Kyungsu Kim

BACKGROUND: Chronic rhinosinusitis (CRS) is one of the most common inflammatory diseases with multiple etiologies. Despite its high prevalence, risk factors influencing its prevalence have not been thoroughly revealed. Therefore, we investigated the prevalence and risk factors of CRS in Korea. METHODS: The 4098 subjects that participated in the Korea National Health and Nutrition Examination Survey were included in the study. Risk factors were categorized into sociodemographic and personal medic

EGb 761, extracted from Ginkgo biloba leaves, has been proven to induce caspase-3-dependent apoptosis in oral cavity cancer cells. Since EGb 761 is a composition of various components, it is important to identify which components are responsible for its anticancer effects to reduce the total dosage and to avoid toxicity. Therefore, the study aimed to determine the effective compounds of EGb 761 that induce apoptosis in oral cavity cancer cells and to identify whether caspase-3 was involved in ap

Botulinum toxin type A (BTA) is known to inhibit the release of acetylcholine from cholinergic nerve endings. Owing to the characteristics of BTA, we thought that it could be used for the treatment of intrinsic rhinitis acting as an anticholinergic drug. In a double-blind placebo-controlled study four units of BTA were injected into the middle turbinate (two units) and inferior turbinate (two units) in each nasal cavity. Rhinorrhoea, nasal obstruction, and sneezing were recorded in a symptom dia

Little is known about the regulatory effects of cytokines on various nasal secretions in normal human nasal epithelial cells. The aim of this study was to examine whether TNF-alpha, IL-1beta or their combination can increase the secretion of mucin as an indicator of mucous secretion, the secretion of lysozyme as an indicator of serous secretion and the secretion of IL-6 and IL-8 as important cytokines. In addition, we wanted to examine their message levels in normal human nasal epithelium. On da

OBJECTIVES: Although complete anatomical knowledge of the nasofrontal duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the nasofrontal duct and to investigate the anatomical boundaries of the nasofrontal duct according to the drainage site. STUDY DESIGN: One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. METHODS: Computed tomography scans of 50

Dopamine beta-hydroxylase (DBH) catalyzes the conversion of dopamine to norepinephrine, and is expressed specifically in neurons and neuroendocrine cells that release norepinephrine and epinephrine. In the present study, we used DBH-expressing human neuroblastoma SK-N-BE(2)C and rat pheochromocytoma (PC12) cell lines to investigate the role of cAMP-dependent protein kinase (PKA) in transcriptional regulation of the DBH gene. Coexpression of the catalytic subunit of PKA (PKAc) robustly stimulated

BACKGROUND: We evaluated synthetic polyurethane foam (SPF; Polyganics BV, Groningen, The Netherlands) as a packing material used after septoplasty compared with Merocel (Medtronic Xomed Surgical Products, Jacksonville, FL) in the aspects of clinical efficacy and the subjective severity of symptoms. METHODS: A prospective, randomized, single-blinded controlled study was performed in 64 patients who had undergone septoplasty. The patients were randomized to receive Merocel or SPF after septoplasty

Chronic inflammatory and neuropathic pain is often difficult to manage using conventional remedies. The underlying mechanisms and therapeutic strategies required for the management of chronic pain need to be urgently established. The cyclic AMP (cAMP) second messenger system has been implicated in the mechanism of nociception, and the inhibition of the cAMP pathway by blocking the activities of adenylyl cyclase (AC) and protein kinase A has been found to prevent chronic pain in animal models. Ho

BACKGROUND: Although a significant number of the clinical features and pathophysiologic mechanisms of chronic rhinosinusitis (CRS) have been described, only a few studies have been published on characterization of CRS in the field of aging. OBJECTIVE: We investigated the prevalence and risk factors of CRS in elderly (≥65 years old) Koreans using large-scale nationwide epidemiological data and compared the risk factors of elderly with those of younger adult participants (19-64 years old). METHODS

BACKGROUND: We evaluated the clinical efficacy and safety of the mixed solution of sodium hyaluronate and sodium carboxymethylcellulose (HA-CMC) for prevention of adhesion after endoscopic sinus surgery. METHODS: Preoperative computed tomography (CT) scans were graded. At the completion of surgery, HA-CMC was applied to Merocel and repeatedly applied after the removal of Merocel. As a control, normal saline was applied. Endoscopic examination was performed postoperatively and grading was done. R