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ÈòÁã¿¡¼­ Á¤°üÀýÁ¦ ÈÄ ÀüÀåÀÚ±Ø ¹× ¥á-Adrenergic Agonist°¡ Á¤°ü ¼öÃà·Â¿¡ ¹ÌÄ¡´Â ¿µÇâ The Effect of Electrical Field Stimulation and ¥á-Adrenergic Agonist on the Contraction of Vas Deferens after Vasectomy in the Rat

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Abstract

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ÀúÀÚµéÀº ÈòÁ㸦 ÀÌ¿ëÇÏ¿© ´ëÁ¶±º (n=8)°ú Á¤°üÀýÁ¦±º (n=24)¿¡¼­ ¼ö¼úÈÄ 2, 5 ¹× 10 ÁÖ
¿¡ ÀüÀåÀÛ±Ø ¹× phenylephrine hydrochloride Àڱؿ¡ ÀÇÇÑ Àü¸³¼±ºÎ¿Í ºÎ°íȯºÎÀÇ Á¤°ü ¼öÃà
·Â ¹× ½Å°æÀÇ º´¸®Á¶Á÷ÇÐÀû ¼Ò°ßÀ» °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ´ëÁ¶±º¿¡¼­ Á¤°ü ¼öÃà·ÂÀº ÀüÀåÀÚ±Ø Å©±â¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ¿´À¸¸ç Àû¸³¼±ºÎÀÇ ¼öÃà·Â
ÀÌ ºÎ°íȯºÎº¸´Ù ³·¾Ò´Ù. ±×·¯³ª Á¤°üÀýÁ¦±º¿¡¼­´Â Àü¸³¼±ºÎÀÇ ¼öÃà·ÂÀÌ ºÎ°íȯºÎº¸´Ù Å©°Ô
³ªÅ¸³µ´Ù. Phenylephrine hydrochloride 10-5M Àڱؿ¡ ´ëÇÑ ºÎ°íȯºÎ ¼öÃà·Â
À» ´ëÁ¶±º¿¡¼­ Àü¸³¼±ºÎº¸´Ù Å©°Ô ³ªÅ¸³µÀ¸¸ç Á¤°üÀýÁ¦½Ã ´ëÁ¶±º¿¡ ºñÇØ Áõ°¡µÇ¾ú´Ù.
2. º´¸®Á¶Á÷ °Ë»ç»ó Á¤°üÃÊ¿¡ Á¸ÀçÇÏ´Â Àü¸³¼±ºÎ Á¤°üÀÇ ½Å°æÀº ´ëÁ¶±º°ú Á¤°üÀýÁ¦±º°£ÀÇ
Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª, ºÎ°íȯºÎ Á¤°ü¿¡¼­´Â Á¤°üÀýÁ¦±ºÀÇ ½Å°æÀÌ ±â°£°æ°ú¿¡ µû¶ó ´ëÁ¶
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ÀÌ»óÀ¸·Î Á¤°üÀç¹®ÇÕ¼ú½Ã Á¤°üÀýÁ¦ ÈÄ ±â°£ÀÌ ±æ¼ö·Ï Á¤°ü ¼öÃà·ÂÀÌ °¨¼ÒµÇ´Â °ÍÀº Á¤°ü
ÀýÁ¦ ÈÄ ±â°£°æ°ú¿¡ µû¸¥ Á¡Â÷ÀûÀÎ ½Å°æº¯¼ºÀÌ ÁÖµÈ ¿øÀÎÁßÀÇ Çϳª°¡ µÊÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç,
ÇâÈÄ Á¤°ü Àڱؽà ºÐºñµÇ´Â ³ë¸£¾Æµå·¹³¯¸° ¹× NPY, VIP, acetylcholine µîÀÇ Á¤·®ºÐ¼®°ú
Á¤°üÀýÁ¦ÈÄ ½Å°æº¯¼ºÀÌ ÀÌ·± ½Å°æÀü´Þ¹°ÁúÀÇ ºÐºñ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¿¬±¸ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÒ
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This study was designed to determine the effect of eletrical field stimulation (EFS)
and ¥á-adrenergic agonist on the contractiligy of vasectomized prostatic and epididymal
segments at post-vasectomized 2, 5 and 10 weeks, and to observe innervation changes
of the vas deferens after vasectomy. The contractile response was recorded on a
polygraph via force transducer and expressed as the g tension per 100 mg tissue. And
we reviewed histopathologic sections stained with S-100 protein by light microscopy.
The results were as follows:
1. In control groups, contractile responses of prostatic and epididymal segments to
EFS (4, 8, 16, 32 £¦ 64 Hz) were gradually increased by increasing frequencies. But
contractile responses of vasectomized epididymal segments to all frequencies of EFS
declined. Contractile responses of vasectomized prostatic segments were significantly
greater than that of vasectomized epididymal segments(p<0.05).
2. Contractile responses of epididymal segments to phenylephrine hydrochloride
10-5M were significantly greater than that of prostatic segments (p<0.05).
Contractile responses of prostatic segments were tend to decline. In epididymal
segments, contractile response of post-vasectomized 5 weeks group was significantly
greater than that of control and post-vasectomized 2 weeks groups (p<0.05)
3. In control and vasectomized prostatic segment, nerve bundles were strongly positive
and intact histopathologiclly for the S-100 protein immunohistochemical stain. In
epididymal segment, nerve bundles were intact in control group. However, vacuolar
degeneration tend to be gradually increased and stained weakly by increasing duration in
vasectomized epididymal segment.
These results suggest that the progression of degenerative change of adrenergic
innervation after vasectomy may play an important role in progressively decreasing
contractiligy of the vas deferens after vasectomy.

Vasectomy; Prostatic segment; Epididymal segment; Electrical field stimulation; ¥á-adrenergic agonist; Adrenergic innertion;

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