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https://www.readbyqxmd.com/read/28231523/synergistic-effects-between-a-copper-based-metal-casiope%C3%A3-na-iii-ia-and-cisplatin
#1
Silvia Graciela Davila-Manzanilla, Yeshenia Figueroa-de-Paz, Carmen Mejia, Lena Ruiz-Azuara
Additive, subadditive or superadditive interactions observed in combination therapy play an important role in several treatments, particularly for cancer. The isobolographic analysis allows to establish the pharmacological interactions that exist between two drugs that are administered together in equieffective doses. In order to identify if the combination of two compounds presents synergistic interaction, the antiproliferative activity of CasIII-ia with analogue compounds or cisplatin in different molar ratios was evaluated...
February 3, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28231504/effect-of-biochar-on-cadmium-bioavailability-and-uptake-in-wheat-triticum-aestivum-l-grown-in-a-soil-with-aged-contamination
#2
Tahir Abbas, Muhammad Rizwan, Shafaqat Ali, Muhammad Zia-Ur-Rehman, Muhammad Farooq Qayyum, Farhat Abbas, Fakhir Hannan, Jörg Rinklebe, Yong Sik Ok
Cadmium (Cd) is a well-known and widespread toxic heavy metal while the effects of biochar (BC) on Cd bioavailability and toxicity in wheat, especially in soils with aged contamination are largely unknown. In the present study, the effect of rice straw BC on Cd immobilization in soil and uptake by wheat in an agricultural contaminated-soil was investigated. Different levels of rice straw BC (0%, 1.5%, 3.0% and 5% w/w) were incorporated into the soil and incubated for two weeks. After this, wheat plants were grown in the amended soil until maturity...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28231431/enhancing-adoptive-cell-therapy-of-cancer-through-targeted-delivery-of-small-molecule-immunomodulators-to-internalizing-or-non-internalizing-receptors
#3
Yiran Zheng, Li Tang, Llian Mabardi, Sudha Kumari, Darrell J Irvine
Adoptive cell therapy (ACT) has achieved striking efficacy in B-cell leukemias, but less success treating other cancers, in part due to the rapid loss of ACT T-cell effector function in vivo due to immunosuppression in solid tumors. Transforming growth factor-β (TGF-β) signaling is an important mechanism of immune suppression in the tumor microenvironment, but systemic inhibition of TGF-β is toxic. Here we evaluated the potential of targeting a small molecule inhibitor of TGF-β to ACT T-cells using PEGylated immunoliposomes...
February 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28230783/acute-toxicities-of-the-saxitoxin-congeners-gonyautoxin-5-gonyautoxin-6-decarbamoyl-gonyautoxin-2-3-decarbamoyl-neosaxitoxin-c-1-2-and-c-3-4-to-mice-by-various-routes-of-administration
#4
Andrew I Selwood, Craig Waugh, David T Harwood, Lesley L Rhodes, John Reeve, Jim Sim, Rex Munday
Paralytic shellfish poisoning results from consumption of seafood naturally contaminated by saxitoxin and its congeners, the paralytic shellfish toxins (PSTs). The levels of such toxins are regulated internationally, and maximum permitted concentrations in seafood have been established in many countries. A mouse bioassay is an approved method for estimating the levels of PSTs in seafood, but this is now being superseded in many countries by instrumental methods of analysis. Such analyses provide data on the levels of many PSTs in seafood, but for risk assessment, knowledge of the relative toxicities of the congeners is required...
February 21, 2017: Toxins
https://www.readbyqxmd.com/read/28229908/multiple-myeloma-tumor-cells-are-selectively-killed-by-pharmacologically-dosed-ascorbic-acid
#5
Jiliang Xia, Hongwei Xu, Xiaoyan Zhang, Chantal Allamargot, Kristen L Coleman, Randy Nessler, Ivana Frech, Guido Tricot, Fenghuang Zhan
High-dose chemotherapies to treat multiple myeloma (MM) can be life-threatening due to toxicities to normal cells and there is a need to target only tumor cells and/or lower standard drug dosage without losing efficacy. We show that pharmacologically-dosed ascorbic acid (PAA), in the presence of iron, leads to the formation of highly reactive oxygen species (ROS) resulting in cell death. PAA selectively kills CD138(+) MM tumor cells derived from MM and smoldering MM (SMM) but not from monoclonal gammopathy undetermined significance (MGUS) patients...
February 16, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28229903/acute-and-subchronic-toxicity-studies-of-methanol-extract-of-polygonum-minus-leaves-in-sprague-dawley-rats
#6
Parayil Varghese Christapher, Subramani Parasuraman, Mohd Zaini Asmawi, Vikneswaran Murugaiyah
Medicinal plant preparations may contain high levels of toxic chemical constituents to potentially cause serious harm to animals and/or humans. Thus, toxicity studies are important to assess the toxic effects of plant derived products. Polygonum minus is used traditionally for different ailments in Southeast Asia. This study was conducted to establish the acute and subchronic toxicity profile of the methanol extract of P. minus leaves. The acute toxicity study showed that the methanol extract of P. minus is safe even at the highest dose tested of 2000 mg/kg in female Sprague Dawley rats...
February 13, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28228078/nanocarriers-mediated-topical-drug-delivery-for-psoriasis-treatment
#7
Sevgi Güngör, Meriem Rezigue
BACKGROUND: Psoriasis is a chronic autoimmune inflammatory skin disease affecting 2 to 3% of people worldwide. Topical therapy as first option in the management of psoriasis is an attractive strategy by delivering drugs efficiently into target sites of disease, minimizing systemic side effects of drugs and ensuring high patient compliance. However, the delivery of antipsoriatic agents via conventional topical formulations is limited due to their poor percutaneous penetration and targeting into deeper layers of the skin...
February 22, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28226512/hyperthermia-by-electromagnetic-fields-to-enhanced-clinical-results-in-oncology
#8
Gerard C van Rhoon, Maarten M Paulides, Jeannette M L van Holthe, Martine Franckena, Gerard C van Rhoon, Maarten M Paulides, Jeannette M L van Holthe, Martine Franckena, Maarten M Paulides, Martine Franckena, Gerard C van Rhoon, Jeannette M L van Holthe
Confining treatment to the tumor to improve therapeutic outcome and reduce toxicity, is a hot issue in cancer research. Hyperthermia is recognized as a strong sensitizer for radiotherapy and chemotherapy enhancing tumor control without increasing toxicity. Today's electromagnetic hyperthermia systems heat large tissue volumes with limited ability to selectively heat the tumor. Fortunately, tremendous improvements in 3-dimensional electromagnetic & temperature modelling provide an exciting opportunity to design advanced multi-element electromagnetic applicator systems...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226245/subconjunctival-injectable-dendrimer-dexamethasone-gel-for-the-treatment-of-corneal-inflammation
#9
Uri Soiberman, Siva P Kambhampati, Tony Wu, Manoj K Mishra, Yumin Oh, Rishi Sharma, Jiangxia Wang, Abdul Elah Al Towerki, Samuel Yiu, Walter J Stark, Rangaramanujam M Kannan
Corneal inflammation is often encountered as a key pathological event in many corneal diseases. Current treatments involve topical corticosteroids which require frequent instillations due to rapid tear turnover, causing side-effects such as corneal toxicity and elevated intraocular pressure (IOP). Hence, new interventions that can reduce side effects, dosing frequency, and increase patient compliance can be highly beneficial. In this study, we explore a subconjunctival injectable gel based on G4-PAMAM dendrimer and hyaluronic acid, cross-linked using thiol-ene click chemistry, incorporated with dendrimer dexamethasone (D-Dex) conjugates as a potential strategy for sustained delivery and enhanced bioavailability of corticosteroids...
February 16, 2017: Biomaterials
https://www.readbyqxmd.com/read/28226195/global-transcriptional-response-of-human-liver-cells-to-ethanol-stress-of-different-strength-reveals-hormetic-behavior
#10
Wolfgang Schmidt-Heck, Eva C Wönne, Thomas Hiller, Uwe Menzel, Dirk Koczan, Georg Damm, Daniel Seehofer, Fanny Knöspel, Nora Freyer, Reinhard Guthke, Steven Dooley, Katrin Zeilinger
BACKGROUND: The liver is the major site for alcohol metabolism in the body and therefore, the primary target organ for ethanol-induced toxicity. In this study, we investigated the in vitro response of human liver cells to different ethanol concentrations in a perfused bioartificial liver device that mimics the complex architecture of the natural organ. METHODS: Primary human liver cells were cultured in the bioartificial liver device and treated for 24 hours with medium containing 150 mM (low), 300 mM (medium) or 600 mM (high) ethanol, while a control culture was kept untreated...
February 22, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28225490/clinical-characteristics-and-outcome-of-spanish-patients-with-anca-associated-vasculitides-impact-of-the-vasculitis-type-anca-specificity-and-treatment-on-mortality-and-morbidity
#11
Roser Solans-Laqué, Guadalupe Fraile, Monica Rodriguez-Carballeira, Luis Caminal, Maria J Castillo, Ferran Martínez-Valle, Luis Sáez, Juan J Rios, Xavier Solanich, Joaquim Oristrell, Francisco Pasquau, Eva Fonseca, Monica Zamora, Jose L Callejas, Begoña Frutos, Monica Abdilla, Patricia Fanlo, Isabel García-Sánchez, Miguel López-Dupla, Bernardo Sopeña, Almudena Pérez-Iglesias, Josep A Bosch
The aim of this study was to describe the clinical characteristics of ANCA-associated vasculitides (AAV) at presentation, in a wide cohort of Spanish patients, and to analyze the impact of the vasculitis type, ANCA specificity, prognostic factors, and treatments administered at diagnosis, in the outcome.A total of 450 patients diagnosed between January 1990 and January 2014 in 20 Hospitals from Spain were included. Altogether, 40.9% had granulomatosis with polyangiitis (GPA), 37.1% microscopic polyangiitis (MPA), and 22% eosinophilic granulomatosis with polyangiitis (EGPA)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225482/a-case-report-of-posterior-reversible-encephalopathy-syndrome-in-a-patient-receiving-gemcitabine-and-cisplatin
#12
Hannah Cherniawsky, Neesha Merchant, Micheal Sawyer, Maria Ho
RATIONALE: Posterior reversible encephalopathy syndrome (PRES) is a subacute syndrome causing characteristic neurologic and radiologic findings. PRES is predominantly caused by malignant hypertension though it has been associated with immunosuppressive treatments such as chemotherapy. PATIENT CONCERNS: We describe a case of a 58 year old female who developed fluctuant level of consciousness, agitation. DIAGNOSIS: MRI findings were in keeping with posterior reversible encephalopathy syndrome following cycle 6 of palliative gemcitabine and cisplatin therapy for metastatic cholangiocarcinoma...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225374/characterizing-the-toxicity-and-dose-effect-profile-of-tramadol-ingestions-in-children
#13
Gina L Stassinos, Lawrence Gonzales, Wendy Klein-Schwartz
OBJECTIVES: Tramadol can cause life-threatening toxicity in overdose; however, data on its toxicity in children are lacking. This study investigates toxicity associated with tramadol ingestions in children. The hypothesis is that children will experience dose-related central nervous system and respiratory depression and seizures. METHODS: A retrospective evaluation of cases from the National Poison Center Data System between January 1, 2000, and December 31, 2013, was performed...
February 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28225161/treatment-of-experimental-status-epilepticus-with-synergistic-drug-combinations
#14
Jerome Niquet, Roger Baldwin, Lucie Suchomelova, Lucille Lumley, Roland Eavey, Claude G Wasterlain
During status epilepticus (SE), synaptic γ-aminobutyric acid A receptors (GABAA Rs) become internalized and inactive, whereas spare N-methyl-d-aspartate receptors (NMDARs) assemble, move to the membrane, and become synaptically active. When treatment of SE is delayed, the number of synaptic GABAA Rs is drastically reduced, and a GABAA agonist cannot fully restore inhibition. We used a combination of low-dose diazepam (to stimulate the remaining GABAA Rs), ketamine (to mitigate the effect of the NMDAR increase), and valproate (to enhance inhibition at a nonbenzodiazepine site) to treat seizures in a model of severe cholinergic SE...
February 22, 2017: Epilepsia
https://www.readbyqxmd.com/read/28224975/intraperitoneal-infusion-of-neutral-ph-superoxidized-solution-in-rats-evaluation-of-toxicity-and-complications-on-peritoneal-surface-and-liver
#15
Abbas Aras, Erbil Karaman, Serkan Yıldırım, Özkan Yılmaz, Remzi Kızıltan, Kamuran Karaman
BACKGROUND Superoxidized water (SOW) is known to be a potent disinfectant. The aim of this study was to evaluate the toxicity and complications on the peritoneal surface and liver after infusion of pH-neutral SOW into the peritoneal cavity of rats. MATERIAL AND METHODS Thirty Wistar-Albino rats weighing 250-300 g were randomly divided into 3 groups (10 rats/group). Group1 (control group) rats received single dose of 10 mg/kg saline solution intraperitoneally. Group 2 (single-dose group) rats received a single dose of 10 mg/kg pH-neutral SOW intraperitoneally...
February 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28224702/early-platelet-and-leukocyte-decline-in-patients-with-neuroinflammatory-disorders-after-intravenous-immunoglobulins
#16
A Totzeck, M Stettner, T Hagenacker
BACKGROUND AND PURPOSE: Intravenous immunoglobulins (IVIGs) are a common therapy in patients with neuroinflammatory disorders, especially chronic inflammatory demyelinating polyradiculoneuropathy or Guillain-Barré syndrome. Hematological toxicities upon IVIG infusion are a known side effect and still an important subject of investigation. METHODS: Laboratory results and data for clinical efficacy and tolerability of 62 patients with neuroinflammatory disorders treated with IVIG (0...
February 22, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28224367/novel-treatment-with-intraperitoneal-moc31pe-immunotoxin-in-colorectal-peritoneal-metastasis-results-from-the-immunopeca-phase-1-trial
#17
Ida S Frøysnes, Yvonne Andersson, Stein G Larsen, Ben Davidson, Janne-Merete Torset Øien, Kari Hauge Olsen, Karl-Erik Giercksky, Lars Julsrud, Øystein Fodstad, Svein Dueland, Kjersti Flatmark
BACKGROUND: MOC31PE immunotoxin was developed to rapidly kill cells expressing the tumor-associated epithelial cell adhesion molecule, which is highly expressed in colorectal cancer. Although cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) may offer long-term survival to patients with peritoneal metastasis from colorectal cancer (PM-CRC), most patients experience disease relapse and novel therapeutic options are needed. On this basis, MOC31PE is being developed as a novel therapeutic principle to target PM-CRC...
February 21, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28224231/nc-6004-phase-i-study-in-combination-with-gemcitabine-for-advanced-solid-tumors-and-population-pk-pd-analysis
#18
Toshihiko Doi, Tetsuya Hamaguchi, Kohei Shitara, Satoru Iwasa, Yasuhiro Shimada, Mitsunori Harada, Kenichiro Naito, Naoto Hayashi, Atsuhiro Masada, Atsushi Ohtsu
OBJECTIVES: This study was an open-label phase I study to confirm the safety and tolerability of NC-6004 in combination with gemcitabine in Japanese patients with advanced solid tumors and to assess the PK effects of NC-6004 monotherapy. METHODS: This phase I study used a 3 + 3 design to determine the maximum tolerated dose (MTD) and recommended dose of NC-6004 combined with gemcitabine. Safety and pharmacokinetics were assessed. The administration of NC-6004 alone was started at 60 mg/m(2) every treatment cycle (21 days per cycle)...
February 21, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28223672/-influence-of-next-day-administration-of-pegfilgrastim-after-fec100-chemotherapy-in-japanese-with-breast-cancer-on-neutrophil-count
#19
Daichiro Fujiwara, Keiji Mashimo, Kayo Kimura, Akihiro Noda, Kazuo Taki, Hiroshi Yoshibayashi, Tomoya Takeda, Masanobu Tsubaki, Shozo Nishida, Katsuhiko Sakaguchi
Febrile neutropenia(FN)is one of the serious treatment-related toxicities after FEC100(5-fluorouracil 500mg/m2, epiru- bicin 100mg/m2, cyclophosphamide 500 mg/m2)chemotherapy for breast cancer. Granulocyte-colony stimulating factor(GCSF) is used as a support therapy for FN. Thus, we evaluated retrospectively the safety of administering pegfilgrastim the day after FEC100 chemotherapy in Japanese patients with breast cancer as compared with lenograstim. Grade 3 or 4 neutropenia was observed in 91.7% patients after pegfilgrastim administration and in 63...
February 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28223486/serum-borne-bioactivity-caused-by-pulmonary-multiwalled-carbon-nanotubes-induces-neuroinflammation-via-blood-brain-barrier-impairment
#20
Mario J Aragon, Lauren Topper, Christina R Tyler, Bethany Sanchez, Katherine Zychowski, Tamara Young, Guy Herbert, Pamela Hall, Aaron Erdely, Tracy Eye, Lindsey Bishop, Samantha A Saunders, Pretal P Muldoon, Andrew K Ottens, Matthew J Campen
Pulmonary exposure to multiwalled carbon nanotubes (MWCNTs) causes indirect systemic inflammation through unknown pathways. MWCNTs translocate only minimally from the lungs into the systemic circulation, suggesting that extrapulmonary toxicity may be caused indirectly by lung-derived factors entering the circulation. To assess a role for MWCNT-induced circulating factors in driving neuroinflammatory outcomes, mice were acutely exposed to MWCNTs (10 or 40 µg/mouse) via oropharyngeal aspiration. At 4 h after MWCNT exposure, broad disruption of the blood-brain barrier (BBB) was observed across the capillary bed with the small molecule fluorescein, concomitant with reactive astrocytosis...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
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