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Roberto Romero

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https://www.readbyqxmd.com/read/28445251/long-term-follow-up-of-patients-with-chronic-hepatitis-c-treated-with-%C3%AE-interferon-and-ribavirin-antiviral-therapy-clinical-and-fibrosis-impact-of-treatment-response
#1
Patricia Cordero-Ruiz, Isabel Carmona-Soria, Manuel Rodríguez-Téllez, Angel Caunedo-Alvarez, Roberto H Quezada-Pacheco, Alexander Flores-Cucho, Manuel Romero-Gómez, Ángel Vilches-Arenas
BACKGROUND AND GOALS: The slow progression of chronic hepatitis C (CHC) infection requires long observation periods to detect clinical changes. We compare the incidence of clinical events, hepatocellular carcinoma (HCC), overall mortality, liver-related mortality, and fibrosis progression between patients with a sustained virological response (SVR) and nonresponders (NR) after a 13-year follow-up period. STUDY: One hundred and eighty-two CHC patients, who received interferon and ribavirin treatment between 1996 and 2000, were included...
April 25, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28438061/the-pattern-and-magnitude-of-invivo-thrombin-generation-differ-in-women-with-preeclampsia-and-in-those-with-sga-fetuses-without-preeclampsia
#2
Offer Erez, Roberto Romero, Edi Vaisbuch, Juan Pedro Kusanovic, Shali Mazaki-Tovi, Tinnakorn Chaiworapongsa, Francesca Gotsch, Pooja Mittal, Samuel S Edwin, Chia-Ling Nhan-Chang, Nandor Gabor Than, Chong Jai Kim, Sun Kwon Kim, Lami Yeo, Moshe Mazor, Sonia S Hassan
OBJECTIVE: We aimed to determine the differences in the pattern and magnitude of thrombin generation between patients with preeclampsia (PE) and those with SGA. METHODS: This cross-sectional study included women in the following groups: 1) normal pregnancy (NP) (n = 49); 2) PE (n = 56); and 3) SGA (n = 28). Maternal plasma thrombin generation (TGA) was measured, calculating: a) lag time (LT); b) velocity index (VI); c) peak thrombin concentration (PTC); d) time-to-peak thrombin concentration (TPTC); and e) endogenous thrombin potential (ETP)...
April 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28430766/linear-immunoglobulin-a-dermatosis-a-case-report
#3
Fernando Valenzuela Ahumada, Roberto Bustos Macaya, Gabriela Paz Romero Morgado, Margarita Sánchez Chacón
We present the case of a sixty five year old woman with two months history of pruritus and hyperpigmented annular lesions on the trunk, buttocks and upper extremities. In addition, she presents vesicles with healthy skin on the basis, in the flexor aspect of wrists. No evidence of mucosal involvement. Histological study showed subepidermal vesicular dermatitis with inflammatory infiltrate of neutrophils and eosinophils. Direct immunofluorescence evidenced linear and continuous deposition of immunoglobulin A in basement membrane zone, compatible with linear immunoglobulin A disease...
April 4, 2017: Medwave
https://www.readbyqxmd.com/read/28415906/effect-of-piplartine-and-cinnamides-on-leishmania-amazonensis-plasmodium-falciparum-and-on-peritoneal-cells-of-swiss-mice
#4
Keline Medeiros de Araújo-Vilges, Stefan Vilges de Oliveira, Shirley Claudino Pereira Couto, Harold Hilarion Fokoue, Gustavo Adolfo Sierra Romero, Massuo Jorge Kato, Luiz Antonio Soares Romeiro, José Roberto Souza Almeida Leite, Selma Aparecida Souza Kuckelhaus
CONTEXT: Plants of the Piperaceae family produce piplartine that was used to synthesize the cinnamides. OBJECTIVE: To assess the effects of piplartine (1) and cinnamides (2-5) against the protozoa responsible for malaria and leishmaniasis, and peritoneal cells of Swiss mice. MATERIALS AND METHODS: Cultures of Leishmania amazonensis, Plasmodium falciparum-infected erythrocytes, and peritoneal cells were incubated, in triplicate, with different concentrations of the compounds (0 to 256 μg/mL)...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28415207/model-of-polar-auxin-transport-coupled-to-mechanical-forces-retrieves-robust-morphogenesis-along-the-arabidopsis-root
#5
J Roberto Romero-Arias, Valeria Hernández-Hernández, Mariana Benítez, Elena R Alvarez-Buylla, Rafael A Barrio
Stem cells are identical in many scales, they share the same molecular composition, DNA, genes, and genetic networks, yet they should acquire different properties to form a functional tissue. Therefore, they must interact and get some external information from their environment, either spatial (dynamical fields) or temporal (lineage). In this paper we test to what extent coupled chemical and physical fields can underlie the cell's positional information during development. We choose the root apical meristem of Arabidopsis thaliana to model the emergence of cellular patterns...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28376638/transabdominal-collection-of-amniotic-fluid-sludge-and-identification-of-candida-albicans-intra-amniotic-infection
#6
Juan P Kusanovic, Roberto Romero, Carolina Martinovic, Karla Silva, Offer Erez, Eli Maymon, Francisco Díaz, Fernando Ferrer, Rafael Valdés, Víctor Córdova, Paula Vargas, María Elena Nilo, Patricio Le Cerf
A G3P2 patient who conceived with an intrauterine contraceptive device (IUD) presented at 20 weeks of gestation with mild irregular uterine contractions and vaginal bleeding. Sonographic examination at admission showed the presence of dense amniotic fluid "sludge" and a long sonographic uterine cervix (42 mms). To assess the microbiologic significance of amniotic fluid "sludge", we performed a transabdominal amniocentesis. The procedure was performed under real-time ultrasound, and fluid resembling pus at gross examination was noted...
April 5, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28369855/in-vivo-activation-of-invariant-natural-killer-t-cells-induces-systemic-and-local-alterations-in-t-cell-subsets-prior-to-preterm-birth
#7
Nardhy Gomez-Lopez, Roberto Romero, Marcia Arenas-Hernandez, George Schwenkel, Derek St Louis, Sonia S Hassan, Tara N Mial
Preterm birth, the leading cause of neonatal morbidity and mortality worldwide, is frequently preceded by spontaneous preterm labor, a syndrome of multiple etiologies. Pathological inflammation is causally linked to spontaneous preterm labor. Indeed, direct activation of invariant natural killer T (iNKT) cells via α-galactosylceramide induces preterm labor/birth largely by initiating systemic and local (i.e., decidua and myometrium) innate immune responses. Herein, we investigated whether iNKT-cell activation altered local and systemic T-cell subsets...
April 2, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28346524/rare-mutations-and-potentially-damaging-missense-variants-in-genes-encoding-fibrillar-collagens-and-proteins-involved-in-their-production-are-candidates-for-risk-for-preterm-premature-rupture-of-membranes
#8
Bhavi P Modi, Maria E Teves, Laurel N Pearson, Hardik I Parikh, Piya Chaemsaithong, Nihar U Sheth, Timothy P York, Roberto Romero, Jerome F Strauss
Preterm premature rupture of membranes (PPROM) is the leading identifiable cause of preterm birth with ~ 40% of preterm births being associated with PPROM and occurs in 1% - 2% of all pregnancies. We hypothesized that multiple rare variants in fetal genes involved in extracellular matrix synthesis would associate with PPROM, based on the assumption that impaired elaboration of matrix proteins would reduce fetal membrane tensile strength, predisposing to unscheduled rupture. We performed whole exome sequencing (WES) on neonatal DNA derived from pregnancies complicated by PPROM (49 cases) and healthy term deliveries (20 controls) to identify candidate mutations/variants...
2017: PloS One
https://www.readbyqxmd.com/read/28342715/prediction-of-neonatal-respiratory-morbidity-by-quantitative-ultrasound-lung-texture-analysis-a-multicenter-study
#9
Montse Palacio, Elisenda Bonet-Carne, Teresa Cobo, Alvaro Perez-Moreno, Joan Sabrià, Jute Richter, Marian Kacerovsky, Bo Jacobsson, Raúl A García-Posada, Fernando Bugatto, Ramon Santisteve, Àngels Vives, Mauro Parra-Cordero, Edgar Hernandez-Andrade, José Luis Bartha, Pilar Carretero-Lucena, Kai Lit Tan, Rogelio Cruz-Martínez, Minke Burke, Suseela Vavilala, Igor Iruretagoyena, Juan Luis Delgado, Mauro Schenone, Josep Vilanova, Francesc Botet, George S H Yeo, Jon Hyett, Jan Deprest, Roberto Romero, Eduard Gratacos
BACKGROUND: Prediction of neonatal respiratory morbidity may be useful to plan delivery in complicated pregnancies. The limited predictive performance of the current diagnostic tests together with the risks of an invasive procedure limits the use of fetal lung maturity assessment. OBJECTIVE: The objective of the study was to evaluate the performance of quantitative ultrasound texture analysis (quantusFLM) to predict neonatal respiratory morbidity in preterm and early-term (<39...
March 23, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28334019/cell-survival-and-differentiation-with-nanocrystalline-glass-like-carbon-using-substantia-nigra-dopaminergic-cells-derived-from-transgenic-mouse-embryos
#10
Noela Rodriguez-Losada, Pablo Romero, Guillermo Estivill-Torrús, Roberto Guzmán de Villoria, Jose A Aguirre
Regenerative medicine requires, in many cases, physical supports to facilitate appropriate cellular architecture, cell polarization and the improvement of the correct differentiation processes of embryonic stem cells, induced pluripotent cells or adult cells. Because the interest in carbon nanomaterials has grown within the last decade in light of a wide variety of applications, the aim of this study was to test and evaluate the suitability and cytocompatibility of a particular nanometer-thin nanocrystalline glass-like carbon film (NGLC) composed of curved graphene flakes joined by an amorphous carbon matrix...
2017: PloS One
https://www.readbyqxmd.com/read/28329793/oral-disease-and-3-year-incidence-of-frailty-in-mexican-older-adults
#11
Roberto Carlos Castrejón-Pérez, Aida Jiménez-Corona, Eduardo Bernabé, Antonio R Villa-Romero, Elise Arrivé, Jean-François Dartigues, Luis Miguel Gutiérrez-Robledo, S Aída Borges-Yáñez
Background: Poor oral health has been associated with some components of frailty. The objective of this study was to identify the association between clinical measures of oral health and the incidence of frailty among community-dwelling older adults aged 70 or older in Mexico City. Methods: A 3-year cohort study with a probabilistic representative sample of home-dwelling elders of one district of Mexico City was performed. Baseline and follow-up interview and oral clinical evaluations were carried out by standardized examiners in participants' homes...
October 25, 2016: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28303450/dr%C3%AE-1-mog-35-55-treatment-reduces-lesion-volumes-and-improves-neurological-deficits-after-traumatic-brain-injury
#12
Liu Yang, Zhijia Liu, Honglei Ren, Lei Zhang, Siman Gao, Li Ren, Zhi Chai, Roberto Meza-Romero, Gil Benedek, Arthur A Vandenbark, Halina Offner, Minshu Li
Traumatic brain injury (TBI) results in severe neurological impairments without effective treatments. Inflammation appears to be an important contributor to key pathogenic events such as secondary brain injury following TBI and therefore serves as a promising target for novel therapies. We have recently demonstrated the ability of a molecular construct comprised of the human leukocyte antigen (HLA)-DRα1 domain linked covalently to mouse (m)MOG-35-55 peptide (DRα1-MOG-35-55 construct) to reduce CNS inflammation and tissue injury in animal models of multiple sclerosis and ischemic stroke...
March 16, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28277911/fetal-growth-pathology-score-a-novel-ultrasound-parameter-for-individualized-assessment-of-third-trimester-growth-abnormalities
#13
Russell L Deter, Wesley Lee, John C P Kingdom, Roberto Romero
OBJECTIVES: To study fetal growth in pregnancies at risk for growth restriction using, for the first time, the Fetal Growth Pathology Score [FGPS1]. METHODS: A retrospective cohort study of growth restriction [GR] was carried out in 184 selected SGA singletons using a novel, composite measure of growth abnormalities termed the FGPS1. Serial fetal biometry was used to establish 2(nd) trimester Rossavik size models and determine FGPS1 values prior to delivery. FGPS1 data were compared to neonatal growth outcomes assessed using Growth Potential Realization Index [GPRI] values [average negative pathological GPRI {av -pGPRI}]...
March 1, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28264970/cutting-edge-fetal-placental-type-i-ifn-can-affect-maternal-survival-and-fetal-viral-load-during-viral-infection
#14
Karen Racicot, Paulomi Aldo, Ayman El-Guindy, Ja-Young Kwon, Roberto Romero, Gil Mor
Pregnant women have greater mortality and complications associated with viral infections compared with the general population, but the reason for the increased susceptibility is not well defined. Placenta type I IFN is an important immune modulator and protects the pregnancy. We hypothesized that loss of placental IFN affects the regulation of the maternal immune system, resulting in the differential response to infections observed in pregnancy. Pregnant mice lacking the IFN-α/β receptor (IFNAR) became viremic and had higher mortality compared with nonpregnant animals...
March 6, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28263753/the-maternal-plasma-proteome-changes-as-a-function-of-gestational-age-in-normal-pregnancy-a-longitudinal-study
#15
Roberto Romero, Offer Erez, Eli Maymon, Piya Chaemsaithong, Zhonghui Xu, Percy Pacora, Tinnakorn Chaiworapongsa, Bogdan Done, Sonia S Hassan, Adi L Tarca
OBJECTIVE: Pregnancy is accompanied by dramatic physiological changes in maternal plasma proteins. Characterization of the maternal plasma proteome in normal pregnancy is an essential step for understanding changes to predict pregnancy outcome. The objective of this study was to describe maternal plasma proteins that change in abundance with advancing gestational age and determine biological processes that are perturbed in normal pregnancy. STUDY DESIGN: A longitudinal study included 43 normal pregnancies that had a term delivery of an infant who was appropriate for gestational age without maternal or neonatal complications...
March 3, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28257964/twenty-four-percent-of-patients-with-clinical-chorioamnionitis-in-preterm-gestations-have-no-evidence-of%C3%A2-either-culture-proven-intraamniotic-infection-or%C3%A2-intraamniotic-inflammation
#16
Kyung Joon Oh, Sun Min Kim, Joon-Seok Hong, Eli Maymon, Offer Erez, Bogdan Panaitescu, Nardhy Gomez-Lopez, Roberto Romero, Bo Hyun Yoon
BACKGROUND: Recent studies on clinical chorioamnionitis at term suggest that some patients with this diagnosis have neither intraamniotic infection nor intraamniotic inflammation. A false-positive diagnosis of clinical chorioamnionitis in preterm gestation may lead to unwarranted preterm delivery. OBJECTIVE: We sought to determine the frequency of intraamniotic inflammation and microbiologically proven amniotic fluid infection in patients with preterm clinical chorioamnionitis...
February 28, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28237037/the-effect-size-of-type-2-diabetes-mellitus-on-tuberculosis-drug-resistance-and-adverse-treatment-outcomes
#17
Lucia Monserrat Perez-Navarro, Blanca I Restrepo, Francisco Javier Fuentes-Dominguez, Ravindranath Duggirala, Jaime Morales-Romero, Juan Carlos López-Alvarenga, Iñaki Comas, Roberto Zenteno-Cuevas
OBJECTIVE: To evaluate the effect size of type 2 diabetes mellitus (T2DM) on tuberculosis (TB) treatment outcomes and multi drug resistance (MDR). METHODS: A cohort with 507 individuals with diagnosed TB included 183 with coexistence of T2DM and TB (TB-T2DM). Participants were identified at the time of TB diagnosis and followed during the course of TB treatment. Then we computed relative risks and adjustments by Cox proportional hazards for outcome variables (drug resistance, death, relapse, treatment failure), and the size of their effect as Cohen's-d...
March 2017: Tuberculosis
https://www.readbyqxmd.com/read/28226203/characteristic-changes-in-decidual-gene-expression-signature-in-spontaneous-term-parturition
#18
Haidy El-Azzamy, Andrea Balogh, Roberto Romero, Yi Xu, Christopher LaJeunesse, Olesya Plazyo, Zhonghui Xu, Theodore G Price, Zhong Dong, Adi L Tarca, Zoltan Papp, Sonia S Hassan, Tinnakorn Chaiworapongsa, Chong Jai Kim, Nardhy Gomez-Lopez, Nandor Gabor Than
Background: The decidua has been implicated in the "terminal pathway" of human term parturition, which is characterized by the activation of pro-inflammatory pathways in gestational tissues. However, the transcriptomic changes in the decidua leading to terminal pathway activation have not been systematically explored. This study aimed to compare the decidual expression of developmental signaling and inflammation-related genes before and after spontaneous term labor in order to reveal their involvement in this process...
February 22, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28206876/sample-treatment-in-pesticide-residue-determination-in-food-by-high-resolution-mass-spectrometry-are-generic-extraction-methods-the-end-of-the-road
#19
Roberto Romero-González, Francisco Javier Arrebola Liébanas, Rosalía López-Ruiz, Antonia Garrido Frenich
The use of high-resolution MS (HRMS) is becoming popular in laboratories for the determination of pesticide residues in food commodities. The recent improvements in the instrumentation have helped to increase the number of active compounds and transformation products that can be monitored within a simple chromatographic run. However, prior to instrumental determination, it is necessary to perform a nonspecific, or generic, sample treatment that allows the efficient extraction of several compounds with very relevant differences in their physical and chemical properties...
November 1, 2016: Journal of AOAC International
https://www.readbyqxmd.com/read/28160742/determination-of-rodenticides-and-related-metabolites-in-rabbit-liver-and-biological-matrices-by-liquid-chromatography-coupled-to-orbitrap-high-resolution-mass-spectrometry
#20
Marina López-García, Roberto Romero-González, Antonia Garrido Frenich
An analytical method based on ultra-high performance liquid chromatography (UHPLC) coupled to Orbitrap high resolution mass spectrometry was developed for the determination of rodenticides (bromadiolone, brodifacoum, difenacoum, chlorophacinone, diphacinone, coumachlor and warfarin) in liver matrix. Different extraction conditions were tested, obtaining the best results when the "dilute and shoot" method (acidified acetonitrile as extraction solvent) and a clean-up step with primary secondary amine (PSA) were used...
January 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
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