• Title/Summary/Keyword: tropism

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Reconstruction of a long defect of the median nerve with a free nerve conduit flap

  • Campodonico, Andrea;Pangrazi, Pier Paolo;De Francesco, Francesco;Riccio, Michele
    • Archives of Plastic Surgery
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    • v.47 no.2
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    • pp.187-193
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    • 2020
  • Upper limb nerve damage is a common condition, and evidence suggests that functional recovery may be limited following peripheral nerve repair in cases of delayed reconstruction or reconstruction of long nerve defects. A 26-year-old man presented with traumatic injury from a wide, blunt wound of the right forearm caused by broken glass, with soft tissue loss, complete transection of the radial and ulnar arteries, and a large median nerve gap. The patient underwent debridement and subsequent surgery with a microsurgical free radial fasciocutaneous flap to provide a direct blood supply to the hand; the cephalic vein within the flap was employed as a venous vascularized chamber to wrap the sural nerve graft and to repair the wide gap (14 cm) in the median nerve. During the postoperative period, the patient followed an intensive rehabilitation program and was monitored for functional performance over 5 years of follow-up. Our assessment demonstrated skin tropism and sufficient muscle power to act against strong resistance (M5) in the muscles previously affected by paralysis, as well as a good localization of stimuli in the median nerve region and an imperfect recovery of two-point discrimination (S3+). We propose a novel and efficient procedure to repair >10-cm peripheral nerve gap injuries related to upper limb trauma.

Histopathologic Characterization of Viral Pathogens in Cultured Olive Flounder, Paralichthys Olivaceus, using in-situ Hybridization Methods (In-situ hybridization 법을 사용한 양식 넙치, Paralichthys olivaceus의 바이러스 감염 질병 특성 고찰)

  • Do, Jeong Wan;Lee, Nam-Sil;Jung, Sung Hee;Kim, Kyung-Kil;Choi, Hye Sung;Park, Jeong Woo;Kim, Yi Cheong
    • Journal of fish pathology
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    • v.26 no.3
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    • pp.163-171
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    • 2013
  • Polymerase chain reaction (PCR) is the most rapid and widely used method to detect viral pathogens. However, this method does not provide histopathologic nature of the virus. In situ hybridization (ISH) with oligonucleotide probes is attractive because it is a rapid method for detection and identification of viral pathogens at sites of tissue infection. In order to understand the histopathologic characterictics of Red sea bream iridovirus (RSIV), viral-hemorrhagic septicemia (VHS) virus and viral nervous necrosis (VNN) virus to cultured olive flounder, we her applied ISH method to various kinds of olive flounder tissues with PCR-positive for these three viruses. We found that these viruses showed different tissue tropism and were detected from different cell types. Our results suggest that ISH is useful not only in rapid detection of viral pathogens but also in understanding the histopathologic characters of specific viral pathogens.

A Study on Application of Korean Medical Prescriptions Theory in Developing Transdermal Medicine and Korean Medical Cosmetic Preparation Using Oral Herbal Medicine (경구 처방의 경피용 제제 및 한방 화장품 소재 개발 시의 방제이론 적용에 관한 연구)

  • Kim, Dong-Il;Kim, Su-Hyun;Choi, Min-Sun;Park, Sun-Dong
    • The Journal of Korean Obstetrics and Gynecology
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    • v.28 no.3
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    • pp.74-86
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    • 2015
  • Objectives To identify whether Sovereign-Minister-Assistant-Courier (君臣佐使) Theory and Meridian Tropism (歸經) Theory of oral herbal medicine can be applied to trans-dermal medicine and whether pharmaceutical efficacy can be delivered to skin by Courier herb (使藥). Methods We reviewed previous studies related to Sovereign-Minister-Assistant-Courier Theory. And we examined whether prescription compositions based on Sovereign-Minister-Assistant-Courier Theory correspond with efficacy results of trans-dermal medicine experimentally identified. Results When Sovereign-Minister-Assistant-Courier Theory is applied to trans-dermal medicine, Courier herb act as delivering the effective components to the lesion penetrating skin barrier. And we identified that medicine absorbed through the digestive processes may not correspond with Courier herb applied topically. Conclusions We identified that Courier herb act as delivering the effective components to the lesion. But to strength evidences, additional studies on this action will be needed.

A Herbological Study on the plants of Convolvulaceae in the Korean (한국산 메꽃과 식물에 관한 본초학적 연구)

  • Jeong, Jae-Hoon;Jeong, Jong-Gil
    • The Korea Journal of Herbology
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    • v.36 no.5
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    • pp.47-57
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    • 2021
  • Objective : For the purpose of developing Convoivulaceae plants recorded in Korean Herbology in Korea, the literatures of the successive generations have been thoroughly investigated to prepare this article. Methods : Books and research papers about Herbology which published at Korea and other countries were examined. Results : A list was made about Convoivulaceae plant which were cultivated or grew naturally in Korea, after investigated the data on domestic and foreign Convoivulaceae plants. Convoivulaceae(grew in Korea) were divided into 6 classes with 18 species. Out of those, 6 classes with 13 species were found serviceable which indicates approximately 72% of all. Out of all 18 species of Convoivulaceae family, Calystegia genus were found 6 species, which were shown the most. Among 4 genus of Calystegia species, medicinal plants were all one species each. Out of all serviceable parts in Convoivulaceae, Herb·Radix·Tuber·Semen·Flower·Stem and Folium parts took first place as 8 species. There are 2 species toxic, the survey said. 6 Classifying medicinal plants among the Convoivulaceae plants by part, whole Herbs are found to be 8 separate species each. When it comes to the nature of taste, 10 kinds of taste without action and 7 kinds of sweet taste are the most common. For channel tropism, kidney channel has the largest number of 7 types. Conclusion : A total of 6 genera and 18 species of Convoivulaceae was found in the Korean among which 6 genera and 13 species(approximately 72%) were medicinal plants. Two species toxic drugs were detected.

A Comparative Study on the Effectiveness of Mahuang and Shigao - Focusing on Their Similarity - (마황(麻黃)과 석고(石膏)의 효능(效能)에 대한 비교(比較) 연구(硏究) – 상호(相互) 유사성(類似性)을 중심(中心)으로 -)

  • Ahn Jinhee;Kim Sang-hyun;Kim Jong-hyun
    • Journal of Korean Medical classics
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    • v.37 no.1
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    • pp.1-24
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    • 2024
  • Objectives : The objective of this study is to compare the properties of Mahuang and Shigao based on their similar effects and how they are manifested in formulas that include these medicinals. Methods : Descriptions of Mahuang and Shigao as written in the Shennongbencaojing, Mingyibielu, Bencaogangmu, Benjingshuzheng were analyzed to determine their similar traits. Formulas in which these medicinals were both used for their similar effects were analyzed. Results & Conclusions : Mahuang and Shigao, through their interaction, both communicate fluids, relieve stagnation, and draw out heat or Yang qi from the Yin part. These similarities influence each other, which is related to their common meridian tropism, the Lung Channel, to diffuse, purify and descend. The ten formulas that include the two medicinals were similar in that Yin and Yang were interactive. Of these, those that relieved stagnation were Maxingganshitang and Daqinglongtang. Those which communicated fluids and relieved stagnation were Yuebitang, Yuebijiabanxiatang, Yuebijiashutang, Xiaoqinglongjiashigaotang, Houpumahuangtang, and Wengetang. Those that drew out heat or Yang qi from the Yin part through interaction between Yin and Yang were Guizhieryuebiyitang and Mahuangshengmatang. Previous studies stated that Mahuang and Shigao are different and using both medicinals in the same formula would repress each other or balance each other out-this study focused on their common properties which resulted in the above-mentioned findings.

Enhancement of Adenoviral Transduction and Immunogenecity of Transgenes by Soluble Coxsackie and Adenovirus Receptor-TAT Fusion Protein on Dendritic Cells

  • Kim, Hye-Sung;Park, Mi-Young;Park, Jung-Sun;Kim, Chang-Hyun;Kim, Sung-Guh;Oh, Seong-Taek;Kim, Tai-Gyu
    • IMMUNE NETWORK
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    • v.6 no.4
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    • pp.192-198
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    • 2006
  • Background: Investigating strategy to enhance efficiency of gene transfer via adenovirus is critical to sustain gene expression in targeted cells or tissues to regulate immune responses. However, the use of adenovirus as a gene delivery method has been limited by the native tropism of the virus. In this study, the critical parameter is to improve the efficient binding of viral particles to the plasma membrane prior to cellular uptake. Methods: Human immunodeficiency virus (HIV-1) trans-acting activator of transcription (TAT), a protein transduction domain, was fused to the ectodomain of the coxsackie-adenovirus receptor (CAR). The CAR-TAT protein was produced from a Drosophila Schneider 2 cells (S2) transfected with CAR-TAT genes. The function of CARTAT was analyzed the efficiency of adenoviral gene transfer by flow cytometry, and then immunizing AdVGFP with CAR-TAT was transduced on dendritic cells (DCs). Results: S2 transfectants secreting CAR-TAT fusion protein has been stable over a period of 6 months and its expression was verified by western blot. Addition of CAR-TAT induced higher transduction efficiency for AdVGFP at every MOI tested. When mice were vaccinated with DC of which adenoviral transduction was mediated by CAR-TAT, the number of IFN-${\gamma}$ secreting T-cells was increased as compared with those DCs transduced without CAR-TAT. Conclusion: Our data provide evidence that CAR-TAT fusion protein enhances adenoviral transduction and immunogenecity of transgenes on DCs and may influence on the development of adenoviral-mediated anti-tumor immunotherapy.

Genome Type Analysis of Human Adenoviruses Associated with Pediatric Gastroenteritis in Korea (소아장염을 유발하는 한국형 아데노바이러스들의 지놈형별)

  • Kim, Hee-Jin;Yang, Jai-Myung;Kim, Kyung-Hee
    • The Journal of Korean Society of Virology
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    • v.26 no.1
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    • pp.23-30
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    • 1996
  • 대략 36,000 base pairs (bp)의 두 가닥짜리 DNA를 지놈으로 가진 사람 아데노바이러스 (Ad)는 DNA 상동성(相同性) 및 생물학적/생화학적 성격이 특이한 49개의 혈청형이 알려져 있는데, 이들 대부분의 Ad가 영유아군 및 면역능이 저하된 성인에서 치사적 결과를 초래할 수 있다. Ad의 세포향성(向性)(tropism)은 매우 다양하여 종류에 따라 상기도 감염, 각결막염, 영유아 장염등을 유발하는데 최근 Ad의 다양한 병원성에 대한 원인을 분자생물학적 수준에서 규명하려는 노력의 일환으로 지역에 따라 주되게 출현하는 Ad형 규명이 활발히 이루어지고 있다. Ad 동정/확인은 표면을 이루고 있는 group 공통항원인 hexon 단백질을 탐지하는 효소면역 측정법 (EIA)에 의하며, Ad형별은 Ad fiber의 세포독성 중화시험에의 한다. 그러나, 세포독성 중화시험이 엄청난 노동력 및 시간을 요구하면서도 민감도/특이도가 만족스럽지 못하여 이를 개선하기 위하여 검체 또는 세포배양에서 Ad DNA를 추출하여 제한효소 절단형태를 비교하는 방법이 개발되었는데 이는 세포배양에 잘 자라지 않는 바이러스주의 형별뿐만 아니라 지역 분리주들의 지놈 변형주를 관찰하는 분자생물학적/분자역학적 연구에도 도움이 되고 있다. 국내에는 Ad와 관련된 소아장염의 빈도가 rotavirus에 의한 것 다음으로 빈번한데도 Ad40/41외에 주되게 출현하는 장내 Ad형들이 전혀 규명된 바 없고, 한국형 Ad들의 지놈형태가 전혀 보고된 바가 없다. 또한 세계적으로 Ad형별 조사지역이 늘어감에 따라 유아장염과 연관된 Ad 역시 Ad40, 41이 외의 형들이 Ad40, 41을 능가하는 것으로 보고되고 있는 지역도 있으나 국내에서는 Ad40, 41이외의 형들은 그 역학적 중요도가 전혀 알려져 있지 않다. 이로서 본 연구의 목적은 Ad주들에 특이 중화항체를 이용한 세포독성 중화시험과 Ad DNA 절단법을 적용하여 한국형 장내 Ad주들의 형별을 처음으로 시도함과 동시에 1989-1991사이 출현한 Ad들의 유전적 변형을 관찰하려는 것이었다. 두 방법 모두 사용하였을 때 주되게 출현하는 장내 Ad형들은 Ad4l, Ad2, Ad7, Ad5, 및 Ad40이었다. Ad40/41-양성 검체를 제외한 Ad hexon-EIA양성들의 77.5%를 형별 할 수 있었던 Ad DNA의 제한효소 절단방법은 형들간의 교차중화로 특이성이 낮았던 중화방법 (47.5%)보다 매우 효율적이어서 두 가지 방법을 함께 적응하였을 때는 40주중의 81.5%인 35주를 형별 할 수 있었다. 또한Ad DNA 제한 효소 절단방법은 Ad7 변이주 (Ad7b)도 탐지 할 수 있었다.

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Morphometrical analysis of chicken Cryptosporidium on electron microscopy (닭 크립토스포리디움의 형태계측을 위한 전자현미경적 연구)

  • Park, Nam-yong;Kim, Young-seop;Chung, Chi-young;Cho, Kyoung-oh;Park, Young-seok;Lee, Bong-joo;Park, Hyung-seon
    • Korean Journal of Veterinary Research
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    • v.39 no.3
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    • pp.575-582
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    • 1999
  • Morphometrical analysis of chicken Cryptosporidium baileyi in various stages of life cycle in the bursa of Fabricius were carried out by electron microscope to establish a differential point for identification of C baileyi. By avidin-biotin complex method, protozoans of the bursa of Fabricius were identified Cryptosporidium spp. The size and area on each developmental stages of C baileyi, as measured by Morphomat 10 attached to electron microscope were as follows. Trophozoites' size with range of $3.21{\pm}0.70{\times}2.49{\pm}0.59{\mu}m$, area with range of $118.82{\pm}41.92{\mu}m^2$; meronts' size $3.99{\pm}1.07{\times}2.96{\pm}0.52{\mu}m$, area $210.11{\pm}57.11{\mu}m^2$; merozoites' size $1.98{\pm}0.43{\times}0.60{\pm}0.18{\mu}m$, area $24.10{\pm}5.97{\mu}m^2$; microgametes' size $1.36{\pm}0.83{\times}0.50{\pm}0.23{\mu}m$, area $20.23{\pm}6.73{\mu}m^2$; macrogametes' size $4.57{\pm}0.65{\times}4.02{\pm}0.55{\mu}m$, area $258.37{\pm}51.83{\mu}m^2$; oocytes' size $4.39{\pm}0.56{\times}3.44{\pm}0.50{\mu}m$, area $187.21{\pm}62.68{\mu}m^2$. In conclusion, the size and area on each developmental stages of Cryptosporidium baileyi is different from that of other Gryptosporidia spp. It suggests, with considering tissue tropism and life cycle, morphometrical analysis can be quite a good way to identify C baileyi.

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