• Clinical and Experimental Pediatrics
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• 제45권4호
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• pp.512-518
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• 2002

목 적: 저자들은 뇌성마비의 임상양상과 원인인자를 관찰함으로써 본질환의 원활한 진단과 치료에 도움이 되고자 본 연구를 시행하였다. 방 법: 운동발달 지연이나 자세이상으로 성분도병원 소아과를 방문하여 뇌성마비로 진단 받고 부설 소아물리치료실에서 추적 관찰한 103명의 환아를 대상으로 후향적인 연구를 통하여 뇌성마비 환아의 생리적 분류와 고위험요인 및 뇌단층 또는 뇌자기공명영상의 결과 등을 분석하였다. 결 과 : 1) 총 103명의 환아들 중 남아가 64명, 여아가 39명이었다. 2) 뇌성마비 환아들 중 미숙아 출생이 59명, 만삭아 출생이 44명이었다. 3) 대상 환아 103명의 생리적 국소학적 분류에서는 경직성 반신마비가 55례(53.4%)로 가장 많았다. 4) 대상 환아의 위험인자로 산전인자는 전치태반 1례(0.9%), 태반조기박리 1례(0.9%), 거대세포 바이러스 감염 1례(0.9%)였다. 주산기 인자는 미숙아 출생이 59례(52.2%), 신생아 가사 12례(10.6%), 난산 2례(1.7%), 다태임신 5례(5.5%), 둔위분만 1례(0.9%)였다. 산후인자는 두부 외상 3례(2.7%), 뇌막염 2례(1.8%)였으며, 총 103명의 환아들 중 원인을 모르는 경우도 26례(23%)였다. 5) 대상 환아의 뇌단층촬영 및 뇌자기공명영상 소견은 미숙아군 59례 중 55례에서 관찰한 결과 37례(62.7%)에서 뇌실주위연화증이 가장 많았고 정상소견도 6례(10.2%)였다. 만삭아군은 44례 중 33례에서 관찰한 결과 뇌위축이 15례(41.7%)로 가장 많았고, 정상소견을 보인 경우도 6례(13.6%)였다. 6) 대상 환아 103명 중 29례(28.2%)에서 경련을 동반하였다. 결 론: 최근의 뇌성마비 원인인자와 임상양상 등 그 특징을 이해함으로써 뇌성마비의 진단과 치료에 도움이 될 것으로 사료된다.

• 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.

• 한국수정란이식학회:학술대회논문집
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• 한국수정란이식학회 2002년도 국제심포지엄
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• pp.109-109
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• 2002

In recent reports, the multiple reproductive defects such as cryptorchidism, hypospadias, epididymal cysts, low sperm counts, and testicular cancers are increased in humans, and these changes were doubted by the chemicals with estrogenic or antiandrogenic activities in our environment. To compare the effects of neonatal exposure of di (n-butyl) phthalate and flutamide on the development of reproductive organs and to identify the specific mechanisms of these abnormalities related to the male reproducton, Sprague-Dawley neonate male rats were injected subcutaneously during 5-14 days after birth with corn oil (control), flutamide (0.05, 0.1, and 0.5 mg/animal) and DBP (5, 10, and 20 mg/animal). Animals were killed at 31 (immature) and 42 (pubertal) days of age respectively and blood was collected from abdominal aorta for serum testosterone analysis. Testes, epididymides, seminal vesicles, ventral prostate, levator ani plus bulbocavernosus muscle (LABC), cowpers glands and glans penis were weighed. Expression of steroid hormone receptors (AR and ER) was examined in the testes and ventral prostate. At 31 days of age, ventral prostate, seminal vesicles, LABC, and cowpers glands significantly decreased in the flutamide (0.5 mg/animal) and DBP (20 mg/animal), but serum testosterone levels were not changed. Flutamide slightly delayed the testes descent at the high dose (0.5 mg/animal), but DBP did not show any significant effect on the testes descent at all doses. DBP and flutamide decreased the expression of AR protein in the testes but did not affect the expression of ERa and ER protein in the testes. At 42 days of age, ventral prostate, seminal vesicles, and cowpers glands weights were still significantly decreased at the high dose of flutamide (0.5 mg/animal) and DBP (20 mg/animal), but the weights of testes and epididymides were not different. Serum testosterone decreased significantly in DBP treated animals and slightly, not significantly, in flutamide group. While DBP still significantly decreased the expression of AR protein in testis, flutamide recovered from downregulation of AR protein and did not affect the expression of ERa and ER protein in the testes. Based on these results, flutamide and DBP have shown several similar patterns in reproductive abnormalitis, but some marked differences which may be caused by different acting mechanism.

• Neonatal Medicine
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• 제18권1호
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• pp.14-22
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• 2011

신생아 출혈은 신생아실에서 흔하게 경험하는 증상 중 하나이며 신생아중환자실에서는 특히 미숙아에게 종종 발생하므로 신속한 진단 및 즉각적인 치료가 필수적이다. 신생아 출혈은 이환율과 사망률의 중요한 원인이 되며 심한 경우 생명을 위협할 수 있다. 특히 최근 들어 비약적인 신생아학의 발달로 인해 초극소저체중출생아를 포함한 미숙아들의 생존율이 높아지고 있어 혈액응고질환의 진단 및 치료의 중요성은 날로 높아져 간다고 하겠다. 출혈이 의심되는 신생아의 정확한 진단을 위해서는 출혈의 가족력, 산모의 병력, 과거 임신력, 신생아 및 산모의 약물복용여부를 포함한 자세한 병력청취가 무엇보다 주의 깊게 시행되어야 하고 특정부위에 국한되어 증상을 보이는지 아니면 광범위한 출혈인지 감별을 해야 한다. 혈소판감소증만 단독으로 보이는 신생아의 경우 자반증(petechiae)과 반상출혈(ecchymoses), 점막출혈 등이 동반될 수 있으나 대부분은 건강해 보이며 비타민 K 결핍출혈, 혈우병 같은 선천성 응고장애를 의심해 볼 수 있으며, 아파 보이는 신생아에서 폐, 위장관, 비뇨생식기계, 천자부위 등에서 출혈이 일어나는 경우는 파종성 혈관내응고증후군을 포함한 후천성 응고이상을 의심해 볼 수 있다. 특별히 외상의 흔적이나 난산의 병력이 없는 만삭아나 준미숙아 등에서 두개 내 출혈이 보이는 경우에도 반드시 혈액응고이상 질환을 의심해봐야 한다. 저자는 본 종설을 통해 신생아출혈을 유발하는 혈액응고질환에 대해 임상유형 및 발생기전에 따라 대해 1차성 및 2차성 응고이상질환으로 나누어 알아보고 이를 다시 선천성 응고장애질환과 후천성 응고장애질환으로 나눠 각각에 대해 최신지견을 토대로 자세히 살펴보고자 한다.

• Asian-Australasian Journal of Animal Sciences
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• 제23권5호
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• pp.543-555
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• 2010

The objectives of this research were the estimation of genetic parameters and trends for weaning-to-first service interval (WSI), and litter traits in a commercial swine population composed of Landrace (L), Large White (T), LT, and TL animals in Chiang Mai, Northern Thailand. The dataset contained 4,399 records of WSI, number of piglets born alive (NBA), litter weight of live piglets at birth (LBW), number of piglets at weaning (NPW), and litter weight at weaning (LWW). Variance and covariance components were estimated with REML using 2-trait analyses. An animal model was used for WSI and a sire-dam model for litter traits. Fixed effects were farrowing year-season, breed group of sow, breed group of boar (litter traits), parity, heterosis (litter traits), sow age, and lactation length (NPW and LWW). Random effects were boar (litter traits), sow, permanent environment, and residual. Heritabilities for direct genetic effects were low for WSI (0.04${\pm}$0.02) and litter traits (0.05${\pm}$0.02 to 0.06${\pm}$0.02). Most heritabilities for maternal litter trait effects were 20% to 50% lower than their direct counterparts. Repeatability for WSI was similar to its heritability. Repeatabilities for litter traits ranged from 0.15${\pm}$0.02 to 0.18${\pm}$F0.02. Direct genetic, permanent environment, and phenotypic correlations between WSI and litter traits were near zero. Direct genetic correlations among litter traits ranged from 0.56${\pm}$0.20 to 0.95${\pm}$0.05, except for near zero estimates between NBA and LWW, and LBW and LWW. Maternal, permanent environment, and phenotypic correlations among litter traits had similar patterns of values to direct genetic correlations. Boar genetic trends were small and significant only for NBA (-0.015${\pm}$0.005 piglets/yr, p<0.004). Sow genetic trends were small, negative, and significant (-0.036${\pm}$0.013 d/yr, p<0.01 for WSI; -0.017${\pm}$0.005 piglets/yr, p<0.007, for NBA; -0.015${\pm}$0.005 kg/yr, p<0.01, for LBW; -0.019${\pm}$0.008 piglets/yr, p<0.02, for NPW; and -0.022${\pm}$0.006 kg/yr, p<0.003, for LWW). Permanent environmental correlations were small, negative, and significant only for WSI (-0.028${\pm}$0.011 d/yr, p<0.02). Environmental trends were positive and significant only for litter traits (p<0.01 to p<0.0003). Selection based on predicted genetic values rather than phenotypes could be advantageous in this population. A single trait analysis could be used for WSI and a multiple trait analysis could be implemented for litter traits.

• Journal of East Asia Management
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• 제1권1호
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• pp.65-87
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• 2020

In recent years, with the rapid development of network live streaming, with the popularization of mobile Internet and mobile terminal equipment, the live streaming industry has ushered in great development. A sudden outbreak of the COVID-19 makes the PC end live streaming which has been developed for many years enter a new era, giving birth to the rapid development of mobile end live streaming. Not only because of the expansion of the live streaming industry market, the rise of the trend of the national live streaming, but also because the mobile live streaming is more and more valued by the brand, becoming an important tool for brand communication and product promotion. It is because of its unique communication characteristics that some scholars believe that the era of precision marketing has been opened by live network. Mobile live from the initial fans to reward and promote the brand, to now in the form of live marketing, consumers can "buy while watching". The time period from the understanding of the goods to the final completion of the purchase behavior has been greatly shortened. It is conducive to improving sales volume and brand awareness. Marketing communication through mobile live platform has become a popular way of brand marketing. This paper mainly studies the current situation, methods, problems and development strategies of brand marketing activities with the help of live streaming platform under the background of mobile internet. Taking Tmall live streaming platform as an example, this paper analyzes several ways of brand marketing with the help of live streaming and some universal characteristics of live streaming marketing by using the relevant theories of marketing. In view of the problems existing in live streaming brand marketing, it puts forward relevant Improvement measures. First of all, the paper puts forward the innovation in content and form. Second, the paper suggests that we should make full use of new technologies such as AR and VR to effectively combine with mobile live broadcasting. Third, the paper explores the integration of multiple channels to create intelligent marketing, and further optimize the live interface of mobile terminals. Finally, the paper emphasizes that the government departments and the platform itself should jointly supervise the mobile network live streaming platform and establish a good live broadcasting environment for mobile terminals. With the help of mobile live streaming, the marketing mode has an important impact on the promotion of brand marketing. How to make better use of this business mode and accurately use mobile live broadcast to promote brand marketing, so that enterprises can create greater profits, is also of profound research significance.

• Journal of Chest Surgery
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• 제12권3호
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• pp.281-288
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• 1979

For years, physicians and anatomists have been interested in the heart that has one functioning ventricle. Various terms have been suggested for this entity including single ventricle, common ventricle, double-inlet left ventricle, cor biatriatum triloculare, and primitive ventricle. In this report, the term "single ventricle" is utilized as suggested by Van Praagh, and is defined as that congenital cardiac anomaly in which a common or separate atrioventricular valves open into a ventricular chamber from which both great arterial trunks emerge. An outlet chamber, or infundibulum, may or may not be present and give rise to the origin of either of the great arteries. This definition excludes the entity of mitral and tricuspid atresia. An 11 year old cyanotic boy was admitted chief complaints of exertional dyspnea and frequent upper respiratory infection since 2 weeks after birth. He was diagnosed as inoperable cyanotic congenital heart disease, and remained without any corrective treatment up to his age of 11 year when he suffered from aggravation of symptoms and signs of congestive heart failure for 2 months before this admission. On 22nd of May 1979, he was admitted for total corrective operation under the impression of tricuspid atresia suggested by a pediatrician. Physical check revealed deep cyanosis with finger and toe clubbing, and grade V systolic ejection murmur with single second heart sound was audible at the left 3rd intercostal space. Development was moderate in height [135 cm] and weight[28Kg]. Routine lab findings were normal except increased hemoglobin [21.1gm%], hematocrit [64 %], and left axis deviation with left ventricular hypertrophy on EKG. Cardiac catheterization and angiography revealed 1-transposition of aorta, pulmonic valvular stenosis, double inlet of a single ventricle with d-loop, and normal atriovisceral relationship [Type III C solitus according to the classification of Van Praagh]. At operation, longitudinal incision at the outflow tract of right ventricle in between the right coronary artery and its branch [LAD from RCA] revealed high far anterior aortic valve which had fibrous continuity with mitral annulus, and pulmonic valve was stenotic up to 4 mm in diameter positioned posterolaterally to the aorta. Ventricular septum was totally defective, and one markedly hypertrophied moderator band originated from crista supraventricularis was connected down to the imaginary septum of the ventricular cavity as a pseudoseptum of the ventricle. Size of the defect was 3X3 cm2 in total. Patch closure of the defect with a Teflon felt of 3.5 x 4 cm2 was done with interrupted multiple sutures after cut off of the moderator band, which was resutured to the artificial septum after reconstruction of the ventricular septum. Pulmonic valvotomy was done from 4 mm to 11 mm in diameter thru another pulmonary arteriotomy incision, and right ventriculotomy wound was closed reconstructing the right ventricular outflow tract with pericardial autograft of 3 x 4 cm2. Atrial septal defect of 2 cm in diameter was closed with 3-0 Erdeck suture, and atrial wall was sutured also when rectal temperature reached from 24`C to 35.5`C. Complete A-V block was managed with temporary external pacemaker with a pacing rate of 110/min. thru myocardial wire, and arterial blood pressure of 80/50 mmHg was maintained with Isuprel or Dopamine dripping under the CVP of 25-cm saline. Consciousness was recovered one hour after the operation when his blood pressure reached 100 /70 mmHg, but vital signs were not stable, and bleeding from the pericardial drainage and complete anuria were persisted until his heart could not capture the pacemaker impulse, and patient died of low output syndrome 320 min after the operation.

• Journal of Chest Surgery
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• 제12권3호
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• pp.289-296
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• 1979

For years, physicians and anatomists have been interested in the heart that has one functioning ventricle. Various terms have been suggested for this entity including single ventricle, common ventricle, double-inlet left ventricle, cor biatriatum triloculare, and primitive ventricle. In this report, the term "single ventricle" is utilized as suggested by Van Praagh, and is defined as that congenital cardiac anomaly in which a common or separate atrioventricular valves open into a ventricular chamber from which both great arterial trunks emerge. An outlet chamber, or infundibulum, may or may not be present and give rise to the origin of either of the great arteries. This definition excludes the entity of mitral and tricuspid atresia. An 11 year old cyanotic boy was admitted chief complaints of exertional dyspnea and frequent upper respiratory infection since 2 weeks after birth. He was diagnosed as inoperable cyanotic congenital heart disease, and remained without any corrective treatment up to his age of 11 year when he suffered from aggravation of symptoms and signs of congestive heart failure for 2 months before this admission. On 22nd of May 1979, he was admitted for total corrective operation under the impression of tricuspid atresia suggested by a pediatrician. Physical check revealed deep cyanosis with finger and toe clubbing, and grade V systolic ejection murmur with single second heart sound was audible at the left 3rd intercostal space. Development was moderate in height [135 cm] and weight[28Kg]. Routine lab findings were normal except increased hemoglobin [21.1gm%], hematocrit [64 %], and left axis deviation with left ventricular hypertrophy on EKG. Cardiac catheterization and angiography revealed 1-transposition of aorta, pulmonic valvular stenosis, double inlet of a single ventricle with d-loop, and normal atriovisceral relationship [Type III C solitus according to the classification of Van Praagh]. At operation, longitudinal incision at the outflow tract of right ventricle in between the right coronary artery and its branch [LAD from RCA] revealed high far anterior aortic valve which had fibrous continuity with mitral annulus, and pulmonic valve was stenotic up to 4 mm in diameter positioned posterolaterally to the aorta. Ventricular septum was totally defective, and one markedly hypertrophied moderator band originated from crista supraventricularis was connected down to the imaginary septum of the ventricular cavity as a pseudoseptum of the ventricle. Size of the defect was 3X3 cm2 in total. Patch closure of the defect with a Teflon felt of 3.5 x 4 cm2 was done with interrupted multiple sutures after cut off of the moderator band, which was resutured to the artificial septum after reconstruction of the ventricular septum. Pulmonic valvotomy was done from 4 mm to 11 mm in diameter thru another pulmonary arteriotomy incision, and right ventriculotomy wound was closed reconstructing the right ventricular outflow tract with pericardial autograft of 3 x 4 cm2. Atrial septal defect of 2 cm in diameter was closed with 3-0 Erdeck suture, and atrial wall was sutured also when rectal temperature reached from 24`C to 35.5`C. Complete A-V block was managed with temporary external pacemaker with a pacing rate of 110/min. thru myocardial wire, and arterial blood pressure of 80/50 mmHg was maintained with Isuprel or Dopamine dripping under the CVP of 25-cm saline. Consciousness was recovered one hour after the operation when his blood pressure reached 100 /70 mmHg, but vital signs were not stable, and bleeding from the pericardial drainage and complete anuria were persisted until his heart could not capture the pacemaker impulse, and patient died of low output syndrome 320 min after the operation.

• 한국지역지리학회지
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• 제17권4호
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• pp.395-415
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• 2011

인구 고령화는 출생률과 사망률 저하에서 비롯된다. 급속한 고령화 사회는 노인의 빈곤과 역할 상실, 소외, 건강문제 등 다양한 사회 문제를 유발시킨다. 이러한 문제 해결에 있어서 중요한 것이 노인의 여가 선용이다. 노년기의 여가 활동은 정신적 육체적 건강을 유지 발전시키는 등 개인 욕구를 충족시키고, 노년기 삶의 질을 향상시키는 데 중요하다. 또한 사회적 친밀성을 형성하여 건강한 사회구조를 만드는데 이바지 한다. 하지만 이러한 긍정적 요소에도 불구하고 실제 노인 여가활동이 여러 요인들에 의해 잘 활성화 되지 못하고 있다. 이에 다양하게 표출되고 있는 노인 여가활동을 지리적으로 살펴볼 필요성이 있으며, 이 연구는 65세 이상 노인의 여가활동이 지역에 따라 어떤 특성과 차이를 보이는지를 분석해 보았다. 그 결과 서울은 타 지역에 비해 비교적 다양한 여가활동을 하며, 광주는 주로 집안에서, 고흥지역은 친목도모를 위한 여가활동에 주로 참여하고 있는 것으로 확인되었다. 여가활동 참여유형, 가정 내외의 여가활동 유형, 여가활동의 목적 및 만족도, 국내여행 빈도를 포함한 여가활동 등 많은 분야에서 지리적 특성에 따라 차이를 나타냈다.

• 한국치위생학회지
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• 제15권1호
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• pp.63-71
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• 2015

Objectives: The purpose of the study is to investigate the relationship between bone mineral density and remaining teeth in Korean adults. Methods: Using National Health and Nutrition Examination Survey(KNHANES) 5th Year 1(2010), 1,985 adults over 50 years old having bone mineral density test were selected. Male adults were 883, and female adults were 1,102. The raw data consisted of general characteristics of the subjects, bone density data, and oral examination data. The questionnaire consisted of general health survey, laboratory examination study, and nutrition study. Data were analyzed using SPSS 18.0 program for multiple regression analysis, ANOVA, t-test. The variables included general characteristics of the subjects, health behavior, diet habit, and oral health behavior. General characteristics consisted of gender, age, residence area, education level, marital status, monthly income, and vocation. Health behavior consisted of smoking, alcohol drinking, body mass index(BMI), physical activity, and mental health. Diet habit consisted of frequency of meal, milk, coffee, and calcium ingestion. Oral health behavior consisted of frequency of tooth brushing, use of oral health care devices, and oral examination. Systemic diseases were measured by the questionnaire for hypertension, diabetes mellitus, and hyperlipidemia. Bone density was measured in T-score of femoral bone, neck of femur, and lumbar vertebrae. Bone density was classified into normal($T-score{\geq}-1.0$), osteopenia(-2.5 < T-score < -1.0), and osteoporosis ($T-score{\leq}-2.5$). The remaining teeth were measured by the differences between normal teeth and missing teeth. Results: Smoking and age are the most influencing factors on the number of remaining teeth and bone density(p<0.01)(p<0.05). Those who had higher bone density, younger age, and nonsmoker significantly had more remaining teeth. Those who were men, diabetic, lowly educated women, and low birth weighted persons tended to have less number of teeth(p<0.01). Conclusions: The study suggested that there were significant differences between men and women according to the oral health management behavior and systemic disease control. Proper management of the oral health and good quality of bone mineral density can reserve the remaining teeth through the whole life.