• Title, Summary, Keyword: immunohistochemistry

Search Result 1,633, Processing Time 0.054 seconds

Detection of Akabane Virus Antigen from Aborted Fetal Calf Brain Tissue by Immunohistochemistry (유산 송아지의 뇌조직으로부터 Immunohistochemistry를 이용한 아까바네 바이러스항원 검출)

  • 윤차중;김도영;류영수
    • Journal of Veterinary Clinics
    • /
    • v.15 no.1
    • /
    • pp.100-103
    • /
    • 1998
  • 아까바네 바이러스로 인하여 유산된 태아의 뇌조직으로부터 '아까바네 바이러스 항원을 면역학적으로 검출하는 기법을 확립하였다. 아까바네 바이러스로 유산된 태아의 뇌는 조 직이 거의 손실되거나 유약하여 부검 즉시 포르말린 등에 보존하여야 하므로, 포르말린에 보존 된 뇌조직을 절편 하여 파라핀으로 포매된 조직표본으로부터 immunohistochemistry 방법으로 아까바네 바이러스 특이 항원을 검출하였다. 또한 이들 조직으로부터 직접 마우스 뇌내 접종과 조직배양내 바이러스 분리를 통하여 immunohistochemistry 법의 항원 검출 효율이 높음을 확 인하였다. 유산된 태아의 뇌조직에서 단크론 항체를 이용한 항원 검출 실험에서 세포의 세포질 내에서 아까바네 특이 항원이 검출되었고 hematoxylin-rosin 대조 염색으로 항원을 특이적으로 구분하여 진단할 수 있었다. 바이러스에 감염된 세포는 조직학적으로 변성이 심한 부위에서 다 수 관찰되었고 맥관계에 가까운 세포에서도 독립적으로 감염된 세포가 관찰되었다.

  • PDF

EVALUATION OF CELL PROLIFERATION IN EAR AND LYMPH NODE USING BRDU IMMUNOHISTOCHEMISTRY FOR MOUSE EAR SWELLING TEST

  • Lee, Jong-Kwon;Park, Jae-Hyun;Kim, Hyung-Soo;Jung, Seung-Tae
    • Proceedings of the Korean Society of Toxicology Conference
    • /
    • /
    • pp.97-97
    • /
    • 2002
  • A mouse ear swelling test (MEST) has been developed as an alternative to guinea pig models for contact sensitization potential. However, the MEST relies on a quantitative measurement of ear swelling as an endpoint by micrometer. In this study, we aimed to investigate the cell proliferation in ear and lymph node using Bromodeoxyuridine (BrdU) immunohistochemistry as a possible reliable marker for MEST.(omitted)

  • PDF

Prognostic Sub-Grouping of Diffuse Large B-Cell Lymphomas into Germinal Centre And Post Germinal Centre Groups by Immunohistochemistry after 6 Cycles of Chemotherapy

  • Hassan, Usman;Mushtaq, Sajid;Mamoon, Nadira;Asghar, Asghar Hussain;Ishtiaq, Sheeba
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.13 no.4
    • /
    • pp.1341-1347
    • /
    • 2012
  • Introduction: Diffuse large B-cell lymphomas (DLBCL) can be divided into germinal centre (GC-DLBCL) and post germinal centre (post GC-DLBCL) groups by applying immunohistochemical antibodies. As these subgroups respond differently to chemotherapy, it is possible at diagnosis to select a poor prognostic subgroup for aggressive treatment. Objective: To determine the frequencies of GC-DLBCL and post GC-DLBCL in patients by immunohistochemistry (IHC) and the clinical response after six cycles of chemotherapy. Subjects and Methods: In this descriptive study conducted in AFIP and CMH, Rawalpindi and NORI, Islamabad, from September 2010 to September 2011, a total of 75 pretreatment cases of DLBCL diagnosed during the study period were included. Cases were segregated in to GC-DLBCL and post GC-DLBCL groups according to results of immunohistochemistry markers CD10, BCL6 and MUM1. Immediate clinical response was assessed after 6 cycles of chemotherapy. Response was divided into complete response, partial response, stable disease or relapse or progression. Results: The mean age was $54.2{\pm}15$. Males were 53 (70.7%). Forty (53.3%) cases comprised the GC-DLBCL group; 25(62.5%) of them showed a complete response. Most patients of the post GC-DLBCL 19(54%) showed relapse/progression. Results of immediate clinical response in both prognostic subgroups were significant (p<0.05). Results regarding positivity with immunohistochemical antibodies CD10 (p 0.011), BCL6 (p 0.013) and MUM1 (p 0.000) regarding immediate clinical response were also significant. Conclusion: GC-DLBCL group shows better response to CHOP chemotherapy regimen. Immunohistochemistry should be used to further classify DLBCL as this can enable us to select aggressive group for aggressive treatment. This manuscript is important because the study is the first to becarried out exclusively in Pakistan or our part of the world.

Immunohistochemistry for the Detection of Swine hepatitis E virus in the liver

  • Ha, Seung-Kwon;Chae, Chan-hee
    • Proceedings of the Korean Society of Veterinary Pathology Conference
    • /
    • /
    • pp.28-28
    • /
    • 2003
  • Hepatitis E virus (HEV), previously referred to as enterically transmitted non-A, non-B hepatitis, is responsible for sporadic infections as well as large epidemics of acute viral hepatitis in developing countries. The disease generally affects young adults and reportedly has a mortality rate of up to 20% in infected pregnant women. HEV was once considered to be a member of the family Caliciviridae, but the unique genomic organization of HEV has led to the removal of HEV from the family and it was provisionally classified in an unassigned family of HEV-like viruses. In situ hybridization provides any cellular detail and histological architecture.[1] However, use of in situ hybridization is largely restricted to the laboratories because this technique is the greater technical complexity and expense compared with immunohistochemistry. Therefore, the objective of this study is to develop the immunohistochemistry for the detection of swine HEV from formalin-fixed, paraffin-embedded hepatic tissues. (omitted)

  • PDF

Co-infection of Canine Distemper Virus and Toxoplasma gondii in a Dog (개에서 디스템퍼 바이러스와 톡소플라즈마의 혼합 감염)

  • 강홍원;강상철;양형석;배종희;김재훈
    • Journal of Veterinary Clinics
    • /
    • v.21 no.1
    • /
    • pp.80-82
    • /
    • 2004
  • A 3 month-old male dog with clinical signs of anorexia, soft stool, ocular and nasal discharge, cough and respiratory distress was submitted to the Cheju National University for diagnosis. At necropsy, tan to pulp]e-red sublobar to lobar consolidations were presented in apical and cardiac lobe of lung. Histopathologically, severe diffuse bronchointerstitial pneumonia with necrotic bronchiolitis was noted in the lung. The demyelinating encephalitis and astrocytosis were presented in cerebellum and cerebrum. Numerous round, ovoid or cluster of tachyzoites were also identified in alveolar lumen, alveolar wall and cytoplasm of macrophages in the lung. The orgasnisms were demonstrated as Toxoplasma (T) gondii by immunohistochemistry. Intranuclear or intracytoplasmic eosinophilic inclusion bodies were seen in the glial cells of the cerebellum. Canine distemper virus (CDV) specific antigens were demonstrated in the cerebellum by the immunohistochemistry. In our knowledge, this is believed to be the first confirmed report of co-infection of CDV and T gondii in dog in Korea.

HER2 Expression in Ovarian Mucinous Carcinomas in Tunisia

  • Missaoui, Nabiha;Abdelkarim, Soumaya Ben;Ayachi, Malak;Hmissa, Sihem
    • Asian Pacific Journal of Cancer Prevention
    • /
    • v.15 no.19
    • /
    • pp.8121-8125
    • /
    • 2014
  • Background: Ovarian mucinous carcinoma has a poor prognosis in advanced stages and a poor response to conventional chemotherapy. An efficient treatment is not yet available. We heere investigated HER2 expression and the potential for trastuzumab therapy in ovarian mucinous tumors. Materials and Methods: Immunohistochemistry was performed in formalin-fixed, paraffin-embedded tissue from 27 ovarian mucinous tumors including 14 carcinomas and 13 borderline tumors diagnosed in the Pathology Department, Farhet Hached Hospital, Sousse, between 1993 and 2013. The HercepTest (DAKO) was used for immunohistochemistry. Results: HER2 expression was observed in only one borderline tumor (7.7%) and in 14.3% of mucinous carcinomas of the ovary. Conclusions: Our results suggest that trastuzumab therapy would be an option for patients with mucinous carcinoma when the tumor has HER2 overexpression.

Supratentorial Cortical Ependymoma in a 21-Month-Old Boy

  • Lee, Sang-Kook;Lim, Dong-Jun;Kim, Sang-Dae
    • Journal of Korean Neurosurgical Society
    • /
    • v.50 no.3
    • /
    • pp.244-247
    • /
    • 2011
  • Two-thirds of ependymomas arise in the infratentorial or intraventricles, whereas one-third are located supratentorially. But supratentorial "cortical" ependymomas are very rare. We report a case of a cortical ependymoma in a 21-month-old boy. The patient presented with simple partial seizures. This tumor was located in the postcentral gyrus and he had gross total excision. Microscopy and immunohistochemistry showed grade II differentiation ependymoma.

Immunohistochemistry: sole tool in diagnosing a rare case of primary vaginal amelanotic melanoma

  • Garg, Rashi;Gupta, Neelam
    • Obstetrics & gynecology science
    • /
    • v.61 no.6
    • /
    • pp.698-701
    • /
    • 2018
  • We report a rare case of vaginal amelanotic melanoma. Malignant melanomas are cutaneous and extracutaneous tumors that arise from embryological remnants of neural crest cells/melanocytes. Amelanotic melanomas at such rare locations can be misdiagnosed both clinically and radiologically. Therefore, histopathological examination and immunohistochemistry are mandatory for the diagnosis of these tumors. We diagnosed this case using histopathology and confirmed the diagnosis based on the presence of immunohistochemical markers human melanoma black 45 (HMB45) and S-100.

Immunohistochemistry of Human Telomerase Reverse Transcriptase in Head and Neck Squamous Cell Carcinoma and Resection Margin (두경부 편평상피세포암과 절제연에서 Human Telomerase Reverse Transcriptase의 발현)

  • Kim Yong-Bum;Rho Kyung-Sup;Hong Nam-Pyo;Ahn Hwoe-Young;Lee Yong-Sik;Song Young-Ho
    • Korean Journal of Head & Neck Oncology
    • /
    • v.18 no.1
    • /
    • pp.18-22
    • /
    • 2002
  • Background and Objectives: The expression of telomerase, a ribonucleoprotein complex, has been detected in tissues from many human cancers, but not in the majority of normal tissues except germ cell. It is believed that the activation of telomerase is linked to celluar immortality and may playa role in tumorigenesis. Human telomerase reverse transcriptase (hTERT) has been identified as a putative catalytic subunit of human telomerase and its expression is closely correlated with telomease activity. We studied the expression of hTERT in head and neck squamous cell carcinoma (HNSCC) and resection margin by immunohistochemistry for hTERT and evaluate the correlation between hTERT expression and clinical data in HNSCC. Materials and Methods: We performed a immunohistochemistry in 17 cases of HNSCC and 10 cases of resection margins, histologically normal. The correlations between the hTERT expression and the clinical data in HNSCC were analyzed. Result: hTERT immunoreactivities were detected in 14 of 17 (82.4%) HNSCC, 1 of 10 (10%) resection margin. No correlation was observed between clinical data and hTERT expression in HNSCC. Conclusion: hTERT is activated in HNSCC and its expression is independent from clinical data of patients.