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https://www.readbyqxmd.com/read/28441013/cytotoxicity-of-pyrazine-based-cyclometalated-c-n-pz-c-au-iii-carbene-complexes-impact-of-the-nature-of-the-ancillary-ligand-on-the-biological-properties
#1
Benoît Bertrand, Julio Fernandez-Cestau, Jesus Angulo, Marco M D Cominetti, Zoë A E Waller, Mark Searcey, Maria A O'Connell, Manfred Bochmann
The synthesis of a series of cyclometalated gold(III) complexes supported by pyrazine-based (C^N^C)-type pincer ligands is reported, including the crystal structure of a cationic example. The compounds provide a new platform for the study of antiproliferative properties of gold(III) complexes. Seven complexes were tested: the neutral series (C^N(pz)^C)AuX [X = Cl (1), 6-thioguanine (4), C≡CPh (5), SPh (6)] and an ionic series that included the N-methyl complex [(C^N(pzMe)^C)AuCl]BF4 (7) and the N-heterocyclic carbene complexes [(C^N(pz)^C)AuL](+) with L = 1,3-dimethylbenzimidazol-2-ylidene (2) or 1,3,7,9-tetramethylxanthin-8-ylidene (3)...
April 25, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28440547/development-of-lc-qtof-ms-method-for-human-lung-tissue-fingerprinting-a-preliminary-application-to-non-small-cell-lung-cancer
#2
Michal Ciborowski, Joanna Kisluk, Karolina Pietrowska, Paulina Samczuk, Ewa Parfieniuk, Tomasz Kowalczyk, Miroslaw Kozlowski, Adam Kretowski, Jacek Niklinski
The major histologic subtypes of non-small cell lung cancer (NSCLC) include adenocarcinoma (ADC), squamous cell lung carcinoma (SCC), and large-cell carcinoma (LCC). Clinical trials of targeted agents and newer chemotherapy agents yielded differences in outcomes according to histologic subgroups providing a rationale for histology-based treatment in NSCLC. Currently NSCLC subtyping is performed based on histopathological examinations and immunohistochemistry. However available methods leave about 10% of NSCLC cases as not otherwise specified...
April 25, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28440542/menstrual-and-reproductive-factors-and-lung-cancer-risk-a-pooled-analysis-from-the-international-lung-cancer-consortium-ilcco
#3
Soumaya Ben Khedher, Monica Neri, Alexandra Papadopoulos, David C Christiani, Nancy Diao, Curtis C Harris, Susan Olivo-Marston, Ann G Schwartz, Michele Cote, Anita Koushik, Jack Siemiatycki, Maria Teresa Landi, Rayjean J Hung, John McLaughlin, Eric J Duell, Angeline S Andrew, Irene Orlow, Bernard J Park, Hermann Brenner, Kai-Uwe Saum, Angela C Pesatori, Isabelle Stücker
Many clinical features of lung cancer are different in women and men. Sex steroid hormones exert effects in non-reproductive organs, such as the lungs. The association between menstrual and childbearing factors and the risk of lung cancer among women is still debated. We performed a pooled analysis of eight studies contributing to the International Lung Cancer Consortium (ILCCO; 4,386 cases and 4,177 controls). Pooled associations between menstrual or reproductive factors and lung cancer were estimated using multivariable unconditional logistic regression...
April 25, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28440468/vitamin-d-attenuates-hyperoxia-induced-lung-injury-through-downregulation-of-toll-like-receptor%C3%A2-4
#4
Li Yao, Yongyan Shi, Xinyi Zhao, Ana Hou, Yujiao Xing, Jianhua Fu, Xindong Xue
With considerable morbidity and mortality, bronchopulmonary dysplasia (BPD) is a focus of attention in neonatology. Hyperoxia-induced lung injury has long been used as a model of BPD. Among all the signaling pathways involved, Toll-like receptor 4 (TLR4) has been demonstrated to play an important role, and is known to be regulated by vitamin D. This study aimed at elucidating the effect of vitamin D on hyperoxia-induced lung injury and the role of TLR4 in the process. Vitamin D was administered to hyperoxia-treated neonatal rats to investigate changes in the morphology of lungs and expression of pro-inflammatory cytokines, apoptotic proteins and TLR4...
April 21, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28440069/occult-cancer-related-first-venous-thromboembolism-is-associated-with-an-increased-risk-of-recurrent-venous-thromboembolism
#5
Olga V Gran, Sigrid K Braekkan, Benedikte Paulsen, Hanne Skille, Frits R Rosendaal, John-Bjarne Hansen
BACKGROUND: Although venous thromboembolism (VTE) is associated with a high recurrence rate, the absolute recurrence rates in cancer-related VTE, particularly in occult cancer, are not well known. OBJECTIVES: We aimed to investigate the risk of VTE recurrence in patients with occult- and overt cancer-related VTE. METHODS: Incident VTE events among participants of the Tromsø 1-6 surveys occurring in the period 1994-2012 were included. Occult cancer was defined as cancer diagnosed within a year following a VTE, whereas overt cancer was defined as cancer diagnosed within the two years before a VTE...
April 25, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28439933/effect-of-anti-ige-in-occupational-asthma-caused-by-exposure-to-low-molecular-weight-agents
#6
M Ollé-Monge, M J Cruz, S Gomez-Ollés, I Ojanguren, J Vanoirbeek, X Muñoz
BACKGROUND: The role of immunoglobulin (Ig)-E in occupational asthma (OA) due to low molecular weight (LMW) agents is not well established compared to classical atopic asthma. In the present study we evaluate whether anti-IgE monoclonal antibody (mAb) has an effect in a mouse model of OA, using persulfate salts. METHODS: On days 1 and 8, BALB/C mice were dermally sensitized with 5% ammonium persulfate (AP) or dimethyl sulfoxide (DMSO). On days 15, 18 and 21 animals were injected intraperitoneally with anti-IgE mAb or PBS 6 hours before challenge with AP or saline...
April 25, 2017: Allergy
https://www.readbyqxmd.com/read/28439901/biomimetic-strategies-to-recapitulate-organ-specific-microenvironments-for-studying-breast-cancer-metastasis
#7
REVIEW
Akshay A Narkhede, Lalita A Shevde, Shreyas S Rao
The progression of breast cancer from the primary tumor setting to the metastatic setting is the critical event defining stage IV disease, no longer considered curable. The microenvironment at specific organ sites is known to play a key role in influencing the ultimate fate of metastatic cells; yet microenvironmental mediated-molecular mechanisms underlying organ specific metastasis in breast cancer are not well understood. This review discusses biomimetic strategies employed to recapitulate metastatic organ microenvironments, particularly, bone, liver, lung and brain to elucidate the mechanisms dictating metastatic breast cancer cell homing and colonization...
April 25, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28439569/the-obesity-paradox-in-kidney-disease-how-to-reconcile-it-with-obesity-management
#8
Kamyar Kalantar-Zadeh, Connie M Rhee, Jason Chou, S Foad Ahmadi, Jongha Park, Joline Lt Chen, Alpesh N Amin
Obesity, a risk factor for de novo chronic kidney disease (CKD), confers survival advantages in advanced CKD. This so-called obesity paradox is the archetype of the reverse epidemiology of cardiovascular risks, in addition to the lipid, blood pressure, adiponectin, homocysteine, and uric acid paradoxes. These paradoxical phenomena are in sharp contradistinction to the known epidemiology of cardiovascular risks in the general population. In addition to advanced CKD, the obesity paradox has also been observed in heart failure, chronic obstructive lung disease, liver cirrhosis, and metastatic cancer, as well as in the elderly...
March 2017: KI Reports
https://www.readbyqxmd.com/read/28439270/cytokine-regulation-of-na-k-cl-cotransporter-1-and-cystic-fibrosis-transmembrane-conductance-regulator-potential-role-in-pulmonary-inflammation-and-edema-formation
#9
REVIEW
Sarah Weidenfeld, Wolfgang M Kuebler
Pulmonary edema, a major complication of lung injury and inflammation, is defined as accumulation of extravascular fluid in the lungs leading to impaired diffusion of respiratory gases. Lung fluid balance across the alveolar epithelial barrier protects the distal airspace from excess fluid accumulation and is mainly regulated by active sodium transport and Cl(-) absorption. Increased hydrostatic pressure as seen in cardiogenic edema or increased vascular permeability as present in inflammatory lung diseases such as the acute respiratory distress syndrome (ARDS) causes a reversal of transepithelial fluid transport resulting in the formation of pulmonary edema...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28438698/chitosan-and-hyaluronan-coated-liposomes-for-pulmonary-administration-of-curcumin
#10
Maria Manconi, Maria Letizia Manca, Donatella Valenti, Elvira Escribano, Hervé Hillaireau, Anna Maria Fadda, Elias Fattal
Aiming at improving the nebulization performances and lung antioxidant protection of curcumin, chitosan or hyaluronan-coated liposomes were prepared and their characteristics and performances were compared with that of uncoated liposomes. Curcumin loaded liposomes displayed a diameter lower than 100nm, the coating with both polymers led to a small increase of vesicle size around 130nm and the zeta potential turned to positive values using chitosan while remained negative using hyaluronan. Chitosan allowed the formation of more lamellar and stiffer vesicles with a higher bilayer thickness (dB∼59Ǻ) with respect to the uncoated liposomes, whereas hyaluronan allowed the interdigitation of the bilayers (dB∼47Ǻ) due to the polymer intercalation between phospholipid head groups resulting in vesicles mainly organized in uncorrelated bilayers...
April 21, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28438162/targeting-of-nicotinamide-phosphoribosyltransferase-enzymatic-activity-ameliorates-lung-damage-induced-by-ischemia-reperfusion-in-rats
#11
Geng-Chin Wu, Wen-I Liao, Shu-Yu Wu, Hsin-Ping Pao, Shih-En Tang, Min-Hui Li, Kun-Lun Huang, Shi-Jye Chu
BACKGROUND: Emerging evidence reveals that nicotinamide phosphoribosyltransferase (NAMPT) has a significant role in the pathophysiology of the inflammatory process. NAMPT inhibition has a beneficial effect in the treatment of a variety of inflammatory diseases. However, it remains unclear whether NAMPT inhibition has an impact on ischemia-reperfusion (I/R)-induced acute lung injury. In this study, we examined whether NAMPT inhibition provided protection against I/R lung injury in rats...
April 24, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28437852/a-diagnostic-microdosing-approach-to-investigate-platinum-sensitivity-in-non-small-cell-lung-cancer
#12
Si-Si Wang, Maike Zimmermann, Hongyong Zhang, Tzu-Yin Lin, Michael Malfatti, Kurt Haack, Kenneth W Turteltaub, George D Cimino, Ralph de Vere White, Chong-Xian Pan, Paul T Henderson
The platinum-based drugs cisplatin, carboplatin and oxaliplatin are often used for chemotherapy, but drug resistance is common. The prediction of resistance to these drugs via genomics is a challenging problem since hundreds of genes are involved. A possible alternative is to use mass spectrometry to determine the propensity for cells to form drug-DNA adducts-the pharmacodynamic drug-target complex for this class of drugs. The feasibility of predictive diagnostic microdosing was assessed in non-small cell lung cancer (NSCLC) cell culture and a pilot clinical trial...
April 24, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28437620/american-association-of-clinical-endocrinologists-and-american-college-of-endocrinology-guidelines-for-management-of-dyslipidemia-and-prevention-of-cardiovascular-disease
#13
Paul S Jellinger, Yehuda Handelsman, Paul D Rosenblit, Zachary T Bloomgarden, Vivian A Fonseca, Alan J Garber, George Grunberger, Chris K Guerin, David S H Bell, Jeffrey I Mechanick, Rachel Pessah-Pollack, Kathleen Wyne, Donald Smith, Eliot A Brinton, Sergio Fazio, Michael Davidson
OBJECTIVE: The development of these guidelines is mandated by the American Association of Clinical Endocrinologists (AACE) Board of Directors and American College of Endocrinology (ACE) Board of Trustees and adheres with published AACE protocols for the standardized production of clinical practice guidelines (CPGs). METHODS: Recommendations are based on diligent reviews of the clinical evidence with transparent incorporation of subjective factors, according to established AACE/ACE guidelines for guidelines protocols...
April 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28437599/human-%C3%AE-defensin-3-induces-il-8-release-and-apoptosis-in-airway-smooth-muscle-cells
#14
Weijia Wang, Xiaoyan Qu, Xiaomin Dang, Dong Shang, Liang Yang, Ying Li, Dan Xu, James G Martin, Qutayba Hamid, Jiankang Liu, Ying Chang
BACKGROUND: Human airway smooth muscle cells (ASMCs) may have a pro-inflammatory role through the release of inflammatory mediators. Increasing evidence indicates that human β-defensins (HBDs) are related to pathogenesis of asthma. OBJECTIVES: To examine the plasma level of HBD-1, -2 and -3 in asthmatic patients and the expression of their mouse orthologs in the lung tissue of a mouse model of chronic severe asthma. Further to investigate the effect of HBD-3 on the release of the pro-inflammatory cytokine IL-8 and to explore the mechanisms...
April 24, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28437377/microrna-21-is-required-for-local-and-remote-ischemic-preconditioning-in-multiple-organ-protection-against-sepsis
#15
Ping Jia, Xiaoli Wu, Yan Dai, Jie Teng, Yi Fang, Jiachang Hu, Jianzhou Zou, Mingyu Liang, Xiaoqiang Ding
OBJECTIVE: Sepsis, triggered by microbial infection, is a common and life-threatening systemic illness, often leads to impaired function of vital organs. Ischemic preconditioning induced by transient brief episodes of ischemia is a powerful innate mechanism of organ protection. We have reported that a 15-minute renal ischemic preconditioning substantially attenuated subsequent renal ischemia-reperfusion injury. Here, we investigate whether a brief ischemia and reperfusion in kidney can provide protection at local and remote sites against sepsis-induced organ injury, and whether this protection is microRNA-21 dependent...
April 21, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28437189/metformin-attenuates-radiation-induced-pulmonary-fibrosis-in-a-murine-model
#16
Jian Wang, Ye Wang, Jun Han, Hong Mei, Dandan Yu, Qian Ding, Tao Zhang, Gang Wu, Gang Peng, Zhenyu Lin
While radiotherapy continues to be a major cancer treatment option, its dose-limiting side effects, such as pulmonary fibrosis, severely impair the quality of life in these patients. In this study, we evaluated the radioprotective effects of metformin, a commonly used biguanide antidiabetic medication, in a murine model of pulmonary damage. Sprague Dawley(®) rats received whole lung 20 Gy irradiation with or without metformin treatment. Computed tomography (CT) was performed and Hounsfield units (HU) were determined during the observation period...
April 24, 2017: Radiation Research
https://www.readbyqxmd.com/read/28436715/controlled-invasive-mechanical-ventilation-strategies-in-obese-patients-undergoing-surgery
#17
Lígia de Albuquerque Maia, Pedro Leme Silva, Paolo Pelosi, Patricia Rieken Macedo Rocco
The obesity prevalence is increasing in surgical population. As the number of obese surgical patients increases, so does the demand for mechanical ventilation. Nevertheless, ventilatory strategies in this population are challenging, since obesity results in pathophysiological changes in respiratory function. Areas covered: We reviewed the impact of obesity on respiratory system and the effects of controlled invasive mechanical ventilation strategies in obese patients undergoing surgery. To date, there is no consensus regarding the optimal invasive mechanical ventilation strategy for obese surgical patients, and no evidence that possible intraoperative beneficial effects on oxygenation and mechanics translate into better postoperative pulmonary function or improved outcomes...
April 24, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28436493/an-attenuated-mycobacterium-tuberculosis-clinical-strain-with-a-defect-in-esx-1-secretion-induces-minimal-host-immune-responses-and-pathology
#18
Helena Strand Clemmensen, Niels Peter Hell Knudsen, Erik Michael Rasmussen, Jessica Winkler, Ida Rosenkrands, Ahmad Ahmad, Troels Lillebaek, David R Sherman, Peter Lawætz Andersen, Claus Aagaard
Although Mycobacterium tuberculosis (M.tb) DK9897 is an attenuated strain, it was isolated from a patient with extrapulmonary tuberculosis and vaccination with a subunit vaccine (H56) induced poor protection against it. Both attenuation and lack of protection are because M.tb DK9897 cannot secrete the EsxA virulence factor nor induce a host response against it. Genome sequencing identified a frameshift mutation in the eccCa1 gene. Since the encoded EccCa1 protein provides energy for ESX-1 secretion, it suggested a defect in the ESX-1 type VII secretion system...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28436350/prevalence-and-risk-factors-for-gastric-ulceration-in-pigs-slaughtered-at-170-kg
#19
F Gottardo, A Scollo, B Contiero, M Bottacini, C Mazzoni, S A Edwards
Oesophago-gastric ulcers (OGU) are a production and welfare problem in pigs. Stomach condition was scored for 22 551 pigs in 228 batches over a 7-month period at an abattoir in Italy processing heavy pigs for ham production. Mild or severe ulceration was observed in 20.7% of pigs, of which 13% had scar tissue. Variation between batches was high (0% to 36% prevalence of severe ulcers) and showed a significant effect of farm of origin (P<0.001). Overnight lairage increased the prevalence of mild ulcers (P<0...
April 24, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28434195/use-of-isavuconazole-in-a-patient-with-voriconazole-induced-qtc-prolongation
#20
Tracy P Trang, Alexandra M Hanretty, Charles Langelier, Katherine Yang
A 22-year-old woman with cystic fibrosis developed QTc-interval prolongation following lung transplantation in the setting of voriconazole therapy. After the discontinuation of voriconazole and initiation of isavuconazole, her QTc interval normalized. This case highlights the unique property of QTc interval shortening by isavuconazole among the triazole antifungals. This article is protected by copyright. All rights reserved.
April 23, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
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