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https://www.readbyqxmd.com/read/28743091/performance-comparison-of-two-herbal-and-industrial-medicines-using-nanoparticles-with-a-starch-cellulose-shell-and-alginate-core-for-drug-delivery-in-vitro-studies
#1
Akbar Esmaeili, Sahar Behzadi
In this study, the performance of two kinds of industrial and herbal drugs encapsulated in nanoparticles with a shell of starch and cellulose and an alginate core were examined as a new technique for nanoparticle drug delivery. The test method involved creating a suspension of starch and alginate, which was then dried, mixed with cellulose, and heated to form core-shell nanoparticles. The industrial drug calcitonin and an extract of the herb Amaranthus retroflexcus L. were added separately and in combination to the nanoparticles, and the performance of each configuration was evaluated...
July 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28743090/nir-and-uv-responsive-degradable-hyaluronic-acid-nanogels-for-cd44-targeted-and-remotely-triggered-intracellular-doxorubicin-delivery
#2
Chunfeng Hang, Yan Zou, Yinan Zhong, Zhiyuan Zhong, Fenghua Meng
Hyaluronic acid (HA) is an endogenous polysaccharide that shows intrinsic targetability to CD44+ cancer cells. Here, we developed NIR and UV-responsive degradable nanogels from hyaluronic acid-g-7-N,N-diethylamino-4-hydroxymethylcoumarin (HA-CM) for CD44 targeted and remotely controlled intracellular doxorubicin (DOX) delivery. Nanometer-sized HA-CM nanogels could readily load DOX, and both NIR and UV irradiation could significantly enhance DOX release from the nanogels, resulting from light-triggered cleavage of urethane bonds that connect CM to HA...
July 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28743089/understanding-the-interaction-of-concanavalin-a-with-mannosyl-glycoliposomes-a-surface-plasmon-resonance-and-fluorescence-study
#3
Catalina Sandoval-Altamirano, Susana A Sanchez, Nancy F Ferreyra, German Gunther
The specificity of carbohydrate-protein interaction is a key factor in many biological processes and it is the foundation of technologies using glycoliposomes in drug delivery. The incorporation of glycolipids in vesicles is expected to increase their specificity toward particular targets such as lectins; however, the degree of exposure of the carbohydrate moiety at the liposome surface is a crucial parameter to be considered in the interaction. Herein we report the synthesis of mannose derivatives with one or two hydrophobic chains of different length, designed with the purpose of modifying the degree of exposure of the mannose when they were incorporated into liposomes...
July 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28742829/community-burden-of-undiagnosed-hiv-infection-among-adolescents-in-zimbabwe-following-primary-healthcare-based-provider-initiated-hiv-testing-and-counselling-a-cross-sectional-survey
#4
Victoria Simms, Ethel Dauya, Subathira Dakshina, Tsitsi Bandason, Grace McHugh, Shungu Munyati, Prosper Chonzi, Katharina Kranzer, Getrude Ncube, Collen Masimirembwa, Roslyn Thelingwani, Tsitsi Apollo, Richard Hayes, Helen A Weiss, Rashida A Ferrand
BACKGROUND: Children living with HIV who are not diagnosed in infancy often remain undiagnosed until they present with advanced disease. Provider-initiated testing and counselling (PITC) in health facilities is recommended for high-HIV-prevalence settings, but it is unclear whether this approach is sufficient to achieve universal coverage of HIV testing. We aimed to investigate the change in community burden of undiagnosed HIV infection among older children and adolescents following implementation of PITC in Harare, Zimbabwe...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28742810/effect-of-calcium-electroporation-in-combination-with-metformin-in-vivo-and-correlation-between-viability-and-intracellular-atp-level-after-calcium-electroporation-in-vitro
#5
Stine Krog Frandsen, Julie Gehl
BACKGROUND: Calcium electroporation is a new experimental anti-cancer treatment where calcium is internalized into cells by application of short, high voltage pulses. Calcium electroporation has been shown to induce tumor necrosis associated with ATP depletion while the effect on normal fibroblasts was limited when investigated in a 3D in vitro spheroid model. We aimed to investigate the effect of calcium electroporation in combination with metformin, a drug that affects intracellular ATP level...
2017: PloS One
https://www.readbyqxmd.com/read/28742547/celiprolol-a-unique-selective-adrenoceptor-modulator
#6
James J Nawarskas, Angela Cheng-Lai, William H Frishman
Celiprolol is a β-blocker with a unique pharmacologic profile: it is a β1-andrenoceptor antagonist with partial β2 agonist activity. Given this combination of effects, celiprolol may be better described as a elective adrenoreceptor modulator. It has antihypertensive and antianginal properties and is indicated for those uses in various countries around the world. In the United States, however, the proposed indication for this drug will be for the treatment of vascular type Ehlers-Danlos syndrome, a rare connective tissue isorder haracterized by fragile arterial structure and an increased risk of life-threatening vascular complications...
July 20, 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28742385/sequential-therapy-of-breast-cancer-cell-lines-with-vitamin-c-and-quercetin-improves-the-efficacy-of-chemotherapeutic-drugs
#7
Fatemeh Ramezani, Nasser Samadi, Zohreh Mostafavi-Pour
OBJECTIVE: Prevention by antioxidant agents including vitamin C (VC) and quercetin (QU), which are nontoxic, cost effective, and physiologically bioavailable, is a promising approach in breast cancer handling. The aim of this work is to investigate the influence of VC+QU on cytotoxicity profile of doxorubicin (DOX) plus paclitaxel (PAC) in breast cancer cells. METHODS: The effect of each drug on its own or in combination was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
July 25, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28742190/the-research-on-the-influences-of-hyperthermal-perfusion-chemotherapy-combined-with-immunologic-therapy-on-the-immunologic-function-and-levels-of-circulating-tumor-cells-of-the-advanced-colorectal-cancer-patients-with-liver-metastasis
#8
J-J Sun, G-L Fan, X-G Wang, K Xu
OBJECTIVE: To investigated the influence of hyperthermal perfusion chemotherapy combined with immunologic therapy on the immunologic function and levels of circulating tumor cells of the advanced colorectal cancer patients with liver metastasis. PATIENTS AND METHODS: We enrolled 98 advanced colorectal cancer patients with liver metastasis that were admitted to this hospital for treatment and were randomly divided into two groups, the observation group (n = 49) and the control group (n = 49)...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28742113/addition-of-17-allylamino-17-demethoxygeldanamycin-to-a-suboptimal-caspofungin-treatment-regimen-in-neutropenic-rats-with-invasive-pulmonary-aspergillosis-delays-the-time-to-death-but-does-not-enhance-the-overall-therapeutic-efficacy
#9
Jeannine M Refos, Alieke G Vonk, Marian T Ten Kate, Kimberly Eadie, Henri A Verbrugh, Irma A J M Bakker-Woudenberg, Wendy W J van de Sande
Caspofungin (CAS) which is used as salvage therapy in patients with invasive pulmonary aspergillosis (IPA) inhibits the 1,3-β-D-glucan synthesis in Aspergillus fumigatus. Inhibiting 1,3-β-D-glucan synthesis induces a stress response and in an invertebrate model it was demonstrated that inhibiting this response with geldamycin enhanced the therapeutic efficacy of CAS. Since geldamycin itself is toxic to mammalians, the therapeutic efficacy of combining geldamycin with CAS was not studied in rodent models. Therefore in this study we investigated if the geldamycin derivate 17-(allylamino)-17-demethoxygeldanamycin (17-AAG) was able to enhance the therapeutic efficacy of CAS in vitro and in our IPA model in transiently neutropenic rats...
2017: PloS One
https://www.readbyqxmd.com/read/28742023/genome-wide-identification-of-lineage-and-locus-specific-variation-associated-with-pneumococcal-carriage-duration
#10
John A Lees, Nicholas J Croucher, David Goldblatt, François Nosten, Julian Parkhill, Claudia Turner, Paul Turner, Stephen D Bentley
Streptococcus pneumoniae is a leading cause of invasive disease in infants, especially in low-income settings. Asymptomatic carriage in the nasopharynx is a prerequisite for disease, but variability in its duration is currently only understood at the serotype level. Here we developed a model to calculate the duration of carriage episodes from longitudinal swab data, and combined these results with whole genome sequence data. We estimated that pneumococcal genomic variation accounted for 63% of the phenotype variation, whereas the host traits considered here (age and previous carriage) accounted for less than 5%...
July 25, 2017: ELife
https://www.readbyqxmd.com/read/28741967/iglarlixi-a-titratable-once-daily-fixed-ratio-combination-of-basal-insulin-and-lixisenatide-for-intensifying-type-2-diabetes-management-for-patients-inadequately-controlled-on-basal-insulin-with-or-without-oral-agents
#11
Neil Skolnik, Renell S Dupree, Eric L Johnson
BACKGROUND: Achieving and maintaining glycemic control is important for people with type 2 diabetes (T2D) in order to reduce disease-related complications and mortality; however, about half of US patients fail to meet glycemic targets. iGlarLixi, a titratable fixed-ratio combination of insulin glargine 100 U/mL (iGlar) and lixisenatide for once-daily administration, was recently approved by the US Food and Drug Administration for use in adults with T2D inadequately controlled on basal insulin (<60 U daily) or lixisenatide...
July 25, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28741923/codelivery-of-trichosanthin-and-albendazole-by-nano-self-assembly-for-overcoming-tumor-multidrug-resistance-and-metastasis
#12
Yisi Tang, Jianming Liang, Aihua Wu, Yingzhi Chen, Pengfei Zhao, Tingting Lin, Meng Zhang, Qin Xu, Jianxin Wang, Yongzhuo Huang
Multidrug resistance (MDR) and metastasis are the major obstacles in cancer chemotherapy. Nanotechnology-based combination therapy is a useful strategy. Recently, the combination of biologics and small drugs has attracted much attention in cancer therapy. Yet, the treatment outcomes are often compromised by the different pharmacokinetics profiles of the co-administered drugs, thus leading to inconsistent drug uptake and suboptimal drug combination at the tumor sites. Nanotechnology-based codelivery offers a promising method to address this problem, which is well demonstrated in the use of small drugs combination...
July 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28741634/mitochondria-targeting-near-infrared-light-triggered-thermosensitive-liposomes-for-localized-photothermal-and-photodynamic-ablation-of-tumors-combined-with-chemotherapy
#13
Caixia Yue, Yuming Yang, Jie Song, Gabriel Alfranca, Chunlei Zhang, Qian Zhang, Ting Yin, Fei Pan, Jesús M de la Fuente, Daxiang Cui
Lonidamine, an anticancer drug that acts on mitochondria, has poor water solubility. Mitochondria are the primary source of cellular reactive oxygen species (ROS), which are necessary for photodynamic therapy. Hence, a mitochondria-targeting drug delivery system loaded with Lonidamine and a ROS-produced photosensitizer could improve the bioavailability of Lonidamine and maximize photodynamic therapeutic efficiency. Here we report, for the first time, new IR-780 and Lonidamine encapsulated mitochondria-targeting thermosensitive liposomes (IL-TTSL)...
July 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28741504/eradicating-quiescent-tumor-cells-by-targeting-mitochondrial-bioenergetics
#14
REVIEW
Xiaonan Zhang, Angelo De Milito, Asuman Demiroglu-Zergeroglu, Joachim Gullbo, Padraig D'Arcy, Stig Linder
The presence of quiescent cell populations in solid tumors represents a major challenge for disease eradication. Such cells are generally present in poorly vascularized tumor areas, show limited sensitivity to traditional chemotherapeutical drugs, and tend to resume proliferation, resulting in tumor reseeding and growth. There is growing recognition of the importance of developing therapies that target these quiescent cell populations to achieve long-lasting remission. Recent studies have shown that the combination of hypoxia and reduced nutrient availability in poorly vascularized areas results in limited tumor metabolic plasticity coupled with an increased sensitivity to perturbations in mitochondrial flux...
November 2016: Trends in Cancer
https://www.readbyqxmd.com/read/28741467/status-quo-in-antibody-drug-conjugates-can-glyco-enzymes-solve-the-current-challenges
#15
Florentina Kubizek, Britta Eggenreich, Oliver Spadiut
Over the last years, a novel class of anti-cancer drugs named antibody-drug conjugates (ADCs) has been developed. Due to their limited off-target toxicity but highly potent cytotoxicity at tumor sites, ADCs have proven to be a good alternative to ordinary cancer treatment, such as chemotherapy or combination therapy. Numerous enhancements in antibody-drug engineering led to highly potent tumor targeting drugs with a wide therapeutic window. Two ADCs (Brentuximab vedotin and Trastuzumab emtansine) are already on the market and many others in clinical trials...
July 24, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28741456/effects-of-oral-and-non-insulin-injectable-antidiabetic-treatment-in-hypertension-a-systematic-review
#16
Vasiliki Katsi, Georgios Georgiopoulos, Georgia Vogiatzi, Dimitrios Oikonomou, Maria Megapanou, John Skoumas, Charalampos Vlachopoulos, Petros Nihoyannopoulos, Dimitris Tousoulis
BACKGROUND: Diabetes mellitus type 2 (T2DM) often co-exists with hypertension, and this aggregation of co-morbidities amplifies the risk for future cardiovascular events. Therefore, it appears crucial to understand the essence of choosing oral and non-insulin injectable anti-diabetic drugs (ADs) with a favorable hemodynamic impact that could partially attenuate the increased baseline cardiovascular risk. OBJECTIVE: We sought to evaluate the effect of ADs on blood pressure (BP) indices and to assess the potential role of certain ADs towards hypertension treatment...
May 19, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28741299/a-review-of-moxifloxacin-for-the-treatment-of-drug-susceptible-tuberculosis
#17
REVIEW
Anushka Naidoo, Kogieleum Naidoo, Helen McIlleron, Sabiha Essack, Nesri Padayatchi
Moxifloxacin, an 8-methoxy quinolone, is an important drug in the treatment of multidrug-resistant tuberculosis and is being investigated in novel drug regimens with pretomanid, bedaquiline, and pyrazinamide, or rifapentine, for the treatment of drug-susceptible tuberculosis. Early results of these studies are promising. Although current evidence does not support the use of moxifloxacin in treatment-shortening regimens for drug-susceptible tuberculosis, it may be recommended in patients unable to tolerate standard first-line drug regimens or for isoniazid monoresistance...
July 24, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28741274/cyclin-dependent-kinase-4-6-inhibitors-in-breast-cancer-palbociclib-ribociclib-and-abemaciclib
#18
REVIEW
Dorota Kwapisz
PURPOSE: The cyclin D-cyclin dependent kinase (CDK) 4/6-inhibitor of CDK4 (INK4)-retinoblastoma (Rb) pathway plays a crucial role in cell cycle progression and its dysregulation is an important contributor to endocrine therapy resistance. CDK4/6 inhibitors trigger cell cycle arrest in Rb protein (pRb)-competent cells. Recent years have seen the development of selective CDK4/6 inhibitors, which have delivered promising results of efficacy and manageable safety profiles. The main objective of this review is to discuss preclinical and clinical data to date, and ongoing clinical trials with palbociclib, ribociclib, and abemaciclib in breast cancer...
July 24, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28741243/the-pharmacogenomic-and-metabolomic-predictors-of-ace-inhibitor-and-angiotensin-ii-receptor-blocker-effectiveness-and-safety
#19
Hania K Flaten, Andrew A Monte
Hypertension (HTN) is the most common chronic disease in the USA. Hypertensive patients frequently require repeat primary care visits to find an effective drug or drug combination to control their disease. Currently, patients are prescribed drugs for HTN based on race, age, and comorbidities and although the current guidelines are reasonable starting points for prescribing, 50% of hypertensive patients still fail to achieve target blood pressures. Despite numerous strategies to improve compliance, drug effectiveness, and optimization of initial drug choice, effectiveness has remained largely unchanged over the past two decades...
July 24, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28741229/inhaled-antimicrobials-for-ventilator-associated-pneumonia-practical-aspects
#20
Garyphallia Poulakou, Dimitrios K Matthaiou, David P Nicolau, Georgios Siakallis, George Dimopoulos
Positive experience with inhaled antibiotics in pulmonary infections of patients with cystic fibrosis has paved the way for their utilization in mechanically ventilated, critically ill patients with lower respiratory tract infections. A successful antibiotic delivery depends upon the size of the generated particle and the elimination of drug impaction in the large airways and the ventilator circuit. Generated droplet size is mainly affected by the type of the nebulizer employed. Currently, jet, ultrasonic, and vibrating mesh nebulizers are marketed; the latter can deliver optimal antibiotic particle size...
July 24, 2017: Drugs
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