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스트레스로 유발된 희쥐의 면역억제에 대한 날록손의 영향
김현택,양병환,김정목,김광일,류재욱,윤충한,김시현 大韓神經精神醫學會 1995 신경정신의학 Vol.34 No.3
Objects: The present study addressed the effects of stress upon an opiate-mediated immuno-suppression. Method: Male Sprag-Dawley rats were used as subjects. Home cage control group had no stress condition and Skinner box control group was immobilized without electric shock. Conflict group received psychological conflict stress with electric shock depending on the coping behaviour. Pretreatment groups had received naloxone intraperitioneally and 15minutes later, received psychological conflict stress. And the natural killer cell cytotoxicity(NKCC) against YAC-1 murine lymphoma cells, proliferation of rat splenic lymphocytes stimulated with mitogen such as concanavalin-A and plasma concentration of corticosterone were measured. Results: The results show that exposure to stress produces significant decline in NKCC and lymphocyte proliferation, which are reversed by opioid antagonist(naloxone) and increase in plasma concentration of corticosterone in all experimental groups. Conclusion: Opioid system may play a major role in the modulation of the stress-induced immunosuppression.
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아편유사제 복용 중인 암성 통증 환자들에서 경구 Oxycodone/Naloxone으로 전환 후 발생한 금단증상
김정훈,송하나,이경원,강정훈,Kim, Jung Hoon,Song, Haana,Lee, Gyeong-Won,Kang, Jung Hun 한국호스피스완화의료학회 2017 한국호스피스.완화의료학회지 Vol.20 No.2
목적: 경구 oxycodone/naloxone 복합제는 아편유사제에 의해 유발되는 변비를 완화시키거나 예방하는 목적으로 사용되고 있다. Naloxone에 의해 oxycodone의 진통 효과가 상쇄되거나 금단증상이 나타난다는 보고는 거의 없었으나 저자는 실제 임상에서 몇몇 금단증상 예를 경험하였기에 이 환자들에 대한 조사 연구를 수행하였다. 방법: 2012년 1월 1일부터 2016년 12월 31일까지 경남 지역 암센터에 방문했던 진행성 암환자들로 oxycodone/naloxone extended-release tablets를 투약 받고 마약 금단증상이 나타났던 환자들의 의무기록을 후향적으로 조사하였다. 결과: 연구 기간 중 경구 oxycodone/naloxone을 처방 받은 1,641명의 암 환자 중, 총 10예(0.6%) 에서 마약 금단 증상을 겪었다. 금단증상 관련 통증 강도의 변화는 oxycodone/naloxone 투여 전 NRS 3에서 평균 NRS 6점으로 증가하였다. 금단증상 중 오한이 10예 중 7예에서 나타나 가장 많이 나타난 증상이었으며 그 외에 식은땀, 전신 쇠약감, 근육경련, 복부경련(각 5예), 불안(4예), 열, 어지럼증, 의식혼란, 하품(각 2예)의 순으로 빈번하게 관찰되었다. 결론: Oxycodone/naloxone extended-release 복합제에 의한 마약 금단증상은 흔하지는 않아도 적은 수의 환자에서라도 나타날 수 있다. 향후 이에 대한 다기관, 전향적 연구가 필요하다. Purpose: Oral naloxone is combined with oxycodone to alleviate or prevent opioid-induced constipation in cancer pain patients. However, there is still concern that oral naloxone may precipitate opioid withdrawal symptoms in patients on opioids. We retrospectively investigated clinical characteristics of cancer patients who experienced opioid withdrawal symptoms. Methods: We reviewed medical records of all patients who were prescribed with oral oxycodone/naloxone at a tertiary cancer center from January 1, 2012 through December 31, 2016. Eligible patients were screened based on demographics, opioid and naloxone dosages, clinical manifestation and pain intensity. Results: Among a total of 1,641 patients, 10 patients were selected. Seven patients were male, and the average age was 68.1 years. The median dose of naloxone that induced withdrawal symptoms was 20 mg. Most common withdrawal symptom was shivering (seven patients) followed by cold sweating (five), and muscle twitching (five). Other symptoms included restlessness, fever, dizziness, and yawning. Pain was exacerbated from the median intensity of numeric rating scale (NRS) 3 to NRS 6. Conclusion: Opioid withdrawal symptoms may occur when switching to oral oxycodone/naloxone for cancer patients who have been treated with other strong opioids. A prospective, multicenter study on this issue should be conducted in future.
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의학강좌 : 개원의를 위한 모범처방 ; 비만 치료의 최신 지견
김원준 ( Won Jun Kim ),이창범 ( Chang Beom Lee ) 대한내과학회 2016 대한내과학회지 Vol.90 No.2
There have recently been many advances in obesity treatment, including lifestyle modifications and pharmacological and surgical treatments. Specifically, pharmacological strategies have improved significantly. However, the history of the development of medications aimed at weight loss is complicated. The Federal Drug Administration (FDA) withdrew anti-obesity drugs such as fenfluramine, dexfenfluramine, and phenylpropylamine due to their unwanted side effects. Moreover, sibutramine was voluntarily withdrawn from the market and a new drug, rimonabant, has been suspended in the middle of a clinical trial due to unacceptable side effects. The FDA has approved four new anti-obesity drugs in recent years. Lorcaserin is a selective 5-hydroxytryptamine receptor 2c (5-HT2c) agonist. The pharmacological mechanism of action of this drug is similar to fenfluramine and dexfenfluramine, but lorcaserin is specific for 5-HT2c, which are located almost exclusively in the central nervous system and are not found in heart valves. Three phase 3 clinical trials for lorcaserin have been published recently; weight reduction was successful and no side effects involving the heart were found. Furthermore, the FDA has also approved phentermine/topiramate controlled-release (PHEN/TPM CR), which is composed of a combination of immediate-release phentermine and controlled-release topiramate. Weight reduction achieved with PHEN/TPM CR was demonstrated to be better than all other anti-obesity drugs. Lastly, the combination therapy bupropion/ naltrexone activates proopiomelanocortin neurons and inhibits opioid-mediated negative feedback by synergism. Similar to liraglutide, a long-acting analogue of the hormone glucagon-like peptide-1, this treatment showed significant weight loss and metabolic improvements. However, in addition to its efficacy, clinicians should consider its side effects before use. (Korean J Med 2016;90:121-126)
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