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Individual and concurrent effects of heat and drought stress on the growth and yield of two Malaysian rice cultivars
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Sethuraman, Gomathy

; Zain, Nurul Amalina Mohd

; Osman, Normaniza

; Ismail, Mohd Razi

; Mispan, Muhamad Shakirin

; Hanafiah, Noraikim Mohd

; Cheng, Acga

Chilean journal of agricultural research

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oct 2024, Volume 84 N. 5 Pages 709 - 717

Abstract: En | Text: En | PDF: En

ABSTRACT Heat and drought stress, which often co-occur due to water evaporation, are two major abiotic factors limiting the production of rice (Oryza sativa L.) It is crucial to enhance understanding of the effects of these abiotic stresses in rice, particularly for rice-producing countries like Malaysia, which has yet to achieve rice self-sufficiency. This greenhouse study was conducted to evaluate the morphological changes of two important Malaysian cultivars (‘MR219’ and ‘MR303’) at vegetative, reproductive, and ripening stages, as well as their physiological response and yield components under normal (control), heat, drought, and combined heat-drought stress conditions. Individual heat stress greatly influenced rice growth and yield, with significant differences (p < 0.01) observed across all examined parameters except the grain to leaf area index ratio (GtoLAI). Conversely, individual drought stress mostly affected yield-related parameters, with significant differences (p < 0.01) in grain weight (GW), harvest index (HI), and percentage of filled grain (%FG). Interestingly, the combined stresses in this study did not significantly affect plant height (PH) for all growth stages and most yield-related traits (HI, GW, and GtoLAI). The majority of the significant changes (p < 0.01) were observed on physiological traits, including chlorophyll a (Chl A) and b (Chl B). We found a positive correlation between HI and %FG (R2 = 0.3974**) under heat and drought stress, indicating that improving either of these traits can boost rice production. Collectively, our study revealed that the individual effects of heat and drought on rice growth and yield can differ from the effects of combined stress.

https://doi.org/10.4067/s0718-58392024000500709

Biomarcadores Potenciais na Fibrose Miocárdica: Uma Análise Bioinformática Miocárdica
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Cheng-Mei, Wang

; Luo, Gang

; Liu, Ping

; Ren, Wei

; Yang, Sijin

Arquivos Brasileiros de Cardiologia

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2024, Volume 121 N. 12 elocation e20230674

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Background Myocardial fibrosis (MF) occurs throughout the onset and progression of cardiovascular disease, and early diagnosis of MF is beneficial for improving cardiac function, but there is a lack of research on early biomarkers of MF. Objectives Utilizing bioinformatics techniques, we identified potential biomarkers for MF. Methods Datasets related to MF were sourced from the GEO database. After processing the data, differentially expressed genes were screened. Differentially expressed genes were enriched, and subsequently, protein-protein interaction (PPI) was performed to analyze the differential genes. The associated miRNAs and transcription factors were predicted for these core genes. Finally, ROC validation was performed on the core genes to determine their specificity and sensitivity as potential biomarkers. The level of significance adopted was 5% (p < 0.05). Results A total of 91 differentially expressed genes were identified, and PPI analysis yielded 31 central genes. Enrichment analysis showed that apoptosis, collagen, extracellular matrix, cell adhesion, and inflammation were involved in MF. One hundred and forty-two potential miRNAs were identified. the transcription factors JUN, NF-κB1, SP1, RELA, serum response factor (SRF), and STAT3 were enriched in most of the core targets. Ultimately, IL11, GADD45B, GDF5, NOX4, IGFBP3, ACTC1, MYOZ2, and ITGB8 had higher diagnostic accuracy and sensitivity in predicting MF based on ROC curve analysis. Conclusion Eight genes, IL11, GADD45B, GDF5, NOX4, IGFBP3, ACTC1, MYOZ2, and ITGB8, can serve as candidate biomarkers for MF. Processes such as cellular apoptosis, collagen protein synthesis, extracellular matrix formation, cellular adhesion, and inflammation are implicated in the development of MF. (MF disease function techniques database data screened subsequently proteinprotein (PPI Finally 5 p 0.05. 005 0.05 . 0 05 0.05) 9 3 apoptosis adhesion fortytwo forty two JUN NFκB1, NFκB1 NFκB NF κB1, κB1 κB NF-κB1 SP1 SP RELA SRF, SRF , (SRF) STAT targets Ultimately IL11 IL GADD45B GADDB GADD B GDF5 GDF NOX4 NOX IGFBP3 IGFBP ACTC1 ACTC MYOZ2 MYOZ ITGB synthesis formation 00 0.0 NF-κB (SRF IL1 0.

Resumo Fundamento A fibrose miocárdica (FM) ocorre durante o início e a progressão da doença cardiovascular, e o diagnóstico precoce da FM é benéfico para melhorar a função cardíaca, mas há uma falta de pesquisa sobre biomarcadores precoces da FM. Objetivos Utilizando técnicas de bioinformática, identificamos potenciais biomarcadores para FM. Métodos Os conjuntos de dados relacionados à FM foram obtidos do banco de dados Gene Expression Omnibus (GEO). Após o processamento dos dados, genes diferencialmente expressos foram rastreados. Genes diferencialmente expressos foram enriquecidos e, subsequentemente, interação proteína-proteína (PPI) foi realizado para analisar os genes diferenciais. Os miRNAs associados e fatores de transcrição foram previstos para esses genes centrais. Finalmente, a validação ROC foi realizada nos genes centrais para determinar sua especificidade e sensibilidade como potenciais biomarcadores. O nível de significância adotado foi de 5% (p < 0,05). Resultados Um total de 91 genes diferencialmente expressos foram identificados, e a análise PPI produziu 31 genes centrais. A análise de enriquecimento mostrou que apoptose, colágeno, matriz extracelular, adesão celular e inflamação estavam envolvidos na FM. Cento e quarenta e dois miRNAs potenciais foram identificados. Os fatores de transcrição JUN, NF-κB1, SP1, RELA, SRF e STAT3 foram enriquecidos na maioria dos alvos principais. Por fim, IL11, GADD45B, GDF5, NOX4, IGFBP3, ACTC1, MYOZ2 e ITGB8 tiveram maior precisão diagnóstica e sensibilidade na predição de FM com base na análise da curva ROC. Conclusão Oito genes, IL11, GADD45B, GDF5, NOX4, IGFBP3, ACTC1, MYOZ2 e ITGB8, podem servir como biomarcadores candidatos para FM. Processos como apoptose celular, síntese de proteína de colágeno, formação de matriz extracelular, adesão celular e inflamação estão implicados no desenvolvimento da FM. (FM cardiovascular cardíaca bioinformática GEO. GEO . (GEO) rastreados subsequentemente proteínaproteína (PPI diferenciais Finalmente 5 p 0,05. 005 0,05 0 05 0,05) 9 identificados 3 colágeno extracelular JUN NFκB1, NFκB1 NFκB NF κB1, κB1 κB NF-κB1 SP1 SP RELA STAT principais fim IL11 IL GADD45B GADDB GADD B GDF5 GDF NOX4 NOX IGFBP3 IGFBP ACTC1 ACTC MYOZ ITGB (GEO 00 0,0 NF-κB IL1 0,

https://doi.org/10.36660/abc.20230674

Evaluación preclínica y clínica de SOBERANA® 01. Candidato vacunal contra la COVID-19
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Climent Ruiz, Yanet

; Santana Mederos, Darielys

; PérezRodríguez, Sonia

; Rodríguez González, Meiby de la Caridad

; García Rivera, Dagmar

; Sánchez Ramírez, Belinda

; Valdés Balbín, Yury

; Vérez Bencomo, Vicente

; Rodríguez Noda, Laura M.

; Pérez Nicado, Rocmira

; Ochoa Azze, Rolando

; Boggiano Ayo, Tammy

; Valenzuela Silva, Carmen María

; González Rodríguez, Humberto

; Ramírez González, Ubel J.

; Paredes Moreno, Beatriz

; García Rivera, Daniel

; Labrada Regalado, Claudia

; Hernández García, Tays

; Noa Romero, Enrique

; Díaz Hernández, Marianniz

; OrosaVázquez, Ivette

; BergadoBáez, Gretchen

; Pi Estopiñán, Franciscary

; Hernández Salazar, Tamara

; Fariñas Medina, Mildrey

; Enriquez Puertas, Juliet María

; González Sosa, Nibaldo Luis

; González Delgado, Carlos A.

; Rubino Moreno, Jorman

; Díaz Machado, Alina

; González Freire, Yunior

; Esmoris Mena, Yudisleidy

; Rosales Gil, Lilia Beatríz

; Chappi Estévez, Yanet

; Amoroto Roig, Mayté

; Martínez Pérez, Marisel

; Ontiveiro Pino, Ivis

; Landys Chovel Cuervo, Mario

; Garrido Arteaga, Raine

; Cardoso San Jorge, Félix

; González Mugica Romero, Raúl

; Fernández Castillo, Sonsire

; Ojito Magaz, Eduardo

; Chiodo, Fabrizio

; Paquet, Francoise

; Fang, Cheng

; Guang-Wu, Chen

Anales de la Academia de Ciencias de Cuba

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dec 2023, Volume 13 N. 4 elocation e1512

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: SOBERANA® 01 was developed at the Finlay Vaccine Institute to combat the epidemic caused by the SARS-CoV-2 virus. This candidate is based on the Receptor Binding Domain (RBD) in dimeric form combined with purified vesicles from outer membrane of serogroup B meningococcus as immunopotentiator of the immune response adsorbed on aluminum hydroxide. Methods: The antigen was designed with the peculiarity of having a free cysteine at position 538, which allows the formation of RBD dimers. In preclinical studies it was evaluated the immunogenicity of the dimer combined with the outer membrane vesicles and they were performed toxicological studies. In addition, it was designed a Phase I clinical study in subjects from 19 to 59 years old. Results: The antigenic presentation in the form of dimer combined with the vesicles proved to be safe and immunogenic in animal models, observing a significant increase in the immune response when compared to the monomeric form. During the Phase I clinical evaluation, which included apparently healthy subjects between the ages of 19 and 59, it was demonstrated that SOBERANA® 01 lead to a significant increase in the neutralizing antibody response compared to the use of aluminum hydroxide as the sole adjuvant. After the third dose, 100% of the subjects seroconverted to the group immunized with SOBERANA® 01. Conclusions: It was demonstrated the immunogenicity and neutralizing capacity of the antibodies induced by SOBERANA® 01. The analysis of the sera of the vaccinated persons demonstrated that the formulation containing the OMVs causes a more potent neutralizing effect against several RBD mutants present in VOCs, including the RBD triple mutants of the beta variant.

RESUMEN Introducción: SOBERANA® 01 se desarrolló en el Instituto Finlay de Vacunas para el enfrentamiento a la epidemia causada por el virus SARS-CoV-2. Este candidato se basa en el dominio de unión al receptor en forma dimérica, combinado con vesículas purificadas de membrana externa de meningococo del serogrupo B como inmunopotenciador de la respuesta inmune adsorbidos en hidróxido de aluminio. Métodos: Se diseñó el antígeno con la peculiaridad de tener una cisteína libre en la posición 538, que permite la formación de dímeros del dominio de unión al receptor. En estudios preclínicos se evaluó la inmunogenicidad del dímero combinado con las vesículas de membrana externa y se realizaron estudios toxicológicos. Además, se diseñó un estudio clínico fase I en sujetos de 19 años a 59 años. Resultados: La presentación antigénica en forma de dímero combinado con las vesículas demostró ser segura e inmunogénica en modelos animales observando un incremento significativo de la respuesta inmune cuando se compara con la forma monomérica. Durante la evaluación clínica fase I, que incluyeron sujetos aparentemente sanos de entre 19 años y 59 años de edad, se demostró que SOBERANA® 01 conduce a un aumento importante en la respuesta de anticuerpos neutralizantes en comparación con el uso de hidróxido de aluminio como único adyuvante. Después de la tercera dosis, el 100 % de los sujetos seroconvirtieron en el grupo inmunizado con SOBERANA® 01. Conclusiones: Se demostró la inmunogenicidad y la capacidad neutralizante de los anticuerpos inducidos por SOBERANA® 01. El análisis de los sueros de las personas vacunadas demostró que la formulación que contiene las vesículas de membrana externa provoca un efecto neutralizante más potente contra varios mutantes del dominio de unión al receptor presentes en los COV, incluidos los mutantes triples del dominio de unión al receptor de la variante Beta.

Identification of Polymorphism in the MC1R Gene and Its Association with the Melanin Content in Feathers of Chinese Yellow Quails MCR MC R
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Qi, Y

; Zhang, X

; Pang, Y

; Yuan, B

; Cheng, J

Brazilian Journal of Poultry Science

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2023, Volume 25 N. 2 elocation eRBCA-2022-1648

Abstract: En | Text: En | PDF: En

ABSTRACT MC1R plays a crucial role in controlling the type of melanin synthesized in the melanocytes, which greatly affects plumage color in birds. One g.16796362G/T SNP was found in the MC1R gene coding region, which caused a Met120Ile mutation in the amino acid sequence. The Met120Ile mutation was located in the third transmembrane domain of the MC1R protein and decreased protein stability. The g.16796362G/T locus achieved medium polymorphism and had significant association with feather melanin content in Chinese yellow quails. The contents of total melanin and pheomelanin with AA genotype were significant lower than those with AB or BB genotypes in skin tissues, while the expression levels of MC1R mRNA had no significant difference in feathers with different genotypes. This experiment indicated that the Met120Ile mutation could affect the function of the MC1R protein and change the biosynthesis of melanin in Chinese yellow quails. MCR MC R melanocytes birds g16796362GT gGT g 16796362G T G region MetIle Met Ile sequence stability quails tissues GT

https://doi.org/10.1590/1806-9061-2022-1648

Pseudohypoaldosteronism type 1b in fraternal twins of a Chinese family: report of two cases and literature review b family
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Gao, Zhen

; Sun, Jingjing

; Cai, Cheng

; Gong, Xiaohui

; Ma, Li

Archives of Endocrinology and Metabolism

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2023, Volume 67 N. 4 elocation e000620

Abstract: En | Text: En | PDF: En

SUMMARY Here, we report the clinical observations of two Chinese fraternal twins who presented with severe dehydration, poor feeding, and absence of stimuli responses within a few days of birth. Trio clinical exome sequencing of the family identified compound heterozygous intronic variants (c.1439+1G>C and c.875+1G>A) in SCNN1A gene in these two patients. Sanger sequencing results showed that the c.1439+1G>C variant was inherited from the mother, and c.875+1G>A from the father, rarely reported in pseudohypoaldosteronism type 1 with sodium epithelial channel destruction (PHA1b) patients. Case 2 received timely symptomatic treatment and management after obtaining these results, which improved the clinical crisis. Our results suggest that the compound heterozygous splicing variants in SCNN1A were responsible for PHA1b in these Chinese fraternal twins. This finding extends the knowledge of the variant spectrum in PHA1b patients and highlights the application of exome sequencing in critically ill newborns. Finally, we discuss supportive case management, particularly in maintaining blood potassium concentration. Here dehydration feeding birth c14391GC cGC c 1439 1G C G c8751GA cGA 875 A SCNNA SCNN mother father PHAb PHA b (PHA1b crisis newborns Finally concentration GC 143 GA 87 14 8

https://doi.org/10.20945/2359-3997000000620

THE RELATIONSHIP BETWEEN JUMPING AND SPRINTING PERFORMANCE IN TEENAGE SPRINTERS
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Liang, Tseching

; Zhang, Biyu

; Cheng, Shih-Chung

; Sato, Kimitake

; Chen, Wenjia

; Zhang, Xue Bing

Revista Brasileira de Medicina do Esporte

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2023, Volume 29 elocation e2022_0010

Abstract: Es En Pt | Text: Es En Pt | PDF: Es | PDF: En | PDF: Pt

RESUMEN Objetivos: Este estudio tuvo como objetivo examinar la relación entre el salto vertical y la fuerza en tiempo específico y el desempeño del sprint en velocistas adolescentes. Métodos: Participaron en el estudio quince adolescentes varones velocistas (edades: 14 ± 2 años, estatura: 168 ± 2 cm, peso: 61 ± 1 kg). Los individuos realizaron los siguientes saltos bilaterales y unilaterales en una plataforma de fuerza: a) squat jump (SJ), b) SJ unilateral (USJ), c) drop jump (DJ) de 40 cm e d) DJ unilateral (UDJ) de 20 cm. La prueba de sprint de 60 m se realizó el segundo día. Los cronómetros en el entrenamiento fraccionado se ajustaron para registrar tiempos de 5 m, 10 m, 50 m y 60 m. Las variables que se incluyeron fueron la altura del salto vertical, la fuerza máxima y la salida de fuerza a 120 m en todos los saltos y mediciones del tiempo del sprint. Resultados: Los resultados del análisis de correlación producto-tiempo de Pearson revelaron que el SJ de 120 m estaba correlacionado con 5 m y el USJ de 120 m estaba correlacionado con 10 m. El UDJ de 120 m tuvo una mayor correlación con el DJ de 50 m que con el de 120 m. Aunque se observaron correlaciones significativas con la fuerza y la altura máximas, algunos resultados fueron inconsistentes entre los saltos bilaterales y unilaterales. Conclusiones: Nuestros resultados pusieron de manifiesto que los saltos con una forma similar a determinadas salidas de fuerza en un tiempo específico del evento pueden predecir con mayor precisión el desempeño en el sprint en adolescentes velocistas. El USJ de 120 m y el UDJ de 120 m pueden predecir mejor, respectivamente, la aceleración (10 m) y la fase de alta velocidad (50 m) en el desempeño del sprint. Además, los entrenadores y practicantes deben ser cautelosos a la hora de utilizar únicamente la altura del salto o la fuerza máxima para predecir el desempeño en el sprint, ya que los resultados pueden ser inexactos cuando no se tienen en cuenta con precisión las variables específicas del movimiento. Nivel de evidencia III. Objetivos Métodos edades (edades años estatura 16 peso 6 kg. kg . kg) SJ, , (SJ) b USJ, (USJ) c (DJ 4 d (UDJ día 12 Resultados productotiempo producto máximas Conclusiones mejor respectivamente (1 (5 Además movimiento III (SJ (USJ (

ABSTRACT Objectives: This study aimed to examine the relationship between vertical jumping at forces of specific time phase and sprint performance in teenage sprinters. Methods: Fifteen male teenage sprinters (age: 14±2 years, height: 168±2 cm, weight: 61±1 kg) participated in the study. The subjects performed the following bilateral/unilateral jumps on a force platform: a) squat jump (SJ), b) unilateral SJ (USJ), c) 40cm drop jump (DJ), and d) 20cm unilateral DJ (UDJ). The 60m sprint test was administered on the second day. Brower split timers were positioned to record subjects’ 5m, 10m, 50m and 60m split times. The variables for inclusion were vertical jump height, maximum force, and force output at 120ms in all jumps and sprint time measures. Results: The results of the Pearson Product Moment Correlation analysis showed that SJ120ms was correlated to 5m and USJ120ms was correlated to 10m. UDJ120ms showed a stronger correlation with 50m than DJ120ms. Although significant correlations using maximum force and height were observed, there were inconsistent results between bilateral and unilateral jumps. Conclusion: Our results highlighted that jumps that have similar form with certain force outputs at specific event timing could more precisely predict sprint performance in teenage sprinters. USJ120ms and UDJ120ms could better predict the acceleration (10m) and high-speed phase (50m) in sprint performance, respectively. Moreover, coaches and practitioners should be cautious when using only jump height or maximum force to predict sprint performance, since the results could be inaccurate when specific movement variables are not thoughtfully considered. Level of evidence III. Objectives Methods age (age 142 14 2 14± years 1682 168 168± cm weight 611 61 1 61± kg bilateralunilateral platform SJ, , (SJ) b USJ, USJ (USJ) c DJ, (DJ) d UDJ. UDJ . (UDJ) m day 10m times ms measures Results SJms USJms UDJms DJ120ms DJms observed Conclusion (10m highspeed high speed (50m respectively Moreover considered III 16 6 (SJ (USJ (DJ (UDJ

RESUMO Objetivos: Este estudo teve como objetivo examinar a relação entre o salto vertical e a força em tempo específico e o desempenho de sprint em velocistas adolescentes. Métodos: Quinze adolescentes velocistas do sexo masculino (idade: 14 ± 2 anos, estatura: 168 ± 2 cm, peso: 61 ± 1 kg) participaram do estudo. Os indivíduos realizaram os seguintes saltos bilaterais e unilaterais em uma plataforma de força: a) squat jump (SJ), b) SJ unilateral (USJ), c) drop jump (DJ) de 40 cm e d) DJ unilateral (UDJ) de 20cm. O teste de sprint de 60 m foi realizado no segundo dia. Os cronômetros rastreadores para treinos fracionados foram posicionados para registrar os tempos fracionados de 5 m, 10 m, 50 m e 60 m. As variáveis para inclusão foram altura do salto vertical, força máxima e saída de força a 120 m em todos os saltos e medidas de tempo do sprint. Resultados: Os resultados da análise da correlação produto-tempo de Pearson mostraram que o SJ de 120 m foi correlacionado com 5 m e USJ de 120 m foi correlacionado com 10 m. O UDJ de 120 m teve correlação mais forte com DJ de 50 m do que de 120 m. Embora tenham sido observadas correlações significativas com força e altura máximas, alguns resultados foram inconsistentes entre os saltos bilaterais e unilaterais. Conclusões: Nossos resultados destacaram que os saltos com forma semelhante a certas saídas de força no tempo específico do evento podem prever com mais precisão o desempenho no sprint em adolescentes velocistas. O USJ de 120 m e o UDJ de 120 m podem prever melhor, respectivamente, a aceleração (10 m) e a fase de alta velocidade (50 m) no desempenho no sprint. Além disso, treinadores e praticantes devem ser cautelosos ao usar apenas a altura do salto ou a força máxima para prever o desempenho no sprint, uma vez que os resultados podem ser imprecisos quando variáveis específicas do movimento não forem consideradas com precisão. Nível de evidência III. Objetivos Métodos idade (idade anos estatura 16 peso 6 kg SJ, , (SJ) b USJ, (USJ) c (DJ 4 d (UDJ 20cm dia 12 Resultados produtotempo produto máximas Conclusões melhor respectivamente (1 (5 disso III (SJ (USJ (

https://doi.org/10.1590/1517-8692202329022022_0010i

Establishment of a mouse pneumonia model under cold stress
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CHENG, Qian

; MAO, Yudi

; DING, Xiping

Food Science and Technology

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2022, Volume 42 elocation e52721

Abstract: En | Text: En | PDF: En

Abstract Simulating the cold living environment of the human body in winter, establishing a mouse model of pneumonia under single-factor cold stimulation to provide a basis and a new direction for further research on the relationship between cold and pulmonary inflammation. C57/BL6J mice were divided into three groups: A (initial control group), B (control group), and C (experimental group). They were randomly divided into 10 mice for each group, placed in an environment (temperature 22 ± 1 °C, humidity 50 ± 5%). After 3 weeks, mice in group A were sacrificed. Group C mice were exposed to environment (temperature 4 °C, humidity 50 ± 5%) for 8 h (9 am to 5 pm), and mice in group B were placed. (The temperature was 22 ± 1°C, humidity 50 ± 5%). The lungs of the mice in group A and B were normal. The inflammatory cells infiltrated in the mice in group C, and the alveolar structure disappeared. The neutrophil immunohistochemistry showed a significant increase in neutrophils and the percentage of blood neutrophils. Higher than group A and B (P < 0.05). The mice were stimulated daily for 8 hours at a temperature of 4 °C and humidity (50 ± 5) % for 30 days to establish a cold-stimulated pneumonia model.

https://doi.org/10.1590/fst.52721

Mejora del curso clínico de la cirrosis hepática por virus de hepatitis C posterior al tratamiento efectivo con antivirales de acción directa
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Cedrón-Cheng, Hugo

; Siccha Sinti, Christian

; Tagle Arróspide, Martín

Revista de Gastroenterología del Perú

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oct 2021, Volume 41 N. 4 Pages 257 - 260

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN Los antivirales de acción directa son drogas nuevas altamente efectivas y seguras para el tratamiento de la hepatitis C crónica. Sin embargo, a pesar de la erradicación del virus de hepatitis C en pacientes con cirrosis hepática descompensada, aun es controversial su efecto en la mejora del cuadro clínico, disminución de complicaciones asociadas, riesgo de desarrollo de hipertensión portal y hepatocarcinoma. Presentamos dos pacientes con cirrosis hepática descompensada Child B por hepatitis C quienes recibieron tratamiento con drogas antivirales de acción directa. Luego del tratamiento, y confirmada la carga viral indetectable - respuesta viral sostenida - ambos pacientes mostraron una mejora significativa del curso clínico de la cirrosis hepática - Child A - y disminución de los niveles de fibrosis hepática determinados por métodos no invasivos.

ABSTRACT Direct-acting antivirals are new drugs, highly effective and safe against chronic hepatitis C. However, despite of hepatitis C erradication in patients with decompensated liver cirrhosis, their effect in improving the clinical course, reducing liver-related complications and the risk of developing portal hypertension and hepatocellular carcinoma is still controversial. We present two patients with decompensated liver cirrhosis Child B due to hepatitis C who received treatment with direct-acting antiviral drugs. After treatment, and with the confirmation of undetectable viral load - sustained viral response - both patients showed significant improvement in the clinical course of liver cirrhosis - Child A - and a decrease in the amount of liver fibrosis measured with non invasive methods.

https://doi.org/10.47892/rgp.2021.414.1350

Location and Vascular Classification of 188 parathyroid glands in New Zealand White Rabbits
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Cao, W.

; Su, Y.

; Liu, N.

; Peng, Y.

; Diao, C.

; Cheng, R.

Arquivo Brasileiro de Medicina Veterinária e Zootecnia

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mar 2021, Volume 73 N. 2 Pages 377 - 382

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A função e proteção das glândulas paratireoidianas é um tópico de pesquisa cada vez mais popular. Coelhos brancos da Nova Zelândia são o modelo animal mais comumente usada para isquemia da paratireóide. Porém, informação sobre a vasculatura de suas glândulas paratireóides é limitada. Foram usados 94 coelhos brancos da Nova Zelândia saudáveis, com 3-4 meses de idade, 2-3kg de peso, para exploração das glândulas paratireóides, que foram coradas com hematoxilina e eosina (HE) após a remoção. Os seguintes tipos foram classificados de acordo com a relação entre a posição da glândula paratireoidiana inferior e a tireoide: Tipo A, Tipo Próximo, Tipo B e Tipo Distante. Houve 188 casos, 4 em que as glândulas paratireoidianas inferiores estavam localizadas próximas ao lado dorsal da tireoide (2.13%), 8 onde as glândulas paratireoidianas inferiores estavam localizadas superiores ao polo superior da tireoide (4.26%), 20 onde as glândulas paratireoidianas inferiores estavam localizadas paralelo à tireoide (10.64%) e 155 casos em que as glândulas paratireoidianas inferiores estavam localizadas inferiores ao polo inferior da tireoide (82.45%). A identificação da localização e a classificação da vasculatura das glândulas paratireóides em coelhos brancos da Nova Zelândia fornecerão um modelo anatômico para auxiliar em pesquisas futuras.

ABSTRACT The function and protection of the parathyroid glands are increasingly popular research topics. New Zealand white rabbits are the most commonly used animal model of parathyroid ischemia. However, information on the vasculature of their parathyroid glands is limited. We used 94 healthy New Zealand white rabbits, 3-4 months of age and 2-3kg in weight, for exploration of the parathyroid glands, which were stained using hematoxylin and eosin (HE) after removal. The following types were classified according to the relationship between the position of the inferior parathyroid gland and the thyroid: Type A, Close Type, Type B, and Distant Type. There were 188 cases, 4 where the inferior parathyroid glands were located near the dorsal side of thyroid (2.13%), 8 where the inferior parathyroid glands were located superior to the upper pole of the thyroid (4.26%), 20 where the inferior parathyroid glands were located parallel to the thyroid (10.64%), and 155 cases where the inferior parathyroid glands were located inferior to the lower pole of thyroid (82.45%). Identifying the location and classifying the vasculature of the parathyroid glands in New Zealand white rabbits will provide an anatomical model to assist in future research.

https://doi.org/10.1590/1678-4162-11760 213 downloads

10.

Effects of Glutamine on Lymphocyte Proliferation and Intestinal Mucosal Immune Response in Heat-Stressed Broilers
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Wu, QJ

; Liu, ZH

; Jiao, C

; Cheng, BY

; Li, SW

; Ma, Y

; Wang, YQ

; Wang, Y

Brazilian Journal of Poultry Science

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2021, Volume 23 N. 4 elocation eRBCA-2019-1207

Abstract: En | Text: En | PDF: En

ABSTRACT To investigate the protective effect of glutamine (Gln) on lymphocyte proliferation and the intestinal mucosal immune response in heat-stressed broilers, 360 21-day-old Arbor Acres (AA) broilers were assigned to 4 groups in a completely randomized design, each of which included 6 replicates with 15 birds per replicate for 21 days. The chickens were fed a basal diet under no stress (NS group), a basal diet under heat stress (HT group), or a basal diet under heat stress with the addition of either 0.5 % or 1.0 % Gln. The results showed that the broilers in the HT group exhibited fewer proliferating peripheral lymphocytes, a lower growth performance, phagocytic rate and index of neutrophils, fewer goblet cells in whole intestine and intraepithelial lymphocyte (IEL) cells in the ileum, a lower sIgA content in the duodenum and the jejunum, a lower immunoglobulin content of serum and intestinal mucosa, than those of the NS group (p<0.05). Diets supplemented with Gln increased growth performance, the number of proliferating peripheral lymphocytes, the phagocytic rate and phagocytic index of neutrophils, the number of whole intestine goblet cells and ileum IEL cells, the sIgA contents of the duodenum and the jejunum, and the immunoglobulin contents of serum and intestinal mucosa (p<0.05) in broilers exposed to HT. In conclusion, Gln can enhance intestinal immune function in broiler chickens by stimulating T and B lymphocyte proliferation, increasing the number of goblet cells and IEL cells, as well as increasing the content of sIgA and immunoglobulin secretion.

https://doi.org/10.1590/1806-9061-2019-1207 38 downloads

11.

Comparison of tooth movement and biological response resulting from different force magnitudes combined with osteoperforation in rabbits
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HUANG, Cheng-Yi

; LU, Hai-Ping

; YU, Yu-Feng

; DING, Xi

; ZHANG, Zan-Zan

; ZHANG, Jia-Nan

Journal of Applied Oral Science

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2021, Volume 29 elocation e20200734

Abstract: En | Text: En | PDF: En

Abstract Objective To compare tooth movement rate and histological responses with three different force magnitude designs under osteoperforation in rabbit models. Methodology 48 rabbits were divided into three groups: Group A, Group B, and Group C, with traction force of 50 g, 100 g, 150 g, respectively. Osteoperforation was performed at the mesial of the right mandibular first premolar, the left side was not affected. One mini-screw was inserted into bones between two central incisors. Coil springs were fixed to the first premolars and the mini-screw. Tooth movement distance was calculated, and immunohistochemical staining of PCNA, OCN, VEGF, and TGF-β1 was analyzed. Results The tooth movement distance on the surgical side was larger than the control side in all groups (P<0.01). No significant intergroup difference was observed for the surgical side in tooth movement distance among the three groups (P>0.05). For the control side, tooth movement distance in Group A was significantly smaller than Groups B and C (P<0.001); no significant difference in tooth movement distance between Group B and Group C was observed (P>0.05). On the tension area of the moving premolar, labeling of PCNA, OCN, VEGF and TGF-β1 were confirmed in alveolar bone and periodontal ligament in all groups. PCNA, OCN, VEGF and TGF-β1 on the surgical side was larger than the control side in all groups (P<0.001). Conclusion Osteoperforation could accelerate orthodontic tooth movement rate in rabbits. Fast osteoperforation-assisted tooth movement in rabbits was achieve with light 50 g traction.

https://doi.org/10.1590/1678-7757-2020-0734 558 downloads

12.

Effects of Glutamine on the Mucosal Structure and Immune Cells in the Intestines of Broiler Chickens Challenged with Salmonella Enteritidis
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Liu, Z

; Wu, Q

; Jiao, C

; Cheng, B

; Zhu, D

; Ma, Y

; Li, Y

; Li, W

Brazilian Journal of Poultry Science

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2020, Volume 22 N. 3 elocation eRBCA-2020-1270

Abstract: En | Text: En | PDF: En

ABSTRACT The aim of this study was to investigate the effects of glutamine (Gln) on the intestinal mucosal structure and immune cells of broilers infected with Salmonella Enteritidis. 160 1-d-old commercial Arbor Acres (AA) broilers were randomly selected to receive one of four treatments, each of which had 5 replicates. Each replicate consisted of 8 chicks subjected to a 21-d feeding trial. Group I served as the unchallenged (CON). All birds in groups II (SCC) - IV were challenged with 2.0 × 104 CFU/mL of S. Enteritidis. The birds in groups III and IV were treated with 0.5% and 1.0% Gln. The results showed that S. Enteritidis infection led to a decrease in the relative length and weight, villus height:crypt depth (VH:CD) of the jejunum and ileum, the number of intraepithelial lymphocyte cells, and number of goblet cells and an increase in the number of mast goblet cells compared with the measurements of these parameters in the CON group (p<0.05). In addition, the Gln groups had increased relative length and weight, VH:CD of the jejunum and ileum, numbers of intraepithelial lymphocyte cells, and numbers of goblet cells and decreased crypt depth in the jejunum and ileum and numbers of mast goblet cells compared with the measurements of these parameters in the SCC group (p<0.05). It was concluded that Gln added to broiler diets can effectively alleviate the intestinal mucosal damage caused by S. Enteritidis infection and improve its normal defense barrier function.

https://doi.org/10.1590/1806-9061-2020-1270 357 downloads

13.

Oblique penetration of tungsten alloy rod to finite-thickness metal plate
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Cheng, Chun

; Du, Zhonghua

; Chen, Xi

; Du, Chengxin

; Xu, Lizhi

; Wang, Xiaodong

Latin American Journal of Solids and Structures

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2019, Volume 16 N. 9 elocation e233

Abstract: En | Text: En | PDF: En

Abstract In order to study the critical ricochet velocity and critical penetration velocity of tungsten alloy rod obliquely penetrating a finite-thickness metal plate, experiment and numerical calculation of tungsten alloy rod impacting on homogeneous armor steel plate with a thickness of 30mm at an angle of 60° were carried out. Compared the experimental and numerical results with the results using models, it is found that, the results of the ricochet models proposed by Tate, Rosenberg and Steven B for semi-infinite thick plate are quite different from those of experiment and numerical calculation, so they can not be applied to the ricochet situation of finite-thickness plate. The critical penetration velocity model proposed by De Marre and Zhao are in good agreement with the numerical and experimental results, which can predict critical penetration velocity of tungsten alloy rod obliquely penetrating a finite-thickness metal plate with large impact angle. The penetration depth of the projectile under the critical ricochet velocity is about 1/3 of the thickness of the target plate, and the angle between the ejection trajectory of the fragments produced by projectile and target plate and projectile penetration trajectory is exactly 90° in the first penetration stage.

https://doi.org/10.1590/1679-78255724 1194 downloads

14.

The Effect of Thymosin Alpha 1 on Severe Acute Pancreatitis in Rats
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Qiu, ZL

; Wang, ZJ

; Huang, JK

; Dou, HH

; Zhen, CM

; Cheng, F

West Indian Medical Journal

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sep 2018, Volume 67 N. 3 Pages 238 - 242

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT Objective: To observe the effect of thymosin alpha l (Tα1) on severe acute pancreatitis (SAP) in rats. Methods: Twenty-four adult male Sprague-Dawley rats were randomly divided into three groups (eight in each group): control group (Group A), SAP group (Group B) and Tα1 treatment group (Group C). Animal models of SAP were made by retrograde injection of 5% sodium taurocholate into the biliopancreatic duct. Rats in Group C were treated with Tα1 (6 mg/kg) via intraperitoneal administration prior to SAP modelling. Eight rats in each group were sacrificed at 12 hours, respectively, after modelling. The serum levels of amylase, tumour necrosis factor-α (TNF-α), interleukin-lβ (IL-lβ and interleukin-6 (IL-6) were detected in each group. The pathological scores of the tissue in the pancreas head were observed by light microscopy. Results: The levels of serum amylase of Group B were 6378 ± 538 U/L, which were significantly higher than those (4587 ± 478 U/L) of Group C (p < 0.05). The levels of serum TNF-α of Group B were 360.32 ± 28.67 pg/mL, which were higher than those (269.99 ± 26.11 pg/mL) of Group C (p < 0.05). The levels of serum IL-lβ of Group B were 435.93 ± 36.00 pg/mL, which were higher than those (312.42 ± 17.89 pg/mL) of Group C (p < 0.05). The levels of serum IL-6 of Group B were 433.90 ± 28.36 pg/mL, which were higher than those (289.98 ± 23.00 pg/mL) of Group C (p < 0.05). The pancreatic pathological scores of Group B were 13.34 ± 2.19, which were higher than those (6.39 ± 1.86) of Group C (p < 0.05). Conclusion: Thymosin alpha 1 could decrease proinflammatory cytokines and reduce pancreas injury and had a protective effect in rats with SAP. This provides a new strategy for the clinical treatment of SAP.

RESUMEN Objetivo: Observar el efecto de la timosina alfa l (Tα1) sobre la pancreatitis aguda grave (PAG) en ratas. Métodos: Veinticuatro ratas Sprague-Dawley adultas machos fueron divididas aleatoriamente en tres grupos (ocho en cada grupo): grupo de control (grupo A), grupo de PAG (grupo B) y grupo de tratamiento con Tα1 (grupo C). Los modelos animales de PAG fueron creados mediante inyección retrógrada de taurocolato de sodio al 5% en el conducto biliopancreático. Las ratas del grupo C se trataron con Tα1 (6 mg/kg) via administración intraperitoneal antes del modelado de PAG. Las ocho ratas en cada grupo fueron sacrificadas a las 12 horas, respectivamente, después del modelado. Los niveles séricos de amilasa, factor-α de necrosis tumoral (TNF-α), interleucina-β (Il-β) e interleucina-6 (IL-6) fueron detectados en cada grupo. Las puntuaciones patológicas del tejido en la cabeza del páncreas fueron observadas mediante microscopía de luz. Resultados: Los niveles de amilasa sérica del grupo B fueron 6378 ± 538 U/L, y resultaron significativamente más altos (p < 0.05) que los niveles 4587 ± 478 U/L del grupo C. Los niveles séricos de TNF-α del grupo B fueron 360.32 ± 28.67 pg/mL, y resultaron ser más altos (p < 0.05) que los 269.99 ± 26.11 pg/mL del grupo C. Los niveles séricos de Il-β del grupo B fueron 435.93 ± 36.00 pg/mL, y fueron más altos (p < 0.05) que los 312.42 ± 17.89 pg/mL) del grupo C. Los niveles de suero IL-6 del grupo B fueron 433.90 ± 28.36 pg/mL, y resultaron ser más altos (p < 0.05) que los 289.98 ± 23.00 pg/mL del grupo C. Las puntuaciones patológicas pancreáticas del grupo B fueron 13.34 ± 2.19, y resultaron ser más altas (p < 0.05) que las puntuaciones 6.39 ± 1.86 del grupo C. Conclusión: La timosina alfa pudo disminuir las citoquinas proinflamatorias y reducir la lesión del páncreas, y tuvo un efecto protector en las ratas con PAG. Esto ofrece una nueva estrategia para el tratamiento clínico de PAG.

https://doi.org/10.7727/wimj.2016.233

15.

Analysis of influencing factors of severity in acute pancreatitis using big data mining
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Fei, Yang

; Liu, Xiao-qiang

; Gao, Kun

; Xue, Cheng-bin

; Tang, Liang

; Tu, Jian-feng

; Wang, Wei

; Li, Wei-qin

Revista da Associação Médica Brasileira

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may 2018, Volume 64 N. 5 Pages 454 - 461

Abstract: En | Text: En | PDF: En

SUMMARY OBJECTIVES To evaluate the epidemiological characteristics of acute pancreatitis (AP) and explore potential relationships between these factors and severity. METHODOLOGY Data-sets of 5,659 patients with AP from health statistics and the Information Center of Jiangsu province, between 2014 and 2016, were analyzed. A self-organizing map (SOM) neural network was used for data clustering. RESULTS Biliary acute pancreatitis (BAP) (86.7%) was the most frequent etiological factor. A total of 804 (14.2%) patients had severe acute pancreatitis (SAP). The mean age of patients was 53.7 + 17.3 (range 12~94y). Most of the AP patients were married (75.4%); 6% of mild /moderately severe AP (MAP/MASP) patients were unmarried, which was less than SAP patients (P=0.016). AP patients with blood type AB in the general population (8.8%) was significantly lower than that of AP cases (13.9%) (P=0.019) and SAP cases(18.7%) (P=0.007). The number of AP patients in southern Jiangsu was much higher than that in northern Jiangsu province, especially in Nanjing (1229, 21.7%). The proportion of acute alcoholic pancreatitis (AAP) in the north of Jiangsu (Xuzhou 18.4%) was much higher than that in southern Jiangsu (Suzhou 2.6%). The whole sample was divided into five classes by SOM neural network. If BAP patients were male, old, divorced, and blood type AB or B, they were more likely to develop SAP. Middle-age, unmarried or divorced male patients with blood type B/AB who suffered from HAP or AAP were also more likely to develop SAP. CONCLUSIONS The number of unmarried patients with MAP/MASP was smaller than that of SAP. Blood types AB and B were more frequent in AP, especially in SAP. The differences between southern Jiangsu and northern Jiangsu, in number of AP patients and the proportion of AAP, were significant. In class I and class IV, the ratio of SAP was much higher than in other classes and the whole sample.

https://doi.org/10.1590/1806-9282.64.05.454 966 downloads

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