- Apoptosis in Renal Hypertrophy after Uninephrectomy in the Rats.
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Chan Pil Park, Jung Woo Noh, Joo Seob keum, Myung Sook Kim, Moon Hyang Park
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Korean J Pathol. 2001;35(6):513-523.
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 Abstract
- BACKGROUND
Glomerular compensatory hypertrophy maintains decreased renal function after uninephrectomy (UNX).
Proliferation and apoptosis of renal cells may be involved in hypertrophy.
METHODS
In small and large male Sprague-Dawley rats, contralateral kidneys were harvested 1, 7, 14 and 30 days after UNX. Apoptosis was assessed by the Tdt-mediated dUTP-digoxigenin nick end labelling method. Proliferating cell nuclear antigen and Fas ligand (FasL) expression was determined by immunohistochemically.
RESULTS
Morphometrically, glomerular hypertrophy was observed in both small and large rats after UNX, and it was more significant in the small rats. The glomerular proliferation index (PI) was gradually increased from day 7 but decreased on day 30 in the small rats. Glomerular PI was significantly increased from day 7 in large rats and peaked at day 14. Apoptotic cells in the glomeruli were slightly increased on day 1 and on day 7 in both groups of rats. The expression of FasL was gradually increased in the distal tubular epithelium in both groups.
CONCLUSIONS
These results demonstrate different profiles regarding the compensatory growth of the kidney, cell proliferation, and apoptosis during the period of compensatory hypertrophy in uninephrectomized rats of different weight and age. Apoptosis may play a role in regressing a number of proliferated cells during renal compensatory hypertrophy.
- Does the Colorectal Cancer Among Koreans Share the Same Pathological Features by Geographical Distribution: A Nationwide Survey of Surgically Resected 1,676 Cancers from 1,602 Patients.
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Mee Soo Chang, Jin Hee Sohn, Dae Young Kang, Gyeong Hoon Kang, Myung Sook Kim, Woo Ho Kim, Jong Hee Nam, Woo Sung Moon, Sun Hoo Park, Cheol Jeun Park, Ro hyun Sung, Young Lyun Oh, Eun Sook Chang, Hee Kyung Chang, Mee Yon Cho, Kyung Ja Cho, Yong Il Kim
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Korean J Pathol. 2001;35(1):14-19.
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Abstract
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- BACKGROUND
This nationwide survey was undertaken to characterize the general pathological features of colorectal cancer in Korea, and especially to elucidate the geographical characteristics by means of their anatomical distribution.
METHODS
We analysed 1,676 colorectal cancers (from 1,602 patients) surgically resected in 1998 at 15 institutions from nine geographical sites in Korea.
RESULTS
The topographic incidence of colorectal cancer in seven out of the total nine geographical sites, was the highest in the rectum (32-54%); and those from Wonju and Cheongju were in the sigmoid colon (28% for both). The right colon cancer incidence was 42% in Wonju and 36% in Cheongju, while it was 17-22% in the other areas. The cecal cancer incidences in Wonju and in Taegu were 7% and 8%, respectively, but 0-4% in the other areas. As for histology, moderately differentiated adenocarcinoma was the most frequent (46-84%), except for in Wonju and Chonju, where the most predominant type was well differentiated (63% and 52%, respectively).
CONCLUSION
The incidence of right colon cancer was higher in Wonju and Cheongju, than in the other geographical sites.
The cecal predilection was prominent in Taegu and Wonju. The Elucidation of geographical differences in degree of differentiation for tubular adenocarcinoma seems to require further cumulative study with strict guidelines.
- Expression of BrdU and C-Ha-ras in Experimentally Induced Enzyme Altered Foci of the Liver and Hepatocellular Carcinoma.
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Myung Sook Kim, Woo Ho Kim, Yong Il Kim
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Korean J Pathol. 1994;28(6):584-595.
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Abstract
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- For sequential phenotypic changes including enzyme altered hepatocytic foci, hyperplastic nodules, hepatocellular adenomas and carcinomas were produced in Sprague-Dawley rats by Solt-Farber method (administration of diethylnitrosamine and acetylaminofluorene (AAF), and partial hepatectomy). The immunohistochemical expressions of glutathione S transferase P (GST-P) and bromodeoxyuridine (BrdU) were assessed for selective proliferative activity in the enzyme altered foci and the subsequently developed lesions by double immunohistochemical staining technique. Immunoreactive areas against GSTP gradually increase from early period of carciogenesis. BrdU labeling in such areas remained high during the first week. but decreased thereafter. BrdU labeling index remained low in the GSTP negative area throughout the experimental period. This suggests that cells in the enzyme altered foci keep away from the suppressor effect of AAF in contrast to the normal cells in which their growth are inhibited by AAF. BrdU labeling index remained very low in both hyperplastic nodule and adenoma which were prevalent during the mid-experimental period, but increase markedly in carcinoma. The long period of low BrdU labeling index seems to correspond to the "slowly growing step of persistent nodule" during hepatocarcinogenesis. The differentiation index, a ratio of S phase fraction between GSTP positive and negative areas, was low in adenoma-developing period and high in carcinoma-developing period. C-Ha-ras p21 was not expressed in foci of enzyme altered hepatocyte and hyperplasia, but highly positive in carcinoma. This indicates that the c-Ha-ras may involve the late step of hepatocarcinogenesis.
- Atypical Condyloma of Uterine Cervix: It's Cytological Similarity to Squamous Cell Carcinoma.
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Chan Kum Park, Myung Sook Kim, Jung Dal Lee
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Korean J Pathol. 1990;24(3):310-315.
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Abstract
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- Atypical condyloma is a variant of flat condyloma characterized by the presence of atypical koilocytes having large hyperchromatic, smudged and often bizarre nuclei.
Atypical condyloma can be frequently misdiagnosed on cytologic smear and on tissue sections by its marked cellular atypia, as high grade dysplasia, in situ or even invasive squamous cell carcinoma. We described two cases of atypical condyloma of the female genital tract. The cytologic features and histologic changes were reminiscent of those of invasive squamous cell carcinoma and severe degree of dysplasia of the uterine cervix. The differential findings between atypical condyloma and squamous cell carcinoma were discussed in detail.
- Gastric Phycomycosis Presenting as an Ulcerative Lesion within the Early Gastric Carcinoma.
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Myung Sook Kim, Kwang Yun Kim, Yong Il Kim
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Korean J Pathol. 1987;21(3):176-184.
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Abstract
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- Primary phycomycosis of the stomach within the ulcerative portion of early gastric carcinoma is presented in a sixty one year old male alcoholics. In the center of IIc type submucosal adenocarcinoma was a large deep ulcer (UL-IV) which was the only seat of phycomycetes infection accompanied with angioinvasion and exudative endovasculitis aside from unusual granuloma formation with Splendore Hoeppli phenomenon and eosinophilic response as in allergic granulomatous aspergillosis. The above features were reconstructed to indicate that the phycomycetes infection was confined to the type III area of IIc + III early gastric carcinoma, and that the local ulcerogenic lesion seems more contributory in its development than systemic factors including gastric carcinoma per se or alcoholic consumption.
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