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Cardiac Toxicity

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https://www.readbyqxmd.com/read/28636127/nonmediated-label-free-based-detection-of-cardiovascular-biomarker-in-a-biological-sample
#1
JuKyung Lee, SuRyon Shin, Anna Desalvo, Geonhui Lee, Jeong Yoon Lee, Alessandro Polini, Sukyoung Chae, Hobin Jeong, Jonghan Kim, Haksoo Choi, HeaYeon Lee
Direct electrochemical (EC) monitoring in a cell culture medium without electron transporter as called mediator is attractive topic in vitro organoid based on chip with frequently and long-time monitoring since it can avoid to its disadvantage as stability, toxicity. Here, direct monitoring with nonmediator is demonstrated based on impedance spectroscopy under the culture medium in order to overcome the limitation of mediator. The applicability of EC monitoring is shown by detecting alpha-1-anti trypsin (A1AT) which is known as biomarkers for cardiac damage and is widely chosen in organoid cardiac cell-based chip...
June 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28634147/csahi-study-2-validation-of-multi-electrode-array-systems-mea60-2100-for-prediction-of-drug-induced-proarrhythmia-using-human-ips-cell-derived-cardiomyocytes-assessment-of-reference-compounds-and-comparison-with-non-clinical-studies-and-clinical-information
#2
Yumiko Nozaki, Yayoi Honda, Hitoshi Watanabe, Shota Saiki, Kiyotaka Koyabu, Tetsuji Itoh, Chiho Nagasawa, Chiaki Nakamori, Chiaki Nakayama, Hiroshi Iwasaki, Shinobu Suzuki, Kohji Tanaka, Etsushi Takahashi, Kaori Miyamoto, Kaoru Morimura, Atsuhiro Yamanishi, Hiroko Endo, Junko Shinozaki, Hisashi Nogawa, Tadahiro Shinozawa, Fumiyo Saito, Takeshi Kunimatsu
With the aim of reconsidering ICH S7B and E14 guidelines, a new in vitro assay system has been subjected to worldwide validation to establish a better prediction platform for potential drug-induced QT prolongation and the consequent TdP in clinical practice. In Japan, CSAHi HEART team has been working on hiPS-CMs in the MEA (hiPS-CMs/MEA) under a standardized protocol and found no inter-facility or lot-to-lot variability for proarrhythmic risk assessment of 7 reference compounds. In this study, we evaluated the responses of hiPS-CMs/MEA to another 31 reference compounds associated with cardiac toxicities, and gene expression to further clarify the electrophysiological characteristics over the course of culture period...
June 17, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28633671/preliminary-safety-and-efficacy-profile-of-prucalopride-in-the-treatment-of-systemic-sclerosis-ssc-related-intestinal-involvement-results-from-the-open-label-cross-over-progass-study
#3
Barbara Vigone, Monica Caronni, Adriana Severino, Chiara Bellocchi, Anna Rita Baldassarri, Mirella Fraquelli, Gaia Montanelli, Alessandro Santaniello, Lorenzo Beretta
BACKGROUND: Prokinetics are used to treat enteric dismotility symptoms in systemic sclerosis (SSc) patients, but they often lack adequate efficacy. The most effective prokinetics belonging to the serotonin (5-HT4) receptor agonists class were withdrawn due to cardiac toxicity in relation to modest 5-HT4 receptor affinity. Prucalopride is a high-affinity 5-HT4 receptor agonist with no major cardiac issues, for which the efficacy in SSc has not yet been assessed. METHODS: Forty patients with self-reported mild to moderately severe enteric symptoms were enrolled in a cross-over 2 × 2 study...
June 20, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28629338/a-phase-2-randomized-trial-to-evaluate-the-impact-of-a-supervised-exercise-program-on-cardiotoxicity-at-3%C3%A2-months-in-patients-with-her2-overexpressing-breast-cancer-undergoing-adjuvant-treatment-by-trastuzumab-design-of-the-cardapac-study
#4
Quentin Jacquinot, Nathalie Meneveau, Marion Chatot, Franck Bonnetain, Bruno Degano, Malika Bouhaddi, Gilles Dumoulin, Dewi Vernerey, Xavier Pivot, Fabienne Mougin
BACKGROUND: The overexpression of human epidermal growth factor receptor-2 (HER2) in breast cancer is a poor prognosis. Trastuzumab improves overall survival but is associated with cardiotoxicity, especially a decline in left ventricular ejection fraction (LVEF). In addition, chemotherapy and radiotherapy increase fatigue and pain, decrease physical capacity and health-related quality of life. To date, no study has evaluated the benefits of physical activity on the side effects of treatment in patients with HER2 positive breast cancer...
June 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28628163/-quantitative-structure-activity-relationship-model-for-prediction-of-cardiotoxicity-of-chemical-components-in-traditional-chinese-medicines
#5
(no author information available yet)
OBJECTIVE: Some quantitative structure-activity relationship (QSAR) models have been developed to predict cardiac toxicity of drugs, which have limited predictive power due to based on hERG channel inhibition. The objective of this study was try to develop a QSAR model based on all kinds of cardiac adverse effects, and to predict the potential cardiotoxicity of chemical components in traditional Chinese medicines (TCM). METHODS: In this study, the compounds data of all kinds of cardiac adverse reactions were selected as the training set...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28626485/isolation-and-characterization-of-isofraxidin-7-o-6-o-p-coumaroyl-%C3%AE-glucopyranoside-from-artemisia-capillaris-thunberg-a-novel-nontoxic-hyperpigmentation-agent-that-is-effective-in-vivo
#6
Soon-Ho Yim, Nadia Tabassum, Woong-Hee Kim, Haaglim Cho, Ji-Hyung Lee, Galzad J Batkhuu, Hyun Jung Kim, Won Keun Oh, Da-Woon Jung, Darren R Williams
Abnormalities in skin pigmentation can produce disorders such as albinism or melasma. There is a research need to discover novel compounds that safely and effectively regulate pigmentation. To identify novel modulators of pigmentation, we attempted to purify compounds from a bioactive fraction of the Korean medicinal plant Artemisia capillaris Thunberg. The novel compound isofraxidin 7-O-(6'-O-p-coumaroyl)-β-glucopyranoside (compound 1) was isolated and its pigmentation activity was characterized in mammalian melanocytes...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28624452/fortunellin-protects-against-high-fructose-induced-diabetic-heart-injury-in-mice-by-suppressing-inflammation-and-oxidative-stress-via-ampk-nrf-2-pathway-regulation
#7
Cuihua Zhao, Yuan Zhang, Hongyang Liu, Peng Li, Han Zhang, Guanchang Cheng
Inflammation and oxidative stress contribute to the progression of diabetic cardiomyopathy (DCM). The study was first designed to calculate the role of an anti-inflammatory and anti-oxidant Fortunellin (For) in high fructose-induced cardiac injury in diabetic mice. Fortunellin was found to be none of toxicity to mice and cells using various assays. High fructose was used to induce mice with diabetes. The heart histopathological changes and cardiac function were measured. Fortunellin significantly attenuated the score of histopathological alterations and alleviated heart function, accompanied with reduced inflammation and oxidative stress...
June 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28622605/flexible-nanofilms-coated-with-aligned-piezoelectric-microfibers-preserve-the-contractility-of-cardiomyocytes
#8
P José Gouveia, S Rosa, L Ricotti, B Abecasis, H V Almeida, L Monteiro, J Nunes, F Sofia Carvalho, M Serra, S Luchkin, A Leonidovitch Kholkin, P Marques Alves, P Jorge Oliveira, R Carvalho, A Menciassi, R Pires das Neves, L Silva Ferreira
The use of engineered cardiac tissue for high-throughput drug screening/toxicology assessment remains largely unexplored. Here we propose a scaffold that mimics aspects of cardiac extracellular matrix while preserving the contractility of cardiomyocytes. The scaffold is based on a poly(caprolactone) (PCL) nanofilm with magnetic properties (MNF, standing for magnetic nanofilm) coated with a layer of piezoelectric (PIEZO) microfibers of poly(vinylidene fluoride-trifluoroethylene) (MNF+PIEZO). The nanofilm creates a flexible support for cell contraction and the aligned PIEZO microfibers deposited on top of the nanofilm creates conditions for cell alignment and electrical stimulation of the seeded cells...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28620382/phase-ii-study-of-adjuvant-immunotherapy-with-the-csf-470-vaccine-plus-bacillus-calmette-guerin-plus-recombinant-human-granulocyte-macrophage-colony-stimulating-factor-vs-medium-dose-interferon-alpha-2b-in-stages-iib-iic-and-iii-cutaneous-melanoma-patients
#9
José Mordoh, María Betina Pampena, Mariana Aris, Paula Alejandra Blanco, Mónica Lombardo, Erika María von Euw, Soledad Mac Keon, Michelle Yépez Crow, Alicia Inés Bravo, Juan Manuel O'Connor, Ana Gabriela Orlando, Franco Ramello, Estrella Mariel Levy, María Marcela Barrio
The irradiated, allogeneic, cellular CSF-470 vaccine plus Bacillus Calmette-Guerin (BCG) and recombinant human granulocyte macrophage-colony stimulating factor (rhGM-CSF) is being tested against medium-dose IFN-α2b in stages IIB-III cutaneous melanoma (CM) patients (pts) after surgery in an open, randomized, Phase II/III study. We present the results of the Phase II part of the ongoing CASVAC-0401 study (ClinicalTrials.gov: NCT01729663). Thirty-one pts were randomized to the CSF-470 vaccine (n = 20) or to the IFN-α2b arm (n = 11)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28616214/high-dose-hydroxocobalamin-for-vasoplegic-syndrome-causing-false-blood-leak-alarm
#10
Wisit Cheungpasitporn, John Hui, Kianoush B Kashani, Erica D Wittwer, Robert C Albright, John J Dillon
Blood leak alarms are important safety features in a hemodialysis machine to protect patients from loss of blood through a rupture in the dialyzer membrane (true alarms). A false blood leak alarm can be triggered by air bubbles or detector malfunction (such as deposits of grease or scale). Hydroxocobalamin is an injectable form of vitamin B12 approved by the US Food and Drug Administration for the treatment of confirmed or suspected cyanide toxicity. Due to observations of an increase in arterial pressure after high-dose hydroxocobalamin infusion for the treatment of acute cyanide poisoning, it has recently been reported as an off-label rescue treatment for post-cardiopulmonary bypass vasoplegic syndrome...
June 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28615223/daratumumab-yields-rapid-and-deep-hematologic-responses-in-patients-with-heavily-pretreated-al-amyloidosis
#11
Gregory P Kaufman, Stanley L Schrier, Richard A Lafayette, Sally Arai, Ronald M Witteles, Michaela Liedtke
The majority of patients with immunoglobulin light chain amyloidosis (AL) fail to achieve a complete response (CR) to standard light chain suppressive chemotherapy, and almost all patients eventually experience hematologic relapse and progression of organ involvement; additional well tolerated treatment options are therefore needed. We present our retrospective experience of 25 consecutive previously treated AL patients who received daratumumab, a CD38-directed monoclonal antibody approved for the treatment of multiple myeloma...
June 14, 2017: Blood
https://www.readbyqxmd.com/read/28614979/docetaxel-induced-cardiac-respiratory-arrest-in-a-patient-with-chronic-atrial-fibrillation
#12
Mostaqul Huq, Tracie M Balvanz, Scott Mambourg
Docetaxel has been approved by the Food and Drug Administration for the treatment of many cancer types, including breast cancer, head and neck cancer, lung cancer, and prostate cancer. Many severe to life-threatening side effects (Grades 3-5) of docetaxel have been reported in clinical trials, case reports, and Food and Drug Administration Adverse Events Reporting System. These include anaphylactic reactions, febrile neutropenia, fluid retention, acute respiratory distress, pleural effusion, pneumonia, and peripheral neuropathy...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28614669/severe-pneumococcal-pneumonia-causes-acute-cardiac-toxicity-and-subsequent-cardiac-remodeling
#13
Luis F Reyes, Marcos I Restrepo, Cecilia A Hinojosa, Nilam J Soni, Antonio Anzueto, Bettina L Babu, Norberto Gonzalez-Juarbe, Alejandro H Rodriguez, Alejandro Jimenez, James D Chalmers, Stefano Aliberti, Oriol Sibila, Vicki T Winter, Jacqueline J Coalson, Luis D Giavedoni, Charles S Dela Cruz, Grant W Waterer, Martin Witzenrath, Norbert Suttorp, Peter H Dube, Carlos J Orihuela
RATIONALE: Up to one-third of the patients hospitalized with pneumococcal pneumonia experience major adverse cardiac events (MACE) during or after pneumonia. In mice, Streptococcus pneumoniae can invade the myocardium, induce cardiomyocyte death, and disrupt cardiac function following bacteremia, but it is unknown whether the same occurs in humans with severe pneumonia. OBJECTIVE: We sought to determine whether S. pneumoniae can 1) translocate the heart, 2) induce cardiomyocyte death, 3) cause MACE, and 4) induce cardiac scar formation post-antibiotic treatment during severe pneumonia using a non-human primates (NHP) model...
June 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28614664/molecular-mechanisms-of-developmental-toxicity-induced-by-graphene-oxide-at-predicted-environmental-concentrations
#14
Xingli Zhang, Qixing Zhou, Wei Zou, Xiangang Hu
Developmental toxicity is a critical issue in nanotoxicity. However, very little is known about the effects of graphene oxide (GO, a widely used carbon material) at predicted environmental concentrations on biological development or the specific molecular mechanisms. The present study established that the development of zebrafish embryos exposed to trace concentrations (1-100 μg/L) of GO was impaired because of DNA modification, protein carbonylation and excessive generation of reactive oxygen species (ROS), especially the superoxide radical...
June 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28611540/evaluation-of-qtc-interval-prolongation-in-breast-cancer-patients-after-treatment-with-epirubicin-cyclophosphamide-and-docetaxel-and-the-influence-of-interobserver-variation
#15
Julian Puppe, Deborah van Ooyen, Jeanne Neise, Fabinshy Thangarajah, Christian Eichler, Stefan Krämer, Roman Pfister, Peter Mallmann, Marina Wirtz, Guido Michels
BACKGROUND: Chemotherapy with anthracyclines is associated with life-threatening electrocardiographic alterations including corrected QT (QTc) interval prolongation. PATIENTS AND METHODS: In this study we assessed the effect of epirubicin, cyclophosphamide, and docetaxel (EC-Doc) on the QTc interval in 10 patients with early breast cancer. Cardiac toxicity was assessed with symptoms, transthoracic echocardiography, electrocardiography (ECG), and serum cardiac markers at baseline and after 4 cycles of EC and 4 cycles of docetaxel...
March 2017: Breast Care
https://www.readbyqxmd.com/read/28608259/js-k-a-gst-activated-nitric-oxide-donor-prodrug-enhances-chemo-sensitivity-in-renal-carcinoma-cells-and-prevents-cardiac-myocytes-toxicity-induced-by-doxorubicin
#16
Mingning Qiu, Longzhi Ke, Sai Zhang, Xin Zeng, Zesong Fang, Jianjun Liu
PURPOSE: Doxorubicin, a highly effective and widely used anthracycline antibiotic in multiple chemotherapy regimens, has been limited by its cardiotoxicity. The aim of this study is to investigate the effect of nitric oxide donor prodrug JS-K on proliferation and apoptosis in renal carcinoma cells and cardiac myocytes toxicity induced by Doxorubicin and to explore possible p53-related mechanism in renal carcinoma cells. METHODS: The effect of JS-K on anti-cancer activity of Doxorubicin was investigated in renal carcinoma cells via detecting cell proliferation, cytotoxicity, cell death and apoptosis and expressions of apoptotic-related proteins...
June 12, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28606950/pathophysiology-of-takotsubo-syndrome
#17
REVIEW
Francesco Pelliccia, Juan Carlos Kaski, Filippo Crea, Paolo G Camici
Originally described by Japanese authors in the 1990s, Takotsubo syndrome (TTS) generally presents as an acute myocardial infarction characterized by severe left ventricular dysfunction. TTS, however, differs from an acute coronary syndrome because patients have generally a normal coronary angiogram and left ventricular dysfunction, which extends beyond the territory subtended by a single coronary artery and recovers within days or weeks. The prognosis was initially thought to be benign, but subsequent studies have demonstrated that both short-term mortality and long-term mortality are higher than previously recognized...
June 13, 2017: Circulation
https://www.readbyqxmd.com/read/28606508/tumor-specific-delivery-of-doxorubicin-through-conjugation-of-ph-responsive-peptide-for-overcoming-drug-resistance-in-cancer
#18
Chunlai Feng, Mengjie Rui, Haijun Shen, Yuanrong Xin, Jie Zhang, Jun Li, Lixiang Yue, Wenlong Lai, Ximing Xu
The major obstacles opposed to doxorubicin (Dox) based chemotherapy are the induction of drug resistance, together with non-specific toxicities for healthy cells. In this study, we prepared a peptide-Dox conjugate aimed at offering Dox molecules a tumor-specific functionality and improving the therapeutic effects of Dox against resistant tumor cells. A slightly acidic pH-sensitive peptide (SAPSP) with high selectivity for cancer cells was attached to Dox to obtain SAPSP-Dox prodrug. The structures and properties of this prodrug were characterized, confirming several merits, including desirable pH-sensitive property, good serum stability and favorable release behavior...
June 9, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28602412/definitive-chemoradiation-therapy-for-esophageal-cancer-in-the-elderly-clinical-outcomes-for-patients-exceeding-80%C3%A2-years-old
#19
Cai Xu, Mian Xi, Amy Moreno, Yutaka Shiraishi, Brian P Hobbs, Meilin Huang, Ritsuko Komaki, Steven H Lin
PURPOSE: The optimal treatment approach for patients ≥80 years ("elderly") with esophageal cancer is not well established. We assessed the clinical outcomes in elderly patients treated with definitive chemoradiation therapy (CCRT) at our institution. METHODS AND MATERIALS: 56 consecutive patients ≥80 years with esophageal cancer treated with conventional CCRT between 2001 and 2016 were propensity score matched 1:2 to generate 2 younger patient cohorts treated with CCRT without surgery: "intermediate" (65-79 years, n=112) and "younger" (<65 years, n=112)...
July 15, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28601492/new-agents-in-multiple-myeloma-an%C3%A2-examination-of-safety-profiles
#20
REVIEW
Sara Bringhen, Edwin De Wit, Meletios-Athanassios Dimopoulos
Numerous treatments are available for relapsed and/or refractory multiple myeloma (MM), with safety profiles varying across drug classes and across agents within the same class. Thus, it is important to understand the toxicities of each antimyeloma agent when making treatment decisions. Neutropenia is commonly associated with lenalidomide and pomalidomide, and may be common with histone deacetylase (HDAC) inhibitors, but is relatively unusual with thalidomide, bortezomib, and carfilzomib. Infection was common in trials of lenalidomide and pomalidomide, and upper respiratory tract infection and pneumonia have been seen with carfilzomib...
May 10, 2017: Clinical Lymphoma, Myeloma & Leukemia
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