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https://www.readbyqxmd.com/read/27908498/hydrophilic-interaction-and-reversed-phase-mixed-mode-liquid-chromatography-coupled-to-high-resolution-tandem-mass-spectrometry-for-polar-lipids-analysis
#1
Sara Granafei, Pietro Azzone, Vito Alessandro Spinelli, Ilario Losito, Francesco Palmisano, Tommaso R I Cataldi
A hydrophilic interaction liquid chromatography (HILIC) fused-core column (150×2.1mm ID, 2.7μm particle size) and a short reversed-phase liquid chromatography (RPLC) column (20mm×2.1mm ID, 1.9μm) were serially coupled to perform mixed-mode chromatography (MMC) on complex mixtures of phospholipids (PL). Mobile phase composition and gradient elution program were, preliminarily, optimized using a mixture of phosphatidylcholines (PC), phosphatidylethanolamines (PE), their corresponding lyso-forms (LPC and LPE), and sphingomyelins (SM)...
November 25, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27864248/the-challenge-of-universal-eye-health-in-latin-america-distributive-inequality-of-ophthalmologists-in-14-countries
#2
Hannah Hong, Oscar J Mújica, José Anaya, Van C Lansingh, Ellery López, Juan Carlos Silva
BACKGROUND: No comprehensive study currently exists on the supply of ophthalmologists across Latin America. We explored sociogeographic inequalities in the availability and distribution of ophthalmologists across 14 Latin American countries. METHODS: The National Ophthalmologic Societies of Argentina, Bolivia, Brazil, Colombia, Costa Rica, Chile, the Dominican Republic, Ecuador, Guatemala, Mexico, Paraguay, Peru, Uruguay and Venezuela provided data on affiliated ophthalmologists by first-order subnational divisions in 2013...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27832631/a-double-negative-feedback-interaction-between-microrna-29b-and-dnmt3a-3b-contributes-to-ovarian-cancer-progression
#3
Yue Teng, Xiaohang Zuo, Meng Hou, Yan Zhang, Chen Li, Wenjuan Luo, Xu Li
BACKGROUND: Epigenetic abnormalities are increasingly observed in multiple malignancies, including epithelial ovarian cancer (EOC), and their effects can be significantly counteracted by tumor-suppressor microRNAs, namely epi-miRNAs. Here, we investigated the role of miR-29b, a well-established epi-miRNA, in the DNA methylation regulation of EOC cells. METHODS: The correlation between miR-29b and DNMT3A/3B expression was evaluated by RT-qPCR, western blotting and immunohistochemical analysis...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27752090/dnmt1-regulates-the-myogenic-lineage-specification-of-muscle-stem-cells
#4
Renjing Liu, Kun-Yong Kim, Yong-Wook Jung, In-Hyun Park
DNA methylation is an important epigenetic mark that regulates gene expression. Dnmt1 plays an important role in maintaining DNA methylation patterns on daughter DNA strands. Studies have shed light into the functional role of Dnmt1 regulation in the hematopoietic and epidermal systems. Here we show that Dnmt1 is required for myogenesis. Loss of Dnmt1 results in reduced expression of myogenic genes and defects in myogenic differentiation. We have utilized a conditional knockout mouse approach to examine the functional consequences of Dnmt1 depletion specifically in the developing muscle...
October 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27633352/knockdown-of-rpl9-expression-inhibits-colorectal-carcinoma-growth-via-the-inactivation-of-id-1-nf-%C3%AE%C2%BAb-signaling-axis
#5
In Hye Baik, Guk-Heui Jo, Daekwan Seo, Min Ji Ko, Chi Heum Cho, Min Goo Lee, Yun-Han Lee
Ribosomal protein L9 (RPL9), a component of the 60S subunit for protein synthesis, is upregulated in human colorectal cancer. In the present study, we investigated whether RPL9 gained extraribosomal function during tumorigenesis and whether targeting of RPL9 with small interfering (si) RNA could alter the course of colorectal cancer progression. Our results showed that siRNA knockdown of RPL9 suppresses colorectal cancer (CRC) cell growth and long-term colony formation through an increase in sub-G1 cell population and a strong induction of apoptotic cell death...
September 13, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27540101/exploring-academics-views-on-designs-methods-characteristics-and-outcomes-of-inclusive-health-research-with-people-with-intellectual-disabilities-a-modified-delphi-study
#6
T K Frankena, J Naaldenberg, M Cardol, J V Meijering, G Leusink, H M J van Schrojenstein Lantman-de Valk
BACKGROUND: The British Medical Journal's (BMJ's) patient revolution strives for collaboration with patients in healthcare and health research. This paper studies collaboration with people with intellectual disabilities (ID) in health research, also known as inclusive health research. Currently, transparency and agreement among academics is lacking regarding its main aspects, preventing upscaling of the patient revolution. OBJECTIVE: This study aims to gain agreement among academics on 3 aspects of inclusive health research for people with ID: (1) designs and methods, (2) most important characteristics and (3) outcomes...
2016: BMJ Open
https://www.readbyqxmd.com/read/27516242/iron-deficiency-anemia-and-mortality-in-renal-transplant-recipients
#7
Michele F Eisenga, Isidor Minovic, Stefan P Berger, Jenny E Kootstra-Ros, Else van den Berg, Ineke J Riphagen, Gerjan Navis, Peter van der Meer, Stephan J L Bakker, Carlo A J M Gaillard
Anemia, iron deficiency anemia (IDA) and iron deficiency (ID) are highly prevalent in renal transplant recipients (RTR). Anemia is associated with poor outcome, but the role of ID is unknown. Therefore, we aimed to investigate the association of ID, irrespective of anemia, with all-cause mortality in RTR. Cox regression analyses were used to investigate prospective associations. In 700 RTR, prevalences of anemia, IDA, and ID were 34%, 13%, and 30%, respectively. During follow-up for 3.1 (2.7-3.9) years, 81 (12%) RTR died...
August 12, 2016: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/27459117/fucoidan-induced-id-1-suppression-inhibits-the-in-vitro-and-in-vivo-invasion-of-hepatocellular-carcinoma-cells
#8
Yuri Cho, Eun Ju Cho, Jeong-Hoon Lee, Su Jong Yu, Yoon Jun Kim, Chung Yong Kim, Jung-Hwan Yoon
Hepatocellular carcinoma (HCC) is a fast growing tumor associated with a high tendency for vascular invasion and distant metastasis. Recently, we reported that fucoidan displays inhibitory effect on proliferation and invasion of HCC cells. In this study, we investigated the anti-metastatic effect of fucoidan on HCC cells and the key signal that modulates metastasis. The anti-metastatic effect of fucoidan was evaluated in vitro using an invasion assay with human HCC cells (Huh-7, SNU-761, and SNU-3085) under both normoxic (20% O2 and 5% CO2, at 37°C) and hypoxic (1% O2, 5% CO2, and 94% N2, at 37°C) conditions...
July 23, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27391392/characterization-of-the-pigment-fraction-in-sweet-bell-peppers-capsicum-annuum-l-harvested-at-green-and-overripe-yellow-and-red-stages-by-offline-multidimensional-convergence-chromatography-liquid-chromatography-mass-spectrometry
#9
Ivana Bonaccorsi, Francesco Cacciola, Margita Utczas, Veronica Inferrera, Daniele Giuffrida, Paola Donato, Paola Dugo, Luigi Mondello
Offline multidimensional supercritical fluid chromatography combined with reversed-phase liquid chromatography was employed for the carotenoid and chlorophyll characterization in different sweet bell peppers (Capsicum annuum L.) for the first time. The first dimension consisted of an Acquity HSS C18 SB (100 × 3 mm id, 1.8 μm particles) column operated with a supercritical mobile phase in an ultra-performance convergence chromatography system, whereas the second dimension was performed in reversed-phase mode with a C30 (250 × 4...
September 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27390286/pilot-mouse-study-of-1-mm-inner-diameter-id-vascular-graft-using-electrospun-poly-ester-urea-nanofibers
#10
Yaohua Gao, Tai Yi, Toshiharu Shinoka, Yong Ung Lee, Darrell H Reneker, Christopher K Breuer, Matthew L Becker
An off-the-shelf, small diameter tissue engineered vascular graft (TEVG) would be transformative to surgeons in multiple subspecialties. Herein, the results of a small diameter (ID ≈ 1 mm) vascular graft constructed from resorbable, amino acid-based poly(ester urea) (PEU) are reported. Electrospun PEU grafts of two different wall thicknesses (type A: 250 μm; type B: 350 μm) are implanted as abdominal infra-renal aortic grafts in a severe combined immune deficient/beige mouse model and evaluated for vessel remodeling over one year...
September 2016: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/27126345/factors-influencing-internal-medicine-resident-choice-of-infectious-diseases-or-other-specialties-a-national-cross-sectional-study
#11
Erin M Bonura, Eun Sul Lee, Katrina Ramsey, Wendy S Armstrong
BACKGROUND: Only 49% of infectious diseases (ID) fellowship programs were filled in 2015 through the national match, but little is known about internal medicine (IM) resident perceptions of ID and factors related to IM resident career choice. METHODS: We conducted 25 interviews and disseminated a Web-based survey to graduating IM residents in the United States utilizing a 2-stage sampling strategy. Participants were categorized into 3 groups based on interest in ID: (1) applied/intended to apply to ID; (2) interested in ID but did not apply; (3) never interested in ID...
July 15, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27060206/ligand-independent-aryl-hydrocarbon-receptor-inhibits-lung-cancer-cell-invasion-by-degradation-of-smad4
#12
Chen-Chen Lee, Wen-Hao Yang, Ching-Hao Li, Yu-Wen Cheng, Chi-Hao Tsai, Jaw-Jou Kang
The aryl hydrocarbon receptor (AhR) is a ligand-dependent-activated transcriptional factor that regulates the metabolism of xenobiotic and endogenous compounds. Although AhR plays a crucial role in air toxicant-induced carcinogenesis, AhR expression was shown to negatively regulate tumorigenesis. Therefore, in the present study, we investigated the effect of AhR without ligand treatment on cancer invasion in lung cancer cell lines. Lung cancer cells expressing lower levels of AhR showed higher invasion ability (H1299 cells) compared with cells expressing higher levels of AhR (A549 cells)...
July 1, 2016: Cancer Letters
https://www.readbyqxmd.com/read/26984046/tetramethylpyrazine-inhibits-tumor-growth-of-lung-cancer-through-disrupting-angiogenesis-via-bmp-smad-id-1-signaling
#13
Youchao Jia, Zhigang Wang, Aimin Zang, Shunchang Jiao, Sumei Chen, Yan Fu
The underlying mechanisms of inhibitory effects induced by tetramethylpyrazine (TMP) on angiogenesis and tumor growth of lung cancer were investigated. In vitro cell proliferation, migration, and tube formation of human microvascular endothelial cells (HMEC-1) were evaluated by a 3-(4,5-dimethylthiazol-2-yl)-2,5-dephenyltetrazolium bromide (MTT), wound healing, Transwell, and Matrigel assays. The expression of BMP/Smad/Id-1 signals was detected by RT-PCR and western blotting. In an A549 xenograft tumor model, TMP (40 and 80 mg/kg/day) was intraperitoneally injected into mice...
May 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/26926947/population-genetic-analysis-of-a-medicinally-significant-australian-rainforest-tree-fontainea-picrosperma-c-t-white-euphorbiaceae-biogeographic-patterns-and-implications-for-species-domestication-and-plantation-establishment
#14
R W Lamont, G C Conroy, P Reddell, S M Ogbourne
BACKGROUND: Fontainea picrosperma, a subcanopy tree endemic to the rainforests of northeastern Australia, is of medicinal significance following the discovery of the novel anti-cancer natural product, EBC-46. Laboratory synthesis of EBC-46 is unlikely to be commercially feasible and consequently production of the molecule is via isolation from F. picrosperma grown in plantations. Successful domestication and plantation production requires an intimate knowledge of a taxon's life-history attributes and genetic architecture, not only to ensure the maximum capture of genetic diversity from wild source populations, but also to minimise the risk of a detrimental loss in genetic diversity via founder effects during subsequent breeding programs designed to enhance commercially significant agronomic traits...
2016: BMC Plant Biology
https://www.readbyqxmd.com/read/26873092/foxo3-circular-rna-promotes-cardiac-senescence-by-modulating-multiple-factors-associated-with-stress-and-senescence-responses
#15
William W Du, Weining Yang, Yu Chen, Zhong-Kai Wu, Francis Stuart Foster, Zhenguo Yang, Xiangmin Li, Burton B Yang
AIMS: Circular RNAs are a subclass of non-coding RNAs detected within mammalian cells. This study was designed to test the roles of a circular RNA circ-Foxo3 in senescence using in vitro and in vivo approaches. METHODS AND RESULTS: Using the approaches of molecular and cellular biology, we show that a circular RNA generated from a member of the forkhead family of transcription factors, Foxo3, namely circ-Foxo3, was highly expressed in heart samples of aged patients and mice, which was correlated with markers of cellular senescence...
February 11, 2016: European Heart Journal
https://www.readbyqxmd.com/read/26869608/id-1-id-2-and-id-3-co-expression-correlates-with-prognosis-in-stage-i-and-ii-lung-adenocarcinoma-patients-treated-with-surgery-and-adjuvant-chemotherapy
#16
Leila Antonângelo, Taila Tuma, Alexandre Fabro, Milena Acencio, Ricardo Terra, Edwin Parra, Francisco Vargas, Teresa Takagaki, Vera Capelozzi
Inhibitors of DNA binding/inhibitors of differentiation (Id) protein family have been shown to be involved in carcinogenesis. However, the roles of Id during lung adenocarcinoma (ADC) progression remain unclear. Eighty-eight ADC samples were evaluated for Id-1,2,3 level and angiogenesis (CD 34 and VEGF microvessel density) by immunohistochemistry and morphometry. The impact of these markers was tested on follow-up until death or recurrence. A significant difference between tumor and normal tissue was found for Id-1,2,3 expression (P < 0...
June 2016: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/26831713/alignment-free-methods-for-the-detection-and-specificity-prediction-of-adenylation-domains
#17
Guillermin Agüero-Chapin, Gisselle Pérez-Machado, Aminael Sánchez-Rodríguez, Miguel Machado Santos, Agostinho Antunes
Identifying adenylation domains (A-domains) and their substrate specificity can aid the detection of nonribosomal peptide synthetases (NRPS) at genome/proteome level and allow inferring the structure of oligopeptides with relevant biological activities. However, that is challenging task due to the high sequence diversity of A-domains (~10-40 % of amino acid identity) and their selectivity for 50 different natural/unnatural amino acids. Altogether these characteristics make their detection and the prediction of their substrate specificity a real challenge when using traditional sequence alignment methods, e...
2016: Methods in Molecular Biology
https://www.readbyqxmd.com/read/26797271/id-1-promotes-osteosarcoma-cell-growth-and-inhibits-cell-apoptosis-via-pi3k-akt-signaling-pathway
#18
Liang Hao, Qi Liao, Qiang Tang, Huan Deng, Lu Chen
Accumulating evidence reveals that Id-1 is upregulated and functions as a potential tumor promoter in several human cancer types. However, the role of Id-1 in osteosarcoma (OS) is unknown. In present study, we found that Id-1 expression was elevated in OS tissues than adjacent normal bone tissues. More importantly, we demonstrated that overexpression of Id-1 is significantly correlated with tumor progression and poor survival in OS patients. Furthermore, increased expression of Id-1 was observed in OS cell lines and ectopic expression of Id-1 significantly enhanced in vitro cell proliferation and promoted in vivo tumor growth, whereas knockdown of Id-1 suppressed OS cells growth...
February 12, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/26775362/identification-of-cervical-cancer-markers-using-cdna-subtraction-approach
#19
Y Liu, S H Man, X Liu, X Y Ding, W L Xiao
PURPOSE OF INVESTIGATION: Cervical cancer markers are not well known for accurate detection of the disease. MATERIALS AND METHODS: In the present study, cervical cancer samples were collected from the 42 patients in the Department of Surgery and Medicine of Weifang People's Hospital and Medical College, Shandong, China. The cDNA subtraction approach was performed to find out the specific transcripts, which are responsible for cervical cancer. The specific differentially expressed transcripts were identified by Basic Local Alignment Search Tool (BLAST) analysis and the results were validated by immunohistochemistry...
2015: European Journal of Gynaecological Oncology
https://www.readbyqxmd.com/read/26705326/scleroderma-dermal-microvascular-endothelial-cells-exhibit-defective-response-to-pro-angiogenic-chemokines
#20
Pei-Suen Tsou, Bradley J Rabquer, Ray A Ohara, William A Stinson, Phillip L Campbell, M Asif Amin, Beatrix Balogh, George Zakhem, Paul A Renauer, Ann Lozier, Eshwar Arasu, G Kenneth Haines, Bashar Kahaleh, Elena Schiopu, Dinesh Khanna, Alisa E Koch
OBJECTIVES: Angiogenesis plays a critical role in SSc (scleroderma). The aim of this study was to examine the expression of growth-regulated protein-γ (Gro-γ/CXCL3), granulocyte chemotactic protein 2 (GCP-2/CXCL6) and their receptor CXCR2 in endothelial cells (ECs) isolated from SSc skin and determine whether these cells mount an angiogenic response towards pro-angiogenic chemokines. The downstream signalling pathways as well as the pro-angiogenic transcription factor inhibitor of DNA-binding protein 1 (Id-1) were also examined...
April 2016: Rheumatology
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