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https://www.readbyqxmd.com/read/28724251/concurrent-exposures-to-nonylphenol-bisphenol-a-phthalates-and-organophosphate-pesticides-on-birth-outcomes-a-cohort-study-in-taipei-taiwan
#1
Yu-Fang Huang, Wen-Chi Pan, Yen-An Tsai, Chia-Huang Chang, Pei-Jung Chen, Yi-Shuan Shao, Ming-Song Tsai, Jia-Woei Hou, Chensheng Alex Lu, Mei-Lien Chen
Prenatal exposure to phenols, phthalates (PAEs), and organophosphate (OP) pesticides may increase the risk of abnormal birth outcomes. However, many previous studies have examined exposure to a limited number of chemical classes or exposure profiles limited to a specific stage of pregnancy. This study aims to characterize the concurrent exposure scenario throughout pregnancy by simultaneously monitoring internal doses of several endocrine-disrupting compounds (EDCs), including 2 phenols (nonylphenol (NP) and bisphenol A (BPA)), 9 PAEs, and 6 OP pesticide metabolites and to assess the relationships between concurrent exposure to EDCs and infant birth weight, length, and head and chest circumference...
July 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28723722/complementary-and-alternative-medicine-use-and-symptom-burden-in-women-undergoing-chemotherapy-for-breast-cancer-in-malaysia
#2
Ping Lei Chui, Khatijah Lim Abdullah, Li Ping Wong, Nur Aishah Taib
BACKGROUND: Complementary and alternative medicine (CAM) is commonly used for cancer- and chemotherapy-related symptoms. Nurses are likely to encounter many CAM users in their practice. OBJECTIVE: The aims of this study were to assess CAM use and examine the symptom burden of CAM and non-CAM users among patients with breast cancer who are undergoing chemotherapy. METHODS: A CAM use questionnaire and the Side-Effect Burden Scale were administered to 546 patients...
July 14, 2017: Cancer Nursing
https://www.readbyqxmd.com/read/28723674/nanoparticles-and-female-reproductive-system-how-do-nanoparticles-affect-oogenesis-and-embryonic-development
#3
REVIEW
Cong-Cong Hou, Jun-Quan Zhu
Along with the increasing application of nanoparticles (NPs) in many walks of life, environmental exposure to NPs has raised considerable health concerns. When NPs enter a pregnant woman's body through inhalation, venous injection, ingestion or skin permeation, maternal toxic stress reactions such as reactive oxygen species (ROS), inflammation, apoptosis and endocrine dyscrasia are induced in different organs, particularly in the reproductive organs. Recent studies have shown that NPs disturb the developing oocyte by invading the protective barrier of theca cells, granulosa cell layers and zona pellucida...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723148/sub-6-nm-palladium-nanoparticles-for-faster-more-sensitive-h2-detection-using-carbon-nanotube-ropes
#4
Xiaowei Li, Mya Le Thai, Rajen K Dutta, Shaopeng Qiao, Girija T Chandran, Reginald M Penner
Palladium (Pd) nanoparticle (NP)-decorated carbon nanotube (CNT) ropes (or CNT@PdNP) are used as the sensing element for hydrogen gas (H2) chemiresistors. In spite of the fact that Pd NPs have a mean diameter below 6 nm and are highly dispersed on the CNT surfaces, CNT@PdNP ropes produce a relative resistance change 20-30 times larger than is observed at single, pure Pd nanowires. Thus, CNT@PdNP rope sensors improve upon all H2 sensing metrics (speed, dynamic range, and limit-of-detection), relative to single Pd nanowires which heretofore have defined the state-of-the-art in H2 sensing performance...
February 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723120/graphene-oxide-nanoprisms-for-sensitive-detection-of-environmentally-important-aromatic-compounds-with-sers
#5
Peter V Shanta, Quan Cheng
Recent advances in graphene-based sensors have shown that heavily oxidized (GO) and reduced graphene oxide (rGO) are attractive materials for environmental sensing due to their unique chemical and physical properties. We describe here the fabrication of nanostructured GO assemblies with Ag nanoprisms for improved detection with surface enhanced Raman scattering (SERS). Specifically, 100-μm-sized, periodic-nanoprism-array domains were fabricated on top of the GO layers by GO-assisted lithography (GOAL). The atomically thin GO underlayers are shown to attract cyclic aromatic molecules to the surface, likely via π-π stacking interactions...
June 23, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28723108/oral-exposure-of-silver-nanoparticles-or-silver-ions-may-aggravate-fatty-liver-disease-in-overweight-mice
#6
Jianbo Jia, Feifei Li, Hongyu Zhou, Yuhong Bai, Sijin Liu, Yiguo Jiang, Guibin Jiang, Bing Yan
As the applications and environmental release of silver ions and nanoparticles are increasing, growing human exposures to these pollutants have become an emerging health concerns. The impeding effects of such pollutants on susceptible populations are severely under-studied. Here, we demonstrate that Ag NPs, at a dose that causes no general toxicity in normal mice, promote the progression of fatty liver disease from steatosis to steatohepatitis only in overweight mice. Exposure to Ag+ ions induces the same effects in overweight mice...
July 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28723097/decorating-of-ag-and-cuo-on-cu-nanoparticles-for-the-enhanced-high-catalytic-activity-to-the-degradation-of-organic-pollutants
#7
Yu Liang, Zhe Chen, Wen Yao, Pengyi Wang, Shujun Yu, Xiangke Wang
The metal/semiconductor composites are promising catalysts with superior catalytic activity. In this work, a Cu/CuO-Ag composite with structure that Ag and CuO nanoparticles (NPs) decorated on the surface of Cu were fabricated via a facile in-situ method. With the characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX) and inductively coupled plasma atomic emission spectrometry (ICP-AES), the structure and structure and component of Cu/CuO-Ag composite were well-defined...
July 19, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28722438/graphene-oxide-upconversion-nanoparticle-based-optical-sensors-for-targeted-detection-of-mrna-biomarkers-present-in-alzheimer-s-disease-and-prostate-cancer
#8
Patrick Vilela, Afaf El-Sagheer, Timothy M Millar, Tom Brown, Otto L Muskens, Antonios G Kanaras
The development of new sensors for the accurate detection of biomarkers in biological fluids is of utmost importance for the early diagnosis of diseases. Next to advanced laboratory techniques, there is a need for relatively simple methods which can significantly broaden the availability of diagnostic capability. Here, we demonstrate the successful application of a sensor platform based on graphene oxide and upconversion nanoparticles (NPs) for the specific detection of mRNA-related oligonucleotide markers in complex biological fluids...
January 27, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28721709/-paradoxal-decrease-and-metabolic-effects-of-bnp-in-obese-patient
#9
Rémy C Martin-Du-Pan, Alain Golay
Natriuretic peptides (NP), ANP and BNP, are produced by cardiomyocytes when there is stretching of the ventricular and auricular walls in heart failure (HF). Their vasodilatator and natriuretic effect oppose to volume and pressure overload occurring in HF. Several studies have observed decreased levels of NP in obese and diabetic people and in patients with insulin resistance. This decrease could contribute to hypertension, frequently observed in obesity. NP have also a lipolytic action. Low levels of NP could promote obesity...
March 22, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28721038/toxicity-based-toxicokinetic-toxicodynamic-assessment-of-bioaccumulation-and-nanotoxicity-of-zerovalent-iron-nanoparticles-in-caenorhabditis-elegans
#10
Ying-Fei Yang, Yi-Jun Lin, Chung-Min Liao
Elucidating the relationships between the toxicity-based-toxicokinetic (TBTK)/toxicodynamic (TD) properties of engineered nanomaterials and their nanotoxicity is crucial for human health-risk analysis. Zerovalent iron (Fe(0)) nanoparticles (NPs) are one of the most prominent NPs applied in remediating contaminated soils and groundwater. However, there are concerns that Fe(0)NP application contributes to long-term environmental and human health impacts. The nematode Caenorhabditis elegans is a surrogate in vivo model that has been successfully applied to assess the potential nanotoxicity of these nanomaterials...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28719745/highly-efficient-water-decontamination-by-using-sub-10-nm-feooh-confined-within-millimeter-sized-mesoporous-polystyrene-beads
#11
Xiaolin Zhang, Cheng Cheng, Jieshu Qian, Zhenda Lu, Siyuan Pan, Bing-Cai Pan
Millimeter-sized polymer-based FeOOH nanoparticles (NPs) provide a promising option to overcome the bottlenecks of direct use of NPs in scaled-up water purification, and decreasing the NP size below 10 nm is expected to improve the decontamination efficiency of the polymeric nanocomposites due to the size and surface effect. However, it is still challenging to control the dwelled FeOOH NP sizes to sub-10 nm, mainly due to the wide pore size distribution of the currently available polymeric hosts. Herein, we synthesized mesoporous polystyrene beads (MesoPS) via flash freezing to assemble FeOOH NPs...
July 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28719646/a-synergistic-negative-effect-of-gestational-smoke-exposure-and-small-litter-size-on-rat-placental-efficiency-vascularisation-and-angiogenic-factors-mrna-expression
#12
Zhen-Yan Chen, Ying Yao
Smoking increases the risk of pregnancy complications such as spontaneous abortion and low birth weight (LBW). By cigarette smoke exposure (gestational day, GD3-17), normal-litter-size pregnancy with low birth weight (NP-LBW) and small-litter-size pregnancy with normal birth weight (SP-NBW) in rats were induced. The placental weight in SP-NBW was twice the weight of the normal in contrast with the smaller placenta in NP-LBW. Compared with the normal, placental efficiency (expressed as fetus-to-placenta weight ratio) and placental vascularisation were significantly decreased in smoke exposed placentas with more obvious decrease in SP-NBW...
2017: PloS One
https://www.readbyqxmd.com/read/28719551/annulus-fibrosus-repair-using-high-density-collagen-gel-an-in-vivo-ovine-model
#13
Brenton Pennicooke, Ibrahim Hussain, Connor Berlin, Stephen R Sloan, Brandon Borde, Yu Moriguchi, Gernot Lang, Rodrigo Navarro-Ramirez, Jonathan Cheetham, Lawrence J Bonassar, Roger Härtl
STUDY DESIGN: Ovine in vivo study. OBJECTIVE: To perform lateral approach lumbar surgery in an ovine model to administer an injectable riboflavin (RF) cross-linked high-density collagen (HDC) gel and to assess its ability to mitigate intervertebral disc (IVD) degeneration after induced annulus fibrosus (AF) injury. SUMMARY OF BACKGROUND DATA: Biological-based injectable gels have shown efficacy in restoring biomechanical, radiographic, and histological parameters in IVD-injured animal models...
July 17, 2017: Spine
https://www.readbyqxmd.com/read/28719035/melatonin-inhibits-nucleus-pulposus-np-cell-proliferation-and-extracellular-matrix-ecm-remodeling-via-the-melatonin-membrane-receptors-mediated-pi3k-akt-pathway
#14
Zheng Li, Xingye Li, Chong Chen, Matthew T V Chan, William Ka Kei Wu, Jianxiong Shen
Pinealectomy in vertebrates accelerated intervertebral disc degeneration (IDD). However, the potential mechanisms, particularly, melatonin's role is still to be clarified. In this study, for first time, melatonin membrane receptors of MT1 and MT2 were found to be present in the human intervertebral disc tissues and nucleus pulposus (NP) cells, respectively. Melatonin treatment significantly inhibited NP cell proliferation in dose- dependent manner. Accordingly, melatonin down-regulated gene expression of cyclin D1, PCNA, matrix metallopeptidases-3 and -9 and upregulated gene expression of collagen type II alpha 1 chain and aggrecan in NP cells...
July 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28718650/self-regulated-nanoparticle-assembly-at-liquid-liquid-interfaces-a-route-to-adaptive-structuring-of-liquids
#15
Caili Huang, Mengmeng Cui, Zhiwei Sun, Feng Liu, Brett A Helms, Thomas P Russell
The controlled structuring of liquids into arbitrary shapes can be achieved in biphasic liquid media using the interfacial assemblies of nanoparticle surfactants (NP-surfactants), that consist of a polar nanoparticle "head group" bound to one or more hydrophobic polymer "tails". The non-equilibrium shapes of the suspended liquid phase can be rendered permanent by the jamming of the NP-surfactants formed and assembled at the interface between the liquids as the system attempts to minimize the interfacial area between the liquids...
July 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28716711/epigenetic-silencing-of-mirna-143-regulates-apoptosis-by-targeting-bcl2-in-human-intervertebral-disc-degeneration
#16
Kangcheng Zhao, Yukun Zhang, Kang Liang, Yu Song, Kun Wang, Shuai Li, Xinghuo Wu, Wenbin Hua, Zengwu Shao, Shuhua Yang, Cao Yang
Accumulating evidence indicates that microRNAs can regulate the apoptosis of various cells. Apoptosis of nucleus pulposus cells plays an important role in the progression of intervertebral disc degeneration. The aim of this study is to investigate whether microRNA-143 (miRNA-143) is involved in the progression of intervertebral disc degeneration. In this study, the expression of miRNA-143 and its biological modulatory effects were examined. Messenger RNA and protein expression of miRNA-143 and B-cell lymphoma-2 (BCL2) in both normal and degenerative disc tissues was determined by using RT-PCR and western-blot assays...
July 14, 2017: Gene
https://www.readbyqxmd.com/read/28716167/osteopontin-induced-vascular-endothelial-growth-factor-production-in-dispersed-nasal-polyp-cells-through-the-phosphatidylinositol-3-kinase-protein-kinase-b-and-the-extracellular-signal-regulated-kinase-1-2-pathways
#17
Jingdong Du, Huadong Mao, Hong Ouyang, Yan Xin
BACKGROUND: Osteopontin (OPN) is involved in cell survival, migration, and angiogenesis. The role of OPN in inducing angiogenesis in tumor has been confirmed. In this study, we investigated the expression of OPN in patients with chronic rhinosinusitis (CRS) with nasal polyp (NP) and the relationship of OPN with vascular endothelial growth factor (VEGF) production. METHODS: We enrolled 45 subjects with CRS (25 with CRS with NPs [CRSwNP] and 20 subjects with CRS without NPs [CRSsNP]), and with 14 normal controls to determine the expression of OPN and VEGF...
July 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28715865/chitosan-oligosaccharides-protect-nucleus-pulposus-cells-from-hydrogen-peroxide-induced-apoptosis-in-a-rat-experimental-model
#18
Peng Jia, Ling Yu, Chunjie Tao, Guo Dai, Zhengpei Zhang, Shiqing Liu
Chitosan has been investigated for its protective effect on nucleus pulposus (NP) cells against intervertebral disc degeneration(IDD), but its high molecular weight prohibits its clinical application. The low molecular derivatives, chitosan oligosaccharides (COS) are easier to absorb; however, the protective effect of COS against IDD remains unclear. In this study, we investigated the effects of COS on NP degeneration. NP cells derived from rats were treated with H2O2 to induce an IDD-like transition. Then, COS was used to pre-treat cells before administering H2O2 and changes occurring in the cells were observed...
July 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28715765/impact-of-coated-tio2-nanoparticles-used-in-sunscreens-on-two-representative-strains-of-the-human-microbiota-effect-of-the-particle-surface-nature-and-aging
#19
Laura Rowenczyk, Cécile Duclairoir-Poc, Magalie Barreau, Céline Picard, Nicolas Hucher, Nicole Orange, Michel Grisel, Marc Feuilloley
The impact of two differently coated TiO2-nanoparticles (NPs) was evaluated on two representative bacteria from the cutaneous microbiota (Staphylococcus aureus and Pseudomonas fluorescens) in conditions of use. Particles were coated in order to exhibit either hydrophilic or hydrophobic behavior. A first exposure scenario within some fresh/aged model emulsions was developed in order to measure both the impact of the NPs presence and their surface nature during the emulsions conservation. Thanks to this protocol, it was demonstrated that, during aging, the hydrophobic NPs modified the physicochemical characteristics of the emulsions, such as the pH or the colloids sizes, and favored the development of potential pathogenic bacteria...
July 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28715436/use-of-water-turnover-method-to-measure-mother-s-milk-flow-in-a-rat-model-application-to-dams-receiving-a-low-protein-diet-during-gestation-and-lactation
#20
Thomas Sevrin, Marie-Cécile Alexandre-Gouabau, Dominique Darmaun, Antoine Palvadeau, Agnès André, Patrick Nguyen, Khadija Ouguerram, Clair-Yves Boquien
Assessment of milk production is of utmost relevance for pediatricians and scientists interested in early life nutrition. The weight-suckle-weight (WSW) method, which consists of weighing babies before and after they suckle their mother, uses the difference in body weight as an estimate of milk intake. However, this is prone to many sources of error. In the current study, we used for the first time the water turnover method and compartmental analysis with deuterated water (D2O) as a non-toxic tracer to quantify in vivo milk production in a rat model...
2017: PloS One
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