• 대한두개안면성형외과학회지
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• 제24권4호
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• pp.189-192
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• 2023

An intraosseous hemangioma of the frontal bone is typically removed via a coronal incision. This procedure, while effective, can be lengthy and may result in complications such as a prominent scar and hair loss. An alternative approach involves a direct incision in the forehead, which leaves a less noticeable scar and allows a quicker recovery. However, in this specific case, the patient declined both coronal surgery and surgery through a direct forehead incision due to cosmetic concerns. Therefore, we proposed an anterior hairline incision. A 35-year-old woman presented with a firm, non-mobile, palpable mass on her right forehead. Preoperative non-contrast computed tomography revealed a heterogeneous osteolytic lesion. We performed an excisional biopsy through the anterior hairline. Postoperative non-contrast computed tomography was conducted 2 and 6 months after surgery. The wound was clean and free of complications, and there was no local recurrence. Partial resection can reduce scarring for patients who are concerned about cosmetic outcomes. However, the potential for recurrence remains a significant concern. We present this case of an anterior hairline incision for a hemangioma located in the forehead, evaluated using serial computed tomography for both preoperative and postoperative imaging.

• BMB Reports
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• 제57권5호
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• pp.256-261
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• 2024

In the context of aging, the susceptibility to infectious diseases increases, leading to heightened morbidity and mortality. This phenomenon, termed immunosenescence, is characterized by dysregulation in the aging immune system, including abnormal alterations in lymphocyte composition, elevated basal inflammation, and the accumulation of senescent T cells. Such changes contribute to increased autoimmune diseases, enhanced infection severity, and reduced responsiveness to vaccines. Utilizing aging animal models becomes imperative for a comprehensive understanding of immunosenescence, given the complexity of aging as a physiological process in living organisms. Our investigation focuses on Cisd2, a causative gene for Wolfram syndrome, to elucidate on immunosenescence. Cisd2 knockout (KO) mice, serving as a model for premature aging, exhibit a shortened lifespan with early onset of aging-related features, such as decreased bone density, hair loss, depigmentation, and optic nerve degeneration. Intriguingly, we found that the Cisd2 KO mice present a higher number of neutrophils in the blood; however, isolated neutrophils from these mice display functional defects. Through mass spectrometry analysis, we identified an interaction between Cisd2 and Calnexin, a protein known for its role in protein quality control. Beyond this function, Calnexin also regulates calcium homeostasis through interaction with sarcoendoplasmic reticulum calcium transport ATPase (SERCA). Our study proposes that Cisd2 modulates calcium homeostasis via its interaction with Calnexin and SERCA, consequently influencing neutrophil functions.

• Journal of Preventive Medicine and Public Health
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• 제57권2호
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• pp.128-137
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• 2024

Objectives: This study was conducted to characterize the symptoms, mental health, quality of life (QoL), and associated factors following the coronavirus disease 2019 (COVID-19) infection. Methods: This cross-sectional study included 394 participants previously infected with COVID-19 in Ho Chi Minh City, Vietnam. Mental health was assessed using the 21-item Depression, Anxiety, and Stress Scale (DASS-21). Participants self-reported health-related QoL was measured with the EuroQol 5-Dimension 5-Level (EQ-5D-5L) scale. Results: Among the participants, 76.4% reported experiencing at least one symptom following COVID-19 infection. The most common symptoms were fatigue (42.1%), cognitive dysfunction (42.9%), and hair loss (27.9%). According to the DASS-21 results, the proportions of depression, anxiety, and stress were 28.7%, 26.4%, and 20.6%, respectively. The mean scores on the EQ-5D-5L and the EuroQol Visual Analog Scale were 0.94±0.11 and 84.20±13.11, respectively. Regarding QoL issues, the highest proportion of participants (32.7%) reported experiencing anxiety or depression, followed by pain or discomfort (25.4%). Multivariable logistic regression analysis revealed that factors associated with the presence of symptoms following COVID-19 infection included female (odds ratio [OR], 2.84; 95% confidence interval [CI], 1.65 to 4.91) and having QoL issues (OR, 3.25; 95% CI, 1.71 to 6.19). Conclusions: The study investigated the prevalence rates of various symptoms following COVID-19 infection. These findings underscore the need to prioritize comprehensive care for individuals recovering from COVID-19 and to implement strategies to mitigate the long-term impact of the disease on mental health and QoL.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2018년도 추계학술대회
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• pp.26-27
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• 2018

유전 자원에 대한 접근 및 이용에 따른 이익의 공정한 공유를 표방하는 나고야 의정서가 발효되면서, 최근 국내 천연자원을 이용한 바이오 소재 및 제품 개발 연구에 많은 지원이 이뤄지고 있다. 국내 화장품 연구 및 개발 동향은 기존의 합성 화합물 중심에서 벗어나 안전성이 확보된 천연 바이오 소재 중심으로 변화하고 있다. 또한 기능성화장품의 범위가 기존에 크게 미백, 주름개선, 자외선 차단 3가지에서 염모, 탈모 완화, 여드름 완화, 아토피성 피부의 보습 등으로 세분화 및 추가됨으로써 화장품 연구 개발의 범위가 확대되었다. 이러한 기능성 화장품 범위 확대, 화장품 소재에 대한 안전성 규제 강화, 동물실험 금지 등 화장품 연구 환경 변화로 인해 다양한 천연물 기반의 생물학적 활성을 갖는 유효 성분들이 기능성 화장품 소재로 연구되는 사례가 점차 증가하고 있다. 충북은 바이오산업을 지역 특화산업으로 선정하여 바이오산업 육성을 위한 중부권의 오송생명과학단지/오창과학산업단지와 북부권 제천 바이오벨리 조성, 충주기업도시 등을 통해 바이오 제약 및 화장품 기업 유치 와 바이오 산업클러스터를 완성해 가고 있다. 이와 더불어 오송생명과학단지 내에 위치한 오송화장품임상연구지원센터는 충북 지역 중소 화장품 기업들의 글로벌 시장 진출 및 동남아 수출 지원을 위해 임상시험, 효능평가, 해외 인증, 해외시장 박람회 등의 지원을 중점적으로 수행하고 있다. 이러한 하드웨어 인프라 조성과 함께 충북의 천연 소재를 이용한 다양한 국책 연구 개발 사업을 추진하여 충북 특화자원인 황기, 오미자 뿐 아니라 두충, 익지인, 소목 등을 이용한 화장품 소재 개발 연구를 수행하고 있다. 충북지역 기업체 및 연구기관을 중심으로 천연물의 지표 및 유효 물질 원료 확보와 이를 활용한 기능성 화장품 제품화가 본격적으로 추진되고 있어 향후 충북 천연물 산업은 화장품 산업을 중심으로 더욱 성장해 나갈 것으로 기대된다.

• 한국방사선학회논문지
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• 제13권2호
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• pp.175-183
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• 2019

뇌신경계 인터벤션 시술은 장시간의 시술로 인해 피부의 수포, 탈모, 홍반 등의 방사선 피폭으로 인한 위해가 빈번히 보고되고 있다. 인체공학적으로 제작된 Bismuth (원자번호 83;Bi) 차폐체를 뇌혈관계 인터벤션 시술에 적용함으로써 의료방사선 피폭으로부터 두피 및 수정체의 방사선 피폭을 최소화하고자 하였다. 측정 부위는 4부위로 후두부(9 points), 양쪽 측두부(12 points), 양쪽 수정체부(6 points), 코 끝부(6 points)이며, 측정 소자는 광자극 형광 선량계(Optically Stimulated Luminescence Dosimeter: OSLD)를 각 지점(points)에 측정기를 부착 후 자체 제작된 Bismuth차폐 기구를 사용 전(A그룹)과 후(B그룹)를 측정한 후 피부표면선량(entrance surface dose)을 비교 분석하였다. A 그룹(Bismuth unshield)과 B 그룹(Bismuth shield)의 피부선량 평균은 A 그룹은 92.44 mGy였고, B 그룹은 67.55 mGy로 측정되었다. A 그룹에 비해 B 그룹에서 평균 26.92% 감소되었다. 후두부의 피부선량 평균은 A 그룹(9 point)은 146.08 mGy, B 그룹(9 point)은 103.23 mGy로 측정되었고 A 그룹에 비해 B 그룹에서 평균 29.32 % 감소하였다. 측두부의 피부선량 평균은 A 그룹(6 point)은 101.90 mGy, B 그룹(6 point)은 72.69 mGy로 측정되었고 A 그룹에 비해 B 그룹에서 평균 28.67% 감소하였다. 수정체부의 피부선량 평균은 A 그룹(3 point)은 27.51 mGy, B 그룹(3 point)은 21.39 mGy로 측정되었고 A 그룹에 비해 B 그룹에서 평균 22.26% 감소하였다. Bismuth 차폐체의 사용은 뇌혈관 중재적 시술 후 나타날 수 있는 일시적 탈모 및 기타 확률적 영향에 따른 방사선 장해를 감소시킬 수 있는 대안이 될 것으로 사료된다.

• Journal of Plant Biotechnology
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• 제34권4호
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• pp.285-291
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• 2007

본 연구는 아그로박테리움 공동배양법을 이용한 기능획득 인삼 모상근의 대량생산을 위한 조건 확립에 대한 것이다. 일반적으로, 인삼과 같이 형질전환을 통한종자의 확보가 어려운 식물에서는 loss-of-function을 이용한 기능유전체 연구에 한계가 있다. 한편, 유전자의 기능을 활성화시키는 방법 (gain-of-function)인 activation tagging 기술은 이러한 문제점을 극복할 수 있는 대안이 될 수 있으며, Agrobacterium rhizogenes를 이용한 모상근 생산 시스템은 대량의 돌연변이체를 안정적으로 용이하게 얻을 수 있다는 점에서 최적의 시스템이라고 할 수 있다. 본 연구에서는 activation-tagging된 효율적인 형질전환 모상근 생산에 있어서의 최적의 아그로박테리움 균주 및 인삼조직, 배지조성 등에 대한 조건을 확립하였으며, 다양한 배지에서의 형질전환 모상근의 생장률 및 분지율, 표현형 등을 조사하였다. 엽병 절편을 activation-tagging vector pKH01을 가지고 있는 A. rhizogenes R1000와 공동배양하였을 때 배양 4주후 85.9%의 빈도로 모상근이 생산되었다. 모상근의 최대 생장과 분지도를 나타내는 배양조건을 조사한 바 엽병절편을 1/2 SH 배지에서 4주 배양하였을 때 왕성하게 생장하였으며 2.6의 분지도를 보여주었다. 최종적으로 1,989개체의 독립적인 형질전환 모상근 line을 생산하였으며, 이들 모상근 line은 인삼 진세노사이드 생합성 관련 유전자의 발굴 및 기능해석에 유용하게 쓰일 것이다.

• Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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• 제61권11호
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• pp.573-579
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• 2018

Background and Objectives Cochlear dead region (CDR) is a region in the cochlear where hearing loss has occurred due to damage to the inner hair cells and/or neurons. Recently, a subjective test involving a pure-tone test in the presence of threshold-equalizing noise (TEN) was introduced to identify CDR. However, for uncooperative patients, such a subjective method would be unsuitable and objective methods would be needed instead to detect CDR. The acoustic change complex (ACC) is an evoked potential elicited by changes in the ongoing sound. In this study, we developed an objective method of identifying CDR by combining ACC response with a TEN test, namely the TEN-ACC test, and investigated its feasibility in normal-hearing listeners. Subjects and Method Ten normal-hearing subjects participated in this study. All subjects underwent both behavioral TEN test and electrophysiological TEN-ACC test. The stimuli for the TEN-ACC test consisted of TEN and embedded pure tones with different frequencies/signals to noise ratios (SNRs). To identify the thresholds, the range SNR of stimulation was varied from 0 to 20 dB, in stages of 4 dB. Results The ACC responses of all subjects who participated in this study were well elicited by stimuli developed for the TEN-ACC test. We confirm that the pure-tones embedded in TEN elicited the objective ACC response. Conclusion The results of this study suggest that the novel TEN-ACC test can be applied to evoke ACC in normal-hearing listeners. Future research should incorporate hearing-impaired listeners to determine the feasibility of the TEN-ACC test as an objective method to identify CDR.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제43회 하계 정기 학술대회 초록집
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• pp.269-269
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• 2012

A new ion source has been designed, fabricated, and installed at the NBTS (Neutral Beam Test Stand) at the KAERI (Korea Atomic Energy Research Institute) site. The goalis to provide a 100 keV, 2MW deuterium neutral beam injection as an auxiliary heating of KSTAR (Korea Super Tokamak Advanced Research). To cope with power demand, an ion current of 50 A is required considering the beam power loss and neutralization efficiency. The new ion source consists of a magnetic cusp bucket plasma generator and a set of tetrode accelerators with circular copper apertures. The plasma generator for the new ion source has the same design concept as the modified JAEA multi-cusp plasma generator for the KSTAR prototype ion source. The dimensions of the plasma generator are a cross section of $59{\times}25cm^2$ with a 32.5 cm depth. The anode has azimuthal arrays of Nd-Fe permanent magnets (3.4 kG at surface) in the bucket and an electron dump, which makes 9 cusp lines including the electron dump. The discharge properties were investigated preliminarily to enhance the efficiency of the beam extraction. The discharge of the new ion source was mainly controlled by a constant power mode of operation. The discharge of the plasma generator was initiated by the support of primary electrons emitted from the cathode, consisting of 12 tungsten filaments with a hair-pin type (diameter = 2.0 mm). The arc discharge of the new ion source was achieved easily up to an arc power of 80 kW (80 V/1000 A) with hydrogen gas. The 80 kW capacity seems sufficient for the arc power supply to attain the goal of arc efficiency (beam extracted current/discharge input power = 0.8 A/kW). The accelerator of the new ion source consists of four grids: plasma grid (G1), gradient grid (G2), suppressor grid (G3), and ground grid (G4). Each grid has 280 EA circular apertures. The performance tests of the new ion source accelerator were also finished including accelerator conditioning. A hydrogen ion beam was successfully extracted up to 100 keV /60 A. The optimum perveance is defined where the beam divergence is at a minimum was also investigated experimentally. The optimum hydrogen beam perveance is over $2.3{\mu}P$ at 60 keV, and the beam divergence angle is below $1.0^{\circ}$. Thus, the new ion source is expected to be capable of extracting more than a 5 MW deuterium ion beam power at 100 keV. This ion source can deliver ~2 MW of neutral beam power to KSTAR tokamak plasma for the 2012 campaign.

• Journal of Oral Medicine and Pain
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• 제40권3호
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• pp.110-114
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• 2015

Purpose: Growth and differentiation factor (GDF)-11 is a transforming growth factor-${\beta}$ family member that plays important regulatory roles in development of multiple tissues which include axial skeletal patterning, palatal closure, and tooth formation. Proteins that have been identified as GDF-11 inhibitors include GDF-associated serum protein (GASP)-1 and GASP-2. Recently, we found that mice genetically engineered to lack both Gasp1 and Gdf11 have an increased frequency of cleft palate. The goal of this study was to investigate the roles of GDF-11 and its inhibitors, GASP-1 and GASP-2, during dental and craniofacial development and growth. Methods: Mouse genetic studies were used in this study. Homozygous knockout mice for Gasp1 ($Gasp1^{-/-}$) and Gasp2 ($Gasp2^{-/-}$) were viable and fertile, but Gdf11 homozygous knockout ($Gdf11^{-/-}$) mice died within 24 hours after birth. The effect of either Gasp1 or Gasp2 deletion in $Gdf11^{-/-}$ mice during embryogenesis was evaluated in $Gasp1^{-/-}$;$Gdf11^{-/-}$ and $Gasp2^{-/-}$;$Gdf11^{-/-}$ mouse embryos at 18.5 days post-coitum (E18.5). For the analysis of adult tissues, we used $Gasp1^{-/-}$;$Gdf11^{+/-}$ and $Gasp2^{-/-}$;$Gdf11^{+/-}$ mice to evaluate the potential haploinsufficiency of Gdf11 in $Gasp1^{-/-}$ and $Gasp2^{-/-}$ mice. Results: Although Gasp2 expression decreased after E10.5, Gasp1 expression was readily detected in various ectodermal tissues at E17.5, including hair follicles, epithelium in nasal cavity, retina, and developing tooth buds. Interestingly, $Gasp1^{-/-}$;$Gdf11^{-/-}$ mice had abnormal formation of lower incisors: tooth buds for lower incisors were under-developed or missing. Although $Gdf11^{+/-}$ mice were viable and had mild transformations of the axial skeleton, no specific defects in the craniofacial development have been observed in $Gdf11^{+/-}$ mice. However, loss of Gasp1 in $Gdf11^{+/-}$ mice occasionally resulted in small and abnormally shaped auricles. Conclusions: These findings suggest that both GASP-1 and GDF-11 play important roles in dental and craniofacial development both during embryogenesis and in adult tissues.

• Asian Pacific Journal of Cancer Prevention
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• 제16권18호
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• pp.8101-8105
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• 2016

Background: This study examined the psychometric properties of the Bahasa Malaysia (BM) version of the European Organization for Research and Treatment of Cancer (EORTC) Colorectal Cancer-specific Quality Of Life Questionnaire (QLQ-CR29). Materials and Methods: We studied 93 patients recruited from University Malaya and Universiti Kebangsaan Medical Centers, Kuala Lumpur, Malaysia using a self-administered method. Tools included QLQ-C30, QLQ-CR29 and Karnofsky Performance Scales (KPS). Statistical analyses included Cronbach's alpha, test-retest correlations, multi-traits scaling and known-groups comparisons. A p vaue ${\leq}0.05$ was considered significant. Results: The internal consistency coefficients for body image, urinary frequency, blood and mucus and stool frequency scales were acceptable (Cronbach's alpha ${\alpha}{\geq}0.65$). However, the coefficients were low for the blood and mucus and stool frequency scales in patients with a stoma bag (${\alpha}=0.46$). Test-retest correlation coefficients were moderate to high (range: r = 0.51 to 1.00) for most of the scales except anxiety, urinary frequency, buttock pain, hair loss, stoma care related problems, and dyspareunia (r ${\leq}0.49$). Convergent and discriminant validities were achieved in all scales. Patients with a stoma reported significantly higher symptoms of blood and mucus in the stool, flatulence, faecal incontinence, sore skin, and embarrassment due to the frequent need to change the stoma bag (p < 0.05) compared to patients without stoma. None of the scales distinguished between patients based on the KPS scores. There were no overlaps between scales in the QLQ-C30 and QLQ-CR29 (r < 0.40). Conclusions: the BM version of the QLQ-CR29 indicated acceptable psychometric properties in most of the scales similar to original validation study. This questionnaire could be used to complement the QLQ-C30 in assessing HRQOL among BM speaking population with colorectal cancer.