• 제목/요약/키워드: Reactivation

검색결과 236건 처리시간 0.031초

Herpes Zoster and Postherpetic Neuralgia: Practical Consideration for Prevention and Treatment

  • Jeon, Young Hoon
    • The Korean Journal of Pain
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    • 제28권3호
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    • pp.177-184
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    • 2015
  • Herpes zoster (HZ) is a transient disease caused by the reactivation of latent varicella zoster virus (VZV) in spinal or cranial sensory ganglia. It is characterized by a painful rash in the affected dermatome. Postherpetic neuralgia (PHN) is the most troublesome side effect associated with HZ. However, PHN is often resistant to current analgesic treatments such as antidepressants, anticonvulsants, opioids, and topical agents including lidocaine patches and capsaicin cream and can persist for several years. The risk factors for reactivation of HZ include advanced age and compromised cell-mediated immunity (CMI). Early diagnosis and treatment with antiviral agents plus intervention treatments is believed to shorten the duration and severity of acute HZ and reduce the risk of PHN. Prophylactic vaccination against VZV can be the best option to prevent or reduce the incidence of HZ and PHN. This review focuses on the pathophysiology, clinical features, and management of HZ and PHN, as well as the efficacy of the HZ vaccine.

In vitro Screening of Oxime Reactivators on the Model of Paraoxon-inhibited Acetylcholinesterase-SAR Study

  • Holas, Ondrej;Musilek, Kamil;Pohanka, Miroslav;Kuca, Kamil;Opletalova, Veronika;Jung, Young-Sik
    • Bulletin of the Korean Chemical Society
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    • 제31권6호
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    • pp.1609-1614
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    • 2010
  • Acetylcholinesterase reactivators are crucial antidotes for the treatment of organophosphate intoxication. Standard in vitro test was chosen using a rat brain homogenate as the source of AChE. Screening of reactivation potency was performed with two concentration of reactivator (1000 ${\mu}M$ and 10 ${\mu}M$). Results were compared to established reactivators pralidoxime, methoxime, HI-6, trimedoxime and obidoxime. More than 30 novel reactivators performed equal or better reactivation ability of POX-inhibited AChE compared to currently used reactivators. The structure-activity relationship for reactivators of paraoxon-inhibited AChE was developed.

Mandibular osteonecrosis following herpes zoster infection in the mandibular branch of the trigeminal nerve: a case report and literature review

  • Song, Jae-Min;Seo, Jeong-Seok;Lee, Jae-Yeol
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제41권6호
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    • pp.357-360
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    • 2015
  • Herpes zoster virus (HZV) infections are caused by reactivation of the varicella zoster virus. Reactivation symptoms commonly affect the thoracolumbar trunk, and rarely affect the mandibular branches of the trigeminal nerve. When the mandibular branches are involved, lesions appear proximal to the innervation area. This condition may be associated with exfoliation of the teeth and osteonecrosis of the jawbone. We report a case of mandibular osteomyelitis after herpes zoster infection and we present a review of the literature on mandibular-branch involvement of HZV-related osteonecrosis.

한계농지개발사업의 개발전망과 활성화 방안 (An Activation Proposal for the Marginal Farmland Redevelopment Project in Korea)

  • 한경수;김영주;최수명
    • 농촌계획
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    • 제12권4호
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    • pp.33-42
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    • 2006
  • Recently, Korean government has been initiating various schemes for reactivation of the marginal farmland use. However, although about ten years have passed from the introduction of the marginal farmland redevelopment projects in 1995, there have been very few research works on their systematic and objective appraisal. Therefore, this study checked the statutory concept and development schemes of the marginal farmland, firstly. Ant through case studies on 5 completed project sites and questionnaire/interview surveys on local government officers/private developers, problems and suggestions on project implementation were analysed. Finally, in consideration with analysed results and suggestions together, tentative project directions and reaction schemes on marginal farmland development were proposed.

르 꼬르뷔제 후기 건축의 '탈은폐적 이미지 표출' (Image Expression of Disclosure in Le Corbusier's late Architecture)

  • 이승헌
    • 대한건축학회연합논문집
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    • 제9권3호
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    • pp.1-8
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    • 2007
  • Heidegger's speculation on "Disclosure" makes it possible to know on image expression fundamentally. "Disclosure" means that the 'earth' and the 'world' are not fixed into one, but harmonize dynamically with each other under continuous mutual tension and mutual support. When they are well-weaved with each other, the two ways are collectively defined as "disclosure Image". In regard to the technique, the study analyzed 'allegory' and 'reactivation'. The former refers to showing image potentially, while the latter means embodying and revealing image apparently. Le Corbusier's late Architecture provides a simultaneous reactivation of various images through continuous cross-weaving rather than being inclined to either the earth or the world.

Herpes Simplex Virus Type 1 마우스 뇌염모델에서의 조직내 바이러스 증식 및 재활성에 미치는 Acyclovir의 약효 (Efficacy of Acyclovir on Virus Replication in Infected Tissues and Virus Reactivation from Explanted Tissues in Mouse Encephalitis Model of Herpes Simplex Virus Type 1)

  • 이종교;김지현;배판기;피미경;김해수
    • 대한바이러스학회지
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    • 제29권3호
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    • pp.165-174
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    • 1999
  • To investigate viral pathogenesis and in vivo efficacy of acyclovir (ACV) in mouse HSV-1 encephalitis models, female BALB/c mice aged 5 weeks were inoculated with strain F either intranasally (IN) or intracerebrally (IC). ACV-treatment by intraperitomeal injection with 0, 5, 10 and 25 mg/kg b.i.d. for 6 days was commenced 1 h after infection. Body weight and signs of clinical disease were noted daily up to 2 weeks. $ED_{50}$ of ACV in IN infection was <5 mg/kg and 14.1 mg/kg in IC infection. Tissues of central nervous system were collected from 2 mice per group everyday up to 5 day p.i. and the virus titers were measured. In IN infection model, high titers in eyes and trigeminal nerves were observed. ACV-treatment showed significant reduction of the titers in all the isolated. In IC infection model, cerebrum, cerebellum and brain stem showed high virus titers. ACV-treatment showed less significant reduction of virus titers than that in IN infection model. Reactivation of explanted trigeminal nerves from mice 30 day p.i. was monitored. In all of ACV treated mice reactivation was observed, i.e. even the highest dose of ACV did not inhibit the establishment of viral latency.

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Biphasic activation of extracellular signal-regulated kinase (ERK) 1/2 in epidermal growth factor (EGF)-stimulated SW480 colorectal cancer cells

  • Joo, Donghyun;Woo, Jong Soo;Cho, Kwang-Hyun;Han, Seung Hyun;Min, Tae Sun;Yang, Deok-Chun;Yun, Cheol-Heui
    • BMB Reports
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    • 제49권4호
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    • pp.220-225
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    • 2016
  • Cancer cells have different characteristics due to the genetic differences where these unique features may strongly influence the effectiveness of therapeutic interventions. Here, we show that the spontaneous reactivation of extracellular signalregulated kinase (ERK), distinct from conventional ERK activation, represents a potent mechanism for cancer cell survival. We studied ERK1/2 activation in vitro in SW480 colorectal cancer cells. Although ERK signaling tends to be transiently activated, we observed the delayed reactivation of ERK1/2 in epidermal growth factor (EGF)-stimulated SW480 cells. This effect was observed even after EGF withdrawal. While phosphorylated ERK1/2 translocated into the nucleus following its primary activation, it remained in the cytoplasm during late-phase activation. The inhibition of primary ERK1/2 activation or protein trafficking, blocked reactivation and concurrently increased caspase 3 activity. Our results suggest that the biphasic activation of ERK1/2 plays a role in cancer cell survival; thus, regulation of ERK1/2 activation may improve the efficacy of cancer therapies that target ERK signaling.