Publications by authors named "Ji-Hye Ryu"

Background: Canine atopic dermatitis (cAD) varies in prevalence and lesion distribution across breeds. In contrast to Western countries, many Asian countries favour small-to-medium dog breeds. However, previous studies have focused primarily on medium-to-large dog breeds.

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This study was conducted to develop a grape product that can facilitate fruit intake for elderly people with chewing difficulties. In addition, the possibility of field application for future prototype production was investigated by comparing laboratory-scale (lab-scale) and pilot-scale production. The stages (stage 1: able to eat with teeth, stage 2: able to eat with gums, stage 3: able to eat with tongue) of the products were determined according to the Korean Industrial Standards for Seniors Friendly Foods (KS H 4897), and the physicochemical composition was measured according to the general test method of the Food Code.

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Stroke, a leading cause of death and disability, lacks effective treatments. Post-stroke secondary damage worsens the brain microenvironment, further exacerbating brain injury. Microglia's role in responding to stroke-induced damage in peri-infarct regions is crucial.

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Aurea Helianthus (AH), also known as wild confederate rose or golden sunflower, is a curative herb. It has been used as a medicinal material in China due to its anti-inflammatory, immune regulatory, and anti-oxidant activities. However, its melanogenic effect on skin has not been sufficiently investigated.

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Objectives: This study aimed to identify the effects of anti-smoking public service announcements on the attitudes of Korean college students toward smoking.

Methods: This study involved students via convenience sampling from seven universities who were randomly assigned to four groups. All groups completed a preliminary questionnaire, before being shown a public service announcement twice, and then completed a post viewing questionnaire.

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Objectives: This study was to evaluate the performance of the newly developed information system (IS) implemented on July 1, 2014 at three public hospitals in Korea.

Methods: User satisfaction scores of twelve key performance indicators of six IS success factors based on the DeLone and McLean IS Success Model were utilized to evaluate IS performance before and after the newly developed system was introduced.

Results: All scores increased after system introduction except for the completeness of medical records and impact on the clinical environment.

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Hypoxia-inducible factor α proteins (HIF-αs) are regulated oxygen dependently and transactivate numerous genes essential for cellular adaptation to hypoxia. NEDD8, a member of the ubiquitin-like family, covalently binds to its substrate proteins, and thus, regulates their stabilities and functions. In the present study, we examined the possibility that the HIF signaling is regulated by the neddylation.

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Benign prostatic hyperplasia (BPH) is a disease that impairs the well-being of many aged men. To alleviate BPH symptoms or to find a cure for this disease, key molecules should be identified that control prostate cell proliferation. Recently, HIF-1alpha has attracted attention in this context, because it is highly expressed in hyperplasic prostates and prevents prostate cell death.

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Spermidine/spermine N-1-acetyl-transferase (SSAT) is a catabolic enzyme that participates in polyamine metabolism. SSAT has been reported to be induced in some organs subjected to ischemia-reperfusion, but its induction mechanism has not been clarified, and little is known about SSAT regulation by ischemia per se. We induced regional ischemia of rat heart by coronary ligation and found that SSAT expression increased in ischemic myocardium.

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Article Synopsis
  • The prostate has a lot of zinc, which is important for male reproduction, but too much zinc can be harmful to cells.
  • A study found that a protein called HIF-1alpha helps prostate cells survive even when there's a lot of zinc around.
  • When HIF-1alpha was reduced in the cells, many more of them died, showing that HIF-1alpha protects prostate cells from high zinc levels.
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Hypoxia-inducible factor-1alpha (HIF-1alpha) seems central to tumor growth and progression because it up-regulates genes essential for angiogenesis and the hypoxic adaptation of cancer cells, which is why HIF-1alpha inhibition is viewed as a cancer therapy strategy. Paradoxically, HIF-1alpha also leads to cell cycle arrest or the apoptosis of cancer cells. Thus, the possibility cannot be ruled out that HIF-1alpha inhibitors unlock cell cycle arrest under hypoxic conditions and prevent cell death, which would limit the anticancer effect of HIF-1alpha inhibitors.

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Amphotericin B (AmB) is widely used for treating severe systemic fungal infections. However, long-term AmB treatment is invariably associated with adverse effects such as anemia. The erythropoietin (EPO) suppression by AmB has been proposed to contribute to the development of anemia.

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Spermidine/spermine N(1)-acetyltransferase (SSAT) is the key enzyme with regard to the maintenance of intracellular polyamine levels. It is an inducible enzyme, which may participate in adaptive responses to environmental stress. However, little is known regarding its responses to oxygen or nutrient deficiencies.

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