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GlucocorticoidÀÇ Àå±â°£ Åõ¿© ¹× ¿îµ¿ ¾ïÁ¦¿¡ ÀÇÇÑ °ñ¼Õ½Ç½Ã calcitoninÀÇ ¿¹¹æÈ¿°ú¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸

EXPERIMENTAL STUDY ON THE EFFECT OF CALCITONIN IN THE OSTEOPOROSIS INDUCED BY THE IMMOBILIZATION AND LONG-TERM GLUCOCORTICOID

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Abstract

glucocorticoidÀÇ Àå±âÅõ¿©·Î À¯¹ßµÇ´Â °ñ¼Õ½ÇÀÌ calcitonin¿¡ ÀÇÇÏ¿© ¿¹¹æµÉ ¼ö ÀÖ´ÂÁö¸¦
Æò°¡ÇÏ°í calcitoninÀÌ ÆÄ°ñ¼¼Æ÷ ÀÌ¿Ü¿¡ Á¶°ñ¼¼Æ÷¿¡µµ Àڱرâ´ÉÀ» °¡Áö´ÂÁö¸¦ ±¸¸íÇϱâ À§ÇÏ
¿© º» ¿¬±¸¸¦ ½ÃµµÇÏ¿´´Ù ÀúÀÚ´Â ¹é¼­¿¡¼­ ¿îµ¿Àå¾Ö¸¦ ÀÏÀ¸Å² ÈÄ °ñ¼Õ½ÇÀÇ Á¤µµ¸¦ Æò°¡Çϱâ
À§ÇÏ¿©¼­´Â dexamethasone 0.5§·/§¸À» ÁÖ 2ȸ¾¿, ±×¸®°í dexamethasoneÀ¸·Î ÀÎÇÑ °ñ¼Õ½ÇÀÇ
ȸº¹»óÀ» °üÂûÇϱâ À§ÇÏ¿©¼­´Â dexamethasone 0.5§·/§¸°ú elcalcitonin 1¥ìunit/§¸À» ÁÖ 2ȸ
¾¿ ±ÙÀ°ÁÖ»çÇÏ¿´´Ù. ÀÌµé ½ÇÇ豺¿¡¼­ ¿äÃß¿Í ´ëÅð°ñÀÇ ÁÖ»çÀü°ú ÁÖ»çÈÄÀÇ °ñ¹Ðµµ´Â
aluminum step wedge¸¦ ºÎÂøÇÑ X¼± »çÁø»óÀ» photodensitometer·Î ÃøÁ¤ÇÏ¿´°í Á¶°ñ´ÉÀº
Tc-99m MDP °ñ¼·ÃëÀ²°ú Ç÷Àå osteocalcinÄ¡·Î Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ´ëÅð°ñ¿¡¼­ÀÇ °ñ¹Ðµµ´Â Çظé°ñÀÌ ¸¹Àº µÎºÎ°¡ ÇÇÁú°ñÀÌ ¸¹Àº °ñ°£¿¡ ºñÇÏ¿© ÇöÀúÈ÷ °¨
¼ÒµÇ¾ú´Ù.
2. glucocorticoidÅõ¿©±º¿¡¼­´Â ¿äÃß¿Í ´ëÅð°ñ¿¡¼­ °ñ¹Ðµµ°¡ °øÈ÷ °¨¼ÒµÇ¾úÀ¸¸ç,
glucocorticoid¿Í calcitoninÀÇ Åõ¿©±º¿¡¼­´Â glucocorticoidÅõ¿©±º¿¡ ºñÇÏ¿© °ñ¹Ðµµ°¡ Áõ°¡µÇ
¾ú´Ù.
3. Tc-99m MDPÀÇ °ñ¼·ÃëÀ²Àº glucocorticoidÅõ¿©±º¿¡¼­´Â À¯ÀÇÇÏ°Ô °¨¼ÒµÇ¾úÀ¸³ª,
glucocorticoid¿Í calcitoninÅõ¿©±º¿¡¼­´Â ½ÇÇè 12ÁÖºÎÅÍ ÀÌÀÇ °ñ¼·ÃëÀ²ÀÌ Áõ°¡µÇ¾ú´Ù.
4. Ç÷Àå osteocalcinÄ¡´Â glucocorticoidÅõ¿©±º¿¡¼­´Â ½Ã°£ÀÌ °æ°úµÊ¿¡ µû¶ó ¼­¼­È÷ °¨¼ÒµÇ
¾ú°í, glucocorticoid¿Í calcitoninÅõ¿©±º¿¡¼­´Â ½ÇÇè 12ÁÖºÎÅÍ Ç÷Àå osteocalcinÄ¡°¡ Áõ°¡µÇ¾ú´Ù.
#ÃÊ·Ï#
It is well known that the glucocorticoid induces osteoporosis by suppression of the
osteoblast, but its effect on the osteoclast has some controversy whether it activates or
suppresses the osteoclast.
If the calcitonin, which is known to suppress the osteoclast, prevents the osteoporosis
by glucocorticoid, then the suppression of the osteoclast by the glucocorticoid is not so
significant. And if the calcitonin increases the osteoblastic activity, Tc-99m MDP uptake
will be increased in spite of the glucocorticoid effect on the osteoblast.
The immobilization operation was performed to the right leg of male Wistar rats
weighing about 200gm each. For 16 weeks after operation, rats were injected
glucocorticoid alone or glucocorticoid and calcitonin.
The bone density was measured by means of photodensitometry under reference
aluminum step wedge and Tc-99m MDP uptake was available to the index of the
osteoblastic activity.
1. The bone density of femoral head was markedly reduced than that of femoral shaft
following ratio of cancellous and cortical components in both site.
2. Glucocorticoid caused decrease in bone density of spine and femur, and there is
significantly increase of it when medication of glucocorticoid and calcitonin injection
simultaneously than that of glucocortiroid.
3. Tc-99m MDP uptake was revealed significant reduction in medication of
glucocorticoid but increase in glucocorticoid and calcitonin injection simultaneously in
later experimental period.
4. There was a slight reduction in plasma osteocalcin in medication of glucocorticoid
through experimental periods and an increase in its value in case of giving
glucocorticoid and calcitonin simultaneously in later experimental period.
From these results, we suggest that osteoporosis by immobilization is more
pronounced by glucocorticoid hormone and osteoporosis induced by immobilization and
glucocorticoid use is prevented by calcitonin administration with increasing osteoblastic
activity.

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