• Title/Summary/Keyword: external heart

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Entelon150® (Vitis vinifera Seed Extract) Attenuates Degenerative Changes in Intravascular Valve Prostheses in Rabbits

  • Jue Seong Lee;JungHyeok Seo;Sokho Kim;Md. Mahbubur Rahman;Hong Ju Shin
    • Korean Circulation Journal
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    • v.54 no.1
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    • pp.43-56
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    • 2024
  • Background and Objectives: The therapeutic strategy for inflammation and degenerative calcification is of utmost importance for bioprosthetic heart valve (BHV) implanted patients. The purpose of this study was to compare the anti-inflammatory and anti-calcification effects of Entelon150® (grape seed extract), losartan, and rosuvastatin, in a rabbit model of intravascular BHV leaflet implantation in bovine pericardium. Methods: A total of 28 rabbits were implanted with BHV leaflet in the external jugular veins. The Entelon150® group was administered 7.7 mg/kg Entelon150® twice daily for 6 weeks after surgery. The losartan and rosuvastatin groups received 5.14 mg/kg and 1 mg/kg, respectively, once per day. The control group received 1 ml of saline once daily. And then, calcium concentration was measured in the implanted BHV, and histological and molecular analyses were performed on the surrounding tissues. Results: The calcium content of the implanted tissue in the Entelon150® group (0.013±0.004 mg/g) was lower than that in the control group (0.066±0.039 mg/g) (p=0.008). The losartan (0.024±0.016 mg/g, p=0.032) and rosuvastatin (0.022±0.011 mg/g, p=0.032) groups had lower calcium content than the control group, and higher tendency than the Entelon150® group. Immunohistochemistry revealed that the expressions of bone morphogenic protein 2 (BMP2), S-100, and angiotensin II type 1 receptor in the Entelon150® group showed lower tendency than those in the control group. The protein expression levels of BMP2 were reduced in the Entelon150® group compared with those in the control group. Conclusions: Entelon150® exhibited a significant effect, similar to other drugs, in reducing calcification and inflammation in the intravascular bovine pericardium.

Studies on the Safety of Artemisiae Capillaris Herba - With the Perinatal and Lactational Reproductive Toxicity - (인진의 안정성에 대한 연구 - 주산$\cdot$수유기 생식 독성을 중심으로 -)

  • Wang Wu-Hao;Park Jae-Hyun
    • The Journal of Korean Medicine
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    • v.26 no.2 s.62
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    • pp.32-51
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    • 2005
  • Objectives: To study the effect of Artemisiae Capillaris Herba extracts, that have been used as oriental medicine to treat liver disease, on the perinatal and lactational n;)productive toxicity of SD rats when administered by oral lavage. Methods: Female SD rats were dosed from 6 days of gestation to 3 weeks postpartum. This was conducted in accordance with the recommendations of the KFDA Guidelines for Detection of Toxicity to Reproduction for Medicinal Products. Results: No Artemisiae Capillaris Herba extracts treatment-related changes in clinical signs, mortalities, implantation number, dead fetus number, loss rate of fetus, number of live young, survival rate of fetus, sex ratio of live young, external anomalies, pregnancy periods, viability index, lactational index, survival rate of litters at 4 days after birth or delivery index were demonstrated in any dosed levels in this study. However, the body weight and gains, food consumption and absolute organ weights of brain, adrenal glands, liver, spleen, kidney, ovaries and heart were significantly increased in 2000 or 1000mg/kg-dosing groups and the relative organ Weights of adrenal glands were significantly increased in 2,000mg/kg-dosing groups. Therefore, it was concluded that this increase was natural according to growth. Also, no changes of gross findings, clinical signs, mortalities, body weight and gains, physical development results, necropsy findings, organ weight, faculty test, open filed test and water-filled simple T-maze test, copulation, fertility, pregnancy indices, body weight and gains during gestation periods, necropsy findings, corpora lutea number, implantation number, implantation rate, dead fetus number, post-implantation loss rate, live young, post-implantation survival rate, sex ratio of live young, external anomalies and individual body weights of live young were demonstrated in any dosed levels in this study. Conclusions: It is considered that the NOAEL (No-Observed-Adverse-Effect Level) for perinatal and lactational reproductive toxicity of Artemisiae Capillaris Herba extracts was up to 2000mg/kg/day because no changes of other perinatal and lactational reproductive indices were demonstrated.

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Expression of phospholipase C β1 in olive flounder (Paralichthys olivaceus) following external stress stimulation

  • Woo, Soo Ji;Jang, Hee Young;Lee, Hyung Ho;Chung, Joon Ki
    • Fisheries and Aquatic Sciences
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    • v.19 no.4
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    • pp.18.1-18.10
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    • 2016
  • In this study, to clarify the function of $PoPLC-{\beta}1$, in response to stress challenge, we examined the $PoPLC-{\beta}1$ expression pattern in response to external stress (pathogen-associated molecular pathogen challenge and environmental challenge including temperature and salinity). $PoPLC-{\beta}1$ expression analysis of tissue from olive flounder showed that the messenger RNA (mRNA) was predominantly expressed in the brain, heart, eye, liver, spleen, and stomach. We also tested the mRNA expression of the $PoPLC-{\beta}1$ in the spleen and kidney of olive flounder by RT-PCR and real-time PCR following stimulation with lipopolysaccharide (LPS), concanavalin A (ConA), or polyinosinic:polycytidylic acid (PolyI:C) and compared with the inflammatory cytokines IL-1b and IL-6 in the stimulated flounder tissues. Each of the spleen and kidney and mRNA transcripts of $PoPLC-{\beta}1$ were increased 30- and 10-fold than normal tissue at 1-6 h post injection (HPI) with PolyI:C when the expression of $PoPLC-{\beta}1$ transcript was similar to LPS and ConA. We also tested the expression of $PoPLC-{\beta}1$ in response to temperature and salinity stress. The expression of $PoPLC-{\beta}1$ also was affected by temperature and salinity stress. Our results provide clear evidence that the olive flounder $PLC-{\beta}1$ signal pathways may play a critical role in immune function at the cellular level and in inflammation reactions. In addition, $PLC-{\beta}1$ appears to act as an oxidative-stress suppressor to prevent cell damage in fish.

Study on Medical Thought of "Zhouyi Cantongxie(周易參同契)" ("주역참동계"에 나타난 의학사상 연구)

  • Im, Myung-Jin;Kim, Byung-Soo;Kang, Jung-Soo
    • Journal of Korean Medical classics
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    • v.24 no.5
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    • pp.1-10
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    • 2011
  • According to "Dongeuibogam(東醫寶鑑)", "the Shinnong Herb Bible(神農本草經)", "Chamdonggo(參同攷)", come to the conclusion about medical thought of "the Zhouyi Cantongxie(周易參同契)". Alchemy is a common field both on the eastern and western civilization, but a process of development is different. Ancient chinese alchemist made a study on external alchemy, but harmful consequences of external alchemy was consecutive, many scholars had turned their interest on internal alchemy which is related in human meridian biology and spirit. In the western alchemy has developed to make a study on analytic psychology and science of religion. Most importantly, the eastern and western alchemy have something in common what at the point of the perfection of self is similar, but the name is different, for example in the eastern alchemy we can be immortals and take a spiritual enlightenment with the elixir of life, in the western we can take a cure of souls as a christian. As for internal alchemy, "Cantongxie(參同契)" gives influence to the theories such as the theory of danjeon(lower part of the abdomen), evolution, aging, and life nurturing. Especially, the theory of danjeon shows such merit for studying since it is similar to triple energizers(三焦) and the theory of qi street(氣街) of oriental medicine. The study on "Cantongxie(參同契)" was achieved in Korea too, especially Chosun dynasty. "Candongkao (參同攷)" by Seo Myung-eung(徐命膺, 1716~1787) are representative. According to "Candongkao(參同攷)", Geon(乾), Gon(坤), Gam(坎), and Ri(離), the four trigrams for divination, each are affiliated with lungs, spleen, kidneys, and heart. Nowadays the study on alchemy correspond with modern trends, which are anti-aging and living without any disease. If processed mineral drugs is assured for stability, it can be used for incurable diseases such as cancer.

A Research on the Development of Smartwatch and Wind Speed System for Marine Leisure (해양레저용 스마트워치 및 풍향풍속계 개발에 관한 연구)

  • Ha, Yeon-Chul;Park, Jae-Mun;Lee, In-Seong
    • Journal of the Institute of Convergence Signal Processing
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    • v.22 no.1
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    • pp.20-29
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    • 2021
  • This study developed a smartwatch and a wind speed system in accordance with the necessity of a device that provides the information required in marine leisure. Based on a marine leisure smartwatch with a multi-sensor, a gyro box, and a wind speed system, external data such as GPS, motion, humidity, temperature, air pressure, and heart rate can be collected. In addition, the collected external environment data can be managed through an application on a smartphone, which is an Android-based mobile device. The developed smartwatch and wind speed system are expected to contribute to increasing accessibility and revitalization of the marine leisure industry. In addition, in terms of safety and education, the need for a device that provides marine information is large, so it is expected to increase the possibility of entering the high value-added market and improve the product localization rate.

Stent graft treatment of an ilioenteric fistula secondary to radiotherapy: a case report

  • Jang, Joo Yeon;Jeon, Ung Bae;Kim, Jin Hyeok;Kim, Tae Un;Hwang, Jae Yeon;Ryu, Hwa Seong
    • Journal of Yeungnam Medical Science
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    • v.39 no.1
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    • pp.77-80
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    • 2022
  • Fistulas between the arteries and the gastrointestinal tract are rare but can be fatal. We present a case of an ilioenteric fistula between the left external iliac artery and sigmoid colon caused by radiotherapy for cervical cancer, which was treated with endovascular management using a stent graft. A 38-year-old woman underwent concurrent chemoradiotherapy for cervical cancer recurrence. Approximately 9 months later, the patient suddenly developed hematochezia. On her first visit to the emergency room of our hospital, computed tomography (CT) images did not reveal extravasation of contrast media. However, 8 hours later, she revisited the emergency room because of massive hematochezia with a blood pressure of 40/20 mmHg and a heart rate of 150 beats per minute. At that time, CT images showed the presence of contrast media in almost the entire colon. The patient was referred to the angiography room at our hospital for emergency angiography. Inferior mesenteric arteriography did not reveal any source of bleeding. Pelvic arteriography showed contrast media extravasation from the left external iliac artery to the sigmoid colon; this was diagnosed as an ilioenteric fistula and treated with a stent graft. When the bleeding focus is not detected on visceral angiography despite massive arterial bleeding, pelvic arteriography is recommended, especially in patients with a history of pelvic surgery or radiotherapy.

Ultrasensitive Crack-based Mechanosensor Inspired by Spider's Sensory Organ (거미의 감각기관을 모사한 초민감 균열기반 진동압력센서)

  • Suyoun Oh;Tae-il Kim
    • Journal of the Microelectronics and Packaging Society
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    • v.31 no.1
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    • pp.1-6
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    • 2024
  • Spiders detect even tiny vibrations through their vibrational sensory organs. Leveraging their exceptional vibration sensing abilities, they can detect vibrations caused by prey or predators to plan attacks or perceive threats, utilizing them for survival. This paper introduces a nanoscale crack-based sensor mimicking the spider's sensory organ. Inspired by the slit sensory organ used by spiders to detect vibrations, the sensor with the cracks detects vibrations and pressure with high sensitivity. By controlling the depth of these cracks, they developed a sensor capable of detecting external mechanical signals with remarkable sensitivity. This sensor achieves a gauge factor of 16,000 at 2% strain with an applied tensile stress of 10 N. With high signal-to-noise ratio, it accurately recognizes desired vibrations, as confirmed through various evaluations of external force and biological signals (speech pattern, heart rate, etc.). This underscores the potential of utilizing biomimetic technology for the development of new sensors and their application across diverse industrial fields.

The literatural study of investigating the contents associated with the neuropsychosis in the medical books published in the times of Chinese dynasty of Jin and Yuan (금원시대(金元時代)의 의서(醫書)에 나타난 신경정신질환(神經精神疾患)에 대한 고찰(考察))

  • Choi, Jong Geol;Lee, Sang Ryong
    • Journal of Haehwa Medicine
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    • v.9 no.1
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    • pp.725-743
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    • 2000
  • This study was intended to investigate the contents associated with the neuropsychosis in the medical books published in the times of Chinese dynasty of Jin and Yuan. As a result, the following findings were drawn. 1. As for palpitation from fright and severe palpitation, the medical schools in the times of Chinese Jin and Yuan dynasties viewed their causes as heart-fire, shuiqichengxin, blood vacuity, phlegm and so on and presented a prescription for each cause for them. 2. As for psychosis, medical books published in the times of Chinese Jin and Yuan dynasties accurately divided and discussed epilepsy and viewed their causes largely as Yangming heat, phlegm of chest and heart-fire. And a number of medical schools made use of such therapeutics as sweating, vomiting and diarrhea therapies. 3. As for headache, medical books published in the times of Chinese Jin and Yuan dynasties presented their causes as fire and heat, phlegm heat, phlegm and so on and classified the aspect of headache in detail. As for vacuity rexation and dysphoria, medical books at that time saw their causes as fire and heat, heart-fire, blood vacuity and so forth and presented a prescription for them accordingly. 4. Liu Wan Su was the Hanliang school. He viewed the etiological cause for psychopathy as fire and heat and prescribed largely the medication of cold nature for it. 5. Zhang Cong Zheng belonged to the Gongxia School. He viewed the etiological cause for psychopathy as fire, phlegm and so forth and made use of sweating, vomiting and diarrhea therapies. Especially, he used the 'Jingzhepingzhe' therapy as a method to treat the symptom of fright. 6. Li Gao did not any specific mention of psychopathy and divided headache due to internal injury and headache due to external contraction. 7. Zhu Zhen Heng viewed most of the etiological causes for psychopathy as phlegm, fire and deficiency of blood and attached importance to such its therapeutics as resolving phlegm, cleaning away fire and nourishing Yin. 8. Wang Hao Gu did not present the specifically common etiological cause and prescription for psychopathy but described the cause and prescription for headache, dysphoria, maniac speech, palpitation and so forth. Luo Tian Yi presented the process of psychosis due to abnormal therapy for cold demage and prescription of it. 9. Wang Lu made a detailed explanation about the therapeutics of five types of stagnated syndrome and said that stagnated syndrome became the major cause for them in the occurrence of such psychopathy. Wei Yi Lin presented the prescription and medication for comparatively diverse mental diseases such zhong-qi, severe palpitation, palpitation for fright, impaired memory, vacuity rexation, headache, psychosis.

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Pharmacognostical Studies on Korean Arisaema ringens $S_{CHOTT}$ (한국산 Arisaema ringens $S_{CHOTT}$의 생약학적 연구)

  • Chung, Myung-Hyun
    • Korean Journal of Pharmacognosy
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    • v.2 no.4
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    • pp.163-172
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    • 1971
  • This paper attempts to observe the histological structure of Korean Arisaema ringens $S_{CHOTT}{'s}$ rhizome, to identify it's constituent and to investigate the pharmacological action with it's alcohol extract. The results are : 1) The inner structure of rhizome on the transverse section is divided into external and internal tissues by the ring of intercellular secretary sac. Raphides of calcium oxalate contained in mucilage cell, collateral vascular bundle, are extremely similar to those contained in Pinellia ternata. 2) The organs of the pistillate Arisaema ringens are larger and more plentiful than those of the staminate Arisaema ringens. The sexual identification is easy in the flowering season. 3) The alkaloid is identified by Meyer reagent as white p.p.t. at pH 2 of sulfuric acid. 4) The saponin is indentified remarkably by means of foaming reaction, Lieberman-Burchard reaction and hemolytic reaction. 5) The effect of alcohol extract on the relaxation of the isolated intestine of the rabbit is remarkably shown at the concentration of $10^{-3}g/ml$. 6) The effect of alcohol extract on the isolated ractus muscle of the frog increases the constructive action of acetylcholine at the concentration of $10^{-3}g/ml$. 7) The effect of alcohol extract on the isolated heart movement of the frog is decreased remarkably at the concentration of $10^{-3}g/ml$. 8) The effect of alcohol extract on the blood pressure of the rabbit is decreased by an interavenous injection of $10^{-3}g/kg$.

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Effects of Breeder Age and Stocking Density on Performance, Carcass Characteristics and Some Stress Parameters of Broilers

  • Onbasilar, E.E.;Poyraz, O.;Cetin, S.
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.2
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    • pp.262-269
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    • 2008
  • The aim of this study was to determine the effects of breeder age and stocking density on performance, carcass characteristics and some stress parameters (H-L ratio, serum glucose, cholesterol and triglyceride levels, tonic immobility test (TI), antibody production, relative asymmetry (RA) and external appearances). This experiment was carried out with 705 one-day old male broiler chicks (Ross 308) obtained from three different ages of broiler breeder (32, 48 and 61 wks). Each age group was randomly divided into two stocking density groups (11.9 and 17.5 broilers per $m^2$) with 5 replications per group. The experimental period was 6 weeks. Broilers from 32 wk-old breeders had lower initial weight (p<0.001), body weight gain of the first 3 week of rearing (p<0.01), the percentage of abdominal fat (p<0.001) and serum cholesterol level (p<0.01); higher percentage of gizzard (p<0.01) and longer TI duration (p<0.001) than those from 48 and 61 wk-old breeders. Broilers reared at 17.5 b/m2 had lower final BW, body weight gain, feed consumption, feather condition and foot health (p<0.001), higher percentage of heart, H-L ratio, serum glucose and cholesterol levels (p<0.001), and longer TI durations (p<0.001). There were no significant interactions in examined parameters except for feed to gain ratio between breeder age and stocking density.