• 제목/요약/키워드: GI tract

검색결과 186건 처리시간 0.026초

Effects of Chitosan Coating for Liposomes as an Oral Carrier

  • Lee, Chang-Moon;Kim, Dong-Woon;Lee, Ki-Young
    • 대한의생명과학회지
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    • 제17권3호
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    • pp.211-216
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    • 2011
  • The chitosan-coated liposomes (chitosomes) were designed to improve the stability in the gastrointestinal (GI) tract and to enhance the efficacy for oral drug delivery of liposomes. The phosphatic acid (PA)-incorporated anionic liposomes were surface-coated with water soluble chitosan (WSC) by electro-ionic interaction. The shape of the chitosomes observed by transmission electron microscopy (TEM) was spherical in all the formulations and the coating layer by WSC could be founded through TEM images. The mean size and the zeta potential values of the chitosomes increased significantly with depending on the content of WSC added for coating the liposomes. The stability of the chitosomes in the GI tract was confirmed through the change of relative turbidity of the liposomal suspension. The plain liposomes (plasomes) suspension without adding WSC clearly showed the change of relatively turbidity in simulated gastric fluid (SGF), while the change degree of turbidity of the chitosomes in the SGF decreased as increasing of WSC content added for coating liposome. In the 5-CF release study from the plasomes and chitosomes, the plasomes released >90% of the initial 5-CF content at 4 h of release measurement. In contrast, the chitosomes released below 40% of initial content of 5-CF. In conclusion, these results indicate that the chitosomes can be used as a potential carrier for effective oral drug delivery.

Skin Graft-versus-host Disease Following Autologous Stem Cell Transplantation for Multiple Myeloma

  • Lee, Sung-Eun;Yoon, Jae-Ho;Shin, Seung-Hwan;Park, Gyeongsin;Min, Chang-Ki
    • IMMUNE NETWORK
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    • 제13권3호
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    • pp.107-110
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    • 2013
  • Graft-versus-host disease (GVHD) is a common complication of allogeneic stem cell transplantation (allo-SCT). However, a similar syndrome has been reported in autologous stem cell transplantation (ASCT) as well. The target organs of GVHD in ASCT are the skin, liver and gastrointestinal (GI) tract, which are consistent with those in allo-SCT. Histologic findings from the skin and the mucosa of the GI tract also show similar features. Here we describe a case of autologous GVHD involving the skin of a patient who underwent ASCT for multiple myeloma. In this patient, the response to a total prednisone dose of 0.5 mg/kg/day was unsatisfactory, and the patient required more intensive and prolonged immunosuppressive therapy with slow tapering.

Blue Rubber Bleb Nevus Syndrome 1예 (A Case of Blue Rubber Bleb Nevus Syndrome)

  • 강기수;오현주;고재성;서정기;박귀원;강경훈;김우선
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제11권2호
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    • pp.198-203
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    • 2008
  • 저자들은 만성적인 철결핍성 빈혈을 보이는 10세 여아에서, 캡슐내시경을 비롯한 내시경적 검사로 위장관계의 다발성 정맥기형을 발견하여 blue rubber bleb nevus syndrome으로 진단하였고, 광범위한 외과적 절제술로 성공적으로 치료하였기에 이에 보고하는 바이다.

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Chongkukjang Mucilage Stimulates Immunohistochemical Activities of Gastrointestinal Tract in Rats

  • Lee, Chang-Hyun;Yang, Eun-In;Song, Geun-Seoup;Chai, Ok-Hee;Kim, Young-Soo
    • Food Science and Biotechnology
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    • 제14권6호
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    • pp.813-817
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    • 2005
  • We investigated the effect of a viscous substance from chongkukjang (chongkukjang mucilage) on immunohistochemical reactions in rat gastrointestinal (GI) tracts, Rats fed a steady diet of chongkukjang mucilage showed an increase in the immunoreactive densities of gastrin and serotonin in the pyloric region of their stomachs and duodenal villi, The number of gastrin and serotonin immunoreactive cells was significantly higher in the experimental group than in the control group. Feeding on dietary chongkukjang mucilage increased the immunohistochemical densities of $CD4^+$ and $CD8^+$ lymphocytes in the mucosa and submucosa of the rats' gastroduodenal region. The universal nitric oxide synthase (uNOS)-immunoreactive neurons and nerve fibers were strongly stained in the vascular walls of the submucosa and myenteric plexus in rats fed the test diet. The results indicate that the intake of chongkukjang mucilage could increase mucosal immune activity, gastrointestinal motility, and blood circulation in the GI tract.

상부 위장관 스텐트 삽입술의 이해 -적응증 및 추적 관리- (Indication and Post-Procedural Management of Upper GI Stent Implantation)

  • 주문경;박종재
    • Journal of Hospice and Palliative Care
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    • 제12권2호
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    • pp.49-55
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    • 2009
  • 상부 위장관 스텐트 삽입술은 근치적 수술이 불가능한 상부 악성 종양에 의한 상부 위장관 협착 환자의 폐쇄 증상 완화를 위한 보존적 치료로서 확립되었으며 내시경 개발 기술이 발달하고 임상 경험이 축적됨에 따라서 여러 상부 위장관 질환에서 스텐트 삽입술을 보다 편리하고 안전하게 시행할 수 있게 되었다. 그러나 스텐트 삽입술 이후에는 동통, 출혈, 천공과 같은 조기 합병증이나 스텐트 일탈, 스텐트 폐쇄 등의 후기 합병증이 발생할 수 있으므로 사후 관리 또한 중요하다.

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센서스를 위한 수치지도의 개발과 센서스트랙의 지정에 관한 연구 (Development of Digital Maps for Cencus and Establishment of Census Tract System)

  • 구자문
    • 한국인구학
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    • 제23권1호
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    • pp.181-196
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    • 2000
  • 본 연구는 센서스와 GIS가 어떻게 연계활용 될 수 있는지, 센서스 자료의 원할한 활용을 위한 전용의 수치지도가 왜 필요하며 그 제작은 어떠하여야 할지, 인구주택센서스 자료들의 발표기본단위가 될 센서스트랙과 블락 그룹이 왜 필요하며 어떻게 결정되어야 할 지에 관한 연구를 수행하였다. 본 연구의 결론에 의하면: 첫째, 센서스와 GIS가 결합됨으로 인하여 센서스의 방법이며 절차가 좀더 명확히 효율적으로 진행될 수 있고, 각종 분석과 표현이 다양해지고 용이해질 수 있으므로 이에 대한 고려와 연구가 요구되며, 둘째, 한국에서 제작되고 있는 각종의 수치지도들은 방대한 정보들을 포함하고 있어 제작기간이 길고 갱신상의 어려움이 존재하므로 센서스만을 위한 간결한 수치지도를 간략히 개편하여 활용하여도 좋다고 보며, 셋째, 센서스자료의 기본발표단위를 현재의 읍, 면, 동 보다 좀더 세분화된 센서스트랙과 블락그룹 등으로 지정하여야 자료의 유용도가 높아질 것으로 본다. 이들 경계선응 현재 인구주택총조사에 쓰이고 있는 조사구의 경계와 근린주구 이론과 아울러 여러 가지 물리적, 사회적, 경제적, 행정적 요소들을 감안하여 결정하는데, 한 개의 센서스트랙에 인구를 4,000명 정도로 하고 블락그룹은 1,500명 정도로 하되, 한 개의 센서스트랙에 1-9개의 블락그룹이 탄력성 있게 포함되도록 하면 좋을 것으로 본다.

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하복부 암성통증에 대한 하 장간막신경총 차단 (Inferior Mesenteric Plexus Block for Lower Abdominal Cancer Pain)

  • 오흥근;윤덕미;정소영
    • The Korean Journal of Pain
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    • 제6권2호
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    • pp.199-203
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    • 1993
  • Inferior mesenteric plexus block(IMPB) is a nerve block for lower abdominal pain originating from GI tract of distal transverse colon to sigmoid colon and other polvic organ where the inferior mesenteric plexus contains visceral afferent fibers of that organ. We performed IMPB on two patients with lower abdominal pain. Case I: 61 year old female diagnosed with cancer of stomach and uterine cervix and carcinomatosis, experienced complete relief from pain for a period of 7 months after IMPB. Case II: male, 28 years old, who had contracted cancer of the descending colon with obstructive jaundice and pancreatitis had complained of pain in the whole of the abdominal area. IMPB was performed for lower abdominal pain. Seven days after, a celiac plexus block was also performed for upper abdominal pain. The patient complained of recurring pain in the left & upper lower abdomen 30 days after the IMPB. The intensity of the pain was visual analogue scale 4 and it was managed by continuous epidural block. Conclusion: It is our recommendation that IMPB is a reliable method for treatment of lower abdominal pain originating from malignant condition of GI tract from distal transverse colon to sigmoid colon and urinary bladder.

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Endoscopic vacuum therapy for treatment of spontaneous and iatrogenic upper gastrointestinal defects

  • Kavea Panneerselvam;Jake S. Jacob;Ronald E. Samuel;Andy Tau;Gyanprakash A. Ketwaroo;Wasif M. Abidi;Robert J. Sealock
    • Clinical Endoscopy
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    • 제56권6호
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    • pp.754-760
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    • 2023
  • Background/Aims: Endoscopic vacuum therapy (EVT) can heal a variety of defects within the gastrointestinal (GI) tract via applying negative pressure, which reduces the defect size, aspirates the infected fluid, and promotes granulation tissue. Here we present our experience with EVT as it relates to both spontaneous and iatrogenic upper GI tract perforations, leaks, and fistulas. Methods: This retrospective study was conducted at four large hospital centers. All patients who underwent EVT between June 2018 and March 2021 were included. Data on multiple variables were collected, including demographics, defect size and location, number and intervals of EVT exchanges, technical success, and hospital length of stay. Student t-test and the chi-squared test were used to analyze the data. Results: Twenty patients underwent EVT. The most common defect cause was spontaneous esophageal perforation (50%). The most common defect location was the distal esophagus (55%). The success rate was 80%. Seven patients were treated with EVT as the primary closure method. The mean number of exchanges was five with a mean interval of 4.3 days between exchanges. The mean length of hospital stay was 55.8 days. Conclusions: EVT is a safe and effective initial management option for esophageal leaks and perforations.

젊은 성인에서 복막 전이를 동반한 위장관의 투명 세포 육종 유사 종양: 증례 보고 및 문헌 고찰 (Clear Cell Sarcoma-Like Tumor of the Gastrointestinal Tract with Peritoneal Metastasis in a Young Adult: A Case Report with Literature Review)

  • 박소연;서정욱
    • 대한영상의학회지
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    • 제84권5호
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    • pp.1169-1175
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    • 2023
  • 위장관의 투명 세포 육종 유사 종양은 젊은 성인에서 국소 재발 및 원격 전이 가능성이 높은 드문 악성 중간엽 기원 위장관 종양이다. 저자들이 아는한 현재까지 영어로 보고된 소장에서 발생한 위장관의 투명 세포 육종 유사 종양의 영상 소견이 포함된 사례 보고서는 7예 뿐이다. 이에 저자들은 22세 여성 환자의 소장에서 발생한 위장관의 투명 세포 육종 유사 종양의 영상 소견을 보고하고 발표된 논문들의 영상 소견을 정리해 보고자 한다.