Publications by authors named "Sang C Park"

Background: Recent studies suggest a critical role for vitamin D in respiratory diseases, including asthma and allergic rhinitis. However, the relationship between vitamin D deficiency and chronic rhinitis, particularly in middle- and older-aged populations, remains underexplored. This study aimed to investigate the association between vitamin D deficiency and chronic rhinitis in middle- and older-aged adults while controlling for lifestyle and physical status factors.

View Article and Find Full Text PDF
Article Synopsis
  • * Research reveals that a specific type of macrophage, CD39CD9 interstitial macrophages (IMs), is inhibited by IL-23 but increases when treated with an IL-23 inhibitor, showing potential for managing NDA.
  • * CD39CD9 IMs help reduce neutrophil extracellular trap formation and suppress inflammatory responses, indicating their significance as a therapeutic target for treating IL-23-Th17-mediated asthma.
View Article and Find Full Text PDF

Background/aim: This study compared the initial outcomes of gas-insufflation one-step single-port transaxillary (GOSTA) robotic thyroidectomy with traditional open thyroidectomy for thyroid cancer at a single institution.

Patients And Methods: A retrospective analysis was conducted on 77 patients who underwent thyroidectomy for differentiated thyroid cancer from January to June 2024. Exclusion criteria included benign nodules, Graves' disease, and previous thyroid surgeries.

View Article and Find Full Text PDF

Background: Walking is widely recognized as a prevalent form of daily exercise worldwide. However, fewer studies have explored the health outcomes of different intensities of walking exercise for older adults. Thus, the study aimed to investigate the effects of walking at different exercise intensities on body composition, emotions, cognition, and physical function among older adults.

View Article and Find Full Text PDF

Background/aim: This study aimed to identify the risk factors associated with non-sentinel lymph node (non-SLN) metastasis in case of hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative breast cancer with cN0 on preoperative exam, where the sentinel lymph node (SLN) is positive.

Patients And Methods: We conducted a retrospective review of medical records from the Chonnam National University Hwasun Hospital, spanning from January 2013 to January 2020, focusing on patients with HR+, HER2- breast cancer. Specifically, we collected the clinical and pathological data for those patients who underwent axillary lymph node dissection (ALND) due to positive SLN.

View Article and Find Full Text PDF

species include Meyer, L., , , , and , which contain bioactive components (BCs) such as ginsenosides and polysaccharides. Recently, growing evidence has revealed the pharmacological effects of species and their BCs on allergic airway diseases (AADs), including allergic asthma (AA) and allergic rhinitis (AR).

View Article and Find Full Text PDF

Ultrasonography (US)-guided fine-needle aspiration cytology (FNAC) is the primary modality for evaluating thyroid nodules. However, in cases of atypia of undetermined significance (AUS) or follicular lesion of undetermined significance (FLUS), supplemental tests are necessary for a definitive diagnosis. Accordingly, we aimed to develop a non-invasive quantification software using the heterogeneity scores of thyroid nodules.

View Article and Find Full Text PDF

Phosphatase and tensin homolog (PTEN) is a tumor suppressor due to its ability to regulate cell survival, growth, and proliferation by downregulating the PI3K/AKT signaling pathway. In addition, PTEN plays an essential role in other physiological events associated with cell growth demands, such as ischemia-reperfusion, nerve injury, and immune responsiveness. Therefore, recently, PTEN inhibition has emerged as a potential therapeutic intervention in these situations.

View Article and Find Full Text PDF
Article Synopsis
  • Addressing immunological issues caused by aging is crucial for maintaining health, as the immune system is key in managing infections and helping tissue repair.
  • Our study shows that using a flagellin-containing fusion protein to stimulate toll-like receptor 5 (TLR5) can improve the lifespan and overall health of mice, marked by less hair loss, better bone density, and improved cognitive function.
  • This approach also strengthens gut health by enhancing TLR5 expression in specific immune cells and increasing the secretion of interleukin-22 (IL-22), indicating a promising way to promote healthy aging.
View Article and Find Full Text PDF

Biological responsiveness refers to the capacity of living organisms to adapt to changes in both their internal and external environments through physiological and behavioral mechanisms. One of the prominent aspects of aging is the decline in this responsiveness, which can lead to a deterioration in the processes required for maintenance, survival, and growth. The vital link between physiological responsiveness and the essential life processes lies within the signaling systems.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates subjective health among centenarians and near-centenarians in rural South Korea, focusing on the factors influencing their perception of health.
  • Out of 101 participants, 59.6% rated their health as subjectively good, with depressive mood identified as the only significant negative factor affecting their health perception.
  • The results highlight the critical role of mental health in older adults, suggesting that managing depressive symptoms is crucial for improving subjective health in those aged 95 and above.
View Article and Find Full Text PDF

Peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) is a master regulator of mitochondrial biogenesis. Reduced PGC-1α abundance is linked to skeletal muscle weakness in aging or pathological conditions, such as neurodegenerative diseases and diabetes; thus, elevating PGC-1α abundance might be a promising strategy to treat muscle aging. Here, we performed high-throughput screening and identified a natural compound, farnesol, as a potent inducer of PGC-1α.

View Article and Find Full Text PDF

While the world is rapidly transforming into a superaging society, pharmaceutical approaches to treat sarcopenia have hitherto not been successful due to their insufficient efficacy and failure to specifically target skeletal muscle cells (skMCs). Although electrical stimulation (ES) is emerging as an alternative intervention, its efficacy toward treating sarcopenia remains unexplored. In this study, we demonstrate a silver electroceutical technology with the potential to treat sarcopenia.

View Article and Find Full Text PDF
Article Synopsis
  • Healing is really important as we get older, and having enough energy helps our skin heal better.
  • A protein called ANT2 is needed to bring energy into cells and helps with healing wounds, especially in older skin.
  • By increasing ANT2 levels, researchers found that they could speed up healing and reduce inflammation in skin cells, linking energy processes to better skin health.
View Article and Find Full Text PDF

Mitochondria are one of the organelles undergoing rapid alteration during the senescence process. Senescent cells show an increase in mitochondrial size, which is attributed to the accumulation of defective mitochondria, which causes mitochondrial oxidative stress. Defective mitochondria are also targets of mitochondrial oxidative stress, and the vicious cycle between defective mitochondria and mitochondrial oxidative stress contributes to the onset and development of aging and age-related diseases.

View Article and Find Full Text PDF

Allergic rhinitis is the most common chronic disease worldwide. Various upper airway symptoms lower quality of life, and due to the recurrent symptoms, multiple treatments are usually attempted rather than one definitive treatment. There are alternatives to medical (medication-based) and non-medical treatments.

View Article and Find Full Text PDF

Background: Calprotectin is an antimicrobial peptide primarily secreted by neutrophils. Furthermore, calprotectin secretion increases in patients with chronic rhinosinusitis (CRS) with polyps (CRSwNP) and positively correlates with neutrophil markers. However, CRSwNP is known to be associated with type 2 inflammation related to tissue eosinophilia.

View Article and Find Full Text PDF

Brain aging is a complex biological process that is affected by both genetic background and environment. The transcriptomic analysis of aged human and rodent brains has been applied to identify age-associated molecular and cellular processes for which intervention could possibly restore declining brain functions induced by aging. However, whether these age-associated genetic alterations are indeed involved in the healthy aging of the brain remains unclear.

View Article and Find Full Text PDF

The prevalence of allergic rhinitis (AR) and the socioeconomic burden associated with the medical cost and quality of life (QOL) of AR have progressively increased. Therefore, practical guidelines for the appropriate management of AR need to be developed based on scientific evidence while considering the real-world environment, values, and preferences of patients and physicians. The Korean Academy of Asthma, Allergy and Clinical Immunology revised clinical guidelines of AR to address key clinical questions of the management of AR.

View Article and Find Full Text PDF

Alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) are becoming increasingly prevalent worldwide. Despite the different etiologies, their spectra and histological feature are similar, from simple steatosis to more advanced stages such as steatohepatitis, fibrosis, cirrhosis, and hepatocellular carcinoma. Studies including peroxiredoxin knockout models revealed that oxidative stress is crucial in these diseases, which present as consequences of redox imbalance.

View Article and Find Full Text PDF

Senescence is a phenomenon defined by alterations in cellular organelles and is the primary cause of aging and aging-related diseases. Recent studies have shown that oncogene-induced senescence is driven by activation of serine/threonine protein kinases (AKT1, AKT2 and AKT3). In this study, we evaluated twelve AKT inhibitors and revealed GDC0068 as a potential agent to ameliorate senescence.

View Article and Find Full Text PDF

Importance: Turbinate surgery is an effective treatment for allergic rhinitis (AR) refractory to medical treatment. However, the long-term outcomes of turbinate surgery are still unclear and have not yet been confirmed by a meta-analysis and systematic review of the literature.

Objective: To investigate the long-term outcomes and safety of turbinate surgery in AR by performing a meta-analysis.

View Article and Find Full Text PDF

is a beneficial fungus of microbial fermented teas such as China's Fuzhuan brick tea and Pu-erh tea, and is commonly called golden flower fungus (GFF) because its cleistothecium has a yellow millet or sand grain shape. Since natural materials fermented with GFF exhibit various physiological activities, a new active cosmeceutical ingredient was developed by solid-state fermentation of ginseng, a famous active material for healthy skin, with GFF. The extract of solid-state fermented ginseng with GFF (GFFG) exhibited potent anti-aging efficacy on the skin such as the increase of hyaluronic acid synthesis, aquaporin expression, and mRNA level of filaggrin in HaCaT keratinocyte.

View Article and Find Full Text PDF

Parkinson's disease (PD) is the second most common neurodegenerative disease, after Alzheimer's disease, and becomes increasingly prevalent with age. α-Synuclein (α-syn) forms the major filamentous component of Lewy bodies, which are pathological hallmarks of α-synucleinopathies such as PD. We evaluated the neuroprotective effects of MT101-5, a standardized herbal formula that consists of an ethanolic extract of Genkwae Flos, Clematidis Radix, and Gastrodiae Rhizoma, against α-synuclein-induced cytotoxicity in vivo.

View Article and Find Full Text PDF

Selective removal of senescent cells, or senolytic therapy, has been proposed to be a potent strategy for overcoming age-related diseases and even for reversing aging. We found that nintedanib, a tyrosine kinase inhibitor, selectively induced the death of primary human dermal fibroblasts undergoing RS. Similar to ABT263, a well-known senolytic agent, nintedanib triggered intrinsic apoptosis in senescent cells.

View Article and Find Full Text PDF