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https://www.readbyqxmd.com/read/28728050/topoisomerase-expression-and-amplification-in-solid-tumours-analysis-of-24-262-patients
#1
Gregory M Heestand, Maria Schwaederle, Zoran Gatalica, David Arguello, Razelle Kurzrock
BACKGROUND: Topoisomerase I (TOPO1) and topoisomerase IIα (TOP2A) are specific targets of multiple chemotherapy drugs. Increased expression of TOPO1 protein and amplification of the TOP2A gene have been associated with treatment response in colorectal and breast cancers, respectively. TOPO1 and TOP2A may be potential therapeutic targets in other malignancies as well. SUMMARY OF METHODS: We analysed TOPO1 protein expression and TOP2A gene amplification in patients (n = 24,262 specimens) with diverse cancers...
July 17, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28725634/ip3-receptor-mediated-calcium-signaling-and-its-role-in-autophagy-in-cancer
#2
REVIEW
Elzbieta Kania, Gemma Roest, Tim Vervliet, Jan B Parys, Geert Bultynck
Calcium ions (Ca(2+)) play a complex role in orchestrating diverse cellular processes, including cell death and survival. To trigger signaling cascades, intracellular Ca(2+) is shuffled between the cytoplasm and the major Ca(2+) stores, the endoplasmic reticulum (ER), the mitochondria, and the lysosomes. A key role in the control of Ca(2+) signals is attributed to the inositol 1,4,5-trisphosphate (IP3) receptors (IP3Rs), the main Ca(2+)-release channels in the ER. IP3Rs can transfer Ca(2+) to the mitochondria, thereby not only stimulating core metabolic pathways but also increasing apoptosis sensitivity and inhibiting basal autophagy...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28725218/all-new-faces-of-diatoms-potential-source-of-nanomaterials-and-beyond
#3
REVIEW
Meerambika Mishra, Ananta P Arukha, Tufail Bashir, Dhananjay Yadav, G B K S Prasad
Nature's silicon marvel, the diatoms have lately astounded the scientific community with its intricate designs and lasting durability. Diatoms are a major group of phytoplanktons involved in the biogeochemical cycling of silica and are virtually inherent in every environment ranging from water to ice to soil. The usage of diatoms has proved prudently cost effective and its handling neither requires costly materials nor sophisticated instruments. Diatoms can easily be acquired from the environment, their culture requires ambient condition and does not involve any costly media or expensive instruments, besides, they can be transported in small quantities and proliferated to a desirable confluence from that scratch, thus are excellent cost effective industrial raw material...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28724427/curcumin-the-spicy-modulator-of-breast-carcinogenesis
#4
REVIEW
Urmila Banik, Subramani Parasuraman, Arun Kumar Adhikary, Nor Hayati Othman
Worldwide breast cancer is the most common cancer in women. For many years clinicians and the researchers are examining and exploring various therapeutic modalities for breast cancer. Yet the disease has remained unconquered and the quest for cure is still going on. Present-day strategy of breast cancer therapy and prevention is either combination of a number of drugs or a drug that modulates multiple targets. In this regard natural products are now becoming significant options. Curcumin exemplifies a promising natural anticancer agent for this purpose...
July 19, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28724415/identification-and-characterization-of-the-antiplasmodial-activity-of-hsp90-inhibitors
#5
Claribel Murillo-Solano, Chunmin Dong, Cecilia G Sanchez, Juan C Pizarro
BACKGROUND: The recent reduction in mortality due to malaria is being threatened by the appearance of Plasmodium falciparum parasites that are resistant to artemisinin in Southeast Asia. To limit the impact of resistant parasites and their spread across the world, there is a need to validate anti-malarial drug targets and identify new leads that will serve as foundations for future drug development programmes targeting malaria. Towards that end, the antiplasmodial potential of several Hsp90 inhibitors was characterized...
July 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28723622/dual-targeting-of-mdm2-and-bcl2-as-a-therapeutic-strategy-in-neuroblastoma
#6
Alan Van Goethem, Nurten Yigit, Myrthala Moreno-Smith, Sanjeev A Vasudevan, Eveline Barbieri, Frank Speleman, Jason Shohet, Jo Vandesompele, Tom Van Maerken
Wild-type p53 tumor suppressor activity in neuroblastoma tumors is hampered by increased MDM2 activity, making selective MDM2 antagonists an attractive therapeutic strategy for this childhood malignancy. Since monotherapy in cancer is generally not providing long-lasting clinical responses, we here aimed to identify small molecule drugs that synergize with idasanutlin (RG7388). To this purpose we evaluated 15 targeted drugs in combination with idasanutlin in three p53 wild type neuroblastoma cell lines and identified the BCL2 inhibitor venetoclax (ABT-199) as a promising interaction partner...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723256/quantitative-testing-of-buprenorphine-and-norbuprenorphine-to-identify-urine-sample-spiking-during-office-based-opioid-treatment
#7
Joji Suzuki, Jennifer Zinser, Mohammed Issa, Claudia Rodriguez
BACKGROUND: Patients may spike urine samples with buprenorphine during office-based opioid treatment to simulate adherence to prescribed buprenorphine, potentially to conceal diversion of medications. However, routine immunoassay screens do not detect instances of spiking, as these would simply result in a positive result. We report on our clinic's experience using quantitative urine testing for buprenorphine and norbuprenorphine to facilitate the identification of urine spiking. METHODS: This is a retrospective chart review of 168 consecutive patients enrolled in outpatient buprenorphine treatment at an urban academic medical setting between May 2013 and August 2014...
July 19, 2017: Substance Abuse
https://www.readbyqxmd.com/read/28722469/recent-advances-in-gossypol-derivatives-and-analogs-a-chemistry-and-biology-view
#8
Yuzhi Lu, Jun Li, Chun-E Dong, Jian Huang, Hai-Bing Zhou, Wei Wang
Gossypol as a natural occurring polyphenol has been studied in a wide range of therapeutic contexts for a long time. The chemical modifications on gossypol were limited due to the unique chemical properties of polyphenols. The design and synthesis of gossypol derivatives and the exploration of their biological activities are the interest of the synthetic chemists, medicinal chemists and pharmacologists. Thus, the progress of diverse gossypol derivatives and analogs' synthesis, biological activities, mechanism elucidation and drug discovery based on gossypol scaffold is summarized...
July 19, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28722340/a-novel-small-molecule-inhibitor-of-prion-replication-and-mutant-prion-protein-toxicity
#9
Tania Massignan, Valeria Sangiovanni, Silvia Biggi, Claudia Stincardini, Saioa R Elezgarai, Giulia Maietta, Ivan A Andreev, Nina K Ratmanova, Dmitry S Belov, Evgeny R Lukyanenko, Grigory M Belov, Maria Letizia Barreca, Andrea Altieri, Alexander V Kurkin, Emiliano Biasini
Prion diseases are a class of neurodegenerative disorders characterized by the accumulation in the brain of a self-replicating, misfolded isoform (PrPSc) of the cellular prion protein (PrPC), a cell-surface glycoprotein of uncertain function. Emerging evidence suggests that PrPC may passively serve as a substrate for the replication of PrPSc, and actively transduce its toxic effects to neuronal cells. The vast majority of previous drug screening campaigns have only targeted PrPSc replication, with largely unsuccessful results...
July 19, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28722211/using-prescription-monitoring-program-data-to-characterize-out-of-pocket-payments-for-opioid-prescriptions-in-a-state-medicaid-program
#10
Daniel M Hartung, Sharia M Ahmed, Luke Middleton, Joshua Van Otterloo, Kun Zhang, Shellie Keast, Hyunjee Kim, Kirbee Johnston, Richard A Deyo
BACKGROUND: Out-of-pocket payment for prescription opioids is believed to be an indicator of abuse or diversion, but few studies describe its epidemiology. Prescription drug monitoring programs (PDMPs) collect controlled substance prescription fill data regardless of payment source and thus can be used to study this phenomenon. OBJECTIVE: To estimate the frequency and characteristics of prescription fills for opioids that are likely paid out-of-pocket by individuals in the Oregon Medicaid program...
July 19, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28722080/-a-surgery-oriented-classification-in-conversion-therapy-of-gastric-cancer
#11
Ziyu Li, Kan Xue, Jiafu Ji
Clinical practice showed that some advanced gastric cancer (AGC) patients achieved long-term survival after surgery, whereas some benefited from non-surgical treatment. In recent years, with the emergence of new drugs, diversity of treatment and development of multi-disciplinary team, the concept of conversion therapy comes into attention. Owing to diverse phenotypes with scattered cases, publications are mainly case reports or small sample studies from single centers, which makes it hard to acquire high-level evidence...
July 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28721965/the-rise-of-global-health-diplomacy-an-interdisciplinary-concept-linking-health-and-international-relations
#12
Vijay Kumar Chattu
Global health diplomacy (GHD) is relatively a very new field that has yet to be clearly defined and developed though there are various definitions given by different experts from foreign policy, global health, diplomacy, international relations, governance, and law. With the intensification of globalization and increasing gaps between countries, new and reemerging health threats such as HIV/AIDS, tuberculosis, influenza, severe acute respiratory syndrome, Ebola, and Zika and a gradual rethinking on security concepts framed a new political context...
April 2017: Indian Journal of Public Health
https://www.readbyqxmd.com/read/28721208/new-perspectives-on-the-regulation-of-type-ii-inflammation-in-asthma
#13
REVIEW
Mireya Becerra-Díaz, Marsha Wills-Karp, Nicola M Heller
Asthma is a chronic inflammatory disease of the lungs which has been thought to arise as a result of inappropriately directed T helper type-2 (Th2) immune responses of the lungs to otherwise innocuous inhaled antigens. Current asthma therapeutics are directed towards the amelioration of downstream consequences of type-2 immune responses (i.e. β-agonists) or broad-spectrum immunosuppression (i.e. corticosteroids). However, few approaches to date have been focused on the primary prevention of immune deviation...
2017: F1000Research
https://www.readbyqxmd.com/read/28721198/brd4-inhibition-for-the-treatment-of-pathological-organ-fibrosis
#14
REVIEW
Matthew S Stratton, Saptarsi M Haldar, Timothy A McKinsey
Fibrosis is defined as excess deposition of extracellular matrix, resulting in tissue scarring and organ dysfunction. It is estimated that 45% of deaths in the developed world are due to fibrosis-induced organ failure. Despite the well-accepted role of fibrosis in the pathogenesis of numerous diseases, there are only two US Food and Drug Administration-approved anti-fibrotic therapies, both of which are currently restricted to the treatment of pulmonary fibrosis. Thus, organ fibrosis represents a massive unmet medical need...
2017: F1000Research
https://www.readbyqxmd.com/read/28720134/in-vitro-antioxidant-and-antimalarial-activities-of-leaves-pods-and-bark-extracts-of-acacia-nilotica-l-del
#15
Muhammad Bilal Sadiq, Pattamon Tharaphan, Kesinee Chotivanich, Joel Tarning, Anil Kumar Anal
BACKGROUND: The emergence of drug resistant malaria is threatening our ability to treat and control malaria in the Southeast Asian region. There is an urgent need to develop novel and chemically diverse antimalarial drugs. This study aimed at evaluating the antimalarial and antioxidant potentials of Acacia nilotica plant extracts. METHODS: The antioxidant activities of leaves, pods and bark extracts were determined by standard antioxidant assays; reducing power capacity, % lipid peroxidation inhibition and ferric reducing antioxidant power assay...
July 18, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28719728/robust-acenaphthoimidazolylidene-palladacycles-highly-efficient-catalysts-for-the-amination-of-n-heteroaryl-chlorides
#16
Tao Tu, Qinyue Deng, Yang Zhang, Haibo Zhu
A series of robust N-heterocyclic carbene palladacycles have been successfully developed, which exhibited high catalytic activity and selectivity toward the challenging amination of N-heteroaryl chlorides. Diverse primary and secondary amines are fully compatible with our new developed catalytic system. Remarkably, no double amination products could be detected when primary amines were utilized in our catalytic transformation. Furthermore, the protocol has been successfully extended to synthesize Rosiglitazone, a clinical drug for diabetes mellitus, highlighting its potential pharmaceutical feasibility...
July 18, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28719264/the-human-microbiome-in-the-fight-against-tuberculosis
#17
Madeleine R Wood, Elaine A Yu, Saurabh Mehta
AbstractThe human microbiome is an intriguing potentially modifiable risk factor in our arsenal against Mycobacterium tuberculosis, the leading infectious disease killer globally. Previous studies have shown associations between the human microbiome and pulmonary disease states; however, etiological links between the microbiome and tuberculosis (TB) infection or disease remain unclear. Immunomodulatory roles of the microbiome may prove to be a critical asset in the host response against TB, including in preventing TB infection, reducing progression from latency, mitigating disease severity, and lowering the incidence of drug resistance and coinfections...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719188/phage-selection-of-cyclic-peptides-for-application-in-research-and-drug-development
#18
Kaycie Deyle, Xu-Dong Kong, Christian Heinis
Cyclic peptides can bind to protein targets with high affinities and selectivities, which makes them an attractive modality for the development of research reagents and therapeutics. Additional properties, including low inherent toxicity, efficient chemical synthesis, and facile modification with labels or immobilization reagents, increase their attractiveness. Cyclic peptide ligands against a wide range of protein targets have been isolated from natural sources such as bacteria, fungi, plants, and animals...
July 18, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28719033/identification-of-driver-copy-number-alterations-in-diverse-cancer-types-and-application-in-drug-repositioning
#19
Wenbin Zhou, Zhangxiang Zhao, Ruiping Wang, Yue Han, Chengyu Wang, Fan Yang, Ya Han, Haihai Liang, Lishuang Qi, Chenguang Wang, Zheng Guo, Yunyan Gu
Results from numerous studies suggest an important role for somatic copy number alterations (SCNAs) in cancer progression. Our work aimed to identify the drivers (oncogenes or tumor suppressor genes) that reside in recurrently aberrant genomic regions, including a large number of genes or non-coding genes, which remain a challenge for decoding the SCNAs involved in carcinogenesis. Here, we propose a new approach to comprehensively identify drivers, using 8740 cancer samples involving 18 cancer types from The Cancer Genome Atlas (TCGA)...
July 18, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28718424/targeted-therapy-and-immunosuppression-in-the-tumor-microenvironment
#20
REVIEW
Michael J Allegrezza, Jose R Conejo-Garcia
Small-molecule inhibitors offer great promise for targeting pathways that are specifically deregulated in different tumors. However, such 'targeted' therapies also elicit poorly understood effects on protective antitumor immunity. Given the emerging relevance of immunotherapies that boost pre-existing T cell responses, understanding how different immune cells are affected by small-molecule inhibitors could lead to more-effective interventions, alone or combined with immunotherapy. This review discusses the growing array of activities elicited by multiple 'targeted' inhibitors on antitumor immunity, underscoring the complex effects resulting from diverse activities on different immune cell types in vivo, and the need to conduct mechanistic research that identifies drugs performing well not only in immunocompromised mice but also in the presence of spontaneous or therapeutic antitumor immunity...
January 2017: Trends in Cancer
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