RESUMO -Neste estudo, as espécies capim-setária (Setaria anceps Stapf.), capim-hemárthria (Hemarthria altissima angolagrass. This showed that the increased capacity to dissipate the excessive energy to drive photosynthesis was satisfactory to maintain a low reduction state of the primary electron acceptor of the photosystem II (measured as qP). In general, ETR curves in response to increasing photosynthetic photon flux differed from control to stressed plants, especially for nilograss. In this species, a serious damage caused by water stress provoked a significant reduction to the efficiency of the electron transporters of PSII.
RESUMO -Quatro gramíneas forrageiras (Setaria anceps Stapf., Hemarthria altissima [Poir] Stapf. & Hubbard, Acroceras macrum Stapf. e Brachiaria purpurascens [Raddi] Henr.), foram estabelecidas por mudas, em vasos plásticos com diferentes condições hídricas, para se avaliar algumas características morfogênicas e estruturais. As irrigações foram controladas pela pesagem individual dos vasos e pela saturação relativa à porosidade total (SRPT) para cada nível hídrico do solo. Utilizou-se o delineamento de blocos casualizados, com três repetições, em que os tratamentos consistiram de quatro espécies, submetidas a quatro níveis hídricos: deficiência hídrica (50% de SRTP) (D); controle (100% de SRTP) (C); alagamento 1 (120% de SRTP) (A1) e alagamento 2 (150% de SRTP) (A2). Foram identificados três perfilhos basais vaso -1 , para as mensurações da morfogênese e das características estruturais das plantas: taxa de aparecimento de folhas individuais (TAP), filocrono de folhas individuais (FIL), taxa de alongamento de folhas individuais (TAL), comprimento final da lâmina foliar (CF), número total de folhas expandidas (FT) e número total de folhas verdes (FV). A TAL e o FIL foram inversamente proporcionais para o capim-setária, que apresentou resposta linear para a umidade no solo, enquanto os demais capins tiveram respostas quadráticas. O capim-hemárthria apresentou as maiores TAP para maior umidade do solo. O CF, aos 45 dias de rebrota, seguiu a tendência da TAL, com maiores valores para o capim-setária, alcançando até 0,34 m. O capim-hemárthria apresentou os maiores valores de CF entre as gramíneas de menor porte, em todos os níveis hídricos solo. Tanto o FT quanto o FV tiveram efeito significativo das gramíneas na interação com o nível hídrico dos vasos. O capim-hemárthria mostrou os maiores números de FT e FV em todos os níveis hídricos, com até 12 folhas perfilho -1 . As diferenças estruturais observadas entre as espécies estudadas poderiam ser úteis para a escolha dos materiais de acordo com a disponibilidade de áreas sujeitas a inundações ao longo do ano.Palavras-chave: Acroceras, alagamento, Brachiaria, Hemarthria, lâmina foliar, Setaria Morphogenic and Structural Responses of Tropical Forage Grasses to Different SoilMoisture Conditions ABSTRACT -Some morphogenic and structural characteristics of four forage grasses grown under four soil moisture conditions were assessed. The forage species were: Setaria anceps Stapf., Hemarthria altissima [Poir] Stapf. & Hubbard, Acroceras macrum Stapf. and Brachiaria purpurascens [Raddi] Henr. Soil moisture level was controlled by weighing individual pots and by relative saturation of total porosity (RSTP). A randomized block design with three replications was used. Four plants of each specie were submitted to four soil moisture levels: deficit (50% RSTP)(D), control (100% RSTP) (C), water logging 1 (120% RSTP) (W1) and water logging 2 (150% RSTP) (W2). Three tillers in each plastic pot were used for morphogenic and structural characteristics measurements of the plants: leaf a...
PURPOSE:To describe the dog as a model for studying laparoscopic correction of experimental diaphragmatic ruptures. METHODS:Five male dogs were used in this study. Under laparoscopic approach, a defect of 7cm was created on the left ventral insertion of the diaphragm. Fourteen days after this procedure, the abdomen was explored using laparoscopic access and the diaphragmatic defect was corrected with intracorporeal suture. The dislocated organs, surgical time, and suturing time were recorded. Analgesia and clinical condition were monitored during the postoperative period. RESULTS:All animals recovered well from the diaphragmatic rupture creation. After 14 days, abdominal organs (liver, spleen, omentum and/or intestine) were found inside the thoracic cavity in all animals. It was possible to reposition the organs and suture the defect by laparoscopic access in three animals. These animals showed excellent postoperative recovery. It was not possible to reposition the liver safely when it was friable. CONCLUSIONS:Laparoscopic creation of diaphragmatic rupture in dogs is feasible. Dogs are a good model for training and studying the correction of experimentally created diaphragmatic rupture by the laparoscopic approach. A friable liver is a complicating factor that should be taken into account. Animals submitted to laparoscopic correction showed excellent postoperative recovery.
Silva, et al.; Metastatic submandibular acantholytic squamous cell carcinoma in a dog. Braz J Vet Pathol, 2018, 11(1), 19 -23 DOI: 10.24070/bjvp.1983 Abstract A seven-year-old female mixed-breed dog was diagnosed with an uncommon histological variant of squamous cell carcinoma (SCC) with lymph node metastases. Therefore, the objective of this report was to describe the gross and microscopic findings of this uncommon SCC histological variant. Fine-needle aspiration cytology of the mass revealed a squamous cell carcinoma. On necropsy, the submandibular region revealed nodular, multifocal to coalescing, ulcerated masses with firm and fluctuant areas. Furthermore, enlarged submandibular and cervical lymph nodes with loss of normal architecture suggestive of metastasis were present. A definitive diagnosis of submandibular acantholytic squamous cell carcinoma was made upon histopathological evaluation. This variant is rare in humans and animals.
Em virtude do aumento da longevidade de cães e gatos, distúrbios de caráter senil têm sido mais recorrentes, como as neoplasias. A fim de se obter melhores resultados na terapêutica oncológica, surge a eletro quimioterapia (EQT) como tratamento localizado de tumores, que associa fármacos quimioterápicos a impulsos elétricos. Dessa forma, objetiva-se discutir os aspectos terapêuticos do emprego da EQT em animais de companhia, com destaque no melanoma oral, mastocitoma cutâneo e carcinoma de células escamosas. A EQT se caracteriza por apresentar eletroporação com intensidade de alta voltagem, tempo de aplicação ultracurto, com uso associado de quimioterápicos, como a bleomicina e cisplatina, para promoção de apoptose e necrose tecidual. É de extrema importância se ater a particularidades de cada espécie, a via de administração, o tamanho tumoral, a dosagem e os efeitos colaterais dos fármacos. Efeitos secundários imunológicos e vasculares, por lesão ao tecido endotelial e vasoconstrição, são apontados de forma benéfica no controle tumoral. Distintos eletrodos com diferentes configurações e recomendações de utilização podem ser empregados, como eletrodos em placa ou eletrodos agulha lineares, ou hexagonal. A técnica de EQT promete menores efeitos colaterais e intervenção menos invasiva, quando comparado com procedimento cirúrgico e radioterapia.
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