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https://www.readbyqxmd.com/read/28454340/characterization-of-topoisomerase-ii-%C3%AE-and-minichromosome-maintenance-protein-2-expression-in-anal-carcinoma
#1
Cristovam Scapulatempo-Neto, Carlos Veo, José Humberto T G Fregnani, Adriana Lorenzi, Allini Mafra, Armando G F Melani, Edgar Antonio Alemán Loaiza, Luciana Albina Reis Rosa, Cristina Mendes de Oliveira, José Eduardo Levi, Adhemar Longatto-Filho
The present study aimed to ascertain the significance of topoisomerase II α (TOP2A) and minichromosome maintenance protein (MCM) 2 expression in anal carcinoma. A total of 75 anal lesions were retrieved from the files of the Department of Pathology of Barretos Cancer Hospital (Barretos, Brazil) in order to verify the human papillomavirus (HPV) statuses of these lesions and characterize the immunohistochemical expression levels of TOP2A and MCM2 in anal carcinoma, as these are important markers for cervical HPV-induced lesions; their expression was also compared with respect to p16 and Ki-67...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454330/high-bim-mrna-levels-are-associated-with-longer-survival-in-advanced-gastric-cancer
#2
Nandie Wu, Ying Huang, Zhengyun Zou, Ana Gimenez-Capitan, Lixia Yu, Wenjing Hu, Lijing Zhu, Xia Sun, Jose Javier Sanchez, Wenxian Guan, Baorui Liu, Rafael Rosell, Jia Wei
Chemotherapy drugs, including 5-fluorouracil (5-FU), oxaliplatin and docetaxel, are commonly used in the treatment of gastric cancer (GC). Apoptosis-relevant genes may be associated with drug resistance. In the present study, the messenger RNA (mRNA) expression levels of B-cell lymphoma 2 interacting mediator of cell death (BIM), astrocyte elevated gene-1 (AEG-1) and AXL receptor tyrosine kinase (AXL) were investigated in 131 advanced GC samples, and the expression levels of these genes were correlated with patients' overall survival (OS)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454292/dna-vaccine-encoding-human-papillomavirus-antigens-flanked-by-a-signal-peptide-and-a-kdel-sequence-induces-a-potent-therapeutic-antitumor-effect
#3
Jose J Perez-Trujillo, Rodolfo Garza-Morales, Jose A Barron-Cantu, Gabriel Figueroa-Parra, Aracely Garcia-Garcia, Humberto Rodriguez-Rocha, Jaime Garcia-Juarez, Gerardo E Muñoz-Maldonado, Odila Saucedo-Cardenas, Roberto Montes-De-Oca-Luna, Maria De Jesus Loera-Arias
Cellular immune responses play a critical role in the eradication of intracellular infections and malignant cells through the recognition and subsequent removal of the infection or malignant cells. Effective antigen presentation is crucial for stimulating the immune system against malignant cells. Calreticulin (CRT) has been used to improve antigen presentation. However, CRT overexpression has been previously associated with the development of pancreatic and breast cancer. The import and retention signals of CRT in the endoplasmic reticulum (ER) can be used to overcome CRT overexpression...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454218/stereotactic-body-radiation-therapy-for-oligoprogression-of-metastatic-disease-from-gastrointestinal-cancers-a-novel-approach-to-extend-chemotherapy-efficacy
#4
Justin Wray, Rana Fawzi Hawamdeh, Nalini Hasija, Roi Dagan, Anamaria R Yeung, Judith L Lightsey, Paul Okunieff, Karen C Daily, Thomas J George, Robert A Zlotecki, Jose Trevino, Long H Dang
Chemotherapy and targeted therapies are effective palliative options for numerous unresectable or metastatic cancers. However, treatment resistance inevitably develops leading to mortality. In a subset of patients, systemic therapy appears to control the majority of tumors leaving 5 or less to progress, a phenomenon described as oligoprogression. Reasoning that the majority of lesions remain responsive to ongoing systemic chemotherapy, we hypothesized that local treatment of the progressing lesions would confer a benefit...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454146/snr-enhancement-in-high-resolution-phase-sensitive-otdr-systems-using-chirped-pulse-amplification-concepts
#5
Juan Pastor-Graells, Luis Romero Cortés, María R Fernández-Ruiz, Hugo F Martins, José Azaña, Sonia Martin-Lopez, Miguel Gonzalez-Herraez
Phase-sensitive optical time-domain reflectometry (φOTDR) is widely used for the distributed detection of mechanical or environmental variations with resolutions of typically a few meters. The spatial resolution of these distributed sensors is related to the temporal width of the input probe pulses. However, the input pulse width cannot be arbitrarily reduced (to improve the resolution), since a minimum pulse energy is required to achieve a good level of signal-to-noise ratio (SNR), and the pulse peak power is limited by the advent of nonlinear effects...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28453841/the-use-of-quinacrine-in-nitroimidazole-resistant-giardia-duodenalis-an-old-drug-for-an-emerging-problem
#6
Ana Requena-Méndez, Pilar Goñi, Encarnación Rubio, Diana Pou, Victoria Fumadó, Silvia Lóbez, Edelweiss Aldasoro, Juan Cabezos, Maria Eugenia Valls, Begoña Treviño, Antonio Federico Martínez Montseny, Antonio Clavel, Joaquim Gascon, José Muñoz
Background.: There is little evidence regarding the management of refractory giardiasis after treatment with nitroimidazoles. This study estimates the proportion of persistent giardiasis in 3 hospitals in Barcelona, describes associated risk factors and genotype, and evaluates the efficacy rate of quinacrine in those with persistent giardiasis. Methods.: A clinical, prospective, observational study was conducted in patients with giardiasis treated with nitroimidazoles...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28453837/borrelia-burgdorferi-bbi39-paralogs-targets-of-protective-immunity-reduce-pathogen-persistence-either-in-hosts-or-in-the-vector
#7
Preeti Singh, Deepshikha Verma, Brian T Backstedt, Simarjot Kaur, Manish Kumar, Alexis A Smith, Kavita Sharma, Xiuli Yang, José F Azevedo, Maria Gomes-Solecki, Ozlem Buyuktanir, Utpal Pal
Borrelia burgdorferi genome harbors several paralogous gene families (pgf) that can encode immunogenic proteins of unknown function. Protein-protein interaction assays using a transmission-blocking vaccine candidate, BBA52, as bait identified an interacting partner in spirochetes-a member of pgf 54, annotated as BBI39. We show that BBI39 is a surface-exposed membrane antigen that is immunogenic during spirochete infection, despite the gene being primarily transcribed in the vector with a transient expression in the host only at tick-bite sites...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28453834/overproduction-of-outer-membrane-protein-a-by-acinetobacter-baumannii-as-a-risk-factor-for-nosocomial-pneumonia-bacteremia-and-mortality-rate-increase
#8
Viviana Sánchez-Encinales, Rocío Álvarez-Marín, María Eugenia Pachón-Ibáñez, Felipe Fernández-Cuenca, Alvaro Pascual, José Garnacho-Montero, Luis Martínez-Martínez, Jordi Vila, María Mar Tomás, José Miguel Cisneros, Germán Bou, Jesús Rodríguez-Baño, Jerónimo Pachón, Younes Smani
Background.: Outer membrane protein A (OmpA) is a porin involved in Acinetobacter baumannii pathogenesis. However, OmpA clinical implication in hospital-acquired infections remains unknown. We aimed to determine whether OmpA overproduction was a risk factor associated with pneumonia, bacteremia, and mortality. Methods.: We analyzed demographic, microbiological, and clinical data from 100 patients included in a unicenter cohort and 246 included in a unicenter cohort and a multicenter cohort...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28453780/variation-in-maturity-onset-diabetes-of-the-young-genes-influence-response-to-interventions-for-diabetes-prevention
#9
Liana K Billings, Kathleen A Jablonski, A Sofia Warner, Yu-Chien Cheng, Jarred B McAteer, Laura Tipton, Alan R Shuldiner, David A Ehrmann, Alisa K Manning, Dana Dabelea, Paul W Franks, Steven E Kahn, Toni I Pollin, William C Knowler, David Altshuler, Jose C Florez
CONTEXT: Variation in genes that cause Maturity-Onset Diabetes of the Young (MODY) has been associated with diabetes incidence and glycemic traits. OBJECTIVES: This study aimed to determine whether genetic variation in MODY genes leads to differential responses to insulin-sensitizing interventions. DESIGN AND SETTING: This was a secondary analysis of a multicenter randomized clinical trial, the Diabetes Prevention Program (DPP), involving 27 U...
April 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28453684/mappi-dat-data-management-and-analysis-for-protein-protein-interaction-data-from-the-high-throughput-mappit-cell-microarray-platform
#10
Surya Gupta, Veronic De Puysseleyr, José Van der Heyden, Davy Maddelein, Irma Lemmens, Sam Lievens, Sven Degroeve, Jan Tavernier, Lennart Martens
Summary: Protein-protein interaction (PPI) studies have dramatically expanded our knowledge about cellular behaviour and development in different conditions. A multitude of high-throughput PPI techniques have been developed to achieve proteome-scale coverage for PPI studies, including the microarray based Mammalian Protein-Protein Interaction Trap (MAPPIT) system. Because such high-throughput techniques typically report thousands of interactions, managing and analysing the large amounts of acquired data is a challenge...
May 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28453594/-shock-as-an-adverse-reaction-to-rituximab-case-report
#11
Estefanía Palma, Vicente González, Daniela Grünholz, María Landaeta, María Mallea, José Pérez, Tomás Armstrong
Rituximab is a plausible alternative first-line treatment of ANCA-associated vasculitis. Adverse effects related to its infusion are common and usually have a benign course. However, there have been reports of refractory cardiogenic shock simulating septic shock. We report an 81-year-old male with the diagnosis of ANCA associated vasculitis. Rituximab 500 mg was administered intravenously for a relapse. The infusion proceeded without incident. However, 24 hours after its administration the patient began with fever, chills, coughing and strong malaise...
February 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28453580/-health-related-quality-of-life-in-chilean-patients-with-chronic-obstructive-pulmonary-disease
#12
Daniel Collado-Mateo, José C Adsuar, Pedro R Olivares, Miguel Ángel García-Gordillo
BACKGROUND: Chronic obstructive pulmonary disease (COPD) has a relevant impact on health-related quality of life (HRQoL). Short Form 6 dimensions (SF-6D) quality of life tool allows researchers to calculate preference-based utilities using data from SF-12 or SF-36 questionnaires. AIM: To provide normative values of SF-6D derived from SF-12 for Chilean patients with COPD. MATERIAL AND METHODS: SF-6D utility index was calculated using data from the 2009/2010 Chilean National Health Survey...
February 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28453524/peripheral-huntingtin-silencing-does-not-ameliorate-central-signs-of-disease-in-the-b6-httq111-mouse-model-of-huntington-s-disease
#13
Sydney R Coffey, Robert M Bragg, Shawn Minnig, Seth A Ament, Jeffrey P Cantle, Anne Glickenhaus, Daniel Shelnut, José M Carrillo, Dominic D Shuttleworth, Julie-Anne Rodier, Kimihiro Noguchi, C Frank Bennett, Nathan D Price, Holly B Kordasiewicz, Jeffrey B Carroll
Huntington's disease (HD) is an autosomal dominant neurodegenerative disease whose predominant neuropathological signature is the selective loss of medium spiny neurons in the striatum. Despite this selective neuropathology, the mutant protein (huntingtin) is found in virtually every cell so far studied, and, consequently, phenotypes are observed in a wide range of organ systems both inside and outside the central nervous system. We, and others, have suggested that peripheral dysfunction could contribute to the rate of progression of striatal phenotypes of HD...
2017: PloS One
https://www.readbyqxmd.com/read/28453505/breast-cancer-intra-tumor-heterogeneity-one-tumor-different-entities
#14
José Esparza-López, Elizabet Escobar-Arriaga, Santos Soto-Germes, María de Jesús Ibarra-Sánchez
In recent years, it has become evident that intra-tumor heterogeneity of breast cancer is a big challenge for the diagnosis, treatment, and clinical course of tumor-bearing patients. The advances in molecular biology and other technologies have led to the knowledge that a breast cancer tumor is comprised of multiple cellular entities. Here we review the two theories that have been described, trying to explain the origin of intra-tumor heterogeneity: clonal evolution and cancer stem cells. The first one considers that a single cell gives rise to many subpopulations through the accumulation of multiple aberrations, while the cancer stem cells theory foresees a hierarchical tumor evolution where only a few cells with self-renewal capacity give rise to different subpopulations...
March 2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28453476/reduced-cerebral-blood-flow-in-mild-cognitive-impairment-assessed-using-phase-contrast-mri
#15
Reyes García de Eulate, Irene Goñi, Alvaro Galiano, Marta Vidorreta, Miriam Recio, Mario Riverol, José L Zubieta, María A Fernández-Seara
There is increasing evidence of a vascular contribution to Alzheimer's disease (AD). In some cases, prior work suggests that chronic brain hypoperfusion could play a prime pathogenic role contributing to the accumulation of amyloid-β,while other studies favor the hypothesis that vascular dysfunction and amyloid pathology are independent, although synergistic, mechanisms contributing to cognitive impairment. Vascular dysfunction can be evaluated by assessing cerebral blood flow impairment. Phase contrast velocity mapping by MRI offers a non-invasive means of quantifying the total inflow of blood to the brain...
April 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28453451/sensitivity-for-palpating-lumbopelvic-soft-tissues-and-bony-landmarks-and-its-associated-factors-a-single-blinded-diagnostic-accuracy-study
#16
Ana Paula Antunes Ferreira, Luciana Cid Póvoa, José Fernando Cardona Zanier, Dequitier Carvalho Machado, Arthur de Sá Ferreira
BACKGROUND: Evidence on the diagnostic performance of palpatory methods and possible confounding factors is scarce. OBJECTIVES: To examine the sensitivity of palpatory methods for location of lumbopelvic landmarks and to assess its association with personal characteristics. METHODS: Eighty-three participants (41 men, 55.6 (16.5) years, 25.9 (4.8) kg/m2 [mean (SD)]) were enrolled in this single-blinded study. Fourteen body and softy-tissue landmarks were sequentially palpated from the spinous process of L4 to the ischial tuberosity...
April 21, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28453436/the-maths-of-memory
#17
Jose Borghans, Ruy M Ribeiro
Mathematical modeling reveals that long-term immunological memory is maintained in a manner that is even more dynamic than previously thought.
April 28, 2017: ELife
https://www.readbyqxmd.com/read/28453332/long-term-intermittent-exposure-to-high-altitude-elevates-asymmetric-dimethylarginine-in-first-exposed-young-adults
#18
Nicole Lüneburg, Patricia Siques, Julio Brito, Juan José De La Cruz, Fabiola León-Velarde, Juliane Hannemann, Cristian Ibanez, Rainer H Böger
Lüneburg, Nicole, Patricia Siques, Julio Brito, Juan José De La Cruz, Fabiola León-Velarde, Juliane Hannemann, Cristian Ibanez, and Rainer Böger. Long-term intermittent exposure to high altitude elevates asymmetric dimethylarginine in first exposed young adults. High Alt Med Biol 00:000-000, 2017.-Hypoxia-induced dysregulation of pulmonary and cerebral circulation may be related to an impaired nitric oxide (NO) pathway. We investigated the effect of chronic intermittent hypobaric hypoxia (CIH) on metabolites of the NO pathway...
April 28, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28453295/postinjury-exercise-and-platelet-rich-plasma-therapies-improve-skeletal-muscle-healing-in-rats-but-are-not-synergistic-when-combined
#19
Paola Contreras-Muñoz, Joan Ramon Torrella, Xavier Serres, David Rizo-Roca, Meritxell De la Varga, Ginés Viscor, Vicente Martínez-Ibáñez, José Luis Peiró, Tero A H Järvinen, Gil Rodas, Mario Marotta
BACKGROUND: Skeletal muscle injuries are the most common sports-related injury and a major concern in sports medicine. The effect of platelet-rich plasma (PRP) injections on muscle healing is still poorly understood, and current data are inconclusive. PURPOSE: To evaluate the effects of an ultrasound-guided intramuscular PRP injection, administered 24 hours after injury, and/or posttraumatic daily exercise training for 2 weeks on skeletal muscle healing in a recently established rat model of skeletal muscle injury that highly mimics the muscle trauma seen in human athletes...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28453254/gene-transfection-mediated-by-catiomers-requires-free-highly-charged-polymer-chains-to-overcome-intracellular-barriers
#20
Lindomar Jose Calumby Albuquerque, Carlos E de Castro, Karin A Riske, Maria Cristina Carlan da Silva, Paulo I R Muraro, Vanessa Schmidt Giacomelli, Cristiano Giacomelli, Fernando Carlos Carlos Giacomelli
The prospective use of the block copolymers PEO113-b-PDEA50 and POEGMA70-b-P(OEGMA10-co-DEA47-co-DPA47) as non-viral gene vectors was evaluated. The polymers are able to properly condense DNA into nano-sized particles (RH ~ 75 nm) which are marginally cytotoxic and can be uptaken by cells. However, the GFP expression assays evidenced that DNA delivery is essentially negligible meaning that intracellular trafficking hampers efficient gene release. Subsequently we demonstrate that cellular uptake and particularly the quantity of GFP-positive cells are substantially enhanced when the block copolymer polyplexes are produced and further supplemented by BPEI chains (branched polyethyleneimine)...
April 28, 2017: Biomacromolecules
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