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https://www.readbyqxmd.com/read/28345701/the-effect-of-natural-iron-oxide-and-oxalic-acid-on-the-photocatalytic-degradation-of-isoproturon-a-kinetics-and-analytical-study
#1
H Boucheloukh, W Remache, F Parrino, T Sehili, H Mechakra
The photocatalytic degradation of isoproturon, a persistent toxic herbicide, was investigated in the presence of natural iron oxide and oxalic acid and under UV irradiation. The influence of the relevant parameters such as the pH and the iron oxide and oxalic acid concentrations has been studied. The presence of natural iron oxide and oxalic acid in the system effectively allow the degradation of isoproturon, whereas the presence of t-butyl alcohol adversely affects the phototransformation of the target pollutant, thus indicating that an OH radical initiated the degradation mechanism...
March 27, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28343039/study-of-trace-metal-imbalances-in-the-blood-scalp-hair-and-nails-of-oral-cancer-patients-from-pakistan
#2
Muhammad Abdul Qayyum, Munir H Shah
Oral cancer is an important cause of cancer morbidity and mortality globally and exposure to trace metals alongside tobacco, alcohol and HPV are the important etiological factors in its development. Selected essential and toxic trace metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) were measured in the blood, scalp hair and nails of oral cancer patients and counterpart controls by atomic absorption spectrometry. Mean concentrations of Cd, Ni and Pb were found to be significantly higher (p<0.05) and those of Cu, Fe and Zn were considerably lower in the blood, scalp hair and nails of the patients than the controls...
March 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342135/pacap-protects-against-ethanol-and-nicotine-toxicity-in-sh-sy5y-cells-implications-for-drinking-smoking-co-morbidity
#3
Sridharan Manavalan, Bruk Getachew, Kebreten F Manaye, Syed J Khundmiri, Antonei B Csoka, Raechel McKinley, Andrea Tamas, Dora Reglodi, Yousef Tizabi
The detrimental effects of heavy drinking and smoking are multiplied when the two are combined. Treatment modalities for each and especially for the combination are very limited. Although in low concentration, alcohol and nicotine, each may have beneficial effects including neuroprotection, their combination, instead of providing additive protection, may actually lead to toxicity in cell cultures. Pituitary adenylate cyclase-activating polypeptide (PACAP) is an endogenous 38 amino-acid peptide with demonstrated protection against neuronal injury, trauma as well as various endogenous and exogenous toxic agents...
March 24, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28342004/modulatory-effects-of-terminalia-arjuna-against-domoic-acid-induced-toxicity-in-caco-2-cell-line
#4
E M Ramya, G Phani Kumar, T Anand, K R Anilakumar
Domoic acid is a potent marine algal toxin produced by diatomic genus of Pseudo-nitzschia causing amnesic shell fish poisoning. Domoic acid toxicosis mainly involves excitotoxic effects coupled with oxidative stress. The present study was aimed to evaluate the protective effects of hydro-alcoholic extract of Terminalia arjuna (TA) against domoic acid induced toxic effects in Caco-2 cell line. It was observed that the toxicity induced by domoic acid in Caco-2 cells was mediated by oxidative insult leading to morphological changes, DNA damage and apoptosis...
March 24, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28331542/expression-of-a-heat-stable-nadph-dependent-alcohol-dehydrogenase-from-thermoanaerobacter-pseudethanolicus-39e-in-clostridium-thermocellum-1313-results-in-increased-hydroxymethylfurfural-resistance
#5
Sun-Ki Kim, Joseph Groom, Daehwan Chung, James Elkins, Janet Westpheling
BACKGROUND: Resistance to deconstruction is a major limitation to the use of lignocellulosic biomass as a substrate for the production of fuels and chemicals. Consolidated bioprocessing (CBP), the use of microbes for the simultaneous hydrolysis of lignocellulose into soluble sugars and fermentation of the resulting sugars to products of interest, is a potential solution to this obstacle. The pretreatment of plant biomass, however, releases compounds that are inhibitory to the growth of microbes used for CBP...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28330301/evaluation-of-p-cresol-degradation-with-polyphenol-oxidase-ppo-immobilized-in-various-matrices
#6
Vijayalakshmi A Edalli, Sikandar I Mulla, Syed Ali Musstjab Akber Shah Eqani, Gurumurthy D Mahadevan, Rohit Sharma, Yogesh Shouche, Chandrappa M Kamanavalli
p-Cresol is an environmental pollutant due to its vast use, toxicity and persistence, nevertheless, its degradation in an enzyme is unclear. In this study, we used Pleurotus sp. isolate VLECK02 polyphenol oxidase (PPO) for the determination of p-cresol degradation. On the basis of UV, FT-IR and chromatographic (HPLC and GC-MS) analysis, 4-methylcatechol was identified as the main metabolite of p-cresol catabolism. In addition, batch and semi-continuous degradation of p-cresol (10 and 20 mM) were studied and compared by free and immobilized PPO in different matrices like sodium alginate (SA), sodium alginate-polyvinyl alcohol (SA-PVA) and sodium alginate-polyvinyl alcohol-silver nanoparticles (SA-PVA-AgNPs)...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28322544/graphene-oxide-quantum-dots-as-novel-nanozymes-for-alcohol-intoxication
#7
Anqi Sun, Li Mu, Xiangang Hu
Alcohol overconsumption as a worldwide issue results in alcoholic liver disease (ALD), such as steatosis, alcoholic hepatitis, and cirrhosis. The treatment of ALD has been widely investigated but remains challenging. In this work, the protective effects of graphene oxide quantum dots (GOQDs) as novel nanozymes against alcohol overconsumption are discovered, and the specific mechanisms underlying these effects are elucidated via omics analysis. GOQDs dramatically alleviate the reduction of cell viability induced by ethanol and can act as nanozymes to accelerate ethanol metabolism and avoid the accumulation of toxic intermediates in cells...
March 28, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28299558/body-pushing-prescription-drugs-and-hospital-admission
#8
Roger W Byard, Michaela Kenneally
A 39-year-old man died of multi-organ failure complicating mixed drug toxicity that included methadone, oxazepam, oxycodone and nitrazepam. His past medical history involved alcohol and poly-substance abuse with chronic self-harm and suicidal ideation. There had been multiple hospital admissions for drug overdoses. At autopsy the most unusual finding was of two packages of 10 tablets each, wrapped in thin plastic film within the rectum. The insertion of drugs into body orifices and cavities has been termed body pushing to distinguish it from body packing where illicit drugs are wrapped and swallowed for transport and smuggling, and body stuffing where small amounts of loosely wrapped or unwrapped drugs are swallowed to conceal evidence from police...
March 15, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28294288/engineering-saccharomyces-cerevisiae-fatty-acid-composition-for-increased-tolerance-to-octanoic-acid
#9
Pamela B Besada-Lombana, Ruben Fernandez-Moya, Jacob Fenster, Nancy A Da Silva
Biorenewable chemicals such as short and medium chain fatty acids enable functional or direct substitution of petroleum-derived building blocks, allowing reduction of anthropogenic greenhouse gases while meeting market needs of high-demand products like aliphatic alcohols and alpha olefins. However, producing these fatty acids in microorganisms can be challenging due to toxicity issues. Octanoic acid (C8) can disrupt the integrity of the cell membrane in yeast, and exogenous supplementation of oleic acid has been shown to help alleviate this...
March 14, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28292795/primary-care-management-of-opioid-use-disorders-abstinence-methadone-or-buprenorphine-naloxone
#10
REVIEW
Anita Srivastava, Meldon Kahan, Maya Nader
OBJECTIVE: To advise physicians on which treatment options to recommend for specific patient populations: abstinence-based treatment, buprenorphine-naloxone maintenance, or methadone maintenance. SOURCES OF INFORMATION: PubMed was searched and literature was reviewed on the effectiveness, safety, and side effect profiles of abstinence-based treatment, buprenorphine-naloxone treatment, and methadone treatment. Both observational and interventional studies were included...
March 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28292609/organic-micropollutants-omps-oxidation-by-ozone-effect-of-activated-carbon-on-toxicity-abatement
#11
Oscar Rozas, Carolina Baeza, Katherine Núñez, Alfred Rossner, Roberto Urrutia, Héctor D Mansilla
Oxidation and removal of organic micropollutants (OMPs) on ultrapure (UPW) and natural water (NW) by ozone (O3) and ozone/powdered activated carbon (O3/PAC) have been studied. The OMPs atrazine (ATZ, herbicide), carbamazepine (CBZ, anticonvulsant), diclofenac (DCL, anti-inflammatory) and triclosan (TCS, antimicrobial) are incorporated continuously and uncontrolled on water treatment systems (e.g., drinking water treatment plants, wastewater treatment plants). Batch experiments on ultrapure and natural water showed that ATZ treated with O3 and O3/PAC has the slowest transformation rate (>90% at 30min reaction) while CBZ, DCL and TCS were oxidized very fast (>90% at ~5min)...
March 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28283780/metabolic-carbonyl-reduction-of-anthracyclines-role-in-cardiotoxicity-and-cancer-resistance-reducing-enzymes-as-putative-targets-for-novel-cardioprotective-and-chemosensitizing-agents
#12
REVIEW
Kamil Piska, Paulina Koczurkiewicz, Adam Bucki, Katarzyna Wójcik-Pszczoła, Marcin Kołaczkowski, Elżbieta Pękala
Anthracycline antibiotics (ANT), such as doxorubicin or daunorubicin, are a class of anticancer drugs that are widely used in oncology. Although highly effective in cancer therapy, their usefulness is greatly limited by their cardiotoxicity. Possible mechanisms of ANT cardiotoxicity include their conversion to secondary alcohol metabolites (i.e. doxorubicinol, daunorubicinol) catalyzed by carbonyl reductases (CBR) and aldo-keto reductases (AKR). These metabolites are suspected to be more cardiotoxic than their parent compounds...
March 10, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28282928/oxidative-stress-a-new-target-for-pancreatic-cancer-prognosis-and-treatment
#13
REVIEW
Javier Martinez-Useros, Weiyao Li, Marticela Cabeza-Morales, Jesus Garcia-Foncillas
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal types of tumors, and its incidence is rising worldwide. Survival can be improved when tumors are detected at an early stage; however, this cancer is usually asymptomatic, and the disease only becomes apparent after metastasis. Several risk factors are associated to this disease. Chronic pancreatitis, diabetes, and some infectious disease are the most relevant risk factors. Incidence of PDAC has increased in the last decades. It is hypothesized it could be due to other acquired risk habits, like smoking, high alcohol intake, and obesity...
March 9, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28276466/conditional-survival-analysis-of-patients-with-locally-advanced-laryngeal-cancer-construction-of-a-dynamic-risk-model-and-clinical-nomogram
#14
(no author information available yet)
Conditional survival (CS), the survival beyond a pre-defined time interval, can identify periods of higher mortality risk for patients with locally advanced laryngeal cancer who face treatment-related toxicity and comorbidities related to alcohol and smoking in the survivorship setting. Using Weibull regression modeling, we analyzed retrospectively abstracted data from 638 records of patients who received radiation to identify prognostic factors for overall survival (OS) and recurrence free survival (RFS) for the first 3 years of survival and for OS conditional upon 3 years of survival...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28274107/pathophysiology-and-management-of-alcoholic-liver-disease-update-2016
#15
REVIEW
Felix Stickel, Christian Datz, Jochen Hampe, Ramon Bataller
Alcoholic liver disease (ALD) is a leading cause of cirrhosis, liver cancer, and acute and chronic liver failure and as such causes significant morbidity and mortality. While alcohol consumption is slightly decreasing in several European countries, it is rising in others and remains high in many countries around the world. The pathophysiology of ALD is still incompletely understood but relates largely to the direct toxic effects of alcohol and its main intermediate, acetaldehyde. Recently, novel putative mechanisms have been identified in systematic scans covering the entire human genome and raise new hypotheses on previously unknown pathways...
March 15, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28273963/benefits-of-alcohol-on-arsenic-toxicity-in-rats
#16
Purnima Singh, Shubha Ranjan Dutta, Deepak Passi, Jaya Bharti
INTRODUCTION: It has been demonstrated earlier that exposure to ethanol and/or arsenic compounds (such as sodium arsenite) produces toxic effects as shown by both in vitro and in vivo experiments. Chronic exposure of humans to arsenic through drinking water, pesticides or consumption of alcoholic beverages has produced major health problem and concern in recent years. Water being one of the main ingredients for alcohol formation (beer fermentation process) can lead to contamination with arsenic...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28264690/presentations-to-an-urban-emergency-department-in-bern-switzerland-associated-with-acute-recreational-drug-toxicity
#17
Evangelia Liakoni, Sabine Müller, Adrian Stoller, Meret Ricklin, Matthias E Liechti, Aristomenis K Exadaktylos
BACKGROUND: Although the recreational use of psychoactive substances is common there is only limited systematic collection of data on acute drug toxicity or hospital presentations. Currently, data from Switzerland are only available from the University Hospital of Basel. The present study aimed to describe the presentations due to recreational drug use at an emergency department in Bern, Switzerland during a 4 year period. METHODS: Retrospective analysis of cases presenting from May 2012 to April 2016 at the emergency department of the University Hospital of Bern, Switzerland, with symptoms/signs consistent with acute toxicity of recreational drug use...
March 7, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28259679/a-ph-responsive-glycolipid-like-nanocarrier-for-optimising-the-time-dependent-distribution-of-free-chemical-drugs-in-focal-cells
#18
Bolin Cheng, Binbin Lu, Xuan Liu, Tingting Meng, Yanan Tan, Yun Zhu, Na Liu, Hong Yuan, Xuan Huang, Fuqiang Hu
Though Drug delivery systems have achieved accumulation at tumor sites via passive targeting and active targeting, the therapeutic effects are far from perfect. The unsatisfactory results are mainly due to limited drug release from the nanocarriers at tumor sites, while the pharmacological activities of the drug are attributed to the concentration of the free drug and the time maintained at the pharmacological targets. A pH-responsive chitosan based glycolipid-like nanocarrier (CSO-FBA-SA) was fabricated by conjugating stearyl alcohol (SA) to chitosan oligosaccharide (CSO) with the linkage of 4-formylbenzoic acid (FBA)...
March 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28259304/detection-of-acute-changes-in-left-ventricular-function-by-myocardial-deformation-analysis-after-excessive-alcohol-ingestion
#19
Jörg Schröder, Sandra Hamada, Ertunc Altiok, Mohammad Almalla, Chrysoula Koutziampasi, Andreas Napp, András Keszei, Marc Hein, Michael Becker
BACKGROUND: The effects of acute excessive alcohol ingestion on echocardiographic parameters of left ventricular (LV) function are unclear. METHODS: One hundred ninety-nine healthy subjects (44 ± 5 years, 71% male) were prospectively examined within 6 hours after excessive alcohol ingestion as well as after 4 weeks with strict alcohol abstinence. Echocardiography was performed at baseline and follow-up for conventional parameters (left ventricular ejection fraction [LVEF], transmitral E and A Doppler flow velocities, E/A ratio, tissue Doppler velocity lateral and septal (é), E/é ratio, deceleration time of E, and isovolumic relaxation time) and myocardial deformation data (such as global radial and global and layer-specific circumferential [endo and epi global CS] and longitudinal [endo and epi global LS] strain)...
March 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28258428/ecotoxicological-characterization-of-polyoxyethylene-glycerol-ester-non-ionic-surfactants-and-their-mixtures-with-anionic-and-non-ionic-surfactants
#20
Francisco Ríos, Alejandro Fernández-Arteaga, Manuela Lechuga, Mercedes Fernández-Serrano
This paper reports on a study that investigated the aquatic toxicity of new non-ionic surfactants derived from renewable raw materials, polyoxyethylene glycerol ester (PGE), and their binary mixtures with anionic and non-ionic surfactants. Toxicity of pure PGEs was determined using representative organisms from different trophic levels: luminescent bacteria (Vibrio fischeri), microalgae (Pseudokirchneriella subcapitata), and freshwater crustaceans (Daphnia magna). Relationships between toxicity and the structural parameters such as unit of ethylene oxide (EO) and hydrophilic-lipophilic balance (HLB) were evaluated...
March 3, 2017: Environmental Science and Pollution Research International
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