• Title/Summary/Keyword: human tissue

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Diagnosis and treatment of positional plagiocephaly

  • Jung, Bok Ki;Yun, In Sik
    • 대한두개안면성형외과학회지
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    • 제21권2호
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    • pp.80-86
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    • 2020
  • Positional plagiocephaly is increasing in infants. Positional plagiocephaly is an asymmetric deformation of skull due to various reasons; first birth, assisted labor, multiple pregnancy, prematurity, congenital muscular torticollis and position of head. Positional plagiocephaly can mostly be diagnosed clinically and by physical examinations. The simplest way to assess the severity of plagiocephaly is to use a diagonal caliper during physical examination, which measures the difference between the diagonal lengths on each side of the head. Plagiocephaly can be treated surgically or conservatively. Positional plagiocephaly, which is not accompanied by craniosynostosis, is treated conservatively. Conservative treatments involve a variety of treatments, such as change of positions, physiotherapy, massage therapy, and helmet therapy. Systematic approaches to clinical examination, diagnosis and treatment of positional plagiocephaly can be necessary and the age-appropriate treatment is recommended for patients with positional plagiocephaly.

두툽상어 연골 조직에서 생리 활성 유전자들의 cDNA 클로닝 (Cloning of various bioreactive genes from cartilage tissues of Scyliorhinus torazame)

  • 김지태;김명순;장은령;김영진;김규원
    • 생명과학회지
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    • 제10권5호
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    • pp.533-541
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    • 2000
  • Compared to mammal including human, many bioreactive genes that regulate various biological events has not been cloned and characterized yet in fishes, especially shark, Scyliorhinus torazame. In orther to isolate genes that regulate physiological processes in cartilaginors fishes, we performed reverse transcription-polymerase chain reaction (RT-PCR) using the RNA of cartilage tissues of Scyliofhinus torazame. The cloned partial genes were 86%, 80%, 73%, 84%, 75%, 79% identical to $\alpha$- actin, 90-kDa heat-shock protein, methyle-neterahydrofolate dehydrogenase-methenyltertrahydrofolate cyclohudrolase-formyltetrahydrofolate synthetase, ubiquitin, glutamine synthetase and connective tissue growth factor genes of human, respectively. They also have similar nucleotide sequence homologues with those of another species. These partial bioreactive genes elucidated in this study may support to studies of phylogenetic analysis based on evolutionary relationships between shark and other species.

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Heterogeneity of IL-22-producing Lymphoid Tissue Inducer-like Cells in Human and Mouse

  • Kim, Soochan;Han, Sinsuk;Kim, Mi-Yeon
    • IMMUNE NETWORK
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    • 제10권4호
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    • pp.115-119
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    • 2010
  • Lymphoid tissue inducer (LTi) cells have been characterized in mouse as a key cell when secondary lymphoid tissues are organized during development and memory T cells are formed after birth. In addition to their involvement in adaptive immune responses, recent studies show that they contribute to innate immune responses by producing large amount of interleukin (IL)-22 against microbial attack. Here, we compare IL-22-producing LTi and LTi-like cells in human and mouse and discuss their heterogeneity in different tissues.

Fluorescently Labeled Nanoparticles Enable the Detection of Stem Cell-Derived Hepatocytes

  • Ha, Young-Eun;Shin, Jin-Sup;Lee, Dong-Yun;Rhim, Tai-Youn
    • Bulletin of the Korean Chemical Society
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    • 제33권6호
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    • pp.1983-1988
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    • 2012
  • Stem cell transplantation is emerging as a possible new treatment for liver cirrhosis, and recent animal studies have documented the benefits of stem cell therapy in a hepatic fibrosis model. However, the underlying mechanism of stem cell therapy is still unclear. Among the proposed mechanisms, the cell replacement mechanism is the oldest and most important, in which permanently damaged tissue can be replaced by normal tissue to restore function. In the present study, Cy5.5-labeled superparamagnetic iron oxide (SPIO) was used to label human mesenchymal stem cells. The uptake of fluorescently labeled nanoparticles enabled the detection and monitoring of the transplanted stem cells; therefore, we confirmed the direct incorporation and differentiation of SPIO into the hepatocyte-like transplanted stem cells by detecting human tyrosine aminotransferase (TAT), well-known enzymatic marker for hepatocyte-specific differentiation.

악관절도판의 증영적 변화에 관한 병리조직학적 연구 (HISTOPATHOLOGICAL STUDIES ON THE ARTICULAR DISC OF THE HUMAN TEMPOROMANDIBULAR JOINT BY AGING)

  • 박진환
    • 대한치과의사협회지
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    • 제9권10호
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    • pp.611-615
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    • 1971
  • The articular discs from temporomandibular joints of thirty men and women whose ages ranged between 20 and 70 years hve been used in this study. The articular discs of the temporomandibular joints of human postmortem material was examined individually by means of microscopic techniques. The following changes were seen: 1. With advancing age some of fibroblast was developed into chondroid cells. Which later may differentiate into true chondrocytes. 2. In young individuals the elastic fibers found only I relatively small numbers. With advancing age elastic fibers was increased in number. 3. With advancing age the arrangement of fibrous tissue are irregular and loosely separated. 4. In the discs, as well as in the fibrous tissue covering the articular surfaces, this cellular changes seems to be dependent upon mechanical influences.

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Late reconstruction of post-traumatic enophthalmos and hypoglobus using three-dimensional implants: a case series

  • Choi, Jae Hyeok;Baek, Wooyeol
    • 대한두개안면성형외과학회지
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    • 제23권5호
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    • pp.232-236
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    • 2022
  • Post-traumatic enophthalmos and hypoglobus are common sequelae of facial bone fractures, even after reduction surgery. They are associated with functional and esthetic issues, which may lower the quality of life. These deformities frequently present late, and adequate correction is difficult. We report three cases of late inferior orbital rim reconstructions with three-dimensional printed implants to help resolve these problems. The average duration between the traumatic event and surgery was 3 years and 4 months. One patient was treated with a completely absorbable implant and exhibited satisfactory results until the implant started to biodegrade at 1 year and 9 months after surgery. Two patients were treated with a permanent implant and demonstrated satisfactory results. However, longer follow-up periods were needed. There were no complications such as infection, diplopia, or restriction of ocular motion and the patients were satisfied with the esthetic results.

심장 부정맥 시 vortex breakup 현상에 대한 수치적 연구 (Computational analysis of vortex breakup in arrhythmias)

  • 심은보;권순성;최승윤
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 2008년도 춘계학술대회논문집
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    • pp.496-497
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    • 2008
  • In this study, we present the computational analysis of cardiac arrhythmias that is the major cause of human sudden cardiac death. First, electric excitation and condution in one dimensional cardiac tissue model is solved and the results on condution block are represented. In two dimensional model, vortex daynamics in cardiac tissue is analyzed to delineate the breakup phenomenon inducing ventricular fibrillation. We also simulated a three dimenional heart model to see the vortex breakup and explained the mechanism in physiological aspect.

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PCBS IN KOREAN ADIPOSE TISSUE AND THEIR ENDOCRINE DISRUPTING EFFECTS

  • Kim, Dae-Hyun;Oh, Seung-Min;Ham, Byung-Woo;Chung, Kyu-Hyuck
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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    • pp.177-177
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    • 2001
  • Polychlorinated biphenyls(PCBs) are members of the halogenated aromatic group of environmental pollutants. Because of their unique physical and chemical properties, notably their stability and widespread use, PCBs are sidely distributed and transported throughout the global environment. In fact, residues of PCBs have been identified in air, water, aquatic and marine sediments, and human tissue samples.(omitted)

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