• 제목/요약/키워드: stimulating effect

검색결과 845건 처리시간 0.033초

Immuno-modulator effect of Cefodizime in IL-6

  • Joo, Seong-Soo;Oh, Won-Sik;Lee, Do-Ik
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.305.2-306
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    • 2002
  • In recent studies on cefodizime, it may potentially have the capability of stimulating chemotactic activity of neutrophils and monocytes as well as the strong immuno-modulator. In turn, infection can result in a drastic change of mediators. which lead to initiate an immune response in an indirect way. With this backgrounds, we have studied to see if cefodizime can be a potential substance to induce an immunological function in dendritic cells and peritoneal macrophages. (omitted)

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Proposed Mechanisms of Photobiomodulation (PBM) Mediated via the Stimulation of Mitochondrial Activity in Peripheral Nerve Injuries

  • Choi, Ji Eun
    • Medical Lasers
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    • 제10권4호
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    • pp.195-200
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    • 2021
  • Evidence shows that nerve injury triggers mitochondrial dysfunction during axonal degeneration. Mitochondria play a pivotal role in axonal regeneration. Therefore, normalizing mitochondrial energy metabolism may represent an elective therapeutic strategy contributing to nerve recovery after damage. Photobiomodulation (PBM) induces a photobiological effect by stimulating mitochondrial activity. An increasing body of evidence demonstrates that PBM improves ATP generation and modulates many of the secondary mediators [reactive oxygen species (ROS), nitric oxide (NO), cyclic adenosine monophosphate (cAMP), and calcium ions (Ca2+)], which in turn activate multiple pathways involved in axonal regeneration.

난포자극호르몬과 Pituitary Adenylate Cyclase-activating Polypeptide에 의한 난소의 난포성장 (Control Mechanisms of Ovarian Follicle Development by Follicle Stimulating Hormone and Pituitary Adenylate Cyclase-activating Polypeptide)

  • 이여일;신진옥;김미영;전상영
    • Clinical and Experimental Reproductive Medicine
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    • 제33권1호
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    • pp.15-23
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    • 2006
  • 목 적: 본 연구는 흰쥐 난소를 실험모델로 하여 미성숙 전동 난포의 성장에 대한 pituitary adenylate cyclase-activating polypeptide (PACAP)의 영향을 얄아보고자 하였다. 연구방법: 미성숙 전동 난포를 생후 21일된 흰쥐로부터 분리하여 PACAP을 첨가하거나 첨가하지 않은 무혈청 배양액에서 3일 동안 배양하고, 푸로게스테론 호르몬의 생성, 난포의 성장, 과립막세포의 증식 및 유전자의 동태 등을 관찰하였다. 증식의 정도는 thymidine incorporation 방법으로 검색하고 유전자의 변동은 Northern 분석을 이용하였다. 결 과: PACAP으로 처리한 군은 난포의 직경이 75% 증가한 반면 난포자극호르몬인 FSH로 처리한 군은 65% 증가하였고, PACAP 처리는 과립막 세포의 증식을 강화시켰다. FSH와 PACAP 공히 배양된 흰쥐 난포의 과립막 세포와 FSH에 반응하는 세포주인 GFSHR-17에서의 프로게스테론 생성을 촉진시켰고, PACAP이 FSH의 작용을 증진시켜 SF-1과 아로마타제 유전자 발현을 촉진시켰다. 결 론: 본 연구는 PACAP이 과립막증식과 스테로이드합성을 통하여 전동 난포의 성장을 촉진함을 시사하였고, 또한, SF-1, 아로마타제 등에 대한 FSH의 작용을 도와주는 역할을 PACAP이 담당하므로 PACAP은 초기 난포성장에 필요한 난소국소인자임을 유추할 수 있었다.

Validation of Methods for Isolation and Culture of Alpaca Melanocytes: A Novel Tool for In vitro Studies of Mechanisms Controlling Coat Color

  • Bai, Rui;Sen, Aritro;Yu, Zhihui;Yang, Gang;Wang, Haidong;Fan, Ruiwen;Lv, Lihua;Lee, Kyung-Bon;Smith, George W;Dong, Changsheng
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권4호
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    • pp.430-436
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    • 2010
  • The objective of the present studies was to develop and validate a system for isolation, purification and extended culture of pigment-producing cells in alpaca skin (melanocytes) responsible for coat color and to determine the effect of alpha melanocyte stimulating hormone treatment on mRNA expression for the melanocortin 1 receptor, a key gene involved in coat color regulation in other species. Skin punch biopsies were harvested from the dorsal region of 1-3 yr old alpacas and three different enzyme digestion methods were evaluated for effects on yield of viable cells and attachment in vitro. Greatest cell yields and attachment were obtained following dispersion with dispase II relative to trypsin and trypsin-EDTA treatment. Culture of cells in medium supplemented with basic fibroblast growth factor, bovine pituitary extract, hydrocortisone, insulin, 12-O-tetradecanolphorbol-13-acetate and cholera toxin yielded highly pure populations of melanocytes by passage 3 as confirmed by detection of tyrosinase activity and immunocytochemical localization of melanocyte markers including tyrosinase, S-100 and micropthalmia-associated transcription factor. Abundance of mRNA for tyrosinase, a key enzyme in melanocyte pigment production, was maintained through 10 passages showing preservation of melanocyte phenotypic characteristics with extended culture. To determine hormonal responsiveness of cultured melanocytes and investigate regulation of melanocortin 1 receptor expression, cultured melanocytes were treated with increasing concentrations of ${\alpha}$-melanocyte stimulating hormone. Treatment with ${\alpha}$-melanocyte stimulating hormone increased melanocortin receptor 1 mRNA in a dose dependent fashion. The results demonstrated culture of pure populations of alpaca melanocytes to 10 passages and illustrate the potential utility of such cells for studies of intrinsic and extrinsic regulation of genes controlling pigmentation and coat color in fiber-producing species.

봉독요법(蜂毒療法)의 근골격계질환(筋骨格界疾患) 치료기전(治療機轉)에 대한 문헌적(文獻的) 고찰(考察) (The Study of Literature Review on Mechanism of Bee Venom Therapy for Musculo-skeletal Disorder)

  • 김성수;정원석
    • 대한추나의학회지
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    • 제3권1호
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    • pp.111-123
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    • 2002
  • Objectives : There have been many studies of the effect of Bee Venom therapy about arthritis, but no one study was reported about its whole functional mechanism to musculo-skeletal system. This study was designed to investigate the effect, Indication, and side effect of Bee Venom therapy on musculo-skeletal disease by literature review of articles. Results : The effects of Bee Venom therapy to musculo-skeletal system are divided to Anti_inflammatory effect and Anti-nociceptive effect. Anti_inflammatory effect is achieved through competitive chemotaxis, immuno-regulation, increasing of cortisol secretion by stimulating hypothalamus-pituitary gland-adrenal cortex axis. Anti-nociceptive effect is achieved by Anti-inflammatory mechanism and it works similar to anti-nociceptive effect of the acupuncture acting on central and peripheral nociceptive transduction system. The Bee Venom therapy could cause severe side effect, for example, hypersensitivity and anaphylaxis, injury to central nerve system and cardiovascular system, peripheral blood system, and renal dysfunction. Conclusions : With its Anti-inflammatory and Anti-nociceptive mechanism, Bee Venom therapy is considered that has good effects to autoimmune disease, chronic inflammation of various musculo-skeletal disease and various pain syndrome. But the clinician must be careful for its side effects.

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창출이 가토의 혈압에 미치는 영향 (Effect of atractylis on the blood pressure of the rabbit)

  • 고석태;문영희;김성오
    • 약학회지
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    • 제17권2호
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    • pp.103-110
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    • 1973
  • In this study the effect of alcohol extract of atractlis (AAE) on the blood pressure of the rabbit was investigated. The results of the experiment are as follows. AAE elicited hypotension with doses ranging from 3 to 30 mg/kg, i.v., exhibiting a linear dose-relationship. This effect of AAE was abolished by atropine and potentiated by physostigmine, while not affected by diphenhydramine, hexamethonium, propranolol and cyproheptadine. AAE did not influence the pressor responses to norepinephrine and the depressor to isoproterenol. The above results indicate that AAE produced the hypotension by stimulating the parasympathetic nervous system related to acetylcholine.

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Ginseng and obesity

  • Li, Zhipeng;Ji, Geun Eog
    • Journal of Ginseng Research
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    • 제42권1호
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    • pp.1-8
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    • 2018
  • Although ginseng has been shown to have an antiobesity effect, antiobesity-related mechanisms are complex and have not been completely elucidated. In the present study, we evaluated ginseng's effects on food intake, the digestion, and absorption systems, as well as liver, adipose tissue, and skeletal muscle in order to identify the mechanisms involved. A review of previous in vitro and in vivo studies revealed that ginseng and ginsenosides can increase energy expenditure by stimulating the adenosine monophosphate-activated kinase pathway and can reduce energy intake. Moreover, in high fat dietinduced obese and diabetic individuals, ginseng has shown a two-way adjustment effect on adipogenesis. Nevertheless, most of the previous studies into antiobesity effects of ginseng have been animal based, and there is a paucity of evidence supporting the suggestion that ginseng can exert an antiobesity effect in humans.

백김환(白金丸)의 효능(效能)에 관(關)한 실험적(實驗的) 연구(硏究) (Experimental Studies on the Efficacy of Baikgeumhoan in the Mouse)

  • 류희영;강형욱
    • 동의신경정신과학회지
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    • 제1권1호
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    • pp.39-48
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    • 1990
  • Baikgeumhoan is well known for cure of epilepsy. In order to investigate the anticonvulsion, analgesic action and sedative effect of Baikgeumhoan pharmacological studies have been carried out with Baikgeumhoan. Baikgeumhoan is composed of two drugs; Rhizoma curcumae and Alumen. The results were as follows ; 1. Anticonvulsion effect against the convulsion induced by picrotoxin in Mice was significantly recognized. 2. Analgesic action estimated by the acetic acid stimulating meehod was shown in Mice. 3. Sedative effect was shown in Mice. Considering the above experimental results, it is suggested that the effects of Baikgeumhoan based on the Oriental medicinal references were similary consistant with actual experimental results.

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The Impact of COVID-19 Regional Cash Subsidies on the Sales of Local Businesses in South Korea

  • KIM, MEEROO;OH, YOON HAE
    • KDI Journal of Economic Policy
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    • 제43권2호
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    • pp.103-123
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    • 2021
  • This paper examines the impact of the regional cash subsidies which were granted in some districts in addition to the national universal stimulus payment in South Korea related to the COVID-19 pandemic. We evaluate the effects of the cash distribution per resident on aggregate credit and debit card sales and sales by industry using the difference-in-difference method. The increment in card spending due to the cash subsidy is about 1.58%p in total, and this effect is concentrated within a single month. The consumption stimulating effect is prominent among (semi)-durable goods that do not require close interactions between customers and sellers. In contrast, the effect is relatively small in the high-contact face-to-face service sectors and restaurants, areas the COVID-19 pandemic hit directly. On the other hand, some service sectors where customers could wear face masks, such as education and fitness, experienced a substantial sales boost due to the cash subsidy.