2,643,624 results match your criteria agents

Platinum complexes inhibit HER-2 enriched and triple-negative breast cancer cells metabolism to suppress growth, stemness and migration by targeting PKM/LDHA and CCND1/BCL2/ATG3 signaling pathways.

Eur J Med Chem 2021 Jul 7;224:113689. Epub 2021 Jul 7.

Inner Mongolia University Research Center for Glycochemistry of Characteristic Medicinal Resources, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, PR China. Electronic address:

Triple-negative-breast cancer (TNBC) and HER-2 enriched positive aggressive types of breast cancer and are highly metastatic in nature. Anticancer agents those target TNBC and HER-2 enriched positive breast cancers are considered important in the field of breast cancer research. In search of the effective anticancer agents, we synthesized Pt(II) complexes to target these cancers. Read More

View Article and Full-Text PDF

Systemic therapy and prognosis of older patients with stage II/III breast cancer: A large-scale analysis of the Japanese Breast Cancer Registry.

Eur J Cancer 2021 Jul 19;154:157-166. Epub 2021 Jul 19.

Department of Breast Oncology, Aichi Cancer Center, Nagoya, Japan. Electronic address:

Aim: This study aimed at investigating the real-world prognostic impact of systemic treatment in older patients with stage II/III breast cancer (BC).

Methods: This retrospective cohort study included patients with stage II/III primary BC, aged ≥55 years, and registered in the Japanese Breast Cancer Registry from 2004 to 2011. The clinicopathological characteristics, treatments, and prognosis of patients aged ≥75 years (older) were compared to those of younger patients. Read More

View Article and Full-Text PDF

Effects of various alcohol sacrificial agents on hydrogen evolution based on [email protected] nanomaterials and its mechanism.

Chemosphere 2021 Jul 13;286(Pt 1):131558. Epub 2021 Jul 13.

College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China. Electronic address:

Visible light induced photocatalysis converted solar energy to chemical energy in the form of hydrogen. g-CN modified by thermal oxidation etching, doped S, and nonprecious metal cocatalyst CoS ([email protected]) were used for photocatalytic hydrogen production. And then the charge transfer behavior and mechanism of various alcohol sacrificial agents on hydrogen evolution was analyzed by optical characterization, impedance analysis, Mott-Schottky, and photocurrent tests. Read More

View Article and Full-Text PDF

Evaluation of commercial zerovalent iron sources in combination with solar energy to remove microcontaminants from natural water at circumneutral pH.

Chemosphere 2021 Jul 15;286(Pt 1):131557. Epub 2021 Jul 15.

Plataforma Solar de Almería-CIEMAT, Ctra Senés km 4, 04200, Tabernas, Almería, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, 04120, Almería, Spain.

Solar zerovalent iron (ZVI) was studied at circumneutral pH in combination with hydrogen peroxide and persulfate for removal of imidacloprid as a model contaminant in natural water. Three commercial ZVI sources, steel wool (ZVI-SW) and two iron micro-powders (ZVI-MS and ZVI-S) were independently evaluated. First, different ZVI corrosion conditions were tested in contact with air, exposed to natural solar radiation and with addition of oxidants, such as HO and SO, demonstrating the importance of released iron. Read More

View Article and Full-Text PDF

Intracellular Delivery of Oxaliplatin Conjugate via Cell Penetrating Peptide for the Treatment of Colorectal Carcinoma in vitro and in vivo.

Int J Pharm 2021 Jul 19:120904. Epub 2021 Jul 19.

Department of Electronic Materials and Devices Engineering, Soonchunhyang University, Asan 31538, Republic of Korea; Department of Chemical Engineering, Soonchunhyang University, Asan 31538, Republic of Korea. Electronic address:

Pt-based drugs are one of the main active agents in colorectal cancer treatment. However, drug resistance and dose-dependent side effects are the main barriers that restrict their clinical applications. As an alternative approach to these issues, we designed and synthesized a cell penetrating peptide (CPP) octaarginine-oxaliplatin conjugate that quickly and successfully delivered oxaliplatin into colon cancer cells. Read More

View Article and Full-Text PDF


Int J Pharm 2021 Jul 19:120905. Epub 2021 Jul 19.

CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal; Institute of Interdisciplinary Research (III), University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal. Electronic address:

Cancer is one of the most prevalent and deadly diseases in the world, to which conventional treatment options, such as chemotherapy and radiotherapy, have been applied to overcome the disease or used in a palliative manner to enhance the quality of life of the patient. However, there is an urgent need to develop new preventive and treatment strategies to overcome the limitations of the commonly used approaches. The field of cancer nanomedicine, and more recently the field of nanotheranostics, where imaging and therapeutic agents are combined in a single platform, provide new opportunities for the treatment and the diagnosis of cancer. Read More

View Article and Full-Text PDF

The complex interplay of gut microbiota with the five most common cancer types: From carcinogenesis to therapeutics to prognosis.

Crit Rev Oncol Hematol 2021 Jul 19:103429. Epub 2021 Jul 19.

NICM Health Research Institute, Western Sydney University, Penrith, NSW 2747, Australia. Electronic address:

The association between human gut microbiota and cancers has been an evolving field of biomedical research in recent years. The gut microbiota is composed of the microorganisms residing in the gastrointestinal system that interact with the host to regulate behaviours and biochemical processes within the gut. This symbiotic physiological interaction between the gut and the microbiota plays a significant role in the modulation of gut homeostasis, in which perturbations to the microbiota, also known as dysbiosis can lead to the onset of diseases, including cancer. Read More

View Article and Full-Text PDF

Durability of rilpivirine- versus integrase inhibitor-based regimens in a large cohort of naïve HIV-infected patients starting antiretroviral therapy.

Int J Antimicrob Agents 2021 Jul 19:106406. Epub 2021 Jul 19.

Clinic of Infectious Diseases, S. Paolo Hospital, University of Milan, Milano, Italy.

Objective: Comparisons between rilpivirine (RPV) and integrase strand transfer inhibitors (INSTIs) in antiretroviral therapy (ART)-naïve HIV-infected individuals are currently lacking. Aim of the study was to compare, in an observational cohort setting, the durability of treatment of RPV- and INSTI-based first-line regimens.

Methods: Patients who started first-line ARTs based on RPV or on INSTIs, with HIV-RNA <100,000 copies/mL, CD4 cells count >200 cells/μL, were included. Read More

View Article and Full-Text PDF

Molecular and epidemiological investigation of a colistin-resistant OXA-23/NDM-1-producing Acinetobacter baumannii outbreak in Southwest Indian Ocean.

Int J Antimicrob Agents 2021 Jul 19:106402. Epub 2021 Jul 19.

Centre National de Référence de la Résistance aux Antibiotiques, Centre Hospitalier Universitaire de Besançon, Besançon, France.; Laboratoire de Bactériologie, UMR CNRS 6249 Chrono-Environnement, Faculté de Médecine-Pharmacie, Université Bourgogne Franche-Comté, Besançon, France.. Electronic address:

Dual resistance to colistin and carbapenems is a milestone reached by certain extensively-drug resistant (XDR) Gram-negative bacteria. The present study describes the first outbreak of XDR colistin- and carbapenem-resistant OXA-23/NDM-1-producing Acinetobacter baumannii (CCRAB) in European overseas territory of Reunion Island (France, Indian Ocean). Between April 2019 and June 2020, 13 patients admitted to the University Hospital of Reunion Island were involved in the outbreak, of whom 8 were infected and 6 died. Read More

View Article and Full-Text PDF

Bacteriophage therapy: Recent developments and applications of a renaissant weapon.

Res Microbiol 2021 Jul 19:103863. Epub 2021 Jul 19.

Department of Microbiology, Faculty of Life Sciences, JSS Academy of Higher Education & Research, Sri Shivarathreeshwara Nagara, Mysuru, Karnataka, 570015, India. Electronic address:

Antimicrobial resistance is a global health problem and one of the leading concerns in healthcare sector. Bacteriophages are antibacterial agents ubiquitous in nature. With increase in antibiotic resistance, use of bacteriophages as therapeutics has become resurgent in recent times. Read More

View Article and Full-Text PDF

Revealing new therapeutic opportunities in hypertension through network-driven integrative genetic analysis and drug target prediction approach.

Gene 2021 Jul 19:145856. Epub 2021 Jul 19.

Translational Research Lab, Department of Biotechnology, Jamia Millia Islamia, New Delhi 110025, India. Electronic address:

Epidemiological studies have established that untreated hypertension (HTN) is a major independent risk factor for developing cardiovascular diseases (CVD), stroke, renal failure, and other conditions. Several important studies have been published to prevent and manage HTN; however, antihypertensive agents' optimal choice remains controversial. Therefore, the present study is undertaken to update our knowledge in the primary treatment of HTN, specifically in the setting of other three important diseases. Read More

View Article and Full-Text PDF

Herb-drug interactions and toxicity: Underscoring potential mechanisms and forecasting clinically relevant interactions induced by common phytoconstituents via data mining and computational approaches.

Food Chem Toxicol 2021 Jul 19:112432. Epub 2021 Jul 19.

Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius. Electronic address:

Herbals in the form of medicine are employed extensively around the world. Herbal and conventional medicine combination is a potentially dangerous practice mainly in comorbid, hepato insufficient and frail patients leading to perilous herb-drug interactions (HDI) and toxicity. This study features potential HDI of 15 globally famous plant species through data mining and computational methods. Read More

View Article and Full-Text PDF

A dynamic susceptibility contrast MRI digital reference object for testing software with leakage correction: Effect of background simulation.

Med Phys 2021 Jul 22. Epub 2021 Jul 22.

Departments of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, 77030, USA.

Purpose: Dynamic susceptibility contrast (DSC)-MRI is a perfusion imaging technique from which useful quantitative imaging biomarkers can be derived. Relative cerebral blood volume (rCBV) is such a biomarker commonly used for evaluating brain tumors. To account for the extravasation of contrast agents in tumors, post-processing leakage correction is often applied to improve rCBV accuracy. Read More

View Article and Full-Text PDF

Clinical safety evaluation of contrast agents based on real-world evidence.

J Clin Pharm Ther 2021 Jul 22. Epub 2021 Jul 22.

Department of Pharmacy, Wenling Hospital of Traditional Chinese Medicine Affiliated to Zhejiang University of Traditional Chinese Medicine, Wenling, China.

What Is Known And Objective: This study was aimed at comparing the adverse drug reactions (ADRs) arising from the use of iodinated contrast medium (ICM) and gadolinium-based contrast media (GBCM), and to provide a basis for the clinical selection of contrast media.

Methods: Retrospective data for ADR cases occurring from the use of ICM or GBCM during enhanced scanning in computed tomography and magnetic resonance imaging were collected between June/2013 and May/2020 from Wenling Hospital of Traditional Chinese Medicine. Chi-square tests were performed based on the characteristics of patients and the classification of contrast medium. Read More

View Article and Full-Text PDF

Affinity monolith chromatography: a review of general principles and recent developments.

Electrophoresis 2021 Jul 22. Epub 2021 Jul 22.

Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.

Affinity monolith chromatography (AMC) is a liquid chromatographic technique that utilizes a monolithic support with a biological ligand or related binding agent to isolate, enrich, or detect a target analyte in a complex matrix. The target-specific interaction exhibited by the binding agents makes AMC attractive for the separation or detection of a wide range of compounds. This article will review the basic principles of AMC and recent developments in this field. Read More

View Article and Full-Text PDF

Donor orientation and service quality: Key factors in active blood donors' satisfaction and loyalty.

PLoS One 2021 22;16(7):e0255112. Epub 2021 Jul 22.

Department of Business Economics, Faculty of Legal and Business Sciences, Universidad Rey Juan Carlos, Madrid, Spain.

Faced with the increasing demand for blood and greater restrictions on ensuring the safety of transfusions, voluntary donation is currently the only and best alternative for the health system to have a sustainable and safe blood supply. In this context, one of the primary strategies of blood transfusion centres is to increase the satisfaction of their active donors so that they maintain their intention to donate in the future and, in turn, make the necessary recommendations so that third parties can become new donors. That is why this paper raises a question for research concerning, what should the premises be to guide the management of blood transfusion centres to maintain and even increase the satisfaction and loyalty of their active donors? In order to respond to this issue, a change in paradigm is proposed based on a management model supported by donor orientation and service quality as basic pillars, as well as on the development of a number of key social capital resources that explain this orientation toward the donor. Read More

View Article and Full-Text PDF

Association between ANGPTL3, 4, and 8 and lipid and glucose metabolism markers in patients with diabetes.

PLoS One 2021 22;16(7):e0255147. Epub 2021 Jul 22.

Department of Endocrinology and Metabolism, Yokohama City University School of Medicine, Yokohama, Japan.

Lipid management, especially with respect to triglyceride (TG) metabolism, in patients with diabetes is not sufficient with current therapeutic agents, and new approaches for improvement are needed. Members of the angiopoietin-like protein (ANGPTL) family, specifically ANGPTL3, 4, and 8, have been reported as factors that inhibit lipoprotein lipase (LPL) activity and affect TGs. The present study investigated the association between lipid and glucose metabolism markers and the mechanism by which these proteins affect lipid metabolism. Read More

View Article and Full-Text PDF

A highly potent and safe pyrrolopyridine-based allosteric HIV-1 integrase inhibitor targeting host LEDGF/p75-integrase interaction site.

PLoS Pathog 2021 Jul 22;17(7):e1009671. Epub 2021 Jul 22.

Department of Pediatrics, School of Medicine, Emory University, Atlanta, Georgia, United States of America.

Allosteric integrase inhibitors (ALLINIs) are a class of experimental anti-HIV agents that target the noncatalytic sites of the viral integrase (IN) and interfere with the IN-viral RNA interaction during viral maturation. Here, we report a highly potent and safe pyrrolopyridine-based ALLINI, STP0404, displaying picomolar IC50 in human PBMCs with a >24,000 therapeutic index against HIV-1. X-ray structural and biochemical analyses revealed that STP0404 binds to the host LEDGF/p75 protein binding pocket of the IN dimer, which induces aberrant IN oligomerization and blocks the IN-RNA interaction. Read More

View Article and Full-Text PDF

Genotypic and phenotypic prevalence of Nocardia species in Iran: First systematic review and meta-analysis of data accumulated over years 1992-2021.

PLoS One 2021 22;16(7):e0254840. Epub 2021 Jul 22.

Pain Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

Background: Nocardia species belong to the aerobic actinomycetes group of bacteria which are gram-positive and partially acid-fast Bacilli. These bacteria may sometimes be associated with nosocomial infections. Nocardia diseases are not required to be reported to public health authorities in Iran. Read More

View Article and Full-Text PDF

Dispersive effects and focused biodistribution of recombinant human hyaluronidase PH20: A locally acting and transiently active permeation enhancer.

PLoS One 2021 22;16(7):e0254765. Epub 2021 Jul 22.

Halozyme Therapeutics, Inc., San Diego, CA, United States of America.

Background: Recombinant human hyaluronidase PH20 (rHuPH20) facilitates the dispersion and absorption of subcutaneously administered therapeutic agents. This study aimed to characterize the transient, local action of rHuPH20 in the subcutaneous (SC) space using focused biodistribution and dye dispersion studies conducted in mice.

Materials And Methods: To evaluate the biodistribution of rHuPH20, mice were intradermally administered rHuPH20 (80 U). Read More

View Article and Full-Text PDF

In vivo recellularization of xenogeneic vascular grafts decellularized with high hydrostatic pressure method in a porcine carotid arterial interpose model.

PLoS One 2021 22;16(7):e0254160. Epub 2021 Jul 22.

Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

Autologous vascular grafts are widely used in revascularization surgeries for small caliber targets. However, the availability of autologous conduits might be limited due to prior surgeries or the quality of vessels. Xenogeneic decellularized vascular grafts from animals can potentially be a substitute of autologous vascular grafts. Read More

View Article and Full-Text PDF

Prophylaxis for Heterotopic Ossification Following Distal Biceps Tendon Repair.

Orthopedics 2021 Jul-Aug;44(4):e588-e592. Epub 2021 Jul 1.

Heterotopic ossification (HO) is a possible complication of distal biceps tendon repair (DBTR). Several agents can prevent HO formation, although relatively few studies have investigated prophylaxis specifically after DBTR. The purposes of this study were to survey members of the American Shoulder and Elbow Surgeons (ASES) to determine (1) what percentage use HO prophylaxis after DBTR; (2) type, dosage, and duration of prophylaxis used; and (3) use of single-incision or double-incision surgical technique. Read More

View Article and Full-Text PDF

Risks for Recurrent Vulvovaginal Candidiasis Caused by Non-Albicans Versus .

J Womens Health (Larchmt) 2021 Jul 22. Epub 2021 Jul 22.

Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio, USA.

Vulvovaginal candidiasis (VVC) is the second most common vulvovaginitis (VV). About 20% of women will experience recurrent infections in their lifetime with non- (NAC) species being one of the causative agents. Although studies have looked at risk factors for recurrent VVC they are limited in scope. Read More

View Article and Full-Text PDF

Design, Synthesis, and Biological Evaluation of Organic Nitrite (NO) Donors as Potential Anticerebral Ischemia Agents.

J Med Chem 2021 Jul 22. Epub 2021 Jul 22.

State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, P.R. China.

The treatment of ischemic stroke (IS) remains a big challenge in clinics, and it is urgently needed to develop novel, safe, and effective medicines against IS. Here, we report the design, synthesis, and biological evaluation of organic NO donors as potential agents for the treatment of IS. The representative compound was able to slowly generate low concentrations of NO by reaction with a thiol-containing nucleophile, and the NO was selectively converted into NO under ischemic/hypoxia conditions to protect primary rat neurons from oxygen-glucose deprivation and recovery (OGD/R)-induced cytotoxicity by enhancing the Nrf2 signaling and activating the NO/cGMP/PKG pathway. Read More

View Article and Full-Text PDF

Self-Immolative System for Disclosure of Reactive Electrophilic Alkylating Agents: Understanding the Role of the Reporter Group.

J Org Chem 2021 Jul 22. Epub 2021 Jul 22.

Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K.

The development of stable, efficient chemoselective self-immolative systems, for use in applications such as sensors, requires the optimization of the reactivity and degradation characteristics of the self-immolative unit. In this paper, we describe the effect that the structure of the reporter group has upon the self-immolative efficacy of a prototype system designed for the disclosure of electrophilic alkylating agents. The amine of the reporter group (a nitroaniline unit) was a constituent part of a carbamate that functioned as the self-immolative unit. Read More

View Article and Full-Text PDF

Highly Stable Silica-Coated Bismuth Nanoparticles Deliver Tumor Microenvironment-Responsive Prodrugs to Enhance Tumor-Specific Photoradiotherapy.

J Am Chem Soc 2021 Jul 22. Epub 2021 Jul 22.

CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100049, P. R. China.

Radiosensitizers are agents capable of amplifying injury to tumor tissues by enhancing DNA damage and fortifying production of radical oxygen species (ROS). The use of such radiosensitizers in the clinic, however, remains limited by an insufficient ability to differentiate between cancer and normal cells and by the presence of a reversible glutathione system that can diminish the amount of ROS generated. Here, to address these limitations, we design an HO-responsive prodrug which can be premixed with lauric acid (melting point ∼43 °C) and loaded around the surface of silica-coated bismuth nanoparticles (BSNPs) for cancer-specific photoradiotherapy. Read More

View Article and Full-Text PDF

Elucidating the Role of Halides and Iron during Radiolysis-Driven Oxidative Etching of Gold Nanocrystals Using Liquid Cell Transmission Electron Microscopy and Pulse Radiolysis.

J Am Chem Soc 2021 Jul 22. Epub 2021 Jul 22.

Department of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States.

Graphene liquid cell transmission electron microscopy (TEM) has enabled the observation of a variety of nanoscale transformations. Yet understanding the chemistry of the liquid cell solution and its impact on the observed transformations remains an important step toward translating insights from liquid cell TEM to benchtop chemistry. Gold nanocrystal etching can be used as a model system to probe the reactivity of the solution. Read More

View Article and Full-Text PDF

Biochemical Approaches to Probe the Role of the Auxiliary Iron-Sulfur Cluster of Lipoyl Synthase from Mycobacterium Tuberculosis.

Methods Mol Biol 2021 ;2353:307-332

Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, USA.

Lipoic acid is an essential sulfur-containing cofactor used by several multienzyme complexes involved in energy metabolism and the breakdown of certain amino acids. It is composed of n-octanoic acid with sulfur atoms appended at C6 and C8. Lipoic acid is biosynthesized de novo in its cofactor form, in which it is covalently bound in an amide linkage to a target lysyl residue on a lipoyl carrier protein (LCP). Read More

View Article and Full-Text PDF
January 2021

A Fast and Ratiometric Method for Quantification of Cysteine-Bound Persulfides Based on Alkylation and Gel-Shift Assays.

Methods Mol Biol 2021 ;2353:191-205

Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France.

Cysteine-bound persulfides (Cys-SSH) in proteins are sulfur carrier intermediates in the synthesis of essential cofactors such as iron-sulfur clusters, molybdenum cofactor, vitamin (thiamine), and thionucleosides (thiolated tRNA). Protein-bound persulfides are also used for signaling purposes as a carrier of the "HS" signal. Several methods have been developed to detect and quantify cysteine-bound persulfides in protein and monitor their exchange. Read More

View Article and Full-Text PDF
January 2021

Therapeutic Effects of Ba-Duan-Jin versus Pregabalin for Fibromyalgia Treatment: Protocol for a Randomized Controlled Trial.

Rheumatol Ther 2021 Jul 22. Epub 2021 Jul 22.

Department of Rheumatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.

Introduction: Fibromyalgia is characterized by multi-focal pain and is associated with fatigue, unrefreshing sleep and psychological impairment. Pregabalin is one of the most frequently used agents in fibromyalgia treatment. However, it has failed to demonstrate benefit over placebo for reducing fatigue and psychological impairment, and may cause adverse effects (e. Read More

View Article and Full-Text PDF