• Title/Summary/Keyword: stimulating effect

Search Result 845, Processing Time 0.025 seconds

Immuno-modulator effect of Cefodizime in IL-6

  • Joo, Seong-Soo;Oh, Won-Sik;Lee, Do-Ik
    • Proceedings of the PSK Conference
    • /
    • 2002.10a
    • /
    • pp.305.2-306
    • /
    • 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)

  • PDF

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

  • Choi, Ji Eun
    • Medical Lasers
    • /
    • v.10 no.4
    • /
    • pp.195-200
    • /
    • 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.

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

  • Lee, Yu-Il;Shin, Jin-Ok;Kim, Mi-Young;Chun, Sang-Young
    • Clinical and Experimental Reproductive Medicine
    • /
    • v.33 no.1
    • /
    • pp.15-23
    • /
    • 2006
  • Objective: Pituitary adenylate cyclase-activating polypeptide (PACAP), a novel hypothalamic neuropeptide, has been suggested to play a role in ovarian folliculogenesis. The present study evaluated the effect of PACAP on the growth of preantral follicles. Methods: Preantral follicles were mechanically isolated from ovaries of 21-day-old rats and cultured in groups for 3 days in serum-free medium in the absence or presence of PACAP-38 ($10^{-6}M$). Results: Treatment with PACAP-38 resulted in an increase in follicle diameter by 75% whereas treatment with follicle stimulating hormone (FSH) increased follicle diameter by 65%. PACAP-38 treatment enhanced the granulosa cell proliferation as measured by thymidine incorporation analysis. Furthermore, the production of progesterone by cultured granulosa cells and GFSHR-17 cell line was stimulated by PACAP-38. Interestingly, PACAP enhanced FSH action on stimulation of SF-1 and aromatase gene expression. Conclusion: The present results demonstrate that PACAP stimulated preantral follicle growth by potentiating proliferation and by stimulating steroidogenesis.

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
    • /
    • v.23 no.4
    • /
    • pp.430-436
    • /
    • 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.

The Study of Literature Review on Mechanism of Bee Venom Therapy for Musculo-skeletal Disorder (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))

  • Kim, Sung-Soo;Chung, Won-Suk
    • The Journal of Korea CHUNA Manual Medicine
    • /
    • v.3 no.1
    • /
    • pp.111-123
    • /
    • 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.

  • PDF

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

  • 고석태;문영희;김성오
    • YAKHAK HOEJI
    • /
    • v.17 no.2
    • /
    • pp.103-110
    • /
    • 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.

  • PDF

Ginseng and obesity

  • Li, Zhipeng;Ji, Geun Eog
    • Journal of Ginseng Research
    • /
    • v.42 no.1
    • /
    • pp.1-8
    • /
    • 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.

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

  • Ryu Hui-Yeong;Gang Hyeong-Uk
    • Journal of Oriental Neuropsychiatry
    • /
    • v.1 no.1
    • /
    • pp.39-48
    • /
    • 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.

  • PDF

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
    • /
    • v.43 no.2
    • /
    • pp.103-123
    • /
    • 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.