Publications by authors named "Young-Soo Kim"

This study focuses on the elucidation of the structure and antiviral properties of six nitrogen-containing compounds including amino acid derivates (1 and 2) and heterocyclic compounds (3-6) isolated from the fruiting bodies of Sarcodon imbricatus, particularly Compound 2, an (S)-2-(hydroxyimino)-3-methylpentanoic acid ethyl ester. Their antiviral effects were tested against influenza A virus (IAV) in A549 cells. Particularly, Compound 2 exhibited significant antiviral activity in post-treatment assays, reducing viral protein expression and inhibiting viral replication with an IC of 14.

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Background And Purpose: People living with epilepsy (PLWE) may wish to discontinue antiseizure medications (ASMs) after long-term remission. However, fear of relapse may lead to continued ASM use. Previous studies have focused on seizure relapse in PLWE who discontinued ASMs after long-term seizure remission (PLWE off ASM), with limited data on those who continued ASMs (PLWE on ASM).

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Article Synopsis
  • German neurologist Alois Alzheimer first described Alzheimer's disease (AD) over a century ago, linking cognitive impairments to abnormal protein clusters like amyloid plaques and tau tangles in the brain.
  • Aging disrupts the balance of amyloid-β (Aβ) levels, leading to its accumulation, which is associated with neurodegeneration; despite skepticism about targeting Aβ for treatment, recent FDA approvals of anti-Aβ drugs have sparked new interest in this approach.
  • Our research has identified a small molecule, EPPS, which effectively reduces aggregated Aβ in the brain and improves behavior in AD models by breaking down toxic aggregates into harmless monomers, potentially offering a more accessible treatment option compared to antibody therapies.
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Comprehending early amyloidogenesis is essential for the development of effective therapeutic strategies. In tauopathies like Alzheimer's disease (AD), the abnormal accumulation of tau protein is initiated by pathological tau seeds. Mounting evidence implies that the microtubule binding domain, consisting of three to four repeats, plays a pivotal role in this process, yet the exact region driving the formation of pathogenic species needs to be further scrutinized.

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Aggregation of misfolded amyloid-β (Aβ) and hyperphosphorylated tau proteins to plaques and tangles, respectively, is the major drug target of Alzheimer's disease (AD), as the former is an onset biomarker and the latter is associated with neurodegeneration. Thus, we report a small molecule drug candidate, DN5355, with a dual-targeting function toward aggregates of both Aβ and tau. DN5355 was selected through a series of four screenings assessing 52 chemicals for their functions to inhibit and reverse the aggregation of Aβ and tau by utilizing thioflavin T.

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  • Scientists studied a plant leaf extract, known for helping with different health issues in Asia, especially for reducing itchiness.
  • They found that the extract and its key ingredient, myricitrin, can stop the production of certain chemicals linked to itching in brain cells called microglia and astrocytes.
  • This research suggests that these natural ingredients could be used to help relieve itching and treat skin problems.
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  • * The study explored ginsenoside Rg5, which activates the Nrf2 pathway, and found that it inhibited HSV-1 replication by reducing ROS and inflammatory responses in infected host cells.
  • * These results indicate that ginsenoside Rg5 could be a potential new treatment for HSV-1 infections and related neuroinflammation.
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  • The accumulation of amyloid-β (Aβ) is linked to Alzheimer's disease, and recent studies suggest that targeting Aβ may be a viable treatment strategy.
  • Researchers developed 51 new compounds aimed at enhancing the clearance of Aβ aggregates, with one promising candidate, YIAD-0336, showing potential through various functional assays.
  • Upon testing in mice, YIAD-0336 demonstrated the ability to improve memory and significantly reduce Aβ plaques, indicating its potential as a treatment for cognitive decline associated with Alzheimer’s disease.
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Objectives: To evaluate the cost-effectiveness of the 20-valent pneumococcal conjugate vaccine (PCV20) compared to 13-valent pneumococcal conjugate vaccine (PCV13) for the pediatric population in Korea, where the four-dose vaccine coverage rate is over 97%.

Methods: We constructed a Markov model to calculate the cost and quality-adjusted life-years (QALYs) over 10 years. The health states were susceptible states; disease states, which included invasive pneumococcal diseases such as meningitis, bacteremia, pneumonia, and acute otitis media; and death attributable to pneumococcal disease.

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Antiretroviral therapy-naive people living with HIV possess less fat than people without HIV. Previously, we found that HIV-1 transactivator of transcription (TAT) decreases fat in ob/ob mice. The TAT38 (a.

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Background: Peucedanum japonicum Thunb. (PJ) is a vegetable widely consumed in East Asia and is known to have anticancer and anti-inflammatory effects. However, the effect of PJ on muscle atrophy remains elusive.

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  • Urban Particulate Matter (UPM) contributes to skin aging and inflammation by activating specific skin cell receptors, particularly the TRPV1 channel.
  • Oleic acid, a type of unsaturated fatty acid, demonstrates protective effects against UPM-induced skin damage by inhibiting key signaling pathways like AhR and TRPV1.
  • The study suggests that oleic acid helps reduce inflammation and promotes cell growth in skin cells exposed to UPM by lowering the activity of harmful molecules and proteins linked to damage and aging.
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Chronic gut inflammation promotes the development of metabolic diseases such as obesity. There is growing evidence which suggests that dysbiosis in gut microbiota and metabolites disrupt the integrity of the intestinal barrier and significantly impact the level of inflammation in various tissues, including the liver and adipose tissues. Moreover, dietary sources are connected to the development of leaky gut syndrome through their interaction with the gut microbiota.

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Amyloid-β (Aβ) oligomers are implicated in the onset of Alzheimer's disease (AD). Herein, quinoline-derived half-curcumin-dioxaborine (Q-OB) fluorescent probe was designed for detecting Aβ oligomers by finely tailoring the hydrophobicity of the biannulate donor motifs in donor-π-acceptor structure. Q-OB shows a great sensing potency in dynamically monitoring oligomerization of Aβ during amyloid fibrillogenesis in vitro.

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  • Scientists have found new cancer treatment drugs called immune checkpoint inhibitors that help improve survival rates by blocking certain proteins, but they can also have side effects because they are large.
  • This study is looking for smaller, natural medicine options to block these proteins without causing as many side effects, specifically using a plant called evening primrose.
  • The results showed that a compound from evening primrose can help battle cancer by boosting the immune system's T cells, making them better at fighting tumors and reducing their growth.
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Black ginseng (BG) is processed ginseng traditionally made in Korea via the steaming and drying of ginseng root through three or more cycles, leading to changes in its appearance due to the Maillard reaction on its surface, resulting in a dark coloration. In this study, we explored markers for differentiating processed ginseng by analyzing the chemical characteristics of BG. We elucidated a new method for the structural identification of ginsenoside metabolites and described the features of processed ginseng using UPLC-QTOF-MS in the positive ion mode.

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The common human coronavirus (HCoV) exhibits mild disease with upper respiratory infection and common cold symptoms. HCoV-OC43, one of the HCoVs, can be used to screen drug candidates against SARS-CoV-2. We determined the antiviral effects of FDA/EMA-approved drug anastrozole (AZ) on two human coronaviruses, HCoV-OC43 and HCoV-229E, using MRC-5 cells in vitro.

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Herpes simplex virus 1 (HSV-1) is double-stranded DNA virus that belongs to the Orthoherpesviridae family. It causes serious neurological diseases of the central nervous system, such as encephalitis. The current U.

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Toxic industrial wastes and microbial pathogens in water pose a continuous threat to aquatic life as well as alarming situations for humans. Developing advanced materials with an environmentally friendly approach is always preferable for heterogeneous visible light photocatalysis. As a green reducing tool, LBG-s-AgNPs@ g-CN NS hybrid nanostructures were anchored onto graphitic carbon nitride (g-CN) using an environmentally friendly approach of anchoring/decorating AgNPs onto g-CN.

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Patulin (PAT) is a natural mycotoxin found in decaying pome fruits. Although some toxicological studies have been conducted on PAT, recent research has highlighted its anticancer and antifungal effects. However, studies have yet to examine the effects and molecular mechanisms of PAT in other metabolic diseases.

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Chloroplast genomes are valuable for inferring evolutionary relationships. We report the complete chloroplast genomes of 36 Corydalis spp. and one Fumaria species.

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Influenza is an acute respiratory disorder caused by the influenza virus and is associated with prolonged hospitalization and high mortality rates in older individuals and chronically ill patients. Vaccination is the most effective preventive strategy for ameliorating seasonal influenza. However, the vaccine is not fully effective in cases of antigenic mismatch with the viral strains circulating in the community.

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Purpose: Numerous inventories to identify felt stigma (FS) in people living with epilepsy (PLWE) have been developed. Past studies have mainly focused on the relationship between FS scores and clinical factors, making it challenging to delineate FS proportions and compare FS between groups. We aimed to integrate FS proportions in PLWE and compare them by continent.

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Abnormal assembly of amyloid β (Aβ) in the brain is implicated in Alzheimer's disease (AD) and is associated with cognitive impairments. Since Aβ accumulation occurs in advance of the onset of clinical symptoms, identifying preventable drug candidates regulating Aβ accumulation is regarded as a promising approach in AD therapeutic. Herein, we synthesized eight Yonsei Institute of pharmaceutical sciences Alzheimer's Drug (YIAD) compounds based on 5-benzyl-6-phenylbenzo[4,5]imidazo[1,2-]pyrrolo[2,1-]pyrazine structures.

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