• Clinical and Experimental Pediatrics
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• v.52 no.10
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• pp.1171-1174
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• 2009

Edwards syndrome, also called trisomy 18, is one of the most common autosomal anomalies. The survival rate of patients with Edwards syndrome is very low and its characteristic findings include cardiac malformations, mental retardation, growth retardation, specific craniofacial anomalies, clenched hands, rocker-bottom feet, and omphalocele. Compared with the classic Edwards syndrome, the symptom of partial duplication of chromosome 18 is relatively mild with a good prognosis. We report the case of a baby with partial duplication 18q11.2-q12. The characteristic phenotype features of Edwards syndrome were observed in the patient. However, the symptom was milder than the typical Edwards syndrome. At present, we can expect better prognosis for this patient.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.4
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• pp.713-717
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• 2008

Albinism is a disease caused by partial or complete failure of melanin production in the skin, hair and eyes despite the presence of normal number, structure and distribution of melanocytes. Typical aspects are white-colored skin, blonde-brown hair, blue-brown irides and a prominent red reflex. Three main categories of albinism are oculocutaneous, ocular and localized albinism, and also they are divided into many subgroups. Therefore, appropriate treatment plan and dental direction would be differentiated according to them. This case report was about oral conditions and treatment of the oculocutaneous albinism patient with mental retardation who was refered due to developmental delay of teeth and treated with teeth extraction, restoration and space maintenance etc.

• Journal of Sericultural and Entomological Science
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• v.36 no.1
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• pp.69-75
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• 1994

Through the histological and anatomical investigation of silkworm gonad, N. bombycis infection was found to begin from the peripheral region of ovarial sheath or testicular sheath, then, the pathogens spread to the inner portion. Peroral inoculation with purified spores of N. bombycis to 2nd instar larvae at dosages around 106-8/㎤ of artificial diet resulted in the extremely extended larval survival as long as 15 to 22 days of 4th instar. The growth of ovarioles was confirmed in the 10 to 14 day old larvae, oogonia developed into oocytes and nurse cell against heavy infection of the ovary. Gonads rarely obstructed oogenesis and spermatogenesis in the pupae failed in adult eclosion. Light infection of female hosts effected insignificantly on the ovarial development, however, recorded 100% transmission of the pathogens to the progeny populations. Conclusively, ovarial inflection of silkworm induce transovarial transmission begins around 2~3 day old pupae when ovarioles extruded out to hemocoel, and the infection period thought to be continued until the stage of eggs complete shell formation in the ovariole.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.3
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• pp.334-339
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• 1995

Removal of apical ear after silking is a method to increase seed production in corn inbreds. Due to the phenomenon of apical dominance, the subapical ear would develope and produce seeds following the removal of the apical ear. This experiment was conducted to investigate the varietal difference in subapical ear development and seed production. Days to silking of subapical ears were delayed by about 4 days compared to normal apical ears. Cob length and filled ear length of subapical ears across seven inbreds tested were reduced by 21% and 36%, respectively. Those of inbred INV302 decreased less and subapical ear of inbred NC246 were barren, which incicated the varietal defferences. Number of kernel rows, kernels per row, and total kernels per ear also decreased. The mean reduction rates for those characters were 28%, 37%, and 47%, respectively. Weights of ears and kernels were reduced and showed different response among inbred lines. Coefficients of variations for cob and filled ear lengths, number of kernel rows and kernels were greater in subapical ears than in apical ears. Seed production of subapical ears was 40 ~ 80% of apical ears, depending on inbred lines when the apical ear is removed immediately after silking.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.7 no.2
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• pp.123-126
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• 2011

Noonan syndrome (NS) is a developmental disorder characterized by dysmorphic facial features in association with short stature, mental retardation and congenital heart disease. NS may be sporadic or inherited as an autosomal dominant or recessive trait. The children with NS usually have ocular hypertelorism, downslanting palpebral fissures, low-set ears and a webbed neck, chest deformity. In addition, oral features include micrognathia, high arched palate, dental malocclusion, dental anomalies and rarely, cleft palate. The phenotype of NS bears similarities to that of Turner syndrome. However, NS occurs in both males and females with a normal sex chromosome 46, XX and 46, XY constitution. This case presents the intermittent treatment of an 8-year-old girl who was referred from a local clinic for the extraction of supernumerary teeth and treatment of dental caries. The focus of this case report is the oral aspects on NS and particularities of the dental treatment in subjects affected by this genetic disease.

• Korean journal of applied entomology
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• v.22 no.4 s.57
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• pp.262-270
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• 1983

The newly hatched nymphs of brown planthopper(BPH) were reared individually for two generations in test tubes, where young rice seedling was planted on agar solution, at $30^{\circ}C,\;25^{\circ}C\;and\;20^{\circ}C\;with\;95\%,\;75\%,\;65\%\;and\;35\%$ R.H. Effects of $30^{\circ}C$ on the development of BPH when compared with those of $25^{\circ}C$ are followings. Egg period, nymphal period, and adult longevity were shortened. Nymphal mortality was increased and the number of oviposited eggs was decreased. Hatchability was zero per cent because the eggs were either unfertilized or died before finishing the development. At the low temperature of $20^{\circ}C$, in comparision with $25^{\circ}C$, the developmental period of nymphs and eggs was considerably lengthened, and adult longevity was shortened, the number of oviposited eggs was decreased. The nymphal mortality was higher at high relative humidity $(above\;75\%\;RH)$ than that at low relative humidity $(under\;65\%\;RH)$. Under the condition of high relative humidities, the adult longevity was shortened, and the number of oviposited eggs was decreased.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.15 no.1
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• pp.89-93
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• 2019

Preterm infants have higher possibility of undergoing endotracheal intubation after birth than normal children due to medical conditions. Developmental disturbances of primary incisors following intubation can occur as crown malformation, enamel defects, delayed eruption, displacement of dental follicle in crypt, groove formation of palate or alveolar ridge, acquired cleft palate, and dental arch distortion. This clinical report presents the effect of intubation on primary dentition of preterm infants. A 2-year-old girl with cerebral palsy and premature birth history visited our clinic with chief complaint of unerupted primary upper incisor. A 1-year-old boy with cerebral palsy, status epilepticus and premature birth history visited our clinic due to crown malformation. Developmental disturbances of primary incisors in these cases were not related to the patients' systemic disease, and there were no history of dental trauma. A long term endotracheal intubation prior to tooth eruption might have caused local trauma on alveolar ridge. It is very important to monitor dental problems of preterm infants who had experienced endotracheal intubation during neonatal period. Due to influences on both primary and permanent teeth, periodic re-evaluation of affected areas and establishment of comprehensive treatment plans are necessary.

• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.3
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• pp.486-491
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• 1999

Hypoparathyroidism has abnormally decreased secretion of parathyroid hormon which responds to the blood calcium level. Wherease, Pseudohypoparathyroidism has normal activity of thyroid hormon, but end-organs, such as urinary tract and osteoclast, do not respond to parathyroid hormon. The cause of this disease is due to the mutation of Guanine stimulating(Gs) protein regulating Gs gene, which is the receptor to this hormon. Pseudohypoparathyroidism is usually noted before 20 years old on average of 8-9 years old. The clinical features of this disease includes delayed growth and development, round face, obesity, soft tissue calcification, ectopic ossification, shortening of metacarpals and metatarsals by epiphyseal closure in advance of age. The mutation of Gs gene which are found in brain, endocrine organs, and chondrocytes is the cause of those features. Reaction to Glucagon, gonadal hormon, and thyroid stimulating hormon is not expected in both cases. The common dental manifestations include enamel hypoplasia, delayed eruption, agenesis of tooth, hypodontia, dysplastic short roots, widened pulpal space, microdontia, intrapulpal calcification, and malocclusion are also often reported. This case which is diagnosed to Pseudohypoparathyroidism showed short and under-developed root of permanent troth, delayed eruption, and non-eruption of premolars and molars. And morphogenesis imperfecta of first and second premolars were also found.

• Science of Emotion and Sensibility
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• v.3 no.2
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• pp.75-84
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• 2000

문명의 발달과 함께 수면부족으로 인한 여러 가지 스트레스와 질환이 증가하게 되어 최근 수면연구에 대한 관심이 증가하고 있다. 본 연구는 다양한 온열환경 조건에서의 쾌적한 수면을 위한 온열환경을 제시하기 위해, 5명의 여성 피험자를 대상으로 22$^{\circ}C$, 26$^{\circ}C$, 3$0^{\circ}C$의 일정온도 조건과 $25^{\circ}C$에서 1시간 후와 2시간 후에 각각 1, 2$^{\circ}C$를 상승시켜주는 변동온도 조건하에서 수면생리신호를 측정하였다. 그리고, 수면단계 평가를 이용하여 총 수면시간, 깊은 수면의 비율, 그리고 최초 수면시작 시간에서 최초의 서파 수면이 나타나기까지의 지연시간 등의 수면효율을 평가하였다. 그 결과, 일정온도 조건에서는 26$^{\circ}C$에서 총 수면시간(466.7$\pm$10.25분)과 깊은 수면의 비율(33.1$\pm$4.95%)은 타 조건에 비해 높게 나타났고, 최초 서파수면까지의 지연시간(9.8$\pm$3.33분)은 타 조건에 비해 낮게 나타나 쾌적한 수면을 위한 가장 적절한 온열조건임을 관찰할 수 있었다. 그리고 변동온도 조건에서는 4가지 온열조건간에는 큰 차이가 나타나지 않았지만, 모든 조건에서 일정온도 조건보다는 좋은 결과를 나타내었다. 또한 수면 중 신체 움직임과 설문 분석에서도 동일한 결과를 보였다. 본 연구를 통해, 수면생리신호를 이용한 수면 쾌적성 분석은 수면의 질적인 상태를 관찰하는데 매우 적합한 파라메터를 도출할 수 있으며, 여러 가지 수면환경 조건을 평가하는데 매우 유용한 지표가 될 수 있음을 보였다.e results suggest that hCG treatment at 7 days after insemination could be used to increase the pregnancy rate of embryo transfer, and transfer, and only the recipients with PUN concentration of <12 mg/dl were influenced by treatment with hCG./TEX>이었으며, 이는 화성 기원을 지시한다.sucrose를 이용한 2단계 희석이 수정란의 생존성을 향상시키는 것으로 나타났다. 또한 발육 단계별 생존성에 있어서는 발육이 진전된 확장배 반포 시에 동결하는 것이 배반포기에 동결하는 것 보다 유리한 것으로 나타났다.ody를 사용하여 flow cytometery해석을 실시하는 한편 125I-hGH binding assay에 의하여 hGH binding activity를 측정하였다. 최종적으로 GH signal transduction의 target genedf으로 알려져 있는 serine protease inhibitor 2.1(Spi 2.1) gene의 promotor activity를 검토한 결과 hGHR을 transfect한 CHO Cell에 있어서 hGH의 농도에 의존적으로 증가되었다. 따라서 본 실험에서 cloning한 cDNA hGHR는 native hGHR와 같은 기능을 가지는 것으로 판명되었다.것으로 판명되었다..ments of that period left both in Japan and Korea. "Hyojedo" in Korea is supposed to have been influenced by the letter design. Asite- is also considered to

• Journal of the korean academy of Pediatric Dentistry
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• v.27 no.3
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• pp.394-399
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• 2000

Odontoma is defined as a benign odontogenic tumor containing enmel, dentin as well as cementum. It has come to mean a growth in which both the epithelial and the mesenchymal cells exhibit complete differentiation. Most authorities accept the view today that the odontoma represents a hamartomatous malformation rather than a true neoplasm. The etiology of odontomas is uncertain but hypothesized to involve local trauma, infection, inheritance or mutant gene. The odontomas often cause various disturbances in the eruption and position of the teeth. The steps in removal of an odontoma in close relation to an adjacent impacted normal tooth should comprise 1) removal of odontoma and 2) exposure of the impacted tooth. Orthodontic therapy may be applied. Before treatment, the necessary space for the impacted tooth should be evaluated. If there is lack of space in the dental arch, orthodontic treatment should be carried out before operation.