra Gov, Medi Kori, Kazim Yalcin Arga
Ovarian cancer remains the leading cause of death from a gynecologic malignancy, and treatment of this disease is harder than any other type of female reproductive cancer. Improvements in the diagnosis and development of novel and effective treatment strategies for complex pathophysiologies, such as ovarian cancer, require a better understanding of disease emergence and mechanisms of progression through systems medicine approaches. RNA-level analyses generate new information that can help in understanding the mechanisms behind disease pathogenesis, to identify new biomarkers and therapeutic targets and in new drug discovery...
August 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28572538/twist1-is-highly-expressed-in-cancer-associated-fibroblasts-of-esophageal-squamous-cell-carcinoma-with-a-prognostic-significance
#12
So-Young Yeo, Sang-Yun Ha, Keun-Woo Lee, Yan Cui, Zhao-Ting Yang, Yan-Hua Xuan, Seok-Hyung Kim
Cancer-associated fibroblasts (CAFs) play important roles in cancer progression. Twist1 was recently reported to be a key regulator of CAFs in gastric cancer, but its role in other types of cancer remains unclear, especially for esophageal squamous cell carcinoma (ESCC). We assessed the Twist1 expression on stromal fibroblasts using immunohistochemistry in 169 tissue specimens from ESCC patients, and performed in vitro and in vivo experiments to confirm the role of Twist1 in CAFs of ESCC. And we investigated the biological pathways that are activated in Twist1-high ESCC using The Cancer Genome Atlas (TCGA) data...
May 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28569881/high-energy-pulse-stacking-via-regenerative-pulse-burst-amplification
#13
Ignas Astrauskas, Edgar Kaksis, Tobias Flöry, Giedrius Andriukaitis, Audrius Pugžlys, Andrius Baltuška, John Ruppe, Siyun Chen, Almantas Galvanauskas, Tadas Balčiūnas
Here we present a coherent pulse stacking approach for upscaling the energy of a solid-state femtosecond chirped pulse amplifier. We demonstrate pulse splitting into four replicas, amplification in a burst-mode regenerative Yb:CaF<sub>2</sub> amplifier, designed to overcome intracavity optical damage by colliding pulse replicas, and coherent combining into a single millijoule level pulse. The thresholds of pulse-burst-induced damage of optical elements are experimentally investigated. The scheme allows achieving an enhancement factor of 2...
June 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28569790/human-cancer-associated-fibroblasts-enhance-glutathione-levels-and-antagonize-drug-induced-prostate-cancer-cell-death
#14
Emarndeena H Cheteh, Martin Augsten, Helene Rundqvist, Julie Bianchi, Victoria Sarne, Lars Egevad, Vladimir Jn Bykov, Arne Östman, Klas G Wiman
Drug resistance is a major problem in cancer therapy. A growing body of evidence demonstrates that the tumor microenvironment, including cancer-associated fibroblasts (CAFs), can modulate drug sensitivity in tumor cells. We examined the effect of primary human CAFs on p53 induction and cell viability in prostate cancer cells on treatment with chemotherapeutic drugs. Co-culture with prostate CAFs or CAF-conditioned medium attenuated DNA damage and the p53 response to chemotherapeutic drugs and enhanced prostate cancer cell survival...
June 1, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28554761/roles-of-micrornas-in-cancer-associated-fibroblasts-of-gastric-cancer
#15
REVIEW
Yu Yan, Ruifen Wang, Wenbin Guan, Meng Qiao, Lifeng Wang
Cancer associated fibroblasts (CAFs) are a key component of the tumor microenvironment (TME). They play critical roles in the occurrence and development of gastric cancer (GC) through controlling various cytokines secretion and direct cell-to-cell interaction. However, the underlying mechanism of CAFs in tumor progression has not been entirely elucidated. MicroRNAs (miRNAs) as important factors have a central role in the interplay between tumor cell and TME. Recent studies also highlight that the aberrant expression of miRNAs in CAFs is involved in multiple functions in tumorigenesis and malignant process of GC...
March 8, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28553956/autocrine-wnt2-signaling-in-fibroblasts-promotes-colorectal-cancer-progression
#16
N Kramer, J Schmöllerl, C Unger, H Nivarthi, A Rudisch, D Unterleuthner, M Scherzer, A Riedl, M Artaker, I Crncec, D Lenhardt, T Schwarz, B Prieler, X Han, M Hengstschläger, J Schüler, R Eferl, R Moriggl, W Sommergruber, H Dolznig
The canonical WNT signaling pathway is crucial for intestinal stem cell renewal and aberrant WNT signaling is an early event in colorectal cancer (CRC) development. Here, we show for the first time that WNT2 is one of the most significantly induced genes in CRC stroma as compared to normal stroma. The impact of stromal WNT2 on carcinoma formation or progression was not addressed so far. Canonical WNT/β-catenin signaling was assessed using a 7TGP-reporter construct. Furthermore, effects of WNT2 on fibroblast migration and invasion were determined using siRNA-mediated gene silencing...
May 29, 2017: Oncogene
https://www.readbyqxmd.com/read/28553742/antiribonuclease-h2-antibodies-are-an-immune-biomarker-for-systemic-lupus-erythematosus
#17
Kazuhisa Nozawa, Kentaro Doe, Kaori Uomori, Iwao Sekigawa, Yoshinari Takasaki, Ken Yamaji, Naoto Tamura
We previously reported that autoantibodies against the proliferating cell nuclear antigen protein (PCNA)-binding protein chromatin assembly factor-1 (CAF-1) are specifically found in patients with systemic lupus erythematosus (SLE). PCNA and its complex constituents elicit autoimmune responses in patients with SLE, suggesting that autoantibody diversification likely occurs owing to epitope spreading. Therefore, we sought to clarify whether patients with SLE exhibit an autoimmune response to Ribonuclease H2 (RNase H2), another PCNA-binding protein that regulates cell division...
May 27, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28544627/epithelial-to-mesenchymal-transition-transcription-factors-in-cancer-associated-fibroblasts
#18
REVIEW
Josep Baulida
Beyond inducing epithelial-to-mesenchymal transcription (EMT), transcriptional factors of the Snail, ZEB and Twist families (EMT-TFs) control global plasticity programs affecting cell stemness and fate. Literature addressing the reactivation of these factors in adult tumour cells is very extensive, as they enable cancer cell plasticity and fuel both tumour initiation and metastatic spread. Incipient data reveal that EMT-TFs are also expressed in fibroblasts, providing these with additional properties. Here, I will review recent reports on the expression of EMT-TFs in cancer-associated fibroblasts (CAFs)...
May 24, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28542982/cancer-associated-fibroblast-derived-lumican-promotes-gastric-cancer-progression-via-the-integrin-%C3%AE-1-fak-signaling-pathway
#19
Xiaofeng Wang, Quan Zhou, Zhenjia Yu, Xiongyan Wu, Xuehua Chen, Jianfang Li, Chen Li, Min Yan, Zhenggang Zhu, Bingya Liu, Liping Su
Gastric cancer (GC) is one of the most frequent malignant tumors worldwide and is associated with high invasiveness, high metastasis and poor prognosis. Cancer-associated fibroblasts (CAFs), residing around tumor cells in tumor stroma, are important modifiers of tumor initiation and progression. However, the molecular mechanisms by which CAF's modulate tumor development have yet not to be characterized in GC. Here we performed tissue assay analyses identifying that Lumican, an extracellular matrix protein, is highly expressed in human gastric CAFs and its expression is positively associated with depth of invasion, lymph node metastasis, TNM stage and poor survival rate of GC...
May 23, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28538690/dysregulation-of-mirna-expression-in-cancer-associated-fibroblasts-cafs-and-its-consequences-on-the-tumor-microenvironment
#20
REVIEW
Maren Schoepp, Anda Jana Ströse, Jörg Haier
The tumor microenvironment, including cancer-associated fibroblasts (CAF), has developed as an important target for understanding tumor progression, clinical prognosis and treatment responses of cancer. Cancer cells appear to transform normal fibroblasts (NF) into CAFs involving direct cell-cell communication and epigenetic regulations. This review summarizes the current understanding on miR involvement in cancer cell-tumor environment/stroma communication, transformation of NFs into CAFs, their involved targets and signaling pathways in these interactions; and clinical relevance of CAF-related miR expression profiles...
May 24, 2017: Cancers
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