1.Anti-obesity effects of Rapha diet(R) preparation in mice fed a high-fat diet.
Jihyun KIM ; Jangbeen KYUNG ; Dajeong KIM ; Ehn Kyoung CHOI ; Paul BANG ; Dongsun PARK ; Yun Bae KIM
Laboratory Animal Research 2012;28(4):265-271
The anti-obesity activities of Rapha diet(R) preparation containing silkworm pupa peptide, Garcinia cambogia, white bean extract, mango extract, raspberry extract, cocoa extract, and green tea extract were investigated in mice with dietary obesity. Male C57BL/6 mice were fed a high-fat diet (HFD) containing 3% Rapha diet(R) preparation for 8 weeks, and blood and tissue parameters of obesity were analyzed. The HFD markedly enhanced body weight gain by increasing the weights of epididymal, perirenal, and mesenteric adipose tissues. The increased body weight gain induced by HFD was significantly reduced by feeding Rapha diet(R) preparation, in which decreases in the weight of abdominal adipose tissue and the size of abdominal adipocytes were confirmed by microscopic examination. Long-term feeding of HFD increased blood triglycerides and cholesterol levels, leading to hepatic lipid accumulation. However, Rapha diet(R) preparation not only reversed the blood lipid levels, but also attenuated hepatic steatosis. The results indicate that Rapha diet(R) preparation could improve HFD-induced obesity by reducing both lipid accumulation and the size of adipocytes.
Abdominal Fat
;
Adipocytes
;
Animals
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Body Weight
;
Bombyx
;
Cacao
;
Cholesterol
;
Diet, High-Fat
;
European Continental Ancestry Group
;
Garcinia cambogia
;
Humans
;
Male
;
Mangifera
;
Mice
;
Obesity
;
Pupa
;
Tea
;
Triglycerides
;
Weights and Measures
2.Anti-hypercholesterolemic and anti-atherosclerotic effects of polarized-light therapy in rabbits fed a high-cholesterol diet.
Dongsun PARK ; Jangbeen KYUNG ; Dajeong KIM ; Seock Yeon HWANG ; Ehn Kyoung CHOI ; Yun Bae KIM
Laboratory Animal Research 2012;28(1):39-46
The effects of polarized-light therapy (PLT) on high-cholesterol diet (HCD)-induced hypercholesterolemia and atherosclerosis were investigated in comparison with that of lovastatin in rabbits. Hypercholesterolemia was induced by feeding male New Zealand white rabbits with 1% cholesterol in diet for 2 weeks and maintained with 0.5% cholesterol for 6 weeks, followed by normal diet for 2 weeks for recovery. Lovastatin (0.002% in diet) or daily 5-min or 20-min PLT on the outside surface of ears was started 2 weeks after induction of hypercholesterolemia. Hypercholesterolemic rabbits exhibited great increases in serum cholesterol and low-density lipoproteins (LDL) levels, and finally severe atheromatous plaques formation covering 57.5% of the arterial walls. Lovastatin markedly reduced both the cholesterol and LDL, but the reducing effect (47.5%) on atheroma formation was relatively low. By comparison, 5-min PLT preferentially decreased LDL, rather than cholesterol, and thereby potentially reduced the atheroma area to 42.2%. Notably, 20-min PLT was superior to lovastatin in reducing both the cholesterol and LDL levels as well as the atheromatous plaque formation (26.4%). In contrast to the increases in blood alanine transaminase and aspartate transaminase following lovastatin treatment, PLT did not cause hepatotoxicity. In addition, PLT decreased platelets and hematocrit level. The results indicate that PLT attenuates atherosclerosis not only by lowering blood cholesterol and LDL levels, but also by improving blood flow without adverse effects. Therefore, it is suggested that PLT could be a safe alternative therapy for the improvement of hypercholesterolemia and atherosclerosis.
Alanine Transaminase
;
Aspartate Aminotransferases
;
Atherosclerosis
;
Blood Platelets
;
Cholesterol
;
Diet
;
Ear
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Hematocrit
;
Humans
;
Hypercholesterolemia
;
Lipoproteins, LDL
;
Lovastatin
;
Male
;
Plaque, Atherosclerotic
;
Rabbits
3.The efficacy of hyperbaric oxygen therapy for skin perfusion following peripheral tissue injury due to usage of inotropes and vasopressors: a case report
Nien Hsiu SUEN ; Chang Hae PYO ; Hyun Kyung PARK ; Keun Hong PARK ; Dongsun CHOI
Clinical and Experimental Emergency Medicine 2024;11(4):387-391
Hyperbaric oxygen therapy (HBOT) has garnered significant attention as a therapeutic modality with potential benefits across a variety of medical conditions, ranging from wound healing and ischemic conditions to neurologic disorders and radiation-induced tissue damage. HBOT involves the administration of 100% oxygen at higher-than-atmospheric pressures, which increases the amount of oxygen dissolved in body fluids and tissues. Those elevated oxygen levels are proposed to facilitate tissue repair, reduce inflammation, and promote angiogenesis. This case report presents a compelling instance of the usefulness of HBOT in promoting skin perfusion and healing following peripheral tissue injury caused by administration of inotropic and vasopressor agents to a septic shock patient.
4.The efficacy of hyperbaric oxygen therapy for skin perfusion following peripheral tissue injury due to usage of inotropes and vasopressors: a case report
Nien Hsiu SUEN ; Chang Hae PYO ; Hyun Kyung PARK ; Keun Hong PARK ; Dongsun CHOI
Clinical and Experimental Emergency Medicine 2024;11(4):387-391
Hyperbaric oxygen therapy (HBOT) has garnered significant attention as a therapeutic modality with potential benefits across a variety of medical conditions, ranging from wound healing and ischemic conditions to neurologic disorders and radiation-induced tissue damage. HBOT involves the administration of 100% oxygen at higher-than-atmospheric pressures, which increases the amount of oxygen dissolved in body fluids and tissues. Those elevated oxygen levels are proposed to facilitate tissue repair, reduce inflammation, and promote angiogenesis. This case report presents a compelling instance of the usefulness of HBOT in promoting skin perfusion and healing following peripheral tissue injury caused by administration of inotropic and vasopressor agents to a septic shock patient.
5.The efficacy of hyperbaric oxygen therapy for skin perfusion following peripheral tissue injury due to usage of inotropes and vasopressors: a case report
Nien Hsiu SUEN ; Chang Hae PYO ; Hyun Kyung PARK ; Keun Hong PARK ; Dongsun CHOI
Clinical and Experimental Emergency Medicine 2024;11(4):387-391
Hyperbaric oxygen therapy (HBOT) has garnered significant attention as a therapeutic modality with potential benefits across a variety of medical conditions, ranging from wound healing and ischemic conditions to neurologic disorders and radiation-induced tissue damage. HBOT involves the administration of 100% oxygen at higher-than-atmospheric pressures, which increases the amount of oxygen dissolved in body fluids and tissues. Those elevated oxygen levels are proposed to facilitate tissue repair, reduce inflammation, and promote angiogenesis. This case report presents a compelling instance of the usefulness of HBOT in promoting skin perfusion and healing following peripheral tissue injury caused by administration of inotropic and vasopressor agents to a septic shock patient.
6.Anti-Helicobacter pylori effects of IgY from egg york of immunized hens.
Yun Hui YANG ; Dongsun PARK ; Goeun YANG ; Sun Hee LEE ; Dae Kwon BAE ; Jangbeen KYUNG ; Dajeong KIM ; Ehn Kyoung CHOI ; Jae Cheol SON ; Seock Yeon HWANG ; Yun Bae KIM
Laboratory Animal Research 2012;28(1):55-60
Effects of egg york containing IgY specific for Helicobacter pylori on the bacterial growth and intragastric infection were investigated in comparison with a proton-pump inhibitor pantoprazole. For in vitro anti-bacterial activity test, H. pylori (1x108 CFU/mL) was incubated with a serially diluted IgY for 3 days. As a result, IgY fully inhibited the bacterial growth at 16 mg/mL, which was determined to a minimal inhibitory concentration. In vivo elimination study, male C57BL/6 mice were infected with the bacteria by intragastric inoculation (1x108 CFU/mouse) 3 times at 2-day intervals, and 2 weeks later, orally treated twice a day with 50, 100, 200 or 500 mg/kg IgY for 18 days. After the final administration, biopsy sample of the gastric mucosa was assayed for the bacterial identification via urease, oxidase, catalase, nitrate reduction and H2S tests in addition to microscopic examination for mucosal inflammation. In CLO kit test, 75, 50, 12.5 and 12.5% of the animals revealed positive reaction following treatment with 50, 100, 200 and 500 mg/kg IgY, respectively, resulting in a superior efficacy at 200 mg/kg than 30 mg/kg pantoprazole that displayed 75% elimination. The CLO test results were confirmed by bacterial identification. Microscopic examination revealed that H. pylori infection caused severe gastric mucosal inflammation, which were not observed in the CLO-negative mice following treatment with IgY or pantoprazole. Taken together, IgY inhibited the growth of H. pylori, and improved gastritis and villi injuries by eliminating the bacteria from the stomach. The results indicate that IgY could be a good candidate overcoming tolerance of antibiotics for the treatment of H. pylori-mediated gastric ulcers.
2-Pyridinylmethylsulfinylbenzimidazoles
;
Animals
;
Anti-Bacterial Agents
;
Bacteria
;
Biopsy
;
Catalase
;
Gastric Mucosa
;
Gastritis
;
Helicobacter pylori
;
Humans
;
Immunoglobulins
;
Inflammation
;
Male
;
Mice
;
Ovum
;
Oxidoreductases
;
Stomach
;
Stomach Ulcer
;
Urease
7.Specific nephrotoxicity and cardiotoxicity of BT-CAL(R), Sigma Anti-bonding Molecule Calcium Carbonate, in mice.
Ja Young JANG ; Jingmei CAI ; Jihyun KIM ; Jangbeen KYUNG ; Dajeong KIM ; Ehn Kyoung CHOI ; Youngeun KIM ; Kwang Sei KIM ; Dongsun PARK ; Hyun Gu KANG ; Yun Bae KIM
Laboratory Animal Research 2013;29(1):7-11
According to a high anti-osteoporotic efficacy of Sigma Anti-bonding Molecule Calcium Carbonate (SAC), repeated-dose toxicities of SAC were investigated to assess its feasibility as drug or functional food ingredient. Male ICR mice were given drinking water containing 0.006, 0.02 or 0.06% SAC for 4 weeks. SAC feeding decreased the body weights and feed and water consumptions of mice in a dose-dependent manner, especially, leading to severe emaciation and 70% death in 3 weeks in the high-dose (0.06%) group. Not only kidney and heart weights, but also the levels of blood urea nitrogen, creatinine, aspartate transaminase, and creatine phospokinase significantly increased after SAC administration, indicative of nephrotoxicity and cardiotoxicity. Such renal and cardiac toxicities were also confirmed by microscopic findings, exhibiting renal crystals and cardiac fibrosis, which may be due to the insoluble crystal formation and calcium overload, respectively. In conclusion, it is suggested that no observed adverse effect level of SAC is lower than 0.006% in mice, and that a long-term intake may cause serious adverse effects on renal and cardiac functions.
Animals
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Aspartate Aminotransferases
;
Blood Urea Nitrogen
;
Body Weight
;
Calcium
;
Calcium Carbonate
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Creatine
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Creatinine
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Drinking Water
;
Emaciation
;
Fibrosis
;
Functional Food
;
Heart
;
Humans
;
Kidney
;
Male
;
Mice
;
Mice, Inbred ICR
;
No-Observed-Adverse-Effect Level
;
Weights and Measures
8.A Dunnione Compound MB12662 Improves Cisplatin-Induced Tissue Injury and Emesis.
Dongsun PARK ; In Geun JO ; Ja Young JANG ; Tae Hwan KWAK ; Sang Ku YOO ; Jeong Hee JEON ; Ehn Kyoung CHOI ; Seong Soo JOO ; Okjin KIM ; Yun Bae KIM
Biomolecules & Therapeutics 2015;23(5):449-457
The present study was aimed to investigate the effects of MB12662, a synthetic dunnione compound, on cisplatin-induced vomiting reflexes and intestinal, renal, immune system, and hematopoietic toxicities in ferrets and mice, respectively. Male ICR mice were orally administered MB12662 (5, 10, 25 or 50 mg/kg) for 10 days, during which intraperitoneally challenged with cisplatin (3.5 mg/kg) from day 4 to 7, and sacrificed on day 10 for the pathological examination. Male ferrets were orally administered MB12662 (25, 50 or 100 mg/kg) for 7 days, subcutaneously challenged with cisplatin (5 mg/kg), and monitored for vomiting reflexes and survival of the animals. Four-day injection of cisplatin (3.5 mg/kg) to mice caused body weight loss and degeneration and atrophy of intestinal villi, reducing villi/crypt ratio to a half level of control animals. Cisplatin also induced renal and hepatic toxicities, and depletion of splenocytes and bone marrow progenitor cells. The systemic toxicities including decreased villi/crypt ratio, immune system atrophy, splenocyte depletion, and decreased cellularity in bone marrow were improved by MB12662. Cisplatin (5 mg/kg) induced retching and emetic responses of ferrets, which were remarkably attenuated by MB12662 in a dose-dependent manner. All the ferrets pretreated with MB12662 survived the challenge of cisplatin, in comparison with 40% mortality in vehicle-treated animals, and blood parameters of nephrotoxicity and hepatotoxicity were markedly recovered. It is expected that MB12662 could be a candidate for the body protection against burden, including emesis, of chemotherapeutic agents.
Animals
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Atrophy
;
Body Weight
;
Bone Marrow
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Cisplatin
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Ferrets
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Humans
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Immune System
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Male
;
Mice
;
Mice, Inbred ICR
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Mortality
;
Reflex
;
Stem Cells
;
Vomiting*
9.Anti-inflammatory effects of Houttuynia cordata supercritical extract in carrageenan-air pouch inflammation model.
Dajeong KIM ; Dongsun PARK ; Jangbeen KYUNG ; Yun Hui YANG ; Ehn Kyoung CHOI ; Yoon Bok LEE ; Hyun Kyu KIM ; Bang Yeon HWANG ; Yun Bae KIM
Laboratory Animal Research 2012;28(2):137-140
Anti-inflammatory effects of Houttuynia cordata supercritical extract (HSE) were investigated in rat carrageenan-air pouch model. Oral administration of HSE (50-200 mg/kg) suppressed carrageenan-induced exudation and albumin leakage, as well as inflammatory cell infiltration at a high dose (200 mg/kg). Intraperitoneal injection of dexamethasone (2 mg/kg) only decreased exudation and cell infiltration, while indomethacin (2 mg/kg, i.p.) reduced exudate volume and albumin content without influence on the cell number. HSE lowered tumor-necrosis factor-alpha (TNF-alpha) and nitric oxide (NO), as well as prostaglandin E2 (PGE2). Dexamethasone only reduced TNF-alpha and NO, while indomethacin decreased PGE2. The results indicate that HSE exhibits anti-inflammatory effects by inhibiting both TNF-alpha-NO and cyclooxygenase-2-PGE2 pathways.
Administration, Oral
;
Animals
;
Carrageenan
;
Cell Count
;
Dexamethasone
;
Dinoprostone
;
Exudates and Transudates
;
Houttuynia
;
Indomethacin
;
Inflammation
;
Injections, Intraperitoneal
;
Nitric Oxide
;
Rats
;
Tumor Necrosis Factor-alpha
10.Synergistic anti-inflammatory effects of Laminaria japonica fucoidan and Cistanche tubulosa extract.
Jangbeen KYUNG ; Dajeong KIM ; Dongsun PARK ; Yun Hui YANG ; Ehn Kyoung CHOI ; Sung Pyo LEE ; Tae Su KIM ; Yoon Bok LEE ; Yun Bae KIM
Laboratory Animal Research 2012;28(2):91-97
The anti-inflammatory effects of fuciodan and Cistanche tubulosa (CT) extract were investigated in vitro macrophage culture system and in vivo carrageenan-induced air pouch inflammation model. CT extract inhibited nitric oxide production from activated RAW 264.7 macrophage cells, while fucoidan was inactive. In vivo air pouch inflammation model, carrageenan-induced vascular exudation and increased nitric oxide and prostaglandin E2 concentrations in the exudates were synergistically suppressed by co-administration of fucoidan or CT extract. Moreover, tissue inflammation was substantially attenuated by the combinational therapy. However, there was no synergistic effect against the inflammatory cell infiltration, although fucoidan and CT extract each markedly reduced the cell numbers. Therefore, it is suggested that fucoidan blocks infiltration of inflammatory cells, while CT extract inhibits activation of the cells, and that their combinational treatment could be a promising candidate for the relief of various types of inflammation.
Carrageenan
;
Cell Count
;
Cistanche
;
Dinoprostone
;
Exudates and Transudates
;
Inflammation
;
Laminaria
;
Macrophages
;
Nitric Oxide
;
Polysaccharides