The analgesic effects of DA-5018, a new caosaucin derivative, were evaluated in various experimental pain models. Drugs were administered subcutaneously or topically. When drugs were administered subcutaneously, 1) the $ED_{50}$ of DA-5018, morphine . HCI, capsaicin and acetaminophen were 0.091-2.0, 0.3-4.3, 1.4-26.5 and 45.4-643 mg/kg, respectively in various pain or inflammatory models including acetic acid writhing, formalin, tail flick, Randall-Selitto, hot plate and crouton oil-induced ear edema test, 2) the AD2 values (the dose for doubling of pain threshold of vehicle control) of DA-5018, capsaicin and ketoprpgin were 1.07 $\pm$ 0. 18, 23.47$\pm$4.46 and 2.97$\pm$0.43 mg/kg in Freund's complete adjuvant (FCA)-induced arthritic pain model. And by topical application, 1) neither DA-5018 0.3% cream nor Zostrix-HP (capsaicin 0.075%) were effective in formalin test, 2) although DA-5018 0.3% cream significantly inhibited the croton oil-induced ear edema being better than Zostrix-HP and Kenofen (ketoprofen 3%). 3) In FCA model, DA-5018 0.3% cream reversed the decreased pain threshold of arthritic rat from 136.4 g (day 0) to 289.0 g (day 5) and 250.1 g (day 10), which was similar to Zostrix-HP. These results suggest that DA-5018 administered subcutaneously has a potent and broad analgesic spectrum than nonsteroidal antiinflammatory drugs against acute and chronic pain, and by topical application it exerts comparable analgesic and antiinglammaatory effects to capsaicin cream.
This study was designed to evaluate the pain control effect by morphine injection to masticatory muscle pain patients. Patients with masticatory muscle pain visited the Department of Oral Medicine, Kyung Hee University Dental Hospital were recruited to this study and diagnosed by RDC/TMD. Experimental group were divided into three group; saline injection group(n=10), lidocaine injection group(n=10) and morphine injection group(n=10). Evaluation list was the subjective pain evaluation(visual analogue scale, Mc Gill pain questionnaire, pain drawing) and the objective pain evaluation(pressure pain threshold, pressure pain tolerance) and evaluation time was injection before, after 10min, 30min, 60min and then it was analyzed statistically. The results were as follows : 1. The subjective pain evaluation and the objective pain evaluation were significantly different statistically in within subject effects(p<0.001). 2. The subjective pain drawing evaluation(p<0.001) were significantly different statistically in between subject effects. 3. The objective pressure pain threshold evaluation(p=0.025) were significantly different statistically in between subject effects. 4. The morphine injection group(p=0.001) were more significantly different than the saline injection group statistically in the subject pain drawing evaluation. Therefore, it was considered that the morphine injection was effective to pain control for masticatory muscle pain patients within 60 minute.
The Journal of Korean Academy of Orthopedic Manual Physical Therapy
/
v.28
no.2
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pp.1-6
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2022
Background: This study investigated the effects of Kinesio taping application on lower back pressure pain and balance ability among university students with chronic lower back pain. Methods: A total of thirty university students between 20 to 30 years of age with chronic lower back pain were divided randomly into two groups, the control and the experimental group. In the control group (n=15), placebo taping was applied to the lumbar region. In the experimental group (n=15), Kinesio taping was applied to the erector spine muscles of the lower back. The groups were assessed for lower back pressure pain and balance ability, before and after the taping application. Pain was measured by the pain pressure threshold (PPT), and balance was measured using the good balance system (GBS). Results: There were significant improvements in both the PPT and GBS of the Kinesio taping group compared to pre-treatment values (p<.05), while the placebo taping group showed no significant change (p>.05). In addition, the Kinesio taping group had a statistically significant difference in PPT and GBS compared to the placebo taping group (p<.05). Conclusion: The Kinesio taping application is more effective than the placebo taping application in the improvement of lower back pressure pain and balance ability among university students with chronic lower back pain.
Delayed onset muscle soreness is a sensation of discomfort that occurs 24 h after exercise, and it is associated with the performance of unfamiliar and high force muscle work, such as eccentric contractions. The injury to the muscle has been well described but the mechanism underlying the injury is not fully understood. Although the pathophysiological processes underlying delayed onset muscle soreness are not completely understood, many researchers have investigated various treatments in a attempt to reduce the soreness. Physical therapy is the most importance techniques to reduce delayed onset muscle soreness. The purpose of this study is to investigate the effect of a cryotherapt on DOMS. Thirty subjects were randomly assigned to experimental group : control, cryotherapy, and placebo group. Elbow flexion range, mechanical pain threshold. and subjective pain were measured 30 min before DOMS was induced and 24, 48, 72 hours after DOMS was induced. The results of this study were as follows: 1. Elbow flexion range showed significant difference each time, especially at 48 and 72 hours 2. Mechanical pain thershold and subjectively pain showed no significant difference between group.
Postoperative pain is one of the most frequently occurred pain in hospitals, but it has been underestimated because it is only a part of postoperative physiological Process and may disappear in time. It is necessary that nurses me the relaxation technique, planning and implementing by themselves independently, to reduce this postoperative pain. This study is aimed at showing the effect of relaxation technique on reduction of postoperative pain, and exploring the factors influencing postoperative. pain Fifty-seven patients with abdominal surgery who admitted in attacked D Medical Center to K University in Daegu have been studied. Of them twenty-nine were experimental group and the remaining twenty-eight were control group. This study has been conducted for collecting data through interviews and observation from August 23 to October 24, 1984. The tools of this study were two kinds: Postoperative Pain Scale is obtained from a review of references by the researcher, and relaxation technique, designed to use postoperative setting adequately, is also obtained from a review of references by the researcher. After confiriming no significant differences between the two groups, the hypotheses were statistically verified by x²-test, t-test, and pearson Correlation Coefficient. The results of this study are summerized as follows; * The nam hypothesis that the experimental group who use relaxation technique will have less degree of postoperative pain than the control group who don't use relaxation technique is devided into three sub-hypotheses. 1. The first sub-hypothesis that the experimental group will have less score of postoperative pain than control group was accepted (t=7.810, p <.01). Even with controlling pain threshold, showing difference in some degree between the two groups, the experimental group has less score of postoperative pain than the control group. Therefore this confirms the acceptance of the first sub-hypothesis more strongly. 2. The second sub-hypothesis that the expermental group will have less frequency of analgesics than the control group is accepted (x²=9.85, p <.01). 3. The third sub-hypothesis that the experimental group will have less variation of pulse, respiration, and blood pressure between pre End post operative periods than the control group is rejected. So this hypothesis is reverified through comparing the variation of pulse, respiration, and blood pressure between pre and post changing Position to measure the pure effect of relaxation technique. pulse and respiration is significantly lowered in the experimental group (t=7.209, p<.01, t=3.473, p<.01), but systolic and diastolic blood pressure is not different significantly between the two groups (t= 1.309, p>.05, t=1. 727 p>.05). Therefore the third sub-hypothesis is partially accepted. Conclusively, the researcher thinks that it is necessary that nurses should provide patients with relaxation technique to reduce postoperative pain, and to increase independence of nursing.
Kim, Kyung-Yoon;Sim, Ki-Cheol;Kim, Gye-Yeop;Choi, Chan-Hun;Jung, Jai-Gon;Chung, Jae-Sun;Jeong, Hyun-Woo
Journal of Physiology & Pathology in Korean Medicine
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v.25
no.6
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pp.1000-1007
/
2011
This study was conducted to determine the analgesic effect of onion and acanthopanax senticosus mixture extract using the rheumatoid arthritis rat model. Rheumatoid arthritis model was made by the intradermal injection of type II collagen emulsified. Rats were divided into four groups: (1) Sham group(n=5), (2) Control group(administered DW 3 $m{\ell}$/1 day after RA induced, n=7), (3) Experimental group I(administered Onion extractor 600 mg/3 $m{\ell}$/1 day after RA induced, n=7). (4) Experimental group III(administered Onion and Acanthopanax senticosus mixture extractor 600 mg/3 $m{\ell}$/1 day after RA induced, n=7). After that, we examined the arthritic index, paw edema, pain threshold at 1st, 14th, 28th days. And also we examined histopathologic study(safranin-O green), immunohistochamical stain(COX-2) of knee joint at 28th days. Arthritic index, paw edema and pain threshold test were decrease in experimental group I, II than control group. Especially group II was most significantly inhibit effect than the other groups at 28th days. On the histopathologic view, all experimental groups were relieved and reproduced the erosion of arthritic site compared with control group. All experimental groups were COX-2 positive cells in the immunohistological stain of the knee joint were significantly decreased compared with control group. Especially group II was most significantly decreased than the other groups at 28th days. Onion and Acanthopanax senticosus mixture extractor can be used for curing rheumatoid arthritis. Anti-inflammatory effects may be somewhat better in combination of Onion and Acanthopanax senticosus.
Background: The purpose of this study was to investigate the effects of WBC on the pressure pain threshold, CK and LDH after exercise-induced muscle injury. Design: A Randomized Controlled Trial. Methods: In this study, these subjects were assigned into three groups, a control group (n=10), experiment group I (n=10) and experiment group II (n=10). The subjects in experimental group I were intervened by WBC (-130℃, 3 minutes) before induced EIMD, experimental group II were intervened by WBC (-130℃, 3 minutes) after induced EIMD and control group weren't by any intervened after induced EIMD. Results: First, In the comparison of the PPT, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the PPT of experimental group II was significantly larger than those of other groups (p<.01). Second, In the comparison of the CK, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the CK of experimental group II was significantly smaller than those of other groups (p<.001). Third, In the comparison of the LDH, there were significant variations with the lapse the time in three groups (p<.01) and there was a significant interaction of time and group (p<.001). In the among group comparison, the LDH of experimental group II was significantly smaller than those of other groups (p<.001). Conclusion: The above results revealed that the WBC intervention after an exercise had a positive effect of muscle function after EIMD.
This investigation was carried out to evaluate the effect of Transcutaneous Electric Nerve Stimulation (TENS) to experimentally induced masticatory muscle pain and muscular fatigue. Twenty-nine healthy volunteers (18 men and 11 women, aged $26.1{\pm}4.7$ years) without past history or present symptoms of temporomandibular disorders were participated in this study. All of the subjects were randomly assigned to experimental group and control group, after at least 3 days interval, two groups were reassigned conversely. Subjects assigned to experimental group were received TENS and others assigned to control group were received sham-TENS therapy for 45 minutes, respectively. The changes of Visual Analogue Scale (VAS), Pressure Pain Threshold (PPT), and EMG power spectrum were measured on the masseter muscle both before and after sustained fatiguing contraction in each group. The major findings of this study are as follows : 1. PPTs and median frequencies of masseter muscles were significantly decreased after sustained isometric contraction resulting in muscular fatigue. 2. In experimental group received TENS therapy, PPTs measured both before and after occurrence of experimentally induced muscular fatigue were significantly increased. 3. In experimental group received TENS therapy, the changes of PPTs during sustained isometric contraction resulting in muscular fatigue were significantly decreased. 4. In experimental group received TENS therapy, VAS measured after occurrence of experimentally induced muscular fatigue was significantly decreased. 5. Although there were not statistical significances, endurance time was increased in experimental group received TENS therapy and decreased in control group received sham-TENS therapy. 6. In experimental group received TENS therapy, the changes of median frequencies were the less decreased and the slope of median frequency shift was the more increased during endurance time than in control group, however, there were not statistical significances.
Kim, Suhn-Yeop;Ryu, I-Hwa;Park, Eun-Haw;Bae, Hye-Jin
Journal of Korean Physical Therapy Science
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v.3
no.3
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pp.25-34
/
1996
The purpose of this experimental study was conducted to examine the most effective modality between two methods of cold application(ice pack and cold spray), the most effective length of time for the application and the continuing effect after each type of cold application. Sixty students were assigned randomly to each of two cold application methods; (a) ice pack, (2) cold spray. Each methods was applied to the posterior surface of right forearm with subject in the sitting position. Skin temperature and the electrical stimulation induced pain threshold were measured before each application and every five degree ($^{\circ}C$) decline point after ice pack application. They were also measured point of minimum skin temperature after cold spray application. The results of this study are as follows; 1. Skin temperatures according to the cold spray application decreased to a range of $4.2^{\circ}C{\sim}9.2^{\circ}C$(male, p<0.001), $3.6^{\circ}C{\sim}7.6^{\circ}C$(female, p<0.001). 2. Pain threshold according to the cold spray application increased to a range of $0.6mA{\sim}1.9mA$(male, p<0.01), $1.2mA{\sim}3.86mA$(female, p>0.05).
Objectives : This study was purposed to investigate the Anti-inflammatory and Analgesic Effects of Gold injection Aqua-acupuncture on the experimental model of rheumatoid arthritis. Methods : The experimental groups were divided into 4 groups : Control group (group injected with normal saline), J-NS (group injected with normal saline into bilateral Choksamni(ST36)), J-GS (group injected with Gold Injection into bilateral Choksamni(ST36)), and N-GS (injected with Gold Injection into the blank locus of the root of mouse tail). In addition, Diclofenac-Na as a comparative medicine is injected into bilateral Choksamni(ST36) and the blank locus of the root of mouse tail. So we measured the mice paw edema induced by Carrageenin and Dextran, the chronic rat paw edema induced by adjuvant, vascular permeability induced by Acetic acid in mice, the writhing syndrome induced by Acetic acid in mice, the heat-induced pain threshold in mice. Results : The following result have been obtained. 1. The mice paw edema induced by Carrageenin was significantly decreased in J-GS as compared with the control group. 2. The mice paw edema induced by Dextran was significantly decreased in J-GS and N-GS as compared with the control group. 3. The chronic rat paw edema induced by Adjuvant was significantly decreased in J-GS and N-GS as compared with the control group. Serum Iron content was significantly decreased in J-GS and N-GS as compared with the control group. But the effect on the Serum Copper contents has no significance statistically. 4. Vascular permeability induced by Acetic acid in mice was significantly decreased in J-GS and N-GS as compared with the control group. 5. The level of Acetic acid-induced Writhing syndrome and Heat-induced Pain Threshold in mice were all significantly decreased in J-GS and N-GS as compared with the control group. Conclusion : According to the result, gold injection aqua-acupuncture has significant anti-inflammatory and analgesic effects on the experimental model of rheumatiod arthiritis.
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