Pesquisa | SciELO

Abstract Background: Pilomatrixoma, also known as calcifying epithelioma of Malherbe, is a benign cutaneous neoplasm that demonstrates differentiation towards the matrix portion of hair follicles. It is the most common benign cutaneous neoplasm in childhood and youth, although it can occur at any age. With a general incidence ranging from 0.001% to 0.0031% of all cutaneous tumors. There is a slight predilection for females, with a female-to-male ratio of 1.15:1. Methods: Observational, descriptive, retrospective, and cross-sectional study conducted using the electronic database of the dermatopathology department of Dr. Manuel Gea González General Hospital, from January 1992 to July 2023. Only cases with a histopathological diagnosis of pilomatrixoma, pilomatricoma, and Malherbe’s calcifying epithelioma were included. Results: A total of 200 pilomatrixomas were recorded in 177 patients. The tumor predominantly affected females in the pediatric age group, with an average age of 22.98 years in the studied population. The most common location was the head (periorbital region), followed by the upper extremities and trunk. Upon separating the population into pediatric and adult groups, 111 and 89 cases were identified, respectively. Conclusions: We present a detailed study on pilomatrixomas with a comprehensive overview of the demographic, clinical, and epidemiological characteristics of this benign cutaneous neoplasm. The results revealed robust statistical data highlighting the distribution by age, gender, topography, morphology, accompanying symptoms, and frequency of clinical differential diagnoses. This study significantly contributes to the existing knowledge of pilomatrixomas and serves as a valuable reference for future research and clinical practice.

Resumen Introducción: El pilomatrixoma o epitelioma calcificado de Malherbe es una neoplasia cutánea benigna que muestra diferenciación hacia la porción de la matriz de los folículos pilosos. Es la neoplasia cutánea benigna más frecuente en la infancia y la juventud, aunque puede ocurrir a cualquier edad. Tiene una incidencia general que oscila entre el 0.001% y el 0.0031% de todos los tumores cutáneos. Se reporta una ligera predilección por el sexo femenino, con una relación mujer: hombre de 1.15:1. Métodos: Estudio observacional, descriptivo, retrospectivo y transversal en el que se utilizó la base de datos electrónica del departamento de dermatopatología del Hospital General Dr. Manuel Gea González, entre enero de 1992 y julio de 2023. Para la búsqueda de los casos solo se incluyeron aquellos con diagnóstico histopatológico de pilomatrixoma, pilomatricoma o epitelioma calcificado de Malherbe. Resultados: Se registraron 200 pilomatrixomas en 177 pacientes. El tumor predominó en mujeres de edad pediátrica; el promedio de edad de la población estudiada fue 22.98 años. La topografía más frecuente fue la cabeza (región periorbitaria), seguida de las extremidades superiores y el tronco. Al separar la población en pediátricos y adultos, se encontraron 111 y 89 casos, respectivamente. Conclusiones: Presentamos un estudio detallado sobre pilomatrixomas con una visión exhaustiva de las características demográficas, clínicas y epidemiológicas de esta neoplasia cutánea benigna. Los resultados revelaron datos estadísticos sólidos, destacando la distribución por edades, sexo, topografía, morfología, síntomas acompañantes y frecuencia de diagnósticos diferenciales clínicos. Este estudio contribuye significativamente al conocimiento existente sobre los pilomatrixomas y sirve como una referencia valiosa para futuras investigaciones y para la práctica clínica.

https://doi.org/10.24875/bmhim.23000156

Tinea corporis intrafamilial infection in pets due to Microsporum canis
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Sierra-Maeda, Karla Yaeko

; Martínez-Hernández, Fernando

; Arenas, Roberto

; Boeta-Ángeles, Leticia

; Martínez-Chavarría, Luary Carolina

; Rodríguez-Colín, Sonia Fabiola

; Xicohtencatl-Cortes, Juan

; Hernández-Castro, Rigoberto

Revista do Instituto de Medicina Tropical de São Paulo

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2024, Volume 66 elocation e30

Resumo: En | Texto: En | PDF: En

ABSTRACT Microsporum canis, one of the most widespread dermatophytes worldwide, is a zoonotic microorganism that transmits infection from reservoirs such as cats and dogs to humans. This microorganism is associated with Tinea corporis and other clinical manifestations; however, few studies have used genetic surveillance to determine and characterize the process of zoonotic transmission. In this study, we show a clear example of zoonotic transmission from a cat to an intrafamilial environment, where it caused Tinea corporis by infection with M. canis. Molecular characterization using the b-tubulin gene and Random Amplified Polymorphic DNA analysis made it possible to determine that the six isolates of M. canis obtained in this study belonged to the same genetic variant or clone responsible for reservoir-reservoir or reservoir-human transmission. worldwide humans manifestations however environment M btubulin b tubulin reservoirreservoir reservoir reservoirhuman human

https://doi.org/10.1590/s1678-9946202466030

COVID-19 Outcome Prediction by Integrating Clinical and Metabolic Data using Machine Learning Algorithms
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Villagrana-Bañuelos, Karen E.

; Maeda-Gutiérrez, Valeria

; Alcalá-Rmz, Vanessa

; Oropeza-Valdez, Juan J.

; Herrera-Van Oostdam, Ana S.

; Castañeda-Delgado, Julio E.

; López, Jesús Adrián

; Borrego Moreno, Juan C.

; Galván-Tejada, Carlos E.

; Galván-Tejeda, Jorge I.

; Gamboa-Rosales, Hamurabi

; Luna-García, Huizilopoztli

; Celaya-Padilla, José M.

; López-Hernández, Yamilé

Revista de investigación clínica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2022, Volume 74 Nº 6 Páginas 314 - 327

Resumo: En | Texto: En | PDF: En

ABSTRACT Background: The coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus and is responsible for nearly 6 million deaths worldwide in the past 2 years. Machine learning (ML) models could help physicians in identifying high-risk individuals. Objectives: To study the use of ML models for COVID-19 prediction outcomes using clinical data and a combination of clinical and metabolic data, measured in a metabolomics facility from a public university. Methods: A total of 154 patients were included in the study. “Basic profile” was considered with clinical and demographic variables (33 variables), whereas in the “extended profile,” metabolomic and immunological variables were also considered (156 characteristics). A selection of features was carried out for each of the profiles with a genetic algorithm (GA) and random forest models were trained and tested to predict each of the stages of COVID-19. Results: The model based on extended profile was more useful in early stages of the disease. Models based on clinical data were preferred for predicting severe and critical illness and death. ML detected trimethylamine N-oxide, lipid mediators, and neutrophil/lymphocyte ratio as important variables. Conclusion: ML and GAs provided adequate models to predict COVID-19 outcomes in patients with different severity grades.

https://doi.org/10.24875/ric.22000182

Official position of the Brazilian Association of Bone Assessment and Metabolism (ABRASSO) on the evaluation of body composition by densitometry: part I (technical aspects)— general concepts, indications, acquisition, and analysis
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Maeda, Sergio Setsuo

; Peters, Barbara Santarosa Emo

; Martini, Lígia Araújo

; Antunes, Hannah Karen Moreira

; Gonzalez, Maria Cristina

; Arantes, Henrique Pierotti

; Prado, Carla M.

; Pinto, Camila Lemos

; Araújo, Iana Mizumukai de

; Paula, Francisco José Albuquerque de

; Borges, Joao Lindolfo Cunha

; Albergaria, Ben-Hur

; Ushida, Marcela

; Souza, Guilherme Cardenaz de

; Mendonça, Laura Maria Carvalho de

; Prado, Mirley do

; Pinheiro, Marcelo de Medeiros

Advances in Rheumatology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 62 elocation 7

Resumo: En | Texto: En | PDF: En

Abstract Objective: To review the technical aspects of body composition assessment by dual-energy X-ray absorptiometry (DXA) and other methods based on the most recent scientific evidence. Materials and methods: This Official Position is a result of efforts by the Scientific Committee of the Brazilian Association of Bone Assessment and Metabolism (Associação Brasileira de Avaliação Óssea e Osteometabolismo, ABRASSO) and health care professionals with expertise in body composition assessment who were invited to contribute to the preparation of this document. The authors searched current databases for relevant publications. In this first part of the Official Position, the authors discuss the different methods and parameters used for body composition assessment, general principles of DXA, and aspects of the acquisition and analysis of DXA scans. Conclusion: Considering aspects of accuracy, precision, cost, duration, and ability to evaluate all three compartments, DXA is considered the gold-standard method for body composition assessment, particularly for the evaluation of fat mass. In order to ensure reliable, adequate, and reproducible DXA reports, great attention is required regarding quality control procedures, preparation, removal of external artifacts, imaging acquisition, and data analysis and interpretation.

https://doi.org/10.1186/s42358-022-00241-8

Official Position of the Brazilian Association of Bone Assessment and Metabolism (ABRASSO) on the evaluation of body composition by densitometry—part II (clinical aspects): interpretation, reporting, and special situations
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Maeda, Sergio Setsuo

; Albergaria, Ben-Hur

; Szejnfeld, Vera Lúcia

; Lazaretti-Castro, Marise

; Arantes, Henrique Pierotti

; Ushida, Marcela

; Domiciano, Diogo Souza

; Pereira, Rosa Maria Rodrigues

; Marin-Mio, Rosângela Villa

; Oliveira, Mônica Longo de

; Mendonça, Laura Maria Carvalho de

; Prado, Mirley do

; Souza, Guilherme Cardenaz de

; Palchetti, Cecília Zanin

; Sarni, Roseli Oselka Saccardo

; Terreri, Maria Teresa

; Castro, Luiz Claudio Gonçalves de

; Artoni, Silvana Martinez Baraldi

; Amoroso, Lizandra

; Karcher, Débora Emy

; Prado, Carla M.

; Gonzalez, Maria Cristina

; Pinheiro, Marcelo de Medeiros

Advances in Rheumatology

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 62 elocation 11

Resumo: En | Texto: En | PDF: En

Abstract Objective: To present an updated and evidence-based guideline for the use of dual-energy x-ray absorptiometry (DXA) to assess body composition in clinical practice. Materials and methods: This Official Position was developed by the Scientific Committee of the Brazilian Association of Bone Assessment and Metabolism ( Associação Brasileira de Avaliação Óssea e Osteometabolismo , ABRASSO) and experts in the field who were invited to contribute to the preparation of this document. The authors searched current databases for relevant publications in the area of body composition assessment. In this second part of the Official Position, the authors discuss the interpretation and reporting of body composition parameters assessed by DXA and the use of DXA for body composition evaluation in special situations, including evaluation of children, persons with HIV, and animals. Conclusion: This document offers recommendations for the use of DXA in body composition evaluation, including indications, interpretation, and applications, to serve as a guiding tool in clinical practice and research for health care professionals in Brazil.

https://doi.org/10.1186/s42358-022-00240-9

Redescription of Venezillo stuckchensis (Crustacea: Oniscidea: Armadillidae), a terrestrial isopod from the Baja California Peninsula, Mexico
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Segura-Zarzosa, Ilse E.

; Maeda-Martínez, Alejandro M.

; Murugan, Gopal

; Obregón-Barboza, Hortencia

Revista mexicana de biodiversidad

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2022, Volume 93 elocation e934028

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Para los isópodos terrestres mexicanos de la familia Armadillidae se han registrado 6 especies del género Cubaris Brandt, 1833 y 18 especies del género Venezillo Verhoeff, 1928. De ellas, solo Venezillo stuckchensis (Mulaik, 1960) ha sido reportada para la península de Baja California (PBC). Esta especie fue descrita con base en un solo ejemplar macho y desde su descripción en 1960, no existen estudios biológicos sobre esta entidad taxonómica. En este trabajo se redescribe V. stuckchensis con la designación de un neotipo y paratopotipos con especímenes de la localidad tipo. Se reporta la especie de 5 humedales adicionales del sur de la PBC en Baja California Sur. Se corrige el nombre formal y la localización geográfica de la localidad tipo. La identidad morfológica de V. stuckchensis se documenta con micrografías de MEB y se proporcionan datos sobre su identidad molecular con base en fragmentos del gene mitocondrial 16S ribosomal ARN.

Abstract For the Mexican oniscideans of the family Armadillidae, 6 species of the genus Cubaris Brandt, 1833 and 18 species of the genus Venezillo Verhoeff, 1928 have been recorded. Of them, only Venezillo stuckchensis (Mulaik, 1960) has been registered for the Baja California Peninsula (BCP). This species was described upon a single male and no biological studies exist on this taxonomic entity since its original description in 1960. In this work, we redescribe V. stuckchensis including the designation of a neotype and paratopotypes using specimens from the type locality. We report this species from 5 additional wetlands of southern BCP in the state of Baja California Sur. The type locality is corrected in its formal name and its geographical location. The morphological identity of V. stuckchensis is documented using SEM micrographs, and data on its molecular identity with 16S ribosomal RNA mitochondrial gene fragments are given.

https://doi.org/10.22201/ib.20078706e.2022.93.4028

New records of exotic species of Oniscidea (Crustacea: Isopoda) from northern Mexico
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Segura-Zarzosa, Ilse E.

; Rodríguez-Almaraz, Gabino A.

; Obregón-Barboza, Hortencia

; Murugan, Gopal

; Treviño-Flores, José Alfredo

; Maeda-Martínez, Alejandro M.

Revista mexicana de biodiversidad

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 91 elocation e913098

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract To date 86 species of 33 genera and 16 families of Oniscidea have been recorded in Mexico. Collections of 4 academic institutions and recent field materials were revised. From 1,820 specimens, 1,417 (77.6%) were determined to belong to 6 exotic forms. A taxonomic account and a species identification key with SEM plates of these exotic entities are presented. For morphological analysis we used light and SEM microscopy. The molecular identity of 5 of the 6 forms was examined through cytochrome oxidase 1 gene (mtDNA) analyses. The exotic species determined are: Armadillidae, Cubaris murina; Armadillidiidae, Armadillidium vulgare; Porcellionidae, Agabiformius lentus, Porcellio laevis, P. scaber, and Porcellionides pruinosus. The exotic oniscideans were recorded from urban, rural and natural (riparian) zones in 15 states of northern Mexico, including the first formal records in Aguascalientes, Chihuahua, Durango, and Zacatecas. Armadillidium vulgare, P. laevis, and P. pruinosus often co-occurred and are the most widely distributed species in this region. Although most of the material examined was recorded from urban zones (> 50% of studied sites), A. vulgare and P. laevis were also found in riparian areas (natural zones), yet P. pruinosus was recorded mainly from riparian areas (60% of 45 lots examined).

Resumen A la fecha se han registrado en México 86 especies de 33 géneros y 16 familias de Oniscidea. Se revisaron colecciones de 4 instituciones académicas del norte de México y material recién recolectado en campo. De 1,820 especímenes, 1,417 (77.6%) pertenecen a 6 especies exóticas. Se presenta una relación taxonómica y una clave de identificación con láminas MEB. Se examinó la identidad molecular de 5 de las 6 formas exóticas a través del análisis del gen citocromo oxidasa 1 (ADNmt). Las especies determinadas son: Armadillidae, Cubaris murina; Armadillidiidae, Armadillidium vulgare; Porcellionidae, Agabiformius lentus, Porcellio laevis, P. scaber y Porcellionides pruinosus. Los oniscideos exóticos se registraron de zonas urbanas, rurales y naturales (áreas riparias) en 15 estados del norte de México, incluyendo los primeros registros formales en Aguascalientes, Chihuahua, Durango y Zacatecas. A. vulgare, P. laevis y P. pruinosus cohabitaron frecuentemente y son las especies más ampliamente distribuidas en esta región. A pesar de que la mayoría del material se registró de zonas urbanas (> 50% de sitios), A. vulgare y P. laevis se encontraron también en áreas riparias, y más aun, P. pruinosus se registró principalmente en zonas naturales (60% de 45 lotes examinados).

https://doi.org/10.22201/ib.20078706e.2020.91.3098 203 downloads

Consensus - reference ranges of vitamin D [25(OH)D] from the Brazilian medical societies. Brazilian Society of Clinical Pathology/Laboratory Medicine (SBPC/ML) and Brazilian Society of Endocrinology and Metabolism (SBEM)
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ferreira, Carlos Eduardo S.

; Maeda, Sergio S.

; Batista, Marcelo C.

; Lazaretti-Castro, Marise

; Vasconcellos, Leonardo S.

; Madeira, Miguel

; Soares, Lilian M.

; Borba, Victória Z. C.

; Moreira, Carolina A.

Jornal Brasileiro de Patologia e Medicina Laboratorial

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Nov 2017, Volume 53 Nº 6 Páginas 377 - 381

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Introdução: A vitamina D é considerada um pré-hormônio e apresenta papel crucial na homeostase do cálcio e, consequentemente, na saúde óssea. A maior fonte de vitamina D é a pele, em resposta à luz solar. Apenas pequenas quantidades dessa vitamina são encontradas em alguns alimentos (especialmente peixes gordurosos), o que faz com que a disponibilidade da vitamina D na dieta seja limitada. Estudos populacionais brasileiros demonstram que a prevalência da hipovitaminose D no nosso país é elevada. Objetivo: Definição dos intervalos de referência para vitamina D [25(OH)D]. Discussão: Consenso de especialistas - revisão da literatura. Conclusão: A padronização dos intervalos de referência é fundamental para o correto diagnóstico e tratamento da hipovitaminose D.

ABSTRACT Introduction: Vitamin D is considered a pre-hormone and plays a crucial role in calcium homeostasis and, consequently, in bone health. The best source of vitamin D is the skin in response to sunlight. Only small amounts of this vitamin are found in some foods (especially fatty fish), which makes availability of vitamin D in the diet limited. Brazilian population studies show that the prevalence of hypovitaminosis D in our country is high. Objective: To define the reference intervals for vitamin D [25(OH)D]. Discussion: Consensus of specialists - literature review. Conclusion: The standardization of reference intervals is fundamental for the correct diagnosis and treatment of hypovitaminosis D.

https://doi.org/10.5935/1676-2444.20170060 4505 downloads

OsHV-1 and notifiable protozoa in healthy Crassostrea corteziensis cultured in two distant areas of the Gulf of California
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Martínez-García, María Fernanda

; Grijalva-Chon, José Manuel

; Castro-Longoria, Reina

; Chávez-Villalba, Jorge Eduardo

; Enríquez-Espinoza, Tania Lizbeth

; Maeda-Martínez, Alfonso Nivardo

; Peña-Messina, Emilio

Latin american journal of aquatic research

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2017, Volume 45 Nº 4 Páginas 699 - 707

Resumo: En | Texto: En | PDF: En

ABSTRACT Infectious diseases have been a major limiting factor for large scale production of oyster farming. Several factors have contributed to the emergence and spread of infectious diseases in all cultivation sites around the world. Therefore, the prevention and control of diseases has become a priority for the sustainability of global aquaculture. Crassostrea corteziensis is a native species that contributes to the Mexican Pacific oyster production and used in this study to assess seasonal simultaneous infective events between distant areas in the Gulf of California. The results of the molecular analysis showed a higher prevalence of Perkinsus marinus in the north area and Marteilia refringens in the south. OsHV-1 was only present in summer and autumn with low prevalence in the two areas. The histological analysis of the PCR-positive organisms presented alterations characteristic of infections. The presence of M. refringens in a new location on the Gulf of California suggests that this pathogen is already well established in the area and the dual presence of pathogens in C. corteziensis is reported for the first time.

https://doi.org/10.3856/vol45-issue4-fulltext-6 426 downloads

10.

Molecular evidence of the protozoan parasite Marteilia refringens in Crassostrea gigas and Crassostrea corteziensis from the Gulf of California
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Grijalva-Chon, José Manuel

; Castro-Longoria, Reina

; Enríquez-Espinoza, Tania Lizbeth

; Maeda-Martínez, Alfonso Nivardo

; Mendoza-Cano, Fernando

Latin american journal of aquatic research

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Set 2015, Volume 43 Nº 4 Páginas 776 - 780

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

The search for exotic pathogens related to the outbreaks and in surveillance samplings of the Mexican oyster farms, is a recent activity achieved by academic institutions and state committees for Aquatic Animal Health, with remarkable results. In samples of Crassostrea gigas collected through December 2009, January 2010 and November 2010, and of C. corteziensis in September 2011, the protozoan Marteilia refringens was detected for the first time in the Gulf of California. The carrier oysters were from cultures without abnormal mortality rates, whereby, the use of histology, in situ hybridization and transmission electron microscopy studies are necessary to determine if M. refringens has become established in the Gulf of California oyster cultures. Detection of M. refringens is of great concern to the global oyster farming industry.

La búsqueda de patógenos exóticos relacionados con brotes de enfermedades y en muestreos de vigilancia de las granjas ostrícolas de México es una actividad reciente, realizada por instituciones académicas y comités estatales de sanidad acuícola, con resultados notables. En muestras de Crassostrea gigas colectadas en diciembre 2009, enero 2010 y noviembre 2010 y de C. corteziensis en septiembre 2011, se detectó por PCR el protozoario Marteilia refringens por primera vez en el Golfo de California. Los ostiones portadores provenían de cultivos sin mortalidades anormales, por lo cual, el uso de histología, hibridación in situ y microscopía electrónica de transmisión son necesarios para determinar si M. refringens se ha establecido en los cultivos de ostras del Golfo de California. La detección de la presencia de M. refringens es de gran preocupación para la industria ostrícola.

https://doi.org/10.3856/vol43-issue4-fulltext-16 1154 downloads

11.

Fitting mathematical models to lactation curves from holstein cows in the southwestern region of the state of Parana, Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ferreira, Abílio G.T.

; Henrique, Douglas S.

; Vieira, Ricardo A.M.

; Maeda, Emilyn M.

; Valotto, Altair A.

Anais da Academia Brasileira de Ciências

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2015, Volume 87 Nº 1 Páginas 503 - 517

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

O objetivo do presente estudo foi avaliar quatro modelos matemáticos quanto ao seu ajuste a curvas de lactação de vacas Holandesas pertencentes a rebanhos da região sudoeste do estado do Paraná, Brasil. Inicialmente 42.281 controles de produções leiteiras referentes aos anos de 2005 a 2011, foram da "Associação Paranaense de Criadores de Bovinos da Raça Holandesa (APCBRH)". Os dados que não possuíam a data de secagem e a produção total aos 305 dias foram excluídos, restando 15.142 controles referentes a 2.441 vacas Holandesas. Os dados foram classificados de acordo com a ordem de parição (variando de um a seis), e dentro de cada ordem de parição os animais foram separados em quartis (Q25%, Q50%,Q75% e Q100%) conforme a produção total aos 305 dias. Para cada ordem de parição, em cada quartil foram ajustados quatro modelos matemáticos, dois predominantemente empíricos (modelo de Brody e de Wood) e dois com características mais mecanicistas (modelo de Dijkstra e de Pollott). A qualidade de ajuste foi avaliada pelo critério de Akaike corrigido. O modelo de Wood apresentou o melhor ajuste em quase todas as situações avaliadas e, portanto, deve ser considerado como o melhor modelo para descrever, pelo menos empiricamente, as curvas de lactação de vacas Holandesas criadas no Sudoeste do Paraná.

The objective of this study was to evaluate four mathematical models with regards to their fit to lactation curves of Holstein cows from herds raised in the southwestern region of the state of Parana, Brazil. Initially, 42,281 milk production records from 2005 to 2011 were obtained from "Associação Paranaense de Criadores de Bovinos da Raça Holandesa (APCBRH)". Data lacking dates of drying and total milk production at 305 days of lactation were excluded, resulting in a remaining 15,142 records corresponding to 2,441 Holstein cows. Data were sorted according to the parity order (ranging from one to six), and within each parity order the animals were divided into quartiles (Q25%, Q50%, Q75% and Q100%) corresponding to 305-day lactation yield. Within each parity order, for each quartile, four mathematical models were adjusted, two of which were predominantly empirical (Brody and Wood) whereas the other two presented more mechanistic characteristics (models Dijkstra and Pollott). The quality of fit was evaluated by the corrected Akaike information criterion. The Wood model showed the best fit in almost all evaluated situations and, therefore, may be considered as the most suitable model to describe, at least empirically, the lactation curves of Holstein cows raised in Southwestern Parana.

https://doi.org/10.1590/0001-3765201520130514 4526 downloads

12.

Three new species of Hydroptila (Trichoptera: Hydroptilidae) from Northeastern Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Souza, Wagner Rafael M. de

; Santos, Allan Paulo Moreira

; Takiya, Daniela Maeda

Zoologia (Curitiba)

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2014, Volume 31 Nº 6 Páginas 639 - 643

Resumo: En | Texto: En | PDF: En

Hydroptila Dalman, 1819 is one of the most diverse genus of Hydroptilidae, comprising over 400 species distributed in all biogeographical regions. Only two species were previously recorded from Brazil. Here, three new species from Northeastern Brazil are described and illustrated. The new species can be distinguished based on the male genitalia: Hydroptila marighellai sp. nov. can be recognized by the pliers-shaped tergum X; H. florestani sp. nov. can be recognized by having inferior appendages curved upwards in lateral view; and H. zerbinae sp. nov. differs from the other species of the denza group in the apex of the tergum X, which is wide in lateral view, and the undivided apical portion of the phallus. These are the first records of species of Hydroptila from Northeastern Brazil.

https://doi.org/10.1590/S1984-46702014000600010 1366 downloads

13.

Estatus actual de conservación de seis especies de peces dulceacuícolas de la península de Baja California, México
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ruiz-Campos, Gorgonio

; Camarena-Rosales, Faustino

; González-Acosta, Adrián F.

; Maeda-Martínez, Alejandro M.

; García de León, Francisco J.

; Varela-Romero, Alejandro

; Andreu-Soler, Asunción

Revista mexicana de biodiversidad

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2014, Volume 85 Nº 4 Páginas 1235 - 1248

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

The current distribution and conservation status of six native freshwater fishes of the Baja California peninsula (Entosphenus tridentatus, Oncorhynchus mykiss nelsoni, Fundulus lima, Cyprinodon macularius, Gasterosteus aculeatus and Gobiesox juniperoserrai), included in the Norma Oficial Mexicana-059-2010, were assessed on the basis of information generated during the study period of 2000-2014. Except for E. tridentatus in the Santo Domingo river drainage and G. juniperoserrai in the Las Pocitas-San Hilario drainage, most of the species were recorded in the hydrological basins sampled. Oncorhynchus mykiss nelsoni showed a significant population fluctuation in the San Rafael river in relation to the dynamics of the base flow and the forest fire events. Fundulus lima presented the probable extirpation from four drainages (San Javier, Bebelamas, San Luis, and Las Pocitas-San Hilario) that is contrasting with the finding of a new population in the Santa Cruz stream. Cyprinodon macularius in the most important remnant population in Baja California (cerro Prieto geothermal ponds) showed interannual fluctuations related with the level of flooding and availability of marginal habitats. Gasterosteus aculeatus showed a progressive population reduction in the southernmost distributional locality (mouth of El Rosario river), as well as the extirpation in the lower Santo Domingo river basin and its recent presence in the mouth of the Cantamar river. Gobiesox juniperoserrai, known only from the type locality is determined as extirpated.

Se determinó el estatus actual de conservación de 6 peces dulceacuícolas nativos de la península de Baja California (Entosphenus tridentatus, Oncorhynchus mykiss nelsoni, Fundulus lima, Cyprinodon macularius, Gasterosteus aculeatus y Gobiesox juniperoserrai), incluidos en la Norma Oficial Mexicana 059-2010, a partir de la información obtenida durante el periodo 2000-2014. Con excepción de E. tridentatus en la cuenca del río Santo Domingo y de G. juniperoserrai en la cuenca de Las Pocitas-San Hilario, la mayoría de las especies fueron registradas en las cuencas hidrológicas muestreadas. Oncorhynchus mykiss nelsoni registró una marcada fluctuación poblacional en el río San Rafael, en estrecha relación con la dinámica del flujo hidrológico y los eventos de incendio forestal. Fundulus lima presentó su probable extirpación en 4 cuencas: San Javier, Bebelamas, San Luis y Las Pocitas-San Hilario, lo cual contrasta con el hallazgo de una nueva población en el arroyo Santa Cruz. Cyprinodon macularius en su población remanente más importante en Baja California -lagunas de la planta geotérmica cerro Prieto- denotó fluctuaciones interanuales relacionadas directamente con el nivel de inundación de las lagunas y la disponibilidad de hábitat. Gasterosteus aculeatus exhibió un descenso poblacional progresivo en la localidad más austral de su distribución (río El Rosario), además de la extirpación de la población de la bocana del río Santo Domingo y el redescubrimiento de una nueva población en la bocana del río Cantamar. Gobiesox juniperoserrai, especie conocida sólo de la localidad tipo, es determinada como extirpada.

https://doi.org/10.7550/rmb.43747 2849 downloads

14.

Desempeño biológico del callo de hacha Atrina maura y el mejillón Mytella strigata en diferentes regímenes de flujo de agua
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Arrieche, D

; Maeda-Martínez, AN

; Farías-Sánchez, JA

; Saucedo, PE

Ciencias marinas

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Set 2010, Volume 36 Nº 3 Páginas 237 - 248

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Three water flow rates (3.1, 7.3, and 12.1 cm s-1) were used during a 26-day period to determine their effects on shell dimensions, tissue mass, condition index, biochemical composition of tissues, and mortality of the penshell Atrina maura and mussel Mytella strigata kept in an open-flow flume. These parameters were measured at the beginning and end of the trial and significant differences were determined using non-parametric comparisons of multiple independent samples. Both species were able to withstand high seston loads and daily oscillations of temperature, which yielded negligible mortalities. Both species were affected differently by water flow. Atrina maura grew significantly larger above a flow of 7.3 cm s-1, which appears typical of species inhabiting tidal channels. At this flow, there was a significant increase in lipids and acylglycerols within the digestive gland, adductor muscle, and mantle tissue, accompanied by a significant decline in proteins and carbohydrates within the same organs. In contrast, the flow did not have a significant effect on M. strigata, except for increased lipid and acylglycerol reserves within body tissues at 3.1 and 7.3 cm s-1, and increased lipid and acylglycerol levels within the gonad at 7.3 and 12.1 cm s-1. Digestive gland proteins, carbohydrates, and glycogen increased at the highest flow. Data suggest that the penshell is a flow-conforming mollusk that prefers flows exceeding 7.3 cm s-1, and that the strigate mussel is a flow-regulating species in the range of flows that were studied.

Se determinó el efecto del flujo (3.1, 7.3 y 12.1 cm s-1) sobre las dimensiones de la concha, la masa del tejido, el índice de condición, la composición bioquímica de los tejidos y la mortalidad del callo de hacha Atrina maura y el mejillón Mytella strigata, mantenidos por 26 días en un sistema de flujo abierto. Estos parámetros se midieron al inicio y al final del experimento, y se determinaron diferencias significativas usando comparaciones no paramétricas de muestras independientes. Ambas especies fueron capaces de tolerar una alta concentración de seston y oscilaciones diarias de temperatura, las cuales no afectaron la supervivencia. Atrina maura creció significativamente más en un flujo mayor a 7.3 cm s-1, lo cual parece ser típico de especies que habitan en canales intermareales. A este flujo, A. maura presentó un incremento en lípidos y acilgliceroles en la glándula digestiva, el músculo aductor y el manto, así como una reducción de proteínas y carbohidratos en estos mismos órganos. En contraste, el flujo no tuvo un efecto significativo en M. strigata, con excepción de un incremento de lípidos y acilgliceroles en los tejidos a flujos de 3.1 y 7.3 cm s-1, y en la gónada a 7.3 y 12.1 cm s-1. En la glándula digestiva, se observó un incremento en proteínas, carbohidratos y glicógeno con el flujo más elevado. Esta información sugiere que el callo de hacha es una especie que prefiere flujos superiores a los 7.3 cm s-1 y que el mejillón parece preferir tasas de flujo dentro del intervalo estudiado.

5227 downloads Citado 1 vez em SciELO

15.

Importância da complementação com SPECT e 99mTc na cintilografia das paratiroides e da correlação clínica, laboratorial, ultrassonográfica e citológica na localização pré-operatória do adenoma de paratiroide - ensaio pictórico
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics

Oliveira, Marco Antônio Condé de

; Maeda, Sérgio Setsuo

; Dreyer, Patrícia

; Lobo, Alberto

; Andrade, Victor Piana de

; Hoff, Ana O.

; Biscolla, Rosa Paula Mello

; Smanio, Paola

; Brandão, Cynthia M. A.

; Vieira, José G.

Arquivos Brasileiros de Endocrinologia & Metabologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jun 2010, Volume 54 Nº 4 Páginas 352 - 361

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

OBJETIVO: Diante de um paciente portador de hiperparatiroidismo primário com indicação de tratamento cirúrgico, a localização pré-operatória da paratiroide é de fundamental importância para definir a melhor abordagem cirúrgica. MATERIAIS E MÉTODOS: A realização adicional de imagens SPECT e da cintilografia com 99mTc durante a cintilografia das paratiroides com Setamibi não é rotina em nosso meio, sendo comum a aquisição apenas das imagens planas − precoce (15 minutos) e tardia (2 horas). RESULTADOS: Na nossa experiência, tem-se percebido que a realização do protocolo completo contribui de maneira decisiva na sensibilidade da localização pré-operatória da paratiroide. CONCLUSÃO: A aplicação completa de todos os métodos cintilográficos disponíveis (SPECT e 99mTc) e a análise cuidadosa das imagens em um contexto multidisciplinar podem aumentar a acurácia da cintilografia das paratiroides.

OBJECTIVE: In patients with primary hyperparathyroidism, candidates for surgical intervention, the parathyroid pre-operative localization is of fundamental importance in planning the appropriate surgical approach. MATERIALS AND METHODS: The additional acquisition of SPECT and Technetium-99m images, during parathyroid scintigraphy with Sestamibi, is not common practice. Usually, only planar image acquisition, 15 minutes prior and 2 hours after radiopharmaceutical administration, is performed. RESULTS: In our experience, the complete protocol in parathyroid scintigraphy increases the accuracy of pre-operative parathyroid localization. CONCLUSION: The complete utilization of all available nuclear medicine methods (SPECT e 99mTc) and image interpretation in a multidisciplinary context can improve the accuracy of parathyroid scintigraphy.

9681 downloads

Exibindo

itens por página

Página de 2 Próxima

Selecione um ou mais resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Download CSV

Visualizar estatísticas de

Enviar resultado

E-mail do(s) destinatários*

Utilize ; (ponto e vírgula) para mais de um e-mail.

Enviar por e-mail

Esta página

Registros selecionados

Todos os registros (max. 300)

Alterar remetente, assunto e comentários

Seu email

Assunto

Comentários

Alterar remetente, assunto e comentários

Exportar resultados

Formato de exportação:

RIS (para EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citação

CSV (para Excel, etc)

Exportar:

Esta página

Itens selecionados

Todos os registros (max. 2000)

Mostrar mais

Sem resultados

Não foram encontrados documentos para sua pesquisa

Glossário e ajuda para busca

Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

Todo o conteúdo de www.scielo.org, exceto onde está identificado, está licenciado sob uma Licença Creative Commons.
saiba mais »