Javier Eduardo García‐Castañeda, Cristian Francisco Vergel Galeano, Zuly Jenny Rivera‐Monroy, Jesús María Pinar-Pérez,
Solid phase peptide synthesis using the Fmoc/t-Bu strategy (SPPS-Fmoc/tBu) is the most widely used methodology for obtaining synthetic peptides. In this paper, we evaluate the viability of using 4-methylpiperidine as a reagent for deprotection of the amino acid alpha amino group in SPPS-Fmoc/tBu. For this purpose, the peptide (RRWQWRMKKLG) was simultaneously synthesized using 4-methylpiperidine or piperidine for Fmoc removal reagent. The obtained products had similar purities and yields. Finally, ...
Tópico(s): Biopolymer Synthesis and Applications
2017 - Mexican Chemical Society | Journal of the Mexican Chemical Society
Tomás Pérez-Castañeda, Cristian Rodríguez-Tinoco, J. Rodrı́guez-Viejo, M. A. Ramos,
Glasses and other non-crystalline solids exhibit thermal and acoustic properties at low temperatures anomalously different from those found in crystalline solids, and with a remarkable degree of universality. Below a few K, these universal properties have been successfully interpreted using the Tunneling Model, which has enjoyed (almost) unanimous recognition for decades. Here we present low-temperature specific-heat measurements of ultrastable glasses of indomethacin that clearly show the disappearance ...
Tópico(s): Theoretical and Computational Physics
2014 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Alfonso González‐Valderrama, Carmen Paz Castañeda, Cristián Mena, Juan Undurraga, Pilar Mondaca, Matías Yañez, Paula Bedregal, Rubén Nachar,
Abstract Aim To determine the association between duration of untreated psychosis ( DUP ) and symptoms remission in a hospitalized first‐episode psychosis cohort. Methods Inpatients with a first‐episode non‐affective psychosis were recruited. Subjects were divided into two groups of long and short DUP using a 3‐month cut‐off point, and this was related to remission at 10 weeks of treatment. Multivariate analyses were performed. Results Fifty‐five inpatients were included. There were no differences in ...
Tópico(s): Psychosomatic Disorders and Their Treatments
2015 - Wiley | Early Intervention in Psychiatry
Juan R. Muñoz‐Castañeda, Cristian Rodelo‐Haad, M. Victoria Pendón-Ruiz de Mier, Alejandro Martín‐Malo, Rafael Santamaría, Mariano Rodríguez,
Fibroblast Growth Factor 23 (FGF23) and Klotho play an essential role in the regulation of mineral metabolism, and both are altered as a consequence of renal failure. FGF23 increases to augment phosphaturia, which prevents phosphate accumulation at the early stages of chronic kidney disease (CKD). This effect of FGF23 requires the presence of Klotho in the renal tubules. However, Klotho expression is reduced as soon as renal function is starting to fail to generate a state of FGF23 resistance. Changes ...
Tópico(s): Pancreatitis Pathology and Treatment
2020 - Multidisciplinary Digital Publishing Institute | Toxins
Daniel Neri-Rosario, Yoscelina Estrella Martínez-López, Diego Esquivel-Hernández, Jean Paul Sánchez-Castañeda, Cristian Padrón-Manrique, Aarón Vázquez-Jiménez, David Giron-Villalobos, Osbaldo Resendis‐Antonio,
Introduction The gut microbiota (GM) dysbiosis is one of the causal factors for the progression of different chronic metabolic diseases, including type 2 diabetes mellitus (T2D). Understanding the basis that laid this association may lead to developing new therapeutic strategies for preventing and treating T2D, such as probiotics, prebiotics, and fecal microbiota transplants. It may also help identify potential early detection biomarkers and develop personalized interventions based on an individual’ ...
Tópico(s): Diet and metabolism studies
2023 - Frontiers Media | Frontiers in Endocrinology
Marysela Ladera‐Castañeda, Cristian Gumercindo Medina Sotelo,
Introduction: in many countries, oral health is not a priority health issue, which constitutes a fundamental challenge for health systems, which must guarantee universal and equitable access to basic oral health services for all and without economic difficulties. Aim: the purpose of the article was to carry out an analysis of public policies in oral health adopted in Latin America. Methodology: the methodology responds to a narrative review, resorting to various bibliographic sources, through databases ...
Tópico(s): Public Health and Environmental Issues
2023 - | Salud Ciencia y Tecnología
Bárbara Iruretagoyena, Carmen Paz Castañeda, Cristián Mena, Camila Díaz, Rubén Nachar, Juan Pablo Ramírez-Mahaluf, Alfonso González‐Valderrama, Juan Undurraga, James H. MacCabe, Nicolás Crossley,
Little is known about predictors of clinical response to clozapine treatment in treatment-resistant psychosis. Most published cohorts are small, providing inconsistent results. We aimed to identify baseline clinical predictors of future clinical response in patients who initiate clozapine treatment, mainly focusing on the effect of age, duration of illness, baseline clinical symptoms and homelessness. Retrospective cohort of patients with treatment-resistant schizophrenia, aged between 15 and 60 ...
Tópico(s): Family Caregiving in Mental Illness
2021 - Elsevier BV | Schizophrenia Research
Cristian Rogel-Castillo, Monica Latorre-Castañeda, Camila Muñoz-Muñoz, Cristian Agurto-Muñoz,
Edible seaweeds are an excellent source of macronutrients, micronutrients, and bioactive compounds, and they can be consumed raw or used as ingredients in food products. However, seaweeds may also bioaccumulate potentially hazardous compounds for human health and animals, namely, heavy metals. Hence, the purpose of this review is to analyze the recent trends of edible seaweeds research: (i) nutritional composition and bioactive compounds, (ii) the use and acceptability of seaweeds in foodstuffs, (iii) ...
Tópico(s): Moringa oleifera research and applications
2023 - Multidisciplinary Digital Publishing Institute | Plants
Ismael Martínez Nicolás, Pavel E. Arenas Castañeda, Cristian Antonio Molina-Pizarro, Arsenio Rosado Franco, Cynthya Maya-Hernández, Igor Barahona, Gonzalo Martínez‐Alés, Fuensanta Aroca Bisquert, Enrique Baca‐García, María Luisa Barrigón,
Background: Depression, anxiety, well-being, and suicidality are highly associated during adolescence and greatly predict mental health outcomes during adulthood. This study explored relationships between these variables among students from Mexico City.Methods: This representative cross-sectional study was carried out in education centers in Mexico City during the 2019-2020 academic year. Using a smartphone app, we implemented validated questionnaires for depression (Patient Health Questionnaire- ...
Tópico(s): Health and Lifestyle Studies
2022 - Physicians Postgraduate Press, Inc. | The Journal of Clinical Psychiatry
Cristian Camilo Castañeda-Murillo, Javier Gustavo Rojas-Ortiz, Alefsi David Sánchez-Reinoso, Cristhian Camilo Chávez-Arias, Hermann Restrepo-Díaz,
The use of agronomic alternatives such as plant hormone sprays has been considered a tool to mitigate drought stress. This research aimed to evaluate the use of foliar brassinosteroid analogue DI-31 (BRs) sprays on plant growth, leaf exchange and chlorophyll a fluorescence parameters, and biochemical variables in lulo (Solanum quitoense L. cv. septentrionale) seedlings grown under drought stress conditions. Seedlings were grown in plastic pots (3 L) using a mix between peat and sand (1:1 v/v) as substrate. ...
Tópico(s): Silicon Effects in Agriculture
2022 - Elsevier BV | Heliyon
José Luís García-García, Antonio Santos‐Moreno, Cristian Kraker‐Castañeda,
Certain ecological traits of bats may be associated with sensitivity to the fragmentation of their habitat, but the relative importance of this is unclear and has been poorly studied in tropical environments. We evaluated the relationship between six ecological traits of phyllostomid bats (body mass, trophic level, vertical foraging area, natural abundance in continuous forest, wing aspect ratio, and relative wing loading) and three measures of sensitivity to habitat fragmentation (species prevalence, ...
Tópico(s): Wildlife Ecology and Conservation
2014 - SAGE Publishing | Tropical Conservation Science
Álvaro Castañeda-Vildózola, Cristián Nava-Díaz, Jorge Váldez- Carrasco, César Ruíz-Montiel, Librado Vidal-Hernández, Santiago Barrios-Matias,
The annona fruit borer wasp Bephratelloides cubensis Ashmead was recorded for the first time damaging "ilama" fruits Annona diversifolia (Anonaceae) in Coatlan del rio, Morelos, Cacahuamilpa and El Ocotillo, Guerrero, Mexico. Geographical distribution, hosts and damage are mentioned.
Tópico(s): Insect behavior and control techniques
2010 - Springer Nature | Neotropical Entomology
Rodrigo Nieto, Hernán Silva, Alejandra Armijo, Rubén Nachar, Alfonso González, Carmen Paz Castañeda, Cristián Montes, Manuel Kukuljan,
Despite cognitive symptoms being very important in schizophrenia, not every schizophrenic patient has a significant cognitive deficit. The molecular mechanisms underlying the different degrees of cognitive functioning in schizophrenic patients are not sufficiently understood. We studied the relation between brain-derived neurotrophic factor (BDNF) and cognitive functioning in two groups of schizophrenic patients with different cognitive statuses. According to the Montreal Cognitive Assessment (MoCA) ...
Tópico(s): Autism Spectrum Disorder Research
2023 - Multidisciplinary Digital Publishing Institute | International Journal of Molecular Sciences
Diego Esquivel-Hernández, Yoscelina Estrella Martínez-López, Jean Paul Sánchez-Castañeda, Daniel Neri-Rosario, Cristian Padrón-Manrique, David Giron-Villalobos, Cristian Mendoza-Ortíz, Osbaldo Resendis‐Antonio,
Introduction The human gut microbiota (GM) is a dynamic system which ecological interactions among the community members affect the host metabolism. Understanding the principles that rule the bidirectional communication between GM and its host, is one of the most valuable enterprise for uncovering how bacterial ecology influences the clinical variables in the host. Methods Here, we used SparCC to infer association networks in 16S rRNA gene amplicon data from the GM of a cohort of Mexican patients ...
Tópico(s): Bioinformatics and Genomic Networks
2023 - Frontiers Media | Frontiers in Endocrinology
Yolanda E. Peréz‐Beltrán, Eduardo Mendeleev Becerra-Verdín, Sonia G. Sáyago‐Ayerdi, Nuria Elizabeth Rocha‐Guzmán, Emma G. García-López, Alfonso Castañeda-Martínez, Rubén Montalvo‐González, Cristian Rodriguez‐Aguayo, Efigenia Montalvo‐González,
The nutritional characteristics and bioactive compound content in purees elaborated with guava-strawberry, guava-blackberry, guava-soursop or guava-passion fruit were evaluated as well as their effect on biochemical markers of hyperglycemic and hypercholesterolemic rats. Over a 4-week period, the effects of each puree were examined. All purees presented a high content of indigestible fraction (70.6–82.3 g/100 g), vitamin C (500–534.6 mg/100 g), soluble polyphenols (32.8–33 mg/g) and antioxidant capacity. ...
Tópico(s): Phytochemicals and Antioxidant Activities
2017 - Elsevier BV | Journal of Functional Foods
Cristian Francisco Ramos-Castañeda, Miguel Ángel Olivares-Robles, Juan Vicente Méndez‐Méndez,
In this study, the impact of nanofluid use in solar-thermoelectric generators (Solar-TEG) on thermal performance is investigated through analysis and simulation methodology. For conventional cooling analysis, we use air as a coolant and graphene nanoplatelet aqueous nanofluids (GNAN) for nanofluid cooling. We make a comparison between traditional and nanofluid cooling to find the best performance. GNAN at a dispersion of 0.025, 0.05, 0.075, and 0.1-wt% are added to the cooling system. GNAN has been ...
Tópico(s): Thermal Radiation and Cooling Technologies
2021 - Multidisciplinary Digital Publishing Institute | Processes
Andrés Meynard, Javier Zapata, Nicolás Salas, Claudia Betancourtt, Gabriel Pérez-Lara, Francisco Castañeda, María Eliana Ramírez, Cristian Bulboa, Marie‐Laure Guillemin, Loretto Contreras‐Porcia,
A recent molecular taxonomic study along the Chilean coast (18° S-53° S) described 18 candidate species of bladed Bangiales of which only two were formally described. Few studies focused on local genetic and morphological diversity of bladed Bangiales and attempted to determine their intertidal distribution in contrasting habitats, and none were performed in Chile. To delimit intertidal distributions of genetic species, 66 samples of bladed Bangiales were collected at Maitencillo (32° S) in four zones: ...
Tópico(s): Polar Research and Ecology
2018 - Wiley | Journal of Phycology
Jeasson Steven Castañeda-Figueredo, Ana Isabel Torralba-Dotor, Cristian Camilo Pérez-Rodríguez, Ana María Moreno-Bedoya, Carmen Stella Mosquera-Vivas,
A variety of organic wastes can be used in innovative methods to treat water pollution through the adsorption process. In this work, we evaluated the effect of particle size (500-2000, 250-500, and less than 250 μm) and bio-adsorbent (orange, potato, and passion fruit peels) on the removal of lead and chromium from solution. The size and type of peels affected the capacity to adsorb metal ions (p < 0.05). Passion fruit peel had the highest metal adsorption, followed by orange and potato, since the cation ...
Tópico(s): Chromium effects and bioremediation
2022 - Elsevier BV | Heliyon
Cristian Kraker‐Castañeda, Sergio G. Pérez-Consuegra,
Se llevó a cabo un estudio sobre murciélagos en cafetales bajo monocultivo de sombra y un remanente de bosque en el área montañosa del valle de La Antigua Guatemala. En cada hábitatse llevó a cabo un esfuerzo estándar de 2880 m2h y se capturaron un total de 182 murciélagos de 12 especies. El número de especies observado en cada hábitat fue menor a la predicción del estimador no paramétrico de Chao 2, 89% para los cafetales y 86% para el remanente de bosque, pero cercano al nivel satisfactorio de ...
Tópico(s): Evolution and Paleontology Studies
2011 - | ACTA ZOOLÓGICA MEXICANA (N S )
Cristian Kraker‐Castañeda, Antonio Santos‐Moreno, José Luís García-García,
Aerial insectivorous bats species richness and relative activity in a tropical forest and pastures in Oaxaca, Mexico. We seasonally evaluated species richness and relative activity of aerial insectivorous bats along riparian habitats in a tropical forest and pastures in Oaxaca, southeastern Mexico. We used an Anabat TM
Tópico(s): Effects of Environmental Stressors on Livestock
2013 - SAREM | Mastozoología neotropical
Cristian Kraker‐Castañeda, Sergio G. Pérez, José Octavio Cajas-Castillo, José Luis Echeverría-Tello,
A partir de la revisión de bases de datos de colecciones zoológicas, literatura especializada y publicaciones científicas, presentamos una lista de murciélagos para Guatemala compuesta por 100 especies. Se incluyen 2 registros nuevos para el país (Micronycteris minuta y Carollia castanea), basados en ejemplares de colección. El incremento del trabajo de campo y estudios taxonómicos obligan a la actualización periódica de esta información para proveer conteos de especies precisos, con implicaciones ...
Tópico(s): Marine animal studies overview
2016 - National Autonomous University of Mexico | Revista Mexicana de Biodiversidad
Cristian Santiago Castañeda-Serrano, Pedro José Almanza-Merchán, Elberth Hernando Pinzón, German Eduardo Cely, Pablo Antonio Serrano-Cely,
El análisis de pigmentos en plantas es un procedimiento de laboratorio y comúnmente no es una medida inmediata que se realice in situ. El SPAD 502 y CCM-200 son equipos para estimar de modo indirecto, no destructivo y rápido el contenido de clorofila. La concentración de pigmentos fotosintéticos se relaciona con la concentración foliar de nitrógeno, por lo que de forma indirecta se puede conocer la deficiencia o exceso del elemento, puede servir como fundamento técnico para sugerir el manejo adecuado ...
Tópico(s): Botanical Research and Applications
2018 - | Revista Colombiana de Ciencias Hortícolas
Produção Nacional
Revisado por pares
Nicolás Crossley, Luz María Alliende, Letícia Sanguinetti Czepielewski, David Aceituno, Carmen Paz Castañeda, Camila Díaz, Bárbara Iruretagoyena, Carlos Mena, Cristián Mena, Juan Pablo Ramírez-Mahaluf, Ángeles Tepper, Javiera Vásquez, Laís Fonseca, Viviane Machado, Camilo E. Hernández, Cristian Vargas-Upegui, Gladys Gómez-Cruz, Luis Fabián Kobayashi-Romero, Tomás Moncada-Habib, Celso Arango, Deanna M. Barch, Cameron Carter, Christoph U. Correll, Nelson B. Freimer, Philip McGuire, Sara Evans‐Lacko, Eduardo A. Undurraga, Rodrigo A. Bressan, Clarissa Severino Gama, Carlos López‐Jaramillo, Camilo de la Fuente‐Sandoval, Alfonso González‐Valderrama, Juan Undurraga, Ary Gadelha,
Background Educational attainment is associated with wellbeing and health, but patients with schizophrenia achieve lower levels of education than people without. Several effective interventions can ameliorate this situation. However, the magnitude of the education gap in schizophrenia and its change over time are unclear. We aimed to reconstruct the trajectories of educational attainment in patients with schizophrenia and, if reported, their healthy comparator controls. Methods We did a systematic ...
Tópico(s): Adolescent and Pediatric Healthcare
2022 - Elsevier BV | The Lancet Psychiatry
Rogelio Enrique Palacios-Torres, Jorge Váldez-Carrasco, Jean Étienne, Ricardo Vega-Munõz, José Marín-Sánchez, Álvaro Castañeda-Vildózola, Cristián Nava-Díaz,
El objetivo de este estudio fue documentar información sobre nuevas plantas hospederas y nuevos registros de distribución geográfica de Melanagromyza floris Spencer, M. tomaterae Steyskal, M. viridis (Frost) y Ophiomyia lantanae (Froggatt). Se realizaron colectas de puparios de agosto de 2007 a agosto de 2008 sobre Tithonia sp. en Tonatico, Estado de México, sobre Physalis nicandroides Schltdl en Atotonilco el Grande, sobre Tagetes erecta L. y Lantana camara L. en Huautla, ambos municipios del estado ...
Tópico(s): Insect-Plant Interactions and Control
2010 - | ACTA ZOOLÓGICA MEXICANA (N S )
Cristian Kraker‐Castañeda, Antonio Santos‐Moreno, Consuelo Lorenzo, Anna Horváth, M. Cristina MacSwiney G., Darío Navarrete‐Gutiérrez,
Forests are a key habitat for bats, but tend to be lost and fragmented in some agri-environment schemes. We studied the effects of forest cover change on phyllostomid bats in agricultural landscapes with increment of open areas in an upland region in Chiapas, southeast Mexico. We tested whether with forest cover increase there is a directly proportional response on assemblage species diversity measures, on the capture success and body condition of particular ensembles. Depending on the spatial analysis ...
Tópico(s): Wildlife Ecology and Conservation
2017 - Taylor & Francis | Studies on Neotropical Fauna and Environment
Alfonso González‐Valderrama, Hannah E. Jongsma, Cristián Mena, Carmen Paz Castañeda, Rubén Nachar, Juan Undurraga, Nicolás Crossley, David Aceituno, Bárbara Iruretagoyena, Carlos Gallardo, Pilar Mondaca, Matías Monje, Matías Irarrázaval, Cynthia Zavala, Lucia Valmaggia, James B. Kirkbride,
Abstract Background Evidence suggests the incidence of non-affective psychotic disorders (NAPDs) varies across persons and places, but data from the Global South is scarce. We aimed to estimate the treated incidence of NAPD in Chile, and variance by person, place and time. Methods We used national register data from Chile including all people, 10–65 years, with the first episode of NAPD ( International Classification of Diseases, Tenth Revision: F20–F29) between 1 January 2005 and 29 August 2018. Denominators ...
Tópico(s): Mental Health Treatment and Access
2020 - Cambridge University Press | Psychological Medicine
Yoscelina Estrella Martínez-López, Daniel Neri-Rosario, Diego Esquivel-Hernández, Cristian Padrón-Manrique, Aarón Vázquez-Jiménez, Jean Paul Sánchez-Castañeda, David Girón-Villalobos, Cristian Mendoza-Ortíz, María de Lourdes Reyes‐Escogido, María Lola Evia-Viscarra, Alberto Aguilar-García, Osbaldo Resendis‐Antonio, Rodolfo Guardado-Mendoza,
Abstract Lifestyle modifications, metformin, and linagliptin reduce the incidence of type 2 diabetes (T2D) in people with prediabetes. The gut microbiota (GM) may enhance such interventions' efficacy. We determined the effect of linagliptin/metformin (LM) vs metformin (M) on GM composition and its relationship to insulin sensitivity (IS) and pancreatic β-cell function (Pβf) in patients with prediabetes. A cross-sectional study was conducted at different times: basal, six, and twelve months in 167 Mexican ...
Tópico(s): Dietary Effects on Health
2024 - Nature Portfolio | Scientific Reports
Juan G. Navedo, Claudio Verdugo, Ignacio A. Rodríguez‐Jorquera, José M. Abad‐Gómez, Cristián G. Suazo, Luis E. Castañeda, Valeria Araya, Jorge Ruiz, Jorge S. Gutiérrez,
Human presence at intertidal areas could impact coastal biodiversity, including migratory waterbird species and the ecosystem services they provide. Assessing this impact is therefore essential to develop management measures compatible with migratory processes and associated biodiversity. Here, we assess the effects of human presence on the foraging opportunities of Hudsonian godwits (Limosa haemastica, a trans-hemispheric migratory shorebird) during their non-breeding season on Chiloé Island, southern ...
Tópico(s): Marine and coastal plant biology
2019 - Public Library of Science | PLoS ONE
Ana-Karen Sánchez-Castañeda, Marwen Moussa, Luther Ngansop, Ioan-Cristian Trelea, Violaine Athès,
Abstract BACKGROUND 3‐Hydroxypropionic acid (3‐HP) production through glycerol bioconversion by Lactobacillus reuteri suffers from low yields and productivities due to product inhibition. Reactive extraction assisted by a Hollow Fibre Membrane Contactor (HFMC) is a promising strategy for process intensification. However, the use of this integrated system is hindered by extraction phase toxicity towards the microorganism. This study describes a solvent selection strategy based on extraction performance ( ...
Tópico(s): Enzyme Catalysis and Immobilization
2019 - Wiley | Journal of Chemical Technology & Biotechnology
Produção Nacional
Revisado por pares
Álvaro Castañeda-Vildózola, Cristián Nava-Díaz, Marcelo Duarte, Omar Franco‐Mora, LM Hernández-Fuentes,
This is the irst record of Oenomaus ortygnus (Cramer) damaging fruits of ilama (Annona diversifolia) and extends the butter ly distribution for three states in Mexico.
Tópico(s): Plant and animal studies
2011 - Springer Nature | Neotropical Entomology