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https://www.readbyqxmd.com/read/28219340/very-high-mhc-class-iib-diversity-without-spatial-differentiation-in-the-mediterranean-population-of-greater-flamingos
#1
Mark A F Gillingham, Arnaud Béchet, Alexandre Courtiol, Manuel Rendón-Martos, Juan A Amat, Boudjéma Samraoui, Ortaç Onmuş, Simone Sommer, Frank Cézilly
BACKGROUND: Selective pressure from pathogens is thought to shape the allelic diversity of major histocompatibility complex (MHC) genes in vertebrates. In particular, both local adaptation to pathogens and gene flow are thought to explain a large part of the intraspecific variation observed in MHC allelic diversity. To date, however, evidence that adaptation to locally prevalent pathogens maintains MHC variation is limited to species with limited dispersal and, hence, reduced gene flow...
February 20, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28215848/erratum-to-the-natural-history-of-renal-function-after-surgical-management-of-renal-cell-carcinoma-results-from-the-canadian-kidney-cancer-information-system-urol-oncol-34-11-2016-486-e1-486-e7
#2
Ross Mason, Anil Kapoor, Zhihui Liu, Olli Saarela, Simon Tanguay, Michael Jewett, Antonio Finelli, Louis Lacombe, Jun Kawakami, Ronald Moore, Christopher Morash, Peter Black, Ricardo A Rendon
No abstract text is available yet for this article.
March 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28214742/what-s-the-agreement-between-self-reported-and-biochemical-verification-of-drug-use-a-look-at-permanent-supportive-housing-residents
#3
Alexis Rendon, Melvin Livingston, Sumihiro Suzuki, Whitney Hill, Scott Walters
Self-reported substance use is commonly used as an outcome measure in treatment research. We evaluated the validity of self-reported drug use in a sample of 334 adults with mental health problems who were residing in supportive housing programs. The primary analysis was the calculation of the positive predictive values (PPVs) of self-report compared to an oral fluid test taken at the same time. A sensitivity analysis compared the positive predictive values of two self-reported drug use histories: biological testing window (ranging between the past 96h to 30days depending on drug type) or the full past 90-day comparison window (maximum length recorded during interview)...
February 10, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28208651/the-architecture-of-thiol-antioxidant-systems-among-invertebrate-parasites
#4
Alberto Guevara-Flores, José de Jesús Martínez-González, Juan Luis Rendón, Irene Patricia Del Arenal
The use of oxygen as the final electron acceptor in aerobic organisms results in an improvement in the energy metabolism. However, as a byproduct of the aerobic metabolism, reactive oxygen species are produced, leaving to the potential risk of an oxidative stress. To contend with such harmful compounds, living organisms have evolved antioxidant strategies. In this sense, the thiol-dependent antioxidant defense systems play a central role. In all cases, cysteine constitutes the major building block on which such systems are constructed, being present in redox substrates such as glutathione, thioredoxin, and trypanothione, as well as at the catalytic site of a variety of reductases and peroxidases...
February 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28205586/corrigendum-a-liposomal-gd-contrast-agent-does-not-cross-the-mouse-placental-barrier
#5
Anil N Shetty, Robia Pautler, Ketan Ghaghada, David Rendon, Haijun Gao, Zbigniew Starosolski, Rohan Bhavane, Chandreshkumar Patel, Ananth Annapragada, Chandrasekhar Yallampalli, Wesley Lee
No abstract text is available yet for this article.
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205406/potency-of-human-cardiosphere-derived-cells-from-patients-with-ischemic-heart-disease-is-associated-with-robust-vascular-supportive-ability
#6
Emma Harvey, Huajun Zhang, Pilar Sepúlveda, Sara P Garcia, Dominic Sweeney, Fizzah A Choudry, Delia Castellano, George N Thomas, Hassan Kattach, Romina Petersen, Derek J Blake, David P Taggart, Mattia Frontini, Suzanne M Watt, Enca Martin-Rendon
Cardiosphere-derived cell (CDC) infusion into damaged myocardium has shown some reparative effect; this could be improved by better selection of patients and cell subtype. CDCs isolated from patients with ischemic heart disease are able to support vessel formation in vitro but this ability varies between patients. The primary aim of our study was to investigate whether the vascular supportive function of CDCs impacts on their therapeutic potential, with the goal of improving patient stratification. A subgroup of patients produced CDCs which did not efficiently support vessel formation (poor supporter CDCs), had reduced levels of proliferation and increased senescence, despite them being isolated in the same manner and having a similar immunophenotype to CDCs able to support vessel formation...
February 16, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28161439/lipid-signaling-and-fat-storage-in-the-dark-eyed-junco
#7
Jacqueline M Ho, Christine M Bergeon Burns, Nikki M Rendon, Kimberly A Rosvall, Heather B Bradshaw, Ellen D Ketterson, Gregory E Demas
Seasonal hyperphagia and fattening promote survivorship in migratory and wintering birds, but reduced adiposity may be more advantageous during the breeding season. Factors such as photoperiod, temperature, and food predictability are known environmental determinants of fat storage, but the underlying neuroendocrine mechanisms are less clear. Endocannabinoids and other lipid signaling molecules regulate multiple aspects of energy balance including appetite and lipid metabolism. However, these functions have been established primarily in mammals; thus the role of lipid signals in avian fat storage remains largely undefined...
February 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28159978/protection-of-glial-m%C3%A3-ller-cells-by-dexamethasone-in-a-mouse-model-of-surgically-induced-blood-retinal-barrier-breakdown
#8
Lourdes Siqueiros-Marquez, Romain Bénard, Ophélie Vacca, Hugo Charles-Messance, Rodrigo Bolaños-Jimenez, Xavier Guilloneau, Florian Sennlaub, Cecilia Montañez, José Alain Sahel, Alvaro Rendon, Ramin Tadayoni, Audrey Giocanti-Aurégan
Purpose: Breakdown of the inner blood-retinal barrier (iBRB) occurs in many retinal disorders and may cause retinal edema often responsible for vision loss. Dexamethasone is used in clinical practice to restore iBRB. The aim of this study was to characterize the impact of a surgically induced iBRB breakdown on retinal homeostatic changes due to dystrophin Dp71, aquaporin-4 (AQP4), and Kir4.1 alterations in Müller glial cells (MGC) in a mouse model. The protective effect of dexamethasone was assessed in this model...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28127699/dystrophin-dp71-isoforms-are-differentially-expressed-in-the-mouse-brain-and-retina-report-of-new-alternative-splicing-and-a-novel-nomenclature-for-dp71-isoforms
#9
Jorge Aragón, Mayram González-Reyes, José Romo-Yáñez, Ophélie Vacca, Guadalupe Aguilar-González, Alvaro Rendón, Cyrille Vaillend, Cecilia Montañez
Multiple dystrophin Dp71 isoforms have been identified in rats, mice, and humans and in several cell line models. These Dp71 isoforms are produced by the alternative splicing of exons 71 to 74 and 78 and intron 77. Three main groups of Dp71 proteins are defined based on their C-terminal specificities: Dp71d, Dp71f, and Dp71e. Dp71 is highly expressed in the brain and retina; however, the specific isoforms present in these tissues have not been determined to date. In this work, we explored the expression of Dp71 isoforms in the mouse brain and retina using RT-PCR assays followed by the cloning of PCR products into the pGEM-T Easy vector, which was used to transform DH5α cells...
January 27, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28116837/bacterial-nanocellulose-magnetically-functionalized-for-neuro-endovascular-treatment
#10
Mónica Echeverry-Rendon, Lisa M Reece, Fernando Pastrana, Sandra L Arias, Akshath R Shetty, Juan Jose Pavón, Jean Paul Allain
Current treatments for brain aneurysms are invasive, traumatic, and not suitable in most patients with increased risks. A new alternative method is using scaffold stents to create a local and focal attraction force of cells for an in situ reconstruction of the tunica media. For this purpose, a nanostructured bioactive coating is designed to render an asymmetric region of the stent scaffold magnetic and biomimetic, which utilizes bacterial nanocellulose (BNC) as a platform for both magnetic and cell attraction as well as proliferation...
January 24, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28109838/developmental-changes-and-day-night-expression-of-the-gonadotropin-inhibitory-hormone-system-in-the-european-sea-bass-effects-of-rearing-temperature
#11
José A Paullada-Salmerón, Guillaume Henri Loentgen, Mairi Cowan, María Aliaga-Guerrero, María Del Carmen Rendón-Unceta, José A Muñoz-Cueto
The role of rearing temperature on fish development, sex differentiation and puberty has been largely addressed, but the impact of water temperature on the ontogeny of the main neuroendocrine systems controlling reproduction has received little attention. Gonadotropin-inhibitory hormone (GnIH) has been shown to act on gonadotropin-releasing hormone (GnRH) neurons and on the pituitary to inhibit gonadotropin release and synthesis in vertebrates, including sea bass, Dicentrarchus labrax. In the present study we investigated the effects of rearing temperature during the thermosensitive period (5-60days post-fertilization, dpf) on the expression of the GnIH gene (gnih) and its receptor (gnihr)...
January 18, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28095558/clinical-evaluation-of-a-4-hydroquinone-1-retinol-treatment-regimen-for-improving-melasma-and-photodamage-in-fitzpatrick-skin-types-iii-vi
#12
Marta I Rendon, Sylvia Barkovic
The bene ts of monotherapy with hydroquinone for melasma and retinoids for photodamaged skin is well established. Here we report results of a hydroquinone skincare regimen designed for melasma treatment combined with a cosmetic retinol cream on subjects presenting with both melasma and facial photodamage in a 24-week study. Improvement in melasma and photodamage ef cacy pa- rameters of melasma pigmentation intensity and melasma area and severity index (MASI), as well as overall photodamage and mottled hyperpigmentation were found by week 4, the rst post-baseline time point...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28092496/the-effect-of-contrast-material-on-radiation-dose-at-ct-part-i-incorporation-of-contrast-material-dynamics-in-anthropomorphic-phantoms
#13
Pooyan Sahbaee, W Paul Segars, Daniele Marin, Rendon C Nelson, Ehsan Samei
Purpose To develop a method to incorporate the propagation of contrast material into computational anthropomorphic phantoms for estimation of organ dose at computed tomography (CT). Materials and Methods A patient-specific physiologically based pharmacokinetic (PBPK) model of the human cardiovascular system was incorporated into 58 extended cardiac-torso (XCAT) patient phantoms. The PBPK model comprised compartmental models of vessels and organs unique to each XCAT model. For typical injection protocols, the dynamics of the contrast material in the body were described according to a series of patient-specific iodine mass-balance differential equations, the solutions to which provided the contrast material concentration time curves for each compartment...
January 13, 2017: Radiology
https://www.readbyqxmd.com/read/28088221/role-of-pelvic-and-para-aortic-lymphadenectomy-in-abandoned-radical-hysterectomy-in-cervical-cancer
#14
Salim Abraham Barquet-Muñoz, Gabriel Jaime Rendón-Pereira, Denise Acuña-González, Monica Vanessa Heymann Peñate, Luis Alonso Herrera-Montalvo, Lenny Nadia Gallardo-Alvarado, David Francisco Cantú-de León, René Pareja
BACKGROUND: Cervical cancer (CC) occupies fourth place in cancer incidence and mortality worldwide in women, with 560,505 new cases and 284,923 deaths per year. Approximately, nine of every ten (87%) take place in developing countries. When a macroscopic nodal involvement is discovered during a radical hysterectomy (RH), there is controversy in the literature between resect macroscopic lymph node compromise or abandonment of the surgery and sending the patient for standard chemo-radiotherapy treatment...
January 14, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28077180/understanding-transmissibility-patterns-of-chagas-disease-through-complex-vector-host-networks
#15
Laura Rengifo-Correa, Christopher R Stephens, Juan J Morrone, Juan Luis Téllez-Rendón, Constantino González-Salazar
Chagas disease is one of the most important vector-borne zoonotic diseases in Latin America. Control strategies could be improved if transmissibility patterns of its aetiologic agent, Trypanosoma cruzi, were better understood. To understand transmissibility patterns of Chagas disease in Mexico, we inferred potential vectors and hosts of T. cruzi from geographic distributions of nine species of Triatominae and 396 wild mammal species, respectively. The most probable vectors and hosts of T. cruzi were represented in a Complex Inference Network, from which we formulated a predictive model and several associated hypotheses about the ecological epidemiology of Chagas disease...
January 12, 2017: Parasitology
https://www.readbyqxmd.com/read/28074306/second-and-thirdhand-smoke-exposure-attitudes-and-protective-practices-results-from-a-survey-of-hispanic-residents-in-multi-unit-housing
#16
Angelica Delgado-Rendon, Tess Boley Cruz, Daniel Soto, Lourdes Baezconde-Garbanati, Jennifer B Unger
Secondhand and third hand smoke (SHS, THS) exposure is prevalent in multi-unit housing (MUH). Minorities and low-income MUH residents are disproportionally exposed to SHS and THS compared to other populations. This study describes the characteristics, attitudes, knowledge, and behaviors related to SHS, THS and marijuana smoke exposure (MSHS) of a sample of Hispanic tenants in randomly selected MUH units in eastern metro Los Angeles (n = 402). Although most participants (97%) banned smoking inside their homes, 80% reported infiltration of SHS inside their apartments within the last year...
January 10, 2017: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/28065393/quality-indicators-in-the-management-of-bladder-cancer-a-modified-delphi-study
#17
Satya R Khare, Armen Aprikian, Peter Black, Normand Blais, Chris Booth, Fadi Brimo, Joseph Chin, Peter Chung, Darrel Drachenberg, Libni Eapen, Adrian Fairey, Neil Fleshner, Yves Fradet, Geoffrey Gotto, Jonathan Izawa, Michael Jewett, Girish Kulkarni, Louis Lacombe, Ron Moore, Chris Morash, Scott North, Ricardo Rendon, Fred Saad, Bobby Shayegan, Robert Siemens, Alan So, Srikala S Sridhar, Samer L Traboulsi, Wassim Kassouf
BACKGROUND: Survival in patients with bladder cancer has only moderately improved over the past 2 decades. A potential reason for this is nonadherence to clinical guidelines and best practice, leading to wide variations in care. Common quality indicators (QIs) are needed to quantify adherence to best practice and provide data for benchmarking and quality improvement. OBJECTIVE: To produce an evidence- and consensus-based list of QIs for the management of bladder cancer...
January 3, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28056072/clarifying-the-cryptic-host-specificity-of-blastocystis-spp-isolates-from-alouatta-palliata-and-a-pigra-howler-monkeys
#18
Claudia Villanueva-Garcia, Elias Jose Gordillo-Chavez, Eduardo Lopez-Escamilla, Emilio Rendon-Franco, Claudia Irais Muñoz-Garcia, Lilia Gama, Williams Arony Martinez-Flores, Nayeli Gonzalez-Rodriguez, Mirza Romero-Valdovinos, Hilda Diaz-Lopez, Jose Galian, Guiehdani Villalobos, Pablo Maravilla, Fernando Martinez-Hernandez
Although the presence of cryptic host specificity has been documented in Blastocystis, differences in infection rates and high genetic polymorphism within and between populations of some subtypes (ST) have impeded the clarification of the generalist or specialist specificity of this parasite. We assessed the genetic variability and host specificity of Blastocystis spp. in wild howler monkeys from two rainforest areas in the southeastern region of Mexico. Fecal samples of 225 Alouatta palliata (59) and A. pigra (166) monkeys, belonging to 16 sylvatic sites, were analyzed for infection with Blastocystis ST using a region of the small subunit rDNA (SSUrDNA) gene as a marker...
2017: PloS One
https://www.readbyqxmd.com/read/28052129/imaging-radiation-induced-gastrointestinal-bone-marrow-injury-and-recovery-kinetics-using-18f-fdg-pet
#19
Tien T Tang, David A Rendon, Janice A Zawaski, Solmaz F Afshar, Caterina K Kaffes, Omaima M Sabek, M Waleed Gaber
Positron emission tomography using 18F-Fluro-deoxy-glucose (18F-FDG) is a useful tool to detect regions of inflammation in patients. We utilized this imaging technique to investigate the kinetics of gastrointestinal recovery after radiation exposure and the role of bone marrow in the recovery process. Male Sprague-Dawley rats were either sham irradiated, irradiated with their upper half body shielded (UHBS) at a dose of 7.5 Gy, or whole body irradiated (WBI) with 4 or 7.5 Gy. Animals were imaged using 18F-FDG PET/CT at 5, 10 and 35 days post-radiation exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28025743/relationship-between-organochlorine-pesticides-and-stress-indicators-in-hawksbill-sea-turtle-eretmochelys-imbricata-nesting-at-punta-xen-campeche-southern-gulf-of-mexico
#20
Nelly Tremblay, Alejandro Ortíz Arana, Mauricio González Jáuregui, Jaime Rendón-von Osten
Data on the impact of environmental pollution on the homeostasis of sea turtles remains scarce, particularly in the Southern Gulf of Mexico. As many municipalities along the coastline of the Yucatan Peninsula do not rely on a waste treatment plant, these organisms could be particularly vulnerable. We searched for relationships between the presence of organochlorine pesticides (OCP) and the level of several oxidative and pollutant stress indicators of the hawksbill sea turtle (Eretmochelys imbricata) during the 2010 nesting season at Punta Xen (Campeche, Mexico)...
December 26, 2016: Ecotoxicology
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