Publications by authors named "Chai O"

Background: Endometrial cancer (EC) is a malignant tumor of the endometrial epithelium, with endometrial adenocarcinoma being the most common type. It has a good overall prognosis, but recurrence and metastasis are often associated with poorer outcomes. LLGL2 is closely linked to tumorigenesis; however, its in endometrial carcinoma is unknown.

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Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related deaths worldwide, with more than 800,000 deaths each year, and its 5-year survival rate is less than 12%. The role of the HN1 gene in HCC has remained elusive, despite its upregulation in various cancer types. In our investigation, we identified HN1's heightened expression in HCC tissues, which, upon overexpression, fosters cell proliferation, migration, and invasion, unveiling its role as an oncogene in HCC.

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Background: Epilepsy in dogs and humans is associated with blood-brain barrier (BBB) dysfunction (BBBD), which may involve dysfunction of tight junction (TJ) proteins, matrix metalloproteases, and astrocytes. Imaging techniques to assess BBB integrity, to identify potential treatment strategies, have not yet been evaluated in veterinary medicine.

Hypothesis: Some dogs with idiopathic epilepsy (IE) will exhibit BBBD.

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Background: Branched-chain amino acids (BCAAs), including leucine, isoleucine, and valine, are essential amino acids for mammals. Maternal BCAAs during pregnancy have been associated with newborn development. Meanwhile, BCAAs have been tightly linked with insulin resistance and diabetes in recent years.

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The Brust-Schiffrin (BS) method for gold nanoparticle (Au NP) synthesis is celebrated for its ability to produce highly monodisperse NPs from toluene-water solutions, in contrast to aqueous methods, such as the Turkevich method. Despite the method's success, the actual formation mechanisms remain largely unknown due to difficulty in studying the intermediates with species-differentiating techniques such as mass spectrometry (MS) or nuclear magnetic resonance (NMR). The issue lies in the use of solvents poorly compatible with these techniques and the difficulty in differentiating useful intermediate species from side products and impurities in such one-pot reactions.

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Particulate matter (PM) significantly contributes to the global health crisis of respiratory diseases. It is known to induce and exacerbate conditions such as asthma and respiratory infections. Long exposure to PM can increase the risk of combined allergic rhinitis and asthma syndrome (CARAS).

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Metal nanoclusters (MNCs) can be synthesized with atomically precise structures and molecule formulae due to the rapid development of nanocluster science in recent decades. The ultrasmall size range (normally < 2 nm) endows MNCs with plenty of molecular-like properties, among which photoluminescent properties have aroused extensive attention. Tracing the research and development processes of luminescent nanoclusters, various photoluminescent analysis and characterization methods play a significant role in elucidating luminescent mechanism and analyzing luminescent properties.

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Background: Allergic rhinitis (AR) is the most prevalent form of atopic disease. Undaria pinnatifida has potent antioxidative, antidiabetic, and anti-inflammatory properties.

Aims: We investigated the immunomodulatory effect of Undaria pinnatifida extract (UPE) on allergic inflammation in an AR mouse model.

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has traditionally been used as an herbal medicine due to its characteristics that protect against inflammation, hypertension, and mutagenesis. However, the effect of (CSE) on allergic rhinitis (AR) and its underlying mechanisms have yet to be thoroughly investigated. The current study explored the likely effect of CSE on AR in an ovalbumin (OVA)-induced AR mouse model.

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Asthma is a chronic obstructive airway condition and one of the most common non-communicable illnesses worldwide. Tectorigenin (Tec) is an isoflavonoid found in plants that possesses significant antioxidative and anti-inflammatory abilities. Nevertheless, the antioxidative properties of Tec have not yet been documented in allergic asthma.

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Histone deacetylase (HDAC) inhibitors diminish carcinogenesis, metastasis, and cancer cell proliferation by inducing death in cancer cells. Tissue regeneration and organ development are highly dependent on the Hippo signaling pathway. Targeting the dysregulated hippo pathway is an excellent approach for cancer treatment.

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Hippo/YAP signaling hinders cancer progression. Inactivation of this pathway contributes to the development of esophageal cancer by activation of Akt. However, the possible interaction between Akt and Hippo/YAP pathways in esophageal cancer progression is unclear.

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Article Synopsis
  • Asian knotweed's root extract (FJE) was tested for its effects on airway inflammation linked to combined allergic rhinitis and asthma (CARAS) in a mouse model.
  • Mice treated with FJE showed a decrease in allergic responses, including lower levels of IgE and inflammatory cytokines, while enhancing IgG2a levels.
  • FJE also improved histopathological conditions in nasal and lung tissues and influenced the IL-33/TSLP/NF-kB signaling pathway, suggesting its potential as a therapeutic for CARAS.
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Context: Saikosaponin D (SSD) is a commonly prescribed agent against inflammatory diseases in Asian countries. However, the anti-allergic inflammatory effect of SSD in allergic rhinitis (AR) model is not well known.

Objective: We investigated the anti-allergic and anti-inflammatory effects of SSD on the ovalbumin (OVA)-induced AR model.

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Asthma is a chronic airway inflammatory disease listed as one of the top global health problems. BÂN is a well-known medicinal plant in Vietnam with its anti-oxidant, anti-microbial, anti-inflammatory potential, and gastro-protective properties. However, there is no study about extract (PVE) on asthma disease.

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Combined allergic rhinitis and asthma syndrome (CARAS) causes chronic respiratory inflammation in allergic individuals. Long-term exposure to particulate matter 2.5 (PM2.

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Background: Particulate matter (PM) is a major component of air pollution from emissions from anthropogenic and natural sources and is a serious problem worldwide due to its adverse effects on human health. Increased particulate air pollution increases respiratory disease-related mortality and morbidity. However, the impact of PM with an aerodynamic diameter of ≤ 2.

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It was elucidated that bromodomain-containing protein 4 (BRD4) has involvement with diabetic complication. However, the role and molecular mechanism of BRD4 in gestational diabetes mellitus (GDM) are still unclear. In this study, the mRNA and protein contents of BRD4 in placenta tissues of GDM patients and high glucose (HG)-induced HTR8/SVneo cells were detected by qRT-PCR and western blot assay.

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Background: Blood-brain barrier (BBB) permeability can be assessed quantitatively using advanced imaging analysis.

Hypothesis/objectives: Quantification and characterization of blood-brain barrier dysfunction (BBBD) patterns in dogs with brain tumors can provide useful information about tumor biology and assist in distinguishing between gliomas and meningiomas.

Animals: Seventy-eight hospitalized dogs with brain tumors and 12 control dogs without brain tumors.

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Gastric cancer (GC) is one of the most lethal cancers in South Korea, and it is a cancer of concern worldwide. 5-fluorouracil (5-Fu) is commonly used as the first-line therapy for advanced GC; however, its side effects often limit the dosage range and impair patients' quality of life. Due to the limitations of current chemotherapy, new anticancer therapies are urgently needed.

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Article Synopsis
  • A new term, "combined allergic rhinitis and asthma syndrome (CARAS)," describes patients who suffer from both allergic rhinitis and asthma due to an imbalance of TH1/TH2 immune responses and mast cell degranulation.
  • A study tested the effects of an herbal extract, AGE, on CARAS in a mouse model, finding that AGE reduced symptoms like nasal rubbing and sneezing, while also lowering IgE and histamine levels.
  • AGE treatment improved the histological changes in nasal and lung tissues, shifted the immune response towards TH1 favorability by increasing IL-12 and T-bet levels, and significantly suppressed TH2 cytokines, suggesting AGE's potential as a therapeutic option for CARAS
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Objective: To evaluate the efficiency and safety of a doramectin-based treatment protocol in dogs affected by intraspinal spirocercosis (Spirocerca lupi).

Animals: Client-owned dogs that were admitted to a veterinary hospital during 2021 to 2022 with acute onset of neurological signs and diagnosed with intraspinal spirocercosis. All dogs underwent complete neurological evaluation, CSF analysis, PCR confirmation of CNS S lupi infection, and follow-up evaluation of at least 6 months.

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Colorectal cancer (CRC) is one of the deadliest malignant tumors worldwide and its prevalence is increasing in South Korea. The efficacy of combined treatment with natural product‑derived and chemotherapy agents including curcumin combined with 5‑fluorouracil, resveratrol combined with cisplatin and epigallocatechin‑3‑gallate (EGCG) combined with cisplatin in preventing cancer progression and killing cancer cells has emerged. The Akt and Hippo signaling pathways serve a key role in colorectal tumor growth; however, the exact role of the crosstalk between Akt and Hippo signaling pathways in CRC remains poorly elucidated.

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Transient hypophosphatemia is often detected in humans following generalized tonic-clonic seizures (GTCS), and serum phosphorus concentration (sPi) serves as a marker to differentiate GTCS from syncope. The objective of this retrospective study was to assess the usefulness of hypophosphatemia as a diagnostic marker for GTCS in dogs. Eighty-seven and 26 client-owned dogs with GTCS or syncope, respectively, were enrolled.

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