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https://www.readbyqxmd.com/read/28934664/targeted-h-triggered-bubble-generating-nanosystems-for-effective-therapy-in-cancer-cells
#1
Zhili Deng, Menghuan Tang, Li Zhao, Yijuan Long, Zuhuang Wen, Yuan Cheng, Huzhi Zheng
A novel targeting drug delivery system for cancer therapy based on H(+)-triggered bubble-generating nanosystems (BGNSs) was engineered. First, hollow mesoporous silica nanoparticles (HMSNs) were used to load doxorubicin (DOX). Then, the obtained drug-loaded HMSNs were treated with NaHCO3 to prepare the BGNSs. The BGNSs were coated with polydopamine (pDA), and finally, folic acids (FA) were anchored on the nanosystems to obtain the desired nanoscale drug delivery system (BGNSs@pDA-FA). BGNSs@pDA-FA was effectively internalized by cancer cells through folate receptor-mediated endocytosis and generated CO2 bubbles under the acidic environment of the lysosomes, thus enhancing lysosomal membrane permeability (LMP) to release caspase-3 into the cytoplasm, resulting in cancer cell death via an apoptosis-like pathway...
September 14, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28934422/low-frequency-of-acquired-isoniazid-and-rifampicin-resistance-in-rifampicin-susceptible-pulmonary-tuberculosis-in-a-setting-of-high-hiv-1-infection-and-tuberculosis-coprevalence
#2
Neesha Rockwood, Frederick Sirgel, Elizabeth Streicher, Robin Warren, Graeme Meintjes, Robert J Wilkinson
Background: We estimated the incidence of acquired isoniazid and rifampicin resistance in rifampicin-susceptible tuberculosis in a setting of high human immunodeficiency virus type 1 (HIV-1) infection and tuberculosis coprevalence. Methods: GeneXpert MTB/RIF-confirmed patients with rifampicin-susceptible tuberculosis were recruited at antituberculosis treatment initiation in Khayelitsha, South Africa. Liquid culture and adherence assessment were performed at 2 and 5-6 months...
September 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28933055/safety-concerns-reported-by-patients-identified-in-a-collaborative-signal-detection-workshop-using-vigibase-results-and-reflections-from-lareb-and-uppsala-monitoring-centre
#3
Sarah Watson, Rebecca E Chandler, Henric Taavola, Linda Härmark, Birgitta Grundmark, Alem Zekarias, Kristina Star, Florence van Hunsel
INTRODUCTION: Patient reporting in pharmacovigilance is important and contributes to signal detection. However, descriptions of methodologies for using patient reports in signal detection are scarce, and published experiences of how patient reports are used in pharmacovigilance are limited to a few individual countries. OBJECTIVE: Our objective was to explore the contribution of patient reports to global signal detection in VigiBase. METHODS: Data were retrieved from VigiBase in September 2016...
September 20, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28933008/importance-of-publishing-adverse-drug-reaction-case-reports-promoting-public-health-and-advancing-pharmacology-and-therapeutics
#4
Rashmi R Shah
This article, which encourages physicians to publish case reports of adverse drug reactions (ADRs), is a review of how well-documented published case reports have contributed to promoting public safety and health and thus served to advance basic pharmacology. The origin of a number of regulatory guidelines can ultimately be traced to safety concerns triggered by such reports. It illustrates how case reports of ADRs, when coupled with simultaneous monitoring of drug pharmacokinetics, have also led to further investigations resulting in major advances in pharmacology, especially pharmacogenetics, mechanisms of drug-drug interactions and modulation of drug metabolism during inflammatory co-morbidities...
September 20, 2017: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/28932906/safety-study-and-therapeutic-drug-monitoring-of-the-oral-tablet-formulation-of-posaconazole-in-patients-with-haematological-malignancies
#5
C Boglione-Kerrien, S Picard, C Tron, S Nimubona, J-P Gangneux, S Lalanne, F Lemaitre, E Bellissant, M-C Verdier, A Petitcollin
PURPOSE: Posaconazole is a triazole antifungal widely used for prophylaxis of invasive fungal disease (IFI). Posaconazole tablets allow reaching higher plasma levels than the oral suspension, but safety data with this formulation in real life are scarce. This study aimed at evaluating the safety profile, the pharmacokinetic variability, and the concentration-toxicity relationship of posaconazole tablets in patients with haematological malignancies. METHODS: Sixty neutropenic patients treated with posaconazole tablets for prophylaxis of IFI were prospectively included in the study...
September 20, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28929668/-systematic-review-on-safety-of-sofren-injection
#6
Yi Que, Yan-Ming Xie, Xing Liao, Yi-Li Zhang
This systematic review aims to evaluate the drug safety of sofren injection in clinical studies. Seven databases were retrieved, and the articles were extracted by 2 researchers according to inclusion and exclusion criteria. Then the quality of all studies and extracted information was evaluated. Sixty three articles were finally included in our study, including 58 randomized controlled trials, 3 non randomized controlled trials, and 2 case reports. All studies included 5 872 patients. Intervention group had a total of 23 cases of adverse drug reaction(ADR), accounting for 0...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929453/effects-of-long-term-ingestion-of-white-tea-on-oxidation-produced-by-aging-and-acute-oxidative-damage-in-rats
#7
Cristóbal Espinosa Ruiz, Lorena Cabrera, José Ángel López-Jiménez, Salvador Zamora, Francisca Pérez-Llamas
The infusion tea extracted from the leaves of the plant Camellia sinensis can be used in the prevention of cancer, cardiovascular and neurodegenerative diseases, and aging, while adriamycin (ADR) is an anticancer drug that increases oxidative stress in cells. The present study evaluated the protective effect of the long-term consumption of white tea used at two different doses against the oxidative stress produced by aging and acute oxidation caused ADR treatment. At wearing, rats received distilled water (control), or 0...
September 19, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28927751/development-and-pharmaceutical-evaluation-of-the-anticancer-anthrafuran-cavitron-complex-a-prototypic-parenteral-drug-formulation
#8
Helen M Treshalina, Vladimir I Romanenko, Dmitry N Kaluzhny, Michael I Treshalin, Aleksey A Nikitin, Alexander S Tikhomirov, Andrey E Shchekotikhin
To improve the water solubility of the anticancer drug candidate LCTA-2034 (A1), we investigated the formation of complexes of this anthrax[2,3-b]furan congener with the solubilizing 2-hydroxypropyl derivative of β-cyclodextrin HP-βCD (Cavitron®). The interaction of A1 with HP-βCD resulted in the inclusion complex A1/HP-βCD in 1:1 stoichiometry. The A1/HP-βCD complex was used to develop a prototype of a lyophilised drug formulation with enhanced (>10-fold) aqueous solubility than A1 and a long-term stability...
September 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28927713/risk-factors-of-early-adverse-drug-reactions-with-phenytoin-a-prospective-inpatient-cohort
#9
Reinaldo Uribe-San-Martín, Ethel Ciampi, Wilhelm Uslar, Silvana Villagra, Jaime Godoy, Patricio Mellado
INTRODUCTION: Phenytoin (PHT) is an effective and inexpensive antiepileptic drug (AED). However, its use has been limited for fear of adverse drug reactions (ADRs) and is being replaced by newer AED, increasing the costs and causing major budget problems, particularly for developing countries. OBJECTIVE: The objective of this study was to determine ADR frequency, explore, and establish related risk factors. METHODS: Prospective data were collected from a cohort of inpatients using PHT for the first time...
September 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28927418/a-systematic-review-and-integrative-approach-to-decode-the-common-molecular-link-between-levodopa-response-and-parkinson-s-disease
#10
Debleena Guin, Manish Kumar Mishra, Puneet Talwar, Chitra Rawat, Suman S Kushwaha, Shrikant Kukreti, Ritushree Kukreti
BACKGROUND: PD is a progressive neurodegenerative disorder commonly treated by levodopa. The findings from genetic studies on adverse effects (ADRs) and levodopa efficacy are mostly inconclusive. Here, we aim to identify predictive genetic biomarkers for levodopa response (LR) and determine common molecular link with disease susceptibility. A systematic review for LR was conducted for ADR, and drug efficacy, independently. All included articles were assessed for methodological quality on 14 parameters...
September 19, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28925356/the-c-elegans-neural-editome-reveals-an-adar-target-mrna-required-for-proper-chemotaxis
#11
Sarah N Deffit, Brian A Yee, Aidan C Manning, Suba Rajendren, Pranathi Vadlamani, Emily C Wheeler, Alain Domissy, Michael C Washburn, Gene W Yeo, Heather A Hundley
ADAR proteins alter gene expression both by catalyzing adenosine (A) to inosine (I) RNA editing and binding to regulatory elements in target RNAs. Loss of ADARs affects neuronal function in all animals studied to date. Caenorhabditis elegans lacking ADARs exhibit reduced chemotaxis, but the targets responsible for this phenotype remain unknown. To identify critical neural ADAR targets in C. elegans, we performed an unbiased assessment of the effects of ADR-2, the only A-to-I editing enzyme in C. elegans, on the neural transcriptome...
September 19, 2017: ELife
https://www.readbyqxmd.com/read/28925169/-systematic-review-on-safety-of-salvianolate-injection
#12
Zhi-Wei Chen, Yan-Ming Xie, Xing Liao, Gui-Qian Wang
To systematically evaluate the safety of salvianolate injection in clinical medication. A systematic literature search was performed in the databases of Cochrane Library, Medline, Embase, the Web of Science, Clinical Trials, CNKI, VIP, WanFang Data and CBM. Literature screening was done according to inclusion and exclusion criteria, and quality was assessed according to internationally recognized quality evaluation criteria. Then the data were reviewed for analysis. 148 papers were included, consisting of 122 randomized controlled trials(RCTs), 10 non-randomized controlled trials(NRCTs), 4 case series studies, and 12 case reports...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28924350/pharmacovigilance-and-adverse-drug-reaction-reporting-a-perspective-of-community-pharmacists-and-pharmacy-technicians-in-sana-a-yemen
#13
Yaser Mohammed Al-Worafi, Yaman Walid Kassab, Wafa Mohammed Alseragi, Masaad Saeed Almutairi, Ali Ahmed, Long Chiau Ming, Ali Saleh Alkhoshaiban, Muhammad Abdul Hadi
OBJECTIVE: The aim of this study was to compare the knowledge, attitude and barriers of pharmacy technicians and pharmacists toward pharmacovigilance, adverse drug reactions (ADRs) and ADR reporting in community pharmacies in Yemen. METHODS: This cross-sectional survey was conducted among community pharmacists and pharmacy technicians in the capital of Yemen, Sana'a. A total of 289 community pharmacies were randomly selected. The validated and pilot-tested questionnaire consisted of six sections: demographic data, knowledge about pharmacovigilance, experience with ADR reporting, attitudes toward ADR reporting, and the facilitators to improve ADR reporting...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28919756/polymeric-mixed-micelles-loaded-mitoxantrone-for-overcoming-multidrug-resistance-in-breast-cancer-via-photodynamic-therapy
#14
Zeyong Li, Yuee Cai, Yiqiao Zhao, Hua Yu, Haiyu Zhou, Meiwan Chen
Mitoxantrone (MIT) is an anticancer agent with photosensitive properties that is commonly used in various cancers. Multidrug resistance (MDR) effect has been an obstacle to using MIT for cancer therapy. Photochemical internalization, on account of photodynamic therapy, has been applied to improve the therapeutic effect of cancers with MDR effect. In this study, an MIT-poly(ε-caprolactone)-pluronic F68-poly(ε-caprolactone)/poly(d,l-lactide-co-glycolide)-poly(ethylene glycol)-poly(d,l-lactide-co-glycolide) (MIT-PFP/PPP) mixed micelles system was applied to reverse the effect of MDR in MCF-7/ADR cells via photochemical reaction when exposed to near-infrared light...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28914370/thioredoxin-1-is-associated-with-the-proliferation-and-apoptosis-of-rheumatoid-arthritis-fibroblast-like-synoviocytes
#15
Tianbao Lu, Ming Zong, Shasha Fan, Ying Lu, Shanhan Yu, Lieying Fan
We aimed to investigate the possible effects of thioredoxin 1 (Trx1) on the proliferation and apoptosis of rheumatoid arthritis fibroblast-like synoviocytes (RA-FLSs) and elucidate the possible mechanisms involved. We investigated the distribution and expression of Trx1 in synovial tissues from RA and osteoarthritis (OA) patients by immunohistochemistry and real-time polymerase chain reaction (RT-PCR) analyses. RA-FLSs were isolated and cultured under normoxic (21% oxygen) or hypoxic (3% oxygen) concentrations...
September 15, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28914115/knowledge-attitudes-and-perspective-on-adverse-drug-reaction-reporting-in-a-public-sector-hospital-in-south-africa-baseline-analysis
#16
Antionette Terblanche, Johanna Catharina Meyer, Brian Godman, Robert Stanley Summers
BACKGROUND AND AIMS: Adverse drug reactions (ADRs) can cause significant harm in patients; however, ADRs are under-reported in many countries, including South Africa, where evidence of a pharmacovigilance (PV) system to monitor and manage ADRs is a requirement for compliance with norms and standards for quality healthcare delivery. We conducted an analysis amongst health care professionals (HCPs) at Sebokeng Hospital to assess the situation there. METHODS: Data were collected using a structured self-administered questionnaire, targeting all medical practitioners, nurses, pharmacists and pharmacist assistants in the hospital...
September 15, 2017: Hospital Practice (Minneapolis)
https://www.readbyqxmd.com/read/28913827/when-more-is-less-an-exploratory-study-of-the-precautionary-reporting-bias-and-its-impact-on-safety-signal-detection
#17
Kevin Klein, Joep Hg Scholl, Marie L De Bruin, Eugène P van Puijenbroek, Hubert Gm Leufkens, Pieter Stolk
Concerns have been expressed that large numbers of non-value added reports have been accumulating in ADR databases, for example via patient support programs. We performed an assessment of the impact of such reports, to which we refer to as 'precautionary reports', on safety signal detection in the Netherlands. The case narratives of ADR reports of three case products were screened with text-mining algorithms to identify those reports that lack a causal relationship with the suspected medicinal product. We demonstrate that precautionary reports impede the optimal use of the pharmacovigilance system by, on the one hand, masking safety signals and, on the other hand, creating spurious signals...
September 15, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28906425/impact-of-changeover-to-newer-endoscopic-systems-on-quality-and-efficiency-of-screening-and-surveillance-colonoscopy-equipment-or-endoscopist
#18
Manpreet Singh, Melody Sacatos, Loren Laine
GOALS: The goal of this study is to assess whether changeover to newer endoscopic systems impacts quality or efficiency, and quantify the relation between increased withdrawal time and detection rates of sessile serrated polyps (SSPDR) and adenomas (ADR) in real-world practice. STUDY: Beginning 2 months after new endoscopic systems were implemented at 2 endoscopy units, we included all outpatients undergoing screening/surveillance colonoscopy for 4 months. Outpatients during the same 4-month period 1 year earlier comprised the control group...
September 12, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28905435/isatin-induced-increase-in-the-affinity-of-human-ferrochelatase-and-adrenodoxin-reductase-interaction
#19
Pavel Ershov, Yuri Mezentsev, Andrey Gilep, Sergey Usanov, Olga Buneeva, Alexei Medvedev, Alexis Ivanov
Isatin (indol-2,3-dione) is an endogenous non-peptide regulator exhibiting a wide range of biological and pharmacological activities, which are poorly characterized in terms of their molecular mechanisms. Identification of many isatin-binding proteins in the mammalian brain and liver suggests that isatin may influence their functions. We have hypothesized that besides direct action on particular protein targets, isatin can act as a regulator of protein-protein interactions (PPIs). In this SPR-based biosensor study we have found that physiologically relevant concentrations of isatin (25-100 μM) increase affinity of interactions between human recombinant ferrochelatase (FECH) and NADPH-dependent adrenodoxin reductase (ADR)...
September 14, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28904507/adjunctive-melatonin-for-tardive-dyskinesia-in-patients-with-schizophrenia-a-meta-analysis
#20
Chen-Hui Sun, Wei Zheng, Xin-Hu Yang, Dong-Bin Cai, Chee H Ng, Gabor S Ungvari, Hai-Yan Li, Yu-Jie Wu, Yu-Ping Ning, Yu-Tao Xiang
BACKGROUND: Tardive dyskinesia (TD) is characterized by abnormal and involuntary movements. Importantly, TD could cause considerable personal suffering and social and physical disabilities. AIMS: This meta-analysis based on randomized controlled trials (RCTs) systematically assessed the therapeutic effect and tolerability of melatonin for TD in schizophrenia. METHODS: A computerized and systematical search of both Chinese (Wanfang Data, Chinese National Knowledge Infrastructure (CNKI), SINOMED) and English (PubMed, PsycINFO, Embase, Cochrane Library databases) databases, from their inception until June 8, 2017, was conducted by two independent authors...
June 25, 2017: Shanghai Archives of Psychiatry
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