• Title/Summary/Keyword: Molecular medicine

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Molecular Pathogenesis of Vibrio vulnificus

  • Gulig Paul A.;Bourdage Keri L.;Starks Angela M.
    • Journal of Microbiology
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    • 제43권spc1호
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    • pp.118-131
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    • 2005
  • Vibrio vulnificus is an opportunistic pathogen of humans that has the capability of causing rare, yet devastating disease. The bacteria are naturally present in estuarine environments and frequently contaminate seafoods. Within days of consuming uncooked, contaminated seafood, predisposed individuals can succumb to sepsis. Additionally, in otherwise healthy people, V. vulnificus causes wound infection that can require amputation or lead to sepsis. These diseases share the characteristics that the bacteria multiply extremely rapidly in host tissues and cause extensive damage. Despite the analysis of virulence for over 20 years using a combination of animal and cell culture models, surprisingly little is known about the mechanisms by which V. vulnificus causes disease. This is in part because of differences observed using animal models that involve infection with bacteria versus injection of toxins. However, the increasing use of genetic analysis coupled with detailed animal models is revealing new insight into the pathogenesis of V. vulnificus disease.

A pyrazolopyrimidine-based radioligand for imaging of the translocator protein

  • Kwon, Young-Do;Kim, Hee-Kwon
    • 대한방사성의약품학회지
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    • 제2권2호
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    • pp.69-72
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    • 2016
  • Since the translocator protein (TSPO) is involved in neurodegeneration diseases, many scientists' interest has been focused on the development of a ligand targeting TSPO. A novel compound based on pyrazolo[1,5 -a] pyrimidine structure, DPA-714, has been studied and considered as a TSPO ligand with high affinity. In this highlight review, several researches for the novel radioligand for the translocator protein are illustrated.

Disruption of ATP binding destabilizes NPM/B23 and inhibits anti-apoptotic function

  • Choi, Joung-Woo;Lee, Sang-Bae;Ahn, Jee-Yin;Lee, Kyung-Hoon
    • BMB Reports
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    • 제41권12호
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    • pp.840-845
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    • 2008
  • Nucleophosmin/B23, a major nucleolar phosphoprotein, is overexpressed in actively proliferating cells. In this study, we demonstrate that B23 exclusively localizes in the nucleolus, whereas ATP depletion results in the redistribution of B23 throughout the whole nucleus and destabilizes B23 via caspase-3 mediated cleavage. Interestingly, ATP binding precedes PI(3,4,5)P3 binding at lysine 263 and ATP binding mutants fail to restore the anti-apoptotic functions of B23 in PC12 cells. Thus, the ATP-B23 interaction is required for the stability of the B23 protein and regulates cell survival, confining B23 within the nucleolus in PC12 cells.

Molecular Docking Studies of p21-Activated Kinase-1 (PAK1) Inhibitors

  • Balupuri, Anand;Balasubramanian, Pavithra K.;Cho, Seung Joo
    • 통합자연과학논문집
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    • 제9권3호
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    • pp.161-165
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    • 2016
  • The p21-activated kinase-1 (PAK1) has emerged as a potential target for anticancer therapy. It is overexpressed in ovarian, breast and bladder cancers. This suggests that PAK1 may contribute to tumorigenesis. 4-azaindole derivatives are reported as potent PAK1 inhibitors. The present work deals with the molecular docking studies of 4-azaindoles with PAK1. Probable binding mode of these inhibitors has been identified by molecular modeling. Docking results indicated that hydrogen bonding interactions with Glu345 and Leu347 are responsible for governing inhibitor potency of the compounds. Additionally, Val284, Val328, Met344 and Leu396 were found to be accountable for hydrophobic interactions inside the active site of PAK1.

A novel quinoline derivative with high affinity for the translocator protein

  • Kwon, Young-Do;Kim, Hee-Kwon
    • 대한방사성의약품학회지
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    • 제1권2호
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    • pp.95-97
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    • 2015
  • The translocator protein (TSPO) is one of the important targets for Positron Emission Tomography (PET) imaging because it is associated with brain cancer, stroke, and neurodegeneration. Recently, a novel quinoline compound with high affinity agent for the translocator protein has been developed. In this highlight review, major studies for the quinoline compound are described.

A novel tricyclic derivative for PET imaging of the translocator protein

  • Kwon, Young-Do;Kim, Hee-Kwon
    • 대한방사성의약품학회지
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    • 제2권1호
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    • pp.37-42
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    • 2016
  • The translocator protein (TSPO) has attracted scientist's attention for Positron Emission Tomography (PET) imaging due to correlation with brain cancer, stroke, and neurodegeneration. Recently, GE-180, a novel tricyclic derivative has been developed as a new high affinity agent for the TSPO and evaluated to confirm a possibility for the TSPO ligand. In this highlight review, several studies for the novel TSPO radiotracer are described.

In vivo Trafficking of Liposomes Containing Boron Compounds for Boron Neutron Capture Therapy (BNCT)

  • Huu Bao Nguyen;Jeongsoo Yoo
    • 대한방사성의약품학회지
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    • 제9권1호
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    • pp.43-48
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    • 2023
  • For over 50 years, boron neutron capture therapy (BNCT) has been steadily developed for treating various cancers. This is a non-invasive, selective, and targeted radiotherapy wherein boron-rich molecules accumulate at the tumor site. Liposomal vesicles have become a popular and effective drug delivery system for BNCT, with strategies including surface decoration, bilayer integration, and hydrophilic core encapsulation. This review highlights the state-of-the-art uses of liposomes in BNCT and elucidates a new perspective where BNCT can be used with radiotracer guidance in all-in-one delivery systems.

Novel mild fluorination method using light

  • Tien Tan Bui;Hee-Kwon Kim
    • 대한방사성의약품학회지
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    • 제6권2호
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    • pp.131-138
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    • 2020
  • Fluorine compounds have attracted interest of scientists for immense applications in medicinal chemistry and pharmaceuticals. Recently, photoredox catalysts, both organic-based and metal-based compounds, have been employed in organic synthetic methodology to achieve desirable products due to facile operation and mild reaction condition. Various protocols to prepare fluorination adducts in the presence of photoredox catalysts have been developed from several starting materials with formation of radical scaffolds. In this review, we describe recent advances in the fluorination using light.

Clinical features and molecular mechanism of muscle wasting in end stage renal disease

  • Sang Hyeon Ju;Hyon-Seung Yi
    • BMB Reports
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    • 제56권8호
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    • pp.426-438
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    • 2023
  • Muscle wasting in end-stage renal disease (ESRD) is an escalating issue due to the increasing global prevalence of ESRD and its significant clinical impact, including a close association with elevated mortality risk. The phenomenon of muscle wasting in ESRD, which exceeds the rate of muscle loss observed in the normal aging process, arises from multifactorial processes. This review paper aims to provide a comprehensive understanding of muscle wasting in ESRD, covering its epidemiology, underlying molecular mechanisms, and current and emerging therapeutic interventions. It delves into the assessment techniques for muscle mass and function, before exploring the intricate metabolic and molecular pathways that lead to muscle atrophy in ESRD patients. We further discuss various strategies to mitigate muscle wasting, including nutritional, pharmacological, exercise, and physical modalities intervention. This review seeks to provide a solid foundation for future research in this area, fostering a deeper understanding of muscle wasting in ESRD, and paving the way for the development of novel strategies to improve patient outcomes.

First report of splenic myelolipoma in a Schnauzer in Colombia: a case report

  • Valentina Rueda-Garcia;Nicolas Carrillo-Godoy;Carlos Alberto Bonilla-Gutierrez;Alejandra Valdivieso-Valencia;Iang Schroniltgen Rondon-Barragan
    • 대한수의학회지
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    • 제62권4호
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    • pp.28.1-28.4
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    • 2022
  • Splenic myelolipoma is a rare tumor in dogs with an unclear origin. A male 13-year-old Schnauzer dog was presented because of a bump on the left side of the abdomen. Clinical examination and abdominal ultrasound revealed a mass in the spleen. A total splenectomy was carried out, and histopathology revealed a splenic myelolipoma. Before surgery, the patient showed high serum alanine aminotransferase levels, which returned to normal eight months after the resection. Unfortunately, the postoperative follow-up showed increased serum cholesterol and triglyceride levels, suggesting liver compromise. This is the first report of a splenic myelolipoma in Colombia.