• 제목/요약/키워드: pathological observation

검색결과 114건 처리시간 0.025초

화재로 인한 HCN 가스에 노출된 마우스의 병리학적 관찰 및 단세포 전기영동법을 사용한 DNA 변성 추적에 관한 연구 (A Study on DNA Degeneration by Comet Assay & Pathological Observation for Mouse Which were Exposed HCN Gases from Fire)

  • 조남욱;오은하;황성규
    • 한국가스학회지
    • /
    • 제16권6호
    • /
    • pp.7-16
    • /
    • 2012
  • 화재시 당면할 수 있는 위험성의 여러 인자 가운데 연소 독성 영향은 피난 및 최종 생존에 중요한 영향을 미치고 있다. 화재 독성에 지금까지 대한 대부분의 연구는 치사 측면에 국한되어 왔다. 이에 본 연구에서는 대표적인 질식성 가스인 HCN을 대상으로 가스유해성시험방법(KS F 2271)을 통하여 실험동물(흰쥐)에 직접 독성가스를 흡입시킨 후 평균행동정지시간을 측정하고, 이들 실험동물군의 내부 장기 변화, 혈액학 분석 및 단세포전기영동분석을 통해 연소 독성가스가 생체에 미치는 영향을 정량적으로 분석하고자 하였으며, 기존 가스유해성시험에서 확인할 수 없었던 접근(병리검사, 혈액검사, 혈액생화학검사, 단세포전기영동분석)을 통해 연소 독성학 분야의 생물학적 위험도를 측정하고자 하였다.

국내 분리 encephalomyocarditis virus의 실험적 감염 Syrian hamster에 대한 병리학적 및 면역조직화학적 연구 (Pathological and immunohistochemical studies in Syrian hamsters experimentally infected with encephalomyocarditis virus isolated in Korea)

  • 윤원기;조성환
    • 대한수의학회지
    • /
    • 제34권2호
    • /
    • pp.349-359
    • /
    • 1994
  • To elucidate pathogenicity to hamster of encephalomyocarditis virus $K_3$ strain that was isolated in Korea from the swine with reproductive failures, adult male syrian hamsters were experimentally infected intraperitoneally with the virus at $10^{7.0}\;TCID_{50}/0.1ml$ and pathological and immunohistochemical studies were performed. The results obtained through the experiment were as follows. 1. Clinical signs such as depression, unkempt hair and bilateral parlysis of hind limbs were observed. 2. At necropsy, mild congestion was observed in the cerebrum, liver, kidney and lung, and atrophy was evident in testis. 3. In microscopic observation, degeneration and necrosis of the nervous cells and perivascular mononuclear cell infiltration were manifested in central nerve system, and various degrees of degeneration and necrosis of parenchymal cells were detected in pancreas, lacrimal gland, liver, kidney and testis. 4. In immunohistochemical observation, strong positive reactions were observed in degenerated parenchymal cell of testis, and weak positive reactions, in hepatocytes.

  • PDF

돈지육에 대한 병리학적 관찰 (Pathological Observation on the Swine Carcass)

  • 전성환;이차수
    • 대한수의사회지
    • /
    • 제30권7호
    • /
    • pp.424-437
    • /
    • 1994
  • 부산시내 도축장에서 도살, 해체된 돼지지육의 일부를 모 육가공업체가 경매입찰한 지육에 대해 1연간에 걸쳐 병변을 육안적으로 관찰함과 동시에 현미경으로 검사하였던 바 다음과 같은 결과를 얻었다. 총관찰두수는 13,083두이며, 이중 병변을 나타낸 두수는 546두로써 총관찰두수의 약 4.2$\%$에 해당되었다. 병변별로는 농양이 제일 많았고, 다음이 골절, 관절염, 늑막염, 퇴색근 및 기타 질병의 순으로 나타났다. 농양이 관찰된 두수는 총 239두로 전체 관찰두수의 약 2.2$\%$에 해당되며 경부, 복부, 대퇴부 및 늑골부의 순으로 출현빈도를 보였다. 그리고 이들 농양의 크기는 최고 약 18cm에 달하는 것도 있었으며 크기가 다양하였다. 관절염은 총검사두수의 약 0.5$\%$였으며 발생부위별로는 슬관절, 주관절 및 고관절 순으로 많이 나타났고, 2개소 이상이 발병된 예가 많았으며, 만성증식성염이 주요 병변이었다. 골절은 총검사두수의 약 0.8$\%$, 늑막염과 퇴색근은 각각 약 0.3$\%$ 그리고 창변은 0.2$\%$로 나타났으며, 기타 섬유종 등이 관찰되었다. 이상의 각종 병변이 관찰된 것으로 보아 지육의 세밀한 검사를 통해 병변부의 제거와 병변부로 부터의 오염을 예방하는 것이 필요할 것으로 사료되었다.

  • PDF

개에 발생한 아연부족성 피부병의 임상병리학적 관찰 (A clinico-pathological observation in dogs associated with zinc-deficient dermatosis)

  • 오규실;이차수;한희석;정재용;박청규
    • 한국수의병리학회지
    • /
    • 제3권1호
    • /
    • pp.45-50
    • /
    • 1999
  • Canine dermatosis associated with zinc deficiency naturally occurred in three districts of Kyungpook. A diagnosis was made by clinical findings, clinico-pathological examinations, skin biopsy, and therapeutic tests. The result was diagnosed as a zinc-deficient dermatosis. The disease occurred in rapidly growing Tosa-dog hybrids 5 to 7 months old. Skin lesions included erytherma, alopecia, crusting, scaling around the mouth, eyes, legs and tail. Clinico-pathological findings were decreased serum zinc levels, slightly increased white blood cells, and secondary Staphylococcus intermedius infection of the crusts. The skin biopsies for histopathological examination revealed marked parakeratotic hyperkeratosis. The patients with skin lesions were successfully treated by zinc methonine(Zinpro) medication In conclusion, serum zinc level and skin biopsy are very helpful in diagnosis of canine zinc-deficient dermatosis.

  • PDF

Aujeszky’s Disease Virus의 실험적 감염 Rat의 병리조직학적 관찰과 면역조직화학적 항원 검출 (Immunohistochemical and Pathological Observations of the Rats Experimentally Infected with Aujeszky’s Disease Virus)

  • 조우영;조부제;조성환;이철호
    • 한국동물위생학회지
    • /
    • 제13권1호
    • /
    • pp.32-43
    • /
    • 1990
  • In order to investigate the clinico-pathological and immunohistochemical changes in the rats infected with Aujeszky’s disease virus(ADV), 100 heads of 4 weeks-old rats were inoculated intraperitoneally and intranasally, with the domestically isolated ADV, NYJ-1-87 strain, at $10^{3.0}$ or $10^{5.0}$$TCID_ {50}$/0.2ml. Results obtained through the experiments were summarized as follows : 1. Clinical signs such as dulness, anorexia, pruritus, fascial edema, dyspnea and ataxia were observed from the 2nd day and died at the 3rd to 5th day after ADV inoculation. By necropsy, congestion and hemorrhage were observed in the abdominal organs, while no specific changes were detected in the other organs. 2. In histopathological observation, degeneration and necrosis of the nervous cells, non-suppurative meningoencephalitis, microgliosis and perivascular cuffing were manifested in central nerve system but no specific changes were observed in the other organs. 3. By immunohistochemical staining using peroxidase antiperoxidase, the positive cells were detected in the tissues of kideny, spleen, urinary bladder and lung.

  • PDF

ACUTE INFECTIOUS BURSAL DISEASE IN CHICKENS : PATHOLOGICAL OBSERVATION AND VIRUS ISOLATION

  • Chowdhury, E.H.;Islam, M.R.;Das, P.M.;Dewan, M.L.;Khan, M.S.R.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제9권4호
    • /
    • pp.465-469
    • /
    • 1996
  • Pathological and virological investigations were conducted on suspected outbreaks of infectious bursal disease (IBD) in a broiler farm and five pullet-raising poultry farms of Mymensingh and Tangail districts of Bangladesh. About 80 to 100 percent chicks were affected at the age of 26 to 45 days and mortality varied from 20 to 30 percent in broilers and 40 to 80 percent in layer chicks. Signs, symptoms, gross and microscopic lesions were typical of acute IBD. Several isolates of virus could be obtained by embryo inoculation and the virus was diagnosed as infectious bursal disease virus (IBDV) by agar gel immunodiffusion test (AGID). The virus isolate belonged to the very virulent pathotype of IBDV causing 100 percent mortality in three weeks old chicks on experimental infection.

Head and Neck Squamous Cell Carcinoma - Comparative Evaluation of Pathological Parameters in Young and Old Patients

  • Naz, Samreen;Salah, Kanwal;Khurshid, Amna;Hashmi, Atif Ali;Faridi, Naveen
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제16권9호
    • /
    • pp.4061-4063
    • /
    • 2015
  • Background: To evaluate pathological features of head and neck squamous cell carcinoma (HNSCC) and to compare these pathological features in patients younger and older than 40 years. Materials and Methods: All resection specimens of HNSCC between 2010 and 2013 evaluated. Tumor characteristics - grade, location (site) cervical node status, alongwith presence or absence of extranodal extension, lymphovascular invasion, gender and age - were extracted from surgical pathology reports. Results: Among these n=19 patients (21.8%) were 40 years or younger and n=68 patients (78.2%) were above 40 years of age. The mean age was 34 (20-40 years) in the younger group and 56 (42-86) in the older group. The most common location of HNSCC in both groups was the oral cavity. The analysis of histopathological features including grade of tumor, tumor size, extranodal extension and comparison between two groups do not show any significant difference. Conclusions: There are no specific pathological characteristics of HNSCC in young patients. An interesting observation is that exposure to expected risk factors is similar in both groups, in younger patients they have less time to act and yet tumors are the same in terms of tumor size, lymph node status and lymphovascular invasion. Therefore further research is recommended to look for potentiating factors.