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°íȯÀýÁ¦¼úÀ» ÅëÇÑ ³²¼ºÈ£¸£¸ó Á¦°Å°¡ ¹é¼­ Àü¸³¼±¿¡ ¹ÌÄ¡´Â ÇüÅÂÇÐÀû º¯È­ The Morphological Heterogeneity after Castration in the Rat Prostatic Gland

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Abstract

¼­·Ð
°Å¼¼µÈ ÈòÁã¿¡¼­ Àü¸³¼±ÀÌ ÅðÈ­µÇ°í ³²¼ºÈ£¸£¸ó Åõ¿©·Î ÀÛ¾ÆÁ³´ø Àü¸³¼±ÀÌ ´Ù½Ã ȸº¹µÈ´Ù
´Â »ç½ÇÀÌ Mooreµî¿¡ ÀÇÇØ ¹àÇôÁø ÀÌÈÄ Àü¸³¼±ÀÇ ¼ºÀå ¹× º¯È­¿¡ ´ëÇÑ ÀÌÇظ¦ À§ÇØ ´Ù¾çÇÑ
½ÇÇèÀÌ ½ÃµµµÇ°í ÀÖ´Ù. ƯÈ÷, ¹Ì¼¼¹Ú¸®¼ú(microdissection)ÀÇ µµÀÔÀ¸·Î ÈòÁã Àü¸³¼±¿¡ ´ëÇÑ
ºñ±³Àû »ó¼¼ÇÑ ÇغÎÇÐÀû ±¸Á¶°¡ ¹àÇôÁü¿¡ µû¶ó ÈòÁã Àü¸³¼±À» ÀÌ¿ëÇÑ µ¿¹° ¸ðµ¨Àº Àü¸³¼±
¼¼Æ÷ÀÇ Áõ½ÄÁúȯÀÎ Àü¸³¼±ºñ´ëÁõ°ú Àü¸³¼±¾ÏÀÇ º´Å»ý¸®ÀÇ ÀÌÇظ¦ À§ÇÑ ÁÁÀº ½ÇÇèÀÚ·á·Î Á¦
½ÃµÇ°í ÀÖ´Ù. Àü¸³¼±ÀÇ °¢¿±(lobe)°£ ÇǸ®°í µ¿ÀÏÇÑ ¿± ³»¿¡¼­ ³²¼ºÈ£¸£¸ó Á¦°Å¿¡ µû¸¥ ¹ÝÀÀ
µµÀÇ Â÷ÀÌ, Àü¸³¼± ¼¼Æ÷ Áõ½Ä¿¡ ÀÇÇÑ Àü¸³¼± ÁúȯÀÇ Ä¡·á¿¡ »ç¿ëµÇ´Â ¿©·¯ ¾àÁ¦¿¡ ´ëÇÑ ¹Ý
ÀÀ ±×¸®°í Àü¸³¼± ÅðÈ­¿Í °ü·ÃÇÑ ¼¼Æ÷ÀÚ¿¬»ç °úÁ¤¿¡ ´ëÇÑ ÀÌÇØ µîÀ» À§ÇØ ÇöÀç ÈòÁã Àü¸³¼±
¿¡ ´ëÇÑ ¸¹Àº ¿¬±¸°¡ ÁøÇà ÁßÀÌ´Ù. º» ¿¬±¸´Â °íȯÀûÃâ¼úÀ» ÅëÇØ ³²¼ºÈ£¸£¸óÀ» Â÷´ÜÇÑ ÈòÁã
ÀÇ Àü¸³¼±À» ¹Ì¼¼¹Ú¸®¼úÀ» ÀÌ¿ëÇÏ¿© º¹¿±(ventral lobe)°ú ÀÀ°í¼±(coagulating gland)À» ºÐ¸®
ÇÏ°í, °¢ ¿±ÀÇ ±ÙÀ§ºÎ¿Í ¿øÀ§ºÎ¸¦ ¹Ì¼¼ Àý´ÜÇÏ¿© ³²¼ºÈ£¸£¸ó °áÇÌ ÈÄ ½Ã°£ °æ°ú¿¡ µû¸¥ Èò
Áã Àü¸³¼±ÀÇ Á¤·®Àû ±×¸®°í ÇüÅ Á¶Á÷ÇÐÀû º¯È­ ¾ç»óÀ» ¹àÇô È£¸£¸ó°ú °ü·ÃµÈ Àü¸³¼± Áúȯ
ÀÇ Ä¡·á ¹ÝÀÀÀ» ¿¹ÃøÇÒ ¼ö ÀÖ´Â ¸ðµ¨·Î »ï°íÀÚ ÇÏ¿´´Ù.

Purpose : Prostate is a well known androgen dependent accessary sex organ and
androgen plays major roles in growth and development of prostate. While rat prostate
has been the focus of many studies on androgen action and prostatic carcinogenesis,
little is known of the pattern of regional variation and lobe-specific morphologic
difference. Therefore, the study was designed to determine the morphologic differences
in the proximal and distal duct, and in the ventral lobe and coagulating gland after
castration through use of a microdissection method.
Materials and Methods : Male Sprague-Dawley rats were used in all studies. The
morphologic changes evaluated at 4, 7, 14 days after castration.
Results : Wet weights of the ventral prostatic lobes in 7-, 14-day-post castration
group were significantly different from control group(p=0.0001, ANOVA test),
respectively. After castration the distal ducts may seem to be melted down into the
proximal ducts and tall simple columnar epithelial cells of distal duct changed into
cuboidal cells. The distal duct of the castration groups showed decrease in ductal
diameter, the numbers of cell and reduction of epithelial cell height. But these changes
were not predominant in the proximal ducts of both lobes. There was no morphological
difference between the ventral lobe and the coagulating gland after the orchiectomy.
Conclusions : This study demonstrated that the androgen was a very important
hormone to maintain the prostate gland. There was a morphological heterogeneity
between the proximal and the distal ducts. We suggested that the regional variation in
androgen responsiveness may provide an appropriate model for the study of androgen
independent prostatic cell survival.

Å°¿öµå

Prostate; Androgen; Castration; Microdissection;

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