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https://www.readbyqxmd.com/read/28516322/do-functional-diversity-and-trait-dominance-determine-carbon-storage-in-an-altered-tropical-landscape
#1
Achim Häger, Gerardo Avalos
Altered landscapes play a major role in biodiversity conservation and carbon (C) storage in the tropics. There is increasing evidence that C storage potential is controlled by tree functional diversity, but underlying mechanisms are debated. We analyzed the effects of trait dominance (mass-ratio hypothesis), species diversity, and trait variation (species complementarity) on C storage in the soils and vegetation of 20 agroforestry systems (AFS) and seven forested sites in Costa Rica. AFS consisted of organic and conventional coffee farms and pastures with trees...
May 17, 2017: Oecologia
https://www.readbyqxmd.com/read/28499502/sesamin-encouraging-effects-on-chondrogenic-differentiation-of-human-amniotic-fluid-derived-mesenchymal-stem-cells
#2
Suteera Narakornsak, Sirinda Aungsuchawan, Peeraphan Pothacharoen, Runchana Markmee, Waleephan Tancharoen, Tanongsak Laowanitwattana, Chawapon Thaojamnong, Lamaiporn Peerapapong, Nonglak Boonma, Witoon Tasuya, Junjira Keawdee, Naree Poovachiranon
Worldwide, the most recognized musculoskeletal degenerative disease is osteoarthritis (OA). Sesamin, a major abundant lignan compound present in Sesamun Indicum Linn, has been described for its various pharmacological effects and health benefits. However, the promoting effects of sesamin on chondrogenic differentiation have not yet been observed. Herein, the aim of this study was to investigate the effects of sesamin on cell cytotoxicity and the potent supporting effects on chondrogenic differentiation of human amniotic fluid-derived mesenchymal stem cells (hAF-MSCs)...
May 9, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28497560/untargeted-metabolomic-analysis-of-capsicum-spp-by-gc-ms
#3
Bianca Camargo Aranha, Jessica Fernanda Hoffmann, Rosa Lia Barbieri, Cesar Valmor Rombaldi, Fábio Clasen Chaves
INTRODUCTION: In order to conserve the biodiversity of Capsicum species and find genotypes with potential to be utilised commercially, Embrapa Clima Temperado maintains an active germplasm collection (AGC) that requires characterisation, enabling genotype selection and support for breeding programmes. OBJECTIVE: The objective of this study was to characterise pepper accessions from the Embrapa Clima Temperado AGC and differentiate species based on their metabolic profile using an untargeted metabolomics approach...
May 11, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28493119/co2-sensing-in-fungi-at-the-heart-of-metabolic-signaling
#4
REVIEW
Ronny Martin, Susann Pohlers, Fritz A Mühlschlegel, Oliver Kurzai
Adaptation to the changing environmental CO2 levels is essential for all living cells. In particular, microorganisms colonizing and infecting the human body are exposed to highly variable concentrations, ranging from atmospheric 0.04 to 5% and more in blood and specific host niches. Carbonic anhydrases are highly conserved metalloenzymes that enable fixation of CO2 by its conversion into bicarbonate. This process is not only crucial to ensure the supply of adequate carbon amounts for cellular metabolism, but also contributes to several signaling processes in fungi, including morphology and communication...
May 10, 2017: Current Genetics
https://www.readbyqxmd.com/read/28476062/patient-reported-outcomes-following-single-and-multiple-radius-total-knee-replacement-a-randomized-controlled-trial
#5
Nadeem Mushtaq, Alexander D Liddle, David Isaac, Katherine Dillow, Paul Gill
Although single-radius (SR) designs of total knee replacement (TKR) have theoretical benefits, the clinical advantage conferred by such designs is unknown. The aim of this randomized, controlled study was to compare the short-term clinical outcomes of the two design rationales. A total of 105 knees were randomized to receive either a single radius (Scorpio, Stryker; SR Group) or multiple radius (AGC, Zimmer Biomet; MR group) TKR. Patient-reported outcomes (Oxford Knee Score [OKS] and Knee Society Score [KSS]) were collected at 6 weeks, 6 months, and 1 year following surgery...
May 5, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28473255/inhibition-of-akt-and-other-agc-kinases-a-target-for-clinical-cancer-therapy
#6
REVIEW
Vincent Prêtre, Andreas Wicki
AGC kinases have been identified to contribute to cancer development and progression. Currently, most AGC inhibitors in clinical development are Akt inhibitors such as MK-2206 or GDC-0068, which are known to promote cell growth arrest and to sensitize cancer cells to radiotherapy. Response rates in clinical trials with single agent Akt inhibitors are typically low. The observed adverse events are within the expected limits for compounds inhibiting the PI3K-mTOR axis. Preclinical and early clinical data for combination therapies are accumulating...
May 1, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28466360/phase-1-study-of-sulfasalazine-and-cisplatin-for-patients-with-cd44v-positive-gastric-cancer-refractory-to-cisplatin-epoc1407
#7
Kohei Shitara, Toshihiko Doi, Osamu Nagano, Miki Fukutani, Hiromi Hasegawa, Shogo Nomura, Akihiro Sato, Takeshi Kuwata, Kai Asai, Yasuaki Einaga, Kenji Tsuchihashi, Kentaro Suina, Yusuke Maeda, Hideyuki Saya, Atsushi Ohtsu
A previous dose-escalation study of sulfasalazine (SSZ), an inhibitor of cystine-glutamate exchange transporter xc (-), in the variant form of CD44 (CD44v)-positive cancer stem cells (CSCs) suggested that administration of SSZ induces the reduction of CD44v-positive cells and intracellular reduced glutathione (GSH) levels in patients with advanced gastric cancer (AGC). Here we report a study to evaluate SSZ in combination with cisplatin in patients with CD44v-expressing AGC refractory to cisplatin. SSZ was given by oral administration four times daily with 2 weeks on and 1 week off...
May 2, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28451065/incidence-of-venous-thromboembolism-and-the-role-of-d-dimer-as-predictive-marker-in-patients-with-advanced-gastric-cancer-receiving-chemotherapy-a-prospective-study
#8
Kwonoh Park, Baek-Yeol Ryoo, Min-Hee Ryu, Sook Ryun Park, Myoung Joo Kang, Jeong Hye Kim, Seungbong Han, Yoon-Koo Kang
AIM: To investigated the incidence and risk factors of venous thromboembolism (VTE) in patients with advanced gastric cancer (AGC) receiving chemotherapy. METHODS: All consecutive chemotherapy-naïve patients with AGC who would receive palliative chemotherapy between November 2009 and April 2012 in our hospital were recruited. Their pretreatment clinical and laboratory variables, including D-dimer, were recorded. The frequency of VTE development and survival rates during each chemotherapy cycle and regularly thereafter were assessed...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28445935/inhibition-of-mtorc2-component-rictor-impairs-tumor-growth-in-pancreatic-cancer-models
#9
Katharina M Schmidt, Claus Hellerbrand, Petra Ruemmele, Christoph W Michalski, Bo Kong, Alexander Kroemer, Christina Hackl, Hans J Schlitt, Edward K Geissler, Sven A Lang
Mammalian Target of Rapamycin complex 2 (mTORC2) and its regulatory component Rapamycin-insensitive companion of mTOR (RICTOR) are increasingly recognized as important players in human cancer development and progression. However, the role of RICTOR in human pancreatic ductal adenocarcinoma (PDAC) is unclear so far. Here, we sought to analyze the effects of RICTOR inhibition in human pancreatic cancer cell lines in vitro and in vivo. Furthermore, RICTOR expression was determined in human PDAC samples. Results demonstrate that depletion of RICTOR with siRNA (transient knock-down) or shRNA (stable knock-down) has an inhibitory effect on tumor growth in vitro...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445270/pooled-analysis-on-the-necessity-of-random-4-quadrant-cervical-biopsies-and-endocervical-curettage-in-women-with-positive-screening-but-negative-colposcopy
#10
Shang-Ying Hu, Wen-Hua Zhang, Shu-Min Li, Nan Li, Man-Ni Huang, Qin-Jing Pan, Xun Zhang, Ying Han, Fang-Hui Zhao, Wen Chen, You-Lin Qiao
Controversy remains over whether random cervical biopsies and endocervical curettage (ECC) should be used in women with positive screening but negative colposcopy. Our paper aims to determine the indications for random biopsies and ECC among these screened positive women.Three thousand two hundred thirteen women with any positive screening test result but negative colposcopy, who received random 4-quadrant biopsies, were pooled from 17 population-based cervical cancer screening studies done in China from 1999 to 2008...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28424889/quality-of-life-with-biweekly-docetaxel-and-capecitabine-in-advanced-gastro-oesophageal-cancer
#11
E A Korkeila, T Salminen, R Kallio, M Mikkola, P Auvinen, S Pyrhönen, R Ristamäki
PURPOSE: This study aimed to evaluate the feasibility and tolerability of biweekly docetaxel with capecitabine as first-line treatment in advanced gastro-oesophageal cancer. METHODS: Fifty-three patients at median age of 61 years with advanced gastric cancer were included in this prospective, non-randomized, multicentre phase II trial to receive intravenous docetaxel 50 mg/m(2) on days 1 and 15, and oral capecitabine 1250 mg/m(2) every 12 h, on days 1-7 and 15-21 of each 28-day cycle...
April 20, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28423719/ampk%C3%AE-phosphatase-ppm1e-upregulation-in-human-gastric-cancer-is-required-for-cell-proliferation
#12
Min-Bin Chen, Yuan-Yuan Liu, Li-Bo Cheng, Jian-Wei Lu, Ping Zeng, Pei-Hua Lu
Activation of AMP-activated protein kinase (AMPK) is a valuable anti-cancer strategy. In the current study, we tested expression and potential function of Ca2+/calmodulin-dependent protein kinase phosphatase (Ppm1E), an AMPKα phosphatase, in human gastric cancers. Ppm1E expression was elevated in human gastric cancer tissues (vs. normal tissues), which was correlated with AMPK (p-AMPKα, Thr-172) dephosphorylation and mTOR complex 1 (mTORC1) activation. Ppm1E upregulation, AMPK inhibition and mTORC1 activation were also observed in human gastric cancer cell lines (AGS, HGC-27, and SNU601)...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415835/the-role-of-chemotherapy-in-unresectable-or-metastatic-adenocarcinoma-of-the-stomach-and-gastroesophageal-junction
#13
Mustafa Bozkurt, Fatemeh G Amlashi, Mariela Blum Murphy
Gastric cancer including gastro-esophageal junction adenocarcinomas are most challenging and deadly cancers of the gastrointestinal tract. Gastric cancer has a fatality-to-case ratio of 0.66, translating that nearly two thirds of newly diagnosed patients will have disseminated disease and in need of systemic therapy (1). Advanced gastric adenocarcinoma (AGC) is a heterogenous disease with differences in geographical distribution, histopathology, and molecular subtypes. Fluoropyrimidines (5-FU, S-1, and capecitabine), platinum compounds (cisplatin, oxaliplatin), taxanes (paclitaxel, docetaxel), and the topoisomerase inhibitory irinotecan are active drugs against AGC...
April 14, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28404551/endocervical-gastric-type-adenocarcinoma-an-unrelated-hpv-tumour-difficulties-in-screening-and-diagnosis
#14
Priscila Carneiro Lima, Julio Teixeira, Guilherme Nogueira Aires, Liliana De Angelo Andrade
Gastric-type adenocarcinoma of the cervix (GAS) is an uncommon and aggressive tumour unrelated to human papillomavirus (HPV) infection with distinctive histological and immunohistochemical characteristics. GAS may be associated with lobular endocervical glandular hyperplasia (LEGH), another unusual lesion. We report a case of a 59-year-old woman with screening cytology 'AGC-Neo' and cervical conisation exhibiting cervical intraepithelial neoplasia grade 1, extensive LEGH and canal sampling with abundant mucinous cells...
April 11, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28400999/mtor-function-and-therapeutic-targeting-in-breast-cancer
#15
REVIEW
Stephen H Hare, Amanda J Harvey
The mTOR pathway was discovered in the late 1970s after the compound and natural inhibitor of mTOR, rapamycin was isolated from the bacterium Streptomyces hygroscopicus. mTOR is serine/threonine kinase belonging to the phosphoinositide 3-kinase related kinase (PIKK) family. It forms two distinct complexes; mTORC1 and mTORC2. mTORC1 has a key role in regulating protein synthesis and autophagy whilst mTORC2 is involved in regulating kinases of the AGC family. mTOR signaling is often over active in multiple cancer types including breast cancer...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28393278/anthracycline-based-triplets-do-not-improve-the-efficacy-of-platinum-fluoropyrimidine-doublets-in-first-line-treatment-of-advanced-gastric-cancer-real-world-data-from-the-agamemon-national-cancer-registry
#16
A Carmona-Bayonas, P Jiménez-Fonseca, A Custodio, M Sánchez Cánovas, R Hernández, C Pericay, I Echavarria, A Lacalle, L Visa, A Rodríguez Palomo, M Mangas, J M Cano, E Buxo, F Álvarez-Manceñido, T García, J E Lorenzo, M Ferrer-Cardona, A Viudez, A Azkarate, A Ramchandani, D Arias, F Longo, C López, R Sánchez Bayona, M L Limón, A Díaz-Serrano, A Fernández Montes, P Sala, P Cerdá, F Rivera, J Gallego
BACKGROUND: Although anthracycline-based triplets are one of the most widely used schedules to treat advanced gastric cancer (AGC), the benefit of including epirubicin in these therapeutic combinations remains unknown. This study aims to evaluate both the efficacy and tolerance of triplets with epirubicin vs. doublets with platinum-fluoropyrimidine in a national AGC registry. METHODS: Patients with AGC treated with polychemotherapy without trastuzumab at 28 hospitals in Spain between 2008 and 2016 were included...
April 9, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28389797/laparoscopic-subtotal-gastrectomy-for-advanced-gastric-cancer-technical-aspects-and-surgical-nutritional-and-oncological-outcomes
#17
Masaya Nakauchi, Koichi Suda, Kenichi Nakamura, Susumu Shibasaki, Kenji Kikuchi, Tetsuya Nakamura, Shinichi Kadoya, Yoshinori Ishida, Kazuki Inaba, Keizo Taniguchi, Ichiro Uyama
BACKGROUND: Higher morbidity in total gastrectomy than in distal gastrectomy has been reported, but laparoscopic subtotal gastrectomy (LsTG) has been reported to be safe and feasible in early gastric cancer (GC). We determined the surgical, nutritional and oncological outcomes of LsTG for advanced gastric cancer (AGC). METHODS: Of the 816 consecutive patients with GC who underwent radical gastrectomy at our institution between 2008 and 2012, 253 who underwent curative laparoscopic gastrectomy (LG) for AGC were enrolled...
April 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28377748/evidence-for-contemporary-switching-of-the-o-antigen-gene-cluster-between-shiga-toxin-producing-escherichia-coli-strains-colonizing-cattle
#18
Lutz Geue, Christian Menge, Inga Eichhorn, Torsten Semmler, Lothar H Wieler, Derek Pickard, Christian Berens, Stefanie A Barth
Shiga toxin-producing Escherichia coli (STEC) comprise a group of zoonotic enteric pathogens with ruminants, especially cattle, as the main reservoir. O-antigens are instrumental for host colonization and bacterial niche adaptation. They are highly immunogenic and, therefore, targeted by the adaptive immune system. The O-antigen is one of the most diverse bacterial cell constituents and variation not only exists between different bacterial species, but also between individual isolates/strains within a single species...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28373297/regulation-of-protein-interactions-by-mob1-phosphorylation
#19
Shawn Xiong, Amber L Couzens, Michelle J Kean, Daniel Y Mao, Sebastian Guettler, Igor Kurinov, Anne-Claude Gingras, Frank Sicheri
MOB1 is a multifunctional protein best characterized for its integrative role in regulating Hippo and NDR pathway signaling in metazoans and the Mitotic Exit Network in yeast. Human MOB1 binds both the upstream kinases MST1 and MST2 and the downstream AGC group kinases LATS1, LATS2, NDR1 and NDR2. Binding of MOB1 to MST1 and MST2 is mediated by its phosphopeptide-binding infrastructure, the specificity of which matches the phosphorylation consensus of MST1 and MST2. On the other hand, binding of MOB1 to the LATS and NDR kinases is mediated by a distinct interaction surface on MOB1...
April 3, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28353006/efficacy-and-cost-effectiveness-of-second-line-chemotherapy-in-elderly-patients-with-advanced-gastric-cancer
#20
K Zhou, F Wen, P Zhang, J Zhou, H Chen, H Zheng, Y Yang, Q Li
PURPOSE: Second-line chemotherapy has been shown to benefit patients with advanced gastric cancer (AGC), extending the overall survival (OS) and progression-free survival (PFS). This study aimed to assess the efficacy and cost-effectiveness of second-line treatment for elderly patients with AGC. METHODS: Medical records and follow-up information of elderly patients (≥70 years) with AGC who received second-line chemotherapy were collected. A Markov model comprising three health states PFS, progressive disease and death was developed to simulate the process of AGC...
March 28, 2017: Clinical & Translational Oncology
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