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https://www.readbyqxmd.com/read/28319409/investigation-of-anticarcinogenic-and-antioxidant-effects-of-methylimidazole
#1
M Norizadeh Tazehkand, O Hajipour, F Moridikia, A Moridikia, E Valipour, M B Yilmaz, M Topaktas
4-methylimidazole is widely used in pharmaceuticals, photographic and agricultural chemicals. The substance is extensively found in many human and animals foods. In this research, anticancer effect of the 4-MEI was studded using MTT test using MCF-7 cell line. Effect of the 4-MEI on apoptosis or necrosis was analyzed by DNA fragmentation assay using Swiss Albino rats as a model organism. Antioxidant effect of the substance was investigated by assaying protective effect of the substance on circular plasmid DNA against H2O2 as an oxidative agent...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28318873/factors-associated-with-changes-in-fruit-intake-during-young-adulthood-a-classification-and-regression-tree-analysis-of-longitudinal-data
#2
David Lohrmann, Wasantha Jayawardene, Mohammad Torabi
OBJECTIVE: To examine whether distinct participant groupings for changes in fruit intake (FI) levels between ages 23 and 31 years are identifiable based on both time-varying and time-invariant sociodemographic and behavioral variables. METHODS: Data were derived from the National Longitudinal Survey of Youth-1997, US. Change in FI frequency constituted the dependent variable. For 21 variables, changes and averages in 2007-2011 were calculated. Classification and regression tree analysis was conducted using Generalized, Unbiased, Interaction Detection, and Estimation software...
March 16, 2017: Journal of Nutrition Education and Behavior
https://www.readbyqxmd.com/read/28318754/differences-between-men-and-women-in-substance-use-the-role-of-educational-level-and-employment-status
#3
Ester Teixidó-Compañó, Albert Espelt, Luis Sordo, María J Bravo, Ana Sarasa-Renedo, B Iciar Indave, Marina Bosque-Prous, M Teresa Brugal
OBJECTIVE: To determine differences between men and women in hazardous drinking, heavy cannabis use and hypnosedative use according to educational level and employment status in the economically active population in Spain. METHOD: Cross-sectional study with data from 2013 Spanish Household Survey on Alcohol and Drugs on individuals aged 25-64 [n=14,113 (women=6,171; men=7,942)]. Dependent variables were hazardous drinking, heavy cannabis use and hypnosedative consumption; the main independent variables were educational level and employment situation...
March 15, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/28318734/effects-of-acetone-cyanohydrin-a-derivative-of-cassava-on-motor-activity-and-kidney-and-liver-function-in-wistar-rats
#4
E Rivadeneyra-Domínguez, C J Rosas-Jarquín, A Vázquez-Luna, R Díaz-Sobac, J F Rodríguez-Landa
INTRODUCTION: Acetone cyanohydrin (ACH) is a toxic substance present in cassava roots (Manihot esculenta Crantz) which results from enzymatic hydrolysis of linamarin. Long-term consumption is associated with 2 neurological disorders: konzo and tropical ataxic neuropathy. Previous studies have evaluated behavioural alterations linked to ACH consumption, but the toxic effects of this substance on physiological processes remain unknown. METHOD: 32 male Wistar rats were assigned to 4 experimental groups (n=8 per group): a vehicle group (0...
March 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28317259/a-prospective-study-of-the-substance-use-and-mental-health-outcomes-of-young-adult-former-and-current-cannabis-users
#5
Edmund Silins, Wendy Swift, Tim Slade, Barbara Toson, Bryan Rodgers, Delyse M Hutchinson
INTRODUCTION AND AIMS: The extent to which young adult former cannabis users fare better than infrequent users is unclear. We investigated the association between cannabis use status at age 23 and substance use and mental health outcomes at age 27. DESIGN AND METHODS: Data were from the 20+ year cohort of the PATH Through Life Study. Lifetime cannabis users (n = 1410) at age 23 were classified as former/occasional/regular users. Multivariable logistic regression was used to estimate the association between cannabis use status at age 23 and six outcomes assessed at age 27...
March 20, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/28316168/-advances-in-the-research-of-effects-of-exosomes-derived-from-stem-cells-on-wound-repair
#6
M Y Li, D W Liu, Y G Mao
Exosomes are nano-vesicles released by many kinds of cells. Exosomes play a significant role in cell-to-cell communication and substance transportation through direct effect of signaling molecules on the cell membrane surface, intracellular regulation of cellular content during membrane fusion, or regulation of release of various bioactive molecules. Several studies have reported that culture supernatant of stem cells has some related exosomes to take part in wound repair. The secretion of exosomes is depended on the source and the physiological and pathological condition of deriving cells...
March 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28316094/predicting-herbicide-mixture-effects-on-multiple-algal-species-using-mixture-toxicity-models
#7
Takashi Nagai
The validity of the application of mixture toxicity models, concentration addition (CA) and independent action (IA), to species sensitivity distribution (SSD) for calculation of multi-substance potentially affected fraction (msPAF) was examined in laboratory experiments. Toxicity assays of herbicide mixtures using 5 species of periphytic algae were conducted. Two mixture experiments were designed: a mixture of 5 herbicides with similar mode of action (MoA) and a mixture of 5 herbicides with dissimilar MoA, corresponding to the assumptions of the CA and IA models, respectively...
March 18, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28315314/nicotine-promotes-cholangiocarcinoma-growth-in-xenograft-mice
#8
Allyson K Martínez, Kendal Jensen, Chad Hall, April O'Brien, Laurent Ehrlich, Tori White, Fanyin Meng, Tianhao Zhou, John Greene, Francesca Bernuzzi, Pietro Invernizzi, David E Dostal, Terry Lairmore, Gianfranco Alpini, Shannon Glaser
Nicotine, the main addictive substance in tobacco, is known to play a role in the development and/or progression of a number of malignant tumors. However, nicotine's involvement in the pathogenesis of cholangiocarcinoma is controversial. Therefore, we studied the effects of nicotine on the growth of cholangiocarcinoma cells in vitro and the progression of cholangiocarcinoma in a mouse xenograft model. The predominant subunit responsible for nicotine-mediated proliferation in normal and cancer cells, the α7 nicotinic acetylcholine receptor (α7-nAChR), was more highly expressed in human cholangiocarcinoma cell lines compared with normal human cholangiocytes...
March 14, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28314553/is-alexithymia-related-to-cannabis-use-disorder-results-from-a-case-control-study-in-outpatient-adolescent-cannabis-abusers
#9
Géraldine Dorard, Catherine Bungener, Olivier Phan, Yves Edel, Maurice Corcos, Sylvie Berthoz
OBJECTIVE: In recent decades, alexithymia has been considered a risk factor for multiple somatic and psychiatric conditions. Yet, whereas alexithymia has been extensively studied in adults with a substance misuse, only one study has reported data on cannabis abusers from the general population. Hence, our main objective was to explore alexithymia in a clinical sample of treatment-seeking young outpatients with a DSM-IV cannabis dependence or abuse diagnosis compared to controls. METHODS: 120 young patients (95 males - mean age 17...
April 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28314439/reversing-the-atypical-valuation-of-drug-and-nondrug-rewards-in-smokers-using-multimodal-neuroimaging
#10
Travis E Baker, Paul Lesperance, Alan Tucholka, Stephane Potvin, Kevin Larcher, Yu Zhang, Didier Jutras-Aswad, Patricia Conrod
BACKGROUND: Chronic substance use can disrupt the reward function of the anterior cingulate cortex (ACC), biasing the ACC to favor goal-directed behaviors that converge on drug use. Here we used multimodal neuroimaging methods to ask whether modulating reward-related signaling in the ACC can reverse the atypical valuation of nondrug and drug rewards in abstinent smokers. METHODS: We first recorded functional magnetic resonance imaging data from 20 moderately dependent cigarette smokers (mean age = 25 years; no history of neuropsychiatric disorders), following an overnight period of abstinence, to identify regions of the left dorsal lateral prefrontal cortex associated with the anticipation of drug-related rewards (cigarette puff)...
January 27, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28303360/modulation-of-linoleic-acid-binding-properties-of-human-serum-albumin-by-divalent-metal-cations
#11
Ekaterina L Nemashkalova, Eugene A Permyakov, Sergei E Permyakov, Ekaterina A Litus
Human serum albumin (HSA) is an abundant multiligand carrier protein, linked to progression of Alzheimer's disease (AD). Blood HSA serves as a depot of amyloid β (Aβ) peptide. Aβ peptide-buffering properties of HSA depend on interaction with its ligands. Some of the ligands, namely, linoleic acid (LA), zinc and copper ions are involved into AD progression. To clarify the interplay between LA and metal ion binding to HSA, the dependence of LA binding to HSA on Zn(2+), Cu(2+), Mg(2+) and Ca(2+) levels and structural consequences of these interactions have been explored...
March 16, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28302966/highly-sensitive-fluorescence-quantitative-detection-of-mercury-in-soil-based-on-non-labeled-molecular-beacon-and-fluorescent-dye-hoechst-33258
#12
Dongshan Xiang, Kun Zhai, Qiuzhang Sang, Boan Shi, Xiaohong Yang
A highly sensitive and selective fluorescence method of quantitative detection for mercury in soil was developed using non-labeled molecular beacon (MB), single-stranded nucleic acid (ssDNA) and fluorescent dye Hoechst 33258. In this analytical method, the loop of MB was designed to be a sequence that was complementary to the ssDNA with multiple T-T mismatches, the stem of MB was completely designed as C-G base pairs, and both ends of the MB are not modified by any fluorophore and quencher. In the absence of Hg(2+), the interaction between Hoechst 33258 and the MB was very weak, and the fluorescence signal of Hoechst 33258 was very low...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/28302960/development-of-chemical-and-chemo-enzymatic-glycosylations
#13
Shin-Ichiro Shoda
Glycosidic compounds are indispensable molecules in living systems. Biological phenomena such as cell wall formation, energy storage, and cell recognition strongly depend on the multi-functional characters of these substances. Development of highly regio- and stereoselective glycosylation reactions is necessary to provide sufficient amounts of specific compounds in basic research as well as for applications in industry. This review presents an overview of chemical and chemo-enzymatic glycosylations that have been developed during my forty-year academic career in the field of glyco-science...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/28302929/heartworm-extract-induces-relaxation-of-isolated-rat-thoracic-aorta
#14
Katsuya Kitoh, Hiroaki Nakamura, Hitoshi Kitagawa, Toshihiro Unno, Seiichi Komori, Shin-Pin Chiou, Yasuhiro Takashima
Isolated rat thoracic aortic strips undergoing noradrenaline-induced contraction were treated with an adult heartworm (HW) crude extract and then examined for isometric changes in tension. HW extract caused relaxation of endothelium-intact strips, but not endothelium-denuded strips. This effect was inhibited by treatment with N(G)-nitro-L-arginine methyl ester hydrochloride (L-NAME) and could be reversed by additional treatment with L-arginine. However, HW extract at a high concentration caused slight relaxation of endothelium-denuded strips, and relaxation persisted after L-NAME treatment in endothelium intact-strips...
March 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28299204/the-coadministration-of-unoxidized-and-oxidized-desi-ghee-ameliorates-the-toxic-effects-of-thermally-oxidized-ghee-in-rabbits
#15
Alam Zeb, Islam Uddin
Desi Ghee was thermally oxidized at 160°C for 9 h and characterized for peroxide value (PV), free fatty acid (FFA), thiobarbituric acid reactive substances (TBARS), radical scavenging activity (RSA), and fatty acid and cholesterol composition using GC-MS. Oxidized (OG) and normal ghee (NG) were fed to rabbits in different doses. Blood was collected for hematology and biochemical analyses after 7 and 14 days. The oxidation of desi ghee increased the PV, FFA, and TBARS values and showed a decline in the RSA values...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28297678/roles-for-cell-cell-adhesion-and-contact-in-obesity-induced-hepatic-myeloid-cell-accumulation-and-glucose-intolerance
#16
Yasutaka Miyachi, Kyoichiro Tsuchiya, Chikara Komiya, Kumiko Shiba, Noriko Shimazu, Shinobu Yamaguchi, Michiyo Deushi, Mizuko Osaka, Kouji Inoue, Yuta Sato, Sayaka Matsumoto, Junichi Kikuta, Kenjiro Wake, Masayuki Yoshida, Masaru Ishii, Yoshihiro Ogawa
Obesity promotes infiltration of inflammatory cells into various tissues, leading to parenchymal and stromal cell interaction and development of cellular and organ dysfunction. Liver sinusoidal endothelial cells (LSECs) are the first cells that contact portal blood cells and substances in the liver, but their functions in the development of obesity-associated glucose metabolism remain unclear. Here, we find that LSECs are involved in obesity-associated accumulation of myeloid cells via VLA-4-dependent cell-cell adhesion...
March 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28297025/association-of-stimulant-use-with-dopaminergic-alterations-in-users-of-cocaine-amphetamine-or-methamphetamine-a-systematic-review-and-meta-analysis
#17
Abhishekh H Ashok, Yuya Mizuno, Nora D Volkow, Oliver D Howes
Importance: Stimulant use disorder is common, affecting between 0.3% and 1.1% of the population, and costs more than $85 billion per year globally. There are no licensed treatments to date. Several lines of evidence implicate the dopamine system in the pathogenesis of substance use disorder. Therefore, understanding the nature of dopamine dysfunction seen in stimulant users has the potential to aid the development of new therapeutics. Objective: To comprehensively review the in vivo imaging evidence for dopaminergic alterations in stimulant (cocaine, amphetamine, or methamphetamine) abuse or dependence...
March 15, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28296627/predictors-of-early-relapse-among-adolescent-crack-users
#18
Ronaldo Lopes-Rosa, Félix P Kessler, Thiago G Pianca, Luciano Guimarães, Pedro Ferronato, Esequiel Pagnussat, Helena Moura, Flavio Pechansky, Lisia von Diemen
Relapse is associated with a poor prognosis among drug users. Crack cocaine users are more prone to severe dependence because of the intensity of use. Additionally, initiating drug use during adolescence worsens users' prognosis due to the increased rates of impulsivity and other risk behaviors. This study aimed to identify the predictors of early relapse among adolescent crack users discharged from inpatient treatment. A cohort study was conducted with 89 psychiatric inpatients aged 12-17 years from two different hospitals in southern Brazil who met the criteria for crack abuse or dependence...
February 15, 2017: Journal of Addictive Diseases
https://www.readbyqxmd.com/read/28295758/internet-interventions-for-adult-illicit-substance-users-a-meta-analysis
#19
REVIEW
Nikolaos Boumparis, Eirini Karyotaki, Michael P Schaub, Pim Cuijpers, Heleen Riper
BACKGROUND AND AIMS: Research has shown that internet interventions can be effective for dependent users of various substances. However, less is known about the effects of these interventions on users of opioids, cocaine, and amphetamines than for other substances. We aimed to investigate the effectiveness of internet interventions in decreasing the usage of these types of substances. METHODS: We conducted a systematic literature search in the databases of PubMed, PsycINFO, Embase, and the Cochrane Library to identify randomized controlled trials examining the effectiveness of internet interventions compared with control conditions in reducing the use of opioids, cocaine, and amphetamines...
March 10, 2017: Addiction
https://www.readbyqxmd.com/read/28294462/disruption-of-white-matter-structural-integrity-and-connectivity-in-posttraumatic-stress-disorder-a-tbss-and-tractography-study
#20
Elizabeth A Olson, Jiaolong Cui, Rena Fukunaga, Lisa D Nickerson, Scott L Rauch, Isabelle M Rosso
BACKGROUND: Most studies of brain white matter (WM) in posttraumatic stress disorder (PTSD) have focused on combat trauma, and often were confounded by neurological and substance dependence comorbidity. This study used tract-based spatial statistics (TBSS) and probabilistic tractography to characterize WM microstructure in a mixed-sex community sample of PTSD patients exposed to diverse and multiple traumas, and in trauma-exposed normal comparison (TENC) subjects. METHODS: TBSS compared diffusion measures between 20 adults with DSM-IV PTSD and 17 TENC, using a whole-brain voxel-wise approach...
March 15, 2017: Depression and Anxiety
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