• Title/Summary/Keyword: antidote

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Effect of Intravenous Lipid Emulsion on Clozapine Acute Toxicity in Rats

  • Yousefsani, Bahareh Sadat;Mohajeri, Seyed Ahmad;Moshiri, Mohammad;Jafarian, Amir Hossein;Hosseinzadeh, Hossein
    • Journal of Pharmacopuncture
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    • v.22 no.3
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    • pp.147-153
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    • 2019
  • Objectives: Many studies have been reported the efficacy of intravenous lipid emulsion (ILE) as an antidote on acute lipophilic drug toxicity. Clozapine, highly lipophilic dibenzodiazepine neuroleptics, is an important medication in the schizophrenia therapy regimen. Acute intoxication with antipsychotics is one of the main reasons for the referral of poisoned patients to the hospital. We expected that ILE could be used for the therapy of acute clozapine intoxicated patients. Methods: We used two groups of consisting of six male rats. Both groups received a toxic dose of clozapine (40 mg/kg) intravenously, via the tail vein. After 15 minutes, they were treated with intravenous infusion of 18.6 mg/kg normal saline (NS group), or 18.6 mg/kg ILE 20% (ILE group). We evaluated blood pressure (BP) and heart rate by power lab apparatus through the tail artery, ataxia by a rat rotary circle, seizure scores and death in multiple times after starting clozapine administration. For biochemical and pathological evaluations the samples of tissue and blood were taken. Results: Our results demonstrated that ILE 20% could return hypotension-induced clozapine better than normal saline. Furthermore, ataxia and seizure have rectified more rapidly and deaths reduced. Clozapine administration causes pancreatitis and lung injury but fat emulsion did not show an optimal effect on tissue damages caused by clozapine toxicity. Conclusion: In conclusion, ILE can remove toxic signs of clozapine same as other lipophilic medicines, however, clinical uses of ILE for this intention requires more appraisement to determine the precise implication and safety.

Acetaminophen Poisoning (아세트아미노펜 중독)

  • Chung, Sung-Pil;Kim, Seung-Ho;Lee, Hahn-Shick
    • Journal of The Korean Society of Clinical Toxicology
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    • v.6 no.1
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    • pp.1-8
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    • 2008
  • Acetaminophen (AAP) overdose can result in potentially serious hepatotoxicity. The ingested dose and time from ingestion to presentation are important prognostic factors. Toxic dose in adult is thought to be at least 10 g or 200 mg/kg. However, early management of acute overdose should be guided by the plasma AAP concentration. The antidote for AAP poisoning is N-acetylcysteine (NAC). It provides complete protection against hepatotoxicity if given within 8 h of acute overdose. If the concentration is above the possible toxicity line as predicted by the Rumack-Matthew nomogram, either the 72-hr oral or the 20-hr intravenous NAC regimen should be administered. NAC is also effective if started late in patients with established hepatic failure. This article summarizes the current consensus of clinical assessment and management for acute AAP overdose.

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Effect of Oxygen on the Antidotal Action of Thiosulfate in Cyanide Poisoning (시안화물중독(化物中毒)에 있어서 Thiosulfate 해독효과에 미치는 산소(酸素)의 영향(影響))

  • Yoo, Keun-Young
    • Journal of Preventive Medicine and Public Health
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    • v.15 no.1
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    • pp.161-166
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    • 1982
  • Cyanide poisoning is expected to be antagonized by the administration of oxygen, when it is administered in combination with the conventional cyanide antidote, sodium thiosulfate. However, the antidotal efficacy and its exact mechanism of oxygen in cyanide poisoning is still a controversial one. To test the effect of oxygen on the antidotal action of thiosulfate in cyanide poisoning, author designed this study on the dose-mortality patterns for potassium cyanide in mice. Potency ratios derived from $LD_{50}$ values were compared in groups of mice treated with sodium thiosulfate alone and sodium thiosulfate with oxygen. These results indicated that oxygen enhances the antidotal effect of sodium thiosulfate, effectively. This fact demonstrates that oxygen is of importance in the treatment of cyanide poisoning.

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Investigation of the Pharmacological Mechanisms and the R&D of Medical Countermeasures Against Nerve Agent Poisoning (신경작용제 해독제의 약리기전 및 연구개발)

  • Cho, Young
    • Journal of the Korea Institute of Military Science and Technology
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    • v.14 no.5
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    • pp.920-931
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    • 2011
  • Nerve agents are irreversible inhibitors of the cholinesterase enzyme. Exposure causes a progression of toxic signs, including hypersecretions, fasciculations, tremor, convulsions, respiratory distress, epileptiform seizures, brain injuries and death. A combined regimen of prophylaxis and therapy is the most effective medical countermeasure for dealing with the threat of nerve agent poisoning to military personnel. In this paper, the author investigated the updated technologies regarding various pre- and post-treatment drugs for nerve agents detoxification which are under development in several countries including Korea. Some characteristics of active ingredients in the formulations of drugs, their action mechanisms, and effectiveness were analyzed. Additionally, part of experimental data on the transdermal patch studied in ADD using beagle dogs was introduced.

Studies on the Bis (amino-alkyl-oxo) Oxalate Derivatives As a Antidote of Lead poisoning (Bis (\beta$-amino-alkyl-oxo) oxalate 유도체의 납 중독 해독에 관한 연구)

  • 최선아;유미례;노영수;정성현;정세영
    • Environmental Analysis Health and Toxicology
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    • v.4 no.3_4
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    • pp.1-6
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    • 1989
  • The effects of his ($\beta$-amino-ethyl-oxo) oxalate and bis ($\alpha$-amino-methyl-oxo) oxalate on the toxicity of lead acetate in rast were examined. Rats were given intraperitoneally at the dose of lead acetate 45 mg/kg. The exposure of lead acetate showed the 70% decrease of ALAD ($\delta$-amino levulinic acid dehydratase) activity in red blood cell. In vivo 122 mg/kg administration of bis ($\beta$-amino-ethyl-oxo) oxalate and bis ($\alpha$-amino-methyl-oxo) oxalate showed the 50% increase of ALAD activity, whereas 149 mg/kg administeration of Ca-EDTA had no effect. In vitro, the same results were obtained. Both compounds had hemolytic activity at concentrations higher than that required for showing the 50% ALAD activity increase in vivo.

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Development of Antitoxic Agents from Korean Medicinal Plants (Part 3) Repaired Effects of Methanol Fraction of Perilla Frutescens on 3T3 Fibroblast Treated with Cadmium (한국산 생약으로부터 해독물질의 개발(제3보) 카드뮴으로 처리한 3T3섬유모세포에서 소엽 메탄올 분획의 수복효과)

  • 한두석;유현경;곽정숙;백승화
    • Toxicological Research
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    • v.11 no.2
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    • pp.229-234
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    • 1995
  • This study was carried out to evaluate the cytotoxicity of cadmium on 3T3 fibroblast and to develop the antidote on 3T3 fibroblast which was injuried by $IC_{50}$ of cadmium. The groups for repaired effects were divided into 7 groups such as medium alone treated group. Cadmium treated $IC_{50}$ groups and 5 experimental groups $(IC_{50}$ cadmium plus $10^{-4}$ concentration of each methanol fraction). After incubation for 48 hrs in the same conditions, MTT (tetrazolium MTT), NR (neutral red) and SRB (sulforhodamine B protein) assay were measured. Light microscopic observations were also investigated. The ethyl acetate fraction of Perilla frutescens showed significantly repaired effect against cadmium cytotoxiclty and this fraction inhibited critical cell regeneration in light microscopy.

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Pharmacognostical Studies on the Folk medicine 'Koaeng I Bab' (민간약 괭이밥의 생약학적 연구)

  • Kim, Jeong-Myo;Park, Jong-Hee
    • Korean Journal of Pharmacognosy
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    • v.32 no.3 s.126
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    • pp.233-237
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    • 2001
  • Korean folk medicine 'Koaeng I Bab' has been used to cure hemorrhoid, boil and dermatopathy and as an antidote. The botanical origin of the crude drug has not been studied pharmacognostically. To clarify the botanical origin of 'Koaeng I Bab', the morphological and anatomical characteristics of the leaves of Oxalis species growing in Korea, i.e. O. acetosella, O. acetosella var. purpurascens, O. corniculata, O. obtriangulata were studied. As the result, the botanical origin of 'Koaeng I Bab' has been proved to be O. corniculata and O. acetosella var. purpurascens.

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Literature Review on the Pharmaceutical Effects and Utilization of Houttuynia cordata Thunb (어성초(Houttuynia cordata Thunb.)의 향약성 효과와 이용에 관한 고찰)

  • Ahn, Bin
    • Journal of the East Asian Society of Dietary Life
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    • v.12 no.1
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    • pp.1-6
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    • 2002
  • Houttuynia cordata Thunb. grown in wet earth in China, Japan and Korea, has often been cited in medical literature for its medicinal effects. In this paper, the pharmaceutical effects of Houttuynia cordata Thunb., featured in the East Asian literature were studied. It was revealed that it has a wide variety of uses, including remedial treat-ments for pneumonia, antidote, inflammation, syphilis, abscess, paralysis and gynecological diseases. Its application methods also are numerous: drinking as tea or squeezed juice, application to wounds, wet dressing, chewing raw roots and mixing with other plants, liquor and food materials. The major pharmaceutical effects are as follows: antibiosis, immunity enhancement, urination, pain relieving, vasodilator and cough lozenge.

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A Literature Study on Acute Laryngitis (급성(急性) 후두염(喉頭炎)에 대(對)한 문헌적(文獻的) 고찰(考察))

  • Jung, Chang-Ho;Kim, Yun-Hee
    • Journal of Haehwa Medicine
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    • v.14 no.1
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    • pp.113-128
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    • 2005
  • 1. Acute laryngitis is a hoarse voice or the complete loss of the voice because of irritation to the vocal folds. 2. Acute laryngitis belongs with the GeupHuEum, HuBi, HuPung in oriental medicine. 3. GeupHuEum is caused by wind and cold, weak of lung and kidney, evil energy of liver, sore throat, etc. It is treated with the methods of cooling lung and wetting, removing heat and changing phlegm, etc. 4. Hubi is caused by fire and wind, dampness, large lung. It is treated with the methods of removing heat and antidote, reinforcing and descending fire, bleeding by acupuncture, vomiting. 5. Hupung is caused by phlegm and heat of lung and stomach, wind and heat. It is treated with the methods of dispersing wind and removing heat and changing phlegm by medicine, acupuncture, moxibustion, vomiting, fumigation.

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Various injury patterns due to combustion (typical but unfamiliar to physicians and easy to miss) in Korea: a case report

  • Hyung Il Kim
    • Journal of Trauma and Injury
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    • v.36 no.4
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    • pp.393-398
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    • 2023
  • Patients transported from fire sites may exhibit various injury patterns. Major trauma, skin burn, inhalation burn, and carbon monoxide poisoning are typical injuries. However, most physicians may be unfamiliar that cyanide poisoning can frequently occur due to combustion. Cyanide poisoning is highly significant owing to high mortality and the existence of antidotes. I present a 35-year-old man who was transported from a burning building and suffered severe metabolic acidosis despite no major bleeding as well as mild carbon monoxide poisoning. I suspected cyanide poisoning and administered the antidote; subsequently, the patient showed improvement. The next day, sudden airway obstruction developed, and emergency endotracheal intubation was performed. The inhalation damage was detected only in the lower airway tract and not in the upper airway. Physicians should be aware of cyanide poisoning and inhalation burn to avoid missing treatment opportunities.