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https://www.readbyqxmd.com/read/29348413/synthesis-of-luminescent-carbon-dots-with-ultrahigh-quantum-yield-and-inherent-folate-receptor-positive-cancer-cell-targetability
#1
Haifang Liu, Zhaohui Li, Yuanqiang Sun, Xin Geng, Yalei Hu, Hongmin Meng, Jia Ge, Lingbo Qu
Carbon dots (CDs) have a wide range of applications in chemical, physical and biomedical research fields. We are particularly interested in the use of CDs as fluorescence nanomaterials for targeted tumor cell imaging. One of the important aspects of success is to enhance the fluorescence quantum yields (QY) of CDs as well as increase their targetability to tumor cells. However, most of the reported CDs are limited by relative low QY. In the current study, for the first time, one-step synthesis of highly luminescent CDs by using folic acid (FA) as single precursor was obtained in natural water through hydrothermal method...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29345211/developing-single-entity-theranostic-drug-based-fluorescent-nanoclusters-with-augmented-cytotoxicity
#2
Bandhan Chatterjee, Asif Raza, Siddhartha Sankar Ghosh
AIM: To develop methotrexate (MTX) templated luminescent gold nanoclusters (NCs) as a single unit nanotheranostic for cancer therapy and to assess its potential as an alternative to the parent drug, for drug delivery vehicles (DDVs). METHODS: Theranostics were synthesized and extensively characterized. The stability of the theranostic and its bioimaging aptitude were evaluated. The antiproliferative propensity of the theranostic was gauged with cell viability assays and was supplemented with cytometry-based assays...
January 18, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29341861/genome-wide-survey-reveals-dynamic-effects-of-folate-supplement-on-dna-methylation-and-gene-expression-during-c2c12-differentiation
#3
Yi Li, Qiang Feng, Miao Guo, Yuding Wang, Yunliang Jiang, Jinyi Xing
Folic acid supplements during pregnancy can prevent neural tube defects and other developmental abnormalities. Here, we explored the effects of folate supplement on gene expression and DNA methylation during C2C12 differentiation. Based on the folic acid concentration, this study comprised three groups: low folate (L), normal folate (N), and high-folate supplement (H). Our analyses revealed that differentiation and the mRNA expression of myogenin in C2C12 cell were enhanced by folic acid, however, the overall methylation percentage in myogenin promoter between different treatment groups was not significantly different (P>0...
January 12, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29340279/effect-of-mthfr-a1298c-and-mtrr-a66g-genetic-mutations-on-homocysteine-levels-in-the-chinese-population-a-systematic-review-and-meta-analysis
#4
Jiancheng Wang, Nengtai Ouyang, Long Qu, Tengfei Lin, Xianglin Zhang, Yaren Yu, Chongfei Jiang, Liling Xie, Liping Wang, Zhigui Wang, Shuzhen Ren, Shizhi Chen, Jiang Huang, Fang Liu, Weiqing Huang, Xianhui Qin
Background and Objectives: The Chinese population typically has inadequate folate intake and no mandatory folic acid fortification. Methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) are the two key regulatory enzymes in the folate/homocysteine (Hcy) metabolism. Hcy has been implicated in the pathogenesis of cardiovascular disease. We conducted a meta-analysis to assess whether the MTHFR gene A1298C and the MTRR gene A66G polymorphisms affect Hcy levels in the Chinese population...
December 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/29340056/temozolomide-encapsulated-and-folic-acid-decorated-chitosan-nanoparticles-for-lung-tumor-targeting-improving-therapeutic-efficacy-both-in-vitro-and-in-vivo
#5
Kaidi Li, Naixin Liang, Huaxia Yang, Hongsheng Liu, Shanqing Li
Folic acid-conjugated temozolomide (TMZ)-loaded chitosan nanoparticles (CS-TMZ-FLA-NP) were developed to target lung cancer in the anticipation that folic acid would increase the affinity of nanoparticles for cancer cells. CS-TMZ-FLA-NP showed the highest anti-proliferative effect on the lung cancer cells in comparison to free TMZ and CS-TMZ-NP (nanoparticles without folic acid). A cellular uptake assay was performed on two different cell lines, L132 and A549. Cellular uptake efficiencies of CS-TMZ-NP and CS-TMZ-FLA-NP were found to be concentration-dependent in both cell lines...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29340017/altered-gnas-imprinting-due-to-folic-acid-deficiency-contributes-to-poor-embryo-development-and-may-lead-to-neural-tube-defects
#6
Li Wang, Shaoyan Chang, Zhen Wang, Shan Wang, Junsheng Huo, Gangqiang Ding, Rui Li, Chi Liu, Shaofang Shangguan, Xiaolin Lu, Ting Zhang, Zhiyong Qiu, Jianxin Wu
Disturbed epigenetic modifications have been linked to the pathogenesis of Neural Tube Defects (NTDs) in those with folate deficiency during pregnancy. However, evidence is lacking to delineate the critical region in epigenome regulated by parental folic acid and mechanisms by which folate deficiency affects normal embryogenesis. Our data from clinical samples revealed the presence of aberrant DNA methylation in GNAS imprinting cluster in NTD samples with low folate concentrations. Results from mouse models indicated that the establishment of GNAS imprinting was influenced by both maternal and paternal folate-deficient diets...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339136/development-of-orally-applicable-combinatorial-drug-loaded-nanoparticles-for-the-treatment-of-fibrosarcoma
#7
Gulen Melike Demirbolat, Levent Altintas, Sukran Yilmaz, Ismail Tuncer Degim
Nanoparticulate systems have been receiving a significant attention especially for the treatment of cancer but one of the main hurdles is to produce these developed and high tech nanosystems in large quantities. Anticancer drug formulations are generally designed for parenteral administrations but oral administration is still the most convenient route. In this study, orally applicable nano-sized chitosan nanoparticles (NPs) were successfully prepared using Nano Spray Dryer. It is possible to produce these NPs in large quantities by simply increasing the processing time using the machine without changing any parameter...
January 12, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29337383/the-national-pregnancy-in-diabetes-npid-audit-challenges-and-opportunities-for-improving-pregnancy-outcomes
#8
H R Murphy, R Bell, A Dornhorst, R Forde, N Lewis-Barned
Our aim was to review the data from the National Pregnancy in Diabetes (NPID) audit, and to identify the challenges and opportunities for improving pregnancy outcomes in women with diabetes. We reviewed three years of NPID data and relevant diabetes and obstetric literature, and found that there has been little change in pregnancy preparation or outcomes over the past 3 years, with substantial clinic-to clinic variations in care. Women with Type 2 diabetes remain less likely to take 5 mg preconception folic acid (22...
January 16, 2018: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29336146/coordination-triggered-hierarchical-folate-zinc-supramolecular-hydrogels-leading-to-printable-biomaterials
#9
Kaerdun Liu, Shihao Zang, Rongrong Xue, Jinghui Yang, Lizhi Wang, Jianbin Huang, Yun Yan
Printable hydrogels desired in bioengineering have extremely high demands on biocompatibility and mechanic strength, which can hardly be achieved in conventional hydrogels made with biopolymers. Here we show that on employment of the strategy of coordination triggered hierarchical self-assembly of naturally occurred small molecule folic acid, supramolecular hydrogels with robust mechanical elastic modulus comparable to synthetic double network (DN) polymer gels can be made at concentrations below 1 %. A sequence of hierarchical steps are involved in the formation of this extraordinary hydrogel: petrin rings on folate form tetramers through hydrogen bonding, tetramers stack into nanofibers by π-π stacking, zinc ions cross-link the nanofibers into larger scale fibrils, and further crosslink the fibril network to gel water...
January 16, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29334703/-the-influencing-factors-of-anemia-for-pregnant-women-between-2010-2012-in-china
#10
S Jiang, X H Pang, Y F Duan, Y Bi, J Wang, S A Yin, L C Yang, Z Y Yang
Objective: To investigate the prevalence of anemia and related risk factors for pregnant women in China. Method: Based on Chinese National Nutrition and Health Surveillance 2010-2012, a total of 3 501 pregnant women were investigated from 150 counties of 31 provinces, municipalities and autonomous regions in China, using a multi-stage stratified cluster randomization sampling method. General information of pregnant women, health status, and food intake during the gestation, was collected through a questionnaire investigation...
January 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29334247/development-of-fisetin-loaded-folate-functionalized-pluronic-micelles-for-breast-cancer-targeting
#11
Atmaram Pawar, Srishti Singh, S Rajalakshmi, Karimunnisa Shaikh, C Bothiraja
The natural flavonoid fisetin (FS) has shown anticancer properties but its in-vivo administration remains challenging due to its poor aqueous solubility. The aim of the study was to develop FS loaded pluronic127 (PF)-folic acid (FA) conjugated micelles (FS-PF-FA) by the way of increasing solubility, bioavailability and active targetability of FS shall increase its therapeutic efficacy. FA-conjugated PF was prepared by carbodiimide crosslinker chemistry. FS-PF-FA micelles were prepared by thin-film hydration method and evaluated in comparison with free FS and FS loaded PF micelles (FS-PF)...
January 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29329201/population-reference-values-for-serum-methylmalonic-acid-concentrations-and-its-relationship-with-age-sex-race-ethnicity-supplement-use-kidney-function-and-serum-vitamin-b12-in-the-post-folic-acid-fortification-period
#12
Vijay Ganji, Mohammad R Kafai
Serum methylmalonic acid (MMA) is elevated in vitamin B-12 deficiency and in kidney dysfunction. Population reference values for serum MMA concentrations in post-folic acid fortification period are lacking. Aims of this study were to report the population reference values for serum MMA and to evaluate the relation between serum MMA and sex, age, race-ethnicity, kidney dysfunction and vitamin B-12. We used data from three National Health and Nutrition Examination Surveys, 1999-2000, 2001-2002 and 2003-2004 conducted after folic acid fortification commenced (n = 18,569)...
January 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29323604/preconception-health-indicators-for-public-health-surveillance
#13
Cheryl L Robbins, Denise D'Angelo, Lauren Zapata, Sheree L Boulet, Andrea J Sharma, Alys Adamski, Jennifer Farfalla, Caroline Stampfel, Sarah Verbiest, Charlan Kroelinger
OBJECTIVES: In response to an expressed need for more focused measurement of preconception health (PCH), we identify a condensed set of PCH indicators for state and national surveillance. METHODS: We used a systematic process to evaluate, prioritize, and select 10 PCH indicators that maternal and child health programs can use for surveillance. For each indicator, we assessed prevalence, whether it was addressed by professional recommendations, Healthy People 2020 objectives, or Centers for Disease Control and Prevention winnable battles, measurement simplicity, data completeness, and stakeholders' input...
January 11, 2018: Journal of Women's Health
https://www.readbyqxmd.com/read/29322637/maternal-exposures-and-risk-of-oral-clefts-in-south-vietnam
#14
Vu H A Dien, Christy M McKinney, Araya Pisek, Waranuch Pitiphat
BACKGROUND: Oral clefts are among the most common congenital anomalies. Most studies on risk factors of oral clefts have been carried out in developed countries. We investigated the associations between maternal exposures in the first trimester and oral clefts in South Vietnam. METHODS: We conducted a hospital-based case-control study during October 2014-November 2015. Cases included 170 patients with nonsyndromic cleft lip with or without cleft palate and those with cleft palate only...
January 11, 2018: Birth Defects Research
https://www.readbyqxmd.com/read/29320411/inihibition-of-glycolysis-by-using-a-micro-nano-lipid-bromopyruvic-chitosan-carrier-as-a-promising-tool-to-improve-treatment-of-hepatocellular-carcinoma
#15
Nemany A Hanafy, Luciana Dini, Cinzia Citti, Giuseppe Cannazza, Stefano Leporatti
Glucose consumption in many types of cancer cells, in particular hepatocellular carcinoma (HCC), was followed completely by over-expression of type II hexokinase (HKII). This evidence has been used in modern pharmacotherapy to discover therapeutic target against glycolysis in cancer cells. Bromopyruvate (BrPA) exhibits antagonist property against HKII and can be used to inhibit glycolysis. However, the clinical application of BrPA is mostly combined with inhibition effect for healthy cells particularly erythrocytes...
January 10, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29319147/factors-associated-with-low-birthweight-in-term-pregnancies-a-matched-case-control-study-from-rural-pakistan
#16
Muhammad A Habib, Camille R Greenow, Shabina Ariff, Sajid Soofi, Abid Hussain, Qamar Junejo, Amjad Hussain, Fariha Shaheen, Kirsten I Black
Low birthweight (LBW) remains a significant public health problem in Pakistan and further understanding of factors associated with LBW is required. We conducted a hospital-based matched case control study to identify risk factors associated with LBW in a rural district of Pakistan. We found that illiteracy (AOR: 2.68; 95% CI: 1.59 - 4.38), nulliparity (AOR: 1.82; 95% CI: 1.26-2.44), having a previous miscarriage/abortion (AOR: 1.22; 95% CI: 1.06-2.35), having < 2 antenatal care (ANC) visits during last pregnancy (AOR: 2...
January 2, 2018: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/29317843/calcium-channel-blockade-and-survival-in-recipients-of-successful-renal-transplant-an-analysis-of-the-favorit-trial-results
#17
Larry A Weinrauch, Jiankang Liu, Brian Claggett, Peter V Finn, Matthew R Weir, John A D'Elia
Introduction: Single-center and observational studies have suggested that calcium channel blocking agents may decrease the expression of sepsis in individual populations. In the renal transplant population, a role for calcium channel blockers in allograft protection and in prevention of sepsis has been postulated. We hypothesized that any important survival benefit or risk related to chronic use of calcium channel blocking agents should be discernable through an analysis of a large database of stable recipients of renal allografts who had enrolled in a large international trial...
2018: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/29315897/fluorescent-polyvinylphosphonate-bioconjugates-for-selective-cellular-delivery
#18
Christina Schwarzenböck, Andreas Schaffer, Elfriede Nößner, Peter J Nelson, Ralf Huss, Bernhard Rieger
To date, many poly(ethylene glycol) (PEG) and poly(N-isopropylacrylamide) (PNIPAAm) bioconjugates have been described, but they often show long response times, are not bio-inert, or lose function in biological fluids. Herein, we present a modular synthetic approach to generate polyvinylphosphonate bioconjugates. These conjugates exhibit a sharp phase transition temperature even under physiological conditions where few other examples with this property have been described to date. Furthermore, it was feasible to add biological functions to the polymers via the conjugation step...
January 8, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29313750/serum-retinol-folic-acid-and-copper-are-associated-with-sperm-abnormalities-in-men-with-obesity
#19
Berniza Calderón, Vital Hevia, Belén Vega-Piñero, Antonia Martín-Hidalgo, Helena Mendez-Del Sol, Héctor F Escobar-Morreale, José I Botella-Carretero
BACKGROUND AND OBJECTIVES: Micronutrients may influence the development and differentiation of sperm cells. The aim of this study was to assess the possible association of deficiencies in several vitamins and trace elements with sperm abnormalities in men with obesity. PARTICIPANTS AND METHODS: Thirty male patients with moderate to severe obesity and ten lean controls who gave written informed consent were included. Anthropometric parameters were recorded. Hormonal and lipid profiles were analyzed, as well as serum concentrations of zinc, copper, retinol, α-tocopherol, 25-hydroxyvitamin D, cobalamin, and folic acid...
January 9, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29313036/microfluidic-co-culture-devices-to-assess-penetration-of-nanoparticles-into-cancer-cell-mass
#20
Maria Jarvis, Michael Arnold, Jenna Ott, Kapil Pant, Balabhaskar Prabhakarpandian, Samir Mitragotri
In vitro and in vivo assessment of safety and efficacy are the essential first steps in developing nanoparticle-based therapeutic systems. However, it is often challenging to use the knowledge gained from in vitro studies to predict the outcome of in vivo studies since the complexity of the in vivo environment, including the existence of flow and a multicellular environment, is often lacking in traditional in vitro models. Here, we describe a microfluidic co-culture model comprising 4T1 breast cancer cells and EA...
September 2017: Bioengineering & Translational Medicine
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