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Roberto Romero

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https://www.readbyqxmd.com/read/27888998/jay-d-iams-md-ajog-editor
#1
EDITORIAL
Roberto Romero, Ingrid Nygaard
No abstract text is available yet for this article.
December 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27884950/neutrophil-extracellular-traps-in-the-amniotic-cavity-of-women-with-intra-amniotic-infection-a-new-mechanism-of-host-defense
#2
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Ronald Unkel, Majid Shaman, Suzanne M Jacques, Bogdan Panaitescu, Valeria Garcia-Flores, Sonia S Hassan
OBJECTIVE: Neutrophil extracellular traps (NETs) control microbial infections through their antimicrobial activities attributed to DNA, histones, granules, and cytoplasmic proteins (eg, elastase). Intra-amniotic infection is characterized by the influx of neutrophils into the amniotic cavity; therefore, the aim of this study was to determine whether amniotic fluid neutrophils form NETs in this inflammatory process. METHODS: Amniotic fluid samples from women with intra-amniotic infection (n = 15) were stained for bacteria detection using fluorescent dyes...
November 23, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27881142/ethnoagroforestry-integration-of-biocultural-diversity-for-food-sovereignty-in-mexico
#3
Ana Isabel Moreno-Calles, Alejandro Casas, Alexis Daniela Rivero-Romero, Yessica Angélica Romero-Bautista, Selene Rangel-Landa, Roberto Alexander Fisher-Ortíz, Fernando Alvarado-Ramos, Mariana Vallejo-Ramos, Dídac Santos-Fita
BACKGROUND: Documenting the spectrum of ecosystem management, the roles of forestry and agricultural biodiversity, TEK, and human culture for food sovereignty, are all priority challenges for contemporary science and society. Ethnoagroforestry is a research approach that provides a theoretical framework integrating socio-ecological disciplines and TEK. We analyze in this study general types of Agroforestry Systems of México, in which peasants, small agriculturalist, and indigenous people are the main drivers of AFS and planning of landscape diversity use...
November 23, 2016: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/27852921/a-role-for-the-inflammasome-in-spontaneous-labor-at-term-with-acute-histologic-chorioamnionitis
#4
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Olesya Plazyo, Ronald Unkel, Nandor Gabor Than, Piya Chaemsaithong, Tinnakorn Chaiworapongsa, Zhong Dong, Adi L Tarca, Vikki M Abrahams, Lami Yeo, Sonia S Hassan
Inflammasomes are cytosolic signaling platforms that regulate the activation of caspase (CASP)-1, which induces the maturation of interleukin (IL)-1β and IL-18. Herein, we determined whether the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis express major inflammasome components and whether these changes are associated with the activation of CASP-1 and CASP-4 and the release of mature IL-1β and IL-18. When comparing the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis to those without this placental lesion, we found that (1) the messenger RNA (mRNA) abundance of NLR family pyrin domain containing 3 (NLRP3), NLR family CARD domain containing 4 (NLRC4), absent in melanoma 2 (AIM2), and nucleotide binding oligomerization domain 2 (NOD2) was higher; (2) the NLRP3 and NLRC4 protein quantities were increased; (3) the mRNA and protein expressions of CASP-1 and its active forms were greater; (4) CASP-4 was increased at the mRNA level only; (5) the mRNA and protein expressions of IL-1β and its mature form were higher; and (6) a modest increase in the total protein concentration and abundance of the mature form of IL-18 was observed...
November 16, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27852270/inequalities-in-healthy-life-expectancy-by-brazilian-geographic-regions-findings-from-the-national-health-survey-2013
#5
Célia Landmann Szwarcwald, Paulo Roberto Borges de Souza Júnior, Aline Pinto Marques, Wanessa da Silva de Almeida, Dalia Elena Romero Montilla
BACKGROUND: The demographic shift and epidemiologic transition in Brazil have drawn attention to ways of measuring population health that complement studies of mortality. In this paper, we investigate regional differences in healthy life expectancy based on information from the National Health Survey (PNS), 2013. METHODS: In the survey, a three-stage cluster sampling (census tracts, households and individuals) with stratification of the primary sampling units and random selection in all stages was used to select 60,202 Brazilian adults (18 years and over)...
November 17, 2016: International Journal for Equity in Health
https://www.readbyqxmd.com/read/27806943/hmgb1-induces-an-inflammatory-response-in-the-chorioamniotic-membranes-that-is-partially-mediated-by-the-inflammasome
#6
Olesya Plazyo, Roberto Romero, Ronald Unkel, Amapola Balancio, Tara N Mial, Yi Xu, Zhong Dong, Sonia S Hassan, Nardhy Gomez-Lopez
Spontaneous preterm labor occurs in two subsets of patients with sterile intra-amniotic inflammation, which is induced by alarmins such as high-mobility group box-1 (HMGB1). Inflammasomes are also implicated in the process of spontaneous preterm labor with acute chorioamnionitis. Therefore, we investigated whether HMGB1 initiates an inflammasome-associated inflammatory response in the chorioamniotic membranes. Incubation of the chorioamniotic membranes with HMGB1: 1) induced the release of mature IL-1beta and IL-6; 2) upregulated the mRNA expression of the pro-inflammatory mediators NFKB1, IL6, TNF, IL1A, IFNG, and HMGB1 receptors RAGE and TLR2; 3) upregulated the mRNA expression of the inflammasome components NLRP3 and AIM2, and NOD proteins (NOD1 and NOD2); 4) increased the protein concentrations of NLRP3 and NOD2; 5) increased the concentration of caspase-1 and the quantity of its active form (p20); and 6) upregulated the mRNA expression and active form of MMP-9...
November 2, 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27802270/single-and-serial-fetal-biometry-to-detect-preterm-and-term-small-and-large-for-gestational-age-neonates-a-longitudinal-cohort-study
#7
Adi L Tarca, Edgar Hernandez-Andrade, Hyunyoung Ahn, Maynor Garcia, Zhonghui Xu, Steven J Korzeniewski, Homam Saker, Tinnakorn Chaiworapongsa, Sonia S Hassan, Lami Yeo, Roberto Romero
OBJECTIVES: To assess the value of single and serial fetal biometry for the prediction of small- (SGA) and large-for-gestational-age (LGA) neonates delivered preterm or at term. METHODS: A cohort study of 3,971 women with singleton pregnancies was conducted from the first trimester until delivery with 3,440 pregnancies (17,334 scans) meeting the following inclusion criteria: 1) delivery of a live neonate after 33 gestational weeks and 2) two or more ultrasound examinations with fetal biometry parameters obtained at ≤36 weeks...
2016: PloS One
https://www.readbyqxmd.com/read/27773388/enantiomeric-determination-and-evaluation-of-the-racemization-process-of-atropine-in-solanaceae-seeds-and-contaminated-samples-by-high-performance-liquid-chromatography-tandem-mass-spectrometry
#8
Jesús Marín-Sáez, Roberto Romero-González, Antonia Garrido Frenich
A new method has been developed for the enantioselective separation of (-) and (+) hyoscyamine in Solanaceaes seeds and contaminated buckwheat. Chromatographic separation was optimized, evaluating two chiral columns, Chirobiotic V and Chiralpal-AY3. Better resolution was obtained using a Chiralpak-AY3 column, utilizing as mobile phase ethanol (0.1% diethanolamine). An extraction procedure based on a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) was applied, using water and acetonitrile containing 1% of acetic acid, and a clean-up step utilizing primary secondary amine (PSA) and graphitized carbon black (GCB) as sorbents...
October 19, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27763883/clinical-chorioamnionitis-at-term-vii-the-amniotic-fluid-cellular-immune-response
#9
Alicia Martinez-Varea, Roberto Romero, Yi Xu, Derek Miller, Ahmed I Ahmed, Piya Chaemsaithong, Noppadol Chaiyasit, Lami Yeo, Majid Shaman, Kia Lannaman, Benjamin Cher, Sonia S Hassan, Nardhy Gomez-Lopez
OBJECTIVES: 1) To characterize the cellular composition of the amniotic fluid of patients diagnosed with clinical chorioamnionitis at term, as a function of the presence or absence of microorganisms determined by cultivation techniques, and 2) to characterize the cytokine production by white blood cells present in the amniotic fluid using flow cytometry-based techniques. MATERIALS AND METHODS: Amniotic fluid samples from 20 women who had the diagnosis of clinical chorioamnionitis at term were analyzed using cultivation techniques (for aerobic and anaerobic bacteria as well as genital Mycoplasmas)...
October 20, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27755564/untargeted-metabolomic-analysis-of-amniotic-fluid-in-the-prediction-of-preterm-delivery-and-bronchopulmonary-dysplasia
#10
Eugenio Baraldi, Giuseppe Giordano, Matteo Stocchero, Laura Moschino, Patrizia Zaramella, Maria Rosa Tran, Silvia Carraro, Roberto Romero, Maria Teresa Gervasi
OBJECTIVE: Bronchopulmonary dysplasia (BPD) is a serious complication associated with preterm birth. A growing body of evidence suggests a role for prenatal factors in its pathogenesis. Metabolomics allows simultaneous characterization of low molecular weight compounds and may provide a picture of such a complex condition. The aim of this study was to evaluate whether an unbiased metabolomic analysis of amniotic fluid (AF) can be used to investigate the risk of spontaneous preterm delivery (PTD) and BPD development in the offspring...
2016: PloS One
https://www.readbyqxmd.com/read/27719895/simultaneous-determination-of-atropine-and-scopolamine-in-buckwheat-and-related-products-using-modified-quechers-and-liquid-chromatography-tandem-mass-spectrometry
#11
Hongping Chen, Jesús Marín-Sáez, Roberto Romero-González, Antonia Garrido Frenich
A method was developed for the determination of atropine and scopolamine in buckwheat and related products. A modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) extraction procedure was evaluated. Dispersive solid phase extraction (d-SPE) was studied as clean-up step, using graphitized black carbon (GBC) and primary secondary amine (PSA). The extract was diluted with water (50:50, v/v) prior to chromatographic analysis. The method was validated and recoveries (except chia samples spiked at 10μg/kg) ranged from 75% to 92%...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27658719/in-vivo-t-cell-activation-by-a-monoclonal-%C3%AE-cd3%C3%AE%C2%B5-antibody-induces-preterm-labor-and-birth
#12
Nardhy Gomez-Lopez, Roberto Romero, Marcia Arenas-Hernandez, Hyunyoung Ahn, Bogdan Panaitescu, Felipe Vadillo-Ortega, Carmen Sanchez-Torres, Katherine S Salisbury, Sonia S Hassan
PROBLEM: Activated/effector T cells seem to play a role in the pathological inflammation associated with preterm labor. The aim of this study was to determine whether in vivo T-cell activation by a monoclonal αCD3ε antibody induces preterm labor and birth. METHOD OF STUDY: Pregnant B6 mice were intraperitoneally injected with a monoclonal αCD3ε antibody or its isotype control. The gestational age, the rates of preterm birth and pup mortality at birth as well as the fetal heart rate and umbilical artery pulsatility index were determined...
November 2016: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27625200/umbilical-cord-cd71-erythroid-cells-are-reduced-in-neonates-born-to-women-in-spontaneous-preterm-labor
#13
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Ronald Unkel, Tippi C MacKenzie, Michela Frascoli, Sonia S Hassan
PROBLEM: Preterm neonates are highly susceptible to infection. Neonatal host defense against infection seems to be maintained by the temporal presence of immunosuppressive CD71+ erythroid cells. The aim of this study was to investigate whether umbilical cord CD71+ erythroid cells are reduced in neonates born to women who undergo spontaneous preterm labor/birth. METHOD OF STUDY: Umbilical cord blood samples (n=155) were collected from neonates born to women who delivered preterm with (n=39) and without (n=12) spontaneous labor or at term with (n=82) and without (n=22) spontaneous labor...
October 2016: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27598508/determination-of-flonicamid-and-its-metabolites-in-bell-pepper-using-ultra-high-performance-liquid-chromatography-coupled-to-high-resolution-mass-spectrometry-orbitrap
#14
Rosalía López-Ruiz, Roberto Romero-González, José Luis Martínez Vidal, Antonia Garrido Frenich
The aim of this study is the development and validation of a method to determine flonicamid and its metabolites as TFNA (4-trifluoromethylnicotinic acid), TFNG (N-(4-trifluoromethylnicotinoyl) glycine) and TFNA-AM (4-trifluoromethylnicotinamide) in bell pepper samples by ultra high performance liquid chromatography coupled to Orbitrap mass spectrometry (UHPLC-Orbitrap-MS). A fast and simple extraction procedure with acidified acetonitrile and salts (magnesium sulfate and sodium chloride) has been used. The methodology was validated, checking specificity, recovery, precision, limits of detection (LODs) and limits of quantification (LOQs)...
September 6, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27595581/fast-determination-of-four-polar-contaminants-in-soy-nutraceutical-products-by-liquid-chromatography-coupled-to-tandem-mass-spectrometry
#15
Renata Domingos Alves, Roberto Romero-González, Rosalía López-Ruiz, M L Jiménez-Medina, Antonia Garrido Frenich
An analytical method based on a modified QuPPe (quick polar pesticide) extraction procedure coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was evaluated for the determination of four polar compounds (chlorate, fosetyl-Al, maleic hydrazide, and perchlorate) in nutraceutical products obtained from soy. Experimental conditions including extraction such as solvent, acidification, time, and clean-up sorbents were varied. Acidified acetonitrile (1 % formic acid, v/v) was used as extraction solvent instead of methanol (conventional QuPPe), which provides a doughy mixture which cannot be injected into the LC...
November 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27592683/headspace-solid-phase-microextraction-coupled-to-gas-chromatography-tandem-mass-spectrometry-for-the-determination-of-haloanisoles-in-sparkling-cava-and-cider-and-non-sparkling-wine-alcoholic-beverages
#16
Ana Ruiz-Delgado, Francisco Javier Arrebola-Liébanas, Roberto Romero-González, Rosalía López-Ruiz, Antonia Garrido Frenich
A highly sensitive analytical method was developed to determine 2,4,6-trichloroanisole (TCA), 2,3,4,6-tetrachloroanisole (TeCA), 2,4,6-tribromoanisole (TBA) and 2,3,4,5,6-pentachloroanisole (PCA) in sparkling alcoholic beverages. The method was based on the use of headspace solid-phase microextraction (HS-SPME) using a polydimethylsiloxane (PDMS) fibre. It was coupled to gas chromatography-triple quadrupole tandem mass spectrometry (GC-QqQ-MS/MS) for the detection and quantification of the target haloanisoles...
October 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27577722/h-bonded-donor-acceptor-units-segregated-in-coaxial-columnar-assemblies-toward-high-mobility-ambipolar-organic-semiconductors
#17
Beatriz Feringán, Pilar Romero, José Luis Serrano, César L Folcia, Jesús Etxebarria, Josu Ortega, Roberto Termine, Attilio Golemme, Raquel Giménez, Teresa Sierra
A novel approach to ambipolar semiconductors based on hydrogen-bonded complexes between a star-shaped tris(triazolyl)triazine and triphenylene-containing benzoic acids is described. The formation of 1:3 supramolecular complexes was evidenced by different techniques. Mesogenic driving forces played a decisive role in the formation of the hydrogen-bonded complexes in the bulk. All of the complexes formed by nonmesogenic components gave rise to hexagonal columnar (Colh) liquid crystal phases, which are stable at room temperature...
September 28, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27574895/peltatoside-isolated-from-annona-crassiflora-induces-peripheral-antinociception-by-activation-of-the-cannabinoid-system
#18
Cristina da Costa Oliveira, Clarice de Carvalho Veloso, Renata Cristina Mendes Ferreira, Gisele Avelar Lage, Lúcia Pinheiro Santos Pimenta, Igor Dimitri Gama Duarte, Thiago Roberto Lima Romero, Andrea de Castro Perez
Peltatoside is a natural compound isolated from leaves of Annona crassiflora Mart., a plant widely used in folk medicine. This substance is an analogue of quercetin, a flavonoid extensively studied because of its diverse biological activities, including analgesic effects. Besides, a previous study suggested, by computer structure analyses, a possible quercetin-CB1 cannabinoid receptor interaction. Thus, the aim of this work was to assess the antinociceptive effect of peltatoside and analyze the cannabinoid system involvement in this action...
August 30, 2016: Planta Medica
https://www.readbyqxmd.com/read/27573715/endocannabinoid-mechanism-for-orofacial-antinociception-induced-by-electroacupuncture-in-acupoint-st36-in-rats
#19
Renato Teixeira Almeida, Thiago Roberto Lima Romero, Marina Gomes Miranda E Castor Romero, Giovane Galdino de Souza, Andrea de Castro Perez, Igor Dimitri Gama Duarte
INTRODUCTION: This study was conducted with the aim of evaluating whether electroacupuncture (EA) at acupoint St36 could produce antinociception through the activation of an endocannabinoid mechanism. METHODS: Male Wistar rats were divided into experimental groups. Heat was applied to the faces of rats, and the latency to withdraw the face was measured. Furthermore, the influence of electrical stimulation (100HzP) of acupoint St36, at a 0.5mA intensity, was investigated in the facial withdrawal threshold...
July 21, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27573366/modeling-of-both-shared-and-distinct-interactions-between-mif-and-its-homologue-d-dt-with-their-common-receptor-cd74
#20
Roberto Meza-Romero, Gil Benedek, Kelley Jordan, Lin Leng, Georgios Pantouris, Elias Lolis, Richard Bucala, Arthur A Vandenbark
D-dopachrome tautomerase (D-DT) shares amino acid sequence similarity, structural architecture and biological activity with the cytokine MIF. Recent studies show that the two protein homologs also bind to the same cell surface receptor, CD74, to activate the ERK1/2 pathway that ultimately leads to pro-inflammatory and pro-survival gene expression. We recently showed that RTL1000 and DRa1-MOG-35-55, two biological drugs with potent anti-inflammatory properties that treat experimental autoimmune encephalomyelitis (EAE) in mice, bind to the cell surface receptor CD74 with high affinity and compete with MIF for binding to the same regions of CD74...
December 2016: Cytokine
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