- Research Article
- 10.1016/j.theriogenology.2026.117907
Effect of recombinant equine chorionic gonadotropin on fertility of lactating dairy cows.
- Jul 01, 2026
- Theriogenology
- P D Carvalho + 11 more +11
Publications from 2021 to 2026
Showing 10 of 114 papers
Effect of recombinant equine chorionic gonadotropin on fertility of lactating dairy cows.
In vitro evaluation of a decellularized human fetal skin-derived scaffold repopulated with human amniotic fluid stem cells for potential application in myelomeningocele repair.
Myelomeningocele (MMC) is the most common congenital defect of the central nervous system, which results in devastating and lifelong disability. In MMC, the initial failure of neural tube closure early in gestation is followed by a progressive prenatal injury to the exposed spinal cord, contributing to the deterioration of neurological function in fetuses. Amniotic fluid, collected during intrauterine correction of MMC, has been investigated as a new cell source for stem cells in the development of future cell-based transplantation. Human amniotic fluid stem cells (hAFSCs) adhered on decellularized scaffolds can be an option for tissue regeneration and restoring spinal cord injury. This study evaluated a protocol for decellularizing human fetal skin (also collected during MMC corrective surgery) to create an extracellular matrix (dECM) scaffold and its subsequent recellularization with human amniotic fluid stem cells (hAFSCs). The successful adherence and viability of hAFSCs on the dECM scaffold demonstrated its potential as an in vitro tissue model for mechanical support and cell development. The findings of this study have significant implications for future MMC repair applications, as they describe viable morphological characteristics for using dECM scaffolds recellularized with hAFSCs as a potential therapy for MMC.
Read moreRATIONALIZATION OF CARBAPENEM USE AND REDUCTION OF BACTERIAL RESISTANCE: IMPACT OF A STEWARDSHIP PROGRAM IN AN INTENSIVE CARE UNIT
Reprodutibilidade inter- e intra-observador das classificações da fratura do maléolo posterior
Objetivos: avaliar a reprodutibilidade intra- e inter-observador de 3 classificações das fraturas do maléolo posterior (FMP) e analisar a relação da escolha do tratamento e a abordagem cirúrgica com as classificações. Métodos: Imagens de TC do tornozelo de 50 pacientes foram avaliados por 10 observadores, sendo 4 especialistas em pé e tornozelo e 6 ortopedistas, com um intervalo de duas semanas entre as avaliações. Os avaliadores classificaram as FMP de acordo com as classificações de Mason, Haraguchi e Bartoníček/Rammelt, e julgaram se as fraturas eram de tratamento conservador ou cirúrgico (neste caso, por qual a via de acesso tratariam). Para a concordância intra-observador foi utilizado o Alfa de Cronbach e para a avaliação inter-observador, o Teste de Kappa. A correlação da tomada de decisão e via de acesso foram analisadas utilizando o Teste do Qui-Quadrado (Q²). Resultados: A reprodutibilidade intra-observador em toda a amostra variou de 0.53 a 0.95 (0.78 +- 0.12) para a classificação de Haraguchi, de 0.47 a 0.95 (0.74 +- 0.17) para Mason, e de 0.53 a 0.94 (0.72 +- 0.12) para Bartoníček/Rammelt, representando uma concordância adequada para as três classificações. Para os especialistas, a média para as classificações de Haraguchi, Mason e Bartoníček/Rammelt foram 0.86, 0.84 e 0.75, representando uma classificação boa, boa e adequada, respectivamente. Para o grupo de não especialistas, essa média resultou em 0.72, 0.68 e 0.70, representando uma classificação adequada, média e adequada, respectivamente. A reprodutibilidade inter-observador foi considerada razoável para Haraguchi (0.38) e moderado para Mason (0.42) e Bartoníček/Rammelt (0.43). Ao analisarmos a tomada de decisão e a via de acesso, todas as classificações demonstraram tamanho de efeito grande (V>0.50). Conclusão: As classificações de Haraguchi, Mason e Bartoníček/Rammelt para as FMP tiveram uma reprodutibilidade intra-observador considerada adequada. A reprodutibilidade inter-observador foi considerada razoável ou moderada. Todas as três classificações demonstraram efeitos considerados grandes para decisão entre não-operar ou operar e a decisão sobre a via de acesso, sendo a classificação de Bartoníček/Rammelt a que apresentou os valores mais elevados. Palavras-chave: Classificação; Fraturas do Tornozelo; Reprodutibilidade do Resultado. Nível de evidência IV, Estudos terapêuticos, Série de casos.
Read moreO manejo da dor crônica através da administração de canabidiol
Cognitive Deficits in Spinocerebellar Ataxia Type 2: A Comparative Analysis of Pre-ataxic and Ataxic Stages.
Spinocerebellar ataxia type 2 (SCA2) is a neurodegenerative disorder characterized by cerebellar motor symptoms. The extent and timing of cognitive involvement, particularly in pre-ataxic carriers, remain unclear.To assess cognitive performance across clinical stages of SCA2 and investigate early neurocognitive changes in pre-ataxic individuals.We evaluated 52 genetically confirmed participants from a rural Brazilian cohort: 16 pre-ataxic carriers, 12 symptomatic patients, and 24 intrafamilial controls. A standardized neuropsychological battery assessed global cognition, executive function, memory, visuospatial abilities, attention/working memory, mood, and language. Group comparisons and correlations were adjusted using False Discovery Rate (FDR) correction.Pre-ataxic carriers performed comparably to their intrafamilial controls across all cognitive domains, with no significant group differences except for the FAB total score, and showed no associations with estimated time to disease onset.Executive dysfunction emerged as the most prominent cognitive feature of manifest SCA2 and was more strongly associated with CAG repeat length than with clinical disease markers. In this genetically and environmentally homogeneous cohort, only limited measurable cognitive impairment was observed in pre-ataxic carriers. These findings underscore the importance of longitudinal and multimodal studies to elucidate the timing and underlying mechanisms of cognitive decline in SCA2.
Read moreCOMPETÊNCIA DO ENFERMEIRO HEMODINAMICISTA NA RETIRADA DO INTRODUTOR ARTERIAL
O serviço de hemodinâmica destina-se a métodos diagnósticos e terapêuticos intervencionistas em diferentes áreas, especialmente a cardiologia. A retirada do introdutor arterial após procedimentos coronários percutâneos diagnósticos e terapêuticos pode ser realizada por profissional enfermeiro, em pacientes submetidos a intervenções coronárias percutâneas. O enfermeiro tem papel fundamental na equipe de hemodinâmica, garantindo a segurança na retirada do introdutor arterial com segurança garantida ao paciente. No Brasil a retirada de introdutores arteriais e venosos pelos médicos residentes é prática comum e, em algumas instituições pelo enfermeiro. Porém, conclui-se com base na literatura especializada e na legislação vigente, que o Enfermeiro deverá possuir competência e habilitação para proceder à retirada de cateter introdutor arterial ou venoso, em pacientes submetidos a intervenções coronárias percutâneas possuindo amparo legal para o desempenho da função. E, deve ainda avaliar, criteriosamente, sua competência técnica, científica e ética visando assegurar uma assistência de enfermagem livre de danos decorrentes de imperícia, negligência ou imprudência. Importante, porém, protocolizar e dispor a informação para a equipe de enfermagem contribuindo para autonomia do enfermeiro e segurança do paciente. Entretanto, conclui-se que este procedimento pode ser realizado com sucesso por profissional de enfermagem em uma unidade hemodinâmica. Portanto, este trabalho tem como objetivo avaliar a competência do Enfermeiro na retirada do introdutor arterial pós-cateterismo e angioplastia coronária por meio da literatura nacional e internacional. Este estudo caracteriza-se como revisão bibliográfica, de caráter exploratório acerca da assistência de enfermagem no procedimento de retirada do introdutor arterial como competência do Enfermeiro Hemodinamicista.
Read moreIn Reply to the Letter to the Editor Regarding "Pathogenic Variants and Prognosis in Meningiomas: A Systematic Review and Meta-Analysis".
Full-Endoscopic Decompression for Congenital Spinal Stenosis Caused by Diastrophic Dysplasia in a 13-year-old Pediatric Patient: A Case Report
Introduction: Diastrophic dysplasia (DTD) is a rare disorder that affects the development of cartilage and bone. It is an autosomal recessive skeletal dysplasia that results in short stature with limb shortening, contractures of large joints, spinal deformities, cleft palate, clubfoot, cystic swelling of the external ear, and deformities of the hands. The spine frequently develops excessive lumbar lordosis, cervical and thoracolumbar kyphosis, and scoliosis. Spinal stenosis can also be found, but it is less commonly reported. Case presentation: This study aims to present a case of congenital spinal stenosis caused by DTD causing conus medullaris syndrome in a pediatric patient, which was treated with a full endoscopic bilateral over-the-top interlaminar technique. The patient achieved complete symptomatic recovery without any perioperative complications from the procedure. Conclusion: This is the first report of a full endoscopic decompression for spinal stenosis caused by DTD in the literature. Also, this is the first report of full endoscopic decompression for congenital spinal stenosis in a pediatric patient. Level of evidence IV; Case Series.
Read moreEvaluation of Collagen Supplements to Reduce the Occurrence of Orthopedic Injuries in Trained Foals
Hydrolyzed collagen is a popular supplement for equine joint health due to its potential role in cartilage metabolism and tissue repair. However, scientific validation of its efficacy remains limited. This study aimed to evaluate the effect of hydrolyzed collagen supplementation in the diet of trained foals on the occurrence of orthopedic injuries and joint changes. Twenty Mangalarga Marchador foals were used and randomly allocated to either a collagen supplementation group (50 g/day for 180 days) or a control group. During this period, the foals were exercised five consecutive days per week. Every 36 days, the hock region was evaluated by radiography and ultrasonography. The concentrations of prostaglandin E2 (PGE2) and glycosaminoglycans (GAGs) in the articular synovial fluid were also measured. For imaging parameters, the data were analyzed using non-parametric Kruskal–Wallis tests. For synovial fluid parameters, the data were subjected to analysis of variance, and the means were compared using Tukey's test, with a significance level set to 0.05. Significant differences (P < 0.05) were observed in radiographic, ultrasonographic, and synovial fluid parameters, indicating reduced inflammation and joint degeneration in the supplemented group. It is concluded that hydrolyzed collagen supplementation reduced inflammation and joint degeneration in trained foals without altering joint homeostasis. The significance of this finding is substantial, as it proposes a nutritional strategy to prevent joint disorders while reducing reliance on invasive interventions. However, further research involving extended follow-up and varied supplementation protocols is critical to confirm the sustainability of these outcomes and validate the long-term efficacy of this approach.
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