• International Journal of Oral Biology
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• 제34권1호
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• pp.37-42
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• 2009

The attachment and adhesion of RAW 264.7 and MC3T3-E1 cells to titanium (Ti) discs with various degrees of roughness was investigated. The attachment, adhesion, and proliferation of these cells were evaluated after 4 hr, 24 hr and 7 day incubations. Both RAW 264.7 and MC3T3-E1 cells showed a time-dependant correlation between attachment and adhesion on the surface of the titanium discs. Both types of cells tended to have higher survival rate on these discs as the surface roughness increased. The percentage of adherent inflammatory RAW 264.7 cells was greater than MC3T3-E1 cells at 24 hr, but this was reversed at 7 days in culture. The morphology of osteoblastic MC3T3-E1 cells at 24 hr, determined using a surface emission microscope (SEM), appeared flattened and spread out while inflammatory RAW 264.7 cells were predominantly spherical in shape. The adhesion of both cell types on the titanium discs was dependant on the levels of fibronectin adsorbed on the disc surface, indicating that serum constituents modulate the efficient adhesion of these cells. Our data indicate that the cellular response to the titanium surface is dependent on the types of cells, surface roughness and serum constituents.

• 대한임상약리학회:학술대회논문집
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• 대한임상약리학회 2002년도 춘계심포지움
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• pp.13-15
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• 2002

• 대한약리학회:학술대회논문집
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• 대한약리학회 2006년도 58th Annual Meeting of The Korean Society of Pharmacology
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• pp.44-44
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• 2006

• 대한임상약리학회:학술대회논문집
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• 대한임상약리학회 2006년도 제15차 추계학술대회
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• pp.139-140
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• 2006

• 한국당과학회:학술대회논문집
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• 한국당과학회 2006년도 제1회 연례학술대회
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• pp.21-22
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• 2006

• 대한임상약리학회:학술대회논문집
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• 대한임상약리학회 2001년도 춘계 심포지움
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• pp.16-17
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• 2001

• International Journal of Oral Biology
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• 제44권4호
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• pp.173-181
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• 2019

The CC chemokine receptor 5 (CCR5) is a G protein-coupled receptor that regulates chemotaxis and effector functions of immune cells. It also serves as the major co-receptor for the entry of human immunodeficiency virus (HIV). Recently, CCR5 inhibitors have been developed and used for the treatment or prevention of HIV infections. Additionally, it has been identified that CCR5 controls bone homeostasis by regulating osteoclastogenesis and the communication between osteoblasts and osteoclasts. However, the effects of CCR5 inhibition on bone tissue in elderly patients are unknown. This study aimed to examine the bone phenotype of aged CCR5 knockout (KO) mice. Femoral and tibial bones were isolated from 12-month and 18-month old wild-type (WT) and CCR5 KO mice, and microcomputed tomography and histology analyses were performed. Twelve-month-old CCR5 KO mice exhibited a decreased trabecular bone mass and cortical bone thickness in both femoral and tibial bones compared with age-matched WT mice. Eighteen-month-old mice also showed a decreased trabecular bone mass in femurs compared with control WT mice, but not in tibial bones. Unlike in 12-month-old mice, the cortical margin of femurs and tibias in 18-month-old mice were rough, likely because they were aggravated by the deficiency of CCR5. Overall, our data suggest that the deficiency of CCR5 with aging can cause severe bone loss. When CCR5 inhibitors or CCR5 inactivating technologies are used in elderly patients, a preventive strategy for bone loss should be considered.

• 말소리와 음성과학
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• 제14권4호
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• pp.57-66
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• 2022

본 연구는 '디지털 치료제'의 정의를 확인하기 위해 이와 관련된 연구들을 통해 확인해보고, 디지털 치료제의 개발 동향을 국내 수준에서 조사해 보았다. 그리고 2015년 이후 연구 자료를 대상으로 디지털 치료제가 의사소통장애 분야에서 언어장애와 말장애 대상자들 중 어떤 장애 분야에 적용된 연구가 진행되어 왔는지 그리고 어떠한 기술이 적용된 연구가 이루어 왔는가 역시 분석해 보았다. 그 결과 디지털 치료제는 소프트웨어라는 점, 예방·관리·치료하기 위해 환자에게 적용되는 소프트웨어적인 치료제이며 근거 기반 치료를 제공하는 소프트웨어로 정의할 수 있다. 디지털 치료제와 관련해서 엄청난 투자를 진행하고 있고 이와 더불어 관련된 연구도 지속적으로 증가하고 있음을 확인할 수 있었다. 다음으로 의사소통장애 대상자에게 디지털 치료제를 적용한 2015년 연구 사례를 분석한 결과 언어장애에 해당하는 연구가 전체 22편 중에서 17편으로 주를 이루었고, 말장애 분야 연구, 일반아동을 대상으로 한 연구, 전문가를 대상으로 한 연구가 있었다. 디지털 치료제에 적용될 수 있는 다양한 기술 중 가장 많이 적용된 기술은 가상현실과 증강현실이었다. 가상현실보다는 증강현실을 적용한 연구가 대부분이었음을 확인할 수 있었고 AI를 적용한 연구도 있었다. 그리고 디지털 치료제의 적용 후 효과는 대부분 긍정적으로 나타났고, 디지털 치료제 개발과 관련해서 대부분은 콘텐츠 개발에 중점을 두고 있으나 한 편의 연구는 앱 개발을 위해 진행된 연구다. 향후 연구에서는 보다 다양한 의사소통장애 대상자에게 적용 가능한 소프트웨어를 개발하고 보다 광범위한 기술을 적용한 연구들이 꾸준히 이루어지고 이러한 분야에 대한 정부의 적극적인 지원도 이루어지기를 기대해 본다.

• Journal of Acupuncture Research
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• 제29권6호
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• pp.91-104
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• 2012

Objectives : The purpose of this study is to observe the effect of Intranasal Bloodletting Therapeutics on the Allergic Rhinitis. Methods : 8 patients were treated by intranasal bloodletting therapeutics to recover from allergic rhinitis. The symtoms were evaluated by total nasal sympton score(TNSS), verbal numerical rating scale(VNRS). Results : Total nasal sympton score(TNSS) was significantly improved and verbal numerical rating scale(VNRS) was decreased in all cases. Conclusion : Intranasal bloodletting therapeutics is effective to allergic Rhinitis.

• International Journal of Oral Biology
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• 제44권4호
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• pp.182-190
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• 2019

Periodontitis is an inflammatory disease of the supportive tissues surrounding the teeth, and is characterized by irreversible destruction of the gingiva, periodontal ligament (PDL), and alveolar bone, which results in the loss of teeth. In the present study, we elucidated the correlation between periodontitis and apelin (APLN), an adipokine and a regulatory peptide, respectively, which are involved in inflammation and bone remodeling. The expression of APLN is negatively correlated with periodontitis progression in gingival tissue. In addition, treatment with TNF-α downregulated the expression of APLN in PDL cells and gingival fibroblasts, indicating the protective role played by APLN against periodontitis progression. The overexpression of APLN or treatment with exogenous APLN suppressed the TNF-α-mediated catabolic gene expression of MMP1, IL6, and PTGS2 in PDL cells. Moreover, the inhibition of the APLNA-PJ axis by ML221, an APJ inhibitor, induced catabolic gene expression in PDL cells. Thus, the results of this study provided evidence to support APLN as a regulatory factor of the inflammatory response during periodontitis.