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Conversational agents

Tulsankar Sachin Laxman, Santosh Puttervu, Anjali Mishra, Sarvesh Verma, S P Singh, K V Sashidhara, C M Marandi, Shivani Saxena, Manoj K Yadav, Rabi S Bhatta
1) 16α-hydroxycleroda-3, 13(14) Z -dien-15, 16-olide (4655K-09 or K-09) is a novel clerodane diterpene lactone reported for its anti hyperlipidemic efficacy. The objective of the present study was to investigate the probable reversible metabolism of 4655K-09 and evaluate its effects on pharmacokinetic (PK) properties. 2) The PK studies were carried out through intravenous (IV) bolus administration of 4655K-09 and K-9T in mice at a dose of 3, 6, and 12 mg/kg separately. The oral PK study of 4655K-09 were carried out at therapeutic dose of 25 mg/kg...
March 22, 2018: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
K Vienola, G Jurgens, J Vuorenmaa, J Apajalahti
1. Studies were conducted with tall oil fatty acids (TOFA) to determine their effect on broiler chicken performance and ileal microbiota. TOFA, a product originating from coniferous trees and recovered by fractional distillation of side-streams from pulp production, mainly comprises free long-chain fatty acids (~90%) and resin acids (~8%). Conjugated linolenic acids and pinolenic acid are characteristic fatty acid components of TOFA. 2. TOFA products at 750 mg/kg feed were tested in two 35-day broiler chicken trials, each using a wheat soya-based diet and with 12 replicate pens per treatment...
March 22, 2018: British Poultry Science
Xiaoyan Yang, Dongya Wang, Yunhao Shi, Jianhua Zou, Qisen Zhao, Qi Zhang, Wei Huang, Jinjun Shao, Xiaoji Xie, Xiaochen Dong
In preclinical and clinical research, to destroy cancers, particularly those located in deep tissues is still a great challenge. Photodynamic therapy and photothermal therapy are promising alternative approaches for tissue cancer curing. Black phosphorus (BP) based nanomaterials, with broad UV-vis near-infrared (NIR) absorbance and excellent photothermal effect, have shown great potential in biomedical applications. Herein, a biocompatible therapeutic platform, Chlorin e6 (Ce6) decorated BP nanosheets (NSs), has been developed for fluorescence and thermal imaging guided photothermal and photodynamic synergistic cancer treatment...
March 22, 2018: ACS Applied Materials & Interfaces
Kimberly N Means, Amanda E Gentry, Tammy T Nguyen
Introduction: Atrial fibrillation (AF) is a common diagnosis of patients presenting to the emergency department (ED). Intravenous (IV) diltiazem bolus is often the initial drug of choice for acute management of AF with rapid ventricular response (RVR). The route of diltiazem after the initial IV loading dose may influence the disposition of the patient from the ED. However, no studies exist comparing oral (PO) immediate release and IV continuous infusion diltiazem in the emergency setting...
March 2018: Western Journal of Emergency Medicine
Lewis S Gall, Paul Vulliamy, Scarlett Gillespie, Timothy F Jones, Rochelle S J Pierre, Sabine E Breukers, Christine Gaarder, Nicole P Juffermans, Marc Maegele, Jakob Stensballe, Pär I Johansson, Ross A Davenport, Karim Brohi
OBJECTIVE: To determine the characteristics of trauma patients with low levels of fibrinolysis as detected by viscoelastic hemostatic assay (VHA) and explore the underlying mechanisms of this subtype. BACKGROUND: Hyperfibrinolysis is a central component of acute traumatic coagulopathy but a group of patients present with low levels of VHA-detected fibrinolysis. There is concern that these patients may be at risk of thrombosis if empirically administered an antifibrinolytic agent...
March 19, 2018: Annals of Surgery
Zhuang Liu, Han Lin, Menglong Zhao, Chen Dai, Shengjian Zhang, Weijun Peng, Yu Chen
Background : The emergence of two-dimensional MXenes has spurred their versatile applications in broad fields, but the exploring of novel MXene-based family members and their potential applications in theranostic nanomedicine (concurrent diagnostic imaging and therapy) have been rarely explored. In this work, we report the construction of a novel superparamagnetic MXene-based theranostic nanoplatform for efficient breast-cancer theranostics, which was based on intriguing tantalum carbide (Ta4 C3 ) MXene and its further rational surface-superparamagnetic iron-oxide functionalization (Ta4 C3 -IONP-SPs composite MXenes) for efficient breast-cancer theranostic...
2018: Theranostics
Liang Zhang, Danli Sheng, Dong Wang, Yuanzhi Yao, Ke Yang, Zhigang Wang, Liming Deng, Yu Chen
Background: The construction of theranostic nanosystems with concurrently high biosafety and therapeutic performance is a challenge but has great significance for the clinical translation of nanomedicine for combating cancer. Methods: Bio-inspired melanin-based nanoliposomes (Lip-Mel) as theranostic agents were constructed for simultaneous photoacoustic (PA) imaging- and T1 -weighted magnetic resonance (MR) imaging-guided photothermal ablation of tumors, which was demonstrated both in vitro and in vivo . The high biosafety of Lip-Mel was also systematically evaluated...
2018: Theranostics
Nagraj Mani, Andrew G Cole, Janet R Phelps, Andrzej Ardzinski, Kyle D Cobarrubias, Andrea Cuconati, Bruce D Dorsey, Ellen Evangelista, Kristi Fan, Fang Guo, Haitao Guo, Ju-Tao Guo, Troy O Harasym, Salam Kadhim, Steven G Kultgen, Amy C H Lee, Alice H L Li, Quanxin Long, Sara A Majeski, Richeng Mao, Kevin D McClintock, Stephen P Reid, Rene Rijnbrand, Nicholas M Snead, Holly M Micolochick Steuer, Kim Stever, Sunny Tang, Xiaohe Wang, Qiong Zhao, Michael J Sofia
AB-423 is a sulfamoylbenzamide (SBA) class of HBV capsid inhibitor in Phase 1 clinical trials. In cell culture models AB-423 showed potent inhibition of HBV replication (EC50 /EC90 = 0.08-0.27 μM/0.33-1.32 μM) with no significant cytotoxicity (CC50 >10 μM). Addition of 40% human serum resulted in a 5-fold increase in the EC50 values. AB-423 inhibited HBV genotypes A through D and nucleos/tide-resistant variants in vitro Treatment of HepDES19 cells with AB-423 resulted in capsid particles devoid of encapsidated pgRNA and rcDNA indicating it is a class II capsid inhibitor...
March 19, 2018: Antimicrobial Agents and Chemotherapy
G F Dall, S-T J Tsang, P J Gwynne, S P MacKenzie, A H R W Simpson, S J Breusch, M P Gallagher
Objectives: To evaluate putative anti-staphylococcal biofilm antibiotic combinations used in the management of periprosthetic joint infections (PJIs). Methods: Using the dissolvable bead biofilm assay, the minimum biofilm eradication concentration (MBEC) was determined for the most commonly used antimicrobial agents and combination regimens against staphylococcal PJIs. The established fractional inhibitory concentration (FIC) index was modified to create the fractional biofilm eradication concentration (FBEC) index to evaluate synergism or antagonism between antibiotics...
March 14, 2018: Journal of Antimicrobial Chemotherapy
Bing Liu, Chi Toan Le, Russell L Barrett, Daniel L Nickrent, Zhiduan Chen, Limin Lu, Romina Vidal-Russell
Coadaptation between mistletoes and birds captured the attention of Charles Darwin over 150 years ago, stimulating considerable scientific research. Here we used Loranthaceae, a speciose and ecologically important mistletoe family, to obtain new insights into the interrelationships among its hosts and dispersers. Phylogenetic analyses of Loranthaceae were based on a dataset of nuclear and chloroplast DNA sequences. Divergence time estimation, ancestral area reconstruction, and diversification rate analyses were employed to examine historical biogeography...
March 14, 2018: Molecular Phylogenetics and Evolution
Jae-Il Lee, Yun-Jung Choi, Hi-Jung Park, Kyeong Cheon Jung, Seong Hoe Park
Antibody formation against therapeutic agents, such as tumor necrosis factor inhibitors and Factor VIII, that leads to treatment failure has become a major challenge in the treatment of rheumatoid arthritis and hemophilia. It is well known that anti-CD154 antibodies have the highest potential to inhibit these types of adverse immune responses. Nevertheless, the formation of thromboemboli is the major hurdle in the clinical application of these anti-CD154 blocking antibodies. For this, we attempted to derive an idea as to how this major complication can be eliminated...
March 16, 2018: Biochemical and Biophysical Research Communications
Matthew J Bott, Jonathan Cools-Lartigue, Kay See Tan, Joseph Dycoco, Manjit S Bains, Robert J Downey, James Huang, James M Isbell, Daniela Molena, Bernard J Park, Valerie W Rusch, Smita Sihag, David R Jones, Prasad S Adusumilli
BACKGROUND: Surgeons are increasingly asked to operate on patients with residual disease after immunotherapy. The safety and utility of lung resection in this setting are unknown. METHODS: We performed a retrospective review of patients who underwent lung resection within 6 months of treatment with checkpoint blockade agents for metastatic or unresectable cancer. Survival was estimated from first resection using the Kaplan-Meier approach. RESULTS: Database query identified 19 patients who underwent 22 resections for suspected residual disease with therapeutic intent following immunotherapy between 2012 and 2016...
March 14, 2018: Annals of Thoracic Surgery
André Campaniço, Rui Moreira, Francisca Lopes
Tuberculosis (TB) remains a major health problem worldwide. The infectious agent, Mycobacterium tuberculosis, has a unique ability to survive within the host, alternating between active and latent disease states, and escaping the immune system defences. The extended duration of anti-TB regimens and the increasing prevalence of multidrug- (MDR) and extensively drug-resistant (XDR) M. tuberculosis strains have created an urgent need for new antibiotics active against drug-resistant organisms and that can shorten standard therapy...
March 9, 2018: European Journal of Medicinal Chemistry
Safi U Khan, Muhammad U Khan, Ali Raza Ghani, Ahmad N Lone, Adeel Arshad, Edo Kaluski
Current clinical practice prefers oral anticoagulation (OAC) plus dual antiplatelet therapy (DAPT) in atrial fibrillation (AF) after percutaneous coronary intervention (PCI). We conducted a meta-analysis to test the hypothesis that the superiority of OAC plus DAPT is mainly endorsed by observational studies (OSs); conversely, randomized clinical trials (RCTs) have suggested that OAC plus a single antiplatelet (SAP) agent is a safer and equally effective approach. Nine studies (4 RCTs and 5 OSs) were selected using MEDLINE, EMBASE, and CENTRAL (Inception, October 31, 2017)...
February 14, 2018: American Journal of Cardiology
Claudia Sinoo, Sylvia van der Pal, Olivier A Blanson Henkemans, Anouk Keizer, Bert P B Bierman, Rosemarijn Looije, Mark A Neerincx
OBJECTIVE: The PAL project develops a conversational agent with a physical (robot) and virtual (avatar) embodiment to support diabetes self-management of children ubiquitously. This paper assesses 1) the effect of perceived similarity between robot and avatar on children's' friendship towards the avatar, and 2) the effect of this friendship on usability of a self-management application containing the avatar (a) and children's motivation to play with it (b). METHODS: During a four-day diabetes camp in the Netherlands, 21 children participated in interactions with both agent embodiments...
February 21, 2018: Patient Education and Counseling
Cheleka A M Mpande, One B Dintwe, Munyaradzi Musvosvi, Simbarashe Mabwe, Nicole Bilek, Mark Hatherill, Elisa Nemes, Thomas J Scriba
Background: Maintenance of long-lasting immunity is thought to depend on stem cell memory T cells (TSCM ), which have superior self-renewing capacity, longevity and proliferative potential compared with central memory (TCM ) or effector (TEFF ) T cells. Our knowledge of TSCM derives primarily from studies of virus-specific CD8+ TSCM . We aimed to determine if infection with Mycobacterium tuberculosis ( M. tb ), the etiological agent of tuberculosis, generates antigen-specific CD4+ TSCM and to characterize their functional ontology...
2018: Frontiers in Immunology
Naira F Z Schneider, Claudia Cerella, Jin-Young Lee, Aloran Mazumder, Kyung Rok Kim, Annelise de Carvalho, Jennifer Munkert, Rodrigo M Pádua, Wolfgang Kreis, Kyu-Won Kim, Christo Christov, Mario Dicato, Hyun-Jung Kim, Byung Woo Han, Fernão C Braga, Cláudia M O Simões, Marc Diederich
Cardiac glycosides (CGs) are natural compounds used traditionally to treat congestive heart diseases. Recent investigations repositioned CGs as potential anticancer agents. To discover novel cytotoxic CG scaffolds, we selected the cardenolide glucoevatromonoside (GEV) out of 46 CGs for its low nanomolar anti-lung cancer activity. GEV presented reduced toxicity toward non-cancerous cell types (lung MRC-5 and PBMC) and high-affinity binding to the Na+ /K+ -ATPase α subunit, assessed by computational docking...
2018: Frontiers in Pharmacology
Yan Zhan, Yingliang Liu, Hongru Zu, Yanxian Guo, Shuangshuang Wu, Haiyao Yang, Zhiming Liu, Bingfu Lei, Jianle Zhuang, Xuejie Zhang, Di Huang, Chaofan Hu
Different from their bulk counterparts, plasmonic molybdenum oxide nanomaterials display superior optical and electronic properties, but unfortunately, phase-controlled synthesis of molybdenum oxide nanomaterials with multifunctional performances still remains a challenge. To actualize this, a surfactant-free solvothermal strategy was proposed to fabricate molybdenum oxide nanomaterials with a tunable phase. Encouragingly, the as-prepared molybdenum dioxide nanoparticles (MoO2 NPs) exhibit intense near-infrared (NIR) absorption attributed to the localized surface plasmon resonance (LSPR) effect, which results in their application as a surface enhanced Raman scattering (SERS) substrate to detect trace amounts of molecular species including Rhodamine 6G (R6G), crystal violet (CV), IR-780 iodide (IR780) and methylene blue (MB)...
March 15, 2018: Nanoscale
Ye-Jin Lee, Sung Koo Han, Ju Hee Park, Jung Kyu Lee, Deog Keom Kim, Hee Soon Chung, Eun Young Heo
Background/Aims: Patients with diabetes mellitus (DM) and tuberculosis (TB) have increased morbidity and a high risk of treatment failure or recurrence. It is important to manage both diseases simultaneously. Among anti-diabetic drugs, metformin inhibits intracellular growth of mycobacteria. Therefore, we examined the effects of metformin on TB treatment, especially in patients with DM. Methods: This retrospective cohort study included patients with culture-positive pulmonary TB diagnosed between 2011 and 2012...
March 16, 2018: Korean Journal of Internal Medicine
Joseph A McBride, Gregory M Gauthier, Bruce S Klein
This review article focuses on the mechanisms underlying temperature adaptation and virulence of the etiologic agents of blastomycosis, Blastomyces dermatitidis, Blastomyces gilchristii, and Blastomyces percursus. In response to temperature, Blastomyces undergoes a reversible morphologic switch between hyphae and yeast known as the phase transition. The conversion to yeast for Blastomyces and related thermally dimorphic fungi is essential for virulence. In the yeast phase, Blastomyces upregulates the essential virulence factor, BAD1, which promotes attachment to host cells, impairs activation of immune cells, and blunts cytokine release...
March 13, 2018: Virulence
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