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https://www.readbyqxmd.com/read/29352267/differential-susceptibility-of-striatal-hippocampal-and-cortical-neurons-to-caspase-6
#1
Anastasia Noël, Libin Zhou, Bénédicte Foveau, P Jesper Sjöström, Andréa C LeBlanc
Active cysteinyl protease Caspase-6 is associated with early Alzheimer and Huntington diseases. Higher entorhinal cortex and hippocampal Caspase-6 levels correlate with lower cognitive performance in aged humans. Caspase-6 induces axonal degeneration in human primary neuron cultures and causes inflammation and neurodegeneration in mouse hippocampus, and age-dependent memory impairment. To assess whether Caspase-6 causes damage to another neuronal system, a transgenic knock-in mouse overexpressing a self-activated form of Caspase-6 five-fold in the striatum, the area affected in Huntington disease, and 2...
January 19, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29352079/identification-and-validation-of-a-new-source-of-low-grain-cadmium-accumulation-in-durum-wheat
#2
Atena Oladzad Abbasabadi, Ajay Kumar, Seyed Pirseyedi, Evan Salsman, Marina Dobrydina, Roshan Sharma Poudel, Wesam A AbuHammad, Shiaoman Chao, Justin D Faris, Elias M Elias
Cadmium (Cd) is a heavy metal that has no known biological function and is toxic for many living organisms. The maximum level of Cd concentration allowed in the international market for wheat grain is 0.2 mg kg-1. Because phenotyping for Cd uptake is expensive and time consuming, molecular markers associated with genes conferring low Cd uptake would expedite selection and lead to the development of durum cultivars with reduced Cd concentrations. Here, we identified single nucleotide polymorphisms (SNPs) associated with a novel low Cd uptake locus in the durum experimental line D041735, which has hexaploid common wheat in its pedigree...
January 19, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29351987/cd83-is-a-new-potential-biomarker-and-therapeutic-target-for-hodgkin-lymphoma
#3
Ziduo Li, Xinsheng Ju, Kenneth Lee, Candice Clarke, Jennifer L Hsu, Edward Abadir, Christian E Bryant, Suzanne Pears, Neroli Sunderland, Scott Heffernan, Annemarie Hennessy, Tsun-Ho Lo, Geoffrey A Pietersz, Fiona Kupresanin, Phillip D Fromm, Pablo A Silveira, Con Tsonis, Wendy A Cooper, Ilona Cunningham, Christina Brown, Georgina J Clark, Derek N J Hart
Chemotherapy and hematopoietic stem cell transplantation are effective treatments for most Hodgkin lymphoma patients, however there remains a need for better tumor-specific target therapy in Hodgkin lymphoma patients with refractory or relapsed disease. We demonstrate that membrane CD83 is a diagnostic and therapeutic target, highly expressed in Hodgkin lymphoma cell lines and Hodgkin and Reed-Sternberg cells in 29/35 (82.9%) Hodgkin lymphoma patient lymph node biopsies. CD83 from Hodgkin lymphoma tumor cells was able to trogocytose to surrounding T cells and interestingly, the trogocytosing CD83+T cells expressed significantly more PD-1 compared to CD83- T cells...
January 19, 2018: Haematologica
https://www.readbyqxmd.com/read/29351816/effects-of-gut-derived-endotoxin-on-anxiety-like-and-repetitive-behaviors-in-male-and-female-mice
#4
Christopher T Fields, Benoit Chassaing, Alexandra Castillo-Ruiz, Remus Osan, Andrew T Gewirtz, Geert J de Vries
BACKGROUND: Gut dysbiosis is observed in several neuropsychiatric disorders exhibiting increases in anxiety behavior, and recent work suggests links between gut inflammation and such disorders. One source of this inflammation may be lipopolysaccharide (LPS), a toxic component of gram-negative bacteria. Here, we (1) determine whether oral gavage of LPS, as a model of gut-derived endotoxemia, affects anxiety-like and/or repetitive behaviors; (2) test whether these changes depend on TLR4 signaling; and (3) test the extent to which gut-derived endotoxin and TLR4 antagonism affects males and females differently...
January 19, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29351480/mechanistically-different-effects-of-fat-and-sugar-on-insulin-resistance-hypertension-and-gut-microbiota-in-rats
#5
Sara Ramos-Romero, Mercè Hereu, Lidia Atienza, Josefina Casas, Olga Jáuregui, Susana Amézqueta, Gabriel Dasilva, Isabel Medina, Maria Rosa Nogués, Marta Romeu, Josep Lluís Torres
Insulin resistance (IR) and impaired glucose tolerance (IGT) are the first manifestations of diet-induced metabolic alterations leading to type-2 diabetes, while hypertension is the deadliest risk factor of cardiovascular disease. The roles of dietary fat and fructose in the development of IR, IGT and hypertension are controversial. We tested the long-term effects of an excess of fat or sucrose (fructose/glucose) on healthy male Wistar Kyoto (WKY) rats. Fat affects IR and IGT earlier than fructose through low-grade systemic inflammation evidenced by liver inflammatory infiltration, increased levels of plasma interleukin-6, prostaglandin E2 and reduced levels of protective short-chain fatty acids without triggering hypertension...
January 2, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29351260/fatty-acid-based-microemulsions-to-combat-ophthalmia-neonatorum-caused-by-neisseria-gonorrhoeae-and-staphylococcus-aureus
#6
Ummara Butt, Amr ElShaer, Lori A S Snyder, Ali A Al-Kinani, Adam Le Gresley, Raid G Alany
The bacterial species Neisseria gonorrhoeae (N. gonorrhoeae) and Staphylococcus aureus (S. aureus) are amongst the main microorganisms that cause ophthalmia neonatorum. The current treatment involves the use of various antibiotics such as ciprofloxacin, cephalosporin, ceftriaxone and cefotaxime. However, this treatment strategy is becoming more ineffective due to the antibiotic resistance in N. gonorrhoeae. The current study explores the potential use of fatty acid based microemulsions (ME) to prevent N. gonorrhoeae and S...
January 19, 2018: Nanomaterials
https://www.readbyqxmd.com/read/29351198/superoxide-dismutase-mimetic-gc4419-enhances-the-oxidation-of-pharmacological-ascorbate-and-its-anticancer-effects-in-an-h%C3%A2-o%C3%A2-dependent-manner
#7
Collin D Heer, Andrew B Davis, David B Riffe, Brett A Wagner, Kelly C Falls, Bryan G Allen, Garry R Buettner, Robert A Beardsley, Dennis P Riley, Douglas R Spitz
Lung cancer, together with head and neck cancer, accounts for more than one-fourth of cancer deaths worldwide. New, non-toxic therapeutic approaches are needed. High-dose IV vitamin C (aka, pharmacological ascorbate; P-AscH-) represents a promising adjuvant to radiochemotherapy that exerts its anti-cancer effects via metal-catalyzed oxidation to form H₂O₂. Mn(III)-porphyrins possessing superoxide dismutase (SOD) mimetic activity have been shown to increase the rate of oxidation of AscH-, enhancing the anti-tumor effects of AscH- in several cancer types...
January 19, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29351194/involvement-of-bax-and-bcl-2-in-induction-of-apoptosis-by-essential-oils-of-three-lebanese-salvia-species-in-human-prostate-cancer-cells
#8
Alessandra Russo, Venera Cardile, Adriana C E Graziano, Rosanna Avola, Maurizio Bruno, Daniela Rigano
Prostate cancer is one of the most common forms of cancer in men, and research to find more effective and less toxic drugs has become necessary. In the frame of our ongoing program on traditionally used Salvia species from the Mediterranean Area, here we report the biological activities of Salvia aurea, S. judaica and S. viscosa essential oils against human prostate cancer cells (DU-145). The cell viability was measured by 3(4,5-dimethyl-thiazol-2-yl)2,5-diphenyl-tetrazolium bromide (MTT) test and lactate dehydrogenase (LDH) release was used to quantify necrosis cell death...
January 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29350491/reproductive-toxic-impact-of-subchronic-treatment-with-combined-butylparaben-and-triclosan-in-weanling-male-rats
#9
Madeha A Riad, Marwa M Abd-Rabo, Samy A Abd El Aziz, Adel M El Behairy, Mohamed M Badawy
The effect of treatment with combined butylparaben and triclosan on male gonadal toxicity in weanling rats was investigated. All treated groups experienced atrophy in the ventral prostate and seminal vesicle, likewise significant depletion in the number and motility of sperm. Given individually or combined butylparaben and triclosan, significantly decreased testosterone, luteinizing hormone, and follicle-stimulating hormone levels. Individual treatment with tested compounds caused significant elevation in the E2 level, whereas combined treatment did not alter the E2 level...
January 19, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29350430/on-the-impact-of-sample-size-on-lc50-estimation-in-acute-fish-toxicity-testing-is-n%C3%A2-%C3%A2-7-group-enough
#10
Greg J Carr, A John Bailer, Jane M Rawlings, Scott E Belanger
The fish acute toxicity test method is foundational to aquatic toxicity testing strategies, yet the literature lacks a concise sample size assessment. While various sources address sample size, historical precedent seems to play a larger role than objective measures. Here, a novel and comprehensive quantification of the effect of sample size on estimation of the LC50 is presented, covering a wide range of scenarios. The results put into perspective the practical differences across a range of sample sizes, from N = 5/concentration up to N = 23/concentration...
January 19, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29350428/meta-analysis-of-fish-early-life-stage-tests-association-of-toxic-ratios-and-acute-to-chronic-ratios-with-modes-of-action
#11
REVIEW
Stefan Scholz, Rene Schreiber, James Armitage, Philipp Mayer, Beate I Escher, Annegret Lidzba, Marc Léonard, Rolf Altenburger
Fish early life stage (FELS) tests (OECD test guideline 210) are widely conducted to estimate chronic fish toxicity. In these tests, fish are exposed from the embryonic to the juvenile life stage. In order to analyse whether certain modes of action are related to high toxic ratios (TR, i.e., ratios between experimental effect and baseline toxicity) and/or acute-to-chronic ratios (ACR) in the FELS test effect concentrations for 183 compounds were extracted from the US EPA ecotoxicity database. Analysis of effect concentration of narcotic compounds indicated that baseline toxicity could be observed in the FELS test at similar concentrations as in acute fish toxicity test...
January 19, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29350320/ethical-implications-in-vaccine-pharmacotherapy-for-treatment-and-prevention-of-drug-of-abuse-dependence
#12
Anna Carfora, Paola Cassandro, Alessandro Feola, Francesco La Sala, Raffaella Petrella, Renata Borriello
Different immunotherapeutic approaches are in the pipeline for the treatment of drug dependence. "Drug vaccines" aim to induce the immune system to produce antibodies that bind to drugs and prevent them from inducing rewarding effects in the brain. Drugs of abuse currently being tested using these new approaches are opioids, nicotine, cocaine, and methamphetamine. In human clinical trials, "cocaine and nicotine vaccines" have been shown to induce sufficient antibody levels while producing few side effects. Studies in humans, determining how these vaccines interact in combination with their target drug, are underway...
January 19, 2018: Journal of Bioethical Inquiry
https://www.readbyqxmd.com/read/29349890/case-report-cytochrome-p450-implications-for-comorbid-adhd-and-ocd-pharmacotherapy
#13
Michaela K Hogan, Nikhil P Rao
TOPIC: This case report details the treatment of an early adolescent already receiving treatment for attention-deficit hyperactivity disorder who presents with recurrent obsessive-compulsive disorder. Potential atomoxetine (Strattera) and fluoxetine (Prozac) interactions via Cytochrome P450 (CYP450) pathways are examined and alternate therapies are recommended. PURPOSE: Provide a discussion of psychopharmacogenomics, especially in the case of combining medications, CYP450 enzymes, and clinical implications in the context of the burgeoning field of precision medicine...
January 19, 2018: Journal of Child and Adolescent Psychiatric Nursing
https://www.readbyqxmd.com/read/29349744/alleviation-of-iron-toxicity-in-schinus-terebinthifolius-raddi-anacardiaceae-by-humic-substances
#14
Leonardo Barros Dobbss, Tamires Cruz Dos Santos, Marco Pittarello, Sávio Bastos de Souza, Alessandro Coutinho Ramos, Jader Galba Busato
One of the industrial pillars of Espírito Santo state, South East of Brazil, is iron-mining products processing. This activity brings to a high level of coastal pollution due to deposition of iron particulate on fragile ecosystems as mangroves and restinga. Schinus therebinthifolius (aroeira) is a widespread restinga species. This work tested iron toxicity alleviation by vermicompost humic substances (HS) added to aroeira seedlings in hydroponic conditions. Catalase, peroxidase, and ascorbate peroxidase are antioxidant enzymes that work as reactive oxygen species (ROS) scavengers: they increase their activity as an answer to ROS concentration rise that is the consequence of metal accumulation or humic substance stimulation...
January 19, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29349531/an-all-in-one-pharmacophoric-architecture-for-the-discovery-of-potential-broad-spectrum-anti-flavivirus-drugs
#15
Nomagugu B Ncube, Pritika Ramharack, Mahmoud E S Soliman
A precipitous increase in the number of flaviviral infections has been noted over the last 5 years. Despite these outbreaks, treatment protocols for infected individuals remain ambiguous. Numerous studies have identified NITD008 as a potent flavivirus inhibitor; however, clinical testing was dismissed due to undesirable toxic effects. The binding landscape of NITD008 in complex with five detrimental flaviviruses at the RNA-dependent RNA polymerase active sites was explored. An "all-in-one" pharmacophore model was created for the design of small molecules that may inhibit a broad spectrum of flaviviruses...
January 18, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29348380/effect-of-nigella-sativa-seed-extract-for-hypertension-in-elderly-a-double-blind-randomized-controlled-trial
#16
Aulia Rizka, Siti Setiati, Aida Lydia, Esthika Dewiasty
BACKGROUND: Nigella sativa (NS) seed extract shows diuretic activity, inhibits sympathetic nervous system overactivity and increases the production of Nitric Oxide in in vivo studies, thus it has a potential use as an adjuvant antihypertensive for elderly population. This study aimed to determine the effect of Nigella sativa seed extract to systolic blood pressure (SBP) and diastolic blood pressure (DBP) of elderly patients with hypertension. METHODS: a double-blind, randomized controlled trial was conducted on elderly subjects with hypertension in three outpatient clinics in Cipto Mangunkusumo National Hospital Jakarta Indonesia from June to September 2011...
October 2017: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/29348134/cerebral-mitochondrial-microangiopathy-leads-to-leukoencephalopathy-in-mitochondrial-neurogastrointestinal-encephalopathy
#17
L L Gramegna, A Pisano, C Testa, D N Manners, R D'Angelo, E Boschetti, F Giancola, L Pironi, L Caporali, M Capristo, M L Valentino, G Plazzi, C Casali, M T Dotti, G Cenacchi, M Hirano, C Giordano, P Parchi, R Rinaldi, R De Giorgio, R Lodi, V Carelli, C Tonon
BACKGROUND AND PURPOSE: Mitochondrial neurogastrointestinal encephalopathy is a rare disorder due to recessive mutations in the thymidine phosphorylase gene, encoding thymidine phosphorylase protein required for mitochondrial DNA replication. Clinical manifestations include gastrointestinal dysmotility and diffuse asymptomatic leukoencephalopathy. This study aimed to elucidate the mechanisms underlying brain leukoencephalopathy in patients with mitochondrial neurogastrointestinal encephalopathy by correlating multimodal neuroradiologic features to postmortem pathology...
January 18, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29348075/benzalkonium-chloride-benzethonium-chloride-and-chloroxylenol-three-replacement-antimicrobials-are-more-toxic-than-triclosan-and-triclocarban-in-two-model-organisms
#18
Virinchipuram S Sreevidya, Kade A Lenz, Kurt R Svoboda, Hongbo Ma
With the recent ban of triclosan (TCS) and triclocarban (TCC) from some personal care products, many replacement antimicrobial compounds have been used. Yet the potential health risk and environmental impact of these replacement compounds are largely unknown. Here we investigated the toxicological effects of three commonly used replacement antimicrobials, benzalkonium chloride (BAC), benzethonium chloride (BEC), and chloroxylenol (CX) to two model organisms, the nematode C. elegans and zebrafish (Danio rerio), and compared them to the banned TCS and TCC...
January 15, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29346630/vitamin-d-toxicity-a-16-year-retrospective-study-at-an-academic-medical-center
#19
John P Lee, Michael Tansey, Jennifer G Jetton, Matthew D Krasowski
Background: Interest in vitamin D has increased during the past 2 decades, with a corresponding increase in laboratory testing of 25-hydroxyvitamin D [25(OH)D]. The vast majority of specimens tested display normal or deficient levels of 25(OH)D; concentrations rarely fall in the potentially toxic range. Methods: We performed a retrospective investigation of elevated 25(OH)D levels during a 16-year period at the University of Iowa Hospitals and Clinics (UIHC), a 734-bed tertiary-/quaternary-care academic medical center in the midwestern United States...
January 13, 2018: Laboratory Medicine
https://www.readbyqxmd.com/read/29346573/the-addition-of-bevacizumab-to-oxaliplatin-based-chemotherapy-impact-upon-hepatic-sinusoidal-injury-and-thrombocytopenia
#20
Michael J Overman, Renata Ferrarotto, Kanwal Raghav, Binsah George, Wei Qiao, Karime K Machado, Leonard B Saltz, Thibault Mazard, J N Vauthey, Paulo M Hoff, Brian Hobbs, Evelyn M Loyer, Scott Kopetz
Background: Oxaliplatin-based chemotherapy can cause hepatic sinusoidal injury (HSI), portal hypertension, and splenic sequestration of platelets. Evidence suggests that bevacizumab may protect against HSI. Methods: Two cohorts of metastatic colorectal cancer (CRC) were analyzed: a nonrandomized exploratory cohort of 184 patients treated at a single institution from 2003 to 2010 and a confirmatory cohort of 200 patients from a multi-institutional randomized trial (NO16966)...
January 15, 2018: Journal of the National Cancer Institute
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