• 제목/요약/키워드: Langerhans cells

검색결과 68건 처리시간 0.025초

PROTECTION OF CUTANEOUS NEURONS BY A NEW PEPTIDOMIMETIC ENDOWED WITH NEUROTROPHIC AND ANTI-APOPTOTIC PROPERTIES

  • Imbert, I.;Nicolay, J.F.
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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    • pp.161-161
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    • 2003
  • The cutaneous network of unmyelinated nerve fibers is extremely dense, and closely interacts with the many cell types present in dermis and epidermis, including keratinocytes, fibroblasts, Langerhans cells, and melanocytes. Cell communication involves various neuroendocrine factors, with cell differentiating and proliferative activities, or inflammatory properties. Thus, nervous cells in the skin not only create a sensory system connected to the central nervous system, but also mediate many of the biological activities of the skin.(omitted)

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Silymarin attenuates escitalopram (cipralex) induced pancreatic injury in adult male albino rats: a biochemical, histological, and immunohistochemical approach

  • Rasha Mamdouh Salama;Sara Gamal Tayel
    • Anatomy and Cell Biology
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    • 제56권1호
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    • pp.122-136
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    • 2023
  • Depression is a prevalent global problem since ages, predominately treated with SSRI. Cipralex, is an antidepressant of the SSRIs class used as a remedy for mood, depression and anxiety. Silymarin (SIL), a natural free radical scavenging, has an antioxidant and anti-inflammatory properties. This hypothesis evaluates, for the first time, the role of cipralex on the structure of the endocrine and exocrine components of the pancreas and assess the beneficial effects of SIL on these changes. Forty-five rats were divided into control, cipralex, and cipralex plus SIL groups. During sacrifice, all rats and pancreases were weighed and the ratio of pancreatic weight (PW) to rat weight (RW) was calculated, blood samples were collected to estimate fasting glucose, insulin and amylase levels, the specimens were prepared for histological, immunohistochemical (inducible nitric oxide synthase [iNOS], tumour necrosis factor-alpha [TNF-α], caspase 3, proliferating cell nuclear antigen [PCNA], and anti-insulin antibody), and morphometrical studies. Cipralex group exhibited marked destruction of the pancreatic architecture of the exocrine and endocrine parts, with a dense collagen fiber deposition. Also, there is highly significant decrease (P<0.001) of PW/RT ratio, insulin, and amylase levels, the number and diameter of islets of Langerhans, the number of PCNA positive immunoreactive cells, and the number of insulin positive β-cells. Furthermore, a highly significant increase of glucose level, iNOS, TNF-α, and caspase-3 positive immunoreactive cells in the islets of Langerhans and acinar cells were observed. SIL improves the pancreatic histological architecture, weight loss, biochemical, and immunohistochemical analyses. Administering SIL is advantageous in managing cipralex induced pancreatic injury via its anti-inflammatory, antioxidant, and anti-apoptotic qualities.

성인에서 발견된 중추성 요붕증이 합병된 폐 랑게르한스 세포 조직구증 -1예 보고- (A Case of Pulmonary Langerhans Cell Histiocytosis associated with Central Diabetes Insipidus in Adult -A case report -)

  • 유병수;이재웅;조태준;홍기우;김건일;이원용;김동규;전선영
    • Journal of Chest Surgery
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    • 제38권12호
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    • pp.866-869
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    • 2005
  • 랑게르한스 세포 조직구증(Langerhans Cell Histiocytosis)은 병적인 랑게르한스 세포의 과도한 증식과 침윤으로 생기는 병으로 병태 생리가 확실하게 밝혀져 있지 않다. 소아에서 백만명 당 3$\∼$4명의 발생률을 보이나 성인의 경우 그 발생빈도가 확실치 않다. 피부, 귀, 골수, 간, 비장, 폐, 뇌하수체-시상하부, 위장관 등 거의 모든 장기가 침범되며 뇌하수체-시상하부 축이 침범되면 요붕증이 발생한다. 원발성 폐 랑게르한스 세포 조직구증이 타장기의 침범과 동반되는 경우는 드물며, 요붕증을 동반한 경우는 더욱 드물다. 국내에서 랑게르한스 세포 조직구증 중 요붕증을 동반한 예는 다수의 보고가 있었으나 중추신경계 등 폐 이외의 장기침범이었으며 원발성 폐 랑게르한스 세포 조직구증과 동반된 중추성 요붕증은 1예가 보고되었다. 저자는 중추성 요붕증을 동반한 폐 랑게르한스 세포 조직구증을 경험하였기에 문헌고찰과 함께 보고하는 바이다.

양측성, 재발성 자연기흉을 동반한 폐 조직구증 1예 (A Case of Pulmonary Histiocytosis-X Associated with Bilateral, Recurrent, and Spontaneous Pneumothorax)

  • 홍사준;안강현;이원연;공수정;용석중;신계철
    • Tuberculosis and Respiratory Diseases
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    • 제41권2호
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    • pp.152-157
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    • 1994
  • 본 저자들은 양측성으로 반복되는 자연기흉 소견을 보인 21세 남자 환자에서BAL은 시행하여 조직구내 Birbeck granule을 찾음으로써 확진할 수 있었던 골 침범을 동반한 폐 조직구증 1예를 문헌 고찰과 함께 보고하는 바이다.

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가임기 간접흡연 여성에서 발생한 폐 호산구성 육아종 1예 (A Case of Pulmonary Eosinophilic Granuloma in a Passive-Smoking Reproductive Female)

  • 신재호;김지영;오수환;박홍수;정상수;나상규;김형중;안철민;김해균;김상진;조상호
    • Tuberculosis and Respiratory Diseases
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    • 제45권2호
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    • pp.421-428
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    • 1998
  • 기흉과 미만성 간질성 폐질환의 소견을 보인 흡연력이 없는 젊은 여자 환자에서 개흉 폐생검후 면역조직화학염색을 통하여 폐 호산구성 육아종을 진단한 1예를 경험하였기에 보고하는 바이다.

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중추성 요붕증을 동반한 원발성 폐 조직구종 X 1예 (A Case of Primary Pulmonary Histiocytosis-X Associated with Central Diabetes Insipidus)

  • 김영민;박융인;최영근;이재승;이우철;홍진희;이수봉;류기찬;이민기;이창훈;이형렬;박순규
    • Tuberculosis and Respiratory Diseases
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    • 제46권1호
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    • pp.110-115
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    • 1999
  • 저자들은 호흡곤란과 다음, 다뇨로 내원한 23세 남자에서 임상소견, 흉부 X-선 검사, 고해상도 흉부단층 촬영, 수분제한검사, 개흉 폐생검으로 확진된 흔치 않은 중추성 요붕증을 통반한 원발성 폐 조직구증 X를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

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괄루성 엑기스가 백서에서의 Alloxan 유발 당뇨에 미치는 영향 (Antidiabetogenic Activity of Trichosanthes kirilowii on the Alloxan-treated Mouse)

  • 백병걸;강석균;안병준
    • 약학회지
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    • 제29권3호
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    • pp.152-158
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    • 1985
  • In order to investigate the antidiabetogenic activity of T. kirilowii on the alloxan-treated mice, the effects of the oral administration of the methanol extract on the blood glucose, the survival rate and the histological changes of the Langerhans' islet were observed. The blood glucose was reached at the highest levels of $265.03\pm15.07$ and $186.41\pm0.16mg/dl at 30 min after alloxan injection, and at the lowest levels of $43.35\pm5.28$ at 4 hour and $20.40\pm3.264mg/dl at 10. hour in experimental and control group, respectively. 57.15% of the experimental group and 4.2%, of the control group were survived more than 24 hours. The life spans of the mice, which were dead within 24 hours, were $631.45\pm60.17$ for the experimental group and $414.60\pm36.24$ min for the control group. The mice from the control group, which were dead within 10 hours, showed totally necrotized $\alpha$- and $\betha$-cells. However, 3 of the 10 mice from the experimental group, which were survived until 24 hours, showed a normal histological feature of the Langerhans' islet.

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Neuroimmunological Mechanism of Pruritus in Atopic Dermatitis Focused on the Role of Serotonin

  • Kim, Kwangmi
    • Biomolecules & Therapeutics
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    • 제20권6호
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    • pp.506-512
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    • 2012
  • Although pruritus is the critical symptom of atopic dermatitis that profoundly affect the patients' quality of life, controlling and management of prurirtus still remains as unmet needs mainly due to the distinctive multifactorial pathogenesis of pruritus in atopic dermatitis. Based on the distinct feature of atopic dermatitis that psychological state of patients substantially influence on the intensity of pruritus, various psychotropic drugs have been used in clinic to relieve pruritus of atopic dermatitis patients. Only several psychotropic drugs were reported to show real antipruritic effects in atopic dermatitis patients including naltrexone, doxepin, trimipramine, bupropion, tandospirone, paroxetine and fluvoxamine. However, the precise mechanisms of antipruritic effect of these psychotropic drugs are still unclear. In human skin, serotonin receptors and serotonin transporter protein are expressed on skin cells such as keratinocytes, melanocytes, dermal fibroblasts, mast cells, T cells, natural killer cells, langerhans cells, and sensory nerve endings. It is noteworthy that serotonergic drugs, as well as serotonin itself, showed immune-modulating effect. Fenfluramine, fluoxetine and 2, 5-dimethoxy-4-iodoamphetamine significantly decreased lymphocyte proliferation. It is still questionable whether these serotonergic drugs exert the immunosuppressive effects via serotonin receptor or serotonin transporter. All these clinical and experimental reports suggest the possibility that antipruritic effects of selective serotonin reuptake inhibitors in atopic dermatitis patients might be at least partly due to their suppressive effect on T cells. Further studies should be conducted to elucidate the precise mechanism of neuroimmunological interaction in pruritus of atopic dermatitis.

소 결핵균의 면역세포화학적 동정 (Immunocytochemical identification of Mycobacterium bovis in tissues)

  • 김순복;서정향;문운경
    • 대한수의학회지
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    • 제33권1호
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    • pp.119-123
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    • 1993
  • The present study was intended to use the avidin-biotin-peroxidase-antiperoxidase complex (ABPAP) method for the identification of Mycobacterium bovis in the tissue sections of infected cattle. Antibodies and linksera for ABPAP procedure used in incubated order were rabbit anti-Mycobacterium polyvalent antibodies, goat anti-rabbit IgG, rabbit peroxidase-antiperoxidase complex, biotinyl-horse anti-rabbit IgG, and avidin-biotin-peroxidase complex. Where the bacterial antigen was localized by ABPAP, a dark brown deposit occurred in the cytoplasms of macrophages and Langerhans' giant cells of the granulomatous lesions. The method approved to be highly specific for the identification of the bacteria and allowed a precise localization of the bacterial antigen in infected cells.

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란게르한스 세포의 출현횟수에 대한 통계적 고찰 (A statistical consideration on the number of occurrences of langerhans cells)

  • 이기원
    • 응용통계연구
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    • 제5권2호
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    • pp.271-282
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    • 1992
  • 자궁경부암을 대상으로 란게르한스 세포와 악성변화의 연관성을 연구할 때 사용할 수 있는 통계적 방법을 제시하였다. 포아슨 확률모형에 바탕을 두어 설정된 여러 가능한 부모형 가운데 관찰치에 가장 적합한 모형을 AIC유형의 모형선택 기준에 의하여 선택하였다. 모형선택 기준의 표본분포는 불스트?을 이용하여 근사시키고 추정량의 표본분포는 정규근사를 이용하여 구하였다.

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