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Mohammad Shakir, Summaiya Hanif, Md Fazle Alam, Hina Younus
Novel bio-relevant monometallic Schiff base complexes of the type, [Cu(L(1))2] (1), [Zn(L(1))2]·2H2O (2), [Cu(L(2))2]·2H2O (3) and [Zn(L(2))2]·H2O (4) [L(1)(E)-3-(((3-chloro-4-hydroxyphenyl)imino)methyl)naphthalen-2-ol and L(2)(E)-2-chloro-4-((1-(5-chloro-2-hydroxyphenyl)ethylidene)amino)phenol] were synthesized and characterized. A comparative account of analytical, spectroscopic (FT-IR, (1)H and (13)C NMR, Mass, UV-vis and EPR), thermal (TGA/DTA), XRD and SEM studies revealed a correlation between the structure and function of these biologically active molecular entities...
October 11, 2016: Journal of Photochemistry and Photobiology. B, Biology
Zaiddodine Pashandi, Maryam Molakarimi, Reza H Sajedi, Majid Taghdir, Hossein Naderi-Manesh
Mnemiopsin, an EF-hand Ca(2+) binding photoprotein isolated from luminous ctenophore Mnemiopsis leidyi, emits blue light from its chromophore, coelenterazine, which is non-covalently bond in its central hydrophobic core. Previous studies have revealed unique biochemical properties for ctenophore photoproteins such as inactivation by light, but only few have focused on photoinactivation process. To understand the nature of photoinactivation process we have investigated the impact of light alone and in the presence of Ca(2+) ion on the structure of this photoprotein...
October 18, 2016: Journal of Photochemistry and Photobiology. B, Biology
Jan P Kamiński, Emily Miraflor, Karen Zaghiyan, Phillip Fleshner
Treatment of Crohn's disease (CD) relies on medical therapy with surgery reserved for medically refractory cases. This study measured pharmaceutical therapies that CD patients receive before surgery. Prospective data were collected on 558 patients undergoing surgery for medically refractory CD from November 1999 through June 2014. Patient demographics and preoperative medical therapies were tabulated, including types and number of doses of aminosalicylic acid, corticosteroids, immunomodulators, and biologic therapies...
October 2016: American Surgeon
Karen Zaghiyan, Jan P Kamiński, Galinos Barmparas, Phillip Fleshner
The risk of de novo Crohn's disease (CD) after ileal pouch-anal anastomosis (IPAA) for ulcerative colitis (UC) versus inflammatory bowel disease unclassified (IBDU) or indeterminate colitis (IC) remains debatable. Here, we present updated results after long-term follow-up of a previously studied cohort of 334 patients with UC, IBDU, or IC who underwent IPAA during a 10-year period ending 2007. Of 334 study patients, 56 per cent were male and median age was 38 years (range: 8-81). Patients were classified as UC (n = 237) or IBDU (n = 97) preoperatively and UC (n = 236) or IC (n = 98) postoperatively...
October 2016: American Surgeon
Haishan Zhao, Hongtao Tang, Qinghuan Xiao, Miao He, Lin Zhao, Yingzi Fu, Huizhe Wu, Zhaojin Yu, Qian Jiang, Yuanyuan Yan, Feng Jin, Minjie Wei
Cancer stem cells (CSCs) have been suggested to serve an important role in tumor recurrence and metastasis in breast cancer. The hedgehog (Hh) signaling pathway is essential for the maintenance of breast CSCs. The present study used immunohistochemistry to investigate the expression of Patched (PTCH) and Gli1, which are the main components of the Hh signaling pathway, as well as the expression of cluster of differentiation (CD)44/CD24, which are markers for breast CSCs, in 266 patients with breast cancer. The combined expression of PTCH and Gli1 was significantly associated with larger tumors (>2...
October 19, 2016: Molecular Medicine Reports
Paulo R D V Godoy, Ana Paula L Montaldi, Elza T Sakamoto-Hojo
Glioblastoma multiforme (GBM) is a lethal tumor and novel strategies are required to overcome resistance. Transcription factor 12 (HEB) has been associated with neural and stem cell proliferation, is overexpressed in certain tumor types and is induced in irradiated U87MG cells. The present study aimed to determine whether HEB knockdown, with or without irradiation, may sensitize GBM cells. U87MG GBM and ACBRI‑371 primary human astrocytes were cultured in monolayers or neurospheres. Cell proliferation and death, cell cycle and sub‑G1 detection, and cluster of differentiation (CD) 133 immunofluorescence were analyzed by flow cytometry, whereas HEB protein expression was analyzed by immunocytochemistry and western blotting...
October 21, 2016: Molecular Medicine Reports
Yun Wu, Zhiqiang Guo, Wei Zhang, Qiaoguo Tan, Li Zhang, Xinlei Ge, Mindong Chen
Heavy metals activate the synthesis of phytochelatins (PCs), while the induced PCs might affect metal uptake via chelating intracellular free metals. However, the relationship of PCs to metal uptake is poorly understood. In this study, we examined the kinetics of cadmium (Cd) accumulation and the synthesis of PCs in a marine diatom, Thalassiosira weissflogii, under different irradiance levels. Irradiance alone could not change the concentrations of PCs in the Cd-free treatments, while higher irradiance accelerated the induction of intracellular PCs at the same [Cd(2+)] level...
October 25, 2016: Scientific Reports
Nagamalai Vasimalai, Maria T Fernandez-Arguelles
Highly fluorescent gold nanodots have been synthesized through a novel rapid, facile and one-pot room temperature route using trithiocyanuric acid as mild reducing agent and surface ligand. The proposed synthesis overcomes limitations of other synthetic routes in terms of cost, time, complexity and environmental risks, and gives rise to highly fluorescent gold nanodots within 10 min at room temperature, with a maximum emission wavelength at 623 nm and a large Stokes shift (213 nm). Moreover, the synthesized gold nanodots showed a large emission QY (9...
November 25, 2016: Nanotechnology
Zuo-Xi Li, Xue Zhang, Yi-Chen Liu, Kang-Yu Zou, Man-Li Yue
Herein, four new cadmium metal-organic frameworks (Cd-MOFs), [Cd(bib)(bdc)]∞ (1), [Cd(bbib)(bdc)(H2 O)]∞ (2), [Cd(bibp)(bdc)]∞ (3), and [Cd2 (bbibp)2 (bdc)2 (H2 O)]∞ (4), have been constructed from the reaction of Cd(NO3 )2 ⋅4 H2 O with 1,4-benzenedicarboxylate (H2 bdc) and structure-related bis(imidazole) ligands (1,4-bis(imidazol-1-yl)benzene (bib), 1,4-bis(benzoimidazol-1-yl)benzene (bbib), 4,4'-bis(imidazol-1-yl)biphenyl (bibp), and 4,4'-bis(benzoimidazol-1-yl)biphenyl (bbibp)) under solvothermal conditions...
October 25, 2016: Chemistry: a European Journal
Caroline M Taylor, Jean Golding, Alan M Emond
BACKGROUND/AIM: Studies on the effects of moderate prenatal exposure to cadmium (Cd) on birth outcomes have been contradictory and it has been suggested that effects may be partly masked by sex-specific effects. Our aim was to examine the association of Cd exposure in a large group of pregnant women with birth outcomes in the whole group of participants and by sex. METHODS: Pregnant women were enrolled in the Avon Longitudinal Study of Parents and Children (ALSPAC)...
October 25, 2016: Paediatric and Perinatal Epidemiology
Khaled Abass, Markku Koiranen, Darja Mazej, Janja Snoj Tratnik, Milena Horvat, Jukka Hakkola, Marjo-Riitta Järvelin, Arja Rautio
The Northern Finland Birth Cohort program (NFBC) is the epidemiological and longitudinal prospective general population research program, which was established to promote health and wellbeing of the population in northern Finland. The aim of present study, as a part of the NFBC program, was to analyze the blood levels of arsenic (B-As), cadmium (B-Cd), lead (B-Pb), total mercury (B-Hg) and selenium (B-Se); to compare these levels with threshold limits; to study sociodemographic factors; and to correlate these levels with calcium and haemoglobin...
October 24, 2016: Environmental Science and Pollution Research International
Kyle Joshua Fortinsky, David Kevans, Judy Qiang, Wei Xu, Felipe Bellolio, Hillary Steinhart, Raquel Milgrom, Gordon Greenberg, Zane Cohen, Helen Macrae, Joanne Stempak, Robin McLeod, Mark S Silverberg
BACKGROUND AND AIMS: The utility of postoperative medical prophylaxis (POMP) and the treatment of mild endoscopic recurrence remain controversial. METHODS: This study is a retrospective review of patients undergoing a primary ileocolic resection for CD at a single academic center. Endoscopic recurrence (ER) was defined using the Rutgeerts score (RS), and clinical recurrence (CR) was defined as symptoms of CD with endoscopic or radiologic evidence of neo-terminal ileal disease...
October 24, 2016: Digestive Diseases and Sciences
Xiangdong Bi, Ran Yan, Fenxiang Li, Wei Dai, Kewei Jiao, Qixing Zhou, Qi Liu
To investigate the sequestration and distribution characteristics of Cd(II) by Microcystis aeruginosa and its role in Microcystis colony formation, M. aeruginosa was exposed to six different Cd(II) concentrations for 10 days. Cd(II) exposure caused hormesis in the growth of M. aeruginosa. Low concentrations of Cd(II) significantly induced formation of small Microcystis colonies (P < 0.05) and increased the intracellular polysaccharide (IPS) and bound extracellular polysaccharide (bEPS) contents of M. aeruginosa significantly (P < 0...
2016: BioMed Research International
Wolfgang Brezna, Kirsten Lux, Nikolaus Dragostinoff, Christian Krutzler, Nicole Plank, Rainer Tobisch, Agnes Boltz, Gerhard Garhöfer, Reinhard Told, Katarzyna Witkowska, Leopold Schmetterer
PURPOSE: The visual performance of monofocal, bifocal, and trifocal intraocular lenses was evaluated by human individuals using a vision simulator device. This allowed investigation of the visual impression after cataract surgery, without the need actually to implant the lenses. METHODS: The randomized, double-masked, three-way cross-over study was conducted on 60 healthy male and female subjects aged between 18 and 35 years. Visual acuity (Early Treatment Diabetic Retinopathy Study; ETDRS) and contrast sensitivity tests (Pelli-Robson) under different lighting conditions (luminosities from 0...
October 2016: Translational Vision Science & Technology
Jong-Ku Lee, Hyeon-Gyeong Choi, Jae-Yeop Kim, Juhyun Nam, Hee-Tae Kang, Sang-Baek Koh, Sung-Soo Oh
BACKGROUND: This study was conducted to check whether self-resilience, one of the characteristics known to affect the occurrence of post-traumatic stress disorder (PTSD) symptoms after experiencing traumatic events, could serve as a protective factor for police officers whose occupational factors are corrected. METHODS: We conducted a cross-sectional study in which 112 male police officers in Gangwon Province participated. They visited the Wonju Severance Christian Hospital Occupational Environment Center for medical check-ups from June to December 2015...
2016: Annals of Occupational and Environmental Medicine
Xiaoming Zou, Xiaoyu Xiao, Yu He, Lijun Hu, Cui Hu, Xiangfeng Huang
Hormesis is an intriguing phenomenon that is characterized by low dose stimulation and high dose inhibition. Several traditional parameters, such as the concentration of the zero equivalent point (ZEP) and the maximal stimulatory effect (Ymax), have been used to characterize the zone of hormesis or the extent of the stimulatory effect. However, the characteristics of hormesis for chemicals cannot be quantified completely by one parameter, which is important to accurately compare the hormetic effects of chemicals and to describe the combined effects of chemical mixtures at low doses...
September 20, 2016: Journal of Hazardous Materials
Hui Wang, Zheng Liu, Wenxiu Zhang, Ziao Yuan, Hongyi Yuan, Xueting Liu, Chunwen Yang, Weijun Guan
BACKGROUND: Heavy metals can cause great harm to Siberian tigers in the natural environment. Cadmium (Cd(2+)) is an environmental contaminant that affects multiple cellular processes, including cell proliferation, differentiation, and survival. It has been shown to induce apoptosis in a variety of cell types and tissues. RESULTS: We investigated the apoptotic effects of Cd(2+) on Siberian tiger fibroblasts in vitro. Our research revealed the typical signs of apoptosis after Cd(2+) exposure...
October 24, 2016: Biological Research
C García-Delgado, M Alonso-Izquierdo, M González-Izquierdo, F Yunta, E Eymar
The present research was aimed to (i) report the recycling of spent A. bisporus substrate (SAS) to remove heavy metals (Cd and Pb) and phenanthrene (Phe) from polluted water and (ii) assess the possibility to use the treated water for irrigation. Batch experiments were carried out to assess, firstly, the effect of interaction time between pollutants with SAS and, secondly, the pH of the polluted water. Then a biofilter was designed by using pressurized glass columns. Chemical parameters such as pH, electrical conductivity and content of Pb, Cd, Phe, nutrients (NPK) and Cl(-) were determined...
October 24, 2016: Environmental Technology
Lixia Yuan, Min Liu, Guiqin Liu, Dacheng Li, Zhengping Wang, Bingquan Wang, Jun Han, Min Zhang
Combination therapy with more than one therapeutic agent can improve therapeutic efficiency and decrease drug resistance. In this study, the interactions of human serum albumin (HSA) with individual or combined anticancer drugs, (-)-epigallocatechin-3-gallate (EGCG) and 5-fluorouracil (FU), were investigated by fluorescence and circular dichroism (CD) spectroscopy. The results demonstrated that the interaction of EGCG or FU with HSA is a process of static quenching and EGCG formed a more stable complex. The competitive experiments of site markers suggested that both anti-carcinogens mainly bound to site I (subdomain IIA)...
October 18, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Tong Zhou, Zhu Li, Fan Zhang, Xiaosan Jiang, Weiming Shi, Longhua Wu, Peter Christie
Concentrations of arsenic (As), cadmium (Cd) and lead (Pb) were determined in 384 human hair samples and 445 purchased food samples from 11 cities in China. The mean concentrations of hair As, Cd and Pb were 0.23, 0.062 and 2.45mgkg(-1), respectively. The As, Cd and Pb concentrations in different foods were lower than the national maximum allowable contaminant levels. By comparison, males had higher hair As concentrations but lower Cd concentrations than females. When the interaction effects of gender and age were considered, males had the higher hair As, Cd and Pb concentrations in the 51-65 year-old age group...
October 19, 2016: Environmental Toxicology and Pharmacology
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