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https://www.readbyqxmd.com/read/28346858/circulating-soluble-il-6-receptor-concentration-and-visceral-adipocyte-size-are-related-to-insulin-resistance-in-taiwanese-adults-with-morbid-obesity
#1
Feng-Chih Kuo, Ya-Hsien Huang, Fu-Huang Lin, Yi-Jen Hung, Chang-Hsun Hsieh, Chieh-Hua Lu, Sheng-Chiang Su, Chia-Luen Huang, Chien-Hsing Lee, Nain-Feng Chu
BACKGROUND: Morbid obesity is related to chronic inflammation and many metabolic complications. Interleukin (IL)-6 plays a pivotal pathophysiological role in obesity, and IL-6 trans-signaling through the soluble IL-6 receptor (sIL-6R) has a major proinflammatory effect. The aim of this study was to investigate the association between sIL-6R, adipocyte size, and insulin resistance in morbidly obese individuals. METHODS: We measured concentrations of sIL-6R, high-sensitivity C-reactive protein, and lipid parameters and estimated homeostasis model assessment of insulin resistance (HOMA-IR) before the patients underwent bariatric surgery...
March 27, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28346849/clostridium-perfringens-type-a-isolates-of-animal-origin-with-decreased-susceptibility-to-metronidazole-show-extensive-genetic-diversity
#2
Sergio Álvarez-Pérez, José L Blanco, Marta E García
Metronidazole is a first-line drug for the treatment of human infections caused by anaerobic bacteria. Although most Clostridium perfringens isolates are susceptible to metronidazole, a number of strains with decreased susceptibility have been obtained in clinical and environmental surveys. However, little is known yet about the toxinotype and genetic diversity of metronidazole-resistant C. perfringens strains. We tested for susceptibility to metronidazole and assessed the toxigenic status and amplified fragment length polymorphism (AFLP) diversity of a collection of 80 C...
March 27, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28346803/carbapenemase-producing-aeromonas-veronii-disseminated-in-the-environment-of-an-equine-specialty-hospital
#3
Rachael J Adams, Dimitria A Mathys, Dixie F Mollenkopf, Andrea Whittle, Joshua B Daniels, Thomas E Wittum
The emergence of bacterial resistance to carbapenem antibiotics is an urgent public health threat. Carbapenem drugs are a last resort treatment option for life-threatening infections. The frequent use of broad-spectrum antibiotics to treat hospitalized patients provides significant selection pressure favoring the emergence and dissemination of resistant organisms, including carbapenem-resistant Enterobacteriaceae (CRE). CREs have been reported in animal populations, but only rarely in horses. Our objective was to determine the prevalence of CRE in the environment of a referral equine specialty hospital...
March 27, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28346540/fragment-library-screening-identifies-hits-that-bind-to-the-non-catalytic-surface-of-pseudomonas-aeruginosa-dsba1
#4
Biswaranjan Mohanty, Kieran Rimmer, Róisín M McMahon, Stephen J Headey, Mansha Vazirani, Stephen R Shouldice, Mathieu Coinçon, Stephanie Tay, Craig J Morton, Jamie S Simpson, Jennifer L Martin, Martin J Scanlon
At a time when the antibiotic drug discovery pipeline has stalled, antibiotic resistance is accelerating with catastrophic implications for our ability to treat bacterial infections. Globally we face the prospect of a future when common infections can once again kill. Anti-virulence approaches that target the capacity of the bacterium to cause disease rather than the growth or survival of the bacterium itself offer a tantalizing prospect of novel antimicrobials. They may also reduce the propensity to induce resistance by removing the strong selection pressure imparted by bactericidal or bacteriostatic agents...
2017: PloS One
https://www.readbyqxmd.com/read/28346428/autophagy-is-required-for-cell-survival-under-l-asparaginase-induced-metabolic-stress-in-acute-lymphoblastic-leukemia-cells
#5
H Takahashi, J Inoue, K Sakaguchi, M Takagi, S Mizutani, J Inazawa
L-asparaginase has been used for more than three decades in acute lymphoblastic leukemia (ALL) patients and remains an essential drug in the treatment of ALL. Poor response to L-asparaginase is associated with increased risk of therapeutic failure in ALL. However, both the metabolic perturbation and molecular context of L-asparaginase-treated ALL cells has not been fully elucidated. Here we identify that treatment with L-asparaginase results in metabolic shutdown via the reduction of both glycolysis and oxidative phosphorylation, accompanied by mitochondrial damage and activation of autophagy...
March 27, 2017: Oncogene
https://www.readbyqxmd.com/read/28346391/hydrogen-sulphide-production-in-healthy-and-ulcerated-gastric-mucosa-of-rats
#6
Patrycja Bronowicka-Adamska, Maria Wróbel, Marcin Magierowski, Katarzyna Magierowska, Sławomir Kwiecień, Tomasz Brzozowski
Hydrogen sulphide (H₂S) is produced endogenously via two enzymes dependent on pyridoxal phosphate (PLP): cystathionine beta-synthase (CBS, EC 4.2.1.22), cystathionase γ-liase (CTH, EC 4.4.1.1), and a third, 3-mercaptopyruvate sulfurtransferase (MPST, EC 2.8.1.2). H₂S strengthens the defence mechanisms of the gastric mucosal barrier, and plays an important role in gastroprotection, including the increased resistance to damage caused by various irritants and non-steroidal anti-inflammatory drugs. The study was conducted to determine the role of H₂S in ulcerated gastric mucosa of rats caused by immobilization in cold water (WRS)...
March 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28346237/current-and-future-pharmacologic-treatment-of-nonalcoholic-steatohepatitis
#7
Bubu A Banini, Arun J Sanyal
PURPOSE OF REVIEW: Nonalcoholic steatohepatitis (NASH), the aggressive form of nonalcoholic fatty liver disease (NAFLD), can progress to cirrhosis and hepatocellular cancer in 5-15% of patients and is rapidly becoming the leading cause for end-stage liver disease. Dietary caloric restriction and exercise, currently the cornerstone of therapy for NAFLD, can be difficult to achieve and maintain, underscoring the dire need for pharmacotherapy. This review presents the agents currently used in managing NAFLD and their pharmacologic targets...
March 24, 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28346106/isolation-and-characterization-of-a-distinct-subpopulation-from-the-wm115-cell-line-that-resembles-in-vitro-properties-of-melanoma-cancer-stem-cells
#8
Sonia G Escobar, Mark H Chin, Mark L Sandberg, Han Xu
Despite key advances in cancer therapies, malignant tumors, such as melanoma, continue to be one of the leading causes of mortality. Recent debate on whether cancer can originate from a tumor-initiating subpopulation has permeated oncology and stem cell research. It has been well established that primary and immortalized tumor cells consist of heterogeneous cell populations. The profound effect of tumor heterogeneity on tumor growth and drug resistance remains elusive, but it is highly likely that subpopulations of cancer cells have different capabilities of self-renewal and drug resistance...
February 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346100/robotic-mammosphere-assay-for-high-throughput-screening-in-triple-negative-breast-cancer
#9
P A Fitzpatrick, N Akrap, E M V Söderberg, H Harrison, G J Thomson, G Landberg
In order to identify novel treatment principles specifically affecting cancer stem cells in triple-negative breast cancer, we have developed a high-throughput screening method based on the mammosphere and anoikis resistance assays allowing us to screen compounds using a functional readout. The assay was validated against manual protocols and through the use of positive controls, such as the response to hypoxia and treatment with the known cancer stem cell-targeting compound salinomycin. Manual and robotic procedures were compared and produced similar results in cell handling, cell cultures, and counting techniques, with no statistically significant difference produced from either method...
February 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346097/an-optimized-3d-coculture-assay-for-preclinical-testing-of-pro-and-antiangiogenic-drugs
#10
Daniela Unterleuthner, Nina Kramer, Karoline Pudelko, Alexandra Burian, Markus Hengstschläger, Helmut Dolznig
Angiogenesis is a promising target for anticancer therapies, but also for treating other diseases with pathologic vessel development. Targeting the vascular endothelial growth factor (VEGF) pathway did not proof as effective as expected due to emerging intrinsic resistance mechanisms, as well as stromal contributions leading to drug insensitivity. Therefore, alternative strategies affecting the interaction of endothelial cells (ECs) with other stromal cells seem to be more promising. Human preclinical in vitro angiogenesis models successfully recapitulating these interactions are rare, and two-dimensional (2D) cell cultures cannot mimic tissue architecture in vivo...
January 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346095/identification-by-high-throughput-screening-of-pseudomonas-acyl-coenzyme-a-synthetase-inhibitors
#11
Lorenzo Turcano, Daniela Visaggio, Emanuela Frangipani, Antonino Missineo, Matteo Andreini, Sergio Altamura, Paolo Visca, Alberto Bresciani
Pseudomonas infections are common among hospitalized, immunocompromised, and chronic lung disease patients. These infections are recalcitrant to common antibacterial therapies due to inherent antibiotic resistance. To meet the need of new anti- Pseudomonas drugs, a sensitive, homogenous, and robust assay was developed with the aim of identifying inhibitors of acyl-coenzyme A synthetases (ACSs) from Pseudomonas. Given the importance of fatty acids for in vivo nutrition of Pseudomonas, such inhibitors might have the potential to reduce the bacterial fitness during infection...
January 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346091/a-high-throughput-screening-model-of-the-tumor-microenvironment-for-ovarian-cancer-cell-growth
#12
Madhu Lal-Nag, Lauren McGee, Rajarshi Guha, Ernst Lengyel, Hilary A Kenny, Marc Ferrer
The tumor microenvironment plays an important role in the processes of tumor growth, metastasis, and drug resistance. We have used a multilayered 3D primary cell culture model that reproduces the human ovarian cancer metastatic microenvironment to study the effect of the microenvironment on the pharmacological responses of different classes of drugs on cancer cell proliferation. A collection of oncology drugs was screened to identify compounds that inhibited the proliferation of ovarian cancer cells growing as monolayers or forming spheroids, on plastic and on a 3D microenvironment culture model of the omentum metastatic site, and also cells already in preformed spheroids...
January 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346030/antimicrobial-activity-of-eugenol-and-essential-oils-containing-eugenol-a-mechanistic-viewpoint
#13
Anna Marchese, Ramona Barbieri, Erika Coppo, Ilkay Erdogan Orhan, Maria Daglia, Seyed Fazel Nabavi, Morteza Izadi, Mohammad Abdollahi, Seyed Mohammad Nabavi, Marjan Ajami
Eugenol is a hydroxyphenyl propene, naturally occurring in the essential oils of several plants belonging to the Lamiaceae, Lauraceae, Myrtaceae, and Myristicaceae families. It is one of the major constituents of clove (Syzygium aromaticum (L.) Merr. & L.M. Perry, Myrtaceae) oil and is largely used in both foods and cosmetics as a flavoring agent. A large body of recent scientific evidence supports claims from traditional medicine that eugenol exerts beneficial effects on human health. These effects are mainly associated with antioxidant and anti-inflammatory activities...
March 27, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28345838/ercc1-expression-in-metastatic-triple-negative-breast-cancer-patients-treated-with-platinum-based-chemotherapy
#14
Mohamed Ali EL Baiomy, Wagdi F El Kashef
Background: Possible targeted therapies for metastatic triple negative breast cancer (TNBC) include cytotoxic chemotherapy that causes interstrand breaks (platinum-based drugs). The excision repair cross-complementation 1 (ERCC1) enzyme plays an essential role in the nucleotide excision repair pathway, removing platinum-induced DNA adducts and contributing to cisplatin resistance. Detecting ERCC1 overexpression is important in considering treatment options for metastatic TNBC, including individualized approaches to therapy, and may facilitate improved responses or reduction of unnecessary toxicity...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28345829/high-fluoroquinolone-resistant-strains-of-helicobacter-pylori-in-the-golden-triangle
#15
Ratha Korn Vilaichone, Thawee Ratanachu ek, Pornpen Gamnarai, Phawinee Subsomwong, Tomahisa Uchida, Yoshio Yamaoka, Varocha Mahachai
Background and aims: Helicobacter pylori (H. pylori) infections, associated with fatal GI diseases such as gastric cancer and MALT lymphoma, remain a major health problem in ASEAN countries. The Golden triangle has long been known as one of Asia’s main opium-producing areas. There have been no prior studies of H. pylori infection in this area. The major objectives of this project were therefore to establish prevalence, antibiotic resistance patterns and associated predictive in the Golden triangle. Methods: We recruited dyspeptic patients in Chiang khong and Chiang saen districts, Chiangrai province of Thailand...
February 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28345753/outcomes-of-women-diagnosed-and-treated-for-low-risk-gestational-trophoblastic-neoplasia-at-the-queensland-trophoblast-centre-qtc
#16
Lisanne Verhoef, David Baartz, Shona Morrison, Karen Sanday, Andrea Janet Garrett
BACKGROUND: Gestational trophoblastic neoplasia (GTN) is classified as a highly curable group of pregnancy-related malignancies; however, approximately 15% will be persistent and require chemotherapy. Up to 25% of these women will develop resistance and 2% will develop disease relapse after initial chemotherapy. Despite the need for further chemotherapy in these women, cure rates are high. OBJECTIVE: To evaluate the outcomes of women diagnosed with low-risk GTN, assessing the type of treatment, the number of chemotherapy cycles received, development of resistance or disease relapse, survival, and to assess the feasibility of changing to a new drug regimen...
March 27, 2017: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28345667/the-toxicity-of-angiotensin-converting-enzyme-inhibitors-to-larvae-of-the-disease-vectors-aedes-aegypti-and-anopheles-gambiae
#17
Zatul-'Iffah Abu Hasan, Helen Williams, Nur M Ismail, Hidayatulfathi Othman, Gyles E Cozier, K Ravi Acharya, R Elwyn Isaac
The control of mosquitoes is threatened by the appearance of insecticide resistance and therefore new control chemicals are urgently required. Here we show that inhibitors of mosquito peptidyl dipeptidase, a peptidase related to mammalian angiotensin-converting enzyme (ACE), are insecticidal to larvae of the mosquitoes, Aedes aegypti and Anopheles gambiae. ACE inhibitors (captopril, fosinopril and fosinoprilat) and two peptides (trypsin-modulating oostatic factor/TMOF and a bradykinin-potentiating peptide, BPP-12b) were all inhibitors of the larval ACE activity of both mosquitoes...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345623/liposomes-loaded-with-bioactive-lipids-enhance-antibacterial-innate-immunity-irrespective-of-drug-resistance
#18
Noemi Poerio, Francesca Bugli, Francesco Taus, Marilina B Santucci, Carlo Rodolfo, Francesco Cecconi, Riccardo Torelli, Francesco Varone, Riccardo Inchingolo, Fabio Majo, Vincenzina Lucidi, Sabrina Mariotti, Roberto Nisini, Maurizio Sanguinetti, Maurizio Fraziano
Phagocytosis is a key mechanism of innate immunity, and promotion of phagosome maturation may represent a therapeutic target to enhance antibacterial host response. Phagosome maturation is favored by the timely and coordinated intervention of lipids and may be altered in infections. Here we used apoptotic body-like liposomes (ABL) to selectively deliver bioactive lipids to innate cells, and then tested their function in models of pathogen-inhibited and host-impaired phagosome maturation. Stimulation of macrophages with ABLs carrying phosphatidic acid (PA), phosphatidylinositol 3-phosphate (PI3P) or PI5P increased intracellular killing of BCG, by inducing phagosome acidification and ROS generation...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345463/computational-and-mechanistic-studies-on-the-effect-of-galactoxyloglucan-imatinib-nanoconjugate-in-imatinib-resistant-k562-cells
#19
Alphy Rose James, B S Unnikrishnan, R Priya, Manu M Joseph, T K Manojkumar, K Raveendran Pillai, R Shiji, G U Preethi, P Kusumakumary, T T Sreelekha
Imatinib mesylate, a BCR/ABL fusion protein inhibitor, is the first-line treatment against chronic myelogenous leukemia. In spite of its advantageous viewpoints, imatinib still has genuine impediments like undesirable side effects and tumor resistance during chemotherapy. Nanoparticles with sustainable release profile will help in targeted delivery of anticancer drugs while minimizing deleterious side effects and drug resistance. The use of biopolymers like galactoxyloglucan (PST001) for the fabrication of imatinib mesylate nanoparticles could impart its use in overcoming multidrug resistance in chronic myelogenous leukemia patients with minimal side effects...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28345454/genome-wide-profiling-of-micro-rna-expression-in-gefitinib-resistant-human-lung-adenocarcinoma-using-microarray-for-the-identification-of-mir-149-5p-modulation
#20
Yong Hu, Xiaobing Qin, Dali Yan, Haixia Cao, Leilei Zhou, Fan Fan, Jialan Zang, Jie Ni, Xiaoyue Xu, Huanhuan Sha, Siwen Liu, Shaorong Yu, Jianzhong Wu, Rong Ma, Jifeng Feng
To understand the mechanism involved in gefitinib resistance, we established gefitinib-resistant human HCC827/GR-8-1 cell line from the parental HCC827 cell line. We compared the micro-RNA expression profiles of the HCC827 cells HCC827/GR-8-1 using Agilent micro-RNA microarrays. The micro-RNAs, such as the miR-149-5p, were up- or downregulated and associated with acquired gefitinib resistance. Quantitative real-time polymerase chain reaction was then performed to verify the expression patterns of different micro-RNAs...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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