• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 2003년도 Annual Meeting of KSAP : International Symposium on Pharmaceutical and Biomedical Sciences on Obesity
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• pp.110-110
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• 2003

It is well-documented that decreased antioxidant defense system by ultraviolet(UV) irradiation is the most important reason to induce the skin aging, especially photoaging. Chlorogenic acid(CA), a nonflavonoid catecholic compound, is present in the diet as part of fruits, tea, coffee and wine and has been reported to have anti-inflammatory, antimutagenic and anticarcinogenic activities. In this study, we examined the effects of CA on the UV -induced photoaging. Firstly, we investigated the protective effect of CA on antioxidant defense system in HaCaT human keratinocytes after UV irradiation treatment. UV irradiation decreased antioxidant defence enzyme activities of superoxide dismutase, catalase and GSH contents, which were restored by CA. To elucidate the effect of CA, 1% of CA and vehicle were applied to human buttock skin before and after UV irradiation (2MED). CA prevented UV -induced matrix metalloproteinase-1 mRNA expression and procollagen mRNA depression. And CA also increased CD1a(Langerhans cell) expression significantly. Our results suggest that CA has protective effects on UV -induced photoaging by increasing cellular antioxidant defense system. Therefore, CA may be a useful anti-aging agent for cosmetic purpose.

• Korean Journal of Radiology
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• 제2권4호
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• pp.222-230
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• 2001

Central diabetes insipidus (DI) can be the outcome of a number of diseases that affect the hypothalamic-neurohypophyseal axis. The causes of the condition can be classified as traumatic, inflammatory, or neoplastic. Traumatic causes include postoperative sella or transection of the pituitary stalk, while infectious or inflammatory causes include meningitis, lymphocytic hypophysitis, and granulomatous inflammations such as sarcoidosis and Wegener's granulomatosis. Various neoplastic conditions such as germinoma, Langerhans cell histiocytosis, metastasis, leukemic infiltration, lymphoma, teratoma, pituitary adenoma, craniopharyngioma, Rathke cleft cyst, hypothalamic glioma, and meningioma are also causes of central DI. In affected patients, careful analysis of these MR imaging features and correlation with the clinical manifestations can allow a more specific diagnosis, which is essential for treatment.

• 동아시아식생활학회지
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• 제22권3호
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• pp.334-340
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• 2012

손바닥선인장의 한 종류인 노팔(Opuntia ficus-indica (L.) Mill)을 주재료로 하여 제조한 복합물(OF)의 항당뇨 효과를 알아보기 위해 8주령 수컷 SD-rat에게 streptozotoxin을 주사하여 당뇨를 유발하고, 사료에 OF를 첨가하여 3주간 급여하였으며, 1주일 간격으로 공복 시 혈당을, 3주 후에는 당내성과 혈장 인슐린 농도를 측정하고 췌장 조직에 면역조직화학 염색을 실시하였다. 실험동물은 정상 대조군(NC), 당뇨 대조군(DC), 2% OF 급여군(OF-2), 5% OF 급여군(OF-5)으로 구분되었으며, NC와 DC는 기초식이를, OF-2와 OF-5는 기초식이에 각각 2%와 5%의 OF를 섞어서 급여하였다. 실험 개시 후 1주마다 12시간 절식시켜 꼬리정맥에서 혈액을 채취하여 공복 혈당을 측정하였다. 실험 3주 후 12시간을 절식시켜 glucose(50 mg/kg BW)를 복강주사한 다음, 30, 60, 90, 120분 경과 후에 혈당을 측정하여 당내성을 측정하였고, 심장에서 혈액을 채취하여 혈중 인슐린 함량을 분석하였다. 또한 췌장 조직에 대해 면역조직화학 염색을 실시하여 조직학적인 변화를 알아보았다. 3주간의 공복 시 혈당은 OF-5와 OF-2 모두 유의적으로 감소하였다(p<0.05). 당내성 측정 결과, OF 급여군은 DC와는 달리 혈당 농도의 변화 추이가 NC와 유사하였으며, 특히 OF-5는 OF-2에 비해서도 혈당 강하 효과가 높았던 것으로 드러났다. 췌장 조직의 면역염색에 의하면, OF의 혈당강하 기작은 췌장 Langerhans' Islet의 ${\beta}$-세포를 생성시키고, ${\beta}$-세포의 사멸을 억제시켜 인슐린의 분비를 정상화시키는 것이었으며, 이러한 결과는 혈장 인슐린 함량의 증가로 재확인할 수 있었다. 결론적으로 OF는 I형 당뇨에서 현저한 혈당 강하 효과 및 Langerhans' Islet의 ${\beta}$-세포수를 회복시켜줌으로써 I형 당뇨의 치료에 효과가 있을 것으로 사료된다.

• Advances in pediatric surgery
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• 제15권2호
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• pp.103-112
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• 2009

Catheter related and perianal problems are common surgical complications encountered during the treatment of pediatric malignancies. However acute surgical abdominal emergencies are rare. The aim of this study is to review acute surgical abdominal complications that occur during the treatment of childhood malignancies. Out of a total of 1,222 patients who were newly diagnosed with malignant disease, between January 2003 and May 2008, there were 10 patients who required surgery because of acute abdominal emergencies. Their medical records were reviewed retrospectively. Hematologic malignancies were present in 7 patients (4 leukemia, 2 lymphoma, 1 Langerhans cell histiocytosis) and solid tumors in 3 patients (1 adrenocortical carcinoma, 1 desmoplastic small round cell tumor, 1 rhabdomyosarcoma). Seven patients had intestinal obstruction, two had gastrointestinal perforation and one, typhlitis. Intestinal obstructions were treated with resection of the involved segment with (N=2) or without (N=3) enterostomy. Two patients had enterostomy alone when resection could not be performed. Intestinal perforation was treated with primary repair. Typhlitis of the ascending colon was treated with ileostomy. Right hemicolectomy was necessary the next day because of the rapidly progressing sepsis. Three patients are now alive on chemotherapy and one patient was lost to followed-up. Among six patients who died, five died of their original disease progression and one of uncontrolled sepsis after intestinal perforation. Although rare, acute surgical abdominal complications can occur in childhood malignancies. Rapid and accurate diagnosis and appropriate operation are required for effective treatment of the complications.

• Clinical and Experimental Pediatrics
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• 제54권4호
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• pp.169-175
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• 2011

Purpose: Acute internal hemorrhage is an occasionally life-threatening complication in pediatric cancer patients. Many therapeutic approaches have been used to control bleeding with various degrees of success. In this study, we evaluated the efficacy of selective internal iliac artery embolization for controlling acute intractable bleeding in children with malignancies. Methods: We retrospectively evaluated the cases of 6 children with various malignancies (acute lymphoblastic leukemia, acute myelogenous leukemia, chronic myelogenous leukemia, T-cell prolymphocytic leukemia, Langerhans cell histiocytosis, and rhabdomyosarcoma), who had undergone selective arterial embolization (SAE) of the internal iliac artery at the Chonnam National University Hwasun Hospital between January 2004 and December 2009. SAE was performed by an interventional radiologist using Gelfoam$^{(R)}$ and/or Tornado$^{(R)}$ coils. Results: The patients were 5 boys and 1 girl with median age of 6.9 years (range, 0.7-14.8 years) at the time of SAE. SAE was performed once in 4 patients and twice in 2, and the procedure was unilateral in 2 and bilateral in 4. The causes of hemorrhage were as follows: hemorrhagic cystitis (HC) in 3 patients, procedure-related internal iliac artery injuries in 2 patients, and tumor rupture in 1 patient. Initial attempt at conservative management was unsuccessful. Of the 6 patients, 5 (83.3%) showed improvement after SAE without complications. Conclusion: SAE may be a safe and effective procedure for controlling acute intractable hemorrhage in pediatric malignancy patients. This procedure may obviate the need for surgery, which carries an attendant risk of morbidity and mortality in cancer patients with critical conditions.

• Tuberculosis and Respiratory Diseases
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• 제67권4호
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• pp.345-350
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• 2009

Erdheim-Chester disease (ECD) is a proliferative non-Langerhans cell histiocytosis of multiple organs. This is a rare disease of unknown etiology with a high mortality. We present the case report of a 26-year-old man diagnosed with ECD. He was referred to our hospital with elevated levels of aminotransferases. Although the diagnosis was uncertain, the patient was lost to follow up at that time. One year later, the patient returned to the hospital with generalized edema. Although a specific bone lesion was not found, the patient was experiencing the following: glomerulonephritis, aplastic anemia, hepatitis, and lung involvement. A lung biopsy was performed: the immunohistochemical stain were positive for CD68 and negative for S-100 protein and CD1a. We diagnosed as the patient as havinf ECD. Approximately 50% of ECD cases present with extraskeletal involvement. ECD should be considered as part of the differential diagnosis when multiple organs are involved.

• International Journal of Oral Biology
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• 제34권3호
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• pp.131-135
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• 2009

The sublingual locus has recently received great attention as a delivery site for various immunotherapies, including those that induce allergen-specific tolerance, and for vaccines that generate protective immunity. To further understand the immune functions of the human sublingual mucosa, we characterized the distribution of various immunocytes therein by immunohistochemistry. We identified professional antigen presenting cells (APCs), including Langerhans cells (LCs) and macrophages. $CD1a^+$ and $langerin^+$ LCs were further found to be distributed in the basal and supra-basal layers of the epithelium, and macrophages were identified in the lamina propria. HLA-$DR^+$ cells were observed in both the epithelium and the lamina propria, which mirrors the tissue distribution of LCs and macrophages within these tissues. $CD3^+$, $CD4^+$, and $CD8^+$ T cells were found to be distributed along the basal layer of the epithelium and also in the lamina propria. Although B cells, plasma cells, and $Foxp3^+$ regulatory T cells (Tregs) were only occasionally observed in the human sublingual mucosa in the absence of inflammation, they did show enrichment at inflammatory sites. Hence, we have further elucidated the immune cell component distribution in human sublingual mucosa.

• Tuberculosis and Respiratory Diseases
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• 제62권1호
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• pp.51-55
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• 2007

임상적으로 BOOP을 시사하는 경우 여러가지 감염증, 그 중에서도 EBV에 의한 감염증도 고려하여야 한다고 생각한다.

• 대한한방소아과학회지
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• 제15권1호
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• pp.105-115
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• 2001

The relation of endocrine in the western medicine and zangfu-organ functions in Korean medicine, related to growth disturbance, was studied and derived the following results. 1. The hormone most related to growth disturbance is, directly secreted from the anterior pituitary or is stimulated and secreted in the target grands, growth hormone, thyroid, adrenocortical hormone, gonadial hormone and is insulin secreted from $\beta$ cell of langerhans' slands of pancreas. 2. the pituitary has the most close relation with the kidney in the five zang-organ. Because the kidney is innate origin(先天之本) and promotes qi and blood(生化氣血), stores the essence of life(藏精), dominates the bones(主骨) and promotes the marrow(生骨髓). Especially it is connected with brain(通於腦). 3. In the children growth, the endocrine action in the pituitary has the most close relation with the kidney, As in the reports of the brain and spinal cord, bone, store essence of life, sexual maturation and decline(kidney-qi, sexual functions of both sexes(天癸)) etc, and cause of cretinism, dwarf in the main subject. 4. Somatomedin is the most important factor of the growth factors, IGF in another word. The unification of IGF and secretion is controlled firstly according to growth hormone, however is very closely related to the nutrition status in the non-hormonic causes. Also, it is affected very much by the insulin. 5. Insulin is one of the important hormone related to the growth and is secreted from the pancreas. Pancreas belongs to the functional system of spleen in oriental medicine, thus the growth disturbance, occurred due to error in insulin secretion and nutrition(in another words, the lack of postnatal essential substance from food-stuff(水穀精氣)), is closely related to the spleen. 6. From the results driven above, the hormone action of endocrine and problem in secretion, related to the growth disturbance, must be focused on the differentiation of symptoms and signs of the kidney and the spleen in oriental medicine.

• 대한영상의학회지
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• 제85권3호
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• pp.531-548
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• 2024

발달성 고관절 이형성증은 영아기 비구 형성이상으로 인해 고관절 불안정성이 발생하는 질환으로 정확한 초음파 검사가 이루어져야 한다. 특발성 대퇴골두 무혈성 괴사는 아동기 대퇴골두의 일시적인 혈류 장애로 인해 발생하며 무혈성, 분절화, 재골화, 잔여기 단계를 거치게 된다. 대퇴골두 골단분리증은 청소년기에 체중 부하와 같은 스트레스로 인해 대퇴골두가 골단선을 따라 내측으로 전위되는 질환이다. 일과성 고관절 활액막염과 화농성 관절염은 감별을 위해 관절액 흡인술이 필요할 수 있다. 골수염은 연부 조직 부종과 골 용해를 동반할 수 있다. 하지만, 다발성 병변의 경우 랑게르한스 세포 조직구증, 전이성 신경모세포종 등을 감별해야 한다. 본 종설에서는 이런 질환에 대한 영상 검사 방법 및 대표적인 소견을 소개하고자 한다.