• Title, Summary, Keyword: everted intestine sac

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Gintonin absorption in intestinal model systems

  • Lee, Byung-Hwan;Choi, Sun-Hye;Kim, Hyeon-Joong;Park, Sang-Deuk;Rhim, Hyewhon;Kim, Hyoung-Chun;Hwang, Sung-Hee;Nah, Seung-Yeol
    • Journal of Ginseng Research
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    • v.42 no.1
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    • pp.35-41
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    • 2018
  • Background: Recently, we identified a novel ginseng-derived lysophosphatidic acid receptor ligand, called gintonin. We showed that gintonin induces $[Ca^{2+}]i$ transient-mediated morphological changes, proliferation, and migration in cells expressing lysophosphatidic acid receptors and that oral administration of gintonin exhibits anti-Alzheimer disease effects in model mice. However, little is known about the intestinal absorption of gintonin. The aim of this study was to investigate gintonin absorption using two model systems. Methods: Gintonin membrane permeation was examined using a parallel artificial membrane permeation assay, and gintonin absorption was evaluated in a mouse everted intestinal sac model. Results: The parallel artificial membrane permeation assay showed that gintonin could permeate an artificial membrane in a dose-dependent manner. In the everted sac model, gintonin absorption increased with incubation time (from 0 min to 60 min), followed by a decrease in absorption. Gintonin absorption into everted sacs was also dose dependent, with a nonlinear correlation between gintonin absorption and concentration at 0.1-3 mg/mL and saturation at 3-5 mg/mL. Gintonin absorption was inhibited by the Rho kinase inhibitor Y-27632 and the sodiumeglucose transporter inhibitor phloridzin. Moreover, lipid extraction with methanol also attenuated gintonin absorption, suggesting the importance of the lipid portion of gintonin in absorption. This result shows that gintonin might be absorbed through passive diffusion, paracellular, and active transport pathways. Conclusion: The present study shows that gintonin could be absorbed in the intestine through transcellular and paracellular diffusion, and active transport. In addition, the lipid component of gintonin might play a key role in its intestinal absorption.

Effect of Layer-by-Layer (LbL) Encapsulation of Nano-Emulsified Fish Oil on Their Digestibility Ex Vivo and Skin Permeability In Vitro

  • Jung, Eun Young;Hong, Ki Bae;Son, Heung Soo;Suh, Hyung Joo;Park, Yooheon
    • Preventive Nutrition and Food Science
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    • v.21 no.2
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    • pp.85-89
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    • 2016
  • Omega-3 rich fish oils are extremely labile, thus requiring control of oxidation and off flavor development. A recently proposed emulsification method, layer-by-layer (LbL) deposition, was found to be a plausible method to enhance the characteristics of bioactive ingredients, especially lipids. The present work was designed to test the possibility of enhancing the uptake and utilization of omega-3 fatty acids present in fish oil. The bioavailability of nano-emulsified fish oil was monitored in terms of intestinal absorption as well as skin permeability by using the everted intestinal sac model and Franz cell model. The skin permeability and intestinal absorption characteristics was significantly improved by LbL emulsification with lecithin/chitosan/low methoxypectin. Multilayer encapsulation along with nano-emulsification can be a useful method to deliver biologically active lipids and related components, such as fish oil. The protective effect of this tool from lipid oxidation still needs to be verified.

Effect of Gaewool-Whadam-Jian on Transport Ability of Small Intestine and Secretion of Gastric Juice in the Rat (개울화담전(開鬱化痰煎)이 흰쥐 소장(小腸) 수송능(輸送能)과 위액분비에 미치는 영향)

  • Kim Hee-Chul;Lee Young-Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.19 no.5
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    • pp.1330-1336
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    • 2005
  • This study was carried out to investigate the motor activity and glucose transport and metabolism of Gaewool-Whadam-Jian(GWJ) in rat gastro-intestinal tract. The motor activity of the rat gastro-intestinal tract has been investigated by means of measuring barium sulfate passage degrees. Atropine treatment significantly delayed barium sulfate transit, and GWJ pretreatment increased intestinal motor activity, but not significant. GWJ administration showed no toxicity to kidney and liver. Transport and metabolism of glucose were studied in everted sac of rat small intestine with incubation under several conditions. The transport and metabolism of glucose were greater at jejunum than ileum. So, everted jejunum of rat were used to study the effect of GWJ. When GWJ were treated, the concentration of glucose were higher than untreated group. This result was thought to be influenced by the glucose in GWJ. When 2, 4 dinitrophenol and phlorizin were treated, the transport and metabolism of glucose were decreased, but GWJ treated together, the concentration of glucose in serosal solution increased. Gastric juice secretion and total acidity significantly decreased by administration of GWJ through duodenum region. The mechanism of effect of GWJ was still unidentified, Dut through continuous investigation, the effect of GWJ should be investigated.

The Effect of Jiaweizhengqi-tang on Motor Activity, Glucose Transport and Metabolism in Rat Small Intestine (가미정기탕(加味正氣湯)이 흰쥐 소장의 수송능과 글루코스 이동 및 대사에 미치는 영향)

  • Park, Gyu-Taek;Kim, Woo-Hwan;Moon, Sun-Young;Cho, Su-In
    • The Journal of Internal Korean Medicine
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    • v.22 no.3
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    • pp.397-403
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    • 2001
  • Objectives; This study was carried out to investigate the motor activity, glucose transport and metabolism of Jiaweizhengqi-tang(JKT) in rat small intestine. Methods ; The motor activity of the rat small intestine has been investigated by means of measuring barium sulfate passage degrees. Transport and metabolism of glucose were studied in everted sac of rat small intestine with incubation under several conditions. Results; Atropine treatment significantly delayed barium sulfate transit, and JKT pretreatment increased intestinal motor activity, but not significant. JKT administration showed renal toxicity in animal experiment, so clinical safety should settled to use commonly. The transport and metabolism of glucose were greater at jejunum than ileum. So, everted jejunum of rat were used to study the effect of JKT. When JKT were treated, the concentration of glucose were higher than untreated group. This result was thought to be influenced by the glucose in JKT. When 2, 4 dinitrophenol was treated, the transport and metabolism of glucose were decreased, but JKT treated together, the concentration of glucose in serosal solution increased. Conclusions; The transport and metabolism of glucose were influenced by the glucose in JKT. And the effects of JKT were still unidentified, but through continuous investigation, these effects of JKT should be identified.

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