• Title/Summary/Keyword: Effect of drugs

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Antiepileptic Drugs in Children : Current Concept

  • Lee, Jeehun
    • Journal of Korean Neurosurgical Society
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    • v.62 no.3
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    • pp.296-301
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    • 2019
  • An epileptic seizure is defined as the transient occurrence of signs and/or symptoms due to abnormally excessive or synchronous neuronal activity in the brain. The type of seizure is defined by the mode of onset and termination, clinical manifestation, and by the abnormal enhanced synchrony. If seizures recur, that state is defined as epilepsy. Antiepileptic drugs (AEDs) are the mainstay of treatment. Knowledge about initiating and maintaining adequate AEDs is beneficial for the clinician who treats children with epilepsy. This article will delineate the general principles for selecting, introducing, and discontinuing AEDs and outline guidelines for monitoring adverse effects. In general, AED therapy following a first unprovoked seizure in children is not recommended. However, treatment should be considered after a second seizure. In children and adolescents, if they are seizure-free for at least 2 years, attempts to withdraw medication/s should be made, taking into account the risks vs. benefits for the individual patient. The decision on when and what AED to use should be tailored according to the patient. For optimal treatment, the selection of adequate AEDs can be achieved by considering the precise definition of the patient's seizure and epilepsy syndrome. Continuous monitoring of both therapeutic and adverse effects is critical for successful treatment with AEDs.

Inhibition of Herpes Simplex Viruses, Types 1 and 2, by Ginsenoside 20(S)-Rg3

  • Wright, Stephen M.;Altman, Elliot
    • Journal of Microbiology and Biotechnology
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    • v.30 no.1
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    • pp.101-108
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    • 2020
  • Infections by herpes simplex viruses have an immense impact on humans, ranging from self-limiting, benign illness to serious, life-threatening diseases. While nucleoside analog drugs are available, resistance has been increasing and currently no vaccine exists. Ginsenosides derived from Panax ginseng have been documented to inhibit several viruses and bolster immune defenses. This study evaluated 12 of the most relevant ginsenosides from P. ginseng for toxicities and inhibition of herpes simplex viruses types 1 and 2 in Vero cells. The effects of test compounds and virus infection were determined using a PrestoBlue cell viability assay. Time course studies were also conducted to better understand at what points the virus life cycle was affected. Non-toxic concentrations of the ginsenosides were determined and ranged from 12.5 μM to greater than 100 μM. Ginsenoside 20(S)-Rg3 demonstrated the greatest inhibitory effect and was active against both HSV-1 and HSV-2 with an IC50 of approximately 35 μM. The most dramatic inhibition-over 100% compared to controls-occurred when the virus was exposed to 20(S)-Rg3 for 4 h prior to being added to cells. 20(S)-Rg3 holds promise as a potential chemotherapeutic agent against herpes simplex viruses and, when used together with valacyclovir, may prevent increased resistance to drugs.

Induction of ER-stress by Heat Shock in the Thyrocytes

  • Kwon, Ki-Sang;Kwon, O-Yu;Yang, Young-Mo
    • Biomedical Science Letters
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    • v.12 no.4
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    • pp.435-438
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    • 2006
  • In eukaryotes, ER stress induces UPR (unfolded protein response) via IRE1 activation which sends a molecular signal for XBP1 mRNA splicing in the cytosol. During this mRNA splicing, 23 nt removed in which contains PstI site and then resulting XBP1 product is not digested with PstI restriction enzyme. In this study, using this XBP1 mRNA splicing mechanism, the effect of heat shock on thyrocytes is studied, because heat shock response in the thyrocytes needs more study to understand thyroid physiology under alternative environments. ER inducible drugs (tunicamycin, DTT, $Ca^{2+}$ ionopore A23187, BFA) induce ER stress in the thyrocytes. From 3 hours after heat shock, ER stress is induced and which is reversible when heat shock is without. While $Ca^{2+}$ ionopore A23187 is reversible from ER stress by washing out the drug, thapsigagin is irreversible. Other ER inducible drugs are not so sensitive to ER stress repairing. XBP1 mRNA splicing in a cell is very available method to detect ER stress. It needs only a small quantity of total RNA and processing also very easy.

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The Effect that CST gets to autonomic nerve system (두개천골치료가 자율신경계에 미치는 영향)

  • Sea, Hyun-Kyu;Kim, Byoung-Gon;Jung, Yeon-Woo
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.10 no.2
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    • pp.5-32
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    • 2004
  • We have studied the effect and application of CST which is the function and disease of the autonomic nerve system based on recovery of flexibleness of the autonomic nerve. CST purpose to keep sustenance of human body by recovering joints have limitation of mobility and controlling autonomic nerve system by diminution tense of the sympathetic nerve. CST makes well flowing of CSF by pressure the fourth ventricle of the brain or relaxation of soft tissues of the base of a cranial bone. There is no result of studies about CST in Korea yet. It will bring a benefit if it prove the effect of CST in countries depend on drugs way high such as Korea. It needs positive approach and definite research for the improvement.

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Studies on the Efficacy of Combined Preparations of Crude Drugs (IX) -Effect of 'Jakyakgamcho-Tang' on Anti-inflammatory and Antiulcerative Actions, and Motility of Isolated Intestine- (생약복합제제(生藥複合劑制)의 약효연구(藥效硏究) 제9보(第9報) -작약감초탕(芍藥甘草湯)이 장관(腸管), 위궤양(胃潰瘍), 부종(浮腫)에 대(對)한 영향(影響)-)

  • Hong, N.D.;Kim, J.W.;Jeong, G.M.;Kim, N.J.
    • Korean Journal of Pharmacognosy
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    • v.13 no.2
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    • pp.87-91
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    • 1982
  • This study was undertaken to investigate the effect of 'Jakyakgamcho-Tang' and parched 'Jakyakgamcho-Tang' on anti-inflammatory and antiulcerative actions, and motility of isolated intestine of mice. The results of this study were summarized as follows; Anti-inflammatory effect was showed markedly by the administration of water extract of 'Jakyakgamcho-Tang' and parched 'Jakyakgamcho-Tang'. Isolated intestine of mice was relaxed with the treatment of 'Jakyakgamcho-Tang' and parched 'Jakyakgamcho-Tang' and intestinal contraction induced by $BaCl_2$ and acetylcholine was also inhibited. The water extract of 'Jakyakgamcho-Tang' and parched 'Jakyakgamcho-Tang' were significantly inhibited Shay's ulceration in rats.

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The Effect of Human Recombinant Superoxide Dismutase Conjugated with Polyethylene Glycol on the Hepatic Toxicity of Acetaminophen (HrSOD-폴리에칠렌 접합체의 아세트아미노펜 간독성에 미치는 영향)

  • Yong, Chul-Soon;Park, Kyong-Ah;Oh, Doo-Man
    • Journal of Pharmaceutical Investigation
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    • v.25 no.4
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    • pp.313-322
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    • 1995
  • The covalent conjugation of human recombinant superoxide dismutase (hrSOD) with trichloros-triazine activated polyethylene glycol (PEG) 5000 formed soluble conjugates with molecular weight of 92KD, which retained $90{\sim}98%$ of original activity with a markedly prolonged plasma half-life of enzyme activity. The effect of hrSOD-PEG conjugates on acetaminophen (ACP)-induced hepatotoxicity was tested in male rats which were pretreated with 3-methylcholanthrene. HrSOD-PEG conjugates inhibited the hepatotoxicity produced by ACP, on the other hand, native hrSOD had no protective effect. The above results indicated that oxygen radicals might participate in the mechanism of the ACP-induced hepatotoxicity and that polymer conjugated-protein drugs with prolonged half-lives could be employed as an effective therapeutic agent.

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Inhibitory Activities of Three Compounds from Mucuna birdwoodiana on $3{\alpha}-Hydroxysteroid\;dehydrogenase$ (계혈등(Mucuna birdwoodiana)의 $3{\alpha}-Hydroxysteroid\;dehydrogenase$억제 성분)

  • Kwon, Yong-Soo;Lee, Jin-Hun;Kim, Chang-Min
    • Korean Journal of Pharmacognosy
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    • v.30 no.2
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    • pp.216-221
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    • 1999
  • The NAD(P)-linked $3{\alpha}-Hydroxysteroid$ $dehydrogenase(3{\alpha}-HSD)$ of rat liver cytosol is powerfully inhibited by the non-steroidal anti-inflammatory drugs in rank-order of their therapeutic potency, and this observation has now been developed into a rapid screen for predicting the potency of products that show anti-inflammatory effect. Five-plants were screened by using this method. Among them, BuOH-fraction of Mucuna birdwoodiana showed strong inhibitory effect on $3{\alpha}-HSD$, and three isoflavone compounds were isolated. Inhibitory activates of isolated compounds were compared.

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External Treatment of Carcinous pain in Journal of Chinese Medicine (중의치험례(中醫治驗例)를 중심(中心)으로 살펴본 암성(癌性) 동통(疼痛)의 외치법(外治法))

  • Lee, Yoon-Hee;Shin, Min-Kyu;Byun, Joon-Seok
    • THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY
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    • v.6 no.1
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    • pp.113-123
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    • 2000
  • Carcinous pain is severe and continuous so difficult to alleviate. Western drugs give rise to reaction such as anorexia, constipation, vomiting, general weakness and dyspnea, And they cause tolerence. External treatment is a way to put a patch or rub a liquid on the skin. The patch and liquid are made from herb medicine. In china, they have a good effect of alleviating carcinous pain to make use of external treatment. Usually they use the medicine with effect of reprecussion (消腫), removing obstruction(散結), activating blood flow and removing blood stasis (活血化瘀) such like Borneloum(?片). Bufonis Venenum (蟾?), Aconiti ciliane Tubber(草烏), Arisaematis Rhizoma(南星), Asari herba cum Radice (細辛) etc. We can get the alleviating effect more quickly and prevent reaction through external treatment.

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Studies on the Anti-inflammatory and Analgesic Activities of Ohyaksungisan (오약순기산(烏藥順氣散)의 소염 진통작용에 관한 연구)

  • Lee, Don-Il;Lee, Seong-Yim;Moon, Young-Hee
    • Korean Journal of Pharmacognosy
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    • v.27 no.3
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    • pp.184-189
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    • 1996
  • Ohyaksungisan, combined preparation of crude drugs, has been used for hemiplegia, arthralgia and paralysis in traditional Korean medicine. The anti-inflammatory activity of the aqueous extract from Ohyaksungisan(OSSE) was investigated on acetic acid-induced edema and adjuvant arthritis in rats. Acute toxicity and analgesic action in mice were also examined. Its anti-inflammatory activity on 5% acetic acid-induced edema and adjuvant arthritis was observed with oral administration. The acute toxicity showed 10% mortality at 2400 mg/kg (p.o), but was not showed at 1200 mg/kg (i.p). OSSE was showed to have significant analgesic action (P<0.05) at 150 mg/kg and this action was strengthened at 300, 600 mg/kg. The anti-inflammatory effect was showed significant preventive effect on the hind paw edema from 90 min. and the adjuvant arthritis, when orally administered for 19 days. showed significant inhibitory effect on the hind paw edema from the 5th day.

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Synthesis of Sesamol Derivatives and Biological Activities (Sesamol 유도체의 합성 및 생물활성)

  • Cha, Bae-Cheon
    • YAKHAK HOEJI
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    • v.52 no.2
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    • pp.131-136
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    • 2008
  • Sesamol, one of constituents isolated from sesame seed (Sesamum indicum L.) has been known to have natural antioxidant property. Nicotinic acid and clofibric acid have been used for treatment of hyperlipidemia. Sesamol derivatives prepared by conjugation with nicotinic acid (SJ-301) and clofibric acid (SJ-302) were expected to have various biological activity caused by synergistic effect of sesamol. Thus, this study were carried out to investigate the synthesis of sesamol derivatives from seasamol and antihyperlipidemia drugs and their biological activities. As a result, SJ-301 showed a stronger antihyperlipidemia activity in vivo and inhibitory effect on $TNF-{\alpha}$ release in vitro compared to the original agents such as sesamol, nicotinic acid and clofibric acid.