• Title/Summary/Keyword: stimulant

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Adenosine derived from Staphylococcus aureus-engulfed macrophages functions as a potent stimulant for the induction of inflammatory cytokines in mast cells

  • Ma, Ying Jie;Kim, Chan-Hee;Ryu, Kyoung-Hwa;Kim, Min-Su;So, Young-In;Lee, Kong-Joo;Garred, Peter;Lee, Bok-Luel
    • BMB Reports
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    • v.44 no.5
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    • pp.335-340
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    • 2011
  • In this study, we attempted to isolate novel mast cell-stimulating molecules from Staphylococcus aureus. Water-soluble extract of S. aureus cell lysate strongly induced human interleukin-8 in human mast cell line-1 and mouse interleukin-6 in mouse bone marrow-derived mast cells. The active molecule was purified to homogeneity through a $C_{18}$ reverse phase HPLC column. By determination of its structure by MALDITOF and $^1H$- and $^{13}C$-NMR, adenosine was revealed to be responsible for the observed cytokine induction activities. Further studies using 8-sulfophenyl theophylline, a selective adenosine receptor blocker, verified that purified adenosine can induce interleukin-8 production via adenosine receptors on mast cells. Moreover, adenosine was purified from S. aureus-engulfed RAW264.7 cells, a murine macrophage cell line, used to induce phagocytosis of S. aureus. These results show a novel view of the source of exogenous adenosine in vivo and provide a mechanistic link between inflammatory disease and bacterial infection.

Genomic Organization and Isoform-Dependent Expression Patterns of Wap65 genes in Various Tissues during Immune Challenges in the Mud Loach Misgurnus mizolepis

  • Kim, Yi Kyung;Cho, Young Sun;Lee, Sang Yoon;Nam, Yoon Kwon
    • Fisheries and Aquatic Sciences
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    • v.17 no.4
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    • pp.471-478
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    • 2014
  • Genomic organization, including the structural characteristics of 5'-flanking regions of two 65-kDa protein (WAP65) isoform genes associated with warm temperature acclimation, were characterized and their transcriptional responses to immune challenges were examined in the intestine, kidney and spleen of the mud loach (Misgurnus mizolepis; Cypriniformes). Both mud loach Wap65 isoform genes displayed a 10-exon structure that is common to most teleostean Wap65 genes. The two mud loach Wap65 isoforms were predicted to possess various stress- and immune-related transcription factor binding sites in their regulatory regions; however, the predicted motif profiles differed between the two isoforms, and the inflammation-related transcription factor binding motifs, such as NF-${\kappa}B$ and CREBP sites, were more highlighted in the Wap65-2 isoform than the Wap65-1 isoform. The results of qRT-PCR indicated that experimental immune challenges using Edwardsiella tarda, lipopolysaccharide or polyI:C induced the Wap65-2 isoform more than Wap65-1 isoform, although modulation patterns in response to these challenges were tissue- and stimulant-dependent. This study confirms that functional diversification between the two mud loach Wap65 isoforms (i.e., closer involvement of Wap65-2 in the acute phase of inflammation and innate immunity) occurs at the mRNA level in multiple tissues, and suggests that such differential modulation patterns between the two isoforms are related to the different transcription factor binding profiles in their regulatory regions.

Therapeautic Exercise for Incontinece Patients (요실금 환자의 운동치료)

  • Park Don-Mork;Moon Hyang-Mee;Kim Jin-Sang
    • The Journal of Korean Physical Therapy
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    • v.10 no.2
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    • pp.183-193
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    • 1998
  • The Therapeutic pattern for the urinary incontinence in women should be chosen by means of the correct diagnosis. The therapeutic methods are various but drug therapy, electrical therapy and excercise therapy make the urinary incontinance be teated well, except some patient. This study carried out to investigate the therapeutic method fer urinary incontinence by the scope of excercise therapy. The excercise therapy demands the therapist of the correct diagnosis and evaluation. The patient should be Supine position not to increase the, abdominal pressure, and during the early excercise, the excercise should be applied by simple pattern to complex one. The change of position sod duration of therapy are to correspond with the sequels of patient and the patient has to abstrain from stimulant food such as coffee.

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Effect of Acupuncture on Behavior and Dopamine Release in the Nucleus Accumbens in rats Sensitized to Morphine (몰핀 투여로 민감화된 실험동물의 행동 및 뇌 측핵의 도파민 유리에 대한 침 효과)

  • Lyu Yeoung Su
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.17 no.2
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    • pp.510-517
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    • 2003
  • Studies have shown that both the psychomotor stimulant effects and rewarding properties of addictive drugs, including morphine, are sensitized by repeated drug administration and it is suggested that both of these effects are mediated by the same or closely overlapping dopamine systems. Specifically, the mesolimbic dopamine system has been implicated in the reinforcing and sensitizing properties of morphine. In oriental medicine, Shenmen (HT7) point on the heart channel has been used to treat mental and psychosomatic disorders. This study was designed to investigate the effect of acupuncture on acute and repeated morphine-induced changes in extracellular dopamine levels using in vivo microdialysis and morphine-induced behavioral changes. In the morphine sensitization experiment, male Sprague-Dawley rats were treated twice a day for three days with increasing doses of morphine (10, 20 and 40 mg/kg, s.c.) or with saline. After 15 days of withdrawal, rats were challenged with morphine hydrochloride (5 mg/kg, s.c.). Acupuncture was applied at bilateral Shenmen (HT7) points for 1 min after the morphine challenge. In the acute experiment, rats also received acupuncture for 1 min after an injection of morphine hydrochloride (5 mg/kg, s.c.). Results showed that acupuncture at the specific acupoint HT7, but not at control points (tail) significantly decreased both dopamine release and behavior induced by a systemic morphine challenge or a single sc morphine injection in the acute animals. These results suggest that reduction in sensitization may be one mechanism whereby acupuncture alleviates morphine craving in addicts.

A Study on the Depaminergic Control of T.S.H. Secretion (갑상선자극(甲狀腺刺戟) 호르몬 분비(分泌)에 대(對)한 Dopaminergic Contrl에 관(關)한 연구(硏究))

  • Kim, Myung-Duk;Lee, Jung-Sang;Koh, Chang-Soon;Lee, Mun-Ho;Kim, Eung-Jin
    • The Korean Journal of Nuclear Medicine
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    • v.12 no.2
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    • pp.7-16
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    • 1978
  • To elucidate the depaminergic control of T.S.H. secretion, we analized the pattern of T.S.H. secretion in seven normal controls and nine primary hypothyroid subjects, before and after single or combined administration of specific dopaminergic,receptor blocker, metoclopramide, and specific depaminergic receptor stimulant, bromergocryptine(CB-154). The results obtained were as follows: 1) There was a significant rise in T.S.H. levels after intra venous injection of metocloramide (10mg) in hypothyroid subjects. But there was no significant rise in T.S.H. levels in normal controls. The T.S.H. response to metoclopramide varied considerably, being large in mild cases and small in severely hypothyroid subjects. 2) There was a significant fall in T.S.H. levels after oral administration of bromergocryptine (2mg) in hypothyroid subjects, but there was no significant fall in T.S.H. levels in normal controls. 3) There was no significant fluctuation in T.S.H. levels after combined administration of both metoclopramide and bromergocrytine. 4) There was no significant fluctuation in T.S.H. levels after intravenous injection of normal saline(2ml) in both hypothyroid and normal subjects. 5) There was no significant change in serum $T_3\;and\;T_4$ after administration of metoclopramide and and bromergocryptine respectively and serially. These data support the fact that there is a dopaminergic control in the secretion of T.S.H. in the human.

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The Relationship between the Relative Attention of Design Elements and Product Preference Response (디자인 요소의 상대적 주목성과 제품 선호 반응의 상관관계)

  • Heo Seong-Cheol
    • Science of Emotion and Sensibility
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    • v.8 no.3
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    • pp.253-263
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    • 2005
  • In this study, the basic purpose was to identify the characteristics of the perception response of the elements that have an influence on the information search process for an assessment of product preference. Also, the relationship between the characteristics and the preference of products were reviewed in terms of the experience of the use of products. For this, photos of mobile phones and proposal-type products were selected and the experimental stimulant and experiments were conducted in two steps. In the first experiment, observations were made on the photos of the proposed products and they were arranged in the order of preference. In the second experiment, the part with the first attention in the preference assessment was marked by using the product photos that were previously selected and ranking them from 1 to 10. Two conclusions were obtained from the results of the experiment. First, the experimental memory information with the experience of the use of the products activates an interpretational response to the various constitutional elements included in the object for conception in the process of a preference rating. Second, no product use experience induces the reaction that perceptually accepts the esthetical elements included in the object for perception, regardless of preference.

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Anti-inflammatory Effects of 8α-hydroxy pinoresinol isolated from Nardostachys jatamansi on Lipopolysaccharide-induced Inflammatory Response in RAW 264.7 Cells. (LPS로 유도된 RAW 264.7 세포의 염증반응에서 감송향(甘松香)에서 추출한 8α-hydroxy pinoresinol의 항염증 효과)

  • Choi, Sun Bok;Park, Sung-Joo
    • The Korea Journal of Herbology
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    • v.31 no.5
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    • pp.1-6
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    • 2016
  • Objectives : Nardostachys jatamansi (NJ) is a medicinal herb that has been reported in various traditional systems of medicine for its use in antispasmodic, a digestive stimulant, skin diseases. Previous studies have already reported that NJ effectively protects against inflammation. However, the active compound in NJ is unknown. Therefore, in the present study, we analyzed effects of a compound, 8α-hydroxy pinoresinol (HP), isolated from NJ against lipopolysaccharide (LPS) induced inflammation in RAW 264.7 cells.Methods : To examine the anti-inflammatory effect of HP against LPS, intraperitoneally pre-treat the HP (100, 200, 500 and 1,000 nM) 1 h prior to LPS challenges. LPS was stimulated with 500 ng/ml in RAW 264.7 cells. To identify the anti-inflammatory effect of HP, we measured inflammatory mediators such as inducible nitric oxide synthase (iNOS) and its derivative nitric oxide (NO), cyclooxygenase-2 (COX-2), prostaglandin E2 (PGE2). Also we evaluated molecular mechanisms including mitogen-activated protein kinases (MAPKs) and nuclear factor-kappaB (NF-κB) activation by western blot.Results : The HP inhibited production of inflammatory mediators, such as iNOS and its derivative NO, COX-2 and PGE2 in LPS- induced inflammationin RAW 264.7 cells. Additionally, HP also inhibited activation of p38 pathway signaling but not extracellularsignal-regulatedkinase (ERK), c-jun NH2-terminal kinase (JNK), and NF-κB.Conclusion : Our results suggest that HP has anti-inflammatory functions through the dephosphorylation of p38 and HP can provide beneficial strategy for prevention and therapy of inflammation.

EFFECT OF CAPSAICIN AND EUGENOL ON ICGRP (IMMUNOREACTIVE CALCITONIN GENE-RELATED PEPTIDE) RELEASE FROM RAT LUMBAR SPINAL CORD. (백서 척수에서 Capsaicin과 Eugenol이 iCGRP (immunoreactive calcitonin gene-related peptide) 분비 조절에 미치는 영향.)

  • 오원만;김원재;최남기;박상원;황인남;김선헌
    • Restorative Dentistry and Endodontics
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    • v.26 no.5
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    • pp.436-442
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    • 2001
  • Neuropeptide such as calcitonin gene-related peptide and substance P may mediate neurogenic inflammation, but little is known about the regulation of neuropeptide release from rat spinal cord. Eugenol has been reported to reduce odontogenic pain and is known to have a structure similar to capsaicin, a potent stimulant of certain nociceptors. This study was done to examine the effect of capsaicin and eugenol on immunoreactive calcitonin gene-related peptide (iCGRP) release from rat spinal cord and whether eugenol regulates capsaicin-sensitive release of iCCRP or it evokes capsaicin-sensitive release of iCGRP. The dor-sal half of rat lumbar spinal cord was chopped into 200$\mu$m slices. They were superfused (500$\mu$l/min) in vitro with an oxygenated Kreb's buffer. The EC$_{50}$ of capsaicin on iCGRP release was measured. Eugenol (600$\mu$M and 1.2mM) and vehicle (0.02% 2-hydroxyl-$\beta$-cyclodextrin) were administered prior to stimulation of rat lumbar spinal cord with capsaicin. The amount of iCGRP release from rat lumbar spinal cord was measured by radioimmunoassay. The results were as follows : 1. iCGRP release from rat lumbar spinal cord was dependent on concentration of capsaicin. The EC$_{50}$ of capsaicin on iCGRP release was 3$\mu$M. 2. In the vehicle treated group, capsaicin (3$\mu$M) evoked a 14-fold increase over basal iCGRP level. 3. Administration of 600$\mu$M and 1.2mM eugenol evoked a 2.2-fold increase and a 2.3-fold increase over basal iCGRP level respectively. 4. Administration of 600$\mu$M and 1.2mM eugenol increased capsaicin evoked release of iCGRP by more than 50%. These results indicate that eugenol evoke CGRP release from central nervous system and potentiate the pain-inducing action of capsaicin on it.

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The Effect of Enhancers on the Penetration of Albuterol through Hairless Mouse Skin

  • Choi, Han-Gon;Rhee, Jong-Dal;Yu, Bong-Kyu;Kim, Jung-Ae;Kwak, Mi-Kyung;Woo, Jong-Soo;Oh, Dong-Hun;Han, Myo-Jung;Choi, Jun-Young;Piao, Mingguan;Yong, Chul-Soon
    • Journal of Pharmaceutical Investigation
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    • v.36 no.5
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    • pp.321-329
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    • 2006
  • Albuterol, a selective ${\beta}_2$-adrenergic receptor stimulant, has been introduced as a potent bronchodilator for patients with bronchial asthma, chronic obstructive bronchial disease, chronic bronchitis and pulmonary emphysema. The percutaneous permeation of albuterol sulfate was investigated in hairless mouse skin in vitro with and without pretreatment with enhancers. The enhancing effects of ethanol and various penetration enhancers such as terpenes, non-ionic surfactants, pyrrolidones, and fatty acids on the permeation of albuterol sulfate were evaluated using Franz diffusion cells. Among terpenes studied, 1,8-cineole was the most effective enhancer, which increased the permeability of albuterol sulfate approximately 33-fold compared with the control without enhancer pretrement, followed by d-limonene with enhancement ratio of 21.79. 2-Pyrrolidone-5-carboxylic acid increased the permeability of albuterol sulfate approximately 5.5-fold compared with the control. Other pyrrolidones tested showed only slight permeability enhancing effect with enhancement ratio less than 2.8. Nonionic surfactants showed moderate enhancing effects. Lauric acid increased the permeability of albuterol sulfate approximately 30-fold with decreasing the lag time from 2.85 to 0.64 hr. Oleic acid and linoleic acid showed enhancement ratio of 24.55 and 22.91, respectively. These findings would allow a more rational approach for designing formulations for the transdermal delivery of albuterol sulfate and similar drugs.

The Effect of Fatty Acids, Fatty Alcohols and Propylene Glycol on the Penetration of Clenbuterol through Hairless Mouse Skin (지방산, 지방 알코올 및 프로필렌글리콜이 클렌부테롤의 경피투과에 미치는 영향)

  • Lee, Yeong-Dae;Quan, Qi-Zhe;Jung, Si-Young;Rhee, Jong-Dal;Yong, Chul-Soon
    • Journal of Pharmaceutical Investigation
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    • v.29 no.4
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    • pp.329-335
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    • 1999
  • Clenbuterol, a selective ${\beta}_2-adrenergic$ receptor stimulant, has been introduced as a potent bronchodilator for patients with bronchial asthma, chronic bronchitis and pulmonary emphysema. For the purpose of developing a transdermal preparation for clenbuterol, we attempted to select an optimal solvent system and permeation enhancer among fatty acids and fatty alcohols which are known to accelerate the penetration of various drugs in permeation experiments using hairless mouse skin and Franz diffusion cell. Apparent partition coefficient of clenbuterol was increased as pH of buffer solution was increased and solubility of clenbuterol was increased as the percent of propylene glycol(PG) in buffer solution(pH 10) was increased. Permeability of clenbuterol from different buffer(pH 10)/PG solvent mixtures was decreased as the percent of PG in pH 10 buffer solution was increased and among the various enhancers studied, lauryl alcohol was found to be the most effective enhancer, increasing the permeability of clenbuterol approximately 76-fold compared with control. Lauryl alcohol$(0{\sim}2%)$ enhanced the permeability of clenbuterol concentration-dependently. In this study, the optimal solvent system for the penetration of clenbuterol was found to be 50/50 buffer(pH 10)/PG solvent mixture containing 2% lauryl alcohol.

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