2.Current understanding of modulated electro-hyperthermia in cancer treatment
Sungmin KIM ; Jesang YU ; Jihun KANG ; Yunkyung KIM ; Taek Yong KO
Kosin Medical Journal 2024;39(3):160-168
Traditional hyperthermia involves increasing the temperature at the tumor site to above 39 ℃, inducing death in cancer cells. Although hyperthermia is an effective cancer treatment, its clinical application has decreased due to potential complications, including damage to surrounding normal tissue. In recent years, modulated electro-hyperthermia (mEHT) has emerged as an effective and safe treatment modality. mEHT selectively heats tumor cells to 42–43 °C, while reducing the average temperature in the treatment area, including the surrounding normal tissue, compared to conventional methods. Additionally, mEHT may be used in combination with systemic chemotherapy and radiation therapy in tumor treatment, providing a synergistic effect to increase efficacy. As chemotherapy and radiation therapy technologies advance, the application of combined mEHT may improve clinical outcomes. In this study, we review and discuss reports on the clinical outcomes of mEHT combined with chemotherapy and/or radiation therapy, which are established anticancer treatments.
3.Positive Effects of Biologics on Osteoporosis in Rheumatoid Arthritis
Journal of Rheumatic Diseases 2023;30(1):3-17
Osteoporosis is a systemic skeletal disorder that causes vulnerability of bones to fracture owing to reduction in bone density and deterioration of the bone tissue microstructure. The prevalence of osteoporosis is higher in patients with autoimmune inflammatory rheumatic diseases, including rheumatoid arthritis (RA), than in those of the general population. In this autoimmune inflammatory rheumatic disease, in addition to known risk factors for osteoporosis, various factors such as chronic inflammation, autoantibodies, metabolic disorders, drugs, and decreased physical activity contribute to additional risk. In RA, disease-related inflammation plays an important role in local or systemic bone loss, and active treatment for inflammation can help prevent osteoporosis. In addition to conventional synthetic disease-modifying anti-rheumatic drugs that have been traditionally used for treatment of RA, biologic DMARDs and targeted synthetic DMARDs have been widely used. These agents can be employed more selectively and precisely based on disease pathogenesis. It has been reported that these drugs can inhibit bone loss by not only reducing inflammation in RA, but also by inhibiting bone resorption and promoting bone formation. In this review, the pathogenesis and research results of the increase in osteoporosis in RA are reviewed, and the effects of biological agents on osteoporosis are discussed.
4.Pharmacological treatment of osteoporosis: 2022 update
Journal of the Korean Medical Association 2022;65(4):241-248
Osteoporosis is a skeletal disorder characterized by compromised bone strength resulting in a predisposition to fracture. Osteoporosis-related fractures can lead to pain, disability, and increased healthcare costs. We aimed to explore the guidelines and criteria for selecting medications for osteoporosis.Current Concepts: Osteoporosis medications can be classified mainly as antiresorptive drugs and osteogenesis promoters. The former includes selective estrogen receptor modulators, bisphosphonates, and receptor activators of nuclear factor kappa-B ligand inhibitors, e.g., denosumab. The latter includes human parathyroid hormone, e.g., teriparatide, and the dual-action agent, romosozumab. Selective estrogen receptor modulators (raloxifene or bazedoxifene) can be considered suitable for younger postmenopausal women with low spine bone mineral density. It also can be used for patients with low glomerular filtration rates due to low excretion in urine and patients who need dental care. Bisphosphonate has a residual effect on bone; therefore, osteonecrosis of the jaw and atypical fractures should be considered as side effects for its long-term use. Presently, denosumab is the most potent antiresorptive agent, but its favorable skeletal effects can be reversed quickly after its cessation. Therefore, subsequent antiresorptive treatment is mandatory. Romosozumab is a dual-action agent that simultaneously stimulates bone formation and inhibits bone resorption. It also needs a subsequent antiresorptive treatment.Discussion and Conclusion: Tailored treatment is needed in a patient with osteoporosis. Even in the case of the same bone density, the risk of fracture and the fracture sites differ depending on age. After setting an achievable goal of bone density within a suitable period, the appropriate medication should be selected.
5.Catastrophic Health Expenditure and Trend of South Korea in 2018
Wonjeong JEONG ; Yunkyung KIM ; Eun-Cheol PARK
Health Policy and Management 2020;30(1):126-130
Catastrophic health expenditure refers to measure the level of the economic burden of households due to medical expenses. The purpose of this study was to examine the proportion of households that experienced catastrophic health expenditure between 2006 and 2018 using available data from the National Survey of Tax and Benefit (NaSTaB), Korea Health Panel (KHP), and Households Income and Expenditure Survey (HIES). Trend test was used to analyze the proportion of household with catastrophic healthcare expenditure. The households experienced the catastrophic health expenditure 2.08% in 2018 using the NaSTaB data. Trend analysis was significant with the decreasing trend (Annual Percentage Change [APC], -4.88; p<0.0001) in the proportion of households with the catastrophic health expenditure. On the other hand, the results of the HIES showed 2.92%, and KHP showed 2.48% of households experienced the catastrophic health expenditure in 2016. The trend was significantly increased in HIES (APC, 1.43; p<0.0001) and KHP (APC, 6.68; p<0.0001). Therefore, this suggests that further interventions to alleviate the burden of catastrophic health expenditure to the low-income group are needed.
7.The Impact of the Amendment of the Korean National Health Insurance Reimbursement Criteria for Anti-tumor Necrosis Factor-α Agents on Treatment Pattern, Clinical Response and Persistence in Patients With Rheumatoid Arthritis
Yunkyung KIM ; Geun-Tae KIM ; Young Sun SUH ; Hyun-Ok KIM ; Han-Na LEE ; Seung-Geun LEE
Journal of Rheumatic Diseases 2020;27(3):159-167
Objective:
. To investigate the impact of the amendment of the Korean National Health Insurance (KNHI) reimbursement criteria for anti-tumor necrosis factor-α (TNF-α) agents based on from conventional clinical and laboratory measurements to disease activity score of 28 joints (DAS28) on treatment pattern, clinical response, and persistence rate in patients with rheumatoid arthritis (RA).
Methods:
. This multicenter retrospective cohort study evaluated 148 RA patients eligible for the initiation of anti- TNF-α agents as the first-line biologics by either the past (n=95) or current (n=53) KNHI reimbursement criteria. Persistence was defined as the duration between the initiation and discontinuation of anti-TNFα agents.
Results:
. In total, 106 (71.6%), 35 (23.6%), and 7 (4.7%) RA patients started treatment with adalimumab, etanercept, and infliximab, respectively. RA patients who received anti-TNF-α agents under the current reimbursement criteria had a significantly lower mean DAS28-erythrocyte sedimentation rate (ESR) (6.02 vs. 6.95, p<0.001) and daily prednisolone-equivalent glucocorticoid dose (4.51 vs. 6.17 mg, p<0.001) than those who received anti-TNF-α agents under the past reimbursement criteria. No significant differences in the 1-year remission rate defined by DAS28-ESR<2.6 (17.9% vs. 30.2%, p=0.085) and the persistence rate (p=0.703) between the past and current reimbursement criteria was observed.
Conclusion
. Our data suggest that less active RA patients can receive reimbursement for anti-TNF-α agents under the current criteria, and the amendment of the KNHI reimbursement criteria may improve access to anti-TNF-α agents without affecting the treatment response and persistence rate.
8.Catastrophic Health Expenditure and Trend of South Korea in 2017
Yunkyung KIM ; Dong Woo CHOI ; Eun Cheol PARK
Health Policy and Management 2019;29(1):86-89
Catastrophic health expenditure refers to spending more than a certain level of household's income on healthcare expenditure. The aim of this study was to investigate the proportion of households that experienced catastrophic health expenditure between 2006 and 2017 with the National Survey of Tax and Benefit (NaSTaB) and between 2011 to 2016 using Households Income and Expenditure Survey (HIES) data. The results of the NaSTaB showed 2.16% of households experienced the catastrophic health expenditure in 2017. In trend analysis, the NaSTaB revealed a statistically significant decreasing trend (annual percentage change [APC]=−2.01, p<0.001) in the proportion of households with the catastrophic health expenditure. On the other hand, the results of the HIES showed 2.92% of households experienced the catastrophic health expenditure in 2016. Also, there was a slightly increasing trend (APC=1.43, p<0.001). In subgroup analysis, groups with lower income levels were likely to experience catastrophic health expenditure. In conclusion, further public support system is needed to lower experience these healthcare expenditures and monitor the low income group.
Delivery of Health Care
;
Family Characteristics
;
Hand
;
Health Expenditures
;
Korea
;
Taxes
9.Case of Raynaud Syndrome after the Use of Methimazole.
Yunkyung KIM ; Hee Sang TAG ; Geun Tae KIM ; Seung Geun LEE ; Eun Kyung PARK ; Ji Heh PARK ; Seong min KWEON ; Song I YANG ; Jeong Hoon KIM
Journal of Rheumatic Diseases 2018;25(3):203-206
Raynaud syndrome is a medical condition that causes pain, numbness, and changes in skin color at the distal extremities. Raynaud syndrome can be subdivided into primary Raynaud's and secondary Raynaud's. The former is diagnosed when the cause is unknown and the latter is caused by an underlying condition, such as connective tissue diseases, injury, smoking, or certain medications. Both cancer chemotherapy and β-blockers are relatively common causes of Raynaud syndrome but there are no reports of its association with methimazole administration. The authors encountered a 43-year old woman with hyperthyroidism who developed digital ulcers associated with Raynaud syndrome after a methimazole treatment. Her digital ulcers and Raynaud syndrome were improved after methimazole was replaced with propylthiouracil and conventional therapy. This paper reports this case along with a review of the relevant literature.
Connective Tissue Diseases
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Drug Therapy
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Extremities
;
Female
;
Humans
;
Hyperthyroidism
;
Hypesthesia
;
Methimazole*
;
Propylthiouracil
;
Skin Pigmentation
;
Smoke
;
Smoking
;
Ulcer
10.NAMPT enzyme activity regulates catabolic gene expression in gingival fibroblasts during periodontitis.
Ka Hyon PARK ; Duck Kyu KIM ; Yun Hyun HUH ; Gyuseok LEE ; Su Hyeon LEE ; Yunkyung HONG ; Sun Hun KIM ; Min Suk KOOK ; Jeong Tae KOH ; Jang Soo CHUN ; Shee Eun LEE ; Je Hwang RYU
Experimental & Molecular Medicine 2017;49(8):e368-
Periodontal disease is one of the most prevalent chronic disorders worldwide. It is accompanied by inflammation of the gingiva and destruction of periodontal tissues, leading to alveolar bone loss. Here, we focused on the role of adipokines, which are locally expressed by periodontal tissues, in the regulation of catabolic gene expression leading to periodontal inflammation. The expression of the nicotinamide phosphoribosyltransferase (NAMPT) adipokine was dramatically increased in inflamed human and mouse gingival tissues. NAMPT expression was also increased in lipopolysaccharide- and proinflammatory cytokine-stimulated primary cultured human gingival fibroblasts (GF). Adenovirus-mediated NAMPT (Ad-Nampt) overexpression upregulated the expression and activity of COX-2, MMP1 and MMP3 in human GF. The upregulation of IL-1β- or Ad-Nampt-induced catabolic factors was significantly abrogated by the intracellular NAMPT (iNAMPT) inhibitor, FK866 or by the sirtuin (SIRT) inhibitor, nicotinamide (NIC). Recombinant NAMPT protein or extracellular NAMPT (eNAMPT) inhibition using a blocking antibody did not alter NAMPT target gene expression levels. Moreover, intragingival Ad-Nampt injection mediated periodontitis-like phenotypes including alveolar bone loss in mice. SIRT2, a part of the SIRT family, was positively associated with NAMPT actions in human GF. Furthermore, in vivo inhibition of the NAMPT-NAD⁺-SIRT axis by NIC injection in mice ameliorated the periodontal inflammation and alveolar bone erosion caused by intragingival injection of Ad-Nampt. Our findings indicate that NAMPT is highly upregulated in human GF, while its enzymatic activity acts as a crucial mediator of periodontal inflammation and alveolar bone destruction via regulation of COX-2, MMP1, and MMP3 levels.
Adipokines
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Alveolar Bone Loss
;
Animals
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Fibroblasts*
;
Gene Expression*
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Gingiva
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Humans
;
Inflammation
;
Mice
;
Niacinamide
;
Nicotinamide Phosphoribosyltransferase
;
Periodontal Diseases
;
Periodontitis*
;
Phenotype
;
Up-Regulation

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