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Bonacina Cristine,Nascimento Andressa Bezerra,Barbosa Letícia Neris,de Souza Silvia Graciele Hülse,Magalhães Hélida Mara 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.2
During cultivation, environmental factors can cause changes in the metabolism of Curcuma longa L. that limit its development. This study evaluated the efects of diferent sodium chloride (NaCl) concentrations on the leaf anatomy, stomatal features, and biochemical activity of C. longa L. plants. The experiment was conducted in a greenhouse, using rhizomes of C. longa L. planted in plastic pots containing soil, sand, and organic matter (2:1:1). After 180 days of planting, salt stress using NaCl (50, 100, and 150 mM) was induced and a control treatment was made with water. At 150 days post treatment, the morphoanatomical variables of the leaves were evaluated, and biochemical analyses of the leaves and rhizomes were performed. The leaves exposed to intermediate salt concentrations (50 and 100 mM) had fewer hypodermic cells and larger spaces between the cells in the spongy parenchyma. In the 150 mM NaCl group, there was an increase in the total leaf thickness caused by an increase in hypodermic cells. The percentage of closed stomata increased in the 50 mM (85%) and 100 mM (80%) NaCl treatments, and the polar diameter of the cells (1.22%) was reduced in the presence of 150 mM NaCl. Biochemical analyses revealed diferent responses for rhizomes and leaves. The total sugars in the rhizomes increased in the presence of ≥50 mM NaCl, probably because of the need to generate more energy for use in secondary metabolite synthesis pathways. The antioxidative activity and phenolic compounds also increased at the highest NaCl concentrations. In conclusion, we have classifed C. longa L. as a plant that is tolerant to saline stress, owing to the metabolic balance and water-loss barrier provided by the rhizome to mitigate stress damage. Our results showed that C. longa L. plants were tolerant to the high salt concentrations tested in this study (100 and 150 mM).
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Lauren N. Spezia Adachi,Rafael Vercelino,Carla de Oliveira,Vanessa L. Scarabelot,Andressa de Souza,Liciane F. Medeiros,Stefania G. Cioato,Wolnei Caumo,Iraci L.S. Torres 사단법인약침학회 2018 Journal of Acupuncture & Meridian Studies Vol.11 No.3
The present study aimed to determine whether isoflurane interferes with the analgesiceffects of acupuncture (Ac) and electroacupuncture (EA), using a neuropathic pain(NP) rat model. In total, 140 male Wistar rats were used; isoflurane-induced nociceptiveresponse was evaluated using the von Frey test, serum calcium-binding protein b (S100b)levels and nerve growth factor (NGF) levels in the left sciatic nerve. The NP model wasinduced by chronic constriction injury of the sciatic nerve at 14 days after surgery. Treatment was initiated after NP induction with or without isoflurane anesthesia (20 min/day/8 days). The von Frey test was performed at baseline, 14 days postoperatively, andimmediately, 24 h, and 48 h after the last treatment. Results of the nociceptive test andthree-way analysis of variance were analyzed by generalized estimating equations, theBonferroni test, followed by StudenteNewmaneKeuls or Fisher’s least significant differencetests for comparing biochemical parameters (significance defined as p 0.05). Atbaseline, no difference was noted in the nociceptive response threshold among allgroups. Fourteen days after surgery, compared with other groups, NP groups showed adecreased pain threshold, confirming establishment of NP. Ac and EA enhanced the mechanicalpain threshold immediately after the last session in the NP groups, without anesthesia. Isoflurane administration caused increased nociceptive threshold in all groups,and this effect persisted for 48 h after the last treatment. There was an interaction betweenthe independent variables: pain, treatments, and anesthesia in serum S100b levelsand NGF levels in the left sciatic nerve. Isoflurane enhanced the analgesic effects of Acand EA and altered serum S100b and left sciatic nerve NGF levels in rats with NP.
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