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- 저자 : Luiz A. Alves (검색결과 2 건)
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Chemical Profile and Antinociceptive Efficacy of Rheedia longifolia Leaf Extract
José A.A. Santos,Andrea Calheiros,Diogo D. Nascimento,Ana Luiza R. Bérenger,Fábio C. Amendoeira,Hugo C. Castro-Faria-Neto,Maria Raquel Figueiredo,Luiz A. Alves,Valber da Silva Frutuoso 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.9
Different species of the family Clusiaceae, including Rheedia longifolia, are used in folk medicine to treat inflammatory diseases. This family is largely distributed in tropical and subtropical areas of Brazil, but their chemical and pharmacological properties have been the subject of a few studies. In previous studies, we found that the aqueous extract from R. longifolia leaves presented important anti-inflammatory and analgesic activity. We investigated the chemical profile of R. longifolia and characterized the pharmacological effect of different chemically identified fractions in pharmacological models of neurogenic and inflammatory nociception. The pharmacological tests showed that oral treatment with aqueous crude extract and fractions of methanol extract of R. longifolia leaf induced a significant antinociceptive effect using von Frey filaments. In addition, the most polar fractions presented antinociceptive activity in a neurogenic model of nociception (capsaicin model). The chromatographic analysis indicated the presence of bisflavonoids in the fractions obtained from the methanol extract. These results suggest that bisflavonoids found in methanol-extracted fractions are involved in the inhibition of inflammatory and neurogenic nociception. It is important that the R. longifolia aqueous extract treatment inhibited ulcer formation induced by indomethacin, suggesting an anti-ulcerogenic activity closely associated with its analgesic effect.
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Silva Flavia Adriane de Sales,Valadares Filho Sebastião de Campos,Costa e Silva Luiz Fernando,Fernandes Jaqueline Gonçalves,Lage Bruno Corrêa,Chizzotti Mario Luiz,Felix Tara Louise 아세아·태평양축산학회 2021 Animal Bioscience Vol.34 No.4
Objective Objectives were to estimate energy and protein requirements of dairy crossbred steers, as well as to evaluate equations previously described in the literature (HH46 and CS16) to predict the carcass and empty body chemical composition of crossbred dairy cattle. Methods Thirty-three Holstein×Zebu steers, aged 19±1 months old, with an initial shrunk body weight (BW) of 324±7.7 kg, were randomly divided into three groups: reference group (n = 5), maintenance level (1.17% BW; n = 4), and the remaining 24 steers were randomly allocated to 1 of 4 treatments. Treatments were: intake restricted to 85% of ad libitum feed intake for either 0, 28, 42, or 84 d of an 84-d finishing period. Results The net energy and the metabolizable protein requirements for maintenance were 0.083 Mcal/EBW0.75/d and 4.40 g/EBW0.75, respectively. The net energy (NEG) and protein (NPG) requirements for growth can be estimated with the following equations: NEG (Mcal/kg EBG) = 0.2973(±0.1212) ×EBW0.4336(±0.1002) and NPG (g/d) = 183.6(±22.5333)×EBG−2.0693(±4.7254)×RE, where EBW, empty BW; EBG, empty body gain; and RE, retained energy. Crude protein (CP) and ether extract (EE) chemical contents in carcass, and all the chemical components in the empty body were precisely and accurately estimated by CS16 equations. However, water content in carcass was better predicted by HH46 equation. Conclusion The equations proposed in this study can be used for estimating the energy and protein requirements of crossbred dairy steers. The CS16 equations were the best estimator for CP and EE chemical contents in carcass, and all chemical components in the empty body of crossbred dairy steers, whereas water in carcass was better estimated using the HH46 equations. Objective: Objectives were to estimate energy and protein requirements of dairy crossbred steers, as well as to evaluate equations previously described in the literature (HH46 and CS16) to predict the carcass and empty body chemical composition of crossbred dairy cattle.Methods: Thirty-three Holstein × Zebu steers, aged 19 ± 1 months old, with an initial shrunk body weight of 324 ± 7.7 kg, were randomly divided into three groups: reference group (n = 5), maintenance level (1.17% BW; n = 4), and the remaining 24 steers were randomly allocated to 1 of 4 treatments. Treatments were: intake restricted to 85% of <i>ad libitum</i> feed intake for either 0, 28, 42, or 84 d of an 84-d finishing period.Results: The net energy and the metabolizable protein requirements for maintenance were 0.083 Mcal/EBW<sup>0.75</sup>/d and 4.40 g/EBW<sup>0.75</sup>, respectively. The net energy (NE<sub>G</sub>) and protein (NP<sub>G</sub>) requirements for growth can be estimated with the following equations: NE<sub>G</sub> (Mcal/kg EBG) = 0.2973<sub>(± 0.1212)</sub> × <i>EBW</i><sup>0.4336(± 0.1002)</sup> and NP<sub>G</sub> (g/d) = 183.6<sub>(± 22.5333)</sub> × EBG – 2.0693<sub>(± 4.7254)</sub> × RE, where EBW = empty body weight, EBG = empty body gain, and RE = retained energy. Crude protein (CP) and ether extract (EE) chemical contents in carcass, and all the chemical components in the empty body were precisely and accurately estimated by CS16 equations. However, water content in carcass was better predicted by HH46 equation.Conclusion: The equations proposed in this study can be used for estimating the energy and protein requirements of crossbred dairy steers. The CS16 equations were the best estimator for CP and EE chemical contents in carcass, and all chemical components in the empty body of crossbred dairy steers, whereas water in carcass was better estimated using the HH46 equations.
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