• Title/Summary/Keyword: double blind

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Anti-dementia Effects of Gouteng-san and Si-Wu-Tang

  • Watanabe, Hiroshi
    • Toxicological Research
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    • v.17
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    • pp.257-261
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    • 2001
  • Recently, a traditional medicine called Gouteng-san, which consists of eleven herbs, was reported to be effective in treating vascular dementia with a double-blind, placebo-controlled study. Gout-eng-san is also used for patients with vascular dementia in combination with Si-Wu-Tang. The effect of Gouteng-san and Si-Wu-Tang on deficit of learning behavior was investigated using step-down passive avoidance task in mice. Hot-water extract of Gouteng-san (1.5 and 6 g/kg, p.o.) significantly prolonged the step-down latency shortened by scopolamine. The extract of Uncaria hook (150 mg/kg, p.o.), one of the component herb of Gouteng-san, significantly prevented the decrease in the latency after scopolamine. Hot-water extract of Si-Wu-Tang (1.5 and 6 g/kg of dried herbs, p.o.) prevented dose-dependently scopola-mine-induced disruption qf learning behavior. Si-Wu-Tang also prevented the ischemia-induced deficit of learning behavior. Both hot water extract of peony and angelica (1.5 g/kg, p.o.), which are component herbs qf Si-Wu-Tang, prevented the scopolamine-induced learning behavior deficit. Scopolamine (10 uM) suppressed long-term potentiation (LTP) of population spike in the CA1 region of the rat hippocampal slices. Peoniflorin (0.1~ 1uM) extracted from paeony root significantly ameliorated scopolamine-induced inhibition of LTR These results suggest that improvement of deficit of learning behavior by Gouteng-san and Si-Wu-Tang is mediated by direct and/or indirect activation of the cholinergic system in the brain.

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A Double-Blind, Placebo Controlled-Trial of a Probiotic Strain Lactobacillus sakei Probio-65 for the Prevention of Canine Atopic Dermatitis

  • Kim, Hyejin;Rather, Irfan A.;Kim, Hyunwook;Kim, Sungsoo;Kim, Taeeun;Jang, Jaeyoung;Seo, Jimin;Lim, Jeongheui;Park, Yong-Ha
    • Journal of Microbiology and Biotechnology
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    • v.25 no.11
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    • pp.1966-1969
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    • 2015
  • Canine atopic dermatitis (CAD) is a ubiquitous, chronic inflammatory skin disorder prevalent in dogs, which results in production of abnormal levels of IgE antibodies in reciprocation to an allergen challenge. In this study, administration of the probiotic strain Lactobacillus sakei probio-65 for 2 months significantly reduced the disease severity index in experimental dogs diagnosed with CAD. In addition, one month pre-medication of L. sakei probio-65 revealed significant difference in the PVAS score in experimental dogs for both probio-65 and placebo groups. However, post 2 months treatment resulted in a significant decrease in the CASESI score values in the probio-65-treated group (p < .0.06).

Pain Control after Dental Surgery: Myprodol Versus Ibuprofen Versus Codeine (치과 수술후의 통증 관리: Myprodol 대 Ibuprofen 대 Codeine)

  • Han, Tae-Hyung;Shin, Byung-Seop;Kim, Jeong-Hye
    • The Korean Journal of Pain
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    • v.11 no.1
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    • pp.74-80
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    • 1998
  • Background: Myprodol, a newly introduced combination analgesics with codeine, ibuprofen and paracetamol was evaluated in the dental surgery patients for its efficacy and side effects. Methods: Total 60 ASA I or II outpatients dental surgical patients were randomly assigned into three groups(n=20 each). After various oral procedures, one of three oral analgesics, myprodol, ibuprofen or codeine, was prescribed to each patients in double blind fashion for three days. Each patient was followed carefully by daily phone calls for verbal analog pain scale, side effects and patient's satisfaction level. Results: Demographic data and duration of surgery revealed no statistical differences in all three groups. Myprodol group showed better verbal analgesic scores consistently for the study period than ibuprofen or codeine group. Adverse effects were minimal. Patients' satisfaction level was high in all three groups. Conclusion: We conclude that myprodol is an excellent oral analgesic for day-surgery based dental procedure patients. This effect appears to be synergistic among different analgesics rather than additive.

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The Minimal Effective Dose of Intrathecal Morphine for Postoperative Analgesia following Appendectomy (충수돌기 적출술후 진통을 위한 수막강내 투여 Morphine의 최소 유효량)

  • Kim, Wook-Gon;Lee, Kang-Chang;Kim, Tai-Yo
    • The Korean Journal of Pain
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    • v.3 no.2
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    • pp.125-130
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    • 1990
  • One hundred patients requiring appedectomy were studied to determine the minimal effective dose of intrathecal morphine for postoperative analgesia. In double-blind fashion, groups of 20 patients received either 0.02 mg (group I), 0.04 mg (group II), 0.06 mg (group III), 0.08 mg (group IV), or 0.10 mg (group V) intrathecally with 10% dextrose in water 2 ml. Group II to group V patients reported significantly less postoperative pain than group I patients as assessed by the Prince Henry pain scale and required significantly fewer analgesic interventions for 24 hours. The incidences of vomiting and pruritus were considerably high in all groups, but none of them required any treatment. The incidence of urinary catheterization due to urinary retention in group II to V was twice that of group I. No clinically evident respiratory depression occurred in any of the subjects. In conclusion, intrathecal morphine administration of 0.04 mg proved effective in reducing postoperative analgesic requirements and in eliminating postoperative pain following appendectomy and was not associated with significant side effects. It is very likely that such low dose intrathecal morphine would also work in other operations.

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Intrathecal Meperidine Plus Lidocaine for Prevention of Shivering during Cesarean Section

  • Rastegarian, Ahmad;Ghobadifar, Mohamed Amin;Kargar, Hossein;Mosallanezhad, Zahra
    • The Korean Journal of Pain
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    • v.26 no.4
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    • pp.379-386
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    • 2013
  • Background: Shivering related to spinal anesthesia may interfere with monitoring and is uncomfortable. The aim of the present study was to investigate low-dose intrathecal meperidine for the prevention of shivering after induction of spinal anesthesia in parturients with cesarean section. Methods: This was a prospective randomized, double-blind, placebo-controlled trial including 100 parturients, of American Society of Anesthesiologists (ASA) physical status I or II, scheduled for elective cesarean section under spinal anesthesia who were randomly assigned to a meperidine (0.2 mg/kg) plus hyperbaric lidocaine (5%, 75 mg, n = 50; group M) group or a placebo plus hyperbaric lidocaine (5%, 75 mg, n = 50; group L) group. Demographic and surgical data, adverse events, and the mean intensity for each parturient were assessed during the entire study period by a blinded observer. Results: There were no significant differences between the two study groups regarding the demographic and surgical data (P > 0.05). The incidence of shivering during the entire study period significantly decreased in the group of parturients who received intrathecal meperidine (P = 0.04). There were no significant differences in nausea and vomiting between the two groups. Conclusions: Low-dose intrathecal meperidine (10 mg) is safe and effective in reducing the incidence and severity of shivering associated with spinal anesthesia in parturients with cesarean section.

The Effect of Preoperative Dexamethasone Administration, according to Age and Gender on Postoperative Pain in Patients who Undergo Laparoscopic Choelecystectomy (복강경 담낭절제술에서 연령과 성별이 고려될 때 수술 전 Dexamethasone의 투여가 수술 후 통증에 미치는 영향)

  • Lee, Cheol;Kim, Tai-Yo
    • The Korean Journal of Pain
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    • v.21 no.1
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    • pp.51-56
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    • 2008
  • Background: Preoperative dexamethasone improves the surgical outcome after laparoscopic cholecystectomy(LC). The purpose of this study was to determine the effect of preoperative dexamethasone on the postoperativepain according to age and gender in patients who undergo LC.Methods: In this double blind prospective study, 400 patients, males or females :< 45 yr and males or femaless 65 yr (n = 50 in each of eight groups) who undergoing LC were randomized to receive dexamethasone 8mg (5 ml) or saline 5 ml intravenously 100 minutes before their operation, Postoperative pain was assessedon a visual analog scale (VAS) at 1, 6, 12, and 24 hour, and the time to administering the first postoperativeanalgesics was recorded.Results: Dexamethasone was administered without consideration for age and gender, and it reduced thepostoperative pain VAS score at 1, 6, and 12 hours, and the opioid analgesic requirement, but there was nosignificant difference between administering saline or dexamethasone in the same gender and age groups.Females U 45 yr who were administered saline had the most pain sensitivity and males S 65 yr who wereadministered dexamethasone had the least pain sensitivity.Conclusions: Preoperative dexamethasone reduces the pain intensity and opioid consumption, but does notreduce the pain intensity, according to age and gender in the patients undergoing LC. As a result, Preoperativedexamethasone should be considered for routine use for patients who are undergoing laparoscopic cho-lecystectomy. (Korean J Pain 2008; 21: 51 56)

Antihypertensive effect of an enzymatic hydrolysate from Styela clava flesh tissue in type 2 diabetic patients with hypertension

  • Ko, Seok-Chun;Jung, Won-Kyo;Lee, Seung-Hong;Lee, Dae Ho;Jeon, You-Jin
    • Nutrition Research and Practice
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    • v.11 no.5
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    • pp.396-401
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    • 2017
  • BACGROUND/OBJECTIVES: In this randomized, placebo-controlled, double-blind study, we evaluated the antihypertensive effects of enzymatic hydrolysate from Styela clava flesh tissue in patients with type 2 diabetes mellitus (T2DM) and hypertension. SUBJECTS/METHODS: S. clava flesh tissue hydrolysate (SFTH) (n = 34) and placebo (n = 22) were randomly allocated to the study subjects. Each subject ingested two test capsules (500 mg) containing powdered SFTH (SFTH group) or placebo capsules (placebo group) during four weeks. RESULTS: In the SFTH group, systolic and diastolic blood pressure decreased significantly 4 weeks after ingestion by 9.9 mmHg (P < 0.01) and 7.8 mmHg (P < 0.01), respectively. In addition, the SFTH group exhibited a significant decrease in hemoglobin $A_{1c}$ with a tendency toward improvement in homeostasis model assessment of insulin resistance, triglyceride, apolipoprotein B and plasma insulin levels after 4 weeks. No adverse effects were observed in other indexes, including biochemical and hematological parameters in both groups. CONCLUSION: The results of our study suggested that SFTH exerts a regulatory, antihypertensive effect in patients with T2DM and hypertension.

A Double-blind, Randomized, Placebo-controlled Intervention Study of the Efficacy and Safety of 'Atomento solution & cream' in patients with Atopic Dermatitis (아토피 피부염 환자에 대한 위약 대조 시험법에 의한 'Atomento solution & cream'의 유효성 및 안전성을 평가하기 위한 단일기관, 무작위배정, 이중맹검, 위약대조, 비교 임상연구)

  • Hwang, Sun-Bok;Park, Sung-Min;Oh, Min-Jee;Kim, Hee-Taek
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.22 no.2
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    • pp.223-237
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    • 2009
  • 본 임상연구는 임상연구 모집 공고를 통하여 모집된 대상자 중 Atopic Dermatitis Research Group (2005) 한국인 아토피 피부염 진단기준에 따라 아토피 피부염으로 판정되고 현재 약물(한약, 양약)치료나 외용제 치료를 하고 있지 않은 만 5$\sim$50세의 아토피 피부염 환자를 대상으로 하였다. 피험자들을 이중맹검, 블록무작위배정하여 시험군과 대조군으로 나누어 6주간의 시험기간 동안 육안적 평가, 혈액학적 검사, 피부측정 장비를 통한 기기적 평가를 시험 전후에 실시하여, 시험군에 사용된 제품이 대조군 사용된 제품에 비하여 얼마나 효과적으로 아토피 피부염으로 손상된 피부 장벽을 회복하는지 관찰하였다. 본 임상시험을 통해 'Atomento solution & cream'이 손상된 피부장벽을 회복시키고 피부 보습력을 증가시켜 아토피 피부염에 효과적이었으며, 인체에 이상반응이나 부작용 없이 안전하게 사용될 수 있음을 확인하였다.

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Amiodarone Versus Propafenone to Treat Atrial Fibrillation after Coronary Artery Bypass Grafting: A Randomized Double Blind Controlled Trial

  • Nemati, Mohammad Hassan;Astaneh, Behrooz
    • Journal of Chest Surgery
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    • v.49 no.3
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    • pp.177-184
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    • 2016
  • Background: Atrial fibrillation (AF) is one of the most common complications after cardiac surgery. Several therapeutic and preventive strategies have been introduced for postoperative AF, but the treatment and prophylaxis of AF remain controversial. We aimed to compare the efficacy of intravenous amiodarone and oral propafenone in the treatment of AF after coronary artery bypass grafting (CABG). Methods: This was a randomized controlled trial performed in two hospitals in Shiraz, Iran from 2009 to 2012. We included all patients who underwent elective CABG and developed AF postoperatively. The patients were randomly assigned to receive propafenone or amiodarone. The duration of AF, the success rate of the treatment, the need for cardioversion, the frequency of repeated AF, and the need for repeating the treatment were compared. Results: The duration of the first (p=0.361), second (p=0.832), and third (p=0.298) episodes of AF, the need for cardioversion (p=0.998), and the need to repeat the first and second doses of drugs (p=0.557, 0.699) were comparable between the study groups. Repeated AF was observed in 17 patients (30.9%) in the propafenone group and 23 patients (34.3%) in the amiodarone group (p=0.704). Conclusion: Oral propafenone and intravenous amiodarone are equally effective in the treatment and conversion of recent-onset AF after CABG.

A Performance Measurement of Multi-channel Audio codec for HDTV Satellite Broadcasting (고선명 TV 위성 방송을 위한 멀티 채널 오디오의 성능 평가)

  • 김성한;장대영;홍진우
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.1 no.1
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    • pp.71-76
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    • 1997
  • In this paper, we describe simulation results of subjective assessments with bit rate variation of multi-channel audio codec system for the services of HDTV satellite broadcasting services. Based on this experiment results, we also describe the specification and subjective performance results for 4-channel audio codec. For multi-channel, bit rates are 384,320,256,128kbps and the results show that 320kbps bit rate is needed to compare with the original and the reproduced signal. Based on this, for 384kbps for 4-channel audio codec, three items that achieve a diffgrade worse than -0.5 are due to the noise of analog output module. This system is satisfied for the audio codec of the HDTV system.

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