• 약학회지
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• 제29권1호
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• pp.43-49
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• 1985

Polysaccharides obtained from Sappan Lignum, Mori Radicis Cortex and Olibanum were examined for their liver protective effects against carbon tetrachloride-and D-galactosamine intoxication in ICR-mice. Hexobarbital sleeping time and serum transaminases (S-GOT and S-GPT) were measured as parameters for the evaluation of liver protective effects. All polysaccharides tested in this experiment showed remarkable positive effects on the prevention of hepatic intoxication with carbon tetrachloride-and D-galactosamine. Much better liver protective effects of polysaccharides were observed in D-galactosamine-liver injuries than in carbon tetrachloride-injuries.

• 생약학회지
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• 제11권2호
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• pp.85-94
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• 1980

In this paper, we studied what the drug name of Sang-Baik-Pi(桑白皮) Mori Cortex Radicis) is, how to collect it; and how the chief symptoms had changed in the chinese medical references and herbological literatures and formularies. Also we bibliographically analyzed in the herbological way the drugs combinated with Sang-Baik-Pi and their active principles among the prescriptions in the famous medical book; 'Dong-Ui-Bo-Gam', (東醫寶鑑) of our country. Finally, we concluded as foolow. Numerous names of botainical origin were described, but it was not recorded that San-Keun-Baik-Pi(桑根白皮) in old days is different from root bark of Morus sp. in this times. Sang-Baik-Pi has been a common designation since Ming dynasty (AD 1500). Collections of it were independent of seasons, it could effect perfectly over 10 years old. And its cork layer should be removed after collections, it was especially emphacised that root bark on ground was poisonous. The chiefly cured symptoms with Sang-Baik-Pi were constantly not different from the contents of 'Shin-Nong-Bon-Chau-Kyung'(神農本草經) in ancient times, but it has been developed since Ming dynasty. Its uses are widely extended to a surgical and dermatologic desease; rheumatis, beriberi and diabetes in this times. and its efficacies depend upon curing. Prescriptions on Sang-Baik-Pi that were prescribed in 'Dong-Ui-Bo-Gam' are there, 177 drugs combinated with it. Glycyrrhizae Radix is most frequently combinated with Sang-Baik-Pi(frequently 68%). It is proved that Armeniacae Semen, Platycodi Radix etc, in the order take strong effects on anti-tussive, anti-phlogistic, diuretic, anti-pyretic etc. It is expressed 34 times, frequently, that a dose is 3.75g, and it shows that a usual doses is 2-4g. As the above prescriptions are classified, the results is as follows, respiratory tract desease is most frequently in 69 prescriptions, the next gastrointestinal tract 13 times, diuretic 12 times, and antipyretic 11 times. Therefore, Sang-Baik-Pi contains a good remedial value chiefly of the effects upon the respiratory diseases.

• 대한의생명과학회지
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• 제11권3호
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• pp.417-420
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• 2005

To investigate the anti-obesitic effect of FD extract which consisted of Mori radicis Cortex, Hoelen, Pueraria radix, Schizonepetae spica, Carthami Flos, Bupleuri radix and Saposhnikoviae radix in high-fat diet-fed female lean Zucker rats. Obesity was induced by feeding high-lipid diet contained $3\%$ corn oil and $1\%$ cholesterol for 8 weeks, in which FD extract was added to the diet for treatment group. The rats fed on the high fat diet showed increased gain of body weights, leading to enhanced feed efficiency ratio. Moreover high-fat diet induced hepatic lipid peroxidation and hyperlipemia. The body weight, food efficiency ratio and lipid peroxidation in the liver was decreased as compared with the rats fed on the high fat diet by FD extract. With all such changes, the blood biochemistry about lipid was, if anything, risen. These results suggest that FD extract was supposed to have effective ingredients for improving obesity for controlling adipose tissue.

• 대한본초학회지
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• 제29권5호
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• pp.1-8
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• 2014

Objectives : To prove the channel-tropism theory of herbal medicines on diabetes mellitus as emaciation-thirst disease in Korean Medicine Theory, we investigated the selective therapeutic effects of Mori Cortex Radidus (MCR), Schisandrae Fructus (SF), Anemarrhenae Rhizoma (AR) for the upper emaciation on different organs in high fat and high sucrose (HF/HS) feeding-induced prediabetic mice. Methods : Diabetes in C57BL/6 mice was induced by the administration of high fat (45 kal%) and high sucrose (32 kal%) for 8 weeks, and them treated with each extract at 250 or 500 mg/kg body weight for 4 weeks (once a day). Oral glucose tolerance test and body weight was measured once a week. Insulin, total cholesterol, triglyceride, ${\gamma}GTP$, GOT and GPT were measured in the sera of all mice. Histopathological changes of different organs, lung, heart, pancreas, stomach, liver, and kidney were observed by H&E staining. Results : The results revealed that MCR extract inhibited the impaired glucose tolerance and lung damage, and increased serum insulin levels in HF/HS-induced prediabetic mice. SF extract inhibited the impaired glucose tolerance and lung damage, increased serum insulin levels, and decreased serum triglycerige levels. Meanwhile, AR extract inhibited the impaired glucose tolerance and lung damage, and decreased serum levels of insulin, total cholesterol and triglycerige levels. Conclusions : These results demonstrated that MCR, SF, and AR extract as the upper emaciation herbal medicines were followed their channel-tropism theory like a lung, and may have a selective therapeutic potential for control of diabetic stage.

• 대한한의학회지
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• 제44권4호
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• pp.121-135
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• 2023

Objectives: This study aimed to establish and provide reliable information for general public, based on expert consensus, on the risks of misuse of medicinal herbs for food and pure food ingredients for the fetus during pregnancy. Methods: A panelist of seven traditional Korean medicine (TKM) gynecologists responded to a questionnaire summarizing the fetal safety literature for twenty-five medicinal herbs for food and pure food ingredients derived from medicated diet (藥膳, Yaksun) recipes during three online Delphi rounds anonymously. Results: Ginkgonis Semen (Ginkgo nut), Illici Veri Fructus (Star anise), lavender, bitter gourd, and parsley were agreed at the level 1 of "Do not consume". These five ingredients were recognized as having significant risks both in the literature evidence and in expert opinion. Rosemary, Citri Unshius Pericarpium, Discoreae Rhizoma, lemongrass, Schisandrae Fructus, Cassiae Semen, Foeniculi Fructus, Mori Fructus, Cinnamomi Cortex, and Astragali Radix were agreed at the level 2 of "consultation with TKM practitioner is required". Conclusion: Based on the consensus of a seven-member expert panel of TKM gynecologists, consumption of Ginkgonis Semen (Ginkgo nut), Illici Veri Fructus (Star anise), lavender, bitter gourd, and parsley should be avoided by pregnant women. For Rosemary, Citri Unshius Pericarpium, Discoreae Rhizoma, lemongrass, Schisandrae Fructus, Cassiae Semen, Foeniculi Fructus, Mori Fructus, Cinnamomi Cortex, and Astragali Radix, the level 2 advisory may be recommended to use with caution and to consult a TKM practitioner for advice on consumption, dose, and duration.

• 대한한의학방제학회지
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• 제20권1호
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• pp.123-132
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• 2012

Objectives : The purpose of this study is to find out herb-pair prototype composed of Zanthoxyli Fructus, to examine compatibility regulation between them and to classify them into seven features of compatibility. Methods : To search usages of Zanthoxyli Fructus compatibility, we have investigated the classics of herb and prescription such as "五十二病方"(Fifty-two kinds of Diseases), "黃帝內經"(The Medical Classic of Yellow Emperor), "傷寒論"(Treatise on Febrile Caused by Cold), "金匱要略"(Synopsis of Prescriptions of The Golden), "附廣肘后方"(Handbook of Prescriptions for Emergencies), "本草綱目"(Compendium of Materia Medica), "得配本草"(Deukbae Materia Medica). Results : In these books Zanthoxyli Fructus was paired with below herbs; 桂(Cinnamomi Cortex), 薑(Zingiberis Rhizoma), 吳茱萸(Evodiae Fructus), 細辛(Asari Radix), 茴香(Foeniculi Fructus), 肉荳蔲(Cistanches Herba), 釜下土(Terba Flava Usta), 益智仁(Alpinae Oxyphyllae Fructus), 飴(Saccharum Granorum), 葱白(Allii Radix), 梨(Pyrus), 牙皂(Gleditsia Fructus), 杏仁(Armeniacae Amarum Semen), 蕎麥粉(Fagopyrum esculentum Moench), 胡粉(Minium), 白朮(Atractylodis Rhizoma White), 蒼朮(Atractylodis Rhizoma), 麻子仁(Cannabis Fructus), 大麥蘗(Hordei Fructus Germiniatus), 麴(Massa Medicata Fermentata), 生地黃(Rehmanniae Radix), 茯苓(Poria), 牡蛎(Ostreae Concha), 白礬(Alumen), 雄黃(Realgar), 烏頭(Aconiti Radix), 附子(Aconiti Lateralis Preparata Radix). Conclusions : Zanthoxyli Fructus herb-pair classified by seven features of compatibility are as follows; 1. Mutual reinforcement compatibility with : Cinnamomi Cortex, Zingiberis Rhizoma, Evodiae Fructus, Asari Radix, Foeniculi Fructus, Cistanches Herba, Terba Flava Usta, Alpinae Oxyphyllae Fructus, Saccharum Granorum, Allii Radix, Pyrus, Gleditsia Fructus. 2. Mutual assistance compatibility with : Armeniacae Amarum Semen, Fagopyrum esculentum Moench, Minium, Atractylodis Rhizoma White, Atractylodis Rhizoma, Cannabis Fructus, Hordei Fructus Germiniatus, Massa Medicata Fermentata, Rehmanniae Radix, Poria, Ostreae Concha, Alumen. 3. Mutual restraint compatibility with: Realgar, Aconiti Radix, Aconiti Lateralis Preparata Radix) 4. Mutual detoxication compatibility with: 桑汁(Juice of Mori Folium), 桑根汁(Juice of Morus Cortex), 大蒜(Allii Bulbus), 薺苨(Remotiflori Radix), 桂汁(Juice of Cinnamomi Cortex).

• Journal of Acupuncture Research
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• 제26권1호
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• pp.91-98
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• 2009

목적 : 상지, 상백피, 상엽은 모두 뽕나무에서 유래한 것으로 한의학에서 수천 년 동안 사용되어왔다. 최근 이들의 미백효능이 발견되면서 더욱 주목을 받고 있다. 피부의 멜라닌 색소 침착은 자선에 대한 정상적인 방어기전이다. 그러나 비정상적인 색소침착은 심각한 미용적 문제를 가져온다. 최근 약침이 피부 미백에 이용되고 있다. 또한 발효와 열처리는 미백화장료 가공의 최신 경향이다. 이 연구에서는 상지, 상백피, 상엽 약침액이 발효와 열처리 후에 피부 미백에 어떠한 영향을 미치는지 알아보고자 한다. 방법 : 상지, 상백피, 상엽을 각각 4개의 그룹으로 나누었다. (1) 비발효, 비열처리, (2) 비발효, 열처리, (3) 발효, 비열처리, (4) 발효, 열처리한 그룹들에 타이로시나제 활성 및 도파 산화 활성, 그리고 멜라닌 함량을 측정하여 비교하였다. 결과 : 타이로시나제 활성 및 도파 산화 활성, 그리고 멜라닌 함량에 있어서, 발효, 열처리가 대체로 효과가 있는 것으로 나타났다. 특히 멜라닌 함량에 있어서 발효, 열처리한 군이 대조군에 비해 유의성 있는 감소를 보였다. 결론 : 주근깨, 흑색종, 간반(肝斑) 등 비정상적인 색소 침착 질환을 치료하기 위한 상지, 상백피, 상엽 약침액 제조에 있어, 발효 및 열처리 방식을 적용하면 보다 나은 미백효능을 발휘할 수 있을 것으로 생각된다.

• 한방안이비인후피부과학회지
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• 제15권2호
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• pp.271-288
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• 2002

Authors investigated the pathogenesis and treatment of dennatosurgical diseases in the ImJeungJiNamUiAn(臨證指南醫案). 1. The symptoms and diseases of dermatosurgery were as follows; 1) BanSaJinRa(반사진라) : eczema, atopic dermatitis, seborrheic dermatitis, psoriasis, lichen planus, pityriasis rosea, hives, dermographism, angioedema, cholinergic urticaria, urticaria pigmentosa, acne, milium, syringoma, keratosis pilaris, discoid lupus erythematosus, hypersensitivity vasculitis, drug eruption, polymorphic light eruption, rheumatic fever, juvenile rheumatoid arthritis(Still's disease), acute febrile neutrophilic dermatosis(Sweet's syndrome), Paget's disease, folliculitis, viral exanthems, molluscum contagiosum, tinea, tinea versicolor, lymphoma, lymphadenitis, lymphangitis, granuloma annulare, cherry angioma 2) ChangYang(瘡瘍) : acute stage eczema, seborrheic dermatitis, stasis ulcer, intertrigo, xerosis, psoriasis, lichen planus, ichthyosis, pityriasis rosea, rosacea, acne, keratosis pilaris, dyshidrosis, dermatitis herpetiformis, herpes gestationis, bullae in diabetics, pemphigus, lupus erythematosus, fixed drug eruption, erythema multiforme, toxic epidermal necrolysis, toxic shock syndrome, staphylococcal scaled skin syndrome, scarlet fever, folliculitis, impetigo, pyoderma gangrenosum, tinea, candidiasis, scabies, herpes simplex, herpes zoster, chicken pox, Kawasaki syndrome, lipoma, goiter, thyroid nodule, thyroiditis, hyperthyroidism, thyroid cancer, benign breast disorder, breast carcinoma, hepatic abscess, appendicitis, hemorrhoid 3) Yeok(疫) : scarlet fever, chicken pox, measles, rubella, exanthem subitum, erythema infectiosum, Epstein-Barr virus infection, cytomegalovirus infection, hand-foot-mouth disease, Kawasaki disease 4) Han(汗) : hyperhidrosis 2. The pathogenesis and treatment of dermatosurgery were as follows; 1) When the pathogenesis of BalSa(발사), BalJin(發疹), BalLa(발라) and HangJong(項腫) are wind-warm(風溫), exogenous cold with endogenous heat(外寒內熱), wind-damp(風濕), the treatment of evaporation(解表) with Menthae Herba(薄荷), Arctii Fructus(牛蒡子), Forsythiae Fructus(連翹) Mori Cortex(桑白皮), Fritillariae Cirrhosae Bulbus(貝母), Armeniaoae Amarum Semen(杏仁), Ephedrae Herba(麻黃), Cinnamomi Ramulus(桂枝), Curcumae Longae Rhizoma(薑黃), etc can be applied. 2) When the pathogenesis of BuYang(부양), ChangI(瘡痍) and ChangJilGaeSeon(瘡疾疥癬) are wind-heat(風熱), blood fever with wind transformation(血熱風動), wind-damp(風濕), the treatment of wind-dispelling(疏風) with Arctii Fructus(牛蒡子), Schizonepetae Herba(荊芥), Ledebouriellae Radix(防風), Dictamni Radicis Cortex(白鮮皮), Bombyx Batrytioatus(白？?), etc can be applied. 3) When the pathogenesis of SaHuHaeSu(사후해수), SaJin(사진), BalJin(發疹), EunJin(은진) and BuYang(부양) are wind-heat(風熱), exogenous cold with endogenous heat(外寒內熱), exogenous warm pathogen with endogenous damp-heat(溫邪外感 濕熱內蘊), warm pathogen's penetration(溫邪內陷), insidious heat's penetration of pericardium(伏熱入包絡), the treatment of Ki-cooling(淸氣) with TongSeongHwan(通聖丸), Praeparatum(豆？), Phyllostachys Folium(竹葉), Mori Cortex(桑白皮), Tetrapanacis Medulla(通草), etc can be applied. 4) When the pathogenesis of JeokBan(적반), BalLa(발라), GuChang(久瘡), GyeolHaek(結核), DamHaek(痰核), Yeong(？), YuJu(流注), Breast Diseases(乳房疾患) and DoHan(盜汗) are stagnancy's injury of Ki and blood(鬱傷氣血), gallbladder fire with stomach damp(膽火胃濕), deficiency of Yin in stomach with Kwolum's check (胃陰虛 厥陰乘), heat's penetration of blood collaterals with disharmony of liver and stomach(熱入血絡 肝胃不和), insidious pathogen in Kwolum(邪伏厥陰), the treatment of mediation(和解) with Prunellae Spica(夏枯草), Chrysanthemi Flos(菊花), Mori Folium (桑葉), Bupleuri Radix(柴胡), Coptidis Rhizoma(黃連), Scutellariae Radix(黃芩), Gardeniae Fructus(梔子), Cyperi Rhizoma(香附子), Toosendan Fructus(川？子), Curcumae Radix(鬱金), Moutan Cortex(牧丹皮), Paeoniae Radix Rubra(赤芍藥), Unoariae Ramulus Et Uncus(釣鉤藤), Cinnamorni Ramulus(桂枝), Paeoniae Radix Alba(白芍藥), Polygoni Multiflori Radix (何首烏), Cannabis Fructus (胡麻子), Ostreae Concha(牡蠣), Zizyphi Spinosae Semen(酸棗仁), Pinelliae Rhizoma(半夏), Poria(백복령). etc can be applied. 5) When the pathogenesis of BanJin(반진), BalLa(발라), ChangI(瘡痍), NamgChang(膿瘡). ChangJilGaeSeon(瘡疾疥癬), ChangYang(瘡瘍), SeoYang(署瘍), NongYang(膿瘍) and GweYang(潰瘍) are wind-damp(風濕), summer heat-damp(暑濕), damp-warm(濕溫), downward flow of damp-heat(濕熱下垂), damp-heat with phlegm transformation(濕熱化痰), gallbladder fire with stomach damp(膽火胃濕), overdose of cold herbs(寒凉之樂 過服), the treatment of damp-resolving(化濕) with Pinelliae Rhizoma(半夏), armeniacae Amarum Semen(杏仁), Arecae Pericarpium(大腹皮), Poria(백복령), Coicis Semen(薏苡仁), Talcum(滑石), Glauberitum(寒水石), Dioscoreae Tokoro Rhizoma(？？), Alismatis Rhizoma(澤瀉), Phellodendri Cortex(黃柏), Phaseoli Radiati Semen(？豆皮), Bombycis Excrementum(?沙), Bombyx Batryticatus(白？?), Stephaniae Tetrandrae Radix(防己), etc can be applied. 6) When the pathogenesis of ChangPo(瘡泡), hepatic abscess(肝癰) and appendicitis(腸癰) are food poisoning(食物中毒), Ki obstruction & blood stasis in the interior(기비혈어재과), damp-heat stagnation with six Bu organs suspension(濕熱結聚 六腑不通), the treatment of purgation(通下) with DaeHwangMokDanPiTang(大黃牧丹皮湯), Manitis Squama(穿山甲), Curcumae Radix(鬱金), Curcumae Longae Rhizoma(薑黃), Tetrapanacis Medulla(通草), etc can be applied. 7) When the pathogenesis of JeokBan(적반), BanJin(반진), EunJin(은진). BuYang(부양), ChangI(瘡痍), ChangPo(瘡泡), GuChang(久瘡), NongYang(膿瘍), GweYang(潰瘍), Jeong(정), Jeol(癤), YeokRyeo(疫？) and YeokRyeolpDan(疫？入？) are wind-heat stagnation(風熱久未解), blood fever in Yangmyong(陽明血熱), blood fever with transformation(血熱風動), heat's penetration of blood collaterals(熱入血絡). fever in blood(血分有熱), insidious heat in triple energizer(三焦伏熱), pathogen's penetration of pericardium(心包受邪), deficiency of Yong(營虛), epidemic pathogen(感受穢濁), the treatment of Yong & blood-cooling(淸營凉血) with SeoGakJiHwangTang(犀角地黃湯), Scrophulariae Radix(玄參), Salviae Miltiorrhizae Radix(丹參), Angelicae Gigantis Radix(當歸), Polygoni Multiflori Radix(何首烏), Cannabis Fructus(胡麻子), Biotae Semen(柏子仁), Liriopis Tuber(麥門冬), Phaseoli Semen(赤豆皮), Forsythiae Fructus(連翹), SaJin(사진), YangDok(瘍毒) and YeokRyeoIpDan(역려입단) are insidious heat's penetration of pericardium(伏熱入包絡), damp-warm's penetration of blood collaterals(濕溫入血絡), epidemic pathogen's penetration of pericardium(심포감수역려), the treatment of resuscitation(開竅) with JiBoDan(至寶丹), UHwangHwan(牛黃丸), Forsythiae Fructus(連翹), Curcumae Radix(鬱金), Tetrapanacis Medulla(通草), Acori Graminei Rhizoma(石菖蒲), etc can be applied. 9) When the pathogenesis of SaHuSinTong(사후신통), SaHuYeolBuJi(사후열부지), ChangI(瘡痍), YangSon(瘍損) and DoHan(盜汗) are deficiency of Yin in Yangmyong stomach(陽明胃陰虛), deficiency of Yin(陰虛), the treatment of Yin-replenishing(滋陰) with MaekMunDongTang(麥門冬湯), GyeongOkGo(瓊玉膏), Schizandrae Fructus(五味子), Adenophorae Radix(沙參), Lycii Radicis Cortex (地骨皮), Polygonati Odorati Rhizoma(玉竹), Dindrobii Herba(石斛), Paeoniae Radix Alba(白芍藥), Ligustri Lucidi Fructus (女貞子), etc can be applied. 10) When the pathogenesis of RuYang(漏瘍) is endogenous wind in Yang collaterals(陽絡內風), the treatment of endogenous wind-calming(息風) with Mume Fructus(烏梅), Paeoniae Radix Alba (白芍藥), etc be applied. 11) When the pathogenesis of GuChang(久瘡), GweYang(潰瘍), RuYang(漏瘍), ChiChang(痔瘡), JaHan(自汗) and OSimHan(五心汗) are consumption of stomach(胃損), consumption of Ki & blood(氣血耗盡), overexertion of heart vitality(勞傷心神), deficiency of Yong(營虛), deficiency of Wi(衛虛), deficiency of Yang(陽虛), the treatment of Yang-restoring & exhaustion-arresting(回陽固脫) with RijungTang(理中湯), jinMuTang(眞武湯), SaengMaekSaGunjaTang(生脈四君子湯), Astragali Radix (황기), Ledebouriellae Radix(防風), Cinnamomi Ramulus(桂枝), Angelicae Gigantis Radix(當歸), Ostreae Concha(牡蠣), Zanthoxyli Fructus(川椒), Cuscutae Semen(兎絲子), etc can be applied.

• 대한한방소아과학회지
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• 제17권1호
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• pp.53-69
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• 2003

This study was designed to investigate prescriptions and herbs for treating coughing In childhood(小兒咳嗽) with oriental medical literature. The results were summarized as follows; 1. 182 prescriptions and 212 herbs were used for healing coughing in childhood. 2. There are 12 cases which has the same name of prescription with different elements. Applied prescriptions can be recorded according to the number as follows. They are Samsoeum(蔘蘇飮) and Jeonglyukhwan, Ageosan(阿膠散), Gamgiltang(甘桔湯), Keumbichosan(金沸草散), Sabaeksan(瀉白散), Gilgyungtang(桔梗湯), Mahwangtang(麻黃湯), Baekbyungja(白餠子), Baeksanghwan(白祥丸). Boeunhwan, Whagaesan(華盖散) respectively. 3. Applied herbs can be recorded according to the number as follows. They are (杏仁), Radix glycyrrhizae(甘草), Rhizoma zingiberis(生薑), Rhizoma pinelliae(半夏), Radix ginseng(人蔘) Platycodi radix(桔梗), Mori cortex(桑白皮).

• International Journal of Oral Biology
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• 제32권2호
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• pp.75-78
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• 2007

The periodontal diseases and dental caries are major infectious diseases in oral cavity. Many of the preventive and therapeutic dental products contain the antimicrobial and anti-inflammatory components. But some of these antimicrobial have weak points such as coloration, burning sensation and insolubility in water. We have screened the therapeutic herbal extracts of the Plant Extract Bank for the antimicrobial activity on the major dental pathogens by growth inhibition assay. For the Porphyromonas gingivalis, 8 herbal extracts had an antimicrobial activity, 11 herbal extracts for the Prevotella intermedia, 43 herbal extracts for the Haemophilus actinomycetemcomitans and 61 herbal extracts for the Streptococcus mutans. Among these extracts, 6 herbal extracts had an antimicrobial activity for more than 3 species of dental pathogens. These extracts are Araliae Cordatae Radix, Crassirhizomae Rhizoma, Mori Radicis Cortex, Psoraleae Semen, Pini Ramulus and Sieges- beckiae Herba. All of effective extracts were CA group, ethanol extracts. Among these 6 herbal extracts, only Crassirhizomae is known to have a antibacterial effects. Therefore these herbal extracts have a possibility to be a candidate for a major antibacterial components in dental products.